WO2005052475A1 - 冷蔵庫 - Google Patents
冷蔵庫 Download PDFInfo
- Publication number
- WO2005052475A1 WO2005052475A1 PCT/JP2004/016970 JP2004016970W WO2005052475A1 WO 2005052475 A1 WO2005052475 A1 WO 2005052475A1 JP 2004016970 W JP2004016970 W JP 2004016970W WO 2005052475 A1 WO2005052475 A1 WO 2005052475A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- refrigerator
- compartment
- cooling
- circuit
- temperature
- Prior art date
Links
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
- F25D29/00—Arrangement or mounting of control or safety devices
-
- 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
-
- 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
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/04—Refrigerators with a horizontal mullion
-
- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
-
- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
- F25D2700/122—Sensors measuring the inside temperature of freezer compartments
Definitions
- the present invention relates to power saving of a refrigerator in which simultaneous cooling of a refrigeration room and a freezing room and cooling of a freezing room are alternately performed, and the refrigerator is cooled by a direct cooling system and the freezing room is cooled by an intercooling system.
- Conventional medium- and large-sized refrigerator-freezers include a refrigerator-evaporator for cooling a refrigerator, a refrigerator-cooling fan, a refrigerator-evaporator for cooling a refrigerator, and a refrigerator-cooler.
- the cooling room and the freezing room are both cooled by intercooling.
- FIG. 7 shows a conventional refrigerator described in Japanese Patent Application Publication No. 10-503277.
- the refrigerator compartment 1 and the freezer compartment 2 are formed vertically.
- the heat insulating material 5 is filled between the cabinet 3 and the inner box 4 forming the refrigerator compartment 1.
- the evaporator 6 for the refrigerating room and the refrigerating room cooling fan 7 for circulating the air in the refrigerating room 1 through the evaporator 6 for the refrigerating room are installed behind the refrigerating room 1.
- a freezer evaporator 8 and a freezer cooling fan 9 for circulating the air in the freezer 2 through the freezer evaporator 8 are provided at the back of the freezer 2.
- the refrigerator compartment temperature sensor 10 and the freezer compartment temperature sensor 11 are installed in the refrigerator compartment and the freezer compartment, respectively.
- a control circuit 12 including a microcomputer (not shown) controls the operation of the compressor 13, the switching valve 14, the cooling fan 7, and the cooling fan 9, and keeps the refrigerator compartment 1 and the freezer compartment 2 at a predetermined temperature. Control.
- the conventional configuration described above is of a cooling type in which the refrigerating compartment 1 and the freezing compartment 2 are stirred by the cooling fan 7 and the cooling fan 9, respectively, so that the temperature distribution in the refrigerator is good. Cooling speed is high, but heat leakage from gasket and other sources is large. Furthermore, a cooling air duct and a defrost circuit are required, so that a simple cooling cycle cannot be configured.
- a refrigerator using a direct cooling type evaporator in a refrigerator compartment which can simply configure a cooling cycle using natural convection with little heat leak, has been proposed.
- Refrigerator may not be operated according to program, freezer compartment required There is a problem that the cooling is performed as described above, and the power consumption increases.
- the present invention reduces the power consumption of a refrigerator employing a direct cooling system in a refrigerator.
- the refrigerator of the present invention includes a compressor that compresses a refrigerant, a refrigerator that is directly cooled by a refrigerator evaporator, a refrigerator temperature sensor that detects the temperature of the refrigerator, and a refrigerator evaporator.
- a freezing room that is indirectly cooled by a freezing room cooling fan, a freezing room temperature sensor that detects the temperature of the freezing room, and the refrigerator room and the freezing room temperature sensor according to signals from the freezing room temperature sensor and the freezing room temperature sensor.
- the difference between the temperature and the OFF temperature at which the cooling is terminated is smaller than the difference between the ON temperature at which the cooling of the freezer compartment is started and the OFF temperature at which the cooling is terminated.
