EP0272348B1 - Appareil de régulation pour gaz avec régulateur automatique de pression - Google Patents

Appareil de régulation pour gaz avec régulateur automatique de pression Download PDF

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Publication number
EP0272348B1
EP0272348B1 EP86118069A EP86118069A EP0272348B1 EP 0272348 B1 EP0272348 B1 EP 0272348B1 EP 86118069 A EP86118069 A EP 86118069A EP 86118069 A EP86118069 A EP 86118069A EP 0272348 B1 EP0272348 B1 EP 0272348B1
Authority
EP
European Patent Office
Prior art keywords
armature
valve
spring
control apparatus
gas
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
EP86118069A
Other languages
German (de)
English (en)
Other versions
EP0272348A1 (fr
Inventor
Cornelis Anthonius Kragten
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
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 BV filed Critical Honeywell BV
Priority to EP86118069A priority Critical patent/EP0272348B1/fr
Priority to DE8686118069T priority patent/DE3666289D1/de
Priority to US07/116,998 priority patent/US4785846A/en
Priority to JP62292931A priority patent/JPS63163516A/ja
Priority to DK674687A priority patent/DK674687A/da
Publication of EP0272348A1 publication Critical patent/EP0272348A1/fr
Application granted granted Critical
Publication of EP0272348B1 publication Critical patent/EP0272348B1/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
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • 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
    • F23N2235/18—Groups of two or more valves
    • 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
    • F23N2235/20—Membrane valves
    • 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
    • F23N2235/24—Valve details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7762—Fluid pressure type
    • Y10T137/7764—Choked or throttled pressure type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7782—With manual or external control for line valve

