US20060112955A1 - Corona-discharge air mover and purifier for fireplace and hearth - Google Patents

Corona-discharge air mover and purifier for fireplace and hearth Download PDF

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Publication number
US20060112955A1
US20060112955A1 US11/288,620 US28862005A US2006112955A1 US 20060112955 A1 US20060112955 A1 US 20060112955A1 US 28862005 A US28862005 A US 28862005A US 2006112955 A1 US2006112955 A1 US 2006112955A1
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United States
Prior art keywords
passage
fireplace
combustion chamber
corona discharge
positively charged
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Abandoned
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US11/288,620
Inventor
Debra Reaves
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Ranco Inc of Delaware
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Ranco Inc of Delaware
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Priority to US11/288,620 priority Critical patent/US20060112955A1/en
Priority to PCT/US2005/043629 priority patent/WO2006060659A2/en
Publication of US20060112955A1 publication Critical patent/US20060112955A1/en
Abandoned legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00Stoves or ranges
    • F24B1/18Stoves with open fires, e.g. fireplaces
    • F24B1/185Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/187Condition responsive controls for regulating combustion 
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/017Combinations of electrostatic separation with other processes, not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/019Post-treatment of gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02Plant or installations having external electricity supply
    • B03C3/025Combinations of electrostatic separators, e.g. in parallel or in series, stacked separators, dry-wet separator combinations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34Constructional details or accessories or operation thereof
    • B03C3/38Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34Constructional details or accessories or operation thereof
    • B03C3/40Electrode constructions
    • B03C3/41Ionising-electrodes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00Stoves or ranges
    • F24B1/18Stoves with open fires, e.g. fireplaces
    • F24B1/1808Simulated fireplaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24BDOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00Stoves or ranges
    • F24B1/18Stoves with open fires, e.g. fireplaces
    • F24B1/185Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/188Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas  
    • F24B1/1885Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas   the heat exchange medium being air only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00Details of magnetic or electrostatic separation
    • B03C2201/14Details of magnetic or electrostatic separation the gas being moved electro-kinetically
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00Details or features not otherwise provided for
    • F24F2221/18Details or features not otherwise provided for combined with domestic apparatus
    • F24F2221/186Details or features not otherwise provided for combined with domestic apparatus combined with a fireplace

Definitions

  • This invention pertains to fireplace and hearth heating systems, and more particularly to blowers for use in fireplace and hearth heating systems.
  • fireplaces typically employ conventional rotating air movers such as fans and blowers to draw return air into a duct or plenum, force it through a heat exchanger, and then expel heated air back out into the room.
  • An air filter may be added to further condition the air.
  • fans and blowers tend to be noisy, especially in the relative quiet of a living room or bedroom. Furthermore, fans and blowers contain rotating and moving parts that usually wear out over time. Conventional air filters need to be replaced periodically, which increases the cost of ownership of such a system.
  • the present invention provides a new and improved air mover and purifier for a fireplace and hearth that overcomes one or more problems existing in the art. More particularly, the present invention provides a new and improved air mover and purifier for residential fireplace and hearth heating systems having a forced air duct or plenum.
  • the invention replaces a fan or blower with a corona-discharge air-moving apparatus that contains no moving parts.
  • the invention is quieter, more efficient and more reliable than fans or blowers and provides air purification without the use of external filters or devices.
  • the invention provides a fireplace.
  • the fireplace comprises a combustion chamber, a passage, and at least one corona discharge apparatus.
  • the passage is adjacent to the combustion chamber and extends between an inlet and an outlet.
  • the at least one corona discharge apparatus is positioned within the passage to draw a fluid into the passage through the inlet and to expel the fluid through the outlet.
  • the invention provides a corona-discharge air mover and purifier apparatus for a fireplace having a combustion chamber configured to receive a fuel.
  • the fuel generates heat within the combustion chamber when combusted.
  • a passage adjacent to the combustion chamber extends between an inlet and an outlet.
  • the corona-discharge air mover and purifier apparatus comprises a first positively charged emitter array adapted to be positioned in the passage and a first negatively charged collector array adapted to be positioned in the passage in spaced relation to the first positively charged emitter array.
  • the first positively charged emitter array and the first negative charged collector array are operative to cooperatively produce an electric wind in the passage.
  • the invention provides method of heating an environment using a fireplace having a combustion chamber configured to receive a fuel.
  • the fuel generates heat within the combustion chamber when combusted.
  • a passage is adjacent to the combustion chamber and extends between an inlet and an outlet.
  • the method comprises the step of installing a corona discharge apparatus in the passage.
  • the installed corona discharge apparatus is then energized to produce an electric wind in the passage.
  • the electric wind results in air being drawn from the environment into the passage through the inlet, heated from the combustion chamber, and expelled through the outlet into the environment to warm the environment during combustion of the fuel in the combustion chamber.
  • FIG. 1 is a simplified side view of an exemplary embodiment of a fireplace including an air moving apparatus constructed in accordance with the teachings of the present invention.
  • a hearth or fireplace 10 constructed in accordance with the teachings of the present invention, which may be installed, e.g., in a residential dwelling or commercial building, is illustrated.
  • the fireplace 10 of the present invention is constructed to quietly move a fluid (e.g., air) through the fireplace without the need for moving or rotating parts.
  • the fireplace 10 may sit on a base 12 and comprises a body 14 and a flue 16 .
  • the base 12 is preferably constructed of a heat and fire resistant material such as stone, brick, concrete, and the like. Such a base 12 for the fireplace 10 typically rests on and above the foundation of the structure and generally supports the body 14 .
  • the flue 16 which sits atop the body 14 , is configured to transport hot gases to the chimney (not shown) and out of the structure.
  • the body 14 includes a combustion chamber 18 , a passage 20 , and one or more corona discharge apparatuses 22 .
  • the body 14 of the fireplace 10 defines a front face 24 that conventionally faces toward an environment such as a living room, bedroom, and the like. Since the fireplace 10 can be installed in a flush or recessed orientation, the front face 24 of the body 14 can be planar or offset from a wall 26 .
  • the combustion chamber 18 has an open front 28 that is generally exposed to the environment. This open front 28 may be closed off by glass doors or the like in highly efficient embodiments. In such embodiments, the combustion chamber 18 is often fed with outside air to support the combustion. In addition, the combustion chamber 18 defines a back wall 30 , a floor 32 , and a roof 34 .
  • the combustion chamber 18 is sized, dimensioned, and otherwise configured to receive a fuel 36 such as, for example, wood, natural gas, pellets, and the like. When the fuel 36 is combusted, heat is generated within the combustion chamber 18 .
  • the roof 34 of the combustion chamber 18 includes an aperture 38 that couples the combustion chamber 18 and the flue 16 . Therefore, when a damper 40 in the flue 16 is opened, the smoke and other combustion byproducts produced by the combusted fuel 36 is able to rise and pass upwardly through the flue 16 .
  • one or more of the roof 34 and flue 16 can include a portion that is upwardly canted or contoured.
  • the passage 20 in the body 14 extends between an inlet 42 and an outlet 44 .
  • the inlet 42 and outlet 44 each open through the front face 24 of the body 14 as shown in FIG. 1 .
