CN113074465A - Refrigeration cycle system, refrigeration equipment and control method thereof - Google Patents

Refrigeration cycle system, refrigeration equipment and control method thereof Download PDF

Info

Publication number
CN113074465A
CN113074465A CN202010007083.2A CN202010007083A CN113074465A CN 113074465 A CN113074465 A CN 113074465A CN 202010007083 A CN202010007083 A CN 202010007083A CN 113074465 A CN113074465 A CN 113074465A
Authority
CN
China
Prior art keywords
condenser
water
compressor
temperature value
cycle system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010007083.2A
Other languages
Chinese (zh)
Other versions
CN113074465B (en
Inventor
曹东强
刘建如
朱小兵
刘山山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Refrigerator Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Refrigerator Co Ltd
Priority to CN202010007083.2A priority Critical patent/CN113074465B/en
Publication of CN113074465A publication Critical patent/CN113074465A/en
Application granted granted Critical
Publication of CN113074465B publication Critical patent/CN113074465B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • 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
    • 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
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • 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
    • F25D23/00—General constructional features
    • F25D23/003—General constructional features for cooling refrigerating machinery
    • 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
    • F25B2600/02—Compressor control
    • 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

Landscapes

  • 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)
  • Removal Of Water From Condensation And Defrosting (AREA)
  • Defrosting Systems (AREA)

Abstract

The invention provides a refrigeration cycle system, refrigeration equipment and a control method thereof, wherein the refrigeration cycle system comprises a compressor, an evaporator, a first condenser, a second condenser, an evaporating dish and a water temperature sensor arranged in the evaporating dish, the inlet end of the first condenser is connected with the outlet end of the compressor, the outlet end of the first condenser is connected with the inlet end of the evaporator, the second condenser is arranged in the evaporating dish, the inlet end of the second condenser is connected with the outlet end of the compressor, and the outlet end of the second condenser is connected with the inlet end of the evaporator. When the temperature value that detects when temperature sensor is less than or equal to first preset temperature value, the play end of compressor switches on with the end that advances of second condenser to the defrosting water that utilizes the temperature to be lower carries out the water-cooling to the second condenser, improves heat exchange efficiency, and when the temperature value that detects when temperature sensor is greater than first preset temperature value, the play end of compressor then changes and switches on with the end that advances of first condenser, adopts air-cooled or other cooling methods to continue to cool off, has guaranteed refrigeration effect.

