Heat exchanger and refrigerator
By setting vents on the heat sink and fins extending along the vents, the problem of low heat exchange efficiency of existing heat exchangers is solved, and more efficient heat exchange is achieved.
Patent Information
- Application Number
- CN202420572092.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-03-22
AI Technical Summary
The heat exchange efficiency of existing heat exchangers is low, resulting in the heat exchange coefficient of the entire heat exchanger not meeting the ideal requirements.
A plurality of vents are provided on the heat dissipation plate, and fins extending in the direction of the vent extension are provided on the periphery of the vent, and heat exchange is made with the fins when air flows through the vent.
By increasing the heat exchange area of the fins, the heat exchange efficiency of the heat exchanger is improved and the heat exchange coefficient is improved.
Smart Images
Figure CN222938315U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of refrigerators, and particularly relates to a heat exchanger and a refrigerator. Background Art
[0002] A heat exchanger is an energy-saving device that realizes heat transfer between materials among two or more fluids at different temperatures, which enables heat to be transferred from a fluid at a higher temperature to a fluid at a lower temperature, so that the temperature of the fluid reaches the specified index of the process, to meet the needs of the process conditions, and at the same time is one of the main devices for improving energy utilization efficiency.
[0003] At present, the fin heat transfer area of the heat exchanger is limited, and the heat transfer efficiency of the heat exchanger is not high, resulting in that the heat transfer coefficient of the entire heat exchanger cannot reach the ideal requirement. Utility Model Content
[0004] The present utility model provides a heat exchanger to solve the technical problem of low heat transfer efficiency of the heat exchanger in the prior art.
[0005] To achieve the above object, the heat exchanger proposed in the present application includes a heat dissipation plate, on which a plurality of ventilation openings are arranged at intervals, and fins are provided on the periphery of each ventilation opening, and the fins extend along the extending direction of the ventilation opening where the fins are located.
[0006] Optionally, in one embodiment, the heat exchanger further includes a connecting plate, the number of the heat dissipation plates is at least two, and the at least two heat dissipation plates are sequentially arranged at intervals on the connecting plate.
[0007] Optionally, in one embodiment, the at least two heat dissipation plates include a first heat dissipation plate and a second heat dissipation plate, the ventilation openings on the first heat dissipation plate and the ventilation openings on the second heat dissipation plate are arranged opposite to each other and communicated, and the fins on the first heat dissipation plate extend towards the side of the second heat dissipation plate, and the fins on the second heat dissipation plate extend towards the side of the first heat dissipation plate; and / or, the at least two heat dissipation plates are sequentially arranged at intervals along the extending direction of the ventilation openings.
[0008] Optionally, in one embodiment, the fins are arranged in a triangular shape around the ventilation opening.
[0009] Optionally, in one embodiment, the heat exchanger includes a plurality of connecting pipes, a plurality of channels arranged at intervals are formed on the heat dissipation plate, and each connecting pipe is used to connect two adjacent channels, so that the plurality of connecting pipes and the plurality of channels are connected in series.
[0010] Optionally, in one embodiment, the plurality of ventilation openings are arranged in an array on the heat dissipation plate, and one channel is arranged between adjacent two rows of ventilation openings.
[0011] Optionally, in one embodiment, a plurality of the connecting pipes are arranged at opposite ends of the heat dissipation plate, and the plurality of connecting pipes are offset on each end of the heat dissipation plate.
[0012] Optionally, in one embodiment, a plurality of the connecting pipes are all U-shaped pipes, and two ends of each U-shaped pipe are respectively connected to ports of two adjacent channels.
[0013] Optionally, in one embodiment, the heat dissipation plate is an integrally formed structure.
[0014] The present application also provides a refrigerator, which includes the heat exchanger described above.
[0015] In the heat exchanger provided by the present application, a plurality of ventilation openings are arranged on the heat dissipation plate, and air flows from one side of the heat dissipation plate to the other side of the heat exchanger through each ventilation opening. Since fins are arranged on the peripheries of all the ventilation openings, and each fin extends along the extending direction of the ventilation opening where it is located, when the heat exchanger works, air can exchange heat with the fins on the peripheries of all the ventilation openings. Compared with the prior art, the fins arranged on the peripheries of all the ventilation openings in the heat exchanger provided by the present application can all exchange heat with the air flow, thereby increasing the heat exchange area of the fins and improving the heat exchange efficiency of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0017] Figure 1 It is a schematic structural diagram of an embodiment of the heat exchanger of the present application;
[0018] Figure 2 It is a schematic structural diagram of another embodiment of the heat exchanger of the present application;
[0019] Figure 3 It is a schematic structural diagram of the heat dissipation plate of the present application;
[0020] Figure 4 It is a schematic structural diagram of the heat exchanger of the present application from another angle.
