CN116412604A - Refrigerator and refrigeration control method thereof - Google Patents
Refrigerator and refrigeration control method thereof Download PDFInfo
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- CN116412604A CN116412604A CN202310438844.3A CN202310438844A CN116412604A CN 116412604 A CN116412604 A CN 116412604A CN 202310438844 A CN202310438844 A CN 202310438844A CN 116412604 A CN116412604 A CN 116412604A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 252
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000003507 refrigerant Substances 0.000 claims abstract description 157
- 238000007710 freezing Methods 0.000 claims abstract description 93
- 230000008014 freezing Effects 0.000 claims abstract description 93
- 238000001816 cooling Methods 0.000 claims description 71
- 238000007906 compression Methods 0.000 abstract description 18
- 230000006835 compression Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 12
- 238000001704 evaporation Methods 0.000 description 11
- 230000008020 evaporation Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 235000013305 food Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000011555 saturated liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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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
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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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)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a refrigerator and a refrigeration control method thereof, wherein the refrigerator comprises a refrigerator body, a refrigeration system and a controller, and the refrigeration system comprises a first refrigeration system and a second refrigeration system; the controller is configured to operate the first refrigeration system when the refrigerator is in normal refrigeration, wherein R600a refrigerant enters the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator for refrigeration; when the refrigerator operates for cryogenic refrigeration, the first refrigeration system and the second refrigeration system operate simultaneously; the R600a refrigerant enters a refrigeration evaporator and a temperature-changing evaporator to perform refrigeration; the R290 refrigerant enters the second evaporator to cool the freezing chamber. According to the invention, for a three-system refrigerator, a double-compressor double-refrigerating system is used, two refrigerating systems use different refrigerants, whether the second refrigerating system is started or not can be selected according to different refrigerating demands, and the second refrigerating system can realize corresponding refrigerating demands by adopting a smaller compression ratio due to overlapping effect, so that the refrigerating efficiency is effectively improved, and the noise in the refrigerating process is reduced.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and a refrigeration control method thereof.
Background
In order to achieve the aim of cryogenic refrigeration, the existing refrigerator refrigerating system generally adopts R290 refrigerant or mixed refrigerant, but the existing refrigerating system only adopts a single working condition, and can not change the refrigerant for circulating refrigeration according to different refrigerating working conditions. In a refrigerator using a mixed refrigerant, R290 refrigerant is cooled by R600a refrigerant, then the freezing chamber is cooled by R290 refrigerant, and the other compartments are cooled by R600a refrigerant in a deep cooling state. Under the ordinary state, the existing refrigerating system uses the mixed refrigerant of the R600a refrigerant and the R290 refrigerant to refrigerate the compartment, so that the compression ratio is large, the energy consumption is high, the refrigerating efficiency is low, and the vibration generated by the refrigerator compressor in the working process is large because of the compression ratio is large, and the noise of the refrigerator in the whole refrigerating process is high.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a refrigerator and a refrigeration control method thereof, wherein for a three-system refrigerator, a double-compressor double-refrigeration system is used, two refrigeration systems use different refrigerants, whether a second refrigeration system is started or not can be selected according to different refrigeration demands, and the second refrigeration system can realize corresponding refrigeration demands by adopting a smaller compression ratio due to overlapping effect, so that the refrigeration efficiency is effectively improved, and the noise in the refrigeration process is reduced.
The refrigerator provided in the first embodiment of the present invention includes:
the refrigerator comprises a refrigerator body, a plurality of compartments and a plurality of air inlets, wherein the refrigerator body is used as a supporting structure of the refrigerator;
the refrigerating system is arranged in the box body and comprises a first refrigerating system and a second refrigerating system;
the first refrigeration system comprises a first compressor, a first condenser, an electric valve, a refrigeration evaporator, a temperature-changing evaporator and a freezing evaporator; the second refrigeration system comprises a second compressor, a second condenser and a second evaporator; wherein, the first refrigeration system adopts R600a refrigerant, and the second refrigeration system adopts R290 refrigerant;
the exhaust port of the first compressor is connected with the inlet of the first condenser, the outlet of the first condenser is connected with the electric valve, and the electric valve is used for dividing the R600a refrigerant into three paths and respectively entering different refrigeration pipelines;
the exhaust port of the second compressor is connected with the inlet of the second condenser, the outlet of the second condenser is connected with the inlet of the second evaporator, and the outlet of the second evaporator is connected with the air suction port of the second compressor;
the controller is configured to control the first refrigeration system to operate when the refrigerator operates in a normal refrigeration mode; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant respectively enters the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator through the electric valve for refrigeration;
When the refrigerator operates in a deep cooling mode, the first refrigerating system and the second refrigerating system are controlled to operate simultaneously; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant enters the refrigeration evaporator and the temperature-changing evaporator respectively through the electric valve to perform refrigeration; and the R290 refrigerant sequentially passes through the second compressor and the second condenser and then enters the second evaporator to refrigerate the freezing chamber.
In the refrigerator provided by the second embodiment of the present invention, the refrigeration pipeline includes a first refrigeration pipeline, a second refrigeration pipeline and a third refrigeration pipeline;
the first refrigeration pipeline is connected with a first outlet of the electric valve, passes through a first capillary tube and the refrigeration evaporator and then is led into an air suction port of the first compressor;
the second refrigeration pipeline is connected with a second outlet of the electric valve, passes through a second capillary tube and the variable-temperature evaporator and then is led into an air suction port of the first compressor;
the third refrigeration pipeline is connected with a third outlet of the electric valve, passes through a third capillary tube and the freezing evaporator and then is led into an air suction port of the first compressor.
In the refrigerator provided by the third embodiment of the invention, when the refrigerator operates in the normal refrigeration mode, the first outlet, the second outlet and the third outlet of the electric valve are all in an open state;
when the refrigerator operates in a deep cooling mode, the first outlet and the second outlet of the electric valve are in an open state, and the third outlet is in a closed state.
