CN219037724U

CN219037724U - Radiator

Info

Publication number: CN219037724U
Application number: CN202222937081.0U
Authority: CN
Inventors: 符猛; 谢锦荣; 罗富升
Original assignee: Champ Tech Optical Foshan Corp
Current assignee: Champ Tech Optical Foshan Corp
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-05-16
Anticipated expiration: 2032-11-04

Abstract

The application provides a radiator, which comprises a lower plate and a condensing plate, wherein the lower plate comprises a bottom plate and a coaming, the bottom plate is used for being in contact with a heating source, a cavity is formed by the coaming and the bottom plate, and the inner side surface of the coaming is a slope; the condensing plate comprises a plate body and a radiating fin group, wherein the plate body comprises a first surface and a second surface which are opposite to each other, the radiating fin group is arranged on the first surface, and the plate body and the radiating fin group are integrally formed; the plate body is connected to the coaming and covers the cavity to form a heat dissipation cavity, and the second surface is opposite to the lower plate. The heat exchange efficiency of the condensing plate and the area of the condensing surface are effectively increased by utilizing the integrated forming of the radiating fin group and the condensing plate and the slope surface of the inner side surface of the coaming, so that the radiating effect is improved.

Description

Radiator

Technical Field

The application relates to the technical field of heat dissipation, in particular to a radiator.

Background

The heat sink is a device for dissipating heat from a heat generating source.

The heat dissipation effect of the radiator in the prior art still has a certain defect.

Disclosure of Invention

In order to solve the above problems, the present application provides a heat sink.

The embodiment of the application provides a radiator, which comprises a lower plate and a condensing plate, wherein the lower plate comprises a bottom plate and a coaming, the bottom plate is used for being in contact with a heating source, a cavity is formed by the coaming and the bottom plate in a surrounding mode, and the inner side surface of the coaming is a slope surface; the condensing plate comprises a plate body and a radiating fin group, wherein the plate body comprises a first surface and a second surface which are opposite to each other, the radiating fin group is arranged on the first surface, and the plate body and the radiating fin group are integrally formed; the plate body is connected to the coaming and covers the cavity to form a heat dissipation cavity, and the second surface is opposite to the lower plate.

In one embodiment, the shroud and the base plate form an angle a of 122 ° ± 3 °.

In an embodiment, the radiator further comprises a tail pipe, the tail pipe is arranged on the coaming, and the tail pipe is communicated with the inside and the outside of the radiating cavity.

In one embodiment, the plate body is friction welded or lead welded to the shroud.

In an embodiment, the heat sink further comprises an upper cover plate, the upper cover plate is provided with a cooling cavity, the cooling cavity is covered by the condensing plate, and the heat radiating fin group extends into the cooling cavity.

In one embodiment, the upper cover plate is provided with a partition plate for dividing the cooling cavity into a first chamber and a second chamber; the radiating fin group comprises a first fin group and a second fin group, and a space is arranged between the first fin group and the second fin group; the first fin group stretches into the first cavity, the second fin group stretches into the second cavity, and the partition plate stretches into the space.

In one embodiment, the partition is provided with a passage for communicating the first chamber with the second chamber.

In an embodiment, the upper cover plate includes a first side wall and a second side wall opposite to each other, and the length of the partition is smaller than the distance between the first side wall and the second side wall, so that one end of the partition is connected to the first side wall, and the other end of the partition forms the channel with the second side wall.

In an embodiment, the first side wall is provided with an inlet and an outlet, the inlet is communicated with the inside and the outside of the first chamber, the outlet is communicated with the inside and the outside of the second chamber, and the inlet, the first chamber, the channel, the second chamber and the outlet are sequentially communicated to form a cooling flow channel.

In an embodiment, the upper cover plate is provided with an annular step formed by recessing, the annular step is arranged around the cooling cavity, and the condensing plate is matched with the annular step.

Compared with the prior art, the radiator of this application utilizes fin group and condensation plate integrated into one piece and coaming's inboard personally submits domatic, has increased the area of the heat exchange efficiency and the condensation face of condensation plate effectively to the cooling efficiency of condensation plate has been improved, and then the radiating effect has been promoted.

Drawings

Fig. 1 is a three-dimensional view of a heat sink according to an embodiment of the present application.

Fig. 2 is an expanded view of fig. 1.

Fig. 3 is a cross-sectional view of fig. 1.

Fig. 4 is a three-dimensional view of a condensing plate in a radiator according to an embodiment of the present application.

