EP0062854B1 - Dispositif de chauffage à gaz pour eau ou air - Google Patents

Dispositif de chauffage à gaz pour eau ou air Download PDF

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Publication number
EP0062854B1
EP0062854B1 EP82102802A EP82102802A EP0062854B1 EP 0062854 B1 EP0062854 B1 EP 0062854B1 EP 82102802 A EP82102802 A EP 82102802A EP 82102802 A EP82102802 A EP 82102802A EP 0062854 B1 EP0062854 B1 EP 0062854B1
Authority
EP
European Patent Office
Prior art keywords
air
control valve
gas
burner
outlet
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
Application number
EP82102802A
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German (de)
English (en)
Other versions
EP0062854A1 (fr
Inventor
Hendrikus Berkhof
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.)
Honeywell BV
Original Assignee
Honeywell BV
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Filing date
Publication date
Application filed by Honeywell BV filed Critical Honeywell BV
Publication of EP0062854A1 publication Critical patent/EP0062854A1/fr
Application granted granted Critical
Publication of EP0062854B1 publication Critical patent/EP0062854B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/04—Regulating fuel supply conjointly with air supply and with draught
    • F23N1/047—Regulating fuel supply conjointly with air supply and with draught using mechanical means

Definitions

  • the invention relates to a gas-fired water or air heater with a control device that controls both the gas supply to the burner and the combustion air supply.
  • a control device that controls both the gas supply to the burner and the combustion air supply.
  • the gas supply to the burner is controlled by a gas control valve controlled by a temperature sensor.
  • a spring-loaded diaphragm actuator which controls an air flap in the combustion air supply duct, is connected to the outlet line of the control valve.
  • gas pressure supplied to the burner serves as a guide variable for the amount of air to be supplied
  • a device for controlling the supply of gas and air to an infrared burner is known from DE-A-15 29 154, in which the amount of air is regulated and depending on the heat requirement Pressure in the air supply line is used as a reference variable for an actuator in the gas supply line.
  • the invention is based on a gas-fired water or air heater described only in the older EP-A-36 613 to be taken into account with regard to Art. 54 (3), in which the output signal of a servo pressure regulator controlled by a temperature sensor simultaneously drives both the gas control valve and the drive of the air quantity actuator is supplied.
  • the fuel requirement can be reduced further in that the exhaust gases leave the water or air heater at the lowest possible temperature and thus carry as little heat as possible.
  • two-stage heaters have been developed in which the second heat exchanger, which is directly heated by the burner, is followed by a second, so-called condensation heat exchanger, in which the hot exhaust gases give off their heat of condensation to the medium to be heated.
  • FR-A-23 56 882 describes a device for keeping the efficiency of burners with forced extraction of the flue gases constant, which is primarily based on the task of adapting the amount of air supplied to the combustion chamber to the amount of gas supplied to the burner without reducing the amount of gas Blower to change airflow generated. This is done in that a bypass line is provided parallel to the air line leading to the combustion chamber and the air passage cross section in the bypass channel is increased by throttle valves in each case to the same extent as the air supply to the combustion chamber is reduced by means of a throttle valve and vice versa. In this way, the desired adaptation of the amount of air flowing to the combustion chamber to the amount of gas supplied to the burner is achieved with a constant total amount of air conveyed in the supply air duct.
  • the US-A-16 04 271 shows a combustion chamber with pulverized coal firing, in which a line branches off between the fan and the air volume control flap, which opens into an injector nozzle provided in the exhaust gas line in order to increase the draft in the flue gas outlet. Simultaneous control of the fuel supply and air supply in order to achieve optimal combustion is not provided here.
  • the closing body 1 of the main gas valve is spring-loaded in the closing direction by a closing spring 2 and is lifted off the seat by a diaphragm drive as soon as the force exerted by the control pressure in the chamber 3 on the diaphragm, that of the outlet pressure in the outlet 5 on the opposite side of the diaphragm 4 acting force plus the force of the spring 2 exceeds.
