CN108375262B - Refrigerated cabinet - Google Patents
Refrigerated cabinet Download PDFInfo
- Publication number
- CN108375262B CN108375262B CN201810393621.9A CN201810393621A CN108375262B CN 108375262 B CN108375262 B CN 108375262B CN 201810393621 A CN201810393621 A CN 201810393621A CN 108375262 B CN108375262 B CN 108375262B
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- China
- Prior art keywords
- refrigerated
- cabinet
- refrigerating
- thermal insulation
- water tank
- Prior art date
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- 238000005057 refrigeration Methods 0.000 claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 239000003507 refrigerant Substances 0.000 claims abstract description 58
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 238000009413 insulation Methods 0.000 claims description 61
- 239000002826 coolant Substances 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 21
- 238000001704 evaporation Methods 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 13
- 238000012546 transfer Methods 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 10
- 230000008020 evaporation Effects 0.000 claims description 8
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 4
- 241000234295 Musa Species 0.000 description 3
- 235000021015 bananas Nutrition 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
-
- 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
- F25D19/04—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors with more than one refrigeration unit
-
- 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
- F25D23/02—Doors; Covers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to a refrigerated cabinet, and belongs to the technical field of refrigeration and preservation. A plurality of refrigerating compartments of the refrigerator body form at least one temperature regulating area; the at least one water tank type evaporator corresponds to the at least one temperature regulating area one by one, and the condenser, the water tank type evaporator and the compressor form a refrigerant circulation loop; the refrigerating medium conveying system corresponds to the water tank type evaporator, the liquid supply pipeline and the liquid return pipeline are respectively connected with the water tank type evaporator, the plurality of heat exchange branches are arranged between the liquid supply pipeline and the liquid return pipeline in parallel, one refrigerating compartment corresponds to one heat exchange branch, the water tank type evaporator, the liquid supply pipeline, the plurality of heat exchange branches and the liquid return pipeline form a refrigerating medium circulating loop, and the heat exchange device is positioned in the refrigerating compartment and is detachably connected with the cabinet body. This freezer sets up at least one district that adjusts temperature, realizes the cold-stored of the different temperatures of article according to the user demand, satisfies user's many temperature demands, simultaneously, guarantees the demand of article to humidity in the cold-stored process.
Description
Technical Field
The invention relates to the technical field of refrigeration and fresh-keeping, in particular to a refrigerated cabinet.
Background
The goods are refrigerated, frozen and preserved in a common way in daily production and living operations, and the requirements of different articles on temperature and humidity are different. The prior art ignores the problems, such as a refrigerator is generally provided with three modes of refrigeration, temperature regulation and freezing, namely, only three temperature setting options are adopted, and the types of articles in actual production, operation and life are various, and the demands are different; for another example, the electric business operates fresh, the heat preservation or refrigeration self-lifting cabinet is produced, the existing self-lifting cabinet basically adopts the buried evaporating coil in the inner wall of the compartment, the refrigerant evaporates in the coil, and then the articles in the cabinet are cooled through the conduction and radiation of the wall, so that basically only one temperature condition can be set for the self-lifting cabinet. Of course, in the above products, the humidity requirements of the article are essentially not addressed.
Disclosure of Invention
The invention aims to solve the problems, and provides a refrigerated cabinet which is provided with at least one temperature regulating area, realizes the refrigeration of different temperatures of articles according to the use requirements, meets the multi-temperature requirements of users, and simultaneously ensures the requirements of the articles on humidity in the refrigeration process, so that the problems are improved.
The invention is realized in the following way:
the embodiment of the invention provides a refrigerated cabinet, which comprises a cabinet body, a refrigerating system and a refrigerating medium conveying system;
the cabinet body is provided with a plurality of refrigerating compartments, and the refrigerating compartments form at least one temperature regulating area;
the refrigeration system comprises a condenser, a compressor and at least one refrigeration branch, wherein the condenser, the refrigeration branch and the compressor form a refrigerant circulation loop, the at least one refrigeration branch corresponds to the at least one temperature regulating area one by one, the refrigeration branch comprises a water tank type evaporator and an expansion valve, the water tank type evaporator comprises a refrigerant inlet, a refrigerant outlet, a secondary refrigerant inlet and a secondary refrigerant outlet, the expansion valve is positioned between the refrigerant inlet and the condenser, and the refrigerant outlet is connected with the compressor;
the utility model provides a refrigerating compartment, water tank formula evaporimeter, liquid supply pipeline, a plurality of heat transfer branch road and return liquid pipeline are corresponding, the water pump set up in on the liquid supply pipeline, the liquid supply pipeline with the refrigerating compartment exit linkage, return liquid pipeline with the refrigerating compartment entry linkage, a plurality of heat transfer branch road parallelly connected set up in between the liquid supply pipeline with return liquid pipeline, a heat transfer branch road is corresponding to the refrigerated compartment, the water tank formula evaporimeter liquid supply pipeline a plurality of heat transfer branch road with return liquid pipeline forms the refrigerating cycle return circuit, the water pump is used for providing the power that the refrigerating cycle was used for cooling the refrigerating cycle to the water pump, the heat transfer branch road is used for cooling the refrigerating compartment, heat transfer device is located in the refrigerating compartment just heat transfer device with the cabinet body detachable is connected.
