CN116558183A - Vehicle-mounted refrigerator and control method thereof - Google Patents

Vehicle-mounted refrigerator and control method thereof Download PDF

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Publication number
CN116558183A
CN116558183A CN202310613998.1A CN202310613998A CN116558183A CN 116558183 A CN116558183 A CN 116558183A CN 202310613998 A CN202310613998 A CN 202310613998A CN 116558183 A CN116558183 A CN 116558183A
Authority
CN
China
Prior art keywords
heat exchanger
refrigeration
control valve
heat
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310613998.1A
Other languages
Chinese (zh)
Inventor
刘良文
马刚
杜康宁
杨玉生
胡强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202310613998.1A priority Critical patent/CN116558183A/en
Publication of CN116558183A publication Critical patent/CN116558183A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
    • B60N3/10—Arrangements or adaptations of other passenger fittings, not otherwise provided for of receptacles for food or beverages, e.g. refrigerated
    • B60N3/104—Arrangements or adaptations of other passenger fittings, not otherwise provided for of receptacles for food or beverages, e.g. refrigerated with refrigerating or warming systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—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
    • F25D29/005—Mounting of control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D31/00—Other cooling or freezing apparatus

Abstract

The invention provides a vehicle-mounted refrigerator and a control method thereof, wherein the vehicle-mounted refrigerator comprises: compressor, refrigeration heat exchanger, refrigeration case and first heat exchanger, the compressor the refrigeration heat exchanger with at least part of structure in the first heat exchanger connection formation refrigeration circulation circuit, refrigeration heat exchanger set up in the inside of refrigeration case can be right the inside air current of refrigeration case refrigerates, on-vehicle refrigerator still includes first fan, first fan also set up in the inside of refrigeration case, just first fan with refrigeration heat exchanger sets up relatively, in order can drive or strengthen the interior air current of refrigeration case with heat transfer between the refrigeration heat exchanger. According to the invention, the heat exchange in the refrigeration box is more uniform, the consistency of food cooling and heating is ensured, the freezing phenomenon of the refrigeration box is reduced or stopped, and the problem that the traditional portable refrigerator is easy to freeze is effectively solved.

Description

Vehicle-mounted refrigerator and control method thereof
Technical Field
The invention relates to the technical field of refrigerators, in particular to a vehicle-mounted refrigerator and a control method thereof.
Background
Compared with a household air conditioner, the portable refrigerator has the advantages of small occupied area, portability, low energy consumption and the like, and can greatly improve the quality of self-driving travel as a product with strong experience in a self-driving travel scene, so that the portable refrigerator is favored by people of all ages. However, due to the emerging products, the portable refrigerator on the market has the problems of poor refrigeration effect, easy water accumulation, high noise, easy door opening and closing shaking and the like, so that the portable refrigerator with good refrigeration effect, low noise and good stability is required on the market. Patent CN 212778120U discloses a novel vertical small-size refrigerator, and it utilizes the air-blower to carry refrigerating plant's cold energy to storage space to stir the air in the storage space, make the temperature in it balanced, reach the effect of effective cold storage article, not only can improve refrigeration effect greatly, solved the easy ponding problem of direct-cooling type refrigerator moreover. However, the refrigerator in the patent is a vertical refrigerator, so that the stability of the refrigerator is difficult to ensure in the running process of a vehicle, the refrigerator is only Shan Lengmo, the refrigerator is mainly used for college students, the use scenes such as self-driving tour, long-distance freight cars and the like are ignored, and the market is limited. The vehicle-mounted refrigerator in the prior art has the technical problems that the vehicle-mounted refrigerator is easy to freeze, heat preservation can not be realized during refrigeration, the heat of the compressor can affect the freezing chamber, the refrigeration efficiency is low, and the like, so the invention designs the vehicle-mounted refrigerator and the control method thereof.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the vehicle-mounted refrigerator in the prior art is easy to freeze, so as to provide the vehicle-mounted refrigerator and the control method thereof.
In order to solve the above problems, the present invention provides a vehicle-mounted refrigerator, comprising:
compressor, refrigeration heat exchanger, refrigeration case and first heat exchanger, the compressor the refrigeration heat exchanger with at least part of structure in the first heat exchanger connection formation refrigeration circulation circuit, refrigeration heat exchanger set up in the inside of refrigeration case can be right the inside air current of refrigeration case refrigerates, on-vehicle refrigerator still includes first fan, first fan also set up in the inside of refrigeration case, just first fan with refrigeration heat exchanger sets up relatively, in order can drive or strengthen the interior air current of refrigeration case with heat transfer between the refrigeration heat exchanger.
In some embodiments, the heat exchanger further comprises a second heat exchanger and an incubator, wherein the second heat exchanger is arranged inside the incubator so as to heat and/or preserve heat of the air flow inside the incubator, and the second heat exchanger is also connected to the refrigeration cycle loop.
In some embodiments, the upper end of the incubator is provided with an incubator cover, and the incubator cover can be rotated to open the incubator to form a flip-type structure; the upper end of the refrigeration box is provided with a refrigeration box cover, and the refrigeration box cover can be rotated to open the refrigeration box to form a flip-type structure.
In some embodiments, the vehicle further comprises a compressor case, the compressor is arranged inside the compressor case, and the first heat exchanger is arranged on the compressor case so as to exchange heat between the refrigerant and the outside of the vehicle.
In some embodiments, the compressor case is stacked on top of the incubator, the incubator being located at an upper end of the compressor case; the compressor case and the heat preservation box are formed into an integrated structure; the heat preservation boxes and the refrigerating boxes are connected or arranged at intervals along the horizontal direction.
In some embodiments, a first thermal shield is disposed between the compressor case and the refrigeration case; a second heat insulation piece is arranged between the heat preservation box and the refrigeration box; and a partition piece is arranged between the compressor case and the heat insulation box, and the partition piece is of a heat conduction structure.
In some embodiments, the air conditioner further comprises a second fan and a third fan, wherein the second fan is arranged inside, on the wall surface or outside the compressor case, and is opposite to the first heat exchanger so as to drive or enhance heat exchange between air flow outside the vehicle and the first heat exchanger; the third fan is arranged in the heat insulation box, and the third fan and the second heat exchanger are arranged oppositely, so that heat exchange between air flow in the heat insulation box and the second heat exchanger can be driven or enhanced.
