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CN110094922B - Refrigeration device - Google Patents

Refrigeration device Download PDF

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Publication number
CN110094922B
CN110094922B CN201910411122.2A CN201910411122A CN110094922B CN 110094922 B CN110094922 B CN 110094922B CN 201910411122 A CN201910411122 A CN 201910411122A CN 110094922 B CN110094922 B CN 110094922B
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CN
China
Prior art keywords
refrigerating chamber
evaporator
switching valve
chamber evaporator
temperature value
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CN201910411122.2A
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Chinese (zh)
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CN110094922A (en
Inventor
谢胜强
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Guangzhou Midea Hualing Refrigerator Co Ltd
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Guangzhou Midea Hualing Refrigerator Co Ltd
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Priority to CN201910411122.2A priority Critical patent/CN110094922B/en
Publication of CN110094922A publication Critical patent/CN110094922A/en
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Publication of CN110094922B publication Critical patent/CN110094922B/en
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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
    • 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
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • 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
    • 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
    • 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
    • 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
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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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)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention provides a refrigeration device, which comprises a compressor, a freezing chamber evaporator and a refrigerating chamber evaporator; the output end of the compressor is connected with the first end of the first switching valve, and the second end of the first switching valve is connected with the input end of the refrigerating chamber evaporator; the first output end of the refrigerating chamber evaporator is connected with the first input end of the freezing chamber evaporator, and the output end of the freezing chamber evaporator is connected with the input end of the compressor; and the control device is connected with the first switching valve and used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value are/is lower than the set refrigerating chamber temperature and the evaporator temperature value of the freezing chamber evaporator and/or the current freezing chamber temperature value are/is higher than the set freezing chamber temperature, controlling the starting of the compressor, controlling the conduction of the first end of the first switching valve and the second end of the first switching valve, and heating the refrigerating chamber by utilizing the refrigerant output by the compressor to avoid the defects caused by heating the heating wire.

Description

Refrigeration device
Technical Field
The invention relates to the field of refrigeration equipment, in particular to refrigeration equipment.
Background
As shown in fig. 1, a refrigerating chamber evaporator and a freezing chamber evaporator, a capillary tube, a condenser and a compressor in the single-system single-temperature control cold refrigerator are sequentially connected with each other, when the ambient temperature of the single-system single-temperature control cold refrigerator is low, specifically, when the ambient temperature is lower than the refrigerating set temperature of the refrigerating chamber, the refrigerating chamber does not start the compressor to refrigerate, and when the freezing chamber has a refrigerating requirement, the refrigerating requirement of the freezing chamber cannot respond because the temperature of the refrigerating chamber is lower than the limit of the refrigerating set temperature.
In the related technical scheme, the refrigerating chamber is heated by arranging the heating wire in the refrigerating chamber, however, a person skilled in the art finds that the heating wire is attached to the inner container of the refrigerating chamber, in the mass production process, if the attachment is not tight enough, drilling bubbles appear in the foaming process, the compensation effect is influenced, and energy loss and potential safety hazards exist in the heating process of the heating wire.
Therefore, how to overcome the problems existing in the related technical solutions is a problem which needs to be solved urgently at present.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, the invention proposes a refrigeration device.
In view of the above, according to one aspect of the present invention, there is provided a refrigerating apparatus including a compressor, a freezing compartment evaporator, and a refrigerating compartment evaporator; the output end of the compressor is connected with the first end of the first switching valve, and the second end of the first switching valve is connected with the input end of the refrigerating chamber evaporator; the first output end of the refrigerating chamber evaporator is connected with the first input end of the freezing chamber evaporator, and the output end of the freezing chamber evaporator is connected with the input end of the compressor; and the control device is connected with the first switching valve and is used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber are/is lower than the set temperature of the refrigerating chamber and the evaporator temperature value of the freezing chamber evaporator and/or the current temperature value of the freezing chamber are/is higher than the set temperature of the freezing chamber, controlling the compressor to start and controlling the first end of the first switching valve to be communicated with the second end of the first switching valve.