In an alternative embodiment of the present invention, a plurality of temperature adjusting areas are provided, a plurality of refrigeration branches are provided, the plurality of refrigeration branches correspond to the plurality of temperature adjusting areas, the plurality of refrigeration branches are arranged in parallel between the condenser and the compressor, the liquid supply pipeline is connected with the secondary refrigerant outlet of the water tank type evaporator through a quick water stop joint, and the liquid return pipeline is connected with the secondary refrigerant inlet of the water tank type evaporator through a quick water stop joint.
In an alternative embodiment of the invention, the heat exchange device comprises a shell, a heat exchanger and a fan, wherein the shell is provided with a heat dissipation space, the heat exchanger is positioned in the heat dissipation space and is connected with the shell, the fan is connected with the shell and is correspondingly arranged with the heat exchanger, the heat exchanger is respectively connected with the liquid supply pipeline and the liquid return pipeline, the heat exchange device is respectively communicated with the liquid supply pipeline and the liquid return pipeline through quick water-stopping connectors, the fan is electrically connected with external control equipment, and the external control equipment is used for controlling the working state of the fan.
In an alternative embodiment of the present invention, the heat exchange branch further includes an electromagnetic valve, the electromagnetic valve is used for controlling the circulation of the secondary refrigerant in the heat exchange branch, the electromagnetic valve is electrically connected with an external control device, and the external control device is used for controlling the opening and closing states of the electromagnetic valve.
In an alternative embodiment of the invention, the heat exchanger comprises a condensate water tray, a drain pipe and an overflow pipe, wherein a humidifying component is arranged in the condensate water tray, the drain pipe is positioned at the bottom of the condensate water tray and is communicated with the condensate water tray, a normally closed electromagnetic valve is arranged on the drain pipe, the overflow pipe is positioned at the upper part of the condensate water tray, and two ends of the overflow pipe are respectively communicated with the condensate water tray and the drain pipe.
In an alternative embodiment of the present invention, the liquid supply pipeline is provided with a first electric valve and a diversion pipeline, the water pump is close to the water tank type evaporator relative to the first electric valve and the diversion pipeline, the diversion pipeline is connected in parallel with the first electric valve, the diversion pipeline comprises at least one second electric valve and a cold storage water tank, and the refrigerating medium enters the cold storage water tank through the second electric valve.
In an alternative embodiment of the invention, the refrigerated compartment is provided with a thermal door hinged to the cabinet and adapted to close the refrigerated compartment;
the cabinet body is provided with a plurality of insulation structure posts, the insulation structure post extends along vertical direction, the cross section of insulation structure post is trapezoidal, the thermal insulation door includes link and free end, the link with the cabinet body articulates, the free end be provided with insulation structure post complex hypotenuse, when the thermal insulation door is in the closed state, the hypotenuse with insulation structure post laminating.
In an alternative embodiment of the invention, the cabinet body is provided with at least one rotary supporting component, the rotary supporting component comprises two brackets which are oppositely arranged along the height direction of the cabinet body, one end of each bracket is connected with the cabinet body, the other end of each bracket extends out of the cabinet body, a rotary shaft is arranged between the two brackets, the heat preservation door is rotatably connected with the rotary shaft, the heat preservation door can rotate relative to the rotary shaft to realize opening or closing of the refrigerating compartment, and the distance from the axis of the rotary shaft to the cabinet body is larger than or equal to the thickness of the heat preservation door.
In an alternative embodiment of the present invention, the cross section of the insulation structure column is isosceles trapezoid, the plurality of refrigeration compartments includes a plurality of refrigeration units, the refrigeration units include two refrigeration compartments that are adjacently disposed along the length direction of the cabinet body, the insulation doors of the two refrigeration compartments are disposed opposite to each other, and the two refrigeration compartments share one insulation structure column.
In an alternative embodiment of the present invention, the two refrigeration compartments of the refrigeration unit are a first compartment and a second compartment, the heat-preserving door corresponding to the first compartment is a first heat-preserving door, the heat-preserving door corresponding to the second compartment is a second heat-preserving door, the first heat-preserving door and the second heat-preserving door of the adjacent refrigeration unit share one rotation axis, the first heat-preserving door and the second heat-preserving door of the adjacent refrigeration unit are rotatably connected with the rotation axis, the first heat-preserving door can rotate relative to the second heat-preserving door of the adjacent refrigeration unit, and when the first heat-preserving door is in a closed state and the second heat-preserving door of the adjacent refrigeration unit is in a closed state, the first heat-preserving door is attached to the second heat-preserving door of the adjacent refrigeration unit.
Compared with the prior art, the invention has the beneficial effects that:
the refrigerated cabinet is provided with at least one temperature regulating area, realizes the refrigeration of different temperatures of articles according to the use requirement, meets the multi-temperature requirement of a user, and simultaneously ensures the requirement of the articles on humidity in the refrigeration process; and the heat-insulating door is tightly matched with the cabinet body, so that the cooling load of the enclosure structure is reduced, and the energy is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a refrigerated cabinet according to an embodiment of the present invention;
FIG. 2 is a schematic view of the cabinet of FIG. 1;
FIG. 3 is a schematic view of the insulation column of FIG. 2;
fig. 4 is a schematic structural view of the refrigerating unit of fig. 2;
FIG. 5 is a schematic view of the heat exchange device of FIG. 1;
FIG. 6 is an enlarged schematic view of FIG. 1 at A;
FIG. 7 is a schematic diagram of a moisturizing system of the heat exchange device;
fig. 8 is an enlarged schematic view at B of fig. 1.