In the refrigerator provided by the fourth embodiment of the invention, the outlet of the refrigeration evaporator, the outlet of the temperature-changing evaporator and the outlet of the freezing evaporator are all connected with the air suction port of the first compressor; and after passing through the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator, the R600a refrigerant is converged and then is introduced into the air suction port of the first compressor again.
In the refrigerator provided by the fifth embodiment of the present invention, the second condenser and the variable temperature evaporator are disposed opposite to each other, so that heat exchange is performed between the second condenser and the variable temperature evaporator; the second evaporator and the freezing evaporator are oppositely arranged so that heat exchange is carried out between the second evaporator and the freezing evaporator; the R290 refrigerant is cooled by the variable temperature evaporator as it passes through the second condenser.
The refrigeration control method of the refrigerator provided in the sixth embodiment of the present invention is applied to a refrigerator including a cabinet and a refrigeration system; wherein, a plurality of compartments are arranged in the box body, and the refrigerating system comprises a first refrigerating system and a second refrigerating system; the first refrigeration system comprises a first compressor, a first condenser, an electric valve, a refrigeration evaporator, a temperature-changing evaporator and a freezing evaporator; the second refrigeration system comprises a second compressor, a second condenser and a second evaporator; wherein, the first refrigeration system adopts R600a refrigerant, and the second refrigeration system adopts R290 refrigerant; the electric valve is used for dividing the R600a refrigerant into three paths and respectively entering different refrigeration pipelines, and the refrigerator refrigeration control method comprises the following steps:
when the refrigerator operates in a common refrigeration mode, controlling the first refrigeration system to operate; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant respectively enters the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator through the electric valve for refrigeration;
when the refrigerator operates in a deep cooling mode, the first refrigerating system and the second refrigerating system are controlled to operate simultaneously; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant enters the refrigeration evaporator and the temperature-changing evaporator respectively through the electric valve to perform refrigeration; and the R290 refrigerant sequentially passes through the second compressor and the second condenser and then enters the second evaporator to refrigerate the freezing chamber.
In the refrigeration control method for a refrigerator provided by the seventh embodiment of the present invention, the refrigeration pipeline includes a first refrigeration pipeline, a second refrigeration pipeline and a third refrigeration pipeline;
the first refrigeration pipeline is connected with a first outlet of the electric valve, passes through a first capillary tube and the refrigeration evaporator and then is led into an air suction port of the first compressor;
the second refrigeration pipeline is connected with a second outlet of the electric valve, passes through a second capillary tube and the variable-temperature evaporator and then is led into an air suction port of the first compressor;
the third refrigeration pipeline is connected with a third outlet of the electric valve, passes through a third capillary tube and the freezing evaporator and then is led into an air suction port of the first compressor.
In the refrigeration control method for a refrigerator provided by the eighth embodiment of the present invention, when the refrigerator is operated in a normal refrigeration mode, the first outlet, the second outlet and the third outlet of the electric valve are all in an open state;
when the refrigerator operates in a deep cooling mode, the first outlet and the second outlet of the electric valve are in an open state, and the third outlet is in a closed state.
In the refrigeration control method for a refrigerator provided by the ninth embodiment of the present invention, the outlet of the refrigeration evaporator, the outlet of the temperature-changing evaporator and the outlet of the freezing evaporator are all connected with the air suction port of the first compressor; and after passing through the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator, the R600a refrigerant is converged and then is introduced into the air suction port of the first compressor again.
In the refrigeration control method for a refrigerator according to the tenth embodiment of the present invention, the second condenser and the variable temperature evaporator are disposed opposite to each other, so that heat exchange is performed between the second condenser and the variable temperature evaporator; the second evaporator and the freezing evaporator are oppositely arranged so that heat exchange is carried out between the second evaporator and the freezing evaporator; the R290 refrigerant is cooled by the variable temperature evaporator as it passes through the second condenser.
Compared with the prior art, the refrigerator and the refrigeration control method thereof provided by the embodiment of the invention have the beneficial effects that: for the three-system refrigerator, the double-compressor double-refrigerating system is used, and the two refrigerating systems use different refrigerants, so that whether the second refrigerating system is started or not can be selected according to different refrigerating demands, and the advantages of different refrigerants are effectively utilized. And the second refrigeration system can realize corresponding refrigeration demands by adopting smaller compression ratio due to the overlapping effect, thereby effectively improving the refrigeration efficiency and reducing the noise in the refrigeration process. When the refrigerator operates in the normal cooling mode, the freezing chamber does not use R290 refrigerant for cooling any more, but the R290 cooling system is closed, and the R600a refrigerant is used for cooling only. In the common refrigeration mode, the single R600a refrigerant is different from the cascade refrigeration used in the prior art, and the single R600a refrigerant has higher refrigeration efficiency, is more energy-saving and has lower noise. When the refrigerator operates in a deep cooling mode, the freezing chamber needs to reach a lower cooling temperature, so that the freezing chamber of the refrigerator uses R290 refrigerant for cooling, and other compartments of the refrigerator still use R600a refrigerant for cooling. In the refrigerating process, the compressor has smaller compression ratio and higher efficiency compared with the single refrigerant used by other products, and the refrigerator has lower noise in the whole refrigerating process because the refrigerator compressor generates smaller vibration in the working process because of smaller compression ratio.
