CN213983486U

CN213983486U - Radiator assembled in limiting interference fit manner and press-fitting structure thereof

Info

Publication number: CN213983486U
Application number: CN202022891760.XU
Authority: CN
Inventors: 丁强; 吕志刚; 崔余; 陈磊; 刘鹏; 黄耀伟; 尤传烨; 汪洋
Original assignee: Changchun Cedar Electronics Technology Co Ltd
Current assignee: Changchun Cedar Electronics Technology Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-08-17
Anticipated expiration: 2030-12-03

Abstract

The utility model relates to a radiator assembled by spacing interference fit and a press-fitting structure thereof, wherein the radiator comprises a radiator main body and a phase-change radiating inner container; the radiator main body is a metal radiator with fins; the phase change heat dissipation inner container is embedded in the middle round hole of the radiator main body and is in interference fit with the radiator main body. The utility model discloses passing through interference fit's mode pressfitting with a phase transition heat dissipation inner bag and radiator main part and assembling together, the leakproofness test can be done to phase transition heat dissipation inner bag before the radiator main part is impressed, if the phase transition heat dissipation inner bag gas leakage condition appears, then condemned only phase transition heat dissipation inner bag, need not scrap whole radiator, then will test qualified phase transition heat dissipation inner bag again impress the radiator main part can, improved the yield of this type of radiator production, reduced manufacturing cost.

Description

Radiator assembled in limiting interference fit manner and press-fitting structure thereof

Technical Field

The utility model belongs to the technical field of the radiator, a spacing interference fit assembly radiator and pressure equipment structure thereof is related to.

Background

In the field of lighting, electronic components can generate a large amount of heat during working, for example, an LED lamp is taken as an example, about 80% of electric energy of a high-power LED lamp is converted into heat during working, if the heat cannot be timely released into the environment by adopting effective measures, junction temperature of a lamp chip can be increased, luminous efficiency is reduced, service life is shortened, and the chip can be seriously burnt. Therefore, heat dissipation is a key problem that must be solved by a high-power LED lamp, and the current excellent heat dissipation method of the LED lamp is phase-change cooling.

The microgroove group in the phase-change cooling dissipates heat, adopts a phase-change cooling mode, the heat-taking heat flux density of the microgroove group can meet the requirements of an LED chip, heat can be uniformly distributed in the whole radiator, the heat resistance of the whole radiator is reduced, and compared with heat dissipation effects of air cooling and natural air convection heat dissipation, the microgroove group in the phase-change cooling is superior to those of air cooling and natural air convection heat dissipation. However, in this way, the working medium is sealed in a sealed cavity inside the radiator, the processing and manufacturing process is complicated, and once the working medium leaks, the whole radiator fails.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a radiator of spacing interference fit assembly and pressure equipment structure thereof, the working medium is revealed and can not be caused the inefficacy of whole radiator, can improve the yield, reduces manufacturing cost.

In order to solve the technical problem, the radiator assembled by limiting interference fit of the utility model comprises a radiator main body, wherein the radiator main body is a metal radiator with fins; it is characterized by also comprising a phase-change heat dissipation inner container; the phase change heat dissipation inner container is embedded in the middle round hole of the radiator main body and is in interference fit with the radiator main body.

The included angle formed by the outer surface of the side wall of the inner container of the phase-change heat dissipation inner container and the bottom surface is x, and x is more than 85 degrees and less than 90 degrees.

And a positioning hole is processed at the bottom of the phase-change heat dissipation inner container.

The outer surface of the side wall of the phase-change heat dissipation liner is processed with a tangent plane; the bottom of the phase-change heat dissipation liner is provided with a wire passing hole, the bottom end of the wire passing hole is opened on the bottom surface of the phase-change heat dissipation liner, the top end of the wire passing hole is opened on the lower part of the tangent plane, and the part of the wire passing hole, which is vertical to the bottom surface of the phase-change heat dissipation liner, is a positioning hole.

The press-fitting structure of the radiator assembled in the limiting interference fit manner comprises a press block, a supporting platform, a sleeve and a guide rod; the supporting platform comprises a top plate, a bottom plate and four supporting columns for connecting the top plate and the bottom plate; the sleeve is fixed between the top plate and the bottom plate; the guide rod is partially embedded in the sleeve, and a spring is arranged between the lower part of the guide rod and the sleeve.

The utility model discloses pass through interference fit's mode with the radiator main part of a phase transition heat dissipation inner bag and an extrusion moulding technology preparation, the pressfitting is assembled together. Because the radiator main body is made of metal and has good ductility, the inner wall of the middle round hole of the radiator main body slightly expands outwards due to interference fit, and the phase-change heat dissipation liner is tightly held and closely attached to the phase-change heat dissipation liner; and through the cooperation of locating hole and guide bar, the phase transition heat dissipation inner bag can not appear with radiator main part complex angular deviation.

Compared with the prior art, the utility model has the following advantages;

1. before the phase change heat dissipation inner bag is pressed into the radiator main body, the tightness test can be carried out, if the air leakage condition of the phase change heat dissipation inner bag occurs, only the phase change heat dissipation inner bag is scrapped, the whole radiator does not need to be scrapped, and then the phase change heat dissipation inner bag qualified in the test is pressed into the radiator main body, so that the yield of the production of the radiator is improved, and the manufacturing cost is reduced.

