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EP1738119B1 - A cooling device and control method - Google Patents

A cooling device and control method Download PDF

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Publication number
EP1738119B1
EP1738119B1 EP05708866A EP05708866A EP1738119B1 EP 1738119 B1 EP1738119 B1 EP 1738119B1 EP 05708866 A EP05708866 A EP 05708866A EP 05708866 A EP05708866 A EP 05708866A EP 1738119 B1 EP1738119 B1 EP 1738119B1
Authority
EP
European Patent Office
Prior art keywords
compressor
solenoid valve
refrigerant
stop state
suction
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 - Lifetime
Application number
EP05708866A
Other languages
German (de)
French (fr)
Other versions
EP1738119A1 (en
Inventor
Yalcin Guldali
Serdar Kocaturk
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP1738119A1 publication Critical patent/EP1738119A1/en
Application granted granted Critical
Publication of EP1738119B1 publication Critical patent/EP1738119B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • 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
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
    • 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
    • F25B2600/02—Compressor control
    • F25B2600/026—Compressor control by controlling unloaders
    • F25B2600/0261—Compressor control by controlling unloaders external to the compressor
    • 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
    • F25B2600/2503—Condenser exit valves
    • 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
    • F25B2600/2507—Flow-diverting valves

Definitions

  • This invention relates to a cooling device that includes a cooling circuit which prevents the migration of refrigerant.
  • refrigerant that is under high pressure inside the condenser moves towards the evaporator that has lower pressure; the refrigerant that reaches the evaporator and has a higher temperature rate generates additional cooling load.
  • This process having generated a yield loss is termed as the migration of refrigerant.
  • a solenoid valve is utilized at the inlet of capillary tube; thus, preventing the migration of refrigerant and a control mechanism that establishes the timing between the opening of the solenoid valve and operation of compressor is utilized.
  • the aim of this invention is to realize a cooling device that prevents migration of refrigerant that occurs in the stop state of a compressor and that enhances the compressor start-up at the beginning of operation period that is right after the stop state period.
  • Fig 1 is a perspective representation of a cooling device
  • Fig 2 is a schematic representation of a cooling circuit
  • Fig 3 is a schematic representation of a cooling circuit at an alternative application of the invention.
  • Cooling circuit (9) that achieves the cooling cycle and that is utilized for cooling devices (1) such as refrigerators and air conditioners include a compressor (2); an evaporator (3) that sucks the thermal energy in the environment that is cooled; a condenser (4) that transfers the thermal energy to the outer environment; a capillary tube (5) that expands the refrigerant that leaves the condenser (4) and transfers the refrigerant to the evaporator (3); a preferably two way solenoid valve (6) that prevents migration of refrigerant by blocking the flow in the stop state of compressor (2) and that rests between the condenser (4) and the capillary tube (5); a solenoid valve that prevents reverse flow to the evaporator (3) during the stop state of compressor (2) and that is situated in the compressor (2) suction part; a by-pass line (7) that is located between the solenoid valve (6) and suction part of the compressor (2), that provides the refrigerant blocked during the stop state of the compressor (2) to flow towards the suction part
  • the solenoid valve (6) allows the cooling cycle to sustain by directing the flow towards the capillary tube during the operation period and diverts the flow towards the by-pass line (7) by blocking the flow that runs towards the capillary tube (5) during the compressor (2) stop state.
  • solenoid valve (6) When the compressor (2) is in operation mode, in order to sustain cooling cycle, capillary tube outlet of solenoid valve (6) opens up and by-pass line (7) outlet is blocked. If the solenoid valve (16) opens synchronously as the compressor (2) operates right at the operation period, pressure at the compressor (2) suction part decreases partially until a limit torque value which would achieve the compression function after the initial start-up, is reached and during the stop state although the pressure is brought to equilibrium, a pressure difference occurs between the two parts of the compressor (2); this pressure difference generates a high current during the initial start-up of the compressor (2).
  • the cooling circuit (9) includes a solenoid valve (6) that prevents migration of refrigerant by blocking the flow in the stop state of the compressor (2) and that is situated between the condenser (4) and capillary tube (5); a solenoid valve (16) that prevents reverse flow to the evaporator (3) in the compressor (2) stop state and that is installed at the suction part of the compressor (2); a by-pass line (17) that equilibrates the pressure when solenoid valve (6) is blocked in order to prevent migration of refrigerant and that is equipped between the suction and pumping parts of the compressor (2); a solenoid valve (116) that is designed on the by-pass line (17); and a control mechanism (8) that controls the operation of solenoid valves (6, 16, 116) and compressor (2) ( Figure 3 ).
  • solenoid valve (116) located on the by-pass line (17) opens up and allows for a flow in the direction that is opposite to the pumping direction; thus, pressure is equilibrated.
  • Solenoid valve (16) located at the suction part of the compressor (2) prevents reverse flow to the evaporator (3) by closing.
  • Opening of solenoid valve (16) can be delayed by the control unit (8) for a period that is from the initial start-up of the compressor (2) until the attainment of limit torque rate. Therefore, equilibrated pressure rates reserved during the stop state of the compressor (2) are preserved by the by-pass line (17) until the attainment of limit torque rate and compressor (2) realizes its pressing function and compressor's (2) drawing of high current rates is prevented.
  • the cooling device (1) being the subject of invention, migration of refrigerant that occurs during the stop state of the compressor (2) from the condenser (4) towards the evaporator (3) and that causes yield loss, is prevented; provided that the migration of refrigerant is prevented, pressure between the suction and pumping parts of the compressor (2) are equilibrated, easier start-up of the compressor (2) is achieved and during the initial start-up until the attainment of limit torque rate, drawing of high current rates by the compressor (2) is prevented.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

