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EP2927584A1 - Dispositif mélangeur intégrale de gaz combustible/aire pour un brûleur à gaz - Google Patents

Dispositif mélangeur intégrale de gaz combustible/aire pour un brûleur à gaz Download PDF

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Publication number
EP2927584A1
EP2927584A1 EP14163196.0A EP14163196A EP2927584A1 EP 2927584 A1 EP2927584 A1 EP 2927584A1 EP 14163196 A EP14163196 A EP 14163196A EP 2927584 A1 EP2927584 A1 EP 2927584A1
Authority
EP
European Patent Office
Prior art keywords
gas
air
section
mixing device
inlet section
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.)
Withdrawn
Application number
EP14163196.0A
Other languages
German (de)
English (en)
Inventor
Libor Kralicek
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.)
Garrett Motion SARL
Original Assignee
Honeywell Technologies SARL
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 Honeywell Technologies SARL filed Critical Honeywell Technologies SARL
Priority to EP14163196.0A priority Critical patent/EP2927584A1/fr
Publication of EP2927584A1 publication Critical patent/EP2927584A1/fr
Withdrawn legal-status Critical Current

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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
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • 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

Definitions

  • the present patent application relates to a gas/air mixing device for a gas burner.
  • the present patent application relates further to an assembly for a gas burner comprising such a gas/air mixing device.
  • the gas/air mixing device comprises a housing.
  • the housing provides a gas inlet section with a gas inlet opening for gas, an air inlet section with an air inlet opening for air, and a gas/air outlet section with an outlet opening for a gas/air mixture.
  • the housing of the gas/air mixing further comprises a control pipe section with a control pipe opening for accommodating at least one accessory element; wherein the gas inlet section opens into the control pipe section and the control pipe section opens to the air inlet section in such a way that an axis the gas flow through the control pipe section runs almost perpendicular to an axis of a gas flow though the gas inlet section and almost perpendicular to the axis of the air flow through the air inlet section; and wherein the gas inlet section, the air inlet section, the gas/air outlet section and the control pipe section are all integral parts of a monolithic housing.
  • control pipe section opens to the air inlet section through a main opening and through a bypass opening.
  • the bypass opening is initially closed and sealed by a break-out element and can be opened by breaking out said beak-out element when the bypass opening is used by an accessory element providing measuring and/or control functions.
  • the air inlet section accommodates a mixing unit for mixing gas and air, wherein the mixing unit is mounted within the air inlet section of the housing by at least one snap-fit connection element or bayonet connection element. This allows to provide easily a defined mixing characteristic for the gas/air mixing device.
  • the accessory element is mounted within the control pipe section of the housing by at least one snap-fit connection or bayonet connection element and preferably in addition by at least one anti-rotation element. This allows to easily expand the basic functionality of the gas/air mixing by a defined functionality of an accessory element.
  • the gas inlet section, the air inlet section, the gas/air outlet section and the control pipe section are all integral parts of a monolithic die cast housing. This provides a simply design with several functionalities being integrated in one part, namely in the housing of the gas/air mixing device.
  • a burner door for a gas burner and/or a fan housing for a fan are also an integral part of the monolithic housing. This allows an increase of the functions being provided by one part, namely by the housing of the gas/air mixing device.
  • the assembly for a gas burner comprising such a gas/air mixing device is defined in claim 13.
  • the present application relates to a gas/air mixing device for a gas burner.
  • the present application relates further to an assembly for a gas burner comprising such an gas/air mixing device.
  • Figure 1 shows a perspective view of an assembly 10 for a gas burner (not shown) comprising a gas/air mixing device 11, a gas control valve 12 connected with/mounted to said gas/air mixing device 11 and a fan 13 connected with/mounted to said gas/air mixing device 11.
  • Figure 2 shows a cross-section through said assembly 10.
  • the gas/air mixing device 11 comprises a housing 14.
  • the housing 14 comprising a gas inlet section 14a with a gas inlet opening 15 for gas, an air inlet section 14b with an air inlet opening 16 for air, and an gas/air outlet section 14c with an outlet opening 17 for a gas/air mixture.
  • the air inlet section 14b serves also as gar/air mixing section.
  • the gas control valve 12 is connected to the gas inlet section 14a of the housing 14 making use of a well-known quick connect system.
  • Figure 2 shows a mounting clip 18 of such a quick connect system.
  • Such quick connect system comprises an anti-rotation element to mount and keep the gas control valve 12 and the gas inlet section 14a in the right orientation.
  • This anti-rotation element is preferably provided by an inner hexagon shape of the gas inlet opening 15.
  • a sealing element 19 is positioned between an outlet section of the gas control valve 12 and the gas inlet section 14a of the housing 14 of the gas/air mixing device 11.
  • the fan 13 is connected to the gas/air outlet section 14c of the gas/air mixing device 11.
  • the fan 13 sucks in air through the air inlet opening 16 of the air inlet section 14b of the housing 14 depending on the fan speed.
  • the fan 13 further sucks in gas, whereby the gas amount sucked in by the fan 13 is adjusted by gas control valve 12.
  • the fan 13 is connected to the air inlet section 14b of the housing 14 of said gas/air mixing device 11.
  • the housing 14 of the gas/air mixing device 11 further comprises a control pipe section 14d with a control pipe opening 20 for receiving and accommodating an accessory element 21 a, 21 b.
  • Figures 8 and 9 show examples of such accessory elements, namely Figure 8 an accessory element designed as seal plug 21 a and Figure 9 an accessory element designed as gas type switch 21 b.
