Radiating fin and radiator

Abstract

The utility model provides a radiating fin and a radiator. The radiating fin comprises a fin body, a gas-liquid circulating flow channel arranged in the fin body and a flow channel opening formed in the fin body. The gas-liquid circulating flow channel diffuses and extends along the extension surface of the fin body from the flow channel opening, and is used for circulating a phase change working medium; the gas-liquid circulating flow channel at least comprises an outer-area flow channel and an inner-area flow channel, the outer-area flow channel is close to the edge of the fin body relative to the inner-area flow channel and away from the flow channel opening, and the flow passing width of the outer-area flow channel is larger than that of the inner-area flow channel. By means of the arrangement, the heat dissipation fin is applied to a phase change heat dissipation radiator, the heat dissipation fin serves as a component for increasing the heat exchange area, in the working process of the radiator, higher heat dissipation efficiency is achieved, and the problem that in the prior art, how to improve the heat dissipation efficiency of the radiator so as to meet the operation requirement of high-heat-yield equipment is solved.

Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation equipment, and in particular to a heat dissipation fin and a heat sink. Background Art

[0002] For some electronic devices such as servers and communication modules, due to their high heat generation, it is generally necessary to dissipate heat from the heating elements therein to ensure the normal operation of the equipment. In the prior art, a heat dissipation device is usually installed at the location of the heating element to achieve rapid heat dissipation. However, with the update and iteration of the equipment, the requirements for heat dissipation are getting higher and higher. How to improve the heat dissipation efficiency of the heat dissipation device is particularly important. Utility Model Content

[0003] In view of this, the present application provides a heat dissipation fin and a radiator to solve the problem in the prior art of how to improve the heat dissipation efficiency of the heat dissipation device to meet the operating requirements of high heat generation equipment.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A heat dissipation fin comprises a fin body, a gas-liquid circulation flow channel arranged in the fin body, and a flow channel opening arranged on the fin body;

[0006] The gas-liquid circulation channel diffuses and extends from the channel opening along the extension surface of the fin body and is used for circulating the phase-changing working medium;

[0007] The gas-liquid circulation channel at least includes an outer zone channel and an inner zone channel. The outer zone channel is closer to the edge of the fin body and away from the channel opening relative to the inner zone channel. The flow width of the outer zone channel is greater than the flow width of the inner zone channel.

[0008] Optionally, the portion where the gas-liquid circulation channel is connected to the channel opening is a converging channel, and the flow width of the converging channel is greater than the flow width of the outer zone channel.

[0009] Optionally, the gas-liquid circulation channel includes a plurality of gas-liquid flow channel units distributed in an array and / or staggered manner, and adjacent gas-liquid flow channel units have a common part to form the gas-liquid circulation channel.

[0010] Optionally, the gas-liquid circulation channel is in a honeycomb shape.

[0011] Optionally, the flow width surrounding any intersection of three adjacent gas-liquid flow channel units is greater than the flow width at other positions of the gas-liquid flow channel units.

[0012] Optionally, the outer zone flow channel includes at least one column and / or one row of the gas-liquid flow channel units adjacent to the edge of the fin body.

[0013] Optionally, the shape of the gas-liquid flow channel unit includes:

[0014] Ring;

[0015] and / or, an elliptical ring;

[0016] and / or, polygonal rings;

[0017] and / or, a ring formed by a plurality of arc edges;

[0018] And / or, a ring formed by a plurality of straight edges and a plurality of arc edges.

[0019] Optionally, the gas-liquid circulation channel is a Tesla channel.

[0020] A radiator, comprising a plate body and any one of the above-mentioned radiating fins;

[0021] The plate body is provided with a cavity;

[0022] The heat dissipation fins are provided in plurality and the flow channel openings are all connected to the plate body, so that each of the gas-liquid circulation channels is communicated with the cavity.

[0023] Optional,

[0024] The end of the heat dissipation fin where the flow channel opening is located is the first end, and the end away from the plate body is the second end;

[0025] When the radiator is in a vertical working state, the channel in the gas-liquid circulation channel away from the top side of the heat dissipation fin is a bottom channel, and the height of the bottom channel close to the second end is higher than that close to the first end.

[0026] Optionally, each of the heat dissipation fins is provided with a plurality of mutually independent flow channel openings and a plurality of mutually independent gas-liquid circulation channels, and an isolation portion is provided between adjacent gas-liquid circulation channels on the same heat dissipation fin, the width of the isolation portion is uniform, and when the radiator is in a working state, the height of the isolation portion close to the second end is higher than the height close to the first end.

