EP0899522A3 - Device for preventing compressor damage due to oil shortage at very low suction temperatures, particularly for vehicle refrigeration compressors - Google Patents

Device for preventing compressor damage due to oil shortage at very low suction temperatures, particularly for vehicle refrigeration compressors Download PDF

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Publication number
EP0899522A3
EP0899522A3 EP98105427A EP98105427A EP0899522A3 EP 0899522 A3 EP0899522 A3 EP 0899522A3 EP 98105427 A EP98105427 A EP 98105427A EP 98105427 A EP98105427 A EP 98105427A EP 0899522 A3 EP0899522 A3 EP 0899522A3
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EP
European Patent Office
Prior art keywords
ist
compressor
eine
valve
damage due
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.)
Withdrawn
Application number
EP98105427A
Other languages
German (de)
French (fr)
Other versions
EP0899522A2 (en
Inventor
Rudolf Dipl.-Ing. Thomae
Ralph Kerstner
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.)
KERSTNER, RALPH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0899522A2 publication Critical patent/EP0899522A2/en
Publication of EP0899522A3 publication Critical patent/EP0899522A3/en
Withdrawn legal-status Critical Current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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Compressor (AREA)

Abstract

Einrichtung zur Verhinderung von Kompressorschäden, insbesondere bei Kompressoren für Fahrzeugkühlung, durch Ölmangel bei sehr tiefen Ansaugtemperaturen infolge zu hoher Kompressorleistung, die folgende Elemente enthält:

  • a. eine Abzweigung (5) aus der Flüssigkeitsleitung (4) vor dem Einspritzventil (6), welche in ein Magnet-Absperrventil (8) führt, das in stromlosem Zustand geschlossen ist.
  • b. Eine Verbindungsleitung (9) zur Saugleitung (11) nach dem Verdampfer (7). wobei
  • c. die Verbindungsleitung ganz oder teilweise als Drosselorgan (10) ausgebildet ist.
    • Die Drosselwirkung des Drosselorgans (10) ist bei offenem Magnet-Absperrventil derart im Versuch abgestimmt, dass der Ansaugdruck vor dem Kompressor und damit der Kältemittel-Volumenstrom bei maximaler Kompressordrehzahl so hoch ist, dass eine ausreichende Ölversorgung des Kompressors vorhanden ist.
    Figure 00000001
    Device for preventing compressor damage, particularly in the case of compressors for vehicle cooling, due to lack of oil at very low intake temperatures as a result of excessive compressor output, which contains the following elements:
  • a. a branch (5) from the liquid line (4) upstream of the injection valve (6), which leads into a magnetic shut-off valve (8) which is closed when de-energized.
  • b. A connecting line (9) to the suction line (11) after the evaporator (7). in which
  • c. the connecting line is designed entirely or partially as a throttle element (10).
    • The throttle effect of the throttle element (10) is tuned in the experiment when the magnetic shut-off valve is open in such a way that the intake pressure upstream of the compressor and thus the refrigerant volume flow at maximum compressor speed is so high that there is sufficient oil supply to the compressor.
    Figure 00000001
    EP98105427A 1997-08-29 1998-03-25 Device for preventing compressor damage due to oil shortage at very low suction temperatures, particularly for vehicle refrigeration compressors Withdrawn EP0899522A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19737671 1997-08-29
    DE19737671A DE19737671A1 (en) 1997-08-29 1997-08-29 Device for preventing compressor damage, in particular in the case of compressors for vehicle cooling due to a lack of oil at very low intake temperatures

    Publications (2)

    Publication Number Publication Date
    EP0899522A2 EP0899522A2 (en) 1999-03-03
    EP0899522A3 true EP0899522A3 (en) 2000-03-22

    Family

    ID=7840545

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98105427A Withdrawn EP0899522A3 (en) 1997-08-29 1998-03-25 Device for preventing compressor damage due to oil shortage at very low suction temperatures, particularly for vehicle refrigeration compressors

    Country Status (2)

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    EP (1) EP0899522A3 (en)
    DE (1) DE19737671A1 (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN113669784B (en) * 2021-07-12 2022-11-25 浙江中广电器集团股份有限公司 Control method for improving oil shortage of compressor during starting of waterless floor heating unit and triple co-generation system

    Citations (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2258458A (en) * 1938-12-12 1941-10-07 Spoehrer Lange Company Control of refrigerating fluids
    US3014352A (en) * 1959-12-31 1961-12-26 Sporlan Valve Co Refrigeration control with means to limit compressor load
    US3276221A (en) * 1965-02-05 1966-10-04 Ernest W Crumley Refrigeration system
    US4462219A (en) * 1981-05-13 1984-07-31 Tokyo Shibaura Denki Kabushiki Kaisha Refrigeration system
    US4742689A (en) * 1986-03-18 1988-05-10 Mydax, Inc. Constant temperature maintaining refrigeration system using proportional flow throttling valve and controlled bypass loop
    US5076068A (en) * 1989-07-31 1991-12-31 Kkw Kulmbacher Klimagerate-Werk Gmbh Cooling device for a plurality of coolant circuits
    JPH06101911A (en) * 1992-08-26 1994-04-12 Hitachi Ltd Refrigerating cycle using non-azeotropic mixed refrigerant
    US5355697A (en) * 1992-09-17 1994-10-18 Hoshizaki Denki Kabushiki Kaisha Cooling medium circuit for ice making machine etc.
    US5408841A (en) * 1990-12-06 1995-04-25 Nippondenso Co., Ltd. Automotive air conditioner
    EP0685692A2 (en) * 1994-05-30 1995-12-06 Mitsubishi Denki Kabushiki Kaisha Refrigerant circulating system

    Patent Citations (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2258458A (en) * 1938-12-12 1941-10-07 Spoehrer Lange Company Control of refrigerating fluids
    US3014352A (en) * 1959-12-31 1961-12-26 Sporlan Valve Co Refrigeration control with means to limit compressor load
    US3276221A (en) * 1965-02-05 1966-10-04 Ernest W Crumley Refrigeration system
    US4462219A (en) * 1981-05-13 1984-07-31 Tokyo Shibaura Denki Kabushiki Kaisha Refrigeration system
    US4742689A (en) * 1986-03-18 1988-05-10 Mydax, Inc. Constant temperature maintaining refrigeration system using proportional flow throttling valve and controlled bypass loop
    US5076068A (en) * 1989-07-31 1991-12-31 Kkw Kulmbacher Klimagerate-Werk Gmbh Cooling device for a plurality of coolant circuits
    US5408841A (en) * 1990-12-06 1995-04-25 Nippondenso Co., Ltd. Automotive air conditioner
    JPH06101911A (en) * 1992-08-26 1994-04-12 Hitachi Ltd Refrigerating cycle using non-azeotropic mixed refrigerant
    US5355697A (en) * 1992-09-17 1994-10-18 Hoshizaki Denki Kabushiki Kaisha Cooling medium circuit for ice making machine etc.
    EP0685692A2 (en) * 1994-05-30 1995-12-06 Mitsubishi Denki Kabushiki Kaisha Refrigerant circulating system

    Non-Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Title
    PATENT ABSTRACTS OF JAPAN vol. 018, no. 380 (M - 1639) 18 July 1994 (1994-07-18) *

    Also Published As

    Publication number Publication date
    DE19737671A1 (en) 1999-03-04
    EP0899522A2 (en) 1999-03-03

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