CN106766525A - Wind cooling refrigerator and its defrosting control method - Google Patents

Wind cooling refrigerator and its defrosting control method Download PDF

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Publication number
CN106766525A
CN106766525A CN201611217960.9A CN201611217960A CN106766525A CN 106766525 A CN106766525 A CN 106766525A CN 201611217960 A CN201611217960 A CN 201611217960A CN 106766525 A CN106766525 A CN 106766525A
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CN
China
Prior art keywords
refrigeration
closed
supply air
evaporator
freezing
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Granted
Application number
CN201611217960.9A
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Chinese (zh)
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CN106766525B (en
Inventor
朱小兵
陶海波
姬立胜
戚斐斐
刘建如
刘昀曦
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Qingdao Haier Co Ltd
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Qingdao Haier Co Ltd
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Priority to CN201611217960.9A priority Critical patent/CN106766525B/en
Publication of CN106766525A publication Critical patent/CN106766525A/en
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Publication of CN106766525B publication Critical patent/CN106766525B/en
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    • 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
    • F25D11/02Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household 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
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06Removing frost
    • F25D21/08Removing frost by electric heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)

Abstract

Present invention is disclosed a kind of wind cooling refrigerator and its defrosting control method.Refrigerator includes, refrigeration system, including the controllably refrigerating evaporator and refrigeration evaporator of access channel;Refrigerating evaporator room and refrigeration evaporator room;Refrigerating chamber and refrigerating chamber;Refrigeration supply air system, for forming circulated air between refrigeration evaporator room and refrigerating chamber;Freezing supply air system, for forming circulated air between refrigerating evaporator room and refrigerating chamber;Two heating units, are respectively arranged at refrigerating evaporator room and refrigeration evaporator room;And control system.Defrosting control method includes step:When startup defrost condition meets, the closing of control refrigeration system, refrigeration, the closing of freezing supply air system, heating unit are opened;After stopping defrost condition meets, control heating unit is closed, refrigerating evaporator works, refrigerate, freezing supply air system is closed, and continued to the first pre-conditioned satisfaction;Control refrigeration system is opened, refrigerated, at least one of freezing supply air system is opened, heating unit is closed.

Description

Wind cooling refrigerator and its defrosting control method
Technical field
The present invention relates to a kind of wind cooling refrigerator and its defrosting control method, belong to household electrical appliance technical field.
Background technology
Frost-free refrigerator is also called indirect cooling refrigerator or wind cooling refrigerator, circulates cold wind forced convection using fan and realizes cold Tibetan, frozen food.In the prior art, frost-free refrigerator has the advantages that cooling rate is fast, but is ceaselessly dried during due to work The moisture evaporation of food can be accelerated, the moisture of evaporation is taken away by cold wind, and freezes in the surface of evaporator when by evaporator And frost layer is formed, influence the heat exchanger effectiveness of evaporator, it is therefore desirable to periodically evaporator is defrosted.
Current frost-free refrigerator, the high-temperature gas produced during evaporator defrost can cause freezer temperature to raise, and increase Big freezer temperature fluctuation, and then influence food storage quality.Therefore, for wind cooling refrigerator, having in the cyclic process that defrosts will The demand that freezer temperature fluctuation is minimized.
The content of the invention
It is an object of the invention to provide a kind of wind cooling refrigerator and its defrosting control method, especially a kind of dual system is air-cooled Refrigerator, can not only realize effective defrost, and can solve defrost process in the prior art and cause what freezer temperature fluctuated Problem.
One of to achieve the above object, one embodiment of the invention provides a kind of wind cooling refrigerator, and the refrigerator includes,
Refrigeration system, forms the path for refrigerant flowing, including refrigerating evaporator and the refrigeration for controllably accessing the path Evaporator;
Casing, limits evaporator room and the refrigerating chamber and refrigerating chamber for storage article, and the evaporator room includes being provided with The refrigerating evaporator room of the refrigerating evaporator and the refrigeration evaporator room for being provided with the refrigeration evaporator;
Refrigeration supply air system, is controllably opened and closed and is used for the shape between the refrigeration evaporator room and the refrigerating chamber when activated Into circulated air;
Freezing supply air system, is controllably opened and closed and is used for the shape between the refrigerating evaporator room and the refrigerating chamber when activated Into circulated air;
Two heating units, are respectively arranged at the refrigerating evaporator room and the refrigeration evaporator room, and heat production when opening;
Control system, is used for:When startup defrost condition meets, the refrigeration system closing, the refrigeration supply air system are controlled Close, the freezing supply air system is closed, two heating units are opened, with respectively to the refrigeration evaporator and described cold Freezing evaporator carries out defrost;After meeting to stopping defrost condition, the heating units of control two are closed, the refrigeration systems Open and make cold-producing medium stream to be closed through the refrigerating evaporator, the refrigeration supply air system, the freezing supply air system is closed, and Continue to the first pre-conditioned satisfaction;The refrigeration system is controlled to open, the refrigeration supply air system and freezing air-supply are At least one of system is opened, two heating units are closed, so that the refrigerator enters refrigeration mode.
Used as the further improvement of one embodiment of the invention, the control system is additionally operable to:When the startup defrost condition When meeting, the refrigeration system is controlled to close, the refrigeration supply air system is opened, the freezing supply air system is opened, two institutes State heating unit closing, and after continuing the first preset time period, control the refrigeration system to close, the refrigeration supply air system is closed Close, the freezing supply air system is closed, two heating units are opened.
Used as the further improvement of one embodiment of the invention, the control system is additionally operable to:In the stopping defrost condition After satisfaction, the heating unit of control two is closed, the refrigeration system is closed, the refrigeration supply air system is closed, described Freezing supply air system is closed, and after continuing the second preset time period, the heating units of control two are closed, the refrigeration systems Open and make cold-producing medium stream to be closed through the refrigerating evaporator, the refrigeration supply air system, the freezing supply air system is closed, and Continue to the described first pre-conditioned satisfaction.
Used as the further improvement of one embodiment of the invention, described first pre-conditioned is set to the refrigerating evaporator Temperature Td removes hot preset temperature less than or equal to defrost, or, described first pre-conditioned is set to the temperature Td less than described cold Freeze the fiducial temperature values of temperature Tf mono- of room, or, described first pre-conditioned is arranged via the 3rd preset time period.
