CN106052262B - A kind of defrosting method of refrigerator and its refrigerator room - Google Patents
A kind of defrosting method of refrigerator and its refrigerator room Download PDFInfo
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- CN106052262B CN106052262B CN201610528988.8A CN201610528988A CN106052262B CN 106052262 B CN106052262 B CN 106052262B CN 201610528988 A CN201610528988 A CN 201610528988A CN 106052262 B CN106052262 B CN 106052262B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/02—Detecting the presence of frost or condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
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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
The problem of the embodiment of the present invention provides the defrosting method of a kind of refrigerator and its refrigerator room, is related to field of household appliances, and frosting cannot melt completely before being able to solve compressor restarting.Concrete scheme includes: the temperature value Trf for obtaining the indoor temperature value TF of freezer and evaporator heat exchange plate surface；After compressor shutdown, when determining TF >=T5, the compensating heater is opened, when determining Trf > T3, closes the compensating heater；Wherein, T5 is the temperature threshold for the freezing compartment that the heater is opened in control, and T3 is the temperature threshold for controlling the evaporator heat exchange plate surface that defrost terminates；T4 < T3 < T1, T4 are the temperature threshold for triggering the refrigerator room of compressor shutdown, and T1 is the temperature threshold for triggering the refrigerator room of compressor booting.The present invention is used for the manufacture of refrigerator.
Description
Technical field
The present invention relates to field of household appliances more particularly to the defrosting methods of a kind of refrigerator and its refrigerator room.
Background technique
The refrigeration system of refrigerator includes compressor, condenser, capillary, evaporator, muffler and flowing in above-mentioned system
Refrigerant in cooling system pipeline.
When cooling system, compressor is opened, and is flowed into from the gaseous refrigerant of exhaust outlet of compressor discharge high temperature and pressure cold
Condenser, after condenser radiates, refrigerant is cooled to the liquid refrigerant of medium temperature high pressure, refrigerant from gaseous liquefied at liquid
A large amount of heat is released in the phase transition process of state.The liquid refrigerant of the medium temperature high pressure flowed out from condenser is dropped through capillary
The liquid refrigerant for becoming medium temperature low pressure after pressure, then flows into evaporator, and refrigerant is due to pressure reduction in evaporator, rapidly
Expansion is gasificated into gaseous refrigerant, and refrigerant absorbs amount of heat from ambient enviroment in gasification, thus by evaporator
The temperature on surface drags down rapidly.
The evaporator of direct cooling refrigerator or air-cooled and direct-cooled refrigerator is close to refrigerator room back liner, and evaporator surface temperature reduces
When, heat is absorbed from refrigerator room liner, so that refrigerator room temperature reduces.
In process of refrigerastion, the liner surface condensation that the moisture in refrigerator room air can be close to evaporator is frosted.Pressure
After contracting organ machine, temperature recovery in refrigerator room, frost heat absorption is melted into water.
However, frequently opening refrigerator room door under hot and humid environment, Hot wet air heating carries a large amount of fast rapid hardening of moisture
Knot is on refrigerator room liner surface.If frosting cannot melt completely before compressor restarting, by several refrigeration weeks
The frosting on liner surface just will continue to accumulate after phase.
Frosting accumulation can deteriorate heat transfer efficiency, and refrigerator room temperature is pulled down to setting value at this time and just evaporator is needed to reach
Lower temperature extends the compressor operating time, and compressor operational efficiency is caused to decline, and refrigerator power consumption increases.
Summary of the invention
The application provides the defrosting method of a kind of refrigerator and its refrigerator room, ties before being able to solve compressor restarting
The problem of frost cannot melt completely reduces refrigerator power consumption to improve compressor operational efficiency.
In order to achieve the above objectives, the application adopts the following technical scheme that
In a first aspect, a kind of refrigerator is provided, including refrigerator room, freezing compartment, controller, compressor and evaporator,
First temperature sensor is installed, the one side of evaporator heat exchange plate is bonded with refrigerator room liner, on another side in freezing compartment
Compensating heater and second temperature sensor are installed；
The controller, the temperature value TF measured for receiving first temperature sensor, after compressor shutdown, when
When determining TF >=T5, the compensating heater is opened；Wherein T5 is the temperature threshold for the freezing compartment that the heater is opened in control
Value；
The controller is also used to receive the temperature value Trf that the second temperature sensor measures, in compressor shutdown
Afterwards, when determining Trf > T3, the compensating heater is closed；Wherein T3 is the evaporator heat exchange plate surface for controlling defrost and terminating
Temperature threshold, T4 < T3 < T1, T4 be trigger compressor shutdown refrigerator room temperature threshold, T1 be triggering compressor open
The temperature threshold of the refrigerator room of machine.
