WO2005080871A1 - Systeme d'alimentation en gaz pourvu d'une soufflante de premelange - Google Patents

Systeme d'alimentation en gaz pourvu d'une soufflante de premelange Download PDF

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Publication number
WO2005080871A1
WO2005080871A1 PCT/US2005/004816 US2005004816W WO2005080871A1 WO 2005080871 A1 WO2005080871 A1 WO 2005080871A1 US 2005004816 W US2005004816 W US 2005004816W WO 2005080871 A1 WO2005080871 A1 WO 2005080871A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
blower housing
air
gas supply
supply conduit
Prior art date
Application number
PCT/US2005/004816
Other languages
English (en)
Inventor
Michael K. Garrett
Darrell E. Pueppke
Original Assignee
Fasco Industries, Inc.
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 Fasco Industries, Inc. filed Critical Fasco Industries, Inc.
Publication of WO2005080871A1 publication Critical patent/WO2005080871A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors

Definitions

  • the present invention relates to gas delivery systems for gas-operated appliances, and in particular, relates to a gas delivery system for the gas burner assembly of a water heater.
  • Gas water heaters are used in residential and commercial applications to heat cold water from a water source, and to store heated water for demand-based supply to one or more water taps or other appliances.
  • Gas water heaters generally include an insulated holding tank having a cold water inlet, usually located near the top of the tank, which supplies cold water to the lower portion of the tank through a dip tube.
  • a hot water outlet also typically located near the top of the tank, supplies heated water from the upper portion of the tank to one or more use locations through suitable conduits.
  • a control valve typically mounted near the lower outside portion of the tank of the water heater, is connected to a gas supply.
  • the control valve includes a thermostat which detects the temperature of the water in the tank, and regulates gas delivery from the gas source to one or more gas burners which are located in a burner chamber beneath the tank.
  • the burners are ignited by a pilot light or by a spark ignition system, for example.
  • Gas is supplied by the control valve directly to the ignited burner for combustion in the presence of air, which generates heat for heating the water in the lower portion of the tank.
  • the heated water generally rises to the upper portion of the tank, such that cold water supplied through the end of the dip tube is heated in the lower portion of the tank and thereafter rises to the upper portion of the tank.
  • a vent chimney vents exhaust gases from the burner chamber through suitable conduits to the atmosphere.
  • Some water heaters also include a blower, usually located near the top portion of the tank, for assisting evacuation of the exhaust gases from the burner chamber through the chimney.
  • a problem with the foregoing gas delivery systems is that combustion of the gas by the burner, in which the gas is supplied directly to the burner, tends to produce a relatively large amount of nitrous oxide (NO x ) emissions.
  • the present invention provides a gas delivery system for an appliance, such as a water heater, including a gas control valve and a blower housing assembly which are mounted to the water heater proximate one another.
  • the blower housing assembly includes a motor for driving an impeller within the blower housing, and an outlet of the blower housing is connected to the gas burner assembly of the water heater.
  • a gas supply conduit extends from the control valve into the blower housing, and the outlet of the gas supply conduit is disposed within the blower housing interior near the blower housing inlet and the central portion of the impeller.
  • the present inventors have found that supplying a mixture of air and gas to the burner for combustion, rather than supplying gas directly to the burner as in known gas burner systems currently used in water heaters, results in a cleaner combustion with reduced nitrous oxide emissions. Additionally, the present gas delivery system is easily assembled to the water heater, thus reducing the overall cost of the water heater. [0009]
  • the gas delivery system is assembled to a water heater as follows. First, the gas control valve is mounted to the water heater. Then, the blower housing assembly is mounted to the water heater near the gas control valve. The gas supply conduit is then extended from the blower housing for connection to a compression fitting at the outlet of the control valve. Thereafter, the compression fitting at the control valve outlet is tightened to secure the gas supply conduit to the gas control valve, followed by tightening a compression fitting at the gas inlet of the blower housing to secure the gas supply conduit to the blower housing.