- the refrigerator can be operated in a stable cycle in which cooling is started from the refrigerator compartment's freezer compartment circuit and is terminated in the freezer compartment circuit.
- the refrigerator compartment and the freezer compartment can be cooled to appropriate temperatures, and the power consumption of the refrigerator is reduced.
- FIG. 1 is a cross-sectional view of a refrigerator according to Embodiment 1 of the present invention.
- FIG. 2 is a refrigeration cycle diagram of a refrigerator according to Embodiment 1 of the present invention.
- FIG. 3 is a time chart of the refrigerator in the first embodiment of the present invention.
- FIG. 4 is a time chart of the refrigerator in the second embodiment of the present invention.
- FIG. 5 is a time chart of the refrigerator in Embodiment 3 of the present invention.
- FIG. 6 is a time chart of the refrigerator in Embodiment 4 of the present invention.
- FIG. 7 is a sectional view of a conventional refrigerator.
- FIG. 1 is a sectional view of a refrigerator according to Embodiment 1 of the present invention.
- the refrigerator compartment 21 and the freezer compartment 22 are formed vertically.
- a heat insulating material 25 is filled between the cabinet 23 and the inner box 24 forming the refrigerator compartment 21.
- a refrigerator evaporator 26 is provided at the back of the refrigerator 21.
- a freezer evaporator 27 and a freezer cooling fan 28 for circulating the air in the freezer 22 through the freezer evaporator 27 are provided at the back of the freezer 22.
- the control circuit 33 controls the compressor 31, the flow path switching valve 32, and the cooling fan 28.
- the compressor 31 and the flow path switching valve 32 are disposed in the machine room 34 in consideration of safety when a flammable refrigerant is used.
- the compressor 31 can change the refrigerating capacity by, for example, controlling the number of revolutions by an inverter circuit.
- FIG. 2 shows a refrigerating cycle of a refrigerator according to Embodiment 1 of the present invention, in which a compressor 31, a condenser 35, a dryer 36, a flow path switching valve 32, a first capillary 37, a second capillary 38, and a refrigerator It is composed of a room evaporator 26, a freezing room evaporator 27 and a pipe connecting these.
- the flow path switching valve 32 controls the flow of the refrigerant in accordance with signals from the refrigerator temperature sensor 29 and the freezer temperature sensor 30 so that the refrigerant flows through the second capillary 38 and the freezer evaporator 27, Or the first capillary 37, refrigerator compartment evaporator 26, freezer compartment evaporator 27 Switch to the refrigerator compartment circuit that passes through the refrigerator compartment.
- the freezer compartment circuit only the freezer compartment is cooled, and in the case of the refrigerator compartment / freezer compartment circuit, the refrigerator compartment and the freezer compartment are simultaneously cooled in series.
- the control circuit 33 receives the signal from the freezing room temperature sensor 30 and operates the compressor 31 to release the flow path switching valve 32 to the second capillary 38 side.
- the freezer 22 is cooled.
- the high-temperature and high-pressure refrigerant discharged from the compressor 31 radiates heat in the condenser 35 to condense liquid, passes through the flow path switching valve 32, is depressurized by the second capillary 38, and evaporates for the freezer compartment.
- Container 27 is reached.
- the refrigerant that has exchanged heat with the air in the freezing room 22 evaporates and evaporates in the freezing room evaporator 27, and the air in the freezing room 22 is cooled.
- the control means 33 controls the refrigerator compartment temperature.
- the flow path switching valve 32 is opened to the first capillary 37 side to cool the refrigerator compartment 21 and the freezer compartment 22 in series.
- the high-temperature and high-pressure refrigerant discharged from the compressor 31 radiates heat in the condenser 35 to condense, and is decompressed by the first capillary 37 via the flow path switching valve 32 to evaporate for the refrigerator compartment.
