Refrigerating device and vehicle-mounted refrigerator

Abstract

The refrigerating device comprises a heat exchanger, an air duct shell, a fan and a plurality of heat exchange needles, the fan and the heat exchange needles are all arranged in the air duct shell, the air duct shell is provided with an air inlet and an air outlet, and the air inlet and the air outlet are used for being communicated with a refrigerator body. The draught fan is used for driving air in the air duct shell to flow from the air inlet to the air outlet, the multiple heat exchange needles are arranged in the same direction, the first ends of the heat exchange needles are fixedly connected with the heat exchanger, and a cooling channel allowing a refrigerant to circularly flow is formed in the heat exchanger. In the refrigerating device provided by the utility model, the heat exchanger exchanges heat with the hot air extracted from the refrigerator through the heat exchange needles, and the airflow can be in full contact with the whole circumferential surfaces of the heat exchange needles to exchange heat when passing through the gaps among the heat exchange needles. Higher-efficiency heat dissipation and cooling can be realized under the same volume requirement, so that the overall size of the vehicle-mounted refrigerator is reduced, and meanwhile, the cooling efficiency of the interior of the refrigerator body is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field, specifically, a refrigeration device and a vehicle refrigerator comprising the refrigeration device. BACKGROUND

[0002] With the progress of science and technology and the improvement of people's quality of life, more and more families begin to equip the vehicle refrigerator, most of the vehicle refrigerator on the market has independent refrigeration system, adopts independent compression refrigeration system or electronic component refrigeration system, these refrigeration systems usually include independent compressor, condenser and the like, so that the vehicle refrigerator has more parts and the overall structure is relatively large, which further leads to relatively small storage capacity of the refrigerator under certain volume limitation. And due to the limitation of the space in the vehicle, the heat exchange area of the above-mentioned independent refrigeration system is small, which leads to small cooling capacity of the vehicle refrigerator, slow refrigeration and long cooling time of the user experience.

[0003] To solve the problem, some vehicle refrigerators are designed to be integrated into the automobile thermal management system, that is, the refrigerator is cooled by the thermal management system of the automobile, for example, the refrigerant in the vehicle air conditioning circulation system flows through the refrigerator and absorbs heat, so as to cool the internal space of the refrigerator. However, due to the high requirement of the refrigerator on the heat dissipation and heat exchange efficiency, the heat exchange fins of the vehicle refrigerator are usually designed to be large in size, which leads to large overall design size of the air duct and affects the overall storage space of the vehicle refrigerator.

[0004] Therefore, how to provide a vehicle refrigerator refrigeration structure with small overall size and high refrigeration efficiency has become a technical problem to be solved in the field. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving one of the technical problems in the related art to some extent. To this end, the utility model provides a refrigeration device and a vehicle refrigerator comprising the refrigeration device, the refrigeration device has small overall size and high refrigeration efficiency.

[0006] To achieve the above-mentioned purpose, as one aspect of the utility model, a refrigeration device is provided for a vehicle refrigerator, the refrigeration device comprises a heat exchanger, an air duct shell, a fan and a plurality of heat exchange needles, the fan and the plurality of heat exchange needles are arranged in the air duct shell, the air duct shell has an air inlet and an air outlet for communicating with the box body, the fan is used to drive the gas in the air duct shell to flow from the air inlet to the air outlet, the plurality of heat exchange needles are arranged in the same direction, and the first end of the heat exchange needle is fixedly connected with the heat exchanger, and the heat exchanger has a cooling channel for circulating flow of refrigerant.

[0007] Optionally, the fan is located at the air outlet of the air duct shell.

[0008] Optionally, the fan is located at an air inlet of the air duct housing.

[0009] Optionally, the air inlet of the air duct housing is located at a top of the air duct housing, and the air outlet of the air duct housing is located at a bottom of the air duct housing.

[0010] Optionally, the refrigeration device comprises a plurality of the fans.

[0011] Optionally, a plurality of rows of the heat exchange needles are arranged in the air duct housing, and a distribution direction of each row of the heat exchange needles is transverse to a direction from the air inlet to the air outlet, and the plurality of rows of the heat exchange needles are distributed at intervals along the direction from the air inlet to the air outlet.

[0012] Optionally, projections of adjacent rows of the heat exchange needles along the direction from the air inlet to the air outlet are staggered.

