CN111811184A - Vertical refrigerator and control method thereof - Google Patents
Vertical refrigerator and control method thereof Download PDFInfo
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- CN111811184A CN111811184A CN202010583942.2A CN202010583942A CN111811184A CN 111811184 A CN111811184 A CN 111811184A CN 202010583942 A CN202010583942 A CN 202010583942A CN 111811184 A CN111811184 A CN 111811184A
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- refrigerating chamber
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005057 refrigeration Methods 0.000 claims abstract description 192
- 238000001816 cooling Methods 0.000 claims abstract description 111
- 238000001704 evaporation Methods 0.000 claims abstract description 45
- 230000008020 evaporation Effects 0.000 claims abstract description 45
- 238000007710 freezing Methods 0.000 claims description 19
- 230000008014 freezing Effects 0.000 claims description 19
- 230000017525 heat dissipation Effects 0.000 claims description 16
- 239000003507 refrigerant Substances 0.000 description 7
- 235000013305 food Nutrition 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- 241000143060 Americamysis bahia Species 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 235000013611 frozen food Nutrition 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 235000015277 pork Nutrition 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
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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
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- 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 vertical refrigerator and a control method thereof; the vertical refrigerator comprises a box body, a first refrigerating system, an air duct assembly and a second refrigerating system, wherein a first refrigerating chamber, a second refrigerating chamber and an evaporation bin are arranged in the box body; the first refrigerating system is used for cooling air in the evaporation bin; the air duct of the air duct assembly is used for enabling the evaporation bin to be communicated with the first refrigerating chamber and the second refrigerating chamber respectively; the air door of the air duct assembly is used for opening and closing the communication relation between the evaporation bin and the second refrigerating chamber; the second refrigeration system is used for independently providing refrigeration for the second refrigeration compartment. The first refrigerating system is matched with the air door for control, and the air cooling refrigeration is selectively carried out on the second refrigerating chamber; meanwhile, the second refrigerating system independently performs direct cooling refrigeration on the second refrigerating chamber; the second refrigerating chamber has two refrigerating modes of air cooling and direct cooling at the same time, and the use modes of various different temperature areas in the second refrigerating chamber are realized through the selective cooperation of the air cooling and the direct cooling.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a vertical refrigerator and a control method thereof.
Background
The vertical refrigerator is applied to the life of users, can store articles at low temperature as a common storage device, has a simple appearance and large refrigerating capacity, and is widely applied to places such as shops, supermarkets and the like.
In the related art, the vertical refrigerator is usually a single-press structure, which mainly adopts pure freezing, and cannot meet the requirements of some differentiated users, for example, the temperature range required by the users is wide, and common frozen foods (such as pork and mutton for low-temperature preservation at-18 ℃) and deep-frozen foods (such as deep-sea fish and shrimps for low-temperature preservation below-40 ℃) need to be stored at the same time. The single press controls two different temperature areas to refrigerate, generally has the defect of insufficient refrigerating capacity, and in order to achieve the refrigeration of the different freezing temperature areas, the compressor is frequently started, the cold quantity distribution is unreasonable, the cooling speed is slow, and the energy consumption is large.
Disclosure of Invention
The invention aims to provide a vertical refrigerator, which is used for optimizing a refrigerating structure of the vertical refrigerator in the prior art and can meet refrigerating requirements of different low-temperature areas at the same time.
The invention also aims to provide a control method of the vertical refrigerator, so that the required deep cooling temperature can be reached at the highest speed and the cooling time can be shortened when deep refrigeration is required.
In order to solve the technical problems, the invention adopts the following technical scheme:
according to one aspect of the invention, the invention provides a vertical freezer comprising: the refrigerator comprises a box body, a first refrigerating chamber, a second refrigerating chamber and an evaporation bin, wherein the box body is internally provided with the first refrigerating chamber, the second refrigerating chamber and the evaporation bin which are separated; the first refrigeration system comprises a first compressor and an indirect cooling evaporator, wherein the first compressor is connected with the indirect cooling evaporator to form a first refrigeration loop; the first compressor is arranged in the box body; the indirect cooling evaporator is arranged in the evaporation bin and is used for cooling air in the evaporation bin; the air duct assembly comprises an air duct and an air door; the air duct is provided with an air inlet communicated with the evaporation bin, a first air supply outlet communicated with the first refrigeration chamber and a second air supply outlet communicated with the second refrigeration chamber; the air door is movably arranged corresponding to the second air supply outlet and is used for opening and closing the second air supply outlet; the second refrigeration system comprises a second compressor and a direct-cooling evaporator, and the second compressor is connected with the direct-cooling evaporator to form a second refrigeration loop; the second refrigeration circuit is independent of the first refrigeration circuit; the second compressor is arranged in the box body; the direct cooling evaporator is attached to the outer wall of the second refrigerating chamber and used for independently providing cold for the second refrigerating chamber.
