Lateral heat dissipation method and side-hung integrated phase change radiator

Abstract

According to the lateral heat dissipation method and the lateral hanging integrated phase change radiator, lateral heat dissipation lateral hanging type installation is adopted, and device heat can be absorbed from the side face. By establishing a gas-liquid circulation channel which laterally extends from the top of the evaporator to the end of the condenser through the top of the condenser and downwards flows back to the bottom of the condenser along with the end of the condenser to extend to the bottom of the evaporator, a device can be effectively cooled from the side face, and the installation height of the condenser can be reduced; and the height space of the whole radiator is reduced, so that the structure of the radiator is more compact.

Description

Technical Field

[0001] This invention relates to the field of radiator technology, specifically to a lateral heat dissipation method and a side-mounted integrated phase change radiator. Background Technology

[0002] The core of a phase change heat sink lies in utilizing the phase change material (PCM) during its transition between solid and liquid (or liquid and gaseous) states, absorbing a large amount of heat during the phase change process. When the temperature rises to the phase change temperature of the PCM, the material absorbs heat and transforms into a liquid or gaseous state, thereby effectively reducing the temperature of the surrounding environment. This process is approximately isothermal, which can maintain the operating temperature of the equipment for a short time, ensuring its safe and stable operation.

[0003] Current phase change heat sinks typically consist of an evaporator and a condenser. The evaporator contains a phase change medium, which is in contact with the device requiring cooling (such as an IGBT) to absorb its heat. The internal phase change medium, when heated, transforms into a gaseous state, passes through the condenser, cools, and then becomes a liquid, flowing back to the evaporator, thus maintaining a constant temperature for the device. Generally, phase change heat sinks are vertically installed, utilizing the principle of rising gaseous medium and descending liquid to naturally form a gas-liquid circulation channel. However, in some scenarios, the phase change heat sink needs to be side-mounted, meaning the evaporator is attached to the side of the device. In this case, the gaseous and liquid media cannot circulate naturally, placing higher demands on the design of the gas-liquid circulation channel.

[0004] To address this issue in existing technologies, the condenser is typically installed at a higher height than the contact area between the evaporator and the heat-receiving area of ​​the device (i.e., the heat-receiving area of ​​the evaporator). A pipe connection is also usually used between the evaporator and the condenser. This design still allows for the natural formation of a gas-liquid circulation channel based on the principle of rising gaseous fluid and descending liquid. However, this results in a larger vertical space occupied by the entire radiator. In some space-constrained applications where the height difference between the condenser and the heat-receiving device cannot be too large, or even when they are on the same level, establishing a gas-liquid circulation channel becomes difficult. Furthermore, in such applications, the initial liquid injection height in the evaporator is already close to the height of the condenser, further exacerbating the gas-liquid circulation failure. Summary of the Invention

[0005] To address the technical problem of establishing a gas-liquid circulation channel during side heat dissipation of devices, this invention provides a side heat dissipation method. The method includes a phase change heat sink comprising an evaporator and a condenser, wherein the evaporator and condenser have a connected gas-liquid exchange channel. After injecting a phase change medium into the evaporator, the method specifically includes the following steps: S1, the heat receiving area at the bottom of the evaporator is laterally attached to the heating device, and the condenser is laterally connected to the evaporator, so that the gas-liquid exchange channel extends laterally; S2, the gas-liquid exchange forms the following cycle, that is, it extends laterally from the top of the evaporator through the top of the condenser to the end of the condenser, and then flows downward through the bottom of the condenser to the bottom of the evaporator.

[0006] Furthermore, in step S2, a blocking element is deployed between the evaporator and the condenser, which blocks the middle region of the gas-liquid exchange channel but leaves the top and bottom regions of the gas-liquid exchange channel open.

[0007] Furthermore, in step S2, a downward-extending gas-liquid flow channel is opened at the end of the condenser. During the gas-liquid exchange cycle, the gas-liquid flow channel flows downward through the end of the condenser, passes through the bottom of the condenser, and extends back to the bottom of the evaporator.

[0008] A side-mounted integrated phase change radiator is also proposed, comprising an evaporator and a condenser. The evaporator is filled with a phase change medium and has a heat receiving area on one side. The opposite side of the heat receiving area is the evaporation area. The condenser is laterally connected to the evaporation area of ​​the evaporator. There is a laterally extended gas-liquid exchange channel between the evaporation area and the condenser. A blocking member is connected to the evaporation area, and the upper and lower ends of the blocking member are spaced apart from the upper and lower ends of the evaporation area, respectively.

[0009] Furthermore, both ends of the blocking member are attached to the front and rear ends of the evaporation zone.

