CN109764607A - The control method of refrigerator - Google Patents
The control method of refrigerator Download PDFInfo
- Publication number
- CN109764607A CN109764607A CN201811624830.6A CN201811624830A CN109764607A CN 109764607 A CN109764607 A CN 109764607A CN 201811624830 A CN201811624830 A CN 201811624830A CN 109764607 A CN109764607 A CN 109764607A
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- evaporator
- defrosting
- refrigeration
- expansion valve
- refrigerator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Defrosting Systems (AREA)
Abstract
The present invention provides a kind of defrosting control methods of refrigerator.The refrigerator includes compressor, condenser, electric expansion valve, evaporator, sets defrosting sensor on an evaporator, the heat exchange blower fan being used cooperatively with evaporator and heating element and the control mechanism for controlling refrigerator operation, and the control method includes the following steps: S1. setting defrosting temperature threshold T；S2. defrosting sensor measures the real-time temperature values X of evaporator, judges whether to need defrost；If S3. X < T, i.e., evaporator needs defrost, closes heat exchange blower fan；S4. compressor is shut down after the delay t1 time, simultaneously closes off electric expansion valve；S5. starting heating element is evaporator defrosting；S6. as X >=T, heating element stops working, and opens electric expansion valve；S7. compressor is opened after the delay t2 time.So set, defrost elapsed time can be reduced, refrigerator load is reduced.
Description
Technical field
The present invention relates to field of home appliance technology more particularly to a kind of control methods of refrigerator.
Background technique
The refrigeration cycle of conventional refrigerator is compressor → condenser → capillary → evaporator, and general defrost is heated
Silk is mounted on base of evaporator, and when evaporator needs defrost, compressor shutdown, heating wire works pass through evaporator tubes and wing
Bottom heat is transmitted at the top of evaporator by the thermally conductive and heat radiation of piece.Such defrost mode has the shortcomings that one obvious is exactly
The low efficiency of defrost heater strip, only 20% or so is applied in defrost, and other heats have all been radiated on air duct, thus leads
Freezer temperature elevation amplitude is big when having caused defrost, and refrigerator thermic load is larger.A part of gaseous refrigerant in evaporator can be through
Condenser is entered by capillary, due to still retaining liquid refrigerant inside condenser, the high temperature liquid refrigerant of entrance can be fast
Speed is cooled to liquid refrigerant, and unit volume becomes smaller, and retains most of refrigerant, is unfavorable for refrigeration cycle.Similarly, in tradition
The refrigerator with series-parallel Dual-evaporator refrigeration system in, be connected between refrigeration evaporator and refrigerating evaporator, refrigerate
Refrigerant trend when room is freezed are as follows: compressor → condenser → triple valve → refrigeration capillary → refrigeration evaporator → frozen steamed
Device is sent out, refrigerant moves towards when freezing chamber freezes are as follows: compressor → condenser → triple valve → freezing capillary → refrigerating evaporator.
In refrigeration evaporator defrost, the refrigerant inside evaporator can be heated quickly into high-temperature gas, the gaseous refrigerant of high temperature
A part enters refrigerating evaporator with the connecting tube between refrigeration evaporator and refrigerating evaporator, and another part passes through refrigeration capillary
Pipe and triple valve enter condenser；In refrigerating evaporator defrost, the refrigerant inside evaporator can be heated quickly into high temperature
Gaseous refrigerant a part of gas, high temperature enters refrigeration evaporation with the connecting tube between refrigeration evaporator and refrigerating evaporator
Device, another part enter condenser by freezing capillary and three-way solenoid valve, are unfavorable for refrigeration cycle.