This invention is related to a cooling device (1) and its control method that prevents the migration of refrigerant occurring in the cooling circuit (9) utilized for devices such as refrigerators and air conditioners, and during the stop state period of the compressor (2), from the condenser (4) towards the evaporator (3) causing a yield loss, at the same time by equilibrating the pressure between the suction and pumping parts of the compressor (2), simplifies the start-up of the compressor (2) and prevents the drawing of high current rates by the compressor (2) during the initial start-up until the limit torque rate.

Description

  • This invention relates to a cooling device that includes a cooling circuit which prevents the migration of refrigerant.
  • In cooling devices such as refrigerators and air conditioners, during the stop state of a compressor, refrigerant that is under high pressure inside the condenser moves towards the evaporator that has lower pressure; the refrigerant that reaches the evaporator and has a higher temperature rate generates additional cooling load. This process having generated a yield loss is termed as the migration of refrigerant. For this reason, for cooling systems, during the stop state of compressor, the path of refrigerant that moves towards the evaporator from the condenser is blocked; thus, migration of refrigerant is prevented; however, unless no other precaution is taken, until the pressure between the condenser and evaporator is brought to equilibrium, due to the high pressure difference between compressor suction and pumping parts, compressor start-up problem occurs at the beginning of operating period that is after the compressor stop state. In order to tackle the compressor start-up problem, although during start-up the equilibrium pressure environment is achieved with applications such as by-pass lines installed between the suction and pumping parts of the compressor, high current is drawn until a limit torque rate in the compressor during the initial seconds of the operating period, is attained.
  • In the United States patents US5088303 and US3722228 and European patent EP0060315 , migration of refrigerant is prevented mechanically through the use of valves.
  • In the United States patents US4735054 and US4790142 , migration of refrigerant is prevented by using an automatically controlled blocking valve in a two way operating heat pump, by initiating a reverse flow valve at the beginning of operating period, pressure between suction and pumping parts is brought to equilibrium and compressor start-up is facilitated.
  • In the United States Patent US5309728 , migration of refrigerant is prevented in an air conditioner including multi evaporators and within a short period after equipment at the inner circuit is stopped, stop state of compressor is prolonged or the compressor is reverse operated and pressure is set to equilibrium by means of a by-pass line between the condenser and emission lines.
  • In the European Patent Application EP0692687 , a solenoid valve is utilized at the inlet of capillary tube; thus, preventing the migration of refrigerant and a control mechanism that establishes the timing between the opening of the solenoid valve and operation of compressor is utilized.
  • The aim of this invention is to realize a cooling device that prevents migration of refrigerant that occurs in the stop state of a compressor and that enhances the compressor start-up at the beginning of operation period that is right after the stop state period.
  • The cooling device realised in order to attain above mentioned aim of the invention is illustrated in the attached figures, where:
  • Fig 1 is a perspective representation of a cooling device,
  • Fig 2 is a schematic representation of a cooling circuit,
  • Fig 3 is a schematic representation of a cooling circuit at an alternative application of the invention.
  • The elements illustrated in the figures are numbered individually as follows.
  • 1. Cooling device
  • 2. Compressor
  • 3. Evaporator
  • 4. Condenser
  • 5. Capillary tube
  • 6, 16, 116 - Solenoid valve
  • 7, 17 - By-pass line
  • 8. Control mechanism
  • 9. Cooling circuit
  • Cooling circuit (9) that achieves the cooling cycle and that is utilized for cooling devices (1) such as refrigerators and air conditioners include a compressor (2); an evaporator (3) that sucks the thermal energy in the environment that is cooled; a condenser (4) that transfers the thermal energy to the outer environment; a capillary tube (5) that expands the refrigerant that leaves the condenser (4) and transfers the refrigerant to the evaporator (3); a preferably two way solenoid valve (6) that prevents migration of refrigerant by blocking the flow in the stop state of compressor (2) and that rests between the condenser (4) and the capillary tube (5); a solenoid valve that prevents reverse flow to the evaporator (3) during the stop state of compressor (2) and that is situated in the compressor (2) suction part; a by-pass line (7) that is located between the solenoid valve (6) and suction part of the compressor (2), that provides the refrigerant blocked during the stop state of the compressor (2) to flow towards the suction part of the compressor (2); thus, setting the equilibrium of the pressure in the suction and pumping parts of the compressor (2); a control mechanism (8) that controls the operation of solenoid valves (6, 16) and the compressor (2) (Figure 2).