Icon: 100-a refrigerated cabinet; 1-a cabinet body; 11-a refrigerated compartment; 12-a temperature adjusting area; 13-a thermal insulation door; 131-connecting ends; 132-free end; 133-beveled edge; 14-a thermal insulation structural column; 15-a bracket; 16-rotating shaft; 17-a refrigeration unit; 171-a first compartment; 172-a second compartment; 2-a refrigeration system; 21-a condenser; 22-compressor; 23-a water tank type evaporator; 231-refrigerant inlet; 232-refrigerant outlet; 233-coolant inlet; 234-coolant outlet; 24-expansion valve; 3-a coolant delivery system; 31-a water pump; 32-a liquid supply pipeline; 321-a first electrically operated valve; 322-a second electrically operated valve; 323-cold storage water tank; 33-a liquid return pipeline; 34-a heat exchange device; 341-a housing; 342-heat exchanger; 343-a fan; 344-heat dissipation space; 345-condensate pan; 346-a drain pipe; 347-overflow pipe; 348—a humidification assembly; 349-normally closed solenoid valve; 35-electromagnetic valve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
Referring to fig. 1, a refrigerated cabinet 100 is provided in this embodiment, and includes a cabinet body 1, a refrigeration system 2, and a coolant delivery system 3.
As shown in fig. 1 to 8, in the present embodiment, the cabinet 1 includes a plurality of refrigerating compartments 11, and the plurality of refrigerating compartments 11 constitute at least one temperature adjustment zone 12; the refrigeration system 2 comprises a condenser 21, a compressor 22 and at least one refrigeration branch, wherein the condenser 21, the refrigeration branch and the compressor 22 form a refrigerant circulation loop, the at least one refrigeration branch corresponds to the at least one temperature regulating area 12 one by one, the refrigeration branch comprises a water tank type evaporator 23 and an expansion valve 24, the water tank type evaporator 23 comprises a refrigerant inlet 231 and a refrigerant outlet 232, the expansion valve 24 is arranged between the refrigerant inlet 231 and the condenser 21, the expansion valve 24 is used for controlling the on-off of the refrigeration branch, the refrigerant outlet 232 is connected with the compressor 22, the refrigerant can form a circulation loop among the condenser 21, the expansion valve 24, the water tank type evaporator 23 and the compressor 22, and the refrigerant circulation loop forms the refrigeration system 2; the coolant conveying system 3 corresponds to the water tank type evaporator 23, the coolant conveying system 3 comprises a water pump 31, a liquid supply pipeline 32, a plurality of heat exchange branches and a liquid return pipeline 33, the water tank type evaporator 23 further comprises a coolant inlet 233 and a coolant outlet 234, the water pump 31 is arranged on the liquid supply pipeline 32, the liquid supply pipeline 32 is connected with the coolant outlet 234, the liquid return pipeline 33 is connected with the coolant inlet 233, the plurality of heat exchange branches are arranged between the liquid supply pipeline 32 and the liquid return pipeline 33 in parallel, one refrigerating compartment 11 corresponds to one heat exchange branch, the water tank type evaporator 23 is used for cooling the coolant, a circulation loop is formed among the water tank type evaporator 23, the liquid supply pipeline 32, the plurality of heat exchange branches and the liquid return pipeline 33, the water pump 31 is used for providing power for circulating the coolant, the heat exchange branches comprise a heat exchange device 34, the heat exchange device 34 is arranged in the refrigerating compartment 11, and the heat exchange device 34 is detachably connected with the cabinet 1, and in the use process, if faults occur, the heat exchange device 34 can be replaced continuously. The refrigerator 100 can realize partition refrigeration, can set different temperature regulating areas 12 according to the demands of articles, can adjust the temperature at each interval according to the demands, realizes flexible refrigeration temperature control of the articles, and meets the different temperature demands of users.
In order to improve the energy efficiency ratio of the refrigerating system 2 (the higher the evaporation temperature of the refrigerating system 2 is, the higher the energy efficiency ratio is), so that the energy consumption is saved, and the refrigerating compartment 11 in the adjacent temperature range is set to be the same temperature regulating zone 12 according to the refrigerating requirements of different articles by adopting a temperature gradient to send the refrigerating medium according to the temperature range difference required by the articles through arranging a plurality of temperature regulating zones 12; a plurality of water tank evaporators 23 (refrigeration branches) are arranged in parallel, and different water tank evaporators 23 are arranged with different evaporating temperatures to meet the coolant temperature requirements of the corresponding temperature regulating zone 12. The zonal temperature regulation of the refrigeration distribution system is achieved by controlling the operating states of the different expansion valves 24.
The specific structure and positional relationship of the various components of the refrigerated merchandiser 100 to one another are described in detail below.
As shown in fig. 1, the cabinet 1 is provided with a plurality of refrigeration compartments 11, and the plurality of refrigeration compartments 11 are independently arranged, so that independent refrigeration of various objects can be realized. The plurality of refrigeration compartments 11 may be formed into at least one temperature regulating zone 12 according to the use requirement, and each temperature regulating zone 12 is provided with a refrigeration temperature zone.