Therefore, it is necessary to provide a kind of control method of improved refrigerator to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of defrosting control method of refrigerator, the refrigerator include compressor, condenser,
Electric expansion valve, evaporator, the heat exchange blower fan and heating unit for setting defrosting sensor on an evaporator, being used cooperatively with evaporator
Part and the control mechanism run for controlling refrigerator, the control method include the following steps:
S1. setting defrosting temperature threshold T；
S2. defrosting sensor measures the real-time temperature values X of evaporator, judges whether to need defrost；
If S3. X < T, i.e., evaporator needs defrost, closes heat exchange blower fan；
S4. compressor is shut down after the delay t1 time, simultaneously closes off electric expansion valve；
S5. starting heating element is evaporator defrosting；
S6. as X >=T, heating element stops working, and opens electric expansion valve；
S7. compressor is opened after the delay t2 time.
As a further improvement of the present invention, in step s 6, electric expansion valve is adjusted to maximum.
As a further improvement of the present invention, the t1 time is one minute.
As a further improvement of the present invention, the t2 time is five minutes.
For achieving the above object, the present invention provides a kind of defrosting control method of refrigerator, the refrigerator includes tool
There is the refrigeration system of series-parallel double evaporators, the refrigeration system includes compressor, condenser, is connected between said elements
Freezing component and component and the control mechanism for controlling refrigerator operation are refrigerated, the refrigeration component includes refrigerating capillary, cold
Hiding evaporator, the defrosting sensor being located on refrigeration evaporator, the refrigeration blower being used cooperatively with refrigeration evaporator and heating unit
Part and electric expansion valve, the freezing component include freezing capillary, refrigerating evaporator, the defrost being located on refrigerating evaporator biography
Sensor, the freezing blower and heating element being used cooperatively with refrigerating evaporator, the freezing capillary and refrigeration capillary paralleling
It is arranged and is controlled by triple valve, the electric expansion valve both ends is respectively connected to refrigeration evaporator and refrigerating evaporator, described
Control method includes the following steps:
S1. setting defrosting temperature threshold T；
S2. defrosting sensor measures the real-time temperature values X of the refrigeration evaporator and real-time temperature values Y of refrigerating evaporator, sentences
It is disconnected whether to need defrost；
If S3. X<T and Y>=T, i.e. refrigeration evaporator need defrost, triple valve switches to freezing side, closes refrigeration blower,
Simultaneously close off electric expansion valve；
S4. starting heating element is refrigeration evaporator defrosting；
S5. as X >=T, heating element stops working, and opens electric expansion valve.
As a further improvement of the present invention, if S6. Y<T and X>=T, i.e. refrigerating evaporator need defrost, freezing wind is closed
Machine；S7. compressor is shut down after the delay t1 time, and closes triple valve and electric expansion valve, and starting heating element is freezing and evaporating
Device defrosting；S8. as Y >=T, heating element stops working, and opens electric expansion valve；S9. compressor is opened after the delay t2 time.
As a further improvement of the present invention, in step S5 and S8, electric expansion valve is adjusted to maximum.
As a further improvement of the present invention, the t1 time is one minute.
As a further improvement of the present invention, the t2 time is five minutes.
The beneficial effects of the present invention are: gaseous coolant a part of high temperature is with refrigerant pipe in the present invention under defrost state
Road enters compressor, and since the cut-off of compressor valve plate acts on, this part gaseous coolant does not pass through compressor to condenser, and
The other side will not enter condenser by device for drying and filtering since electric expansion valve is closed.And refrigerator of the present invention
Control method first closes heat exchange blower fan when passing through defrost, evaporator and extraneous heat exchange are deteriorated at this time, and then the internal refrigerant retained
Than increasing under refrigerating state, compressor delay is shut down, and most of refrigerant of refrigeration system can remain in evaporator at this time, control
Mechanism starting heating element is begun to warm up, and the refrigerant for remaining in base of evaporator is heated rapidly, and refrigerant pipeline and refrigerant are led
Heat can be transferred to rapidly entire evaporator by heat, accelerate heat transfer, improved the working efficiency of heating element, shortened
The defrost time.