  • the shown accessory elements are of exemplary nature only. The invention is not limited to the shown accessory elements.
  • control pipe section 14d of the housing 14 of said gas/air mixing device 11 accommodates an accessory element designed as seal plug 21 a with a sealing element 22 being positioned between the control pipe section 14d and the seal plug 21 a.
  • the gas inlet section 14a of the housing opens into the control pipe section 14d of the housing 14, and the control pipe section 14d of the housing 14 opens into the air inlet section 14b of the housing 14.
  • the gas inlet section 14a, the air inlet section 14b, the gas/air outlet section 14c and the control pipe section 14d are all integral parts of a monolithic housing 14, preferably a monolithic die cast housing made from an aluminium alloy.
  • the housing 14 further provides burner door 14e for the gas burner and a fan housing part 14f for the fan 13 being also integral parts of the monolithic housing 14.
  • the assembly of Figure 1 , 2 is mountable to a gas burner though said burner door 14e.
  • the gas inlet section 14a of the housing 14 opens into the control pipe section 14d of the housing 14 though an internal opening 23.
  • the control pipe section 14d of the housing 14 opens into the air inlet section 14b of the housing 14 through an internal main opening 24 and through an internal bypass opening 25.
  • the main opening 24 is used to guide the gas flow from the control pipe section 14d into the air pipe section 14b thereby mixing the gas and the air.
  • the bypass opening 25 is used by advanced accessory elements having measuring and/or control functions.
  • the bypass opening 25 is initially closed and sealed by a break-out element 41 and can be opened by removing said beak-out element 41 when the bypass opening 25 is used by an accessory element providing measuring and/or control functions.
  • the air inlet section 14b of the housing 14 of said gas/air mixing device 11 accommodates a mixing unit 26 for mixing gas and air.
  • Figures 2 , 7 show a mixing unit 26 designed as a venturi nozzle.
  • venturi nozzle is of exemplary nature only.
  • the invention is not limited to such a mixing unit 26.
  • the mixing unit 26 is mounted within the air inlet section 14b of the housing 14 by at least one snap-fit connection element 27.
  • the mixing unit 26 uses four of such snap-fit connection elements 27.
  • the mixing unit 26 is insertable into the air inlet section 14b of the housing 14 in the direction of the arrow X (see Figure 7 ) through the ait inlet opening 16.
  • a shoulder 28 provided at an end of the mixing unit 26 opposite to the end at which the snap-fit connection elements 27 are provided has an outer diameter being larger than the inner diameter of the air inlet opening 16 of the air inlet section 14b accommodating the mixing unit 26.
  • Said shoulder 28 thereby provides a stop element limiting the insertion depth of the mixing unit 26 into the air inlet section 14b of the housing 14.
  • two sealing elements 30, 31 are positioned between the mixing unit 26 and the air inlet section 14b of the housing 14, a first sealing element 30 in the region of the end at which the snap-fit connection elements 27 are provided and a second sealing element 31 in the region of the end at which the shoulder 28 is provided.
  • the second sealing element 31 is positioned in a region of the housing 14 in which the control pipe section 14d opens into the air inlet section 14b, namely adjacent to a wall section 32 which separates the main opening 24 from the bypass opening 25.
  • the sealing elements 30, 31 are provided by O-rings.
  • the sealing elements 30, 31 can be provided by sealing blades provided by integral protrusions of the mixing unit 26 which project into corresponding recesses of the housing 14.
  • the control pipe section 14d accommodates at least one accessory element providing a seal plug function and/or a gas type switch function and/or a measuring function and/or control function like a gas adaptive control function.
  • An accessory element can provide one or more of said functions.
  • Figure 8 shows a seal plug 21 a and Figure 9 shows a gas type switch 21 b.
  • the respective accessory element 21 a, 21 b is mounted within the control pipe section 14d of the housing 14 by at least one snap-fit connection element 33 or bayonet connection element and preferably by at least one anti-rotation element 34 both provided at the same end of the accessory element 21 a, 21 b and control pipe section 14d.
  • Figure 10 an embodiment for a snap-fit connection element 33 and a separate anti-rotation element 34 is shown.
  • the anti-rotation element 34 of Figure 10 is provided by at least one protrusion 35 of the respective accessory element 21 a, 21 b engaging a respective recess 36 within the control pipe section 14d of the housing 14.
  • Figures 11 and 12 each show an alternative snap-fit connection element 33 having an integrated anti-rotation element 34.
  • an axis 37 of an air flow through the air inlet section 14b and an axis 38 of a gas/air mixture flow through the gas/air outlet section 14c fall together.
  • An axis 40 the gas flow through the control pipe section 14d runs perpendicular to an axis 39 of the gas flow though the gas inlet section 14a and perpendicular to the axis 37 of the air flow through the air inlet section 14b.
  • an axis 39 of a gas flow though the gas inlet section 14a runs parallel to the axis 37 of the air flow through the air inlet section 14b.
  • the axis 39 of a gas flow though the gas inlet section 14a runs perpendicular to the axis 37 of the air flow through the air inlet section 14b.
  • the axis 39 of a gas flow though the gas inlet section and the axis 37 of the air flow through the air inlet section 14b can in the projection of the same confine any angle.
  • the axis 37 of the air flow through the air inlet section 14b and the axis 38 of the gas/air mixture flow through the gas/air outlet section 14c lie in a common, first horizontal plane.
  • the axis 39 of the gas flow though the gas inlet section 14b lies in a second horizontal plane running parallel to the first horizontal plane, wherein the axis 40 of the gas flow through the control pipe section 14d lies in a third plane running perpendicular to the first plane and the second plane.
  • the axis 39 of a gas flow though the gas inlet section 14a lies in a second plane running perpendicular to the first plane, wherein the axis 40 of the gas flow through the control pipe section 14d lies in a third plane running parallel to the first plane and perpendicular to the second plane.