As shown in fig. 2, the refrigerating compartment 11 is provided with a heat-preserving door 13, the heat-preserving door 13 is hinged with the cabinet body 1, and the heat-preserving door 13 is used for sealing the refrigerating compartment 11 to perform the heat-preserving function.
As shown in fig. 2 and 3, the cabinet body 1 is provided with a plurality of insulation structure columns 14, the insulation structure columns 14 extend in the vertical direction, the cross section of the insulation structure columns 14 is trapezoidal, and the width of the insulation structure columns 14 gradually decreases toward the other end from one end close to the cabinet body 1 in the width direction of the cabinet body 1. The thermal insulation door 13 comprises a connecting end 131 and a free end 132, the connecting end 131 is hinged with the cabinet body 1, the free end 132 is provided with a bevel edge 133 matched with the thermal insulation structure column 14, and the bevel edge 133 is attached to the trapezoid waist of the thermal insulation structure column 14, so that the refrigerating compartment 11 is sealed, and the refrigerating compartment 11 is isolated from the outside.
It should be noted that the opening of the refrigerated compartment 11 is located in a plane that lies along the length of the refrigerated cabinet 100.
In this embodiment, in order to facilitate the rotation of the thermal insulation door 13, the cabinet body 1 is provided with at least one rotation support assembly, the rotation support assembly includes two brackets 15 that are oppositely disposed along the height direction of the cabinet body 1, one end of each bracket 15 is connected with the cabinet body 1, the other end of each bracket 15 extends out of the cabinet body 1, a rotation shaft 16 is disposed between the two brackets 15, the thermal insulation door 13 is rotatably connected with the rotation shaft 16, and the thermal insulation door 13 can rotate relative to the rotation shaft 16 to realize the opening or closing of the refrigerating compartment 11. In order to ensure the sealing fit between the thermal insulation door 13 and the cabinet body 1 and avoid interference between the thermal insulation door 13 and the cabinet body 1 when opening and closing, the inventor has proved through a great deal of research experiments that when the rotating shaft 16 is arranged at the edge of one surface of the thermal insulation door 13 far away from the cabinet body 1, and when the distance from the axis of the rotating shaft 16 to the cabinet body 1 is greater than or equal to the thickness of the thermal insulation door 13, no matter whether the thermal insulation door 13 is opened or closed, the thermal insulation door 13 cannot interfere with the cabinet body 1 and cannot interfere with the adjacent thermal insulation door 13.
As an alternative of this embodiment, the cross section of the insulation structure column 14 is isosceles trapezoid, the lower bottom surface of the insulation structure column 14 is close to the cabinet body 1, the plurality of refrigeration compartments 11 includes a plurality of refrigeration units 17, the refrigeration units 17 include two refrigeration compartments 11 that are adjacently disposed along the length direction of the cabinet body 1, the insulation doors 13 of the two refrigeration compartments 11 are disposed opposite to each other, and the two refrigeration compartments 11 share one insulation structure column 14. Equivalently, the door opening directions of the two refrigeration compartments 11 are opposite, and it can be understood that one door is opened left and one door is opened right. The arrangement of the refrigerating unit 17 makes reasonable use of the heat-insulating structural columns 14 for the plurality of refrigerating compartments 11, so that the structure of the cabinet body 1 is more compact, and the situation that the heat-insulating structural columns 14 are arranged at the edge of the cabinet body 1 and the space of the cabinet body 1 is wasted can not occur.
As shown in fig. 4, the two refrigeration compartments 11 of the refrigeration unit 17 are a first compartment 171 and a second compartment 172, respectively, the heat-insulating door 13 corresponding to the first compartment 171 is the first heat-insulating door 13, and the heat-insulating door 13 corresponding to the second compartment 172 is the second heat-insulating door 13. When the cabinet 1 is provided with two or more refrigeration units 17 arranged side by side, the first heat-preserving door 13 and the second heat-preserving door 13 of the adjacent refrigeration unit 17 share one rotation shaft 16, the first heat-preserving door 13 and the second heat-preserving door 13 of the adjacent refrigeration unit 17 are respectively rotatably connected with the rotation shaft 16, and the first heat-preserving door 13 can rotate relative to the second heat-preserving door 13 of the adjacent refrigeration unit 17. When the first heat preservation door 13 is in a closed state and the second heat preservation door 13 of the adjacent refrigerating unit 17 is in a closed state, the first heat preservation door 13 is attached to the second heat preservation door 13 of the adjacent refrigerating unit 17. The position of the rotating shaft 16 ensures that the joint of the first heat preservation door 13 and the second heat preservation door 13 of the adjacent refrigerating unit 17 is in sealing fit, and the first heat preservation door 13 is not interfered with the second heat preservation door 13 of the adjacent refrigerating unit 17 when rotating relative to the second heat preservation door 13.
The design advantages of the heat preservation door 13 and the cabinet body 1 are as follows: the two heat-insulating doors 13 hinged to the same side can enable the edges of the two heat-insulating doors 13 to be close when the two heat-insulating doors 13 are closed, no gap exists between the two heat-insulating doors 13, an air cold bridge is not generated, the heat-insulating effect is better, and when any one heat-insulating door 13 is opened, the adjacent heat-insulating door 13 is not influenced; two adjacent thermal insulation doors 13 of closing direction homonymy, thermal insulation door 13 are when closing, and hypotenuse 133 is close with the structural column, and thermal insulation door 13 is close with cabinet body 1, and no gap does not have the air cold bridge to produce, and the heat preservation effect is better, and thermal insulation door 13 is when opening arbitrary angle all not contradicted with adjacent thermal insulation door 13 and thermal insulation structure post 14.
