CN112432413A - Defrosting system for refrigerator and air-cooled refrigerator - Google Patents
Defrosting system for refrigerator and air-cooled refrigerator Download PDFInfo
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- CN112432413A CN112432413A CN202011342857.3A CN202011342857A CN112432413A CN 112432413 A CN112432413 A CN 112432413A CN 202011342857 A CN202011342857 A CN 202011342857A CN 112432413 A CN112432413 A CN 112432413A
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a defrosting system for a refrigerator, which comprises a compressor, a condenser, a first throttling element, an evaporator, a second throttling element, a liner evaporator, a first condensing valve, a second condensing valve, a first defrosting valve and a second defrosting valve, wherein the first throttling element is arranged on the inner container of the refrigerator; the first condensation valve and the second condensation valve are opened or closed simultaneously, the first defrosting valve and the second defrosting valve are opened or closed simultaneously, and the on-off state of the first condensation valve is opposite to that of the first defrosting valve. When defrosting is carried out, a refrigerant circulates among the compressor, the evaporator, the second throttling element and the inner container evaporator, and at the moment, the refrigerant releases heat in the evaporator to raise the temperature of the evaporator, so that frost on the surface is melted through self heat dissipation; meanwhile, the refrigerant absorbs heat in the inner container evaporator, the temperature of the inner container evaporator is reduced, and heat exchange with air in the air duct is realized, so that the effect of defrosting without temperature return is achieved.
Description
Technical Field
The invention belongs to the technical field of refrigerators, and particularly relates to a defrosting system for a refrigerator and an air-cooled refrigerator.
Background
With the improvement of living standard, people have more and more demands on the refrigerator. Currently, refrigerators include direct-cooling refrigerators and air-cooling refrigerators.
When the air-cooled refrigerator operates in a refrigerating mode, air in the refrigerator enters the air channel from the air inlet and exchanges heat with a refrigerant in the evaporator at first, the refrigerant in the evaporator absorbs heat of the air to be vaporized, the cooled air is blown out from the air outlet in the upper portion of the refrigerator under the action of the fan in the air channel, accordingly refrigeration in the refrigerator is achieved, and the refrigerant after absorbing the heat enters the compressor and the condenser again to be liquefied and released, so that circulating refrigeration is achieved. After long-time refrigeration operation, a layer of frost is condensed on the surface of the evaporator, so that heat exchange between a refrigerant in the evaporator and air in the air channel is influenced, and the refrigeration effect of the refrigerator is further influenced. Therefore, the evaporator needs to be periodically defrosted.
At present, the air-cooled refrigerator basically adopts heating wires to heat and defrost, and the heating wires are arranged at the lower end of an evaporator. When the accumulated running time of the compressor reaches the defrosting time, the compressor is stopped, the heating wire is electrified to generate heat, the heating wire is used for heating to defrost the surface frost layer of the evaporator, and the defrosting water is discharged through the drain pipe.
However, the conventional defrosting method using heating wire heating has the following disadvantages: in the defrosting process, the refrigeration system stops working, the temperature in the refrigerator rises, and great influence is stored on food materials.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a defrosting system for a refrigerator and an air-cooled refrigerator.
In order to achieve the purpose, the invention adopts the following technical scheme:
a defrosting system for a refrigerator comprises a compressor, a condenser, a first throttling element, an evaporator, a second throttling element and a liner evaporator;
the outlet of the compressor is connected with the inlet of the condenser, the outlet of the condenser is connected with the inlet of the first throttling element, the outlet of the first throttling element is connected with the inlet of the evaporator, and the outlet of the evaporator is connected with the inlet of the compressor;
a first condensation valve is arranged on a pipeline between the outlet of the compressor and the inlet of the condenser, and a second condensation valve is arranged on a pipeline between the outlet of the evaporator and the inlet of the compressor;
the outlet of the compressor is also connected with the inlet of the evaporator, the outlet of the evaporator is also connected with the inlet of the second throttling element, the outlet of the second throttling element is connected with the inlet of the liner evaporator, and the outlet of the liner evaporator is connected with the inlet of the compressor;
a first defrosting valve is arranged on a pipeline between the outlet of the compressor and the inlet of the evaporator, and a second defrosting valve is arranged on a pipeline between the outlet of the evaporator and the inlet of the second throttling element;
the first condensation valve and the second condensation valve are opened or closed simultaneously, the first defrosting valve and the second defrosting valve are opened or closed simultaneously, and the on-off state of the first condensation valve is opposite to that of the first defrosting valve.