  • the outlet 44 is disposed vertically above the inlet 42 . This allows the passage 20 to take in cooler air near the floor of the dwelling to increase the occupants' comfort.
  • Each of the inlet and outlet 42 , 44 can be protected by a cover 46 , a grate, and the like.
  • FIG. 1 depicts, in one embodiment all or at least a portion of the passage 20 is proximate and/or adjacent to the combustion chamber 18 to increase the ability of the heat in the combustion chamber 18 to heat the air in the passage 20 .
  • the passage 20 runs along a substantial portion of the combustion chamber 18 .
  • the passage 20 begins at the inlet 42 , passes beneath the floor 34 , skirts the back wall 30 , runs along the roof 32 , and then terminates at the outlet 44 .
  • the heat generated by the combusted fuel 36 in the combustion chamber 18 can be conductively and/or convectively transferred to the air moving through or residing in the passage 20 .
  • Each of the corona discharge apparatuses 22 in the passage 20 is an electrical device that relies on corona discharge and ion charge attraction to move air and, preferably, filter particles and pollutants from the air.
  • three of the corona discharge apparatuses 22 are shown in the passage 20 although more or fewer may be used.
  • a typical corona discharge apparatus 22 employs numerous corona discharge electrodes 48 arranged in arrays and spaced apart from numerous negatively charged attracting electrodes 50 that are also arranged in arrays.
  • the corona discharge electrodes 48 can be referred to as an emitter array.
  • the attracting electrodes 50 can be referred to a collector array. Due to the many array configurations and electrode shapes that can be used, the arrays of the corona discharge electrodes 48 and the attracting electrodes 50 have been shown in FIG. 1 in a simplified form.
  • Each of the corona discharge electrodes 48 and attracting electrodes 50 is coupled to and charged by a high-voltage power supply 51 .
  • the electrodes 48 and 50 are also preferably controlled and/or managed by related control electronics (not shown).
  • the corona discharge electrodes 48 are typically asymmetrical with respect to the attracting electrodes 50 .
  • the corona discharge electrodes 48 are highly curved and resemble the tip of a needle or a narrow wire while the attracting electrodes 50 take the form of a flat plate or a ground plane. The curvature of the corona discharge electrodes 48 ensures a high potential gradient around that electrode.
  • the high potential gradient generated at or near the corona discharge electrodes 48 basically pulls apart the neutral air molecules in the immediate area. What remains after each neutral air molecule has been dismantled is a positively charged ion and a negatively charged electron. Due to the strong electric field near the corona discharge electrode 48 , the ion and electron are increasingly separated from each other, prevented from recombining, and accelerated. Therefore, the ion and electron are both imparted with kinetic energy. Moreover, since a portion of the air molecules in the passage 20 is ionized, the air in the passage becomes a conducting medium, the circuit including the corona discharge electrodes 48 and the attracting electrodes 50 is completed, and a current flow can be sustained.
  • the negatively charged electrons are persuaded to move toward the positively charged corona discharge electrodes 48 due to the difference in charge between them.
  • the rapidly moving and accelerating electrons collide with other neutral air molecules in the area, further positive ion/electron pairs are created.
  • an electron avalanche is established.
  • the electron avalanche sustains and/or perpetuates the corona discharge process.
  • the positively charged ions are persuaded to move from near the corona discharge electrodes 48 toward the attracting electrodes 50 .
  • This movement is due to the difference in charge between the positively charged ions and the negatively charged attracting electrodes.
  • the positively charged ions move they also collide with neutral air molecules.
  • the positively charged ions can transfer some of their momentum as well as excess charge to the neutral air molecules. Therefore, the neutral air molecules are knocked toward the attracting electrode 50 or are ionized and then drawn to the attracting electrode 50 . In either case, the positively charged ions and other air molecules end up flowing from the corona discharge electrodes 48 toward the attracting electrodes 50 .
  • the movement or flow of the air particles away from the corona discharge electrodes 48 and toward the attracting electrodes 50 causes or results in what is referred to by those skilled in the art as an electric wind or electrostatic fluid acceleration.
  • the electric wind travels through the passage 20 in a direction depicted by arrows 52 .
  • the velocity and volume of the air moving through the passage 20 is proportional to the voltage difference between the electrodes 48 , 50 and the size of the arrays.
  • the velocity and volume of the electric wind can be increased and decreased over a continuous range as desired. In any particular configuration, this range may be manually adjusted with a simple adjustment knob 49 or remote control that varies the electric potential between the electrodes 48 , 50 . With the appropriate configuration, air flows exceeding six hundred cubic feet per minute are possible.
  • one or more corona discharge apparatuses 22 can be disposed within either or both of the passage 20 and the flue 16 for the purpose of cleaning and scrubbing the air. Such beneficial and desirable filtering can be performed in addition to generating the electric wind. As known to those skilled in the art, contaminants and particles tend to adhere to the attracting electrode 50 during the corona discharge process. Therefore, both the air passing through the passage 20 and the exhaust gases exiting the combustion chamber 18 and being expelled from the structure can be purified.
  • the attracting electrodes 50 which are often plates, are preferably removable to permit inspection, cleaning, and replacement.
  • the entire corona discharge apparatuses 22 are removable.
  • the corona discharge apparatuses 22 may also control flue airflow in an oscillatory manner to achieve unique combustion effects.
  • a preferred embodiment of the present invention utilizes the technology described in one or more of the preceding patents and/or published applications, and most preferably, the technology described in U.S. Pat. Nos. 6,504,308, 6,664,741, and 6,727,657 issued to Kronos Advanced Technologies, Inc., of Belmont, Mass. The teachings and disclosure of each of these patents are also incorporated in their entireties by reference thereto.
  • the fireplace 10 further comprises an ozone depletion apparatus 53 for reducing the amount of ozone in the fluid.
  • the ozone depletion apparatus 53 is any system, device, or method having the ability to degenerate ozone into oxygen (i.e., dioxide) and/or absorb ozone.
  • the ozone depletion apparatus 53 can be a filter, a catalyst composition situated proximate the fluid, and the like.
  • the ozone depletion apparatus 53 can be situated in a variety of different locations relative to the one or more corona discharge apparatuses 22 , the ozone depletion apparatus is preferably disposed within the passage 20 proximate the outlet 44 . In an exemplary embodiment, the ozone depletion apparatus 53 is generally downstream of the last corona discharge apparatus 22 in the fireplace 10 . As such, air flowing out of the outlet 44 is purified by the ozone depletion apparatus 53 prior to entering the environment.
  • air is drawn into the passage 20 of the fireplace 10 through the inlet 42 due to the activation of one or more of the corona discharge apparatuses 22 and the corona discharge process as discussed above.
  • the air or particles thereof continues to move through the passage 20 in the direction indicated by the arrows 52 .
  • the heat from the fuel 36 being combusted in the combustion chamber 18 is conductively and/or convectively transferred to the air.
  • the air flowing through the passage 20 After the air flowing through the passage 20 has been heated, the air is expelled and/or exhausted into the environment through the outlet 44 by the corona discharge process. Since the air has been heated by the combustion of the fuel 36 in the combustion chamber 18 , an ambient temperature of the environment is elevated. In other words, the environment is warmed by the air that has circulated through the fireplace 10 and been heated.
