EP0246465A1 - Circuit de réfrigérant à compresseur rotatif - Google Patents

Circuit de réfrigérant à compresseur rotatif Download PDF

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Publication number
EP0246465A1
EP0246465A1 EP87106106A EP87106106A EP0246465A1 EP 0246465 A1 EP0246465 A1 EP 0246465A1 EP 87106106 A EP87106106 A EP 87106106A EP 87106106 A EP87106106 A EP 87106106A EP 0246465 A1 EP0246465 A1 EP 0246465A1
Authority
EP
European Patent Office
Prior art keywords
compressor
valve
outlets
refrigerant circuit
circuit
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Withdrawn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
EP87106106A
Other languages
German (de)
English (en)
Inventor
Duilio Beson
Federico Filippetto
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
Zanussi Elettrodomestici SpA
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 Industrie Zanussi SpA, Zanussi Elettrodomestici SpA filed Critical Industrie Zanussi SpA
Publication of EP0246465A1 publication Critical patent/EP0246465A1/fr
Withdrawn legal-status Critical Current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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2511—Evaporator distribution valves

Definitions

  • the present invention relates to a refrigerant circuit for domestic refrigerating apparatus operating at two different temperatures, in particular for a so-called "no frost" refrigerating apparatus of the automatic defrosting type including a rotary compressor.
  • the refrigerant circuit of refrigerating apparatus of this type comprises a compressor (formerly of the reciprocating type exclusively), a condenser, at least one capillary and two evaporators disposed respectively in a storage compartment and a freezer compartment.
  • the two compartments are disposed separately from one another in a cupboard housing and closed by separate doors.
  • the evaporators are preferably interconnected in series, and the refrigerant circuit normally includes a thermostatically controlled valve permitting the flow of the refrigerant to be selectively directed to both evaporators or to the evaporator of the freezer compartment only.
  • Recent developments provide the employ of compressors of the rotary type in domestic refrigerating apparatus having only a single compartment for the cold storage of foods and thus only a single evaporator.
  • the employ of rotary compressors is advantageous from the viewpoint of energy consumption which is reduced by about 5% by comparison to that of corresponding reciprocating compressors.
  • the rotary compressor has the shortcoming of requiring a longer period of time than a reciprocating compressor for attaining the proper operation pressure when the circuit operates under thermostatic control. This is because during inoperative periods of the rotary compressor the refrigerant fluid remaining in the compressor body at a high temperature and high pressure tends to escape towards the evaporator with the resultant equilibration of the pressure in the entire circuit.
  • valve of this type is thus rather complicated, expensive, and above all cannot be adapted to refrigerating apparatus operating at two temperatures, that is, having two evaporators to be supplied in series or selectively.
  • a refrigerant circuit for domestic refrigerating apparatus operating at two temperatures, and in particular with automatic defrosting, said circuit comprising a compressor, a condenser, two evaporators preferably connected in series, and at least one valve for selectively directing the refrigerant fluid to said evaporators, said valve having one inlet and two outlets and being inserted between said condenser and said evaporators, said circuit being characterized in that said compressor is of the rotary type, and said valve comprises two closure members adapted to close both outlets when said compressor is inoperative, and to selectively open one of said two outlets when said compressor is in operation.
  • the refrigerant circuit shown in fig. 1 comprises a compressor 5 which according to the invention is of the rotary type.
  • the outlet of compressor 5 is connected to a condenser 6, the outlet of which is connected to the inlet 8 of a three-way solenoid valve 7.
  • the two outlets 9 and 10 of solenoid valve 7 are connected respectively to two parallel branches of the circuit.
  • a branch connected to outlet 9 comprises a capillary 11 and an evaporator 12 disposed in the cold-storage compartment of the refrigerating apparatus. This compartment is usually to be kept at a temperature of about +5 °C.
  • Another branch connected to outlet 10 comprises a capillary 13 and is connected to the first branch downstream of evaporator 12. Downstream of this connection the circuit includes another evaporator 14 disposed in the freezer compartment of the refrigerating apparatus, which is usually to be kept at a temperature of about -24 °C.
  • valves 7 and 15 are effective to divide the circuit into a high-pressure portion comprising compressor 5 and condenser 6, and a low- pressure portion including the two evaporators 12 and 14.
  • valve 7 in accordance with the invention comprises a tubular body formed with the two outlets 9 and 10 facing in opposite directions, and inlet 8 extending at right angles to outlets 9 and 10. Disposed in the tubular body are two closure members 16 and 17 cooperating with outlets 9 and 10, respectively, and a compression spring 18 inserted therebetween. Associated to each closure member 16, 17 is a respective electromagnetic coil 19, 20.
  • valve 15 and valve 7 and including compressor 5 and condenser 6 contains the refrigerant fluid at relatively high temperature and pressure.
  • solenoid valve 7 is of course solely given by way of example.
  • the control of the valve may in fact be accomplished by an electronic device (e. g. PTC or the like) instead of by electromechanical means, it being understood that such valve be capable of controlling the different operating modes described, and in particular of simultaneously closing both of its outlets.
  • an electronic device e. g. PTC or the like
  • electromechanical means it being understood that such valve be capable of controlling the different operating modes described, and in particular of simultaneously closing both of its outlets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Defrosting Systems (AREA)
EP87106106A 1986-05-20 1987-04-28 Circuit de réfrigérant à compresseur rotatif Withdrawn EP0246465A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4572886 1986-05-20
IT45728/86A IT1192083B (it) 1986-05-20 1986-05-20 Circuito frigorifero con compressore rotativo

