EP0021202B1 - Thermostatisches Expansionsventil - Google Patents

Thermostatisches Expansionsventil Download PDF

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Publication number
EP0021202B1
EP0021202B1 EP80103170A EP80103170A EP0021202B1 EP 0021202 B1 EP0021202 B1 EP 0021202B1 EP 80103170 A EP80103170 A EP 80103170A EP 80103170 A EP80103170 A EP 80103170A EP 0021202 B1 EP0021202 B1 EP 0021202B1
Authority
EP
European Patent Office
Prior art keywords
cup
shaped body
valve
corrugated tube
expansion valve
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
EP80103170A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0021202A1 (de
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 EP0021202A1 publication Critical patent/EP0021202A1/de
Application granted granted Critical
Publication of EP0021202B1 publication Critical patent/EP0021202B1/de
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
    • 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
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06—Details of flow restrictors or expansion valves
    • F25B2341/068—Expansion valves combined with a sensor
    • F25B2341/0683—Expansion valves combined with a sensor the sensor is disposed in the suction line and influenced by the temperature or the pressure of the suction gas

Definitions

  • the invention relates to a thermostatic expansion valve for installation in a refrigerant circuit consisting of a compressor, condenser and evaporator, with an expansion chamber acting on the valve stem and filled with a temperature-sensitive control medium and with a passage through which the suction gas flows, into which the valve stem protrudes, the temperature of the Suction gases affect the movement of the expansion chamber.
  • a valve tappet projecting into the return duct for the refrigerant is provided, which has a blind hole in communication with the membrane chamber, in order to enable condensation of the filling located in the membrane chamber in the space through which the refrigerant flows, so that this filling responds to the temperature of the back-flowing refrigerant (DE-A 2 001 713).
  • control takes place as a function of the temperature and pressure conditions prevailing in the channel through which the suction gas flows, in that the portion of the suction gas channel receiving the valve tappet is connected to a chamber delimited by the membrane, so that the temperature of the in the Suction channel flowing refrigerant acts on the outer surface of the membrane delimiting the membrane chamber.
  • Thermostatic valves of this type have a very high response speed and, consequently, an oscillating mode of operation.
  • the part of the valve stem protruding into the suction channel is enclosed by a sleeve made of cold-resistant plastic of low thermal conductivity in the latter expansion valve.
  • the invention has for its object to effect the damping of the valve stem movements in expansion valves of the aforementioned type in a structurally simple manner.
  • the suction line is advantageously connected to the chamber receiving the corrugated pipe via a wide annular channel.
  • the cover closing the expansion valve on the front side has a bore which is closed by means of a sealing washer which resiliently rests against the inside of the cover is held.
  • the pressure acting on this sealing washer is exerted by a spring washer resting against the bottom of the cup-shaped body or a bow spring arranged on the bottom of this body.
  • an embodiment of the expansion valve according to the invention is shown in a schematic manner.
  • an inlet 1 and an outlet 2 are provided for receiving a threaded connector each connected to the suction line.
  • Two further threaded recesses 3 and 4 are used to connect the line starting from the condenser or leading to the evaporator.
  • the valve tappet 6 is guided in a sleeve 5 inserted into the housing.
  • the upper end of the plunger lies with the interposition of a cup-shaped part against the bottom of the cup-shaped body 8, which is enclosed in its upper thick-walled area by the corrugated tube 9, which has the lower end with the annular shoulder 82 of the cup-shaped body and with its upper end is soldered to a plate 10 which covers the end of the valve housing.
  • This cover plate has a bore 101 which is closed by means of a sealing washer 11 which is pressed against the cover plate 10 by the spring washer 16. With its thin-walled free edge region 81, the cup-shaped body 8 projects into the part of the suction line located between the inlet 1 and the outlet 2.
  • a spherical valve body 12 is arranged, which bears against the valve seat 13, which is held by the upper heating spring 14, the tension of which can be adjusted by means of the threaded nipple 15.
  • a filling probe having a transverse slot at its lower end is introduced into the bore and the sealing disk 101 is pressed down by means of the latter. In this way, the filling process can be carried out in a significantly shorter time than with known expansion valves.
  • the bore 101 can also be glued or soldered.