[0010] Furthermore, the condenser is composed of condensing plates and heat dissipation fins arranged at intervals. The side of the condensing plate is connected to the evaporation zone, and the condensing plate has a laterally extending heat dissipation channel inside. The heat dissipation channel extends laterally to the side of the condensing plate opposite to the evaporation zone, and the end of the heat dissipation channel and the end of the condensing plate are spaced apart, forming a gas-liquid channel extending downward from the end of the condensing plate.

[0011] Furthermore, grooves parallel to the gas-liquid flow channels are formed in the evaporation zone of the evaporator.

[0012] Furthermore, fixing ribs are connected between adjacent condenser plates and at both ends of the heat dissipation fins.

[0013] Furthermore, the central axis of the condenser and the central axis of the heat receiving area are on the same horizontal plane.

[0014] Furthermore, the side of the condenser and the edge of the evaporation zone of the evaporator are welded together as one unit.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects: The heat dissipation method and heat sink provided by this invention adopt a side-mounted installation for lateral heat dissipation, which can absorb heat from the side of the device. By establishing a gas-liquid circulation channel that extends laterally from the top of the evaporator through the top of the condenser to the end of the condenser, and then flows downward through the end of the condenser to the bottom of the evaporator and back to the bottom of the evaporator, the device can be effectively cooled from the side. Furthermore, the installation height of the condenser can be lowered to be close to or at the same level as the device, reducing the overall height space of the heat sink and making the structure of the heat sink more compact. Attached Figure Description

[0016] Figure 1 Schematic diagram of the gas-liquid circulation channel in a radiator; Figure 2 : Schematic diagram of the split structure of the radiator; Figure 3 Schematic diagram of the overall structure of the radiator; Figure 4 Schematic diagram of the condenser plate structure; Figure 5 Schematic diagram of heat dissipation channel structure; Figure 6 : Schematic diagram of evaporator structure. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figure 1 As shown. A lateral heat dissipation method provides a phase change radiator, including an evaporator 1 and a condenser 2, wherein the evaporator 1 and the condenser 2 have a communicating gas-liquid exchange channel 3. After injecting a phase change medium into the evaporator 1, the method specifically includes the following steps: S1, the heat receiving area 11 at the bottom of the evaporator 1 is laterally attached to the heating device, and the condenser 2 is laterally connected to the evaporator 1, so that the gas-liquid exchange channel 3 extends laterally. In this embodiment, after the heat from the heating device is received by the evaporator 1 attached to the side, the phase change medium injected inside it becomes gaseous and extends laterally along the gas-liquid exchange channel 3 to the end of the evaporator 1.

[0019] S2, the gas-liquid exchange forms a cycle as follows: it extends laterally from the top of evaporator 1 through the top of condenser 2 to the end of condenser 2, and then flows downwards through the bottom of condenser 2 back to the bottom of evaporator 1. In this embodiment, when the phase change medium in evaporator 1 is heated, the gaseous medium enters from the upper region of condenser 2 and gradually extends laterally along the gas-liquid exchange channel 3 to the end of condenser 2. After reaching the end of condenser 2, the gaseous medium begins to descend, gradually turning into a liquid during this process. Finally, it flows back to evaporator 1 from the lower region of condenser 2 along the gas-liquid exchange channel 3. By designing the gas-liquid circulation channel as a lateral circulation channel, the heat generated during the gas-liquid circulation of the phase change medium can be carried away, thereby maintaining its constant temperature.

[0020] In a more preferred embodiment, step S2 specifically involves deploying a blocking member 12 between the evaporator 1 and the condenser 2. This blocking member 12 blocks the middle region of the gas-liquid exchange channel 3, but leaves the top and bottom regions of the channel open. In this embodiment, the blocking member 12 plays a crucial role, creating a partitioned channel in the gas-liquid exchange channel 3 that is connected to the evaporator 1 vertically but blocked in the middle. The gaseous phase change medium, blocked by the blocking member 12, can only enter the condenser 2 from above along the gas-liquid exchange channel 3. Similarly, during liquid medium recirculation, the liquid medium can only recirculate into the evaporator 1 from the lower region of the condenser 2 via the gas-liquid exchange channel 3. The blocking member 12 ensures that the gas and liquid media circulate in a partitioned manner, with the gaseous state above and the liquid state below, preventing mixing of the two states in the lateral gas-liquid circulation.

[0021] In a more preferred embodiment, in step S2, a downwardly extending gas-liquid flow channel 21 is formed at the end of the condenser 2. During the gas-liquid exchange cycle, the gas flows downward through the gas-liquid flow channel 21 from the end of the condenser 2, through the bottom of the condenser 2, and extends back to the bottom of the evaporator 1. In this embodiment, the extension direction of the gas-liquid flow channel 21 is perpendicular to the gas-liquid exchange channel 3. It will fully receive the gaseous medium flowing in from the gas-liquid exchange channel 3 and uniformly flow downward through the gas-liquid flow channel 21 to the bottom of the condenser 2. During this process, some gaseous medium may liquefy, but under its own gravity, it can still flow downward to the bottom of the condenser 2, and finally flow back to the evaporator 1 through the gas-liquid exchange channel 3 in the lower region of the condenser 2.