In some embodiments, the system further comprises a first control valve, a first parallel branch and a second control valve, wherein one end of the second heat exchanger can be communicated with the exhaust end of the compressor, the other end of the second heat exchanger can be communicated with one end of the first heat exchanger, and the first control valve is arranged between the second heat exchanger and the compressor or between the second heat exchanger and the first heat exchanger; the first parallel branch is arranged at two ends of the second heat exchanger connected in series with the first control valve in parallel, and the second control valve is arranged on the first parallel branch.
In some embodiments, the system further comprises a throttling device and a temperature acquisition device, wherein the throttling device is arranged between the first heat exchanger and the refrigeration heat exchanger, and the temperature acquisition device is arranged on a refrigerant pipeline between the first heat exchanger and the throttling device.
In some embodiments, the system further comprises a third control valve, a fourth control valve and a second parallel branch, wherein one end of the refrigeration heat exchanger can be communicated with a suction end of the compressor, the other end of the refrigeration heat exchanger can be communicated with the throttling device, and the fourth control valve is arranged between the refrigeration heat exchanger and the compressor or at a position between the refrigeration heat exchanger and the throttling device; the second parallel branch is arranged at two ends of the refrigeration heat exchanger connected in series with the fourth control valve in parallel, and the third control valve is arranged on the second parallel branch.
The invention also provides a control method of the vehicle-mounted refrigerator, which comprises the following steps:
a detection step of detecting a mode of the vehicle-mounted refrigerator and detecting the temperature of the refrigerant acquired by the temperature acquisition device;
judging whether the mode of the vehicle-mounted refrigerator is a refrigeration mode or a heat preservation mode, and judging the relation between the temperature T acquired by the temperature acquisition device and a first preset temperature value T1 or a second preset temperature value T2;
a control step, when the mode of the vehicle-mounted refrigerator is a refrigeration mode, and the temperature T acquired by the temperature acquisition device is smaller than or equal to the first preset temperature value T1, controlling the first heat exchanger to heat, the second heat exchanger not to heat, and the refrigeration heat exchanger to refrigerate; when the mode of the vehicle-mounted refrigerator is a refrigeration mode and the temperature T acquired by the temperature acquisition device is greater than the first preset temperature value T1, controlling the first heat exchanger and the second heat exchanger to perform heating operation, and refrigerating the refrigeration heat exchanger;
when the mode of the vehicle-mounted refrigerator is a heat preservation mode and the temperature T acquired by the temperature acquisition device is smaller than or equal to the second preset temperature value T2, controlling the first heat exchanger and the second heat exchanger to perform heating operation, refrigerating the refrigerating heat exchanger, and simultaneously controlling the second fan to be closed or decelerated; when the mode of the vehicle-mounted refrigerator is a heat preservation mode, and the temperature T acquired by the temperature acquisition device is greater than the second preset temperature value T2, the first heat exchanger and the second heat exchanger are controlled to perform heating operation, the refrigeration heat exchanger is used for refrigeration, and the second fan is controlled to be started or accelerated.
In some embodiments, when the first control valve, the second control valve, the third control valve, and the fourth control valve are included at the same time:
in the control step, when the mode of the vehicle-mounted refrigerator is a refrigeration mode and T is less than or equal to T1, the first control valve is controlled to be switched off, the second control valve is controlled to be switched on, the third control valve is controlled to be switched off, and the fourth control valve is controlled to be switched on; when the mode of the vehicle-mounted refrigerator is a refrigeration mode and T is more than T1, the first control valve is controlled to be connected, the second control valve is disconnected, the third control valve is disconnected, and the fourth control valve is controlled to be connected;
when the mode of the vehicle-mounted refrigerator is a heat preservation mode and T is less than or equal to T2, the first control valve is controlled to be switched on, the second control valve is controlled to be switched off, the third control valve is controlled to be switched off, and the fourth control valve is controlled to be switched on, and meanwhile, the second fan is controlled to be switched off or decelerated; when the mode of the vehicle-mounted refrigerator is a heat preservation mode and T is more than T2, the first control valve is controlled to be switched on, the second control valve is controlled to be switched off, the third control valve is controlled to be switched off, and the fourth control valve is controlled to be switched on and simultaneously the second fan is controlled to be started or accelerated.
In some embodiments, the control step, when the mode of the on-vehicle refrigerator is a cooling mode, controls the compressor to stop when the temperature in the cooling tank is lower than a third preset temperature T3 and the on-vehicle refrigerator needs to stop slowly, and the third control valve is turned on and the fourth control valve is turned off.
In some embodiments, when the temperatures T acquired by the temperature acquisition device within a first preset time T1 are all less than or equal to T1, judging that T is less than or equal to T1; when the temperatures T acquired by the temperature acquisition device within a first preset time T1 are all more than T1, judging that T is more than T1; when the temperatures T acquired by the temperature acquisition device within the second preset time T2 are all less than or equal to T2, judging that T is less than or equal to T2; when the temperatures T acquired by the temperature acquisition device within the second preset time T2 are all more than T2, judging that T is more than T2.
In some embodiments, t1=1 min, and the temperature acquisition device acquires a set of temperature data every 10s within 1 min; t2=1 min, and the temperature acquisition device acquires a group of temperature data every 10s within 1 min; t1=t2=50 ℃ to 60 ℃.
The vehicle-mounted refrigerator and the control method thereof have the following beneficial effects:
1. according to the invention, through the refrigeration heat exchanger arranged in the refrigeration box of the vehicle-mounted refrigerator, the air flow in the refrigeration box can be effectively refrigerated, and through the structure that the first fan is arranged in the refrigeration box of the vehicle-mounted refrigerator, the heat exchange between the air flow in the refrigeration box and the refrigeration heat exchanger can be driven or enhanced, the vehicle-mounted refrigerator adopts the first fan to exchange heat with the refrigeration heat exchanger, cold air can be blown into the whole box, so that the heat exchange in the refrigeration box is more uniform, the consistency of food cooling and heating is ensured, meanwhile, the freezing phenomenon of the refrigeration box can be reduced or stopped, and the problem that the traditional portable refrigerator is easy to freeze is effectively solved (the existing vehicle-mounted refrigerator does not have the structure that the heat exchange is carried out on the refrigeration chamber heat exchanger by the fan);
2. According to the invention, the second heat exchanger is arranged in the heat insulation box and is connected to the refrigeration cycle loop through the arrangement of the heat insulation box and the second heat exchanger, so that the air flow in the heat insulation box can be effectively heated and/or insulated when the refrigerant flows through the second heat exchanger, the multi-functionalization of simultaneous refrigeration and heat insulation (or heating) of the vehicle-mounted refrigerator is realized, and the problem of single function of the portable refrigerator is solved; compared with the existing dual-purpose refrigerator which utilizes electric heating for heating and cooling, the invention utilizes the exhaust of the compressor to supply heat for the heat preservation box, thereby effectively reducing the energy consumption while ensuring the use safety of the refrigerator, and further improving the energy efficiency of the system; because the compressor case, the insulation can are overlapped up and down and are horizontally arranged with the refrigeration box, the space layout in the vehicle-mounted refrigerator is more compact, and the arrangement structure enables the compressor to be arranged at a position far away from the refrigeration box, so that the influence on the refrigeration box can be effectively reduced, the refrigeration heat exchange efficiency is enhanced, and the energy efficiency of the vehicle-mounted refrigerator is further improved.