[0027] The heat dissipation fin provided in the present application comprises a fin body, a gas-liquid circulation flow channel arranged in the fin body, and a flow channel opening arranged on the fin body; the gas-liquid circulation flow channel diffuses and extends from the flow channel opening along the extension surface of the fin body, and is used to circulate phase-change working fluid; the gas-liquid circulation flow channel comprises at least an outer zone flow channel and an inner zone flow channel, the outer zone flow channel is close to the edge of the fin body and away from the flow channel opening relative to the inner zone flow channel, and the flow width of the outer zone flow channel is greater than the flow width of the inner zone flow channel. With such a configuration, the heat dissipation fins are applied in a radiator with phase change heat dissipation. The heat dissipation fins serve as components for increasing the heat exchange area. During the operation of the radiator, the phase change medium enters and exits the fin body through the flow channel opening. When the phase change medium absorbs heat and becomes gaseous, it enters the gas-liquid circulation flow channel in the fin body. When diffusing in the gas-liquid circulation flow channel, since the flow width of the outer zone flow channel is wider than that of the inner zone flow channel, on the one hand, the gaseous phase change medium is easier to flow into the outer zone flow channel, and on the other hand, more phase change medium is gathered in the outer zone flow channel. The position of the outer zone flow channel is closer to the edge of the fin body, which can dissipate heat more quickly and condense into liquid, with higher heat dissipation efficiency, which solves the problem of how to improve the heat dissipation efficiency of the radiator in the prior art to meet the operation requirements of high heat generation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the structure of the heat dissipation fins provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the exploded structure of the radiator provided in an embodiment of the present application.

[0031] exist Figure 1-Figure 2 middle:

[0032] 1. Heat dissipation fins; 2. Plate body;

[0033] 11. Fin body; 12. Flow channel opening; 13. External zone flow channel; 14. Internal zone flow channel; 15. Converging flow channel; 16. Gas-liquid flow channel unit. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] like Figure 2 As shown, the embodiment of the present application provides a radiator, including a plate body 2 and a plurality of side-by-side heat dissipation fins 1, the plate body 2 is provided with a cavity, the heat dissipation fins 1 are provided with a flow channel opening 12, and a gas-liquid circulation flow channel connected to the flow channel opening 12, the heat dissipation fins 1 are plugged into the plate body 2, and the flow channel opening 12 is connected to the plate body 2, so that each gas-liquid circulation flow channel is connected to the cavity. After the radiator is installed in the working position, the plate body 2 is used to contact the heating element, and the phase change working medium circulates in the cavity of the plate body 2 and the gas-liquid circulation flow channel of the heat dissipation fin 1 to achieve phase change heat dissipation.

[0036] like Figure 1 As shown, the embodiment of the present application provides a heat dissipation fin 1, including a fin body 11, a gas-liquid circulation channel arranged in the fin body 11, and a channel opening 12 arranged on the fin body 11; the gas-liquid circulation channel extends from the channel opening 12 along the extension surface of the fin body 11, and the gas-liquid circulation channel is a flat hollow structure and is used to circulate the phase change medium; the gas-liquid circulation channel at least includes an outer zone channel 13 and an inner zone channel 14, the outer zone channel 13 is close to the edge of the fin body 11 and away from the channel opening 12 relative to the inner zone channel 14, and the flow width of the outer zone channel 13 is greater than the flow width of the inner zone channel 14. The gas-liquid circulation channel can generally be stamped or etched on one of the two component plates of the fin body 11. It should be noted that the flow width in the present application refers to the dimension of the channel perpendicular to the flow direction of the phase change medium when the phase change medium flows in the gas-liquid circulation channel.

[0037] In this way, the heat dissipation fin 1 is applied to a radiator of phase change heat dissipation. The heat dissipation fin 1 serves as a component for increasing the heat exchange area. During the operation of the radiator, the phase change medium enters and exits the fin body 11 through the flow channel opening 12. When the phase change medium absorbs heat and becomes gaseous, it enters the gas-liquid circulation channel in the fin body 11. When it diffuses in the gas-liquid circulation channel, since the flow width of the outer zone flow channel 13 is wider than that of the inner zone flow channel 14, on the one hand, the gaseous phase change medium is more likely to flow into the outer zone flow channel 13, and on the other hand, more phase change medium is gathered in the outer zone flow channel 13. The position of the outer zone flow channel 13 is closer to the edge of the fin body 11, so it can dissipate heat more quickly and condense into liquid, with higher heat dissipation efficiency, which solves the problem of how to improve the heat dissipation efficiency of the heat dissipation device in the prior art to meet the operation requirements of high heat generation equipment.

[0038] In a preferred embodiment, the portion where the gas-liquid circulation flow channel is connected to the flow channel opening 12 is a converging flow channel 15, and the flow width of the converging flow channel 15 is greater than the flow width of the outer zone flow channel 13. The gaseous phase-change medium gradually diffuses from the converging flow channel 15 to the outer zone flow channel 13 and the inner zone flow channel 14, and the liquid phase-change medium gradually flows back to the converging flow channel 15 from the outer zone flow channel 13 and the inner zone flow channel 14.