Preferably, the first throttling element is a capillary tube.
Preferably, the second orifice is a capillary tube.
Preferably, the first condensation valve, the second condensation valve, the first defrosting valve and the second defrosting valve are all solenoid valves.
Preferably, the first condensation valve, the second condensation valve, the first defrosting valve and the second defrosting valve are connected with the control assembly;
the control assembly comprises a defrosting judgment module and a controller, and the defrosting judgment module is in communication connection with the controller; the controller is electrically connected with the first condensing valve, the second condensing valve, the first defrosting valve and the second defrosting valve.
Preferably, the defrosting determination module is a compressor running time accumulation module.
Preferably, the defrosting determination module is an evaporator temperature measurement module.
Preferably, the defrosting judgment module is a refrigerator door opening and closing frequency module.
The invention also provides an air-cooled refrigerator.
An air-cooled refrigerator comprises a refrigerator body and a door body, wherein an air channel is arranged inside the refrigerator body, an air inlet communicated with the air channel is formed in the lower end of the refrigerator body, and an air outlet communicated with the air channel is formed in the upper end of the refrigerator body; a fan is arranged in the air duct;
a defrosting system for a refrigerator is arranged in the cabinet body, and the evaporator and the liner evaporator are both arranged on the liner wall in the air channel;
the bottom of the evaporator is provided with a water pan, and the bottom of the water pan is provided with a drain pipe capable of discharging the defrosted water out of the refrigerator.
The invention has the beneficial effects that:
when defrosting is carried out, a refrigerant circulates among the compressor, the evaporator, the second throttling element and the inner container evaporator, and at the moment, the refrigerant releases heat in the evaporator to raise the temperature of the evaporator, so that frost on the surface is melted through self heat dissipation; meanwhile, the refrigerant absorbs heat in the inner container evaporator, the temperature of the inner container evaporator is reduced, and heat exchange with air in the air duct is realized, so that the effect of defrosting without temperature return is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic flow chart of a defrosting system for a refrigerator according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a refrigerator in embodiment 2 of the present invention;
wherein:
01-cabinet body, 02-door body, 03-air inlet, 04-air outlet and 05-fan;
1-a compressor, 2-a condenser, 3-a first throttling element, 4-an evaporator, 41-a water pan, 42-a drain pipe, 5-a second throttling element, 6-a liner evaporator, 7-a first condensing valve, 8-a second condensing valve, 9-a first defrosting valve and 10-a second defrosting valve;
11-a defrosting judgment module and 12-a controller.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present invention, and do not particularly indicate any components or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "connected" and "connecting" should be interpreted broadly, and mean either a fixed connection or an integral connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
The invention is further illustrated with reference to the following figures and examples.