3. According to the invention, the first heat exchanger and the second heat exchanger are controlled in different modes and at different temperatures before throttling, so that the first heat exchanger can be started preferentially without starting the second heat exchanger of the heat insulation box during refrigeration, and the energy consumption is reduced; when heating (or preserving heat), the first heat exchanger and the second heat exchanger are controlled to be opened, the heat preservation box is heated or preserved through the second heat exchanger, the air in the heat preservation box is heated through the heat of the compressor, when the temperature of the refrigerant before throttling is higher than a second preset value, the heat exchange performance of the whole first heat exchanger and the whole second heat exchanger is insufficient, the heat exchange performance of the first heat exchanger and the second heat exchanger needs to be enhanced, at the moment, the second heat exchanger mainly plays a role of preserving heat and is not suitable for excessively adjusting the second heat exchanger, the operation of the second fan is opened or accelerated, and therefore the heat exchange performance of the first heat exchanger is enhanced; and when the temperature of the refrigerant before throttling is lower than a second preset value, the heat exchange performance of the whole first heat exchanger and the whole second heat exchanger is enough, and the reduction of the rotating speed of the second fan or the closing of the second fan can be considered at the moment, so that the dissipation of the heat energy of the refrigerant is reduced, and the whole energy efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of a vehicle-mounted refrigerator of the present invention;
fig. 2 is a system diagram of the in-vehicle refrigerator of the present invention.
The reference numerals are:
1. a refrigeration box; 2. an insulation box; 31. a first heat insulating member; 32. a second heat insulating member; 4. a compressor; 5. a second heat exchanger; 6. a first heat exchanger; 7. a throttle device; 8. a refrigeration heat exchanger; 9. push-pull handle; 10. a third fan; 11. a first control valve; 12. a second control valve; 13. a third control valve; 14. a fourth control valve; 15. a refrigeration case cover; 16. a thermal insulation box cover; 17. a temperature acquisition device; 18. a compressor case; 19. a partition; 20. a second fan; 30. a first fan; 101. a first parallel branch; 102. and a second parallel branch.
Detailed Description
As shown in fig. 1-2, the present invention provides a vehicle-mounted refrigerator, comprising:
compressor 4, refrigeration heat exchanger 8, refrigeration case 1 and first heat exchanger 6, compressor 4 refrigeration heat exchanger 8 with first heat exchanger 6 connects the at least partial structure in the formation refrigeration circulation circuit, refrigeration heat exchanger 8 set up in the inside of refrigeration case 1 can be right the inside air current of refrigeration case 1 refrigerates, on-vehicle refrigerator still includes first fan 30, first fan 30 also set up in the inside of refrigeration case 1, just first fan 30 with refrigeration heat exchanger 8 sets up relatively, in order to can drive or strengthen the interior air current of refrigeration case 1 with heat transfer between the refrigeration heat exchanger 8.
According to the invention, through the refrigeration heat exchanger arranged in the refrigeration box of the vehicle-mounted refrigerator, the air flow in the refrigeration box can be effectively refrigerated, and through the structure that the first fan is arranged in the refrigeration box of the vehicle-mounted refrigerator, the heat exchange between the air flow in the refrigeration box and the refrigeration heat exchanger can be driven or enhanced, the vehicle-mounted refrigerator adopts the first fan to exchange heat with the refrigeration heat exchanger, cold air can be blown into the whole box, so that the heat exchange in the refrigeration box is more uniform, the consistency of food cooling and heating is ensured, meanwhile, the freezing phenomenon of the refrigeration box can be reduced or stopped, and the problem that the traditional portable refrigerator is easy to freeze is effectively solved (the existing vehicle-mounted refrigerator does not have the structure that the fan is used for exchanging heat with the refrigeration chamber heat exchanger). The refrigerator in the prior art is frozen because the evaporating coil is adopted for direct heat exchange, and the cold energy is concentrated near the coil (the freezing usually only occurs in the freezing chamber (namely the refrigerating box)), and the fan is adopted for heat exchange on the refrigerating heat exchanger, so that the cold air can be blown into the whole box, the temperature is more uniform, and the freezing condition is effectively avoided.
The invention forms a complete portable dual-purpose vehicle-mounted refrigerator system for cooling and heating by adopting a refrigerating box, an insulation box, a heat insulating piece (heat insulating foam), a compressor, a refrigeration heat exchanger, a first heat exchanger, a throttling device, a second heat exchanger, a push-pull handle, a first fan, an electromagnetic valve, a refrigerating box cover, an insulation box cover, a second fan, a third fan and pipelines thereof, wherein control valves in the system are preferably normally open electromagnetic valves, namely, the power-on and the power-off are conducted.
In some embodiments, the heat-preserving device further comprises a second heat exchanger 5 and an incubator 2, wherein the second heat exchanger 5 is arranged inside the incubator 2 to heat and/or preserve heat of the air flow inside the incubator 2, and the second heat exchanger 5 is also connected to the refrigeration cycle. The invention also sets the second heat exchanger in the heat preservation box and connects the second heat exchanger to the refrigeration cycle loop through the setting of the heat preservation box and the setting of the second heat exchanger, which can effectively heat and/or preserve heat for the air flow in the heat preservation box when the refrigerant flows through the second heat exchanger, thereby realizing the multifunction of simultaneously refrigerating and preserving (or heating) of the vehicle-mounted refrigerator and solving the problem of single function of the portable refrigerator.
