EP1580496A2 - Wärmepumpe - Google Patents

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Publication number
EP1580496A2
EP1580496A2 EP04103085A EP04103085A EP1580496A2 EP 1580496 A2 EP1580496 A2 EP 1580496A2 EP 04103085 A EP04103085 A EP 04103085A EP 04103085 A EP04103085 A EP 04103085A EP 1580496 A2 EP1580496 A2 EP 1580496A2
Authority
EP
European Patent Office
Prior art keywords
expansion device
refrigerant
flow path
refrigerating compartment
heat pump
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.)
Granted
Application number
EP04103085A
Other languages
English (en)
French (fr)
Other versions
EP1580496A3 (de
EP1580496B1 (de
Inventor
Hak Gyun Bae
Eung Ryeol Seo
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1580496A2 publication Critical patent/EP1580496A2/de
Publication of EP1580496A3 publication Critical patent/EP1580496A3/de
Application granted granted Critical
Publication of EP1580496B1 publication Critical patent/EP1580496B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00Self-contained movable devices, e.g. domestic refrigerators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General 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
    • F25B2400/04Refrigeration circuit bypassing means
    • F25B2400/0409Refrigeration circuit bypassing means for the evaporator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2511Evaporator distribution valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2117Temperatures of an evaporator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/12Sensors measuring the inside temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/12Sensors measuring the inside temperature
    • F25D2700/122Sensors measuring the inside temperature of freezer compartments

