CN112856889A - Refrigerator and control method thereof - Google Patents
Refrigerator and control method thereof Download PDFInfo
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- CN112856889A CN112856889A CN202110091137.2A CN202110091137A CN112856889A CN 112856889 A CN112856889 A CN 112856889A CN 202110091137 A CN202110091137 A CN 202110091137A CN 112856889 A CN112856889 A CN 112856889A
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- control valve
- evaporator
- compressor
- defrosting
- condenser
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000010257 thawing Methods 0.000 claims abstract description 71
- 238000009833 condensation Methods 0.000 claims abstract description 34
- 230000005494 condensation Effects 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims description 19
- 238000005057 refrigeration Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 description 19
- 238000007710 freezing Methods 0.000 description 10
- 230000008014 freezing Effects 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Classifications
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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
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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 refrigerator and a control method thereof, wherein the refrigerator comprises: the compressor, the condenser and the throttling element are connected in sequence; the first end of the first evaporator is connected with the throttling element, and the second end of the first evaporator is connected with an air suction port of the compressor; a first end of the first evaporator is connected with the first connecting point, and a second end of the first evaporator is connected with the air suction port of the compressor; wherein the first connection point is located between the condenser and the throttling element; the discharge port of the compressor is also connected to the second end of the first evaporator. The invention solves the problem that the condenser is easy to generate condensation in the defrosting process of the refrigerator in the prior art, and avoids condensation of the condenser.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and a control method thereof.
Background
After the existing air-cooled refrigerator runs for a period of time, the surface of an evaporator is too low in temperature, wet air in a compartment can be condensed on the surface of the evaporator in a frost form along with wind circulation, a frost layer is equivalent to an additional thermal resistance layer, and the heat exchange performance of the evaporator can be influenced when the frost layer is thick, so that the evaporator can be subjected to periodical defrosting operation in the prior art, and the wet air in the compartment is discharged in a defrosting water form.
In addition to heating, there are also refrigeration units that use hot air to defrost, but this solution, using a condenser as the evaporator, can cause severe condensation problems on the surface where the condenser is located.
Aiming at the problem that condensation is easily generated in a condenser in the defrosting process of a refrigerator in the related art, an effective solution is not provided at present.
Disclosure of Invention
The invention provides a refrigerator and a control method thereof, which at least solve the problem that condensation is easily generated in a condenser in the defrosting process of the refrigerator in the prior art.
To solve the above technical problem, according to an aspect of an embodiment of the present invention, there is provided a refrigerator including: the compressor 1, the condenser 4 and the throttling element 8 are connected in sequence; a first evaporator 10, a first end of which is connected with the throttling element 8 and a second end of which is connected with an air suction port of the compressor 1; a second evaporator 12 having a first end connected to the first connection point and a second end connected to the suction port of the compressor 1; wherein the first connection point is located between the condenser 4 and the throttling element 8; the discharge port of the compressor 1 is also connected to the second end of the first evaporator 10.
Further, still include: and the inlet of the first control valve 2 is connected with the exhaust port of the compressor 1, the first outlet is connected with the condenser 4, the second outlet is connected with the second end of the first evaporator 10, and the first control valve is used for controlling the exhaust port of the compressor 1 to be connected with the condenser 4 in the refrigeration mode and controlling the exhaust port of the compressor 1 to be connected with the second end of the first evaporator 10 in the defrosting mode.
Further, still include: and a second control valve 7 having one end connected to the first connection point and the other end connected to a first end of the second evaporator 12, and adapted to be closed in a cooling mode and opened in a defrosting mode.
Further, still include: and a third control valve 11 having one end connected to the second end of the first evaporator 10 and the other end connected to a suction port of the compressor 1, and configured to be opened in a cooling mode and closed in a defrosting mode.
Further, still include: and a return pipe 14 which is provided between the third control valve 11 and the suction port of the compressor 1 and is connected in parallel with the throttling element 8.
