Radiator

Abstract

The utility model provides a radiator, which comprises a radiating body provided with an installation side and a radiating side which are oppositely arranged, the installation side is used for installing a heating electronic element or being attached to the heating electronic element, and the radiator is provided with a heat exchange medium runner used for circulation of a heat exchange medium. The heat exchange medium flow channel is at least partially located in the heat dissipation body between the mounting side and the heat dissipation side, and the maximum section of the part, from the center position of the heat exchange medium flow channel to one side of the mounting side, of the heat dissipation body is gradually reduced in the thickness direction of the heat dissipation body, facing the mounting side, of the heat dissipation side. By adopting the scheme, the change of the maximum section from the center position of the heat exchange medium runner to one side of the mounting side is limited, so that the effective heat exchange area between the heat exchange medium runner in which the heat exchange medium flows and the mounting side is favorably increased, and the heat dissipation body is prevented from being damaged when the maximum section in the thickness direction of the heat dissipation body is constant. And the heat exchange efficiency between the bottom surface of the heat exchange medium flow channel close to the mounting side and the mounting side is high, so that the heat dissipation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a radiator technical field, specifically, relate to a radiator. BACKGROUND

[0002] Due to the electronic components such as frequency conversion module applied to air conditioner frequency converter and electronic device in electronic device, the electronic heat phenomenon is usually generated in the application process, if the heat is not discharged in time, the component failure and other problems are caused, and the short circuit and even the fire phenomenon are caused in serious case. Therefore, the radiator is usually installed on the back of the frequency conversion module, electronic device and other electronic components for taking away the heat generated by the components.

[0003] At present, the common radiator includes a radiator body and a medium pipeline, the medium pipeline is at least partially arranged on the radiator body and is used for forming a heat exchange medium flow channel passing through the radiator body, and an electronic component is arranged on one side of the radiator body in a bonded mode, and a heat exchange medium flows in the heat exchange medium flow channel to dissipate heat for the electronic component. However, since the maximum cross section of the part of the existing radiator body from the heat exchange medium flow channel to the side of the electronic component on the radiator body is constant in the thickness direction of the radiator body (for example, the cross section of the radiator body from the heat exchange medium flow channel to the side of the electronic component on the radiator body is rectangular), the effective heat exchange area and the heat conduction effect are poor, the heat dissipation efficiency is not high, the heat dissipation of the heat exchange medium in the heat exchange medium flow channel to the electronic component is not facilitated, and the heat exchange efficiency of the radiator is affected. SUMMARY

[0004] The utility model provides a radiator to improve the heat dissipation effect efficiency of radiator.

[0005] In order to realize the above-mentioned purpose, the utility model provides a radiator, the radiator includes a radiator body, the radiator body has oppositely arranged installation side and heat dissipation side in its thickness direction, the installation side is used for installing the heating electronic component or is bonded with the heating electronic component, the radiator has the heat exchange medium flow channel for the heat exchange medium circulation, the heat exchange medium flow channel is at least partially located in the radiator body between the installation side and the heat dissipation side, in the thickness direction of the radiator body from the heat dissipation side to the installation side, the maximum cross section of the part of the radiator body from the center position of the heat exchange medium flow channel to the installation side side gradually reduces.

[0006] Further, the mounting side and the heat dissipation side are connected through a plurality of transition surfaces, or the mounting side and the heat dissipation side are directly connected; the heat dissipation body has a flow channel center plane parallel to at least part of the heat dissipation side, a center line of the heat exchange medium flow channel is located on the flow channel center plane, the flow channel center plane intersects with the transition surface or the mounting side to form an intersection line, a bottom end of the mounting side away from the heat dissipation side has at least one bottom line parallel to the intersection line, the intersection line and the bottom line adjacent thereto are connected to form an inclined surface inclined relative to a thickness direction of the heat dissipation body, and an inclination angle of the inclined surface is 15°-45°.

[0007] Further, the heat dissipation body has a projection plane parallel to a thickness direction and a width direction of the heat dissipation body and perpendicular to a length direction of the heat dissipation body, and a projection of the mounting side on the projection plane has a cross-sectional shape of a semicircle, a straight line, a flat-bottomed bowl, a round-bottomed bowl or a trapezoid.