[0039] With such arrangement, the flow channel for the phase change medium to enter and exit the fin body 11 is widened, which is beneficial for the gaseous phase change medium to quickly and massively enter the gas-liquid circulation channel of the heat dissipation fin 1, thereby facilitating rapid diffusion for heat dissipation. At the same time, it is also beneficial for the condensed liquid phase change medium to quickly pass through the converging channel 15 and flow back into the cavity of the plate body 2. After experiments and verification, the heat dissipation effect of the heat dissipation fin 1 can be further optimized, and the heat dissipation efficiency of the radiator can be improved.

[0040] Specifically, under the premise that the size of the heat dissipation fins 1 allows, the flow width of the converging flow channel 15 can be set to be equal to the width of the corresponding heating element.

[0041] Regarding the distribution pattern of the gas-liquid circulation channel in the fin body 11, in a specific embodiment, the gas-liquid circulation channel is provided to include a plurality of array-distributed and / or staggered gas-liquid flow channel units 16, and adjacent gas-liquid flow channel units 16 have a common part to form a gas-liquid circulation channel.

[0042] With such arrangement, compared with the flow channels in the form of tree-like branching structures, the gas-liquid circulation flow channels in the present application have stronger connectivity at various locations, which provides a variety of circulation possibilities for the phase change medium, which is often in a gas-liquid mixed state in the gas-liquid circulation flow channels. The gaseous phase change medium and the liquid phase change medium naturally form areas that are conducive to their own rapid flow, respectively, which is very beneficial for the reciprocating circulation in the heat dissipation fins 1 and the plate body 2, thereby optimizing the heat dissipation effect.

[0043] Furthermore, the gas-liquid circulation flow channel is honeycomb-shaped, that is, the shape of a single gas-liquid flow channel unit 16 is hexagonal, and the flow width at the intersection of any three adjacent gas-liquid flow channel units 16 is greater than the flow width at other positions of the gas-liquid flow channel unit 16, or in other words, the flow width at the intersection of a gas-liquid flow channel unit 16 with other gas-liquid flow channel units 16 is greater than the flow width at the straight edge of the gas-liquid flow channel unit 16.

[0044] With such arrangement, although the flow direction of the phase-change medium changes at the intersection of the gas-liquid flow channel unit 16, the flow width is widened here, which is still conducive to the rapid passage of the gaseous or liquid phase-change medium and optimizes the heat dissipation efficiency of the radiator.

[0045] In a specific embodiment, based on the distinction between the outer zone flow channel 13 and the inner zone flow channel 14, the outer zone flow channel 13 includes at least one column and / or one gas-liquid flow channel unit 16 adjacent to the edge of the fin body 11. In this way, when the gas-liquid circulation flow channel is designed in the form of the above-mentioned gas-liquid flow channel unit 16, after testing and verification, at least one column, or one row, or one row and one column of gas-liquid flow channel units 16 as the outer zone flow channel 13 can achieve the effect of improving the heat dissipation capacity.

[0046] In a specific embodiment, the shape of the gas-liquid flow channel unit 16 includes:

[0047] Ring;

[0048] and / or, an elliptical ring;

[0049] and / or, a polygonal ring formed by a plurality of straight edges, such as a triangular ring, a quadrilateral ring, a pentagonal ring, or a hexagonal ring;

[0050] and / or, a ring formed by enclosing a plurality of arc edges can produce a variety of shaped special-shaped rings;

[0051] And / or, a ring formed by a plurality of straight edges and a plurality of arc edges may generate a plurality of shaped special-shaped rings. The above shapes may be arranged singly or in combination.

[0052] In a specific embodiment, when the shape of the gas-liquid circulation channel is a ring formed by a plurality of straight edges and a plurality of arc edges, it can be specifically set to be in the form of a Tesla valve channel, which has the advantages of increasing the fluid flow rate and enhancing the heat dissipation effect.

[0053] Based on the above-mentioned heat dissipation fins 1, the embodiment of the present application also provides a radiator, which includes the above-mentioned heat dissipation fins 1 and a plate body 2; the plate body 2 is provided with a slot-type socket, and a cavity is provided inside; the heat dissipation fins 1 are provided with a plurality of them and are all plugged into the sockets of the plate body 2, so that the flow channel openings 12 are all connected to the plate body 2, so that each gas-liquid circulation channel is connected to the cavity. Since the radiator has the above-mentioned heat dissipation fins 1, the beneficial effects of the heat dissipation fins 1 on the radiator can be found in the above content, and will not be repeated here.