  • At least one of the corona discharge apparatuses 22 illustrated in FIG. 1 also filters and cleans the air traveling through the passage 20 of the fireplace 10 .
  • at least one of the corona discharge apparatuses 22 filters and scrubs the exhaust gases leaving the combustion chamber 18 .
  • the present invention provides quieter hearth or fireplace 10 operation compared to when a mechanical fan or a blower is employed.
  • the present invention also allows for a smaller, more flexible footprint than a large, circular shaped fan or blower will allow. This enables a larger combustion chamber 18 in the same overall volume for the hearth or fireplace 10 .
  • the air can be purified by the corona discharge apparatuses 22 and the velocity of the air can be variably controlled.

Abstract

A fireplace for warming an environment is provided. The fireplace comprise a combustion chamber, a passage, and at least one corona discharge apparatus. The passage is adjacent to the combustion chamber and extends between an inlet and an outlet. The at least one corona discharge apparatus is position within the passage to draw a fluid into the passage through the inlet and to expel the fluid through the outlet.

Description

    CROSS-REFERENCE TO RELATED PATENT APPLICATIONS
  • This patent application claims the benefit of U.S. Provisional Patent Application No. 60/632,226, filed Nov. 30, 2004, the teachings and disclosure of which are hereby incorporated in their entireties by reference thereto.
  • FIELD OF THE INVENTION
  • This invention pertains to fireplace and hearth heating systems, and more particularly to blowers for use in fireplace and hearth heating systems.
  • BACKGROUND OF THE INVENTION
  • Fireplaces typically employ conventional rotating air movers such as fans and blowers to draw return air into a duct or plenum, force it through a heat exchanger, and then expel heated air back out into the room. An air filter may be added to further condition the air.
  • Unfortunately, fans and blowers tend to be noisy, especially in the relative quiet of a living room or bedroom. Furthermore, fans and blowers contain rotating and moving parts that usually wear out over time. Conventional air filters need to be replaced periodically, which increases the cost of ownership of such a system.
  • Therefore, an apparatus that can quietly move, and perhaps even filter, the air that is heated by a fireplace without rotating parts would be desirable. The invention provides such an apparatus. These and other advantages of the invention, as well as additional inventive features, will be apparent from the description of the invention provided herein.
  • BRIEF SUMMARY OF THE INVENTION
  • In view of the above, the present invention provides a new and improved air mover and purifier for a fireplace and hearth that overcomes one or more problems existing in the art. More particularly, the present invention provides a new and improved air mover and purifier for residential fireplace and hearth heating systems having a forced air duct or plenum.
  • In one embodiment of the present invention, the invention replaces a fan or blower with a corona-discharge air-moving apparatus that contains no moving parts. The invention is quieter, more efficient and more reliable than fans or blowers and provides air purification without the use of external filters or devices.
  • In one aspect, the invention provides a fireplace. The fireplace comprises a combustion chamber, a passage, and at least one corona discharge apparatus. The passage is adjacent to the combustion chamber and extends between an inlet and an outlet. The at least one corona discharge apparatus is positioned within the passage to draw a fluid into the passage through the inlet and to expel the fluid through the outlet.
  • In another aspect, the invention provides a corona-discharge air mover and purifier apparatus for a fireplace having a combustion chamber configured to receive a fuel. The fuel generates heat within the combustion chamber when combusted. A passage adjacent to the combustion chamber extends between an inlet and an outlet. The corona-discharge air mover and purifier apparatus comprises a first positively charged emitter array adapted to be positioned in the passage and a first negatively charged collector array adapted to be positioned in the passage in spaced relation to the first positively charged emitter array. The first positively charged emitter array and the first negative charged collector array are operative to cooperatively produce an electric wind in the passage. As such, air is drawn from the environment into the passage through the inlet, heated from the combustion chamber, and expelled through the outlet into the environment to warm the environment during combustion of the fuel in the combustion chamber.
  • In yet another aspect, the invention provides method of heating an environment using a fireplace having a combustion chamber configured to receive a fuel. The fuel generates heat within the combustion chamber when combusted. A passage is adjacent to the combustion chamber and extends between an inlet and an outlet. The method comprises the step of installing a corona discharge apparatus in the passage. The installed corona discharge apparatus is then energized to produce an electric wind in the passage. The electric wind results in air being drawn from the environment into the passage through the inlet, heated from the combustion chamber, and expelled through the outlet into the environment to warm the environment during combustion of the fuel in the combustion chamber.
  • Other aspects, objectives and advantages of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The accompanying drawings incorporated in and forming a part of the specification illustrate several aspects of the present invention and, together with the description, serve to explain the principles of the invention. In the drawings:
  • FIG. 1 is a simplified side view of an exemplary embodiment of a fireplace including an air moving apparatus constructed in accordance with the teachings of the present invention.
  • While the invention will be described in connection with certain preferred embodiments, there is no intent to limit it to those embodiments. On the contrary, the intent is to cover all alternatives, modifications and equivalents as included within the spirit and scope of the invention as defined by the appended claims.
  • DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIG. 1, a hearth or fireplace 10 constructed in accordance with the teachings of the present invention, which may be installed, e.g., in a residential dwelling or commercial building, is illustrated. As will be described more fully below, the fireplace 10 of the present invention is constructed to quietly move a fluid (e.g., air) through the fireplace without the need for moving or rotating parts.
  • As shown, the fireplace 10 may sit on a base 12 and comprises a body 14 and a flue 16. The base 12 is preferably constructed of a heat and fire resistant material such as stone, brick, concrete, and the like. Such a base 12 for the fireplace 10 typically rests on and above the foundation of the structure and generally supports the body 14. The flue 16, which sits atop the body 14, is configured to transport hot gases to the chimney (not shown) and out of the structure.
  • The body 14 includes a combustion chamber 18, a passage 20, and one or more corona discharge apparatuses 22. The body 14 of the fireplace 10 defines a front face 24 that conventionally faces toward an environment such as a living room, bedroom, and the like. Since the fireplace 10 can be installed in a flush or recessed orientation, the front face 24 of the body 14 can be planar or offset from a wall 26.
  • The combustion chamber 18 has an open front 28 that is generally exposed to the environment. This open front 28 may be closed off by glass doors or the like in highly efficient embodiments. In such embodiments, the combustion chamber 18 is often fed with outside air to support the combustion. In addition, the combustion chamber 18 defines a back wall 30, a floor 32, and a roof 34. The combustion chamber 18 is sized, dimensioned, and otherwise configured to receive a fuel 36 such as, for example, wood, natural gas, pellets, and the like. When the fuel 36 is combusted, heat is generated within the combustion chamber 18.
  • The roof 34 of the combustion chamber 18 includes an aperture 38 that couples the combustion chamber 18 and the flue 16. Therefore, when a damper 40 in the flue 16 is opened, the smoke and other combustion byproducts produced by the combusted fuel 36 is able to rise and pass upwardly through the flue 16. To promote the ascension of the smoke and other combustion byproducts, one or more of the roof 34 and flue 16 can include a portion that is upwardly canted or contoured.