[0008] Further, a minimum wall thickness between the heat exchange medium flow channel and the heat dissipation side is greater than a minimum wall thickness between the heat exchange medium flow channel and the mounting side.

[0009] Further, the mounting side is a rectangular plane parallel to at least part of the heat dissipation side, a cross-sectional shape of the heat exchange medium flow channel at an arbitrary position in an axial direction thereof is the same, the mounting side is opposite to the heat dissipation side, a width of the mounting side is less than a length of the heat dissipation side, and / or a width of the mounting side is less than a width of the heat dissipation side.

[0010] Further, the heat dissipation side has a heat dissipation protrusion, the heat dissipation protrusion is opposite to the heat exchange medium flow channel in a thickness direction of the heat dissipation body, and at least part of the heat exchange medium flow channel in the thickness direction is located in the heat dissipation protrusion.

[0011] Further, in a direction of the heat dissipation side toward the mounting side, a width of the heat dissipation protrusion gradually decreases.

[0012] Further, a surface of the heat dissipation side avoiding the heat dissipation protrusion is a flat heat dissipation surface, at least part of a surface of the flat heat dissipation surface, and / or at least part of a surface of the heat dissipation protrusion is wavy and meandering, and / or is jagged and meandering, and an extension direction of a plurality of meandering grooves formed by the meandering is parallel to an extension direction of the heat dissipation protrusion and / or the heat exchange medium flow channel.

[0013] Further, the surface of the heat dissipation side avoiding the heat dissipation protrusion is the flat heat dissipation surface, and the heat dissipation body further comprises a plurality of fins, the plurality of fins are distributed on at least part of the flat heat dissipation surface and / or at least part of the surface of the heat dissipation protrusion, and a heat dissipation gap for air flow is formed between any two adjacent fins.

[0014] Further, the fins extend along an axial direction of the heat exchange medium flow channel, in the axial direction of the heat exchange medium flow channel, two ends of any one fin extend to two ends of the heat dissipation side respectively, top ends of the plurality of fins away from the mounting side are flush, and a surface where end portions of the plurality of fins are located is parallel to the flat heat dissipation surface.

[0015] The technical scheme of the utility model provides a radiator, the radiator includes a radiator body, the radiator body has oppositely arranged installation side and radiating side in its thickness direction, the installation side is used for installing a heating electronic element or being attached with the heating electronic element, the radiator has a heat exchange medium flow channel for heat exchange medium circulation, the heat exchange medium flow channel is at least partially located in the radiator body between the installation side and the radiating side, and in the thickness direction of the radiator body from the radiating side to the installation side, the maximum cross section of the part of the radiator body from the center position of the heat exchange medium flow channel to the installation side gradually decreases.

[0016] By the scheme, at least part of the heat generated by the heating electronic element on the installation side is radiated through the heat exchange between the radiating side and the external environment, and the other part of the heat is radiated through the heat exchange with the heat exchange medium in the heat exchange medium flow channel, so that the installation side and the heating electronic element are cooled. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification provide further understanding of the utility model, the illustrative embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation on the utility model.

[0018] Figure 1 Fig. 1 shows the structure schematic view of the radiator provided by the embodiment one of the utility model;

[0019] Figure 2 Fig. 2 shows the structure schematic view of the radiator of Fig. 1 from another perspective; Figure 1

[0020] Figure 3 Fig. 3 shows the A-A sectional view of Fig. 1; Figure 2

[0021] Figure 4 Fig. 4 shows the A-A sectional view of the radiator provided by the embodiment seven of the utility model;

[0022] Figure 5 Fig. 5 shows the A-A sectional view of the radiator provided by the embodiment eight of the utility model;

[0023] Figure 6 Fig. 6 shows the A-A sectional view of the radiator provided by the embodiment two of the utility model; ​​

[0024] Figure 7 Figure 3 shows an A-A sectional view of the heat sink provided by the third embodiment of the present application;

[0025] Figure 8 Figure 4 shows an A-A sectional view of the heat sink provided by the fourth embodiment of the present application;

[0026] Figure 9 Figure 5 shows an A-A sectional view of the heat sink provided by the fifth embodiment of the present application;

[0027] Figure 10 Figure 6 shows an A-A sectional view of the heat sink provided by the sixth embodiment of the present application.

