CN101963437A - Defrosting control system and control method of refrigerator - Google Patents

Defrosting control system and control method of refrigerator Download PDF

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Publication number
CN101963437A
CN101963437A CN 201010289250 CN201010289250A CN101963437A CN 101963437 A CN101963437 A CN 101963437A CN 201010289250 CN201010289250 CN 201010289250 CN 201010289250 A CN201010289250 A CN 201010289250A CN 101963437 A CN101963437 A CN 101963437A
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CN
China
Prior art keywords
refrigerating chamber
refrigerator
air inlet
temperature
evaporator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201010289250
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Chinese (zh)
Inventor
宋志红
常见虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Ronshen Guangdong Refrigerator Co Ltd
Original Assignee
Hisense Ronshen Guangdong Refrigerator Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisense Ronshen Guangdong Refrigerator Co Ltd filed Critical Hisense Ronshen Guangdong Refrigerator Co Ltd
Priority to CN 201010289250 priority Critical patent/CN101963437A/en
Priority to PCT/CN2010/078183 priority patent/WO2012034299A1/en
Publication of CN101963437A publication Critical patent/CN101963437A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002Defroster control
    • F25D21/006Defroster control with electronic control circuits
    • 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
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/12Sensors measuring the inside temperature
    • F25D2700/121Sensors measuring the inside temperature of particular compartments
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/12Sensors measuring the inside temperature
    • F25D2700/122Sensors measuring the inside temperature of freezer compartments
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/14Sensors measuring the temperature outside the refrigerator or freezer

Abstract

The invention relates to a defrosting control system and a defrosting control method of a refrigerator. The system comprises a controller, a circulating fan, and a defrosting temperature sensor, a refrigerating chamber temperature sensor, a freezing chamber temperature sensor and an environmental temperature sensor connected with the controller, wherein the circulating fan is arranged beside a refrigerator evaporator; an air flue where the circulating fan is positioned is provided with a freezing chamber air inlet and a refrigerating chamber air inlet, and the air inlets are provided with a freezing chamber air inlet electric air door and a refrigerating chamber air inlet electric air door respectively; the air flue where the other side of the refrigerator evaporator corresponding to the circulating fan is positioned is provided with a freezing chamber return air port and a refrigerating chamber return air port; and the freezing chamber return air port is provided with a freezing chamber return air port electric air door. Refrigeration and defrosting are controlled by controlling the electric air doors of each air port and the circulating fan so as to save electrical energy, avoid generating continuous high temperature to affect the temperature of the refrigerator and reduce the energy consumption; and the refrigerator evaporator is defrosted through relative hot air of the refrigerating chamber by using the temperature difference between the refrigerating chamber and the refrigerator evaporator, so the energy utilization rate is high and the energy consumption is saved.