Definitions

  • the present invention relates to heat pump for cooling first and second spaces to respectively higher and lower temperatures.
  • the independent cooling system is used because the freezing compartment needs to be cooled significantly more than the refrigerating compartment.
  • the evaporators of the freezing and refrigerating compartments must have different evaporation temperatures.
  • expansion (pressure reduction) of a refrigerant at the upstream sides of each evaporator must be carried out in such a manner that the expansion degrees are different. Accordingly, separate expansion devices are installed for the evaporators.
  • the different evaporation temperatures of the evaporators for the freezing and refrigerating compartments means different refrigerant pressures in the evaporators.
  • Such a refrigerant pressure difference causes the refrigerant to flow through one of the evaporators in a larger quantity so that the refrigerant may not flow smoothly through the other evaporator when the refrigerant flow path is changed.
  • Holding the valve means in state (c) improves the refrigerant flow when the valve means is changing from states (a) to (b).
  • the time during which state (c) is held may be predetermined.
  • the first segment preferably includes a first expansion device followed by a first evaporator followed by a second expansion device.
  • the second segment preferably includes a second evaporator.
  • the refrigerant circuit preferably includes a compressor and condenser connected in series between the second segment and the valve means.
  • the 3-way valve 310 is operated to open the refrigerating compartment valve 310a and close the freezing compartment valve 310b.
  • the refrigerant emerging from the condenser 302 is fed into the refrigerating compartment evaporator 205 and then into the freezing compartment evaporator 207 via the refrigerating compartment capillary tube 304 and a connecting capillary tube 306.
  • the state of the 3-way valve 310 is controlled by a stepping motor (not shown). That is, a refrigerant flow path, which communicates with at least one of the refrigerating compartment evaporator 205 and freezing compartment evaporator 207, is set by operation of the stepping motor.
  • a further rotation of the stepping motor to about 154° opens the refrigerating compartment valve 310b as well.
  • the stepping motor further rotates to about 195°, the freezing compartment valve 310b is closed while the refrigerating compartment valve 310a remains open. In this state, a refrigerant flow path is established only through the refrigerating compartment evaporator 205 via the refrigerating compartment capillary tube 304.
  • a further rotation of the stepping motor to 215° closes the refrigerating compartment valve 310a as well. As a result, there is no refrigerant flow paths.
  • the refrigerant flows toward the freezing compartment evaporator 207 in a larger quantity because the pressure of the freezing compartment evaporator 207 is relatively higher than that of the refrigerating compartment evaporator 205.
  • the operation mode of the refrigerator is changed from a mode for cooling the refrigerating compartment to a mode for cooling the freezing compartment alone (that is, the angular position of the stepping motor is changed from 195° to 95° via an angular position of about 154°)
  • the refrigerant concentrated to the freezing compartment evaporator 207 cannot be sufficiently supplied through the refrigerant flow path communicating with the refrigerating compartment evaporator 205.
  • the simultaneous opening stage t0 corresponding to the position of about 154°, is maintained for a relatively long period of time.
  • both the refrigerating compartment valve 310a and the freezing compartment valve 310b are open for a sufficient period of time to allow the refrigerant concentrated to the freezing compartment evaporator 207 to be sufficiently and smoothly supplied through the refrigerant flow path communicating with the refrigerating compartment evaporator 205.
  • the refrigerator includes the control system shown in Figure 3.
  • an input unit 354 and a temperature detecting unit 356 are connected to an input of a control unit 352 for controlling the operation of the refrigerator.
  • the input unit 354 allows the user to set a desired target cooling temperature, a desired cooling mode and other operating conditions.
  • the temperature detecting unit 356 detects the temperatures of the refrigerating compartment 210, the freezing compartment 220, the refrigerating compartment evaporator 205 and the freezing compartment evaporator 207 and other temperatures and informs the control unit 352 of the detected temperatures. Based on the detected temperatures, the control unit 352 controls the cooling operation of the refrigerator.
  • the 3-way valve 310 is electrically connected to an output of the control unit 352, along with a compressor 201.
  • the 3-way valve 310 and compressor 201 are controlled by the control unit 352 to implement a cooling mode and achieve a target cooling temperature set by the user.
  • the operation of the control unit 352 will now be described with reference to Figures 4 and 5.
  • Step 402 After completion of the cooling of the refrigerating compartment 210, the control unit 352 determines whether or not the freezing compartment 220 needs cooling. Based on this determination, the control unit 352 determines whether or not the refrigerant flow path needs to be changed from the refrigerating compartment 210 to the freezing compartment 220 (Step 404).
  • Step 406 the control unit 352 changes the angular position of the stepping motor from 195° to 154°.
  • This procedure is an intermediate procedure involved in a procedure in which the stepping motor is rotated to 95°.
  • both the refrigerating compartment valve 310a and the freezing compartment valve 310b are open.
  • the stepping motor is rotated to the 95° position without any delay in the intermediate procedure, thereby closing the refrigerating compartment valve 310a while opening only the freezing compartment valve 310b to cool only the freezing compartment 220 (Step 408).
  • the time, for which both of the valves 310a, 310b are open is minimized during the change of the refrigerant flow path from the refrigerating compartment 210 to the freezing compartment 220. Accordingly, it is possible to reduce the degree of concentration of the refrigerant from the refrigerating compartment evaporator 205 to the freezing compartment evaporator 207.
  • Step 502 After completion of the cooling of the freezing compartment 220, it is determined whether or not the refrigerating compartment 210 needs to be cooled. Based on this determination, it is then determined whether or not the refrigerant flow path needs to be changed from the freezing compartment 220 to the refrigerating compartment 210 (Step 504).
  • Step 506 When it is necessary to change the refrigerant flow path from the freezing compartment 220 to the refrigerating compartment 210, the angular position of the stepping motor is changed from 95° to 154° (Step 506).
  • This procedure is an intermediate procedure involved in a procedure in which the stepping motor is rotated to 195°.
  • a simultaneous opening stage in which both the refrigerating compartment valve 310a and the freezing compartment valve 310b are both open, is established. Where the refrigerant flow path is to be changed from the freezing compartment 220 to the refrigerating compartment 210, the simultaneous opening stage established in the intermediate procedure is continued for a predetermined time (for example, 10 seconds).
  • both the refrigerating compartment valve 310a and the freezing compartment valve 310b are open for the predetermined time (Step 508).
  • both of the valves 310a and 310b are open for the predetermined time during the change of the refrigerant flow path from the freezing compartment 220 to the refrigerating compartment 210, as described above, the refrigerant concentrated to the freezing compartment evaporator 220 can sufficiently flow toward the refrigerating compartment evaporator 210.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
EP04103085A 2004-03-23 2004-06-30 Wärmepumpe Expired - Lifetime EP1580496B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20040019700 2004-03-23
KR2004019700 2004-03-23

Publications (3)

Publication Number Publication Date
EP1580496A2 true EP1580496A2 (de) 2005-09-28
EP1580496A3 EP1580496A3 (de) 2005-11-23
EP1580496B1 EP1580496B1 (de) 2008-01-09