[0028] Among them, the above-mentioned drawings include the following reference signs:

[0029] 101, heat exchange medium flow channel; 1011, center surface; 1012, inclined surface;

[0030] 102, installation side;

[0031] 103, heat dissipation side; 1031, heat dissipation protrusion; 1032, flat heat dissipation surface; 1033, meandering groove; 1034, meandering protrusion;

[0032] 104, heat dissipation gap;

[0033] 10, heat dissipation body;

[0034] 20, medium pipeline; 21, bent pipe section; 22, straight pipe section;

[0035] 30, fin. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely 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. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] As Figures 1 to 10As shown, the embodiment of the utility model provides a radiator, the radiator includes radiator body 10, radiator body 10 has oppositely arranged installation side 102 and radiating side 103 in its thickness direction, installation side 102 is used to install heating electronic element or is attached with heating electronic element, and the radiator has heat exchange medium flow channel 101 for heat exchange medium circulation, and heat exchange medium flow channel 101 is at least partially located in the radiator body 10 between installation side 102 and radiating side 103, in the thickness direction of radiator body 10 towards installation side 102 of radiating side 103, the maximum cross section of the part of radiator body 10 from heat exchange medium flow channel 101 center position to installation side 102 side gradually reduces.

[0038] In the embodiment, at least part of the heat generated by the heating electronic element of installation side 102 is radiated by heat exchange with the external environment through radiating side 103, and another part of the heat is radiated by heat exchange with the heat exchange medium in heat exchange medium flow channel 101, thereby realizing the heat dissipation and cooling of installation side 102 and the heating electronic element. The embodiment limits the change of the maximum cross section of heat exchange medium flow channel 101 from the center position to installation side 102 side, which is beneficial to improve the effective heat exchange area between heat exchange medium flow channel 101 with heat exchange medium and installation side 102, improve the heat conduction effect, and avoid the case that when the maximum cross section of radiator body 10 in the thickness direction is constant (such as the cross section shape is rectangular), only the bottom surface of heat exchange medium flow channel 101 close to installation side 102 side has high heat exchange efficiency with installation side 102, which is beneficial to improve the heat dissipation efficiency of the radiator.

[0039] Specifically, installation side 102 and radiating side 103 are connected through a plurality of adapter surfaces, or installation side 102 and radiating side are directly connected; the radiator body 10 has a flow channel center surface 1011 parallel to at least part of the radiating side 103, the center line of the heat exchange medium flow channel 101 is located on the flow channel center surface 1011, the intersection line is formed at the intersection position of the flow channel center surface 1011 and the adapter surface or installation side 102, the bottom end of installation side 102 away from radiating side 103 has at least one bottom line parallel to the intersection line, the intersection line and the bottom line close to it are connected to form an inclined surface 1012 inclined to the thickness direction of the radiator body 10, and the inclination angle of the inclined surface 1012 is 15°-45°.

[0040] In this way, by limiting the inclination angle, the effective heat exchange area of the heat exchange medium flow channel 101 to the mounting side 102 can be obviously improved when the inclination angle of the inclined surface 1012 is less than 15°, and the effective heat exchange area of the heat exchange medium flow channel 101 to the mounting side 102 cannot be obviously improved when the inclination angle of the inclined surface 1012 is greater than 45°, which can cause the heat dissipation body 10 to be too small to set the heat exchange medium flow channel 101, and the heat exchange medium flow channel 101 is too small and the heat exchange area is concentrated, thereby still causing the effective heat exchange area of the heat exchange medium flow channel 101 to the mounting side 102 to be obviously improved.

[0041] In the present embodiment, the cross-sectional shape of the heat exchange medium flow channel 101 at any position in the axial direction thereof is the same, the mounting side 102 is opposite to the heat dissipation side 103, the width of the mounting side 102 is less than the length of the heat dissipation side 103, and / or the width of the mounting side 102 is less than the width of the heat dissipation side 103. In this way, the area of the heat dissipation side 103 is greater than the area of the mounting side 102, which is conducive to heat dissipation of the heat exchange medium in the heat exchange medium flow channel 101, and the limitation of the cross section of the heat exchange medium flow channel 101 is conducive to improving the heat exchange effect of the heat exchange medium flow channel 101 and the mounting side 102 on the basis of ensuring the stability of the fluid flow in the heat exchange medium flow channel 101, thereby improving the heat exchange efficiency.