Further, still include: and a condensation preventing pipe 3 between the compressor 1 and the condenser 4.
Further, still include: a first dry filter 5 located between the condenser 4 and the first connection point; and a check valve 6 between the first filter-drier 5 and the first connection point.
Further, still include: a second drier-filter 9 located between the throttling element 8 and the first evaporator 10; the gas-liquid separator 13 is located at the suction port of the compressor 1.
Further, the second evaporator 12 is located at the top of the outer container of the compartment where the first evaporator 10 is located.
Further, still include: a fan; and the temperature controller is used for controlling the operation of the compressor 1 and the fan according to the temperature of the compartment where the first evaporator 10 is located in the cooling mode.
According to another aspect of the embodiments of the present invention, there is provided a refrigerator control method applied to the refrigerator as described above, including: detecting the accumulated running time of the compressor; controlling a first control valve, a second control valve and a third control valve according to the accumulated running time to enter a defrosting mode; detecting defrosting temperature; and controlling the first control valve, the second control valve and the third control valve according to the defrosting temperature, and entering a refrigeration mode.
Further, controlling the first control valve, the second control valve, and the third control valve according to the accumulated operation time includes: and after the accumulated running time reaches the preset time, controlling the connection of the inlet of the first control valve and the second outlet, opening the second control valve and closing the third control valve.
Further, controlling the first control valve, the second control valve, and the third control valve according to the defrosting temperature includes: and after the defrosting temperature reaches the preset temperature, controlling the inlet of the first control valve to be connected with the first outlet, closing the second control valve and opening the third control valve.
Further, after entering the defrosting mode, the method further comprises the following steps: controlling the fan to stop, and disconnecting control signals of the temperature controller to the compressor and the fan; after entering the cooling mode, the method further comprises the following steps: and controlling the fan to start, and recovering control signals of the temperature controller to the compressor and the fan.
According to still another aspect of an embodiment of the present invention, there is provided a storage medium containing computer-executable instructions for performing the refrigerator control method as described above when executed by a computer processor.
In the invention, the second evaporator is arranged, so that the second evaporator is used for refrigerating during defrosting, namely, the second evaporator is used as the evaporator instead of a condenser directly used as the evaporator, the mode can effectively solve the problem of serious condensation generated during defrosting of the condenser, and the condensation of the condenser is avoided.
Drawings
Fig. 1 is an alternative configuration diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is an alternative flowchart of a refrigerator control method according to an embodiment of the present invention; and
fig. 3 is another alternative flowchart of a refrigerator control method according to an embodiment of the present invention.
Description of reference numerals:
1. a compressor; 2. an electromagnetic valve; 3. an anti-condensation pipe; 4. a first condenser; 5. a first dry filter; 6. a one-way valve; 7. a first shut-off valve; 8. a capillary tube; 9. a second dry filter; 10. a first evaporator; 11. a second stop valve; 12. a second evaporator; 13. a gas-liquid separator; 14. and (4) an air return pipe.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example 1
In a preferred embodiment 1 of the present invention, there is provided a refrigerator, and in particular, fig. 1 shows an alternative structural schematic diagram of the refrigerator, as shown in fig. 1, the refrigerator includes:
the compressor 1, the condenser 4 and the throttling element 8 are connected in sequence;
a first evaporator 10, a first end of which is connected with the throttling element 8 and a second end of which is connected with an air suction port of the compressor 1;
a second evaporator 12 having a first end connected to the first connection point and a second end connected to the suction port of the compressor 1; wherein the first connection point is located between the condenser 4 and the throttling element 8;
the discharge port of the compressor 1 is also connected to the second end of the first evaporator 10.
In the above embodiment, by arranging the second evaporator, the second evaporator is used for refrigerating during defrosting, namely, the second evaporator is used as an evaporator instead of a condenser directly used as the evaporator, so that the problem of serious condensation generated during defrosting of the condenser can be effectively solved, and the condensation is avoided.
