CN111473568A - Refrigerator with a door - Google Patents
Refrigerator with a door Download PDFInfo
- Publication number
- CN111473568A CN111473568A CN201910064959.4A CN201910064959A CN111473568A CN 111473568 A CN111473568 A CN 111473568A CN 201910064959 A CN201910064959 A CN 201910064959A CN 111473568 A CN111473568 A CN 111473568A
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- Prior art keywords
- evaporator
- refrigerator
- outlet
- refrigerant
- way valve
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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
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
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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
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21175—Temperatures of an evaporator of the refrigerant at the outlet of the evaporator
Abstract
The invention provides a refrigerator, which is provided with a first evaporator and a second evaporator which respectively provide cooling capacity for different storage compartments, and creatively provides that when the refrigerator enters a mode of independent refrigeration of the second evaporator, liquid refrigerants in the first evaporator are completely transferred through a flow path switching device, whether the refrigerants are completely transferred is judged according to the detection temperature at an outlet of the first evaporator, and when the refrigerants are completely transferred, the refrigerants are directly led to the second evaporator without passing through the first evaporator. The refrigerator can refrigerate only one storage chamber, avoids resource waste caused by the fact that another storage chamber does not need refrigeration, can ensure that liquid refrigerants cannot be remained in another evaporator when one evaporator refrigerates alone, ensures that the refrigerants in the evaporator which refrigerates alone are enough, cannot influence the refrigeration effect, and improves the utilization rate of the refrigerants.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator.
Background
Since the types of food stored in the refrigerator are different, the refrigerator generally has a plurality of storage compartments, such as a freezing compartment and a refrigerating compartment, but the user needs different storage compartments, for example, when the user only needs to use one storage compartment, a waste of resources is caused if the plurality of storage compartments are cooled at the same time.
Although there is a refrigerator with two evaporators, the two evaporators can respectively refrigerate different storage compartments, however, when one evaporator of the refrigerator refrigerates alone, a part of liquid refrigerant remains in the other evaporator, which results in insufficient refrigerant in the evaporator refrigerated alone and affects the refrigeration effect.
Disclosure of Invention
In view of the above, the present invention has been made to provide a refrigerator that overcomes or at least partially solves the above problems.
An object of the present invention is to provide a refrigerator which can improve the utilization rate of a refrigerant in a refrigerating process by refrigerant migration.
It is a further object of the present invention to increase the refrigerant migration rate of such a refrigerator.
The present invention provides a refrigerator, including: the box body at least defines a first storage chamber and a second storage chamber in the box body; the first evaporator is used for providing cold energy for the first storage chamber; the second evaporator is used for providing cold energy for the second storage chamber, and an inlet of the second evaporator is connected with an outlet of the first evaporator; a temperature measuring device for measuring a temperature at an outlet of the first evaporator; and a flow path switching device having a first branch outlet connected to an inlet of the first evaporator and a second branch outlet connected to an inlet of the second evaporator, respectively, and configured to open the first branch outlet to allow the refrigerant to flow toward the second evaporator after passing through the first evaporator when the refrigerator is started to separately cool the second storage compartment, and to close the first branch outlet and open the second branch outlet to allow the refrigerant to directly flow toward the second evaporator after a measured temperature of the temperature measuring device reaches a preset temperature threshold.
Alternatively, wherein the flow path switching device includes a three-way valve, an inlet end of the three-way valve is connected to an outlet end of a condenser of the refrigerator, a first split outlet of the three-way valve is connected to an inlet of the first evaporator, and a second split outlet of the three-way valve is connected to an inlet of the second evaporator.
Optionally, wherein the refrigerator further comprises: and one end of the electronic expansion valve is connected between the outlet end of the condenser and the air inlet end of the three-way valve, and the other end of the electronic expansion valve is connected between the first shunt outlet of the three-way valve and the inlet of the first evaporator.
Optionally, wherein the electronic expansion valve is configured to close when either of the first split outlet or the second split outlet is open.
Optionally, wherein the refrigerator further comprises: and the throttling device is arranged between the second branch outlet of the three-way valve and the inlet of the second evaporator.
