Heat pipe heat exchange device and heat management system

Abstract

The utility model relates to a heat pipe heat exchange device and a heat management system, the heat pipe heat exchange device comprises an evaporation section, a condensation section and a transition section which are connected in sequence, and an included angle is formed between the center plate face where the evaporation section is located and the center plate face where the condensation section is located. The transition section is provided with a transition channel, one end of the transition channel is communicated with the communicating port of the evaporation section, the other end of the transition channel is communicated with the communicating port of the condensation section, and the minimum flow area of the transition channel is larger than or equal to the flow area of the communicating port of the evaporation section and larger than or equal to the flow area of the communicating port of the condensation section. According to the heat pipe heat exchange device and the heat management system, the problem that when the evaporation section and the condensation section are not arranged in parallel, the heat transfer efficiency of the heat pipe heat exchanger is remarkably reduced is solved.

Description

Technical Field

[0001] This application relates to the technical field of heat pipe heat exchange, and particularly to a heat pipe heat exchange device and a thermal management system. Background Art

[0002] Heat pipe heat exchangers are usually used in scenarios such as waste heat recovery and fresh air heat exchange in multiple different fields, such as wind power, homes, food chemistry, etc. Moreover, in order to adapt to different installation environments, in some working conditions, the evaporation section and the condensation section of the heat pipe heat exchanger cannot be arranged in parallel in series. For example, when the evaporation section and the condensation section are arranged vertically, the overlapping area between the evaporation section and the condensation section is small. Thus, when the gaseous working medium enters the condensation section from the evaporation section, the flow area of the gaseous working medium will suddenly and sharply decrease, resulting in a significant decrease in the flow rate of the gaseous working medium, and further affecting the heat transfer efficiency of the heat pipe heat exchanger. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a heat pipe heat exchange device and a thermal management system to solve the problem that the heat transfer efficiency of the heat pipe heat exchanger significantly decreases when the evaporation section and the condensation section are not arranged in parallel.

[0004] The heat pipe heat exchange device provided in this application includes an evaporation section, a condensation section, and a transition section connected in sequence. The central plate surface where the evaporation section is located and the central plate surface where the condensation section is located are arranged at an angle. The transition section is provided with a transition channel. One end of the transition channel communicates with the communication port of the evaporation section, and the other end communicates with the communication port of the condensation section. The minimum flow area of the transition channel is greater than or equal to the flow area of the communication port of the evaporation section, and the minimum flow area of the transition channel is greater than or equal to the flow area of the communication port of the condensation section.

[0005] In one embodiment, along the direction from the evaporation section to the condensation section, the flow area of the transition channel remains constant.

[0006] In one embodiment, the flow area of the communication port of the evaporation section is equal to the flow area of the communication port of the condensation section.

[0007] In one embodiment, the central plate surface of the evaporation section and the central plate surface of the condensation section are arranged vertically.

[0008] In one embodiment, along the direction from the evaporation section to the condensation section, the inner diameter of the transition channel gradually decreases along the length direction of the communication port of the evaporation section, and the inner diameter of the transition channel gradually increases along the width direction of the communication port of the evaporation section.

[0009] In one embodiment, the inner wall of the transition channel is provided with micro-channel grooves. The micro-channel grooves extend from the end of the transition channel communicating with the evaporation section to the end of the transition channel communicating with the condensation section, and a plurality of micro-channel grooves are distributed circumferentially along the transition channel.

[0010] In one embodiment, a plurality of microchannel grooves are uniformly distributed along the circumferential direction of the transition channel on the entire inner wall surface of the transition channel.

[0011] In one embodiment, the transition section is an integrally formed structure.

[0012] In one embodiment, the evaporation section, the transition section, and the condensation section are sequentially welded to form a heat pipe heat exchange device.

[0013] The present application also provides a thermal management system, which includes the heat pipe heat exchange device described in any one of the above embodiments.

[0014] Compared with the prior art, in the heat pipe heat exchange device and the thermal management system provided by the present application, since the two ends of the transition channel are respectively connected to the communication port of the evaporation section and the communication port of the condensation section, and, the minimum flow area of the transition channel is not less than (greater than or equal to) the flow area of the communication port of the evaporation section, and, the minimum flow area of the transition channel is not less than (greater than or equal to) the flow area of the communication port of the condensation section. Thus, when the gaseous working medium passes through the transition section, its flow area will not decrease, so the flow rate of the gaseous working medium will not be reduced, and thus the heat transfer efficiency of the heat pipe heat exchange device is effectively ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 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, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of a heat pipe heat exchange device according to an embodiment provided by the present application;

[0017] Figure 2 It is a schematic structural diagram of a transition section according to an embodiment provided by the present application;

[0018] Figure 3 It is a vertical sectional view of a transition section according to an embodiment provided by the present application;

[0019] Figure 4 It is a horizontal sectional view of a transition section according to an embodiment provided by the present application;

[0020] Figure 5 It is a schematic structural diagram of a transition section according to another embodiment provided by the present application;

[0021] Figure 6 It is a schematic structural diagram of a transition section according to still another embodiment provided by the present application.

