Heat dissipation device and power conversion equipment

Abstract

The utility model discloses a heat dissipation device and power conversion equipment, and belongs to the technical field of electrical equipment heat dissipation, and the heat dissipation device comprises an evaporation assembly which is provided with a containing cavity; the condensation assembly comprises a first condensation part, the first condensation part is provided with a first condensation channel extending in the first direction, the first condensation channel is provided with a first opening, the first opening communicates with the containing cavity, the first condensation part is provided with a plurality of turbulent flow parts, and the multiple turbulent flow parts are located in the first condensation channel and distributed in the first direction; every two adjacent turbulent flow parts are arranged at intervals, and the turbulent flow parts are connected with the first condensation part; in the flowing process of the gaseous working medium, the liquid working medium flows in the direction different from that of the gaseous working medium through the gaps between the turbulent flow parts, so that the liquid working medium rapidly flows back to the containing cavity, separation of the liquid working medium and the gaseous working medium is achieved, mutual interference between the gaseous working medium and the liquid working medium is reduced, and therefore the flowing resistance is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heat dissipation of electrical equipment, and particularly relates to a heat dissipation device and a power conversion device. BACKGROUND

[0002] The phase change heat dissipation device has been applied to power products as a high-efficiency heat dissipation structure. The phase change heat dissipation device comprises an evaporator and a condenser. The evaporator contains a cooling medium, and the condenser is used to cool the gaseous working medium introduced by the evaporator into liquid working medium.

[0003] In the working process of the existing phase change heat dissipator, both gaseous working medium and liquid working medium exist in the condensing channel. The flow direction of the liquid working medium is usually not unique, while the gaseous working medium generally flows in one direction. This easily leads to mutual influence between the gaseous working medium and the liquid working medium, and increases the flow resistance. CONTENT OF THE UTILITY MODEL

[0004] The application provides a heat dissipation device, aiming to solve the technical problem that the gaseous working medium and the liquid working medium in the condensing channel of the existing phase change heat dissipator will mutually influence each other, and increase the flow resistance. Another object of the application is to provide a power conversion device.

[0005] TECHNICAL SCHEME: The heat dissipation device provided by the application comprises:

[0006] An evaporating assembly having a containing cavity;

[0007] A condensing assembly comprising a first condensing part provided with a first condensing channel extending in a first direction, the first condensing channel having a first opening, and the first opening being in communication with the containing cavity. The first condensing part is provided with a plurality of turbulence parts. The plurality of turbulence parts are arranged in the first condensing channel and arranged in the first direction. Adjacent two turbulence parts are arranged at intervals. The turbulence part is connected with the first condensing part.

[0008] In some embodiments, the plurality of turbulence parts are arranged in a row in the first direction. The condensing assembly comprises a plurality of rows of turbulence parts. The plurality of rows of turbulence parts are arranged in a second direction. The second direction intersects with the first direction. Each turbulence part has a gap with its adjacent turbulence part.

[0009] In some embodiments, the adjacent two rows of turbulence parts are partially overlapped in the orthographic projection on the same projection plane in the first direction.

[0010] In some embodiments, the adjacent two rows of turbulence parts are spaced apart from each other in the orthographic projection on the same projection plane in the first direction.

[0011] In some embodiments, two adjacent disturbance portions are spaced apart in a second direction in the first direction.

[0012] The condensing assembly further comprises a plurality of heat-conducting portions, two adjacent disturbance portions are connected by the heat-conducting portions in the second direction.

[0013] In some embodiments, the heat-conducting portions are arranged on one side of the disturbance portions in a third direction, the third direction intersects the first direction and the second direction.

[0014] Alternatively, the heat-conducting portions are arranged on both sides of the disturbance portions in the third direction, and the heat-conducting portions on the same side of the disturbance portions are spaced apart in the second direction.

[0015] In some embodiments, the first condensing channel comprises two first faces and two second faces, the two first faces are arranged opposite in the third direction, and the two second faces are arranged opposite in the second direction.

[0016] The heat-conducting portions are connected to the first faces, and the second faces are connected to the disturbance portions closest thereto.

[0017] In some embodiments, the condensing assembly comprises a plurality of the first condensing portions arranged in the second direction, and two adjacent first condensing portions are connected to each other.

[0018] Alternatively, at least one first condensing portion is spaced apart from the adjacent first condensing portion.