In some embodiments of the present application, the second refrigeration compartment is located above the first refrigeration compartment; a first accommodating cavity is formed in the bottom of the box body and below the first refrigerating chamber, and the first compressor is arranged in the first accommodating cavity; and a second accommodating cavity is formed in the top of the box body above the second refrigerating chamber, and the second compressor is arranged in the second accommodating cavity.
In some embodiments of the present application, the first refrigeration system further comprises a first condenser and a heat rejection fan; the first condenser and the heat dissipation fan are both arranged in the first accommodating cavity, the heat dissipation fan is arranged between the first condenser and the first compressor, the air suction side of the heat dissipation fan faces the first condenser, and the air outlet side of the heat dissipation fan faces the first compressor; the second refrigeration system further comprises a second condenser, and the second condenser is laid in the side wall of the box body.
Some embodiments of this application, be equipped with first backup pad and the second backup pad that the interval set up on the bottom surface of first holding chamber, first compressor sets up on the first backup pad, cooling fan sets up in the second backup pad.
In some embodiments of the present application, the evaporation bin is disposed on a back side of the first refrigeration compartment; the first refrigerating chamber is provided with an air return opening or a first air return pipe communicated with the evaporation bin, so that air in the first refrigerating chamber returns to the evaporation bin through the air return opening or the first air return pipe; and the second refrigerating chamber is provided with a second air return pipe communicated with the evaporation bin, so that air in the second refrigerating chamber returns to the evaporation bin through the second air return pipe.
In some embodiments of the present application, the direct cooling evaporator is a cooling pipe attached to and wound on an outer wall of the second cooling chamber; the indirect cooling evaporator is a fin evaporator.
According to another aspect of the present invention, the present invention further provides a control method for a vertical refrigerator, which includes: acquiring a request for deep refrigeration of the second refrigeration compartment; controlling the first compressor to be in an open state and controlling the air door to be in an open state; starting the second compressor; closing the damper when the temperature in the second refrigerating compartment is less than a preset temperature threshold; and keeping the opening state of the second compressor until the temperature in the second refrigerating chamber reaches the deep refrigerating temperature.
In some embodiments of the present application, before starting the second compressor, an on-duration of the first compressor is further detected, and after the on-duration of the first compressor reaches a preset time threshold, the second compressor is started.
In some embodiments of the present application, the control method further includes: and after the air door is closed, detecting the real-time temperature of the first refrigerating chamber, and controlling the operation of the first compressor according to the difference value between the real-time temperature and the preset temperature of the first refrigerating chamber.
In some embodiments of the present application, the control method further includes: when a request for refrigerating or freezing refrigeration of the second refrigerating chamber is obtained, the first compressor is controlled to be in an open state and the air door is controlled to be in an open state; maintaining the second compressor in an off state; keeping the opening state of the air door until the temperature in the second refrigerating chamber reaches the refrigerating temperature or the freezing temperature; when a request for temperature-changing refrigeration of the second refrigeration compartment is obtained, the air door is controlled to be in a closed state; starting the second compressor; and keeping the starting state of the second compressor until the temperature in the second refrigerating chamber reaches the temperature-changing refrigerating temperature.
According to the technical scheme, the embodiment of the invention at least has the following advantages and positive effects:
in the vertical refrigerator provided by the embodiment of the invention, two mutually independent refrigerating systems are arranged in a box body, and a first refrigerating loop is formed by utilizing a first compressor and an indirect cooling evaporator in a first refrigerating system and is used for cooling air in an evaporation bin; the air ducts are used for respectively providing cold air for the first refrigerating chamber and the second refrigerating chamber, and the air ducts are matched with the opening and closing control of the air door to selectively carry out air cooling refrigeration on the second refrigerating chamber; meanwhile, a second compressor and a direct-cooling evaporator in a second refrigeration system are matched to form a second refrigeration loop which is used for independently performing direct-cooling refrigeration on a second refrigeration chamber; therefore, the second refrigerating chamber has two refrigerating modes of air cooling and direct cooling at the same time, and the use modes of various different temperature areas can be realized in the second refrigerating chamber through the selective cooperation of the air cooling and the direct cooling.