The refrigeration equipment provided by the invention comprises a compressor, a refrigerating chamber evaporator, a freezing chamber evaporator, a first switching valve and a control device, wherein the output end of the compressor is connected with the first end of the first switching valve; the first output end of the refrigerating chamber evaporator is connected with the first input end of the freezing chamber evaporator, the output end of the freezing chamber evaporator is connected with the input end of the compressor, the control device controls the compressor to start and controls the first end of the first switching valve to be communicated with the second end of the first switching valve when confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber are/is lower than the set temperature of the refrigerating chamber and higher than the set temperature of the freezing chamber, namely the refrigerating chamber where the refrigerating chamber evaporator is located has a refrigerating requirement and the refrigerating chamber where the refrigerating chamber evaporator is located does not have the refrigerating requirement, the high-temperature refrigerant output by the compressor flows through the refrigerating chamber evaporator to heat the refrigerating chamber evaporator, so that the evaporator temperature value and/or the current temperature value of the refrigerating chamber are/is higher than the set temperature of the refrigerating chamber, and then the refrigerant output by the compressor is utilized to heat the refrigerating chamber evaporator and/or the refrigerating chamber so as to avoid the defects brought by heating by the heating wire in the related technical scheme.
The refrigeration equipment according to the present invention may further have the following technical features:
in the above technical solution, further, a first capillary tube is further disposed between the first output end of the refrigerating chamber evaporator and the first input end of the freezing chamber evaporator, an input end of the first capillary tube is connected with the first output end of the refrigerating chamber evaporator, and an output end of the first capillary tube is connected with the first input end of the freezing chamber evaporator.
In this technical scheme, set up first capillary between the first input through the first output at the walk-in evaporimeter and the freezer evaporimeter, utilize first capillary to the throttle process of refrigerant to make the refrigerant after the throttle can refrigerate the freezer when flowing through the freezer evaporimeter, avoid causing the freezer temperature to rise at the in-process that carries out temperature compensation to the walk-in, and then cause the food of storage in the freezer to deteriorate, reduced the energy consumption simultaneously.
In any one of the above technical solutions, further, the refrigeration apparatus further includes: the input end of the condenser is connected with the third end of the first switching valve, and the output end of the condenser is connected with the output end of the freezing chamber evaporator; the control device is further configured to: and detecting and confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber is higher than the set temperature of the refrigerating chamber, and controlling the first end of the first switching valve to be communicated with the third end of the first switching valve.
In this technical scheme, through setting up the condenser, the input of condenser is connected with the third end of first change-over valve, and the output of condenser is connected with the output of freezer evaporimeter, and controlling means still is used for: the method comprises the steps of detecting and confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber are/is higher than the set temperature of the refrigerating chamber, and controlling the conduction of the first end of the first switching valve and the third end of the first switching valve so as to refrigerate the refrigerating chamber evaporator and the refrigerating chamber evaporator flowing through after the refrigerant output by the compressor is condensed by the condenser, thereby ensuring that refrigeration is carried out when the refrigerating chamber and the refrigerating chamber have refrigeration requirements, and reducing the possibility that stored food is deteriorated due to temperature change.
In any of the above technical solutions, further, a second switching valve is disposed between an output end of the second capillary tube, an output end of the freezing chamber evaporator, and an input end of the compressor, a first end of the second switching valve is connected to the output end of the second capillary tube, a second end of the second switching valve is connected to the output end of the freezing chamber evaporator, and a third end of the second switching valve is connected to the input end of the compressor; the control device is connected with the second switching valve and used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value of the refrigerating chamber is lower than the set refrigerating chamber temperature and the evaporator temperature value of the freezing chamber evaporator and/or the current freezing chamber temperature value of the refrigerating chamber is higher than the set freezing chamber temperature, controlling the second end of the second switching valve to be communicated with the third end of the second switching valve, or confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value are higher than the set refrigerating chamber temperature, and controlling the first end of the second switching valve to be communicated with the second end of the second switching valve.
