EP2339276B1 - Kühlschrank - Google Patents

Kühlschrank Download PDF

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Publication number
EP2339276B1
EP2339276B1 EP10193809.0A EP10193809A EP2339276B1 EP 2339276 B1 EP2339276 B1 EP 2339276B1 EP 10193809 A EP10193809 A EP 10193809A EP 2339276 B1 EP2339276 B1 EP 2339276B1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
hot pipe
evaporator
refrigerating chamber
pipe
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.)
Not-in-force
Application number
EP10193809.0A
Other languages
English (en)
French (fr)
Other versions
EP2339276A2 (de
EP2339276A3 (de
Inventor
Yong Han Kim
Kook Jeong Seo
Won Jae Yoon
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 EP2339276A2 publication Critical patent/EP2339276A2/de
Publication of EP2339276A3 publication Critical patent/EP2339276A3/de
Application granted granted Critical
Publication of EP2339276B1 publication Critical patent/EP2339276B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2511—Evaporator distribution 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity

Definitions

  • Embodiments discussed herein relate to a refrigerator having a refrigeration cycle including evaporators provided respectively in a refrigerating chamber and a freezing chamber and an operation control method thereof.
  • a refrigerator is an apparatus that supplies low-temperature cool air into a storage chamber to store food in the storage chamber at low temperature in a fresh state.
  • the refrigerator may include a freezing chamber to store food at below freezing temperature and a refrigerating chamber to store food at a temperature slightly higher than freezing temperature.
  • Cool air to be supplied into the refrigerator is generated through heat exchange of a refrigerant.
  • a refrigeration cycle of compression, condensation, expansion, and evaporation is repetitively performed to continuously supply cool air into the refrigerator.
  • the supplied cool air is uniformly diffused in the refrigerator by convection to store or keep food in the refrigerator at a predetermined temperature.
  • a refrigerator in which a refrigeration cycle includes evaporators provided respectively in a refrigerating chamber and a freezing chamber and a three-way valve to supply a refrigerant discharged from a condenser to the evaporator on the refrigerating chamber side or the evaporator on the freezing chamber side, thereby controlling flow of the refrigerant according to an operation mode of the refrigerator.
  • a refrigerator is also disclosed in which a hot pipe extending from the condenser of the refrigeration cycle is arranged in the perimeters of the openings of the refrigerating chamber and the freezing chamber to prevent dew formation.
  • the hot pipe is a refrigerant pipe mounted at a high-pressure side.
  • the hot pipe is arranged upstream of the three-way valve throughout the perimeters of the openings of the refrigerating chamber and the freezing chamber to prevent dew formation at the openings of the refrigerating chamber and the freezing chamber through dissipation of heat from a high-temperature refrigerant gas during the operation of a compressor.
  • energy loss may occur due to unbalance in the amounts of heat generated from the hot pipe on the freezing chamber side and the hot pipe on the refrigerating chamber side and unbalance in the amount of the refrigerant.
  • US 2007/0068180 A1 discloses a refrigerator with the features of the pre-characterizing part of claim 1.
  • a refrigerator comprises a compressor, a condenser, a refrigerator chamber, a freezing chamber and some other parts.
  • the second circulation channel may be connected to another outlet of the channel switching valve, and the second circulation channel may be connected to the compressor via a second expansion device and a second evaporator on the freezing chamber side.
  • the first circulation channel may be connected to a second evaporator on the freezing chamber side and the compressor via the second hot pipe, a first expansion device, a first evaporator on the refrigerating chamber side, and a third expansion device in a series.
  • the first circulation channel may be connected to a first evaporator on the refrigerating chamber side and the compressor via the second hot pipe and a first expansion device.
  • the channel switching valve may include a three-way valve having one inlet connected to an outlet of the first hot pipe and two outlets connected respectively to the first circulation channel and the second circulation channel.