The invention applies the heat pump principle to heat the evaporator in the refrigerator, thereby defrosting the evaporator, leading the defrosting heat to be distributed more evenly and the defrosting heat to be utilized more fully, and having the advantage of saving energy.
As shown in fig. 1, the refrigerator further includes: and the inlet of the first control valve 2 is connected with the exhaust port of the compressor 1, the first outlet is connected with the condenser 4, the second outlet is connected with the second end of the first evaporator 10, and the first control valve is used for controlling the exhaust port of the compressor 1 to be connected with the condenser 4 in the refrigeration mode and controlling the exhaust port of the compressor 1 to be connected with the second end of the first evaporator 10 in the defrosting mode. Preferably, the first evaporator 10 is located in a freezer compartment, but may, of course, be located in a refrigerator or other compartment.
The refrigerator of the present invention further comprises: and a second control valve 7 having one end connected to the first connection point and the other end connected to a first end of the second evaporator 12, and adapted to be closed in a cooling mode and opened in a defrosting mode. And a third control valve 11 having one end connected to the second end of the first evaporator 10 and the other end connected to a suction port of the compressor 1, and configured to be opened in a cooling mode and closed in a defrosting mode.
In the refrigeration process, the refrigerant absorbs the heat of the freezing chamber in the first evaporator, after being compressed by the compressor, the refrigerant radiates heat to the environment through the first condenser, throttles through the first capillary tube and flows back to the first evaporator, and therefore the temperature of the chamber is reduced.
In the defrosting process, the refrigerant absorbs the heat of the freezing chamber in the second evaporator, after being compressed by the compressor, the refrigerant dissipates heat to the evaporation chamber through the first evaporator, and flows back to the second evaporator after being throttled by the capillary tube, so that the second evaporator heats the actual evaporator in the refrigerating operation, namely the first evaporator, while cooling the chamber, thereby achieving the purpose of defrosting the first evaporator, and the second evaporator continuously absorbs heat to solve the problem of 3K temperature rise of the intermediate chamber in the defrosting process. 3K means that the hottest temperature of the freezing chamber cannot exceed the hottest temperature of the stable stage by 3 ℃ (K) after defrosting in the test of the storage temperature and the freezing capacity of the air-cooled refrigerator. The first evaporator is used as a condenser, heat is dissipated from inside to outside and is distributed uniformly, and therefore energy consumption is lower. The defrosting process avoids the refrigerant to go through the components such as the condensation preventing pipe or the condenser, and the like, so as to prevent the condensation problem of the parts.
In a preferred embodiment of the present invention, the first evaporator 10 is a fin evaporator, and is disposed in an evaporation chamber behind a freezing chamber, and performs heat exchange with an air flow in an air duct system of a refrigerator during a cooling operation to further cool the refrigerator chamber, and during a defrosting operation, the first evaporator serves as a condenser, and at this time, a refrigerant dissipates heat into the evaporation chamber when flowing through the first evaporator 10, so that frosting accumulated during the cooling operation of the first evaporator 10 can be defrosted.
The second evaporator 12 is a bonding type evaporator, is bonded on the outer surface/other outer surfaces of the top of the inner container of the freezing chamber/other chambers, is preferentially attached to the outer surface of the top in consideration of the sinking characteristic of cold air, and is positioned between the inner container and a foaming layer after foaming of the refrigerator, so that the effective volume of the refrigerator cannot be occupied. When defrosting, the fan stops operating, at this time, the second evaporator 12 is equivalent to directly cooling the freezing chamber, and water vapor in the compartment is mainly accumulated on the outer surface of the first evaporator 10 through air circulation during cooling operation, so that the problem of condensation on the surface of the inner container of the compartment in which the second evaporator 12 is located during defrosting is not a concern. When defrosting, the second evaporator 12 is used for cooling the freezing chamber, and the requirement of 3K temperature rise of each chamber in defrosting and recovery periods by national standards can be effectively met.
