A direct-cooling vehicle-mounted refrigerator with cold accumulation function

Abstract

The application discloses a direct-cooling vehicle-mounted refrigerator with a cold storage function, which comprises a shell, an inner container arranged in the shell, a containing space formed between the shell and the inner container, a refrigeration assembly arranged in the containing space and used for cooling articles placed in the inner container, and a cold storage module arranged in the containing space and filled with a cold storage agent. The cold storage agent can store cold energy when the refrigeration assembly works and release cold energy when the refrigeration assembly stops working, so that the articles in the inner container can be continuously cooled. The cold storage agent in the cold storage module can store cold energy when the refrigeration assembly works and release cold energy to continuously cool when the refrigeration assembly stops working, so that the temperature in the inner container can be kept constant for a long time. Compared with the prior art, the application can save energy consumption and reduce the damage probability of the compressor.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle refrigerator technology, specifically to a direct-cooling vehicle refrigerator with cold storage function. Background Technology

[0002] A car refrigerator is a refrigeration device designed specifically for the automotive environment. It is usually located in the armrest between the driver and passenger seats. Its refrigeration principle is the same as that of a traditional household refrigerator, which uses a compressor to drive the refrigerant circulation to achieve refrigeration. It can meet the needs of users to refrigerate food, beverages or medicines during travel, camping or daily commutes.

[0003] Existing car refrigerators typically use a foam layer on the outside of the inner liner to preserve cold energy. This technology has significant shortcomings. Inappropriate selection of foam layer materials and unsuitable density can directly affect the duration of cold energy preservation. Moreover, existing car refrigerators usually use an independent compressor for refrigeration. When the compressor stops working, the temperature inside the refrigerator continues to rise, especially in hot summers when the temperature rises more rapidly. When the temperature reaches a certain value, the compressor starts running again. Due to the lack of continuous cold energy supply, the compressor will start and stop frequently, which greatly affects the car's range and causes significant range anxiety for car owners, impacting the user experience. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a direct-cooling vehicle refrigerator with cold storage function.

[0005] In a first aspect, this application provides a direct-cooling vehicle refrigerator with cold storage function, comprising: A shell, wherein an inner liner is provided inside the shell, and an accommodating space is formed between the shell and the inner liner; A refrigeration component is disposed within the accommodating space and is used to cool down items placed inside the inner liner; A cold storage module is disposed within the accommodating space. The cold storage module is filled with a cold storage agent, which is used to store cold energy when the refrigeration component is working and to release cold energy when the refrigeration component stops working, so as to continuously cool down the items placed inside the inner liner.

[0006] According to the technical solution provided in the embodiments of this application, the cold storage module is fixedly installed on the outer wall of the inner liner and is adapted to the shape of the inner liner. According to the technical solution provided in the embodiments of this application, the refrigeration component includes an evaporator, which is disposed on the outer wall of the inner liner. The two ends of the evaporator are an input end and an output end, respectively. The input end is connected to a condenser, and the output end is connected to a compressor.

[0007] According to the technical solution provided in the embodiments of this application, the refrigeration component further includes a coaxial tube. One end of the coaxial tube is provided with a first end and a fourth end, and the other end of the coaxial tube is provided with a second end and a third end. A first pipe and a second pipe are provided inside the coaxial tube. The first end and the second end are connected through the first pipe, and the third end and the fourth end are connected through the second pipe. The first end is connected to the condenser, the second end is connected to the input end, the third end is connected to the output end, and the fourth end is connected to the compressor.

[0008] According to the technical solution provided in the embodiments of this application, the first end is used to receive refrigerant from the automobile compressor, and an electronic expansion valve is provided between the second end and the input end.

[0009] According to the technical solution provided in the embodiments of this application, a fan is provided on the side wall of the inner liner. The fan has an air intake end and an air blowing end. A first opening and a second opening are provided on the inner liner. The air intake end is connected to the first opening, and the air blowing end is connected to the second opening. The fan is used to make the cold air inside the inner liner flow.

[0010] According to the technical solution provided in the embodiments of this application, a controller is provided on the side wall of the housing, and the controller is electrically connected to the electronic expansion valve; A sensor is also provided on the side wall of the inner liner. The sensor is electrically connected to the controller. The sensor is used to detect the internal temperature of the inner liner so that the controller can adjust the flow rate of refrigerant through the electronic expansion valve.