Description

A kind of defroster control system and control method thereof
Technical field
The present invention relates to the technical field of refrigerator in the electric equipment, especially relate to a kind of defroster control system and control method thereof.
Background technology
One deck frost can be tied in a period of time finisher of refrigerator operation generally surface, and this frost layer can influence the heat exchange of air in evaporimeter and the frost, reduces refrigerating efficiency, so refrigerator must defrost after operation a period of time.The defroster of general refrigerator comprises evaporimeter, defrosting heating tube, drip tray heating tube, defrosting temperature sensor, high temperature fuse, refrigerator controller.After the defrost process of general refrigerator was the refrigerator work certain hour, refrigerator controller was connected the defrosting heating tube, and defrosting heating tube work is until the frost layer of evaporimeter dissolves, and defrost water is discharged from drip tray and drainpipe, and defrost process finishes.During this time because the defrosting heating tube heats for a long time, and heating tube power is big, not only consumed energy but also wasted the original cold of evaporimeter, it is excessive that temperature is risen, and causes energy consumption of refrigerator to increase.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of utilize temperature difference and heat exchange, not only to evaporator defrost but also to the defroster control system and the control method thereof of refrigerating chamber refrigeration, to solve the energy consumption of refrigerator in defrost process and the problem of cold waste.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of defroster control system, comprise circulating fan, controller, the defrosting temperature sensor that is connected with controller, refrigerator temperature sensor, freezer temperature sensor and environment temperature sensor, circulating fan is located at the side of evaporator of refrigerator, the air channel of circulating fan position is provided with refrigerating chamber air inlet and refrigerating chamber air inlet, refrigerating chamber air inlet place is provided with refrigerating chamber air inlet MOD and refrigerating chamber air inlet place is provided with refrigerating chamber air inlet MOD, the air channel at the corresponding circulating fan opposite side of evaporator of refrigerator place is provided with refrigerating chamber return air inlet and refrigerating chamber return air inlet, and the refrigerating chamber return air inlet is provided with refrigerating chamber return air inlet MOD.
Described defroster control system also comprises the electric heater that is connected with controller, and described electric heater is embedded on the evaporator of refrigerator.
Described defrosting temperature sensor is located on the evaporator of refrigerator.
Described refrigerator temperature sensor is located in the refrigerating chamber.
Described cryogenic temperature sensor) is located in the refrigerating chamber.
Described environment temperature sensor is located at the refrigerator top.
The control method of above-mentioned defroster control system comprises the following steps:
Step 1: the refrigerator refrigeration that powers on, controller detects temperature of refrigerating chamber and freezer temperature separately by refrigerator temperature sensor and freezer temperature sensor, and, judge whether each chamber requires refrigeration according to user's refrigeration design temperature Tr0 and freezing design temperature Tf0; When refrigerating chamber and refrigerating chamber all require to freeze, controller control refrigerating chamber air inlet MOD, refrigerating chamber return air inlet MOD and refrigerating chamber air inlet MOD are all opened, freezer compressor work refrigeration, circulating fan work, kind of refrigeration cycle wind is by normal circulation circuit cycle refrigeration, refrigerating chamber and refrigerating chamber all freeze, when freezing to temperature of refrigerating chamber T1-a>refrigeration design temperature Tr0, controller control refrigerating chamber air inlet MOD is closed, refrigerating chamber stops refrigeration, and refrigerating chamber continues to freeze to shutdown temperature T3, and freezer compressor is shut down;