[0013] Optionally, a spacing between the projections of adjacent rows of the heat exchange needles along the direction from the air inlet to the air outlet is half of a spacing between adjacent heat exchange needles in each row.

[0014] Optionally, the spacing between adjacent heat exchange needles in each row is 0.5-5 mm, and the row spacing between adjacent rows of the heat exchange needles is 0.5-5 mm.

[0015] Optionally, a gap between the second end of the heat exchange needle and an inner wall of the air duct housing is 0.5-5 mm.

[0016] Optionally, a diameter of the heat exchange needle is 0.1-2 mm.

[0017] Optionally, the heat exchanger comprises a refrigeration pipeline, a heat exchange housing, and a phase change cold storage material, the refrigeration pipeline passes through the heat exchange housing, a cooling passage is formed inside the refrigeration pipeline, and the phase change cold storage material is arranged in the heat exchange housing.

[0018] Optionally, the heat exchange housing comprises a casing and a cover, the casing comprises a surrounding cylinder, a bottom wall, and a mounting side plate, the surrounding cylinder is fixedly connected to one side of the mounting side plate and surrounds the mounting side plate to form an inner cavity accommodating the refrigeration pipeline, the bottom wall seals a bottom opening of the inner cavity, the cover is detachably fixedly connected to a top of the surrounding cylinder and seals a top opening of the inner cavity, and the air duct housing and the plurality of heat exchange needles are fixedly arranged on the other side of the mounting side plate.

[0019] Optionally, the heat exchanger further comprises a sealing strip, a first sealing groove is formed on the top end face of the surrounding cylinder and extends around the inner cavity, a second sealing groove is formed on the end face of the cover shell, and the sealing strip is accommodated in the first sealing groove and the second sealing groove and sealingly connects the cover shell and the surrounding cylinder.

[0020] Optionally, the top of the surrounding cylinder is formed with a pair of first avoiding grooves, the end face of the cover shell is formed with a second avoiding groove, the positions of the first avoiding grooves correspond to the position of the second avoiding groove, and the first avoiding grooves intersect with the first sealing grooves, and the second avoiding grooves intersect with the second sealing grooves.

[0021] A pair of pipeline sealing holes are formed in the sealing strip, the positions of the pipeline sealing holes correspond to the positions of the first avoiding grooves and the positions of the second avoiding grooves, and the two ends of the refrigeration pipeline pass through the pipeline sealing holes and extend to the outside of the heat exchange shell.

[0022] Optionally, the outer side wall of the surrounding cylinder has a plurality of first lug portions, the outer surface of the cover shell has a plurality of second lug portions, the plurality of first lug portions correspond one-to-one to the plurality of second lug portions, and the first lug portions and the corresponding second lug portions are detachably fixedly connected.

[0023] Optionally, the first lug portions and the corresponding second lug portions are detachably fixedly connected through threaded fasteners.

[0024] Optionally, the fan of the refrigeration device is fixedly arranged on the mounting side plate.

[0025] Optionally, the heat exchanger further comprises a pair of pipeline joints, and the pipeline joints are fixedly arranged at the two ends of the refrigeration pipeline.

[0026] Optionally, the refrigeration device further comprises a needle rib base, the first ends of the plurality of heat exchange needles are fixedly connected to the needle rib base, and the needle rib base is fixedly connected to the side wall of the heat exchange shell.

[0027] Optionally, the first ends of the heat exchange needles are welded to the needle rib base.

[0028] Optionally, the heat exchange needles and the needle rib base are integrally formed by machining or 3D printing technology.

[0029] Optionally, the air duct shell comprises a parallel plate and a pair of air duct side plates, the parallel plate is arranged in a spaced manner with the side wall of the heat exchange shell, the air duct side plates are connected between the opposite two side edges of the parallel plate and the side wall of the heat exchange shell, and the air inlet and the air outlet are formed at the positions of the other two side edges of the air duct side plates.

[0030] Optionally, the heat exchanger further comprises a plurality of fins, each of the plurality of fins being fixedly connected with the refrigeration pipeline.