[0019] The first opening of each first condensing portion is in communication with the accommodation cavity and is sealingly connected to the evaporating assembly.

[0020] In some embodiments, the condensing assembly further comprises one or more second condensing portions, the second condensing portion is provided with a second condensing channel extending in the first direction, and the second condensing portion is arranged below the first condensing portion in the second direction and is connected to the first condensing portion.

[0021] In some embodiments, the first condensing portion and the second condensing portion are in communication with each other at the end away from the first opening.

[0022] In some embodiments, the first condensing portion is provided with a second opening in communication with the first condensing channel at the end away from the first opening.

[0023] The heat-dissipating device further comprises a cover plate, the cover plate covers the second opening and is connected to the first condensing portion, and the cover plate is provided with a converging cavity in communication with the second opening on the side facing the first condensing portion.

[0024] In some embodiments, the spoiler extends along the first direction.

[0025] Alternatively, the cross section of the spoiler is circular or polygonal.

[0026] Correspondingly, the power conversion device provided by the embodiments of the present application comprises the heat dissipation device described above.

[0027] Beneficial effects: The heat dissipation device provided by the embodiments of the present application converts the single-direction flow of the gaseous working medium into multi-direction flow by arranging multiple spoilers arranged at intervals, and the flow channels in multiple directions are interconnected. During the flow process of the gaseous working medium, the liquid working medium flows along a direction different from that of the gaseous working medium through the gaps between the spoilers, so that the liquid working medium quickly returns to the containing cavity, realizes separation from the gaseous working medium, reduces the mutual interference between the gaseous working medium and the liquid working medium, thereby facilitating the reduction of flow resistance, and improving the heat dissipation performance of the device.

[0028] The power conversion device provided by the embodiments of the present application comprises the heat dissipation device described above, and therefore can have all the technical features and beneficial effects of the heat dissipation device described above. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 The structural schematic diagram of the heat dissipation device provided by the embodiments of the present application is shown in the figure;

[0031] Figure 2 The structural schematic diagram of the evaporation assembly provided by the embodiments of the present application is shown in the figure;

[0032] Figure 3 The structural schematic diagram of the spoiler provided by the embodiments of the present application is shown in the figure;

[0033] Figure 4 The structural schematic diagram of another structure of the spoiler provided by the embodiments of the present application is shown in the figure;

[0034] Figure 5 The structural schematic diagram of another structure of the spoiler provided by the embodiments of the present application is shown in the figure;

[0035] Figure 6 The structural schematic diagram of the heat conduction part provided by the embodiments of the present application is shown in the figure;

[0036] Figure 7 The schematic diagram of the relative position of the heat conduction part and the spoiler provided by the embodiments of the present application is shown in the figure;

[0037] Figure 8 Another schematic view of relative positions of the heat conduction part and the spoiler part provided for the embodiment of the present application;

[0038] Figure 9 A side view of the first condensing part provided for the embodiment of the present application;

[0039] Figure 10 A structural schematic view of the first condensing part and the second condensing part provided for the embodiment of the present application;

[0040] Figure 11 A schematic view of another structure of the spoiler part provided for the embodiment of the present application;

[0041] Figure 12 A three-dimensional schematic view of the heat dissipation device provided for the embodiment of the present application;

[0042] The reference signs: 1, evaporation assembly; 11, base plate; 111, containing cavity; 12, side plate; 121, through hole; 2, condensing assembly; 21, first condensing part; 211, first condensing channel; 2111, first surface; 2112, second surface; 212, first opening; 213, second opening; 22, spoiler part; 23, heat conduction part; 24, bending part; 25, second condensing part; 251, second condensing channel; 3, cover plate; 31, converging cavity. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be understood that the terms "height", "thickness", "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, at least one of which can be one, two or more, unless otherwise specifically limited.

[0045] It should be noted that in the drawings of the embodiments of the present application, the arrow marked X represents the first direction X, the arrow marked Y represents the second direction Y, and the arrow marked Z represents the third direction Z. The first direction X, the second direction Y and the third direction Z are introduced for more clearly describing the structure and relative position relationship of the components in the heat dissipation device. In actual application, the first direction X, the second direction Y and the third direction Z can be changed according to the different placement modes of the heat dissipation device.