2. The phase change heat dissipation inner container is fixed with the matching angle of the radiator through the positioning hole, and the phase change heat dissipation inner container cannot rotate in the pressing process, so that the matching angle deviation is caused, and the assembly of other parts is influenced.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a sectional view of a phase change heat dissipation liner.

Fig. 3 is an exploded view of the press-fitting structure of the present invention.

Fig. 4 is a state diagram of the press-fitting structure of the present invention after press-fitting.

In the figure: 11. a heat sink body; 111. a middle circular hole; 12. a phase change heat dissipation liner; 121. a side wall of the inner container; 122. an inner container upper cover; 123. positioning holes; 124. a wire passing hole; 125. cutting into noodles; 21. briquetting; 22. a support platform; 221. a top plate; 222. a base plate; 223. a support pillar; 23. a sleeve; a guide rod 24.

Detailed Description

The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 and 2, the heat sink assembled by the limiting interference fit of the present invention comprises a heat sink main body 11 and a phase change heat dissipation liner 12; the radiator main body 11 is a metal radiator with fins; the phase-change heat dissipation inner container 12 is a metal sealed cavity capable of performing phase-change heat dissipation, and one end with a small diameter is slightly smaller than the middle round hole 111 of the heat sink main body 11, and the other end is slightly larger than the middle round hole 111 of the heat sink main body 11; the phase change heat dissipation inner container 12 is embedded in the middle round hole 111 of the heat radiator main body 11, and the two are in interference fit; the included angle formed by the outer surface of the liner side wall 121 of the phase-change heat-dissipation liner 12 and the bottom is x, and x is more than 85 degrees and less than 90 degrees; a positioning hole 123 is processed at the bottom of the phase-change heat-dissipation inner container 12; a tangent plane 125 is processed on the outer surface of the side wall 12 of the inner container; a wire passing hole 124 is formed at the bottom of the phase change heat dissipation inner container 12, the bottom end of the wire passing hole 124 is opened at the bottom surface of the phase change heat dissipation inner container 12, the top end of the wire passing hole 124 is opened at the lower part of the tangent plane 125, and a positioning hole 123 is formed in the portion of the wire passing hole 124 perpendicular to the bottom surface of the phase change heat dissipation inner container 12.

As shown in fig. 3 and 4, the press-fitting structure includes a press block 21, a supporting platform 22, a sleeve 23, and a guide rod 24; the supporting platform 22 comprises a top plate 221, a bottom plate 222 and four supporting columns 223; the top plate 221 and the bottom plate 222 are fixedly connected through supporting columns 223 at four corners; the sleeve 23 is fixed between the top plate 221 and the bottom plate 222; the guide bar 24 is partially embedded in the sleeve 23, and a spring is installed between the lower portion of the guide bar 24 and the sleeve 23.

When the radiator is assembled, the radiator main body 11 is placed on the top plate 221 of the supporting platform 22, the end with the small diameter of the phase change radiating liner 12 is placed in the middle round hole 111 of the radiator main body 11, the positioning hole 123 at the bottom of the phase change radiating liner 12 is inserted into the head of the guide rod 24, then the phase change radiating liner 12 is slowly pressed into the middle round hole 111 of the radiator main body 11 by the pressing block 21, because metal has good ductility, in the pressing process, the inner wall of the middle round hole 111 of the radiator main body 11 slightly expands outwards and tightly holds the phase change radiating liner 12 until the phase change radiating liner 12 is completely pressed into the radiator main body 11, and at the moment, the guide rod 24 contracts inwards towards the sleeve 23; after the heat sink is removed, the guide rod 24 is returned to its original position by the action of the spring.

Claims

1. A radiator assembled in a limiting interference fit mode comprises a radiator main body (11), wherein the radiator main body (11) is a metal radiator with fins; it is characterized by also comprising a phase-change heat dissipation inner container (12); the phase change heat dissipation inner container (12) is embedded in a middle round hole (111) of the heat radiator main body (11) and is in interference fit with the heat radiator main body.

2. The heat sink with the limiting interference fit assembly according to claim 1, wherein an included angle formed by the outer surface of the inner container side wall (121) of the phase-change heat dissipation inner container (12) and the bottom surface is x, and x is more than 85 degrees and less than 90 degrees.

3. The heat sink with limiting interference fit assembly according to claim 1, wherein the bottom of the phase-change heat dissipation liner (12) is processed with a positioning hole (123).

4. The heat sink with a limited interference fit assembly as claimed in claim 3, wherein the outer surface of the inner container sidewall (121) is machined with a tangential surface (125); the bottom of the phase-change heat dissipation inner container (12) is provided with a wire passing hole (124), the bottom end of the wire passing hole (124) is opened at the bottom surface of the phase-change heat dissipation inner container (12), the top end of the wire passing hole (124) is opened at the lower part of the tangent plane (125), and the part of the wire passing hole (124) vertical to the bottom surface of the phase-change heat dissipation inner container (12) is provided with a positioning hole (123).

5. A press-fitting structure of a radiator assembled by the limit interference fit as claimed in claim 1, characterized by comprising a pressing block (21), a supporting platform (22), a sleeve (23), a guide rod (24); the supporting platform (22) comprises a top plate (221), a bottom plate (222) and four supporting columns (223) for connecting the top plate (221) and the bottom plate (222); the sleeve (23) is fixed between the top plate (221) and the bottom plate (222); the guide rod (24) is partially embedded in the sleeve (23), and a spring is arranged between the lower part of the guide rod (24) and the sleeve (23).