[0042] Specifically, as shown in the first embodiment, Figure 3 the heat dissipation body 10 has a projection surface parallel to the thickness direction and the width direction of the heat dissipation body 10 and perpendicular to the length direction of the heat dissipation body 10, the projection of the mounting side 102 on the projection surface is a straight line, that is, the mounting side 102 is a plane parallel to at least part of the heat dissipation side 103, the mounting side 102 is a rectangular plane in the present embodiment, the length of the mounting side 102 is the same as that of the heat dissipation side 103, the width of the heat dissipation side 103 is greater than that of the mounting side 102, the mounting side 102 and the heat dissipation side 103 are connected by four transition surfaces, two transition surfaces in the length direction of the heat dissipation body 10 are rectangular planes perpendicular to the mounting side 102, two transition surfaces in the width direction of the heat dissipation body 10 are inclined planes inclined to the thickness direction of the heat dissipation body 10, and the part of the inclined plane between the central surface 1011 and the mounting side 102 is the inclined surface 1012.

[0043] Preferably, the cross-sectional shape of the mounting side 102 can be adaptively adjusted according to actual conditions, such as a semicircular shape, a flat-bottomed bowl shape, a round-bottomed bowl shape, or a trapezoidal shape on the projection surface of the mounting side 102. For example, in the seventh embodiment as shown in Figure 4 the projection of the mounting side 102 on the projection surface is a trapezoidal shape, and in the present embodiment, the inclined part of the mounting side 102 forms the inclined surface 1012; or, in the eighth embodiment as shown in Figure 5 the projection of the mounting side 102 on the projection surface is a flat-bottomed bowl shape.

[0044] In this embodiment, the heat exchange medium flow channel 101 has a circular cross-sectional shape, specifically a semi-circular cross-sectional shape between the center surface 1011 and the mounting side 102. This facilitates the processing and shaping of the heat exchange medium flow channel 101 and promotes the smooth flow of the heat exchange medium within it. Preferably, the cross-sectional shape of the heat exchange medium flow channel 101 can also be adapted to the actual situation. For example, the cross-sectional shape of the heat exchange medium flow channel 101 between the center surface 1011 and the mounting side 102 can be a flat-bottomed bowl shape, a round-bottomed bowl shape, or a trapezoidal shape.

[0045] like Figures 3 to 5 As shown, in this embodiment, the minimum wall thickness between the heat exchange medium flow channel 101 and the heat dissipation side 103 is ( Figures 3 to 5 H2) is greater than the minimum wall thickness between the heat exchange medium flow channel 101 and the mounting side 102. Figures 3 to 5 (H1 in the middle).

[0046] This embodiment specifies the minimum wall thickness between the heat exchange medium flow channel 101 and the heat dissipation side 103. Figures 3 to 5 The minimum wall thickness between H2 and the heat exchange medium flow channel 101 and the mounting side 102 (in the middle) Figures 3 to 5 The limitation of H1 in the heat exchange medium flow channel 101, while ensuring the structural strength of the heat exchanger, makes the heat exchange medium flow channel 101 closer to the mounting side 102 than the heat dissipation side 103. This avoids the situation where the heat dissipation effect is poor on the side closer to the mounting side 102 when most of the heat exchange medium flow channel is closer to the heat dissipation side 103. This is conducive to the heat transfer of heat from the heat exchange medium in the heat exchange medium flow channel 101 to the mounting side 102 and the heat-generating element on the mounting side 102, thereby improving the heat dissipation efficiency of the heat exchanger.

[0047] like Figures 1 to 10 As shown, the heat dissipation side 103 has a heat dissipation protrusion 1031, which is directly opposite the heat exchange medium flow channel 101 in the thickness direction of the heat sink, and at least a portion of the heat exchange medium flow channel 101 in the thickness direction is located within the heat dissipation protrusion 1031.