[0011] According to the technical solution provided in the embodiments of this application, a foaming layer is further provided in the accommodating space, and the foaming layer wraps the cold storage module.

[0012] According to the technical solution provided in the embodiments of this application, a heating film is also provided in the accommodating space.

[0013] According to the technical solution provided in the embodiments of this application, the compressor and the condenser are also used in the refrigeration cycle of an automotive air conditioning system.

[0014] In summary, this technical solution specifically discloses a direct-cooling vehicle refrigerator with cold storage function, including a shell, an inner liner inside the shell, and a receiving space between the shell and the inner liner. A refrigeration component is disposed within the receiving space to cool items placed inside the inner liner. A cold storage module is disposed within the receiving space and is filled with a cold storage agent. The cold storage agent can store cold energy when the refrigeration component is working and release cold energy when the refrigeration component stops working, thereby achieving the purpose of continuously cooling items inside the inner liner. By setting up a cold storage module, the refrigerant inside can store cold energy when the refrigeration components are working, and release the cold energy to continuously cool down when the refrigeration components stop working, thus delaying the temperature rise and keeping the internal environment of the inner tank constant for a longer period of time. Compared with the existing technology that achieves continuous cooling by constantly starting and stopping the compressor, this application can save energy consumption and reduce the probability of compressor damage. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a direct-cooling vehicle refrigerator with cold storage function.

[0016] Figure 2 This is an exploded view of a direct-cooling vehicle refrigerator with cold storage function.

[0017] Figure 3 This is a schematic diagram of the interior of a direct-cooling vehicle refrigerator with cold storage function.

[0018] Figure 4 This is a schematic diagram of the refrigerant flow direction.

[0019] Figure 5 This is a schematic diagram of a cold storage module.

[0020] Figure 6 for Figure 5 Exploded view.

[0021] Figure 7 This is a schematic diagram of airflow direction.

[0022] Labels in the diagram: 1. Shell; 2. Cold storage module; 3. Evaporator; 4. Coaxial tube; 5. Electronic expansion valve; 6. First opening; 7. Fan; 8. Controller; 9. Sensor; 10. Foaming layer; 11. Heating film; 12. Filling port; 13. Second opening; 14. First end; 15. Second end; 16. Third section; 17. Fourth end; 18. Fixing component; 19. Top cover. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Example 1 Please refer to Figures 1 to 3 As shown, a direct-cooling vehicle refrigerator with cold storage function includes: The shell 1 has an inner liner inside it, and a receiving space is formed between the shell 1 and the inner liner; A cooling component is disposed within the housing space and is used to cool down items placed inside the housing 1. The cold storage module 2 is located within the accommodating space and is filled with a cold storage refrigerant. During refrigeration operation, the cold energy acts on the items inside the inner liner to cool them. While the refrigeration components are operating, the cold storage refrigerant stores the cold energy. Thus, when the refrigeration components are working, the cold energy acts on both the items and the cold storage module 2. When the refrigeration components stop cooling the vehicle refrigerator, they stop releasing the cold energy. At this time, the cold storage refrigerant takes over from the refrigeration components and releases the stored cold energy to maintain the cooling operation of the items inside the inner liner, thereby achieving continuous cooling of the items.

[0026] It also includes a top cover 19, which is located on top of the housing 1 and can fix the housing 1 and the inner liner together.

[0027] Furthermore, the cold storage module 2 is fixedly installed on the outer wall of the inner liner and is adapted to the shape of the inner liner.

[0028] The shape and structure of the cold storage module 2 are not limited here. The cold storage module 2 and the inner liner are designed to conform to the shape, and the cold storage module 2 and the inner liner can be connected by welding.

[0029] Furthermore, the refrigeration assembly includes an evaporator 3, which is disposed on the outer wall of the inner tank. The two ends of the evaporator 3 are an input end and an output end, respectively. The input end is connected to the condenser, and the output end is connected to the compressor.