Drawings
Fig. 1 is a schematic view of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic view of a refrigerator body of a refrigerator according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating a structure of a compartment of a refrigerator according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a refrigerating system of a refrigerator according to an embodiment of the present invention;
fig. 5 is a schematic diagram showing the distribution of evaporators in a refrigeration system of a refrigerator according to an embodiment of the present invention;
fig. 6 is a schematic view illustrating a position of a second condenser in a refrigeration system of a refrigerator according to an embodiment of the present invention;
fig. 7 is a schematic view illustrating a position of a second evaporator in a refrigeration system of a refrigerator according to an embodiment of the present invention;
fig. 8 is a schematic flow diagram of a refrigerant in a refrigerator according to an embodiment of the present invention during normal cooling;
fig. 9 is a schematic flow diagram of a refrigerant in a refrigerator according to an embodiment of the present invention during cryogenic refrigeration;
fig. 10 is a flow chart of a refrigeration control method of a refrigerator according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the invention. The refrigerator provided by the embodiment of the invention comprises:
the refrigerator comprises a refrigerator body 10, a plurality of compartments and a plurality of supporting structures, wherein the refrigerator body is used as a supporting structure of a refrigerator;
a refrigeration system 20 disposed within the cabinet and including a first refrigeration system and a second refrigeration system;
the first refrigeration system comprises a first compressor, a first condenser, an electric valve, a refrigeration evaporator, a temperature-changing evaporator and a freezing evaporator; the second refrigeration system comprises a second compressor, a second condenser and a second evaporator; wherein, the first refrigeration system adopts R600a refrigerant, and the second refrigeration system adopts R290 refrigerant;
the exhaust port of the first compressor is connected with the inlet of the first condenser, the outlet of the first condenser is connected with the electric valve, and the electric valve is used for dividing the R600a refrigerant into three paths and respectively entering different refrigeration pipelines;
the exhaust port of the second compressor is connected with the inlet of the second condenser, the outlet of the second condenser is connected with the inlet of the second evaporator, and the outlet of the second evaporator is connected with the air suction port of the second compressor;
A controller 30 configured to control the first refrigeration system to operate when the refrigerator operates in a normal cooling mode; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant respectively enters the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator through the electric valve for refrigeration;
when the refrigerator operates in a deep cooling mode, the first refrigerating system and the second refrigerating system are controlled to operate simultaneously; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant enters the refrigeration evaporator and the temperature-changing evaporator respectively through the electric valve to perform refrigeration; and the R290 refrigerant sequentially passes through the second compressor and the second condenser and then enters the second evaporator to refrigerate the freezing chamber.
Specifically, the refrigerator provided by the embodiment of the invention comprises a refrigerator body 10, a refrigerating system 20 and a controller 30. Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of a refrigerator body according to an embodiment of the present invention, and fig. 3 is a schematic structural diagram of a compartment of the refrigerator according to an embodiment of the present invention. The refrigerator in this embodiment has an approximately rectangular parallelepiped shape, and includes a cabinet 10 defining a storage space. The cabinet 10 serves as a supporting structure of the refrigerator and has a chamber inside, wherein the chamber includes a component storage chamber for storing components in the refrigerator, such as a compressor, etc., and a storage space for storing foods, etc. The storage space may be partitioned into a plurality of storage compartments (i.e., compartments), which may be configured as a refrigerating compartment 101, a temperature changing compartment 102 (also referred to as a fresh food compartment), and a freezing compartment 103, depending on the purpose. One or more doors 200 are provided at each storage compartment opening, for example, in fig. 2, the upper storage compartment is a refrigerator compartment with a double door. The door body 200 includes a door body housing 210 located outside the box body 10, a door body liner 220 located inside the box body 10, an upper end cover 230, a lower end cover 240, and a heat insulation layer located between the door body housing 210, the door body liner 220, the upper end cover 230, and the lower end cover 240; typically, the insulating layer is filled with a foaming material. The door body can be pivoted at the opening of the box body and can also be opened in a drawer mode, so that drawer type storage is realized.
The refrigerator performs a cooling operation by a cooling system, and provides cooling power to the compartment to maintain the compartment in a constant low temperature state. Specifically, the refrigeration system of the refrigerator in this embodiment is a three-refrigeration system of a double compressor. Referring to fig. 4, fig. 4 is a schematic structural diagram of a refrigeration system of a refrigerator according to an embodiment of the invention. The refrigerating system of the refrigerator comprises a first refrigerating system and a second refrigerating system. The first refrigeration system comprises a first compressor 1, a first condenser 2, an electric valve 3, a refrigeration evaporator 4, a temperature-changing evaporator 5 and a freezing evaporator 6. The second refrigeration system comprises a second compressor 7, a second condenser 8 and a second evaporator 9. Wherein, the first refrigerating system adopts R600a refrigerant, and the second refrigerating system adopts R290 refrigerant. Referring to fig. 5, fig. 5 is a schematic distribution diagram of an evaporator in a refrigeration system of a refrigerator according to an embodiment of the invention. The refrigerating evaporator 4, the temperature-changing evaporator 5 and the freezing evaporator 6 are respectively arranged in the corresponding compartments for refrigerating the compartments. That is, the refrigeration evaporator 4 is provided in the refrigeration compartment 101 to cool the refrigeration compartment 101, the temperature change evaporator 5 is provided in the temperature change compartment 102 to cool the temperature change compartment 102, and the freezing evaporator 6 is provided in the freezing compartment 103 to cool the freezing compartment 103. Since the second refrigeration system is used to cool the freezing chamber, the second evaporator 9 is disposed inside the freezing chamber 103. Referring to fig. 6 and 7, fig. 6 is a schematic diagram illustrating a position of a second condenser in a refrigeration system of a refrigerator according to an embodiment of the invention, and fig. 7 is a schematic diagram illustrating a position of a second evaporator in a refrigeration system of a refrigerator according to an embodiment of the invention. The second condenser 8 and the variable temperature evaporator 5 are arranged oppositely so that the second condenser 8 and the variable temperature evaporator 5 exchange heat with each other; the second evaporator 9 and the freezing evaporator 6 are arranged opposite to each other so that the second evaporator 9 and the freezing evaporator 6 exchange heat with each other; the R290 refrigerant is cooled by the variable temperature evaporator 5 as it passes through the second condenser 8. The exhaust port of the first compressor 1 is connected with the inlet of the first condenser 2, the outlet of the first condenser 2 is connected with the electric valve 3, the electric valve 3 is used for dividing R600a refrigerant into A, B, C three paths, the A, B, C paths respectively enter different refrigeration pipelines, and the three paths are finally combined together and returned to the air suction port of the compressor. The exhaust port of the second compressor 7 is connected to the inlet of the second condenser 8, the outlet of the second condenser 8 is connected to the inlet of the second evaporator 9, and the outlet of the second evaporator 9 is connected to the suction port of the second compressor 7.