Description

Refrigeration cycle system, refrigeration equipment and control method thereof
Technical Field
The invention relates to the technical field of refrigeration and freezing storage, in particular to a refrigeration cycle system, refrigeration equipment and a control method thereof.
Background
The cycle efficiency of the refrigeration system is a key factor influencing the refrigerator, the refrigeration cycle efficiency can be improved by reducing the condensation pressure, and the condensation pressure is reduced by strengthening the heat dissipation of the condenser in the design of the general refrigeration system. The means for enhancing heat dissipation include increasing the length/heat dissipation area of the condenser, changing the type of the condenser (for example, changing a wire-tube condenser into a micro-channel condenser, etc.), increasing the air flow velocity around the condenser (increasing the rotational speed of the cooling fan, increasing the forced convection heat transfer coefficient), etc.
However, for the enhanced heat dissipation manner of the conventional refrigerator, the heat exchange efficiency of the condenser is limited, and how to improve the heat exchange efficiency of the condenser is an important problem to be solved by those skilled in the art.
Disclosure of Invention
An object of the present invention is to solve at least the above technical problems, and a refrigeration cycle system, a refrigeration apparatus, and a control method thereof.
A further object of the invention is to save energy and reduce consumption.
According to an aspect of the present invention, there is provided a refrigeration cycle system of a refrigeration apparatus, including:
a compressor;
an evaporator;
the evaporation pan is used for receiving defrosting water from the evaporator and discharged by a defrosting drain pipe of the refrigeration equipment;
the inlet end of the first condenser is connected with the outlet end of the compressor, and the outlet end of the first condenser is connected with the inlet end of the evaporator;
the second condenser is arranged in the evaporating dish and used for dissipating heat by using defrosting water in the evaporating dish, the inlet end of the second condenser is connected with the outlet end of the compressor, and the outlet end of the second condenser is connected with the inlet end of the evaporator;
the water temperature sensor is arranged in the evaporation pan and is configured to detect the temperature of the defrosting water in the area where the second condenser is located in the evaporation pan;
the refrigeration cycle system is configured to be when the temperature value that the temperature sensor detected is less than or equal to first preset temperature value, the play end of compressor with the end of advancing of second condenser switches on, works as the temperature value that the temperature sensor detected is greater than when first preset temperature value, the play end of compressor with the end of advancing of first condenser switches on.
Optionally, the refrigeration cycle system further includes:
the electric valve is arranged on a refrigerant pipeline between the outlet end of the compressor and the first condenser and between the outlet end of the compressor and the second condenser;
the electric valve is configured to be controlled to conduct the outlet end of the compressor and the inlet end of the second condenser when the temperature value detected by the water temperature sensor is smaller than or equal to the first preset temperature value, and to conduct the outlet end of the compressor and the inlet end of the first condenser when the temperature value detected by the water temperature sensor is larger than the first preset temperature value.
Optionally, the refrigeration cycle system further includes:
a first check valve disposed on the refrigerant pipeline between the outlet of the first condenser and the inlet of the evaporator, and configured to urge the refrigerant at the outlet of the first condenser to flow toward the inlet of the evaporator when the inlet of the first condenser is communicated with the outlet of the compressor;
and the second one-way valve is arranged on a refrigerant pipeline between the outlet end of the second condenser and the inlet end of the evaporator and is configured to promote the refrigerant at the outlet end of the second condenser to flow towards the inlet end direction of the evaporator when the inlet end of the second condenser is communicated with the outlet end of the compressor.
Optionally, the refrigeration cycle system further includes:
the water baffle is positioned in the evaporation pan and is arranged to divide the evaporation pan into a water evaporation area and a water cooling area, and the water cooling area is used for receiving defrosting water from the evaporator and discharged by the defrosting drain pipe;
the cover plate is positioned above the water cooling area and is arranged to be matched with the water baffle plate to seal the water cooling area, the second condenser is arranged in the water cooling area, and the water temperature sensor is arranged in the water cooling area and is configured to detect the temperature of the defrosting water in the water cooling area;
and the heating pipe is connected between the outlet end of the compressor and the first condenser and the second condenser and is arranged in the water evaporation area, and an overflow gap is defined between the cover plate and the water baffle plate so that when defrosting water in the water cooling area overflows into the water evaporation area, the heating pipe accelerates evaporation.
Optionally, the outer surface of the second condenser is coated with an anti-corrosion layer or deposited with an electrophoretic paint.
Optionally, the second condenser is a microchannel condenser.