[0022] Another embodiment involves a side-mounted integrated phase change radiator, including an evaporator 1 and a condenser 2. The evaporator 1 is filled with a phase change medium and has a heat receiving area 11 on one side. The opposite side of the heat receiving area 11 is an evaporation area 13. The condenser 2 is laterally connected to the evaporation area 13 of the evaporator 1. There is a laterally extended gas-liquid exchange channel 3 between the evaporation area 13 and the condenser 2. A blocking member 12 is connected to the evaporation area 13. The upper and lower ends of the blocking member 12 are spaced apart from the upper and lower ends of the evaporation area 13, respectively.

[0023] For details, please refer to [link / reference]. Figure 2 , Figure 3 , Figure 6 The entire evaporator 1 is a plate-shaped component with a concave side, and the concave evaporation zone 13 contains the injected phase change medium. The other side of the evaporator 1 is laterally attached to a heating element to receive its heat. Multiple gas-liquid exchange channels 3 are arranged parallel to each other in the condenser 2, with one end connected to the evaporation zone 13, to provide a flow channel for the gas-liquid phase change medium. In this embodiment, the blocking member 12 can be a baffle plate, which covers the evaporation zone 13, but the upper and lower ends of the baffle plate do not completely seal the evaporation zone 13. Therefore, after being heated, the phase change medium becomes gaseous and rises, entering the condenser 2 from the upper part of the baffle plate. After circulating and liquefying through the gas-liquid exchange channel 3, it flows back into the condenser 2 from the lower part of the baffle plate.

[0024] In a more preferred embodiment, the evaporation zone 13 is a concave space on the surface of the evaporator 1, and the blocking member 12 is laid flat within this concave space and extends to both ends of the evaporation zone 13. A gap is left between the bottom of the condenser 2 and the blocking member 12. The blocking member 12 seals the two ends of the evaporation zone 13, which allows the phase change medium in the evaporation zone 13 to be heated and strictly form a zoned circulation of gaseous medium entering from the top and liquid medium returning from the bottom. The gap between the bottom of the condenser 2 and the blocking member 12 allows the gas-liquid exchange channels 3 to form a passage, and the phase change medium injected into the evaporation zone 13 can smoothly pass through all the gas-liquid exchange channels 3 to form the aforementioned circulation.

[0025] In a more preferred embodiment, the condenser 2 is composed of a condensing plate 22 and heat dissipation fins 23 arranged at intervals. The side of the condensing plate 22 is connected to the evaporation zone 13. The condensing plate 22 has a laterally extending heat dissipation channel 23 inside. The heat dissipation channel 23 extends laterally to the side of the condensing plate 22 opposite to the evaporation zone 13, and the end of the heat dissipation channel 23 and the end of the condensing plate 22 are spaced apart, forming a gas-liquid channel 21 extending downward from the end of the condensing plate 22.

[0026] In this embodiment, see Figure 4 and Figure 5The condenser 2 is formed by an array of multiple condensing plates 22 and heat dissipation fins 23 arranged in a grid shape. The condensing plates 22 are used for gas-liquid circulation, and the heat dissipation fins 23 are spaced apart between the condensing plates 22 to dissipate heat from the phase change medium flowing within them, accelerating its liquefaction. One end of each heat dissipation channel 23 within the condensing plate 22 connects to the evaporation zone 13, while the other end does not extend completely to the end of the condensing plate 22, but leaves a distance. When each heat dissipation channel 23 has a distance between it and the end of the condensing plate 22, a gas-liquid flow channel 21 is formed. In this embodiment, the array of heat dissipation fins 23 is not extended to the end of the condensing plate 22 during manufacturing; after all the condensing plates 22 are connected and sealed, a connected gas-liquid flow channel 21 is naturally formed, thus reducing processing difficulty and cost.

[0027] The heat dissipation channels 23 within the condenser plate 22 are composed of an alternating array of S-shaped bent channel plates 221. For example... Figure 5 As shown, after the S-shaped bend of the flow channel plate 221 is closed by the side plate of the condenser plate 22, a laterally extended heat dissipation flow channel 23 can be formed. The flow channel plates 221 arranged in parallel and staggered array can increase the contact area between the entire flow channel plate 221 and the side plate of the condenser plate 22 on the basis of forming the heat dissipation flow channel 23, and can increase the structural strength of the condenser plate 22.

[0028] In a more preferred embodiment, see Figure 6 In the evaporation zone 13 of the evaporator 1, a groove 14 parallel to the gas-liquid flow channel 21 is formed. The groove 14 is designed to be parallel to the gas-liquid flow channel 21, which is beneficial for the phase change medium in the evaporation zone 13. After being heated and vaporized, it can rise along the groove 14 and enter the condenser plate 22 from the upper part of the baffle.