The operational components of the refrigeration system include a compression process, a condensation process, a throttling process, and an evaporation process.
The compression process comprises the following steps: a refrigerator power line is inserted, under the condition that the refrigerator body has refrigeration requirement, the compressor starts to work, low-temperature and low-pressure refrigerant is sucked by the compressor, and the refrigerant is compressed into high-temperature and high-pressure superheated gas in a compressor cylinder and then is discharged into a condenser;
the condensation process is as follows: the high-temperature and high-pressure refrigerant gas is radiated through the condenser, the temperature is continuously reduced, the refrigerant gas is gradually cooled into normal-temperature and high-pressure saturated steam, the saturated steam is further cooled into saturated liquid, the temperature is not reduced any more, the temperature at the moment is called as condensation temperature, and the pressure of the refrigerant in the whole condensation process is almost unchanged;
the throttling process is as follows: the condensed refrigerant saturated liquid is filtered by a drying filter to remove moisture and impurities, and then flows into a capillary tube, throttling and depressurization are carried out through the capillary tube, and the refrigerant is changed into wet vapor at normal temperature and low pressure;
the evaporation process is as follows: then the evaporator begins to absorb heat to vaporize, so that the temperature of the evaporator and the surrounding area are reduced, the refrigerant is changed into low-temperature and low-pressure gas, the refrigerant from the evaporator returns to the compressor again, the process is repeated, and the heat in the refrigerator is transferred to the air outside the refrigerator, so that the purpose of refrigeration is achieved.
Referring to fig. 8, fig. 8 is a schematic flow diagram of a refrigerant in a refrigerator according to an embodiment of the invention during normal cooling. When the refrigerator is operated in the normal cooling mode, the first cooling system is controlled to operate. At this time, the refrigerant enters the first condenser 2 from the exhaust port of the first compressor 1 for cooling, the R600a refrigerant coming out from the outlet of the first condenser 2 enters the inlet of the electric valve 3 and is divided into A, B, C three paths, and the refrigerant enters the refrigeration evaporator 4, the variable temperature evaporator 5 and the freezing evaporator 6 through capillaries respectively, and respectively absorbs the heat by evaporation in different evaporators, cools different compartments, and finally merges together and returns to the air suction port on the right side of the compressor. The refrigerating cycle is performed in a reciprocating manner in this way, and the refrigerator is refrigerated. At the moment, the refrigerating system uses R600a for refrigerating, so that the refrigerating efficiency is high, the energy consumption is low, and the noise is low.
Referring to fig. 9, fig. 9 is a schematic flow diagram of a refrigerant in a refrigerator according to an embodiment of the invention. When the refrigerator is operated in the deep cooling mode, the first cooling system and the second cooling system are controlled to operate simultaneously. At this time, the refrigerant enters the first condenser 2 from the exhaust port of the first compressor 1 for cooling, the R600a refrigerant coming out from the outlet of the first condenser 2 enters the inlet of the electric valve 3 and is divided into A, B paths, and the paths respectively enter the refrigeration evaporator 4 and the variable-temperature evaporator 5 through capillary tubes, respectively absorb heat by evaporation in different evaporators, cool different compartments, finally merge together and return to the air suction port on the right side of the compressor. At this time, the electric valve C is in a closed state, the second refrigerating system is started to refrigerate, the second refrigerating system adopts R290 refrigerant, the second condenser 8 is positioned at the position of the variable temperature evaporator 5, the variable temperature evaporator 5 cools the refrigerant and then can cool the refrigerant to a relatively low temperature, at this time, the R290 refrigerant is in a liquid state, and enters the second evaporator 9 in the freezing chamber after passing through the left capillary tube to absorb heat by evaporation, and the temperature of the R290 refrigerant is low, so the temperature of the freezing chamber can be reduced to be very low, and the refrigerating cycle is performed in a circulating way to refrigerate the refrigerator. It should be noted that the first refrigeration system has a much higher operating power than the second refrigeration system, so that the refrigeration of the refrigerating chamber and the temperature-changing chamber can be satisfied, and the second condenser 8 can be cooled. At this time, the refrigerating chamber and the temperature changing chamber in the refrigerating system use R600a for refrigerating, so that the refrigerating efficiency is high, the energy consumption is low, the noise is low, and the freezing chamber uses R290 refrigerant for refrigerating, so that the cryogenic temperature can be extremely low.
According to the embodiment of the invention, for the three-system refrigerator, the double-compressor double-refrigerating system is used, the two refrigerating systems use different refrigerants, whether the second refrigerating system is started or not can be selected according to different refrigerating demands, and the advantages of different refrigerants are effectively utilized. And the second refrigeration system can realize corresponding refrigeration demands by adopting smaller compression ratio due to the overlapping effect, thereby effectively improving the refrigeration efficiency and reducing the noise in the refrigeration process. When the refrigerator operates in the normal cooling mode, the freezing chamber does not use R290 refrigerant for cooling any more, but the R290 cooling system is closed, and the R600a refrigerant is used for cooling only. In the common refrigeration mode, the single R600a refrigerant is different from the cascade refrigeration used in the prior art, and the single R600a refrigerant has higher refrigeration efficiency, is more energy-saving and has lower noise. When the refrigerator operates in a deep cooling mode, the freezing chamber needs to reach a lower cooling temperature, so that the freezing chamber of the refrigerator uses R290 refrigerant for cooling, and other compartments of the refrigerator still use R600a refrigerant for cooling. In the refrigerating process, the compressor has smaller compression ratio and higher efficiency compared with the single refrigerant used by other products, and the refrigerator has lower noise in the whole refrigerating process because the refrigerator compressor generates smaller vibration in the working process because of smaller compression ratio.
