Vehicle-mounted refrigerator and vehicle

Abstract

The utility model discloses a vehicle-mounted refrigerator and a vehicle, and relates to the technical field of vehicles, the vehicle-mounted refrigerator comprises a box body, the box body is provided with a mounting chamber, a refrigeration chamber and an air duct communicating the mounting chamber and the refrigeration chamber; the evaporator is arranged in the mounting cavity and is opposite to the air duct; and the defrosting heater is embedded in the side, close to and / or away from the air duct, of the evaporator. According to the technical scheme, the overall occupied space of an existing evaporator and an existing defrosting heater is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, and in particular to a vehicle-mounted refrigerator and a vehicle. Background Technology

[0002] With increasing global awareness of environmental protection and the rapid development of the new energy vehicle industry, more and more new energy vehicles are being equipped with in-vehicle refrigerators to meet the refrigeration and preservation needs of passengers. As a core component of the refrigeration system, the performance of the evaporator directly affects the cooling effect of the in-vehicle refrigerator. However, in actual use, frost easily forms on the evaporator surface, affecting its heat transfer efficiency and thus reducing cooling performance. Therefore, a defrost heater is typically used to periodically remove the frost layer from the evaporator surface. However, the existing structural design of evaporators and defrost heaters occupies a large amount of space, making them unsuitable for installation in small spaces. Utility Model Content

[0003] The main purpose of this invention is to provide a vehicle-mounted refrigerator and vehicle that reduces the overall space occupied by existing evaporators and defrosting heaters.

[0004] To achieve the above objectives, this utility model provides a vehicle-mounted refrigerator, which includes:

[0005] The enclosure includes an installation chamber, a cooling chamber, and an air duct connecting the installation chamber and the cooling chamber.

[0006] An evaporator is disposed in the mounting chamber and is arranged opposite to the air duct; and

[0007] A defrost heater is embedded in the evaporator on the side near and / or away from the air duct.

[0008] In one embodiment, the defrosting heater includes a metal heating tube having a plurality of first bends arranged in a circuitous manner.

[0009] In one embodiment, the defrosting heater further includes a connecting metal pipe, and one of the metal heating pipes is respectively provided on the side of the evaporator near the air duct and the side away from the air duct, and the connecting metal pipe connects the two metal heating pipes.

[0010] In one embodiment, the evaporator includes a metal evaporator tube, heat exchange fins through which the metal evaporator tube passes, and side plates disposed on both sides of the heat exchange fins. The metal evaporator tube and the side plates are fixedly connected, and the defrost heater is at least embedded in the heat exchange fins.

[0011] In one embodiment, the heat exchange fins are provided with a first limiting groove, and the defrosting heater is at least partially engaged in the first limiting groove.

[0012] In one embodiment, the vehicle refrigerator further includes a support plate connected to the side plate, the support plate abutting against the lower surface of the connecting metal tube.

[0013] In one embodiment, the side plate is provided with a second limiting groove, the second limiting groove is located in the middle of the side plate, and the metal evaporation tube is locked in the second limiting groove;

[0014] And / or, the side plate is provided with a third limiting groove, the third limiting groove is provided at the edge of the side plate, and the metal heating tube is clamped in the third limiting groove.

[0015] In one embodiment, the metal evaporator tube has a plurality of meandering second bends, which are arranged at an angle or vertically.

[0016] In one embodiment, the vehicle refrigerator further includes a circulating fan disposed between the air duct and the evaporator, with the air outlet direction of the circulating fan facing the air duct.

[0017] In one embodiment, the vehicle refrigerator further includes a control board and a temperature sensor electrically connected to the control board. The temperature sensor is located in the mounting chamber and is used to detect the surface temperature of the evaporator. The control board is used to control the operating status of the evaporator and the defrost heater based on the temperature signal from the temperature sensor.

[0018] To achieve the above objectives, this utility model provides a vehicle, which includes a vehicle body and an on-board refrigerator disposed on the vehicle body, wherein the on-board refrigerator is the one described above.

[0019] The technical solution of this application, by arranging the evaporator and the air duct opposite each other, allows the cold air near the evaporator to flow more effectively into the air duct and then into the refrigeration chamber, achieving effective cooling of the refrigeration chamber. The defrost heater can exchange heat with the surface of the evaporator, thereby melting the frost layer on the evaporator surface and improving the evaporator's cooling performance. Moreover, the defrost heater is embedded on the side of the evaporator near and / or away from the air duct, which reduces the space occupied in the installation chamber in the height direction of the cabinet, making the layout of the evaporator and defrost heater more compact, which is beneficial for installation and use in vehicle refrigerators with limited space. At the same time, the increased contact area between the defrost heater and the evaporator can accelerate heat exchange efficiency, thereby improving the defrosting speed. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the vehicle-mounted refrigerator of this utility model;

[0022] Figure 2 This is a schematic diagram of the defrost heater and evaporator in an embodiment of the vehicle-mounted refrigerator of this utility model;

[0023] Figure 3 This is an exploded structural diagram of the defrost heater and evaporator in an embodiment of the vehicle-mounted refrigerator of this utility model.