In some embodiments, the upper end of the incubator 2 is provided with an incubator cover 16, and the incubator cover 16 can rotate to open the incubator 2 to form a flip-type structure; the upper end of the refrigeration box 1 is provided with a refrigeration box cover 15, and the refrigeration box cover 15 can rotate to open the refrigeration box 1 to form a flip-type structure. Through all setting up the case lid with insulation can and refrigeration case upper end, all adopt the structure of the mode opening box of upset, utilized the space more rationally in domestic air conditioner push-pull structure, reduced and used area for the structure is compacter.
Fig. 1 is a schematic diagram of a vehicle-mounted refrigerator, wherein a refrigerating box 1 (or called a refrigerating box) and an insulating box 2 are distributed left and right, and are independently provided with an upper cover, a refrigerating box cover 15 and an insulating box cover 16, the design can ensure that the bottom area is large, the gravity center is low, and the stability during the running process of a vehicle or when the ice box cover is opened (the horizontal design can enlarge the bottom area, and a compressor is arranged at the bottom to reduce the gravity center); the upper cover of refrigeration case and insulation can both be opened alone, reduces the cold and warm case and influences each other, is flip formula design simultaneously, compares in domestic air conditioner push-and-pull type can rational utilization occupation of land space, more closely uses the scene. The compressor is placed at the bottom of the compressor box below the heat preservation box 2, firstly, based on the principle that the density of hot air is low and heat is transferred upwards, the heat generated by the compressor in the running process can better preserve the heat of the heat preservation box 2, and the influence on the refrigerating box 1 is reduced to the greatest extent; secondly, the service time based on the portable refrigerator refrigerating mode is far longer than that of the heat preservation mode, so that the compressor is arranged below the heat preservation box, and the volume of the refrigerating box can be ensured.
In some embodiments, the vehicle further comprises a compressor case 18, the compressor 4 is disposed inside the compressor case 18, and the first heat exchanger 6 is disposed on the compressor case 18 to exchange heat between the refrigerant and the outside of the vehicle. According to the invention, the compressor can be accommodated in the compressor through the arrangement of the compressor case, and the first heat exchanger is arranged on the compressor case, so that the first heat exchanger is effectively arranged and is used for exchanging heat with the air in the space outside the vehicle, and therefore, the heat in the refrigeration case can be effectively sucked out and discharged to the space outside the vehicle through the first heat exchanger, and the effective operation of the refrigeration function of the refrigerator is ensured.
In some embodiments, the compressor case 18 is stacked on top of the incubator 2, and the incubator 2 is located at the upper end of the compressor case 18; the compressor case 18 and the heat preservation box 2 are formed into an integral structure; the heat preservation boxes 2 and the refrigerating boxes 1 are connected or arranged at intervals along the horizontal direction.
Compared with the existing dual-purpose refrigerator which utilizes electric heating to supply heat, the invention utilizes the exhaust of the compressor to supply heat for the heat preservation box, thereby effectively reducing energy consumption and improving the energy efficiency of the system while ensuring the use safety of the refrigerator. Because the compressor case, the insulation can are overlapped up and down and are horizontally arranged with the refrigeration box, the space layout in the vehicle-mounted refrigerator is more compact, and the arrangement structure enables the compressor to be arranged at a position far away from the refrigeration box, so that the influence on the refrigeration box can be effectively reduced, the refrigeration heat exchange efficiency is enhanced, and the energy efficiency of the vehicle-mounted refrigerator is further improved.
In some embodiments, a first thermal insulator 31 is disposed between the compressor case 18 and the refrigeration case 1; a second heat insulation member 32 is arranged between the heat insulation box 2 and the refrigeration box 1; a partition piece 19 is arranged between the compressor case 18 and the heat insulation box 2, and the partition piece 19 is of a heat conduction structure. According to the invention, the first heat insulation piece arranged between the compressor case and the refrigeration case can effectively insulate heat generated by the compressor from air temperature change in the refrigeration case, so that continuous and effective refrigeration in the refrigeration case is ensured, and the energy efficiency is improved; the second heat insulation piece between the heat insulation box and the refrigeration box can also effectively insulate heat between the heat insulation box and the refrigeration box, so that continuous and effective refrigeration in the refrigeration box is ensured, heat in the heat insulation box is not lost, and the energy efficiency is improved; the heat-conducting partition piece is arranged between the compressor box and the heat-insulating box, so that the upper heat-insulating box and the lower heat-insulating box can be physically separated from the compressor box, but heat generated by the compressor can be transferred to the heat-insulating box, the heating effect on the heat-insulating box is improved, and the energy efficiency of a system is improved.
In some embodiments, the air conditioner further comprises a second fan 20 and a third fan 10, wherein the second fan 20 is disposed inside, on a wall surface or outside the compressor case 18 (wherein inside refers to a space inside the compressor case and not connected with the inner wall surface, or on a bottom plate, and outside refers to a space outside the compressor case and not connected with the outer wall surface, and the wall surface comprises the inner wall surface and the outer wall surface, that is, the second fan may be disposed on the inner wall surface or the outer wall surface), and the second fan 20 is disposed opposite to the first heat exchanger 6 so as to drive or enhance heat exchange between an air flow outside the vehicle and the first heat exchanger 6; the third fan 10 is disposed inside the heat insulation box 2, and the third fan 10 and the second heat exchanger 5 are disposed opposite to each other, so as to drive or enhance heat exchange between the air flow in the heat insulation box 2 and the second heat exchanger 5. The invention can also act on the first heat exchanger through the second fan, so that the heat exchange efficiency of the refrigerant between the first heat exchanger and the outside of the vehicle can be enhanced; the third fan acts on the second heat exchanger, so that the heat exchange efficiency of the refrigerant between the second heat exchanger and the interior of the heat insulation box can be enhanced.
In some embodiments, the system further comprises a first control valve 11, a first parallel branch 101 and a second control valve 12, wherein one end of the second heat exchanger 5 can be communicated with the exhaust end of the compressor 4, the other end can be communicated with one end of the first heat exchanger 6, and the first control valve 11 is arranged between the second heat exchanger 5 and the compressor 4 or between the second heat exchanger 5 and the first heat exchanger 6; the first parallel branch 101 is arranged at two ends of the second heat exchanger 5 connected in series with the first control valve 11 in parallel, and the second control valve 12 is arranged on the first parallel branch 101.