Optionally, the refrigeration cycle system further includes:
a heat dissipation fan disposed adjacent to the first condenser and configured to accelerate airflow around the first condenser to accelerate heat dissipation of the first condenser.
Optionally, the refrigeration cycle system further includes:
dew removing pipe, drying filter and capillary, connect gradually first condenser the play end of second condenser with between the end of advancing of evaporimeter.
According to another aspect of the present invention, there is also provided a refrigerating apparatus including:
the refrigeration cycle system of any one of the preceding claims;
the refrigerator comprises a refrigerator body, a storage compartment and a storage box, wherein the refrigerator body is internally limited with the storage compartment;
a temperature sensor configured to detect a temperature inside the storage compartment;
the controller is configured to work as when the temperature value that refrigeration cycle system's temperature sensor detected is less than or equal to first preset temperature value, control switches on the play end of compressor with the end of advancing of second condenser, still configure to the temperature value that temperature sensor detected is greater than first preset temperature value just when the temperature value that temperature sensor detected is greater than the second preset temperature value, control switches on the play end of refrigeration cycle system's compressor and the end of advancing of first condenser.
According to still another aspect of the present invention, there is also provided a control method of a refrigeration apparatus, including:
detecting the temperature of the defrosting water in the area where the second condenser is located in the evaporating dish;
detecting the temperature in the storage room;
if the temperature value of the defrosting water is less than or equal to a first preset temperature value, the outlet end of the compressor and the inlet end of the second condenser are conducted;
and if the temperature value of the defrosting water is greater than a first preset temperature value and the temperature value in the storage chamber is greater than a second preset temperature value, conducting the outlet end of the compressor and the inlet end of the first condenser.
According to the refrigeration cycle system, the refrigeration equipment and the control method thereof, firstly, the second condenser is cooled by the defrosting water with lower temperature, so that the heat exchange efficiency is improved, and when the temperature of the defrosting water rises and the cooling efficiency of the second condenser is reduced, the refrigerant is adjusted to flow to the first condenser, and air cooling or other cooling modes are adopted for continuous cooling, so that the refrigeration effect is ensured.
Furthermore, the refrigeration cycle system, the refrigeration equipment and the control method thereof seal the second condenser in the water cooling area of the evaporating dish, can fully cool the second condenser by using the defrosting water, and can evaporate the defrosting water overflowing to the water evaporation area by using the refrigerant in the heating pipe, thereby playing the roles of saving energy and reducing consumption.
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 refrigeration cycle system according to an embodiment of the present invention;
fig. 2 is a schematic view of a second condenser of a refrigeration cycle system according to an embodiment of the present invention;
fig. 3 is a schematic view of a second condenser of a refrigeration cycle system according to another embodiment of the present invention;
FIG. 4 is a schematic view of a refrigeration unit according to one embodiment of the present invention; and
fig. 5 is a schematic diagram of a control method of a refrigeration apparatus according to an embodiment of the present invention.
Detailed Description
The present embodiment first provides a refrigeration cycle of the refrigeration apparatus 100, and the refrigeration cycle will be described in detail below with reference to fig. 1 to 3. The refrigeration device 100 may be a refrigerator, a freezer, or other devices having a refrigeration function and a freezing storage function.
Fig. 1 is a schematic view of a refrigeration cycle system according to an embodiment of the present invention, fig. 2 is a schematic view of a second condenser 104 of the refrigeration cycle system according to an embodiment of the present invention, and fig. 3 is a schematic view of the second condenser 104 of the refrigeration cycle system according to another embodiment of the present invention.
The refrigeration cycle system generally includes a compressor 101, a condenser and an evaporator 102, which are connected in sequence by refrigerant pipelines, the compressor 101 increases the pressure and temperature of refrigerant vapor by compression, and compresses the low-temperature and low-pressure refrigerant vapor to a high-temperature and high-pressure state; the condenser is a heat exchange device, and takes away heat of high-temperature and high-pressure refrigeration steam from the compressor 101 by using air, so that the high-temperature and high-pressure refrigeration steam is cooled and condensed into high-pressure refrigeration liquid; the evaporator 102 is located at the downstream of the condenser, the refrigerant liquid flowing into the evaporator 102 is evaporated and refrigerated in the evaporator 102 to realize the refrigeration process of the refrigerator, and the generated low-pressure vapor is sucked by the compressor 101 again, and the process is repeated and circulated continuously.
