EP0559280A1 - Gasdosiervorrichtung - Google Patents

Gasdosiervorrichtung Download PDF

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Publication number
EP0559280A1
EP0559280A1 EP93200557A EP93200557A EP0559280A1 EP 0559280 A1 EP0559280 A1 EP 0559280A1 EP 93200557 A EP93200557 A EP 93200557A EP 93200557 A EP93200557 A EP 93200557A EP 0559280 A1 EP0559280 A1 EP 0559280A1
Authority
EP
European Patent Office
Prior art keywords
gas
duct
flow
valve element
mixing
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
EP93200557A
Other languages
English (en)
French (fr)
Other versions
EP0559280B1 (de
Inventor
Herman Josef Woltering
Ralf Woltering
Frank Woltering
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.)
ATAG VERWARMING B.V.
Original Assignee
ATAG VERWARMING BV
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 ATAG VERWARMING BV filed Critical ATAG VERWARMING BV
Publication of EP0559280A1 publication Critical patent/EP0559280A1/de
Application granted granted Critical
Publication of EP0559280B1 publication Critical patent/EP0559280B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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, e.g. noise reduction means
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/027—Regulating fuel supply conjointly with air supply using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/36—Spark ignition, e.g. by means of a high voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/02—Ventilators in stacks
    • F23N2233/04—Ventilators in stacks with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays

Definitions

  • the invention relates to a gas dosing device comprising a flow duct which is connected to a flow generating device such as a fan and has an inlet end for a main gas flow and a mixing gas dosing unit for supplying a mixing gas in doses to the main gas.
  • Such a gas dosing device is generally known and is for instance used for adding flammable gas such as natural gas to air for combustion in the burner of a heating device.
  • the mixing gas dosing unit is herein formed for instance by a gas sprayer connected to a gas feed pipe in which the flammable gas is supplied under a determined pressure. In this way an accurate mixing ratio of the main gas and the mixing gas can be adjusted.
  • the invention now has for its object to provide a gas dosing device of the type specified in the preamble with which in simple and economic manner a gas mixture can be obtained with a precisely constant mixing ratio at considerably varying flow rates.
  • the main gas valve element will assume a position in the diverging flow duct which depends on the quantity of gas which flows through the flow duct as a result of the action of the flow generating device. As more gas flows through the duct, the main gas valve element will position itself in a wider portion of the flow duct. The position of the main gas valve element is thus a measure of the quantity of gas that has flown through and the mixing gas dosing unit accordingly delivers a quantity of mixing gas adapted to the through-flowing quantity of gas. An optimum mix ratio is thus obtained within very wide limits of the through-flowing quantity of main gas.
  • a very simple device is obtained with the characteristic of claim 2.
  • the main gas valve element assumes a position in a wider portion of the main gas duct, wherein the mixing gas valve element is thus positioned simultaneously in a wider portion of the mixing gas duct, whereby a proportionally larger amount of mixing gas can flow in.
  • the step of claim 3 achieves that no transmissions, seals and the like requiring frequent maintenance are necessary.
  • the mixing gas valve/main gas valve element can hereby float freely. This element forms the only moving part of the gas dosing device.
  • the invention likewise relates to and provides a heating device comprising means which define a flow duct which is connected to a fan and has successively in flow direction at least one gas dosing device according to any of the claims 1 to 5, a burner and a heat exchanger through which a heat transfer medium can flow, wherein the inlet end of the gas dosing device is connected to the atmosphere and the mixing gas feed pipe is connected to a source of flammable gas.
  • This heating device can operate at a lower or higher capacity according to the conditions, wherein a high efficiency is achieved at all settings. At the same time this heating device is economic of manufacture.
  • the invention is further elucidated in the following description with reference to the use of a gas dosing device according to the invention in a heating device.
  • Fig. 1 shows schematically a heating device according to the invention.
  • Fig. 2 shows in cross-sectional perspective view on a larger scale the gas dosing device of the heating device according to the invention.
  • the device 1 shown in fig. 1 is a so-called high-yield boiler in which a flow duct 2 is defined in which a gas transport can be effected by a fan 6 accommodated therein. Situated successively in the flow duct 2 in the flow direction are a gas dosing device 3, a burner 4, which in this embodiment is of the fully pre-mixed type, a heat exchanger 5 and the above mentioned fan 6. The latter discharges the supplied combustion gas to the flue uptake 7. It is noted that in another embodiment the fan 6 may also be accommodated in the flow duct in advance of the burner 4. The fan is not then exposed to higher temperatures and condensate.
  • Heat exchanger 5 is connected to a heating water feed pipe 11 and a heating water discharge pipe 12 which are connected in known manner to radiators and convectors in order to deliver the heat supplied to the heating water in heat exchanger 5 to the desired locations.
  • the air drawn in by the action of the fan 6 is mixed with gas from a gas feed pipe 8 in a predetermined desired mix ratio, wherein an optimum combustion takes place.
  • an electrical gas valve 9 which can open and close the gas feed.
  • a reducing valve 10 which holds the gas pressure in gas feed pipe 8 at a constant value.