According to the control method of the vertical refrigerator, the first refrigeration system and the second refrigeration system are matched for operation, the first refrigeration system is used for carrying out air cooling refrigeration on the second refrigeration chamber, the second refrigeration system is used for carrying out direct cooling refrigeration on the second refrigeration chamber, and the first refrigeration system and the second refrigeration system are matched with each other, so that the cooling speed of the second refrigeration chamber can be maximized, the required deep cooling temperature can be reached at the highest speed when deep refrigeration is required, the cooling time is shortened, and the cooling speed is improved.
Drawings
Fig. 1 is a schematic perspective view of an upright freezer according to an embodiment of the invention.
Fig. 2 is a schematic view of a refrigeration system within the upright cooler of fig. 1.
Fig. 3 is a schematic diagram of the first refrigeration circuit of fig. 2.
Fig. 4 is a schematic diagram of the second refrigeration circuit of fig. 2.
Fig. 5 is a schematic structural view of the first accommodating chamber and the second accommodating chamber in the box body in fig. 1.
Fig. 6 is a schematic view of the structure of the second refrigerating compartment in fig. 2.
The reference numerals are explained below:
1. a box body;
11. a first refrigeration compartment; 111. a first air return pipe; 112. a first air supply outlet; 12. a second refrigeration compartment; 121. a second return air duct; 122. a second air supply outlet; 13. an evaporation bin; 14. a door body; 15. a first accommodating cavity; 151. a first support plate; 152. a second support plate; 16. a second accommodating cavity;
20. a first refrigeration circuit;
21. a first compressor; 22. a first condenser; 23. a first dry filter; 24. a first throttling device; 25. an indirect cooling evaporator; 26. a heat radiation fan;
31. an air duct housing; 311. a pipeline; 32. a damper;
40. a second refrigeration circuit;
41. a second compressor; 42. a second condenser; 43. a second dry filter; 44. a second throttling device; 45. a direct cooling evaporator.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The vertical refrigerator is applied to the life of users, can store articles at low temperature as a common storage device, has a simple appearance and large refrigerating capacity, and is widely applied to places such as shops, supermarkets and the like.
In the related art, the vertical refrigerator is usually a single-press structure, which mainly adopts pure freezing, and cannot meet the requirements of some differentiated users, for example, the temperature range required by the users is wide, and common frozen foods (such as pork and mutton for low-temperature preservation at-18 ℃) and deep-frozen foods (such as deep-sea fish and shrimps for low-temperature preservation below-40 ℃) need to be stored at the same time. The single press controls two different temperature areas to refrigerate, generally has the defects of low cooling speed and insufficient refrigerating capacity, and the compressor is frequently started to refrigerate in the different freezing temperature areas, the cold quantity distribution is unreasonable, the cooling speed is low, and the energy consumption is high.
Fig. 1 is a schematic perspective view of an upright freezer according to an embodiment of the invention. Fig. 2 is a schematic view of a refrigeration system within the upright cooler of fig. 1. Fig. 3 is a schematic diagram of the first refrigeration circuit 20 of fig. 2. Fig. 4 is a schematic diagram of the second refrigeration circuit 40 of fig. 2.
Referring to fig. 1 to 3, the vertical refrigerator provided in the embodiment of the present invention includes a box body 1, a first refrigeration system, an air duct assembly, and a second refrigeration system.
The box body 1 can be in a cuboid structure, and a first refrigerating chamber 11, a second refrigerating chamber 12 and an evaporation bin 13 which are separated from each other are arranged in the box body.
The refrigerator body 1 is provided with a plurality of door bodies 14, the door bodies 14 are movably connected to the refrigerator body 1, and the door bodies 14 are used for respectively opening or closing the first refrigerating chamber 11 and the second refrigerating chamber 12.
Referring to fig. 2, the second refrigeration compartment 12 and the first refrigeration compartment 11 are distributed vertically, and the second refrigeration compartment 12 is disposed above the first refrigeration compartment 11.
The first refrigerated compartment 11 is intended to act as a freezer compartment for storing normal frozen food products below-18 c.
The second refrigerating compartment 12 is used as a refrigerating compartment, a freezing compartment, a temperature changing compartment and a deep cooling compartment; wherein, when the refrigerator is used as a refrigerating chamber, the temperature range is 0-10 ℃, and the refrigerator is used for refrigerating and refreshing foods; when the freezing chamber is used as a freezing chamber, the temperature range is-18 ℃ to-25 ℃ and is used for freezing food; when the temperature-variable chamber is used as a temperature-variable chamber, the temperature range is 10 ℃ to-30 ℃ and the temperature-variable chamber is used for wide refrigeration; when used as a deep cooling chamber, the temperature range is-40 ℃ to-60 ℃, and the deep cooling preservation method is used for preserving food such as deep sea fish, shrimps and the like by deep cooling.