  • The passage 20 in the body 14 extends between an inlet 42 and an outlet 44. The inlet 42 and outlet 44 each open through the front face 24 of the body 14 as shown in FIG. 1. In the illustrated embodiment, the outlet 44 is disposed vertically above the inlet 42. This allows the passage 20 to take in cooler air near the floor of the dwelling to increase the occupants' comfort. Each of the inlet and outlet 42, 44 can be protected by a cover 46, a grate, and the like. As FIG. 1 depicts, in one embodiment all or at least a portion of the passage 20 is proximate and/or adjacent to the combustion chamber 18 to increase the ability of the heat in the combustion chamber 18 to heat the air in the passage 20. Preferably, the passage 20 runs along a substantial portion of the combustion chamber 18.
  • In the illustrated embodiment of FIG. 1, the passage 20 begins at the inlet 42, passes beneath the floor 34, skirts the back wall 30, runs along the roof 32, and then terminates at the outlet 44. As such, the heat generated by the combusted fuel 36 in the combustion chamber 18 can be conductively and/or convectively transferred to the air moving through or residing in the passage 20.
  • Each of the corona discharge apparatuses 22 in the passage 20 is an electrical device that relies on corona discharge and ion charge attraction to move air and, preferably, filter particles and pollutants from the air. In the illustrated embodiment, three of the corona discharge apparatuses 22 are shown in the passage 20 although more or fewer may be used.
  • A typical corona discharge apparatus 22 employs numerous corona discharge electrodes 48 arranged in arrays and spaced apart from numerous negatively charged attracting electrodes 50 that are also arranged in arrays. When assembled into an array, the corona discharge electrodes 48 can be referred to as an emitter array. Likewise, the attracting electrodes 50 can be referred to a collector array. Due to the many array configurations and electrode shapes that can be used, the arrays of the corona discharge electrodes 48 and the attracting electrodes 50 have been shown in FIG. 1 in a simplified form.
  • Each of the corona discharge electrodes 48 and attracting electrodes 50 is coupled to and charged by a high-voltage power supply 51. The electrodes 48 and 50 are also preferably controlled and/or managed by related control electronics (not shown). In addition, the corona discharge electrodes 48 are typically asymmetrical with respect to the attracting electrodes 50. In one embodiment, the corona discharge electrodes 48 are highly curved and resemble the tip of a needle or a narrow wire while the attracting electrodes 50 take the form of a flat plate or a ground plane. The curvature of the corona discharge electrodes 48 ensures a high potential gradient around that electrode.
  • The high potential gradient generated at or near the corona discharge electrodes 48 basically pulls apart the neutral air molecules in the immediate area. What remains after each neutral air molecule has been dismantled is a positively charged ion and a negatively charged electron. Due to the strong electric field near the corona discharge electrode 48, the ion and electron are increasingly separated from each other, prevented from recombining, and accelerated. Therefore, the ion and electron are both imparted with kinetic energy. Moreover, since a portion of the air molecules in the passage 20 is ionized, the air in the passage becomes a conducting medium, the circuit including the corona discharge electrodes 48 and the attracting electrodes 50 is completed, and a current flow can be sustained.
  • The negatively charged electrons are persuaded to move toward the positively charged corona discharge electrodes 48 due to the difference in charge between them. When the rapidly moving and accelerating electrons collide with other neutral air molecules in the area, further positive ion/electron pairs are created. As more and more positive/ion electric pairs are produced, an electron avalanche is established. The electron avalanche sustains and/or perpetuates the corona discharge process.
  • In contrast to the negatively charged electrons, the positively charged ions are persuaded to move from near the corona discharge electrodes 48 toward the attracting electrodes 50. This movement is due to the difference in charge between the positively charged ions and the negatively charged attracting electrodes. Like the electrons, when the positively charged ions move they also collide with neutral air molecules. When they collide, the positively charged ions can transfer some of their momentum as well as excess charge to the neutral air molecules. Therefore, the neutral air molecules are knocked toward the attracting electrode 50 or are ionized and then drawn to the attracting electrode 50. In either case, the positively charged ions and other air molecules end up flowing from the corona discharge electrodes 48 toward the attracting electrodes 50.
  • The movement or flow of the air particles away from the corona discharge electrodes 48 and toward the attracting electrodes 50 causes or results in what is referred to by those skilled in the art as an electric wind or electrostatic fluid acceleration. In the illustrated embodiment of FIG. 1, the electric wind travels through the passage 20 in a direction depicted by arrows 52.
  • In one embodiment, the velocity and volume of the air moving through the passage 20 is proportional to the voltage difference between the electrodes 48, 50 and the size of the arrays. By varying the potential between the electrodes 48, 50, the size and dimensions of the passage, and the like, the velocity and volume of the electric wind can be increased and decreased over a continuous range as desired. In any particular configuration, this range may be manually adjusted with a simple adjustment knob 49 or remote control that varies the electric potential between the electrodes 48, 50. With the appropriate configuration, air flows exceeding six hundred cubic feet per minute are possible.
  • When the positively charged ions creating the electric wind reach the attracting electrodes 50, the positive charge is removed by permitting a recombination of the negatively charged electrons with the positively charged ions. Due to the recombination, neutral air molecules once again exists in the passage 20. Advantageously, these neutral air molecules retain their velocity and direction.
  • In a preferred embodiment, one or more corona discharge apparatuses 22 can be disposed within either or both of the passage 20 and the flue 16 for the purpose of cleaning and scrubbing the air. Such beneficial and desirable filtering can be performed in addition to generating the electric wind. As known to those skilled in the art, contaminants and particles tend to adhere to the attracting electrode 50 during the corona discharge process. Therefore, both the air passing through the passage 20 and the exhaust gases exiting the combustion chamber 18 and being expelled from the structure can be purified. Notably, the attracting electrodes 50, which are often plates, are preferably removable to permit inspection, cleaning, and replacement. In an alternative embodiment, the entire corona discharge apparatuses 22 are removable. Moreover, besides providing air movement and air cleaning, the corona discharge apparatuses 22 may also control flue airflow in an oscillatory manner to achieve unique combustion effects.
  • As is known in the art, several patents and published applications have recognized that corona discharge devices may be used to generate ions and accelerate and filter fluids such as air. Such patents and published applications that describe fluid and/or air moving devices and technology include the following U.S. Pat. Nos. 3,638,058, 3,699,387, 3,751,715, 4,210,847, 4,231,766, 4,380,720, 4,643,745, 4,789,801, 5,077,500, 5,667,564, 6,176,977, 6,504,308, 6,664,741, and 6,727,657 and U.S. Pub. Pat. Applns. 2004/40217720, 2004/0212329, 2004/0183454, 2004/0155612, 2004/0004797, 2004/0004440, 2003/0234618, and 2003/0090209. The teachings and disclosure of each of these patents and published applications are incorporated in their entireties by reference thereto.
  • While other ion discharge or corona fluid movement technologies may be employed in the system and method of the present invention, a preferred embodiment of the present invention utilizes the technology described in one or more of the preceding patents and/or published applications, and most preferably, the technology described in U.S. Pat. Nos. 6,504,308, 6,664,741, and 6,727,657 issued to Kronos Advanced Technologies, Inc., of Belmont, Mass. The teachings and disclosure of each of these patents are also incorporated in their entireties by reference thereto.