As the further improvement of one embodiment of the invention, when the refrigerator enters the refrigeration mode, the control System is additionally operable to:Control the refrigeration system to open and make cold-producing medium stream through the refrigerating evaporator, the refrigeration supply air system Close, the freezing supply air system is opened, two heating units are closed;When four preset time periods is reached or ought not reach When the temperature Tf of the refrigerating chamber drops to freezing preset temperature to the 4th preset time period, the refrigeration system is controlled Open and make cold-producing medium stream to be opened through the refrigerating evaporator and the refrigeration evaporator, the refrigeration supply air system, it is described cold Freeze supply air system unlatching, two heating units to close;Until the temperature Tr of the refrigerating chamber drops to refrigeration shutdown and presets After temperature and the temperature Tf drop to freezing shutdown preset temperature, terminate the refrigeration mode;
Wherein, the freezing preset temperature is not less than the freezing shutdown preset temperature.
One of to achieve the above object, one embodiment of the invention additionally provides a kind of defrosting control method of wind cooling refrigerator, Methods described includes step:
When startup defrost condition meets, control refrigeration system is closed, refrigeration supply air system is closed, freeze supply air system closes, Two heating units are opened, to carry out defrost to refrigeration evaporator and refrigerating evaporator respectively;
After stopping defrost condition and meeting, two heating units of control are closed, refrigeration system is opened and makes cold-producing medium stream through cold Freeze evaporator, refrigeration supply air system to close, freeze supply air system closing, and continue to the first pre-conditioned satisfaction;
At least one of the unlatching of control refrigeration system, refrigeration supply air system and freezing supply air system is opened, two heating units are closed Close, so that refrigerator enters refrigeration mode.
Used as the further improvement of one embodiment of the invention, the step " when startup defrost condition meets, freeze by control System is closed, refrigeration supply air system is closed, freezing supply air system is closed, two heating units are opened, to be evaporated to refrigeration respectively Device and refrigerating evaporator carry out defrost " include:
When startup defrost condition meets, control refrigeration system is closed, refrigeration supply air system is opened, freeze supply air system opens, Two heating units are closed, and continue the first preset time period;
Control refrigeration system to close, refrigerate supply air system closing, freezing supply air system closing, two heating units are opened, to divide It is other that defrost is carried out to refrigeration evaporator and refrigerating evaporator.
Used as the further improvement of one embodiment of the invention, the step " after stopping defrost condition and meeting, controls two Individual heating unit is closed, refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream, refrigeration supply air system is closed, freezing air-supply System is closed, and is continued to the first pre-conditioned satisfaction " include:
After stopping defrost condition and meeting, two heating units of control are closed, refrigeration system is closed, refrigeration supply air system is closed Close, freeze supply air system closing, and continue the second preset time period;
Two heating units of control are closed, refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream, refrigeration supply air system is closed Close, freeze supply air system closing, and continue to the first pre-conditioned satisfaction.
Used as the further improvement of one embodiment of the invention, described first pre-conditioned is set to the refrigerating evaporator Temperature Td removes hot preset temperature less than or equal to defrost, or, described first pre-conditioned is set to the temperature Td less than described cold Freeze the fiducial temperature values of temperature Tf mono- of room, or, described first pre-conditioned is arranged via the 3rd preset time period.
Used as the further improvement of one embodiment of the invention, the refrigeration mode includes step:
Control refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream, refrigeration supply air system is closed, freezing supply air system is opened Open, two heating units are closed, with to refrigerating chamber cooling;
When four preset time periods is reached or ought not up to described 4th preset time period and the temperature Tf of refrigerating chamber reach it is cold When freezing preset temperature, control refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream and refrigeration evaporator, refrigeration air-supply system System is opened, freezing supply air system is opened, two heating units are closed, with to refrigerating chamber and refrigerating chamber cooling simultaneously;
Temperature Tr to refrigerating chamber drops to the temperature Tf of refrigeration shutdown preset temperature and refrigerating chamber and reaches the default temperature of freezing shutdown After degree, terminate the refrigeration mode;
Wherein, the freezing preset temperature is not less than the freezing shutdown preset temperature.
Compared with prior art, the beneficial effects of the present invention are:The energy-conservation defrost to evaporator can be not only realized, and During defrost, the influence of the temperature to refrigerating chamber and refrigerating chamber can be reduced, reach the temperature fluctuation of refrigerating chamber and refrigerating chamber Small effect.
Brief description of the drawings
Fig. 1 is the structural representation of the refrigerator of one embodiment of the invention;
Fig. 2 is the structural representation of the refrigeration system of one embodiment of the invention;
Fig. 3 is the module diagram of the control system of one embodiment of the invention;
Fig. 4 is the logical flow chart of the defrosting control method of the refrigerator of one embodiment of the invention;
Fig. 5 is the logical flow chart of the refrigeration mode in the defrosting control method of one embodiment of the invention.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these implementation methods are simultaneously The present invention is not limited, structure that one of ordinary skill in the art is made according to these implementation methods, method or functionally Conversion is all contained in protection scope of the present invention.
Referring to Fig. 1 to Fig. 3, one embodiment of the invention provides a kind of refrigerator 100, and the refrigerator 100 is specially a kind of double systems System wind cooling refrigerator, it include casing 10, the storage compartment for storage article, refrigeration system 30, evaporator room, supply air system, Control system 60 and heating unit 70.
The storage compartment is limited by casing 10, including refrigerating chamber 21 and refrigerating chamber 22.The storage temperature of refrigerating chamber 21 sets It is set to cryogenic temperature band(Such as -18 DEG C ~ -16 DEG C), for the freezer storage of food;The storage temperature of refrigerating chamber 22 is set as Refrigerating temperature zone(Such as 5 DEG C ~ 8 DEG C), for the refrigerated storage of food.Certainly, refrigerator 100 can also include removing refrigerating chamber 21 With other storage compartments outside refrigerating chamber 22.