Example 1:
as shown in fig. 1, a defrosting system for a refrigerator comprises a compressor 1, a condenser 2, a first throttling element 3, an evaporator 4, a second throttling element 5 and a liner evaporator 6;
the outlet of the compressor 1 is connected with the inlet of the condenser 2, the outlet of the condenser 2 is connected with the inlet of the first throttling element 3, the outlet of the first throttling element 3 is connected with the inlet of the evaporator 4, the outlet of the evaporator 4 is connected with the inlet of the compressor 1, the condenser 2, the first throttling element 3 and the evaporator 4 form a refrigerating system of the refrigerator, a refrigerant enters the compressor 1, the compressor 1 improves the gas pressure of the refrigerant to cause a liquefaction condition, the refrigerant is condensed and liquefied to release heat when passing through the condenser 2, then the pressure and the temperature are reduced when passing through the first throttling element 3, and the refrigerant is boiled and vaporized to absorb heat when passing through the evaporator 4;
a first condensation valve 7 is arranged on a pipeline between the outlet of the compressor 1 and the inlet of the condenser 2, and a second condensation valve 8 is arranged on a pipeline between the outlet of the evaporator 4 and the inlet of the compressor 1;
the outlet of the compressor 1 is also connected with the inlet of an evaporator 4, the outlet of the evaporator 4 is also connected with the inlet of a second throttling element 5, the outlet of the second throttling element 5 is connected with the inlet of a liner evaporator 6, and the outlet of the liner evaporator 6 is connected with the inlet of the compressor;
a first defrosting valve 9 is arranged on a pipeline between the outlet of the compressor 1 and the inlet of the evaporator 4, and a second defrosting valve 10 is arranged on a pipeline between the outlet of the evaporator 4 and the inlet of the second throttling element 5;
the first condensation valve 7 and the second condensation valve 8 are opened or closed at the same time, the first defrosting valve 9 and the second defrosting valve 10 are opened or closed at the same time, and the on-off state of the first condensation valve 7 is opposite to the on-off state of the first defrosting valve 9.
Preferably, the first throttle 3 is a capillary tube.
Preferably, the second throttling member 5 is a capillary tube.
Preferably, the first condensation valve 7, the second condensation valve 8, the first defrosting valve 9 and the second defrosting valve 10 are all solenoid valves.
Preferably, the first condensation valve 7, the second condensation valve 8, the first defrosting valve 9 and the second defrosting valve 10 are connected with a control component;
the control assembly comprises a defrosting judgment module 11 and a controller 12, wherein the defrosting judgment module 11 is in communication connection with the controller 12; the controller 12 is electrically connected with the first condensation valve 7, the second condensation valve 8, the first defrosting valve 9 and the second defrosting valve 10, that is, the controller 12 controls the opening or closing of the first condensation valve 7, the second condensation valve 8, the first defrosting valve 9 and the second defrosting valve 10.
Preferably, the defrosting determination module 11 is a compressor operation time accumulation module for accumulating the operation time of the compressor. The compressor running time accumulation module can be realized by adopting the prior art, for example, the compressor running time accumulation module is a timer, the timer starts to time when the compressor is powered on every time and stops timing when the compressor is powered off every time, timing data are transmitted to a storage, and the storage has a power-off memory function. And the defrosting judgment module judges whether to start a defrosting program according to the accumulated time in the storage.
Preferably, the defrosting determination module 11 is an evaporator temperature measurement module for measuring the temperature of the evaporator 4, wherein the evaporator temperature measurement module may be an infrared temperature sensor. Because the temperature of the frost-free evaporator is not consistent with that of the evaporator with the frost layer on the surface. Meanwhile, the defrosting determination module 11 may also adopt an infrared distance sensor, and determine the thickness of the frost layer on the surface of the evaporator by measuring the distance between the sensor and the evaporator, so as to determine whether the frosting condition on the surface of the evaporator is achieved or not.
Preferably, the defrosting determination module 11 is a door opening and closing frequency module of the refrigerator, and is used for counting the door opening and closing frequency of the refrigerator. Wherein, the door opening and closing frequency module adopts prior art just can realize, for example the freezer sets up the magnetic induction switch at the cabinet mouth or hinge position, and the magnetic induction switch links to each other with the counter to this statistics door opening and closing frequency.