[0031] Optionally, the refrigeration pipeline comprises a plurality of connection sections and a plurality of serpentine sections, the plurality of serpentine sections being arranged in parallel and spaced apart, and the spacing direction of the plurality of serpentine sections is parallel to the distribution plane of the plurality of heat exchange needles, the plurality of connection sections being connected between the end portions of adjacent serpentine sections and sequentially connecting the plurality of serpentine sections, the cross-sectional dimension of the serpentine section along the spacing direction is smaller than the cross-sectional dimension of the serpentine section along the length direction of the heat exchange needle, and the fins are arranged on at least one side of the serpentine section along the spacing direction.

[0032] Optionally, the fins comprise a plurality of heat exchange plates and a plurality of connecting bent plates, the plurality of heat exchange plates being arranged in parallel and spaced apart along the length direction of the serpentine section, the plurality of connecting bent plates being connected between the end portions of adjacent heat exchange plates and sequentially connecting the plurality of heat exchange plates, and the connecting bent plate is fixedly connected with the corresponding serpentine section.

[0033] As a second aspect of the present application, a vehicle-mounted refrigerator is provided, which comprises a box body and the refrigeration device provided by the present application, the box body has an outflow port and an inflow port, the air inlet of the air duct shell is communicated with the outflow port of the box body, and the air outlet of the air duct shell is communicated with the inflow port of the box body.

[0034] In the refrigeration device and the vehicle-mounted refrigerator provided by the present application, the cooling passage of the heat exchanger is used for being connected with the automobile thermal management system, the air duct shell is connected with the box body of the vehicle-mounted refrigerator, the fan drives the continuous flow of the gas in the air duct shell, the hot air in the box body enters the air duct shell through the air inlet, and fully contacts with the heat exchange needles in the process of flowing to the air outlet, so that the heat is transferred to the heat exchanger through the heat exchange needles, the refrigerant cooled by the work of the compressor of the automobile thermal management system flows into the cooling passage of the heat exchanger, and carries away the heat transferred by the heat exchange needles, thereby realizing the continuous cooling and temperature reduction of the internal space of the refrigerator box body.

[0035] In the present application, the heat exchanger exchanges heat with the hot air drawn out of the refrigerator through the heat exchange needles, and the plurality of heat exchange needles are arranged in the same direction, so that the airflow can fully contact and exchange heat with the entire circumferential surface of the heat exchange needles when passing through the gap between the heat exchange needles, thereby ensuring the contact area with the hot air through the design of the plurality of heat exchange needles, and compared with the existing fin heat exchange design, higher efficiency of heat dissipation and temperature reduction can be realized under the same volume requirement, thereby reducing the overall size of the vehicle-mounted refrigerator while ensuring the temperature reduction efficiency of the internal space of the refrigerator box body, and allowing the internal space of the refrigerator box body to have a larger volume under the same volume requirement.

[0036] Furthermore, the heat exchanger of the refrigeration device adopts a cold storage structure. The heat exchanger includes refrigeration pipes, a heat exchange shell, and a phase change cold storage material. The refrigerant flowing through the refrigeration pipes does not directly exchange heat with the heat exchange needles, but first cools the phase change cold storage material, and then the phase change cold storage material absorbs the heat from the heat exchange needles. This can effectively reduce the number of compressor start-stop cycles in the vehicle's thermal management system, extend the compressor's service life, and ensure continuous and stable cooling of the vehicle refrigerator, thereby ensuring the stability of the internal temperature of the vehicle refrigerator. Attached Figure Description

[0037] The present invention will be further described below with reference to the accompanying drawings:

[0038] Figure 1 This is a schematic diagram of the structure of the refrigeration device provided in this embodiment of the utility model;

[0039] Figure 2 This is a schematic diagram of the structure of the refrigeration device provided in this embodiment of the present invention after the heat exchange shell and the air duct shell have been cut open;

[0040] Figure 3 This is a schematic diagram of the structure of the refrigeration device provided in this embodiment of the present invention after the heat exchange shell and the air duct shell have been cut open;

[0041] Figure 4 This is a cross-sectional structural schematic diagram of the refrigeration device provided in this embodiment of the utility model;

[0042] Figure 5 This is a schematic diagram showing the distribution of heat exchange needles on the needle rib base in the refrigeration device provided in this embodiment of the utility model;

[0043] Figure 6 This is a schematic diagram of the internal structure of the heat exchanger in the refrigeration device provided in this embodiment of the utility model.