[0022] Reference numerals: 100, evaporation section; 200, condensation section; 300, transition section; 310, transition channel; 320, microchannel groove. Detailed implementation manners

[0023] Heat pipe heat exchangers are usually used in waste heat recovery, fresh air heat exchange and other scenarios in multiple different fields such as wind power, home use, food and chemical industries. Moreover, in order to adapt to different installation environments, in some working conditions, the evaporation section and the condensation section of the heat pipe heat exchanger cannot be arranged in parallel in series. For example, when the evaporation section and the condensation section are arranged vertically, the overlapping area between the evaporation section and the condensation section is small. Thus, when the gaseous working medium enters the condensation section from the evaporation section, the flow area of the gaseous working medium will suddenly and sharply decrease, resulting in a significant decrease in the flow rate of the gaseous working medium, and further affecting the heat transfer efficiency of the heat pipe heat exchanger.

[0024] In order to solve the problem that the heat transfer efficiency of the heat pipe heat exchanger decreases significantly when the evaporation section and the condensation section are not arranged in parallel, the present application provides a heat pipe heat exchange device and a thermal management system.

[0025] Please refer to Figures 1 - 6 , the heat pipe heat exchange device includes an evaporation section 100, a condensation section 200 and a transition section 300 connected in sequence, and the central plate surface where the evaporation section 100 is located and the central plate surface where the condensation section 200 is located are arranged at an angle.

[0026] It should be noted that both the evaporation section 100 and the condensation section 200 are flat structures. Therefore, the central plate surface of the evaporation section 100 refers to the central plane between the two largest side surfaces of the evaporation section 100, and the central plate surface of the evaporation section 100 is perpendicular to the communication port of the evaporation section 100. Similarly, the central plate surface of the condensation section 200 refers to the central plane between the two largest side surfaces of the condensation section 200, and the central plate surface of the condensation section 200 is perpendicular to the communication port of the condensation section 200.

[0027] The transition section 300 is provided with a transition channel 310. One end of the transition channel 310 communicates with the communication port of the evaporation section 100 facing the condensation section 200, and the other end communicates with the communication port of the condensation section 200 facing the evaporation section 100. Moreover, the minimum flow area of the transition channel 310 is greater than or equal to the flow area of the communication port of the evaporation section 100, and the minimum flow area of the transition channel 310 is greater than or equal to the flow area of the communication port of the condensation section 200.

[0028] It should be noted that defining the direction from the evaporation section 100 to the condensation section 200 as the preset direction, the flow area of the transition channel 310 refers to the cross-sectional area of the transition channel 310 perpendicular to the preset direction.

[0029] Since both ends of the transition channel 310 are respectively connected to the connection ports of the evaporation section 100 and the connection ports of the condensation section 200, and the minimum flow area of the transition channel 310 is not less than (greater than or equal to) the flow area of the connection port of the evaporation section 100, and the minimum flow area of the transition channel 310 is not less than (greater than or equal to) the flow area of the connection port of the condensation section 200. Thus, when the gaseous working medium passes through the transition section 300, its flow area will not decrease, so it will not cause a decrease in the flow rate of the gaseous working medium, and thus effectively ensures the heat transfer efficiency of the heat pipe heat exchange device.

[0030] It should be noted that the contact method between the power module and the evaporation section 100 in the evaporation section 100 can be a fitting contact, or it can be partially, mainly or completely immersed in the liquid working medium of the evaporation section 100.

[0031] Moreover, the cooling method of the condensation section 200 can be air cooling or liquid cooling.

[0032] In one embodiment, the transition section 300 is an integrally formed structure.

[0033] In this way, the structural strength of the transition section 300 can be improved.

[0034] Specifically, the transition section 300 is a 3D printed formed part or an integrally cast formed part.

[0035] However, it is not limited thereto. In another embodiment, the transition section 300 can also be formed by splicing multiple modules, and in this way, the processing difficulty of the transition section 300 can be reduced.

[0036] In one embodiment, the evaporation section 100, the transition section 300 and the condensation section 200 are sequentially welded to form a heat pipe heat exchange device.

[0037] In this way, the sealing performance of the heat pipe heat exchange device can be improved.