Refrigeration system 30 forms the path for refrigerant flowing, and refrigeration system 30 is at least used to be refrigerating chamber 21 and refrigeration Room 22 provides cold.Specifically, refrigeration system 30 includes controllably accessing that the refrigerating evaporator 331 of the path and refrigeration are evaporated Device 332.Wherein, it is cold when refrigerating evaporator 331 accesses the path, namely when refrigerant can flow through refrigerating evaporator 331 Freezing evaporator 331 can make the air around it be cooled;Accordingly, when refrigeration evaporator 332 accesses the path, namely work as When refrigerant can flow through refrigeration evaporator 332, refrigeration evaporator 332 can make the air around it be cooled.Certainly, freezing and evaporating Device 331 accesses the path and refrigeration evaporator 332 accesses two kinds of situations of the path and do not repel each other, can be according to refrigeration system 30 Concrete structure and set selectivity individually or collectively exist.
Ginseng Fig. 2, in the present embodiment, refrigeration system 30 is specifically configured to series parallel structure, including the compressor being sequentially connected 31st, condenser 32, anti-condensation pipe 34, device for drying and filtering 35, refrigerating evaporator 331.In addition, refrigeration system 30 also includes triple valve 36 and it is arranged in parallel by triple valve 36 cold between the port of export of device for drying and filtering 35 and the arrival end of refrigerating evaporator 331 Freeze branch road and refrigeration branch road.The freezing branch road includes being matched with the freezing capillary 371 of refrigerating evaporator 331, works as triple valve 36 connect it is described freezing branch road when, refrigerant can only flow through the refrigerating evaporator in refrigerating evaporator 331 and refrigeration evaporator 332 331, that is, now refrigeration system 30 is with similar single system mode operation;The refrigeration branch road includes refrigeration capillary 372 and cold Evaporator 332 is hidden, when triple valve 36 connects the refrigeration branch road, refrigerant successively flows through refrigeration evaporator 332 and cold successively Freeze evaporator 331, that is, now refrigeration system 30 is with similar series connection dual system mode operation.
The evaporator room is limited by casing 10, including refrigerating evaporator room 41 independent of each other and refrigeration evaporator room 42.Wherein, refrigerating evaporator 331 is provided with inside refrigerating evaporator room 41, when refrigeration system 30 is opened and refrigerating evaporator 331 connects When entering the path, refrigerating evaporator 331 can make the air in refrigerating evaporator room 41 be cooled to form cold gas;Accordingly , refrigeration evaporator 332 is provided with inside refrigeration evaporator room 42, when refrigeration system 30 is opened and the access of refrigeration evaporator 332 institute When stating path, refrigeration evaporator 332 can make the air in refrigeration evaporator room 42 be cooled to form cold gas.
The gas circuit circulation canal that the supply air system is used to be formed between the storage compartment and the evaporator room is simultaneously real The circulation of existing air-flow.Specifically, the supply air system includes freezing supply air system and refrigeration supply air system.
Wherein, the freezing supply air system is controllably opened and closed, and is used for when activated in refrigerating evaporator room 41 and freezing Circulated air is formed between room 21.When refrigeration system 30 is opened and refrigerating evaporator 331 accesses the path, the freezing is opened Supply air system, can make the cold air formed in refrigerating evaporator room 41 enter refrigerating chamber 21, with to the cooling of refrigerating chamber 21, so as to cold The temperature for freezing room 21 is regulated and controled.Specifically, in the present embodiment, the freezing supply air system includes freezing air channel 511, freezing Blower fan 521 and freezing air door 531.Freezing air channel 511 is used to connect refrigerating evaporator room 41 and refrigerating chamber 21, and forms cooling gas The passage circulated between refrigerating evaporator room 41 and refrigerating chamber 21;Freezing blower fan 521 is arranged at refrigerating evaporator room 41 It is interior, and for promoting the flowing of air to form air-flow;Freezing air door 531 is arranged at freezing air channel 511 and cold for being opened and closed Freeze air channel 511.When opening freezing blower fan 521 and opening freezing air door 531, the freezing supply air system is opened.
Further, in the present embodiment, blower fan mask is set at freezing blower fan 521(It is not shown), the blower fan screening Covering cover has the opening in correspondence freezing air channel 511, and the freezing air door 531 is arranged at the opening, cold to keep or block Freeze blower fan 521 to air-supply in freezing air channel 511.So, the temperature of refrigerating chamber 21 can be reduced and unwillingly is subject to refrigerating evaporator room The influence of the temperature change in 41.
The refrigeration supply air system is controllably opened and closed, and be used for when activated refrigeration evaporator room 42 and refrigerating chamber 22 it Between form circulated air.When refrigeration system 30 is opened and refrigeration evaporator 332 accesses the path, the refrigeration air-supply system is opened System, can make the cold air formed in refrigeration evaporator room 42 enter refrigerating chamber 22, with to the cooling of refrigerating chamber 22, so as to refrigerating chamber 22 Temperature regulated and controled.Specifically, in the present embodiment, the refrigeration supply air system includes refrigeration air channel 512, refrigeration blower fan 522 and refrigeration air door 532.Refrigeration air channel 512 is used to connect refrigeration evaporator room 42 and refrigerating chamber 22, and forms cooling gas in cold Hide the passage circulated between evaporator room 42 and refrigerating chamber 22;Refrigeration blower fan 522 is arranged in refrigeration evaporator room 42, and For promoting the flowing of air to form air-flow;Refrigeration air door 532 is arranged at refrigeration air channel 512 and for being opened and closed refrigeration air channel 512.When opening refrigeration blower fan 522 and opening refrigeration air door 532, the refrigeration supply air system is opened.
Heating unit 70 is set to two, corresponds respectively to refrigerating evaporator 331 and refrigeration evaporator 332.Specifically, its One heating unit 70 is arranged in refrigerating evaporator room 41, its unlatching when can heat production so that the frosting on refrigerating evaporator 331 is melted Change;Another heating unit 70 is arranged in refrigeration evaporator room 42, during its unlatching can heat production so that knot on refrigeration evaporator 332 Frost melts.Two heating units 70 may be configured as being worked with different capacity, be preferably provided at heating in refrigerating evaporator 41 The operating power of unit 70 is relatively large, with the requirement that the defrost intensity for meeting refrigerating evaporator 41 is larger.In one embodiment, Heating unit 70 specifically may be configured as electrical heating wire, and being powered to open and heat production.