Definitions

  • the invention relates to a gas control device according to the preamble of claim 1.
  • a gas control device with a servo pressure regulator is known, the setpoint of which can be adjusted with the aid of an electromagnetic drive placed on the pressure regulator. It receives the supply gas pressure at the inlet of the gas control unit as auxiliary energy via a throttle and a solenoid valve. It regulates the pressure at the outlet of the gas control device, which for this purpose acts on a membrane that bears against a control spring on the opposite side.
  • the support point of this control spring which is fixed to the housing, is adjusted by the magnetic drive mentioned, whereby the setpoint of the pressure regulator can be set.
  • the object of the invention is to provide a simplified control device, which can also be easily adapted to different operating conditions of the connected gas consumer.
  • an upper housing part 1 carries an electromagnet 2, a servo pressure regulator 3 and a switch-on valve 4.
  • the actual spatial position of the servo pressure regulator 3 and the switch-on valve 4 is shown in Fig. 1, while in Fig. 1 b the switch-on valve 4 compared to the servo pressure regulator 3 is shown offset laterally by the amount A to the left in order to avoid mutual concealment.
  • the electromagnet 2 consists of a yoke 5, an armature 7, which is tiltably attached to it via a spring plate 6, a magnetic core 8 and an excitation coil 9 surrounding it.
  • the servo pressure regulator 3, likewise carried by the upper housing part 1, consists of a membrane 11, a control spring 12, one of the diaphragm 11 carried closing body 13 and a valve seat 14 cooperating therewith, the closing body and valve seat forming a servo valve.
  • the control spring 12 is placed with its end facing away from the membrane 11 on a holding piece 15 which sits at the free end of the actuating pin 16.
  • the membrane chamber 17 between the membrane 11 and the valve seat 14 is connected via a channel 18 to the outlet side 19 of the gas control valve.
  • the space 20 below the valve seat 14 communicates with the inlet 22 of the gas control device via the on-off valve 4 and a throttle point 21 and forms the drive chamber of the membrane-operated gas control valve.
  • valve seat 23 located between gas inlet 22 and gas outlet 19 and an associated closing body 25, which is biased in the closing direction by a spring 24 and which is acted upon by the pressure in the drive chamber 20 in the opening direction via a membrane 26.
  • the gas control valve 23 to 26 is accommodated in a lower housing part 27, which is screwed to the upper housing part 1 with the interposition of a sealing plate 28.
  • the control valve 23, 25 is opened further via the membrane 26 than when the control pressure is low.
  • the closing body 13 can lift off the valve seat 14 in order to reduce the control pressure in the chamber 20 via the membrane chamber 17 and the channel 18 to the outlet 19 of the gas control device.
  • the structure and mode of operation of such servo pressure regulators are known per se, for example from EP-PS 00 62 856 and 00 39 000.
  • the upper housing part 1 still carries the on-off valve 4 shown in FIGS. 1 and 1 c, consisting of a valve seat 31 and a closing body 33 fastened to the valve rod 32 and a second valve seat 34 opposite the seat 31, which has a passage 35 to the outlet 19 of the Has gas control device.
  • a sealing membrane 36 seals the chamber 37 above the valve seat 31 with respect to the valve rod 32 penetrating this membrane. Via the throttle point 21, the chamber 37 is connected to the inlet 22 of the gas control device.
  • the space between the two valve seats 31 and 34 of the on-off valve 4 is connected to the drive chamber 20 (see FIG. 1b) via a channel 38.
  • a closing spring 39 is supported on one side on the upper housing part 1 and, on the other hand, rests on a collar 40 of the valve rod 32. It pretensions the closing body 33 of the on-off valve 4 in the closing direction of the valve seat 31.
  • the on-off valve 31, 33 is opened, the input gas pressure reaches the drive chamber 20 via the throttle point 21.
  • the drive chamber of the control valve 23 to 26 is supplied with the required auxiliary energy, namely the input gas pressure. If the gas pressure at the outlet 19 rises above a desired value specified by the actuating pin 16 via the control spring 12, then this displaces the output pressure acting on the underside of the control membrane 11 and lifts the closing body 13 from the valve seat 14.
  • the control pressure in the drive chamber 20 is partially reduced to the outlet 19 via the valve 13/14. As a result of this reduction in the control pressure in the chamber 20, the closing spring 24 of the control valve can close the closing body 25 thereof move the closed position.
  • a leaf spring 42 is attached to the armature 7 of the electromagnet by means of two rivets 41, the free end 43 of which acts on the valve rod 32 of the on-off valve 4.
  • the valve rod 32 is provided with a collar 44, against which the free end 43 of the leaf spring 42, which is provided with a hole, bears.
  • a reduced-diameter end piece 45 of the valve rod 22 carries a locking ring 46 in a circumferential groove.
  • the valve rod 32 is under the influence of the return spring 39, which is supported on the one hand fixed to the housing on an intermediate wall 47 and on the other hand on the collar 40 of the valve rod 32. It acts in the closing direction of the switch-on valve 31, 33.
  • a relatively rigid arm 52 in the form of a flat sheet is fastened to the armature 7 by means of two rivets 51, the free end 53 of which has a hole 54 through which a reduced-diameter end piece 55 of the actuating pin 16 projects.
  • the pin has a collar 56, against which the free end 53 of the arm 52 lies during operation and thus takes the pin 16 with it.