Step 2: when refrigerator meets self-loopa wind defrosting condition, enter self-loopa wind defrost process: this moment, controller was controlled refrigerating chamber air inlet MOD and refrigerating chamber return air inlet MOD) close, control refrigerating chamber air inlet MOD and circulating fan are opened, circulated air circulates to refrigerating chamber by evaporator of refrigerator, because of the temperature difference of evaporator of refrigerator and refrigerating chamber big, hot-air by refrigerating chamber defrosts to evaporator of refrigerator, the cold of evaporator of refrigerator freezes and humidification to refrigerating chamber again simultaneously, temperature up to defrosting temperature sensor or refrigerator temperature sensor or freezer temperature sensor detection meets self-loopa defrosting exit criteria, then withdraw from the self-loopa defrosting, then by normal refrigeration control;
Step 3: in step 2, controller is accumulated the freezer compressor continuous operating time, and when the accumulation of freezer compressor continuous operating time reaches t1, and freezer temperature is greater than Tf0; Or work as environment temperature less than 0 ℃, when the compressor operating time accumulation reaches t2, controller closing refrigerator compressor, circulating fan, refrigerating chamber air inlet MOD, refrigerating chamber return air inlet MOD and refrigerating chamber air inlet MOD, defrosting is assisted in the electric heater work of opening in the evaporator of refrigerator, when the defrosting temperature sensor detects the evaporator of refrigerator temperature and is T2, then withdraw from auxiliary defrosting.
The control method of above-mentioned defroster control system is characterized in that: the described a of step 1 is 1~5 ℃, shutdown temperature T3<Tf 0, 12 ℃-23 ℃ of Tf0 scopes.
The control method of above-mentioned defroster control system is characterized in that: the described self-loopa defrosting of step 2 condition is T2<0 ℃ for the evaporator of refrigerator temperature, temperature of refrigerating chamber>Tr0 and compressor shutdown; Self-loopa defrosting exit criteria is T2>0 ℃ for the evaporator of refrigerator temperature, temperature of refrigerating chamber T1<0 ℃, and freezer temperature is greater than Tf0+b; 2 ℃-6 ℃ of the scopes of b.
The control method of above-mentioned defroster control system is characterized in that: the described t1 of step 3 is 4~8 hours, and t2 is 8~15 hours, and the evaporator of refrigerator temperature is that T2 is 4~10 ℃
The present invention with respect to the beneficial effect of prior art is:
Design feature of the present invention is refrigerating chamber air inlet and return air inlet, and the refrigerating chamber air inlet all is equipped with controllable MOD; Self-loopa wind defrost process is to control refrigeration and defrosting by the MOD of controlling each air port and circulating fan, self-loopa wind defrosting does not use the electric heater defrosting not only to save electric energy but also can not produce continuous high temperature usually influences refrigerator temperature, refrigerator temperature gos up little, cuts down the consumption of energy; The present invention also utilizes the temperature difference of refrigerating chamber and evaporator of refrigerator, relatively hot air by refrigerating chamber defrosts to evaporator of refrigerator, and the cold air of evaporator of refrigerator freezes and humidification to refrigerating chamber simultaneously, not only defrosts but also freeze, efficiency utilization rate height is saved energy consumption.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is that control system structure of the present invention is formed schematic diagram;
Fig. 2 is a control method flow chart of the present invention;
Fig. 3 is a control system composition frame chart of the present invention.
The specific embodiment