Control system 60 is connected with refrigeration system 30, the supply air system, two heating units 70 respectively, and for controlling Refrigeration system processed 30, the supply air system, the opening and closing of two heating units 70, to realize the control of the running status to refrigerator 100 System.
Specifically, control system 60 can control the opening and closing of refrigeration system 30 and control triple valve 36 be selectively turned on it is described Freezing branch road and the refrigeration branch road so that refrigeration system 30 be in different working conditions, single system pattern as escribed above, Series connection dual system pattern, closed mode etc..
Control system 60 also can control the supply air system opening and closing, including control it is described refrigeration supply air system opening and closing with And the opening and closing of the freezing supply air system.For example, in the present embodiment, the controllable fine frozen blower fan 521 of control system 60 opens, cold Freeze air door 531 to open, so that the freezing supply air system is opened, so as to be implemented in shape in refrigerating evaporator room 41 and refrigerating chamber 21 Into circulating current;Or, the also controllable fine frozen blower fan 521 of control system 60 closes, freeze air door 531 closes, so that described cold Freeze supply air system to close, so as to be implemented in refrigerating evaporator room 41 and refrigerating chamber 21 independence and closing relative to each other.
Control system 60 also can control two opening and closings of heating unit 70, and specifically, control system 60 is controllable two Heating unit 70 is connected or cut off with power supply, so as to realize the control whether worked heating unit 70.
Further, referring to Fig. 3, control system 60 include setting module 61, temperature collect module 62, timing module 63, Judge module 64 and control module 65.
Wherein, setting module 61 be used for obtain refrigerator 100 operation various canonical parameters, the canonical parameter include but not It is limited to temperature parameter, time parameter, power parameter, speed parameter etc..In the present embodiment, setting module 61 is used for the mark for obtaining Quasi- parameter at least includes:Freezing start preset temperature Tfon, freezing shutdown preset temperature Tfoff for refrigerating chamber 21;And, Refrigeration start preset temperature Tron, refrigeration shutdown preset temperature Troff for refrigerating chamber 22.Wherein, the freezing start is pre- If temperature Tfon is defined to need to carry out refrigerating chamber 21 cooling to reduce the threshold value of temperature, the freezing shutdown preset temperature Tfoff defines the threshold value for needing to terminate cooling to refrigerating chamber 21, and it is right that the refrigeration start preset temperature Tron defines needs Refrigerating chamber 22 carries out cooling to reduce the threshold value of temperature, and the refrigeration shutdown preset temperature Troff is defined and needed to refrigerating chamber 22 threshold values for terminating cooling.
Temperature collect module 62 includes the freezing sensor 621 being arranged in refrigerating chamber 21, is arranged in refrigerating chamber 22 Refrigerate sensor 622, the freezing defrosting sensor 623 being arranged at refrigerating evaporator 331 and be arranged at refrigeration evaporator Refrigeration defrosting sensor 624 at 332.Wherein, refrigerating evaporator 621 is used for the temperature Tf of Real-time Collection refrigerating chamber 21, so as to Regulate and control in the temperature to refrigerating chamber 21;Refrigeration sensor 622 is used for the temperature Tr of Real-time Collection refrigerating chamber 22, in order to right The temperature of refrigerating chamber 22 is regulated and controled;Freezing defrosting sensor 623 is used to gather the temperature Td of refrigerating evaporator 321;Refrigerationization White sensor 624 is used to gather the temperature Td ' of refrigeration evaporator 322.
Timing module 63 is used to record the time, specifically may be configured as timer.
Judge module 64 is used to receiving the temperature information that temperature collect module 62 collected and timing module 63 is remembered The temporal information of record, and the temperature information, the temporal information and corresponding canonical parameter are compared, sentenced with generating Disconnected result.
Control module 65 be connected to setting module 61, temperature collect module 62, timing module 63, judge module 64 and with set Cover half block 61, temperature collect module 62, timing module 63, judge module 64 carry out information exchange, and control refrigeration system 30, The opening and closing of the supply air system, two heating units 70.
Referring to Fig. 4 to Fig. 5, the defrosting control method of an embodiment, namely defrost process are which illustrated.Below in conjunction with this The concrete structure of the refrigerator 100 of embodiment, the defrosting control method to an embodiment is described.The defrosting control method bag Include:
Step:When startup defrost condition meets, control refrigeration system is closed, refrigeration supply air system is closed, freezes supply air system Close, two heating units are opened, to carry out defrost to refrigeration evaporator and refrigerating evaporator respectively;
Specifically, the startup defrost condition meets and is set to refrigerator 100 changed to defrost process by normal process of refrigerastion Beginning condition, it has various different embodiments.
For example, an implementation method is, the statistics of timing module 63 terminates rear refrigeration system 30 and opens from last defrost process And the accumulated time t5 for running, the startup defrost condition setting reaches the 5th preset time period T5 for the cumulative time t5; Wherein, the 5th preset time period T5 is obtained in advance by setting module 61;The cumulative time t5 of judge module 64 pairs and institute The size for stating the 5th preset time period T5 is compared, if t5 >=T5(Step S101-Y), then it is described to start defrost condition satisfaction, And if t5 < T5(Step S101-N), then it is described startup defrost condition be unsatisfactory for.
Again for example, an implementation method is, the startup defrost condition setting is that the temperature Td is opened less than or equal to defrost Preset temperature Tdon;Wherein, the defrost opens preset temperature Tdon by the acquisition in advance of setting module 61 and Tdon can value -22 ℃;The size that preset temperature Tdon is opened in the temperature Td of judge module 64 pairs and the defrost is compared, if Td≤Tdon (Step S101-Y), then it is described to start defrost condition satisfaction, and if Td > Tdon(Step S101-N), then it is described to start defrost bar Part is unsatisfactory for.