The evaporation bin 13 is arranged on the back side of the first refrigeration compartment 11, and the evaporation bin 13 is used for refrigerating the first refrigeration system to form cold air and provide the cold air for the first refrigeration compartment 11 and the second refrigeration compartment 12.
In some embodiments, the first refrigerating compartment 11 is provided with a return air inlet or a first return air pipe 111 communicated with the air inlet side of the evaporation bin 13, and the return air inlet can be opened on the side wall of the first refrigerating compartment 11 adjacent to the evaporation bin 13, so that the air in the first refrigerating compartment 11 can be returned to the evaporation bin 13 through the return air inlet or the first return air pipe 111.
The second refrigerating compartment 12 is provided with a second air return pipe 121 communicated with the air inlet side of the evaporation bin 13, so that the air in the second refrigerating compartment 12 returns to the evaporation bin 13 through the second air return pipe 121.
Fig. 5 is a schematic structural view of the first receiving chamber 15 and the second receiving chamber 16 in the case 1 of fig. 1.
Referring to fig. 5, a first accommodating cavity 15 is arranged at the bottom of the box body 1 below the first refrigerating compartment 11; a second accommodating cavity 16 is arranged at the top of the box body 1 above the second refrigerating chamber 12.
Referring to fig. 2, 3 and 5, the first refrigerating system is disposed in the cabinet 1 to correspond to the evaporation bin 13, and cools air in the evaporation bin 13.
The first refrigeration system includes a first compressor 21, a first condenser 22, a first dry filter 23, a first throttling device 24, and an intercooling evaporator 25. The first refrigeration system is arranged at the lower part of the box body 1 and corresponds to the evaporation bin 13 and the first accommodating cavity 15.
Wherein, indirect cooling evaporator 25 is arranged in evaporation bin 13, indirect cooling evaporator 25 can adopt fin evaporator.
The first compressor 21, the first condenser 22, the first filter drier 23 and the first throttling device 24 may be disposed in the first accommodating chamber 15.
In some embodiments, the first refrigeration system further includes a heat dissipation fan 26, the heat dissipation fan 26 is disposed in the first accommodating cavity 15 and is disposed between the first condenser 22 and the first compressor 21, a suction side of the heat dissipation fan 26 faces the first condenser 22, and an air outlet side of the heat dissipation fan 26 faces the first compressor 21, so that the heat dissipation fan 26 can cool the first condenser 22 and the first compressor 21 simultaneously.
In some embodiments, the first supporting plate 151 and the second supporting plate 152 are disposed on the bottom surface of the first accommodating chamber 15 and are separated from each other, the first compressor 21 is disposed on the first supporting plate 151, the heat dissipation fan 26 is disposed on the second supporting plate 152, and the first supporting plate 151 and the second supporting plate 152 are independent from each other, so that resonance between the first compressor 21 and the heat dissipation fan 26 can be effectively avoided, and the purpose of reducing noise is achieved.
In the first refrigeration system, an outlet of the first compressor 21 is connected to an inlet of the first condenser 22, an outlet of the first condenser 22 is connected to an inlet of the first dry filter 23, an outlet of the first dry filter 23 is connected to an inlet of the first throttling device 24, an outlet of the first throttling device 24 is connected to an inlet of the intercooling evaporator 25, and an outlet of the intercooling evaporator 25 is connected to an inlet of the first compressor 21, thereby forming the first refrigeration circuit 20.
In the refrigeration process of the first refrigeration circuit 20, a gaseous refrigerant enters the first compressor 21, is compressed by the first compressor 21 to become a high-temperature high-pressure refrigerant vapor, enters the first condenser 22 to be condensed to become a high-pressure medium-temperature liquid refrigerant, is dried by the first drying filter 23, enters the first throttling device 24 to be throttled and depressurized to become a low-temperature low-pressure refrigerant, enters the intercooling evaporator 25 to absorb heat in the evaporation bin 13, and finally returns to the first compressor 21 to form a refrigeration cycle.
During the circuit refrigeration cycle, the heat in the evaporation bin 13 is absorbed greatly, so that a large amount of cold air can be formed in the evaporation bin 13.