Optionally, wherein the restriction comprises a capillary tube.
Optionally, when the refrigerator starts to refrigerate the first storage compartment and the second storage compartment simultaneously: the flow path switching device is also configured to close the air intake end; and the electronic expansion valve is configured to open.
Optionally, the method further includes: and one end of the dry filter is connected to the outlet end of the condenser, and the other end of the dry filter is connected between the electronic expansion valve and the air inlet end of the three-way valve.
Optionally, the first storage compartment is a refrigerating compartment, and the second storage compartment is a freezing compartment.
Optionally, wherein the refrigerator is further configured to: and starting the state of independently refrigerating the freezing chamber according to the operation instruction of a user or the storage states of the refrigerating chamber and the freezing chamber.
The invention provides a refrigerator, which is provided with a first evaporator and a second evaporator which respectively provide cooling capacity for different storage compartments, and creatively provides that when the refrigerator enters a mode of independent refrigeration of the second evaporator, liquid refrigerant in the first evaporator is transferred through a flow path switching device, whether the refrigerant is completely transferred is judged according to the detection temperature at an outlet of the first evaporator, and when the refrigerant is completely transferred, the refrigerant is directly led to the second evaporator without passing through the first evaporator. The refrigerator can refrigerate only one storage chamber, avoids resource waste caused by the fact that another storage chamber does not need refrigeration, can ensure that liquid refrigerants cannot be remained in another evaporator when one evaporator refrigerates alone, ensures that the refrigerants in the evaporator which refrigerates alone are enough, cannot influence the refrigeration effect, and improves the utilization rate of the refrigerants.
Furthermore, when the refrigerator of the present invention makes the liquid refrigerant in the first evaporator migrate through the flow path switching device, the refrigerant does not pass through the electronic expansion valve or other throttling device, so as to increase the migration speed of the refrigerant.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view of a refrigerator according to one embodiment of the present invention;
FIG. 2 is a schematic view of a refrigerant circulation system of a refrigerator according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating the flow of the refrigerant when the first storage compartment and the second storage compartment of the refrigerator cool simultaneously according to an embodiment of the present invention;
fig. 4 is a refrigerant flow diagram illustrating a refrigerant migration process of a refrigerator according to an embodiment of the present invention;
fig. 5 is a schematic flow diagram of a refrigerant for cooling the second storage compartment of the refrigerator according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic view of a refrigerator 10 according to an embodiment of the present invention, and the refrigerator 10 provided in this embodiment may generally include a box body 100, where the box body 100 at least defines a first storage compartment 110 and a second storage compartment 120, where the first storage compartment 110 may be a refrigerating compartment and the second storage compartment 120 may be a freezing compartment, and where the freezing compartment may be disposed below the refrigerating compartment.
As is well known to those skilled in the art, the temperature in the refrigerated compartment is generally between 2 ℃ and 10 ℃, preferably between 4 ℃ and 7 ℃. The temperature in the freezer compartment is typically in the range of-22 deg.C to-14 deg.C. The optimum storage temperatures for different types of items are different and the locations suitable for storage are different, for example, fruit and vegetable foods are suitable for storage in the cold storage compartment and meat foods are suitable for storage in the cold storage compartment.
Fig. 2 is a schematic diagram of a refrigerant circulation system of a refrigerator 10 according to an embodiment of the present invention, in which the refrigerator 10 of the embodiment may include a compressor 500, a condenser 600, a filter drier 900, an electronic expansion valve 700, a first evaporator 200, and a second evaporator 300, in which refrigerant pipelines are sequentially connected in series, an inlet of the second evaporator 300 is connected to an outlet of the first evaporator 200, and an outlet of the first evaporator 200 is further provided with a temperature measuring device 210 for detecting a temperature of a refrigerant at the outlet of the first evaporator 200.