Detailed description of the invention
Fig. 1 is the schematic diagram under refrigerator first embodiment refrigerating state of the present invention.
Fig. 2 is the schematic diagram under refrigerator first embodiment defrost state of the present invention.
Fig. 3 is the flow chart of refrigerator first embodiment control method of the present invention.
Fig. 4 is the schematic diagram under refrigerator second embodiment refrigerating state of the present invention.
Schematic diagram when Fig. 5 is refrigerator second embodiment refrigeration evaporator or refrigerating evaporator of the present invention independent defrost.
Fig. 6 is the flow chart of refrigerator second embodiment control method of the present invention.
Specific embodiment
Below with reference to embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are not intended to limit this
Invention, the transformation in structure or function that those skilled in the art are made according to these embodiments are all contained in this hair
In bright protection scope.
Fig. 1 to Fig. 3 is shown first embodiment of the invention, and refrigerator of the present invention includes compressor 1, condenser 2, electronics
Expansion valve 3, evaporator 4, the defrosting sensor 5 being located on evaporator 4, the heat exchange blower fan 6 being used cooperatively with evaporator 4 and heating
Element 7 and the control mechanism run for controlling refrigerator.Dry filter is additionally provided between electric expansion valve 3 and condenser 2
Device 8.To for the refrigerant pipe that refrigerant flows be sequentially connected compressor 1, condenser 2, device for drying and filtering 8, electric expansion valve 3 and
Evaporator 4 is simultaneously formed into a loop.In the present invention, the heating element 7 is heater strip.
Shown in referring to Fig.1, under refrigerating state, refrigerant is compressed into the gas of high pressure by compressor 1, after condenser 2
Become highly pressurised liquid, then become the liquid of low-pressure low-temperature by electric expansion valve 3, become low-pressure gas using evaporator 4,
And compressor 1 is returned to, repeat above-mentioned circulation.
Referring to shown in Fig. 2, under defrost state, gaseous coolant a part of high temperature enters compressor 1 with refrigerant pipeline, by
It is acted in the cut-off of 1 valve block of compressor, this part gaseous coolant does not pass through compressor 1 to condenser 2, and the other side is due to electricity
Sub- expansion valve 3 is closed, therefore will not enter condenser 2 by device for drying and filtering 8.Therefore, the refrigerator setting defrosting temperature
Threshold value T is spent, defrosting sensor 5 measures the real-time temperature values X of evaporator 4, and as X < T, i.e. 4 temperature of evaporator is too low, the evaporation
Device 4 needs defrost, is shut down by control mechanism control heat exchange blower fan 6, and evaporator 4 and extraneous heat exchange are deteriorated at this time, and then interior
The refrigerant that portion retains under refrigerating state than increasing, and compressor 1 is shut down after the t1 time, and electric expansion valve 3 is closed, at this time refrigeration system
Most of refrigerant can remain in evaporator 4, control mechanism starting heating element 7 begin to warm up, remain in 4 bottom of evaporator
Refrigerant be heated rapidly, heat can be transferred to rapidly entire evaporator 4 by refrigerant pipeline and the thermally conductive of refrigerant, accelerate heat
Transmitting, improves the working efficiency of heating element 7, shortens the defrost time.After defrost, in order to quickly make in evaporator 4
Pressure reduction, to be conducive to the starting of compressor 1, the aperture of electric expansion valve 3 can be opened to maximum after the t2 time is
Pressure basically reaches balance in uniting, and then control mechanism control compressor 1 starts, and starts to freeze.
