CN217217277U - Temperature-equalizing fin - Google Patents

Abstract

The utility model relates to a samming fin: two frid that are provided with rectangular groove coincide according to rectangular groove crossing direction, press from both sides the frid between two panels again, the samming fin of making with the plane brazing has the advantage that thickness is little, simple structure, manufacturing are simple and convenient and with low costs, and the rectangular inslot that communicates in series holds working medium many, working medium can be in rectangular inslot multidirectional flow, have excellent samming performance in addition.

Description

Temperature-equalizing fin

Technical Field

The utility model relates to a technique in the field of heat dissipation of electronic devices, concretely relates to samming fin.

Background

In the locomotive industry, new energy fields, communication industry, big data industry or other systems or devices, the heat inside the device is increased due to the cost requirement or the efficiency improvement, and therefore a heat dissipation unit is needed to assist in heat dissipation. Most practitioners choose fin radiators, heat pipes, temperature-equalizing plates and other radiator elements for heat dissipation, and when the heat dissipation power is further increased, the heat dissipation fan is further increased for forced heat dissipation. Among them, the efficiency and temperature uniformity of the fins are one of the most important factors affecting the thermal performance of the heat sink.

At present, the blowing plate is used for replacing the traditional radiating fin to improve the temperature uniformity of the fin from a near heat source to a far heat source, so that the efficiency of the fin is improved, but the blowing plate on the market has the following defects:

1. after the conventional fins are replaced by the blowing plate fins, the heat conducting performance of the blowing plate fins is obviously anisotropic. Only when the heat source is installed below the fins, the heat conducting performance of the blowing plate fins is superior to that of the common fins.

2. In the manufacturing process of the blown sheet fin, graphite powder needs to be brushed, so that impurities exist in the flow channel and cannot be removed. When the flow passage is vacuumized, impurities may be pumped out together and adsorbed into the vacuum device, so that the service life of the vacuum pump is shortened; in addition, impurities at the exhaust port can influence the sealing of the exhaust port, and the product percent of pass is reduced.

3. The blown plate fin also exists: long flow channel, large flow resistance, large thickness and high cost.

Through patent retrieval, with the utility model discloses there is following patent mainly to have the patent of certain relation:

1. the present invention relates to a laminated heat exchanger and a method for manufacturing the same, and more particularly, to a chinese patent having an application number of "CN 93116791.4", an application date of "1993.08.26", a publication number of "CN 1072352C", a publication date of "2001.10.03", a name of "laminated heat exchanger and a method for manufacturing the same", and an application person of "mitsubishi heavy industry co. The flow paths 54, 55 in the chambers 48, 49 of the flat tube 41 are divided into a plurality of sections by the corrugated inner fins 52, 53, and the U-shaped flow path 56 is divided into a plurality of sections at the U-turn 50, so that the refrigerant flows more smoothly, the flow path area is increased, and stagnation of the refrigerant at the U-turn 50 is eliminated. The separation of the gas-liquid two-phase flow refrigerant by the centrifugal force is caused only in the U-shaped flow path 56, the distribution of the gas-liquid distribution amount is reduced, the reliability of the flat tubes 41 is improved, and the refrigerant leakage is prevented.

2. The plate type loop thermosiphon temperature equalizing plate comprises a ring groove arranged in a plate body, wherein the ring groove comprises: the left and right main channels and the upper and lower bent channels connecting the left and right main channels; and a communicating channel which is obliquely arranged is connected between the left main channel and the right main channel. The invention can reduce the size of the heat pipe and match with the electronic device; the heat exchange efficiency of the electronic device is improved by reducing the contact thermal resistance and enhancing the two-phase flow in the heat pipe while the miniaturization is realized.

3. The invention provides a blowing plate structure and a manufacturing method thereof, wherein the blowing plate structure comprises a heat dissipation piece, at least one inlet and at least one outlet, the heat dissipation piece is formed by correspondingly covering a first plate body and a second plate body, the first plate body and the second plate body jointly define a flow channel, working fluid is filled in the flow channel, and the inlet and the outlet are correspondingly formed at two ends of the heat dissipation piece and are communicated with the flow channel.