[0046] As a prologue of the embodiments of the present application, the phase change radiator comprises a condenser, an evaporator and an internal phase change working medium. The evaporator absorbs heat of a heat source, and the internal liquid phase change working medium vaporizes. Under the action of gravity and pressure difference, the vaporized working medium rises into the condenser. The gaseous phase change working medium in the condenser dissipates heat under the action of an external fan, and the condensed liquid phase change working medium returns to the evaporator under the action of gravity, and the above cycle is repeated.

[0047] The working medium in the condenser flows and condenses in the condensing channel. The commonly used condensing channel is a porous flat tube structure. The plurality of channels inside the porous flat tube structure are arranged in parallel. Considering the arrangement and use of the integrated phase change radiator, the evaporator is installed along the direction of gravity, and the condenser of the phase change radiator is horizontally placed, so that the channels in the condenser are also horizontally arranged. When the gaseous working medium enters the condensing channel, the gaseous working medium gradually condenses into liquid along with the cooling of the external air. At this time, there are both gaseous working medium and liquid working medium in a condensing channel, the liquid working medium flows in both directions along the flow channel, and the gaseous working medium only flows in a single direction. The gaseous working medium and the liquid working medium will affect each other, resulting in increased flow resistance and reduced flow speed of the working medium, thereby affecting the heat transfer efficiency. At the same time, the liquid working medium stays in the condenser for too long, affecting the circulation efficiency, and ultimately reducing the performance of the phase change radiator.

[0048] Please refer to Figure 1 , Figure 2 and Figure 12 The heat dissipation device of the embodiments of the present application comprises an evaporating assembly 1 and a condensing assembly 2. The evaporating assembly 1 has a containing cavity 111, and the containing cavity 111 is provided with a phase change working medium such as water, ethanol, freon, etc. The evaporating assembly 1 is in thermal contact with a heat source, and the liquid phase change working medium in the evaporating assembly 1 vaporizes by absorbing heat of the heat source.

[0049] The condensing assembly 2 comprises a first condensing part 21, and a first condensing channel 211 is arranged in the first condensing part 21 and extends along a first direction X. The first condensing channel 211 has a first opening 212, and the first opening 212 is in communication with the containing cavity 111, so that the gaseous working medium enters the first condensing channel 211 through the first opening 212, or the liquid working medium in the first condensing channel 211 flows back to the containing cavity 111 of the evaporating assembly 1 through the first opening 212. The first condensing part 21 is provided with a plurality of turbulence parts 22, and the plurality of turbulence parts 22 are arranged in the first condensing channel 211. The plurality of turbulence parts 22 are arranged along the first direction X, and two adjacent turbulence parts 22 are arranged at intervals. The turbulence part 22 is connected with the first condensing part 21, and the first direction X intersects with the direction of gravity. The plurality of turbulence parts 22 arranged along the first direction X can be that the plurality of turbulence parts 22 are arranged in a straight line, or the overall trend or average direction of the arrangement of the plurality of turbulence parts 22 conforms to the first direction X, that is, the consistency of the directionality in the first direction X is maintained. The two adjacent turbulence parts 22 arranged at intervals can be that the two adjacent turbulence parts 22 are spaced apart from each other along the first direction X, or spaced apart from each other along a second direction Y, and the second direction Y intersects with the first direction X and is the direction of gravity.

[0050] Specifically, the evaporating assembly 1 comprises a base plate 11 and a side plate 12. One side of the base plate 11 is provided with a containing cavity 111, and the side plate 12 is connected with the base plate 11 and covers the containing cavity 111. The side plate 12 is provided with a through hole 121 penetrating through the thickness direction of the side plate 12, and the through hole 121 is in communication with the containing cavity 111. The number of the first condensing part 21 is multiple, and the first condensing part 21 is arranged at intervals along the length direction of the side plate 12. Each first condensing part 21 corresponds to one through hole 121, and one end of the first condensing part 21 corresponding to the first opening 212 is inserted into the through hole 121 and connected with the side plate 12.

[0051] Please refer to Figure 1 and Figure 3 The first condensing part 21 comprises a cavity formed by a plurality of plate surfaces. The cavity has the first condensing channel 211 inside, and the first condensing channel 211 is in communication with the containing cavity 111 through the first opening 212. Alternatively, a plurality of partition plates are arranged inside the first condensing part 21 to form the cavity, or the partition plates inside the cavity and the plate surfaces outside the first condensing part 21 form the cavity. As long as an independent cavity space can be formed, it is the first condensing part 21. The turbulence part 22 and the plate surface can be connected by brazing or by blow molding process.