[0021] Explanation of the reference numerals in the drawings:
[0022]
[0023]
[0024] The realization of the purpose of this application, its functional characteristics and advantages will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners
[0025] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of this application.
[0026] The embodiments of this application provide a heat exchanger to solve the technical problem of low heat exchange efficiency of heat exchangers in the prior art. The following will be described in conjunction with the accompanying drawings.
[0027] In the embodiments of this application, as Figure 1 shown, the heat exchanger includes a heat dissipation plate 10, and a plurality of ventilation openings 11 are spaced on the heat dissipation plate 10. Fins 12 are provided at the peripheries of the ventilation openings 11, and the fins 12 extend along the extending direction of the ventilation openings 11 where they are located.
[0028] It should be noted that in the prior art, the fins used in heat exchangers are generally thin sheet structures, and multiple thin sheet-like fins are arranged in parallel. Due to the limitation of their own structures, the heat exchange area of the fins is limited, and the heat exchange efficiency of the heat exchanger is not high, resulting in the heat transfer coefficient of the entire heat exchanger not meeting the ideal requirements.
[0029] Therefore, in the heat exchanger provided in this application, a plurality of ventilation openings 11 are provided on the heat dissipation plate 10, and air flows from one side of the heat dissipation plate 10 through the ventilation openings 11 to the other side of the heat exchanger. Since the fins 12 are provided at the peripheries of the ventilation openings 11 and the fins 12 extend along the extending direction of the ventilation openings 11 where they are located, when the heat exchanger works, the air can exchange heat with the fins 12 at the peripheries of the ventilation openings 11. Compared with the fins 12 arranged in parallel in the prior art, which only have two surfaces for heat exchange, the fins 12 provided at the peripheries of the ventilation openings 11 in this application can all exchange heat with the air flow, thereby increasing the heat exchange area of the fins 12 and improving the heat exchange efficiency of the heat exchanger.
[0030] Specifically, in this embodiment, the heat exchanger can be a condenser. The heat dissipation plate 10 is arranged in a flat plate shape. The shape of the ventilation openings 11 can be circular, rectangular or other irregular shapes. All the fins 12 are located on the same side of the heat dissipation plate 10, and the fins 12 respectively surround the corresponding ventilation openings 11. When the heat exchanger works, the heat of the refrigerant is transferred to the fins 12 through the heat dissipation plate 10, and the fins 12 contact the air and exchange heat with the air, thereby realizing the heat exchange of the refrigerant.
[0031] Optionally, in one embodiment, please refer to Figures 2 - 4 , the heat exchanger further includes a connecting plate 20, and the number of heat dissipation plates 10 is at least two. At least two heat dissipation plates 10 are sequentially arranged at intervals on the connecting plate 20. It can be understood that by arranging a plurality of heat dissipation plates 10, the flow path of the refrigerant can be set longer, and at the same time, more fins 12 can be arranged, which is beneficial to increasing the heat exchange area of the fins 12 and achieving a better heat exchange effect.
[0032] Specifically, a plurality of heat dissipation plates 10 are arranged in parallel with each other. The connecting plate 20 is used to connect two adjacent heat dissipation plates 10. The heat dissipation plate 10 and the connecting plate 20 can be fixed by means of welding, riveting or screwing.
[0033] In some embodiments, a plurality of heat dissipation plates 10 and the connecting plate 20 can be an integrally formed structure, that is, the above-mentioned single-layer heat exchange structure can form a multi-layer heat exchange structure only through a bending process. In this way, while the heat exchanger has a good heat exchange effect, it can also reduce the production cost of the product and improve the installation efficiency of the heat exchanger.
[0034] Further, please refer to Figure 2 and Figure 3 , at least two heat dissipation plates 10 include a first heat dissipation plate 13 and a second heat dissipation plate 14. The ventilation openings 11 on the first heat dissipation plate 13 and the ventilation openings 11 on the second heat dissipation plate 14 are arranged opposite to each other and communicate with each other, and the fins 12 on the first heat dissipation plate 13 extend toward the side of the second heat dissipation plate 14, and the fins 12 on the second heat dissipation plate 14 extend toward the side of the first heat dissipation plate 13; and / or, at least two heat dissipation plates 10 are sequentially arranged at intervals along the extension direction of the ventilation opening 11.
[0035] Along the extension direction of the ventilation opening 11, the orthographic projections of the first heat dissipation plate 13 and the second heat dissipation plate 14 coincide with each other. The first heat dissipation plate 13 and the second heat dissipation plate 14 are arranged at intervals to form a double-layer heat exchange structure. When the heat exchanger works, air can exchange heat with the fins 12 on the first heat dissipation plate 13 and the fins 12 on the second heat dissipation plate 14 respectively, ensuring the heat exchange effect of the heat exchanger.