[0030] Among them, the evaporator 3 is a continuous curved shape, which can be in the form of a coil or an expansion plate and is set on the outer wall of the inner liner to ensure that it can have a sufficient contact area with the inner liner, efficiently absorb the temperature inside the inner liner, reduce the internal environment of the inner liner, and achieve rapid cooling of items placed inside the inner liner. It should be noted that the direct-cooling vehicle refrigerator with cold storage function of this application shares a compressor and condenser with the car air conditioner. The refrigerant circulating in the evaporator 3 comes from the car compressor. That is, by starting the car compressor, the refrigerant can be delivered to the condenser and then to the evaporator of the vehicle refrigerator. When the refrigerant stops being delivered, in order to ensure continuous cooling of the items placed inside the inner liner, a cold storage module 2 is provided. The cold storage agent inside the module absorbs and stores cold energy when the refrigeration components are cooling. After the refrigerant stops being delivered, the cold storage agent releases the stored cold energy into the inner liner environment to achieve the purpose of continuous cooling. Meanwhile, the vehicle refrigerator shares a compressor with the car air conditioner. Compared with the existing technology where the vehicle refrigerator and the car air conditioner use separate compressors, this application occupies less space and has a higher degree of integration. In existing technologies, vehicle refrigerators use independent compressors. When the internal temperature of the vehicle refrigerator reaches the lower limit, the compressor stops, and the internal temperature of the vehicle refrigerator begins to rise. When the internal temperature of the vehicle refrigerator reaches the upper limit, the compressor starts working again. This continuous start-stop method results in significant energy waste. In contrast, this application sets up a cold storage module 2 that stores cold energy while the refrigeration unit is cooling the inner liner. It shares a compressor with the vehicle's air conditioning system. When the internal temperature of the vehicle refrigerator reaches the lower limit, it is only necessary to stop supplying refrigerant to the evaporator. At the same time, the cold storage module 2 releases the stored cold energy to achieve continuous cooling and avoid energy waste.

[0031] Furthermore, the refrigeration assembly also includes a coaxial tube 4, one end of which is provided with a first end 14 and a fourth end 17, and the other end of which is provided with a second end 15 and a third end 16. The coaxial tube 4 has a first pipe and a second pipe in contact inside it. The first end 14 and the second end 15 are connected through the first pipe, and the third end 16 and the fourth end 17 are connected through the second pipe. The first end 14 is connected to the condenser, the second end 15 is connected to the input end, the third end 16 is connected to the output end, and the fourth end 17 is connected to the compressor.

[0032] Specifically, such as Figure 4 As shown, the car compressor delivers refrigerant to the condenser, which then delivers the refrigerant to the first end 14. The refrigerant passes through the first pipe and is delivered to the input end from the second end 15. Subsequently, the refrigerant enters the evaporator 3 and flows inside, absorbing heat from the inner liner to achieve the purpose of cooling the inner liner. Then, it flows from the output end to the third end 16, and from the third end 16, the refrigerant enters the second pipe, and is then delivered to the compressor from the fourth end 17. By setting the coaxial tube 4, pipe losses can be reduced, the system heat exchange efficiency can be improved, and space occupation can be reduced.

[0033] Furthermore, an electronic expansion valve 5 is provided between the second end 15 and the input end; Specifically, the compressor delivers the refrigerant in high-temperature, high-pressure gaseous form to the condenser, which converts the refrigerant into a low-temperature, high-pressure liquid form. The liquid is then delivered to the first end 14, and from there, the refrigerant enters the first pipe and is delivered to the second end 15. Subsequently, the refrigerant passes through the electronic expansion valve 5 and is converted into a low-temperature, low-pressure liquid form. It then enters the evaporator 3 from the input end. Because the refrigerant temperature is low, it can absorb heat from the inside of the evaporator 3 and is discharged from the output end as a high-temperature, low-pressure gas, returning to the compressor. The compressor then converts the refrigerant back into a high-temperature, high-pressure gas form for output, thus achieving cyclic refrigeration.

[0034] Furthermore, a fan 7 is installed on the side wall of the inner liner, which is used to turbulent the airflow inside the inner liner.