[0024] Explanation of icon numbers:

[0025] 100. Cabinet; 110. Mounting chamber; 120. Refrigeration chamber; 130. Air duct; 200. Evaporator; 210. Metal evaporator tube; 220. Heat exchange fins; 221. First limiting slot; 230. Side plate; 231. Support plate; 232. Second limiting slot; 233. Third limiting slot; 300. Defrosting heater; 310. Metal heating tube; 320. Connecting metal tube; 410. Control board; 420. Temperature sensor.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment 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.

[0029] Furthermore, in the embodiments of this utility model, 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. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the embodiments of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this embodiment of the 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 embodiment of the invention according to the specific circumstances.

[0031] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When 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 protection scope claimed by the embodiments of this utility model.

[0032] With the continuous development of new energy vehicles and in-vehicle refrigerators, the proportion of in-vehicle refrigerators installed in new energy vehicles is constantly increasing. For in-vehicle refrigerators, the mainstream technology is direct cooling, which uses natural convection for compartment cooling. Compared to air-cooling technology, it has disadvantages such as slow cooling, the need for periodic manual power-off defrosting, and low heat exchange efficiency, resulting in a poor user experience. Therefore, air-cooling technology is gradually being applied to in-vehicle refrigerators. In existing in-vehicle refrigerators, the defrost heater is usually located below the evaporator, occupying a significant amount of space in the vertical direction, which is a problem that urgently needs to be solved for new energy vehicles with limited space.

[0033] In view of this, the present invention provides a vehicle refrigerator and vehicle, which reduces the space occupied by the defrost heater in the installation chamber in the height direction of the cabinet by embedding the defrost heater on the side of the evaporator close to and / or away from the air duct, making the layout of the evaporator and the defrost heater more compact, which is beneficial for installation and use in vehicle refrigerators with limited space.

[0034] To better understand the above technical solution, the following detailed explanation is provided in conjunction with the accompanying drawings.

[0035] like Figure 1 and Figure 2As shown in the figure, this utility model embodiment proposes a vehicle-mounted refrigerator, which includes:

[0036] The housing 100 includes an installation chamber 110, a refrigeration chamber 120, and an air duct 130 connecting the installation chamber 110 and the refrigeration chamber 120. The housing 100 is mounted on the vehicle body and consists of the installation chamber 110 and the refrigeration chamber 120, which are connected by the air duct 130. The installation chamber 110 is used to install some components of the refrigeration system. Refrigerated air enters the refrigeration chamber 120 through the air duct 130, and the refrigeration chamber 120 is used to store items for preservation or refrigeration. In one embodiment, the refrigeration chamber 120 can be divided into upper and lower chambers. The upper chamber may have a rotating and openable upper door, and the lower chamber may have a storage drawer and a front door. Similar structures are available and are not limited here.

[0037] An evaporator 200 is disposed in the mounting chamber 110 and is positioned opposite the air duct 130. Specifically, the refrigerant in the evaporator 200 absorbs heat to achieve cooling; and

[0038] A defrost heater 300 is embedded in the evaporator 200 on the side near and / or away from the air duct 130. Frost easily forms on the surface of the evaporator 200. The defrost heater 300 can defrost the surface of the evaporator 200 periodically or irregularly, ensuring the cooling effect of the evaporator 200. Optionally, the defrost heater 300 can be embedded on the side of the evaporator 200 near the air duct 130, or on the side away from the air duct 130, or simultaneously on both sides. In this embodiment, by embedding the defrost heater 300 in the evaporator 200, the space occupied in the height direction is reduced, and the space occupied in the depth direction is basically not increased. This fully utilizes the space of the installation chamber 110, making the overall structure more compact and more suitable for use in vehicle refrigerators with limited space, meeting the installation requirements of vehicle refrigerators in new energy vehicles with limited space.

[0039] In this embodiment, by arranging the evaporator 200 and the air duct 130 opposite to each other, the cold air near the evaporator 200 can flow better into the air duct 130 and then into the refrigeration chamber 120, achieving effective cooling in the refrigeration chamber 120. The defrost heater 300 can exchange heat with the surface of the evaporator 200, thereby melting the frost layer on the surface of the evaporator 200 and improving the cooling performance of the evaporator 200. Moreover, the defrost heater 300 is embedded on the side of the evaporator 200 near and / or away from the air duct 130, which can reduce the space occupied by the evaporator 200 in the vertical direction in the mounting chamber 110, making the layout of the evaporator 200 and the defrost heater 300 more compact, which is beneficial for installation and use in vehicle refrigerators with limited space. At the same time, the increased contact area between the defrost heater 300 and the evaporator 200 can accelerate heat exchange efficiency, thereby improving the defrosting speed.