The first parallel branch can be connected with the second heat exchanger in parallel after being connected with the first control valve in series through the arrangement of the first control valve, so that whether the second heat exchanger is short-circuited or not can be controlled according to the requirement, namely, the first control valve is opened when the second heat exchanger is required to exchange heat, the first control valve is closed and the second control valve is opened at the same time when the second heat exchanger is not required to exchange heat, the second heat exchanger in the heat preservation box can be effectively controlled according to different operation modes and other conditions such as temperature conditions, and the high-energy efficiency refrigeration and heat preservation of the vehicle-mounted refrigerator are guaranteed.
In some embodiments, the heat exchanger further comprises a throttling device 7 and a temperature collecting device 17, wherein the throttling device 7 is arranged between the first heat exchanger 6 and the refrigeration heat exchanger 8, and the temperature collecting device 17 is arranged on a refrigerant pipeline between the first heat exchanger 6 and the throttling device 7. The invention can also throttle and decompress the refrigerant passing through the first heat exchanger through the throttling device, can effectively detect the temperature of the refrigerant at the outlet of the first heat exchanger through the temperature acquisition device, can effectively and accurately judge whether the refrigerant is fully condensed and released by the height of the temperature, if so, the second heat exchanger 5 is considered not to be opened, thus, the energy can be effectively saved, the energy efficiency is improved, if not, the second heat exchanger is considered to be opened, thus, the refrigerant can be fully condensed and released, the sufficient refrigeration in the refrigerating heat exchanger 8 is ensured, and the sufficient refrigerating capacity is ensured. Therefore, the structure of the invention can detect and obtain whether the refrigerant is sufficiently condensed, and selectively open or close the second heat exchanger according to whether the refrigerant is sufficiently condensed, so that the energy consumption can be effectively reduced on the basis of ensuring the sufficient refrigerating capacity of the refrigerating heat exchanger, and the energy efficiency of the whole system is improved.
In some embodiments, the system further comprises a third control valve 13, a fourth control valve 14 and a second parallel branch 102, wherein one end of the refrigeration heat exchanger 8 can be communicated with the suction end of the compressor 4, the other end can be communicated with the throttling device 7, and the fourth control valve 14 is arranged between the refrigeration heat exchanger 8 and the compressor 4 or between the refrigeration heat exchanger 8 and the throttling device 7; the second parallel branch 102 is disposed in parallel at two ends of the refrigeration heat exchanger 8 connected in series with the fourth control valve 14, and the third control valve 13 is disposed on the second parallel branch 102.
According to the invention, through the arrangement of the third control valve, the fourth control valve and the second parallel branch, the second parallel branch can connect the refrigeration heat exchanger and the fourth control valve in parallel after being connected in series, so that whether the refrigeration heat exchanger is short-circuited or not can be controlled according to the needs, namely, the fourth control valve is opened when the refrigeration heat exchanger is required to exchange heat, the fourth control valve is closed when the refrigeration heat exchanger is not required to exchange heat, and the third control valve is opened at the same time, preferably, the refrigeration heat exchanger can be switched on to operate in a normal refrigeration mode or a heat preservation mode, and the second parallel branch can be switched on and the refrigeration heat exchanger can be switched off when the temperature in the refrigeration box reaches the required temperature and the system is required to be stopped slowly.
The invention also provides a control method of the vehicle-mounted refrigerator, which comprises the following steps:
a detection step of detecting a mode of the vehicle-mounted refrigerator and detecting the temperature of the refrigerant acquired by the temperature acquisition device;
judging whether the mode of the vehicle-mounted refrigerator is a refrigeration mode or a heat preservation mode, and judging the relation between the temperature T acquired by the temperature acquisition device and a first preset temperature value T1 or a second preset temperature value T2;
a control step, when the mode of the vehicle-mounted refrigerator is a refrigeration mode, and the temperature T acquired by the temperature acquisition device is smaller than or equal to the first preset temperature value T1, controlling the first heat exchanger 6 to heat, the second heat exchanger 5 not to heat, and the refrigeration heat exchanger 8 to refrigerate; when the mode of the vehicle-mounted refrigerator is a refrigeration mode and the temperature T acquired by the temperature acquisition device is greater than the first preset temperature value T1, controlling the first heat exchanger 6 and the second heat exchanger 5 to perform heating operation, and refrigerating the refrigeration heat exchanger 8;
when the mode of the vehicle-mounted refrigerator is a heat preservation mode and the temperature T acquired by the temperature acquisition device is smaller than or equal to the second preset temperature value T2, controlling the first heat exchanger 6 and the second heat exchanger 5 to perform heating operation, refrigerating the refrigeration heat exchanger 8, and simultaneously controlling the second fan 20 to be turned off or decelerated; when the mode of the vehicle-mounted refrigerator is a heat preservation mode, and the temperature T acquired by the temperature acquisition device is greater than the second preset temperature value T2, the first heat exchanger 6 and the second heat exchanger 5 are controlled to perform heating operation, the refrigeration heat exchanger 8 is controlled to perform refrigeration, and the second fan 20 is controlled to be started or accelerated.
According to the control method, through the refrigeration heat exchanger, the first heat exchanger and the second heat exchanger which are in different operation modes and have different temperatures before throttling, the first heat exchanger can be firstly opened without opening the second heat exchanger of the heat insulation box during refrigeration, so that the energy consumption is reduced, but the second heat exchanger is selectively opened when the temperature of the refrigerant before throttling is higher than a first preset value, the heat exchange effect on the refrigerant can be enhanced through the second heat exchanger, the heat of the refrigerant is ensured to be fully released or dissipated, so that sufficient cold energy providing conditions are provided for entering the refrigeration heat exchanger, and correspondingly, the second heat exchanger is selectively closed when the temperature of the refrigerant before throttling is lower than the first preset value, so that the state of the refrigerant is enough for refrigerating the refrigeration heat exchanger at the moment, the second heat exchanger is closed, the energy consumption is effectively reduced, and the energy efficiency of the vehicle-mounted refrigerator is improved; when heating (or preserving heat), the first heat exchanger and the second heat exchanger are controlled to be opened, the heat preservation box is heated or preserved through the second heat exchanger, the air in the heat preservation box is heated through the heat of the compressor, when the temperature of the refrigerant before throttling is higher than a second preset value, the heat exchange performance of the whole first heat exchanger and the whole second heat exchanger is insufficient, the heat exchange performance of the first heat exchanger and the second heat exchanger needs to be enhanced, at the moment, the second heat exchanger mainly plays a role of preserving heat and is not suitable for excessively adjusting the second heat exchanger, the operation of the second fan is opened or accelerated, and therefore the heat exchange performance of the first heat exchanger is enhanced; and when the temperature of the refrigerant before throttling is lower than a second preset value, the heat exchange performance of the whole first heat exchanger and the whole second heat exchanger is enough, and the reduction of the rotating speed of the second fan or the closing of the second fan can be considered at the moment, so that the dissipation of the heat energy of the refrigerant is reduced, and the whole energy efficiency is improved.
