CN102967118A - Refrigerator defrosting control method and refrigerator adopting method - Google Patents

Refrigerator defrosting control method and refrigerator adopting method Download PDF

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Publication number
CN102967118A
CN102967118A CN2012105331711A CN201210533171A CN102967118A CN 102967118 A CN102967118 A CN 102967118A CN 2012105331711 A CN2012105331711 A CN 2012105331711A CN 201210533171 A CN201210533171 A CN 201210533171A CN 102967118 A CN102967118 A CN 102967118A
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CN
China
Prior art keywords
refrigerator
compressor
condenser
defrosting
defrost
Prior art date
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Pending
Application number
CN2012105331711A
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Chinese (zh)
Inventor
魏邦福
荆嵩
刘全义
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Hefei Meiling Co ltd
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Hefei Meiling 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.)
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Publication date
Application filed by Hefei Meiling Co ltd filed Critical Hefei Meiling Co ltd
Priority to CN2012105331711A priority Critical patent/CN102967118A/en
Publication of CN102967118A publication Critical patent/CN102967118A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a refrigerator defrosting control method and a refrigerator adopting the method. A refrigerating system of the refrigerator is a refrigerant circulating system consisting of a compressor, a condenser, a filter, a capillary pipe and an evaporator. A flow regulating valve is arranged on a pipeline by which the condenser is communicated with the capillary pipe. When a defrosting request is sent to the refrigerator, the flow regulating valve is closed, the compressor is stopped after continuously working for t seconds, a defrosting heater is then connected, and the refrigerator enters a defrosting procedure unit defrosting is finished. Heat loss of defrosting can be effectively reduced, and a liquid refrigerant in the evaporator is enabled to perform a refrigerating function.