[0052] The plurality of turbulence portions 22 allows the formation of a multi-channel structure inside the first condensation channel 211. During operation, the phase-change working medium in the containing cavity 111 is heated to evaporate into gaseous working medium, which then enters the first condensation channel 211. The gaseous working medium moves in the first direction X through the gaps around the periphery of each turbulence portion 22 and, in the process, is cooled to condense into liquid working medium. The liquid working medium moves downward through the gaps between the turbulence portions 22 under the action of gravity or other driving force, allowing the liquid working medium to quickly fall and separate from the gaseous working medium, and then return to the containing cavity 111, thereby reducing the mutual interference between the gaseous working medium and the liquid working medium, and facilitating the reduction of flow resistance of the liquid. In addition, the liquid working medium can quickly return to the containing cavity 111, allowing a certain amount of liquid working medium to be maintained in the containing cavity 111 to absorb heat, which helps to improve the heat dissipation efficiency and reduce the possibility of dry burning of the evaporation assembly 1.

[0053] For reference Figure 1 In some embodiments, the plurality of turbulence portions 22 are arranged in a row along the first direction X, and the condensation assembly 2 includes a plurality of rows of turbulence portions 22 arranged along a second direction Y intersecting the first direction X, i.e., the second direction Y is the direction of gravity. Each turbulence portion 22 has a gap with its adjacent turbulence portion 22.

[0054] The plurality of turbulence portions 22 arranged in a row along the first direction X can be understood as being arranged in a straight line, or in a wavy, curved or square wave shape along the first direction X.

[0055] The plurality of rows of turbulence portions 22 can also be divided into a plurality of columns arranged along the first direction X, and the turbulence portions 22 in each column are arranged along the second direction Y. The number of turbulence portions 22 in each column can be the same or different. The difference in the number of turbulence portions 22 in each column can be due to the arrangement of the turbulence portions 22 in each row, or due to the difference in the number of turbulence portions 22 in each row.

[0056] The increase in the number of turbulence portions 22 increases the gaps between them and the path from the first opening 212 to each gap, which increases the contact area between the gaseous medium and the first condensation portion 21, allowing sufficient heat dissipation to accelerate the condensation speed, while allowing the liquid working medium to separate from the gaseous working medium in a timely manner. In addition, the plurality of rows of turbulence portions 22 are arranged along the second direction Y, which increases the size of the first condensation portion 21 in the second direction Y, so that the distance between the liquid working medium and the gaseous working medium above increases after the liquid working medium falls and converges, reducing the disturbance to the surrounding airflow when the liquid working medium flows.

[0057] For reference Figure 10In some embodiments, the condensing assembly 2 comprises a plurality of first condensing portions 21 arranged along the second direction Y, and two adjacent first condensing portions 21 are connected to each other. Specifically, the first condensing portion 21 comprises a first plate surface and a second plate surface arranged oppositely along the second direction Y, and the second plate surface is below the first plate surface. In two adjacent first condensing portions 21, the second plate surface of the upper first condensing portion 21 is connected to the first plate surface of the lower first condensing portion 21, and the two are combined into a partition. In this way, a plurality of first condensing portions 21 are connected into a whole, and the mutual interference between the first condensing channels 211 can be reduced in the case that the gaseous working medium is separated from the liquid working medium by the turbulence portion 22. At this time, the cavity in the first condensing portion 21 can be regarded as being separated by the partition and enclosed by the plate surfaces.

[0058] Alternatively, the condensing assembly 2 comprises a plurality of first condensing portions 21 arranged along the second direction Y, and at least one first condensing portion 21 is arranged spaced apart from an adjacent first condensing portion 21. The first opening 212 of each first condensing portion 21 is in communication with the accommodating cavity 111 and is sealingly connected to the evaporating assembly 1. Specifically, each first condensing portion 21 is a separate individual, and each first condensing portion 21 corresponds to a through hole 121 and the two are inserted into each other. The first condensing portion 21 realizes the sealing of the first opening 212 and the accommodating cavity 111 by being connected to the side plate 12. The spaced-apart first condensing portions 21 enable the external air to pass through the gaps between them, thereby strengthening the heat exchange with the external environment.