  • the movement of the pin 16 in the axial direction is limited by two stops in the form of snap rings 57 and 58.
  • the snap ring 57 interacts with a screw sleeve 59 which is adjustable in a bushing 60 by screwing.
  • the bushing 60 in turn can be adjusted in the thread 61 of the tubular piece 62 fixed to the housing.
  • the cantilever 52 as shown in FIG. 1 b, has its free end bent away from the plane of the armature 7 and stands under the pretensioning of a cylinder head screw 63 screwed into a threaded hole of the armature 7, the head of which rests on the arm 52 in the direction presses the anchor 7.
  • the armature 7 is pressed away from the pole piece 65 of the magnetic core 8 by a return spring 64.
  • the spring 64 is supported on the one hand on the upper housing part 1 and on the other hand carries at its free end a transmission piece 66, into which an adjusting screw 67 adjustable in the armature 7 projects with its pin extension 68.
  • the return spring 64 presses the armature 7 away from the pole piece 65 via the adjusting screw 67.
  • the armature is also influenced by the valve rod 32, which is prestressed by the closing spring 39 and which also tries to push the armature away from the pole piece 65 via the collar 44 and the leaf spring 42.
  • the closing spring 39 keeps the on-off valve 31, 33 closed via the collar 40 and the valve rod 32, while the closing spring 24 also keeps the closing body 25 of the gas control valve in the closed position.
  • the outlet pressure P at the outlet 19 of the gas control device is zero (see FIG. 3).
  • the actuating pin 16 rests on the bush 60 with its snap ring 58.
  • the control spring 12 thus has the lowest possible preload.
  • the armature 7 tilts around the spring joint 6 and, with the leaf spring 42, presses the valve rod 32 downward against the force of the return spring 39, so that the closing body 33 lifts off the valve seat 31 and Gas can flow from the inlet 22 of the gas control device via the nozzle 21 through the on-off valve 31, 33 into the drive chamber 20 of the diaphragm drive for the gas control valve 23 to 26.
  • the closing body 33 closes the opposite valve seat 34 and thus blocks the connection of the drive chamber 20 via the passage 35 to the outlet 19.
  • the diaphragm 26 moves the closing body 25 downward via the plunger 29 lifts it off the valve seat 23. This allows gas to flow from inlet 22 to outlet 19.
  • the output pressure at the outlet 19 also reaches the chamber 17 below the control membrane 11 of the pressure regulator via the channel 18. If the output pressure rises above the value at which the force of the control spring 12 acting on the diaphragm 11 from above exceeds the force exerted on the diaphragm 11 by the gas pressure in the chamber 17 from below, the closing body 13 lifts off the valve seat 14, and the control pressure prevailing in the drive chamber 20 is reduced through the control valve 13, 14 and through the channel 18 to the outlet 19.
  • the actuating pin 16 is taken down with the cantilever 52 and the control spring 12 is compressed. This increases the force acting on the upper side of the membrane 11 and determining the target value of the outlet pressure of the gas control device. The further the actuating pin 16 is pressed down, the greater this force and the greater the output pressure of the gas control device which is effective in the chamber 17 and is supplied via the channel 18 before it closes the closing body 13 of the blow-off valve 13, 14 via the membrane 11 can take off from its seat 14.
  • the actuating plunger 16 will be displaced so far down that the snap ring 57 bears against the screw sleeve 59.
  • the maximum outlet pressure Pmax is reached. This can be adjusted by adjusting the screw sleeve 59 in the socket 60.
  • the minimum outlet pressure Pmin can be set by adjusting the bushing 60 in the thread 61 of the tubular piece 62 fixed to the housing.
  • the return spring 64 is also put under tension during the further movement of the armature 7. It thus supports the control spring 12, and by adjusting the adjusting screw 67 the size or the influence of the restoring force exerted by the spring 64 on the armature 7 can be adjusted. This enables the slope of the pressure / current characteristic in the modulation range to be set.
  • the amount of the dead zone Z is predetermined by the screw 63, the head of which rests against the arm 52, the spread of which from the plane of the armature 7 is determined.
  • a non-magnetic spacer 70 on the armature 7 ensures that the armature can under no circumstances bear against and adhere to the pole piece 65.
  • the current i is interrupted, whereby the armature 7, under the influence of the return spring 64 and the control spring 12, returns to the rest position shown in FIGS Return spring 39 can move the closing body 33 back into the closed position shown in FIG. 2a.
  • the pressure regulator is thus cut off from the inlet pressure via the closing body 33, and the control pressure prevailing in the control chamber 20 escapes via the channel 35 to the outlet.
  • the closing spring 24 of the gas control valve moves the closing body 25 in the closed position.
  • An important advantage of the invention is that with a single magnetic drive and using conventional springs and other components, both the actuation of the switch-on solenoid valve and the control of the setpoint of the servo pressure regulator is achieved by an electrical current.
  • the setpoint can be continuously adjusted between a minimum value and a maximum value of the device outlet pressure. Both the minimum and the maximum pressure can be set separately, and the slope of the control characteristic in the modulation range can also be changed. The result is a versatile gas control device that can be easily adapted to different operating conditions.