Description

The refrigerator of refrigerator defrosting control method and employing the method
Technical field:
The present invention relates to a kind of defrosting control method of wind cooling refrigerator, and the refrigerator that adopts this kind defrosting control method, refrigerator defrosting control technical field belonged to.
Background technology:
The refrigeration modes of refrigerator chamber can be divided into direct-cooled mode and air cooling way, direct-cooled mode be evaporator surface and a room air by the heat exchange of free convection mode, air cooling way is that evaporator surface and a room air are by the heat exchange of fan forced convection mode.Between indoor air in by evaporimeter circulating cooling process, its moisture can be separated out at evaporator surface and is frozen into frost or ice, along with the thickness of frost or ice increases, the evaporimeter heat exchange efficiency reduces gradually.Because air cooling refrigerator evaporator surface and an indoor air circulate by fan forced convection, so easier frost or ice of being frozen into of its evaporator surface, even owing to limited space in the evaporimeter storehouse, can block whole air channel, cause refrigerator to completely lose refrigerating function, so wind cooling refrigerator needs periodically defrosting.
At present, the air cooling refrigerator evaporator Defrost mode generally adopts Electric heating, and radiation, convection current and conduction complex heat transfer mode heating fumigators by heater make to reach certain temperature in the evaporimeter storehouse, thereby reach the purpose of evaporator defrost.The working method of its defrost is: when refrigerator had the defrost request, compressor stopped refrigeration, connected defrosting heater, and refrigerator enters the defrost program.In electric heater specific works process, along with the temperature in the evaporimeter storehouse raises, be trapped in the evaporation of can absorbing heat of all liquid refrigerants in the evaporimeter, become superheat state by saturation state.As from the foregoing, inevitably there is the defrost energy loss that liquid refrigerant causes because of the heat absorption evaporation in the evaporimeter in this Defrost mode.
Chinese invention patent CN03112681.2 " condenser pressure-retaining energy-saving in-box refrigerating system " discloses a kind of condenser pressurize power-saving technology, its utilize flow control device in moment that compressor stops the port closing with condenser, keep the pressure differential between condenser and the evaporimeter, stoping hot cold-producing medium to flow into evaporimeter affects refrigeration.When compressor starts again, can save the process that rebulids pressure reduction, realize rapidly refrigeration for refrigerator.In order to help compressor start, above-mentioned " condenser pressure-retaining energy-saving in-box refrigerating system " further comprises " pressure release " loop of check valve in the design of the entry position of condenser.
According to CN03112681.2 " condenser pressure-retaining energy-saving in-box refrigerating system "; compressor shutdown and flow control device are closed simultaneously and are carried out; although can effectively stop condenser mesohigh cold-producing medium through capillary flow to evaporimeter; but a large amount of liquid refrigerants have been detained in the evaporimeter; this liquid refrigerant can absorb the heat of heater and evaporates during the evaporimeter defrost; thereby cause the heater section thermal loss, cause the whole energy consumption of refrigerator to rise.
Summary of the invention:
For overcoming the defective of prior art, the refrigerator that the object of the present invention is to provide a kind of defrosting control method of wind cooling refrigerator and adopt the method evaporates liquid refrigerant in the evaporimeter fully and reaches energy-conservation purpose.
Technical solution problem of the present invention adopts following technical scheme:
The refrigerator defrosting control method; the refrigeration system of described refrigerator consists of refrigerant-cycle systems by compressor, condenser, filter, capillary and evaporimeter; lead to pipeline capillaceous at described condenser and be provided with flow control valve; when refrigerator has the defrost request; flow control valve cuts out, and the compressor t that works on shut down after second, and then connects defrosting heater; refrigerator enters the defrost program, until defrost is finished.
The span of described t second is: 10-150.
Also include the pressure release branch road in the described refrigerant-cycle systems, described pressure release branch road is to be communicated with the evaporimeter low-pressure end by the exhaust end of relief tube with compressor, in described pressure release branch road, also be serially connected with relief valve, and be serially connected with the check valve that stops condenser mesohigh cold-producing medium reverse flow in the pipeline between compressor and condenser; When compressor shutdown described relief valve open synchronously, described check valve close synchronously, refrigerator enters the defrost program until defrost is finished; Described relief valve close synchronously when compressor is started shooting.
Compared with the prior art, beneficial effect of the present invention is embodied in:
Specific works mode of the present invention is when judging that refrigerator has the request defrost; flow control valve cuts out; stop condenser mesohigh cold-producing medium to flow to evaporimeter through capillary; but compressor continues operation; lasting compression comes the low-pressure gaseous refrigerant of flash-pot; force the liquid refrigerant heat absorption evaporation in the evaporimeter; in compressor operating t finisher second without liquid or have a small amount of liquid state to accumulate; this moment compressor shutdown; relief valve is opened; cold-producing medium stops to circulate; connect defrosting heater, refrigerator enters the defrost program, until defrost finishes; the present invention not only can effectively reduce the defrost thermal loss, can also make the liquid refrigerant performance refrigeration in the evaporimeter.
Description of drawings:
Fig. 1 is refrigerant system configurations schematic diagram of the present invention; Fig. 2 is specific embodiment of the invention structural representation; Fig. 3 is specific embodiment of the invention control flow chart.
Number in the figure: 1 compressor, 2 condensers, 3 filters, 4 capillaries, 5 evaporimeters, 6 check valves, 7 flow control valves, 8 relief valves, 9 relief tubes, 51 defrosting heaters.
Below pass through the specific embodiment, and the invention will be further described by reference to the accompanying drawings.
The specific embodiment:
Embodiment: in conjunction with Fig. 1,3; the refrigerant-cycle systems that the refrigeration system of present embodiment refrigerator is made of compressor 1, condenser 2, filter 3, capillary 4, evaporimeter 5; pipeline between condenser 2 and capillary 4 arranges flow control valve 7; when judgement needs defrost; flow control valve 7 cuts out; compressor 1 continues operation t(10-150) second rear the shutdown; cold-producing medium in the evaporimeter 5 is entered condenser 2; and then connection defrosting heater 51; refrigerator enters the defrost program, until defrost is finished.Before refrigerator recovered refrigerating state, flow control valve 7 kept cutting out.Compressor 1 and defrosting heater 51 all are connected with the refrigerator control panel and control on/off by the refrigerator control panel.
In order to guarantee that compressor 1 can normally start, at the exhaust end of compressor 1 the pressure release branch road is set, to guarantee compressor start moment suction end and exhaust end pressure balance.Concrete mode as shown in Figure 2, in described pressure release branch road, with relief tube 9 compressor 1 exhaust end is connected with evaporimeter 5 low-pressure ends, for preventing condenser 2 high-pressure refrigerant reverse flow, pipeline between compressor 1 and condenser 2 arranges check valve 6, check valve 6 is closed immediately when compressor 1 is shut down, and refrigerator enters the defrost program until defrost is finished; Described check valve 6 is opened immediately when compressor 1 start.
Under compressor 1 open state; owing to shunting or the short circuit of pressure release branch road affects refrigeration; can relief valve 8 be set at the pressure release branch road, along with compressor 1 is shut down synchronously or opened after a while, flow control valve 7, relief valve 8 can replace with a multifunction valve.
Operation principle:
When refrigerator has the defrost request under refrigerating state; refrigerator control panel control flow control valve 7 cuts out; stop condenser 2 mesohigh cold-producing mediums to flow to evaporimeter 5 through capillary 4; compressor 1 continues the low-pressure gaseous refrigerant that compression comes flash-pot 5; make the liquid refrigerant evaporation endothermic of evaporimeter 5; thereby it is interior without liquid or a small amount of liquid refrigerant state to reach evaporimeter 5; the method not only can avoid in defrost process the liquid refrigerant in the evaporimeter 5 by saturation state to overheated conditioning frost energy loss; can also make the liquid refrigerant performance refrigeration that is trapped in the evaporimeter; t(10-150) a second rear compressor 1 is shut down; relief valve 8 is opened synchronously; check valve 6 is along with cold-producing medium reaction force and self spool gravity reversal close; stop the high-pressure refrigerant reverse flow; system refrigerant stops to circulate; refrigerator withdraws from the refrigeration program, and defrosting heater 51 is opened in the control of refrigerator control panel, and refrigerator enters the defrost program.