[0038] However, it is not limited thereto. In another embodiment, the evaporation section 100, the transition section 300 and the condensation section 200 can also be bonded or clamped to form a heat pipe heat exchange device.

[0039] In one embodiment, as Figure 1 shown, the central plate surface of the evaporation section 100 and the central plate surface of the condensation section 200 are vertically arranged.

[0040] With such a setting, under specific working conditions, the central plate surface of the condensation section 200 can be facing the air flow direction, which is beneficial to the rapid heat dissipation of the condensation section 200 of the heat pipe heat exchange device.

[0041] However, it is not limited thereto. In other embodiments, the central plate surface of the evaporation section 100 and the central plate surface of the condensation section 200 can also be arranged at an acute angle.

[0042] Further, in one embodiment, as Figures 1 - 3 and Figures 5 - 6 shown, along the preset direction, the inner diameter of the transition channel 310 gradually decreases along the length direction of the connection port of the evaporation section 100 (which is also the width direction of the connection port of the condensation section 200), and the inner diameter of the transition channel 310 gradually increases along the width direction of the connection port of the evaporation section 100 (which is also the length direction of the connection port of the condensation section 200).

[0043] Such a setting makes the flow change of the gaseous working medium in the transition channel 310 smoother and prevents the generation of turbulent flow.

[0044] Furthermore, in one embodiment, as Figure 6 shown, arctan(h / a) is less than or equal to 30°.

[0045] In one embodiment, as Figures 1 - 6 shown, the orthographic projection of the central plate surface of the evaporation section 100 perpendicular to the preset direction and the orthographic projection of the central plate surface of the condensation section 200 perpendicular to the preset direction are arranged in a cross manner.

[0046] Specifically, in one embodiment, as Figures 1 - 5 shown, the center of the orthographic projection of the central plate surface of the evaporation section 100 perpendicular to the preset direction intersects with the center of the orthographic projection of the central plate surface of the condensation section 200 perpendicular to the preset direction. At this time, the orthographic projection of the entire transition section 300 on the plane perpendicular to the preset direction is approximately in the shape of a cross.

[0047] In another embodiment, the center of the orthographic projection of the central plate surface of the evaporation section 100 perpendicular to the preset direction intersects with the end of the orthographic projection of the central plate surface of the condensation section 200 perpendicular to the preset direction. At this time, the orthographic projection of the entire transition section 300 on the plane perpendicular to the preset direction is approximately in the shape of a T.

[0048] Or, the end of the orthographic projection of the central plate surface of the evaporation section 100 perpendicular to the preset direction intersects with the center of the orthographic projection of the central plate surface of the condensation section 200 perpendicular to the preset direction. At this time, the orthographic projection of the entire transition section 300 on the plane perpendicular to the preset direction is approximately in the shape of a T.

[0049] In yet another embodiment, as Figure 6 shown, the end of the orthographic projection of the central plate surface of the evaporation section 100 perpendicular to the preset direction intersects with the end of the orthographic projection of the central plate surface of the condensation section 200 perpendicular to the preset direction. At this time, the orthographic projection of the entire transition section 300 on the plane perpendicular to the preset direction is approximately in the shape of an L.

[0050] It should be noted that the inner wall of the transition channel 310 extends smoothly, that is, the inner wall surface of the transition channel 310 is a continuously smooth transition surface.

[0051] In this way, the smoothness of the transition channel 310 for the gaseous working medium can be greatly improved, and the smoothness of the transition channel 310 for the liquid working medium can also be improved.

[0052] In one embodiment, along the direction from the evaporation section 100 to the condensation section 200, the flow area of the transition channel 310 remains constant. That is, along the direction from the evaporation section 100 to the condensation section 200, the cross-sectional areas of all parts of the transition channel 310 perpendicular to the preset direction are equal.

[0053] In this way, the flow velocity of the gaseous working medium passing through the transition section 300 can be kept constant, which is beneficial to maintaining the stability of the heat exchange efficiency of the heat pipe heat exchange device.

[0054] However, it is not limited to this. In other embodiments, along the direction from the evaporation section 100 to the condensation section 200, the flow area of the transition channel 310 can also first increase and then decrease, or the flow area of the transition channel 310 can also first remain unchanged, then increase, then decrease, and then remain unchanged, or the flow area of the transition channel 310 can also continuously increase and decrease in a cyclic manner, which will not be listed one by one here.

[0055] Furthermore, in one embodiment, the flow area of the connection port of the evaporation section 100 is equal to the flow area of the connection port of the condensation section 200.