The refrigerant is compressed into high-temperature and high-pressure refrigerant vapor in the compressor 500, condensed in the refrigerant vapor condenser 600 to become high-temperature and high-pressure liquid, passes through the drying filter 900, filters moisture and impurities in the refrigerant, enters the evaporator after throttling and pressure reduction, absorbs heat in the evaporator and evaporates, and then enters the compressor 500 again to complete the refrigeration cycle. Since the refrigeration principle of the refrigerator 10 is well known to those skilled in the art, it will not be described herein.
In addition, the refrigerator 10 of the present embodiment further includes a flow path switching device, which enables the refrigerator 10 to have a simultaneous cooling state in which the first evaporator 200 and the second evaporator 300 cool simultaneously, and an individual cooling state in which only the second evaporator 300 cools individually, in some embodiments of the present invention, the first evaporator 200 is used to provide cooling capacity to the refrigerating compartment, and the second evaporator 300 is used to provide cooling capacity to the freezing compartment. The refrigerator 10 can only refrigerate the freezing chamber, and resource waste caused by refrigeration of the refrigerating chamber is avoided. In some embodiments of the present invention, the refrigerator 10 may start the state of individually cooling the freezing compartment according to an operation instruction of a user, in other embodiments of the present invention, the refrigerator 10 may start the state of individually cooling the freezing compartment according to the storage states of the refrigerating compartment and the freezing compartment, for example, when the refrigerator 10 detects that only food is stored in the freezing compartment, the refrigerator 10 may start the state of individually cooling the freezing compartment by itself, and this setting manner of the refrigerator 10 may improve the intelligence of the refrigerator 10.
In other embodiments of the present invention, the refrigerator 10 further comprises a temperature-varying chamber (not shown), which may be disposed between the refrigerating compartment and the freezing compartment, and which may be optionally adjusted to-18 ℃ to 8 ℃, as is well known to those skilled in the art. And the temperature-varying chamber can be refrigerated by the cold energy provided by the second evaporator 300, so that when only the second evaporator 300 is in an independent refrigeration state of independent refrigeration, a user can also adjust the temperature of the temperature-varying chamber to make the temperature of the temperature-varying chamber suitable for refrigerated food to store a small amount of food suitable for refrigerated food, thereby avoiding resource waste caused by simultaneous refrigeration of the first evaporator 200 and the second evaporator 300, and the user can also adjust the temperature of the temperature-varying chamber to make the temperature of the temperature-varying chamber suitable for refrigerated food to increase the freezing storage space.
The flow path switching device of the present embodiment includes a three-way valve 400, an air inlet 410 of the three-way valve 400 is connected to an outlet end of a condenser 600 of the refrigerator 10, a first diverging port 420 of the three-way valve 400 is connected between an electronic expansion valve 700 and an inlet of a first evaporator 200, and a second diverging port 430 of the three-way valve 400 is connected to an inlet of a second evaporator 300 through a throttling device 800.
The refrigerator 10 further includes an electronic expansion valve 700 having one end connected between the outlet end of the condenser 600 and the air inlet end 410 of the three-way valve 400 and the other end connected between the first branch outlet 420 of the three-way valve 400 and the inlet of the first evaporator 200.
The refrigerator 10 is arranged in such a manner that the air inlet 410 of the three-way valve 400 is closed, when the electronic expansion valve 700 is opened, the refrigerant is throttled and depressurized by the electronic expansion valve 700, and then enters the first evaporator 200 and the second evaporator 300 respectively, so that the refrigerating chamber and the freezing chamber are cooled simultaneously; when the air inlet 410 and the first and second taps 420 and 430 of the three-way valve 400 are open and the electronic expansion valve 700 is closed, the refrigerant directly enters the first and second evaporators 200 and 300 without passing through the electronic expansion valve 70; when the air inlet 410 and the second outflow split port 430 of the three-way valve 400 are opened, the first outflow split port 420 is closed, and the electronic expansion valve 700 is closed, the refrigerant directly enters the throttle device 800 from the second outflow split port 430 of the three-way valve 40 without passing through the electronic expansion valve 700, and then enters the second evaporator 300, so that the freezing compartment is cooled separately. That is, the electronic expansion valve 700 is configured to be closed when either one of the first split outlet 420 or the second split outlet 430 of the three-way valve 400 is open.