Fig. 4 to fig. 6 is second embodiment of the present invention, and the refrigerator includes the refrigeration system with series-parallel double evaporators
System, the refrigeration system include compressor 1 ', condenser 2 ', the freezing component being connected between said elements and refrigeration component and
For controlling the control mechanism of refrigerator operation.The refrigeration component include refrigeration capillary 91 ', refrigeration evaporator 41 ', be located at it is cold
The refrigeration blower 61 ' and heating element that defrosting sensor 51 ' and refrigeration evaporator 41 ' on hiding evaporator 41 ' are used cooperatively
71 ' and electric expansion valve 3 ', the freezing component includes freezing capillary 92 ', refrigerating evaporator 42 ', is located at refrigerating evaporator
The freezing blower 62 ' and heating element 72 ' that defrosting sensor 52 ' and refrigerating evaporator 42 ' on 42 ' are used cooperatively, it is described cold
Freeze capillary 92 ' and refrigeration capillary 91 ' is arranged in parallel and is controlled by triple valve 93 ', the 3 ' both ends of electric expansion valve point
Refrigeration evaporator 41 ' and refrigerating evaporator 42 ' are not connected to it.
On freezing branch road, refrigerant pipe is sequentially connected compressor 1 ', condenser 2 ', triple valve 93 ', freezing capillary
It 92 ' and refrigerating evaporator 42 ' and is formed into a loop.Refrigeration branch road on, refrigerant pipe be sequentially connected compressor 1 ', condenser 2 ',
Triple valve 93 ', refrigeration capillary 91 ', refrigeration evaporator 41 ', electric expansion valve 3 ' and refrigerating evaporator 42 ' are simultaneously formed into a loop.
In the present embodiment, the refrigerator setting defrosting temperature threshold T, defrosting sensor 51 ', 52 ' is measured cold respectively
The real-time temperature values X of evaporator 41 ' and the real-time temperature values Y of refrigerating evaporator 42 ' is hidden, as X<T and Y>=T, i.e. refrigeration evaporator
41 ' temperature are too low, and refrigeration evaporator 41 ' needs defrost, switch to freezing side by control mechanism control triple valve 93 ', refrigerate wind
Machine 61 ' shuts down, and simultaneously closes off electric expansion valve 3 ', and refrigeration evaporator 41 ' and extraneous heat exchange are deteriorated at this time, and then inside is deposited
The refrigerant stayed under refrigerating state than increasing, and compressor 1 ' is shut down after the t1 time, and most of refrigerant of refrigeration system can retain at this time
In refrigeration evaporator 41 ', control mechanism starting heating element 71 ' is begun to warm up, and remains in the cold of 41 ' bottom of refrigeration evaporator
Matchmaker is heated rapidly, and heat can be transferred to rapidly entire refrigeration evaporator 41 ' by refrigerant pipeline and the thermally conductive of refrigerant, accelerates heat
Amount transmitting, improves the working efficiency of heating element 71 ', shortens the defrost time.After defrost, in order to quickly steam refrigeration
The aperture of electric expansion valve 3 ' can be opened to maximum to be conducive to the starting of compressor 1 ' by pressure reduction in hair device 41 ',
After the t2 time, system pressure basically reaches balance, and then control mechanism control compressor 1 ' starts, and starts to freeze.
As Y<T and X>=T, i.e. 42 ' temperature of refrigerating evaporator is too low, and refrigerating evaporator 42 ' needs defrost, closes freezing wind
Refrigerating evaporator 42 ' and extraneous heat exchange are deteriorated machine 61 ' at this time, and then the internal refrigerant retained is compressed than increasing under refrigerating state
Machine 1 ' is shut down after the delay t1 time, and closes triple valve 93 ' and electric expansion valve 3 ', most of refrigerant meeting of refrigeration system at this time
It remains in refrigerating evaporator 42 ', the refrigerant for remaining in 41 ' bottom of refrigeration evaporator is heated rapidly, refrigerant pipeline and refrigerant
It is thermally conductive heat can be transferred to rapidly to entire refrigerating evaporator 42 ', accelerate heat transfer, improve heating element 71 '
Working efficiency shortens the defrost time.After defrost, in order to quickly make pressure reduction in refrigerating evaporator 42 ', thus favorably
In the starting of compressor 1 ', the aperture of electric expansion valve 3 ' can be opened to maximum, after the t2 time, system pressure is basically reached
Balance, then control mechanism control compressor 1 ' starts, and starts to freeze.