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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)
EP14163196.0A 2014-04-02 2014-04-02 Dispositif mélangeur intégrale de gaz combustible/aire pour un brûleur à gaz Withdrawn EP2927584A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14163196.0A EP2927584A1 (fr) 2014-04-02 2014-04-02 Dispositif mélangeur intégrale de gaz combustible/aire pour un brûleur à gaz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14163196.0A EP2927584A1 (fr) 2014-04-02 2014-04-02 Dispositif mélangeur intégrale de gaz combustible/aire pour un brûleur à gaz

Publications (1)

Publication Number Publication Date
EP2927584A1 true EP2927584A1 (fr) 2015-10-07

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Family Applications (1)

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EP14163196.0A Withdrawn EP2927584A1 (fr) 2014-04-02 2014-04-02 Dispositif mélangeur intégrale de gaz combustible/aire pour un brûleur à gaz

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EP (1) EP2927584A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3064778A1 (fr) * 2015-03-06 2016-09-07 ELICA S.p.A. Ventilateur radial avec dispositif de mélange air-gaz
EP3015767B1 (fr) * 2014-10-29 2019-03-06 Honeywell Technologies Sarl Ensemble comprenant une soupape de gaz et un mélangeur gaz/air
EP3722670A1 (fr) * 2019-04-09 2020-10-14 ebm-papst Landshut GmbH Dispositif adaptateur conçu pour être fixé à demeure sur une ouverture d'aspiration d'une soufflante à gaz
EP3739216A1 (fr) * 2019-05-14 2020-11-18 ebm-papst Landshut GmbH Dispositif d'entrée pour une soufflerie à gaz
EP3913284A1 (fr) 2020-05-19 2021-11-24 Pittway Sarl Dispositif de mélange gaz/air destiné à un brûleur à gaz

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29617621U1 (de) 1995-11-14 1997-08-28 Honeywell B.V., Amsterdam Mischvorrichtung mit Venturi-Düse
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
JP2011185575A (ja) * 2010-03-10 2011-09-22 Rinnai Corp バーナ用混合器
WO2012006166A2 (fr) * 2010-06-29 2012-01-12 A.O. Smith Corporation Ensemble soufflante destiné à être utilisé avec un appareil alimenté au gaz

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29617621U1 (de) 1995-11-14 1997-08-28 Honeywell B.V., Amsterdam Mischvorrichtung mit Venturi-Düse
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
JP2011185575A (ja) * 2010-03-10 2011-09-22 Rinnai Corp バーナ用混合器
WO2012006166A2 (fr) * 2010-06-29 2012-01-12 A.O. Smith Corporation Ensemble soufflante destiné à être utilisé avec un appareil alimenté au gaz

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3015767B1 (fr) * 2014-10-29 2019-03-06 Honeywell Technologies Sarl Ensemble comprenant une soupape de gaz et un mélangeur gaz/air
EP3064778A1 (fr) * 2015-03-06 2016-09-07 ELICA S.p.A. Ventilateur radial avec dispositif de mélange air-gaz
EP3722670A1 (fr) * 2019-04-09 2020-10-14 ebm-papst Landshut GmbH Dispositif adaptateur conçu pour être fixé à demeure sur une ouverture d'aspiration d'une soufflante à gaz
EP3739216A1 (fr) * 2019-05-14 2020-11-18 ebm-papst Landshut GmbH Dispositif d'entrée pour une soufflerie à gaz
DE102019112645A1 (de) * 2019-05-14 2020-11-19 Ebm-Papst Landshut Gmbh Einströmvorrichtung für ein Gasgebläse
EP3913284A1 (fr) 2020-05-19 2021-11-24 Pittway Sarl Dispositif de mélange gaz/air destiné à un brûleur à gaz
US11708972B2 (en) 2020-05-19 2023-07-25 Pittway Sarl Gas/air mixing device of a gas burner

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