[0048] This configuration helps to reduce the minimum distance between the installation side 102 and the heat dissipation side 103 while ensuring the flow cross-section of the heat exchange medium channel 101. It is also more conducive to the heat transfer efficiency to the heat dissipation side 103, and further improves the heat dissipation effect of the radiator.

[0049] like Figures 2 to 10 As shown, the width of the heat dissipation protrusion 1031 gradually decreases in the direction from the heat dissipation side 103 to the mounting side 102. This design facilitates the processing and shaping of the heat dissipation protrusion 1031 while ensuring its functionality.

[0050] Specifically, such asFigure 8 and Figure 9 As shown in FIG. 1, the surface of the heat dissipation side 103 avoiding the heat dissipation protrusions 1031 is a flat heat dissipation surface 1032. At least part of the surface of the flat heat dissipation surface 1032 and / or at least part of the surface of the heat dissipation protrusions 1031 is wavelike and zigzag. The extension direction of the plurality of wavelike and zigzag grooves 1033 formed by the wavelike and zigzag is parallel to the extension direction of the heat dissipation protrusions 1031 and / or the heat exchange medium flow channel 101. Such arrangement is conducive to further improving the heat dissipation efficiency of the heat sink.

[0051] In the embodiment two as shown in FIG. 2, each flat heat dissipation surface 1032 is zigzag. The surface of the side of the heat dissipation protrusions 1031 away from the flat heat dissipation surface 1032 and parallel to the flat heat dissipation surface 1032 is zigzag. The extension direction of the plurality of zigzag grooves 1033 formed by the zigzag is parallel to the axial direction of the heat exchange medium flow channel 101 and extends to both ends of the heat dissipation side 103 in the axial direction of the heat exchange medium flow channel 101. Figure 8 In the embodiment three as shown in FIG. 3, each flat heat dissipation surface 1032 is wavelike. The surface of the side of the heat dissipation protrusions 1031 away from the flat heat dissipation surface 1032 and parallel to the flat heat dissipation surface 1032 is wavelike. The extension direction of the plurality of wavelike grooves 1033 and wavelike protrusions 1034 formed by the wavelike is parallel to the axial direction of the heat exchange medium flow channel 101 and extends to both ends of the heat dissipation side 103 in the axial direction of the heat exchange medium flow channel 101.

[0052] Figure 9 In the embodiment four as shown in FIG. 4, each flat heat dissipation surface 1032 is zigzag. The surface of the side of the heat dissipation protrusions 1031 away from the flat heat dissipation surface 1032 and parallel to the flat heat dissipation surface 1032 is zigzag. The extension direction of the plurality of zigzag grooves 1033 formed by the zigzag is parallel to the axial direction of the heat exchange medium flow channel 101 and extends to both ends of the heat dissipation side 103 in the axial direction of the heat exchange medium flow channel 101.

[0053] In the embodiment five as shown in FIG. 5, each flat heat dissipation surface 1032 is wavelike. The surface of the side of the heat dissipation protrusions 1031 away from the flat heat dissipation surface 1032 and parallel to the flat heat dissipation surface 1032 is wavelike. The extension direction of the plurality of wavelike grooves 1033 and wavelike protrusions 1034 formed by the wavelike is parallel to the axial direction of the heat exchange medium flow channel 101 and extends to both ends of the heat dissipation side 103 in the axial direction of the heat exchange medium flow channel 101. Figure 6 and Figure 7 As shown in FIG. 6, the surface of the heat dissipation side 103 avoiding the heat dissipation protrusions 1031 is a flat heat dissipation surface 1032. The heat sink further comprises a plurality of fins 30. The plurality of fins 30 are distributed on at least part of the flat heat dissipation surface 1032 and / or at least part of the surface of the heat dissipation protrusions 1031. The heat dissipation gap 104 for air flow is formed between any two adjacent fins 30.