Fig. 5 is a three-dimensional view of the other view of fig. 4.

Fig. 6 is a three-dimensional view of a lower plate in a heat sink according to an embodiment of the present application.

Fig. 7 is a three-dimensional view of an upper cover plate in a heat sink according to an embodiment of the present application.

Description of the main reference signs

The following detailed description will further illustrate the application in conjunction with the above-described figures.

Detailed Description

The following description will refer to the accompanying drawings in order to more fully describe the present application. Exemplary embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. Like reference numerals designate identical or similar components.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the 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. Furthermore, as used herein, "comprises" and/or "comprising" and/or "having," integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, and/or groups thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Furthermore, unless the context clearly defines otherwise, terms such as those defined in a general dictionary should be construed to have meanings consistent with their meanings in the relevant art and the present application, and should not be construed as idealized or overly formal meanings.

The following description of exemplary embodiments will be provided with reference to the accompanying drawings. It is noted that the components depicted in the referenced figures are not necessarily shown to scale; and the same or similar components will be given the same or similar reference numerals or similar technical terms.

The following detailed description of specific embodiments of the present application refers to the accompanying drawings.

Fig. 1-6 illustrate a heat sink 100 in an embodiment of the present application.

Referring to fig. 1 to 6, an embodiment of the present application provides a heat sink 100 including a condensation plate 10a and a lower plate 10b. The lower plate 10b includes a bottom plate 12a and a surrounding plate 12b, the bottom plate 12a is used for contacting with a heating source, the surrounding plate 12b is obliquely connected with the bottom plate 12a and surrounds a cavity Q1, and the inner side surface of the surrounding plate 12b presents a slope. The condensing plate 10a comprises a plate body 11 and a radiating fin group 13, wherein the plate body 11 comprises a first surface 11a and a second surface 11b which are opposite, the radiating fin group 13 is arranged on the first surface 11a, and the plate body 11 and the radiating fin group 13 are integrally formed; the plate 11 is connected to the shroud 12b and covers the cavity Q1 to form a heat dissipation cavity Q2, and the second surface 11b is opposite to the lower plate 10b. The inner side surface of the coaming 12b is the inner side wall of the cavity Q1.

As shown in fig. 5 and 6, the radiator 100 of the present embodiment is formed by integrally forming the fin group 13 and the condensation plate 10a, so that the condensation plate 10a and the fin group 13 can directly exchange heat, thereby effectively increasing the heat exchange efficiency of the condensation plate 10a and effectively improving the cooling efficiency of the condensation plate 10 a; the inner side surface of the coaming 12b is designed to be a slope surface, so that the area of a condensation surface (the condensation surface is a surface where a vapor phase change medium contacts with the condensation plate 10 a; in the embodiment, the condensation surface is the second surface 11 b) and the volume of the heat dissipation cavity Q2 are effectively increased, and more heat can be absorbed, so that the heat dissipation effect of the heat sink 100 is improved.

In this embodiment, referring to fig. 3 and 6, the included angle a formed by the enclosing plate 12b and the bottom plate 12a is 122 ° ± 3 °; specifically, the coaming 12b and the bottom plate 12a are integrally formed in the direction of punching. The experiment proves that: the included angle A is in the range, and under the condition that the area of the condensation surface is effectively increased, the strength of the heat dissipation cavity Q2 meets the air pressure in the heat dissipation cavity Q2 after condensation of the condensation surface, so that the quality of the radiator 100 is improved, and meanwhile, the stamping is facilitated; when the angle of the included angle A is smaller than the range, the volume of the heat dissipation cavity Q2 and the area of the condensation surface are both increased compared with the angle of the included angle A, but the strength of the heat dissipation cavity Q2 is insufficient to meet the air pressure in the heat dissipation cavity Q2 after condensation of the condensation surface, so that the heat dissipation cavity Q2 is damaged; when the angle of the included angle a is larger than the above range, the volume of the heat dissipating cavity Q2 and the area of the condensation surface are both reduced from the angle of the included angle a within the above range, and therefore, the heat dissipating efficiency is lower than that of the heat dissipating device 100 having the angle of the included angle a within the above range. Preferably, the angle of included angle a is 122 °.