When the startup defrost condition meets(Step S101-Y)When, the control refrigerator 100 of control system 60 starts defrost, ice Case 100 can enter " defrosting state "(Step S104).In the present embodiment, when refrigerator 100 is in the defrosting state, control System 60 control refrigeration system 30 close, it is described refrigeration supply air system close, it is described freezing supply air system close, two heat list Unit 70 opens.So, by closing refrigeration supply air system and the freezing supply air system, refrigerating evaporator room 41 and cold is made Hide evaporator room 42 and form closing space respectively, because the heat that defrost is produced will not enter refrigerating chamber 22 and refrigerating chamber 21, will not The two will not especially be had much impact to refrigerating chamber 21, it is to avoid cause the temperature fluctuation of refrigerating chamber 21.
Step:After stopping defrost condition and meeting, two heating units of control are closed, refrigeration system is opened and makes refrigeration Agent flows through refrigerating evaporator, refrigeration supply air system and closes, freezes supply air system closing, and continues to the first pre-conditioned satisfaction;
Specifically, in the present embodiment, the stopping defrost condition setting terminates preset temperature for the temperature Td more than defrost Tdoff(Step S105);Wherein, the defrost terminates preset temperature Tdoff by the acquisition in advance of setting module 61 and Tdoff can use 8 DEG C of value;The size that the temperature Td of judge module 64 pairs and the defrost terminate preset temperature Tdoff is compared:If Td≤ Tdoff(Step S105-N), then it is described stopping defrost condition be unsatisfactory for, continue executing with step S104;And if Td > Tdoff(Step Rapid S105-Y), then it is described to stop defrost condition satisfaction.
When the stopping defrost condition meets(Step S105-Y)When, the control refrigerator 100 of control system 60 starts removalization White heat production, refrigerator 100 can enter " removing Warm status "(Step S108).In the present embodiment, hot shape is removed described in being in when refrigerator 100 During state, the control of control system 60 refrigeration system 30 is opened and controls triple valve 36 to connect the freezing branch road so that refrigerant only flows Closed through the refrigerating evaporator 331 in two evaporators 331,332, the refrigeration supply air system, the freezing supply air system is closed Close, two heating units 70 are closed.So, Warm status are removed described in being in when refrigerator, by the work of refrigeration system, freezing and evaporating The temperature of device is gradually reduced, and cools down the high-temperature gas of refrigerating evaporator room, so as to avoid high-temperature gas from being made into refrigerating chamber Into freezer temperature fluctuation;Meanwhile, freezing branch road is only turned on, can avoid refrigerating branch road the height while unnecessary caused by being switched on Energy consumption.
Certainly, in other embodiments, the stopping defrost condition including the temperature Td except being more than the defrost knot Outside beam preset temperature Tdoff, may also include the temperature Td ' and terminate preset temperature Tdoff more than the defrost, that is, institute It is Td > Tdoff, Td to state stopping defrost condition ' > Tdoff, so as to the control for realizing closing two heating units 70.For example, In one example, as Td > Tdoff, Td ' when any one is invalid in > Tdoff, control system 60 controls two heating units 70 work, until Td > Tdoff, Td ' > Tdoff are when setting up, then control two heating units 70 to simultaneously close off, Ye Jitong When terminate to refrigerating evaporator 331 and refrigeration evaporator 332 heating defrost;In another example, when Td > Tdoff set up When, the control of control system 60 is individually closed corresponding to the heating unit 70 of refrigerating evaporator 331, when Td ' > Tdoff set up, The control of control system 60 is individually closed corresponding to the heating unit 70 of refrigeration evaporator 332, two heating units 70 basis respectively The temperature conditions of each self-corresponding evaporator is individually controlled, and is finally reached the state of " two heating units 70 are closed ".
Further, it is in the present embodiment, described except Warm status continue to the first pre-conditioned satisfaction referring to Fig. 4.Its In, described first is pre-conditioned with various different embodiments.
For example, an implementation method is, described first pre-conditioned is set to the temperature Td less than or equal to defrost except heat is pre- If temperature Tdset;Wherein, the defrost is except hot preset temperature Tdset is by the acquisition in advance of setting module 61;64 pairs of institutes of judge module Temperature Td and the defrost are stated except the size of hot preset temperature Tdset is compared:If Td≤Tdset(Step S109-Y), then The first pre-conditioned satisfaction;And if Td > Tdset(Step S109-N), then described first pre-conditioned it is unsatisfactory for.Wherein, The defrost is set to no more than described freezing start preset temperature Tfon except hot preset temperature Tdset, can so ensure refrigerator 100 is sufficiently low into the temperature Td of refrigerating evaporator 331 before follow-up " refrigeration mode ", it is to avoid high-heat environment draws high freezing The temperature of room 21.
Again for example, an implementation method is, described first pre-conditioned is set to the temperature Td less than the temperature Tf mono- Fiducial temperature value △ T;Wherein, the fiducial temperature value △ T are obtained in advance by setting module 61 and △ T can be in 2 ~ 3 DEG C of scope Value;The size of judge module 64 pairs the temperature Td and temperature Tf- △ T is compared:If Td≤Tf- △ T(Step S109- Y), then the described first pre-conditioned satisfaction, and if Td > Tf- △ T(Step S109-N), then described first is pre-conditioned discontented Foot.So, by the way that the temperature Td of refrigerating evaporator 331 to be decreased below the temperature Tf of refrigerating chamber 21, can effectively ensure that freezing The temperature stability of room 21.
Again for example, an implementation method is, after refrigerator 100 removes Warm status described in, timing module 63 counts described except hot The duration t3 of state, described first pre-conditioned be set to the time t3 and reach the 3rd preset time period T3;Wherein, institute State that the 3rd preset time period T3 is obtained in advance by setting module 61 and T3 can be in value in 3 ~ 5min of scope;64 pairs of institutes of judge module The size for stating time t3 and the 3rd preset time period T3 is compared:If t3 >=T3(Step S109-Y), then described first Pre-conditioned satisfaction, and if t3 < T3(Step S109-N), then described first pre-conditioned it is unsatisfactory for.
Step:The unlatching of at least one, two systems of supply air system and freezing supply air system are opened, refrigerated to control refrigeration system Hot cell is closed, so that refrigerator enters refrigeration mode.