- To container 26 The refrigerant that actively exchanged heat with the air in the refrigerator compartment 21 is partially vaporized and evaporated in the refrigerator evaporator 26, and the heat-exchanged air becomes lower-temperature air to cool the refrigerator compartment 21.
- the vaporized refrigerant and the non-vaporized refrigerant reach the freezing room evaporator 27, and the refrigerant that has exchanged heat with the air in the freezing room 22 evaporates and evaporates in the freezing room evaporator 27.
- the air is cooled.
- the vaporized refrigerant is sucked into the compressor 31.
- the flow of the refrigerant by the flow path switching valve 32 is transmitted to the refrigerator compartment circuit or the refrigerator compartment's refrigerator compartment circuit. Switch to control the temperature of the refrigerator compartment and freezer compartment.
- the control program of the control circuit 33 starts cooling the refrigerator compartment 21.
- ON temperature 39 and An off-temperature 40 at which cooling is stopped, an on-temperature 41 at which cooling of the freezer compartment 22 is started, and an off-temperature 41 at which cooling is stopped are incorporated in advance.
- the control circuit 33 operates the compressor 31 and the flow path switching valve 31 in response to a signal of the temperature in the refrigerator 21 and the refrigerator 22 detected by the refrigerator temperature sensor 29 and the refrigerator temperature sensor 30.
- the difference between the ON temperature 39 at which the refrigerator compartment 21 starts to cool and the OFF temperature 40 at which cooling is stopped is defined as the ON temperature 41 at which the freezer compartment 22 starts cooling and the cooling is stopped.
- the freezer compartment differential By making the difference between the off-temperatures 41 (hereinafter referred to as the freezer compartment differential) smaller, for example, by setting the refrigerator compartment differential to about 1 ° C and the freezer compartment differential to about 3 ° C, the refrigerator compartment 21 is kept at a predetermined approx. At 5 ° C, the freezer compartment 22 reaches the specified temperature of about -18 ° C, the compressor 31 stops, and while the compressor 31 is stopped, the refrigerator compartment 21 and the freezer compartment 22 absorb heat due to the ambient temperature and the temperature rises. However, since the inside temperature of the refrigerator compartment 21 reaches the ON temperature at which cooling starts before the inside temperature of the freezer compartment 22, cooling must be started from the refrigerator compartment's freezer compartment circuit.
- the difference between the ON temperature 39 and the OFF temperature 40 of the refrigerator compartment temperature sensor 29 is made smaller than the difference between the ON temperature 41 and the OFF temperature 42 of the freezer compartment temperature sensor 30.
- the refrigerator can be operated in a stable cycle in which cooling is started from the freezer compartment and the freezer compartment circuit and is terminated in the freezer compartment circuit. It is possible to suppress an increase in power consumption by cooling more than necessary, thereby saving power.
- FIG. 4 is a time chart according to Embodiment 2 of the present invention. The description of the same operation as in the first embodiment will be omitted, and only the control of the compressor rotation speed will be described.
- the rotation speed (hereinafter R2) of the compressor 31 during the freezer compartment / freezer compartment circuit is increased by the freezer compartment frequency.
- R1 the rotation speed of the compressor 31 during the road
- the input of the compressor which occupies most of the power consumption, can be reduced.
- the rotation speed higher than that in the freezer compartment circuit the operation time in the freezer compartment circuit can be suppressed, and power can be saved.
- FIG. 5 is a time chart according to the third embodiment of the present invention. The description of the same operation as in the first embodiment will be omitted, and only the control of the rotation speed of the cooling fan will be described.
- FIG. 6 is a time chart according to Embodiment 4 of the present invention. The description of the same operation as in the first embodiment will be omitted, and only the control of the rotation speed of the cooling fan will be described.