In addition, one end of the filter drier 900 of the present embodiment is connected to the outlet end of the condenser 600, and the other end is connected between the electronic expansion valve 700 and the air inlet 410 of the three-way valve 400, so that the refrigerant can pass through the filter drier 900 in various open and closed states of the three-way valve 400 and the electronic expansion valve 700, and water and impurities in the refrigerant can be filtered.
In some embodiments of the present invention, the flow path switching device may also be solenoid valves respectively disposed at inlets of the first evaporator 200 and the second evaporator 300 to control the flow directions of the refrigerants in the different processes through opening and closing of the two solenoid valves, and in other embodiments of the present invention, the solenoid valve may also be disposed at the inlet of the first evaporator 200, and the throttling device 800 may also be an electronic expansion valve to implement the flow directions of the refrigerants in the different processes.
Fig. 3 is a schematic diagram of the flow of the refrigerant when the first storage compartment 110 and the second storage compartment 120 of the refrigerator 10 cool simultaneously according to an embodiment of the invention. When the first storage compartment 110 and the second storage compartment 120 of the refrigerator 10 cool simultaneously, the air inlet 410 of the three-way valve 400 is closed, the electronic expansion valve 700 is opened, and at least one of the first and second outlets 420 and 430 of the three-way valve 400 is closed, so as to ensure that the refrigerant does not pass through the three-way valve 400. The refrigerant flows in the direction shown by the arrow in the figure, the refrigerant is compressed into high-temperature and high-pressure refrigerant vapor in the compressor 500, the refrigerant vapor is condensed in the condenser 600 to generate heat into high-temperature and high-pressure liquid, the liquid passes through the drying filter 900, the moisture and the impurities in the refrigerant are filtered, the liquid passes through the electronic expansion valve 700 and is decompressed into low-temperature and low-pressure gas-liquid mixture, the mixture enters the first evaporator 200 and the second evaporator 300, the refrigerant absorbs heat in the first evaporator 200 and the second evaporator 300 and is evaporated, and then the mixture enters the compressor 500 again to complete the refrigeration cycle.
When the refrigerator 10 of the present embodiment enters the second storage compartment 120 to be cooled separately, the refrigerant in the first evaporator 200 is first transferred, so that the utilization rate of the refrigerant is increased when the refrigerator 10 cools separately in the second evaporator 300, thereby increasing the cooling effect. Fig. 4 is a refrigerant flow diagram illustrating a refrigerant migration process of the refrigerator 10 according to an embodiment of the invention. During the refrigerant transfer process of the refrigerator 10, the electronic expansion valve 700 is closed, the air inlet 410 and the first outflow split port 420 of the three-way valve 400 are opened, and the second outflow split port 430 is closed. The refrigerant flows in a direction indicated by an arrow in the drawing, is compressed into high-temperature and high-pressure refrigerant vapor in the compressor 500, is condensed and released into high-temperature and high-pressure liquid in the refrigerant vapor condenser 600, passes through the filter drier 900, filters moisture and impurities in the refrigerant, passes through the three-way valve 400, enters the first evaporator 200 and the second evaporator 300 from the first tap outlet 420 of the three-way valve 400, and enters the compressor 500 again.
In addition, a temperature measuring device 210 is further disposed at an outlet of the first evaporator 200 in this embodiment, the temperature measuring device 210 is configured to detect an outlet temperature of the first evaporator 200, the three-way valve 400 is adjusted according to the measured temperature of the temperature measuring device 210, when the measured temperature of the temperature measuring device 210 reaches a preset temperature threshold, it is described that all liquid refrigerants remaining in the first evaporator 200 have evaporated, all the refrigerants have migrated out of the first evaporator 200, at this time, the refrigerator 10 may enter a second storage compartment 120 individual refrigeration state, an air inlet end 410 and a second branch outlet 430 of the three-way valve 400 are opened, the first branch outlet 420 is closed, and the refrigerator 10 enters the second storage compartment 120 individual refrigeration state of the refrigerator 10 shown in fig. 5.