[0040] In one embodiment of this utility model, reference is made to Figure 3 The defrosting heater 300 includes a metal heating tube 310, which has multiple meandering first bends. It is understood that the multiple first bends of the metal heating tube 310 meander along the surface of the evaporator 200, thereby increasing the contact area between the metal heating tube 310 and the evaporator 200, effectively improving heat exchange efficiency, and thus quickly removing the frost layer from the surface of the evaporator 200. Optionally, the metal heating tube 310 is an aluminum tube.

[0041] In one embodiment of this utility model, reference is made to Figure 3 The defrosting heater 300 also includes a connecting metal tube 320. One metal heating tube 310 is provided on the side of the evaporator 200 closest to the air duct 130 and the side furthest from the air duct 130. The connecting metal tube 320 connects the two metal heating tubes 310. It can be understood that the two metal heating tubes 310 are located on opposite sides of the evaporator 200 and are both embedded within the evaporator 200. This increases the contact area between the defrosting heater 300 and the evaporator 200 compared to using a single metal tube, significantly improving heat exchange efficiency and reducing the time required for the frost layer on the surface of the evaporator 200 to melt. Furthermore, the connection of the two metal heating tubes 310 via the connecting metal tube 320 allows for an integrated structural design. Optionally, the connecting metal tube 320 and the two metal heating tubes 310 can be integrally bent, reducing process complexity, decreasing the number of connecting parts, and improving connection reliability.

[0042] In one embodiment of this utility model, reference is made to Figure 3The evaporator 200 includes a metal evaporator tube 210, heat exchange fins 220 through which the metal evaporator tube 210 passes, and side plates 230 on both sides of the heat exchange fins 220. The metal evaporator tube 210 and the side plates 230 are fixedly connected, and the defrost heater 300 is at least embedded in the heat exchange fins 220. It is understood that the evaporator 200 in this embodiment is a finned evaporator 200, that is, it includes heat exchange fins 220 for heat exchange between the refrigerant and the external environment to achieve refrigeration. The metal evaporator tube 210 passes through the heat exchange fins 220 to allow refrigerant flow, thereby absorbing heat from the external environment. Optionally, multiple heat exchange fins 220 are spaced apart, and multiple heat exchange fins 220 are all through which the metal evaporator tube 210 passes. This increases the heat exchange area between the refrigerant and the external environment, improving the refrigeration speed. The side plate 230 is used to fix the metal evaporator tube 210. It is understood that the side plate 230 can be used to allow the metal evaporator tube 210 to pass through. In one embodiment, the length of the heat exchange fins 220 is less than the length of the side plate 230 along the depth direction of the vehicle refrigerator, so that a concave space can be formed on the evaporator 200. The defrost heater 300 is at least partially disposed in the concave space, thereby further reducing the space occupied.

[0043] In one embodiment of this utility model, reference is made to Figure 3 The heat exchange fins 220 are provided with a first limiting groove 221, and the defrost heater 300 is at least partially engaged in the first limiting groove 221. It can be understood that the first limiting groove 221 is provided on the surface of the heat exchange fins 220 facing away from the metal evaporator tube 210, which can fix the metal heating tube 310 on the one hand, and reduce the space occupied in the depth direction on the other hand.

[0044] In one embodiment of this utility model, reference is made to Figure 3 The vehicle-mounted refrigerator also includes a support plate 231, which is connected to the side plate 230 and abuts against the lower surface of the connecting metal pipe 320. It is understood that the support plate 231 provides support for the connecting metal pipe 320, improving the connection reliability between the defrost heater 300 and the evaporator 200. Optionally, the support plate 231 and the side plate 230 are integrally formed.

[0045] In one embodiment of this utility model, reference is made to Figure 3 The side plate 230 is provided with a second limiting slot 232, which is located in the middle of the side plate 230. The metal evaporation tube 210 is secured in the second limiting slot 232. The metal evaporation tube 210 can be fixed by the second limiting slot 232. It can be understood that the metal evaporation tube 210 is fixed on the side plate 230 by the second limiting slot 232, which is simple and convenient.

[0046] And / or, the side plate 230 is provided with a third limiting groove 233, the third limiting groove 233 is provided at the edge of the side plate 230, and the metal heating tube 310 is clamped in the third limiting groove 233. In this way, the metal heating tube 310 can be fixed on the side plate 230, realizing the fixed connection between the defrost heater 300 and the evaporator 200.

