US3096426A - Electrical paint heater - Google Patents
Electrical paint heater Download PDFInfo
- Publication number
- US3096426A US3096426A US100057A US10005761A US3096426A US 3096426 A US3096426 A US 3096426A US 100057 A US100057 A US 100057A US 10005761 A US10005761 A US 10005761A US 3096426 A US3096426 A US 3096426A
- Authority
- US
- United States
- Prior art keywords
- paint
- channel
- groove
- heating element
- inlet
- 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.)
- Expired - Lifetime
Links
- 239000003973 paint Substances 0.000 title claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910000551 Silumin Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/1606—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air
- B05B7/1613—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
- B05B7/1646—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed the material to be sprayed and the atomising fluid being heated by the same source of heat, without transfer of heat between atomising fluid and material to be sprayed
-
- 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
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/121—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Description
y 2, 1963 E. A. A. AXELSON ELECTRICAL PAINT HEATER Filed April 3, 1961 United States Patent 3,096,426 ELECTRICAL PAINT HEATER Eskil Anders August Axelson, 13 Kungsholmgatau, Stockholm, Sweden Filed Apr. 3, 1961, Ser. No. 100,057 Claims priority, application Sweden Apr. 6, 1960 3 Claims. (Cl. 219-38) This invention relates to an electrical flow heater adapted for heating liquids, and more particularly paints which are to be applied by a spray painting technique.
It is an object of the invention to provide an improved flow heater for paints which will deliver paint in a particular temperature range to a sprayer even following an interruption in the spraying operation.
It is previously known to heat paint by causing the paint to flow through an electrically heated, thermostatcontrolled cylindrical metal body having a uniform helical groove in its periphery, which groove forms with a surrounding cylindrical pipe a channel for the paint flow.
In the aforesaid construction the paint flow channel is uniform all along its length and provides a constant cross-sectional area for the paint. The paint, however, enters the heating channel at room temperature and is thick and viscous whereas the paint leaves the channel at a higher temperature and is thinner and less viscous. 'In order to reduce the pressure drop while the paint flows through the flow channel, and at the same time to increase the heat absorption, the channel should not be uniform, but should have a cross-sectional area which is largest at the inlet of the channel and which decreases towards the outlet. The variation in the channel crosssectional area is preferably achieved by keeping the inner diameter of the channel constant throughout its length, and the outer diameter largest at the inlet of the channel while decreasing gradually towards the outlet of the channel. The metal body thus is of frusto-conical shape which permits the manufacture of both the metal body and the casing by chill casting or pressure casting.
The paint heater is provided with a heating element and a controlling thermostat, which prevents the paint contained within the heater from being overheated for example during an interruption in the spraying operation. The thermostat maintains the paint in a particular temperature range which for hot spraying is preferably between 50 C. and 90 C. It is essential, however, that the paint which is contained in the paint supply line (usually a rubber hose) extending from the paint heater to the spray gun he maintained at a substantially constant temperature when the spraying operation is interrupted. For this purpose, the metal body is provided with a steel tube, for example of U shape, which is cast into the metal body and secured by welding to two bore channels in a steel flange which is secured to the metal body. Welded onto the opposite side of the said flange is a coupling housing for enclosing electrical connection. The compressed =air passing through the said channels and the U- shaped steel tube is heated to approximately the same temperature as the paint. By directing the heated compressed air into a casing which, for example, surrounds the paint hose, the paint in the paint hose is heated during an interruption in the spraying operation and thereby is substantially maintained at operating temperature.
The said heat conducting frusto-conical metal body contains cast-in tubes for the electrical element, the thermostat, a safety-fuse and the tube for hot air. -An embodiment of the paint heater according to the invention is illustrated in the following drawing wherein the paint heater is shown in side view and partly in section.