  • a refrigerator includes a compressor, a condenser, a first hot pipe on a freezing chamber side and a second hot pipe on a refrigerating chamber site, and a controller to control a first operation mode to cool a refrigerating chamber and a second operation mode to cool a freezing chamber, wherein the controller controls a refrigerant channel such that a refrigerant discharged from the condenser cools the freezing chamber via the first hot pipe and the second hot pipe returns to the compressor during an operation in the first operation mode.
  • the controller may control a refrigerant channel such that the refrigerant flows to the first hot pipe during an operation in the second operation mode.
  • the controller may control a refrigerant channel such that the refrigerant discharged from the condenser cools the refrigerating chamber and the freezing chamber via the first hot pipe and the second hot pipe and returns to the compressor during an operation in the first operation mode.
  • the controller may control a refrigerant channel such that the refrigerant discharged from the condenser cools the refrigerating chamber via the first hot pipe and the second hot pipe and returns to the compressor during an operation in the first operation mode.
  • an operation control method of a refrigerator including a compressor, a condenser, a first hot pipe on a freezing chamber side, a second hot pipe on a refrigerating chamber side, a refrigerating chamber, and a freezing chamber includes determining whether the refrigerating chamber or the freezing chamber is to be cooled and controlling a refrigerant discharged from the condenser to cool the freezing chamber via the first hot pipe upon determining that the freezing chamber is to be cooled.
  • the operation control method may further include controlling the refrigerant discharged from the condenser to cool the refrigerating chamber via the first hot pipe and the second hot pipe upon determining that the refrigerating chamber is to be cooled.
  • the operation control method may further include controlling the refrigerant to cool the freezing chamber, after cooling the refrigerating chamber, and return to the compressor.
  • the operation control method may further include controlling the refrigerant to return to the compressor after cooling the refrigerating chamber.
  • a refrigerator may include a refrigerator body 10 and a plurality of storage chambers 12 and 13 partitioned by a partition 11.
  • the storage chambers 12 and 13 include a refrigerating chamber 12 to store food at a temperature slightly higher than freezing temperature and a freezing chamber 13 to store food at below freezing temperature.
  • a refrigerating chamber 12 to store food at a temperature slightly higher than freezing temperature
  • a freezing chamber 13 to store food at below freezing temperature.
  • evaporators 28 and 29 may be respectively provided evaporators 28 and 29 to perform heat exchange with air in the storage chambers 12 and 13.
  • the evaporators 28 and 29 include a first evaporator 28 mounted in the refrigerating chamber 12 and a second evaporator 29 mounted in the freezing chamber 13, respectively.
  • the evaporators 28 and 29 are connected to a refrigeration cycle to cool the respective storage chambers 12 and 13.
  • the refrigeration cycle includes a compressor 21 to compress a gas refrigerant into a high-temperature and high-pressure state, a condenser 22 to condense the gas refrigerant compressed by the compressor 21 into a liquid state, expansion devices 24 and 25 (see FIG. 2 ) to convert the liquid refrigerant into a low-temperature and low-pressure state, and evaporators 28 and 29 to evaporate the low-temperature and low-pressure liquid refrigerant to generate cool air.
  • These are connected to one another via a refrigerant pipe 30 such that the refrigerant is circulated while the phase of the refrigerant is changed.
  • the expansion devices 24 and 25 may include capillary tubes or expansion valves.
  • the evaporators 28 and 29 may be provided in the respective storage chambers 12 and 13.
  • the refrigeration cycle may further include a dryer 26 provided between the compressor 22 and the expansion devices 24 and 25 to remove moisture from the refrigerant supplied from the condenser 22 and an accumulator 27 provided between the evaporators 28 and 29 and the compressor 21 to restrain the supply of the liquid refrigerant to the condenser 21.
  • a cluster pipe 31 arranged at the top and opposite sidewalls of the refrigerator body 10 in a serpentine fashion and hot pipes 32 and 33 arranged along the perimeter of a front opening of the refrigerator body 10.
  • the hot pipes 32 and 33 extend from the condenser 22 such that the hot pipes 32 and 33 are buried along the perimeter of the opening of the refrigerator body 10. Formation of dew at the front of the refrigerator body 10 due to a temperature difference between the inside and outside of the refrigerator body 10 is prevented, and the amount of heat dissipated from the high-pressure side is increased, by the dissipation of heat from the high-temperature refrigerant flowing in the hot pipes 32 and 22.