Second aspect, provides a kind of defrosting method of refrigerator cold-storage compartment, and refrigerator includes refrigerator room, freezing compartment, pressure
The one side of contracting machine and evaporator, evaporator heat exchange plate is bonded with refrigerator room liner, and compensating heater is equipped on another side,
It is characterized in that, the defrosting method includes:
Obtain the temperature value Trf of the indoor temperature value TF of freezer and evaporator heat exchange plate surface；
After compressor shutdown, when determining TF >=T5, the compensating heater is opened, when determining Trf > T3, is closed
The compensating heater；
Wherein, T5 is the temperature threshold for the freezing compartment that the heater is opened in control, and T3 is the steaming for controlling defrost and terminating
Send out the temperature threshold of device heat exchange plate surface；T4 < T3 < T1, T4 are the temperature threshold for triggering the refrigerator room of compressor shutdown, T1
For the temperature threshold of the refrigerator room of triggering compressor booting.
The defrosting method of refrigerator and its refrigerator room provided by the embodiment of the present invention is surveyed using the first temperature sensor
The indoor temperature value TF of freezer is measured, and measurement result is sent to controller, is judged to open compensating heater by controller
Whether decision condition meets, if then opening compensating heater.
After compressor shutdown, refrigerator room and freezing compartment's temperature are gone up gradually, since refrigerator room is absorbed heat using defrost
Effect can maintain the relative low temperature of longer time, and temperature recovery to the corresponding turn-on temperature of refrigerator room is taken in refrigerator room
Between, than temperature recovery in freezing compartment to the corresponding turn-on temperature of freezing compartment the time required to it is longer.Frosting degree it is fewer the two
Difference between time span is smaller, and the difference between the two more time spans of frosting degree is bigger.
When temperature recovery is to T1 in refrigerator room, if freezing room temperature is maintained at T5 hereinafter, indicating refrigerator room
It is close with length the time required to temperature recovery in freezing compartment to corresponding turn-on temperature, illustrate refrigerator room frosting degree
It is few, in this case without opening compensating heater.In refrigerator room before temperature recovery to T1, if freezing room temperature
More than or equal to T5, indicate that freezer room temperature relatively faster goes back up to turn-on temperature, refrigerator room temperature is opposite
Turn-on temperature is more slowly gone back up to, illustrates that refrigerator room frosting degree is big, opens the compensating heater at this time, is heated by compensation
The heat of device quickly dissolves the frosting of refrigerator room, it is ensured that frosting is melted completely before compressor restarting, to improve pressure
Contracting machine operational efficiency reduces refrigerator power consumption.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, embodiment will be described below
Needed in attached drawing be briefly described.
Fig. 1 is a kind of structural schematic diagram of refrigerator provided by the embodiment of the present invention；
Fig. 2 is the side view of refrigerator cold-storage compartment in the embodiment of the present invention；
Fig. 3 is to open in the embodiment of the present invention to refrigeration blower, close decision condition and illustrate schematic diagram；
Fig. 4 is the explanation for compensating heater and refrigeration blower being opened, being closed in the embodiment of the present invention decision condition
Schematic diagram；
Fig. 5 is the flow diagram of defrosting method provided by the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides the defrosting method of a kind of refrigerator and its refrigerator room, and wherein refrigerator specifically refers to direct-cooled
Refrigerator or air-cooled and direct-cooled refrigerator.Direct cooling refrigerator or air-cooled and direct-cooled refrigerator, evaporator and refrigerator room liner are pasted, evaporator surface temperature
When reduction, heat is absorbed from refrigerator room liner, so that refrigerator room temperature reduces, refrigerator room liner pastes the position of evaporator
Setting is the position for being easiest to frosting,
For direct cooling refrigerator or air-cooled and direct-cooled refrigerator, the embodiment of the present invention provides a kind of defrosting method of refrigerator room,
Compensating heater is installed in the easy frosting position of refrigerator room liner, passes through heating method defrost after compressor shutdown.
Further, fan (hereinafter referred to as refrigeration fan), the refrigerator after compressor shutdown are installed in refrigerator room
When room temperature rises, by accelerating refrigerator indoor air circulation so that between the relatively high air and frosting of temperature into
Row sufficient heat exchange, one plays the role of defrost, and two can reduce refrigerator indoor air temperature.
