EP0246465A1 - Kältemittelkreislauf mit Drehverdichter - Google Patents

Kältemittelkreislauf mit Drehverdichter Download PDF

Info

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Withdrawn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
English (en)
French (fr)
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/de
Withdrawn legal-status Critical Current

Links

Images

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 Kältemittelkreislauf mit Drehverdichter Withdrawn EP0246465A1 (de)

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 (de) 1987-11-25

Family

ID=11257803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106106A Withdrawn EP0246465A1 (de) 1986-05-20 1987-04-28 Kältemittelkreislauf mit Drehverdichter

Country Status (2)

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

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999032836A1 (de) * 1997-12-19 1999-07-01 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät
EP0987504A1 (de) * 1998-09-18 2000-03-22 Kabushiki Kaisha Toshiba Schaltventil für Kühlgerät zur Steuerung der Kühlmittelströmung
EP0990862A1 (de) * 1998-10-02 2000-04-05 Kabushiki Kaisha Toshiba Kühl-/Tiefkühlgerät mit zwei Verdampfern für jeweils Kühl- und Gefrierraum
EP1030133A1 (de) * 1999-02-19 2000-08-23 Ranco Incorporated of Delaware Kühl- und Gefrierfach kombinierende Kühlvorrichtung
EP1182389A1 (de) 2000-08-18 2002-02-27 Ranco Incorporated of Delaware Elektromagnetisches Ventilsteuerverfahren und Steuergerät
WO2002046668A1 (en) 2000-12-04 2002-06-13 Zanussi Elettromeccanica S.P.A. Refrigeration appliance with a plurality of storage compartments
EP1176346A3 (de) * 2000-07-26 2002-11-27 Kabushiki Kaisha Toshiba Elektrisch angetriebenes Ventil zum Wählen einer von mehreren Durchflussöffnungen in einem Kältekreislauf
WO2007074094A1 (en) * 2005-12-29 2007-07-05 Arcelik Anonim Sirketi A cooling device
EP2012049A3 (de) * 2000-12-15 2009-02-25 BSH Bosch und Siemens Hausgeräte GmbH Kältemittelkreislauf und Magnetventil dafür
KR101314620B1 (ko) * 2007-05-23 2013-10-07 엘지전자 주식회사 냉장고의 제어방법
WO2017153141A1 (de) * 2016-03-09 2017-09-14 BSH Hausgeräte GmbH Kältegerät mit einem gefrierfach und einem kältemittelkreis und verfahren zum betrieb eines kältegeräts
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 (de) * 1981-03-24 1982-09-29 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Einrichtung zum Einstellen des Kältemittelstromes in einer Vorrichtung zum Kühlen oder Erwärmen und Verfahren zum Regeln eines solchen Kältemittelstromes
GB2154722A (en) * 1984-02-24 1985-09-11 Toshiba Kk Refrigerator
EP0165220A2 (de) * 1984-06-13 1985-12-18 Aktiebolaget Electrolux Kühlvorrichtung

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 (de) * 1981-03-24 1982-09-29 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Einrichtung zum Einstellen des Kältemittelstromes in einer Vorrichtung zum Kühlen oder Erwärmen und Verfahren zum Regeln eines solchen Kältemittelstromes
GB2154722A (en) * 1984-02-24 1985-09-11 Toshiba Kk Refrigerator
EP0165220A2 (de) * 1984-06-13 1985-12-18 Aktiebolaget Electrolux Kühlvorrichtung