[0056] With such a setting, the flow velocity of the gaseous working medium in the channels of the entire heat pipe heat exchange device can be kept stable.

[0057] However, it is not limited to this. In other embodiments, the flow area of the connection port of the evaporation section 100 can also be larger or smaller than the flow area of the connection port of the condensation section 200.

[0058] In one embodiment, as Figures 2 - 4 shown, the inner wall of the transition channel 310 is provided with micro-channel grooves 320. The micro-channel grooves 320 extend from one end of the transition channel 310 connected to the evaporation section 100 to the other end of the transition channel 310 connected to the condensation section 200, and a plurality of micro-channel grooves 320 are distributed along the circumferential direction of the transition channel 310.

[0059] With such a setting, on the one hand, it can play a role in guiding the liquid working medium flowing through the inner wall of the transition channel 310, and on the other hand, it can also increase the structural strength of the transition section 300.

[0060] Furthermore, in one embodiment, a plurality of micro-channel grooves 320 are evenly distributed along the circumferential direction of the transition channel 310 on the entire inner wall surface of the transition channel 310.

[0061] With such a setting, the liquid return uniformity at all parts of the transition channel 310 is improved.

[0062] However, without limitation, in other embodiments, the plurality of microchannel grooves 320 may also be unevenly distributed along the circumferential direction of the transition channel 310. For example, the distribution density of the microchannel grooves 320 on the inner wall surface of the local transition channel 310 is high, and the distribution density of the microchannel grooves 320 on the inner wall surface of the local transition channel 310 is low.

[0063] The present application also provides a thermal management system, which includes the heat pipe heat exchange device described in any one of the above embodiments.

[0064] It should be noted that the thermal management system includes, but is not limited to, wind power generation heat dissipation systems, photovoltaic heat dissipation systems, motor heat dissipation systems, etc., and will not be enumerated one by one here.

[0065] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0066] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

[0067] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0068] In addition, 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 at least one of such features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0069] In this application, unless otherwise clearly stipulated or defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0070] In this application, unless otherwise clearly stipulated or defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0071] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0072] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

Claims

1. A heat pipe heat exchange device, characterized in that: It comprises an evaporation section (100), a condensation section (200) and a transition section (300) which are connected in sequence, wherein a central plate surface where the evaporation section (100) is located and a central plate surface where the condensation section (200) is located are arranged at an angle; The transition section (300) is provided with a transition channel (310), one end of the transition channel (310) is connected to the connecting port of the evaporation section (100), and the other end is connected to the connecting port of the condensation section (200), the minimum flow area of ​​the transition channel (310) is greater than or equal to the flow area of ​​the connecting port of the evaporation section (100), and the minimum flow area of ​​the transition channel (310) is greater than or equal to the flow area of ​​the connecting port of the condensation section (200).

2. The heat pipe heat exchange device according to claim 1, characterized in that: Along the direction from the evaporation section (100) to the condensation section (200), the flow area of ​​the transition channel (310) remains constant.

3. The heat pipe heat exchange device according to claim 2, characterized in that: The flow area of ​​the connecting port of the evaporation section (100) is equal to the flow area of ​​the connecting port of the condensation section (200).

4. The heat pipe heat exchange device according to claim 1, characterized in that: The central plate surface of the evaporation section (100) and the central plate surface of the condensation section (200) are arranged vertically.

5. The heat pipe heat exchange device according to claim 4, characterized in that: Along the direction from the evaporation section (100) to the condensation section (200), the inner diameter of the transition channel (310) along the length direction of the connecting port of the evaporation section (100) gradually decreases, and the inner diameter of the transition channel (310) along the width direction of the connecting port of the evaporation section (100) gradually increases.

6. The heat pipe heat exchange device according to claim 1, characterized in that: The inner wall of the transition channel (310) is provided with a microchannel groove (320), and the microchannel groove (320) extends from one end of the transition channel (310) connected to the evaporation section (100) to one end of the transition channel (310) connected to the condensation section (200), and a plurality of the microchannel grooves (320) are distributed along the circumference of the transition channel (310).

7. The heat pipe heat exchange device according to claim 6, characterized in that: The plurality of microchannel grooves (320) are evenly distributed on the entire inner wall surface of the transition channel (310) along the circumference of the transition channel (310).

8. The heat pipe heat exchange device according to claim 1, characterized in that: The transition section (300) is an integrally formed structure.

9. The heat pipe heat exchange device according to claim 1, characterized in that: The evaporation section (100), the transition section (300) and the condensation section (200) are welded in sequence to form the heat pipe heat exchange device.

10. A thermal management system, characterized in that: It comprises a heat pipe heat exchange device as described in any one of claims 1 to 9.

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