  • In a preferred embodiment, the fireplace 10 further comprises an ozone depletion apparatus 53 for reducing the amount of ozone in the fluid. In general, the ozone depletion apparatus 53 is any system, device, or method having the ability to degenerate ozone into oxygen (i.e., dioxide) and/or absorb ozone. In particular, the ozone depletion apparatus 53 can be a filter, a catalyst composition situated proximate the fluid, and the like. When the fireplace 10 is equipped with the ozone depletion apparatus 53, the ozone generated by the corona discharge apparatuses 22 can be maintained below a desired level, relegated to within a predetermined range, and otherwise managed.
  • While the ozone depletion apparatus 53 can be situated in a variety of different locations relative to the one or more corona discharge apparatuses 22, the ozone depletion apparatus is preferably disposed within the passage 20 proximate the outlet 44. In an exemplary embodiment, the ozone depletion apparatus 53 is generally downstream of the last corona discharge apparatus 22 in the fireplace 10. As such, air flowing out of the outlet 44 is purified by the ozone depletion apparatus 53 prior to entering the environment.
  • As is known in the art, several patents have recognized that ozone depletion devices and systems may be used to convert ozone to oxygen, absorb ozone, and the like. Such patents that describe converting and absorbing devices, methods, and technology include the following U.S. Pat. Nos. 4,343,776, 4,405,507, 5,422,331, 6,375,902, 6,375,905, and 6,699,529. The teachings and disclosure of each of these patents are incorporated in their entireties by reference thereto.
  • In operation, air is drawn into the passage 20 of the fireplace 10 through the inlet 42 due to the activation of one or more of the corona discharge apparatuses 22 and the corona discharge process as discussed above. Once drawn inside the passage 20, the air (or particles thereof) continues to move through the passage 20 in the direction indicated by the arrows 52. While residing within the passage 20, the heat from the fuel 36 being combusted in the combustion chamber 18 is conductively and/or convectively transferred to the air.
  • After the air flowing through the passage 20 has been heated, the air is expelled and/or exhausted into the environment through the outlet 44 by the corona discharge process. Since the air has been heated by the combustion of the fuel 36 in the combustion chamber 18, an ambient temperature of the environment is elevated. In other words, the environment is warmed by the air that has circulated through the fireplace 10 and been heated.
  • In a preferred embodiment, at least one of the corona discharge apparatuses 22 illustrated in FIG. 1 also filters and cleans the air traveling through the passage 20 of the fireplace 10. In a further preferred embodiment, at least one of the corona discharge apparatuses 22 filters and scrubs the exhaust gases leaving the combustion chamber 18.
  • Advantageously, the present invention provides quieter hearth or fireplace 10 operation compared to when a mechanical fan or a blower is employed. The present invention also allows for a smaller, more flexible footprint than a large, circular shaped fan or blower will allow. This enables a larger combustion chamber 18 in the same overall volume for the hearth or fireplace 10. Moreover, the air can be purified by the corona discharge apparatuses 22 and the velocity of the air can be variably controlled.
  • All references, including publications, patent applications, and patents cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.
  • The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) is to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms “comprising,” “having,” “including,” and “containing” are to be construed as open-ended terms (i.e., meaning “including, but not limited to,”) unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.
  • Preferred embodiments of this invention are described herein, including the best mode known to the inventors for carrying out the invention. Variations of those preferred embodiments may become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context.

Claims (20)

1. A fireplace comprising:
a combustion chamber;
a passage adjacent to the combustion chamber, the passage extending between an inlet and an outlet; and
at least one corona discharge apparatus positioned within the passage to draw a fluid into the passage through the inlet and to expel the fluid through the outlet.
2. The fireplace of claim 1, wherein the inlet is positioned below the combustion chamber so as to allow cooler fluid to be drawn into the passage, and wherein the outlet is positioned above the combustion chamber to allow to fluid in the passage to be heated when fuel is combusted in the combustion chamber.
3. The fireplace of claim 1, further comprising means operatively coupled to the at least one corona discharge apparatus for varying a flow rate of the fluid through the passage.
4. The fireplace of claim 1, wherein the inlet and the outlet are formed in a front face of the fireplace and the outlet is disposed vertically above the inlet.
5. The fireplace of claim 1, wherein the fireplace further comprises an ozone depletion apparatus for removing ozone from the fluid.
6. The fireplace of claim 1, wherein the passage is oriented relative to the combustion chamber to heat the fluid within the passage.
7. The fireplace of claim 1, further comprising a flue coupled to a roof of the combustion chamber, the flue including at least one corona discharge apparatus positioned therein for filtering smoke and other combustion byproducts during combustion within the combustion chamber.
8. The fireplace of claim 7, wherein at least one electrode in the at least one corona discharge apparatus is removable from the flue for inspection, cleaning, and replacement.
9. The fireplace of claim 7, wherein the at least one corona discharge apparatus positioned within the flue permits a variable flow of air to flow through the flue to control the combustion in the combustion chamber.
10. The fireplace of claim 1, wherein the at least one corona discharge apparatus comprises a positively charged emitter array in spaced relation to a negatively charged collector array.
11. The fireplace of claim 1, wherein the at least one corona discharge apparatus moves the fluid through the passage at about six hundred cubic feet per minute when energized.
12. The fireplace of claim 1, wherein at least one of the at least one corona discharge apparatuses is removably positioned in the passage to allow cleaning thereof.
13. The fireplace of claim 1, wherein the fireplace further includes a high voltage power supply operatively coupled to the at least one corona discharge apparatus.
14. A corona-discharge air mover and purifier apparatus for a fireplace having a combustion chamber configured to receive a fuel, the fuel generating heat within the combustion chamber when combusted, and a passage adjacent to the combustion chamber, the passage extending between an inlet and an outlet, comprising:
a first positively charged emitter array adapted to be positioned in the passage; and
a first negatively charged collector array adapted to be positioned in the passage in spaced relation to the first positively charged emitter array, the first positively charged emitter array and the first negative charged collector array being operative to cooperatively produce an electric wind in the passage such that air is drawn from the environment into the passage through the inlet, heated from the combustion chamber, and expelled through the outlet into the environment to warm the environment during combustion of the fuel in the combustion chamber.
15. The apparatus of claim 14, further comprising a second positively charged emitter array adapted to be positioned in the passage and a second negatively charged collector array adapted to be positioned in the passage in spaced relation to one another such that they cooperatively aid the electric wind in the passage.
16. The apparatus of claim 14, wherein the first positively charged emitter array and the first negative charged collector array operative to cooperatively filter the air drawn from the environment and flowing in the passage.
17. The apparatus of claim 14, further comprising a second positively charged emitter array adapted to be positioned in a flue of the fireplace and a second negatively charged collector array adapted to be positioned in the flue in spaced relation to the second positively charged emitter array, the second positively charged emitter array and the second negative charged collector array being operative to cooperatively produce an electric wind in the flue to aid combustion in the combustion chamber.
18. A method of heating an environment using a fireplace having a combustion chamber configured to receive a fuel, the fuel generating heat within the combustion chamber when combusted, and a passage adjacent to the combustion chamber, the passage extending between an inlet and an outlet, the method comprising the steps of:
installing a corona discharge apparatus in the passage;
energizing the corona discharge apparatus to produce an electric wind in the passage such that air is drawn from the environment into the passage through the inlet, heated from the combustion chamber, and expelled through the outlet into the environment to warm the environment during combustion of the fuel in the combustion chamber.