The t1 time is one minute in the present invention, and the t2 time is five minutes, the type of certain practical operation view refrigerator, volume
And the actual conditions such as service life adjust.
The refrigerator 100 other constitute and operation be all for those of ordinary skills it is known, this
In be not described in detail.
The series of detailed descriptions listed above are illustrated only for possible embodiments of the invention,
The protection scope that they are not intended to limit the invention, it is all without departing from equivalent embodiment made by technical spirit of the present invention or change
It should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of defrosting control method of refrigerator, it is characterised in that: the refrigerator include compressor, condenser, electric expansion valve,
It evaporator, the heat exchange blower fan for setting defrosting sensor on an evaporator, being used cooperatively with evaporator and heating element and is used for
The control mechanism of refrigerator operation is controlled, the control method includes the following steps:
S1. setting defrosting temperature threshold T；
S2. defrosting sensor measures the real-time temperature values X of evaporator, judges whether to need defrost；
If S3. X < T, i.e., evaporator needs defrost, closes heat exchange blower fan；
S4. compressor is shut down after the delay t1 time, simultaneously closes off electric expansion valve；
S5. starting heating element is evaporator defrosting；
S6. as X >=T, heating element stops working, and opens electric expansion valve；
S7. compressor is opened after the delay t2 time.
2. the defrosting control method of refrigerator according to claim 1, it is characterised in that: in step s 6, by electronic expansion
Valve is adjusted to maximum.
3. the defrosting control method of refrigerator according to claim 1, it is characterised in that: the t1 time is one minute.
4. the defrosting control method of refrigerator according to claim 1, it is characterised in that: the t2 time is five minutes.
5. a kind of defrosting control method of refrigerator, it is characterised in that: the refrigerator includes the refrigeration with series-parallel double evaporators
System, the refrigeration system include compressor, condenser, the freezing component being connected between said elements and refrigeration component and use
In the control mechanism of control refrigerator operation, the refrigeration component includes refrigeration capillary, refrigeration evaporator, is located at refrigeration evaporator
On defrosting sensor, the refrigeration blower that is used cooperatively with refrigeration evaporator and heating element and electric expansion valve, the freezing
Component include freezing capillary, refrigerating evaporator, the defrosting sensor being located on refrigerating evaporator, with refrigerating evaporator cooperate make
Freezing blower and heating element, the freezing capillary and refrigeration capillary paralleling are arranged and are controlled by triple valve, institute
It states electric expansion valve both ends and is respectively connected to refrigeration evaporator and refrigerating evaporator, the control method includes the following steps:
S1. setting defrosting temperature threshold T；
S2. defrosting sensor measures the real-time temperature values X of refrigeration evaporator and the real-time temperature values Y of refrigerating evaporator, judgement are
It is no to need defrost；
If S3. X<T and Y>=T, i.e. refrigeration evaporator need defrost, triple valve switches to freezing side, closes refrigeration blower, simultaneously
Close electric expansion valve；
S4. starting heating element is refrigeration evaporator defrosting；
S5. as X >=T, heating element stops working, and opens electric expansion valve.
6. the defrosting control method of refrigerator according to claim 5, it is characterised in that: if S6. Y<T and X>=T, that is, freeze
Evaporator needs defrost, closes freezing blower；S7. compressor is shut down after the delay t1 time, and closes triple valve and electronic expansion
Valve starts heating element as refrigerating evaporator defrosting；S8. as Y >=T, heating element stops working, and opens electric expansion valve；
S9. compressor is opened after the delay t2 time.
7. the defrosting control method of refrigerator according to claim 6, it is characterised in that: in step S5 and S8, by electronics
Expansion valve is adjusted to maximum.
8. the defrosting control method of refrigerator according to claim 1, it is characterised in that: the t1 time is one minute.