  • the hot pipes 32 and 33 may include, a first hot pipe 32 buried in the perimeter of the refrigerator body 10 constituting the freezing chamber 13 and a second hot pipe 33 buried in the perimeter of the refrigerator body 10 constituting the refrigerating chamber 12.
  • a hot pipe is connected to a refrigerant pipe.
  • the inlet and outlet of the hot pipe are connected respectively to the outlet of a high-pressure side refrigerant pipe and the inlet of a valve to control the flow of a refrigerant to a refrigerating chamber or freezing chamber evaporator.
  • a channel switching valve may be provided on a refrigerant circulation channel on the second hot pipe inlet side buried in the perimeter of the opening of the refrigerator body constituting the refrigerating chamber 12 to prevent lowering of energy efficiency of the refrigerator due to excessive heat generation from the hot pipe.
  • FIG. 2 is a schematic view illustrating the construction of a refrigeration cycle 20 according to an embodiment.
  • the refrigeration cycle is configured such that a first evaporator to generate cool air for the refrigerating chamber and a second evaporator to generate cool air for the freezing chamber are connected in series.
  • the refrigeration cycle 20 is configured such that a condenser 22 is connected to a high-pressure side discharge port of a compressor 21, and a first hot pipe 32 buried in the perimeter of the opening of the freezing chamber 13 in FIG. 1 is connected to the outlet of the condenser 22.
  • the channel switching valve 34 is not particularly restricted as long as one of the outlets is selectively opened, or bidirectional opening and closing is performed.
  • a second expansion device 25 for the freezing chamber and a second evaporator 29 are sequentially connected to the outlet of the channel switching valve 34 connected to the second circulation channel 36.
  • the outlet of the second evaporator 29 is connected to the compressor 21 via a suction pipe 37.
  • connection refrigerant pipe 38 the outlet of the first evaporator 28 and the inlet of the second evaporator 29 are connected in series via a connection refrigerant pipe 38.
  • a third expansion device 39 is mounted on the connection refrigerant pipe 38.
  • the refrigeration cycle may include a first operation mode to simultaneously cool the refrigerating chamber 12 and the freezing chamber 13, a second operation mode to cool the freezing chamber 13 alone, and a controller 100 to control the first operation mode and the second operation mode.
  • the channel switching valve 34 opens only the second circulation channel 36 under the control of the controller 100. Consequently, the refrigerant, introduced into the channel switching valve 34, cools the freezing chamber 13 via the second expansion device 25 and the second evaporator 29. The refrigerant, discharged from the second evaporator 29, returns to the compressor 21 via the suction pipe 37.
  • the amount of a refrigerant optimally filled in the refrigeration cycle may be changed depending upon a refrigerating operation or a freezing operation. Generally, an amount of a refrigerant between optimal amounts of a refrigerant for the refrigerating and freezing operations is filled in the refrigeration cycle.
  • the refrigeration cycle 40 is configured such that a condenser 22 is connected to a high-pressure side discharge port of a compressor 21, and a first hot pipe 32 buried in the perimeter of the opening of the freezing chamber 13 in FIG. 1 is connected to the outlet of the condenser 22.
  • the second hot pipe 33, the first expansion device 24, the first evaporator 28, and a suction pipe 37 are sequentially connected to the outlet of the channel switching valve 34 connected to the first circulation channel 41.
  • a second expansion device 25, a second evaporator 29, and the suction pipe 37 are sequentially connected to the outlet of the channel switching valve 34 connected to the second circulation channel 42.
  • a check valve 45 is mounted on the second discharge refrigerant pipe 44 is mounted to prevent backward flow of the refrigerant from the first discharge refrigerant pipe 43.
  • the channel switching valve 34 opens only the second circulation channel 42 under the control of the controller. Consequently, the refrigerant, introduced into the channel switching valve 34 sequentially flows through the second expansion device 25 and the second evaporator 29, and returns to the compressor 21 via the suction pipe 37.