As shown in fig. 1, the refrigeration system 2 provides cooling conditions for the cabinet 1, and the refrigeration system 2 includes a condenser 21, a compressor 22 and refrigeration branches, the number of which corresponds to the number of the temperature adjusting areas 12. Equivalently, each temperature adjustment region 12 is provided with one refrigeration branch, and the plurality of temperature adjustment regions 12 are provided with a plurality of refrigeration branches.
In the present embodiment, the condenser 21 and the compressor 22 are both of the prior art, and reference is made to the existing working principle. The refrigerating branch circuit comprises a water tank type evaporator 23 and an expansion valve 24, the water tank type evaporator 23 comprises a refrigerant inlet 231 and a refrigerant outlet 232, the expansion valve 24 is connected with the refrigerant inlet 231, the refrigerant enters the water tank type evaporator 23 through the expansion valve 24, and the opening and closing of the expansion valve 24 controls the on-off of the refrigerating branch circuit; the refrigerant outlet 232 is connected to the compressor 22. The refrigerant circulates among the condenser 21, the refrigeration branch and the compressor 22, thereby constituting the refrigeration system 2, and realizing refrigeration. The user can control the operating state of the evaporator and the flow rate of the refrigerant by controlling the expansion valve 24, thereby achieving the temperature adjustment of the evaporator. The condenser 21, the compressor 22, the expansion valve 24, the water tank type evaporator 23, corresponding pipelines and accessories form a refrigeration host, and the refrigeration host can be integrated with the cabinet body 1 or arranged outside the cabinet body 1 to form a single unit.
As shown in fig. 1, the coolant delivery system 3 corresponds to a water tank evaporator 23, and the coolant delivery system 3 distributes a source of cooling to the refrigerated compartment 11 of the conditioning zone 12. The coolant conveying system 3 includes a water pump 31, a liquid supply pipeline 32, a plurality of heat exchange branches and a liquid return pipeline 33, the water pump 31 is arranged on the liquid supply pipeline 32 (in practical use, the water tank type evaporator 23 can also be arranged on the liquid return pipeline 33), the water tank type evaporator 23 also includes a coolant outlet 234 and a coolant inlet 233, the liquid supply pipeline 32 is connected with the coolant outlet 234, the liquid return pipeline 33 is connected with the coolant inlet 233, the plurality of heat exchange branches are arranged between the liquid supply pipeline 32 and the liquid return pipeline 33 in parallel, and the water tank type evaporator 23 is a connecting bridge of the coolant conveying system 3 and the refrigerating system 2 and realizes heat exchange of the coolant and the refrigerant. All the components of the refrigerating system 2 are connected through copper pipes, high-pressure refrigerant is filled in the copper pipes, the maintenance is inconvenient, and a general refrigerating host is an integral body and is connected with the refrigerating medium conveying system 3 through a quick water-stopping joint. Correspondingly, the liquid supply pipeline 32 is connected with the secondary refrigerant outlet 234 through a quick water stop joint, and the liquid return pipeline 33 is connected with the secondary refrigerant inlet 233 through a quick water stop joint. In this way, the refrigerating host fails, the whole refrigerating host is quickly disassembled, the non-failure refrigerating host is quickly replaced, and uninterrupted cooling of the refrigerated cabinet 100 can be realized.
The water tank type evaporator 23, the liquid supply pipeline 32, the plurality of heat exchange branches and the liquid return pipeline 33 form a secondary refrigerant circulation loop, the water pump 31 is used for providing power for secondary refrigerant circulation, and the water tank type evaporator 23 is used for cooling the secondary refrigerant. One refrigerating compartment 11 corresponds to one heat exchange branch, and the refrigerating medium circulates in the heat exchange branch to take away the heat of the refrigerating compartment 11, so that the refrigerating compartment 11 is cooled and refrigerated. Each of the refrigeration compartments 11 is a separate heat exchange branch comprising a heat exchange device 34, the heat exchange device 34 being located within the refrigeration compartment 11 and the heat exchange device 34 being detachably connected to the cabinet 1. When the refrigerating compartment 11 fails, the heat exchange device 34 in the refrigerating compartment 11 can be disassembled and replaced, and other refrigerating compartments 11 are refrigerated independently, so that uninterrupted cooling of the cabinet 1 is realized.
In this embodiment, the coolant may be of different kinds depending on the cooling temperature (evaporation temperature of the evaporator), and when the cooling temperature is 0 ℃ or higher, the coolant is water; when the cooling temperature is below 0 ℃, a low freezing point liquid, such as an aqueous glycol solution, is used. The secondary refrigerant can also be in other forms, and a user can select different secondary refrigerants according to actual conditions.
The heat exchange device 34 is respectively communicated with the liquid supply pipeline 32 and the liquid return pipeline 33 through quick water-stopping connectors (not shown), when the heat exchange device 34 fails, only the failed heat exchange branch is needed to be disconnected, the heat exchange device 34 is quickly disassembled and replaced through the quick water-stopping connectors, and other refrigeration compartments 11 are normally refrigerated, so that uninterrupted refrigeration of the cabinet body 1 is realized. The quick water stop joint is in the prior art, can realize quick connection and disassembly of the pipeline, and the pipeline is automatically turned off at a separation part when the pipeline is disassembled, and the pipeline is automatically communicated when the pipeline is connected and folded.