For the air-cooled refrigeration equipment 100, the evaporator 102 is prone to frost during the heat exchange process, and after the air-cooled refrigeration equipment 100 operates for a period of time, defrosting treatment is usually required, and defrosting water dropped from the evaporator 102 after defrosting is generally introduced into the evaporation pan 110 through the defrosting drain pipe 105, that is, the evaporation pan 110 is generally used for receiving the defrosting water from the evaporator 102 and discharged through the defrosting drain pipe 105 of the refrigeration equipment 100. In a conventional refrigeration device, the evaporation pan 110 is generally located near a condenser, and the defrosting water in the evaporation pan 110 is evaporated by heat dissipation of the condenser, and the condenser generally adopts an air cooling manner.
In the present embodiment, the condenser includes two types, one type is a first condenser 103, the other type is a second condenser 104, an input end of the first condenser 103 is connected to an output end of the compressor 101, an output end of the first condenser 103 is connected to an input end of the evaporator 102, an input end of the second condenser 104 is similarly connected to an output end of the compressor 101, and an output end of the second condenser 104 is connected to an input end of the evaporator 102, that is, the first condenser 103 and the second condenser 104 are connected in parallel. The second condenser 104 is disposed in the evaporation pan 110, and the second condenser 104 is cooled by water cooling by dissipating heat from the evaporation pan 110 by using the defrosting water. The forced convection heat transfer coefficient of the air cooling mode is about 20-40W/m2K, and the natural convection heat transfer coefficient of water is as high as 200W/m2More than K is 5-10 times of the heat exchange coefficient of the condenser in an air cooling mode, so thatThe heat exchange efficiency of the second condenser 104 using water cooling is higher.
Further, a water temperature sensor 106 configured to detect the temperature of the defrosting water in the region of the evaporation pan 110 where the second condenser 104 is located is further provided in the evaporation pan 110. The refrigeration cycle system may be configured such that when the temperature value detected by the water temperature sensor 106 is less than or equal to a first preset temperature value, the outlet of the compressor 101 is conducted with the inlet of the second condenser 104, and when the temperature value detected by the water temperature sensor 106 is greater than the first preset temperature value, the outlet of the compressor 101 is conducted with the inlet of the first condenser 103. That is, when the temperature of the defrosting water for cooling the second condenser 104 is low, the refrigerant of the compressor 101 flows to the second condenser 104, at this time, the second condenser 104 is water-cooled, the heat dissipation efficiency is high, and during the heat dissipation process, the temperature of the defrosting water gradually increases, which is not beneficial to the heat dissipation of the second condenser 104, at this time, the flow direction of the refrigerant can be changed, so that the refrigerant of the compressor 101 flows to the first condenser 103, and the flow direction of the refrigerant can be switched again until the defrosting water in the evaporation pan 110 is naturally cooled to the temperature which is reduced to the first preset temperature. Therefore, in the embodiment, the second condenser 104 is water-cooled by using the defrosting water with a lower temperature, so that the heat exchange efficiency of the second condenser 104 is improved, the condensing temperature and the condensing pressure are reduced, and the improvement of the refrigeration cycle efficiency of the refrigeration equipment 100 is facilitated; and through additionally arranging the first condenser 103 connected with the second condenser 104 in parallel, when the temperature of the defrosting water rises and the cooling efficiency of the second condenser 104 is reduced, the refrigerant flowing out of the compressor 101 is switched to be condensed by the first condenser 103, and the refrigerating effect of the refrigerating device 100 is ensured.
If the temperature of the external air is T2, the first preset temperature value may be T2 +. DELTA.T, where DELTA.T may be 3.
The first condenser 103 may be cooled by air or natural cooling, in this embodiment, to accelerate the heat dissipation of the first condenser 103, a heat dissipation fan 109 is disposed near the first condenser 103 and configured to accelerate the airflow around the first condenser 103 to cool the first condenser 103 quickly.
Due to the size limitation of the evaporation pan 110, the second condenser 104 can be a micro-channel condenser, so as to ensure the heat exchange area of the second condenser 104 while reducing the space occupied by the second condenser 104. As shown in fig. 2 and 3, as is well known to those skilled in the art, the microchannel condenser may refer to a condenser in which one condensation tube 1041 is bent to form a plurality of flat sections spaced in parallel with each other, and heat dissipation fins are formed between adjacent flat sections, and the adjacent flat sections and the heat dissipation fins therebetween define heat exchange medium flow channels. The condenser is high in heat exchange efficiency and small in occupied space.
Because second condenser 104 adopts the water-cooling mode, the design of second condenser 104 needs to consider the anticorrosive problem, and in this embodiment, the surface of second condenser 104 can be wrapped with anticorrosive coating 1042 or deposit and have the electrophoresis lacquer, and these two kinds of structures homoenergetic play better anticorrosive effect, avoid second condenser 104 to be corroded. The anticorrosive material may be polyethylene thermosol, a heat-shrinkable sleeve, and the like, as shown in fig. 2, a polyethylene thermosol sleeve may be sleeved on the periphery of the condensation pipe 1041 of the second condenser 104, as shown in fig. 3, and the entire outer surface of the second condenser 104 is coated with polyethylene thermosol.