In this technical scheme, through setting up the second diverter valve, the route that utilizes the flow path switching effect of second diverter valve to select to correspond switches on, avoids when refrigerating freezer evaporimeter and freezer evaporimeter, and the output of refrigerant heavy second capillary directly flows into to the input of compressor, causes the refrigerant directly to flow between compressor and the second capillary, can't refrigerate freezer evaporimeter and freezer evaporimeter, and then influences the refrigeration effect.
In any of the above technical solutions, further, a third switching valve is provided between the input end of the refrigerating chamber evaporator, the third end of the second switching valve, and the input end of the compressor, a first end of the third switching valve is connected to the input end of the refrigerating chamber evaporator, a second end of the third switching valve is connected to the third end of the second switching valve, and a third end of the third switching valve is connected to the input end of the compressor; the control device is connected with the third switching valve and used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber is lower than the set temperature of the refrigerating chamber and the evaporator temperature value of the freezing chamber evaporator and/or the current temperature value of the freezing chamber is higher than the set temperature of the freezing chamber, and controlling the second end of the third switching valve to be communicated with the third end of the third switching valve.
In the technical scheme, a third switching valve is arranged, a path of a refrigerant flowing into a compressor is controlled by utilizing a communication state between different ports in the third switching valve, specifically, when it is confirmed that an evaporator temperature value and/or a current temperature value of a refrigerating chamber evaporator is lower than a set temperature of the refrigerating chamber and an evaporator temperature value and/or a current temperature value of a freezing chamber evaporator is higher than a set temperature of the freezing chamber, a second end of the third switching valve is controlled to be communicated with a third end of the third switching valve, so that the refrigerant for temperature compensation of the refrigerating chamber evaporator flows into the compressor through the communicated path, the circulation of the refrigerant is ensured, the stability of the system is further ensured, and when refrigeration is carried out, a first end of the third switching valve is controlled to be communicated with the third end of the third switching valve, and the refrigerant circulation in the refrigeration process is further.
Optionally, when the second end of the third switching valve is communicated with the third end of the third switching valve in the third switching valve, the first end of the third switching valve may be communicated with the third end of the third switching valve, and when the amount of refrigerant output from the compressor is too large, a portion of the refrigerant may flow back to the compressor through a path formed by the first end of the third switching valve and the third end of the third switching valve, and a portion of the refrigerant may flow back to the compressor after passing through the refrigerating chamber evaporator and the freezing chamber evaporator, thereby ensuring the stability of the system.
In any one of the above technical solutions, further, the refrigeration apparatus further includes: and the first check valve is arranged between the second end of the first switching valve and the input end of the refrigerating chamber evaporator and used for limiting the refrigerant to flow from the first switching valve to the refrigerating chamber evaporator.
In the technical scheme, the first one-way valve is set between the second end of the first switching valve and the input end of the refrigerating chamber evaporator, so that the refrigerant backflow for temperature compensation of the refrigerating chamber evaporator is avoided, and the stability of the system is further influenced.
In any of the above technical solutions, further, the second output end of the refrigerating chamber evaporator is connected with the second input end of the freezing chamber evaporator.
In the technical scheme, the second output end of the refrigerating chamber evaporator is connected with the second input end of the freezing chamber evaporator, and when the refrigerating chamber evaporator is used for temperature compensation or refrigeration, the circulation path of a refrigerant is increased, so that the overall heat exchange efficiency is improved.
In any one of the above technical solutions, further, the refrigeration apparatus further includes: and the second one-way valve is arranged between the first output end of the refrigerating chamber evaporator and the input end of the first capillary tube and is used for limiting the refrigerant to flow from the refrigerating chamber evaporator to the first capillary tube.