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

Claims (9)

1. Appareil de régulation pour gaz comprenant une soupape principale (23-25) pouvant être commandée par un régulateur automatique de pression (3) et dont l'organe de fermeture (25) est précontraint par un ressort (24) dans le sens de la fermeture, comportant
a) une membrane (31) du régulateur automatique de pression (3) portant l'organe de fermeture (13) d'une soupape d'évacuation (13, 14) qui met en communication une chambre de pression de commande (20) de la soupape principale (23-25) avec l'évacuation du gaz (19) de l'appareil de régulation;
b) un ressort de régulation (12) déterminant la valeur de consigne de la pression du gaz et dont le support (15) opposé à la membrane est réglable, agissant sur la membrane (11);
c) une soupape de mise en marche (31, 33) subissant l'action de la précontrainte d'un ressort de fermeture de soupape (39) étant disposée sur la voie de circulation du gaz entre l'admission (22) de l'appareil de régulation et le régulateur automatique de pression (3);

caractérisé en ce que
d) la membrane (11) du régulateur automatique de pression (3) subit l'action de la pression de gaz à réguler;
e) un électroaimant (2) comprenant un enroulement (9), un noyau magnétique (8) et un induit de basculement (7) agit avec son induit (7) sur la tige de soupape (32) de la soupape de mise en marche (31, 33) d'une part et sur un axe (16) portant le support (15) du ressort de régulation (12) distant de la membrane d'autre part; et
f) un ressort de rappel de l'induit (64) en appui fixe d'un côté sur le boiter agit seulement sur l'induit (7) lorsque celui-ci aura effectué une course à vide suffisante pour ouvrir la soupape de mise en marche (31, 33).
2. Appareil de régulation selon la revendication 1, caractérisé en ce qu'un ressort à lame agissant avec son extrémité libre (43) sur la tige de soupape (32) d'une part et un bras (52) s'étendant essentiellement de manière parallèle au ressort à lame (42) d'autre part sont respectivement fixés d'un côté sur l'induit (7).
3. Appareil de régulation selon la revendication 2, caractérisé en ce que la position relative réciproque du bras (52) et de l'induit (7) est réglable dans le sens d'actionnement de l'axe (16).
4. Appareil de régulation selon la revendication 3, caractérisé en ce que le bras (52) est constitué par une tôle relativement rigide recourbée vers l'extérieur entre son point de fixation (51) au niveau de l'induit (7) et son extrémité libre (53) par rapport à l'induit (7) et qu'une vis d'ajustement (63) vissée dans l'induit (7) passe à travers un alésage du bras (52), celui-ci étant précontraint par la tête de la vis (63) en direction de l'induit.
5. Appareil de régulation selon l'une des revendications 1 à 4, caractérisé en ce que le ressort de rappel (64) de l'induit porte à son extrémité libre une pièce de transmission (66) en forme de douille, dans laquelle une vis de réglage (67) réglable dans l'induit (7) pénètre avec un appendice (68) de manière qu'elle vienne en appui dans le fond de la pièce de transmission (66) seulement après l'ouverture de la soupape de mise en marche (31, 33) et agit sur le ressort de rappel (64) de l'induit.
6. Appareil de régulation selon l'une des revendications 1 à 5, caractérisé en ce qui une course à vide (2) est prévue entre le bras (52) et l'axe de manoeuvre (16) du régulateur automatique de pression (3 ) dont la longueur est réglable par une vis d'ajustement (63) de telle sorte que le déplacement de l'axe d'actionnement (16) par le bras (52) et l'action du ressort de rappel (64) sur l'induit (7) commencent simultanément.
7. Appareil de régulation selon l'une des revendications 1 à 6, caractérisé en ce que l'axe d'actionnement, (16) comporte deux butées (57, 58) dont chacune coopère avec une contrebutée (59, 61) réglable dans le boîtier pour l'ajustement de la pression minimale et maximale initiale de l'appareil de régulation.
8. Appareil de régulation selon la revendication 7, caractérisé en ce que les deux contrebutées (59, 61) sont constituées par des douilles à visser réglables à l'intérieur d'une pièce tubulaire.
9. Appareil de régulation selon l'une des revendications 1 à 8, caractérisé en ce que le ressort de rappel de l'induit (64) et/ou le ressort de réglage (12) est un ressort hélicoïdal.
EP86118069A 1986-12-24 1986-12-24 Appareil de régulation pour gaz avec régulateur automatique de pression Expired EP0272348B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP86118069A EP0272348B1 (fr) 1986-12-24 1986-12-24 Appareil de régulation pour gaz avec régulateur automatique de pression
DE8686118069T DE3666289D1 (en) 1986-12-24 1986-12-24 Gas regulation apparatus having a servo pressure regulator
US07/116,998 US4785846A (en) 1986-12-24 1987-11-05 Gas control apparatus with a pressure regulator
JP62292931A JPS63163516A (ja) 1986-12-24 1987-11-20 サーボ圧力調節器付きガス制御装置
DK674687A DK674687A (da) 1986-12-24 1987-12-21 Gasregulator med servotrykregulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86118069A EP0272348B1 (fr) 1986-12-24 1986-12-24 Appareil de régulation pour gaz avec régulateur automatique de pression

Publications (2)

Publication Number Publication Date
EP0272348A1 EP0272348A1 (fr) 1988-06-29
EP0272348B1 true EP0272348B1 (fr) 1989-10-11

Family

ID=8195675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86118069A Expired EP0272348B1 (fr) 1986-12-24 1986-12-24 Appareil de régulation pour gaz avec régulateur automatique de pression

Country Status (5)

Country Link
US (1) US4785846A (fr)
EP (1) EP0272348B1 (fr)
JP (1) JPS63163516A (fr)
DE (1) DE3666289D1 (fr)
DK (1) DK674687A (fr)

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US4932430A (en) * 1989-07-28 1990-06-12 Emerson Electric Co. Adjustable two-stage fluid pressure regulating valve
DE3942437C3 (de) * 1989-12-22 1994-04-07 Dungs Karl Gmbh & Co Gasarmatur
DE4019757A1 (de) * 1990-06-21 1992-01-02 Honeywell Bv Membrangesteuerter gasdruckregler
DE4140774C2 (de) * 1990-12-10 1996-11-21 Vaillant Joh Gmbh & Co Druckregler
AT396849B (de) * 1990-12-10 1993-12-27 Vaillant Gmbh Druckregler
DE4111945A1 (de) * 1991-04-12 1992-10-15 Honeywell Bv Ueber einen tauchspulantrieb steuerbarer servodruckregler
AT396828B (de) * 1991-07-22 1993-12-27 Vaillant Gmbh Servo-gasdruckregler
DE19515286C2 (de) * 1995-04-26 1998-07-02 Honeywell Bv Druckregler zum Erzeugen eines geregelten Steuerdrucks für ein membrangesteuertes Gasventil
EP0800039B1 (fr) * 1996-04-02 2001-03-21 Sit la Precisa S.p.a. Une unité de soupape pour commander la pression d'alimentation d'un gaz
DE29618080U1 (de) * 1996-10-18 1996-12-05 Festo Kg Druckregler
DE19722600C2 (de) * 1997-05-30 2002-06-27 Dungs Karl Gmbh & Co Servoregler
AU2476900A (en) * 1999-10-27 2001-05-08 Emerson Electric Co. Gas valve having a regulator with independent minimum and maximum adjustments
CN100498258C (zh) * 2005-08-02 2009-06-10 佛山市顺德区万和集团有限公司 风压智能检测装置及其检测方法
WO2009012527A1 (fr) * 2007-07-23 2009-01-29 Clara Appliances Pty Ltd Système de régulation d'écoulement de gaz
US10502340B2 (en) 2015-08-17 2019-12-10 Honeywell International Inc. System for a valve setup
US10503181B2 (en) 2016-01-13 2019-12-10 Honeywell International Inc. Pressure regulator
ITUA20163560A1 (it) 2016-05-18 2017-11-18 Sit Spa Metodo di pilotaggio di una valvola di regolazione della portata di gas combustibile ad un bruciatore, in particolare per caldaie a condensazione ad elevata modulazione di potenza
CN106958523B (zh) * 2017-05-20 2018-09-21 重庆水泵厂有限责任公司 隔膜泵排油结构

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US3351085A (en) * 1965-07-12 1967-11-07 Honeywell Inc Control apparatus
US3896857A (en) * 1974-02-20 1975-07-29 Essex International Inc Control device having a bleed valve and an automatic valve operated sequentially by a single bimetal element
US4044794A (en) * 1975-11-10 1977-08-30 Johnson Controls, Inc. Slow-opening gas valve
DE3015980A1 (de) * 1980-04-25 1981-11-05 Honeywell B.V., Amsterdam Gasdruckregler
DE3035925A1 (de) * 1980-09-24 1982-05-13 Honeywell B.V., Amsterdam Membrandruckregler
DE3114942A1 (de) * 1981-04-13 1982-10-28 Honeywell B.V., Amsterdam Regeleinrichtung fuer den gasbefeuerten heizkessel einer warmwasser-heizungsanlage
DE8421412U1 (de) * 1984-07-13 1984-10-11 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Gasdruckregler

Also Published As

Publication number Publication date
US4785846A (en) 1988-11-22
EP0272348A1 (fr) 1988-06-29
DK674687A (da) 1988-06-25
DE3666289D1 (en) 1989-11-16
DK674687D0 (da) 1987-12-21
JPS63163516A (ja) 1988-07-07

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