Referring to fig. 2, the air duct assembly is disposed in the box body 1 and is used for communicating the evaporation bin 13 with the first refrigeration compartment 11 and the second refrigeration compartment 12, and the air duct assembly includes an air duct, an air door 32 and a fan.
The air duct has an air inlet communicated with the evaporation bin 13, a first air supply outlet 112 communicated with the first refrigerating compartment 11, and a second air supply outlet 122 communicated with the second refrigerating compartment 12.
Cold air in the evaporation bin 13 enters the air channel through the air inlet; flows through the air duct and enters the first refrigerating compartment 11 from the first air supply outlet 112, so that the first refrigerating compartment 11 is cooled by air; meanwhile, the cold air entering the air duct can flow through the air duct and enter the second refrigerating compartment 12 from the second air supply outlet 122, so that the second refrigerating compartment 12 is cooled by air cooling.
It should be noted that the air duct assembly may include an air duct housing 31 and a corresponding pipeline 311, and the air duct may be formed in the air duct housing 31 and communicate with the first cooling compartment 11 and the second cooling compartment 12 through the corresponding pipeline 311.
In some embodiments, as shown in fig. 2, the air duct housing 31 may be disposed on the top of the evaporation bin 13 and attached to the back side of the first refrigeration compartment 11, and the air inlet is disposed on the air duct housing 31; the first air supply outlet 112 is arranged on the side wall of the first refrigeration compartment 11, and a plurality of first air supply outlets 112 are arranged, so that cold air can enter the first refrigeration compartment 11 dispersedly; the second air supply outlet 122 is opened on the side wall of the second refrigeration compartment 12, a plurality of second air supply outlets 122 may be provided, and the top of the air duct shell 31 is communicated with the second air supply outlet 122 through a corresponding pipeline 311.
The fan is arranged in the air duct and used for providing power for the flow of air in the air duct to form a stable airflow direction. The fan may be a centrifugal fan, for example, disposed in the air duct shell 31 and correspondingly disposed at the air inlet, and sucks the cold air in the evaporation bin 13 into the air duct and diffuses in the air duct, so as to provide power for the air flow in the direction of the first air supply opening 112 and the second air supply opening 122.
The damper 32 is movably disposed corresponding to the second supply port 122, and is used for opening and closing the second supply port 122. The air door 32 may be disposed at a connection position between the top of the air duct housing 31 and the corresponding pipeline 311, and the air duct corresponding to the pipeline 311 is opened or closed by motor control, so as to open or close the second air supply outlet 122, and control whether the cold air enters the second refrigeration compartment 12 for air cooling.
Referring to fig. 2, 4 and 5, the second refrigeration system is disposed in the cabinet 1, and is disposed corresponding to the second refrigeration compartment 12, and is used for separately providing refrigeration capacity to the second refrigeration compartment 12. The second refrigeration system is independent from the first refrigeration system.
The second refrigeration system includes a second compressor 41, a second condenser 42, a second dry filter 43, a second throttle device 44, and a direct-cooling evaporator 45. The second refrigeration system is arranged at the upper part of the box body 1 and corresponds to the second refrigeration compartment 12 and the second accommodating cavity 16. The second refrigerating system and the first refrigerating system are arranged far away from each other, so that the two refrigerating systems can radiate more reasonably, and the efficiency of the compressor is higher.
Fig. 6 is a schematic view of the structure of the second refrigerated compartment 12 in fig. 2.
Referring to fig. 6, the direct cooling evaporator 45 is attached to the outer wall of the second cooling compartment 12, and directly absorbs heat from the inner wall of the second cooling compartment 12 in a direct cooling mode.
In some embodiments, the direct cooling evaporator 45 employs refrigeration tubes attached to and coiled around the outer wall of the second refrigeration compartment 12.
Referring to fig. 2 and 5, the second compressor 41, the second filter drier 43 and the second throttling device 44 are disposed in the second accommodating chamber 16; the second condenser 42 is laid in the side wall of the cabinet 1, such as in the foam layer, to increase its heat dissipation area, facilitate natural cooling, and at the same time, effectively reduce the volume required by the second accommodating chamber 16, to increase the effective volume in the refrigerator. In the second refrigeration system, the outlet of the second compressor 41 is connected to the inlet of the second condenser 42, the outlet of the second condenser 42 is connected to the inlet of the second dry filter 43, the outlet of the second dry filter 43 is connected to the inlet of the second throttling device 44, the outlet of the second throttling device 44 is connected to the inlet of the direct cooling evaporator 45, and the outlet of the direct cooling evaporator 45 is connected to the inlet of the second compressor 41, thereby forming the second refrigeration circuit 40. The second refrigeration circuit 40 is independent of the first refrigeration circuit 20.