The first condenser 103 may also be a micro-channel condenser or other various types of condensers, and the embodiment is not particularly limited.
Referring to fig. 1 again, as will be known to those skilled in the art, the refrigeration cycle system may further include a dew condensation removing pipe 120, a dry filter 130, a capillary tube 140, etc. which are sequentially connected between the output ends of the first condenser 103 and the second condenser 104 and the input end of the evaporator 102, that is, the compressor 101, the first condenser 103/the second condenser 104, the dew condensation removing pipe 120, the dry filter 130, and the capillary tube 140 are sequentially connected in the refrigerant flowing direction. The low-temperature low-pressure refrigerant gas is compressed into high-temperature high-pressure gas by the compressor 101, enters the first condenser 103/the second condenser 104, is condensed into a low-temperature high-pressure gas-liquid two-phase region, is continuously cooled in the dew-removing pipe 120 to form a certain supercooling degree, enters the capillary tube 140 through the drying filter 130, enters the evaporator 102 through the throttling of the capillary tube 140, absorbs heat of the storage compartment of the refrigeration equipment 100 by the low-temperature low-pressure refrigerant in the evaporator 102, and is sucked back to the compressor 101 to form a refrigeration cycle.
The switching of the refrigerant flow direction can be realized by an electric valve 108 or an electromagnetic valve. Specifically, the electric valve 108 may be disposed on a refrigerant pipeline between the outlet of the compressor 101 and the first condenser 103 and the second condenser 104, and the electric valve 108 is configured to controllably conduct the outlet of the compressor 101 and the inlet of the second condenser 104 when the temperature value detected by the water temperature sensor 106 is less than or equal to a first preset temperature value, and controllably conduct the outlet of the compressor 101 and the inlet of the first condenser 103 when the temperature value detected by the water temperature sensor 106 is greater than the first preset temperature value. The present embodiment enables automatic switching of the refrigerant flow direction when the conditions are satisfied by the electric valve 108 or the electromagnetic valve.
In some embodiments, the refrigeration cycle system may further include a first check valve 170 and a second check valve 180, the first check valve 170 is disposed on the refrigerant pipeline between the outlet of the first condenser 103 and the inlet of the evaporator 102, and configured to promote the refrigerant at the outlet of the first condenser 103 to flow toward the inlet of the evaporator 102 when the inlet of the first condenser 103 is communicated with the outlet of the compressor 101. The second check valve 180 is disposed on the refrigerant pipeline between the outlet of the second condenser 104 and the inlet of the evaporator 102, and configured to urge the refrigerant at the outlet of the second condenser 104 to flow toward the inlet of the evaporator 102 when the inlet of the second condenser 104 is communicated with the outlet of the compressor 101. In the present embodiment, the first check valve 170 and the second check valve 180 are provided to prevent the refrigerant from flowing in the reverse direction when the first condenser 103 is connected to the compressor 101 or when the second condenser 104 is connected to the compressor 101, so as to ensure that the refrigerant always flows in the direction of the evaporator 102.
In some embodiments, the refrigeration cycle system further includes a water guard 114, a cover plate 113, and a heating pipe 107. The water baffle 114 is positioned in the evaporation pan 110 and is configured to divide the evaporation pan 110 into a water evaporation area 111 and a water cooling area 112, the water cooling area 112 is used for receiving defrosting water discharged from the evaporator 102 through the defrosting water discharge pipe 105, the second condenser 104 is arranged in the water cooling area 112, the water temperature sensor 106 is arranged in the water cooling area 112 and is configured to detect the temperature of the defrosting water in the water cooling area 112, and the cover plate 113 is positioned above the water cooling area 112 and is configured to cooperate with the water baffle 114 to close the water cooling area 112, so that the defrosting water with lower temperature flows into the water cooling area 112 to cool the second condenser 104, and a part of water vapor is condensed into water drops on the cover plate 113 to reduce the evaporation of the defrosting water in the water cooling area 112, so that the second condenser 104 can be fully cooled by the defrosting water.
An overflow port 115 may be defined between the cover plate 113 and the water baffle plate 114, excess defrosting water in the water cooling area 112 may overflow into the water evaporation area 111, and a heating pipe 107 may be disposed in the water evaporation area 111 and connected between the outlet of the compressor 101 and the first condenser 103 and the second condenser 104, and refrigerant flowing out of the compressor 101 first enters the heating pipe 107, flows out of the heating pipe 107 and then enters the first condenser 103/the second condenser 104. Thus, the defrosting water overflowing to the water evaporation area 111 can be evaporated by using the refrigerant in the heating pipe 107, and the effects of energy conservation and consumption reduction are achieved.