9. the defrosting control method of refrigerator according to claim 1, it is characterised in that: the t2 time is five minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624830.6A CN109764607B (en) | 2018-12-28 | 2018-12-28 | Control method of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624830.6A CN109764607B (en) | 2018-12-28 | 2018-12-28 | Control method of refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109764607A true CN109764607A (en) | 2019-05-17 |
| CN109764607B CN109764607B (en) | 2021-03-23 |
Family
ID=66451753
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811624830.6A Active CN109764607B (en) | 2018-12-28 | 2018-12-28 | Control method of refrigerator |
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| CN (1) | CN109764607B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530043A (en) * | 2019-09-03 | 2019-12-03 | 合肥晶弘电器有限公司 | The control method of refrigeration system, refrigerator and refrigeration system |
| CN110940137A (en) * | 2019-12-19 | 2020-03-31 | 珠海格力电器股份有限公司 | Refrigerator and control method thereof |
| CN111964338A (en) * | 2020-08-03 | 2020-11-20 | 星崎电机（苏州）有限公司 | Electric heating linkage control system in refrigerator |
| CN112197403A (en) * | 2020-08-28 | 2021-01-08 | 珠海格力电器股份有限公司 | Air cooler defrosting control method and device, storage medium and air cooler |
| CN112484390A (en) * | 2020-11-26 | 2021-03-12 | 珠海格力电器股份有限公司 | Refrigerator temperature control method and device and refrigerator |
| CN113776255A (en) * | 2021-10-09 | 2021-12-10 | 北京云迹科技有限公司 | Refrigeration cabinet and refrigeration system |
| CN113883800A (en) * | 2021-10-28 | 2022-01-04 | 澳柯玛股份有限公司 | Refrigeration and defrosting control method of double-system refrigeration refrigerator |
| CN113883770A (en) * | 2020-07-01 | 2022-01-04 | 海信（山东）冰箱有限公司 | Refrigerator and defrosting control method |
| CN113915870A (en) * | 2021-03-05 | 2022-01-11 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN115031462A (en) * | 2022-05-16 | 2022-09-09 | 长虹美菱股份有限公司 | Refrigerator refrigerating system and defrosting method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530043A (en) * | 2019-09-03 | 2019-12-03 | 合肥晶弘电器有限公司 | The control method of refrigeration system, refrigerator and refrigeration system |
| CN110940137A (en) * | 2019-12-19 | 2020-03-31 | 珠海格力电器股份有限公司 | Refrigerator and control method thereof |
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| CN111964338A (en) * | 2020-08-03 | 2020-11-20 | 星崎电机（苏州）有限公司 | Electric heating linkage control system in refrigerator |
| CN112197403A (en) * | 2020-08-28 | 2021-01-08 | 珠海格力电器股份有限公司 | Air cooler defrosting control method and device, storage medium and air cooler |
| CN112484390A (en) * | 2020-11-26 | 2021-03-12 | 珠海格力电器股份有限公司 | Refrigerator temperature control method and device and refrigerator |
| CN113915870A (en) * | 2021-03-05 | 2022-01-11 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN113776255A (en) * | 2021-10-09 | 2021-12-10 | 北京云迹科技有限公司 | Refrigeration cabinet and refrigeration system |
| CN113883800A (en) * | 2021-10-28 | 2022-01-04 | 澳柯玛股份有限公司 | Refrigeration and defrosting control method of double-system refrigeration refrigerator |
| CN113883800B (en) * | 2021-10-28 | 2023-03-14 | 澳柯玛股份有限公司 | Refrigeration and defrosting control method of double-system refrigeration refrigerator |
| CN115031462A (en) * | 2022-05-16 | 2022-09-09 | 长虹美菱股份有限公司 | Refrigerator refrigerating system and defrosting method thereof |
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| CN109764607B (en) | 2021-03-23 |
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