The temperature threshold may be actually determined for the refrigerator 10, and may be any value between-15 degrees celsius and 5 degrees celsius, for example, the temperature threshold may be-15 degrees celsius, 0 degrees celsius, 5 degrees celsius, or the like.
Fig. 5 is a schematic flow diagram of the refrigerant for cooling the second storage compartment 120 of the refrigerator 10 alone according to an embodiment of the invention. When the second storage compartment 120 of the refrigerator 10 is independently cooled, the electronic expansion valve 700 is closed, the air inlet 410 and the second outflow split port 430 of the three-way valve 400 are opened, and the first outflow split port 420 is closed. The refrigerant flows in the direction shown by the arrow in the figure, the refrigerant is compressed into high-temperature and high-pressure refrigerant vapor in the compressor 500, the refrigerant vapor is condensed in the condenser 600 to generate heat into high-temperature and high-pressure liquid, the liquid passes through the drying filter 900, the moisture and the impurities in the refrigerant are filtered, the liquid passes through the three-way valve 400, and enters the throttling device 800 from the second branch outlet 430 of the three-way valve 400, wherein the throttling device 800 can be a capillary tube, the refrigerant is decompressed into a low-temperature and low-pressure gas-liquid mixture in the throttling device 800 and enters the second evaporator 300, and the refrigerant absorbs heat in the second evaporator 300 and evaporates and then enters the compressor 500 again.
When the refrigerator 10 of this embodiment enters the first storage compartment 110 and the second storage compartment 120 to be cooled simultaneously, the electronic expansion valve 700 is opened, the air inlet end 410 of the three-way valve 400 is closed, and the refrigerant passes through the throttling and depressurizing effects of the electronic expansion valve 400 and then enters the first evaporator 200 and the second evaporator 300 to cool the first storage compartment 110 and the second storage compartment 120 separately, when the refrigerator 10 obtains an operation instruction of a user to start cooling the freezing compartment separately or starts cooling the freezing compartment separately according to the storage states of the cold storage compartment and the freezing compartment, the electronic expansion valve 700 is closed, the air inlet end 410 and the first branch outlet 420 of the three-way valve 400 are opened, the second branch outlet 430 is closed, so that the refrigerant enters the second evaporator 300 through the first evaporator 200 without throttling and depressurizing, so that the liquid refrigerant in the first evaporator 200 is migrated, and the temperature is measured by the temperature measuring device at the outlet of the first evaporator 200, whether all the liquid refrigerants in the first evaporator 200 are transferred is judged, if the measured temperature is greater than the temperature threshold value, all the liquid refrigerants are transferred, at this time, the electronic expansion valve 700 is closed, the air inlet end 410 and the second shunt outlet 430 of the three-way valve 400 are opened, the first shunt outlet 420 is closed, so that the refrigerants are throttled and depressurized through the throttling device 800 and enter the second evaporator 300 to independently refrigerate the second storage compartment 120, and if the refrigerator 10 needs to enter the first storage compartment 110 and the second storage compartment 120 again and are in a refrigerating state at the same time, the electronic expansion valve 700 is opened, and the air inlet end 410 of the three-way valve 400 is closed.
The refrigerator 10 of this embodiment can ensure that when the second evaporator 300 is used for cooling alone, no liquid refrigerant remains in the first evaporator 200, and it is ensured that the refrigerant in the second evaporator 300 is sufficient, so that the cooling effect is not affected, and the utilization rate of the refrigerant is improved. In addition, in the refrigerator 10 of the present invention, when the liquid refrigerant in the first evaporator 200 is transferred through the three-way valve 400, the refrigerant does not pass through the electronic expansion valve or other throttling device, so as to increase the transfer speed of the refrigerant.