19. The method of claim 18, wherein the step of installing the corona discharge apparatus comprises the steps of:
installing a first positively charged emitter array in the passage;
installing a first negatively charged collector array in the passage in spaced relation to the first positively charged emitter array.
20. The method of claim 19, wherein the step of installing the corona discharge apparatus further comprises the steps of:
installing a second positively charged emitter array in the passage;
installing a second negatively charged collector array in the passage in spaced relation to the second positively charged emitter array.
US11/288,620 2004-11-30 2005-11-29 Corona-discharge air mover and purifier for fireplace and hearth Abandoned US20060112955A1 (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060112828A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Spot ventilators and method for spot ventilating bathrooms, kitchens and closets
US20060112829A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Fanless indoor air quality treatment
US20060114637A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Fanless building ventilator
US20060112708A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Corona-discharge air mover and purifier for packaged terminal and room air conditioners
US20060125648A1 (en) * 2004-11-30 2006-06-15 Ranco Incorporated Of Delaware Surface mount or low profile hazardous condition detector
WO2008051535A2 (en) * 2006-10-24 2008-05-02 Krichtafovitch Igor A Fireplace with electrostatically assisted heat transfer and method of assisting heat transfer in combustion powered heating devices
US20100210203A1 (en) * 2009-02-19 2010-08-19 Randy Amerson Room sensor using charged particle airflow
US20120012100A1 (en) * 2010-07-13 2012-01-19 Mark Klein Hood for emission control for fireplace
US11231177B2 (en) * 2016-01-20 2022-01-25 Fpi Fireplace Products International Ltd. Fireplace system, heat exchanger and method
US11635231B2 (en) 2019-09-03 2023-04-25 Sl-Technik Gmbh Rotating grate with a cleaning device for a biomass heating system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVR20030101A1 (en) * 2003-08-08 2005-02-09 Gruppo Piazzetta Spa WOOD STOVE OR FIREPLACE WITH FORCED AIR CIRCULATION SYSTEM.
ITUB20153956A1 (en) * 2015-09-15 2017-03-15 Marco Levorato BIOMASS STOVE WITH AIR PURIFICATION ENVIRONMENT AND INTEGRATED HEAT RECOVERY

Citations (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765975A (en) * 1952-11-29 1956-10-09 Rca Corp Ionic wind generating duct
US2795401A (en) * 1953-09-23 1957-06-11 Air Preheater Precipitator intermediate series air heaters
US3503348A (en) * 1968-08-30 1970-03-31 Hagan Ind Inc Incinerator
US3504482A (en) * 1965-01-22 1970-04-07 William H Goettl Electrostatic air cleaner and control means therefor
US3638058A (en) * 1970-06-08 1972-01-25 Robert S Fritzius Ion wind generator
US3699387A (en) * 1970-06-25 1972-10-17 Harrison F Edwards Ionic wind machine
US3751715A (en) * 1972-07-24 1973-08-07 H Edwards Ionic wind machine
US3973927A (en) * 1974-01-22 1976-08-10 Helmut Furchner Process and installation for creating optimum climatic conditions in a room by air purification and ionization control
US4076011A (en) * 1976-06-21 1978-02-28 Roger Proulx Warm air heating and fire-place system
US4210847A (en) * 1978-12-28 1980-07-01 The United States Of America As Represented By The Secretary Of The Navy Electric wind generator
US4231766A (en) * 1978-12-11 1980-11-04 United Air Specialists, Inc. Two stage electrostatic precipitator with electric field induced airflow
US4325353A (en) * 1980-05-02 1982-04-20 Husa Marlin V Heating apparatus
US4343776A (en) * 1980-12-22 1982-08-10 Engelhard Corporation Ozone abatement catalyst having improved durability and low temperature performance
US4380720A (en) * 1979-11-20 1983-04-19 Fleck Carl M Apparatus for producing a directed flow of a gaseous medium utilizing the electric wind principle
US4405507A (en) * 1980-12-22 1983-09-20 Engelhard Corporation Ozone abatement catalyst having improved durability and low temperature performance
US4470834A (en) * 1982-12-02 1984-09-11 Grabber Enterprises Air filter
US4643745A (en) * 1983-12-20 1987-02-17 Nippon Soken, Inc. Air cleaner using ionic wind
US4675029A (en) * 1984-11-21 1987-06-23 Geoenergy International, Corp. Apparatus and method for treating the emission products of a wood burning stove
US4694817A (en) * 1984-03-30 1987-09-22 Sture Nilsson Heating stove and method for the combustion of fuels in heating stoves
US4789801A (en) * 1986-03-06 1988-12-06 Zenion Industries, Inc. Electrokinetic transducing methods and apparatus and systems comprising or utilizing the same
US4812711A (en) * 1985-06-06 1989-03-14 Astra-Vent Ab Corona discharge air transporting arrangement
US4955991A (en) * 1986-04-21 1990-09-11 Astra-Vent Ab Arrangement for generating an electric corona discharge in air
US5042997A (en) * 1990-07-27 1991-08-27 Rhodes James A Air control system providing healthful enclosed environment
US5055115A (en) * 1988-12-23 1991-10-08 Hiroaki Kanazawa Air cleaner including an electrostatic precipitator
US5071455A (en) * 1990-06-11 1991-12-10 Carrier Corporation Air cleaner installation
US5077500A (en) * 1987-02-05 1991-12-31 Astra-Vent Ab Air transporting arrangement
US5144941A (en) * 1990-03-30 1992-09-08 Kabushiki Kaisha Toshiba Combustion system for suppressing emission of gases believed to cause green-house-effect
US5422331A (en) * 1994-02-25 1995-06-06 Engelhard Corporation Layered catalyst composition
US5667564A (en) * 1996-08-14 1997-09-16 Wein Products, Inc. Portable personal corona discharge device for destruction of airborne microbes and chemical toxins
US5702244A (en) * 1994-06-15 1997-12-30 Thermal Energy Systems, Incorporated Apparatus and method for reducing particulate emissions from combustion processes
US5958112A (en) * 1996-07-10 1999-09-28 Kabushiki Kaisya O-Den Air-cleaning apparatus
US6129781A (en) * 1997-06-18 2000-10-10 Funai Electric Co., Ltd. Air conditioning apparatus with an air cleaning function and electric dust collector for use in the same
US6176977B1 (en) * 1998-11-05 2001-01-23 Sharper Image Corporation Electro-kinetic air transporter-conditioner
US6287368B1 (en) * 1989-08-25 2001-09-11 Oy Airtunnel Ltd. Apparatus for the purification of air flue gases, or equivalent
US20010032544A1 (en) * 1999-02-12 2001-10-25 Sharper Image Corporation Electro-kinetic ionic air refreshener-conditioner for pet shelter and litter box
US6375905B1 (en) * 2000-02-11 2002-04-23 Engelhard Corporation Corrugated metal substrate and coated product for ozone conversion
US6375902B1 (en) * 1999-05-24 2002-04-23 Engelhard Corporation Method, apparatus and composition for removing pollutants from the atmosphere