Claims (4)

1. refrigerator defrosting control method; the refrigeration system of described refrigerator consists of refrigerant-cycle systems by compressor (1), condenser (2), filter (3), capillary (4) and evaporimeter (5); the pipeline that leads to capillary (4) at described condenser (2) is provided with flow control valve (7); it is characterized in that; when refrigerator has the defrost request; flow control valve (7) cuts out; compressor (1) t that works on shut down after second; and then connection defrosting heater; refrigerator enters the defrost program, until defrost is finished.
2. refrigerator defrosting control method according to claim 1 is characterized in that, the span of described t second is: 10-150.
3. refrigerator defrosting control method according to claim 1, it is characterized in that, also include the pressure release branch road in the described refrigerant-cycle systems, described pressure release branch road is to be communicated with evaporimeter (5) low-pressure end by the exhaust end of relief tube (9) with compressor, in described pressure release branch road, also be serially connected with relief valve (8), and be serially connected with the check valve (6) that stops condenser mesohigh cold-producing medium reverse flow in the pipeline between compressor (1) and condenser (2); When compressor (1) is shut down described relief valve (8) open synchronously, described check valve (6) close synchronously, refrigerator enters the defrost program until defrost is finished; Described relief valve close synchronously when compressor is started shooting.
4. a refrigerator is characterized in that, described refrigerator adopts the described defrosting control method of arbitrary claim among the claim 1-3.
CN2012105331711A 2012-12-12 2012-12-12 Refrigerator defrosting control method and refrigerator adopting method Pending CN102967118A (en)

Priority Applications (1)

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CN2012105331711A CN102967118A (en) 2012-12-12 2012-12-12 Refrigerator defrosting control method and refrigerator adopting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012105331711A CN102967118A (en) 2012-12-12 2012-12-12 Refrigerator defrosting control method and refrigerator adopting method

Publications (1)

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CN102967118A true CN102967118A (en) 2013-03-13