As shown in fig. 5, the heat exchanging device 34 includes a casing 341, a heat exchanger 342 and a fan 343, the casing 341 is detachably connected with a wall plate of the refrigeration compartment 11, the casing 341 is provided with a heat dissipation space 344, the heat exchanger 342 is located in the heat dissipation space 344, the heat exchanger 342 is connected with the casing 341, the fan 343 is connected with the casing 341 and the fan 343 is disposed corresponding to the heat exchanger 342, and the heat exchanger 342 is connected with the liquid supply pipeline 32 and the liquid return pipeline 33, respectively. The heat exchanger 342 is of the prior art, and the embodiment will not be described in detail, the heat exchanger 342 may be of different structural forms, and the user may choose according to the actual situation. The coolant circulates through the interior of the heat exchanger 342 to remove heat from the cooled articles, and the fan 343 is operated to increase the rate of heat removal by the coolant to thereby regulate the temperature of the refrigerated compartment 11 relative to the heat transfer device 34. The fan 343 is connected with an external control device, which is a prior art, and the external control device is used for controlling the working state of the fan 343. The external control device controls the operating state of the blower 343 according to the temperature demand of the refrigerating compartment 11 to achieve fine-tuning of the temperature of the refrigerating compartment 11.
As shown in fig. 6, the heat exchange branch further includes an electromagnetic valve 35, where the electromagnetic valve 35 may be located at a front end of the heat exchange device 34 (an inlet end of the secondary refrigerant) or may be located at a rear end of the heat exchange device 34 (an outlet end of the secondary refrigerant), and the electromagnetic valve 35 is connected to an external control device, and controls the opening and closing of the electromagnetic valve 35 according to a signal of the external control device, so as to implement on-off of the heat exchange branch, and the on-off of the heat exchange branch can implement temperature regulation of the refrigerating compartment 11.
As shown in fig. 7, the heat exchanger 342 includes a condensate water tray 345, a drain pipe 346, and an overflow pipe 347, a humidifying unit 348 is provided inside the condensate water tray 345, the drain pipe 346 is located at the bottom of the condensate water tray 345, and the drain pipe 346 communicates with the condensate water tray 345, a normally closed solenoid valve 349 is provided on the drain pipe 346, the overflow pipe 347 is located at the upper portion of the condensate water tray 345, both ends of the overflow pipe 347 communicate with the condensate water tray 345 and the drain pipe 346, respectively, and the overflow pipe 347 is connected in parallel with the normally closed solenoid valve 349. In this embodiment, the humidifying component 348 is an ultrasonic humidifying module, which humidifies the air in the refrigerating compartment 11, and when the humidity is lower than the set condition, the humidifying component 348 humidifies the air, and the fan 343 can assist the air to circulate rapidly; when the humidity reaches the set condition, the normally closed solenoid valve 349 is opened to rapidly empty the residual water in the condensate water tray 345. The humidifying component 348 can be other humidifying structure, and the user can select according to the actual situation. A humidifying component 348 is arranged in the condensate water tray 345, so that condensate water is utilized for humidification, water resources are saved, and meanwhile, the scaling caused by calcium and magnesium ions is avoided.
In order to reduce the starting frequency of the refrigeration system 2, as shown in fig. 8, a first electric valve 321 and a split flow pipe are provided in the liquid supply pipe 32, the water pump 31 is close to the tank type evaporator 23 with respect to the first electric valve 321 and the split flow pipe, the split flow pipe is connected in parallel with the first electric valve 321, and the coolant in the tank type evaporator 23 may flow directly to the heat exchange branch (heat exchange device 34) via the first electric valve 321 or may flow to the heat exchange branch (heat exchange device 34) via the split flow pipe. The diversion pipeline comprises at least one second electric valve 322 and a cold storage water tank 323, and the secondary refrigerant enters the cold storage water tank 323 through the second electric valve 322. When the refrigerating compartment 11 needs larger refrigerating medium, the first electric valve 321 and the second electric valve 322 are opened, and the refrigerating medium is directly output into the heat exchange device 34 of the refrigerating compartment 11 through the cold storage water tank 323; when the refrigerating compartment 11 does not require the coolant, the first electric valve 321 is closed and the coolant is stored in the cold storage tank 323; when a smaller coolant is required in the refrigerated compartment 11, the first electrically operated valve 321 is closed and coolant is delivered from the cold storage tank 323 to the heat transfer device 34 in the refrigerated compartment 11.
In order to control the temperature more precisely, the coolant with different evaporating temperature gradients and corresponding temperatures is used, in this embodiment, a plurality of temperature adjusting areas 12 are provided, the refrigeration system 2 is provided with a plurality of refrigeration branches, the plurality of refrigeration branches are arranged corresponding to the plurality of temperature adjusting areas 12, and the plurality of refrigeration branches are arranged between the condenser 21 and the compressor 22 in parallel. The refrigeration system 2 independently provides the refrigerant with the corresponding temperature for each refrigeration branch to evaporate and refrigerate by the water tank type evaporator 23 of the refrigeration branch, thereby realizing the evaporation temperature gradient control of the refrigeration system 2 and leading the refrigerated cabinet 100 to have different temperature partitions.