Referring to the drawing, numeral 1 designates the body which may be cast of silumin or aluminum. Within the body are encased a tube 2 for the electrical element, a tube 3 for the thermostat and a tube 4 for the fuse. A U-shaped tube 5 for the compressed air is also encased within the body and is provided with an inlet and outlet for the air. The body is of frusto-conical shape and in the periphery -8 of the body there is provided a helical groove 9. The groove decreases in depth in relation to decreasing diameter of the body. A frusto-conical casing .10 having a smooth inner surface surrounds the body and is in peripheral sealed contact with the portions 11 of the body 1. The groove 9 forms a closed helical channel through which the paint is adapted to pass. An inlet '12 and an outlet 13 are provided in the casing in communication with the groove '9 for the circulation of the paint through the helical channel. The U-shaped tube 5 is encased within the body in a peripheral zone between the tubes 2, 3, 4 and the helical groove 9. A flange is supported on the body 1 and is provided with laterally extending channels 6, 7 which are respectively in communication with the inlet and outlet of the U-shaped tube 5. A housing '14 is secured to the flange on the side thereof away from the body :1, the housing accommodating the electrical connections for the heater, thermostat and fuse.
What I claim is:
1. An electrical flow heater for paint and compressed air comprising: a one piece thermally conductive body, a heating element encased in said body, said body being of frusto-conical shape and being provided with a helical groove peripherally formed therein, said groove decreasing in depth in relation to the decreasing diameter of said body, a frusto-conical casing having a smooth inner surface surrounding said body and in substantially peripheral sealing contact with said body whereby said helical groove provides a closed helical channel, said casing being provided with openings in communication with said groove atopposite ends of the body to constitute an inlet and an outlet for said channel to enable the circulation of paint through said channel, said paint absorbing heat from the body which is heated by the heating element as the paint traverses said path, and a U-shaped tube having an inlet and an outlet for air encased within said body, said tube extending in a peripheral zone in said body between the heating element and the closed channel.
2. A heater as claimed in claim 1 wherein the inlet is in communication with the helical groove at the maximum depth thereof and the outlet is in communication with the helical groove at the minimum depth thereof.
3. A heater as claimed in claim 1 comprising a flange supported on said one-piece body to permit installation of said body, said flange including channels therein in communieation with said tube inlet and outlet, said channels extending laterally in said flange.
References Cited in the file of this patent UNITED STATES PATENTS 2,576,558 Bede Nov. 27, 1951 2,592,340 Ronceray Apr. 8, 1952. 2,673,919 Arvins et a1 Mar. 30, 1954 FOREIGN PATENTS 551,330 France Jan. 6, v1923
Claims (1)
