Self-adaptive heat exchange vehicle-mounted refrigerator

Abstract

The invention relates to the technical field of vehicle-mounted refrigerators, and discloses a self-adaptive heat exchange vehicle-mounted refrigerator which comprises a heat preservation box body, a sliding drawer and a refrigeration module, the refrigeration module is fixedly installed in the heat preservation box body, the sliding drawer is slidably connected into the heat preservation box body, and sliding grooves are formed in the lower end in the sliding drawer and the top end of the heat preservation box body correspondingly; a telescopic table is slidably connected to the sliding groove, a containing cavity with the variable volume is formed between the front end of the telescopic table and the sliding drawer, an elastic piston is fixedly connected to the rear end face of the telescopic table, and the bottom of the elastic piston is fixedly installed on the heat preservation box body; when the sliding drawer is completely pushed back to the heat preservation box body, the articles are subjected to bidirectional clamping force, vibration of the articles in the containing cavity is effectively reduced, meanwhile, the size of the containing cavity is changed along with the change of the size of the articles, the refrigeration module only needs to refrigerate the minimum space needed for containing the articles, unnecessary energy consumption is reduced, and the refrigeration efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted refrigerators, and particularly to an adaptive heat exchange vehicle-mounted refrigerator. Background Art

[0002] A vehicle-mounted refrigerator is a portable refrigeration device designed specifically for vehicles. It integrates modern refrigeration technology and a compact design, aiming to provide users with convenient refrigeration and preservation functions when driving. It is usually installed in easily accessible positions such as the back seat, trunk, or beside the driver's seat of a car. Its interior uses an energy-efficient semiconductor cooling plate or a compression refrigeration system, which can quickly reach and maintain the set temperature, greatly improving the comfort and convenience of the journey.

[0003] However, during the use of existing vehicle-mounted refrigerators, due to the volume limitation of the internal compressor or semiconductor cooling plate, their refrigeration effect is relatively low. At the same time, vehicle-mounted refrigerators are mainly used inside vehicles, and their usage environment is relatively limited. For example, a vehicle-mounted refrigerator with a damping structure proposed in Chinese Patent CN217110129U includes a vehicle-mounted refrigerator body for integration on the armrest box of a car. A cold chamber and a refrigeration component are provided inside the vehicle-mounted refrigerator body. An opening communicating with the cold chamber is provided on the vehicle-mounted refrigerator, and a closing door for closing the opening is provided on the opening; a pull-out drawer is inserted into the cold chamber along the opening, and a damping buffer member connected to the pull-out drawer is provided on the vehicle-mounted refrigerator body. However, when users travel, they usually only carry a limited amount of food and beverages. The quantity and volume of these items are often not enough to fill the entire space of the vehicle-mounted refrigerator, and the heat preservation performance of the vehicle-mounted refrigerator may not reach the level of a household refrigerator. When there are fewer items in the refrigerator, the temperature inside the refrigerator is more likely to fluctuate due to the influence of the external environment. To maintain a constant temperature, the refrigerator needs to start the refrigeration system more frequently for adjustment, which not only wastes energy but also generates additional noise; during vehicle operation, the vehicle-mounted refrigerator is often affected by the vibration of the vehicle, and the vibration may cause the items inside the refrigerator to move or even collide with each other. This may not only damage the items but also generate additional noise. Summary of the Invention

[0004] (1) Technical problems to be solved: Aiming at the deficiencies of the prior art, the present invention provides an adaptive heat exchange vehicle-mounted refrigerator, which has the advantages of being able to self-adjust the refrigeration area according to the size of the objects inside the refrigerator and reducing the vibration of the objects during vehicle operation, and solves the problems of poor refrigeration effect and easy shaking of the internal objects during vehicle driving in the use of existing vehicle-mounted refrigerators.