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 (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999032836A1 (de) * 1997-12-19 1999-07-01 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät
EP1394480A3 (de) * 1998-09-18 2004-08-18 Kabushiki Kaisha Toshiba Kühlgerät mit Schaltventil zur Steuerung der Kältemittelströmung zu einer Kältemittelleitung
EP0987504A1 (de) * 1998-09-18 2000-03-22 Kabushiki Kaisha Toshiba Schaltventil für Kühlgerät zur Steuerung der Kühlmittelströmung
US6253561B1 (en) 1998-09-18 2001-07-03 Kabushiki Kaisha Toshiba Refrigerator with switching valve switching flow of refrigerant to one of refrigerant passages
EP0990862A1 (de) * 1998-10-02 2000-04-05 Kabushiki Kaisha Toshiba Kühl-/Tiefkühlgerät mit zwei Verdampfern für jeweils Kühl- und Gefrierraum
US6185948B1 (en) 1998-10-02 2001-02-13 Kabushiki Kaisha Toshiba Refrigerator freezer with two evaporators for respective refrigerating and freezing compartments
EP1030133A1 (de) * 1999-02-19 2000-08-23 Ranco Incorporated of Delaware Kühl- und Gefrierfach kombinierende Kühlvorrichtung
WO2000049344A1 (en) * 1999-02-19 2000-08-24 Ranco Incorporated Of Delaware Refrigerator appliance combining a fridge compartment and a freezer compartment
EP1176346A3 (de) * 2000-07-26 2002-11-27 Kabushiki Kaisha Toshiba Elektrisch angetriebenes Ventil zum Wählen einer von mehreren Durchflussöffnungen in einem Kältekreislauf
EP1182389A1 (de) 2000-08-18 2002-02-27 Ranco Incorporated of Delaware Elektromagnetisches Ventilsteuerverfahren und Steuergerät
WO2002046668A1 (en) 2000-12-04 2002-06-13 Zanussi Elettromeccanica S.P.A. Refrigeration appliance with a plurality of storage compartments
EP2012049A3 (de) * 2000-12-15 2009-02-25 BSH Bosch und Siemens Hausgeräte GmbH Kältemittelkreislauf und Magnetventil dafür
WO2007074094A1 (en) * 2005-12-29 2007-07-05 Arcelik Anonim Sirketi A cooling device
KR101314620B1 (ko) * 2007-05-23 2013-10-07 엘지전자 주식회사 냉장고의 제어방법
WO2017153141A1 (de) * 2016-03-09 2017-09-14 BSH Hausgeräte GmbH Kältegerät mit einem gefrierfach und einem kältemittelkreis und verfahren zum betrieb eines kältegeräts
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

Similar Documents

Publication Publication Date Title
EP0583905B1 (de) Doppelverdampfer-Kühlschrank mit sequentiellem Verdichterbetrieb
CA1240165A (en) Low-temperature showcase
CA2011741C (en) Transport refrigeration system having means for enhancing the capacity of a heating cycle
EP2228612B1 (de) Kälteanlage
CA2108342C (en) Method for sequentially operating refrigeration system with multiple evaporators
EP0246465A1 (de) Kältemittelkreislauf mit Drehverdichter
US2526379A (en) Defrosting arrangement for refrigerating systems
KR950702018A (ko) 냉동장치의 운전제어장치
US4748818A (en) Transport refrigeration system having means for enhancing the capacity of a heating cycle
JPH0417333B2 (de)
US5157943A (en) Refrigeration system including capillary tube/suction line heat transfer
EP0676601B1 (de) Klimaanlage mit einer vorrichtung zur betriebssteuerung
US2791099A (en) Control system for multi-temperature refrigerators
US2907181A (en) Hot gas defrosting refrigerating system
US4327558A (en) Unloadable transport refrigeration unit control
US3559421A (en) Refrigeration defrost system with receiver heat source
GB1591693A (en) Refrigerator-freezer
JP2000304397A (ja) 冷温蔵装置
EP0485147A1 (de) Kühlsystem
JPH09318205A (ja) 冷凍装置
CA2473768A1 (en) Refrigeration system configuration for air defrost and method
US2895307A (en) Refrigerating system including a hot gas defrosting circuit
KR19980083062A (ko) 에어컨과 냉장고의 통합 냉동장치
JP4333586B2 (ja) 冷凍サイクル装置およびその制御方法
JP2003139459A (ja) 冷蔵庫

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE ES FR GB IT LI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: INDUSTRIE ZANUSSI S.P.A.

17P Request for examination filed

Effective date: 19880329

17Q First examination report despatched

Effective date: 19881124

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890405

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BESON, DUILIO

Inventor name: FILIPPETTO, FEDERICO