  • Control device 15 is controlled by a control device 15, here shown schematically, of which only a few connecting lines are shown.
  • Control device 15 is connected to a flow sensor 16, an ignition 19, the above mentioned electrical gas valve 9 and the fan 6.
  • Flow sensor 16 can be a pressure difference sensor which responds to a pressure difference between the lines 17 and 18. These lines 17 and 18 are connected to the flow duct 2 on different sides of the burner and heat exchanger assembly.
  • a pressure difference will occur over burner 4 and heat exchanger 5 and therefore a pressure difference between lines 17 and 18.
  • This pressure difference is detected by sensor 16 and this sensor generates a relevant output signal to control device 15.
  • the latter will then actuate the gas valve 9 and the ignition 19 so that gas is added to the air flow and the air/gas mixture is ignited on the surface of burner 19.
  • the hot combustion gases flow through the heat exchanger 5 and the heat is transferred in known manner to the heating water therein.
  • the cooled combustion gases are carried by fan 6 to the flue uptake 7.
  • control device 15 If detectors (not shown) indicate to the control device 15 that for instance only a small quantity of heat must be generated, control device 15 will cause the fan 6 to operate at a low speed. When conversely much heat is required, the fan 6 will be switched to high speed. In these extreme situations and the situations therebetween a constant mix ratio of the air and the gas must always be obtained in the air mixer 3.
  • Gas dosing device 3 comprises a housing 24 in which is formed a diverging duct 25.
  • This diverging duct 25 connects at its broad end to, and forms part of, flow duct 2.
  • At the narrow end duct 25 connects onto an air feed opening 26 freely connected to the atmosphere.
  • Accommodated in the diverging duct 25 is an air valve element 27 extending transversely of the duct.
  • This air valve element 27 is movable coaxially of duct 25, that is, vertically as seen in fig. 2.
  • a rod-like gas valve element 28 which protrudes into a likewise diverging duct 30 in a gas regulator housing 29 fixedly connected to the housing 24 of the gas dosing device.
  • the gas feed pipe 8 is connected to the narrow end of diverging duct 30.
  • the gas dosing device 3 shown in fig. 2 operates as follows.
  • the amount of gas flowing through the gap between the bottom end of gas valve element 28 and the wall of the diverging gas duct 30 is dependent on the width thereof, and consequently dependent on the vertical position of the gas valve element 28.
  • the gas dosing device is of exceptionally simple construction, having only one moving element which, in the situation of use, can moreover assume a suitable position in free floating and thus unobstructed manner.
  • the described gas dosing device can therefore be manufactured economically and will function reliably for a long period.
  • the dimensioning of the conicities of air duct 25 and gas duct 30 can be determined with tests and depends to a certain extent on the further embodying of the heating device.
  • the control range of the gas dosing device must of course be adapted to the desired control range of the heating device.
  • a setting of the desired mix ratio can be obtained by adjusting the reducing valve 10.
  • the device shown in the figures relates to a preferred embodiment and the invention is not limited to this embodiment. It is not for instance necessary to dispose the gas dosing device vertically, as it can be placed horizontally or in another position, wherein however it may then perhaps be necessary to arrange a spring to urge the air valve with bias in the direction towards the narrow end of the diverging duct 25.
  • a direct connection of the air valve element 27 to the gas valve element 28 is also a favourable step, although an indirect connection can also be used.
  • the gas dosing device according to the invention lends itself particularly well for use in a heating device, it is not limited thereto.
  • the invention is applicable in all conditions wherein a mixing gas has to be added in a fixed ratio to a main gas, while the flow rate of the main gas flow varies greatly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)
  • Regulation And Control Of Combustion (AREA)
EP93200557A 1992-03-06 1993-02-26 Gasdosiervorrichtung Expired - Lifetime EP0559280B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9200426 1992-03-06
NL9200426A NL9200426A (nl) 1992-03-06 1992-03-06 Gasdoseerinrichting.