In some embodiments, referring to fig. 2 and 6, and referring to fig. 3, the radiator 100 further includes a tail pipe 16, where the tail pipe 16 is disposed on the shroud 12b, and the tail pipe 16 communicates with the inside and outside of the heat dissipation chamber Q2. The phase change medium (the phase change medium has the characteristics of liquid state heat absorption and vaporization, and vapor state condensation into liquid state, such as purified water) can be injected into the heat dissipation cavity Q2 through the tail pipe 16, and the air in the heat dissipation cavity Q2 can be pumped out through the tail pipe 16, so that the heat dissipation cavity Q2 forms a vacuum cavity, and heat dissipation is facilitated.

In this embodiment, alternatively, the plate body 11 is friction welded or lead welded to the lower plate 10b, so that the heat sink 100 forms a closed heat dissipation chamber Q2.

In some embodiments, please refer to fig. 2 and 7 in combination with fig. 1, the heat sink 100 further includes an upper cover 20, the upper cover 20 is provided with a cooling cavity 21, the condensation plate 10a covers the cooling cavity 21, and the fin group 13 extends into the cooling cavity 21. By providing the cooling cavity 21, the cooling liquid can be injected into the cooling cavity 21 so that the cooling liquid is in contact with the cooling fin set 13, thereby enabling the cooling fin set 13 to perform heat exchange with the cooling liquid and further improving the heat dissipation effect of the radiator 100.

In some embodiments, referring to fig. 4 and 7, in combination with fig. 3, the upper cover plate 20 is provided with a partition 22 for dividing the cooling cavity 21 into a first chamber 21a and a second chamber 21b. The radiating fin group 13 comprises a first fin group 13a and a second fin group 13b, and a space K1 is arranged between the first fin group 13a and the second fin group 13 b; the first fin group 13a and the second fin group 13b are each composed of a plurality of fins 131 arranged at intervals. The condensing plate 10a covers the cooling cavity 21, the first fin set 13a extends into the first cavity 21a, the second fin set 13b extends into the second cavity 21b, and the partition 22 extends into the space K1. The cooling cavity 21 is divided into a plurality of cavities by the partition plates 22, so that the cooling cavity 21 is effectively prevented from being too wide, and cooling liquid cannot flow to the fins 131 on two sides, and the heat dissipation efficiency is affected; meanwhile, each fin piece in the radiating fin group 13 can respectively extend into the corresponding cavity, so that the heat exchange speed can be improved, and the radiating speed is improved.

Further, as shown in fig. 7, the partition 22 is provided with a channel T1 for communicating the first chamber 21a and the second chamber 21b, so that the cooling liquid can circulate in the first chamber 21a and the second chamber 21b, thereby accelerating the cooling speed of the cooling liquid in the two chambers and further improving the heat dissipation efficiency.

In other embodiments, the partition 22 is provided with a plurality of channels T1, and the plurality of channels T1 are spaced apart and arranged side by side along the length direction of the partition 22, or the plurality of channels T1 are arranged in any other way, such as a plum blossom shape, a trapezoid shape.

In some embodiments, referring to fig. 7, the upper cover 20 includes a first side wall 20a and a second side wall 20b opposite to each other, and the length of the partition 22 is smaller than the distance between the first side wall 20a and the second side wall 20b, so that one end of the partition 22 is connected to the first side wall 20a, and a channel T1 is formed between the other end and the second side wall 20 b. Through the channel T1 of the above design, the cooling liquid can smoothly flow to the fins 131 at both sides, so that each fin 131 can be contacted with the cooling liquid, thereby improving the heat dissipation effect.

In other embodiments, when the number of the chambers provided in the cooling chambers 21 is more than two, a channel T1 is provided between two adjacent cooling chambers 21; in order to smoothly circulate the coolant in each cooling chamber 21, the plurality of channels T1 are distributed in a staggered manner so that the flow direction of the coolant is S-shaped.

In some embodiments, referring to fig. 1 and 7, the first side wall 20a is provided with an inlet 23a and an outlet 23b, the inlet 23a is communicated with the inside and the outside of the first chamber 21a, the outlet 23b is communicated with the inside and the outside of the second chamber 21b, and the inlet 23a, the first chamber 21a, the channel T1, the second chamber 21b and the outlet 23b are sequentially communicated to form a cooling flow channel, so that the cooling liquid in the first chamber 21a and the second chamber 21b can interact with the external cooling liquid, thereby improving the cooling effect of the first chamber 21a and the second chamber 21b, and further improving the heat dissipation effect of the heat sink 100. In the present embodiment, the upper cover plate 20 and the condensation plate 10a are covered, and the direction of the interval arrangement of the plurality of fins 131 in the fin group 13 is perpendicular to the flowing direction of the cooling liquid, so that the cooling liquid can flow in the gaps between two adjacent fins 131 rapidly, thereby improving the cooling effect.