In this technical scheme, through setting up the second single-phase valve, the flow direction of restriction refrigerant when freezing room evaporator and walk-in evaporimeter refrigerate, avoids the refrigerant under the throttle effect of first capillary, to walk-in evaporimeter input high pressure refrigerant, and then influences the refrigeration effect.
In any one of the above technical solutions, further, the refrigeration apparatus further includes: the auxiliary heating device is connected with the control device; the control device is also used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value of the refrigerating chamber is lower than the set refrigerating chamber temperature and the evaporator temperature value of the freezing chamber evaporator and/or the current freezing chamber temperature value of the refrigerating chamber is higher than the set freezing chamber temperature, controlling the auxiliary heating device to heat the refrigerating chamber evaporator or the refrigerating chamber, and controlling the auxiliary heating device to stop heating the refrigerating chamber evaporator or the refrigerating chamber when the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value of the refrigerating chamber is higher than the set refrigerating chamber temperature.
In the technical scheme, the first end of the first switching valve is controlled to be communicated with the second end of the first switching valve, the temperature of the refrigerating chamber evaporator is compensated by utilizing a refrigerant, and meanwhile, the temperature of the evaporator of the refrigerating chamber evaporator or the temperature of the refrigerating chamber is quickly increased by additionally adding the auxiliary heating device, so that the time for starting the refrigerating chamber for refrigerating is shortened, and the waiting time for the refrigerating chamber to execute refrigeration is shortened.
In any one of the above technical solutions, further, the refrigeration apparatus further includes: and the second capillary tube is arranged between the output end of the condenser and the output end of the freezing chamber evaporator.
In the technical scheme, the second capillary tube is arranged, the pressure value of the refrigerant output by the condenser is adjusted in the throttling process of the second capillary tube, and then the adjusted refrigerant enters the freezing chamber evaporator and the refrigerating chamber evaporator to perform refrigeration.
In any one of the above technical solutions, further, the refrigeration apparatus further includes: and the drying filter is arranged between the condenser and the second capillary tube, the input end of the drying filter is connected with the output end of the condenser, and the output end of the drying filter is connected with the input end of the second capillary tube.
In the technical scheme, the drying filter is arranged to filter impurities in the refrigerant, wherein the impurities include but are not limited to water and acid, so that the refrigerant in the refrigeration system is protected from being polluted by liquid and solid pollutants, and the stability of the system is ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 illustrates a schematic view of a refrigerator in a related art;
FIG. 2 shows a schematic block diagram of a refrigeration appliance of one embodiment of the present invention;
FIG. 3 shows a schematic structural diagram of a refrigeration unit of one embodiment of the present invention;
fig. 4 shows a schematic configuration of a refrigeration apparatus according to another embodiment of the present invention.
The correspondence between reference numerals and part names in fig. 3 and 4 is:
32 refrigerator evaporator, 34 freezer evaporator, 36 auxiliary heating device.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
In an embodiment of the present invention, as shown in fig. 2, a refrigeration apparatus includes: a compressor, a freezing chamber evaporator and a refrigerating chamber evaporator; the output end of the compressor is connected with the first end A of the first switching valve, and the second end B of the first switching valve is connected with the input end of the refrigerating chamber evaporator; the first output end of the refrigerating chamber evaporator is connected with the first input end of the freezing chamber evaporator, and the output end of the freezing chamber evaporator is connected with the input end of the compressor; and the control device is connected with the first switching valve and is used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber are/is lower than the set temperature of the refrigerating chamber and the evaporator temperature value of the freezing chamber evaporator and/or the current temperature value of the freezing chamber are/is higher than the set temperature of the freezing chamber, controlling the compressor to start and controlling the first end A of the first switching valve to be communicated with the second end B of the first switching valve.