1. AN ELECTRICAL FLOW HEATER FOR PAINT AND COMPRESSED AIR COMPRISING: A ONE PIECE THERMALLY CONDUCTIVE BODY, A HEATING ELEMENT ENCASED IN SAID BODY, SIAD BODY BEING OF FRUSTO-CONICAL SHAPE AND BEING PROVIDED WITH A HELICAL GROOVE PERPHERALLY FORMED THEREIN, SAID GROOVE DECREASING IN DEPTH IN RELATION TO THE DECREASING DIAMETER OF SAID BODY, A FRUSTO-CONICAL CASING HAVING A SMOOTH INNER SURFACE SURROUNDING SAID BODY AND IN SUBSTANTIALLY PERIPHERAL SEALING CONTACT WITH SAID BODY WHEREBY SAID HELICAL GROOVE PROVIDES A CLOSED HELICAL CHANNEL, SAID CASING BEING PROVIDED WITH OPENINGS IN COMMUNICATION WITH SAID GROOVE AT OPPOSITE ENDS OF THE BODY TO CONSTITUTE AN INLET AND AN OUTLET FOR SAID CHANNEL TO ENABLE THE CIRCULATION OF PAINT THROUGH SAID CHANNEL, SAID PAINT ABSORBING HEAT FROM THE BODY WHICH IS HEATED BY THE HEATING ELEMENT AS THE PAINT TRAVERSES SAID PATH, AND A U-SHAPED TUBE HAVING AN INLET AND AN OUTLET FOR AIR ENCASED WITHIN SAID BODY, SAID TUBE EXTENDING IN A PERIPHERAL ZONE IN SAID BODY BETWEEN THE HEATING ELEMENT AND THE CLOSED CHANNEL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE3096426X | 1960-04-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3096426A true US3096426A (en) | 1963-07-02 |
Family
ID=20428531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US100057A Expired - Lifetime US3096426A (en) | 1960-04-06 | 1961-04-03 | Electrical paint heater |
Country Status (2)
Country | Link |
---|---|
US (1) | US3096426A (en) |
DE (1) | DE1176031B (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3584194A (en) * | 1969-05-23 | 1971-06-08 | Aro Corp | Fluid heating techniques |
US3835294A (en) * | 1973-04-06 | 1974-09-10 | Binks Mfg Co | High pressure electric fluid heater |
US3927301A (en) * | 1973-09-19 | 1975-12-16 | Hasco Normalien Hasenclever Co | Electrical heating cartridge |
US4084587A (en) * | 1975-07-17 | 1978-04-18 | Arbrook, Inc. | Fluid heating apparatus |
EP0044040A2 (en) * | 1980-07-12 | 1982-01-20 | E.G.O. Elektro-Geräte Blanc u. Fischer | Electrically heated apparatus for domestic use |
WO1998014736A1 (en) * | 1996-10-01 | 1998-04-09 | Baxter International Inc. | Blood warming apparatus |
US6047108A (en) * | 1996-10-01 | 2000-04-04 | Baxter International Inc. | Blood warming apparatus |
EP1430922A1 (en) * | 2002-11-19 | 2004-06-23 | Transmed Medizintechnik GmbH & Co. KG | Device for maintaining fluid temperature in a tube |
US20080128530A1 (en) * | 2004-11-24 | 2008-06-05 | Eurosider S.A.S. Di Milli Ottavio & C. | Heated Spray Painting System |
ITAQ20090004A1 (en) * | 2009-11-19 | 2011-05-19 | Asel Srl | WATER HEATER DEVICE |
US20120103968A1 (en) * | 2010-10-28 | 2012-05-03 | Feng-Hui Lu | Oil water mixture heating apparatus |
US20160178235A1 (en) * | 2014-12-22 | 2016-06-23 | Horiba Stec, Co., Ltd. | Fluid heater |
US20190011151A1 (en) * | 2015-12-28 | 2019-01-10 | C3 Casting Competence Center Gmbh | Throughflow heater |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR551330A (en) * | 1922-05-12 | 1923-04-03 | Water vaporizer and heater | |
US2576558A (en) * | 1948-11-24 | 1951-11-27 | James A Bede | Paint heater |
US2592340A (en) * | 1948-01-20 | 1952-04-08 | Ronceray Robert Andre | Apparatus for the preheating of pattern plates |
US2673919A (en) * | 1952-01-29 | 1954-03-30 | Arvins Viscolator Corp | Fluid preheater |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE504831A (en) * | 1950-07-24 |
-
1961
- 1961-03-29 DE DEA37081A patent/DE1176031B/en active Pending
- 1961-04-03 US US100057A patent/US3096426A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR551330A (en) * | 1922-05-12 | 1923-04-03 | Water vaporizer and heater | |
US2592340A (en) * | 1948-01-20 | 1952-04-08 | Ronceray Robert Andre | Apparatus for the preheating of pattern plates |
US2576558A (en) * | 1948-11-24 | 1951-11-27 | James A Bede | Paint heater |