US6464754B1 (en) * 1999-10-07 2002-10-15 Kairos, L.L.C. Self-cleaning air purification system and process
US6504308B1 (en) * 1998-10-16 2003-01-07 Kronos Air Technologies, Inc. Electrostatic fluid accelerator
US6508982B1 (en) * 1998-04-27 2003-01-21 Kabushiki Kaisha Seisui Air-cleaning apparatus and air-cleaning method
US20030024487A1 (en) * 2001-08-02 2003-02-06 Aos Holding Company Water heater having flue damper with airflow apparatus
US6635106B2 (en) * 2000-03-03 2003-10-21 Matsushita Seiko Co., Ltd. Dust collecting apparatus and air-conditioning apparatus
US6664741B1 (en) * 2002-06-21 2003-12-16 Igor A. Krichtafovitch Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US20040004440A1 (en) * 2002-07-03 2004-01-08 Krichtafovitch Igor A. Electrostatic fluid accelerator for and a method of controlling fluid flow
US20040004797A1 (en) * 2002-07-03 2004-01-08 Krichtafovitch Igor A. Spark management method and device
US6699529B2 (en) * 2002-05-20 2004-03-02 Engelhard Corporation Method for coating vehicular radiators with ozone depleting slurry catalyst
US20040155612A1 (en) * 2003-01-28 2004-08-12 Krichtafovitch Igor A. Electrostatic fluid accelerator for and method of controlling a fluid flow
US20040183454A1 (en) * 2002-06-21 2004-09-23 Krichtafovitch Igor A. Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US20040212329A1 (en) * 2002-07-03 2004-10-28 Krichtafovitch Igor A. Electrostatic fluid accelerator for and a method of controlling fluid flow
USD499476S1 (en) * 2003-09-25 2004-12-07 Homedics, Inc. Air cleaner
USD500848S1 (en) * 2003-09-25 2005-01-11 Homedics, Inc. Air cleaner
USD501042S1 (en) * 2003-09-25 2005-01-18 Homedics, Inc. Air cleaner
US20050011512A1 (en) * 2002-04-09 2005-01-20 Hon Technology, Inc. Air filtration and sterilization system for a fireplace
US20050214186A1 (en) * 2004-03-26 2005-09-29 Honeywell International Inc. Ozone removal system and method for low and high temperature operation
US20060112829A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Fanless indoor air quality treatment
US20060112828A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Spot ventilators and method for spot ventilating bathrooms, kitchens and closets
US20060113398A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Temperature control with induced airflow
US20060114637A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Fanless building ventilator
US20060112708A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Corona-discharge air mover and purifier for packaged terminal and room air conditioners
US20060125648A1 (en) * 2004-11-30 2006-06-15 Ranco Incorporated Of Delaware Surface mount or low profile hazardous condition detector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6257662A (en) * 1985-09-05 1987-03-13 Nippon Denso Co Ltd Air cleaner
JPS63201437A (en) * 1987-02-17 1988-08-19 Matsushita Electric Ind Co Ltd Air conditioner
JPH0821362B2 (en) * 1989-02-15 1996-03-04 和俊 浅野 Ion blower
CA2117222A1 (en) * 1994-03-08 1995-09-09 Mervin Peter Kulaway Gas fireplace air intake filter
JPH1043628A (en) * 1996-07-31 1998-02-17 Matsushita Electric Ind Co Ltd Ion-wind air cleaner

Patent Citations (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765975A (en) * 1952-11-29 1956-10-09 Rca Corp Ionic wind generating duct
US2795401A (en) * 1953-09-23 1957-06-11 Air Preheater Precipitator intermediate series air heaters
US3504482A (en) * 1965-01-22 1970-04-07 William H Goettl Electrostatic air cleaner and control means therefor
US3503348A (en) * 1968-08-30 1970-03-31 Hagan Ind Inc Incinerator
US3638058A (en) * 1970-06-08 1972-01-25 Robert S Fritzius Ion wind generator
US3699387A (en) * 1970-06-25 1972-10-17 Harrison F Edwards Ionic wind machine
US3751715A (en) * 1972-07-24 1973-08-07 H Edwards Ionic wind machine
US3973927A (en) * 1974-01-22 1976-08-10 Helmut Furchner Process and installation for creating optimum climatic conditions in a room by air purification and ionization control
US4076011A (en) * 1976-06-21 1978-02-28 Roger Proulx Warm air heating and fire-place system
US4231766A (en) * 1978-12-11 1980-11-04 United Air Specialists, Inc. Two stage electrostatic precipitator with electric field induced airflow
US4210847A (en) * 1978-12-28 1980-07-01 The United States Of America As Represented By The Secretary Of The Navy Electric wind generator
US4380720A (en) * 1979-11-20 1983-04-19 Fleck Carl M Apparatus for producing a directed flow of a gaseous medium utilizing the electric wind principle
US4325353A (en) * 1980-05-02 1982-04-20 Husa Marlin V Heating apparatus
US4343776A (en) * 1980-12-22 1982-08-10 Engelhard Corporation Ozone abatement catalyst having improved durability and low temperature performance
US4405507A (en) * 1980-12-22 1983-09-20 Engelhard Corporation Ozone abatement catalyst having improved durability and low temperature performance
US4470834A (en) * 1982-12-02 1984-09-11 Grabber Enterprises Air filter
US4643745A (en) * 1983-12-20 1987-02-17 Nippon Soken, Inc. Air cleaner using ionic wind
US4694817A (en) * 1984-03-30 1987-09-22 Sture Nilsson Heating stove and method for the combustion of fuels in heating stoves
US4675029A (en) * 1984-11-21 1987-06-23 Geoenergy International, Corp. Apparatus and method for treating the emission products of a wood burning stove
US4812711A (en) * 1985-06-06 1989-03-14 Astra-Vent Ab Corona discharge air transporting arrangement
US4789801A (en) * 1986-03-06 1988-12-06 Zenion Industries, Inc. Electrokinetic transducing methods and apparatus and systems comprising or utilizing the same
US4955991A (en) * 1986-04-21 1990-09-11 Astra-Vent Ab Arrangement for generating an electric corona discharge in air
US5077500A (en) * 1987-02-05 1991-12-31 Astra-Vent Ab Air transporting arrangement
US5055115A (en) * 1988-12-23 1991-10-08 Hiroaki Kanazawa Air cleaner including an electrostatic precipitator
US6287368B1 (en) * 1989-08-25 2001-09-11 Oy Airtunnel Ltd. Apparatus for the purification of air flue gases, or equivalent
US5144941A (en) * 1990-03-30 1992-09-08 Kabushiki Kaisha Toshiba Combustion system for suppressing emission of gases believed to cause green-house-effect
US5071455A (en) * 1990-06-11 1991-12-10 Carrier Corporation Air cleaner installation
US5042997A (en) * 1990-07-27 1991-08-27 Rhodes James A Air control system providing healthful enclosed environment
US5422331A (en) * 1994-02-25 1995-06-06 Engelhard Corporation Layered catalyst composition
US5702244A (en) * 1994-06-15 1997-12-30 Thermal Energy Systems, Incorporated Apparatus and method for reducing particulate emissions from combustion processes
US5958112A (en) * 1996-07-10 1999-09-28 Kabushiki Kaisya O-Den Air-cleaning apparatus