As shown in fig. 1, the method further includes: and a return pipe 14 which is provided between the third control valve 11 and the suction port of the compressor 1 and is connected in parallel with the throttling element 8. The air return pipe and the throttling element are arranged in parallel to form a heat return cycle, so that the high-temperature refrigerant in the capillary tube and the low-temperature refrigerant at the outlet of the evaporator perform internal heat exchange, the refrigerant liquid is supercooled, the low-temperature steam is effectively superheated, and the refrigerating capacity can be increased.
In addition, the method further comprises the following steps: and a condensation preventing pipe 3 between the compressor 1 and the condenser 4. The condensation problem can also occur in the condensation prevention pipe in the traditional defrosting mode, and in the defrosting mode, the second evaporator 12 is adopted for refrigerating, so that a condenser and the condensation prevention pipe are avoided, and the condensation problem is effectively solved.
The refrigerator of the present invention further comprises: a first dry filter 5 located between the condenser 4 and the first connection point; and a check valve 6 between the first filter-drier 5 and the first connection point. And a second drier-filter 9 located between the throttling element 8 and the first evaporator 10; the gas-liquid separator 13 is located at the suction port of the compressor 1. The throttling element 8 can be a capillary tube, the second drying filter 9 is arranged to ensure that the refrigerant flowing through the throttling element 8 reversely cannot block the throttling element 8, the one-way valve 6 is arranged to not only relieve the pressure of the refrigerant in the condensation preventing pipe 3 and the condenser 4, but also ensure that the refrigerant cannot flow towards the direction, and direct reverse circulation is not adopted, namely the condenser 3 and the condensation preventing pipe 2 are used as evaporators, so that the problem of condensation on the surfaces of the parts can be prevented.
As can be seen from fig. 1, during cooling operation, the electromagnetic valve 2 is communicated with the condensation preventing pipe 3, the first stop valve 7 is closed, the second stop valve 11 is opened, and at this time, the refrigerant circuit is: the system comprises a compressor 1, an electromagnetic valve 2, an anti-condensation pipe 3, a condenser 4, a first drying filter 5, a one-way valve 6, a throttling element 8, a second drying filter 9, a first evaporator 10, a second stop valve 11, a return air pipe 82, a gas-liquid separator 13 and the compressor 1. In the circulation process, the refrigerant absorbs the heat of the freezing chamber in the first evaporator, after being compressed by the compressor, the refrigerant radiates heat to the environment through the first condenser, throttles through the first capillary tube and flows back to the first evaporator, and therefore the temperature of the chamber is reduced.
When defrosting is operated, the electromagnetic valve 2 is communicated with the first evaporator, the first stop valve 7 is opened, the second stop valve 11 is closed, at the moment, the first evaporator actually plays a role of a condenser, and the refrigerant loop is as follows: the system comprises a compressor 1, an electromagnetic valve 2, a first evaporator 10, a second drying filter 9, a throttling element 8, a first stop valve 7, a second evaporator 12, a gas-liquid separator 13 and the compressor 1.
In the circulation process, a refrigerant absorbs heat of a freezing chamber in a second evaporator, after being compressed by a compressor, the refrigerant dissipates heat to an evaporation chamber through a first evaporator and flows back to the second evaporator after being throttled by a capillary tube, so that the second evaporator heats an actual evaporator in refrigeration operation, namely the first evaporator, while cooling the chamber, the aim of defrosting the first evaporator is fulfilled, the second evaporator continuously absorbs heat to solve the problem of 3k temperature rise of the chamber in the defrosting process, the first evaporator is used as a condenser, the heat is dissipated from inside to outside and is uniformly distributed, and therefore energy consumption is lower. The defrosting process avoids the refrigerant from going through the condenser and other parts of the condensation preventing pipe, so as to prevent the condensation problem of the parts.