According to frosting degree, alternately starts compensating heater and refrigeration fan carries out defrost, it is ensured that compressor restarting
Frosting is melted completely before.It elaborates with reference to embodiments to the technical solution of the application.
Embodiment one
The embodiment of the present invention provides a kind of refrigerator 10, as shown in connection with fig. 1, refrigerator 10 include refrigerator room, freezing compartment,
Controller 101, compressor 102 and evaporator 103.
First temperature sensor 104 is installed, the first temperature sensor 104 is for measuring in freezing compartment in freezing compartment
Temperature value TF.
The postnotum 109 of refrigerator room side view as shown in connection with fig. 2, refrigerator 10 is bonded with the one side of insulating layer 110, is protected
The another side of warm layer 110 is bonded evaporator 103 (not marking in Fig. 2).The one side and refrigerator of the heat exchanger plates 1031 of evaporator 103
Room back liner 111 is bonded, and is equipped with compensating heater 105 and second temperature sensor 106, compensating heater on another side
105, second temperature sensor 106 and evaporation tube 1032 are between insulating layer 110 and heat exchanger plates 1031.Second temperature sensing
Device 106 is used to measure the temperature value Trf of the heat exchange plate surface of evaporator 103.
Refrigerator 10 during the work time, 102 intermittent start of compressor, when the temperature value of refrigerator room is at or above
When T1, controller 101 starts compressor 102, and refrigerator room and freezing compartment's temperature reduce.When the temperature of refrigerator room is equal to
Or when being lower than T4,101 close compressor 102 of controller, refrigerator room and freezing compartment's temperature bottom out.Work as refrigerator room
Temperature value when going back up to T1, controller 101 is again started up compressor 102, so recycles.
In 102 operational process of compressor, refrigerator room liner frosting.After compressor 102 is shut down, refrigerator room temperature is returned
It rises, frosting starts to melt, if frosting frosting before the restarting of compressor 102 cannot melt completely, controller 101 is just opened
105 defrosting of compensating heater is opened, the gap before heater only reruns after the shutdown of compressor 102 is opened, in compressor 102
It is not turned in operational process.
The decision condition of the unlatching compensating heater 105 of controller 101:
Controller 101 receives the temperature value TF that the first temperature sensor 104 measures, and after the shutdown of compressor 102, works as determination
When TF >=T5, compensating heater 105 is opened.Wherein T5 is the temperature threshold for controlling the freezing compartment of heater, and T5 can be with
It is a preset definite value, is also possible to the variable set by the actual use situation of refrigerator 10.
After compressor 102 is shut down, refrigerator room and freezing compartment's temperature are slowly gone up, and the indoor temperature recovery of refrigerator is extremely
When certain value, frost starts nature and melts.Refrigerator room frosting degree is more, and the required defrost time is longer.Since refrigerator room utilizes
Defrost endothermic effect can maintain the relative low temperature of longer time, and temperature recovery is warm to the corresponding booting of refrigerator room in refrigerator room
The time required to degree, than temperature recovery in freezing compartment to the corresponding turn-on temperature of freezing compartment the time required to it is longer.
In refrigerator room before temperature recovery to T1, if freezing room temperature is maintained at T5 hereinafter, indicating refrigerator
Length is close the time required to temperature recovery to corresponding turn-on temperature in room and freezing compartment, illustrates refrigerator room frosting degree
It is few, in this case without opening compensating heater 105, need to only be opened until refrigerator room temperature is at or above T1
Dynamic compressor 102 starts process of refrigerastion.
In refrigerator room before temperature recovery to T1, if freezing room temperature is more than or equal to T5, freezing is indicated
Between room temperature relatively faster go back up to turn-on temperature, refrigerator room temperature more slowly goes back up to turn-on temperature relatively, says
Bright refrigerator room frosting degree is big, opens compensating heater 105 at this time, quickly dissolves refrigeration by the heat of compensating heater 105
The frosting of compartment.
The decision condition of the closing compensating heater 105 of controller 101:
After compensating heater 105 is opened, the temperature value Trf of the heat exchange plate surface of evaporator 103 rises.Controller 101
The temperature value Trf that second temperature sensor 106 measures is received, when determining Trf > T3, closes compensating heater 105.Wherein T3
For the temperature threshold for the heat exchange plate surface that control defrost terminates, T4 < T3 < T1.