[0054] In a preferred embodiment, the end where the flow channel opening 12 of the heat sink 1 is located is the first end, and the end away from the plate body 2 is the second end; in the vertical working state of the radiator, the flow channel in the gas-liquid circulation channel away from the top side of the heat sink 1 is the bottom flow channel, and the height of the bottom flow channel close to the second end is higher than the height close to the first end. It should be noted that the vertical working state of the radiator is attached to the side wall of the device to be cooled, the plate body 2 is upright, and the flow channel opening 12 of the heat sink 1 is on the vertical side, such as Figure 1 shown.

[0055] With such arrangement, when the heat dissipating fin 1 is in the position state where the flow channel opening 12 is on the vertical side, the gas-liquid circulation flow channel presents a shape with a gradually increasing height from the flow channel opening 12 to the opposite side, which is conducive to the downward gathering of the liquid phase change medium and gravity reflux, thereby optimizing the heat dissipation effect.

[0056] Furthermore, each heat dissipating fin 1 is provided with a plurality of mutually independent flow channel openings 12 and a plurality of mutually independent gas-liquid circulation channels, and an isolation portion is provided between adjacent gas-liquid circulation channels on the same heat dissipating fin 1, the width of the isolation portion is uniform, and when the radiator is in a working state, the height of the isolation portion close to the second end is higher than the height close to the first end.

[0057] With this arrangement, a single radiator can form multiple heat dissipation circulation systems, so that a single radiator can be used to cool and dissipate heat for multiple nearby heating elements, providing more possibilities for the application of radiators in equipment with limited installation space, while also reducing the number of radiators and controlling costs.

[0058] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0059] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0060] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0061] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0062] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0063] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A heat dissipation fin, characterized in that: It comprises a fin body (11), a gas-liquid circulation flow channel arranged in the fin body (11), and a flow channel opening (12) arranged on the fin body (11); The gas-liquid circulation channel diffuses and extends from the channel opening (12) along the extension surface of the fin body (11) and is used for circulating the phase-changing working medium; The gas-liquid circulation channel at least comprises an outer zone flow channel (13) and an inner zone flow channel (14); the outer zone flow channel (13) is closer to the edge of the fin body (11) and farther away from the flow channel opening (12) relative to the inner zone flow channel (14); and the flow width of the outer zone flow channel (13) is greater than the flow width of the inner zone flow channel (14).

2. The heat dissipation fin according to claim 1, characterized in that: The portion of the gas-liquid circulation channel that is connected to the channel opening (12) is a converging channel (15), and the flow width of the converging channel (15) is greater than the flow width of the outer zone channel (13).

3. The heat dissipation fin according to claim 1, characterized in that: The gas-liquid circulation channel comprises a plurality of gas-liquid flow channel units (16) distributed in an array and / or staggered manner, and adjacent gas-liquid flow channel units (16) have a common part to form the gas-liquid circulation channel.

4. The heat dissipation fin according to claim 3, characterized in that: The gas-liquid circulation channel is in a honeycomb shape.

5. The heat dissipation fin according to claim 4, characterized in that: The flow width at the intersection of any three adjacent gas-liquid flow channel units (16) is greater than the flow width at other positions of the gas-liquid flow channel units (16).

6. The heat dissipation fin according to claim 3, characterized in that: The outer zone flow channel (13) comprises at least one column and / or one row of the gas-liquid flow channel units (16) adjacent to the edge of the fin body (11).

7. The heat dissipation fin according to claim 3, characterized in that: The shape of the gas-liquid flow channel unit (16) includes: Ring; and / or, an elliptical ring; and / or, polygonal rings; and / or, a ring formed by a plurality of arc edges; And / or, a ring formed by a plurality of straight edges and a plurality of arc edges.

8. A radiator, characterized in that: It comprises a plate body (2) and a heat dissipation fin (1) according to any one of claims 1 to 7; The plate body (2) is provided with a cavity; The heat dissipation fins (1) are provided in plurality and the flow channel openings (12) are all connected to the plate body (2), so that each of the gas-liquid circulation channels is in communication with the cavity.

9. The heat sink according to claim 8, characterized in that: The end of the heat dissipation fin (1) where the flow channel opening (12) is located is the first end, and the end away from the plate body (2) is the second end; When the radiator is in a vertical working state, the flow channel in the gas-liquid circulation flow channel away from the top side of the heat dissipation fin (1) is the bottom flow channel, and the height of the bottom flow channel close to the second end is higher than the height close to the first end.

10. The heat sink according to claim 9, characterized in that Each of the heat dissipation fins (1) is provided with a plurality of mutually independent flow channel openings (12) and a plurality of mutually independent gas-liquid circulation channels, and adjacent gas-liquid circulation channels on the same heat dissipation fin (1) are provided with a partition portion, the width of the partition portion is uniform, and when the radiator is in a working state, the height of the partition portion close to the second end is higher than the height close to the first end.

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