[0035] Specifically, when the refrigerant flows through the evaporator 3 to cool the inside of the inner tank, the fan 7 is activated to turbulent the internal environment of the inner tank, accelerate the low-temperature cycle, improve the cooling efficiency, and make the temperature inside the inner tank more uniform. like Figures 5 to 7 As shown, a first opening 6 and a second opening 13 are provided on the side wall of the inner liner. The fan 7 has an air intake end and an air blowing end. The air intake end is connected to the first opening 6, and the air blowing end is connected to the second opening 13. A fixing member 18 is also provided on the side wall of the inner liner. The fan 7 is mounted on the fixing member 18, and the fixing member 18 covers the first opening 6 and the second opening 13. Thus, the inside of the fixing member 18 and the inside of the inner liner form a sealed space. When the fan 7 is started, the airflow enters the air intake end from the first opening 6 and is output to the second opening 13 from the air blowing end, disturbing the gas inside the inner liner, realizing turbulence, accelerating the cold air circulation, improving the cooling efficiency, and making the temperature inside the inner liner more uniform.

[0036] Furthermore, a controller 8 is provided on the side wall of the housing 1, and the controller 8 is electrically connected to the electronic expansion valve 5.

[0037] Furthermore, a sensor 9 is also provided on the side wall of the inner liner. The sensor 9 is electrically connected to the controller 8. The sensor 9 is used to detect the internal temperature of the inner liner so that the controller 8 can regulate the flow rate of refrigerant through the electronic expansion valve 5.

[0038] Specifically, sensor 9 monitors the internal temperature of the inner liner in real time. When the internal temperature reaches the set upper limit, it indicates that the internal temperature of the inner liner is too high. At this time, controller 8 opens electronic expansion valve 5, and refrigerant flows into evaporator 3 through electronic expansion valve 5 to cool the inside of the inner liner. When the internal temperature of the inner liner reaches the set lower limit, it indicates that the internal temperature of the inner liner is too low and no further cooling is needed. Controller 8 closes electronic expansion valve 5 to prevent refrigerant from continuing to flow into evaporator 3 and stops cooling the inside of the inner liner. When the internal temperature of the inner liner is between the set upper limit and the set lower limit, controller 8 controls electronic expansion valve 5 to control the flow rate of refrigerant through electronic expansion valve 5.

[0039] The space is also equipped with a foam layer 10 for heat preservation of the inner liner; Specifically, the foam layer 10 is placed inside the containment space to achieve the purpose of heat preservation, retain cold energy, and keep the interior of the liner in a state of continuous low temperature.

[0040] A heating film 11 is also installed inside the containment space, and the heating film 11 is electrically connected to the controller 8.

[0041] Specifically, the direct-cooling vehicle refrigerator with cold storage function of this application belongs to the category of refrigerators that can be used for both cooling and heating. The refrigeration component can cool the interior of the liner. When cooling is not required, the electronic expansion valve 5 is closed by the controller 8 to cut off the refrigerant passage. When heating is required, the heating film 11 is energized to release heat and realize the heating function.

[0042] It should be noted that, as Figure 3 As shown, the cold storage module 2 is provided with a filling port 12 for adding cold storage agent into the cold storage module 2.

[0043] Working principle: When the compressor is started, the refrigerant is delivered to the first end 14 of the coaxial tube 4, flows through the first pipe and the second end 15, passes through the electronic expansion valve 5, and is then delivered from the input end to the evaporator 3. At this time, the low-temperature, low-pressure liquid refrigerant passes through the evaporator 3, absorbs heat from the inner tank, and is transformed into a high-temperature, low-pressure gas, which is output from the output end. It then returns to the compressor through the third end 16, the second pipe, and the fourth end 17. During the process of the refrigerant flowing through the evaporator 3, the low-temperature, low-pressure liquid refrigerant absorbs heat from the inner tank, lowering the temperature inside the inner tank and achieving the purpose of cooling. At the same time, during the process of the refrigerant absorbing heat, the cold storage module 2 can store cold energy so that when the refrigeration component stops cooling, the cold storage can release the stored cold energy to achieve the purpose of continuous cooling. This application discloses a direct-cooling vehicle refrigerator with cold storage function that shares a compressor and condenser with the car air conditioner. When the compressor is working, it cools the interior environment of the car. By opening the electronic expansion valve 5 through the controller 8, refrigerant can enter the evaporator 8 to cool the interior environment of the liner. At the same time, the cold storage agent stores cold energy. After the controller 8 closes the electronic expansion valve 5 to stop the refrigerant from flowing into the evaporator 3, the cold storage agent releases the stored cold energy to maintain continuous cooling, thus achieving the purpose of continuous cooling, delaying the temperature rise, and ensuring that the temperature inside the refrigerator remains constant for a longer period of time. At the same time, it can reduce the opening and closing frequency of the electronic expansion valve 5, extend its service life, and replace the method of shutting off the compressor to stop cooling in the prior art, saving energy and not affecting the normal cooling of the interior environment of the car.