In the embodiment, the refrigeration equipment comprises a compressor, a refrigerating chamber evaporator, a freezing chamber evaporator, a first switching valve and a control device, wherein the output end of the compressor is connected with the first end A of the first switching valve, and the second end B of the first switching valve is connected with the input end of the refrigerating chamber evaporator; the first output end of the refrigerating chamber evaporator is connected with the first input end of the freezing chamber evaporator, the output end of the freezing chamber evaporator is connected with the input end of the compressor, the control device controls the compressor to start and controls the first end A of the first switching valve to be communicated with the second end B of the first switching valve when confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber are lower than the set temperature of the refrigerating chamber and the evaporator temperature value of the freezing chamber evaporator and/or the current temperature value of the refrigerating chamber are higher than the set temperature of the refrigerating chamber, namely the refrigerating chamber where the refrigerating chamber evaporator is located has a refrigerating requirement and the refrigerating chamber where the refrigerating chamber evaporator is located does not have the refrigerating requirement, high-temperature refrigerant output by the compressor flows through the refrigerating chamber evaporator to heat the refrigerating chamber evaporator, so that the evaporator temperature value and/or the current temperature, and then the refrigerant output by the compressor is utilized to heat the refrigerating chamber evaporator and/or the refrigerating chamber so as to avoid the defects brought by heating by the heating wire in the related technical scheme.
In one embodiment of the present invention, as shown in fig. 2 and 3, a first capillary tube is further disposed between the first output end of the refrigerating compartment evaporator 32 and the first input end of the freezing compartment evaporator 34, an input end of the first capillary tube is connected to the first output end of the refrigerating compartment evaporator 32, and an output end of the first capillary tube is connected to the first input end of the freezing compartment evaporator 34.
In this embodiment, the first capillary tube is disposed between the first output end of the refrigerating chamber evaporator 32 and the first input end of the freezing chamber evaporator 34, so that the throttling process of the first capillary tube on the refrigerant is utilized to cool the freezing chamber when the throttled refrigerant flows through the freezing chamber evaporator 34, thereby avoiding the temperature of the freezing chamber from rising in the process of temperature compensation on the refrigerating chamber, further causing the deterioration of the food stored in the freezing chamber, and simultaneously reducing the energy consumption.
When the refrigerant flows through the refrigerating chamber evaporator 32, the refrigerating chamber evaporator 32 is used as a temporary condenser, and the refrigerant flowing through the first capillary tube flows into the freezing chamber evaporator 34, and at this time, the freezing chamber evaporator 34 is used as an evaporator.
In one embodiment of the present invention, as shown in fig. 2, the refrigerating apparatus further comprises: the input end of the condenser is connected with the third end C of the first switching valve, and the output end of the condenser is connected with the output end of the freezing chamber evaporator; the control device is further configured to: and detecting and confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber is higher than the set temperature of the refrigerating chamber, and controlling the first end A of the first switching valve to be communicated with the third end C of the first switching valve.
In this embodiment, by providing a condenser, an input end of the condenser is connected to the third end C of the first switching valve, an output end of the condenser is connected to an output end of the freezing chamber evaporator, and the control device is further configured to: the method comprises the steps of detecting and confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber are/is higher than the set temperature of the refrigerating chamber, and controlling the conduction of the first end A of the first switching valve and the third end C of the first switching valve so that a refrigerant output by the compressor is cooled for the refrigerating chamber evaporator and the refrigerating chamber evaporator flowing through after the condensation action of the condenser, thereby ensuring that the refrigerating chamber and the refrigerating chamber are cooled when refrigeration is required, and reducing the possibility that stored food is deteriorated due to temperature change.
In an embodiment of the present invention, as shown in fig. 2, a second switching valve is disposed between the output end of the second capillary tube, the output end of the freezing chamber evaporator, and the input end of the compressor, a first end D of the second switching valve is connected to the output end of the second capillary tube, a second end E of the second switching valve is connected to the output end of the freezing chamber evaporator, and a third end F of the second switching valve is connected to the input end of the compressor; the control device is connected with the second switching valve and used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value of the refrigerating chamber is lower than the set refrigerating chamber temperature and the evaporator temperature value of the freezing chamber evaporator and/or the current freezing chamber temperature value of the refrigerating chamber is higher than the set freezing chamber temperature, controlling the conduction of a second end E of the second switching valve and a third end F of the second switching valve, or confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value are higher than the set refrigerating chamber temperature, and controlling the conduction of a first end D of the second switching valve and a second end E of the second switching valve.