  • The solenoid valve (6) allows the cooling cycle to sustain by directing the flow towards the capillary tube during the operation period and diverts the flow towards the by-pass line (7) by blocking the flow that runs towards the capillary tube (5) during the compressor (2) stop state.
  • For the control method of the cooling device (1), in the stop state of the compressor (2), migration of refrigerant occurring towards the evaporator (3) from the condenser (4) is prevented by closing the outlet of capillary tube (5) of solenoid valve (6). At the same time, outlet of by-pass line (7) of the solenoid valve (6) opens up and by diverting the flow towards the suction part of the compressor (2), pressure between the suction and pumping parts of the compressor (2) is brought into equilibrium. Solenoid valve (16) that is situated at the suction part of the compressor (2) closes up and reverse flow to the evaporator (3) is prevented. When the compressor (2) is in operation mode, in order to sustain cooling cycle, capillary tube outlet of solenoid valve (6) opens up and by-pass line (7) outlet is blocked. If the solenoid valve (16) opens synchronously as the compressor (2) operates right at the operation period, pressure at the compressor (2) suction part decreases partially until a limit torque value which would achieve the compression function after the initial start-up, is reached and during the stop state although the pressure is brought to equilibrium, a pressure difference occurs between the two parts of the compressor (2); this pressure difference generates a high current during the initial start-up of the compressor (2). For the application being the subject of invention, when the compressor (2) switches from the operation period from the stop state, opening of solenoid valve (16) is delayed for a period that is the period between the initial start-up of the compressor (2) until the attainment of limit torque rate. Therefore; equilibrated pressure rates reserved in the compressor (2) stop state are sustained when the limit torque rate is achieved and by the moment that the compressor (2) pressing function is initiated by means of a by-pass line (7) and high current rates drawn by a compressor (2) during initial start-up is prevented.
  • At another application of the invention, the cooling circuit (9) includes a solenoid valve (6) that prevents migration of refrigerant by blocking the flow in the stop state of the compressor (2) and that is situated between the condenser (4) and capillary tube (5); a solenoid valve (16) that prevents reverse flow to the evaporator (3) in the compressor (2) stop state and that is installed at the suction part of the compressor (2); a by-pass line (17) that equilibrates the pressure when solenoid valve (6) is blocked in order to prevent migration of refrigerant and that is equipped between the suction and pumping parts of the compressor (2); a solenoid valve (116) that is designed on the by-pass line (17); and a control mechanism (8) that controls the operation of solenoid valves (6, 16, 116) and compressor (2) (Figure 3).
  • At the mentioned application of the invention, in the compressor (2) stop state, as soon as the solenoid valve (6) that is located between the condenser (4) and capillary tube (5) is blocked, solenoid valve (116) located on the by-pass line (17) opens up and allows for a flow in the direction that is opposite to the pumping direction; thus, pressure is equilibrated. Solenoid valve (16) located at the suction part of the compressor (2) prevents reverse flow to the evaporator (3) by closing. When compressor (2) switches to operation mode, in order to sustain cooling cycle, solenoid valve (6) that is between the capillary tube (5) and condenser (4) opens up and solenoid valve (116) located on the by-pass (17) line closes. Opening of solenoid valve (16) can be delayed by the control unit (8) for a period that is from the initial start-up of the compressor (2) until the attainment of limit torque rate. Therefore, equilibrated pressure rates reserved during the stop state of the compressor (2) are preserved by the by-pass line (17) until the attainment of limit torque rate and compressor (2) realizes its pressing function and compressor's (2) drawing of high current rates is prevented.
  • The cooling device (1) being the subject of invention, migration of refrigerant that occurs during the stop state of the compressor (2) from the condenser (4) towards the evaporator (3) and that causes yield loss, is prevented; provided that the migration of refrigerant is prevented, pressure between the suction and pumping parts of the compressor (2) are equilibrated, easier start-up of the compressor (2) is achieved and during the initial start-up until the attainment of limit torque rate, drawing of high current rates by the compressor (2) is prevented.