Fig. 1, Fig. 3 is respectively control system structure of the present invention and forms schematic diagram and composition frame chart, comprise circulating fan 1, controller 9, the defrosting temperature sensor 6 that is connected with controller 9, refrigerator temperature sensor 7, freezer temperature sensor 8 and environment temperature sensor 12, circulating fan 1 is installed in the side of evaporator of refrigerator 2, be located at the back of evaporator of refrigerator 2 as figure, the air channel of circulating fan 1 back is divided into refrigerating chamber air inlet and refrigerating chamber air inlet, refrigerating chamber air inlet and refrigerating chamber air inlet place install refrigerating chamber air inlet MOD 3 and refrigerating chamber air inlet MOD 4 respectively, air channel, evaporator of refrigerator 2 front is provided with refrigerating chamber return air inlet and refrigerating chamber return air inlet, and the refrigerating chamber return air inlet is equipped with refrigerating chamber return air inlet MOD 5.Control system of the present invention also comprises the electric heater 11 that is connected with controller 9, this electric heater 11 is embedded on the evaporator of refrigerator 2, refrigerator temperature sensor 7 is installed in the refrigerating chamber, cryogenic temperature sensor 8 is installed in the refrigerating chamber, the work of controller 9 control circulating fans 1 and freezer compressor 10, the below of evaporator of refrigerator 2 is provided with the drip tray of discharging defrost water.
Fig. 2 is a control method flow chart of the present invention, comprises the following steps:
Step 1: the refrigerator refrigeration that powers on, controller 9 detects temperature of refrigerating chamber and freezer temperature separately by refrigerator temperature sensor 7 and freezer temperature sensor 8, and, judge whether each chamber requires refrigeration according to user's refrigeration design temperature Tr0 and freezing design temperature Tf0; When refrigerating chamber and refrigerating chamber all require to freeze, controller 9 control refrigerating chamber air inlet MODs 3, refrigerating chamber return air inlet MOD 5 and refrigerating chamber air inlet MOD 4 are all opened, freezer compressor 10 work refrigeration, circulating fan 1 work, kind of refrigeration cycle wind is by normal circulation circuit cycle refrigeration, refrigerating chamber and refrigerating chamber all freeze, when freezing to temperature of refrigerating chamber T1-a>refrigeration design temperature Tr0, controller 9 control refrigerating chamber air inlet MODs 4 are closed, refrigerating chamber stops refrigeration, and refrigerating chamber continues to freeze to shutdown temperature T3, and freezer compressor 10 is shut down; Wherein a is 1~5 ℃, shutdown temperature T3<Tf 0, 12 ℃-23 ℃ of Tf0 scopes.
Step 2: self-loopa wind defrost process: self-loopa defrosting condition includes but not limited to evaporator temperature<0 ℃, temperature of refrigerating chamber>Tr0, compressor shutdown etc., when refrigerator meets self-loopa wind defrosting condition, refrigerator enters self-loopa wind defrost process: this moment, controller 9 control refrigerating chamber air inlet MODs 3 and refrigerating chamber return air inlet MOD 5 were closed, control refrigerating chamber air inlet MOD 4 and circulating fan 1 are opened, circulated air circulates to refrigerating chamber by evaporator of refrigerator 2, because of evaporator of refrigerator 2 big with the temperature difference of refrigerating chamber, hot-air by refrigerating chamber defrosts to evaporator of refrigerator 2, the cold of evaporator of refrigerator 2 freezes and humidification to refrigerating chamber again simultaneously, temperature up to defrosting temperature sensor 6 or refrigerator temperature sensor 7 or freezer temperature sensor 8 detections meets self-loopa defrosting exit criteria, then withdraw from the self-loopa defrosting, then by normal refrigeration control; Self-loopa defrosting exit criteria is that evaporator of refrigerator 2 temperature are T2>0 ℃, temperature of refrigerating chamber T1<0 ℃, and freezer temperature is greater than Tf0+b; 2 ℃-6 ℃ of the scopes of b.
Step 3: in step 2,9 pairs of freezer compressor 10 continuous operating times of controller are accumulated, and when the accumulation of freezer compressor 10 continuous operating times reaches t1, and freezer temperature is greater than Tf0; Or work as environment temperature less than 0 ℃, when the compressor operating time accumulation reaches t2, controller 9 closing refrigerator compressors 10, circulating fan 1, refrigerating chamber air inlet MOD 3, refrigerating chamber return air inlet MOD 5 and refrigerating chamber air inlet MOD 4, defrosting is assisted in electric heater 11 work of opening in the evaporator of refrigerator 2, when defrosting temperature sensor 6 detects evaporator of refrigerator 2 temperature and is T2, then withdraw from auxiliary defrosting.T1 is 4~8 hours, and t2 is 8~15 hours, and evaporator of refrigerator 2 temperature are that T2 is 4~10 ℃.