[0044] Explanation of reference numerals in the attached figures:

[0045] Heat exchanger 100; refrigeration piping 110; connecting section 111; meandering section 112; pipe joint 113; heat exchange shell 120; housing 121; surrounding cylinder 121a; mounting side plate 121b; cover 122; first lug 123; sealing strip 130; rib 140; heat exchange plate 141; connecting bend 142; air duct shell 210; fan 220; heat exchange needle 231; needle rib base 232; air inlet a; air outlet b. Detailed Implementation

[0046] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0047] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0048] To address the aforementioned technical problems, as one aspect of this utility model, a refrigeration device is provided for use in a vehicle-mounted refrigerator, such as... Figures 1 to 4 , Figure 6 As shown, the refrigeration device includes a heat exchanger 100, a duct housing 210, and a fan 220. Figure 3 The fan 220 and multiple heat exchange needles 231 are both disposed in the air duct housing 210. The air duct housing 210 has an air inlet a and an air outlet b for communicating with the box body. The fan 220 is used to drive the gas in the air duct housing 210 to flow from the air inlet a to the air outlet b. The multiple heat exchange needles 231 are arranged in the same direction, and the first end of the heat exchange needle 231 is fixedly connected to the heat exchanger 100. The heat exchanger 100 has a cooling passage for the refrigerant to circulate.

[0049] Understandably, the cooling passage of the heat exchanger 100 is used to connect to the vehicle's thermal management system, the air duct housing 210 is connected to the cabinet of the vehicle refrigerator, and the fan 220 drives the gas in the air duct housing 210 to flow continuously, so that the hot air in the cabinet enters the air duct housing 210 from the air inlet a and comes into full contact with the heat exchange needle 231 as it flows to the air outlet b, so that the heat is transferred to the heat exchanger 100 through the heat exchange needle 231. The refrigerant cooled by the compressor of the vehicle's thermal management system flows into the cooling passage of the heat exchanger 100 and carries away the heat transferred from the heat exchange needle 231, thereby achieving continuous cooling of the internal space of the refrigerator cabinet.

[0050] In the refrigeration device provided by this utility model, the heat exchanger 100 exchanges heat with the hot air extracted from the refrigerator through heat exchange needles 231. Multiple heat exchange needles 231 are arranged in the same direction, so that the airflow can fully contact the entire circumferential surface of the heat exchange needles 231 when passing through the gaps between the heat exchange needles 231. Thus, the design of multiple heat exchange needles 231 ensures the contact area with the hot air. Compared with the existing fin heat exchange design, it can achieve higher heat dissipation and cooling efficiency under the same volume requirements. In this way, while reducing the size of the refrigeration device, it can ensure the cooling efficiency of the refrigerator body, and allow the refrigerator body to have a larger volume under the same volume requirements.

[0051] In some optional embodiments of this utility model, the fan 220 can be installed at the air outlet b of the duct housing 210; or, optionally, as Figure 2 , Figure 4 As shown, the fan 220 is located at the air inlet a of the air duct housing 210.

[0052] As an optional embodiment of this utility model, such as Figure 2 , Figure 4 As shown, the air inlet a of the air duct housing 210 is located at the top of the air duct housing 210, and the air outlet b of the air duct housing 210 is located at the bottom of the air duct housing 210.

[0053] As an optional embodiment of this utility model, such as Figure 2 As shown, the refrigeration unit includes multiple fans 220. For example, as Figure 2 As shown, the refrigeration unit may include three fans 220.

[0054] As an optional embodiment of this utility model, the length direction of the heat exchange needle 231 is perpendicular to the direction from the air inlet a to the air outlet b, for example, when the air inlet a is located at the top and the air outlet b is located at the bottom. Figure 2 , Figure 4 As shown, the heat exchange needle 231 is arranged in a horizontal direction.

[0055] As an optional embodiment of this utility model, such as Figure 2 , Figure 5 As shown, the air duct housing 210 is provided with multiple rows of heat exchange needles 231. The distribution direction of each row of heat exchange needles 231 intersects the direction from air inlet a to air outlet b, and the multiple rows of heat exchange needles 231 are distributed at intervals along the direction from air inlet a to air outlet b.

[0056] For example, such as Figure 2 , Figure 5 As shown, when the direction from the air inlet a to the air outlet b is vertical, each row of heat exchange needles 231 is horizontally distributed, and multiple rows of heat exchange needles 231 are vertically spaced.