[0005] (2) Technical solution: To achieve the above object of being able to automatically adjust the refrigeration area according to the size of the objects in the refrigerator and at the same time reduce the vibration of the objects during vehicle operation, the present invention provides the following technical solution: An adaptive heat exchange vehicle-mounted refrigerator, including a heat preservation box body, a sliding drawer, and a refrigeration module. The refrigeration module is fixedly installed inside the heat preservation box body, and the sliding drawer is slidably connected inside the heat preservation box body. Sliding grooves are provided at the lower end of the sliding drawer and the top end of the heat preservation box body. An expansion table is slidably connected to the sliding grooves. A receiving cavity with a variable volume is formed between the front end of the expansion table and the sliding drawer. An elastic piston is fixedly connected to the rear end surface of the expansion table, and the bottom of the elastic piston is fixedly installed on the heat preservation box body. Expansion plates are slidably connected to both sides of the expansion table, and gaps are provided between the expansion plates and the expansion table and the inner walls of both sides of the sliding drawer. The expansion plates are slidably connected to fixed plates, and both ends of the fixed plates are fixedly installed on the inner wall of the heat preservation box body. An evaporation pipe is connected to the refrigeration module, and the evaporation pipe is arranged in the inner walls of both sides and the bottom side of the heat preservation box body; during use, the expansion table and the sliding drawer jointly clamp the items in the receiving cavity.

[0006] Preferably, the evaporation pipes on both sides of the heat preservation box body are laid from the front end of the sliding drawer to the front end of the fixed plate, and the evaporation pipe on the bottom side of the heat preservation box body is laid from the front end of the sliding drawer to the front end of the expansion table; and the top of the expansion table is attached to the heat preservation box body, the bottom of the expansion table is attached to the sliding drawer, the top of the expansion plate is attached to the heat preservation box body, and the bottom of the expansion plate is attached to the sliding drawer.

[0007] Preferably, several drain ports are further provided at the front end of the receiving cavity, and a water storage tank is provided at the lower end of the drain ports. The water storage tank is fixedly installed at the bottom of the sliding drawer; and the bottom surface of the receiving cavity is an inclined surface inclined towards the drain ports. A water scraping plate is provided at the bottom of the expansion table, and the water scraping plate is in contact with the bottom of the sliding drawer.

[0008] Preferably, a gas circulation channel is opened in the fixed plate. One end of the gas circulation channel is communicated with the receiving cavity, and the other end of the gas circulation channel is communicated with the inner space of the fixed plate. And a fan for exhausting air towards the receiving cavity is provided on the gas circulation channel; when the fan is started, it exhausts air towards the receiving cavity, drives the gas flow in the gap between the expansion plate and the expansion table and the sliding drawer, and at the same time increases the internal pressure of the receiving cavity.

[0009] Preferably, heat preservation materials are laid on the inner surfaces of the expansion table, the expansion plates and the fixed plates, and heat conduction materials are laid on the outer surfaces of the expansion table and the expansion plates.

[0010] Preferably, the distance between the two sides of the telescopic table is less than the distance between the two sides of the two telescopic plates, and the distance between the two sides of the telescopic plates is less than the distance between the two sides of the fixed plate.

[0011] Preferably, a limiting protrusion for preventing the excessive telescoping of the telescopic table is provided at the front end of the sliding groove.

[0012] (III) Beneficial effects: Compared with the prior art, the present invention provides an adaptive heat exchange vehicle refrigerator, which has the following beneficial effects: 1. For this adaptive heat exchange vehicle refrigerator, through the combined use of the telescopic table structure and the sliding drawer structure, when the sliding drawer is fully pushed back into the insulation box body, the item will be subjected to the thrust from the telescopic table, and at the same time, it will be subjected to the pressure from the front side of the sliding drawer on the other side. This two-way clamping force ensures that the item is firmly fixed in the accommodation cavity, thus avoiding the vibration or bump generated during vehicle operation from affecting the items in the refrigerator and effectively reducing the vibration of the items in the accommodation cavity; at the same time, the volume of the accommodation cavity is approximately equal to the volume of the item, and the refrigeration module only needs to refrigerate the minimum space required to accommodate the item, reducing unnecessary energy consumption. Therefore, it can greatly improve the refrigeration effect of the device on the item, and after the air volume in the accommodation cavity is refrigerated, it is greatly reduced, making it easier to maintain the temperature in the insulation box body at the required refrigeration temperature, effectively improving the heat preservation effect of the insulation box body, and further reducing the startup frequency of the refrigeration module; after the sliding drawer is fully pushed back into the insulation box body, when the telescopic table extends outwards, it will compress the gas in the accommodation cavity, forming an outward pressure difference, thereby preventing external gas from entering the accommodation cavity, reducing heat exchange and improving the heat preservation performance of the accommodation cavity, and also avoiding the formation of condensation water droplets when external gas enters the accommodation cavity.

[0013] 2. For this adaptive heat exchange vehicle refrigerator, through the combined use of the telescopic table structure and the refrigeration module, when the evaporation tube refrigerates the inside of the insulation box body, the temperature of the telescopic table will also decrease accordingly. The decrease in the temperature of the telescopic table enables the side of the item in contact with it to receive cold energy through heat conduction, reducing the thermal resistance in the heat conduction process and enabling heat to be transferred from the telescopic table to the item more quickly. In contrast, traditional refrigerators cool the air inside the refrigerator first and then conduct it to the object, with lower efficiency.

[0014] 3. This adaptive heat exchange vehicle refrigerator, through the combined use of the telescopic platform structure and the fan structure, when the fan set on the fixed plate starts to exhaust air, it will draw the gas in the internal space of the telescopic platform and the telescopic plate into the accommodation cavity, thereby realizing the air exchange of the gas inside the accommodation cavity. And when there is fan airflow, it will drive the relatively low-temperature gas in the gap to flow into the accommodation cavity together. Since the temperature of these gases is already low, when these two kinds of gases are mixed and brought into the accommodation cavity, it will not cause a significant drop in the temperature of the accommodation cavity, and it can also avoid the accumulation of cold quantity in the gap. At the same time, when the gas enters the accommodation cavity, it will also increase the pressure inside the accommodation cavity, and it can also prevent external gas from entering the accommodation cavity to form condensed water droplets and improve its heat preservation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structure diagram of the adaptive heat exchange vehicle refrigerator in the present invention.

[0016] Figure 2 It is a front view of the structure of the adaptive heat exchange vehicle refrigerator in the present invention.

[0017] Figure 3 It is a top view of the structure of the adaptive heat exchange vehicle refrigerator in the present invention.

[0018] Figure 4 In the present invention Figure 2 Cross-sectional view taken along line A-A.

[0019] Figure 5 In the present invention Figure 3 Cross-sectional view taken along line B-B.

[0020] Figure 6 It is a schematic cross-sectional view when the telescopic platform structure in the present invention shrinks.

[0021] Figure 7 It is a schematic cross-sectional view when the sliding drawer structure in the present invention is pulled out.

[0022] Figure 8 It is a three-dimensional structure cross-sectional view of the adaptive heat exchange vehicle refrigerator in the present invention.

[0023] Figure 9 In the present invention Figure 4 Partial detail view N.

[0024] Figure 10 In the present invention Figure 5 Partial detail view M.

[0025] In the figure: 1, heat preservation box body; 2, sliding drawer; 21, accommodation cavity; 22, drain port; 3, refrigeration module; 31, evaporation pipe; 4, telescopic table; 41, wiper; 5, elastic piston; 6, telescopic plate; 7, fixing plate; 71, gas circulation channel; 72, fan; 8, water storage tank. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 - 5 and Figure 8 , an adaptive heat exchange vehicle-mounted refrigerator, including a heat preservation box body 1, a sliding drawer 2, and a refrigeration module 3. The refrigeration module 3 is fixedly installed inside the heat preservation box body 1, and the sliding drawer 2 is slidably connected inside the heat preservation box body 1. This design is to ensure that the refrigeration module 3 can work stably and efficiently, and at the same time facilitate users to access items through the sliding drawer 2. The fixed installation of the refrigeration module 3 can ensure that it will not be damaged due to movement or vibration, and the sliding drawer 2 provides a convenient access method. When the sliding drawer 2 is pulled out as Figure 7As shown, sliding grooves are provided at the lower end inside the sliding drawer 2 and the top end of the heat preservation box body 1. A telescopic platform 4 is slidably connected to the sliding grooves. The design of the sliding grooves and the telescopic platform 4 is to achieve adaptive volume adjustment. When items are placed into the sliding drawer 2, they will push the telescopic platform 4 to move backward, thereby adjusting the size of the accommodating cavity 21 to tightly wrap the items. This helps reduce energy loss during the refrigeration process and improve the refrigeration efficiency. An accommodating cavity 21 with a variable volume is formed between the front end of the telescopic platform 4 and the sliding drawer 2. The accommodating cavity 21 with a variable volume can adapt to items of different sizes and shapes, ensuring that they can be tightly wrapped. This design helps improve the refrigeration effect and heat preservation performance of the refrigerator while reducing unnecessary energy consumption. An elastic piston 5 is fixedly connected to the rear end face of the telescopic platform 4. The bottom of the elastic piston 5 is fixedly installed on the heat preservation box body 1. The design of the elastic piston 5 is to provide necessary support and buffering for the telescopic platform 4 when items are placed in or taken out. When the items push the telescopic platform 4 to move backward, the elastic piston 5 will be compressed and store energy; when the items are taken out, the elastic piston 5 will release energy to help the telescopic platform 4 return to its original position. This design helps maintain the tightness and stability of the accommodating cavity 21. The elastic piston 5 is made of an elastic material such as rubber or a spring. Telescopic plates 6 are slidably connected to both sides of the telescopic platform 4, and gaps are provided between the telescopic plates 6 and the telescopic platform 4 and the inner walls on both sides of the sliding drawer 2. The design of the telescopic plates 6 and the gaps is to provide better heat conduction and gas circulation effects. When the evaporation tube 31 refrigerates, cold air can flow into the accommodating cavity 21 through the channels between the gaps and the telescopic plates 6 to cool the items. At the same time, these gaps also help maintain the air circulation inside the accommodating cavity 21 and reduce the formation of condensed water droplets. The telescopic plates 6 are slidably connected to a fixed plate 7. Both ends of the fixed plate 7 are fixedly installed on the inner wall of the heat preservation box body 1. The design of the fixed plate 7 is to provide a stable support structure for the telescopic plates 6. It ensures that the telescopic plates 6 can remain stable and steady during the sliding process, and also helps maintain the tightness and stability of the accommodating cavity 21. And an evaporation tube 31 is connected to the refrigeration module 3. The evaporation tube 31 is arranged in the inner walls on both sides and the bottom side of the heat preservation box body 1. The design of the evaporation tube 31 is to achieve the refrigeration effect. When the refrigeration module 3 works, it will release cold energy into the internal space of the heat preservation box body 1 through the evaporation tube 31. The evaporation tube 31 is arranged in the inner walls on both sides and the bottom side of the heat preservation box body 1, which can ensure that the cold air can be evenly distributed throughout the refrigerator interior, improving the refrigeration effect and efficiency; Please refer to Figure 6 During use, the telescopic platform 4 and the sliding drawer 2 jointly clamp the items inside the accommodating cavity 21.

[0028] Please refer to Figures 1 - 5 and Figure 10, the evaporation pipes 31 on both sides of the heat preservation box body 1 are laid along the front end of the sliding drawer 2 to the front end position of the fixed plate 7, and the evaporation pipes 31 on the bottom side of the heat preservation box body 1 are laid along the front end of the sliding drawer 2 to the front end position of the telescopic table 4. This design is to optimize the refrigeration effect and energy utilization. Laying the evaporation pipes 31 on both sides of the heat preservation box body 1 to the front end of the fixed plate 7 can ensure that during the refrigeration process, cold air can effectively reach the items in the accommodation cavity 21 through the gaps between the telescopic plate 6 and the telescopic table 4 and the sliding drawer 2, as well as the heat-conducting material on the surface of the telescopic table 4. At the same time, it avoids ineffective refrigeration of the internal area of the telescopic table 4 and improves the refrigeration efficiency of the evaporation pipes 31. Laying the evaporation pipes 31 on the bottom side to the front end of the telescopic table 4 is to ensure that when the telescopic table 4 contracts, the bottom of its accommodation cavity 21 can also be fully refrigerated. And the top of the telescopic table 4 is attached to the heat preservation box body 1, the bottom of the telescopic table 4 is attached to the sliding drawer 2, the top of the telescopic plate 6 is attached to the heat preservation box body 1, and the bottom of the telescopic plate 6 is attached to the sliding drawer 2. Attaching to the heat preservation box body 1 at the top can ensure that the telescopic table 4 and the telescopic plate 6 will not move upward when being squeezed by items, thus maintaining the tightness of the accommodation cavity 21. Attaching to the sliding drawer 2 at the bottom is to ensure that the telescopic table 4 and the telescopic plate 6 can move smoothly when being pushed by items. Please refer to Figure 4 , Figure 5 and Figure 9 , a gas circulation channel 71 is provided in the fixed plate 7. One end of the gas circulation channel 71 is connected to the accommodation cavity 21, and the other end of the gas circulation channel 71 is connected to the inner space of the fixed plate 7. Through the gas circulation channel 71, the gas in the accommodation cavity 21 can be exchanged with the gas in the inner space of the fixed plate 7, so as to keep the air fresh and the temperature stable in the accommodation cavity 21. At the same time, the gas circulation channel 71 can also help adjust the pressure in the accommodation cavity 21 and prevent external gas from entering the accommodation cavity 21 to form condensed water droplets. And a fan 72 for exhausting air towards the accommodation cavity 21 is provided on the gas circulation channel 71; when the fan 72 is started, it exhausts air into the accommodation cavity 21, driving the gas flow in the gap between the telescopic plate 6 and the telescopic table 4 and the sliding drawer 2, and at the same time increasing the internal pressure of the accommodation cavity 21.

[0029] Please refer to Figure 4 , Figure 5 , Figure 8 and Figure 10, several drain ports 22 are also provided at the front end of the accommodation cavity 21. The design of the drain ports 22 is to drain the condensed water or leaked moisture that may be generated in the accommodation cavity 21, preventing the accumulation of moisture from causing damage to the interior of the refrigerator or affecting the refrigeration effect. When the refrigerator is running, due to the temperature difference change, condensed water may be generated in the accommodation cavity 21. Through the drain ports 22, this condensed water can be discharged in time to keep the interior of the refrigerator dry and clean. A water storage tank 8 is provided at the lower end of the drain port 22. The water storage tank 8 is fixedly installed at the bottom of the sliding drawer 2. Through the water storage tank 8 fixedly installed at the bottom of the sliding drawer 2, the condensed water can be conveniently collected and cleaned to keep the external environment of the refrigerator clean. And the bottom surface of the accommodation cavity 21 is an inclined surface that slopes towards the drain port 22. The bottom surface of the accommodation cavity 21 is designed as an inclined surface that slopes towards the drain port 22 to ensure that the condensed water can smoothly flow towards the drain port 22 and be discharged. The inclined surface design can accelerate the flow rate of the condensed water and reduce the occurrence of water accumulation, thereby improving the drainage efficiency and dryness of the refrigerator. A wiper 41 is provided at the bottom of the telescopic platform 4. The wiper 41 is in contact with the bottom surface of the sliding drawer 2. The design of the wiper 41 is to further prevent condensed water from accumulating between the telescopic platform 4 and the sliding drawer 2. When the telescopic platform 4 moves, the wiper 41 will scrape off the moisture attached to the bottom surface of the sliding drawer 2 to ensure that the moisture does not flow into the interior of the refrigerator or cause other damages. At the same time, the wiper 41 can also play a sealing role to reduce the entry of external air and moisture. Heat insulation materials are laid on the inner surfaces of the telescopic platform 4, the telescopic plate 6 and the fixing plate 7. The design of the heat insulation materials is to reduce the heat dissipation inside the refrigerator and improve the heat insulation performance of the refrigerator. By laying heat insulation materials on the inner surfaces of the telescopic platform 4, the telescopic plate 6 and the fixing plate 7, the heat transfer can be effectively blocked to keep the interior of the refrigerator in a low-temperature state. Heat insulation materials with good heat insulation performance are selected, such as polyurethane foam, fiberglass, etc. Heat conducting materials are laid on the outer surfaces of the telescopic platform 4 and the telescopic plate 6. The design of the heat conducting materials is to accelerate the heat transfer and improve the refrigeration efficiency of the refrigerator. By laying heat conducting materials on the outer surfaces of the telescopic platform 4 and the telescopic plate 6, the cold generated by the evaporation pipe 31 can be quickly transferred to the items to achieve rapid cooling. Heat conducting materials with good heat conduction performance are selected, such as metals like aluminum and copper or heat conducting plastics, etc. The distance between the two sides of the telescopic platform 4 is less than the distance between the two sides of the two telescopic plates 6 on both sides, and the distance between the two sides of the telescopic plate 6 is less than the distance between the two sides of the fixing plate 7. This design is to ensure that effective gaps can be formed between the telescopic platform 4, the telescopic plate 6 and the fixing plate 7 for the flow and heat exchange of gas. A limit protrusion for preventing the excessive telescoping of the telescopic platform 4 is provided at the front end of the sliding groove. The design of the limit protrusion is to prevent the telescopic platform 4 from telescoping excessively during the movement process, causing damage or affecting the normal use of the refrigerator.

[0030] Working principle: When in use, pull out the sliding drawer 2 from the heat preservation box body 1, as Figure 7As shown, place the items to be refrigerated in the sliding drawer 2, and then push the sliding drawer 2 back. During the process of pushing it back, the items will contact and squeeze the telescopic platform 4, causing the telescopic platform 4 to contract. When the sliding drawer 2 is completely pushed back into the insulation box 1, the items will receive a thrust from the telescopic platform 4 and at the same time be pressured by the front side of the sliding drawer 2 on the other side, as Figure 6 shown. This two-way clamping force ensures that the items are firmly fixed in the accommodation cavity 21. Since the items are firmly clamped, it is very difficult for the vibrations or bumps generated when the vehicle is running to affect the items, thus effectively reducing the vibrations of the items in the accommodation cavity 21. At the same time, the volume of the accommodation cavity 21 is approximately equal to the volume of the items at this time. When the refrigeration module 3 starts refrigeration, since the refrigeration volume becomes smaller and the refrigeration volume is approximately equal to the volume of the items, the refrigeration module 3 only needs to refrigerate the minimum space required to accommodate the items, reducing unnecessary energy consumption. Therefore, it can greatly improve the refrigeration effect of the equipment on the items, and the volume of the air in the accommodation cavity 21 is greatly reduced after refrigeration, making it easier to maintain the temperature in the insulation box 1 at the required refrigeration temperature, effectively improving the heat preservation effect of the insulation box 1, and further reducing the startup frequency of the refrigeration module 3. After the sliding drawer 2 is completely pushed back into the insulation box 1, the items are usually not completely clamped. When vibrations or other external forces affect, the telescopic platform 4 will gradually clamp the items completely in the subsequent process. During this process, since the sliding drawer 2 is completely pushed into the insulation box 1, the accommodation cavity 21 is a closed cavity at this time. When the telescopic platform 4 extends outwards, it will compress the gas in the accommodation cavity 21, thereby gradually increasing the pressure in the accommodation cavity 21. When the internal pressure of the accommodation cavity 21 is higher than the pressure of the external environment of the insulation box 1, an outward pressure difference is formed. This pressure difference will prevent external gas from entering the accommodation cavity 21. The existence of the pressure difference can not only reduce the heat exchange and improve the heat preservation performance of the accommodation cavity 21, but also prevent external gas from entering the accommodation cavity 21 to form condensation water droplets.

[0031] Laying the evaporation tube 31 along the front end of the sliding drawer 2 to the front end position of the telescopic platform 4 can prevent the evaporation tube 31 from cooling the internal area of the telescopic platform 4, reduce the ineffective cooling area, and thus improve the cooling efficiency of the evaporation tube 31. When the evaporation tubes 31 on both sides of the heat preservation box 1 are laid along the front end of the sliding drawer 2 to the front end position of the fixed plate 7, since there are gaps communicating with the accommodation cavity 21 between the telescopic plate 6 and the telescopic platform 4 and the inner walls on both sides of the sliding drawer 2, when the evaporation tubes 31 on both sides cool down, the evaporation tubes 31 at the gap positions will conduct to the accommodation cavity 21 through the air in the gaps and the surface of the telescopic platform 4 to cool the items. And because the outer surface of the telescopic platform 4 is covered with a heat-conducting material which has good heat conduction performance. Therefore, when the evaporation tube 31 cools the inside of the heat preservation box 1, the temperature of the telescopic platform 4 will also decrease accordingly. The decrease in the temperature of the telescopic platform 4 enables the side of the item in contact with it to receive cold through heat conduction, thus realizing the cooling of the item. In addition, the close contact between the telescopic platform 4 and the item also ensures the high efficiency of heat conduction. The close contact reduces the thermal resistance in the heat conduction process, enabling heat to be transferred from the telescopic platform 4 to the item more quickly. While the traditional refrigerator cools the air inside the refrigerator first and then conducts it to the object, with lower efficiency.

[0032] When the fan 72 provided on the fixed plate 7 starts to exhaust air, it will draw the gas in the internal spaces of the telescopic platform 4 and the telescopic plate 6 into the accommodation cavity 21, thus realizing the ventilation of the gas inside the accommodation cavity 21. And this kind of ventilation will not significantly reduce the temperature inside the accommodation cavity 21. Since during the cooling process of the evaporation tube 31, some heat will inevitably be conducted to the inside of the telescopic platform 4, making its internal temperature lower than the external ambient temperature. At the same time, when the gas enters the accommodation cavity 21, the gas will first pass through the gap between the telescopic platform 4 and the heat preservation box 1. Due to the narrowness of the gap, the gas flow at this position is poor, which makes the gas stay in the gap for a longer time and is more likely to be affected by the surrounding low-temperature environment, thus reducing its temperature. When the gas generated by the fan 72 passes through the gap, it will drive these relatively low-temperature gases to flow into the accommodation cavity 21 together. Since the temperature of these gases is already low, when these two kinds of gases are mixed and brought into the accommodation cavity 21, it will not cause a significant decrease in the temperature of the accommodation cavity 21; at the same time, when the gas enters the accommodation cavity 21, it will also increase the pressure inside the accommodation cavity 21, and can also prevent external gas from entering the accommodation cavity 21 to form condensed water droplets and improve its heat preservation performance.

