Vehicle-mounted refrigerator with cold storage function

Abstract

A kind of car technology field's car refrigerator with cold storage function, including refrigerator shell, inner container heat preservation board, inner container, cold storage evaporator module, refrigerator temperature control system, drawer;Inner container is nested in refrigerator shell, inner container heat preservation board is arranged between refrigerator shell, inner container;The partition of inside inner container divides into two main cavities, one is used to place cold storage evaporator module, one is used to place drawer;Refrigerator temperature control system includes refrigerator temperature control fan and storage room temperature sensor, refrigerator temperature control fan is arranged on the inside partition of inner container, the temperature sensing package of storage room temperature sensor is arranged at the air outlet of refrigerator temperature control fan.The present application does not include compressor and condenser components, but is integrated in the whole vehicle thermal management system, uses the compressor and condenser in the whole vehicle thermal management system.In working process, the cold quantity generated by evaporator can be stored in phase-change cold storage material, and the cold quantity is released in the air flowing into the refrigerator storage room by cold storage agent container shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automotive technology, and particularly to a vehicle-mounted refrigerator with a cold storage function, in which a compressor and a condenser are integrated into a whole vehicle thermal management system. BACKGROUND

[0002] At present, most vehicle-mounted refrigerators have independent refrigeration systems, such as independent compression refrigeration systems or semiconductor refrigeration systems. The above-mentioned independent refrigeration systems include a compressor, a condenser component, and many parts, which have a large structure and result in a small storage room volume of the refrigerator. Similarly, the above-mentioned independent refrigeration systems are limited by the size of the vehicle interior space and cannot use a large-power refrigeration system, so the refrigeration power of the refrigerator is small, the cooling time is long, and the user feels that the vehicle-mounted refrigerator is slow in refrigeration and has a small storage space. At present, there are also vehicle-mounted refrigerators integrated into a whole vehicle thermal management system, which do not use a cold storage function. Each time the vehicle-mounted refrigerator works, the compressor of the whole vehicle thermal management system must be started, which causes the compressor to need frequent start-stop and has a great impact on the service life of the compressor. In addition, the load change of the air conditioner box or the battery cooler in the whole vehicle thermal management system will cause the change of the evaporation pressure or temperature of the whole vehicle thermal management system, thereby causing the temperature fluctuation in the refrigerator. In addition, most current vehicle-mounted refrigerators use polyurethane foaming material as thermal insulation material. In order to achieve the thermal insulation effect, the thickness of the thermal insulation layer is relatively thick, which results in a small internal storage space. However, there is no good patent technology in the prior art. SUMMARY

[0003] The present application aims at the deficiencies of the prior art and provides a vehicle-mounted refrigerator with a cold storage function. The refrigerator part does not include a compressor and a condenser component, but is integrated into a whole vehicle thermal management system, and uses the compressor and the condenser in the whole vehicle thermal management system. The vehicle-mounted refrigerator of the present application uses an evaporator module with a cold storage function. The evaporator module has phase change cold storage material that can store cold energy. During the working process, the cold energy generated by the evaporator can be stored in the phase change cold storage material, and the cold energy is released in the air flowing into the refrigerator storage room through the cold storage agent container shell made of easy heat conduction material.