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)
  • Valve Housings (AREA)
EP80103170A 1979-06-06 1980-06-06 Thermostatisches Expansionsventil Expired EP0021202B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792922872 DE2922872A1 (de) 1979-06-06 1979-06-06 Thermostatisches expansionsventil
DE2922872 1979-06-06

Publications (2)

Publication Number Publication Date
EP0021202A1 EP0021202A1 (de) 1981-01-07
EP0021202B1 true EP0021202B1 (de) 1983-11-23

Family

ID=6072567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103170A Expired EP0021202B1 (de) 1979-06-06 1980-06-06 Thermostatisches Expansionsventil

Country Status (6)

Country Link
US (1) US4344566A (da)
EP (1) EP0021202B1 (da)
JP (1) JPS55163379A (da)
BR (1) BR8003484A (da)
DE (2) DE2922872A1 (da)
DK (1) DK241080A (da)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819443A (en) * 1987-06-30 1989-04-11 Fujikoki America, Inc. Expansion valve
JP3305039B2 (ja) * 1993-04-22 2002-07-22 株式会社不二工機 温度膨脹弁
JP3637651B2 (ja) * 1995-03-22 2005-04-13 株式会社デンソー 温度式膨張弁
FR2743139B1 (fr) * 1995-12-27 1998-02-13 Valeo Climatisation Detendeur thermostatique pour appareil de climatisation, en particulier de vehicule automobile
JPH10288424A (ja) * 1997-04-11 1998-10-27 Fuji Koki Corp 温度式膨張弁
JP2000016068A (ja) * 1998-07-08 2000-01-18 Sanden Corp 温度自動膨張弁
DE102004057320A1 (de) * 2004-11-27 2006-06-01 Karl-Heinz Best Verfahren und Vorrichtung zum Überwachen wenigstens einer Windenergieanlage
CN109519576B (zh) * 2019-01-04 2024-07-19 上海金鋆制冷控制器有限公司 一种水量压力调节阀

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075646B (de) * 1960-02-18 Klemenz Stutt gart Mohrmgcn Rudolf Thermostatisches Em spritzventil fur Kälteanlagen
US1904991A (en) * 1929-02-28 1933-04-25 Frigidaire Corp Refrigerating apparatus
US1969574A (en) * 1931-11-17 1934-08-07 Robertshaw Thermostat Co Thermostat bellows assembly
FR806476A (fr) * 1935-03-18 1936-12-17 Valve à expansion pour machines frigorifiques
US2463951A (en) * 1945-05-25 1949-03-08 Detroit Lubricator Co Refrigeration expansion valve
US2639726A (en) * 1947-06-14 1953-05-26 Standard Thompson Corp Apparatus for controlling the pressure in liquid containers
DE926369C (de) * 1953-03-04 1955-04-14 Erich Herion Wasserregelungsventil fuer Kaeltemaschinen
US2949128A (en) * 1956-12-10 1960-08-16 American Radiator & Standard Valve
US3111816A (en) * 1958-11-07 1963-11-26 Alco Valve Co Thermostatic expansion valve with compound pressure regulating override
US3014351A (en) * 1960-03-16 1961-12-26 Sporlan Valve Co Refrigeration system and control
US3119559A (en) * 1962-08-20 1964-01-28 Gen Motors Corp Thermostatic expansion and suction line valve
US3537645A (en) * 1969-01-16 1970-11-03 Controls Co Of America Bulbless expansion valve
GB1232366A (da) * 1970-03-24 1971-05-19

Also Published As

Publication number Publication date
DE2922872A1 (de) 1980-12-11
DK241080A (da) 1980-12-07
BR8003484A (pt) 1981-01-05
DE3065671D1 (en) 1983-12-29
EP0021202A1 (de) 1981-01-07
US4344566A (en) 1982-08-17
JPS55163379A (en) 1980-12-19

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