EP0156962B1 - Soupape de détente - Google Patents

Soupape de détente Download PDF

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Publication number
EP0156962B1
EP0156962B1 EP84113580A EP84113580A EP0156962B1 EP 0156962 B1 EP0156962 B1 EP 0156962B1 EP 84113580 A EP84113580 A EP 84113580A EP 84113580 A EP84113580 A EP 84113580A EP 0156962 B1 EP0156962 B1 EP 0156962B1
Authority
EP
European Patent Office
Prior art keywords
tappet
valve
diaphragm
plunger
valve according
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
EP84113580A
Other languages
German (de)
English (en)
Other versions
EP0156962A1 (fr
Inventor
Rudibert Dipl.-Ing. Götzenberger
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.)
Ernst Flitsch GmbH and Co
Original Assignee
Ernst Flitsch GmbH and Co
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 Ernst Flitsch GmbH and Co filed Critical Ernst Flitsch GmbH and Co
Publication of EP0156962A1 publication Critical patent/EP0156962A1/fr
Application granted granted Critical
Publication of EP0156962B1 publication Critical patent/EP0156962B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
    • F25B41/335—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant via diaphragms

Definitions

  • the invention relates to a valve with the features specified in the preamble of claim 1, which for installation in a compressor consisting of a compressor, condenser and evaporator. medium circulation is determined.
  • a valve which has the aforementioned construction is known from DE-C-976 465. With this valve, the movement of which is caused by the pressure of the flow medium and which is used, for example, in washing machines, short closing times are to be achieved and the occurrence of water hammer is to be prevented.
  • This valve is not suitable for metering the liquid refrigerant injected into an evaporator of a refrigerant circuit or for solving the problems on which the invention is based.
  • thermostatic expansion valves are usually used, such as those used for.
  • B. DE-A-2 932 906 shows that are controlled by means of a temperature sensor attached to the evaporator outlet and containing a vapor-forming liquid in such a way that the vapor pressure of the filling medium of the temperature sensor acts on the control head of the expansion valve, the desired being achieved by means of an overheating spring Overheating is set at the evaporator outlet.
  • thermostatic expansion valves have some disadvantages. Since the valves have to be adapted to the refrigerant used in each case, this necessitates the provision of a corresponding number of functionally similar devices or the provision of devices with exchangeable nozzles of different sizes. In addition, with such valves the time constant, which is dependent on the dimensions of the diaphragm or corrugated tube diameter, the spring hardness of the overheating spring, the selected nozzle size and the filling medium of the control system, can no longer be changed in a finished valve.
  • the invention has for its object to provide an expansion valve of the aforementioned type, which does not have the disadvantages mentioned, does not require a capillary tube for connecting the temperature sensor to the control head of the valve and enables remote monitoring of the functional sequence during operation.
  • valve according to the invention both the smallest and the greatest outputs can be controlled properly, regardless of the refrigerant used, gas-filled components which are exposed to the risk of leakage are eliminated, and the interchangeability of the electrical parts ensures a longer service life.
  • the valve body 1 has an inlet 2 for the refrigerant which receives the suction line and an outlet 3 to which the line leading to the evaporator is connected.
  • a sleeve 4 forming the valve seat 41, through which the valve tappet 5 is guided.
  • the cooperating with the valve seat 41 is formed by a plastic washer 6 which comprises the valve tappet 5 and on the one hand rests against an annular shoulder formed on the valve tappet and on the other hand against an O-ring which is arranged in a recess in an annular body 7 whose shoulder the ring flange of a sleeve 9 receiving a filter and against whose ring flange a coil spring 8 rests, which is supported on an abutment ring 10 which can be moved in the longitudinal direction of the valve by means of an Allen screw 11 engaging in a thread cut into the valve body 1 .
  • the plunger 5 has a capillary bore 51 and at its upper end an annular shoulder 52 which bears against the membrane 12 and a pin-shaped end 53 which extends through an axial recess in the membrane 12 and has a reduced diameter and which has the end face of a plunger movable in the longitudinal direction of the valve 14 is opposite.
  • the end face of the annular shoulder 52 of the plunger 5 has a recess, from which notches or openings 54 penetrating the casing of the plunger 5 extend, which open into a channel 31 leading to the outlet 3.
  • the plunger is tapered in order to achieve a tension-proportional stroke of the plunger.
  • a retaining spring 21 against the upper end face of the plunger, the abutment of which is formed by a screw bolt 18 rigidly connected to the guide sleeve 15, onto which a crown nut 19 is screwed between the annular end face and the upper end plate of the housing 17 accommodating the magnet coil 16, a sealing ring 20 is arranged.
  • FIG. 1 Embodiment modified in such a way that the flow direction of the refrigerant is reversed and the refrigerant flows from the area 3 through a radial bore provided in the plunger 5 directly into the capillary bore 51 of the plunger 5.
  • the capillary bore 51 is closed at the lower end of the plunger 5, and the arrangement of the filter 9 can be dispensed with.
  • a screen acting as a filter can be inserted into the capillary bore 51.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)
  • Magnetically Actuated Valves (AREA)