[0004] The application is realized by the following technical scheme, and the application comprises a refrigerator shell, an inner container heat preservation plate, an inner container, a cold storage evaporator module, a refrigerator temperature control system and a drawer; the inner container is nested in the refrigerator shell, and the inner container heat preservation plate is arranged between the refrigerator shell and the inner container; the inner container is internally provided with a partition plate, the partition plate divides the inner container into two main cavities, one cavity is used for placing the cold storage evaporator module, and the other cavity is used for placing the drawer; the refrigerator temperature control system comprises a refrigerator temperature control fan and a storage chamber temperature sensor, the refrigerator temperature control fan is arranged on the internal partition plate of the inner container, and is used for pumping air in the drawer into an airflow channel around the cold storage evaporator module; the temperature sensing bag of the storage chamber temperature sensor is arranged at the air outlet of the refrigerator temperature control fan, and is used for monitoring the temperature in the drawer; the cold storage evaporator module comprises a container cover plate, a container lower shell, heat exchange fins, a cold storage agent, an evaporator core, a refrigerant inlet pipeline, a refrigerant outlet pipeline and a cold storage agent temperature sensor; the container cover plate is arranged at the upper end of the container lower shell, the container lower shell is internally provided with the cold storage agent, the evaporator core is immersed in the cold storage agent, and the heat exchange fins are arranged on the front side wall of the container lower shell; the outlet of the refrigerant inlet pipeline and the inlet of the refrigerant outlet pipeline are respectively connected with the refrigerant inlet and outlet of the evaporator core, the inlet of the refrigerant inlet pipeline is connected with the outlet of the expansion valve of a refrigerating system through a pipeline, the outlet of the refrigerant outlet pipeline is connected with the inlet pipeline of a compressor in the refrigerating system through a pipeline, and the temperature sensing bag at one end of the cold storage agent temperature sensor is immersed in the cold storage agent, and the wire harness at the other end of the cold storage agent temperature sensor is connected with a controller.

[0005] Further, in the application, the refrigerator shell comprises a refrigerator shell upper shell and a refrigerator shell lower shell, the inner container heat preservation plate comprises an upper heat preservation plate and a lower heat preservation plate, and the inner container comprises an inner container upper shell and an inner container lower shell; the inner container upper shell is nested in the refrigerator shell upper shell, and the upper heat preservation plate is arranged between the inner container upper shell and the refrigerator shell upper shell; the inner container lower shell is nested in the refrigerator shell lower shell, and the lower heat preservation plate is arranged between the inner container lower shell and the refrigerator shell lower shell.

[0006] Further, in the application, the container cover plate and the container lower shell are made of heat conductive materials; the cold storage agent is a phase change material, and has high melting latent heat at a phase change temperature point.

[0007] Further, in the application, the side wall of the drawer is provided with a ventilation hole, the front end of the drawer is provided with a drawer heat preservation plate, and the rear end side wall of the drawer is in a circular arc structure.

[0008] Further, in the application, the drawer heat preservation plate and the inner container heat preservation plate are both made of vacuum heat insulation plate materials.

[0009] Compared with the prior art, the application has the following beneficial effects:

[0010] First, the temperature inside the refrigerator can be maintained after parking by releasing the cold energy stored in the cold storage agent. Second, the evaporator module with cold storage function can buffer the temperature fluctuation inside the refrigerator caused by the fluctuation of the evaporation temperature of the thermal management system. Third, the evaporator module with cold storage function can quickly release the cold energy stored in the cold storage agent, thereby achieving the effect of quickly cooling the items inside the refrigerator. Fourth, the heat preservation plate in the vehicle-mounted refrigerator with cold storage function adopts a vacuum heat preservation plate material, which is a high-performance heat preservation material composed of a filling core and a protective surface layer through vacuum packaging and compounding, and the thermal conductivity can be as low as 0.004 W / mK. The thickness of the refrigerator heat preservation layer can be greatly reduced, and a larger storage space can be realized under the same boundary conditions. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a schematic diagram of the three-dimensional structure of the embodiment of the present application;

[0012] Figure 2 is an overall part explosion diagram of the embodiment of the present application;

[0013] Figure 3 is a part explosion diagram of the cold storage evaporator module in the embodiment of the present application;

[0014] Figure 4 is a schematic diagram of the combination of the cold storage evaporator module and the refrigerator temperature control system in the embodiment of the present application;

[0015] Figure 5 is a schematic diagram of the structure of the drawer in the embodiment of the present application;

[0016] Figure 6 is a schematic diagram of the structure of the inner container in the embodiment of the present application;