As one of the optional embodiments, the refrigeration pipeline comprises a first refrigeration pipeline, a second refrigeration pipeline and a third refrigeration pipeline;
the first refrigeration pipeline is connected with a first outlet of the electric valve 3, passes through a first capillary tube 10 and the refrigeration evaporator 4 and then is led into an air suction port of the first compressor 1;
the second refrigeration pipeline is connected with a second outlet of the electric valve 3, passes through a second capillary tube 11 and the variable temperature evaporator 5 and then is led into an air suction port of the first compressor 1;
the third refrigerating pipeline is connected with a third outlet of the electric valve 3, passes through a third capillary tube 12 and the freezing evaporator 6 and then is led into an air suction port of the first compressor 1.
Specifically, in the embodiment of the present invention, the electric valve 3 is used to divide the R600a refrigerant into three paths A, B, C, and the three paths respectively enter different refrigeration pipelines. The refrigerating pipeline comprises a first refrigerating pipeline A, a second refrigerating pipeline B and a third refrigerating pipeline C. The first refrigeration pipeline is connected with a first outlet of the electric valve 3, passes through the first capillary tube 10 and the refrigeration evaporator 4 and then is led into the air suction port of the first compressor 1. The second refrigeration pipeline is connected with a second outlet of the electric valve 3, and is introduced into an air suction port of the first compressor 1 after passing through the second capillary tube 11 and the variable temperature evaporator 5. The third refrigerating pipeline is connected with a third outlet of the electric valve 3, passes through a third capillary tube 12 and the freezing evaporator 6 and then is led into the air suction port of the first compressor 1.
As one of the alternative embodiments, when the refrigerator is operated in the normal cooling mode, the first outlet, the second outlet and the third outlet of the electric valve are all in an open state;
when the refrigerator operates in a deep cooling mode, the first outlet and the second outlet of the electric valve are in an open state, and the third outlet is in a closed state.
Specifically, in the embodiment of the present invention, when the refrigerator is operated in the normal cooling mode, the first outlet, the second outlet and the third outlet of the electric valve 3 are all in an open state. The refrigerant enters the first condenser 2 from the exhaust port of the first compressor 1 for cooling, the R600a refrigerant coming out from the outlet of the first condenser 2 enters the inlet of the electric valve 3 and is divided into A, B, C three paths, and the refrigerant enters the refrigeration evaporator 4, the variable-temperature evaporator 5 and the freezing evaporator 6 through capillary tubes respectively, and respectively absorbs evaporation and heat in different evaporators to cool different compartments, and finally is converged together and returns to the air suction port on the right side of the compressor. When the refrigerator is operated in the deep cooling mode, the first and second outlets of the electric valve 3 are in an open state, and the third outlet is in a closed state. The refrigerant enters the first condenser 2 from the exhaust port of the first compressor 1 for cooling, the R600a refrigerant coming out from the outlet of the first condenser 2 enters the inlet of the electric valve 3 and is divided into A, B paths, and the paths respectively pass through the capillary tube, enter the refrigeration evaporator 4 and the variable temperature evaporator 5, respectively absorb heat by evaporation in different evaporators, cool different compartments, finally merge together and return to the air suction port on the right side of the compressor. At this time, the electric valve C is in a closed state, the second refrigerating system is started to refrigerate, the second refrigerating system adopts R290 refrigerant, the second condenser 8 is positioned at the position of the variable temperature evaporator 5, the variable temperature evaporator 5 cools the refrigerant and then can cool the refrigerant to a relatively low temperature, at this time, the R290 refrigerant is in a liquid state, and enters the second evaporator 9 in the freezing chamber after passing through the left capillary tube to absorb heat by evaporation, and the temperature of the R290 refrigerant is low, so the temperature of the freezing chamber can be reduced to be very low, and the refrigerating cycle is performed in a circulating way to refrigerate the refrigerator.
As one of the alternative embodiments, the outlet of the refrigeration evaporator 4, the outlet of the temperature-varying evaporator 5 and the outlet of the freezing evaporator 6 are all connected with the suction port of the first compressor 1; the R600a refrigerant passes through the refrigeration evaporator 4, the temperature-changing evaporator 5 and the freezing evaporator 6, and then is converged together and is introduced into the air suction port of the first compressor 1 again.
Specifically, in the embodiment of the present invention, the outlet of the cooling evaporator 4, the outlet of the temperature changing evaporator 5 and the outlet of the freezing evaporator 6 are all connected with the air suction port of the first compressor 1, and after passing through the refrigerating evaporator 4, the temperature changing evaporator 5 and the freezing evaporator 6, the R600a refrigerant is converged and then is introduced into the air suction port of the first compressor 1 again.
As one of the alternative embodiments, the second condenser 8 and the variable temperature evaporator 5 are disposed opposite to each other so that the second condenser 8 and the variable temperature evaporator 5 exchange heat with each other; the second evaporator 9 and the freezing evaporator 6 are arranged opposite to each other, so that the second evaporator 9 and the freezing evaporator 6 exchange heat with each other; the R290 refrigerant is cooled by the temperature swing evaporator 5 as it passes through the second condenser 8.