  • the drive chamber 3 receives its control pressure via a channel 6 and a solenoid valve from the output chamber of a servo pressure regulator 7, which is controlled by a temperature sensor 8.
  • a safety valve not shown, is switched on, which can be opened by means of a pushbutton 10 and is kept open by a thermoelectric ignition safety device 11, as long as the thermocouple 13 assigned to the pilot burner 12 is heated by the pilot flame.
  • the outlet 5 of the gas control valve is connected to the servo pressure regulator 7 via a channel 14.
  • the servo pressure regulator 7 If the outlet pressure in the outlet 5 decreases, the servo pressure regulator 7 generates an increased control pressure in the line 6 and in the drive chamber 3, so that the main gas valve 1 is opened further and the outlet pressure rises again.
  • the passage of the main gas valve 1 is also increased when the temperature measured by the temperature sensor 8, for example the water temperature at the outlet 15 of the heat exchanger 16, falls below its setpoint.
  • the servo pressure regulator 7 is also connected to the drive chamber 21 of a servo pressure-controlled air control valve, the closing body 22 of which is in turn biased in the closing direction by a spring 23 and is actuated by a membrane 24.
  • the inlet 25 of the air control valve is connected to a compressed air generator in the form of a fan 26, while the sensor 28 of a flow switch 29 is arranged in the outlet 27. Its make contact, which closes due to the air flow, lies in the excitation circuit of the switch-on solenoid valve in the servo pressure regulator 7. This therefore simultaneously controls the gas quantity flowing through the gas control valve 1 and the air quantity leaving the air control valve 22.
  • the heat exchanger 16 and the main burner 30 are surrounded by a closed housing 31.
  • the combustion gases leave the housing 31 through a vent 32.
  • the inlet 33 of the main burner 30 is opposed by an injector nozzle 34, via which gas flows into the main burner from the outlet 5 of the gas control valve. Due to the jet effect of the nozzle 34, the gas flow simultaneously draws in primary air, which is fed to the main burner 30 as combustion air.
  • the housing 31 has an inlet 35 for secondary air, which is opposed by a further injector nozzle 36. It is supplied with compressed air by the air control valve 22 and, due to its jet effect, also draws in additional combustion air and presses it into the interior of the housing 31. There it is available to the main burner 30 to achieve the most complete possible combustion. Otherwise, the housing 31 is closed. With the help of a throttle 37, the amount of air supplied to the air nozzle 36 can be adjusted in order to achieve an optimal gas / air mixture.
  • an air outlet nozzle 42 is arranged in the upper part 41 of the belly gas outlet 32, 41 located downstream of a train interruption 40 and is connected via a compressed air supply line 43 to the compressed air source consisting of blower 26 and air control valve 22.
  • the connection to the outlet 27 of the air control valve is made.
  • the air flow producing the artificial draft from the nozzle 42 is continuously adapted to the amount of air supplied to the burner.
  • FIG. 2 differs from that of FIG. 1 essentially in that the servo pressure regulator 7 is not placed on the housing of the main gas valve, but on that of the air control valve.
  • this embodiment works in the same way as described above. It is advantageous that the servo pressure regulator does not work with gas but with air and consequently no gas can escape in the event of any leaks. It can therefore be made from less demanding materials such as plastic.
  • the blower 26 only needs to deliver a relatively small amount of air, the use of a servo-controlled air control valve at the same time regulating any fluctuations in the supply pressure supplied by the blower.
  • the connecting line 43 is directly connected to the blower 26.
  • a throttle valve 47 is provided between the blower as the air source and the air outlet nozzle 42 in the flue gas discharge 41, the drive 48 of which is controlled by a temperature sensor 49 or 49 '. This measures the exhaust gas temperature in the flue gas outlet 41. The lower this temperature, the more the throttle valve 47 is opened and the additional air quantity serving to improve the train is thus increased.
  • the drive can take place as shown via an expansion temperature sensor 49 and a membrane capsule 48 or through a bimetal or in another way.