Publications (1)

Publication Number Publication Date
EP0246465A1 true EP0246465A1 (fr) 1987-11-25

Family

ID=11257803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106106A Withdrawn EP0246465A1 (fr) 1986-05-20 1987-04-28 Circuit de réfrigérant à compresseur rotatif

Country Status (2)

Country Link
EP (1) EP0246465A1 (fr)
IT (1) IT1192083B (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999032836A1 (fr) * 1997-12-19 1999-07-01 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique
EP0987504A1 (fr) * 1998-09-18 2000-03-22 Kabushiki Kaisha Toshiba Réfrigérateur avec soupape de commutation pour commander l'écoulement du réfrigérant
EP0990862A1 (fr) * 1998-10-02 2000-04-05 Kabushiki Kaisha Toshiba Réfrigérateur-Congélateur avec deux évaporateurs respectivement pour chambres de réfrigération et de congélation
EP1030133A1 (fr) * 1999-02-19 2000-08-23 Ranco Incorporated of Delaware Dispositif de refroidissement avec compartiment de réfrigération et de congélation combiné
EP1182389A1 (fr) 2000-08-18 2002-02-27 Ranco Incorporated of Delaware Procédé et dispositif de commande de vanne électromagnétique
WO2002046668A1 (fr) 2000-12-04 2002-06-13 Zanussi Elettromeccanica S.P.A. Appareil de refrigeration dote de plusieurs compartiments de stockage
EP1176346A3 (fr) * 2000-07-26 2002-11-27 Kabushiki Kaisha Toshiba Vanne actionnée électriquement permettant de sélectionner un passage d'écoulement parmi plusieurs dans un réfrigérateur
WO2007074094A1 (fr) * 2005-12-29 2007-07-05 Arcelik Anonim Sirketi Dispositif de refroidissement
EP2012049A3 (fr) * 2000-12-15 2009-02-25 BSH Bosch und Siemens Hausgeräte GmbH Circuit d'agent de refroidissement et soupape magnétique correspondante
KR101314620B1 (ko) * 2007-05-23 2013-10-07 엘지전자 주식회사 냉장고의 제어방법
WO2017153141A1 (fr) * 2016-03-09 2017-09-14 BSH Hausgeräte GmbH Appareil frigorifique avec compartiment de congélation et circuit de réfrigérant, et procédé de fonctionnement d'un appareil frigorifique
CN108759177A (zh) * 2018-05-09 2018-11-06 青岛海尔股份有限公司 蒸发器总成、具有该总成的冰箱及冰箱化霜控制方法
US10544979B2 (en) 2016-12-19 2020-01-28 Whirlpool Corporation Appliance and method of controlling the appliance

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723128C (de) * 1941-08-31 1942-07-29 Lumophon Werke Bruckner & Star Kuehlanlage
US2333899A (en) * 1934-05-25 1943-11-09 Gen Motors Corp Refrigerating apparatus
GB575440A (en) * 1944-01-27 1946-02-18 Heywood Compressor Company Ltd Improvements in piston and cylinder arrangements for remote control mechanism
US2423386A (en) * 1944-02-21 1947-07-01 Borg Warner Two-temperature refrigerating system
US2481605A (en) * 1944-07-10 1949-09-13 Seeger Refrigerator Co Refrigerator system
US3842860A (en) * 1972-04-04 1974-10-22 Lucifer Sa Three-way valve for fluids
US4242116A (en) * 1977-05-24 1980-12-30 Bosch-Siemens Hausgerate Gmbh Magnetic valve, especially three-way valve as a switching device for multi-temperature cooling apparatus with only one refrigeration machine
EP0061104A2 (fr) * 1981-03-24 1982-09-29 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Dispositif pour l'ajustement d'un écoulement de fluide réfrigérant dans un appareil de production de froid ou de chaleur et système pour régler un tel écoulement de fluide
GB2154722A (en) * 1984-02-24 1985-09-11 Toshiba Kk Refrigerator
EP0165220A2 (fr) * 1984-06-13 1985-12-18 Aktiebolaget Electrolux Dispositif de réfrigération