[0036] And the fins 12 on the first heat dissipation plate 13 and the fins 12 on the second heat dissipation plate 14 are arranged opposite to each other, which not only improves the aesthetic performance of the heat exchanger, but also can reduce the space occupied by the heat exchanger. At the same time, it can also prevent the fins 12 from being exposed outside the heat exchanger and avoid scratching users, ensuring safety performance.
[0037] Optionally, in one embodiment, please refer to Figure 2 and Figure 3, the fin 12 is triangular in shape, and a plurality of fins 12 provided in the same vent 11 are sequentially arranged around the edge of the vent 11. It can be understood that since the heat of the fin 12 is transferred through the heat dissipation plate 10, therefore, in the direction away from the heat dissipation plate 10, by setting the cross-sectional area of the fin 12 to be smaller and smaller, it is not only beneficial to ensure the heat exchange effect of the fin 12, but also can reduce the use of materials and lower the production and manufacturing cost. In addition, since a triangular fin 12 is provided on each side edge of the vent 11, the vent 11 and the plurality of fins 12 surrounding the vent 11 can be formed at one time by a stamping process, simplifying the forming process.
[0038] In this embodiment, the number of fins 12 on the periphery of each vent 11 is related to the shape of the vent 11. Exemplarily, when the shape of the vent 11 is rectangular, four fins 12 are provided on the periphery of each vent 11, and the four fins 12 are arranged corresponding to the four sides of the vent 11; when the shape of the vent 11 is triangular, three fins 12 are provided on the periphery of each vent 11, and the three fins 12 are arranged corresponding to the three sides of the vent 11. When the shape of the vent 11 is circular or elliptical, it is only necessary to ensure that a plurality of fins 12 can be arranged around the vent 11.
[0039] Optionally, in one embodiment, please refer to Figure 1 and Figure 2 , the heat exchanger includes a plurality of connecting pipes 30, and a plurality of spaced channels 15 are formed on the heat dissipation plate 10. Each connecting pipe 30 is used to connect two adjacent channels 15, so that the plurality of connecting pipes 30 are connected in series with the plurality of channels 15.
[0040] Specifically, as Figure 1 shown, the plurality of channels 15 are arranged at intervals along the length direction of the heat dissipation plate 10, and each channel 15 extends along the width direction of the heat dissipation plate 10. By connecting the plurality of connecting pipes 30 in series with the plurality of channels 15, a heat exchange channel for the refrigerant to flow can be formed. That is to say, in this embodiment, the heat exchanger does not need to be additionally provided with a heat exchange pipe, and directly uses a part of the structure of the heat dissipation plate 10 to form a heat exchange channel. When the refrigerant flows in the heat exchange channel, since the refrigerant is directly in contact with the heat dissipation plate 10, the heat of the refrigerant can be directly transferred to the fins 12 through the heat dissipation plate 10, solving the problem of large contact thermal resistance between the fins 12 and the heat exchange pipe in the prior art, and improving the heat exchange efficiency of the heat exchanger; in addition, since there is no need to separately provide a heat exchange pipe, the use of the heat exchange pipe is reduced, which is beneficial to saving product costs.
[0041] Optionally, in one embodiment, please refer to Figure 1 and Figure 2 , a plurality of vents 11 are arranged in an array on the heat dissipation plate 10, and a channel 15 is arranged between each adjacent two rows of vents 11.
[0042] Specifically, multiple ventilation openings 11 are arranged in a vertical and horizontal pattern. In the width direction of the heat dissipation plate 10, the distances between multiple ventilation openings 11 are the same; in the length direction of the heat dissipation plate 10, the distances between multiple ventilation openings 11 are the same, and multiple ventilation openings 11 and multiple channels 15 are arranged alternately. Since fins 12 are provided at the peripheries of the ventilation openings 11, through the above arrangement, it is ensured that the refrigerant in the channels 15 can uniformly exchange heat with the fins 12, thereby ensuring the heat exchange effect of the heat exchanger. In addition, the equal-spacing distribution of multiple ventilation openings 11 can also make the heat exchanger more beautiful.
[0043] Optionally, in one embodiment, please refer to Figure 1 and Figure 2 , multiple connecting pipes 30 are arranged at opposite ends of the heat dissipation plate 10, and multiple connecting pipes 30 are offset on each end of the heat dissipation plate 10. It can be understood that the multiple connecting pipes 30 are offset at both ends of the heat dissipation plate 10, so that the multiple connecting pipes 30 can be connected in series with the multiple channels 15, and at the same time, the length of the heat exchange channels can be increased, enabling the refrigerant to fully exchange heat with the fins 12.