Specifically, in the embodiment of the present invention, the second condenser 8 and the variable temperature evaporator 5 are disposed opposite to each other, so that the second condenser 8 and the variable temperature evaporator 5 exchange heat with each other, and when the R290 refrigerant passes through the second condenser 8, the variable temperature evaporator 5 cools the refrigerant, so that the refrigerant can be cooled to a relatively low temperature, and at this time, the R290 refrigerant is in a liquid state. The second evaporator 9 and the freezing evaporator 6 are disposed opposite to each other so that the second evaporator 9 and the freezing evaporator 6 exchange heat with each other.
Referring to fig. 10, fig. 10 is a flow chart of a refrigeration control method of a refrigerator according to an embodiment of the invention. The refrigerator refrigeration control method provided by the embodiment of the invention is applied to a refrigerator comprising a refrigerator body and a refrigeration system; wherein, a plurality of compartments are arranged in the box body, and the refrigerating system comprises a first refrigerating system and a second refrigerating system; the first refrigeration system comprises a first compressor, a first condenser, an electric valve, a refrigeration evaporator, a temperature-changing evaporator and a freezing evaporator; the second refrigeration system comprises a second compressor, a second condenser and a second evaporator; wherein, the first refrigeration system adopts R600a refrigerant, and the second refrigeration system adopts R290 refrigerant; the exhaust port of the first compressor is connected with the inlet of the first condenser, the outlet of the first condenser is connected with the electric valve, and the electric valve is used for dividing the R600a refrigerant into three paths and respectively entering different refrigeration pipelines; the air outlet of the second compressor is connected with the inlet of the second condenser, the outlet of the second condenser is connected with the inlet of the second evaporator, the outlet of the second evaporator is connected with the air suction port of the second compressor, and the refrigerator refrigeration control method comprises the following steps:
S1, when a refrigerator operates in a common refrigeration mode, controlling the first refrigeration system to operate; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant respectively enters the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator through the electric valve for refrigeration;
s2, when the refrigerator operates in a deep refrigeration mode, controlling the first refrigeration system and the second refrigeration system to operate simultaneously; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant enters the refrigeration evaporator and the temperature-changing evaporator respectively through the electric valve to perform refrigeration; and the R290 refrigerant sequentially passes through the second compressor and the second condenser and then enters the second evaporator to refrigerate the freezing chamber.
According to the embodiment of the invention, for the three-system refrigerator, the double-compressor double-refrigerating system is used, the two refrigerating systems use different refrigerants, whether the second refrigerating system is started or not can be selected according to different refrigerating demands, and the advantages of different refrigerants are effectively utilized. And the second refrigeration system can realize corresponding refrigeration demands by adopting smaller compression ratio due to the overlapping effect, thereby effectively improving the refrigeration efficiency and reducing the noise in the refrigeration process. When the refrigerator operates in the normal cooling mode, the freezing chamber does not use R290 refrigerant for cooling any more, but the R290 cooling system is closed, and the R600a refrigerant is used for cooling only. In the common refrigeration mode, the single R600a refrigerant is different from the cascade refrigeration used in the prior art, and the single R600a refrigerant has higher refrigeration efficiency, is more energy-saving and has lower noise. When the refrigerator operates in a deep cooling mode, the freezing chamber needs to reach a lower cooling temperature, so that the freezing chamber of the refrigerator uses R290 refrigerant for cooling, and other compartments of the refrigerator still use R600a refrigerant for cooling. In the refrigerating process, the compressor has smaller compression ratio and higher efficiency compared with the single refrigerant used by other products, and the refrigerator has lower noise in the whole refrigerating process because the refrigerator compressor generates smaller vibration in the working process because of smaller compression ratio.
As one of the optional embodiments, the refrigeration pipeline comprises a first refrigeration pipeline, a second refrigeration pipeline and a third refrigeration pipeline;
the first refrigeration pipeline is connected with a first outlet of the electric valve, passes through a first capillary tube and the refrigeration evaporator and then is led into an air suction port of the first compressor;
the second refrigeration pipeline is connected with a second outlet of the electric valve, passes through a second capillary tube and the variable-temperature evaporator and then is led into an air suction port of the first compressor;
the third refrigeration pipeline is connected with a third outlet of the electric valve, passes through a third capillary tube and the freezing evaporator and then is led into an air suction port of the first compressor.
Specifically, in the embodiment of the invention, the electric valve is used for dividing the R600a refrigerant into A, B, C three paths, and respectively entering different refrigeration pipelines. The refrigerating pipeline comprises a first refrigerating pipeline A, a second refrigerating pipeline B and a third refrigerating pipeline C. The first refrigerating pipeline is connected with a first outlet of the electric valve, passes through the first capillary tube and the refrigerating evaporator and then is led into an air suction port of the first compressor. The second refrigerating pipeline is connected with a second outlet of the electric valve, passes through the second capillary tube and the variable-temperature evaporator and then is led into an air suction port of the first compressor. The third refrigerating pipeline is connected with a third outlet of the electric valve, passes through a third capillary tube and the freezing evaporator and then is led into an air suction port of the first compressor.
As one of the alternative embodiments, when the refrigerator is operated in the normal cooling mode, the first outlet, the second outlet and the third outlet of the electric valve are all in an open state;
when the refrigerator operates in a deep cooling mode, the first outlet and the second outlet of the electric valve are in an open state, and the third outlet is in a closed state.