[0059] Please refer to Figure 1 In some embodiments, two adjacent rows of turbulence portions 22 overlap in the orthographic projection part of the same projection plane along the first direction X, and the projection plane is perpendicular to the first direction X. In this case, in the two adjacent rows of turbulence portions 22, the center distance in the second direction Y between at least one turbulence portion 22 of one row and at least one turbulence portion 22 of the other row is less than the width of the turbulence portion 22 in the second direction Y. The center distance can be understood as the distance between the geometric centers of the two turbulence portions 22, or the distance between the centers of gravity of the two turbulence portions 22. When the turbulence portion 22 is a regular geometric figure, the geometric center is the center of gravity.

[0060] In the present embodiment, each row of turbulence portions 22 can be regarded as being arranged along a straight line at intervals, and two adjacent rows of turbulence portions 22 are arranged staggered along the first direction X. Alternatively, in some of the turbulence portions 22, each row of turbulence portions 22 can be regarded as being arranged in a wave shape along the first direction X. This arrangement increases the diversification of the path of the gaseous working medium when flowing, and enables the gaseous working medium to be fully heat-exchanged with the external environment through the turbulence portion 22, thereby improving the heat exchange efficiency.

[0061] Please refer to Figure 1The turbulence portion 22 is in a multi-faceted prism shape, which increases the contact area with the gas, and is conducive to increasing the condensation effect. In addition, the multi-faceted prism has a certain volume and strength, which increases the strength of the first condensation portion 21. Meanwhile, the staggered arrangement of the multi-faceted prism in the effective space increases the number of prisms, which can further improve the condensation effect. In addition, the inclined surface of the multi-faceted prism is arranged opposite to the first opening 212, which can reduce the flow resistance of the gaseous working medium.

[0062] Please refer to Figure 3 and Figure 4 In some embodiments, the orthographic projection of two adjacent rows of turbulence portions 22 on the same projection plane perpendicular to the first direction X is spaced from each other.

[0063] Please refer to Figure 3 In the embodiment, the turbulence portions 22 in each row are arranged in a straight line, and the distance between the two adjacent rows of turbulence portions 22 in the second direction Y is greater than the width of the turbulence portion 22. The length of the turbulence portions 22 in each column in the first direction X is the same.

[0064] Specifically, the turbulence portion 22 can be a plurality of planar fins. The plurality of planar fins are arranged along the first direction X, and the plate surface of the fin extends along the first direction. The plurality of planar fins form a plurality of channels, and the vaporized cooling medium flows into the plurality of channels and exchanges heat with the plurality of planar fins to liquefy. Part of the liquefied liquid working medium flows along the gravity direction through the gap between the planar fins arranged at intervals, so as to realize gas-liquid separation.

[0065] Please refer to Figure 4 Alternatively, the length of the turbulence portion 22 in at least part of the column in the first direction X is different, which can form an increasing or decreasing form from top to bottom, or an increasing or decreasing form from the middle to both sides.

[0066] In this arrangement, the turbulence portions 22 form relatively regular flow paths, and the gaseous working medium can flow uniformly between the turbulence portions 22, which is conducive to realizing a stable heat exchange process. Meanwhile, the flow path of the fluid is relatively simple, which is convenient for simulation, analysis and design of the device in the early stage.

[0067] Please refer to Figure 4 The turbulence portion 22 adopts a planar fin structure, and a plurality of planar fins in each row are arranged at intervals along the first direction X. Each planar fin extends along the first direction X. The length of the planar fin in the middle column decreases from top to bottom. This arrangement is conducive to the gaseous medium fully contacting the planar fin in the upper part for heat exchange. The number of planar fin gaps in the lower region of the first condensation channel 211 is increased, which is conducive to the downward flow of the liquid medium, and further realizes gas-liquid separation.

[0068] In other embodiments, the baffles 22 in each row can also be arranged in other forms, as long as sufficient spacing is ensured between them. Please refer to... Figure 6 For example, each row of spoilers 22 is arranged along a square wave pattern, and the whole is arranged in an interlaced layout. Adjacent rows of spoilers 22 are spaced apart from each other, and the minimum distance between the two rows of spoilers 22 is greater than the width of the spoilers 22 along the second direction Y.