In some embodiments, referring to fig. 1 and 7, the upper cover 20 is provided with an annular step 24 formed by recessing, the annular step 24 is disposed around the cooling cavity 21, and the condensation plate is fitted to the annular step 24. Specifically, the depth of the annular step 24 is the same as the thickness of the condensation plate 10a, thereby making the overall structure of the radiator 100 beautiful and compact; at the same time, the provision of the annular step 24 allows the condensation plate 10a to better seal the cooling chamber 21.

The working principle of the radiator 100 of the present application is as follows: the bottom plate 12a absorbs heat of the heating source and conducts the heat to the liquid phase change medium in the heat dissipation cavity Q2; after being heated, the liquid phase-change medium is vaporized into vapor to be diffused in the whole heat dissipation cavity Q2 and rises to the condensation plate 10a to perform heat exchange with the condensation plate 10a, so that the vapor phase-change medium is condensed into liquid; the capillary phenomenon formed by the capillary structures on the condensation plate 10a and the coaming plate 12b returns the liquid phase change medium to the bottom plate 12a. The condensing plate 10a conducts heat to the cooling fin set 13, and the cooling fin set 13 exchanges heat with the cooling liquid in the cooling cavity 21 to cool the cooling fin set 13, so that the condensing plate is cooled. The circulation is repeated in this way, and the efficient heat dissipation efficiency of the heat sink 100 is achieved.

The radiator 100 of the present embodiment may further include a plurality of support columns (not shown) installed between the condensation plate 10a and the lower plate 10b as required, so as to reduce the possibility of deformation of the radiator 100 caused by the air pressure change in the heat dissipation chamber Q2.

Hereinabove, the specific embodiments of the present application are described with reference to the accompanying drawings. However, those of ordinary skill in the art will appreciate that various modifications and substitutions can be made to the specific embodiments of the present application without departing from the scope thereof. Such modifications and substitutions are intended to be within the scope of the present application.

Claims

1. A heat sink, comprising:

the lower plate comprises a bottom plate and a coaming, wherein the bottom plate is used for being in contact with a heating source, a cavity is formed by the coaming and the bottom plate in a surrounding mode, and the inner side surface of the coaming presents a slope;

the condensing plate comprises a plate body and a radiating fin group, wherein the plate body comprises a first surface and a second surface which are opposite to each other, the radiating fin group is arranged on the first surface, and the plate body and the radiating fin group are integrally formed; the plate body is connected to the coaming and covers the cavity to form a heat dissipation cavity, and the second surface is opposite to the lower plate.

2. The heat sink of claim 1, wherein,

and an included angle A formed by the coaming and the bottom plate is 122 degrees+/-3 degrees.

3. The heat sink of claim 2 further comprising a tailpipe disposed at the shroud and communicating between the interior and exterior of the heat dissipation chamber.

4. The heat sink of claim 1 wherein the plate is friction welded or lead welded to the shroud.

5. The heat sink of claim 1, wherein,

the radiator also comprises an upper cover plate, the upper cover plate is provided with a cooling cavity, the cooling cavity is covered by the condensing plate, and the radiating fin group stretches into the cooling cavity.

6. The heat sink of claim 5 wherein,

the upper cover plate is provided with a partition plate for dividing the cooling cavity into a first cavity and a second cavity;

the radiating fin group comprises a first fin group and a second fin group, and a space is arranged between the first fin group and the second fin group;

the first fin group stretches into the first cavity, the second fin group stretches into the second cavity, and the partition plate stretches into the space.

7. The heat sink of claim 6, wherein the partition is provided with a passage for communicating the first chamber with the second chamber.

8. The heat sink of claim 7 wherein,

the upper cover plate comprises a first side wall and a second side wall which are opposite, the length of the partition plate is smaller than the distance between the first side wall and the second side wall, so that one end of the partition plate is connected with the first side wall, and the other end of the partition plate and the second side wall form the channel.

9. The heat sink of claim 8 wherein,

the first side wall is provided with an inlet and an outlet, the inlet is communicated with the inside and the outside of the first chamber, the outlet is communicated with the inside and the outside of the second chamber, and the inlet, the first chamber, the channel, the second chamber and the outlet are sequentially communicated to form a cooling flow channel.

10. The heat sink according to any one of claims 5 to 9, wherein the upper cover plate is provided with an annular step formed by a recess, the annular step is provided around the cooling chamber, and the condensing plate is fitted to the annular step.