  • the present invention provides a gas supply assembly for supplying an air/gas mixture to the burner assembly of a water heater, including a blower housing assembly, including a blower housing having an inlet, and an outlet in fluid communication with the gas burner assembly; a motor having a rotatable output shaft; and an impeller coupled to the output shaft and disposed within the blower housing; and a gas supply conduit fluidly communicating a source of gas to the blower housing, whereby rotation of the impeller draws air into the blower housing through the inlet, and gas supplied through the gas supply conduit is mixed with the air within the blower housing to form an air/gas mixture which is supplied to the gas burner assembly through the blower housing outlet.
  • the present invention provides a gas supply assembly for supplying an air/gas mixture to the burner assembly of a water heater, including a blower housing assembly, including a blower housing having an inlet, and an outlet in fluid communication with the gas burner assembly; a motor having a rotatable output shaft; and an impeller coupled to the output shaft and disposed within the blower housing; and a control valve fluidly communicating a source of gas to the blower housing, whereby rotation of the impeller draws air into the blower housing through the inlet, and gas supplied through the control valve is mixed with the air within the blower housing to form an air/gas mixture which is supplied to the gas burner assembly through the blower housing outlet.
  • the present invention provides a method of operating a gas supply assembly for a water heater, including the steps of rotating an impeller within a blower housing to induce an air flow through the blower housing; supplying gas from a gas source into the blower housing; mixing the gas with the air flow within the blower housing to form an air/gas mixture; and supplying the air/gas mixture to a burner assembly of the water heater.
  • FIG. 1 is a perspective view of the lower portion of a water heater having a gas delivery system in accordance with the present invention, including a control valve, blower housing, and gas supply conduit;
  • FIG. 2 is a front view of the control valve, blower housing, and gas supply conduit of Fig. 1;
  • Fig. 3 is a section al view taken along line 3-3 of Fig. 2;
  • FIG. 4 is an enlarged fragmentary view of a portion of Fig. 3, showing a compression fitting;
  • Fig. 5 is a perspective view of the blower housing assembly and gas supply conduit, viewed from above, in which the impeller is visible within the blower housing;
  • Fig. 6 is a perspective view of the blower housing assembly and gas supply conduit, viewed from below, in which a portion of the impeller is visible within the blower housing.
  • a water heater 20 which generally includes an insulated holding tank 22, and a gas burner assembly 24 disposed in the lower portion of water heater 20 generally beneath holding tank 22.
  • Gas burner assembly 24 includes a gas manifold 26 and one or more burners (not shown) having spark or hot surface igniters, or example.
  • Water heater 20 additionally includes other known features common to presently manufactured water heaters, such as those discussed above, which do not pertain to the present invention and therefore are not shown and described herein in detail.
  • the gas delivery system or gas supply assembly 38 of the present invention includes a gas control valve 40 mounted to water heater 20 in a suitable manner, such as with screw fasteners, for example.
  • Control valve 40 includes valve body 42 and, as shown in Figs. 2 and 3, gas inlet 44 and gas outlet 46.
  • Gas inlet 44 is connected to a gas supply in a conventional manner, such as to the gas supply in a residential home, for example.
  • Control valve 40 further includes a thermostat with temperature control (not shown) for detecting the temperature of the water in tank 22 of water heater 20, and a control mechanism (not shown) for regulating the supply of gas to the gas burner assembly from the gas source.
  • Control valve 40 may be a SV9560 or SV9570 or similar water heater control, available from Honeywell, Inc., Minneapolis, MN, or a 2000 WIPER/WDER or similar gas heating control, available from RobertShaw Controls Company, Long Beach, CA, for example.
  • Blower housing assembly 50 generally includes blower housing 52, electric motor 54, and impeller 56.
  • Blower housing 52 may include features similar to the blower housings which are disclosed in U.S. Patent Application Serial No. 10/934,004, entitled DRAFT INDUCER BLOWER WITH Z-AXIS VOLUTE, filed on September 3, 2004; U.S. Patent Application Serial No. 10/934,070, entitled LOBED JOINT DRAFT INDUCER BLOWER, filed on September 3, 2004; and U.S. Patent No. 5,954,476 to Stewart et al., each assigned to the assignee of the present invention, the disclosures of which are expressly incorporated therein by reference.
  • Blower housing 52 is mounted to water heater 20 with suitable fasteners which extend through mounting bosses 57 (Fig. 2) into water heater 20 or a suitable bracket (not shown) attached to water heater 20.
  • Blower housing 52 may be made of stamped and/or formed sheet metal components, or alternatively, may be fo ⁇ ned of molded plastic components, and generally includes first housing section 58 connected to second housing section 60 in a suitable manner, such as via a tongue-and-groove snap fit connection of the type disclosed in the above-incorporated U.S. Patent No. 5,954,476 to Stewart et al.