[0069] Please combine them together Figure 5 , Figure 6 and Figure 9 In some embodiments, in the first direction X, two adjacent turbulence-disrupting portions 22 are spaced apart along the second direction Y, and the condensation assembly 2 also includes multiple heat-conducting portions 23; in the second direction Y, two adjacent turbulence-disrupting portions 22 are connected by heat-conducting portions 23. In this embodiment, the turbulence-disrupting portions 22 extend along the first direction X and are generally plate-shaped or sheet-shaped. Two adjacent rows of turbulence-disrupting portions 22 are spaced apart along the second direction Y, and the distance between them is greater than the width of the turbulence-disrupting portions 22. Multiple turbulence-disrupting portions 22 in the same second direction Y are connected by heat-conducting portions 23, so that heat can be transferred between the turbulence-disrupting portions 22, and the turbulence-disrupting portions 22 are connected as a whole, which is convenient for assembly.

[0070] Because the turbulence sections 22 are staggered in the second direction Y, the flow path of the gaseous working medium changes continuously, which increases the disturbance to the gaseous working medium and accelerates the fall of the liquid working medium. When passing through the turbulence sections 22 at different heights, the gaseous and liquid working medium will naturally separate, with the gaseous working medium tending to rise and the liquid working medium falling along the turbulence sections 22, thus achieving gas-liquid separation.

[0071] Please refer to Figure 7 In some embodiments, a plurality of heat-conducting parts 23 are disposed on one side of the turbulence part 22 along the third direction Z, which intersects the first direction X and the second direction Y.

[0072] Please refer to Figure 6 In some embodiments, multiple heat-conducting parts 23 are disposed on both sides of the turbulence-disrupting part 22 along the third direction Z. Multiple heat-conducting parts 23 located on the same side of the turbulence-disrupting part 22 are spaced apart along the second direction Y. That is, two adjacent heat-conducting parts 23 located on the same side are each connected to one turbulence-disrupting part 22, and adjacent heat-conducting parts 23 are spaced apart and extend along the second direction Y. Each turbulence-disrupting part 22 and its connected heat-conducting part 23 form an L-shape. In this case, the turbulence-disrupting part 22 and the heat-conducting part 23 can be processed by sheet metal bending, which is convenient to manufacture. Alternatively, the turbulence-disrupting part and the heat-conducting part can be fixed together by welding, or the turbulence-disrupting part and the heat-conducting part can be integrally formed by pultrusion molding. Please refer to... Figure 8In some other embodiments, the heat-conducting portion 23 can also be arranged between the two ends of the turbulence portion 22 along the third direction Z, i.e., the orthographic projection of the heat-conducting portion 23 on the turbulence portion 22 along the second direction Y is located between the two ends of the turbulence portion 22 along the third direction Z.

[0073] Please refer to Figure 5 , Figure 6 and Figure 9 In some embodiments, the first condensing portion 21 comprises two first surfaces 2111 and two second surfaces 2112, the two first surfaces 2111 are oppositely arranged along the third direction Z, the two second surfaces 2112 are oppositely arranged along the second direction Y, the two first surfaces 2111 and the two second surfaces 2112 are connected and enclose the first condensing channel 211; the heat-conducting portion 23 is connected to the first surface 2111, and the second surface 2112 is connected to the turbulence portion 22 closest to it.

[0074] Specifically, in the case where the heat-conducting portion 23 is arranged on both sides of the turbulence portion 22 along the third direction Z, the heat-conducting portion 23 on each side is connected to the corresponding first surface 2111. The second surface 2112 closest to the turbulence portion 22 can be directly connected or indirectly connected, wherein the indirect connection is that a bending portion 24 is arranged on one side of the turbulence portion 22 along the third direction Z, the bending portion 24 extends along the second direction Y, and the second surface 2112 is connected to the bending portion 24, so that the second surface 2112 is connected to the turbulence portion 22 through the bending portion 24. In this embodiment, taking two adjacent rows of turbulence portions 22 as an example, in the second direction Y, among the turbulence portions 22 with relatively low positions, the turbulence portions 22 at the topmost side and the bottommost side are provided with bending portions 24, and among the turbulence portions 22 with relatively high positions, the turbulence portion 22 at the bottommost side is provided with a bending portion 24, and the bending portion 24 is used to make the turbulence portions 22 in the first row and the last row have a common plane, thereby facilitating the connection with the second surface 2112.

[0075] The whole formed by the turbulence portion 22, the heat-conducting portion 23 and the bending portion 24 connects the two first surfaces 2111 and the two second surfaces 2112, which helps to increase the pressure resistance of the condensing assembly 2.