Therefore, the second heat exchanger 5 in the incubator is disconnected when the refrigerant is fully condensed in the refrigeration mode, the energy consumption is reduced, the energy efficiency of the system is improved, the second heat exchanger 5 is connected when the refrigerant is insufficiently condensed in the refrigeration mode, the heat release effect on the refrigerant in condensation is enhanced through the second heat exchanger 5 and the first heat exchanger 6, and the sufficient and full refrigerating capacity in the refrigeration box is ensured; the refrigeration effect is ensured and the energy efficiency of the system is improved; the second and first heat exchangers work simultaneously in the heat preservation mode, the rotating speed of the second fan is closed or reduced when the refrigerant is condensed sufficiently, the energy consumption is reduced, the energy efficiency of the system is improved, and the second fan 20 is opened or accelerated when the refrigerant is condensed insufficiently, so that the heat release effect of condensation is enhanced, and the sufficient and full refrigerating capacity in the refrigerating box is ensured. Therefore, the invention can effectively realize the purpose of ensuring the sufficient refrigerating capacity of the refrigerating box and improving the energy efficiency of the whole system at the same time under the refrigerating mode and the heat preservation mode.
In some embodiments, when the first control valve 11, the second control valve 12, the third control valve 13, and the fourth control valve 14 are included at the same time:
in the control step, when the mode of the vehicle-mounted refrigerator is a refrigeration mode and T is less than or equal to T1, the first control valve 11 is controlled to be switched off, the second control valve 12 is controlled to be switched on, the third control valve 13 is controlled to be switched off, and the fourth control valve 14 is controlled to be switched on; when the mode of the vehicle-mounted refrigerator is a refrigeration mode and T is more than T1, the first control valve 11 is controlled to be switched on, the second control valve 12 is switched off, the third control valve 13 is switched off, and the fourth control valve 14 is controlled to be switched on;
When the mode of the vehicle-mounted refrigerator is a heat preservation mode and T is less than or equal to T2, the first control valve 11 is controlled to be switched on, the second control valve 12 is switched off, the third control valve 13 is switched off, the fourth control valve 14 is switched on, and the second fan 20 is controlled to be switched off or decelerated; when the mode of the vehicle-mounted refrigerator is a heat preservation mode and T is more than T2, the first control valve 11 is controlled to be switched on, the second control valve 12 is controlled to be switched off, the third control valve 13 is switched off, the fourth control valve 14 is switched on, and the second fan 20 is controlled to be started or accelerated.
The control mode of the four control valves is controlled according to the temperature of the refrigerant before throttling in the refrigeration mode or the heat preservation mode, so that the second heat exchanger 5 in the heat preservation box is disconnected when the refrigerant is fully condensed in the refrigeration mode, the energy consumption is reduced, the energy efficiency of the system is improved, the second heat exchanger 5 is simultaneously connected when the refrigerant is not fully condensed in the refrigeration mode, the heat release effect of condensation on the refrigerant is enhanced, and the sufficient and full refrigerating capacity in the refrigeration box is ensured; the refrigeration effect is ensured and the energy efficiency of the system is improved; the second and first heat exchangers work simultaneously in the heat preservation mode, the rotating speed of the second fan is closed or reduced when the refrigerant is condensed sufficiently, the energy consumption is reduced, the energy efficiency of the system is improved, and the second fan 20 is opened or accelerated when the refrigerant is condensed insufficiently, so that the heat release effect of condensation is enhanced, and the sufficient and full refrigerating capacity in the refrigerating box is ensured. Therefore, the invention can effectively realize the purpose of ensuring the sufficient refrigerating capacity of the refrigerating box and improving the energy efficiency of the whole system at the same time under the refrigerating mode and the heat preservation mode.
In some embodiments, in the control step, when the mode of the on-vehicle refrigerator is a cooling mode, if the temperature in the cooling tank is lower than a third preset temperature T3, and the on-vehicle refrigerator needs to be slowly stopped, the compressor 4 is controlled to stop, the third control valve 13 is turned on, and the fourth control valve 14 is turned off. The invention can ensure that the temperature in the refrigeration box meets the requirement and can normally and stably finish the stop when the compressor is stopped slowly through the arrangement of the second parallel branch, thereby effectively reducing the energy consumption and improving the energy efficiency of the system while ensuring the enough refrigeration capacity of the refrigeration box.
In some embodiments, when the temperatures T acquired by the temperature acquisition device within a first preset time T1 are all less than or equal to T1, judging that T is less than or equal to T1; when the temperatures T acquired by the temperature acquisition device within a first preset time T1 are all more than T1, judging that T is more than T1; when the temperatures T acquired by the temperature acquisition device within the second preset time T2 are all less than or equal to T2, judging that T is less than or equal to T2; when the temperatures T acquired by the temperature acquisition device within the second preset time T2 are all more than T2, judging that T is more than T2. The method is a specific judgment mode of the size relation between T and T1 and between T and T2, the inequality can be judged to be met if the inequality is met after detection for a plurality of times within a certain time, the entering of the inequality is ensured to be in a stable temperature state instead of an unstable fluctuation state, and at the moment, the system is more stable and the control precision is higher.
In some embodiments, t1=1 min, and the temperature acquisition device acquires a set of temperature data every 10s within 1 min; t2=1 min, and the temperature acquisition device acquires a group of temperature data every 10s within 1 min; t1=t2=50 ℃ to 60 ℃. This is the preferred duration of a certain time of the invention and the preferred range of values for the two preset temperatures.
Fig. 2 is a system diagram of the in-vehicle refrigerator of the present invention.