  • First housing section 58 is disposed adjacent water heater 20, and includes a circular inlet opening 62.
  • Motor 54 is mounted to second housing section 60, and includes output shaft 64 extending through a hole in second housing section 60.
  • Motor 54 is electrically connected to control valve 40, and the operation of motor 54 is controlled by control valve 40.
  • Impeller 56 is mounted to the end of output shaft 64, and is rotatably driven by motor 54 within blower housing 52 to draw air into blower housing 52 through inlet opening 62 and to discharge the air through outlet 66 of blower housing 52.
  • Outlet 66 of blower housing 52 is connected to manifold 26 of gas burner assembly 24 beneath tank 22 of water heater 20, and gas burner assembly 24 includes one or more gas burners (not shown) for burning an air/gas mixture which is supplied to the gas burner assembly in the manner described below.
  • first housing section 58 of blower housing 52 additionally includes gas inlet 68 including threaded interior bore 70.
  • Gas supply conduit 72 includes inlet end 74 connected to gas outlet 46 of control valve 40, and also includes outlet end 76.
  • gas supply conduit 72 is connected to gas outlet 46 of control valve 40 and to blower housing 52 by first and second compression fittings 78 and 80.
  • each compression fitting 78 and 80 is identical, and includes nut 82 with external threads 83 for engagement with the internal threads 85 of gas outlet 46 of control valve 40 and threaded bore 70 of gas inlet 68 of blower housing 52.
  • Compression fittings 78 and 80 each additionally include annular ferrule 84, which is deformably and sealingly compressed about the external surface of gas supply conduit 72 upon tightening of nut 82.
  • the gas delivery system 38 may be assembled to water heater 20 in the following manner, although variations in the procedure described below will be apparent to those skilled in the art.
  • control valve 40 is mounted to water heater 20 in a suitable manner.
  • Blower housing assembly 50 is mounted to water heater 20 below gas valve 40 in a suitable manner, and outlet 66 of blower housing 52 is connected to the gas burner assembly of water heater 20.
  • gas supply conduit 72 may be slidably fitted within inlet 68 of blower housing 52 in a downwardly or inwardly- shifted position, in which gas supply conduit 72 is translated toward the interior of blower housing 52.
  • blower housing assembly 50 Following mounting of blower housing assembly 50 to water heater 20, gas supply conduit 72 is translated upwardly or outwardly of blower housing 52 to engage inlet end 74 thereof with gas outlet 46 of control valve 40. Thereafter, nut 82 of first compression fitting 78 is tightened to secure inlet end 74 of gas supply valve 40 to gas outlet 46 of control valve 40. Then, nut 82 of second compression fitting 80 is tightened to secure gas supply conduit 70 to blower housing 52.
  • outlet end 76 of gas supply conduit 72 is disposed closely adjacent the central portion of impeller 56 and at substantially a 90° relationship to the direction of air flow through inlet opening 62 of blower housing 52.
  • outlet end 76 of gas supply conduit 72 is connected to blower housing 52 adjacent inlet opening 62 of blower housing 52 in the manner described herein.
  • air is drawn into blower housing 52 through inlet opening 62, forming a low pressure area at inlet opening 62.
  • control valve 40 may be mounted directly to blower housing 52, wherein the length of gas supply conduit 72 may be reduced, or gas supply conduit 72 may be unnecessary.
  • control valve 40 In operation, when control valve 40 detects via its thermostat that water in tank 22 of water heater 20 needs to be heated, control valve 40 actuates motor 54 to rotate impeller 56 within blower housing 52 to draw inlet air through inlet opening 62 of blower housing 52, and to discharge the air through outlet 66 of blower housing 52 to the gas burner assembly of water heater 20. After a flow of air is established through blower housing 52, control valve 40 supplies gas through gas supply conduit 72, such that the gas exits the gas supply conduit 72 at outlet end 76. The gas is then immediately drawn into the air stream and is intimately mixed with the intake air within blower housing 52 to form an air/gas mixture which is then supplied through outlet 66 of blower housing 52 to gas burner assembly 24 of water heater 20. Control valve 40 may control both the speed of rotation motor 54 and impeller 56, as well as amount of gas which is supplied through gas supply conduit 72 to portion the air/gas mixture as desired.
  • blower housing 52 and impeller 54 act similar to the carburetor of an engine to intimately and thoroughly mix the gas with a supply of intake air to form an air/gas mixture which is supplied to gas burner assembly of water heater 20 for combustion. Combustion of the gas/air mixture results in a cleaner combustion, which reduces nitrous oxide emissions over the higher emissions observed when gas is supplied directly to the burners for combustion, as in the burners of known water heaters.
  • This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