The invention provides a refrigerator 10, the refrigerator 10 is provided with a first evaporator 200 and a second evaporator 300 which respectively provide cold energy for different storage compartments, creatively proposes that when the refrigerator 10 enters a state of independent refrigeration of the second evaporator 300, liquid refrigerant in the first evaporator 200 is transferred through a flow path switching device, whether the refrigerant is completely transferred is judged according to the detection temperature at the outlet of the first evaporator 200, and when the refrigerant is completely transferred, the refrigerant is directly led to the second evaporator 300 without passing through the first evaporator 200. The refrigerator 10 can refrigerate only one storage chamber, avoids resource waste caused by the fact that another storage chamber does not need refrigeration, can ensure that liquid refrigerants cannot be remained in another evaporator when one evaporator refrigerates alone, ensures that the refrigerants in the evaporator which refrigerates alone are enough, cannot influence the refrigeration effect, and improves the utilization rate of the refrigerants.
Further, in the refrigerator 10 of the present invention, when the liquid refrigerant in the first evaporator 200 is transferred by the flow path switching device, the refrigerant does not pass through the electronic expansion valve or other throttling device, so as to increase the transfer speed of the refrigerant.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A refrigerator, comprising:
the box body at least defines a first storage chamber and a second storage chamber in the box body;
the first evaporator is used for providing cold energy for the first storage chamber;
the second evaporator is used for providing cold energy for the second storage chamber, and an inlet of the second evaporator is connected with an outlet of the first evaporator;
a temperature measuring device for measuring a temperature at an outlet of the first evaporator;
and a flow path switching device having a first branch outlet connected to an inlet of the first evaporator and a second branch outlet connected to an inlet of the second evaporator, respectively, and configured to, when the refrigerator starts to separately cool the second storage compartment, open the first branch outlet to allow the refrigerant to flow to the second evaporator after passing through the first evaporator, and close the first branch outlet and open the second branch outlet to allow the refrigerant to directly flow to the second evaporator after a measured temperature of the temperature measuring device reaches a preset temperature threshold.
2. The refrigerator of claim 1, wherein
The flow path switching device includes a three-way valve, an inlet end of which is connected to an outlet end of a condenser of the refrigerator, a first branch outlet of which is connected to an inlet of the first evaporator, and a second branch outlet of which is connected to an inlet of the second evaporator.
3. The refrigerator of claim 2, further comprising:
and one end of the electronic expansion valve is connected between the outlet end of the condenser and the air inlet end of the three-way valve, and the other end of the electronic expansion valve is connected between the first shunt outlet of the three-way valve and the inlet of the first evaporator.
4. The refrigerator of claim 3, wherein
The electronic expansion valve is configured to close when either of the first split outlet or the second split outlet is open.
5. The refrigerator of claim 2, further comprising:
and the throttling device is arranged between the second branch outlet of the three-way valve and the inlet of the second evaporator.
6. The refrigerator of claim 5, wherein
The throttling means comprises a capillary tube.
7. The refrigerator of claim 3, wherein when the refrigerator initiates simultaneous cooling of the first and second storage compartments:
the three-way valve is also configured to close the air inlet end; and is
The electronic expansion valve is configured to open.
8. The refrigerator of claim 3, further comprising:
and one end of the dry filter is connected to the outlet end of the condenser, and the other end of the dry filter is connected between the electronic expansion valve and the air inlet end of the three-way valve.
9. The refrigerator of claim 1, wherein
The first storage chamber is a refrigerating chamber, and the second storage chamber is a freezing chamber.
10. The refrigerator of claim 9, wherein the refrigerator is further configured to:
and starting the state of independently refrigerating the freezing chamber according to an operation instruction of a user or the storage states of the refrigerating chamber and the freezing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064959.4A CN111473568A (en) | 2019-01-23 | 2019-01-23 | Refrigerator with a door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064959.4A CN111473568A (en) | 2019-01-23 | 2019-01-23 | Refrigerator with a door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111473568A true CN111473568A (en) | 2020-07-31 |
Family
ID=71743327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910064959.4A Pending CN111473568A (en) | 2019-01-23 | 2019-01-23 | Refrigerator with a door |
Country Status (1)
| Country | Link |
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| CN (1) | CN111473568A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091341A (en) * | 2021-03-29 | 2021-07-09 | 广东美芝制冷设备有限公司 | Double-temperature refrigerating system and refrigerating device |
Citations (8)
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