EP0272348A1 - Appareil de régulation pour gaz avec régulateur automatique de pression - Google Patents

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

Info

Publication number
EP0272348A1
EP0272348A1 EP86118069A EP86118069A EP0272348A1 EP 0272348 A1 EP0272348 A1 EP 0272348A1 EP 86118069 A EP86118069 A EP 86118069A EP 86118069 A EP86118069 A EP 86118069A EP 0272348 A1 EP0272348 A1 EP 0272348A1
Authority
EP
European Patent Office
Prior art keywords
armature
valve
control device
spring
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.)
Granted
Application number
EP86118069A
Other languages
German (de)
English (en)
Other versions
EP0272348B1 (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 DE8686118069T priority Critical patent/DE3666289D1/de
Priority to EP86118069A priority patent/EP0272348B1/fr
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

Links

Images

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

  • 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. This object is achieved by the invention characterized in claim 1.
  • the applicant's older European patent application 86 115 105.8 describes a magnetic drive for servo pressure regulators with a membrane which is exposed to the pressure to be regulated and which carries the closing body of a blow-off valve, as well as an electromagnet consisting of a coil, magnetic core and armature, the armature of which can be tilted on the magnetic core on the one hand via a leaf spring Valve rod of a switch-on valve for the pressure regulator actuated and on the other hand acts on a pin influencing the pretension of the control spring of the pressure regulator.
  • the control spring has a spring constant that depends on the respective armature position of the electromagnet and increases with a decreasing air gap between armature and magnetic core.
  • control spring designed as a leaf spring is supported on a support which changes its effective spring length as a function of the anchor position.
  • the present invention is intended to create a gas control device which does not require such a special control spring with a non-linear characteristic curve and which is also easier to manufacture and adjust.
  • 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. 1c, while in FIG is shown laterally offset 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 carries the on-off valve 4 shown in FIGS. 1b and 1c, 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 gas control device has.
  • 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 setpoint specified by the actuating pin 16 via the control spring 12, this displaces the outlet pressure acting on the underside of the control diaphragm 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 shift its closing body 25 in the direction of 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 by two Stops in the form of snap rings 57 and 58 limited.
  • 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. 1b, has its free end bent away from the plane of the armature 7 away from it and is pretensioned by a cylinder head screw 63 screwed into a threaded hole of the armature 7, the head of which screw the cantilever 52 in the direction of the Anchor 7 presses.
  • 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 under the influence of the valve rod 32 biased by the closing spring 39, 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 one at outlet 19 The resulting outlet pressure 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 level of this pressure can be adjusted with the aid of the bushing 60, which, as mentioned, interacts with the snap ring 58 on the actuating pin 16.
  • the actuating pin 16 is taken down with the arm 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 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. 1 and 2a and thus also releases the valve rod 32 with its leaf spring 42, so that its 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.
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
DE8686118069T DE3666289D1 (en) 1986-12-24 1986-12-24 Gas regulation apparatus having a servo pressure regulator
EP86118069A EP0272348B1 (fr) 1986-12-24 1986-12-24 Appareil de régulation pour gaz avec régulateur automatique de pression
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 true EP0272348A1 (fr) 1988-06-29
EP0272348B1 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)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3942437A1 (de) * 1989-12-22 1991-07-04 Dungs Karl Gmbh & Co Gasarmatur
EP0462583A2 (fr) * 1990-06-21 1991-12-27 Honeywell B.V. Régulateur de pression de gaz commandé par une membrane
DE4140774A1 (de) * 1990-12-10 1992-06-11 Vaillant Joh Gmbh & Co Druckregler
EP0508357A1 (fr) * 1991-04-12 1992-10-14 Honeywell B.V. Servorégulateur de pression actionné par une bobine se déplaçant dans un champ magnétique
EP0533613A2 (fr) * 1991-07-22 1993-03-24 Joh. Vaillant GmbH u. Co. Servo-régulation de pression de gaz
DE19515286A1 (de) * 1995-04-26 1996-11-07 Honeywell Bv Servodruckregler für ein Gasventil
EP0800039A1 (fr) * 1996-04-02 1997-10-08 SIT LA PRECISA S.r.l. Une unité de soupape pour commander la pression d'alimentation d'un gaz

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932430A (en) * 1989-07-28 1990-06-12 Emerson Electric Co. Adjustable two-stage fluid pressure regulating valve
AT396849B (de) * 1990-12-10 1993-12-27 Vaillant Gmbh Druckregler
DE29618080U1 (de) * 1996-10-18 1996-12-05 Festo Kg Druckregler
DE19722600C2 (de) * 1997-05-30 2002-06-27 Dungs Karl Gmbh & Co Servoregler
WO2001031257A1 (fr) * 1999-10-27 2001-05-03 Emerson Electric Co. Soupape a gaz ayant un regulateur a reglages de minimum et de maximum independants
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
EP2183524A1 (fr) * 2007-07-23 2010-05-12 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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2567630A1 (fr) * 1984-07-13 1986-01-17 Vaillant Sarl Regulateur de pression de gaz

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351085A (en) * 1965-07-12 1967-11-07 Honeywell Inc Control apparatus
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2567630A1 (fr) * 1984-07-13 1986-01-17 Vaillant Sarl Regulateur de pression de gaz

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3942437A1 (de) * 1989-12-22 1991-07-04 Dungs Karl Gmbh & Co Gasarmatur
EP0462583A2 (fr) * 1990-06-21 1991-12-27 Honeywell B.V. Régulateur de pression de gaz commandé par une membrane
EP0462583A3 (en) * 1990-06-21 1993-12-08 Honeywell Bv Membrane controlled gas pressure regulator
DE4140774A1 (de) * 1990-12-10 1992-06-11 Vaillant Joh Gmbh & Co Druckregler
EP0508357A1 (fr) * 1991-04-12 1992-10-14 Honeywell B.V. Servorégulateur de pression actionné par une bobine se déplaçant dans un champ magnétique
EP0533613A2 (fr) * 1991-07-22 1993-03-24 Joh. Vaillant GmbH u. Co. Servo-régulation de pression de gaz
EP0533613A3 (en) * 1991-07-22 1993-08-11 Joh. Vaillant Gmbh U. Co. Servo-gas pressure regulator
DE19515286A1 (de) * 1995-04-26 1996-11-07 Honeywell Bv Servodruckregler für ein Gasventil
DE19515286C2 (de) * 1995-04-26 1998-07-02 Honeywell Bv Druckregler zum Erzeugen eines geregelten Steuerdrucks für ein membrangesteuertes Gasventil
EP0800039A1 (fr) * 1996-04-02 1997-10-08 SIT LA PRECISA S.r.l. Une unité de soupape pour commander la pression d'alimentation d'un gaz
US6003544A (en) * 1996-04-02 1999-12-21 Sit La Precisa S.R.L. Valve unit for controlling the delivery pressure of a gas

Also Published As

Publication number Publication date
EP0272348B1 (fr) 1989-10-11
DE3666289D1 (en) 1989-11-16
JPS63163516A (ja) 1988-07-07
US4785846A (en) 1988-11-22
DK674687A (da) 1988-06-25
DK674687D0 (da) 1987-12-21

Similar Documents

Publication Publication Date Title
EP0272348B1 (fr) Appareil de régulation pour gaz avec régulateur automatique de pression
EP0757200B1 (fr) Soupape magnétique de double sureté
DE19525384C2 (de) Doppel-Sicherheitsmagnetventil
EP0740242B1 (fr) Servo-régulateur de pression pour une soupape à gaz
EP0837275B1 (fr) Electrovanne d'évacuation de levage électrohydraulique
DE10013423A1 (de) Vakuumdruckeinstellvorrichtung
DE19645424C2 (de) Flußsteuerventil
DE3305092A1 (de) Druckregelventil
EP0829668A1 (fr) Vanne électromagnétique
EP0462583B1 (fr) Régulateur de pression de gaz commandé par une membrane
EP0074420A1 (fr) Clapet proportionnel électro-hydraulique
DE1802413A1 (de) Stroemungsmittel-Steuereinrichtung
DE3942437C3 (de) Gasarmatur
DE2831733B2 (fr)
DE19607019A1 (de) Vorrichtung zur elektromagnetischen Betätigung eines Gaswechselventiles für Verbrennungsmotoren
DE2509893A1 (de) Vorrichtung zum steuern und regeln des druckes eines stroemenden heizgases
EP0508357B1 (fr) Servorégulateur de pression actionné par une bobine se déplaçant dans un champ magnétique
DE3539145A1 (de) Magnetantrieb, insbesondere fuer magnetventile und/oder druckregler
EP0109978A1 (fr) Appareil de régulation de gaz avec un servorégulateur de pression
DE4316034C1 (de) Servodruckregler mit Einschalt-Magnetantrieb
EP0978688A2 (fr) Armature à gaz avec une soupape de commande et une soupape de démarrage
DE3508481A1 (de) Strom-druckwandler insbesondere fuer eine unterdruckregelung in kraftfahrzeugen
CH661573A5 (de) Steuerantrieb.
WO2000052337A1 (fr) Dispositif et procede permettant de regler un compresseur par etranglement du courant fluidique d'admission
DE2903201A1 (de) Druckregler

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19871028

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT NL

17Q First examination report despatched

Effective date: 19880927

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

REF Corresponds to:

Ref document number: 3666289

Country of ref document: DE

Date of ref document: 19891116

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900917

Year of fee payment: 5

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19901231

Year of fee payment: 5

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920701

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930914

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930924

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19941224

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051224