Specifically, the control of control module 65 refrigerator 100 enters " refrigeration mode "(Step S110), so that will be warm because of defrost The temperature for spending elevated refrigerating chamber 22 and refrigerating chamber 21 is turned down in time.
After the completion of the refrigeration mode, control refrigerator 100 enters " stopped status "(Step S111), and then complete this Defrost process.Specifically, when refrigerator 100 is in the stopped status, the control of control system 60 refrigeration system 30 is closed, institute State the closing of refrigeration supply air system, the freezing supply air system is closed, two heating units 70 are closed.
The defrosting control method of the refrigerator of the present embodiment, by, except heat, making defrost process pair after totally-enclosed defrost and defrost The temperature influence of refrigerating chamber and refrigerating chamber is smaller, it is to avoid temperature fluctuation, to ensure the preferable environment that food is stored.
Further, in the present embodiment, the step " when starting defrost condition and meeting, control refrigeration system closes, Refrigeration supply air system is closed, freezing supply air system is closed, two heating units are opened, with respectively to refrigeration evaporator and frozen steamed Hair device carries out defrost " specifically include:
Step:When startup defrost condition meets, control refrigeration system is closed, refrigeration supply air system is opened, freezes supply air system Open, two heating units are closed, and continue the first preset time period;
Step:Control refrigeration system is closed, refrigeration supply air system is closed, freezing supply air system is closed, two heating units are opened, To carry out defrost to refrigeration evaporator and refrigerating evaporator respectively.
Specifically, when the startup defrost condition meets(Step S101-Y)When, control module 65 first controls refrigerator 100 to enter Enter " pre-defrost state "(Step S102).In the present embodiment, when refrigerator 100 is in the pre-defrost state, control system 60 Control refrigeration system 30 close, it is described refrigeration supply air system and the freezing supply air system at least it is described freezing supply air system open Open, two heating units 70 are closed.That is, the pre-defrost state has two kinds of different embodiments, first, control system System 60 controls refrigeration system 30 to close, the refrigeration supply air system is opened, the freezing supply air system is opened, two heating units 70 close;Another, the control of control system 60 refrigeration system 30 is closed, the refrigeration supply air system is opened, the freezing air-supply system System is opened, two heating units 70 are closed.So, not only using the waste cold point of refrigerating evaporator 331, refrigeration evaporator 332 The other temperature to refrigerating chamber 21, refrigerating chamber 22 regulates and controls, but also using the thermal current realization of refrigerating chamber 21, refrigerating chamber 22 The effect of preliminary defrost, tool energy-saving consumption-reducing and defrost humidification.
As refrigerator 100 enters the pre-defrost state, timing module 63 is synchronous to count continuing for the pre-defrost state Time t1;Setting module 61 is obtained in advance has first the preset time period T1, T1 corresponding with the time t1 can value 3min; Judge module 64 compares the magnitude relationship of the time t1 and the first preset time period T1(Step S103):As t1 < T1 (Step S103-N)When, continue to keep the pre-defrost state, as t1 >=T1(Step S103-Y)When, the control ice of control module 65 Case 100 enters " defrost state ".
Further, the step " after stopping defrost condition and meeting, close, refrigeration system by two heating units of control System is opened and makes the chilled evaporator of cold-producing medium stream, refrigeration supply air system is closed, freezing supply air system is closed, and continued to first Pre-conditioned satisfaction " is specifically included:
Step:After stopping defrost condition and meeting, two heating units of control are closed, refrigeration system is closed, refrigeration air-supply system System is closed, freezing supply air system is closed, and continues the second preset time period;
Step:Two heating units of control are closed, refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream, refrigeration air-supply system System is closed, freezing supply air system is closed, and continued to the first pre-conditioned satisfaction.
Specifically, that is to say, that when the stopping defrost condition meets(Step S105-Y)When, control module 65 is first controlled Refrigerator 100 enters " stopped status "(Step S106), and after maintaining the second preset time period T2 described in the stopped status one, then Control refrigerator 100 enters " removing Warm status "(Step S108).
When refrigerator 100 is in the stopped status, the duration of the synchronous statistics stopped status of timing module 63 t2;Setting module 61 obtains the second preset time period T2 in advance, and T2 can be in value in 3 ~ 5min of scope;Judge module 64 compares The magnitude relationship of the time t2 and the second preset time period T2(Step S107):As t2 < T2(Step S107-N)When, Continue to keep the stopped status, as t2 >=T2(Step S107-Y)When, the control refrigerator 100 of control module 65 enters described except heat State.So, during maintaining the second preset time period T2 described in the stopped status one, originally because of heating defrost caused by The problem of the pressure imbalance/mutation of the path inner refrigerant is eased, it is to avoid immediately entered after " defrosting state " " except heat State " and the compressor damage that causes, can play a part of to protect compressor.
Further, referring to Fig. 5, in the present embodiment, the refrigeration mode includes:
Step:Control refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream, refrigeration supply air system is closed, freezing air-supply system System is opened, two heating units are closed, with to refrigerating chamber cooling;
Specifically, the control of control module 65 refrigerator 100 enters " freezing refrigerating state "(Step S201), the freezing refrigerating state It is set to:Control module 65 control refrigeration system 30 open and control triple valve 36 connect it is described freezing branch road so that refrigerant only Flow through refrigerating evaporator 331, refrigeration supply air system closing, the freezing supply air system in two evaporators 331,332 Open, two heating units 70 are closed, with to the cooling of refrigerating chamber 21, so as to reduce the temperature of refrigerating chamber 21.
Step:When four preset time periods is reached or ought not up to described 4th preset time period and the temperature of refrigerating chamber Tf reach freezing preset temperature value when, control refrigeration system open and make the chilled evaporator of cold-producing medium stream and refrigeration evaporator, Refrigeration supply air system is opened, freezing supply air system is opened, two heating units are closed, and is supplied simultaneously with to refrigerating chamber and refrigerating chamber It is cold;
Specifically, when refrigerator 100 enters the freezing refrigerating state, the synchronous statistics freezing refrigerating state of timing module 63 Duration t4.With the continuation of the freezing refrigerating state, namely with the increase of the time t4, the temperature Tf by Gradually decline.