In the refrigeration process of the second refrigeration loop 40, after being compressed by the second compressor 41, the refrigerant sequentially passes through the second condenser 42 for condensation, the second drying filter 43 and the second throttling device 44, enters the direct-cooling evaporator 45, and directly absorbs the heat of the inner wall of the second refrigeration chamber 12 contacted with the refrigerant; finally, the refrigerant returns to the second compressor 41 to form a refrigeration cycle.
In the process of the loop refrigeration cycle, the heat of the inner wall of the second refrigeration compartment 12 is absorbed in a large amount, so that the second refrigeration compartment 12 is directly refrigerated, the temperature of the inner wall of the second refrigeration compartment 12 is reduced, and the temperature of the air in the second refrigeration compartment 12 is further reduced.
Referring to fig. 2, the first refrigeration system and the second refrigeration system are independent from each other, so that the first refrigeration system and the second refrigeration system can be selectively controlled to operate independently or cooperate with each other for refrigeration, so that the second refrigeration compartment 12 can realize refrigeration modes of different temperature zones, and provide various different use modes.
When the first refrigerating system is independently started to operate, the first refrigerating chamber 11 is used as a common refrigerating storage area, and the temperature range of the first refrigerating chamber can be-18 ℃ to-25 ℃; the cold storage (0-10 ℃) or the freezing (-18 ℃ -minus 20 ℃) of the second refrigeration compartment 12 can be realized by opening or closing the air door 32, and the two storage requirements with different purposes can be realized.
When the second refrigeration system is independently started to operate, the air door 32 is closed, and the storage requirements of the second refrigeration chamber 12 with different purposes of temperature change (10 ℃ to minus 30 ℃) or deep cooling (40 ℃ to minus 60 ℃) can be realized.
Therefore, the second refrigerating compartment 12 can realize refrigerating modes of different temperature zones of refrigeration, freezing, temperature variation and deep cooling, namely, can realize using modes of refrigeration, freezing, temperature variation, deep cooling and the like.
In the mode of temperature-changing and deep-cooling refrigeration of the second refrigeration compartment 12, if the first refrigeration system is adopted to simultaneously meet the requirements of the refrigeration of the first refrigeration compartment 11 and the temperature-changing or deep-cooling mode of the second refrigeration compartment 12, the defect of insufficient refrigeration capacity is obviously caused; in order to make the second refrigerating chamber 12 reach a temperature range of variable temperature or deep cooling, the first refrigerating system needs to be started frequently, and the problems of unbalanced cold quantity distribution, slow cooling speed, high energy consumption and the like exist.
Referring to fig. 2, based on the layout of the vertical refrigerator structure and the dual refrigeration system, the embodiment of the invention further provides a control method of the vertical refrigerator, which is mainly applied to the vertical refrigerator, wherein the second refrigeration compartment 12 is in refrigeration modes of different temperature regions, such as a refrigeration mode, a freezing mode, a temperature changing mode and a deep cooling mode, so as to realize accurate refrigeration according to needs, perform zone low temperature control, accelerate the refrigeration speed of the compartments of different temperatures, and reduce power consumption.
The control method comprises the following steps in a deep cooling mode:
step S10, when a request for deep cooling of the second cooling compartment 12 is acquired; for example, the main control board or an information obtaining unit integrated on the main control board is used to obtain the requested information of the deep cooling mode required to be performed for the second cooling compartment 12 and the required deep cooling temperature to be reached.
Step S20, after the opening request is obtained, the first compressor 21 is controlled to be in the starting state and the air door 32 is controlled to be in the opening state, the second compressor 41 is started, so that the first refrigeration system and the second refrigeration system operate simultaneously, the first refrigeration system performs air cooling refrigeration on the second refrigeration chamber 12, the second refrigeration system performs direct cooling refrigeration on the second refrigeration chamber 12, and the two refrigeration systems cooperate with each other to maximize the cooling speed of the second refrigeration chamber 12, so as to reach the required deep cooling temperature at the highest speed, shorten the cooling time, and improve the cooling speed.
Step S30, when the temperature in the second refrigeration compartment 12 is lower than a preset temperature threshold value, such as minus 30 ℃, closing the air door 32, and cutting off the air cooling refrigeration function of the first refrigeration system to the second refrigeration compartment 12; the second compressor 41 is kept in the on state, and the second refrigeration system is used to perform direct cooling refrigeration on the second refrigeration compartment 12 alone until the temperature in the second refrigeration compartment 12 reaches the deep refrigeration temperature.