Specifically, in the embodiment of the invention, when the refrigerator operates in the normal refrigeration mode, the first outlet, the second outlet and the third outlet of the electric valve are all in an open state. The refrigerant enters the first condenser from the exhaust port of the first compressor for cooling, the R600a refrigerant coming out from the outlet of the first condenser enters the inlet of the electric valve and is divided into A, B, C three paths, and the A, B, C three paths respectively pass through the capillary tube, enter the refrigeration evaporator, the variable-temperature evaporator and the freezing evaporator, respectively absorb heat by evaporation in different evaporators, cool different compartments, finally merge together and return to the air suction port on the right side of the compressor. When the refrigerator is operated in a deep cooling mode, the first outlet and the second outlet of the electric valve are in an open state, and the third outlet is in a closed state. The refrigerant enters the first condenser from the exhaust port of the first compressor for cooling, the R600a refrigerant coming out from the outlet of the first condenser enters the inlet of the electric valve and is divided into A, B paths, and the A, B paths respectively pass through the capillary tube, enter the refrigeration evaporator and the variable-temperature evaporator, respectively absorb heat by evaporation in different evaporators, cool different compartments, finally are converged together and return to the air suction port on the right side of the compressor. At this moment, the electric valve C is in a closed state, the second refrigerating system is started to refrigerate, the second refrigerating system adopts R290 refrigerant, the second condenser is positioned at the temperature-changing evaporator, the temperature-changing evaporator cools the temperature-changing valve C to lower temperature, at this moment, the R290 refrigerant is in a liquid state, and enters the second evaporator in the freezing chamber after passing through the left capillary tube to evaporate and absorb heat, and the temperature of the freezing chamber can be lowered to very low because the evaporating temperature of the R290 refrigerant is lower, so that the refrigerating cycle is circularly and reciprocally performed to refrigerate the refrigerator.
As one of the alternative embodiments, the outlet of the refrigeration evaporator, the outlet of the temperature-changing evaporator and the outlet of the freezing evaporator are all connected with the air suction port of the first compressor; and after passing through the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator, the R600a refrigerant is converged and then is introduced into the air suction port of the first compressor again.
Specifically, in the embodiment of the invention, the outlet of the cooling evaporator, the outlet of the temperature changing evaporator and the outlet of the freezing evaporator are all connected with the air suction port of the first compressor, and R600a refrigerant is converged together after passing through the refrigerating evaporator, the temperature changing evaporator and the freezing evaporator and is then introduced into the air suction port of the first compressor again.
As one of the alternative embodiments, the second condenser and the variable temperature evaporator are arranged opposite to each other, so that the second condenser and the variable temperature evaporator exchange heat with each other; the second evaporator and the freezing evaporator are oppositely arranged so that heat exchange is carried out between the second evaporator and the freezing evaporator; the R290 refrigerant is cooled by the variable temperature evaporator as it passes through the second condenser.
Specifically, in the embodiment of the invention, the second condenser and the variable temperature evaporator are arranged oppositely, so that the second condenser and the variable temperature evaporator exchange heat with each other, and when the R290 refrigerant passes through the second condenser, the variable temperature evaporator cools the R290 refrigerant, so that the R290 refrigerant can be cooled to a relatively low temperature, and at the moment, the R290 refrigerant is in a liquid state. The second evaporator and the freezing evaporator are arranged oppositely so that the second evaporator and the freezing evaporator exchange heat with each other.
The embodiment of the invention provides a refrigerator and a refrigeration control method thereof, wherein for a three-system refrigerator, a double-compressor double-refrigeration system is used, two refrigeration systems use different refrigerants, and whether a second refrigeration system is started or not can be selected according to different refrigeration demands, so that the advantages of different refrigerants are effectively utilized. And the second refrigeration system can realize corresponding refrigeration demands by adopting smaller compression ratio due to the overlapping effect, thereby effectively improving the refrigeration efficiency and reducing the noise in the refrigeration process. When the refrigerator operates in the normal cooling mode, the freezing chamber does not use R290 refrigerant for cooling any more, but the R290 cooling system is closed, and the R600a refrigerant is used for cooling only. In the common refrigeration mode, the single R600a refrigerant is different from the cascade refrigeration used in the prior art, and the single R600a refrigerant has higher refrigeration efficiency, is more energy-saving and has lower noise. When the refrigerator operates in a deep cooling mode, the freezing chamber needs to reach a lower cooling temperature, so that the freezing chamber of the refrigerator uses R290 refrigerant for cooling, and other compartments of the refrigerator still use R600a refrigerant for cooling. In the refrigerating process, the compressor has smaller compression ratio and higher efficiency compared with the single refrigerant used by other products, and the refrigerator has lower noise in the whole refrigerating process because the refrigerator compressor generates smaller vibration in the working process because of smaller compression ratio.
It should be noted that the system embodiments described above are merely illustrative, and that the units described as separate units may or may not be physically separate, and that units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the system embodiment of the present invention, the connection relationship between the modules represents that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (10)
1. A refrigerator, comprising:
the refrigerator comprises a refrigerator body, a plurality of compartments and a plurality of air inlets, wherein the refrigerator body is used as a supporting structure of the refrigerator;
The refrigerating system is arranged in the box body and comprises a first refrigerating system and a second refrigerating system;
the first refrigeration system comprises a first compressor, a first condenser, an electric valve, a refrigeration evaporator, a temperature-changing evaporator and a freezing evaporator; the second refrigeration system comprises a second compressor, a second condenser and a second evaporator; wherein, the first refrigeration system adopts R600a refrigerant, and the second refrigeration system adopts R290 refrigerant;
the exhaust port of the first compressor is connected with the inlet of the first condenser, the outlet of the first condenser is connected with the electric valve, and the electric valve is used for dividing the R600a refrigerant into three paths and respectively entering different refrigeration pipelines;
the exhaust port of the second compressor is connected with the inlet of the second condenser, the outlet of the second condenser is connected with the inlet of the second evaporator, and the outlet of the second evaporator is connected with the air suction port of the second compressor;
the controller is configured to control the first refrigeration system to operate when the refrigerator operates in a normal refrigeration mode; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant respectively enters the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator through the electric valve for refrigeration;
When the refrigerator operates in a deep cooling mode, the first refrigerating system and the second refrigerating system are controlled to operate simultaneously; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant enters the refrigeration evaporator and the temperature-changing evaporator respectively through the electric valve to perform refrigeration; and the R290 refrigerant sequentially passes through the second compressor and the second condenser and then enters the second evaporator to refrigerate the freezing chamber.