In this embodiment, through setting up the second diverter valve, utilize the flow path switching effect of second diverter valve to select corresponding route to switch on, avoid when refrigerating freezer evaporimeter and freezer evaporimeter, the refrigerant directly flows into to the input of compressor to the output of heavy second capillary of refrigerant, causes the refrigerant directly to flow from between compressor and the second capillary, can't refrigerate freezer evaporimeter and freezer evaporimeter, and then influence the refrigeration effect.
In one embodiment of the present invention, as shown in fig. 2, a third switching valve is provided between the input end of the refrigerating compartment evaporator, the third terminal F of the second switching valve and the input end of the compressor, the first terminal G of the third switching valve is connected to the input end of the refrigerating compartment evaporator, the second terminal H of the third switching valve is connected to the third terminal F of the second switching valve, and the third terminal I of the third switching valve is connected to the input end of the compressor; the control device is connected with the third switching valve and used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber is lower than the set temperature of the refrigerating chamber and the evaporator temperature value of the freezing chamber evaporator and/or the current temperature value of the freezing chamber is higher than the set temperature of the freezing chamber, and controlling the second end H of the third switching valve to be communicated with the third end I of the third switching valve.
In this embodiment, a third switching valve is provided, and a path of a refrigerant flowing into the compressor is controlled by using a communication state between different ports in the third switching valve, specifically, when it is confirmed that an evaporator temperature value and/or a current refrigerating room temperature value of the refrigerating room evaporator is lower than a refrigerating room set temperature and an evaporator temperature value and/or a current freezing room temperature value of the freezing room evaporator is higher than a freezing room set temperature, a second end H of the third switching valve is controlled to be communicated with a third end I of the third switching valve, so that the refrigerant performing temperature compensation on the refrigerating room evaporator flows into the compressor through the communicated path, circulation of the refrigerant is ensured, and stability of the system is further ensured.
Optionally, when the second end H of the third switching valve is communicated with the third end I of the third switching valve in the third switching valve, the first end G of the third switching valve may be communicated with the third end I of the third switching valve, and the opening degree of the first end G of the third switching valve and the third end I of the third switching valve is controlled, so that when the amount of refrigerant output by the compressor is too large, a part of the refrigerant flows back to the compressor through a path formed by the first end G of the third switching valve and the third end I of the third switching valve, and a part of the refrigerant flows back to the compressor after passing through the refrigerating chamber evaporator and the freezing chamber evaporator, thereby ensuring the stability of the system.
In one embodiment of the present invention, switching between temperature compensation and cooling of the refrigerating chamber is achieved by controlling the states of the first switching valve, the second switching valve, and the third switching valve.
In one embodiment of the present invention, as shown in fig. 2, the refrigerating apparatus further comprises: and the first one-way valve is arranged between the second end B of the first switching valve and the input end of the refrigerating chamber evaporator and is used for limiting the refrigerant to flow to the refrigerating chamber evaporator from the first switching valve.
In this embodiment, the first check valve is set between the second end B of the first switching valve and the input end of the refrigerating chamber evaporator, so that the refrigerant backflow for performing temperature compensation on the refrigerating chamber evaporator is avoided, and the stability of the system is further affected.
In one embodiment of the present invention, as shown in FIG. 2, the second output of the fresh food compartment evaporator is connected to the second input of the freezer compartment evaporator.
In this embodiment, the second output end of the refrigerating chamber evaporator is connected to the second input end of the freezing chamber evaporator, and when the refrigerating chamber evaporator performs temperature compensation or refrigeration, the flow path of the refrigerant is increased, thereby improving the overall heat exchange efficiency.