When the refrigerator needs to refrigerate, the first condensing valve 7 and the second condensing valve 8 are opened simultaneously, and the first defrosting valve 9 and the second defrosting valve 10 are closed simultaneously; at the moment, the refrigerant circulates among the compressor 1, the condenser 2, the first throttling element 3 and the evaporator 4, is compressed by the compressor 1, condensed by the condenser 2, throttled by the second throttling element 3 and absorbed by the evaporator 4, reduces the temperature of the evaporator 4, realizes heat exchange with air in an air duct, and further reduces the temperature in the refrigerator.
When the defrosting judgment module 11 judges that the evaporator 4 reaches a defrosting condition, the controller 12 controls the first condensation valve 7 and the second condensation valve 8 to be closed at the same time, and the first defrosting valve 9 and the second defrosting valve 10 to be opened at the same time; at the moment, the refrigerant circulates among the compressor 1, the evaporator 4, the second throttling element 5 and the liner evaporator 6, the refrigerant condenses and releases heat in the evaporator 4 (the evaporator 4 at the moment is equivalent to a condenser), so that the temperature of the evaporator 4 is increased, frost on the surface is melted through self heat dissipation, and the melted frost water is discharged out of the freezer through a drain pipe 42 at the bottom of the evaporator 4; meanwhile, the refrigerant is vaporized in the liner evaporator 6 to absorb heat, so that the temperature of the liner evaporator 6 is reduced, heat exchange with air in the air duct is realized, and the effect of defrosting without temperature return is achieved. Simultaneously, adopt the heater strip heating defrosting among the current air-cooled freezer, because the power that the heater strip heating defrosted is great to cause the freezer energy consumption great, consequently this application no longer uses the heater strip heating defrosting, can reduce the energy consumption of freezer.
Example 2:
as shown in fig. 2, the air-cooled refrigerator comprises a cabinet body 01 and a door body 02, wherein an air duct is arranged inside the cabinet body 01, an air inlet 03 communicated with the air duct is arranged at the lower end of the cabinet body 01, and an air outlet 04 communicated with the air duct is arranged at the upper end of the cabinet body 02; a fan 05 is arranged in the air duct;
the refrigerator body 01 is internally provided with the defrosting system for the refrigerator in the embodiment 1, and the evaporator 4 and the liner evaporator 6 are both arranged on the liner wall in the air duct;
the bottom of the evaporator 4 is provided with a water pan 41, and the bottom of the water pan 41 is provided with a drain pipe 42 which can discharge the defrosted water out of the refrigerator.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the present invention, and it should be understood by those skilled in the art that various modifications and changes may be made without inventive efforts based on the technical solutions of the present invention.
Claims (9)
1. A defrosting system for a refrigerator is characterized by comprising a compressor, a condenser, a first throttling element, an evaporator, a second throttling element and a liner evaporator;
the outlet of the compressor is connected with the inlet of the condenser, the outlet of the condenser is connected with the inlet of the first throttling element, the outlet of the first throttling element is connected with the inlet of the evaporator, and the outlet of the evaporator is connected with the inlet of the compressor;
a first condensation valve is arranged on a pipeline between the outlet of the compressor and the inlet of the condenser, and a second condensation valve is arranged on a pipeline between the outlet of the evaporator and the inlet of the compressor;
the outlet of the compressor is also connected with the inlet of the evaporator, the outlet of the evaporator is also connected with the inlet of the second throttling element, the outlet of the second throttling element is connected with the inlet of the liner evaporator, and the outlet of the liner evaporator is connected with the inlet of the compressor;
a first defrosting valve is arranged on a pipeline between the outlet of the compressor and the inlet of the evaporator, and a second defrosting valve is arranged on a pipeline between the outlet of the evaporator and the inlet of the second throttling element;
the first condensation valve and the second condensation valve are opened or closed simultaneously, the first defrosting valve and the second defrosting valve are opened or closed simultaneously, and the on-off state of the first condensation valve is opposite to that of the first defrosting valve.