Principle of refrigeration: the second control valve 12 is electrified and sucked to be conducted in the initial stage, the first control valve 11 is powered off and disconnected, the high-temperature and high-pressure gaseous refrigerant coming out of the compressor directly enters the first heat exchanger 6 to exchange heat instead of passing through the second heat exchanger 5, the low-temperature and high-pressure liquid refrigerant enters the throttling device 7 to be throttled and depressurized after coming out, the low-pressure and low-temperature liquid refrigerant enters the refrigeration heat exchanger 8 to absorb heat, the fourth control valve 14 is in the sucking to be conducted at the moment, the third control valve 13 is in the disconnected state, and the gaseous refrigerant enters the compressor again to be compressed after the heat exchange is completed. In the operation process of the refrigeration mode, the temperature acquisition device 17 continuously acquires the temperature of the refrigerant after heat exchange by the first heat exchanger 6, if the temperature acquired in 1min (one group is acquired every 10 s) is larger than the limiting temperature (50-60 ℃ is generally set), the second control valve 12 is powered off and disconnected, the first control valve 11 is powered on and powered on, the second heat exchanger 5 is involved in heat exchange (the second heat exchanger 5 is not started first in refrigeration, the condition indicates that the heat exchange capacity of the first heat exchanger 6 is insufficient when the heat exchange is carried out singly, the temperature of the refrigerant is too high, and when the heat exchange capacity of the first heat exchanger 6 is insufficient to sufficiently condense and release heat of the refrigerant, the second heat exchanger 5 is started to ensure the heat exchange performance of the refrigeration heat exchanger 8), the freezing chamber can be ensured to reach the set temperature value until the temperature acquired in 1min (one group is acquired every 10 s) by the temperature acquisition device 17 is smaller than the limiting temperature (50-60 ℃ is generally set), and the operation state of the initial stage is restored.
Heating principle: the first control valve 11 is powered on and is closed, the second control valve 12 is powered off and is disconnected, high-temperature and high-pressure exhaust gas of the compressor enters the heat insulation box to exchange heat with the second heat exchanger 5 and then enters the first heat exchanger 6, if the temperature acquisition device 17 acquires that the temperature is higher than a limiting temperature (generally set to 50-60 ℃) within 1min (one group is acquired every 10 s), the second fan 20 (namely a heat exchange fan) is powered on, rotates and accelerates to dissipate heat, otherwise, the second fan does not operate, high-pressure normal-temperature liquid refrigerant coming out of the first heat exchanger 6 enters the throttling device 7 to throttle and reduce pressure, at the moment, the fourth control valve 14 is powered on and closed, the third control valve 13 is powered off (when refrigeration is performed, if the refrigeration box reaches the set temperature, and when the system needs slow shutdown, the third control valve 13 is closed, the fourth control valve 14 is disconnected), and low-temperature refrigerant enters the refrigeration heat exchanger 8 and then enters the compressor.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (15)

1. A vehicle-mounted refrigerator, characterized in that: comprising the following steps:
compressor (4), refrigeration heat exchanger (8), refrigeration case (1) and first heat exchanger (6), compressor (4) refrigeration heat exchanger (8) with at least part of structure in the formation refrigeration cycle return circuit is connected to first heat exchanger (6), refrigeration heat exchanger (8) set up in the inside of refrigeration case (1) can be right the inside air current of refrigeration case (1) refrigerates, on-vehicle refrigerator still includes first fan (30), first fan (30) also set up in the inside of refrigeration case (1), just first fan (30) with refrigeration heat exchanger (8) set up relatively, so as to drive or strengthen the interior air current of refrigeration case (1) with heat transfer between refrigeration heat exchanger (8).
2. The vehicle-mounted refrigerator according to claim 1, wherein:
the heat-insulating box further comprises a second heat exchanger (5) and an insulating box (2), wherein the second heat exchanger (5) is arranged in the insulating box (2) so as to heat and/or insulate the air flow in the insulating box (2), and the second heat exchanger (5) is also connected to the refrigerating circulation loop.
3. The vehicle-mounted refrigerator according to claim 2, wherein:
the upper end of the heat preservation box (2) is provided with a heat preservation box cover (16), and the heat preservation box cover (16) can rotate to open the heat preservation box (2) to form a flip-type structure; the upper end of the refrigerating box (1) is provided with a refrigerating box cover (15), and the refrigerating box cover (15) can be rotated to open the refrigerating box (1) to form a flip-type structure.
4. The vehicle-mounted refrigerator according to claim 2 or 3, wherein:
the automobile air conditioner further comprises a compressor box (18), the compressor (4) is arranged inside the compressor box (18), and the first heat exchanger (6) is arranged on the compressor box (18) so as to exchange heat between the refrigerant and the outside of the automobile.
5. The vehicle-mounted refrigerator according to claim 4, wherein:
the compressor box (18) is overlapped with the heat preservation box (2) up and down, and the heat preservation box (2) is positioned at the upper end of the compressor box (18); the compressor case (18) and the heat preservation case (2) form an integrated structure; the heat preservation boxes (2) and the refrigerating boxes (1) are connected or arranged at intervals along the horizontal direction.
6. The vehicle-mounted refrigerator according to claim 5, wherein:
a first heat insulation piece (31) is arranged between the compressor case (18) and the refrigerating case (1); a second heat insulation piece (32) is arranged between the heat insulation box (2) and the refrigeration box (1); a partition piece (19) is arranged between the compressor case (18) and the heat insulation case (2), and the partition piece (19) is of a heat conduction structure.
7. The vehicle-mounted refrigerator according to any one of claims 4 to 6, wherein:
the air conditioner further comprises a second fan (20) and a third fan (10), wherein the second fan (20) is arranged in the compressor case (18), on the wall surface or outside, and the second fan (20) and the first heat exchanger (6) are oppositely arranged so as to drive or enhance heat exchange between air flow outside the vehicle and the first heat exchanger (6); the third fan (10) is arranged in the heat insulation box (2), and the third fan (10) and the second heat exchanger (5) are arranged oppositely, so that heat exchange between air flow in the heat insulation box (2) and the second heat exchanger (5) can be driven or enhanced.
8. The vehicle-mounted refrigerator according to claim 7, wherein:
the system further comprises a first control valve (11), a first parallel branch (101) and a second control valve (12), wherein one end of the second heat exchanger (5) can be communicated with the exhaust end of the compressor (4), the other end of the second heat exchanger can be communicated with one end of the first heat exchanger (6), and the first control valve (11) is arranged between the second heat exchanger (5) and the compressor (4) or between the second heat exchanger (5) and the first heat exchanger (6); the first parallel branch (101) is arranged at two ends of the second heat exchanger (5) connected in series with the first control valve (11) in parallel, and the second control valve (12) is arranged on the first parallel branch (101).