[0044] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A direct-cooling vehicle-mounted refrigerator with cold storage function, characterized in that, include: A shell (1) is provided inside the shell (1), and an inner liner is provided inside the shell (1), forming an accommodating space between the shell (1) and the inner liner; A refrigeration component is disposed within the accommodating space and is used to cool down items placed inside the inner liner; A cold storage module (2) is provided in the accommodating space. The cold storage module (2) is filled with a cold storage agent. The cold storage agent is used to store cold energy when the refrigeration component is working and to release cold energy when the refrigeration component stops working, so as to continuously cool down the items placed inside the inner liner. The refrigeration assembly includes an evaporator (3) and a coaxial tube (4). The evaporator (3) is disposed on the outer wall of the inner liner. The coaxial tube (4) is used to connect the condenser and the compressor in the automotive air conditioning system. The two ends of the evaporator (3) are an input end and an output end, respectively. The input end is connected to the condenser, and the output end is connected to the compressor. One end of the coaxial tube (4) is provided with a first end (14) and a fourth end (17). The other end of the coaxial tube (4) is provided with a second end (15) and a third end (16). The coaxial tube (4) is provided with a first pipe and a second pipe inside. The first end (14) and the second end (15) are connected through the first pipe. The third end (16) and the fourth end (17) are connected through the second pipe. The first end (14) is connected to the condenser. The second end (15) is connected to the input end. The third end (16) is connected to the output end. The fourth end (17) is connected to the compressor. The compressor delivers refrigerant to the condenser, which then delivers the refrigerant via the coaxial tube (4) to the evaporator (3) to absorb heat from inside the inner liner and allow the cold storage module (2) to store cold energy. The gas formed in the evaporator (3) can then return to the compressor via the coaxial tube (4) to achieve cyclic refrigeration.

2. A direct-cooling vehicle refrigerator with cold storage function according to claim 1, characterized in that, The cold storage module (2) is fixedly installed on the outer wall of the inner liner and is adapted to the shape of the inner liner.

3. A direct-cooling vehicle refrigerator with cold storage function according to claim 1, characterized in that, An electronic expansion valve (5) is provided between the second end (15) and the input end.

4. A direct-cooling vehicle refrigerator with cold storage function according to claim 1, characterized in that, A fan (7) is provided on the side wall of the inner liner. The fan (7) has an air intake end and an air blowing end. A first opening (6) and a second opening (13) are provided on the inner liner. The air intake end is connected to the first opening (6), and the air blowing end is connected to the second opening (13). The fan (7) is used to make the cold air inside the inner liner flow.

5. A direct-cooling vehicle refrigerator with cold storage function according to claim 3, characterized in that, A controller (8) is provided on the side wall of the housing (1), and the controller (8) is electrically connected to the electronic expansion valve (5); A sensor (9) is also provided on the side wall of the inner liner. The sensor (9) is electrically connected to the controller (8). The sensor (9) is used to detect the internal temperature of the inner liner so that the controller (8) can adjust the flow rate of refrigerant through the electronic expansion valve (5).

6. A direct-cooling vehicle refrigerator with cold storage function according to claim 1, characterized in that, The containment space is further provided with a foam layer (10), which encloses the cold storage module (2).

7. A direct-cooling vehicle refrigerator with cold storage function according to claim 1, characterized in that, A heating film (11) is also provided in the accommodating space.

8. A direct-cooling vehicle refrigerator with cold storage function according to claim 1, characterized in that, The compressor and the condenser are also used in the refrigeration cycle of an automotive air conditioning system.

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