4. The invention discloses a Chinese patent with the application number of 'CN202111145037. X', the application date of '2021.09.28', the publication number of 'CN 113873844A', the publication date of '2021.12.31', the name of 'an integrated liquid-cooled temperature-uniforming plate' and the application name of 'Chengyong, Wangjiaxi', and provides an integrated liquid-cooled temperature-uniforming plate, in particular an integrated aluminum liquid-cooled temperature-uniforming plate integrally formed by vacuum brazing. The invention solves the problems of poor temperature uniformity and incapability of meeting the heat dissipation requirement of the existing liquid cooling plate, and eliminates the thermal contact resistance between the liquid cooling plate and the temperature uniformity plate.

In the above patents, tubular flow channels are formed in the fins, and the working medium is stored in the flow channels and flows in the flow channels and undergoes phase change to dissipate heat. And because the flow channel has limited capacity, less working medium is stored. And the flow channel is long, which causes large flow resistance, large temperature difference at different positions, unsatisfactory temperature equalization performance, and the problems of complex structure, large thickness and high production cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to the defect that exists among the prior art, provide a samming fin.

In order to solve the technical problem, the utility model discloses the technical scheme who takes does: a temperature equalization fin, comprising: a panel and a slot plate. The frid is the plat form, is provided with the logical groove that runs through the frid on the frid, and the frid presss from both sides between two panels and with two panel sealing connection, packs working medium in leading to the inslot. The temperature-equalizing fin formed by overlapping the face plate and the groove plate comprises: the thickness is little, simple structure, make advantage simple and convenient and with low costs, and it is many to lead to the working medium that the groove held in addition, working medium can be in leading to the inslot multidirectional flow, realize the heat dissipation, have excellent samming performance.

Furthermore, the through groove is annular, spiral, X-shaped, meter-shaped or long and is formed by punching. The shape of the through groove can be designed as required, a stamping die is manufactured, stamping forming is carried out, and the device has the advantages of high production efficiency and low production cost.

Further, the panel and the groove plate are hermetically connected in a plane brazing mode. The production efficiency of the plane brazing is high, and the cost is low.

Further, the frid is the rectangle, leads to the groove and is many parallel rectangular grooves, and rectangular groove is the oblique angle setting with the long limit of frid, constitutes rectangular groove oblique angle between the long limit of rectangular groove and frid.

Furthermore, the angle of the opposite angle of the groove plate is more than or equal to 10 degrees, and the angle of the oblique angle of the strip groove is more than or equal to 10 degrees.

Further, the long slot bevel = slot plate diagonal.

Furthermore, at least two groove plates are arranged between the two panels, and the two groove plates are overlapped in the crossed direction of the long-strip grooves and are connected by plane brazing. The mode of overlapping the strip grooves in a crossed manner can realize the communication of all the strip grooves, so that the working medium can flow in all the strip grooves.

And furthermore, an interface is arranged on the side edge of the groove plate and communicated with the strip groove, the strip groove is vacuumized through the interface, and a working medium is filled into the strip groove. Two-phase fluid is formed in the temperature-equalizing fins, so that heat dissipation in a phase change mode is realized, and the heat dissipation efficiency and the temperature equalizing performance are improved.

Furthermore, the panel and the groove plate are made of high heat conduction materials. So as to further improve the heat dissipation efficiency and the temperature equalization performance.

Further, the high thermal conductive material is an aluminum plate.

The utility model has the advantages that: the two grooved plates provided with the long grooves are overlapped according to the crossed direction of the long grooves, then the grooved plates are clamped between the two panels, and the temperature-equalizing fin made by plane brazing has the advantages of small thickness, simple structure, simple and convenient manufacture and low cost, and the communicated long grooves contain more working media which can flow in multiple directions in the long grooves and have excellent temperature-equalizing performance.

Drawings

Figure 1 is a schematic view of a panel structure,

figure 2 is a schematic view of the structure of the slotted plate,

figure 3 is a schematic perspective view of an embodiment,

figure 4 is a schematic perspective exploded view of the embodiment,

figure 5 is a schematic front view of the embodiment,

figure 6 is a schematic side view of an embodiment,

fig. 7 is an enlarged view of a portion of fig. 6.

In the figure: 1-panel, 2-groove plate, 21-long groove, 22-interface, alpha-groove plate diagonal angle and beta-long groove oblique angle.

Detailed Description

The invention will be further described by means of specific embodiments and with reference to the accompanying drawings:

as shown in fig. 1: the panel 1 is made of an aluminum plate of high heat conductive material, and the shape of the panel 1 is determined according to the shape of the heating element, and is generally rectangular.