L'invention concerne un système d'alimentation en gaz (38) destiné à un appareil, tel qu'un chauffe-eau (20). Ce système comprend une vanne de régulation de gaz (40) et un ensemble logement de soufflante (50) montés sur le chauffe-eau, à proximité l'un de l'autre. L'ensemble logement de soufflante comprend un moteur (54) entraînant une roue (56) à l'intérieur du logement de soufflante (52), et un orifice de sortie (66) du logement de soufflante est relié à l'ensemble brûleur à gaz (24) du chauffe-eau. Un conduit d'alimentation en gaz (72) s'étend à partir de la vanne de régulation dans le logement de soufflante, et un orifice de sortie (76) du conduit d'alimentation est disposé à l'intérieur du logement de soufflante, à proximité de l'orifice d'entrée (62) dudit logement et de la partie centrale de la roue. En fonctionnement, la rotation de la roue attire un flux d'air à travers le logement de soufflante. Du gaz est acheminé simultanément à travers le conduit d'alimentation, vers l'intérieur du logement de soufflante, à proximité de la roue, et le gaz est mélangé avec le flux d'air pour former un mélange air-gaz acheminé ensuite par l'orifice de sortie (66) du logement de soufflante jusqu'à l'ensemble brûleur à gaz (24) pour la combustion. Le gaz est ainsi prémélangé avec de l'air à l'intérieur du logement de soufflante avant d'être acheminé vers l'ensemble brûleur à gaz, ce qui permet d'obtenir une combustion du mélange air-gaz plus propre et des émissions d'oxyde nitreux réduites.
PCT/US2005/004816 2004-02-17 2005-02-16 Systeme d'alimentation en gaz pourvu d'une soufflante de premelange WO2005080871A1 (fr)