Fig. 4 is a schematic diagram of a refrigeration unit 100 according to one embodiment of the present invention.
According to another aspect of the present invention, the present invention further provides a refrigeration device 100, as mentioned above, the refrigeration device 100 may be a device for refrigerating or freezing storage of a refrigerator, a freezer, or the like. The refrigeration apparatus 100 of the present embodiment includes the refrigeration cycle system of any of the foregoing embodiments, a tank (not shown), a temperature sensor 150, a controller 160, and the like. A storage compartment is defined in the box body, the temperature sensor 150 is configured to detect the temperature in the storage compartment, the controller 160 is configured to control the conduction between the outlet of the compressor 101 and the inlet of the second condenser 104 when the temperature value detected by the water temperature sensor 106 of the refrigeration cycle system is less than or equal to a first preset temperature value, and is further configured to control the conduction between the outlet of the compressor 101 and the inlet of the first condenser 103 of the refrigeration cycle system when the temperature value detected by the water temperature sensor 106 is greater than the first preset temperature value and the temperature value detected by the temperature sensor 150 is greater than a second preset temperature value.
That is, when the refrigeration cycle system is applied to the refrigeration apparatus 100, the temperature of the storage compartment needs to be reduced in consideration of the switching of the refrigerant in the refrigeration cycle system, when the refrigerator starts to perform refrigeration, the defrosting water flowing into the evaporation pan 110 does not exchange heat with the second condenser 104, the temperature is low, at this time, the refrigerant flows to the second condenser 104, the heat dissipation efficiency of the second condenser 104 is improved by using a water cooling method, the temperature of the defrosting water gradually increases along with the progress of heat dissipation, if the temperature in the storage compartment reaches a set shutdown point, the refrigerator is normally stopped, if the temperature in the storage compartment does not reach the shutdown point, and the temperature of the defrosting water increases to a certain degree at this time, which is not beneficial to the heat dissipation of the second condenser 104, the refrigerant needs to be switched to flow to the first condenser 103, and to perform heat dissipation by using an air cooling method, and, if so, until the storage compartment reaches the set shutdown point, therefore, the heat dissipation efficiency of the first condenser 103/the second condenser 104 is ensured, and supercooling of the storage compartment is avoided.
The controller 160 may control the flow direction of the refrigerant by controlling the electric valve 108/solenoid valve on the refrigerant pipeline between the outlet of the compressor 101 and the first and second condensers 103, 104.
Fig. 5 is a schematic diagram of a control method of the refrigeration apparatus 100 according to an embodiment of the present invention, and as shown in fig. 5, the embodiment further provides a control method of the refrigeration apparatus 100, including:
s102, detecting the temperature of the defrosting water in the area where the second condenser 104 is located in the evaporating dish 110;
s104, detecting the temperature in the storage room;
s106, if the temperature value of the defrosting water is less than or equal to a first preset temperature value, conducting the outlet end of the compressor 101 and the inlet end of the second condenser 104;
s108, if the temperature value of the defrosting water is greater than a first preset temperature value and the temperature value in the storage room is greater than a second preset temperature value, the outlet end of the compressor 101 and the inlet end of the first condenser 103 are conducted.
The control method of the embodiment controls the flow direction of the refrigerant according to the temperature of the defrosting water and the temperature of the storage compartment, thereby ensuring the heat dissipation efficiency of the first condenser 103/the second condenser 104 and improving the overall refrigeration efficiency of the refrigeration equipment 100.
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 refrigeration cycle system of a refrigeration apparatus, comprising:
a compressor;
an evaporator;
the evaporation pan is used for receiving defrosting water from the evaporator and discharged by a defrosting drain pipe of the refrigeration equipment;
the inlet end of the first condenser is connected with the outlet end of the compressor, and the outlet end of the first condenser is connected with the inlet end of the evaporator;
the second condenser is arranged in the evaporating dish and used for dissipating heat by using defrosting water in the evaporating dish, the inlet end of the second condenser is connected with the outlet end of the compressor, and the outlet end of the second condenser is connected with the inlet end of the evaporator;
the water temperature sensor is arranged in the evaporation pan and is configured to detect the temperature of the defrosting water in the area where the second condenser is located in the evaporation pan;
the refrigeration cycle system is configured to be when the temperature value that the temperature sensor detected is less than or equal to first preset temperature value, the play end of compressor with the end of advancing of second condenser switches on, works as the temperature value that the temperature sensor detected is greater than when first preset temperature value, the play end of compressor with the end of advancing of first condenser switches on.