2. The refrigerator of claim 1, wherein the refrigeration lines comprise a first refrigeration line, a second refrigeration line, and a third refrigeration line;
the first refrigeration pipeline is connected with a first outlet of the electric valve, passes through a first capillary tube and the refrigeration evaporator and then is led into an air suction port of the first compressor;
the second refrigeration pipeline is connected with a second outlet of the electric valve, passes through a second capillary tube and the variable-temperature evaporator and then is led into an air suction port of the first compressor;
the third refrigeration pipeline is connected with a third outlet of the electric valve, passes through a third capillary tube and the freezing evaporator and then is led into an air suction port of the first compressor.
3. The refrigerator of claim 2, wherein the first outlet, the second outlet and the third outlet of the electric valve are all in an open state when the refrigerator is operated in a normal cooling mode;
when the refrigerator operates in a deep cooling mode, the first outlet and the second outlet of the electric valve are in an open state, and the third outlet is in a closed state.
4. The refrigerator as claimed in claim 3, wherein the outlet of the refrigerating evaporator, the outlet of the temperature varying evaporator and the outlet of the freezing evaporator are all connected to the suction port of the first compressor; and after passing through the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator, the R600a refrigerant is converged and then is introduced into the air suction port of the first compressor again.
5. The refrigerator as claimed in claim 4, wherein the second condenser and the variable temperature evaporator are disposed opposite to each other such that the second condenser and the variable temperature evaporator exchange heat with each other; the second evaporator and the freezing evaporator are oppositely arranged so that heat exchange is carried out between the second evaporator and the freezing evaporator; the R290 refrigerant is cooled by the variable temperature evaporator as it passes through the second condenser.
6. A refrigeration control method of a refrigerator, which is characterized in that the method is applied to the refrigerator comprising a refrigerator body and a refrigeration system; wherein, a plurality of compartments are arranged in the box body, and the refrigerating system comprises a first refrigerating system and a second refrigerating system; the first refrigeration system comprises a first compressor, a first condenser, an electric valve, a refrigeration evaporator, a temperature-changing evaporator and a freezing evaporator; the second refrigeration system comprises a second compressor, a second condenser and a second evaporator; wherein, the first refrigeration system adopts R600a refrigerant, and the second refrigeration system adopts R290 refrigerant; the electric valve is used for dividing the R600a refrigerant into three paths and respectively entering different refrigeration pipelines, and the refrigerator refrigeration control method comprises the following steps:
when the refrigerator operates in a common refrigeration mode, controlling the first refrigeration system to operate; after passing through the first compressor and the first condenser in sequence, the R600a refrigerant respectively enters the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator through the electric valve for refrigeration;
when the refrigerator operates in a deep cooling mode, the first refrigerating system and the second refrigerating system are controlled to operate simultaneously; after the R600a refrigerant passes through the first compressor and the first condenser in sequence, the refrigerating evaporator and the temperature-changing evaporator are respectively fed into the electric valve for refrigeration; and the R290 refrigerant sequentially passes through the second compressor and the second condenser and then enters the second evaporator to refrigerate the freezing chamber.
7. The refrigerator refrigeration control method as claimed in claim 6, wherein the refrigeration line includes a first refrigeration line, a second refrigeration line, and a third refrigeration line;
the first refrigeration pipeline is connected with a first outlet of the electric valve, passes through a first capillary tube and the refrigeration evaporator and then is led into an air suction port of the first compressor;
the second refrigeration pipeline is connected with a second outlet of the electric valve, passes through a second capillary tube and the variable-temperature evaporator and then is led into an air suction port of the first compressor;
the third refrigeration pipeline is connected with a third outlet of the electric valve, passes through a third capillary tube and the freezing evaporator and then is led into an air suction port of the first compressor.
8. The refrigerator cooling control method of claim 7, wherein the first outlet, the second outlet and the third outlet of the electric valve are all in an open state when the refrigerator is operated in a normal cooling mode;
when the refrigerator operates in a deep cooling mode, the first outlet and the second outlet of the electric valve are in an open state, and the third outlet is in a closed state.
9. The refrigeration control method of a refrigerator as claimed in claim 8, wherein an outlet of the refrigeration evaporator, an outlet of the temperature change evaporator and an outlet of the freezing evaporator are all connected with the suction port of the first compressor; and after passing through the refrigeration evaporator, the temperature-changing evaporator and the freezing evaporator, the R600a refrigerant is converged and then is introduced into the air suction port of the first compressor again.
10. The refrigeration control method of a refrigerator as claimed in claim 9, wherein the second condenser and the variable temperature evaporator are disposed opposite to each other so that heat exchange is performed between the second condenser and the variable temperature evaporator; the second evaporator and the freezing evaporator are oppositely arranged so that heat exchange is carried out between the second evaporator and the freezing evaporator; the R290 refrigerant is cooled by the variable temperature evaporator as it passes through the second condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310438844.3A CN116412604A (en) | 2023-04-21 | 2023-04-21 | Refrigerator and refrigeration control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310438844.3A CN116412604A (en) | 2023-04-21 | 2023-04-21 | Refrigerator and refrigeration control method thereof |
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| CN116412604A true CN116412604A (en) | 2023-07-11 |
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| CN202310438844.3A Pending CN116412604A (en) | 2023-04-21 | 2023-04-21 | Refrigerator and refrigeration control method thereof |
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| Country | Link |
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| CN (1) | CN116412604A (en) |
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2023
- 2023-04-21 CN CN202310438844.3A patent/CN116412604A/en active Pending
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