The evaporation temperature is set in a gradient manner, so that the energy efficiency ratio can be improved, the reasons are as follows (the following discussion is discussed according to a reasonable heat exchange temperature difference of 5 ℃):
1) The energy efficiency ratio can be improved by 3 to 3.5 percent approximately when the evaporation temperature is increased by 1 ℃;
2) If no gradient is established, the evaporating temperature of the refrigeration system 2 needs to be set at the minimum required temperature for the stored product: if some compartments need refrigeration at-10 ℃, the temperature of the secondary refrigerant should be-15 ℃ and the evaporation temperature should be-20 ℃; whereas some items actually stored require a higher storage temperature, such as bananas, with an optimal storage temperature of 13-15 c below which they tend to darken and rot. At this time, the temperature interval for cooling is more than 0 ℃, the temperature of the secondary refrigerant is far lower than the optimal storage temperature of the bananas, although the fan 343 of the heat exchange device 34 does not operate, air does not flow, the electromagnetic valve 35 is closed, the secondary refrigerant does not flow, and the secondary refrigerant retained in the heat exchanger 342 can slightly supercool the bananas for damage through radiation heat transfer; and the lowest evaporating temperature (-20 ℃) is adopted, which is equivalent to the system operating under the working condition of the lowest energy efficiency ratio;
3) Assuming that the energy efficiency ratio of the refrigeration system 2 is 2, the gradient cooling is provided, for example: the refrigerator 100 is divided into three gradients (-15 ℃, -5 ℃ and 5 ℃) for cooling, and the required evaporation temperatures are-20 ℃ and-10 ℃ and 0 ℃ respectively. At this time, the temperature range in which cooling is possible is-5 ℃ or higher; the energy efficiency ratios of the three temperature intervals are as follows:
the cooling interval is-10 to +0℃:2*1 =2;
the cooling interval is 0 ℃ to +10 ℃:2 (1+0.03×10) =2.6;
the cooling interval is 10-above: 2 (1+0.03×20) =3.2.
To sum up, the split gradient cooling is implemented, so that the refrigeration requirement of the articles is guaranteed (supercooling damage is avoided), and the energy efficiency ratio of the refrigeration system 2 is improved. The main energy consumption of the refrigerator 100 is the energy consumption of the refrigerating system 2, and the power consumption of other electric equipment such as a fan 343 and an electromagnetic valve 35 is very small; because the system has short pipeline, the power consumption of the water pump 31 is also small.
The working principle of the embodiment of the invention is as follows:
the refrigerating compartment 11 of the cabinet body 1 is divided into different temperature regulating areas 12, the refrigerating system 2 is connected with the cabinet body 1, the refrigerating system 2 is provided with refrigerating branches corresponding to the temperature regulating areas 12 according to the number of the temperature regulating areas 12, and the condenser 21, the compressor 22 and the refrigerating branches form a refrigerant circulation loop; the water tank type evaporator 23 is correspondingly provided with a secondary refrigerant conveying system 3 to form a secondary refrigerant circulation loop; each of the refrigeration compartments 11 corresponds to a heat exchange branch, the heat exchange means 34 being located within the refrigeration compartment 11 and the refrigeration compartments 11 being independent of each other. According to the use requirement, the refrigerating agent is distributed to the cabinet body 1 in a gradient manner, so that the energy efficiency ratio of the refrigerated cabinet 100 can be improved, and the refrigerated cabinet is refrigerated in a partitioned manner and is more suitable for preserving articles; the heat exchange device 34 is connected with the liquid supply pipeline 32 and the liquid return pipeline 33 through quick water-stopping joints, when the refrigerating compartment 11 is in fault, the heat exchange device 34 can be quickly detached and replaced, the work of other refrigerating compartments 11 is not influenced, and uninterrupted refrigeration is realized; in the heat exchange branch, condensed water is utilized for humidification, so that water resources are saved, and the concern of calcium and magnesium ion scaling is avoided; the design of the heat preservation door 13 and the heat preservation structure column 14 has tight heat preservation and saves more energy.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A refrigerated cabinet is characterized by comprising a cabinet body, a refrigerating system and a refrigerating medium conveying system;
the cabinet body is provided with a plurality of refrigerating compartments, and the refrigerating compartments form at least one temperature regulating area;
the refrigeration system comprises a condenser, a compressor and at least one refrigeration branch, wherein the condenser, the refrigeration branch and the compressor form a refrigerant circulation loop, the at least one refrigeration branch corresponds to the at least one temperature regulating area one by one, the refrigeration branch comprises a water tank type evaporator and an expansion valve, the water tank type evaporator comprises a refrigerant inlet, a refrigerant outlet, a secondary refrigerant inlet and a secondary refrigerant outlet, the expansion valve is positioned between the refrigerant inlet and the condenser, and the refrigerant outlet is connected with the compressor;
the refrigerating compartment corresponds to one heat exchange branch, the water tank type evaporator, the liquid supply pipeline, the plurality of heat exchange branches and the liquid return pipeline form a refrigerating medium circulation loop, the water pump is used for providing power for circulating the refrigerating medium, the water tank type evaporator is used for cooling the refrigerating medium, the heat exchange branch comprises a heat exchange device, and the heat exchange device is positioned in the refrigerating compartment and detachably connected with the cabinet;
the at least one water tank type evaporator is arranged in parallel, and different evaporation temperatures of different water tank type evaporators are set to meet the refrigerant temperature requirements of corresponding temperature regulating areas;
the refrigerating branches correspond to the plurality of temperature regulating areas, the refrigerating branches are arranged in parallel between the condenser and the compressor, the liquid supply pipeline is connected with the secondary refrigerant outlet of the water tank type evaporator through a quick water stop joint, and the liquid return pipeline is connected with the secondary refrigerant inlet of the water tank type evaporator through a quick water stop joint;
the heat exchange device comprises a shell, a heat exchanger and a fan, wherein the shell is provided with a heat dissipation space, the heat exchanger is positioned in the heat dissipation space and is connected with the shell, the fan is connected with the shell and is correspondingly arranged with the heat exchanger, the heat exchanger is respectively connected with the liquid supply pipeline and the liquid return pipeline, the heat exchange device is respectively communicated with the liquid supply pipeline and the liquid return pipeline through quick water-stop connectors, the fan is electrically connected with external control equipment, and the external control equipment is used for controlling the working state of the fan.