[0057] As an optional embodiment of this utility model, the heat exchange needles 231 in adjacent rows are staggered along the projection from the air inlet a to the air outlet b, for example, as... Figure 5 As shown, the horizontal projections of the heat exchange needles 231 in adjacent rows are staggered, so that the windward surface of each heat exchange needle 231 in the second row is staggered from the windward surface of the adjacent heat exchange needle 231 in the first row, and the windward surface of each heat exchange needle 231 in the third row is staggered from the windward surface of the adjacent heat exchange needle 231 in the second row, further ensuring that the airflow is in full contact with each heat exchange needle 231, thereby ensuring heat exchange efficiency.

[0058] As an optional embodiment of this utility model, the distance between the projections of the heat exchange needles 231 in adjacent rows along the direction from the air inlet a to the air outlet b is half of the distance d1 between adjacent heat exchange needles 231 in each row, that is, the adjacent heat exchange needles 231 in adjacent rows are staggered by a distance of d1 / 2.

[0059] As an optional embodiment of this utility model, such as Figure 5 As shown, the spacing d1 between adjacent heat exchange needles 231 in each row is 0.5mm-5mm, and the row spacing d2 between adjacent heat exchange needles 231 is 0.5mm-5mm.

[0060] As an optional embodiment of this utility model, such as Figure 4 As shown, the gap d3 between the second end of the heat exchange needle 231 and the inner wall of the air duct housing 210 is 0.5mm-5mm.

[0061] As an optional embodiment of this utility model, the heat exchange needle 231 has a circular cross-sectional shape.

[0062] Optionally, the diameter of the heat exchange needle 231 is 0.1mm-2mm.

[0063] Alternatively, in other embodiments of this utility model, the cross-sectional shape of the heat exchange needle 231 can also be rectangular, square, or hexagonal, octagonal, or other polygonal shapes.

[0064] In existing vehicle refrigerator designs, the refrigerator's cooling fins directly exchange heat with the refrigerant in the vehicle's thermal management system. This causes the refrigerator's operation to affect the compressor in the vehicle's thermal management system, leading to frequent compressor start-stop cycles, which reduces the compressor's lifespan. Furthermore, changes in the evaporation temperature of the vehicle's thermal management system can also cause temperature fluctuations in the vehicle refrigerator, affecting food refrigeration and preservation.

[0065] To solve this technical problem, as a preferred embodiment of this utility model, such as Figures 1 to 4 , Figure 6As shown, the heat exchanger 100 includes a refrigeration pipe 110, a heat exchange shell 120, and a phase change cold storage material. The refrigeration pipe 110 passes through the heat exchange shell 120, a cooling passage is formed inside the refrigeration pipe 110, and the phase change cold storage material is disposed in the heat exchange shell 120.

[0066] In this embodiment of the utility model, the heat exchanger 100 of the refrigeration device adopts a cold storage structure. The heat exchanger 100 includes a refrigeration pipe 110, a heat exchange shell 120 and a phase change cold storage material (not shown in the figure). The refrigerant flowing through the refrigeration pipe 110 does not directly exchange heat with the heat exchange needle 231, but first cools the phase change cold storage material, and then the phase change cold storage material absorbs the heat from the heat exchange needle 231.

[0067] Specifically, the phase change cold storage material can exchange heat with the refrigerant of the vehicle thermal management system and undergo rapid phase change when the compressor of the vehicle thermal management system is running. When the compressor stops running, the refrigerant no longer circulates and supplies liquid. At this time, the temperature of the cold storage material in the phase change cold storage box reaches the cold storage low temperature. The cold energy is transferred from the phase change cold storage material to the heat exchange needle 231, and then the air volume driven by the fan 220 is used for heat exchange, thereby removing the heat load in the vehicle refrigerator box.

[0068] The cold storage structure provided in this embodiment of the invention can reduce the number of compressor start-stop cycles in the vehicle thermal management system, extend the compressor's service life, and ensure continuous and stable cooling of the vehicle refrigerator, thereby ensuring the stability of the internal temperature of the vehicle refrigerator.