Claims (7)

1. Soupape comprenant un poussoir (5) qui, commandé par voie hydropneumatique par une membrane (12) et présentant une forure capillaire axiale (51), traverse la membrane (12), avec son extrémité (53) de plus petit diamètre opposée au siège de soupape (41), dans un évidement axial et prend appui avec un épaulement (52) contre la membrane (12) et un piston plongeur (14) qui, monté à l'intérieur d'une bobine d'électroaimant (16) susceptible d'être excitée par un capteur et agissant sur le poussoir de soupape (5), opère la fermeture et l'ouverture de la forure capillaire (51), caractérisée en ce que la soupape est réalisée en tant que soupape de détente pour injecter un fluide de refroidissement dans l'évaporateur d'une installation frigorifique, en ce qu'il existe entre l'extrémité (53) du poussoir de soupape et la membrane (12) une fente annulaire (13) et en ce que la face frontale formant l'épaulement (52) du poussoir de soupape (5) présente une cavité qui, par l'intermédiaire de la fente annulaire (13) formée par l'évidement axial de la membrane (12), est en communication avec la chambre de commande située au-dessus de la membrane (12) et, par l'intermédiaire de passages (54) dans le poussoir de soupape (5) ainsi que d'un canal (31 avec la canalisation conduisant à l'évaporateur.
2. Soupape selon la revendication 1, caractérisée en ce que l'extrémité du piston plongeur (14) située du côté opposé à la membrane (12) présente un rétrécissement conique.
3. Soupape selon la revendication 1 ou 2, caractérisée en ce que sur le côté frontal du carter (17) enfermant la bobine d'électroaimant (16) est monté un ressort (21) exerçant une pression sur le piston plongeur (14).
4. Soupape selon l'une quelconque des revendications précédentes, caractérisée en ce que dans le corps de soupape (1) présentant une entrée (2) et une sortie (3) pour le fluide de refroidissement est monté un ressort (8) exerçant une pression sur le poussoir de soupape (5).
5. Soupape selon l'une quelconque des revendications précédentes, caractérisée en ce que le siège de soupape (41) est formé par la face frontale d'une douille (4) traversée par le poussoir de soupape (5), et un obturateur coopérant avec le siège de soupape est formé d'un disque annulaire (6) en matière synthétique qui prend appui contre un épaulement annulaire du poussoir de soupape (5).
6. Soupape selon l'une quelconque des revendications précédentes, caractérisée en ce que devant l'orifice inférieur de la forure capillaire (51) du poussoir de soupape (5) est monté un filtre (9) entouré par une douille.
7. Soupape selon l'une quelconque des revendications précédentes, caractérisée en ce que sur la face frontale du piston plongeur (14) située en regard de l'extrémité (53) du poussoir de soupape qui traverse la membrane (12) est monté un disque (22) en matière souple.
EP84113580A 1983-12-12 1984-11-10 Soupape de détente Expired EP0156962B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3344816 1983-12-12
DE19833344816 DE3344816A1 (de) 1983-12-12 1983-12-12 Expansionsventil

Publications (2)

Publication Number Publication Date
EP0156962A1 EP0156962A1 (fr) 1985-10-09
EP0156962B1 true EP0156962B1 (fr) 1988-03-23

Family

ID=6216673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113580A Expired EP0156962B1 (fr) 1983-12-12 1984-11-10 Soupape de détente

Country Status (7)