The purpose of closing the damper 32 is to avoid damage to the fan in the duct due to air temperatures below a predetermined temperature threshold, which is typical for conventional fans that cannot operate normally below-40 ℃.
Step S40, detecting the real-time temperature of the first cooling compartment 11 after the damper 32 is closed, and controlling the operation of the first compressor 21 according to the difference between the detected real-time temperature and the preset temperature of the first cooling compartment 11.
If the real-time temperature is less than the preset temperature, the operation state of the first compressor 21 is maintained until the temperature of the first refrigerating compartment 11 reaches the preset temperature.
If the real-time temperature is greater than the preset temperature, the first compressor 21 is turned off.
If the preset temperature is not available, it indicates that there is no refrigeration demand in the first refrigeration compartment 11, and the first compressor 21 is turned off, so as to achieve the purpose of saving energy.
In some embodiments, the first refrigeration system and the second refrigeration system need to be turned on in time-staggered manner, so as to avoid the resonance phenomenon when the first compressor 21 and the second compressor 41 are turned on simultaneously, and therefore the first compressor 21 and the second compressor 41 need to be turned on successively; the first compressor 21 and the second compressor 41 are started to be separated by a certain preset time threshold, such as 5 min; therefore, in step S20, before the second compressor 41 is started, the on-time duration of the first compressor 21 is detected, and after the on-time duration of the first compressor 21 reaches the preset time threshold, the second compressor 41 is started again to avoid resonance. It should be noted that the second compressor 41 may be started first, and then the first compressor 21 may be started.
The control method comprises the following steps in a refrigeration mode or a freezing mode:
when a request for refrigerating or freezing the second compartment 12 is obtained, the first compressor 21 is controlled to be in an open state and the damper 32 is controlled to be in an open state; keeping the second compressor 41 in the off state; the open state of the damper 32 is maintained until the temperature in the second compartment 12 reaches the refrigerating or freezing temperature.
The control method comprises the following steps in a temperature-changing mode:
when a request for temperature-changing refrigeration of the second refrigeration compartment 12 is obtained, the air door 32 is controlled to be in a closed state; starting the second compressor 41; the on-state of the second compressor 41 is maintained until the temperature in the second compartment 12 reaches the temperature-swing refrigeration temperature.
According to the technical scheme, the embodiment of the invention at least has the following advantages and positive effects:
in the vertical refrigerator of the embodiment of the invention, two mutually independent refrigerating systems are arranged in a box body 1, and a first compressor 21 and an indirect cooling evaporator 25 in the first refrigerating system are utilized to form a first refrigerating loop 20 for cooling air in an evaporation bin 13; an air duct is used for respectively providing cold air for the first refrigerating chamber 11 and the second refrigerating chamber 12, and air cooling refrigeration is selectively carried out on the second refrigerating chamber 12 by matching with the opening and closing control of the air door 32; meanwhile, a second refrigeration loop 40 is formed by matching a second compressor 41 and a direct-cooling evaporator 45 in the second refrigeration system, and is used for independently performing direct-cooling refrigeration on the second refrigeration compartment 12; therefore, the second refrigeration compartment 12 has two refrigeration modes of wind cooling and direct cooling at the same time, and the use modes of various temperature areas can be realized in the second refrigeration compartment 12 through the selective cooperation of the wind cooling and the direct cooling.
In the control method of the vertical refrigerator provided by the embodiment of the invention, the first refrigeration system and the second refrigeration system are matched for operation, the first refrigeration system is used for carrying out air cooling refrigeration on the second refrigeration chamber 12, the second refrigeration system is used for carrying out direct cooling refrigeration on the second refrigeration chamber 12, and the first refrigeration system and the second refrigeration system are matched for maximizing the cooling speed of the second refrigeration chamber 12 so as to achieve the purpose of improving the cooling speed.