[0044] Optionally, in one embodiment, please refer to Figure 1 and Figure 2 , multiple connecting pipes 30 are all U-shaped pipes, and both ends of each U-shaped pipe are respectively connected to the ports of two adjacent channels 15.
[0045] Specifically, both ends of the U-shaped pipe have an opening, and the interior of the U-shaped pipe is hollowed out so that the two openings communicate with each other. The distance between both ends of the U-shaped pipe is the same as the distance between two adjacent channels 15. During assembly, one end of the U-shaped pipe is hermetically connected to the port of one of the channels 15, and the other end of the U-shaped pipe is hermetically connected to the port of the adjacent channel 15, thereby connecting two adjacent channels 15 through the U-shaped pipe.
[0046] Furthermore, the U-shaped pipe is connected to the port of the channel 15 by interference fit. The end of the U-shaped pipe can be inserted into the port of the channel 15 by using the principle of thermal expansion and contraction, and then the connection between the U-shaped pipe and the channel 15 is further fixed by welding, thereby ensuring the connection strength between the U-shaped pipe and the heat dissipation plate 10, and having good sealing performance, and the refrigerant will not leak.
[0047] Optionally, in one embodiment, the heat dissipation plate 10 is an integrally formed structure. It can be understood that the heat dissipation plate 10 can be an aluminum plate. The aluminum plate is extruded to form multiple channels 15 arranged at intervals, and then multiple ventilation openings 11 and fins 12 are formed by stamping. Since aluminum has good thermal conductivity, light weight, and good corrosion resistance, the heat exchange effect between the integrally formed heat dissipation plate 10 and the fins 12 made of aluminum plate is better, and it is durable.
[0048] In addition, since the price of aluminum alloy materials sold by weight is only about one-third of that of copper materials, and the density of aluminum alloy materials is also only about one-third of that of copper materials, the material cost of the aluminum heat exchanger is only about one-ninth of that of a copper heat exchanger with the same heat exchange area and heat exchange volume. Therefore, in this embodiment, the use of the aluminum heat dissipation plate 10 not only improves the heat exchange efficiency but also reduces the cost of the heat exchanger.
[0049] The embodiment of the present application also provides a refrigerator, which includes a heat exchanger. The specific structure of the heat exchanger refers to the above embodiment. Since this refrigerator adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.
[0050] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features.
[0051] The heat exchanger provided by the embodiment of the present application has been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.
Claims
1. A heat exchanger, characterized in that: It comprises a heat dissipation plate, on which a plurality of vents are arranged at intervals, and a fin is arranged at the periphery of each vent. The fin extends along the extension direction of the vent where the fin is located, and a plurality of channels arranged at intervals are formed on the heat dissipation plate.
2. The heat exchanger according to claim 1, characterized in that: The heat exchanger further includes a connecting plate, the number of the heat dissipation plates is at least two, and the at least two heat dissipation plates are sequentially spaced apart from each other on the connecting plate.
3. The heat exchanger according to claim 2, characterized in that: The at least two heat dissipation plates include a first heat dissipation plate and a second heat dissipation plate, the vents on the first heat dissipation plate and the vents on the second heat dissipation plate are arranged opposite to each other and are connected, and the fins on the first heat dissipation plate extend toward one side of the second heat dissipation plate, and the fins on the second heat dissipation plate extend toward one side of the first heat dissipation plate; And / or, the at least two heat dissipation plates are sequentially arranged at intervals along the extension direction of the ventilation opening.
4. The heat exchanger according to claim 1, characterized in that: The fins are triangular in shape and are arranged around the vent.
5. The heat exchanger according to claim 1, characterized in that: The heat exchanger includes a plurality of connecting pipes, each of which is used to connect two adjacent channels, so that the plurality of connecting pipes are connected in series with the plurality of channels.
6. The heat exchanger according to claim 5, characterized in that A plurality of vent arrays are arranged on the heat sink, and one channel is disposed between each of two adjacent rows of vents.
7. The heat exchanger according to claim 5, characterized in that The plurality of connecting pipes are arranged at two opposite ends of the heat dissipation plate, and the plurality of connecting pipes are staggered on each end of the heat dissipation plate.
8. The heat exchanger according to claim 7, characterized in that The plurality of connecting tubes are all U-shaped tubes, and both ends of each U-shaped tube are respectively connected to ports of two adjacent channels.
9. The heat exchanger according to claim 1, characterized in that: The heat dissipation plate is an integrally formed structure.
10. A refrigerator, characterized in that: Comprising the heat exchanger according to any one of claims 1 to 9.