When the refrigeration is switched, the compressor 1 does not trip when switching because the setting of the check valve 6 and the first stop valve 7 are opened, the condensation preventing pipe 2 and the condenser 3 are communicated with the second evaporator 12 on the low-pressure side, the pressure of the condensation preventing pipe is reduced, and the second condenser 10 is on the high-pressure side. When the switching defrosting operation is performed, the first stop valve 7 is closed, the second stop valve 11 is opened, the connecting pipe between the electromagnetic valve 2 and the first evaporator 10 is directly communicated with the first evaporator 10, and the second evaporator 12 is also directly communicated with the first evaporator 10, so that when the switching defrosting operation is performed, the two sides of the inlet and the outlet of the compressor 1 are both low-pressure sides, and the trip cannot occur.
In addition, the refrigerator of the present invention further includes: a fan and a temperature controller, wherein the temperature controller is used for controlling the operation of the compressor 1 and the fan according to the temperature of the compartment where the first evaporator 10 is positioned in the cooling mode.
Example 2
In a preferred embodiment 2 of the present invention, there is provided a refrigerator control method applied to the refrigerator in the above-described embodiment 1. Specifically, fig. 2 shows an alternative flowchart of the method, and as shown in fig. 2, the method includes the following steps S202 to S208:
s202: detecting the accumulated running time of the compressor;
s204: controlling a first control valve, a second control valve and a third control valve according to the accumulated running time to enter a defrosting mode;
s206: detecting defrosting temperature;
s208: and controlling the first control valve, the second control valve and the third control valve according to the defrosting temperature, and entering a refrigeration mode.
In the above embodiment, by arranging the second evaporator, the second evaporator is used for refrigerating during defrosting, namely, the second evaporator is used as an evaporator instead of a condenser directly used as the evaporator, so that the problem of serious condensation generated during defrosting of the condenser can be effectively solved, and the condensation is avoided.
Controlling the first control valve, the second control valve, and the third control valve according to the accumulated operation time, including: and after the accumulated running time reaches the preset time, controlling the connection of the inlet of the first control valve and the second outlet, opening the second control valve and closing the third control valve.
Controlling a first control valve, a second control valve, and a third control valve according to a defrosting temperature, including: and after the defrosting temperature reaches the preset temperature, controlling the inlet of the first control valve to be connected with the first outlet, closing the second control valve and opening the third control valve.
After entering the defrosting mode, the method further comprises the following steps: controlling the fan to stop, and disconnecting control signals of the temperature controller to the compressor and the fan; after entering the cooling mode, the method further comprises the following steps: and controlling the fan to start, and recovering control signals of the temperature controller to the compressor and the fan.
Another refrigerator control method is further provided in preferred embodiment 2 of the present invention, and specifically, fig. 3 shows an alternative flowchart of the method, as shown in fig. 3, the method includes the following steps S302-S310:
s302, detecting the accumulated running time of the compressor;
s304, reversing the electromagnetic valve 2, opening the first stop valve, closing the second stop valve, and stopping the temperature controller of the compartment to control the start and stop of the compressor and the fan;
s306, the temperature of the defrosting sensor reaches a preset temperature;
s308, reversing the electromagnetic valve, closing the first stop valve and opening the second stop valve;
and S310, the temperature controller of the compartment recovers to control the start and stop of the compressor and the fan.
After the compressor 1 runs for a certain time in an accumulated mode, defrosting is started, the electromagnetic valve 2 is switched to the first evaporator 10, the first stop valve 7 is opened, the second stop valve 11 is closed, the room temperature sensor does not control the starting and stopping of the compressor 1 and the fan any more, the compressor 1 is kept started at the moment, and the fan is kept stopped. When the defrosting temperature sensor is higher than the preset temperature, defrosting is finished, the electromagnetic valve 2 is switched to be communicated with the condensation preventing pipe 3, the first stop valve 7 is closed, the second stop valve 11 is opened, the refrigeration loop is switched back, and then the compartment temperature sensor starts to control the start and stop of the compressor 1 and the fan again.