US5667564A (en) * 1996-08-14 1997-09-16 Wein Products, Inc. Portable personal corona discharge device for destruction of airborne microbes and chemical toxins
US6129781A (en) * 1997-06-18 2000-10-10 Funai Electric Co., Ltd. Air conditioning apparatus with an air cleaning function and electric dust collector for use in the same
US6508982B1 (en) * 1998-04-27 2003-01-21 Kabushiki Kaisha Seisui Air-cleaning apparatus and air-cleaning method
US6504308B1 (en) * 1998-10-16 2003-01-07 Kronos Air Technologies, Inc. Electrostatic fluid accelerator
US20030090209A1 (en) * 1998-10-16 2003-05-15 Krichtafovitch Igor A. Electrostatic fluid accelerator
US6176977B1 (en) * 1998-11-05 2001-01-23 Sharper Image Corporation Electro-kinetic air transporter-conditioner
US20010032544A1 (en) * 1999-02-12 2001-10-25 Sharper Image Corporation Electro-kinetic ionic air refreshener-conditioner for pet shelter and litter box
US6375902B1 (en) * 1999-05-24 2002-04-23 Engelhard Corporation Method, apparatus and composition for removing pollutants from the atmosphere
US6464754B1 (en) * 1999-10-07 2002-10-15 Kairos, L.L.C. Self-cleaning air purification system and process
US6375905B1 (en) * 2000-02-11 2002-04-23 Engelhard Corporation Corrugated metal substrate and coated product for ozone conversion
US6635106B2 (en) * 2000-03-03 2003-10-21 Matsushita Seiko Co., Ltd. Dust collecting apparatus and air-conditioning apparatus
US20030024487A1 (en) * 2001-08-02 2003-02-06 Aos Holding Company Water heater having flue damper with airflow apparatus
US20050011512A1 (en) * 2002-04-09 2005-01-20 Hon Technology, Inc. Air filtration and sterilization system for a fireplace
US6699529B2 (en) * 2002-05-20 2004-03-02 Engelhard Corporation Method for coating vehicular radiators with ozone depleting slurry catalyst
US6664741B1 (en) * 2002-06-21 2003-12-16 Igor A. Krichtafovitch Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US20030234618A1 (en) * 2002-06-21 2003-12-25 Krichtafovitch Igor A. Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US20040183454A1 (en) * 2002-06-21 2004-09-23 Krichtafovitch Igor A. Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US20040004797A1 (en) * 2002-07-03 2004-01-08 Krichtafovitch Igor A. Spark management method and device
US6727657B2 (en) * 2002-07-03 2004-04-27 Kronos Advanced Technologies, Inc. Electrostatic fluid accelerator for and a method of controlling fluid flow
US20040212329A1 (en) * 2002-07-03 2004-10-28 Krichtafovitch Igor A. Electrostatic fluid accelerator for and a method of controlling fluid flow
US20040217720A1 (en) * 2002-07-03 2004-11-04 Krichtafovitch Igor A. Electrostatic fluid accelerator for and a method of controlling fluid flow
US20040004440A1 (en) * 2002-07-03 2004-01-08 Krichtafovitch Igor A. Electrostatic fluid accelerator for and a method of controlling fluid flow
US20040155612A1 (en) * 2003-01-28 2004-08-12 Krichtafovitch Igor A. Electrostatic fluid accelerator for and method of controlling a fluid flow
USD499476S1 (en) * 2003-09-25 2004-12-07 Homedics, Inc. Air cleaner
USD501042S1 (en) * 2003-09-25 2005-01-18 Homedics, Inc. Air cleaner
USD500848S1 (en) * 2003-09-25 2005-01-11 Homedics, Inc. Air cleaner
US20050214186A1 (en) * 2004-03-26 2005-09-29 Honeywell International Inc. Ozone removal system and method for low and high temperature operation
US20060112829A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Fanless indoor air quality treatment
US20060112828A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Spot ventilators and method for spot ventilating bathrooms, kitchens and closets
US20060113398A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Temperature control with induced airflow
US20060114637A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Fanless building ventilator
US20060112708A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Corona-discharge air mover and purifier for packaged terminal and room air conditioners
US20060125648A1 (en) * 2004-11-30 2006-06-15 Ranco Incorporated Of Delaware Surface mount or low profile hazardous condition detector

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7417553B2 (en) 2004-11-30 2008-08-26 Young Scott G Surface mount or low profile hazardous condition detector
US20060112829A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Fanless indoor air quality treatment
US20060114637A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Fanless building ventilator
US20060112708A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Corona-discharge air mover and purifier for packaged terminal and room air conditioners
US20060125648A1 (en) * 2004-11-30 2006-06-15 Ranco Incorporated Of Delaware Surface mount or low profile hazardous condition detector
US7182805B2 (en) 2004-11-30 2007-02-27 Ranco Incorporated Of Delaware Corona-discharge air mover and purifier for packaged terminal and room air conditioners
US7226497B2 (en) 2004-11-30 2007-06-05 Ranco Incorporated Of Delaware Fanless building ventilator
US20060112828A1 (en) * 2004-11-30 2006-06-01 Ranco Incorporated Of Delaware Spot ventilators and method for spot ventilating bathrooms, kitchens and closets
US7311756B2 (en) 2004-11-30 2007-12-25 Ranco Incorporated Of Delaware Fanless indoor air quality treatment
US7226496B2 (en) 2004-11-30 2007-06-05 Ranco Incorporated Of Delaware Spot ventilators and method for spot ventilating bathrooms, kitchens and closets
WO2008051535A2 (en) * 2006-10-24 2008-05-02 Krichtafovitch Igor A Fireplace with electrostatically assisted heat transfer and method of assisting heat transfer in combustion powered heating devices
WO2008051535A3 (en) * 2006-10-24 2008-09-12 Igor A Krichtafovitch Fireplace with electrostatically assisted heat transfer and method of assisting heat transfer in combustion powered heating devices
US20100037886A1 (en) * 2006-10-24 2010-02-18 Krichtafovitch Igor A Fireplace with electrostatically assisted heat transfer and method of assisting heat transfer in combustion powered heating devices
US20100210203A1 (en) * 2009-02-19 2010-08-19 Randy Amerson Room sensor using charged particle airflow
US9863656B2 (en) * 2009-02-19 2018-01-09 Siemens Industry, Inc. Room sensor using charged particle airflow
US20120012100A1 (en) * 2010-07-13 2012-01-19 Mark Klein Hood for emission control for fireplace
US9874352B2 (en) * 2010-07-13 2018-01-23 Innovative Hearth Products, Llc Hood for emission control for fireplace
US11231177B2 (en) * 2016-01-20 2022-01-25 Fpi Fireplace Products International Ltd. Fireplace system, heat exchanger and method
US11635231B2 (en) 2019-09-03 2023-04-25 Sl-Technik Gmbh Rotating grate with a cleaning device for a biomass heating system
US11708999B2 (en) 2019-09-03 2023-07-25 Sl-Technik Gmbh Biomass heating system with optimized flue gas treatment

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