[0076] Please refer to Figure 10 In some embodiments, the condensing assembly 2 further comprises one or more second condensing portions 25, the second condensing portion 25 is provided with a second condensing channel 251 extending along the first direction X, the second condensing channel 251 is in communication with the accommodation cavity 111, and the second condensing portion 25 is arranged below the first condensing portion 21 along the second direction Y and connected to the first condensing portion 21.

[0077] Specifically, the second condensing channel 251 is an independent cavity structure, which is different from the first condensing channel 211 in that no turbulence portion 22 is arranged inside. The first condensing portion 21 and the second condensing portion 25 are arranged in sequence along the second direction Y and connected into a whole, and the first condensing portion 21 and the second condensing portion 25 are jointly inserted into a through hole 121, and communicate with the containing cavity 111 through the through hole 121. Since the gaseous working medium is relatively light, most of it enters the first condensing channel 211, and the liquid working medium enters the second condensing channel 251 below under the action of gravity, so that the liquid working medium is concentrated, and the second condensing channel 251 is independent of the first condensing channel 211, which can avoid mutual interference on the one hand, and enable the refluxing liquid to quickly flow to the containing cavity 111 on the other hand.

[0078] Please refer to Figure 10 In some embodiments, the first condensing portion 21 and the second condensing portion 25 are connected to each other at an end away from the first opening 212. The connection can be achieved by connecting the first condensing channel 211 and the second condensing channel 251 through a pipeline, or by connecting the first condensing channel 211 and the second condensing channel 251 directly to the containing cavity 111 through a pipeline, or by penetrating the first condensing channel 211 and the second condensing channel 251 along the first direction X, and jointly arranging a blocking portion on the side of the first condensing portion 21 and the second condensing portion 25 away from the evaporation assembly 1, wherein the side of the blocking portion facing the evaporation assembly 1 has a concave chamber, and the first condensing channel 211 and the second condensing channel 251 are connected to each other through the chamber. When the liquid working medium and the gaseous working medium move in the same direction, the liquid working medium in the first condensing channel 211 and the second condensing channel 251 can converge downward when reaching the end, thereby reducing the possibility of mutual interference between the liquid working medium and the gaseous working medium flowing in the opposite direction along the turbulence portion 22.

[0079] Please refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the first condensing portion 21 is provided with a second opening 213 connected to the first condensing channel 211 at an end away from the first opening 212. The heat dissipation device further comprises a cover plate 3, which is arranged on the second opening 213 and connected to the first condensing portion 21, and the cover plate 3 is provided with a converging cavity 31 connected to the second opening 213 on the side facing the first condensing portion 21. The structure of the cover plate 3 enables the first condensing portion 21 to have different blocking forms at the end away from the first opening 212, which can be designed according to actual needs. Especially in the case of multiple first condensing portions 21 and / or multiple rows of turbulence portions 22, the converging cavity 31 enables the liquid working medium to fall and converge at the second opening 213 while keeping the path of forward flow, so that the convergence and reflux of the liquid working medium are located in the outer side region of the gaseous working medium, thereby reducing the mutual interference between the liquid working medium and the gaseous working medium.

[0080] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 11 , in some embodiments, the cross section of the spoiler 22 is circular or polygonal, and the whole is in a cylindrical structure.

[0081] Please refer to Figure 10 , for example, the cross section of the spoiler 22 is in a quadrilateral structure, which has two pairs of long sides and two pairs of short sides, and one of the short sides is opposite to the accommodating cavity 111, so as to reduce the blocking area of the fluid.

[0082] Please refer to Figure 1 , for example, the cross section of the spoiler 22 is in a regular hexagon, and the edges are rounded to help the fluid flow smoothly.

[0083] Please refer to Figure 3 , Figure 4 and Figure 6 , in some embodiments, the spoiler 22 extends along the first direction X and is in a plate shape.

[0084] Correspondingly, the power conversion device provided by the embodiment of the present application comprises the heat dissipation device of the above-mentioned embodiment. The power conversion device can be an inverter, a converter, a motor controller, a transformer, a rectifier, etc. The heat generated by the power conversion device during operation is used as the heat source of the evaporation assembly 1, and the cooling of the device is realized through the phase change of the working medium. The power conversion device can have all the technical features and beneficial effects of the heat dissipation device described above, and will not be described here.