The starting process of defrosting is judged by using the accumulated running time of the compressor 1, and when the defrosting requirement is met, the compressor 1 is in a starting state, so that the starting process can be directly switched to a defrosting loop to defrost, the defrosting is carried out, the compressor 1 and a fan are not controlled by a room temperature sensor in the defrosting process, the defrosting can be continuously carried out, the second evaporator 10 keeps a direct cooling effect, the refrigerating loop is switched back after the defrosting is finished, the room is refrigerated, and after the switching action is finished, the room temperature sensor recovers and controls the start and stop of the fan of the compressor, so that the room temperature is adjusted.
Example 3
Based on the refrigerator control method provided in the above embodiment 2, there is also provided in a preferred embodiment 3 of the present invention a storage medium containing computer-executable instructions for performing the refrigerator control method as described above when executed by a computer processor.
In the above embodiment, by arranging the second evaporator, the second evaporator is used for refrigerating during defrosting, namely, the second evaporator is used as an evaporator instead of a condenser directly used as the evaporator, so that the problem of serious condensation generated during defrosting of the condenser can be effectively solved, and the condensation is avoided.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (15)
1. A refrigerator, characterized by comprising:
the compressor (1), the condenser (4) and the throttling element (8) are connected in sequence;
a first evaporator (10) having a first end connected to the throttling element (8) and a second end connected to a suction port of the compressor (1);
a second evaporator (12) having a first end connected to the first connection point and a second end connected to a suction port of the compressor (1); wherein the first connection point is located between the condenser (4) and the throttling element (8);
the exhaust port of the compressor (1) is also connected to the second end of the first evaporator (10).
2. The refrigerator according to claim 1, further comprising:
a first control valve (2) comprising an inlet, a first outlet and a second outlet; wherein, the entry with the gas vent of compressor (1) is connected, first export with condenser (4) are connected, the second export with the second end of first evaporimeter (10) is connected for when the mode of refrigerating, entry and first exit linkage control the gas vent of compressor (1) with condenser (4) are connected, and when the mode of defrosting, entry and second exit linkage control the gas vent of compressor (1) with the second end of first evaporimeter (10) is connected.
3. The refrigerator according to claim 1, further comprising:
and a second control valve (7) having one end connected to the first connection point and the other end connected to the first end of the second evaporator (12) and adapted to be closed in a cooling mode and opened in a defrosting mode.
4. The refrigerator according to claim 1, further comprising:
and one end of the third control valve (11) is connected with the second end of the first evaporator (10), and the other end of the third control valve is connected with a suction port of the compressor (1) and is used for being opened in a refrigeration mode and closed in a defrosting mode.
5. The refrigerator of claim 4, further comprising:
and the air return pipe (14) is positioned between the third control valve (11) and the air suction port of the compressor (1) and is connected with the throttling element (8) in parallel.
6. The refrigerator according to claim 1, further comprising:
and the condensation preventing pipe (3) is positioned between the compressor (1) and the condenser (4).
7. The refrigerator according to claim 1, further comprising:
-a first drying filter (5) located between the condenser (4) and the first connection point;
a one-way valve (6) located between the first filter-drier (5) and the first connection point.
8. The refrigerator according to claim 1, further comprising:
-a second drier filter (9) located between the throttling element (8) and the first evaporator (10);
and a gas-liquid separator (13) located at the suction port of the compressor (1).
9. The refrigerator according to claim 1,
the second evaporator (12) is positioned at the top of the outer container of the compartment where the first evaporator (10) is positioned.
10. The refrigerator according to claim 1, further comprising:
a fan;
and the temperature controller is used for controlling the operation of the compressor (1) and the fan according to the temperature of the chamber where the first evaporator (10) is located in the refrigerating mode.