Claims (3)

  1. A cooling device (1) comprising;
    - A cooling circuit (9) with;
    i. A compressor (2) that realizes the cooling cycle
    ii. An evaporator (3) that sucks the thermal energy in the environment that is cooled;
    iii. A condenser (4) that transfers the thermal energy to the outer environment;
    iv. A capillary tube (5) that expands the refrigerant that leaves the condenser (4) and transfers the refrigerant to the evaporator (3);
    v. A solenoid valve (6) that controls the flow of the refrigerant and that rests between the condenser (4) and the capillary tube (5);
    vi. A by-pass line (7, 17) that equilibrates pressure at the suction and pumping parts of the compressor (2)
    And characterized in that
    - the cooling circuit (9) comprises
    i. A solenoid valve (16) that prevents the reverse flow to the evaporator (3) during the stop state of the compressor (2) and that is located at the suction part of the compressor (2);
    ii. A control mechanism (8) that delays the opening of solenoid valve (16), when the compressor (2) switches from the stop state to the operation mode, for a period that is the period between the initial start-up of the compressor (2) until the attainment of the limit torque rate.
  2. A cooling device (1) as in Claim 1, characterized by;
    - A cooling circuit (9) comprising;
    i. A by-pass line (7) that is located between the solenoid valve (6) and suction part of the compressor (2) and that provides the refrigerant blocked during the stop state of the compressor (2) to flow towards the suction part of the compressor (2); thus, setting the equilibrium of the pressure in the suction and pumping parts of the compressor (2).
  3. A cooling device (1) as in Claim 1, characterized by;
    - A cooling circuit (9) comprising;
    i. A by-pass line (17) that equilibrates the pressure when solenoid valve (6) is blocked in order to prevent migration of refrigerant and that is equipped between the suction and pumping parts of the compressor (2);
    ii. A solenoid valve (116) that is designed on the by-pass line (17);
EP05708866A 2004-03-01 2005-02-28 A cooling device and control method Expired - Lifetime EP1738119B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200400382 2004-03-01
PCT/IB2005/050721 WO2005088212A1 (en) 2004-03-01 2005-02-28 A cooling device and control method