[0069] As an optional embodiment of this utility model, such as Figure 1 , Figure 4 , Figure 6 As shown, the heat exchange housing 120 includes a casing 121 and a cover 122. The casing 121 includes a surrounding cylinder 121a, a bottom wall, and a mounting side plate 121b. The surrounding cylinder 121a is fixedly connected to one side of the mounting side plate 121b and surrounds the mounting side plate 121b to form an inner cavity that accommodates the refrigeration pipe 110. The bottom wall seals the bottom opening of the inner cavity. The cover 122 is detachably fixedly connected to the top of the surrounding cylinder 121a and seals the top opening of the inner cavity. The air duct housing 210 and a plurality of heat exchange needles 231 are all fixedly disposed on the other side of the mounting side plate 121b.

[0070] As an optional embodiment of this utility model, such as Figure 2 , Figure 3 , Figure 6 As shown, the heat exchanger 100 also includes a sealing strip 130. The top end face of the casing 121a has a first sealing groove extending around the inner cavity, and the end face of the cover 122 has a second sealing groove. The sealing strip 130 is accommodated in the first sealing groove and the second sealing groove, and seals the cover 122 and the casing 121a.

[0071] As an optional embodiment of this utility model, such as Figure 2 , Figure 3 As shown, a pair of first clearance grooves are formed on the top of the casing 121a, and a second clearance groove is formed on the end face of the cover 122. The positions of the first clearance grooves and the second clearance grooves correspond to each other, and the first clearance grooves intersect with the first sealing grooves, and the second clearance grooves intersect with the second sealing grooves.

[0072] The sealing strip 130 has a pair of pipe sealing holes, the positions of which correspond to the positions of the first clearance groove and the second clearance groove. The two ends of the refrigeration pipe 110 pass through the pipe sealing holes and extend to the outside of the heat exchange housing 120.

[0073] As an optional embodiment of this utility model, such as Figure 1 As shown, the outer wall of the casing 121a has a plurality of first lugs 123, and the outer surface of the cover 122 has a plurality of second lugs. The positions of the plurality of first lugs 123 and the plurality of second lugs correspond one-to-one, and the first lugs 123 and the corresponding second lugs are detachably fixedly connected.

[0074] As an optional embodiment of the present invention, the first protruding ear 123 and the corresponding second protruding ear are detachably fixedly connected by threaded fasteners. Alternatively, in other embodiments of the present invention, the first protruding ear 123 and the corresponding second protruding ear can be connected to each other by means of buckles, adhesives, etc.

[0075] As an optional embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 4 As shown, the fan 220 of the refrigeration unit is fixedly mounted on the mounting side plate 121b.

[0076] Optionally, such as Figures 1 to 4 As shown, the heat exchanger 100 also includes a pair of pipe joints 113, which are fixedly disposed at both ends of the refrigeration pipe 110.

[0077] As an optional embodiment of this utility model, such as Figures 2 to 5 As shown, the refrigeration device also includes a needle-rib base 232, the first ends of a plurality of heat exchange needles 231 are fixedly connected to the needle-rib base 232, and the needle-rib base 232 is fixedly connected to the side wall (e.g., mounting side plate 121b) of the heat exchange housing 120.

[0078] Optionally, the needle rib base 232 is bonded to the outer side of the mounting side plate 121b.

[0079] As an optional embodiment of this utility model, the first end of the heat exchange needle 231 is welded to the needle rib base 232, or the heat exchange needle 231 and the needle rib base 232 can be formed as one piece, for example by machining or 3D printing technology.

[0080] As an optional embodiment of this utility model, such as Figure 1 As shown, the air duct housing 210 includes a parallel plate and a pair of air duct side plates. The parallel plate is spaced apart from the side wall of the heat exchange housing 120. The air duct side plates are connected between the opposite two sides of the parallel plate and the side wall of the heat exchange housing 120, and an air inlet a and an air outlet b are formed at the other two sides of the air duct side plates.

[0081] As an optional embodiment of this utility model, such as Figure 3 , Figure 6 As shown, the heat exchanger 100 also includes multiple fins 140, all of which are fixedly connected to the refrigeration pipes 110 to expand the heat exchange area between the refrigeration pipes 110 and the phase change cold storage material.

[0082] As an optional embodiment of this utility model, such as Figure 6 As shown, the refrigeration piping 110 includes multiple connecting sections 111 and multiple meandering sections 112. The multiple meandering sections 112 are arranged in parallel and spaced apart, and their spacing direction is parallel to the distribution surface of the multiple heat exchange needles 231. The multiple connecting sections 111 connect the ends of adjacent meandering sections 112 and connect the multiple meandering sections 112 sequentially. The cross-sectional dimension of the meandering section 112 along the spacing direction of the meandering section 112 is smaller than its dimension along the length direction of the heat exchange needles 231. The fins 140 are arranged on at least one side of the meandering section 112 along its spacing direction.