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US54534004P 2004-02-17 2004-02-17
US60/545,340 2004-02-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2005880C2 (nl) * 2010-12-17 2012-06-19 Intergas Heating Assets B V Ventilator voor een warmwaterinrichting, een warmwaterinrichting omvattende een dergelijke ventilator en een werkwijze voor het mengen van een brandstof en een oxidator.

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7346274B2 (en) * 1999-07-27 2008-03-18 Bradenbaugh Kenneth A Water heater and method of controlling the same
US7824178B1 (en) * 2008-02-12 2010-11-02 Lochinvar Corporation Air transfer arm for boiler
CN101818746B (zh) 2009-02-27 2015-07-15 德昌电机(深圳)有限公司 预混式锅炉风机
NL2004137C2 (nl) * 2009-12-16 2011-06-20 Intergas Heating Assets B V Ventilatorhuis voor een ventilator voor het aanvoeren van een brandstof/oxidatormengsel aan een brander, inzetstuk en aanvoerinrichting daarvoor.
US20130220301A1 (en) * 2012-02-29 2013-08-29 Atul Saksena Gas burner system for gas-powered cooking devices
DE202012012538U1 (de) * 2012-08-03 2013-04-29 Ebm-Papst Landshut Gmbh Gebläsevorrichtung mit integriertem Krümmer
JP6534333B2 (ja) * 2015-10-19 2019-06-26 リンナイ株式会社 給湯器
DE102021105962A1 (de) * 2021-03-11 2022-09-15 Ebm-Papst Landshut Gmbh Heizvorrichtung aufweisend einen Gassensor und Verfahren zu deren Betrieb

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214629A (en) * 1988-01-27 1989-09-06 Burco Dean Appliances Ltd Gas burner assembly
DE4218754A1 (de) * 1992-06-06 1993-12-09 Froeling Kessel App Verfahren zur schadstoffarmen Verbrennung
JPH08128609A (ja) * 1994-10-31 1996-05-21 Miura Co Ltd 燃料ガス混合機構を備えた送風機
EP0762051A2 (fr) * 1993-12-06 1997-03-12 Papst-Motoren Gmbh & Co. Kg Ventilateur pour brûleur à prémélange opérant au gaz
EP0834695A1 (fr) * 1996-10-03 1998-04-08 Gianmario Invernizzi Dispositif pour l'alimentation en mélange air et gaz d'un brûleur, notamment pour appareils de chauffage
EP1083386A1 (fr) * 1999-09-09 2001-03-14 Giorgio Scanferla Assemblage de brûleurs et tête ascociée pour la combustion de mélanges gazeux
EP1443270A1 (fr) * 2003-01-27 2004-08-04 Vaillant GmbH Dispositif de mélange gaz/air, en particulier pour appareil de chauffage