In one embodiment of the present invention, as shown in fig. 2, the refrigerating apparatus further comprises: and the second one-way valve is arranged between the first output end of the refrigerating chamber evaporator and the input end of the first capillary tube and is used for limiting the refrigerant to flow from the refrigerating chamber evaporator to the first capillary tube.
In the embodiment, the second single-phase valve is arranged to limit the flowing direction of the refrigerant, so that when the freezing chamber evaporator and the refrigerating chamber evaporator are used for refrigerating, the refrigerant is prevented from inputting high-pressure refrigerant to the refrigerating chamber evaporator under the throttling action of the first capillary tube, and further the refrigerating effect is prevented from being influenced.
In one embodiment of the present invention, as shown in fig. 4, the refrigerating apparatus further comprises: the auxiliary heating device 36, the auxiliary heating device 36 is connected with the control device; the control device is also used for confirming that the evaporator temperature value of the refrigerating chamber evaporator 32 and/or the current refrigerating chamber temperature value of the refrigerating chamber is lower than the set refrigerating chamber temperature and the evaporator temperature value of the freezing chamber evaporator 34 and/or the current freezing chamber temperature value is higher than the set freezing chamber temperature, controlling the auxiliary heating device 36 to heat the refrigerating chamber evaporator 32 or the refrigerating chamber, and controlling the auxiliary heating device 36 to stop heating the refrigerating chamber evaporator 32 or the refrigerating chamber when the evaporator temperature value of the refrigerating chamber evaporator 32 and/or the current refrigerating chamber temperature value is higher than the set refrigerating chamber temperature.
In this embodiment, the first end a of the first switching valve is controlled to be conducted with the second end B of the first switching valve, and the cooling medium is utilized to perform temperature compensation on the refrigerating chamber evaporator 32, and at the same time, the temperature compensation is performed by the additionally added auxiliary heating device 36, wherein the auxiliary heating device 36 can be heated by hot air, and further, high-temperature gas generated in the operation process of the compressor is transmitted into the refrigerating chamber through the heat dissipation pipeline, so that the evaporator temperature of the refrigerating chamber evaporator 32 or the refrigerating chamber temperature is rapidly increased, the time for reaching the refrigerating chamber starting refrigeration requirement is further reduced, and the waiting time for the refrigerating chamber to perform refrigeration is reduced.
In one embodiment of the present invention, as shown in fig. 2, the refrigerating apparatus further comprises: and the second capillary tube is arranged between the output end of the condenser and the output end of the freezing chamber evaporator.
In this embodiment, by providing the second capillary tube, the pressure value of the refrigerant output by the condenser is adjusted in the throttling process of the second capillary tube, so that the adjusted refrigerant enters the freezing chamber evaporator and the refrigerating chamber evaporator to perform refrigeration.
In one embodiment of the present invention, as shown in fig. 2, the refrigerating apparatus further comprises: and the drying filter is arranged between the condenser and the second capillary tube, the input end of the drying filter is connected with the output end of the condenser, and the output end of the drying filter is connected with the input end of the second capillary tube.