As shown in fig. 2: the slot plate 2 is made of an aluminum plate of high heat conductive material, and the shape of the slot plate 2 is determined according to the shape of the heating element, and is generally rectangular. Be provided with the logical groove that runs through frid 2 on frid 2, lead to the groove and adopt stamping forming, can design logical groove as required into: circular, spiral, X-shaped, meter-shaped or strip-shaped.

In this embodiment, the through groove is formed by a plurality of parallel long grooves 21, the long grooves 21 are arranged at oblique angles with the long sides of the groove plate 2, and a long groove oblique angle β is formed between the long grooves 21 and the long sides of the groove plate 2. The slot pitch angle beta is within + -10 deg. of the slot plate diagonal angle alpha, preferably equal to the slot plate diagonal angle alpha. The side of the groove plate 2 is provided with a port 22, and the port 22 is communicated with the long groove 21.

As shown in fig. 3 to 7: the samming fin includes: two face plates 1 and two groove plates 2. The two slotted plates 2 are overlapped according to the crossing direction of the long slots 21, and then are connected by plane brazing, so that all overlapped parts of the slotted plates 2 are connected by brazing, and all the long slots 21 are communicated in a crossing mode. And then the two panels 1 are used for clamping the two groove plates 2, and the two groove plates 2 are connected by adopting plane brazing, so that the two groove plates 2 are clamped between the two panels 1 in a sealing way, and all the long grooves 21 are sealed between the two panels 1 and are communicated with the outside only through the interfaces 22.

Finally, the strip groove 21 is evacuated through the interface 22, and the strip groove 21 is filled with the working medium. Two-phase fluid is formed in the temperature-equalizing fins, so that heat dissipation in a phase change mode is realized, and the heat dissipation efficiency and the temperature equalization performance can be greatly improved.

In summary, the following steps: the beneficial effects of the utility model are that: the two grooved plates provided with the long grooves are overlapped according to the crossed direction of the long grooves, then the grooved plates are clamped between the two panels, and the temperature-equalizing fin made by plane brazing has the advantages of small thickness, simple structure, simple and convenient manufacture and low cost, and the communicated long grooves contain more working media which can flow in multiple directions in the long grooves and have excellent temperature-equalizing performance.

The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, so all equivalent technical solutions should also belong to the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims (10)

1. A temperature equalization fin, comprising: panel (1) and frid (2), its characterized in that: the groove plate (2) is flat, a through groove penetrating through the groove plate (2) is formed in the groove plate (2), the groove plate (2) is clamped between the two panels (1) and is in sealing connection with the two panels (1), and working media are filled in the through groove.

2. The temperature equalization fin of claim 1, wherein: the through groove is annular, spiral, X-shaped, meter-shaped or long and is formed by punching.

3. The temperature equalization fin of claim 2, wherein: the panel (1) and the slot plate (2) are hermetically connected in a plane brazing mode.

4. The temperature equalization fin of claim 3, wherein: the frid (2) is the rectangle, leads to the groove and is many parallel rectangular grooves (21), and rectangular groove (21) is the oblique angle setting with the long limit of frid (2), constitutes rectangular groove oblique angle (beta) between the long limit of rectangular groove (21) and frid (2).

5. The temperature equalization fin of claim 4, wherein: the diagonal angle (alpha) of the groove plate plus 10 degrees is more than or equal to the diagonal angle (alpha) -10 degrees of the long-strip groove.

6. The temperature equalization fin of claim 5, wherein: the strip groove oblique angle (β) = the groove plate diagonal angle (α).

7. The temperature equalization fin according to any one of claims 1 to 6, wherein: at least two groove plates (2) are arranged between the two panels (1), and the two groove plates (2) are overlapped according to the crossed direction of the long grooves (21) and are connected by plane brazing.

8. The temperature equalization fin of claim 7, wherein: an interface (22) is arranged on the side edge of the groove plate (2), the interface (22) is communicated with the long groove (21), the long groove (21) is vacuumized through the interface (22), and working media are filled into the long groove (21).

9. The temperature equalization fin of claim 8, wherein: the panel (1) and the groove plate (2) are made of high heat conduction materials.

10. The temperature equalization fin of claim 9, wherein: the high heat conduction material is an aluminum plate.

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