US2673919A (en) * | 1952-01-29 | 1954-03-30 | Arvins Viscolator Corp | Fluid preheater |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3584194A (en) * | 1969-05-23 | 1971-06-08 | Aro Corp | Fluid heating techniques |
US3835294A (en) * | 1973-04-06 | 1974-09-10 | Binks Mfg Co | High pressure electric fluid heater |
US3927301A (en) * | 1973-09-19 | 1975-12-16 | Hasco Normalien Hasenclever Co | Electrical heating cartridge |
US4084587A (en) * | 1975-07-17 | 1978-04-18 | Arbrook, Inc. | Fluid heating apparatus |
EP0044040A2 (en) * | 1980-07-12 | 1982-01-20 | E.G.O. Elektro-Geräte Blanc u. Fischer | Electrically heated apparatus for domestic use |
EP0044040A3 (en) * | 1980-07-12 | 1982-10-27 | E.G.O. Elektro-Geräte Blanc u. Fischer | Electrically heated apparatus for domestic use |
US6047108A (en) * | 1996-10-01 | 2000-04-04 | Baxter International Inc. | Blood warming apparatus |
US5846224A (en) * | 1996-10-01 | 1998-12-08 | Baxter International Inc. | Container for use with blood warming apparatus |
WO1998014736A1 (en) * | 1996-10-01 | 1998-04-09 | Baxter International Inc. | Blood warming apparatus |
EP1430922A1 (en) * | 2002-11-19 | 2004-06-23 | Transmed Medizintechnik GmbH & Co. KG | Device for maintaining fluid temperature in a tube |
US20080128530A1 (en) * | 2004-11-24 | 2008-06-05 | Eurosider S.A.S. Di Milli Ottavio & C. | Heated Spray Painting System |
US7936982B2 (en) * | 2004-11-24 | 2011-05-03 | Eurosider S.A.S. Di Milli Ottavio & C. | Heated spray painting system |
ITAQ20090004A1 (en) * | 2009-11-19 | 2011-05-19 | Asel Srl | WATER HEATER DEVICE |
US20120103968A1 (en) * | 2010-10-28 | 2012-05-03 | Feng-Hui Lu | Oil water mixture heating apparatus |
US8350193B2 (en) * | 2010-10-28 | 2013-01-08 | Feng-Hui Lu | Oil water mixture heating apparatus |
US20160178235A1 (en) * | 2014-12-22 | 2016-06-23 | Horiba Stec, Co., Ltd. | Fluid heater |
US10775075B2 (en) * | 2014-12-22 | 2020-09-15 | Horiba Stec, Co., Ltd. | Fluid heater |
US20190011151A1 (en) * | 2015-12-28 | 2019-01-10 | C3 Casting Competence Center Gmbh | Throughflow heater |
Also Published As
Publication number | Publication date |
---|---|
DE1176031B (en) | 1964-08-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3096426A (en) | Electrical paint heater | |
US3584194A (en) | Fluid heating techniques | |
US4199675A (en) | Electric fluid heater | |
US4590888A (en) | Water heater | |
US2576558A (en) | Paint heater | |
US4465922A (en) | Electric heater for heating high solids fluid coating materials | |
US2878063A (en) | Resin gun | |
US7158718B2 (en) | Electric heating device | |
US3835294A (en) | High pressure electric fluid heater | |
US4437488A (en) | Solenoid valve for hot melt material | |
US20110069943A1 (en) | Apparatus for Heating Fluids | |
KR20000005168A (en) | Fluid heater | |
US10981545B2 (en) | Telescopic cleaning device | |
KR20160099154A (en) | Instntaneous heating apparatus | |
CN106051214B (en) | A kind of water mixing valve of automatic water temperature regulation | |
US4264818A (en) | Single-tank X-ray generator | |
US4317529A (en) | Device for the melting and the dose discharge of thermoplastic material | |
CA3004562A1 (en) | Vehicle heater | |
USRE26000E (en) | Electrical paint heater | |
US2382489A (en) | Connection for containers | |
IE86770B1 (en) | A device for the passage of a volume of fluid | |
US2583761A (en) | Pipe or hose conduit with heating means | |
US4580037A (en) | Electrically operated heated element with a flow channel for molten plastic | |
US2460861A (en) | Liquid sprayer | |
US2526405A (en) | Spray head |