CA2126127A1 - Water heating apparatus with passive flue gas recirculation - Google Patents

Water heating apparatus with passive flue gas recirculation

Info

Publication number
CA2126127A1
CA2126127A1 CA002126127A CA2126127A CA2126127A1 CA 2126127 A1 CA2126127 A1 CA 2126127A1 CA 002126127 A CA002126127 A CA 002126127A CA 2126127 A CA2126127 A CA 2126127A CA 2126127 A1 CA2126127 A1 CA 2126127A1
Authority
CA
Canada
Prior art keywords
flue gas
heating apparatus
water heating
gas recirculation
passively
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002126127A
Other languages
French (fr)
Other versions
CA2126127C (en
Inventor
Mark A. Ferguson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PVI Industries LLC
Original Assignee
PVI Industries LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PVI Industries LLC filed Critical PVI Industries LLC
Publication of CA2126127A1 publication Critical patent/CA2126127A1/en
Application granted granted Critical
Publication of CA2126127C publication Critical patent/CA2126127C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/004—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for submerged combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/08—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/205—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes with furnace tubes
    • F24H1/206—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes with furnace tubes with submerged combustion chamber

Abstract

The invention relates to a water heating apparatus and method to passively recirculate flue gas in order to reduce NO x emissions formed during combustion. The apparatus uses a high efficiency burner, a submergible, pressurized, combustion chamber having multiple external heating surfaces, and a flue collector that collects and passively recirculates a portion of the flue gases back into the burner air intake while exhausting the rest. The multiple external heating surfaces are installed within a closed tank and are submerged in water under pressure during use.
CA002126127A 1993-06-17 1994-06-17 Water heating apparatus with passive flue gas recirculation Expired - Fee Related CA2126127C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7915693A 1993-06-17 1993-06-17
US079,156 1993-06-17

Publications (2)

Publication Number Publication Date
CA2126127A1 true CA2126127A1 (en) 1994-12-18
CA2126127C CA2126127C (en) 2005-08-30

Family

ID=22148787

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002126127A Expired - Fee Related CA2126127C (en) 1993-06-17 1994-06-17 Water heating apparatus with passive flue gas recirculation

Country Status (3)

Country Link
US (1) US5666944A (en)
CA (1) CA2126127C (en)
MX (1) MX9404582A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6089223A (en) * 1998-01-28 2000-07-18 Webco Industries, Incorporated Direct contact water heating system
US6296050B1 (en) 1998-08-14 2001-10-02 Brinck, Ii Joseph A. Heat exchanger
WO2000010912A1 (en) * 1998-08-19 2000-03-02 Methanex Corporation Method for performing a process wherein a feedstock is subjected to an endothermic reaction
US6095792A (en) * 1998-08-21 2000-08-01 Texaco Inc. Flue gas recirculation system and method
AUPP616198A0 (en) * 1998-09-24 1998-10-15 Southcorp Australia Pty Ltd Natural draft water heater
US6572367B1 (en) * 2002-05-21 2003-06-03 Itt Manufacturing Enterprises, Inc. Horizontally oriented combustion apparatus
DE102004062185C5 (en) * 2004-12-23 2013-09-26 Elco Burners Gmbh Holding device for attaching a fan burner to a combustion chamber housing
US8047164B2 (en) * 2008-06-12 2011-11-01 Aos Holding Company Removable heat exchanger for a gas fired water heater
US9004018B2 (en) * 2010-03-08 2015-04-14 Rheem Manufacturing Company High efficiency gas-fired water heater
US9982886B2 (en) 2012-07-06 2018-05-29 Honeywell International Inc. Flue gas recycle system with fixed orifices
US9714774B2 (en) 2012-08-22 2017-07-25 Rheem Manufacturing Company Downfired high efficiency gas-fired water heater
US20160370030A1 (en) 2015-06-18 2016-12-22 Cleaver-Brooks, Inc. Reduced size fire tube boiler system and method of operating same
CN109099417B (en) * 2018-09-18 2024-03-12 宁波远康动力设备有限公司 Low NOx combustion method and device for forced internal circulation of flue gas

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502664A (en) * 1947-10-06 1950-04-04 Gen Oil Burner Corp Gun type oil burner
US3097686A (en) * 1960-05-12 1963-07-16 Product Dev Associates Ltd Furnace system
DE2365186A1 (en) * 1973-12-29 1975-07-10 Elco Oelbrennerwerk Ag Liquid fuel combustion with blue, soot-free flame - obtained by feeding flue gas controllably to fresh air intake
US4465024A (en) * 1982-04-16 1984-08-14 Pvi Industries Incorporated Water heater
US4545329A (en) * 1983-09-23 1985-10-08 Pvi Industries, Inc. Water heater
EP0271111B1 (en) * 1986-12-11 1991-05-29 Dreizler, Walter Boiler using exterior recycling of combustion gases
DE4006805A1 (en) * 1990-03-05 1991-09-12 Kloeckner Waermetechnik BURNER WITH EXHAUST GAS RECIRCULATION, IN PARTICULAR BLOWER BURNER
US5129818A (en) * 1990-09-14 1992-07-14 Benno Balsiger Method of feeding back exhaust gases in oil and gas burners

Also Published As

Publication number Publication date
MX9404582A (en) 1995-01-31
US5666944A (en) 1997-09-16
CA2126127C (en) 2005-08-30

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed