A vehicle-mounted refrigerator with independent air-cooled refrigeration system and condensate air drying function

Abstract

This invention discloses a vehicle-mounted refrigerator with an independent air-cooling system and condensate drying function. It includes a cabinet and a detachable refrigeration unit. The cabinet has a refrigeration cavity inside, and a mounting cavity adjacent to the refrigeration cavity is located on one side of the cabinet. An opening is located on one side of the mounting cavity. The refrigeration unit includes a bracket and a compressor, condenser, and evaporator mounted on the bracket and interconnected. A fan is mounted above the evaporator. The bracket aligns with the opening, and after alignment, the evaporator and fan are located within the mounting cavity. An air outlet is located on the side wall of the refrigeration cavity corresponding to the fan position, and an air inlet is located below the evaporator. A water storage box is mounted on the lower side of the bracket, and a heating element is installed inside the water storage box. This invention, through modular layout optimization and a low-cost condensate treatment system design, results in a vehicle-mounted refrigerator with high manufacturing yield, controllable cost, and high reliability.

Description

Technical Field

[0001] This invention relates to the field of vehicle refrigerator technology, specifically a vehicle refrigerator with an independent air-cooling system and a condensate drying function. Background Technology

[0002] With the rapid development of the automotive industry, car refrigerators, as an important in-vehicle device to enhance the driving experience, are increasingly widely used. Traditional compressor-type car refrigerators, due to their stable cooling efficiency, have become the mainstream product in the market. However, in actual use, due to the special characteristics of the in-vehicle environment and limitations in structural design, many technical defects have gradually been exposed: 1. Significant Challenges in Condensation Management: Car refrigerators are typically installed in confined spaces such as the dashboard and must withstand harsh operating conditions including bumps, inclines, and extreme temperatures. With frequent opening and closing of the refrigerator door, humid air entering the compartment and coming into contact with the low-temperature surfaces easily produces large amounts of condensation. Current technology lacks effective solutions for handling this in-vehicle environment. Condensation buildup can lead to bacterial growth inside the refrigerator, corrosion of components, and even overflow and contamination of the vehicle's interior under bumpy conditions.

[0003] 2. High manufacturing risks of integrated structure: Most existing vehicle-mounted air-cooled refrigerators adopt an integrated design in which the evaporator is embedded inside the insulation layer of the cabinet. This structure has two main problems: First, after the evaporator is embedded, it cannot be tested for leaks separately. If there is a potential leak, it can only be discovered after the whole machine is assembled, which may lead to the risk of functional failure. Second, during the foaming process of the cabinet, the evaporator is prone to leakage problems. Once a slight defect occurs, the entire refrigerator cabinet and refrigeration components must be scrapped, which greatly increases the manufacturing cost and reduces the production yield.

[0004] 3. Conflict between cost and safety in condensate treatment: Some products attempt to use independent heating wires, evaporation plates and other components to treat condensate. However, the addition of independent components not only increases manufacturing costs, but also increases the safety risks of live parts coming into contact with condensate due to the limited space and frequent vibrations in the vehicle environment. The reliability is difficult to meet vehicle safety standards.

[0005] To solve the above technical problems, a vehicle-mounted refrigerator with high manufacturing yield, controllable cost, and safety and reliability is needed. Summary of the Invention

[0006] This invention provides a vehicle-mounted refrigerator with an independent air-cooling system and condensate drying function. It combines the core technology of household air-cooled refrigerators with the needs of vehicle scenarios. Through modular layout optimization and low-cost condensate treatment system design, a vehicle-mounted refrigerator with high manufacturing yield, controllable cost, and safety and reliability is formed.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function, comprising a cabinet and an integrally detachable refrigeration unit. The cabinet has a refrigeration cavity inside, and a mounting cavity adjacent to the refrigeration cavity is provided on one side of the cabinet. An opening is provided on one side of the mounting cavity. The refrigeration unit includes a bracket and a compressor, condenser, and evaporator mounted on the bracket and interconnected. A fan is mounted above the evaporator. The bracket aligns with the opening, and after alignment, the evaporator and fan are located within the mounting cavity. An air outlet is provided on the side wall of the refrigeration cavity at a position corresponding to the fan, and an air inlet is provided below the evaporator. The lower side of the bracket is equipped with... The system includes a water storage box with an inlet at one end corresponding to the evaporator. A heating element is installed inside the water storage box to heat and evaporate the condensate. It employs a modular design with a detachable housing and refrigeration unit, allowing the refrigeration unit to be manufactured, leak-tested, and tested independently. This avoids the risk of evaporator failure due to pre-embedded leaks and prevents complete machine scrapping caused by leaks in integrated designs, significantly improving production yield and reducing manufacturing costs. The evaporator and fan, along with the air outlet and inlet of the refrigeration chamber, form a complete air-cooled circulation channel, resulting in a more uniform temperature distribution inside the refrigeration chamber. The water storage box and heating element work together to heat and evaporate the condensate, eliminating the need for separate heating and evaporation components. The condensate treatment can be completed using the waste heat of the refrigeration system itself, balancing low cost and high safety.

[0008] Preferably, the water storage box is internally divided into a heating and evaporation area and an anti-backflow area, which are connected by a connecting hole. The water inlet is located at one end of the anti-backflow area, and the bottom surfaces of both the heating and evaporation area and the anti-backflow area are inclined towards the connecting hole. The internal partition design of the water storage box prevents water vapor or unevaporated condensate generated during the heating and evaporation process from flowing back into the evaporator or refrigeration chamber, thus avoiding secondary frost or condensate contamination.

[0009] Preferably, a water guide plate is provided at the bottom of the anti-backflow zone near the connecting hole. The two ends of the water guide plate are obliquely arranged water guide wings. On the one hand, it can guide the condensate flowing into the anti-backflow zone, accelerate the flow of condensate towards the connecting hole, and prevent condensate from accumulating in the anti-backflow zone. On the other hand, the water guide plate and its oblique wings form a physical barrier structure, which further enhances the anti-backflow effect. Even when the refrigerator is violently shaken or tilted, it can block the reverse impact of water flow and prevent backflow to the water inlet and evaporator side.

[0010] Preferably, the top of the anti-backflow area is sealed with a silicone cover plate. The end of the silicone cover plate near the water inlet is provided with a silicone baffle extending towards the bottom of the anti-backflow area. The silicone baffle forms the first physical barrier against backflow. Condensate can flow in the forward direction through the gap between the silicone baffle and the bottom of the anti-backflow area or through the elastic gap of the silicone itself. When a backflow tendency occurs, the silicone baffle will adhere tightly to the inner wall of the anti-backflow area under the impact of the water flow, blocking the backflow path.

[0011] Preferably, the bracket is equipped with an auxiliary fan that blows airflow into the heating and evaporation area. The bracket is also provided with multiple heat dissipation slots. The blown airflow can accelerate the air circulation inside the water storage box and promote the diffusion of water vapor. Combined with the heating effect of the heating element, a synergistic evaporation mechanism of heating and airflow disturbance is formed. Compared with the single heating and evaporation method, the evaporation efficiency is greatly improved. The heat dissipation slots can balance the air pressure inside and outside the water storage box, preventing the air pressure inside the water storage box from rising due to heating and evaporation, which would affect the discharge of water vapor. At the same time, it accelerates air circulation and, together with the auxiliary fan, further improves the evaporation efficiency.

[0012] Preferably, the upper side of the water storage box is provided with an inwardly folded sealing strip along the edge, which forms a sealing structure when the water storage box is installed with the supporting base plate, effectively preventing unevaporated condensate from overflowing from the installation gap between the water storage box and the supporting base plate.

[0013] Preferably, the heating element is coiled in an S-shape inside the heating and evaporation area and fixed by a pressure plate. The bottom of the bracket is equipped with a fixing strip to press down the part of the heating element that extends out of the water storage box. This arrangement greatly increases the contact area between the heating element and the condensate, making the heating more uniform, significantly improving the evaporation efficiency of the condensate, and shortening the evaporation time. At the same time, the pressure plate fixes the heating element to prevent the heating element from shifting, falling off, or colliding with the inner wall of the water storage box and causing abnormal noise due to refrigerator vibration.

[0014] Preferably, the evaporator is equipped with a heating wire that enables automatic defrosting, eliminating the need for manual defrosting and completely solving the tedious problem of manual defrosting in direct-cooling refrigerators, thus reducing the user's maintenance burden. When frost accumulates on the evaporator surface to a certain thickness, the heating wire activates, rapidly melting the frost and ensuring that the evaporator's heat exchange efficiency is not affected, maintaining the stable cooling performance of the vehicle refrigerator.

[0015] Preferably, an insulation backplate is installed on one side of the bracket, and the evaporator is installed on the insulation backplate. The insulation backplate matches the size of the opening and seals the opening. The insulation backplate provides good protection for the evaporator, preventing it from being damaged by collisions, wear, etc. during transportation, installation, or use, thus extending the service life of the evaporator. The insulation material filled in the insulation backplate can effectively reduce heat exchange between the evaporator and the external environment, reduce cold loss, and improve refrigeration efficiency.

[0016] Preferably, a pair of horizontally extending auxiliary connecting plates are provided on one side of the housing, and side connecting plates are provided vertically on both sides of the bracket. The side connecting plates are connected to the corresponding auxiliary connecting plates. The auxiliary connecting plates provide additional connection support points, making the connection between the housing and the refrigeration unit more balanced. The vertical corresponding connection between the side connecting plates and the auxiliary connecting plates makes the connection force evenly distributed along the vertical and horizontal directions, further improving the stability of the connection between the housing and the refrigeration unit, and adapting to complex working conditions such as bumps and vibrations in the vehicle environment.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The modular design, featuring a cabinet and a detachable refrigeration unit, allows for independent production, leak detection, and testing of the refrigeration unit. This avoids the risk of functional failure due to the inability to detect leaks in pre-embedded evaporators, while also preventing the scrapping of the entire unit caused by leaks in integrated designs. This significantly improves production yield and reduces manufacturing costs. The evaporator and fan, along with the air outlets and inlets of the refrigeration chamber, create a complete air-cooled circulation channel, resulting in a more uniform temperature distribution within the refrigeration chamber. The water storage box and heating element work together to heat and evaporate the condensate, eliminating the need for additional independent heating and evaporation components. The condensate treatment can be completed using the waste heat of the refrigeration system itself, balancing low cost and high safety. This design is suitable for the confined spaces and harsh operating conditions of vehicles. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the present invention; Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a three-dimensional structural diagram of the housing of the present invention; Figure 4 This is a three-dimensional structural diagram of the refrigeration unit of the present invention; Figure 5 This is a partial three-dimensional structural view of the refrigeration unit of the present invention; Figure 6 This is a partial three-dimensional structural view of the refrigeration unit of the present invention; Figure 7 This is a partial cross-sectional view of the present invention; Figure 8 This is a three-dimensional structural diagram of the water storage box of the present invention; Figure 9 This is a three-dimensional structural diagram of the water storage box of the present invention after the silicone cover is removed.

[0019] Attached reference numerals: 1. Refrigeration chamber; 12. Anti-backflow area; 13. Connecting hole; 14. Water guide plate; 15. Heat dissipation channel; 16. Water inlet; 17. Silicone cover plate; 18. Heating element; 19. Sealing strip; 2. Refrigeration unit; 21. Condenser; 22. Compressor; 23. Evaporator; 24. Fan; 25. Heating wire; 27. Bracket; 28. Insulation back plate; 29. ​​Side connecting plate; 3. Cabinet; 31. Installation cavity; 32. Auxiliary connecting plate; 33. Opening; 71. Silicone baffle; 8. Air inlet; 9. Air outlet; 10. Water storage box; 110. Fixing strip; 111. Pressure plate; 117. Heating and evaporation area; 116. Auxiliary fan. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] like Figure 1-9As shown, this invention provides a vehicle refrigerator with an independent air-cooled refrigeration system and condensate drying function, including a cabinet 3 and a detachable refrigeration unit 2. The cabinet 3 has a refrigerator cavity 1 inside, and a mounting cavity 31 adjacent to the refrigerator cavity 1 is provided on one side of the cabinet 3. An opening 33 is provided on one side of the mounting cavity 31. The refrigeration unit 2 includes a bracket 27 and a compressor 22, a condenser 21, and an evaporator 23 connected and working on the bracket 27. A fan 24 is installed above the evaporator 23. The bracket 27 is aligned with the opening 33, and after alignment, the evaporator 23 and the fan 24 are located within the mounting cavity 31. An air outlet 9 is provided on the side wall of the refrigerator cavity 1 at a position corresponding to the fan 24, and an air inlet 8 is provided below the evaporator 23. A water storage box 10 is installed on the lower side of the bracket 27. One end of the water storage box 10 is provided with a water inlet 16 corresponding to the position of the evaporator 23. A heating element 18 is installed in the water storage box 10 to heat and evaporate the condensate in the water storage box 3. The modular design of the box body and the overall detachable refrigeration unit is adopted. The refrigeration unit can be produced, leak-tested and tested separately, avoiding the risk of failure of the evaporator's pre-embedded function that cannot be leak-tested. At the same time, it avoids the problem of the whole machine being scrapped due to leakage in the integrated design, which significantly improves the production yield and reduces the manufacturing cost. The evaporator and the fan work together with the air outlet and air inlet of the refrigeration cavity to build a complete air-cooled circulation channel, making the temperature distribution inside the refrigeration cavity more uniform. The water storage box and the heating element work together to heat and evaporate the condensate. There is no need to add independent heating and evaporation components. The condensate treatment can be completed by using the waste heat of the refrigeration system itself, which takes into account both low cost and high safety.

[0022] In this embodiment, the water storage box 10 is internally divided into a heating and evaporation area 117 and an anti-backflow area 12, which are connected by a connecting hole 13. The water inlet 16 is located at one end of the anti-backflow area 12, and the bottom surfaces of both the heating and evaporation area 117 and the anti-backflow area 12 are inclined towards the connecting hole 13. The internal partition design of the water storage box prevents water vapor or unevaporated condensate generated during the heating and evaporation process from flowing back into the evaporator or refrigeration chamber, avoiding secondary frosting or condensate contamination. The water storage box 10 is internally divided into the heating and evaporation area 117 and the anti-backflow area 12 by a partition, with a flat connecting hole 13 in the middle of the vertical partition. The bottom surface of the heating and evaporation area 117 is inclined at a 7° angle to the horizontal, and the bottom surface of the anti-backflow area 12 is inclined at a 10° angle, both inclined towards the connecting hole 13.

[0023] In this embodiment, a water guide plate 14 is provided at the bottom of the anti-backflow area 12 near the connecting hole 13. The two ends of the water guide plate 14 are obliquely arranged water guide wings. On the one hand, it can guide the condensate flowing into the anti-backflow area, accelerate the flow of condensate towards the connecting hole, and prevent condensate from accumulating in the anti-backflow area. On the other hand, the water guide plate and its oblique wings form a physical barrier structure, which further enhances the anti-backflow effect. Even when the refrigerator is violently shaken or tilted, it can block the reverse impact of water flow and prevent backflow to the water inlet and evaporator side. Specifically, the water guide plate 14 is integrally injection molded with the water storage box 10, and the angle between the water guide wings and the main body of the water guide plate is 35°, and it is inclined towards the connecting hole 13.

[0024] In this embodiment, the top of the anti-backflow area 12 is sealed by a silicone cover plate 17. The end of the silicone cover plate 17 near the water inlet 16 is provided with a silicone baffle 71 extending towards the bottom of the anti-backflow area 12. The silicone baffle forms the first physical barrier against backflow. Condensate can flow in the positive direction through the gap between the silicone baffle and the bottom of the anti-backflow area or the elastic gap of the silicone itself. When backflow occurs, the silicone baffle will adhere tightly to the inner wall of the anti-backflow area under the impact of the water flow, blocking the backflow path. The silicone cover plate 17 is made of food-grade silicone and its size is precisely matched with the top opening of the anti-backflow area 12. It is fixed to the edge of the water storage box by a snap-fit ​​structure. The silicone baffle 71 is integrally formed with the silicone cover plate, and its bottom is far from the bottom surface of the anti-backflow area.

[0025] In this embodiment, an auxiliary fan 116 is installed on the bracket 27 to blow airflow into the heating and evaporation area 117. The bracket 27 is provided with multiple heat dissipation slots 15. The blown airflow can accelerate the air circulation in the water storage box and promote the diffusion of water vapor. Combined with the heating effect of the heating tube, a synergistic evaporation mechanism of heating and airflow disturbance is formed. Compared with the single heating and evaporation method, the evaporation efficiency is greatly improved. The heat dissipation slots can balance the air pressure inside and outside the water storage box, avoid the air pressure inside the water storage box from rising due to heating and evaporation, and prevent water vapor from being discharged. At the same time, it accelerates the air circulation and further improves the evaporation efficiency in conjunction with the auxiliary fan. Specifically, the auxiliary fan 116 is a 12V miniature DC fan. Two rectangular heat dissipation slots 15 are opened on the side and back of the bracket 27, which are evenly distributed at the corresponding positions of the condenser 21 and the compressor 22 to ensure smooth airflow.

[0026] In this embodiment, the upper side of the water storage box 10 is provided with an inwardly folded sealing strip 19 along the edge, which forms a sealing structure when the water storage box is installed with the supporting base plate, effectively preventing unevaporated condensate from overflowing from the installation gap between the water storage box and the supporting base plate. The sealing strip 19 is made of EPDM rubber and has an L-shaped cross section.

[0027] In this embodiment, the heating element 18 is coiled in an S-shape inside the heating and evaporation area 117 and fixed by a pressure plate 111. The bottom of the bracket 27 is equipped with a fixing strip 110 for pressing down the part of the heating element 18 that extends from the water storage box 10. This arrangement greatly increases the contact area between the heating element and the condensate, making the heating more uniform, significantly improving the evaporation efficiency of the condensate, and shortening the evaporation time. At the same time, the pressure plate fixes the heating element to prevent the heating element from shifting, falling off, or colliding with the inner wall of the water storage box and causing abnormal noise due to refrigerator vibration. Specifically, the heating element 18 is a seamless extension of the condenser 21 copper pipe, which is coiled in multiple S-shapes inside the heating and evaporation area 117.

[0028] In this embodiment, a heating wire 25 is installed inside the evaporator 23. The heating wire enables automatic defrosting, eliminating the need for manual defrosting by the user and completely solving the tedious problem of manual defrosting in direct-cooling refrigerators, thus reducing the user's maintenance burden. When frost accumulates on the evaporator surface to a certain thickness, the heating wire activates, rapidly melting the frost layer and ensuring that the heat exchange efficiency of the evaporator is not affected, maintaining the stable cooling performance of the vehicle refrigerator. Specifically, the heating wire 25 is made of nickel-chromium alloy and is embedded between the fins of the evaporator 23, with one section of heating wire corresponding to each fin. The heating wire is electrically connected to a temperature sensor and a controller. When the sensor detects that the evaporator surface temperature is below -5°C or the ice thickness exceeds 2mm, the controller automatically activates the heating wire for defrosting. The defrosting time is set to 4 minutes, and the power is automatically cut off and cooling is restored after defrosting is completed.

[0029] In this embodiment, an insulation backplate 28 is installed on one side of the bracket 27, and the evaporator 28 is installed on the insulation backplate 28. The insulation backplate 28 matches the size of the opening 33 and seals the opening 33. The insulation backplate 28 provides good protection for the evaporator, preventing it from being damaged by collisions, wear, etc. during transportation, installation, or use, thus extending the service life of the evaporator. The insulation material filled in the insulation backplate 28 can effectively reduce heat exchange between the evaporator and the external environment, reduce cold loss, and improve refrigeration efficiency. Specifically, the insulation backplate 28 is made of polyurethane insulation board with an aluminum foil moisture-proof layer on the surface. Its size is completely consistent with the opening of the installation cavity. The evaporator 23 is fixed to the mounting post on the inner side of the insulation backplate by multiple bolts. The edges of the insulation backplate 28 are provided with silicone sealing strips, so that it fits tightly with the opening of the box after assembly without gaps.

[0030] In this embodiment, a pair of horizontally extending auxiliary connecting plates 32 are provided on one side of the housing 1, and side connecting plates 29 are vertically provided on both sides of the bracket 27. The side connecting plates 29 are connected to the corresponding auxiliary connecting plates 32. The auxiliary connecting plates provide additional connection support points, making the connection between the housing and the refrigeration unit more balanced. The vertical corresponding connection between the side connecting plates and the auxiliary connecting plates makes the connection force evenly distributed along the vertical and horizontal directions, further improving the stability of the connection between the housing and the refrigeration unit, and adapting to complex working conditions such as bumps and vibrations in the vehicle environment. Specifically, the auxiliary connecting plate 32 is a PP plastic plate integrally injection molded from the housing 3, and the side connecting plate 29 is an integrally molded structure of the bracket 27. Bolts are used to connect the side connecting plate 29 through the through hole and the auxiliary connecting plate 32 through the threaded hole.

[0031] The specific assembly process in this embodiment includes the following steps: Refrigeration unit assembly: First, fix the compressor 22, condenser 21, and evaporator 23 to the bracket 27 with bolts, connect the refrigeration pipes and perform a leak test; then install the fan 24 above the evaporator 23, embed the heating wire 25 into the evaporator fins, and fix the auxiliary fan 116 to the side of the bracket; finally, fix the insulation back plate 28 to the left side of the bracket with clips to complete the overall assembly of the refrigeration unit.

[0032] Water storage box assembly: The heating element 18 is coiled in an S-shape in the heating and evaporation area 117 of the water storage box and fixed by the pressure plate 111; the silicone cover 17 is fastened to the top of the anti-backflow area 12 and the sealing strip 19 is fitted on the upper side folded edge of the water storage box; finally, the water storage box is installed on the lower side of the bracket 27 with fasteners to ensure that the water inlet 16 corresponds to the evaporator.

[0033] Assembly of the whole machine: Push the refrigeration unit 2 into the installation cavity 31 from the opening 33 of the housing 3 so that the heat insulation back plate 28 fits against the edge of the opening; fix the side connecting plate 29 and the auxiliary connecting plate 32 with bolts; connect the control module to the car power supply to complete the assembly of the whole machine.

[0034] The specific working principle includes the following steps: Refrigeration cycle: When the compressor 22 is started, the refrigerant is cooled and condensed by the condenser 21 and then flows into the evaporator 23 to evaporate and absorb heat, thereby cooling the air around the evaporator. When the fan 24 is started, it blows the low-temperature air into the cold storage chamber 1 through the air outlet 9. The air inside the cold storage chamber flows back to the evaporator 23 through the air inlet 8, forming a wind-cooled cycle and cooling the cold storage chamber.

[0035] Condensate collection: When the refrigerator compartment door is frequently opened and closed, humid air enters and comes into contact with the low-temperature inner wall and evaporator to produce condensate. The condensate flows along the inner wall of the refrigerator compartment to the bottom water guide trough, and then flows into the anti-backflow area 12 of the water storage box.

[0036] Condensate evaporation: Condensate in the anti-backflow zone 12 is guided by the inclined bottom surface and the water guide plate 14, and flows into the heating evaporation zone 117 through the connecting hole 13; the heating tube 18 uses the residual heat of the condenser 21 to heat the condensate, and the auxiliary fan 116 blows air into the heating evaporation zone to accelerate the evaporation of water vapor; the evaporated water vapor is discharged to the outside through the heat dissipation groove 15 on the bracket, thus completing the condensate treatment.

[0037] Defrosting control: When the temperature sensor detects that the surface temperature of the evaporator 23 is below -5℃ or the ice thickness exceeds 2mm, the control module starts the heating wire 25 to defrost. The melt water generated during defrosting flows into the water storage box and is processed according to the above-mentioned condensate evaporation process. After defrosting is completed, the heating wire is automatically turned off and the refrigeration cycle is restored.

[0038] Vehicle-grade compatibility: When the vehicle is bumpy or going uphill or downhill, the anti-backflow area 12 of the water storage box, the silicone baffle 71, the water guide side wings and the sealing strip 19 work together to prevent condensate from flowing back or overflowing; the modular fixing structure of the refrigeration unit ensures that there is no loosening under vibration environment, meeting the requirements for use in all vehicle-grade conditions.

[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0040] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A vehicle-mounted refrigerator with an independent air-cooling system and condensate drying function, characterized in that, The system includes a housing (3) and a detachable refrigeration unit (2). The housing (3) has a refrigeration chamber (1) inside. One side of the housing (3) has an installation cavity (31) adjacent to the refrigeration chamber (1). One side of the installation cavity (31) has an opening (33). The refrigeration unit (2) includes a bracket (27) and a compressor (22), a condenser (21), and an evaporator (23) mounted on the bracket (27) and connected to each other. A fan (24) is mounted above the evaporator (23). The bracket (27) and... The opening (33) is connected, and after the connection is completed, the evaporator (23) and the fan (24) are located in the installation cavity (31). The side wall of the refrigeration cavity (1) is provided with an air outlet (9) corresponding to the fan (24), and an air inlet (8) is provided below the evaporator (23). A water storage box (10) is installed on the lower side of the bracket (27). One end of the water storage box (10) is provided with a water inlet (16) corresponding to the evaporator (23). A heating tube (18) is installed in the water storage box (10) to heat the condensate in the evaporation water storage box (3).

2. The vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function according to claim 1, characterized in that: The interior of the water storage box (10) is divided into a heating and evaporation area (117) and an anti-backflow area (12). The heating and evaporation area (117) and the anti-backflow area (12) are connected by a connecting hole (13). The water inlet (16) is located at one end of the anti-backflow area (12), and the bottom surfaces of the heating and evaporation area (117) and the anti-backflow area (12) are inclined toward the connecting hole (13).

3. The vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function according to claim 2, characterized in that: A water guide plate (14) is provided at the bottom of the anti-backflow area (12) near the connecting hole (13), and the two ends of the water guide plate (14) are obliquely arranged water guide wings.

4. The vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function according to claim 3, characterized in that: The top of the backflow prevention area (12) is covered by a silicone cover plate (17), and a silicone baffle (71) extending towards the bottom of the backflow prevention area (12) is provided at one end of the silicone cover plate (17) near the water inlet (16).

5. The vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function according to claim 1, characterized in that: An auxiliary fan (116) is installed on the bracket (27) to blow air into the heating and evaporation area (117), and multiple heat dissipation slots (15) are provided on the bracket (27).

6. The vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function according to claim 1, characterized in that: The water storage box (10) has an inwardly folded sealing strip (19) on its upper side along the edge.

7. The vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function according to claim 1, characterized in that: The heating tube (18) is coiled in an S-shape inside the heating and evaporation area (117) and fixed by a pressure plate (111). The bottom of the bracket (27) is equipped with a fixing strip (110) for pressing down the part of the heating tube (18) that extends out of the water storage box (10).

8. The vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function according to claim 1, characterized in that: The evaporator (23) is equipped with a heating wire (25).

9. The vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function according to claim 1, characterized in that: The support (27) is equipped with a heat-insulating back plate (28) on one side, and the evaporator (28) is installed on the heat-insulating back plate (28). The heat-insulating back plate (28) matches the size of the opening (33) and seals the opening (33).

10. The vehicle-mounted refrigerator with an independent air-cooled refrigeration system and condensate drying function according to claim 7, characterized in that: The box (1) has a pair of horizontally extending auxiliary connecting plates (32) on one side, and the bracket (27) has vertically extending side connecting plates (29) on both sides, and the side connecting plates (29) are connected to the corresponding auxiliary connecting plates (32).

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