2. The refrigeration cycle system according to claim 1, further comprising:
the electric valve is arranged on a refrigerant pipeline between the outlet end of the compressor and the first condenser and between the outlet end of the compressor and the second condenser;
the electric valve is configured to be controlled to conduct the outlet end of the compressor and the inlet end of the second condenser when the temperature value detected by the water temperature sensor is smaller than or equal to the first preset temperature value, and to conduct the outlet end of the compressor and the inlet end of the first condenser when the temperature value detected by the water temperature sensor is larger than the first preset temperature value.
3. The refrigeration cycle system according to claim 1, further comprising:
a first check valve disposed on the refrigerant pipeline between the outlet of the first condenser and the inlet of the evaporator, and configured to urge the refrigerant at the outlet of the first condenser to flow toward the inlet of the evaporator when the inlet of the first condenser is communicated with the outlet of the compressor;
and the second one-way valve is arranged on a refrigerant pipeline between the outlet end of the second condenser and the inlet end of the evaporator and is configured to promote the refrigerant at the outlet end of the second condenser to flow towards the inlet end direction of the evaporator when the inlet end of the second condenser is communicated with the outlet end of the compressor.
4. The refrigeration cycle system according to claim 1, further comprising:
the water baffle is positioned in the evaporation pan and is arranged to divide the evaporation pan into a water evaporation area and a water cooling area, and the water cooling area is used for receiving defrosting water from the evaporator and discharged by the defrosting drain pipe;
the cover plate is positioned above the water cooling area and is arranged to be matched with the water baffle plate to seal the water cooling area, the second condenser is arranged in the water cooling area, and the water temperature sensor is arranged in the water cooling area and is configured to detect the temperature of the defrosting water in the water cooling area;
and the heating pipe is connected between the outlet end of the compressor and the first condenser and the second condenser and is arranged in the water evaporation area, and an overflow gap is defined between the cover plate and the water baffle plate so that when defrosting water in the water cooling area overflows into the water evaporation area, the heating pipe accelerates evaporation.
5. The refrigeration cycle system according to claim 1, wherein
The outer surface of the second condenser is coated with an anticorrosive layer or deposited with electrophoretic paint.
6. The refrigeration cycle system according to claim 1, wherein
The second condenser is a microchannel condenser.
7. The refrigeration cycle system according to claim 1, further comprising:
a heat dissipation fan disposed adjacent to the first condenser and configured to accelerate airflow around the first condenser to accelerate heat dissipation of the first condenser.
8. The refrigeration cycle system according to claim 1, further comprising:
dew removing pipe, drying filter and capillary, connect gradually first condenser the play end of second condenser with between the end of advancing of evaporimeter.
9. A refrigeration appliance comprising:
a refrigeration cycle system as claimed in any one of claims 1 to 8;
the refrigerator comprises a refrigerator body, a storage compartment and a storage box, wherein the refrigerator body is internally limited with the storage compartment;
a temperature sensor configured to detect a temperature inside the storage compartment;
the controller is configured to work as when the temperature value that refrigeration cycle system's temperature sensor detected is less than or equal to first preset temperature value, control switches on the play end of compressor with the end of advancing of second condenser, still configure to the temperature value that temperature sensor detected is greater than first preset temperature value just when the temperature value that temperature sensor detected is greater than the second preset temperature value, control switches on the play end of refrigeration cycle system's compressor and the end of advancing of first condenser.
10. A control method of a refrigeration apparatus, which is the refrigeration apparatus of claim 9, comprising:
detecting the temperature of the defrosting water in the area where the second condenser is located in the evaporating dish;
detecting the temperature in the storage room;
if the temperature value of the defrosting water is less than or equal to a first preset temperature value, the outlet end of the compressor and the inlet end of the second condenser are conducted;
and if the temperature value of the defrosting water is greater than a first preset temperature value and the temperature value in the storage chamber is greater than a second preset temperature value, conducting the outlet end of the compressor and the inlet end of the first condenser.
CN202010007083.2A 2020-01-03 2020-01-03 Refrigeration cycle system, refrigeration equipment and control method thereof Active CN113074465B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010007083.2A CN113074465B (en) 2020-01-03 2020-01-03 Refrigeration cycle system, refrigeration equipment and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010007083.2A CN113074465B (en) 2020-01-03 2020-01-03 Refrigeration cycle system, refrigeration equipment and control method thereof