[0054] Such arrangement is conducive to further increasing the heat exchange area between the heat dissipation side 103 and the external environment, thereby improving the heat exchange effect of the heat sink. Specifically, in the embodiment two as shown in FIG. 7, the plurality of fins 30 are uniformly distributed on each flat heat dissipation surface 1032. The surface of the side of the heat dissipation protrusions 1031 away from the flat heat dissipation surface 1032 and parallel to the flat heat dissipation surface 1032 is also uniformly distributed with the plurality of fins 30. Figure 6 In the embodiment three as shown in FIG. 8, the plurality of fins 30 are distributed on each flat heat dissipation surface 1032. The heat dissipation protrusions 1031 are not provided with fins 30. Figure 7

[0055] ​​The fins 30 extend along the axial direction of the heat exchange medium flow channel 101, and the two ends of any fin 30 extend to the two ends of the heat dissipation side 103 in the axial direction of the heat exchange medium flow channel 101; the top ends of the plurality of fins 30 away from the mounting side 102 are flush, and the surfaces where the ends of the plurality of fins 30 are located are parallel to the flat heat dissipation surface 1032.

[0056] The plurality of fins 30 in the embodiment are parallel to each other, so that the overall structure of the heat sink is more compact and conducive to ensuring the gas flow effect in the plurality of heat dissipation gaps 104 formed between the plurality of fins 30. Specifically, in the second embodiment as shown in FIG. 2B, the plurality of fins 30 extend to the surface parallel to the flat heat dissipation surface 1032 on the side away from the flat heat dissipation surface 1032 of the heat dissipation protrusion 1031. Figure 6 Figure 7 In the third embodiment as shown in FIG. 2C, the plurality of fins 30 extend to the surface parallel to the flat heat dissipation surface 1032 on the side away from the flat heat dissipation surface 1032 of the heat dissipation protrusion 1031 and are flush with the surface.

[0057] As shown in FIG. 2D, the heat sink further includes a medium pipeline 20, and the heat dissipation body 10 has at least one passage. Figures 1 to 10 As shown in FIG. 2E, the medium pipeline 20 passes through the passage and forms the heat exchange medium flow channel 101 inside; or as shown in FIG. 2F, the inlet and outlet of the passage are both communicated with the medium pipeline 20, and the cavity of the medium pipeline 20 and the passage jointly form the heat exchange medium flow channel 101. Figure 10 Figure 1 Figure 9 In this way, the heat exchange medium is facilitated to exchange heat with the heat dissipation body 10, and the heat dissipation effect of the heat dissipation body 10 is ensured.

[0058] Specifically, the heat dissipation body 10 has a plurality of parallel passages; the heat exchange medium flow channel 101 is a bent flow channel, the medium pipeline 20 includes a bent pipe section 21 and a straight pipe section 22, any one passage is correspondingly provided with one straight pipe section 22, the straight pipe section 22 is at least partially arranged in the passage, and the bent pipe section 21 is arranged at one end of the heat dissipation body 10 and has two ends respectively used to communicate with two adjacent straight pipe sections 22. In this way, by the bending arrangement of the heat exchange medium flow channel 101, the flow length and area of the heat exchange medium in the heat dissipation body 10 are increased, and the heat exchange and cooling effect of the heat exchange medium on the heat dissipation body 10 are ensured.

[0059] ​​​Preferably, the cavity and the plurality of channels of the medium pipeline 20 in the embodiment jointly form a heat exchange medium flow channel 101, which is arranged such that the heat exchange medium can directly exchange heat with the heat dissipation body 10 in the heat dissipation body 10, without needing to first conduct heat in the heat dissipation body 10 and then exchange heat with the heat dissipation body 10, which is beneficial to improving the heat exchange effect and the heat exchange efficiency.

[0060] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0061] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application, unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the related art can not be discussed in detail, but under appropriate circumstances, the technology, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so further discussion is not needed if an item is defined in one drawing.

[0062] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0063] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well, the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0064] In addition, it needs to be explained that the use of "first", "second" and the like words to limit the parts, only for the convenience of the corresponding parts for the distinction, such as no other declaration, the above words have no special meaning, therefore can not be understood as the restriction of the scope of protection of the utility model.