2. The defrost system for a refrigerator of claim 1 wherein said first orifice is a capillary tube.
3. The defrost system for a refrigerator of claim 1 wherein said second orifice is a capillary tube.
4. The defrosting system for refrigerators according to claim 1, wherein the first condensing valve, the second condensing valve, the first defrosting valve, and the second defrosting valve are solenoid valves.
5. The defrosting system for refrigerators according to claim 4, wherein the first condensing valve, the second condensing valve, the first defrosting valve and the second defrosting valve are connected to a control assembly;
the control assembly comprises a defrosting judgment module and a controller, and the defrosting judgment module is in communication connection with the controller; the controller is electrically connected with the first condensing valve, the second condensing valve, the first defrosting valve and the second defrosting valve.
6. The defrosting system for refrigerators according to claim 5, wherein the defrosting decision module is a compressor operation time accumulation module.
7. The defrosting system for a refrigerator of claim 5 wherein the defrosting decision module is an evaporator temperature measurement module.
8. The defrosting system for a refrigerator of claim 5 wherein the defrosting determination module is a refrigerator door opening and closing times module.
9. An air-cooled refrigerator comprises a refrigerator body and a door body, wherein an air channel is arranged inside the refrigerator body, an air inlet communicated with the air channel is formed in the lower end of the refrigerator body, and an air outlet communicated with the air channel is formed in the upper end of the refrigerator body; a fan is arranged in the air duct; it is characterized in that the utility model is characterized in that,
the refrigerator is internally provided with the defrosting system for the refrigerator as claimed in any one of claims 1 to 8, and the evaporator and the liner evaporator are both arranged on the liner wall in the air duct;
the bottom of the evaporator is provided with a water pan, and the bottom of the water pan is provided with a drain pipe capable of discharging the defrosted water out of the refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011342857.3A CN112432413A (en) | 2020-11-26 | 2020-11-26 | Defrosting system for refrigerator and air-cooled refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011342857.3A CN112432413A (en) | 2020-11-26 | 2020-11-26 | Defrosting system for refrigerator and air-cooled refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN112432413A true CN112432413A (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011342857.3A Pending CN112432413A (en) | 2020-11-26 | 2020-11-26 | Defrosting system for refrigerator and air-cooled refrigerator |
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| Country | Link |
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| CN (1) | CN112432413A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115711511A (en) * | 2022-11-11 | 2023-02-24 | 珠海格力电器股份有限公司 | Thermal fluorination defrosting control method and device and refrigeration equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091437A (en) * | 2015-08-28 | 2015-11-25 | 合肥美菱股份有限公司 | Automatic defrosting system for air cooling refrigerator and control method of automatic defrosting system |
| CN106091504A (en) * | 2016-06-17 | 2016-11-09 | 西安交通大学 | A kind of refrigerator with automatic defrosting system and defrosting control method thereof |
| CN109737662A (en) * | 2018-12-25 | 2019-05-10 | 西安交通大学 | A kind of horizontal frostless refrigeration system of refrigerator of compact and defrosting control method |
-
2020
- 2020-11-26 CN CN202011342857.3A patent/CN112432413A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091437A (en) * | 2015-08-28 | 2015-11-25 | 合肥美菱股份有限公司 | Automatic defrosting system for air cooling refrigerator and control method of automatic defrosting system |
| CN106091504A (en) * | 2016-06-17 | 2016-11-09 | 西安交通大学 | A kind of refrigerator with automatic defrosting system and defrosting control method thereof |
| CN109737662A (en) * | 2018-12-25 | 2019-05-10 | 西安交通大学 | A kind of horizontal frostless refrigeration system of refrigerator of compact and defrosting control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115711511A (en) * | 2022-11-11 | 2023-02-24 | 珠海格力电器股份有限公司 | Thermal fluorination defrosting control method and device and refrigeration equipment |
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Application publication date: 20210302 |
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