[0017] Figure 7 is a schematic diagram of the combination of the inner container and the cold storage evaporator module in the embodiment of the present application;

[0018] Figure 8 is a schematic diagram of the combination of the inner container, the cold storage evaporator module and the drawer in the embodiment of the present application;

[0019] Figure 9 is a schematic diagram of the combination of the inner container, the cold storage evaporator module, the drawer and the lower shell of the refrigerator shell in the embodiment of the present application;

[0020] Figure 10 is a system architecture diagram of the combination of the present application and the whole vehicle thermal management system;

[0021] 1, refrigerator shell, 2, inner container heat preservation plate, 3, inner container, 4, cold storage evaporator module, 5, refrigerator temperature control system, 6, drawer, 101, refrigerator shell upper shell, 102, refrigerator shell lower shell, 201, upper heat preservation plate, 202, lower heat preservation plate, 301, inner container upper shell, 302, inner container lower shell, 401, container cover plate, 402, container lower shell, 403, heat exchange fin, 404, cold storage agent, 405, evaporator core, 406, refrigerant inlet pipeline, 407, refrigerant outlet pipeline, 408, cold storage agent temperature sensor, 501, refrigerator temperature control fan, 502, lower stop block, 503, upper stop block, 504, storage compartment temperature sensor, 601, drawer front wall, 602, drawer right wall, 603, drawer back wall, 604, drawer left wall, 605, drawer lower wall, 606, drawer first ventilation hole, 607, drawer second ventilation hole, 608, drawer heat preservation plate, 609, door opening shell, 3021, inner container lower shell side wall, 3022, inner container lower shell lower wall, 3023, first partition, 3024, second partition, 3025, third partition, 3026, clamping groove, 3027, partition ventilation hole. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below with reference to the drawings. The embodiments are based on the technical scheme of the present application, and give detailed implementation and specific operation process, but the protection scope of the present application is not limited to the following embodiments.

[0023] Examples

[0024] The system principle of the present application is as follows Figures 1 to 9As shown, the application comprises a refrigerator shell 1, an inner container heat preservation plate 2, an inner container 3, a cold storage evaporator module 4, a refrigerator temperature control system 5, a drawer 6; the refrigerator shell 1 comprises a refrigerator shell upper shell 101 and a refrigerator shell lower shell 102, the inner container heat preservation plate 2 comprises an upper heat preservation plate 201 and a lower heat preservation plate 202, the inner container 3 comprises an inner container upper shell 301 and an inner container lower shell 302, the cold storage evaporator module 4 comprises a container cover plate 401, a container lower shell 402, heat exchange fins 403, a cold storage agent 404, an evaporator core 405, a refrigerant inlet pipeline 406, a refrigerant outlet pipeline 407, a cold storage agent temperature sensor 408, the refrigerator temperature control system 5 comprises a refrigerator temperature control fan 501, a lower stop block 502, an upper stop block 503, a storage compartment temperature sensor 504, the drawer 6 comprises a drawer front wall 601, a drawer right wall 602, a drawer back wall 603, a drawer left wall 604, a drawer lower wall 605, a drawer first ventilation hole 606, a drawer second ventilation hole 607, a drawer heat preservation plate 608, a door opening shell 609, the inner container lower shell 302 comprises an inner container lower shell side wall 3021, an inner container lower shell lower wall 3022, a first partition plate 3023, a second partition plate 3024, a third partition plate 3025, a clamping groove 3026, and a partition plate ventilation hole 3027.

[0025] The inner container upper shell 301 is nested in the refrigerator shell upper shell 101, and the upper heat preservation plate 201 is arranged between the inner container upper shell 301 and the refrigerator shell upper shell 101; the inner container lower shell 302 is nested in the refrigerator shell lower shell 102, and the lower heat preservation plate 202 is arranged between the inner container lower shell 302 and the refrigerator shell lower shell 102. The container cover plate 401 is arranged at the upper end of the container lower shell 402, the container lower shell 402 is provided with the cold storage agent 404, the evaporator core 405 is immersed in the cold storage agent 404, and the heat exchange fins 403 are arranged on the front side wall of the container lower shell 402; the outlet of the refrigerant inlet pipeline 406 and the inlet of the refrigerant outlet pipeline 407 are respectively connected with the refrigerant inlet and outlet of the evaporator core 405, the inlet of the refrigerant inlet pipeline 406 is connected with the outlet of the expansion valve of the refrigeration system through a pipeline, and the outlet of the refrigerant outlet pipeline 407 is connected with the inlet pipeline of the compressor in the refrigeration system; the temperature sensing bag at one end of the cold storage agent temperature sensor 408 is immersed in the cold storage agent 404, and the wire harness at the other end of the cold storage agent temperature sensor 408 is connected with the controller.

[0026] The first partition plate 3023, the second partition plate 3024 and the third partition plate 3025 are arranged inside the inner container lower shell 302 after being connected together, the clamping groove 3026 is arranged at the middle part of the third partition plate 3025, the third partition plate 3025 is in a circular arc structure, and the partition plate vent hole 3027 is arranged on the first partition plate 3023; the cold storage evaporator module 4 is arranged in the cavity surrounded by the inner container lower shell side wall 3021, the inner container lower shell lower wall 3022, the first partition plate 3023 and the second partition plate 3024, the drawer 6 is arranged in the cavity surrounded by the inner container lower shell side wall 3021, the inner container lower shell lower wall 3022, the first partition plate 3023 and the third partition plate 3025; the upper stop block 503, the refrigerator temperature control fan 501 and the lower stop block 502 are arranged in the clamping groove 3026 from top to bottom in sequence, the wire harness of the storage compartment temperature sensor 504 passes through the upper stop block 503, and the temperature sensing bag of the storage compartment temperature sensor 504 is arranged at the air outlet of the refrigerator temperature control fan 501. The refrigerator temperature control fan 501 is used for blowing the cold quantity discharged by the cold storage evaporator module 4 into the cavity where the drawer 6 is placed; and the storage compartment temperature sensor 504 is used for monitoring the temperature in the drawer 6.

[0027] The drawer front wall 601, the drawer right wall 602, the drawer back wall 603, the drawer left wall 604 and the drawer lower wall 605 are integrated together, the drawer back wall 603 is in a circular arc structure, the drawer first vent hole 606 is arranged on the drawer back wall 603, the drawer second vent hole 607 is arranged on the drawer left wall 604, the door opening shell 609 is arranged on the drawer front wall 601, and the drawer heat preservation plate 608 is arranged between the door opening shell 609 and the drawer front wall 601.

[0028] The container cover plate 401 and the container lower shell 402 are made of heat-conducting materials; the cold storage agent 404 is a phase change material and has high melting latent heat at a phase change temperature point. The drawer heat preservation plate 608, the upper heat preservation plate 201 and the lower heat preservation plate 202 are all made of vacuum heat insulation plate materials.

[0029] In the implementation of the present application, the cold storage evaporator module 4 is used as a component in the refrigeration system. The refrigerant inlet pipe 406 is connected to the outlet of the expansion valve of the refrigeration system, and the refrigerant outlet pipe 407 is connected to the inlet pipe of the compressor in the refrigeration system. The refrigerant in the refrigeration system is throttled by the expansion valve, and the low-temperature and low-pressure refrigerant enters the evaporator core 405 from the refrigerant inlet pipe 406, and then flows out from the refrigerant outlet pipe 407 into the suction pipe of the compressor in the refrigeration system; the refrigerant exchanges heat with the surrounding cold storage agent 404 when passing through the evaporator core 405, and stores cold energy in the cold storage agent; the cold storage agent 404 is a phase change material and has a large phase change latent heat at the phase change temperature point, which can store a large amount of cold energy. The container cover plate 401 and the container lower shell 402 are made of heat-conducting materials, which can release the cold energy in the cold storage agent to other objects. In order to enhance the heat exchange coefficient of the cold storage agent container, heat exchange fins 403 are added to the surface of the container lower shell 402. The temperature sensing bag of the cold storage agent temperature sensor 408 is used to sense the temperature of the cold storage agent, and the wire harness of the cold storage agent temperature sensor 408 is used to transmit the temperature signal of the cold storage agent to the controller.

[0030] In the implementation of the present application, the cold storage refrigerator can be integrated into the vehicle thermal management system, as shown in Figure 10 The electronic expansion valve EXV3, the cold storage evaporator module 4 and the first temperature and pressure sensor are connected in series and connected in parallel with the battery cooler and the cabin evaporator in the vehicle thermal management system. The cold storage process of the cold storage refrigerator will be described below.

[0031] Working mode 1: the cold storage refrigerator starts to store cold, and the battery cooler and the cabin evaporator do not work.

[0032] In the case of working mode 1, the cold storage refrigerator can adjust the evaporation temperature of the cold storage refrigerator through the electronic expansion valve EXV3 according to the demand, so that the evaporation temperature is lower than the phase change temperature of the cold storage agent. When the temperature of the cold storage agent is lowered to below the phase change temperature of the cold storage agent, the cold storage refrigerator completes the cold storage, and the compressor and the condenser of the vehicle thermal management system can be turned off.

[0033] Working mode 2: the cold storage refrigerator starts to store cold, the battery cooler or the cabin evaporator works, and the phase change temperature of the cold storage agent of the cold storage refrigerator is higher than the evaporation temperature of the vehicle thermal management system.

[0034] In the case of working mode 2, the phase change point temperature of the cold storage agent of the cold storage refrigerator is higher than the evaporation temperature of the vehicle thermal management system, and can be cooled to below the phase change point temperature of the cold storage agent, so that the cold storage can be completed. When the cold storage refrigerator completes the cold storage, the electronic expansion valve EXV3 is turned off, and the evaporator of the cold storage refrigerator stops working.

[0035] Working mode 3: the vehicle-mounted refrigerator with the cold storage function starts the cold storage, the battery cooler or the cabin evaporator works, and the phase change temperature of the cold storage agent of the vehicle-mounted refrigerator is lower than the evaporation temperature of the whole vehicle thermal management system.

[0036] In the working mode 3, the vehicle-mounted refrigerator with the cold storage function can adjust the superheat degree of the refrigerant at the outlet of the vehicle-mounted refrigerator evaporator by adjusting the opening degree of the electronic expansion valve EXV3, release the cold energy of the vehicle-mounted refrigerator evaporator in the vehicle-mounted refrigerator storage room through the vehicle-mounted cold storage agent and the cold storage agent container, and maintain the temperature in the vehicle-mounted refrigerator storage room; and when the whole vehicle thermal management system is adjusted to the working mode 1 or the working mode 2, the cold storage process is completed again.

[0037] In the present application, the working modes of the vehicle-mounted refrigerator with the cold storage function are as follows:

[0038] The cold storage agent temperature sensor 408 is used for sensing the temperature of the cold storage agent 404 and sending the temperature signal to the refrigerator controller of the whole vehicle; when the temperature of the cold storage agent 404 is higher than the phase change point temperature of the cold storage agent, the opening instruction of the cold storage is given through the logical judgment of the refrigerator controller, and the whole vehicle thermal management system can complete the cold storage process according to one of the working mode 1, the working mode 2 or the working mode 3.