Optionally, in a kind of specific embodiment, in addition to compensating heater 105, refrigerator 10 further includes refrigeration wind
Machine 107 and third temperature sensor 108.Refrigeration blower 107 and third temperature sensor 108 are mounted on refrigerator room
It is interior.As shown in connection with fig. 2, refrigeration blower 107 is installed on refrigerator room back liner 111, and third temperature sensor 108 is installed on
On refrigerator room inner wall 113.
Refrigeration blower 107 promotes the heat exchange between air and frosting, simultaneously for accelerating refrigerator indoor air circulation
Play the role of defrost and reduces refrigerator indoor air temperature.Third temperature sensor 108 is indoor for measuring refrigerator
Measurement result is sent to controller 101 by temperature value Tr.
Controller 101 opens the decision condition of refrigeration blower 107:
After the shutdown of compressor 102, as the determining Tr >=T2 of controller 101, and when Trf≤T3, refrigeration blower 107 is opened.
Wherein, T2 is the temperature threshold for the refrigerator room that refrigeration blower 107 is opened in control, T3 < T2 < T1.
As shown in connection with fig. 3, T4 < T3 < T2 < T1, after compressor 102 is shut down, the indoor temperature value TF (first of freezer
Temperature sensor 104 measures), the temperature value Trf (second temperature sensor 106 measures) of the heat exchange plate surface of evaporator 103, with
And the indoor temperature value Tr of refrigerator (third temperature sensor 108 measures) gos up gradually.
It is influenced by frosting, the rise speed ratio Tr rise speed of Trf is slow.Frosting degree is more, and the rise speed and Tr of Trf is returned
The difference of lifting speed is bigger.
When Tr is gone back up to more than or equal to T2, if Trf is greater than T3, it is fast to indicate that the rise speed of Trf and Tr are gone up
Degree is close, illustrates that refrigerator room frosting degree is few, in this case without opening refrigeration blower 107, need to only wait until in refrigerator room
When temperature is at or above T1, starting compressor 102 starts process of refrigerastion.
When Tr is gone back up to more than or equal to T2, if Trf is less than or equal to T3, indicate the rise speed of Trf with
Tr rise speed difference is larger, illustrates that refrigerator room frosting degree is big, opens refrigeration blower 107 at this time, accelerate air and frosting it
Between heat exchange, promote defrosting.
Controller 101 closes the decision condition of refrigeration blower 107:
After refrigerating the unlatching of blower 107, Trf rises, and when controller 101 determines Trf > T3, closes refrigeration blower 107.
The time point that refrigeration blower 107 is opened is Ts, refrigerates the time point that blower 107 is closed for Te, between Ts to Te
Period is the period for refrigerating blower 107 and working, and is indicated in Fig. 3 with dash area.
As shown in connection with fig. 4, before refrigeration blower 107 is closed after opening, if opening the decision condition of refrigeration blower 107
Meet, then opens refrigeration blower 107.Later if the decision condition for opening compensating heater 105 meets, compensation heating is opened
Device 105, compensating heater 105 and refrigeration blower 107 work at the same time at this time, when Trf > T3, close refrigeration 107 He of blower
Compensating heater 105.
In Fig. 4, the Ts moment to the period between the Te moment is the period for refrigerating blower 107 and working, in the event section
Interior Th moment, compensating heater 105 are opened.At the Th moment to the period between the Te moment, compensating heater 105 and refrigeration
Blower 107 is in working condition.Te moment Trf > T3 refrigerates blower 107 at this time and compensating heater 105 is turned off.
Refrigerator provided by the embodiment of the present invention utilizes the first indoor temperature value of temperature sensor measurement freezer
TF, and measurement result is sent to controller, judge whether the decision condition for opening compensating heater meets by controller, if
Then open compensating heater.
After compressor shutdown, refrigerator room and freezing compartment's temperature are gone up gradually, since refrigerator room is absorbed heat using defrost
Effect can maintain the relative low temperature of longer time, and temperature recovery to the corresponding turn-on temperature of refrigerator room is taken in refrigerator room
Between, than temperature recovery in freezing compartment to the corresponding turn-on temperature of freezing compartment the time required to it is longer.Frosting degree it is fewer the two
Difference between time span is smaller, and the difference between the two more time spans of frosting degree is bigger.