Country Link
US (1) US4606199A (fr)
EP (1) EP0156962B1 (fr)
JP (1) JPS60140074A (fr)
BR (1) BR8406334A (fr)
DE (2) DE3344816A1 (fr)
DK (1) DK591184A (fr)
ES (1) ES283335Y (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4852364A (en) * 1987-10-23 1989-08-01 Sporlan Valve Company Expansion and check valve combination
BR8804215A (pt) * 1988-08-12 1990-03-27 Brasil Compressores Sa Valvula de bloqueio para sistemas de refrigeracao ou de ar condicionado
DE3829101A1 (de) * 1988-08-27 1990-03-01 Sueddeutsche Kuehler Behr Thermostatisches expansionsventil
US4928494A (en) * 1988-12-20 1990-05-29 American Standard Inc. Incremental electrically actuated valve
DE3922591A1 (de) * 1989-07-10 1991-01-24 Danfoss As Servogesteuertes expansionsventil fuer ein leicht verdampfbares fluid
US4986085A (en) * 1989-09-12 1991-01-22 American Standard Inc. Incremental electrically actuated valve
EP0689015A1 (fr) * 1994-06-21 1995-12-27 Staefa Control System Scs Ag Vanne de régulation avec servo-entraînement
US6418741B1 (en) 2000-05-03 2002-07-16 Parker Hannifin Corporation Expansion/check valve assembly including a reverse flow rate adjustment device
CN101988587A (zh) * 2009-08-06 2011-03-23 北京菁华昱创节能设备有限公司 多功能控制阀门
US20150052924A1 (en) * 2013-08-22 2015-02-26 Standard Motor Products, Inc. Thermal Expansion Valve with Power Element
CN104482274B (zh) * 2014-10-28 2016-09-14 珠海格力电器股份有限公司 电子膨胀阀
US10993546B2 (en) * 2016-10-28 2021-05-04 Sleep Number Corporation Noise reducing plunger
US11832728B2 (en) 2021-08-24 2023-12-05 Sleep Number Corporation Controlling vibration transmission within inflation assemblies

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2506428A1 (de) * 1974-02-19 1975-08-21 Aeroquip Corp Automatische bremsspieleinstell- vorrichtung
US3997035A (en) * 1975-09-02 1976-12-14 Borg-Warner Corporation Automatic slack adjuster for vehicle brakes
US3997036A (en) * 1975-09-09 1976-12-14 Borg-Warner Corporation Automatic brake slack adjuster
DE2632331A1 (de) * 1975-07-25 1977-02-17 Midland Ross Corp Selbsttaetige einstellvorrichtung fuer bremsen
GB2087012A (en) * 1980-07-21 1982-05-19 Kelsey Hayes Co Slack adjuster

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2305151A (en) * 1940-08-27 1942-12-15 George C Fields Valve
DE734571C (de) * 1942-04-23 1943-04-19 Erich Herion Einspritzventil fuer Kaelteanlagen
DE976465C (de) * 1954-02-07 1963-09-26 A U K Mueller Fa Ventil, dessen Bewegung durch den Druck des Durchflussmediums bewirkt wird
CH355995A (de) * 1957-10-30 1961-07-31 Seitz Eugen Servobetätigtes Ventil
US3079952A (en) * 1959-12-28 1963-03-05 Jackes Evans Mfg Company Valve
DE1270909B (de) * 1965-07-24 1968-06-20 Danfoss As Magnetventil fuer Gase
DD128033A1 (de) * 1976-08-30 1977-10-26 Konrad Albrecht Thermostatisches regelventil
FR2404786A1 (fr) * 1977-09-28 1979-04-27 Boulogne Ste Indle Vanne electromagnetique pour circuits de fluides contenant des impuretes
DE2810211A1 (de) * 1978-03-09 1979-09-20 Bosch Gmbh Robert Heizwassersteuerventil fuer eine kraftfahrzeug-heizungsanlage
DE2932906A1 (de) * 1979-08-14 1981-02-26 Flitsch E Gmbh & Co Druckkompensiertes expansionsventil
US4448038A (en) * 1979-10-01 1984-05-15 Sporlan Valve Company Refrigeration control system for modulating electrically-operated expansion valves
US4310142A (en) * 1980-03-13 1982-01-12 Tom Mcguane Industries, Inc. Fuel pressure regulator assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2506428A1 (de) * 1974-02-19 1975-08-21 Aeroquip Corp Automatische bremsspieleinstell- vorrichtung
DE2632331A1 (de) * 1975-07-25 1977-02-17 Midland Ross Corp Selbsttaetige einstellvorrichtung fuer bremsen
US3997035A (en) * 1975-09-02 1976-12-14 Borg-Warner Corporation Automatic slack adjuster for vehicle brakes
US3997036A (en) * 1975-09-09 1976-12-14 Borg-Warner Corporation Automatic brake slack adjuster
GB2087012A (en) * 1980-07-21 1982-05-19 Kelsey Hayes Co Slack adjuster

Also Published As

Publication number Publication date
ES283335Y (es) 1986-01-01
DK591184D0 (da) 1984-12-11
JPS60140074A (ja) 1985-07-24
US4606199A (en) 1986-08-19
BR8406334A (pt) 1985-10-08
ES283335U (es) 1985-05-16
DE3344816A1 (de) 1985-06-20
DK591184A (da) 1985-06-13
EP0156962A1 (fr) 1985-10-09
DE3470094D1 (en) 1988-04-28

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