In this embodiment, the desiccant filter is disposed to filter impurities in the refrigerant, wherein the impurities include but are not limited to water and acid, so as to protect the refrigerant in the refrigeration system from contamination by liquid and solid contaminants, thereby ensuring the stability of the system.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A refrigerating apparatus, comprising a compressor, a freezing chamber evaporator and a refrigerating chamber evaporator, the refrigerating apparatus further comprising:
the output end of the compressor is connected with the first end of the first switching valve, and the second end of the first switching valve is connected with the input end of the refrigerating chamber evaporator;
the first output end of the refrigerating chamber evaporator is connected with the first input end of the freezing chamber evaporator, and the output end of the freezing chamber evaporator is connected with the input end of the compressor;
the input end of the first capillary tube is connected with the first output end of the refrigerating chamber evaporator, and the output end of the first capillary tube is connected with the first input end of the freezing chamber evaporator;
the input end of the condenser is connected with the third end of the first switching valve, and the output end of the condenser is connected with the output end of the freezing chamber evaporator;
a second switching valve is arranged among the output end of the condenser, the output end of the freezing chamber evaporator and the input end of the compressor, the first end of the second switching valve is connected with the output end of the condenser, the second end of the second switching valve is connected with the output end of the freezing chamber evaporator, and the third end of the second switching valve is connected with the input end of the compressor;
a third switching valve is arranged among the input end of the refrigerating chamber evaporator, the third end of the second switching valve and the input end of the compressor, the first end of the third switching valve is connected with the input end of the refrigerating chamber evaporator, the second end of the third switching valve is connected with the third end of the second switching valve, and the third end of the third switching valve is connected with the input end of the compressor;
the second output end of the refrigerating chamber evaporator is connected with the second input end of the freezing chamber evaporator;
the control device is connected with the first switching valve and is used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value are/is lower than the set refrigerating chamber temperature and the evaporator temperature value of the freezing chamber evaporator and/or the current freezing chamber temperature value are/is higher than the set freezing chamber temperature, controlling the compressor to be started, and controlling the first end of the first switching valve to be communicated with the second end of the first switching valve, the second end of the second switching valve to be communicated with the third end of the second switching valve and the second end of the third switching valve to be communicated with the third end of the third switching valve;
and confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value are/is higher than the set refrigerating chamber temperature, and controlling the first end of the second switching valve to be communicated with the second end of the second switching valve.
2. The refrigeration appliance according to claim 1,
the control device is further configured to: and detecting and confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value are/is higher than the set refrigerating chamber temperature, and controlling the conduction of the first end of the first switching valve and the third end of the first switching valve.
3. The refrigeration appliance according to claim 2, further comprising:
the first check valve is arranged between the second end of the first switching valve and the input end of the refrigerating chamber evaporator and used for limiting the refrigerant to flow to the refrigerating chamber evaporator from the first switching valve.
4. The refrigeration appliance according to claim 3, further comprising:
and the second one-way valve is arranged between the first output end of the refrigerating chamber evaporator and the input end of the first capillary tube and is used for limiting the refrigerant to flow from the refrigerating chamber evaporator to the first capillary tube.
5. The refrigeration apparatus as claimed in claim 1 or 2, further comprising:
the auxiliary heating device is connected with the control device;
the control device is also used for confirming that the evaporator temperature value of the refrigerating chamber evaporator and/or the current refrigerating chamber temperature value of the refrigerating chamber are/is lower than the set refrigerating chamber temperature and the evaporator temperature value of the freezing chamber evaporator and/or the current freezing chamber temperature value are/is higher than the set freezing chamber temperature, controlling the auxiliary heating device to heat the refrigerating chamber evaporator or the refrigerating chamber, and controlling the auxiliary heating device to heat the refrigerating chamber evaporator or the refrigerating chamber
And controlling the auxiliary heating device to stop heating the refrigerating chamber evaporator or the refrigerating chamber when the evaporator temperature value of the refrigerating chamber evaporator and/or the current temperature value of the refrigerating chamber are/is higher than the set temperature of the refrigerating chamber.
6. The refrigeration appliance according to claim 2, further comprising:
and the second capillary tube is arranged between the output end of the condenser and the output end of the freezing chamber evaporator.
7. The refrigeration appliance according to claim 6, further comprising:
the dry filter is arranged between the condenser and the second capillary tube, the input end of the dry filter is connected with the output end of the condenser, and the output end of the dry filter is connected with the input end of the second capillary tube.
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CN114646175A (en) * 2022-03-23 2022-06-21 创维电器股份有限公司 Direct-cooling type single-system double-temperature-control refrigeration method
CN115167559B (en) * 2022-06-23 2023-11-17 北京京仪自动化装备技术股份有限公司 Control method and control system of temperature control system and temperature control system

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