Judge module 64 judges whether the time t4 reaches the 4th preset time period T4(Step S202), wherein, it is described 4th preset time period T4 is obtained by setting module 61 and T4 can be in value in 5 ~ 10min of scope.As t4 >=T4(Step S202- Y)When, the control refrigerator 100 of control module 65 enters " synchronous refrigerating state "(Step S204);As t4 < T4(Step S202-N) When, judge module 64 judges whether the temperature Tf drops to freezing preset temperature Tfset(Step S203), wherein, it is described cold Freeze preset temperature Tfset to be obtained in advance by setting module 61.As Tf > Tfset(Step S203-N)When, control module 65 is controlled Refrigerator 100 continues to keep the freezing refrigerating state;As Tf≤Tfset(Step S203-Y)When, the control refrigerator of control module 65 100 enter " synchronous refrigerating state "(Step S204).
That is, as t4 >=T4, or, as t4 < T4 during Tf≤Tfset, the control refrigerator 100 of control module 65 Into " synchronous refrigerating state "(Step S204).In the present embodiment, the synchronous refrigerating state is set to:Control module 65 is controlled Refrigeration system 30 is opened and controls triple valve 36 to connect the refrigeration branch road so that the chilled evaporator 331 of cold-producing medium stream and refrigeration Evaporator 332, the refrigeration supply air system are opened, the freezing supply air system is opened, two heating units are closed, with to freezing Room 21 and refrigerating chamber 22 are while cooling.
Step:Temperature Tr to refrigerating chamber drops to refrigeration shutdown preset temperature and the temperature Tf of refrigerating chamber drops to freezing After shutdown preset temperature, terminate the refrigeration mode;
Specifically, continuing with the synchronous refrigerating state, the temperature Tr and the equal continuous decreases of temperature Tf.When described Temperature Tr≤refrigeration shutdown preset temperature the Troff(Step S205-Y), and, the temperature Tf≤freezing shutdown is default Temperature Tfoff(Step S207-Y)Afterwards, the refrigeration mode is terminated, control refrigerator 100 enters the stopped status, this defrost Process is completed.
Wherein, the freezing preset temperature Tfset is not less than the freezing shutdown preset temperature Tfoff.
So, refrigerating chamber first passes through the preliminary cooling of the freezing refrigerating state, then by the synchronous refrigerating state Lower the temperature again, the duration that refrigeration system is opened and run, energy-saving consumption-reducing can be reduced, and avoid refrigerating chamber from being dropped because of freezing refrigerating state The too low phenomenon for causing freezer temperature after synchronous refrigerating state too low of temperature, namely avoid excessive energy consumption.
Further, " the temperature Tr to refrigerating chamber drops to the temperature of refrigeration shutdown preset temperature and refrigerating chamber to the step After degree Tf drops to freezing shutdown preset temperature, terminate the refrigeration mode " specifically include:
Step:To refrigerating chamber temperature Tr drop to refrigeration shutdown preset temperature when, control refrigeration system open and make refrigerant Refrigerating evaporator, refrigeration supply air system is flowed through to close, supply air system unlatching, two heating units closings are freezed, with to refrigerating chamber Cooling;
Specifically, namely as Tr≤Troff(Step S205-Y)When, the control refrigerator 100 of control module 65 terminates the synchronous system Cold state and enter the freezing refrigerating state(Step S206).
Step:Judge whether the temperature Tf reaches freezing shutdown preset temperature, if so, then terminating the refrigeration mode; If not and the temperature Tr more than refrigeration start preset temperature, then return to step " control refrigeration system open and make cold-producing medium stream Chilled evaporator and refrigeration evaporator, refrigeration supply air system are opened, freezing supply air system is opened, two heating units are closed, With to refrigerating chamber and refrigerating chamber cooling simultaneously ";
Specifically, with the freezing refrigerating state(Step S206)Continue, the temperature Tf is persistently reduced, judge module 64 Compare the magnitude relationship of the temperature Tf and the freezing shutdown preset temperature Tfoff(Step S207), as Tf > Tfoff(Step Rapid S207-N)When, judge module 64 compares the magnitude relationship of the temperature Tr and the refrigeration start preset temperature Tron(Step S208).
Further, if step S208 is judged as Y, the control refrigerator 100 of control module 65 returns to step S204;If step Rapid S208 is judged as N, and the control refrigerator 100 of control module 65 continues to keep the freezing refrigerating state, until working as Tf≤Tfoff (Step S207-Y)When, terminating the refrigeration mode, control refrigerator 100 enters the stopped status, and this defrost process is completed.
Compared with prior art, the beneficial effects of the present invention are:The energy-conservation defrost to evaporator can be not only realized, and During defrost, the influence of the temperature to refrigerating chamber and refrigerating chamber can be reduced, reach the temperature fluctuation of refrigerating chamber and refrigerating chamber Small effect.
It should be understood that, although the present specification is described in terms of embodiments, but not each implementation method only includes one Individual independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art will should say Used as an entirety, technical scheme in each implementation method can also be through appropriately combined, and forming those skilled in the art can for bright book With the other embodiment for understanding.
Those listed above describes illustrating only for feasibility implementation method of the invention in detail, and they are simultaneously It is not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention or change all should It is included within protection scope of the present invention.

Claims (10)

1. a kind of wind cooling refrigerator, it is characterised in that the refrigerator includes,
Refrigeration system, forms the path for refrigerant flowing, including refrigerating evaporator and the refrigeration for controllably accessing the path Evaporator;
Casing, limits evaporator room and the refrigerating chamber and refrigerating chamber for storage article, and the evaporator room includes being provided with The refrigerating evaporator room of the refrigerating evaporator and the refrigeration evaporator room for being provided with the refrigeration evaporator;
Refrigeration supply air system, is controllably opened and closed and is used for the shape between the refrigeration evaporator room and the refrigerating chamber when activated Into circulated air;
Freezing supply air system, is controllably opened and closed and is used for the shape between the refrigerating evaporator room and the refrigerating chamber when activated Into circulated air;
Two heating units, are respectively arranged at the refrigerating evaporator room and the refrigeration evaporator room, and heat production when opening;
Control system, is used for:When startup defrost condition meets, the refrigeration system closing, the refrigeration supply air system are controlled Close, the freezing supply air system is closed, two heating units are opened, with respectively to the refrigeration evaporator and described cold Freezing evaporator carries out defrost;After meeting to stopping defrost condition, the heating units of control two are closed, the refrigeration systems Open and make cold-producing medium stream to be closed through the refrigerating evaporator, the refrigeration supply air system, the freezing supply air system is closed, and Continue to the first pre-conditioned satisfaction;The refrigeration system is controlled to open, the refrigeration supply air system and freezing air-supply are At least one of system is opened, two heating units are closed, so that the refrigerator enters refrigeration mode.