[0083] As an optional embodiment of this utility model, the rib 140 is connected to one side of the meandering section 112, and the rib 140 is arranged meanderingly along the length direction of the meandering section 112, so as to further increase the heat exchange area of ​​the refrigeration pipe 110 for absorbing heat from the phase change cold storage material.

[0084] Specifically, such as Figure 6 As shown, the rib 140 includes multiple heat exchange plates 141 and multiple connecting bends 142. The multiple heat exchange plates 141 are spaced apart along the length of the meandering section 112. The multiple connecting bends 142 are connected between the ends of adjacent heat exchange plates 141 and connect the multiple heat exchange plates 141 sequentially. The connecting bends 142 are fixedly connected to the corresponding meandering section 112.

[0085] As a second aspect of this utility model, a vehicle refrigerator is provided, which includes a cabinet and a refrigeration device provided by this utility model. The cabinet has an outlet and an inlet. The air inlet a of the air duct housing 210 is connected to the outlet of the cabinet, and the air outlet b of the air duct housing 210 is connected to the inlet of the cabinet.

[0086] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A refrigeration device for a vehicle-mounted refrigerator, the vehicle-mounted refrigerator comprising a housing, characterized in that, The refrigeration device includes a heat exchanger (100), a duct housing (210), a fan (220), and a plurality of heat exchange needles (231). The fan (220) and the plurality of heat exchange needles (231) are all disposed in the duct housing (210). The duct housing (210) has an air inlet (a) and an air outlet (b) for communicating with the housing. The fan (220) is used to drive the gas in the duct housing (210) to flow from the air inlet (a) to the air outlet (b). The plurality of heat exchange needles (231) are arranged in the same direction, and the first end of the heat exchange needle (231) is fixedly connected to the heat exchanger (100). The heat exchanger (100) has a cooling passage for the refrigerant to circulate.

2. The refrigeration device according to claim 1, characterized in that, The air duct housing (210) is provided with multiple rows of heat exchange needles (231). The distribution direction of each row of heat exchange needles (231) intersects the direction from the air inlet (a) to the air outlet (b), and the multiple rows of heat exchange needles (231) are distributed at intervals along the direction from the air inlet (a) to the air outlet (b).

3. The refrigeration device according to claim 2, characterized in that, The heat exchange needles (231) in adjacent rows are staggered from each other along the projection from the air inlet (a) to the air outlet (b).

4. The refrigeration device according to claim 2, characterized in that, The spacing between adjacent heat exchange needles (231) in each row is 0.5mm-5mm, and the row spacing between adjacent rows of heat exchange needles (231) is 0.5mm-5mm.

5. The refrigeration device according to claim 1, characterized in that, The gap between the second end of the heat exchange needle (231) and the inner wall of the air duct housing (210) is 0.5mm-5mm.

6. The refrigeration device according to claim 1, characterized in that, The diameter of the heat exchange needle (231) is 0.1mm-2mm.

7. The refrigeration apparatus according to any one of claims 1 to 6, characterized in that, The heat exchanger (100) includes a refrigeration pipe (110), a heat exchange shell (120), and a phase change cold storage material. The refrigeration pipe (110) passes through the heat exchange shell (120), the cooling passage is formed inside the refrigeration pipe (110), and the phase change cold storage material is disposed in the heat exchange shell (120).

8. The refrigeration device according to claim 7, characterized in that, The refrigeration device further includes a needle rib base (232), the first ends of the plurality of heat exchange needles (231) are fixedly connected to the needle rib base (232), and the needle rib base (232) is fixedly connected to the side wall of the heat exchange shell (120).

9. The refrigeration device according to claim 7, characterized in that, The heat exchanger (100) also includes a plurality of fins (140), all of which are fixedly connected to the refrigeration pipe (110).

10. A vehicle-mounted refrigerator, characterized in that, The vehicle refrigerator includes a housing and a refrigeration device as described in any one of claims 1 to 9. The housing has an outlet and an inlet. The air inlet (a) of the air duct housing (210) is connected to the outlet of the housing, and the air outlet (b) of the air duct housing (210) is connected to the inlet of the housing.

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