[0033] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive heat exchange vehicle refrigerator, comprising a heat insulation box body (1), a sliding drawer (2), and a refrigeration module (3). The refrigeration module (3) is fixedly installed inside the heat insulation box body (1), and the sliding drawer (2) is slidably connected inside the heat insulation box body (1), characterized in that: At the lower end inside the sliding drawer (2) and the top end of the heat preservation box body (1), sliding grooves are provided. A telescopic platform (4) is slidably connected to the sliding grooves. An accommodating cavity (21) with a variable volume is formed between the front end of the telescopic platform (4) and the sliding drawer (2). An elastic piston (5) is fixedly connected to the rear end surface of the telescopic platform (4), and the bottom of the elastic piston (5) is fixedly installed on the heat preservation box body (1). Telescopic plates (6) are slidably connected to both sides of the telescopic platform (4), and gaps are provided between the telescopic plates (6), the telescopic platform (4) and the inner walls on both sides of the sliding drawer (2). The telescopic plates (6) are slidably connected to a fixed plate (7), and both ends of the fixed plate (7) are fixedly installed on the inner wall of the heat preservation box body (1). An evaporation pipe (31) is connected to the refrigeration module (3), and the evaporation pipe (31) is arranged in the inner walls on both sides and the bottom side of the heat preservation box body (1); during use, the telescopic platform (4) and the sliding drawer (2) jointly clamp the items in the accommodating cavity (21).

2. The adaptive heat exchange vehicle-mounted refrigerator according to claim 1, wherein: The evaporation pipes (31) on both sides of the heat preservation box body (1) are laid along the front end of the sliding drawer (2) to the position in front of the front end of the fixed plate (7), and the evaporation pipe (31) on the bottom side of the heat preservation box body (1) is laid along the front end of the sliding drawer (2) to the position in front of the front end of the telescopic platform (4); and the top of the telescopic platform (4) is attached to the heat preservation box body (1), the bottom of the telescopic platform (4) is attached to the sliding drawer (2), the top of the telescopic plate (6) is attached to the heat preservation box body (1), and the bottom of the telescopic plate (6) is attached to the sliding drawer (2).

3. The self - adaptive heat - exchange vehicle refrigerator according to claim 1, wherein: A plurality of drain ports (22) are further provided at the front end of the accommodating cavity (21), and a water storage tank (8) is provided at the lower end of the drain ports (22). The water storage tank (8) is fixedly installed at the bottom of the sliding drawer (2); and the bottom surface of the accommodating cavity (21) is an inclined surface inclined towards the drain ports (22), and a water scraping plate (41) is provided at the bottom of the telescopic platform (4), and the water scraping plate (41) is in contact with the bottom of the sliding drawer (2).

4. An adaptive heat exchange vehicle refrigerator according to claim 1, characterized in that: A gas circulation channel (71) is formed inside the fixed plate (7). One end of the gas circulation channel (71) is communicated with the accommodating cavity (21), and the other end of the gas circulation channel (71) is communicated with the inner space of the fixed plate (7). A fan (72) for exhausting air towards the accommodating cavity (21) is provided on the gas circulation channel (71); when the fan (72) is started, air is exhausted into the accommodating cavity (21), driving the gas flow in the gap between the telescopic plates (6), the telescopic platform (4) and the sliding drawer (2), and at the same time increasing the pressure in the accommodating cavity (21).

5. An adaptive heat exchange vehicle refrigerator according to claim 1, characterized in that: The inner surfaces of the telescopic platform (4), the telescopic plates (6) and the fixed plate (7) are covered with heat preservation materials, and the outer surfaces of the telescopic platform (4) and the telescopic plates (6) are covered with heat conduction materials.

6. The self-adaptive heat-exchanging vehicle-mounted refrigerator according to claim 1, wherein: The distance between the two sides of the telescopic table (4) is less than the distance between the two sides of the two telescopic plates (6), and the distance between the two sides of the telescopic plate (6) is less than the distance between the two sides of the fixed plate (7).

7. An adaptive heat exchange vehicle refrigerator according to claim 1, characterized in that: A limiting protrusion for preventing the excessive telescoping of the telescopic table (4) is provided at the front end of the sliding groove.

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