[0047] In one embodiment of this utility model, the metal evaporator tube 210 has multiple meandering second bends. This increases the heat exchange area while maintaining the same height, effectively improving heat exchange efficiency and achieving rapid cooling. The multiple second bends are inclined, further increasing the effective heat exchange area while keeping the height constant. Of course, the multiple second bends can also be arranged vertically, reducing space occupation. This can be chosen selectively in practical applications and is not limited here.

[0048] In one embodiment of this utility model, the vehicle refrigerator further includes a circulating fan, which is disposed between the air duct 130 and the evaporator 200, with the air outlet direction of the circulating fan facing the air duct 130. The circulating fan accelerates the flow of cold air near the evaporator 200 to the cooling chamber 120, achieving a rapid cooling effect.

[0049] In one embodiment of this utility model, reference is made to Figure 1 The vehicle-mounted refrigerator also includes a control board 410 and a temperature sensor 420 electrically connected to the control board 410. The temperature sensor 420 is located in the mounting chamber 110 and is used to detect the surface temperature of the evaporator 200. The control board 410 controls the operating status of the evaporator 200 and the defrost heater 300 based on the temperature signal from the temperature sensor 420. It is understood that when the control board 410 detects that the temperature from the temperature sensor 420 has reached the preset defrost temperature, the control board 410 sends a defrost signal to the defrost heater 300. At this time, the compressor and evaporator 200 stop working. After defrosting is complete, the control board 410 sends a restart signal to the compressor and evaporator 200, and the defrost heater 300 stops working. In this way, automatic control of the defrosting of the evaporator 200 can be achieved.

[0050] To achieve the above objectives, this utility model provides a vehicle comprising a vehicle body and an on-board refrigerator disposed on the vehicle body, wherein the on-board refrigerator is the one described above. Specifically, the specific structure of the on-board refrigerator refers to the above embodiment. Since this vehicle adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0051] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model embodiments. Any equivalent structural transformations made under the technical concept of the present utility model using the description and drawings of the present utility model embodiments, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model embodiments.

Claims

1. A vehicle-mounted refrigerator, characterized in that, The vehicle-mounted refrigerator includes: The enclosure includes an installation chamber, a cooling chamber, and an air duct connecting the installation chamber and the cooling chamber. An evaporator is disposed in the mounting chamber and is arranged opposite to the air duct; and A defrost heater is embedded in the evaporator on the side near and / or away from the air duct.

2. The vehicle-mounted refrigerator as described in claim 1, characterized in that, The defrosting heater includes a metal heating tube having a plurality of first bends arranged in a circuitous manner.

3. The vehicle-mounted refrigerator as described in claim 2, characterized in that, The defrosting heater also includes a connecting metal pipe. One of the metal heating pipes is provided on the side of the evaporator near the air duct and the other on the side away from the air duct. The connecting metal pipe connects the two metal heating pipes.

4. The vehicle-mounted refrigerator as described in claim 3, characterized in that, The evaporator includes a metal evaporator tube, heat exchange fins through which the metal evaporator tube passes, and side plates on both sides of the heat exchange fins. The metal evaporator tube and the side plates are fixedly connected, and the defrost heater is at least embedded in the heat exchange fins.

5. The vehicle-mounted refrigerator as described in claim 4, characterized in that, The heat exchange fins are provided with a first limiting groove, and the defrosting heater is at least partially locked in the first limiting groove.

6. The vehicle-mounted refrigerator as described in claim 4, characterized in that, The vehicle-mounted refrigerator also includes a support plate, which is connected to the side plate and abuts against the lower surface of the connecting metal tube.

7. The vehicle-mounted refrigerator as described in claim 4, characterized in that, The side plate is provided with a second limiting groove, which is located in the middle of the side plate, and the metal evaporation tube is locked in the second limiting groove. And / or, the side plate is provided with a third limiting groove, the third limiting groove is provided at the edge of the side plate, and the metal heating tube is clamped in the third limiting groove.

8. The vehicle-mounted refrigerator as described in claim 4, characterized in that, The metal evaporator tube has multiple meandering second bends, which are arranged at an angle or vertically.

9. The vehicle-mounted refrigerator as described in any one of claims 1 to 8, characterized in that, The vehicle refrigerator also includes a circulating fan, which is located between the air duct and the evaporator, and the air outlet direction of the circulating fan is towards the air duct.

10. The vehicle-mounted refrigerator as described in claim 9, characterized in that, The vehicle refrigerator also includes a control board and a temperature sensor electrically connected to the control board. The temperature sensor is located in the mounting chamber and is used to detect the surface temperature of the evaporator. The control board is used to control the working status of the evaporator and the defrost heater according to the temperature signal from the temperature sensor.

11. A vehicle, characterized in that, The vehicle includes a vehicle body and an onboard refrigerator disposed on the vehicle body, wherein the onboard refrigerator is an onboard refrigerator as described in any one of claims 1 to 10.

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