Landscapes

  • 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)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Claims (7)

1. Dispositif de chauffage de gaz pour eau ou air avec un dispositif de régulation gouvernant l'admission d'air de combustion et de gaz et les caractéristiques suivantes :
a) une soupape de régulation de gaz (1-5) gouverne l'admission de gaz de chauffage ;
b) une soupape de régulation d'air (21-25) gouverne en concommittance avec l'admission de gaz, l'admission de l'air de combustion ;
c) un régulateur de pression d'asservissement (7) égalise la pression à la sortie (5 ou 27) de la soupape de régulation de gaz (1-5) et de la soupape de régulation d'air (21-25) respectivement, avec une valeur nominale déterminée par un capteur de température (8) et gouverne au moyen de sa pression de sortie non seulement la commande (2-4) de la soupape de régulation de gaz mais encore la commande (23, 24) de la soupape de régulation d'air ;
d) la sortie (5) de la soupape de régulation de gaz est connectée à une buse d'injection (34) disposée en face du brûleur (30), et qui aspire également l'air primaire pour le brûleur ;
e) le brûleur (30) et une surface échangeuse de chaleur (16) qu'il chauffe sont entourés par l'enceinte fermée (31), qui présente une admission d'air secondaire (35) ainsi qu'un échappement des gaz brûlés (32-41) ;
f) à l'une des deux buses d'injection (36) aspirant l'air secondaire en fonctionnement et disposée en face de l'admission d'air secondaire (35) est raccordée à la sortie (27) de la soupape de régulation d'air (21-25) ; et

caractérisé en ce que :
g) dans l'échappement des gaz brûlés (32-41) du dispositif de chauffage (31) est disposée une buse d'échappement d'air (42) fournissant un tirage artificiel approprié ;
h) dans la conduite de raccordement (43) à la buse d'échappement d'air (42) est prévu un clapet réglable (45-47), et
i) la conduite de raccordement (43-44) est raccordée latéralement avec l'entrée (25) ou la sortie (27) de la soupape de régulation d'air (21-25).
2. Dispositif de chauffage selon la revendication 1 avec une interruption de tirage (40) dans l'échappement des gaz brûlés (41), caractérisé en ce que la buse d'échappement d'air (42) est disposée en aval de l'interruption de tirage (40).
3. Dispositif de chauffage selon la revendication 1 ou 2, caractérisé en ce que la sortie de raccordement (43') à la buse d'échappement d'air (42) est disposée au moins en partie à l'intérieur du boîtier (31) du dispositif de chauffage.
4. Dispositif de chauffage selon l'une des revendications 1 à 3, caractérisé en ce que le clapet est conformé en soupape de clapet gouvernable (47) et sa commande (48) est connectée à un capteur de température (49-49') mesurant la température des gaz brûlés.
5. Dispositif de chauffage selon l'une des revendications 1 à 4, caractérisé en ce que la buse d'injection (36) est intercalée en aval d'un clapet réglable (37).
6. Dispositif de chauffage selon l'une des revendications 1 à 5, dans lequel les éléments de régulation de la soupape de régulation de gaz (1) et de la soupape de régulation d'air (22) sont réglables chacun au moyen d'une commande de membrane (4-24), par rapport au siège de soupape correspondant, caractérisé en ce que le régulateur de pression d'asservissement (10) est monté sur le boîtier de la soupape de régulation des gaz (1-6) et l'enceinte de membrane (21) de la soupape de régulation d'air (21-24) est connectée par une conduite de pression de commande (20) au régulateur de pression d'asservissement (7) (figure 1).
7. Dispositif de chauffage selon l'une des revendications 1 à 5, dans lequel les éléments de réglage de la soupape de régulation de gaz (1) et de la soupape de régulation d'air (22) sont réglables chacun au moyen d'une commande de membrane (4, 24) par rapport au siège de soupape correspondant, caractérisé en ce que le régulateur de pression d'asservissement (7) est monté sur le boîtier de la soupape de régulation d'air (21-24) et l'enceinte de membrane (3) de la soupape de régulation de gaz (1-6) est raccordée par une conduite de pression de commande (20) au régulateur de pression d'asservissement (7) (figure 2).
EP82102802A 1981-04-13 1982-04-02 Dispositif de chauffage à gaz pour eau ou air Expired EP0062854B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3114866 1981-04-13
DE19813114866 DE3114866A1 (de) 1981-04-13 1981-04-13 Gasbefeuerter wasser- oder lufterhitzer

Publications (2)

Publication Number Publication Date
EP0062854A1 EP0062854A1 (fr) 1982-10-20
EP0062854B1 true EP0062854B1 (fr) 1984-07-04

Family

ID=6130041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102802A Expired EP0062854B1 (fr) 1981-04-13 1982-04-02 Dispositif de chauffage à gaz pour eau ou air