[0065] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat sink, characterized by, The heat sink comprises a heat dissipation body (10) having an installation side (102) and a heat dissipation side (103) oppositely arranged in the thickness direction of the heat dissipation body (10), the installation side (102) being used for mounting or abutting against a heat generating electronic component, the heat sink having a heat exchange medium flow channel (101) for the flow of heat exchange medium, the heat exchange medium flow channel (101) being at least partially located in the heat dissipation body (10) between the installation side (102) and the heat dissipation side (103), and in the thickness direction of the heat dissipation body (10) from the heat dissipation side (103) towards the installation side (102), the maximum cross section of the portion of the heat dissipation body (10) from the center of the heat exchange medium flow channel (101) to the installation side (102) gradually decreases.

2. The heat spreader of claim 1, wherein, The installation side (102) and the heat dissipation side (103) are connected by a plurality of transition surfaces, or the installation side (102) and the heat dissipation side (103) are directly connected; the heat dissipation body (10) has a flow channel center surface (1011) parallel to at least part of the heat dissipation side (103), the center line of the heat exchange medium flow channel (101) is located on the flow channel center surface (1011), the intersection line is formed at the intersection position of the flow channel center surface (1011) and the transition surface or the installation side (102), the bottom end of the installation side (102) away from the heat dissipation side (103) has at least one bottom line parallel to the intersection line, the intersection line and the bottom line close to it are connected to form an inclined surface (1012) inclined compared to the thickness direction of the heat dissipation body (10), and the inclination angle of the inclined surface (1012) is 15°-45°.

3. The heat spreader of claim 1, wherein, The heat dissipation body (10) has a projection surface parallel to the thickness direction and the width direction of the heat dissipation body (10) and perpendicular to the length direction of the heat dissipation body (10), and the projection shape of the installation side (102) on the projection surface is semicircular, straight line, flat bottom bowl, round bottom bowl or trapezoidal.

4. The heat spreader of claim 1, wherein, The minimum wall thickness between the heat exchange medium flow channel (101) and the heat dissipation side (103) is greater than the minimum wall thickness between the heat exchange medium flow channel (101) and the installation side (102).

5. The heat spreader of claim 1, wherein, The installation side (102) is a rectangular surface parallel to at least part of the heat dissipation side (103), the cross-sectional shape of the heat exchange medium flow channel (101) at any position in the axial direction is the same, the installation side (102) is opposite to the heat dissipation side (103), the width of the installation side (102) is less than the length of the heat dissipation side (103), and / or the width of the installation side (102) is less than the width of the heat dissipation side (103).

6. The heat sink of any one of claims 1-5, wherein, The heat dissipation side (103) has a heat dissipation protrusion (1031) opposite to the heat exchange medium flow channel (101) in the thickness direction of the heat sink, and at least part of the heat exchange medium flow channel (101) in the thickness direction is located in the heat dissipation protrusion (1031).

7. The heat sink of claim 6, wherein, The width of the heat dissipation protrusion (1031) gradually decreases in the direction from the heat dissipation side (103) to the mounting side (102).

8. The heat sink of claim 6, wherein, The surface of the heat dissipation side (103) avoiding the heat dissipation protrusion (1031) is a flat heat dissipation surface (1032). At least part of the surface of the flat heat dissipation surface (1032) and / or at least part of the surface of the heat dissipation protrusion (1031) is wavelike and zigzag, and the extension direction of the plurality of wavelike and zigzag grooves (1033) is parallel to the extension direction of the heat dissipation protrusion (1031) and / or the heat exchange medium flow channel (101).

9. The heat sink of claim 6, wherein, The surface of the heat dissipation side (103) avoiding the heat dissipation protrusion (1031) is a flat heat dissipation surface (1032). The heat sink further comprises a plurality of fins (30). The plurality of fins (30) are distributed on at least part of the flat heat dissipation surface (1032) and / or at least part of the surface of the heat dissipation protrusion (1031). The heat dissipation gap (104) for air flow is formed between any two adjacent fins (30).

10. The heat sink of claim 9, wherein, The fin (30) extends along the axis direction of the heat exchange medium flow channel (101). In the axial direction of the heat exchange medium flow channel (101), the two ends of any one of the fins (30) respectively extend to the two ends of the heat dissipation side (103). The top ends of the plurality of fins (30) away from the mounting side (102) are flush, and the surface where the end portions of the plurality of fins (30) are located is parallel to the flat heat dissipation surface (1032).

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