Publications (2)

Publication Number Publication Date
EP0559280A1 true EP0559280A1 (de) 1993-09-08
EP0559280B1 EP0559280B1 (de) 1997-12-03

Family

ID=19860530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93200557A Expired - Lifetime EP0559280B1 (de) 1992-03-06 1993-02-26 Gasdosiervorrichtung

Country Status (4)

Country Link
EP (1) EP0559280B1 (de)
AT (1) ATE160855T1 (de)
DE (1) DE69315459T2 (de)
NL (1) NL9200426A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0702194A1 (de) * 1994-09-07 1996-03-20 Honeywell B.V. Kombiniertes Gas/Luft-Ventil für Brenner
DE19729047C1 (de) * 1997-07-08 1998-09-24 Honeywell Bv Mischvorrichtung zur Erzeugung eines Gemisches aus Gas und Verbrennungsluft für einen Brenner
WO2008058640A1 (en) * 2006-11-14 2008-05-22 Sit La Precisa S.P.A. Method for controlling the delivery of a combustible air-gas mixture to a burner device
WO2009133451A3 (en) * 2008-04-30 2010-04-22 Gas Point S.R.L. Premix gas burner
EP2442028A1 (de) 2010-10-12 2012-04-18 Riello S.p.A. Vorrichtung zum zuführen eines Luft-Gas-Gemisches
CN102734797A (zh) * 2011-04-15 2012-10-17 应哲林 家用强鼓全预混节能燃烧装置
WO2013060997A3 (fr) * 2011-10-26 2013-10-24 Gdf Suez Dispositif de régulation d'un mélange gazeux
EP2735793A3 (de) * 2012-11-26 2018-01-10 Vaillant GmbH Brenngas-Luft-Mischvorrichtung
DE102017216961A1 (de) * 2017-09-25 2019-03-28 Robert Bosch Gmbh Mischeinrichtung für Heizgeräte sowie Heizgeräte mit einer solchen Mischeinrichtung
JP2019086247A (ja) * 2017-11-08 2019-06-06 リンナイ株式会社 予混合装置
IT201800003488A1 (it) * 2018-03-13 2019-09-13 Bertelli & Partners Srl Dispositivo di controllo di una miscela comburente-combustibile per bruciatori a gas premiscelati
EP4056897A1 (de) * 2021-03-10 2022-09-14 BDR Thermea Group B.V. Mischvorrichtung für eine gasheizung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969044C (de) * 1951-09-18 1958-04-24 Martha Emma Spaleck Geb Maecke Einrichtung zum Regeln des Druckes eines aus geregelten Teilstroemen gebildeten Gas-Luft-Gemisches
DE3625402A1 (de) * 1986-07-26 1988-02-04 Kromschroeder Ag G Vorrichtung zur regelung des gas-luft-gemisches bei einem gasbeheizten kessel
EP0316454A1 (de) * 1987-05-28 1989-05-24 Eiken Kougyo Kabushiki Kaisha Gas/luft-verhältnis-kontrollventil für gasbrenner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969044C (de) * 1951-09-18 1958-04-24 Martha Emma Spaleck Geb Maecke Einrichtung zum Regeln des Druckes eines aus geregelten Teilstroemen gebildeten Gas-Luft-Gemisches
DE3625402A1 (de) * 1986-07-26 1988-02-04 Kromschroeder Ag G Vorrichtung zur regelung des gas-luft-gemisches bei einem gasbeheizten kessel
EP0316454A1 (de) * 1987-05-28 1989-05-24 Eiken Kougyo Kabushiki Kaisha Gas/luft-verhältnis-kontrollventil für gasbrenner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 49 (M-927)(3992) 29 January 1990 & JP-A-01 277 122 ( MATSUSHITA ) 7 November 1989 *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0702194A1 (de) * 1994-09-07 1996-03-20 Honeywell B.V. Kombiniertes Gas/Luft-Ventil für Brenner
DE19729047C1 (de) * 1997-07-08 1998-09-24 Honeywell Bv Mischvorrichtung zur Erzeugung eines Gemisches aus Gas und Verbrennungsluft für einen Brenner
EP0890787A2 (de) 1997-07-08 1999-01-13 Honeywell B.V. Mischvorrichtung für Gas- und Verbrennungsluft in einer Brenneranlage
EP0890787A3 (de) * 1997-07-08 1999-02-10 Honeywell B.V. Mischvorrichtung für Gas- und Verbrennungsluft in einer Brenneranlage
WO2008058640A1 (en) * 2006-11-14 2008-05-22 Sit La Precisa S.P.A. Method for controlling the delivery of a combustible air-gas mixture to a burner device
US9097419B2 (en) 2008-04-30 2015-08-04 Gas Point S.R.L. Premix gas burner
WO2009133451A3 (en) * 2008-04-30 2010-04-22 Gas Point S.R.L. Premix gas burner
EP2442028A1 (de) 2010-10-12 2012-04-18 Riello S.p.A. Vorrichtung zum zuführen eines Luft-Gas-Gemisches
CN102734797A (zh) * 2011-04-15 2012-10-17 应哲林 家用强鼓全预混节能燃烧装置
CN102734797B (zh) * 2011-04-15 2016-08-03 浙江美大实业股份有限公司 家用强鼓全预混节能燃烧装置
WO2013060997A3 (fr) * 2011-10-26 2013-10-24 Gdf Suez Dispositif de régulation d'un mélange gazeux
JP2014534406A (ja) * 2011-10-26 2014-12-18 ジェデエフ スエズ ガス混合気を調整するための装置
EP2735793A3 (de) * 2012-11-26 2018-01-10 Vaillant GmbH Brenngas-Luft-Mischvorrichtung
DE102017216961A1 (de) * 2017-09-25 2019-03-28 Robert Bosch Gmbh Mischeinrichtung für Heizgeräte sowie Heizgeräte mit einer solchen Mischeinrichtung
JP2019086247A (ja) * 2017-11-08 2019-06-06 リンナイ株式会社 予混合装置
IT201800003488A1 (it) * 2018-03-13 2019-09-13 Bertelli & Partners Srl Dispositivo di controllo di una miscela comburente-combustibile per bruciatori a gas premiscelati
EP3540311A1 (de) * 2018-03-13 2019-09-18 Bertelli & Partners S.r.l. Vorrichtung zur steuerung eines brennstoff-oxidationsmittelgemisches für vormischgasbrenner
CN110275561A (zh) * 2018-03-13 2019-09-24 贝尔泰利联合公司 用于控制预混合燃气燃烧器的燃料-氧化剂混合物的设备
US10900663B2 (en) 2018-03-13 2021-01-26 Bertelli & Partners S.R.L. Device for controlling a fuel-oxidizer mixture for premix gas burners
CN110275561B (zh) * 2018-03-13 2022-10-28 贝尔泰利联合公司 用于控制预混合燃气燃烧器的燃料-氧化剂混合物的设备
EP4056897A1 (de) * 2021-03-10 2022-09-14 BDR Thermea Group B.V. Mischvorrichtung für eine gasheizung
WO2022189413A1 (en) * 2021-03-10 2022-09-15 Bdr Thermea Group B.V. Mixing device for a gas heater

Also Published As

Publication number Publication date
EP0559280B1 (de) 1997-12-03
DE69315459D1 (de) 1998-01-15
ATE160855T1 (de) 1997-12-15
NL9200426A (nl) 1993-10-01
DE69315459T2 (de) 1998-03-26

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