- Refrigerator / freezer compartment circuit power In a stable cycle of starting cooling and ending the cooling in the freezer compartment circuit, by stopping the freezer compartment cooling fan 28 for T2 hours at the start of cooling of the refrigerator compartment / freezer compartment circuit, Refrigeration compartment ⁇
- the evaporator 27 for the freezer compartment has a high evaporation temperature and suppresses heat exchange when the heat exchange efficiency is low, and the input of the cooling fan 28 is reduced. Cooling efficiency at the start of circuit cooling can be increased, and power saving can be achieved.
- the refrigerator of the present invention can be widely used because it reduces power consumption.
- the present invention is also applicable to Peltier refrigerators and the like.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003399079A JP2005156108A (ja) | 2003-11-28 | 2003-11-28 | 冷蔵庫 |
JP2003-399079 | 2003-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005052475A1 true WO2005052475A1 (ja) | 2005-06-09 |
Family
ID=34631591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/016970 WO2005052475A1 (ja) | 2003-11-28 | 2004-11-16 | 冷蔵庫 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP2005156108A (ja) |
CN (1) | CN100572992C (ja) |
WO (1) | WO2005052475A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITRN20080008A1 (it) * | 2008-02-15 | 2009-08-16 | Indesit Co Spa | Dispositivo elettrico di raffreddamento e di conservazione di alimenti. |
KR101542770B1 (ko) * | 2008-11-26 | 2015-08-07 | 엘지전자 주식회사 | 냉장고 |
CN101696831B (zh) * | 2009-10-21 | 2012-10-03 | 合肥华凌股份有限公司 | 提高冷冻能力的机械温控直冷冰箱制冷系统 |
PL2938942T3 (pl) * | 2012-12-31 | 2018-08-31 | Arçelik Anonim Sirketi | Urządzenie chłodzące |
CN103542691A (zh) * | 2013-10-31 | 2014-01-29 | 合肥荣事达三洋电器股份有限公司 | 一种用于电子直冷冰箱的分段式补偿加热装置 |
CN105698462B (zh) * | 2016-01-29 | 2018-02-13 | 合肥美的电冰箱有限公司 | 一种直冷冰箱风机控制方法系统及冰箱 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09229533A (ja) * | 1996-02-23 | 1997-09-05 | Matsushita Refrig Co Ltd | 冷蔵庫 |
JPH11311458A (ja) * | 1998-04-28 | 1999-11-09 | Toshiba Corp | 冷却装置 |
JP2001082849A (ja) * | 1999-09-16 | 2001-03-30 | Toshiba Corp | 冷蔵庫 |
JP2002107026A (ja) * | 2000-09-29 | 2002-04-10 | Sanyo Electric Co Ltd | 冷蔵庫の運転制御装置 |
JP2002286347A (ja) * | 2001-03-27 | 2002-10-03 | Sanyo Electric Co Ltd | 冷却貯蔵庫 |
-
2003
- 2003-11-28 JP JP2003399079A patent/JP2005156108A/ja active Pending
-
2004
- 2004-11-16 WO PCT/JP2004/016970 patent/WO2005052475A1/ja active Application Filing
- 2004-11-16 CN CNB2004800321223A patent/CN100572992C/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09229533A (ja) * | 1996-02-23 | 1997-09-05 | Matsushita Refrig Co Ltd | 冷蔵庫 |
JPH11311458A (ja) * | 1998-04-28 | 1999-11-09 | Toshiba Corp | 冷却装置 |
JP2001082849A (ja) * | 1999-09-16 | 2001-03-30 | Toshiba Corp | 冷蔵庫 |
JP2002107026A (ja) * | 2000-09-29 | 2002-04-10 | Sanyo Electric Co Ltd | 冷蔵庫の運転制御装置 |
JP2002286347A (ja) * | 2001-03-27 | 2002-10-03 | Sanyo Electric Co Ltd | 冷却貯蔵庫 |
Also Published As
Publication number | Publication date |
---|---|
CN100572992C (zh) | 2009-12-23 |
JP2005156108A (ja) | 2005-06-16 |
CN1875230A (zh) | 2006-12-06 |
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