While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. A vertical freezer, comprising:
the refrigerator comprises a box body, a first refrigerating chamber, a second refrigerating chamber and an evaporation bin, wherein the box body is internally provided with the first refrigerating chamber, the second refrigerating chamber and the evaporation bin which are separated;
the first refrigeration system comprises a first compressor and an indirect cooling evaporator, wherein the first compressor is connected with the indirect cooling evaporator to form a first refrigeration loop; the first compressor is arranged in the box body; the indirect cooling evaporator is arranged in the evaporation bin and is used for cooling air in the evaporation bin;
the air duct assembly comprises an air duct and an air door; the air duct is provided with an air inlet communicated with the evaporation bin, a first air supply outlet communicated with the first refrigeration chamber and a second air supply outlet communicated with the second refrigeration chamber; the air door is movably arranged corresponding to the second air supply outlet and is used for opening and closing the second air supply outlet; and
the second refrigeration system comprises a second compressor and a direct-cooling evaporator, and the second compressor is connected with the direct-cooling evaporator to form a second refrigeration loop; the second refrigeration circuit is independent of the first refrigeration circuit; the second compressor is arranged in the box body; the direct cooling evaporator is attached to the outer wall of the second refrigerating chamber and used for independently providing cold for the second refrigerating chamber.
2. The upright cooler of claim 1 wherein the second cooling compartment is located above the first cooling compartment;
a first accommodating cavity is formed in the bottom of the box body and below the first refrigerating chamber, and the first compressor is arranged in the first accommodating cavity;
and a second accommodating cavity is formed in the top of the box body above the second refrigerating chamber, and the second compressor is arranged in the second accommodating cavity.
3. The vertical cooler of claim 2, wherein the first refrigeration system further comprises a first condenser and a heat rejection fan; the first condenser and the heat dissipation fan are both arranged in the first accommodating cavity, the heat dissipation fan is arranged between the first condenser and the first compressor, the air suction side of the heat dissipation fan faces the first condenser, and the air outlet side of the heat dissipation fan faces the first compressor;
the second refrigeration system further comprises a second condenser, and the second condenser is laid in the side wall of the box body.
4. The vertical refrigerator of claim 3, wherein the bottom surface of the first accommodating chamber is provided with a first supporting plate and a second supporting plate which are arranged at intervals, the first compressor is arranged on the first supporting plate, and the cooling fan is arranged on the second supporting plate.
5. The vertical refrigerator of claim 1 wherein said evaporation compartment is disposed on a back side of said first compartment;
the first refrigerating chamber is provided with an air return inlet or a first air return pipe communicated with the evaporation bin;
and a second air return pipe communicated with the evaporation bin is arranged in the second refrigeration compartment.
6. The vertical refrigerator of claim 1 wherein the direct cooling evaporator is a cooling tube attached to and coiled around the outer wall of the second cooling compartment; the indirect cooling evaporator is a fin evaporator.
7. A control method of the vertical refrigerator as claimed in any one of claims 1 to 6, comprising:
acquiring a request for deep refrigeration of the second refrigeration compartment;
controlling the first compressor to be in an open state and controlling the air door to be in an open state;
starting the second compressor;
closing the damper when the temperature in the second refrigerating compartment is less than a preset temperature threshold; and keeping the opening state of the second compressor until the temperature in the second refrigerating chamber reaches the deep refrigerating temperature.
8. The method of controlling the vertical refrigerator according to claim 7, wherein the on duration of the first compressor is further detected before the second compressor is started, and the second compressor is started after the on duration of the first compressor reaches a preset time threshold.
9. The control method of the vertical refrigerator of claim 7, wherein the refrigeration control method further comprises:
and after the air door is closed, detecting the real-time temperature of the first refrigerating chamber, and controlling the operation of the first compressor according to the difference value between the real-time temperature and the preset temperature of the first refrigerating chamber.
10. The method of controlling an upright cooler of claim 7, further comprising:
when a request for refrigerating or freezing refrigeration of the second refrigerating chamber is obtained, the first compressor is controlled to be in an open state and the air door is controlled to be in an open state; maintaining the second compressor in an off state; keeping the opening state of the air door until the temperature in the second refrigerating chamber reaches the refrigerating temperature or the freezing temperature;
when a request for temperature-changing refrigeration of the second refrigeration compartment is obtained, the air door is controlled to be in a closed state; starting the second compressor; and keeping the starting state of the second compressor until the temperature in the second refrigerating chamber reaches the temperature-changing refrigerating temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010583942.2A CN111811184A (en) | 2020-06-23 | 2020-06-23 | Vertical refrigerator and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010583942.2A CN111811184A (en) | 2020-06-23 | 2020-06-23 | Vertical refrigerator and control method thereof |
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| CN111811184A true CN111811184A (en) | 2020-10-23 |
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| CN202010583942.2A Pending CN111811184A (en) | 2020-06-23 | 2020-06-23 | Vertical refrigerator and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114593557A (en) * | 2022-03-31 | 2022-06-07 | 海信（山东）冰箱有限公司 | Refrigerator and refrigeration control method thereof |
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Application publication date: 20201023 |
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