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103292545A (en) * 2013-05-06 2013-09-11 四川长虹电器股份有限公司 Method and device for defrosting and maintaining pressure of refrigerator
CN103591751A (en) * 2013-10-30 2014-02-19 西安交通大学 Defrosting system of air cooling refrigerator and defrosting control method thereof
CN105605839A (en) * 2015-12-30 2016-05-25 青岛海尔股份有限公司 Refrigerator and defrosting system thereof
CN105953522A (en) * 2016-05-27 2016-09-21 青岛海尔股份有限公司 Refrigerator defrosting control method
CN109764607A (en) * 2018-12-28 2019-05-17 青岛海尔股份有限公司 The control method of refrigerator
CN110530043A (en) * 2019-09-03 2019-12-03 合肥晶弘电器有限公司 The control method of refrigeration system, refrigerator and refrigeration system

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Publication number Priority date Publication date Assignee Title
JPH0415460A (en) * 1990-05-09 1992-01-20 Mitsubishi Electric Corp Freezer device
JP2000121232A (en) * 1998-10-20 2000-04-28 Matsushita Refrig Co Ltd Refrigerator
CN2490514Y (en) * 2001-04-13 2002-05-08 伊莱克斯中意(长沙)电冰箱有限公司 Domestic energy-saving refrigeration device with check valve
CN2497245Y (en) * 2001-08-15 2002-06-26 广东科龙电器股份有限公司 Hot-gas defrosting refrigerator
CN1515851A (en) * 2003-01-11 2004-07-28 合肥美菱股份有限公司 Condenser pressure-retaining energy-saving type refrigeration system for refrigerator
JP2005207666A (en) * 2004-01-22 2005-08-04 Toshiba Corp Refrigerator
CN101368784A (en) * 2008-09-09 2009-02-18 广西壮族自治区农业科学院 Ice house high-efficiency electric-heating defrosting device and use method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0415460A (en) * 1990-05-09 1992-01-20 Mitsubishi Electric Corp Freezer device
JP2000121232A (en) * 1998-10-20 2000-04-28 Matsushita Refrig Co Ltd Refrigerator
CN2490514Y (en) * 2001-04-13 2002-05-08 伊莱克斯中意(长沙)电冰箱有限公司 Domestic energy-saving refrigeration device with check valve
CN2497245Y (en) * 2001-08-15 2002-06-26 广东科龙电器股份有限公司 Hot-gas defrosting refrigerator
CN1515851A (en) * 2003-01-11 2004-07-28 合肥美菱股份有限公司 Condenser pressure-retaining energy-saving type refrigeration system for refrigerator
JP2005207666A (en) * 2004-01-22 2005-08-04 Toshiba Corp Refrigerator
CN101368784A (en) * 2008-09-09 2009-02-18 广西壮族自治区农业科学院 Ice house high-efficiency electric-heating defrosting device and use method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103292545A (en) * 2013-05-06 2013-09-11 四川长虹电器股份有限公司 Method and device for defrosting and maintaining pressure of refrigerator
CN103591751A (en) * 2013-10-30 2014-02-19 西安交通大学 Defrosting system of air cooling refrigerator and defrosting control method thereof
CN103591751B (en) * 2013-10-30 2016-02-24 西安交通大学 A kind of defrost system of wind cooling refrigerator and defrosting control method thereof
CN105605839A (en) * 2015-12-30 2016-05-25 青岛海尔股份有限公司 Refrigerator and defrosting system thereof
CN105953522A (en) * 2016-05-27 2016-09-21 青岛海尔股份有限公司 Refrigerator defrosting control method
CN105953522B (en) * 2016-05-27 2019-05-03 青岛海尔股份有限公司 A kind of refrigerator defrosting control method
CN109764607A (en) * 2018-12-28 2019-05-17 青岛海尔股份有限公司 The control method of refrigerator
CN109764607B (en) * 2018-12-28 2021-03-23 海尔智家股份有限公司 Control method of refrigerator
CN110530043A (en) * 2019-09-03 2019-12-03 合肥晶弘电器有限公司 The control method of refrigeration system, refrigerator and refrigeration system

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Application publication date: 20130313

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