2. A refrigerated cabinet as recited in claim 1, wherein the heat transfer branch further includes a solenoid valve for controlling the flow of coolant through the heat transfer branch, the solenoid valve being electrically connected to an external control device for controlling the on and off state of the solenoid valve.
3. The refrigerated cabinet of claim 1 wherein the heat exchanger comprises a condensate pan, a drain pipe and an overflow pipe, wherein a humidifying assembly is arranged in the condensate pan, the drain pipe is positioned at the bottom of the condensate pan and is communicated with the condensate pan, a normally closed electromagnetic valve is arranged on the drain pipe, the overflow pipe is positioned at the upper part of the condensate pan, and two ends of the overflow pipe are respectively communicated with the condensate pan and the drain pipe.
4. The refrigerated cabinet of claim 1 wherein the supply line is provided with a first electrically operated valve and a diverter line, the water pump is positioned adjacent the tank evaporator relative to the first electrically operated valve and the diverter line, the diverter line is in parallel with the first electrically operated valve, the diverter line includes at least a second electrically operated valve and a cold storage tank, and coolant enters the cold storage tank through the second electrically operated valve.
5. A refrigerated cabinet in accordance with claim 1 wherein the refrigerated compartment is provided with a thermal door hinged to the cabinet for closing the refrigerated compartment;
the cabinet body is provided with a plurality of insulation structure posts, the insulation structure post extends along vertical direction, the cross section of insulation structure post is trapezoidal, the thermal insulation door includes link and free end, the link with the cabinet body articulates, the free end be provided with insulation structure post complex hypotenuse, when the thermal insulation door is in the closed state, the hypotenuse with insulation structure post laminating.
6. The refrigerated cabinet of claim 5 wherein the cabinet is provided with at least one rotational support assembly comprising two brackets disposed opposite each other along a height of the cabinet, one end of each bracket being connected to the cabinet, the other end of each bracket extending beyond the cabinet, a rotational shaft being disposed between the two brackets, the thermal door being rotatably connected to the rotational shaft, the thermal door being rotatable relative to the rotational shaft to effect opening or closing of the refrigerated compartment, a distance from an axis of the rotational shaft to the cabinet being greater than or equal to a thickness of the thermal door.
7. The refrigerated cabinet of claim 6 wherein the cross section of the insulated structural column is isosceles trapezoid, the plurality of refrigerated compartments includes a plurality of refrigerated units, the refrigerated units include two of the refrigerated compartments disposed adjacent to each other along the length of the cabinet, the insulated doors of the two refrigerated compartments are disposed opposite each other, and the two refrigerated compartments share one of the insulated structural columns.
8. The refrigerated cabinet of claim 7 wherein the two refrigerated compartments of the refrigerated unit are a first compartment and a second compartment, respectively, the thermal insulation door corresponding to the first compartment is a first thermal insulation door, the thermal insulation door corresponding to the second compartment is a second thermal insulation door, the first thermal insulation door shares one of the rotational axes with the second thermal insulation door of an adjacent refrigerated unit, the first thermal insulation door is rotatably connected with the rotational axes with the second thermal insulation door of an adjacent refrigerated unit, respectively, the first thermal insulation door is rotatable relative to the second thermal insulation door of an adjacent refrigerated unit, and the first thermal insulation door is in abutting engagement with the second thermal insulation door of an adjacent refrigerated unit when the first thermal insulation door is in a closed state and the second thermal insulation door of an adjacent refrigerated unit is in a closed state.
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| CN110553454A (en) * | 2019-08-27 | 2019-12-10 | 中国科学院理化技术研究所 | Split type ultra-low temperature freezer and cooling system |
| CN110579047A (en) * | 2019-09-24 | 2019-12-17 | 长虹美菱股份有限公司 | secondary refrigerant refrigerating system and modular refrigerator |
| CN211903455U (en) * | 2020-03-10 | 2020-11-10 | 茂进物流科技（苏州）有限公司 | Refrigeration system |
| CN113375396B (en) * | 2021-05-24 | 2023-05-09 | 深圳市智莱科技股份有限公司 | Refrigerator and temperature regulation control method |
| CN114279143B (en) * | 2021-12-31 | 2023-10-31 | 广东美的白色家电技术创新中心有限公司 | Refrigerating system and refrigerating equipment |
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