11. A refrigerator control method applied to the refrigerator according to any one of claims 1 to 10, characterized by comprising:
detecting the accumulated running time of the compressor;
controlling a first control valve, a second control valve and a third control valve according to the accumulated running time to enter a defrosting mode;
detecting defrosting temperature;
and controlling the first control valve, the second control valve and the third control valve according to the defrosting temperature, and entering a refrigeration mode.
12. The method of claim 11, wherein controlling a first control valve, a second control valve, and a third control valve based on the accumulated run time comprises:
and after the accumulated running time reaches the preset time, controlling the connection of an inlet and a second outlet of the first control valve, opening the second control valve and closing the third control valve.
13. The method of claim 11, wherein controlling the first, second, and third control valves as a function of the defrost temperature comprises:
and after the defrosting temperature reaches a preset temperature, controlling the inlet of the first control valve to be connected with the first outlet, closing the second control valve, and opening the third control valve.
14. The method of claim 11,
after entering the defrosting mode, the method further comprises the following steps: controlling the fan to stop, and disconnecting control signals of a temperature controller to the compressor and the fan;
after entering the cooling mode, the method further comprises the following steps: and controlling the starting of the fan, and recovering control signals of the temperature controller to the compressor and the fan.
15. A storage medium containing computer-executable instructions, which when executed by a computer processor, is for performing the refrigerator control method of any one of claims 11 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110091137.2A CN112856889B (en) | 2021-01-22 | 2021-01-22 | Refrigerator and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110091137.2A CN112856889B (en) | 2021-01-22 | 2021-01-22 | Refrigerator and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112856889A true CN112856889A (en) | 2021-05-28 |
| CN112856889B CN112856889B (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110091137.2A Active CN112856889B (en) | 2021-01-22 | 2021-01-22 | Refrigerator and control method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1322859C (en) * | 1988-10-06 | 1993-10-12 | Richard C. Hill | Refrigerator |
| CN2540610Y (en) * | 2002-04-24 | 2003-03-19 | 广东科龙电器股份有限公司 | Air-cooled refrigerator |
| CN1818498A (en) * | 2006-02-27 | 2006-08-16 | 黄道德 | Hot-pump water heater with air source |
| CN102353213A (en) * | 2011-08-19 | 2012-02-15 | 合肥美的荣事达电冰箱有限公司 | Refrigerating system and refrigerator with same |
| CN105865103A (en) * | 2016-04-25 | 2016-08-17 | 合肥晶弘电器有限公司 | Auxiliary defrosting method, refrigerator defrosting method, refrigerating system and refrigerator |
| CN206514566U (en) * | 2016-12-27 | 2017-09-22 | 珠海格力电器股份有限公司 | Air-cooled cold and hot water unit |
-
2021
- 2021-01-22 CN CN202110091137.2A patent/CN112856889B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1322859C (en) * | 1988-10-06 | 1993-10-12 | Richard C. Hill | Refrigerator |
| CN2540610Y (en) * | 2002-04-24 | 2003-03-19 | 广东科龙电器股份有限公司 | Air-cooled refrigerator |
| CN1818498A (en) * | 2006-02-27 | 2006-08-16 | 黄道德 | Hot-pump water heater with air source |
| CN102353213A (en) * | 2011-08-19 | 2012-02-15 | 合肥美的荣事达电冰箱有限公司 | Refrigerating system and refrigerator with same |
| CN105865103A (en) * | 2016-04-25 | 2016-08-17 | 合肥晶弘电器有限公司 | Auxiliary defrosting method, refrigerator defrosting method, refrigerating system and refrigerator |
| CN206514566U (en) * | 2016-12-27 | 2017-09-22 | 珠海格力电器股份有限公司 | Air-cooled cold and hot water unit |
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| Publication number | Publication date |
|---|---|
| CN112856889B (en) | 2022-06-21 |
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