2. wind cooling refrigerator according to claim 1, it is characterised in that the control system is additionally operable to:When the startupization When ice-lolly part meets, control the refrigeration system to close, the refrigeration supply air system is opened, the freezing supply air system is opened, Two heating units are closed, and after continuing the first preset time period, control the refrigeration system to close, the refrigeration air-supply System is closed, the freezing supply air system is closed, two heating units are opened.
3. wind cooling refrigerator according to claim 1, it is characterised in that the control system is additionally operable to:In the stoppingization After ice-lolly part meets, the heating unit of control two is closed, the refrigeration system is closed, the refrigeration supply air system is closed Close, the freezing supply air system is closed, and after continuing the second preset time period, the heating units of control two close, described Refrigeration system is opened and cold-producing medium stream is closed through the refrigerating evaporator, the refrigeration supply air system, the freezing air-supply system System is closed, and is continued to the described first pre-conditioned satisfaction.
4. wind cooling refrigerator according to claim 1, it is characterised in that described first pre-conditioned is set to the frozen steamed The temperature Td for sending out device removes hot preset temperature less than or equal to defrost, or, described first pre-conditioned be set to the temperature Td and be less than The fiducial temperature values of temperature Tf mono- of the refrigerating chamber, or, described first pre-conditioned is arranged via the 3rd preset time period.
5. wind cooling refrigerator according to claim 1, it is characterised in that when the refrigerator enters the refrigeration mode, institute Control system is stated to be additionally operable to:Control the refrigeration system to open and cold-producing medium stream is sent through the refrigerating evaporator, the refrigeration Wind system is closed, the freezing supply air system is opened, two heating units are closed;When four preset time periods is reached or When the temperature Tf of not up to described 4th preset time period and the refrigerating chamber drops to freezing preset temperature, the system is controlled Cooling system opens and cold-producing medium stream is opened through the refrigerating evaporator and the refrigeration evaporator, the refrigeration supply air system, The freezing supply air system is opened, two heating units are closed;Until the temperature Tr of the refrigerating chamber drops to refrigeration and closes After machine preset temperature and the temperature Tf drop to freezing shutdown preset temperature, terminate the refrigeration mode;
Wherein, the freezing preset temperature is not less than the freezing shutdown preset temperature.
6. a kind of defrosting control method of wind cooling refrigerator, it is characterised in that methods described includes step:
When startup defrost condition meets, control refrigeration system is closed, refrigeration supply air system is closed, freeze supply air system closes, Two heating units are opened, to carry out defrost to refrigeration evaporator and refrigerating evaporator respectively;
After stopping defrost condition and meeting, two heating units of control are closed, refrigeration system is opened and makes cold-producing medium stream through cold Freeze evaporator, refrigeration supply air system to close, freeze supply air system closing, and continue to the first pre-conditioned satisfaction;
At least one of the unlatching of control refrigeration system, refrigeration supply air system and freezing supply air system is opened, two heating units are closed Close, so that refrigerator enters refrigeration mode.
7. defrosting control method according to claim 6, it is characterised in that the step " meets when defrost condition is started When, control refrigeration system is closed, refrigeration supply air system is closed, freezing supply air system is closed, two heating units are opened, with respectively Defrost is carried out to refrigeration evaporator and refrigerating evaporator " include:
When startup defrost condition meets, control refrigeration system is closed, refrigeration supply air system is opened, freeze supply air system opens, Two heating units are closed, and continue the first preset time period;
Control refrigeration system to close, refrigerate supply air system closing, freezing supply air system closing, two heating units are opened, to divide It is other that defrost is carried out to refrigeration evaporator and refrigerating evaporator.
8. defrosting control method according to claim 6, it is characterised in that the step " meets in defrost condition is stopped Afterwards, two heating units are controlled to close, refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream, refrigeration supply air system is closed Close, freeze supply air system closing, and continue to the first pre-conditioned satisfaction " include:
After stopping defrost condition and meeting, two heating units of control are closed, refrigeration system is closed, refrigeration supply air system is closed Close, freeze supply air system closing, and continue the second preset time period;
Two heating units of control are closed, refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream, refrigeration supply air system is closed Close, freeze supply air system closing, and continue to the first pre-conditioned satisfaction.
9. defrosting control method according to claim 6, it is characterised in that described first pre-conditioned is set to frozen steamed The temperature Td for sending out device removes hot preset temperature less than or equal to defrost, or, described first pre-conditioned be set to the temperature Td and be less than The fiducial temperature values of temperature Tf mono- of the refrigerating chamber, or, described first pre-conditioned is arranged via the 3rd preset time period.
10. defrosting control method according to claim 6, it is characterised in that the refrigeration mode includes step:
Control refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream, refrigeration supply air system is closed, freezing supply air system is opened Open, two heating units are closed, with to refrigerating chamber cooling;
When four preset time periods is reached or ought not up to described 4th preset time period and the temperature Tf of refrigerating chamber reach it is cold When freezing preset temperature, control refrigeration system is opened and makes the chilled evaporator of cold-producing medium stream and refrigeration evaporator, refrigeration air-supply system System is opened, freezing supply air system is opened, two heating units are closed, with to refrigerating chamber and refrigerating chamber cooling simultaneously;
Temperature Tr to refrigerating chamber drops to the temperature Tf of refrigeration shutdown preset temperature and refrigerating chamber and reaches the default temperature of freezing shutdown After degree, terminate the refrigeration mode;
Wherein, the freezing preset temperature is not less than the freezing shutdown preset temperature.
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