Country Status (4)

Country Link
EP (1) EP0062854B1 (fr)
JP (1) JPS57179053U (fr)
DE (2) DE3114866A1 (fr)
DK (1) DK161582A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013009494A1 (fr) * 2011-07-12 2013-01-17 Emerson Electric Co. Soupape à gaz et procédé de commande

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406503A1 (de) * 1984-02-23 1986-03-27 Hydrotherm Gerätebau GmbH, 6110 Dieburg Gasheizkessel mit brenner ohne geblaese
DE3430985A1 (de) * 1984-08-23 1986-03-06 Ruhrgas Ag, 4300 Essen Verfahren und anordnung zur regelung eines industriebrenners mit integriertem rekuperator
CA1271101A (fr) * 1988-05-12 1990-07-03 Michael John Hoban Dispositif de tirage positif
DE3829664C1 (fr) * 1988-09-01 1990-01-18 Karl Dungs Gmbh & Co, 7060 Schorndorf, De
AT400624B (de) * 1992-05-11 1996-02-26 Vaillant Gmbh Verfahren zum steuern eines stufenlos einstellbaren brenners eines brennwertgerätes
EP0644377B1 (fr) * 1993-09-16 1996-10-23 Honeywell B.V. Dispositif de commande pour brûleur à gaz
US8381760B2 (en) 2008-07-14 2013-02-26 Emerson Electric Co. Stepper motor valve and method of control
US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
US9846440B2 (en) 2011-12-15 2017-12-19 Honeywell International Inc. Valve controller configured to estimate fuel comsumption
US9851103B2 (en) 2011-12-15 2017-12-26 Honeywell International Inc. Gas valve with overpressure diagnostics
US9835265B2 (en) 2011-12-15 2017-12-05 Honeywell International Inc. Valve with actuator diagnostics
US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link
US9234661B2 (en) * 2012-09-15 2016-01-12 Honeywell International Inc. Burner control system
US10422531B2 (en) 2012-09-15 2019-09-24 Honeywell International Inc. System and approach for controlling a combustion chamber
US9645584B2 (en) 2014-09-17 2017-05-09 Honeywell International Inc. Gas valve with electronic health monitoring
US10564062B2 (en) 2016-10-19 2020-02-18 Honeywell International Inc. Human-machine interface for gas valve
US11073281B2 (en) 2017-12-29 2021-07-27 Honeywell International Inc. Closed-loop programming and control of a combustion appliance
US10697815B2 (en) 2018-06-09 2020-06-30 Honeywell International Inc. System and methods for mitigating condensation in a sensor module
CN113883079B (zh) * 2021-09-26 2023-07-14 佛山市顺德区美的电子科技有限公司 送风装置及其控制方法

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
US1604271A (en) * 1924-12-17 1926-10-26 Ferdinand J Friedman Furnace equipment
DE685899C (de) * 1935-04-29 1939-12-28 Rateau Soc Regelvorrichtung fuer Abgasturbogeblaese fuer die Verbrennungsluft von Dampferzeugern
GB1405093A (en) * 1971-09-18 1975-09-03 Stordy Combustion Eng Ltd Control of fuel supply to a burner
US3917796A (en) * 1972-07-18 1975-11-04 Black Sivalls & Bryson Inc Method of incinerating vent gas
ES460107A1 (es) * 1976-06-28 1978-08-16 Claeys Flandria Nv Perfeccionamientos en los procedimientos y dispositivos paramantener practicamente constante a diversos regimenes de funcionamiento el rendimiento de aparatos a evacuacion for- zada comportando un dispositivo de combustion.
DE3163945D1 (en) * 1980-03-20 1984-07-12 Honeywell Bv Regulation apparatus for a gas-fired water or air heater which is controllable by a temperature sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013009494A1 (fr) * 2011-07-12 2013-01-17 Emerson Electric Co. Soupape à gaz et procédé de commande

Also Published As

Publication number Publication date
DK161582A (da) 1982-10-14
JPS57179053U (fr) 1982-11-12
DE3114866A1 (de) 1982-11-04
EP0062854A1 (fr) 1982-10-20
DE3260322D1 (en) 1984-08-09

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