Publications (2)

Publication Number Publication Date
EP1738119A1 EP1738119A1 (en) 2007-01-03
EP1738119B1 true EP1738119B1 (en) 2010-03-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05708866A Expired - Lifetime EP1738119B1 (en) 2004-03-01 2005-02-28 A cooling device and control method

Country Status (6)

Country Link
EP (1) EP1738119B1 (en)
AT (1) ATE462942T1 (en)
DE (1) DE602005020264D1 (en)
RU (1) RU2347985C2 (en)
TR (1) TR200604629T1 (en)
WO (1) WO2005088212A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012005878B4 (en) 2012-02-29 2022-08-04 Liebherr-Hausgeräte Lienz Gmbh refrigerator and/or freezer

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008079122A1 (en) * 2006-12-26 2008-07-03 Carrier Corporation Pulse width modulation with discharge to suction bypass
US20070235161A1 (en) * 2006-03-27 2007-10-11 Eric Barger Refrigerant based heat exchange system with compensating heat pipe technology
CN102105759B (en) * 2008-07-23 2013-11-13 开利公司 Methods and systems for compressor operation
EP2357431A1 (en) * 2010-02-01 2011-08-17 Javier Cano Cavanillas Variable capacity refrigeration system
KR20140071411A (en) * 2011-10-03 2014-06-11 일렉트로룩스 홈 프로덕츠 코오포레이션 엔.브이. Refrigerator and method of operating refrigeration system
DE102013007802A1 (en) * 2012-05-11 2013-11-14 Liebherr-Hausgeräte Ochsenhausen GmbH Fridge and / or freezer
CA2881971C (en) * 2012-09-16 2017-02-21 Hefei Meiling Co., Ltd. Electric valve and refrigeration system comprising same
KR101738458B1 (en) 2016-02-26 2017-06-08 엘지전자 주식회사 High pressure compressor and refrigerating machine having the same
US10731647B2 (en) 2016-02-26 2020-08-04 Lg Electronics Inc. High pressure compressor and refrigerating machine having a high pressure compressor
EP3211351A1 (en) * 2016-02-26 2017-08-30 Lg Electronics Inc. High pressure compressor and refrigerating machine having the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331264A (en) * 1940-05-17 1943-10-05 Detroit Lubricator Co Refrigerating system
SU1262215A1 (en) * 1985-03-28 1986-10-07 Серпуховское высшее военное командно-инженерное училище ракетных войск им.Ленинского комсомола Refrigaration machine
BR8901186A (en) * 1989-03-09 1990-10-16 Brasil Compressores Sa MIGRATION BLOCKING VALVE IN COOLING SYSTEM
JPH0828969A (en) * 1994-07-15 1996-02-02 Sanyo Electric Co Ltd Cooling system
JP2001263832A (en) * 2000-03-24 2001-09-26 Mitsubishi Electric Corp Refrigerator freezing cycle
US6711906B2 (en) * 2001-04-20 2004-03-30 Hankison International Variable evaporator control for a gas dryer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012005878B4 (en) 2012-02-29 2022-08-04 Liebherr-Hausgeräte Lienz Gmbh refrigerator and/or freezer

Also Published As

Publication number Publication date
TR200604629T1 (en) 2007-01-22
DE602005020264D1 (en) 2010-05-12
WO2005088212A1 (en) 2005-09-22
RU2006134640A (en) 2008-04-10
EP1738119A1 (en) 2007-01-03
ATE462942T1 (en) 2010-04-15
RU2347985C2 (en) 2009-02-27

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