[0085] In the above-mentioned embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0086] The heat dissipation device provided by the embodiment of the present application is described in detail above, and the principle and implementation manner of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the technical solutions and core ideas of the present application; those skilled in the art should understand that they can still modify the technical solutions recorded in the above-mentioned embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat dissipation device, characterized in that, include: An evaporation assembly (1) has a receiving cavity (111); The condensation assembly (2) includes a first condensation section (21), which is provided with a first condensation channel (211) extending along a first direction (X). The first condensation channel (211) has a first opening (212) and the first opening (212) communicates with the receiving cavity (111). The first condensation section is provided with a plurality of turbulence sections (22), which are located in the first condensation channel (211) and arranged along the first direction (X). Two adjacent turbulence sections (22) are spaced apart and are connected to the first condensation section (21).

2. The heat dissipation device according to claim 1, characterized in that, The plurality of the flow-dispersing parts (22) are arranged in a row along the first direction (X), and the condensation assembly (2) includes multiple rows of the flow-dispersing parts (22), which are arranged along a second direction (Y) that intersects with the first direction (X). Each flow-dispersing part (22) has a gap between itself and its neighboring flow-dispersing part (22).

3. The heat dissipation device according to claim 2, characterized in that, The orthographic projection portions of two adjacent rows of the turbulence section (22) overlap on the same projection plane along the first direction (X).

4. The heat dissipation device according to claim 2, characterized in that, The orthographic projections of two adjacent rows of the disturbance section (22) along the first direction (X) on the same projection plane are spaced apart from each other.

5. The heat dissipation device according to claim 2, characterized in that, In the first direction (X), two adjacent spoilers (22) are spaced apart along the second direction (Y); The condensation assembly (2) also includes a plurality of heat-conducting parts (23), and in the second direction (Y), two adjacent turbulence-disrupting parts (22) are connected through the heat-conducting parts (23).

6. The heat dissipation device according to claim 5, characterized in that, Multiple heat-conducting parts (23) are disposed on one side of the turbulence-disrupting part (22) along a third direction (Z), which intersects the first direction (X) and the second direction (Y); Alternatively, multiple heat-conducting parts (23) are disposed on both sides of the turbulence-disrupting part (22) along the third direction (Z), and multiple heat-conducting parts (23) located on the same side of the turbulence-disrupting part (22) are spaced apart along the second direction (Y).

7. The heat dissipation device according to claim 6, characterized in that, The first condensation channel (211) includes two first surfaces (2111) and two second surfaces (2112), the two first surfaces (2111) are arranged opposite each other along the third direction (Z), and the two second surfaces (2112) are arranged opposite each other along the second direction (Y); The heat-conducting part (23) is connected to the first surface (2111), and the second surface (2112) is connected to the nearest turbulence part (22).

8. The heat dissipation device according to any one of claims 1 to 6, characterized in that, The condensation assembly (2) includes a plurality of first condensation sections (21) arranged along the second direction (Y), and two adjacent first condensation sections (21) are connected to each other; Alternatively, at least one of the first condensation sections (21) is spaced apart from the adjacent first condensation sections (21); The first opening (212) of each of the first condenser sections (21) communicates with the receiving cavity (111) and is sealed to the evaporation assembly (1).

9. The heat dissipation device according to any one of claims 1 to 6, characterized in that, The condensation assembly (2) further includes one or more second condensation sections (25), each of which is provided with a second condensation channel (251) extending along a first direction (X). The second condensation section (25) is located below the first condensation section (21) along a second direction (Y) and is connected to the first condensation section (21).

10. The heat dissipation device according to claim 9, characterized in that, The first condenser (21) and the second condenser (25) are connected to each other at the ends away from the first opening (212).

11. The heat dissipation device according to claim 1 or 2, characterized in that, The first condenser (21) has a second opening (213) that connects to the first condenser channel (211) at one end away from the first opening (212); The heat dissipation device also includes a cover plate (3), which covers the second opening (213) and is connected to the first condensation part (21). The cover plate (3) has a manifold (31) communicating with the second opening (213) on the side facing the first condensation part (21).

12. The heat dissipation device according to any one of claims 1 to 6, characterized in that, The spoiler (22) extends along the first direction (X); Alternatively, the cross-section of the turbulence section (22) may be circular or polygonal.

13. A power conversion device, characterized in that, Includes the heat dissipation device as described in any one of claims 1 to 12.

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