When temperature recovery is to T1 in refrigerator room, if freezing room temperature is maintained at T5 hereinafter, indicating refrigerator room
It is close with length the time required to temperature recovery in freezing compartment to corresponding turn-on temperature, illustrate refrigerator room frosting degree
It is few, in this case without opening compensating heater.In refrigerator room before temperature recovery to T1, if freezing room temperature
More than or equal to T5, indicate that freezer room temperature relatively faster goes back up to turn-on temperature, refrigerator room temperature is opposite
Turn-on temperature is more slowly gone back up to, illustrates that refrigerator room frosting degree is big, opens compensating heater at this time, pass through compensating heater
Heat quickly dissolves the frosting of refrigerator room, it is ensured that frosting is melted completely before compressor restarting, to improve compressor
Operational efficiency reduces refrigerator power consumption.
Embodiment two
The embodiment of the present invention two provides a kind of defrosting method of refrigerator cold-storage compartment, is applied to described in embodiment one
Refrigerator, refrigerator include refrigerator room, freezing compartment, compressor and evaporator, the one side and refrigerator room of evaporator heat exchange plate
Liner is bonded, and is equipped with compensating heater on another side.As shown in connection with fig. 5, comprising the following steps:
501, the temperature value Trf of the indoor temperature value TF of freezer and evaporator heat exchange plate surface is obtained.
The embodiment in conjunction with corresponding to Fig. 1 to Fig. 4, refrigerator can measure TF by the first temperature sensor, pass through second
Temperature sensor measures Trf, and the result measured is sent to the controller of refrigerator by temperature sensor.
502, after compressor shutdown, when determining TF >=T5, compensating heater is opened, when determining Trf > T3, is closed
Compensating heater.
After compressor shutdown, the controller of refrigerator is determined according to the value of the TF and Trf received to be opened or closes
Close compensating heater.
As TF >=T5, compensating heater is opened.T5 is the temperature threshold for controlling the freezing compartment of heater.
As Trf > T3, compensating heater is closed.T3 is the temperature threshold for controlling the evaporator heat exchange plate surface that defrost terminates
Value.T4 < T3 < T1, T4 are the temperature threshold for triggering the refrigerator room of compressor shutdown, and T1 is the refrigeration for triggering compressor booting
The temperature threshold of compartment.
It is no longer superfluous herein referring to the explanation in embodiment one about the principle for determining unlatching, closing compensating heater condition
It states.
503, the indoor temperature value Tr of refrigerator is obtained.
Step 503 is optional step, when being equipped with refrigeration blower in refrigerator room, executes step 503.Refrigerator can lead to
It crosses third temperature sensor and measures Tr, the result measured is sent to the controller of refrigerator by third temperature sensor.
504, after compressor shutdown, when determining Tr >=T2, and when Trf≤T3, refrigeration blower is opened, when determining Trf >
When T3, refrigeration blower is closed.
After compressor shutdown, the controller of refrigerator is turned on or off refrigeration wind according to the determination of the value of the Tr received
Machine.
As Tr >=T2, and when Trf≤T3, refrigeration blower is opened.Wherein, T2 is the refrigerator room that refrigeration blower is opened in control
Temperature threshold, T3 < T2 < T1.
As Trf > T3, refrigeration blower is closed.
It is no longer superfluous herein referring to the explanation in embodiment one about the principle for determining unlatching, closing refrigeration blower condition
It states.
The defrosting method of refrigerator cold-storage compartment provided by the embodiment of the present invention, it is cold using the first temperature sensor measurement
Indoor temperature value TF between jelly, and measurement result is sent to controller, the judgement for opening compensating heater is judged by controller
Whether condition meets, if then opening compensating heater.
After compressor shutdown, refrigerator room and freezing compartment's temperature are gone up gradually, since refrigerator room is absorbed heat using defrost
Effect can maintain the relative low temperature of longer time, and temperature recovery to the corresponding turn-on temperature of refrigerator room is taken in refrigerator room
Between, than temperature recovery in freezing compartment to the corresponding turn-on temperature of freezing compartment the time required to it is longer.Frosting degree it is fewer the two
Difference between time span is smaller, and the difference between the two more time spans of frosting degree is bigger.