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2333899A (en) * 1934-05-25 1943-11-09 Gen Motors Corp Refrigerating apparatus
DE723128C (de) * 1941-08-31 1942-07-29 Lumophon Werke Bruckner & Star Kuehlanlage
GB575440A (en) * 1944-01-27 1946-02-18 Heywood Compressor Company Ltd Improvements in piston and cylinder arrangements for remote control mechanism
US2423386A (en) * 1944-02-21 1947-07-01 Borg Warner Two-temperature refrigerating system
US2481605A (en) * 1944-07-10 1949-09-13 Seeger Refrigerator Co Refrigerator system
US3842860A (en) * 1972-04-04 1974-10-22 Lucifer Sa Three-way valve for fluids
US4242116A (en) * 1977-05-24 1980-12-30 Bosch-Siemens Hausgerate Gmbh Magnetic valve, especially three-way valve as a switching device for multi-temperature cooling apparatus with only one refrigeration machine
EP0061104A2 (fr) * 1981-03-24 1982-09-29 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Dispositif pour l'ajustement d'un écoulement de fluide réfrigérant dans un appareil de production de froid ou de chaleur et système pour régler un tel écoulement de fluide
GB2154722A (en) * 1984-02-24 1985-09-11 Toshiba Kk Refrigerator
EP0165220A2 (fr) * 1984-06-13 1985-12-18 Aktiebolaget Electrolux Dispositif de réfrigération

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, section III, Mechanical & General, June 1966, page 9, Derwent Publications Ltd, London, GB; & SU-A-175 363 (G.D. TASHKINOV et al.) 22-05-1963 *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999032836A1 (fr) * 1997-12-19 1999-07-01 BSH Bosch und Siemens Hausgeräte GmbH Appareil frigorifique
EP1394480A3 (fr) * 1998-09-18 2004-08-18 Kabushiki Kaisha Toshiba Réfrigérateur avec soupape de commutation pour commander l'écoulement du réfrigérant vers un passage du réfrigérant
EP0987504A1 (fr) * 1998-09-18 2000-03-22 Kabushiki Kaisha Toshiba Réfrigérateur avec soupape de commutation pour commander l'écoulement du réfrigérant
US6253561B1 (en) 1998-09-18 2001-07-03 Kabushiki Kaisha Toshiba Refrigerator with switching valve switching flow of refrigerant to one of refrigerant passages
EP1394480A2 (fr) * 1998-09-18 2004-03-03 Toshiba Corporation Réfrigérateur avec soupape de commutation pour commander l'écoulement du réfrigérant vers un passage du réfrigérant
EP0990862A1 (fr) * 1998-10-02 2000-04-05 Kabushiki Kaisha Toshiba Réfrigérateur-Congélateur avec deux évaporateurs respectivement pour chambres de réfrigération et de congélation
US6185948B1 (en) 1998-10-02 2001-02-13 Kabushiki Kaisha Toshiba Refrigerator freezer with two evaporators for respective refrigerating and freezing compartments
EP1030133A1 (fr) * 1999-02-19 2000-08-23 Ranco Incorporated of Delaware Dispositif de refroidissement avec compartiment de réfrigération et de congélation combiné
WO2000049344A1 (fr) * 1999-02-19 2000-08-24 Ranco Incorporated Of Delaware Appareil frigorifique combinant un compartiment refrigerateur et un compartiment congelateur
EP1176346A3 (fr) * 2000-07-26 2002-11-27 Kabushiki Kaisha Toshiba Vanne actionnée électriquement permettant de sélectionner un passage d'écoulement parmi plusieurs dans un réfrigérateur
EP1182389A1 (fr) 2000-08-18 2002-02-27 Ranco Incorporated of Delaware Procédé et dispositif de commande de vanne électromagnétique
WO2002046668A1 (fr) 2000-12-04 2002-06-13 Zanussi Elettromeccanica S.P.A. Appareil de refrigeration dote de plusieurs compartiments de stockage
EP2012049A3 (fr) * 2000-12-15 2009-02-25 BSH Bosch und Siemens Hausgeräte GmbH Circuit d'agent de refroidissement et soupape magnétique correspondante
WO2007074094A1 (fr) * 2005-12-29 2007-07-05 Arcelik Anonim Sirketi Dispositif de refroidissement
KR101314620B1 (ko) * 2007-05-23 2013-10-07 엘지전자 주식회사 냉장고의 제어방법
WO2017153141A1 (fr) * 2016-03-09 2017-09-14 BSH Hausgeräte GmbH Appareil frigorifique avec compartiment de congélation et circuit de réfrigérant, et procédé de fonctionnement d'un appareil frigorifique
US10544979B2 (en) 2016-12-19 2020-01-28 Whirlpool Corporation Appliance and method of controlling the appliance
CN108759177A (zh) * 2018-05-09 2018-11-06 青岛海尔股份有限公司 蒸发器总成、具有该总成的冰箱及冰箱化霜控制方法

Also Published As

Publication number Publication date
IT1192083B (it) 1988-03-31
IT8645728A0 (it) 1986-05-20

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Inventor name: FILIPPETTO, FEDERICO