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)

Claims (5)

  1. Kühlschrank mit einem Kompressor (21), einem Kondensor (22), einer Kühlkammer (12), einer Gefrierkammer (13), einem ersten Zirkulationskanal (35) zum Kühlen der Kühlkammer (12), einem zweiten Zirkulationskanal (36) zum Kühlen der Gefrierkammer (13), und mit einem Kanalumschaltventil (34) zum Umschalten zwischen den Zirkulationskanälen, gekennzeichnet durch eine erste Heißleitung (32) auf Seiten der Gefrierkammer und eine zweite Heißleitung (33) auf Seiten der Kühlkammer, wobei die erste Heißleitung (32) mit dem Kondensor (22) und einem Einlass des Kanalumschaltventils (34) und die zweite Heißleitung (33) mit einem Auslass des Kanalumschaltventils (34) verbunden sind.
  2. Kühlschrank nach Anspruch 1, wobei der zweite Zirkulationskanal (36) mit einem weiteren Auslass des Kanalumschaltventils (34) und der zweite Zirkulationskanal (36) mit dem Kompressor (31) über eine zweite Expansionseinrichtung (35) und einem zweiten Verdampfer (29) auf Seiten der Gefrierkammer verbunden sind.
  3. Kühlschrank nach Anspruch 1, wobei der erste Zirkulationskanal (35) mit einem zweiten Verdampfer (29) auf Seiten der Gefrierkammer und dem Kompressor (21) über die zweite Heißleitung (33), eine erste Expansionseinrichtung (24), einen ersten Verdampfer (28) auf Seiten der Kühlkammer und eine dritte Expansionseinrichtung (39) in Serie verbunden ist.
  4. Kühlschrank nach Anspruch 1, wobei der erste Zirkulationskanal (35) mit einem ersten Verdampfer (28) auf Seiten der Kühlkammer und dem Kompressor (21) über die zweite Heißleitung (33) und eine erste Expansionseinrichtung (24) verbunden ist.
  5. Kühlschrank nach Anspruch 1, wobei das Kanalumschaltventil (34) ein Dreiwegeventil aufweist mit einem Einlass, der mit einem Auslass der ersten Heißleitung (32) und mit zwei Auslässen entsprechend verbunden ist mit dem ersten Zirkulationskanal (35) und dem zweiten Zirkulationskanal (36) .
EP10193809.0A 2009-12-22 2010-12-06 Kühlschrank Not-in-force EP2339276B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090129106A KR101666428B1 (ko) 2009-12-22 2009-12-22 냉장고 및 그 운전제어방법

Publications (3)

Publication Number Publication Date
EP2339276A2 EP2339276A2 (de) 2011-06-29
EP2339276A3 EP2339276A3 (de) 2018-05-23
EP2339276B1 true EP2339276B1 (de) 2019-03-27

Family

ID=43639909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10193809.0A Not-in-force EP2339276B1 (de) 2009-12-22 2010-12-06 Kühlschrank

Country Status (4)

Country Link
US (1) US20110146310A1 (de)
EP (1) EP2339276B1 (de)
KR (1) KR101666428B1 (de)
CN (1) CN102102934B (de)

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JP6340586B2 (ja) * 2014-04-18 2018-06-13 パナソニックＩｐマネジメント株式会社 冷蔵庫
CN104236149A (zh) * 2014-10-11 2014-12-24 合肥美的电冰箱有限公司 用于冰箱的制冷系统和冰箱
JP6523765B2 (ja) * 2015-04-20 2019-06-05 日立グローバルライフソリューションズ株式会社 流体回路及び流体回路を備える機器
WO2017067035A1 (zh) * 2015-10-21 2017-04-27 合肥华凌股份有限公司 用于制冷系统的储液器组件、具有它的制冷系统和冷柜
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CN107869872A (zh) * 2016-09-28 2018-04-03 博西华电器（江苏）有限公司 冰箱
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Also Published As

Publication number Publication date
EP2339276A2 (de) 2011-06-29
CN102102934B (zh) 2015-01-14
EP2339276A3 (de) 2018-05-23
KR20110072251A (ko) 2011-06-29
KR101666428B1 (ko) 2016-10-17
US20110146310A1 (en) 2011-06-23
CN102102934A (zh) 2011-06-22

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