When temperature recovery is to T1 in refrigerator room, if freezing room temperature is maintained at T5 hereinafter, indicating refrigerator room
It is close with length the time required to temperature recovery in freezing compartment to corresponding turn-on temperature, illustrate refrigerator room frosting degree
It is few, in this case without opening compensating heater.In refrigerator room before temperature recovery to T1, if freezing room temperature
More than or equal to T5, indicate that freezer room temperature relatively faster goes back up to turn-on temperature, refrigerator room temperature is opposite
Turn-on temperature is more slowly gone back up to, illustrates that refrigerator room frosting degree is big, opens compensating heater at this time, pass through compensating heater
Heat quickly dissolves the frosting of refrigerator room, it is ensured that frosting is melted completely before compressor restarting, to improve compressor
Operational efficiency reduces refrigerator power consumption.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. a kind of refrigerator, which is characterized in that including refrigerator room, freezing compartment, controller, compressor and evaporator, freezing
Between interior the first temperature sensor is installed, the one side of evaporator heat exchange plate is bonded with refrigerator room liner, installs on another side
There are compensating heater and second temperature sensor；
The controller works as determination after compressor shutdown for receiving the temperature value TF that first temperature sensor measures
When TF >=T5, the compensating heater is opened；Wherein T5 is the temperature threshold for the freezing compartment that the heater is opened in control；
The controller is also used to receive the temperature value Trf that the second temperature sensor measures, after compressor shutdown, when
When determining Trf > T3, the compensating heater is closed；Wherein T3 is the temperature for controlling the evaporator heat exchange plate surface that defrost terminates
Threshold value, T4 < T3 < T1, T4 are the temperature threshold for triggering the refrigerator room of compressor shutdown, and T1 is the cold of triggering compressor booting
Hide the temperature threshold of compartment.
2. refrigerator according to claim 1, which is characterized in that be equipped with refrigeration blower and third temperature in refrigerator room
Sensor；
The controller is also used to receive the temperature value Tr that the third temperature sensor measures, after compressor shutdown, when true
Determine Tr >=T2, and when Trf≤T3, open the refrigeration blower, when determining Trf > T3, closes the refrigeration blower；
Wherein, T2 is the temperature threshold for the refrigerator room that the refrigeration blower is opened in control, T3 < T2 < T1.
3. a kind of defrosting method of refrigerator cold-storage compartment, refrigerator includes refrigerator room, freezing compartment, compressor and evaporator,
The one side of evaporator heat exchange plate is bonded with refrigerator room liner, and compensating heater is equipped on another side, which is characterized in that described
Defrosting method includes:
Obtain the temperature value Trf of the indoor temperature value TF of freezer and evaporator heat exchange plate surface；
After compressor shutdown, when determining TF >=T5, the compensating heater is opened, when determining Trf > T3, described in closing
Compensating heater；
Wherein, T5 is the temperature threshold for the freezing compartment that the heater is opened in control, and T3 is the evaporator for controlling defrost and terminating
The temperature threshold for the plate surface that exchanges heat；T4 < T3 < T1, T4 are the temperature threshold for triggering the refrigerator room of compressor shutdown, and T1 is touching
Send out the temperature threshold of the refrigerator room of compressor booting.
4. defrosting method according to claim 3, which is characterized in that be equipped with refrigeration blower, describedization in refrigerator room
White method further include:
Obtain the indoor temperature value Tr of refrigerator；
After compressor shutdown, when determining Tr >=T2, and when Trf≤T3, the refrigeration blower is opened, when determining Trf > T3,
Close the refrigeration blower；Wherein, T2 is the temperature threshold for the refrigerator room that the refrigeration blower is opened in control, T3 < T2 <
T1。
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| CN107504747A (en) * | 2017-08-28 | 2017-12-22 | 合肥美的电冰箱有限公司 | Defrosting control method, control system and refrigerator |
| CN107940873B (en) * | 2017-11-17 | 2020-12-04 | 合肥美的电冰箱有限公司 | Defrosting method, defrosting system, computer readable storage medium and refrigeration equipment |
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| JPH11132634A (en) * | 1997-10-31 | 1999-05-21 | Matsushita Refrig Co Ltd | Refrigerator |
| CN101929779A (en) * | 2009-06-18 | 2010-12-29 | 日立空调·家用电器株式会社 | Refrigerator |
| CN201803567U (en) * | 2010-09-17 | 2011-04-20 | 海信容声(广东)冰箱有限公司 | Defrosting control system of refrigerator |
| CN102679685A (en) * | 2012-05-08 | 2012-09-19 | 河南新飞电器有限公司 | Air-cooled refrigerator and energy-saving defrosting control method thereof |
| CN104833167A (en) * | 2015-02-27 | 2015-08-12 | 河南新飞电器有限公司 | Air cooling refrigerator defrosting method |
| CN105674669A (en) * | 2016-02-02 | 2016-06-15 | 河南新飞电器有限公司 | Defrosting methods for double-system air-cooling refrigerator |
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