Publications (2)

Publication Number Publication Date
CN113074465A true CN113074465A (en) 2021-07-06
CN113074465B CN113074465B (en) 2024-08-13

Family

ID=76608725

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010007083.2A Active CN113074465B (en) 2020-01-03 2020-01-03 Refrigeration cycle system, refrigeration equipment and control method thereof

Country Status (1)

Country Link
CN (1) CN113074465B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR771546A (en) * 1933-07-08 1934-10-10 Automatic refrigeration unit with dry cold air conditioning with fully automatic defrost
CA2431739A1 (en) * 2002-06-12 2003-12-12 Tecumseh Products Company Modular refrigeration system for refrigeration appliance
CN1839288A (en) * 2003-08-26 2006-09-27 株式会社东芝 Refrigerator
JP2007198637A (en) * 2006-01-25 2007-08-09 Corona Corp Heat pump type water heater
CN203478673U (en) * 2012-10-05 2014-03-12 三菱电机株式会社 Heat pump device
CN211823237U (en) * 2020-01-03 2020-10-30 青岛海尔电冰箱有限公司 Refrigeration cycle system and refrigeration equipment with same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR771546A (en) * 1933-07-08 1934-10-10 Automatic refrigeration unit with dry cold air conditioning with fully automatic defrost
CA2431739A1 (en) * 2002-06-12 2003-12-12 Tecumseh Products Company Modular refrigeration system for refrigeration appliance
CN1839288A (en) * 2003-08-26 2006-09-27 株式会社东芝 Refrigerator
JP2007198637A (en) * 2006-01-25 2007-08-09 Corona Corp Heat pump type water heater
CN203478673U (en) * 2012-10-05 2014-03-12 三菱电机株式会社 Heat pump device
CN211823237U (en) * 2020-01-03 2020-10-30 青岛海尔电冰箱有限公司 Refrigeration cycle system and refrigeration equipment with same

Also Published As

Publication number Publication date
CN113074465B (en) 2024-08-13

Similar Documents

Publication Publication Date Title
WO2019129243A1 (en) Control method for improving evaporation capacity of refrigerator, and refrigerator
KR20180055833A (en) Air conditioner
CN112944770B (en) Refrigerator and refrigerating system thereof
CN104633988A (en) Air-cooled cold and hot water air conditioning system and control method thereof
US20120125036A1 (en) Refrigeration system
CN104061727A (en) Air source heat pump defrosting device based on fast evaporation of liquid drops in initial process of frosting
CN211823237U (en) Refrigeration cycle system and refrigeration equipment with same
CN208832629U (en) A kind of low-temperature cold water unit
CN216048068U (en) Direct-current variable-frequency heat pump reheating and cooling recovery type brand-new energy-saving combined air conditioning unit
US10345028B2 (en) Evaporators, methods for defrosting an evaporator, and cooling apparatuses using the evaporator
CN105135553A (en) Multiple-on-line system and method for enhancing supercooling degree of multiple-on-line system
CN101368777A (en) Liquid coolant defrosting and refrigeration system
CN113074465A (en) Refrigeration cycle system, refrigeration equipment and control method thereof
US10443913B2 (en) Refrigerator and method for controlling the same
CN212362308U (en) Evaporation cooling unit and refrigeration equipment
WO2018198220A1 (en) Refrigerating device
CN105571027B (en) Water chilling unit and control method thereof
CN209639338U (en) A kind of freezer water-cooled all-in-one machine
CN202885401U (en) Refrigerator water pan evaporating pipe
CN209744822U (en) Refrigerating system of refrigerator
CN108870818B (en) Water vapor energy heat pump system
JP2709890B2 (en) Cooling system
CN207649200U (en) Use the refrigerator of micro-channel heat exchanger evaporation condensed water
CN112327975A (en) Control method of efficient multistage drying system
CN220959105U (en) Refrigerator with a refrigerator body

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant