EP0048486A1 - Régulateur de pression à membrane - Google Patents

Régulateur de pression à membrane Download PDF

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Publication number
EP0048486A1
EP0048486A1 EP19810107514 EP81107514A EP0048486A1 EP 0048486 A1 EP0048486 A1 EP 0048486A1 EP 19810107514 EP19810107514 EP 19810107514 EP 81107514 A EP81107514 A EP 81107514A EP 0048486 A1 EP0048486 A1 EP 0048486A1
Authority
EP
European Patent Office
Prior art keywords
spring
pressure regulator
adjusting
throttle body
pressure
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
EP19810107514
Other languages
German (de)
English (en)
Other versions
EP0048486B1 (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
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6112700&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0048486(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Honeywell BV filed Critical Honeywell BV
Publication of EP0048486A1 publication Critical patent/EP0048486A1/fr
Application granted granted Critical
Publication of EP0048486B1 publication Critical patent/EP0048486B1/fr
Expired legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/02Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/06Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using bellows; using diaphragms
    • F23N5/067Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using bellows; using diaphragms using mechanical means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N1/00Regulating fuel supply
    • F23N1/007Regulating fuel supply using mechanical means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00Measuring
    • F23N2225/08Measuring temperature
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7758Pilot or servo controlled
    • Y10T137/7762Fluid pressure type
    • Y10T137/7764Choked or throttled pressure type

Definitions

  • the invention relates to a membrane pressure regulator according to the preamble of claim 1.
  • a modulating pressure regulator is known from DE-PS 26 46 310.
  • the membrane is supported by an auxiliary spring on a first spring determining the minimum pressure acting on the membrane, while a second spring determining the maximum pressure acting on the membrane is supported on the one hand on a counterpart fixed to the housing and on the other hand on a sleeve serving as a driving stop for the transmission lever acts, which carries a pin opposite a driving surface of the first spring.
  • the object of the invention is to provide a possibility for simple adjustment of the control characteristic in such a modulating membrane pressure regulator.
  • This is achieved by the invention characterized in claim 1. It is known to replace the spring acting on the diaphragm in the case of pressure regulators if the pressure regulator is to be changed over to a different pressure range.
  • the invention leads to a solution in which the maximum pressure, that is to say the pressure range, is predetermined by the setting spring mentioned and thus remains unaffected when the auxiliary spring is replaced. If you wedge the auxiliary spring against another one with a different spring strength, only the slope of the spring characteristic in the modulation range does not change but the maximum or minimum outlet pressure of the pressure regulator.
  • the invention aims to have a reference variable, for example the output manipulated variable of a temperature sensor, act on the pressure regulator such that in the modulation range this measured reference variable determines the operating point of the pressure regulator on the inclined part of its characteristic.
  • a reference variable for example the output manipulated variable of a temperature sensor
  • Fig. 1 the main valve 1 of a gas control device shown only partially is controlled by the control pressure generated by a membrane pressure regulator 30.
  • a valve seat 5 is arranged, which can be opened more or less with the help of a closing body 6.
  • a membrane 7 separates the outlet chamber 4 from a control pressure chamber 8. The pressure in the chamber 8 works via the membrane 7 against the force of a closing spring 9, which tries to move the closing body 6 in the closing direction of the main valve 5, 6.
  • the inlet chamber 3 is also connected via a throttle 11 to the inlet chamber 12 of a solenoid valve 13, which is shown in FIG. 1 in the switched-on state. It consists of a magnetic core 14 with excitation winding 15 and an armature 16 which carries a throttle body 17.
  • its input chamber 12 is connected on the one hand via the channel 18 to the control pressure chamber 8 of the main valve 1 and on the other hand via a channel 19 with the inlet side 20 of the diaphragm pressure regulator 30.
  • a channel 21 connects the chamber 31 of the diaphragm pressure regulator 30 with the outlet chamber 4 of the main valve.
  • the switch-on solenoid valve 13 is different from the illustration shown in FIG. 1 in the off position, the connection between the chambers 12 and 8 is blocked by the closing body 17, while at the same time the input chamber 20 of the pressure regulator 30 on the one hand via the channel 22 with the outlet chamber 4 of the main valve 1 and on the other hand via the channel 18 with the control pressure chamber 8 of the main valve.
  • the solenoid valve 13 responds as soon as the supply of heat is required, for example the temperature in a room to be heated or water heater below a predetermined Setpoint drops. To generate the required heat, a burner is connected to the outlet 23 of the main valve 1.
  • the inlet chamber 20 of the diaphragm pressure regulator 30 opens into a valve seat 32 which can be more or less closed with the aid of a throttle body 33.
  • the throttle body 33 is fastened via a diaphragm plate 34 and a throttle body carrier 35 to a diaphragm 36 delimiting the chamber 31 on the side facing away from the valve seat 32, the diaphragm 36 with its circumferential bead 37 between the lower housing part 38 of the pressure regulator 30 and a disk 39 having the valve seat 32 is clamped pressure-tight.
  • a cover 40 is placed on the base plate 38 of the pressure regulator, which cover also serves as a support for a thermomechanical converter 41.
  • the throttle body carrier 35 and thus the diaphragm 36 are under the influence of two adjusting springs 42 and 43.
  • the last-mentioned adjusting spring 43 rests on a shoulder 44 of the throttle body carrier 35 and is clamped with the other end of the housing, for example with the aid of a rivet 45 on a housing shoulder Base plate 38 attached.
  • An adjusting screw 46 adjustable in the cover 40 acts on this adjusting spring 43, with the aid of which the minimum outlet pressure of the pressure regulator can be specified.
  • the other adjusting spring 42 which is also designed as a leaf spring. It is carried by an intermediate lever 48 which is pivotable about an axis 49.
  • the transmission lever 51 is mounted in two tabs 50 of a transmission lever 51, which in turn is pivotable about an axis 52 fixed to the housing.
  • the transmission lever 51 is under the influence of a helical spring 53 which presses it in a counterclockwise direction and which is supported on the base plate 38 on one side fixed to the housing.
  • the free end 54 of the transmission lever 51 is bent at right angles and serves as a stop for limiting the rotation of the intermediate lever 48 in the clockwise direction.
  • an adjusting screw 55 can be adjusted in a threaded bore 56 of the housing cover 40 for the adjusting spring 42.
  • An auxiliary spring 58 is connected between the adjusting screw 55 and a spring plate 57 resting on the adjusting spring 42, the pretensioning of which can be adjusted using the adjusting screw 55 and which can be easily replaced if necessary.
  • the stiffness of this auxiliary spring 58 determines the steepness of the pressure regulator characteristic in the modulation range.
  • the thermoelectric converter 41 converts the temperature changes measured by an expansion temperature sensor 61 into a mechanical adjustment of the pin 62.
  • a membrane capsule 63 is used, which is supported on the one hand on an adjusting body 64 and on the other hand can expand against the force of a spring 65.
  • the spring plate 66 bears on the membrane capsule 63, to which the output pin 67 of the converter is fastened. It acts on a lever 68 mounted on the housing, which in turn carries the pin 62.
  • a leaf spring 69 is also attached to the lever 68 and actuates the electrical switch 70 when a predetermined temperature limit value is exceeded.
  • the adjusting body 64 can be adjusted with the aid of a rotary knob 71 and the support point for the membrane capsule 63 can thus be changed in a known manner. This sets the temperature setpoint.
  • the pressure regulator 30 is switched on and off with the aid of the switch-on solenoid valve 13, in that this either enables or blocks the gas supply to the pressure regulator.
  • Another possibility for locking the pressure regulator is to mechanically pull the throttle body 33 away from the seat 32 and in this way block the pressure regulator.
  • an electromagnet acting on the throttle body carrier 35 with the diaphragm 36 and the throttle body 33 in alignment can be placed on the cover 40, which, when switched on, releases the pressure regulator and blocks the movement of the throttle body carrier 35 in the switched-off state.
  • a servo-controlled gas control device with modulating pressure regulator shown in Fig. 1 works as follows: It is assumed that a boiler supplies heating water for radiators installed in a room and the boiler is heated by a gas burner. This burner is connected to the outlet 23.
  • the expansion temperature sensor 61 measures the temperature of the boiler water. With the excitation coil 15 of the solenoid valve, on the one hand the contact of a room thermostat is connected in series, which closes as soon as the temperature measured in the room falls below a predetermined setpoint. In addition, there is another contact with this series connection, namely the normally open contact of the switch 70, which opens as soon as the boiler water temperature measured by the temperature sensor 61 exceeds a predetermined maximum limit value.
  • the closing solenoid valve is de-energized and thus the gas supply to the burner is interrupted. So only to the burner then and hur as long as gas flows as long as on the one hand the room temperature is below the setpoint, i.e. a heat supply to the room is required, and on the other hand the existing boiler water temperature (sensor 61) is not sufficient to supply the radiators installed in the room with enough hot water, So a heat supply to the boiler water is required. If, on the other hand, the boiler water is hot enough to supply sufficient heat to the room or if no heat is required to the room at all, then the burner should not be able to be supplied with gas.
  • the solenoid valve 13 responds and by means of the throttle body 17 releases the gas supply on the one hand via the channel 32 to the pressure regulator 30 and on the other hand via the channel 18 to the control chamber 8 of the main valve 1.
  • the pressure regulator 30 determines the pressure prevailing in the chamber 12 and in the above-mentioned channels as well as in the control chamber 8 and thus the degree of opening of the main valve 5, 6.
  • the boiler water temperature measured by the sensor 61 is low, so that the membrane capsule 63 is largely compressed.
  • the pin 62 does not exert any appreciable force on the transmission lever 51; rather, it is pivoted counterclockwise as far as possible by the spring 53.
  • the central part of the adjusting spring 42 is supported on the spring plate 57 and thus on the adjusting screw 55 via the auxiliary spring 58. If the spring 53 presses the bearing point 49 and thus the left lever arm of the adjusting spring 42 upwards, the right lever arm and thus the free end 73 of the adjusting spring 42 abutting the end 47 of the throttle body carrier 35 in the direction of arrow 72 with the greatest possible force in the direction of pressed the valve seat 32.
  • the closing body 33 closes the valve seat 32 and thus the connection between channel 19 and channel 21, so that the prevailing control pressure in the chamber 12 cannot be reduced via the above-mentioned channels to the outlet chamber 4 of the main valve, but is present in full via the channel 18 in the control pressure chamber 8 and the diaphragm 7 together with the throttle body 6 against Force of the spring 9 in the fully open position of the main valve 5, 6 presses.
  • the level of this maximum pressure is determined by the position of the adjusting screw 55.
  • the start of the modulation range M is thus reached at point A of the operating characteristic.
  • the force of the adjusting spring 42 acting on the end 47 of the throttle body carrier 35 is determined primarily by the spring force of the auxiliary spring 58.
  • the harder this Spring is, the steeper the curve extends in the modulation region M.
  • the broken line curve part A'B of using a harder auxiliary spring 58 and the cam member A "B corresponds to a softer auxiliary spring 58 as in the case of AB.
  • the auxiliary spring 58 is completely relaxed and no longer exerts any force on the adjusting spring 42. This therefore becomes ineffective. Only the adjusting spring 43 acts on the throttle body carrier 35, the pretensioning of which can be predetermined with the aid of the adjusting screw 46.
  • the closing body 33 opens the blow-off channel 20, 21 towards the outlet, so that the control pressure in the control chamber 8 drops and the main valve 5, 6 is moved by the closing spring 9 in the direction of the closed position
  • the leaf spring 69 fastened to it, actuates the switch 70 and thus opens the circuit for the solenoid valve 13, the latter becomes currentless and its closing body 17 blocks the gas supply to the pressure regulator 30.
  • the control pressure chamber becomes 8 depressurized via the channels 18 and 21 to the outlet.
  • the main valve 5, 6 closes.
  • the switch 70 closes, the switch-on solenoid valve 13 responds again and the burner is switched on again with a minimal gas throughput. If the temperature continues to decrease despite this gas supply 5, the spring 53 pivots the transmission lever 51 counterclockwise until the adjusting spring 42 again against the end 47 of the throttle body Carrier 35 sets and the auxiliary spring 58 is effective. Depending on the boiler water temperature measured by means of the temperature sensor 61, the outlet pressure P is set to a value in the modulation range M between points A and B of the characteristic curve.
  • the room temperature sensor detects an increase in the room temperature above the setpoint, its make contact opens and consequently switches off the closing solenoid valve 13. The gas supply to the burner is thus blocked in the same way as was explained above in connection with the opening of the overtemperature switch 70.
  • Fig. 3 shows an embodiment of the diaphragm pressure regulator, in which the transmission lever 151 and the intermediate lever 148 have exchanged their spatial positions with respect to the arrangement according to Fig. 1.
  • the transmission lever 151 can be pivoted about the axis 152 which is fixed to the housing and, as the force of the command variable 81 increases, it is pivoted counterclockwise against the force of the return spring 53.
  • the pivot axis 49 for the intermediate lever 148 is mounted in two tabs 50 of the transmission lever 151. Its bearing point is here on the side of the bearing point 152 of the transmission lever 151 facing away from the throttle body carrier 35.
  • the mode of operation of the arrangement according to FIG. 3 is the same as that previously described with reference to FIG. 1.
  • the stop 54 in turn limits the pivoting of the intermediate lever 148 in the clockwise direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Fluid Pressure (AREA)
  • Feeding And Controlling Fuel (AREA)
EP19810107514 1980-09-24 1981-09-22 Régulateur de pression à membrane Expired EP0048486B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3035925 1980-09-24
DE19803035925 DE3035925A1 (de) 1980-09-24 1980-09-24 Membrandruckregler

Publications (2)

Publication Number Publication Date
EP0048486A1 true EP0048486A1 (fr) 1982-03-31
EP0048486B1 EP0048486B1 (fr) 1983-11-30

Family

ID=6112700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810107514 Expired EP0048486B1 (fr) 1980-09-24 1981-09-22 Régulateur de pression à membrane

Country Status (3)

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US (1) US4406400A (fr)
EP (1) EP0048486B1 (fr)
DE (2) DE3035925A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272348B1 (fr) * 1986-12-24 1989-10-11 Honeywell B.V. Appareil de régulation pour gaz avec régulateur automatique de pression
US5040563A (en) * 1990-07-09 1991-08-20 The Devilbiss Company Adjustable air pressure valve
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
US5944257A (en) * 1996-11-15 1999-08-31 Honeywell Inc. Bulb-operated modulating gas valve with minimum bypass
US6786225B1 (en) 2000-11-15 2004-09-07 Emerson Electric Co. Three-stage relay control
US7341072B2 (en) * 2003-05-02 2008-03-11 Carleton Technologies, Inc. Oxygen supply system having a central flow control unit
CA2832937C (fr) * 2004-10-14 2015-06-16 John Vancak Rechauffeur a tubes radiants
JP2012097940A (ja) * 2010-10-30 2012-05-24 Noritz Corp 燃料供給用ヘッドおよびこれを備えた燃焼装置
US10503181B2 (en) 2016-01-13 2019-12-10 Honeywell International Inc. Pressure regulator
US11105415B2 (en) * 2018-07-03 2021-08-31 Transgo, Llc Methods and systems for improving the operation of transmissions for motor vehicles
TWI745063B (zh) * 2020-08-31 2021-11-01 七宇實業股份有限公司 以低動力控制大流量之氣體安全裝置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2381799A (en) * 1943-09-20 1945-08-07 Honeywell Regulator Co Diaphragm valve
FR1501425A (fr) * 1966-01-06 1967-11-10 Controls Co Of America Perfectionnements relatifs aux soupapes de commande d'écoulement de fluide
DE2646310B1 (de) * 1976-10-14 1978-04-13 Honeywell Bv Druckregler
NL8000098A (nl) * 1979-01-27 1980-07-29 Honeywell Bv Drukregelaar.
EP0013993A2 (fr) * 1979-01-27 1980-08-06 Honeywell B.V. Régulateur de pression

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611542A (en) * 1948-08-23 1952-09-23 Honeywell Regulator Co Fluid-flow control device and system
US3235180A (en) * 1963-01-18 1966-02-15 Robertshaw Controls Co Combination pressure and temperature control
US3307785A (en) * 1965-07-22 1967-03-07 Honeywell Inc On-off and modulating condition control valve
US3366140A (en) * 1966-03-03 1968-01-30 Honeywell Inc Control apparatus including bimetal actuator with temperature compensator
US4182488A (en) * 1977-12-30 1980-01-08 Honeywell Inc. Pressure regulator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2381799A (en) * 1943-09-20 1945-08-07 Honeywell Regulator Co Diaphragm valve
FR1501425A (fr) * 1966-01-06 1967-11-10 Controls Co Of America Perfectionnements relatifs aux soupapes de commande d'écoulement de fluide
DE2646310B1 (de) * 1976-10-14 1978-04-13 Honeywell Bv Druckregler
NL7711216A (nl) * 1976-10-14 1978-04-18 Honeywell Bv Drukregelaar.
FR2368082A1 (fr) * 1976-10-14 1978-05-12 Honeywell Bv Regulateur de pression
NL8000098A (nl) * 1979-01-27 1980-07-29 Honeywell Bv Drukregelaar.
EP0013993A2 (fr) * 1979-01-27 1980-08-06 Honeywell B.V. Régulateur de pression
FR2447574A2 (fr) * 1979-01-27 1980-08-22 Honeywell Bv Regulateur de pression
GB2042220A (en) * 1979-01-27 1980-09-17 Honeywell Bv Pressure regulator

Also Published As

Publication number Publication date
DE3161557D1 (en) 1984-01-05
US4406400A (en) 1983-09-27
EP0048486B1 (fr) 1983-11-30
DE3035925A1 (de) 1982-05-13

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