[0029] In a more preferred embodiment, fixing ribs 24 are connected between adjacent condenser plates 22 and at both ends of the heat dissipation fins 23. The fixing ribs 24 can connect the various condenser plates 22 and heat dissipation fins 23 to form a whole, and have a certain structural strength. At the same time, they can protect the heat dissipation fins 23.

[0030] In a more preferred embodiment, the central axis of the condenser 2 and the central axis of the heat receiving area 11 are on the same horizontal plane. Due to the above-mentioned lateral circulation gas-liquid channel design, combined with the baffle to form a gas-liquid partition circulation, the condenser 2 can be installed at the same horizontal height as the heat-generating device, further reducing the height space of the radiator and making its structure more compact.

[0031] In a more preferred embodiment, the side of the condenser 2 and the edge of the evaporation zone 13 of the evaporator 1 are welded together. The condenser 2 is welded onto the evaporation zone 13 to form an effective seal, and the connecting pipes are omitted, making the radiator a compact, integrated structure.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lateral heat dissipation method, providing a phase change radiator, comprising an evaporator (1) and a condenser (2), the evaporator (1) and the condenser (2) having a communicating gas-liquid exchange channel (3), characterized in that, After injecting the phase change medium into the evaporator (1), the specific steps include the following: S1, the heat receiving area (11) at the bottom of the evaporator (1) is laterally attached to the heating device, and the condenser (2) is laterally connected to the evaporator (1), so that the gas-liquid exchange channel (3) extends laterally; S2, the gas-liquid exchange forms the following cycle, that is, from the top of the evaporator (1) through the top of the condenser (2) to the end of the condenser (2), and then downward through the bottom of the condenser (2) to the bottom of the evaporator (1).

2. The lateral heat dissipation method as described in claim 1, characterized in that, In step S2, a blocking element (12) is deployed between the evaporator (1) and the condenser (2) to block the middle region of the gas-liquid exchange channel (3) but open the top and bottom regions of the gas-liquid exchange channel (3).

3. The lateral heat dissipation method as described in claim 2, characterized in that, In step S2, a downward-extending gas-liquid flow channel (21) is opened at the end of the condenser (2). During the gas-liquid exchange cycle, the gas-liquid flow channel (21) flows downward through the end of the condenser (2) and back to the bottom of the evaporator (1).

4. A side-mounted integrated phase change radiator, comprising an evaporator (1) and a condenser (2), wherein the evaporator (1) is filled with a phase change medium and has a heat receiving area (11) on one side, and an evaporation area (13) on the opposite side of the heat receiving area (11), characterized in that, The condenser (2) is laterally connected to the evaporation zone (13) of the evaporator (1), and there is a laterally extended gas-liquid exchange channel (3) between the evaporation zone (13) and the condenser (2); a blocking member (12) is connected to the evaporation zone (13), and the upper and lower ends of the blocking member (12) are spaced apart from the upper and lower ends of the evaporation zone (13), respectively.

5. The side-mounted integrated phase change radiator as described in claim 4, characterized in that, The evaporation zone (13) is a concave space on the surface of the evaporator (1). The blocking member (12) is laid flat in the concave space and extends to the front and rear ends of the evaporation zone (13). There is a gap between the bottom of the condenser (2) and the blocking member (12).

6. The side-mounted integrated phase change radiator as described in claim 5, characterized in that, The condenser (2) is composed of a condensing plate (22) and heat dissipation fins (23) arranged at intervals. The side of the condensing plate (22) is connected to the evaporation zone (13). The condensing plate (22) has a heat dissipation channel (23) extending laterally inside. The heat dissipation channel (23) extends laterally to the side of the condensing plate (22) opposite to the evaporation zone (13), and the end of the heat dissipation channel (23) and the end of the condensing plate (22) are spaced apart, forming a gas-liquid channel (21) extending downward from the end of the condensing plate (22).

7. The side-mounted integrated phase change radiator as described in claim 6, characterized in that, The evaporator (1) has a groove (14) in the evaporation zone (13) that is parallel to the gas-liquid flow channel (21).

8. The side-mounted integrated phase change radiator as described in claim 6, characterized in that, Fixed ribs (24) are connected between adjacent condenser plates (22) and at both ends of heat dissipation fins (23).

9. The side-mounted integrated phase change radiator as described in claim 4, characterized in that, The central axis of the condenser (2) and the central axis of the heat receiving area (11) are on the same horizontal plane.

10. The side-mounted integrated phase change radiator as described in claim 4, characterized in that, The side of the condenser (2) and the edge of the evaporation zone (13) of the evaporator (1) are welded together.

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