Family

ID=34858876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04103085A Expired - Lifetime EP1580496B1 (de) 2004-03-23 2004-06-30 Wärmepumpe

Country Status (5)

Country Link
US (1) US20050210898A1 (de)
EP (1) EP1580496B1 (de)
KR (1) KR100648943B1 (de)
CN (1) CN1673653A (de)
DE (1) DE602004011180T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2218986A3 (de) * 2009-02-16 2016-01-06 BSH Hausgeräte GmbH Kältegerät mit mehreren Fächern

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1780484A1 (de) * 2004-08-19 2007-05-02 Hisense Group Co., Ltd. Verbund-kühlschrank mit einem multizyklus-kühlsystem und steuerverfahren dafür
JP2007183020A (ja) * 2006-01-05 2007-07-19 Matsushita Electric Ind Co Ltd 能力可変式空気調和機
KR100863041B1 (ko) * 2006-11-10 2008-10-13 엘지전자 주식회사 냉장고 제어방법
KR100909865B1 (ko) * 2008-01-10 2009-08-14 주식회사 성영루디스 냉장고의 냉장 냉동 사이클 제어방법
KR101666428B1 (ko) * 2009-12-22 2016-10-17 삼성전자주식회사 냉장고 및 그 운전제어방법
KR101705528B1 (ko) * 2010-07-29 2017-02-22 엘지전자 주식회사 냉장고 및 냉장고 제어 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999042771A1 (en) * 1998-02-20 1999-08-26 Matsushita Refrigeration Company Refrigerator
JP2002213626A (ja) * 2001-01-23 2002-07-31 Saginomiya Seisakusho Inc 電動式切換弁および冷凍・冷蔵庫用の冷凍サイクル装置
EP1233219A1 (de) * 2000-08-11 2002-08-21 Kabushiki Kaisha Saginomiya Seisakusho Motorbetätigtes umschaltventil und kältekreislauf eines kühl- und gefriergeräts
EP1394481A2 (de) * 2002-08-31 2004-03-03 Samsung Electronics Co., Ltd. Kühlschrank
EP1426711A2 (de) * 2002-12-04 2004-06-09 Samsung Electronics Co., Ltd. Kühlgerät und Steuerverfahren desselben

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200265115Y1 (ko) * 1996-04-23 2002-11-13 엘지전자주식회사 냉장고의냉동싸이클장치
JPH11311473A (ja) * 1998-04-28 1999-11-09 Toshiba Corp 冷蔵庫の制御方法
JP3462156B2 (ja) * 1999-11-30 2003-11-05 株式会社東芝 冷蔵庫
US6672089B2 (en) * 2000-10-12 2004-01-06 Lg Electronics Inc. Apparatus and method for controlling refrigerating cycle of refrigerator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999042771A1 (en) * 1998-02-20 1999-08-26 Matsushita Refrigeration Company Refrigerator
EP1233219A1 (de) * 2000-08-11 2002-08-21 Kabushiki Kaisha Saginomiya Seisakusho Motorbetätigtes umschaltventil und kältekreislauf eines kühl- und gefriergeräts
JP2002213626A (ja) * 2001-01-23 2002-07-31 Saginomiya Seisakusho Inc 電動式切換弁および冷凍・冷蔵庫用の冷凍サイクル装置
EP1394481A2 (de) * 2002-08-31 2004-03-03 Samsung Electronics Co., Ltd. Kühlschrank
EP1426711A2 (de) * 2002-12-04 2004-06-09 Samsung Electronics Co., Ltd. Kühlgerät und Steuerverfahren desselben

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 11, 6 November 2002 (2002-11-06) -& JP 2002 213626 A (SAGINOMIYA SEISAKUSHO INC), 31 July 2002 (2002-07-31) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2218986A3 (de) * 2009-02-16 2016-01-06 BSH Hausgeräte GmbH Kältegerät mit mehreren Fächern

Also Published As

Publication number Publication date
DE602004011180D1 (de) 2008-02-21
KR100648943B1 (ko) 2006-11-27
DE602004011180T2 (de) 2008-12-24
US20050210898A1 (en) 2005-09-29
KR20060043709A (ko) 2006-05-15
CN1673653A (zh) 2005-09-28
EP1580496A3 (de) 2005-11-23
EP1580496B1 (de) 2008-01-09

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