Claims (10)

1. defroster control system, comprise controller (9), the defrosting temperature sensor (6) that is connected with controller (9), it is characterized in that: also comprise circulating fan (1), the refrigerator temperature sensor (7) that is connected with controller (9), freezer temperature sensor (8) and environment temperature sensor (12), circulating fan (1) is located at the side of evaporator of refrigerator (2), the air channel of circulating fan (1) position is provided with refrigerating chamber air inlet and refrigerating chamber air inlet, refrigerating chamber air inlet place is provided with refrigerating chamber air inlet MOD (3) and refrigerating chamber air inlet place is provided with refrigerating chamber air inlet MOD (4), the air channel at the corresponding circulating fan of evaporator of refrigerator (2) (1) opposite side place is provided with refrigerating chamber return air inlet and refrigerating chamber return air inlet, and the refrigerating chamber return air inlet is provided with refrigerating chamber return air inlet MOD (5).
2. defroster control system according to claim 1 is characterized in that: also comprise the electric heater (11) that is connected with controller (9), described electric heater (11) is embedded on the evaporator of refrigerator (2).
3. defroster control system according to claim 1 is characterized in that: described defrosting temperature sensor (6) is located on the evaporator of refrigerator (2).
4. defroster control system according to claim 1 is characterized in that: described refrigerator temperature sensor (7) is located in the refrigerating chamber.
5. defroster control system according to claim 1 is characterized in that: described cryogenic temperature sensor (8) is located in the refrigerating chamber.
6. defroster control system according to claim 1 is characterized in that: described environment temperature sensor (12) is located at the refrigerator top.
7. the control method of a defroster control system according to claim 1 is characterized in that: comprise the following steps:
Step 1: the refrigerator refrigeration that powers on, controller (9) detects temperature of refrigerating chamber and freezer temperature separately by refrigerator temperature sensor (7) and freezer temperature sensor (8), and, judge whether each chamber requires refrigeration according to user's refrigeration design temperature Tr0 and freezing design temperature Tf0; When refrigerating chamber and refrigerating chamber all require to freeze, controller (9) control refrigerating chamber air inlet MOD (3), refrigerating chamber return air inlet MOD (5) and refrigerating chamber air inlet MOD (4) are all opened, freezer compressor (10) work refrigeration, circulating fan (1) work, kind of refrigeration cycle wind is by normal circulation circuit cycle refrigeration, refrigerating chamber and refrigerating chamber all freeze, when freezing to temperature of refrigerating chamber T1-a>refrigeration design temperature Tr0, controller (9) control refrigerating chamber air inlet MOD (4) is closed, refrigerating chamber stops refrigeration, and refrigerating chamber continues to freeze to shutdown temperature T3, and freezer compressor (10) is shut down;
Step 2: when refrigerator meets self-loopa wind defrosting condition, enter self-loopa wind defrost process: controller this moment (9) control refrigerating chamber air inlet MOD (3) and refrigerating chamber return air inlet MOD (5) are closed, control refrigerating chamber air inlet MOD (4) and circulating fan (1) are opened, circulated air circulates to refrigerating chamber by evaporator of refrigerator (2), because of the temperature difference of evaporator of refrigerator (2) and refrigerating chamber big, hot-air by refrigerating chamber defrosts to evaporator of refrigerator (2), the cold of evaporator of refrigerator (2) freezes and humidification to refrigerating chamber again simultaneously, temperature up to defrosting temperature sensor (6) or refrigerator temperature sensor (7) or freezer temperature sensor (8) detection meets self-loopa defrosting exit criteria, then withdraw from the self-loopa defrosting, then by normal refrigeration control;
Step 3: in step 2, controller (9) is accumulated freezer compressor (10) continuous operating time, and when the accumulation of freezer compressor (10) continuous operating time reaches t1, and freezer temperature is greater than Tf0; Or work as environment temperature less than 0 ℃, when the compressor operating time accumulation reaches t2, controller (9) closing refrigerator compressor (10), circulating fan (1), refrigerating chamber air inlet MOD (3), refrigerating chamber return air inlet MOD (5) and refrigerating chamber air inlet MOD (4), defrosting is assisted in the electric heater work of opening in the evaporator of refrigerator (2), when defrosting temperature sensor (6) detects evaporator of refrigerator (2) temperature and is T2, then withdraw from auxiliary defrosting.
8. the control method of defroster control system according to claim 7 is characterized in that: the described a of step 1 is 1~5 ℃, shutdown temperature T3<Tf0; 12 ℃-23 ℃ of Tf0 scopes.
9. the control method of defroster control system according to claim 7 is characterized in that: the described self-loopa defrosting of step 2 condition is that evaporator of refrigerator (2) temperature is T2<0 ℃, temperature of refrigerating chamber>Tr0 and compressor shutdown; Self-loopa defrosting exit criteria is that evaporator of refrigerator (2) temperature is T2>0 ℃, temperature of refrigerating chamber T1<0 ℃, and freezer temperature is greater than Tf0+b; 2 ℃-6 ℃ of the scopes of b.
10. the control method of defroster control system according to claim 7 is characterized in that: the described t1 of step 3 is 4~8 hours, and t2 is 8~15 hours, and evaporator of refrigerator (2) temperature is that T2 is 4~10 ℃.
CN 201010289250 2010-09-17 2010-09-17 Defrosting control system and control method of refrigerator Pending CN101963437A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 201010289250 CN101963437A (en) 2010-09-17 2010-09-17 Defrosting control system and control method of refrigerator
PCT/CN2010/078183 WO2012034299A1 (en) 2010-09-17 2010-10-28 Defrosting control system of refrigerator and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010289250 CN101963437A (en) 2010-09-17 2010-09-17 Defrosting control system and control method of refrigerator

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WO (1) WO2012034299A1 (en)

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