[0039] The storage room temperature sensor 504 is used for sensing the temperature in the drawer 6 and sending the temperature signal to the refrigerator controller; when the temperature sensed by the storage room temperature sensor 504 is higher than the set refrigerator cooling demand temperature threshold, the refrigerator temperature control fan 501 is started to pump the air in the drawer 6 into the air flow channel around the cold storage evaporator module 4, the air flow is cooled by the cold storage evaporator module 4 and then flows into the drawer 6 to cool the drawer 6; when the temperature sensed by the storage room temperature sensor 504 is lower than the set cooling completion temperature threshold of the refrigerator, the refrigerator temperature control fan 501 stops running, and the cooling of the storage room by the refrigerator is completed.

[0040] The above embodiments only exemplarily illustrate the design principles and use effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and category of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A vehicle-mounted refrigerator with cold storage function, characterized in that, Includes refrigerator outer shell (1), inner liner insulation board (2), inner liner (3), cold storage evaporator module (4), refrigerator temperature control system (5), drawer (6); The inner liner (3) is nested inside the refrigerator outer shell (1), and the inner liner insulation board (2) is arranged between the refrigerator outer shell (1) and the inner liner (3); The inner liner (3) has a partition inside, which divides the interior of the inner liner (3) into two main cavities. One cavity is used to place the cold storage evaporator module (4), and the other cavity is used to place the drawer (6). The refrigerator temperature control system (5) includes a refrigerator temperature control fan and a storage compartment temperature sensor. The refrigerator temperature control fan is arranged on the internal partition of the inner liner (3) to pump the air inside the drawer (6) into the airflow channel around the cold storage evaporator module (4). The temperature sensing bulb of the storage compartment temperature sensor is arranged at the air outlet of the refrigerator temperature control fan to monitor the temperature inside the drawer (6). The cold storage evaporator module (4) includes a container cover (401), a container lower shell (402), heat exchange fins (403), a cold storage agent (404), an evaporator core (405), a refrigerant inlet pipe (406), a refrigerant outlet pipe (407), and a cold storage agent temperature sensor (408). The container cover (401) is located at the upper end of the container lower shell (402). The container lower shell (402) contains the cold storage agent (404), and the evaporator core (405) is immersed in the cold storage agent (404). The heat exchange fins (403) are located on the container lower shell. On the front side wall of the body (402); the outlet of the refrigerant inlet pipe (406) and the inlet of the refrigerant outlet pipe (407) are respectively connected to the refrigerant inlet and outlet of the evaporator core (405), the inlet of the refrigerant inlet pipe (406) is connected to the outlet of the expansion valve of the refrigeration system through a pipe, and the outlet of the refrigerant outlet pipe (407) is connected to the compressor inlet pipe in the refrigeration system through a pipe; the temperature sensing bulb at one end of the refrigerant temperature sensor (408) is immersed in the refrigerant (404), and the wiring harness at the other end of the refrigerant temperature sensor (408) is connected to the controller; The refrigerator outer shell (1) includes an upper shell (101) and a lower shell (102); the inner liner insulation board (2) includes an upper insulation board (201) and a lower insulation board (202); the inner liner (3) includes an upper shell (301) and a lower shell (302); the upper shell (301) is nested inside the upper shell (101) of the refrigerator outer shell, and the upper insulation board (201) is arranged between the upper shell (301) of the inner liner and the upper shell (101) of the refrigerator outer shell; the lower shell (302) of the inner liner is nested inside the lower shell (102) of the refrigerator outer shell, and the lower insulation board (202) is arranged between the lower shell (302) of the inner liner and the lower shell (102) of the refrigerator outer shell; The container cover (401) and the lower shell (402) are both made of thermally conductive materials; the cold storage agent (404) is a phase change material with a high latent heat of melting at the phase change temperature. Ventilation holes are arranged on the side wall of the drawer (6), a drawer insulation board is arranged at the front end of the drawer (6), and the rear side wall of the drawer (6) is an arc-shaped structure. The drawer insulation board and the inner liner insulation board (2) are both made of vacuum insulation board material.

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