9. The vehicle-mounted refrigerator according to claim 8, wherein:
still include throttling arrangement (7) and temperature acquisition device (17), throttling arrangement (7) set up first heat exchanger (6) with between refrigeration heat exchanger (8), temperature acquisition device (17) set up first heat exchanger (6) with on the refrigerant pipeline between throttling arrangement (7).
10. The vehicle-mounted refrigerator according to claim 9, wherein:
the system further comprises a third control valve (13), a fourth control valve (14) and a second parallel branch (102), wherein one end of the refrigeration heat exchanger (8) can be communicated with the air suction end of the compressor (4), the other end of the refrigeration heat exchanger can be communicated with the throttling device (7), and the fourth control valve (14) is arranged between the refrigeration heat exchanger (8) and the compressor (4) or between the refrigeration heat exchanger (8) and the throttling device (7); the second parallel branch (102) is arranged at two ends of the refrigeration heat exchanger (8) connected in series with the fourth control valve (14) in parallel, and the third control valve (13) is arranged on the second parallel branch (102).
11. The control method of the in-vehicle refrigerator as claimed in any one of claims 7 to 10, wherein: comprising the following steps:
a detection step of detecting a mode of the vehicle-mounted refrigerator and detecting the temperature of the refrigerant acquired by the temperature acquisition device;
judging whether the mode of the vehicle-mounted refrigerator is a refrigeration mode or a heat preservation mode, and judging the relation between the temperature T acquired by the temperature acquisition device and a first preset temperature value T1 or a second preset temperature value T2;
a control step of controlling the first heat exchanger (6) to heat and controlling the second heat exchanger (5) not to heat when the mode of the vehicle-mounted refrigerator is a refrigeration mode and the temperature T acquired by the temperature acquisition device is smaller than or equal to the first preset temperature value T1, and refrigerating the refrigeration heat exchanger (8); when the mode of the vehicle-mounted refrigerator is a refrigeration mode and the temperature T acquired by the temperature acquisition device is greater than the first preset temperature value T1, controlling the first heat exchanger (6) and the second heat exchanger (5) to perform heating operation, and refrigerating the refrigeration heat exchanger (8);
when the mode of the vehicle-mounted refrigerator is a heat preservation mode and the temperature T acquired by the temperature acquisition device is smaller than or equal to the second preset temperature value T2, controlling the first heat exchanger (6) and the second heat exchanger (5) to perform heating operation, refrigerating the refrigerating heat exchanger (8), and simultaneously controlling the second fan (20) to be turned off or decelerated; when the mode of the vehicle-mounted refrigerator is a heat preservation mode, and the temperature T acquired by the temperature acquisition device is larger than the second preset temperature value T2, the first heat exchanger (6) and the second heat exchanger (5) are controlled to perform heating operation, the refrigeration heat exchanger (8) is used for refrigerating, and the second fan (20) is controlled to be started or accelerated.
12. The control method according to claim 11, characterized in that:
when the first control valve (11), the second control valve (12), the third control valve (13) and the fourth control valve (14) are included at the same time:
in the control step, when the mode of the vehicle-mounted refrigerator is a refrigeration mode and T is less than or equal to T1, the first control valve (11) is controlled to be switched off, the second control valve (12) is switched on, the third control valve (13) is switched off, and the fourth control valve (14) is switched on; when the mode of the vehicle-mounted refrigerator is a refrigeration mode and T is more than T1, the first control valve (11) is controlled to be switched on, the second control valve (12) is switched off, the third control valve (13) is switched off, and the fourth control valve (14) is controlled to be switched on;
when the mode of the vehicle-mounted refrigerator is a heat preservation mode and T is less than or equal to T2, the first control valve (11) is controlled to be switched on, the second control valve (12) is switched off, the third control valve (13) is switched off, the fourth control valve (14) is switched on, and meanwhile the second fan (20) is controlled to be switched off or decelerated; when the mode of the vehicle-mounted refrigerator is a heat preservation mode and T is more than T2, the first control valve (11) is controlled to be switched on, the second control valve (12) is switched off, the third control valve (13) is switched off, the fourth control valve (14) is switched on, and meanwhile the second fan (20) is controlled to be started or accelerated.
13. The control method according to claim 12, characterized in that:
and a control step, when the mode of the vehicle-mounted refrigerator is a refrigeration mode, if the temperature in the refrigeration box is lower than a third preset temperature T3, and the vehicle-mounted refrigerator needs to be slowly stopped, the compressor (4) is controlled to stop, the third control valve (13) is connected, and the fourth control valve (14) is disconnected.
14. The control method according to claim 12, characterized in that:
when the temperatures T acquired by the temperature acquisition device within a first preset time T1 are all less than or equal to T1, judging that T is less than or equal to T1; when the temperatures T acquired by the temperature acquisition device within a first preset time T1 are all more than T1, judging that T is more than T1; when the temperatures T acquired by the temperature acquisition device within the second preset time T2 are all less than or equal to T2, judging that T is less than or equal to T2; when the temperatures T acquired by the temperature acquisition device within the second preset time T2 are all more than T2, judging that T is more than T2.
15. The control method according to claim 14, characterized in that:
t1=1 min, and the temperature acquisition device acquires a group of temperature data every 10s within 1 min; t2=1 min, and the temperature acquisition device acquires a group of temperature data every 10s within 1 min; t1=t2=50 ℃ to 60 ℃.
CN202310613998.1A 2023-05-26 2023-05-26 Vehicle-mounted refrigerator and control method thereof Pending CN116558183A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310613998.1A CN116558183A (en) 2023-05-26 2023-05-26 Vehicle-mounted refrigerator and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310613998.1A CN116558183A (en) 2023-05-26 2023-05-26 Vehicle-mounted refrigerator and control method thereof

Publications (1)

Publication Number Publication Date
CN116558183A true CN116558183A (en) 2023-08-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310613998.1A Pending CN116558183A (en) 2023-05-26 2023-05-26 Vehicle-mounted refrigerator and control method thereof

Country Status (1)

Country Link
CN (1) CN116558183A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116839284A (en) * 2023-08-29 2023-10-03 江苏格林电器有限公司 Refrigerating system and refrigerating method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116839284A (en) * 2023-08-29 2023-10-03 江苏格林电器有限公司 Refrigerating system and refrigerating method thereof
CN116839284B (en) * 2023-08-29 2023-11-21 江苏格林电器有限公司 Refrigerating system and refrigerating method thereof

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