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1431633A (en) * 1921-12-29 1922-10-10 Clements George Gas furnace and blowtorch
US1667074A (en) * 1927-05-07 1928-04-24 Knight Albert Breakenridge Charge-forming device
US1998784A (en) * 1931-05-08 1935-04-23 Bendix Res Corp Fuel supply means for internal combustion engines
US2001817A (en) * 1932-04-06 1935-05-21 Emil Freytag Atomizing device
US2033786A (en) * 1933-12-26 1936-03-10 American Tap Bush Company Tap and rod assembly
US2178278A (en) * 1938-08-15 1939-10-31 Norton Mcmuray Mfg Company Meter bar
US2250517A (en) * 1939-05-08 1941-07-29 John G Zolleis Coupling connection
US2402964A (en) * 1941-12-01 1946-07-02 Aerotransp Ab Device for supplying starting fuel
US2473699A (en) * 1944-06-20 1949-06-21 Selas Corp Of America Airplane heater having two-speed control
US2689145A (en) * 1949-10-22 1954-09-14 Crane Co Stuffing box construction
US3190277A (en) * 1962-12-03 1965-06-22 Marva Devices Inc Starting unit for internal combustion units
US3273549A (en) * 1963-11-18 1966-09-20 Deland Olivier Internal combustion engine carburetor having a fan
US3521669A (en) * 1968-03-08 1970-07-28 Turner Corp Fuel regulator for a propane appliance
US3936003A (en) * 1973-12-03 1976-02-03 Raytheon Company Multiport high density burner
US3967590A (en) * 1974-01-24 1976-07-06 Amana Refrigeration, Inc. Heat exchange control system
NL181601C (nl) * 1977-07-27 Stelrad Group Ltd Gasbrander voor constante vlamgrootte.
US4397631A (en) * 1980-09-08 1983-08-09 The Carlin Company Pre-mix forced draft power gas burner
US4465456A (en) * 1981-08-24 1984-08-14 Foster-Miller Inc. Variable firing rate burner
AU583674B2 (en) * 1985-10-25 1989-05-04 Rinnai Corporation Combustion heater
US4766883A (en) * 1986-02-26 1988-08-30 Mor-Flo Industries, Inc. Forced draft controlled mixture heating system using a closed combustion chamber
US4830600A (en) * 1988-01-19 1989-05-16 American Standard Inc. Premix furnace burner
CA2099894C (fr) * 1992-07-10 1998-11-03 Wayne C. Gensler Appareil et methode pour melanger les gaz
US5419363A (en) * 1994-07-25 1995-05-30 Henry M. Bissell Plumbing adapter
DE19538947C2 (de) * 1995-10-19 1998-11-26 Webasto Thermosysteme Gmbh Fahrzeugheizgerät
US5735686A (en) * 1996-09-11 1998-04-07 American Standard Inc. Combustion blower shaft leakage relief
US5934269A (en) * 1998-03-27 1999-08-10 Tru-Flex Metal Hose Corporation Flexible fuel tube assembly for gas-fired appliance and installation method
US6843244B2 (en) * 2000-09-15 2005-01-18 Vermont Castings Majestic Products Company Portable heater

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214629A (en) * 1988-01-27 1989-09-06 Burco Dean Appliances Ltd Gas burner assembly
DE4218754A1 (de) * 1992-06-06 1993-12-09 Froeling Kessel App Verfahren zur schadstoffarmen Verbrennung
EP0762051A2 (fr) * 1993-12-06 1997-03-12 Papst-Motoren Gmbh & Co. Kg Ventilateur pour brûleur à prémélange opérant au gaz
JPH08128609A (ja) * 1994-10-31 1996-05-21 Miura Co Ltd 燃料ガス混合機構を備えた送風機
EP0834695A1 (fr) * 1996-10-03 1998-04-08 Gianmario Invernizzi Dispositif pour l'alimentation en mélange air et gaz d'un brûleur, notamment pour appareils de chauffage
EP1083386A1 (fr) * 1999-09-09 2001-03-14 Giorgio Scanferla Assemblage de brûleurs et tête ascociée pour la combustion de mélanges gazeux
EP1443270A1 (fr) * 2003-01-27 2004-08-04 Vaillant GmbH Dispositif de mélange gaz/air, en particulier pour appareil de chauffage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 09 30 September 1996 (1996-09-30) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2005880C2 (nl) * 2010-12-17 2012-06-19 Intergas Heating Assets B V Ventilator voor een warmwaterinrichting, een warmwaterinrichting omvattende een dergelijke ventilator en een werkwijze voor het mengen van een brandstof en een oxidator.
WO2012081984A1 (fr) 2010-12-17 2012-06-21 Intergas Heating Assets B.V. Système d'alimentation de mélange destiné à un appareil à eau chaude, appareil à eau chaude comprenant un tel système d'alimentation de mélange et procédé de mélange d'un combustible et d'un oxydant
JP2014503781A (ja) * 2010-12-17 2014-02-13 インターガス・ヒーティング・アセッツ・ベスローテン・フェンノートシャップ 温水器具のための混合物供給システム、そのような混合物供給システムを含む温水器具、および燃料と酸化剤とを混合するための方法
US9395080B2 (en) 2010-12-17 2016-07-19 Intergas Heating Assets B.V. Mixture supply system for a hot water appliance, a hot water appliance comprising such a mixture supply system and a method for mixing a fuel and an oxidizer

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