CN216673629U

CN216673629U - Brazing laminated heat pipe radiator

Info

Publication number: CN216673629U
Application number: CN202122662566.9U
Authority: CN
Inventors: 梁逸笙
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-06-03
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses a brazed laminated heat pipe radiator, which comprises a base body and a plurality of radiating fins, wherein the base body is provided with a plurality of through holes; the base body is internally provided with a closed cavity for placing a refrigerant, and the root of each radiating fin is tightly contacted with the top surface of the base body; the heat pipe penetrates through the through hole of the radiating fin, and the outer wall of the heat pipe is contacted with the radiating fin; one end of the heat pipe is communicated with the cavity, and the other end of the heat pipe is communicated with the cavity; the distance is reserved between the penetrating position of the heat pipe on the corresponding radiating fin and the top surface of the base body; the base body, the radiating fins and the heat pipe are made of metal materials. The utility model ensures that the temperature difference between each point on the radiating fin and the heat source is small, and the radiating fin can also have enough radiating efficiency at a place far away from the heat source. The utility model has simple and compact structure. Compared with the traditional radiator with the same area, the structure of the utility model greatly improves the radiating efficiency.

Description

Brazing laminated heat pipe radiator

Technical Field

The utility model relates to a brazed laminated heat pipe radiator, and belongs to the technical field of radiators.

Background

The radiator in the prior art is widely applied to the heat dissipation of electronic elements or the heat dissipation and heat exchange of various heat sources, in particular to the heat dissipation of a CPU. The existing radiator is generally made of aluminum, namely, radiating fins are extruded on an aluminum substrate. When the heat dissipation structure is used, the base body is used for contacting a heat source, and the heat transferred to the base body is dissipated to the air through the heat dissipation fins, so that the heat dissipation effect is achieved. However, the heat dissipation fins cannot be made higher, that is, the top ends of the heat dissipation fins cannot be too far away from the base, even if the heat dissipation fins can be made higher, the heat dissipation efficiency is greatly reduced if the far ends of the heat dissipation fins are too far away from the base, so that an ideal effect cannot be achieved, and the efficiency which is not utilized when the heat dissipation fins reach a certain height is achieved. How to improve the heat dissipation efficiency of the radiator is a technical problem that needs to be solved by the technical field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a brazing laminated heat pipe radiator, which improves the heat radiation efficiency and has a simple structure.

The utility model can adopt the following technical scheme:

a brazed laminated heat pipe radiator comprises a base body and a plurality of radiating fins; the base body is internally provided with a closed cavity for placing a refrigerant, and the root of each radiating fin is tightly contacted with the top surface of the base body; the heat pipe penetrates through the through hole of the radiating fin, and the outer wall of the heat pipe is contacted with the radiating fin; one end of the heat pipe is communicated with the cavity, and the other end of the heat pipe is communicated with the cavity; the distance is reserved between the penetrating position of the heat pipe on the corresponding radiating fin and the top surface of the base body; the base body, the radiating fins and the heat pipe are made of metal materials.

The utility model can further adopt the following improvement measures to solve the problems:

the following improvement measures are further adopted: the basal body comprises a top plate and a bottom plate, wherein a concave part is arranged on the bottom surface of the top plate, or a concave part is arranged on the upper surface of the bottom plate, the top plate and the bottom plate are connected in a sealing way, and the concave part, the top plate and the bottom plate enclose the cavity.

The following improvement measures are further taken: the base body is provided with a connecting plate below and the connecting plate is made of metal materials.

The following improvement measures are further adopted: the periphery of the connecting plate is hermetically connected with the outer surface of the bottom plate, a heat conducting cavity is arranged between the connecting plate and the bottom plate, the heat conducting cavity is communicated with the cavity through an opening arranged in the bottom plate, and the connecting plate is made of metal materials.

The following improvement measures are further adopted: the heat conducting cavity is formed by a groove arranged outside the bottom plate and the inner surface of the connecting plate.

The following improvement measures are further adopted: the opening of the bottom plate is arranged in the groove.

The following improvement measures are further adopted: the lower surface of the bottom plate is provided with a plurality of inward recesses, the recesses form protrusions on the upper surface of the bottom plate, and the protrusions are welded with the inner surface of the top plate to form a force bearing reinforcing part between the top plate and the bottom plate.

The following improvement measures are further adopted: the root of each radiating fin is provided with a bent edge, and the root of each radiating fin is welded with the top surface of the base body through the bent edge to realize tight contact; the edge of the through hole of the radiating fin is provided with a bent edge which is in close contact with the outer wall of the corresponding heat pipe.

The following improvement measures are further taken: the heat pipe is in an inverted U shape, and the middle section of the heat pipe penetrates through the radiating fin.

The following improvement measures are further adopted: the number of the heat pipes is multiple, and the through holes of the radiating fins are uniformly distributed on the radiating fins.

The technical scheme has the following technical effects:

1. the utility model ensures that the temperature difference between each point on the radiating fin and the heat source is small, so that the radiating fin can have enough radiating efficiency at a place far away from the heat source, thereby greatly improving the radiating efficiency, and avoiding the problems that in the traditional radiator in the prior art, the heat transfer efficiency of the far end of the radiating fin is low, the heat is less, the efficiency is gradually reduced as the distance from the heat source is farther, and the radiating efficiency is finally low. Even if the radiating fins are high enough, the corresponding through holes can be arranged at different heights of the radiating fins to allow the heat pipe to pass through, so that the different heights of the radiating fins can be heated and radiated with highest efficiency.

2. The utility model has simple and compact structure.

3. Compared with the traditional radiator with the same area, the structure of the utility model greatly improves the radiating efficiency.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of another viewing angle of the present invention.

Fig. 3 is an exploded schematic view of the present invention.

Fig. 4 is an exploded view of another viewing orientation of the present invention.

Fig. 5 is a schematic cross-sectional view of the structure of the present invention.

Fig. 6 is a schematic view of a heat dissipating fin of the present invention.

Detailed Description

The present invention will be described in detail with reference to specific examples.

Example 1: as shown in fig. 1 to 6, a brazed laminated heat pipe radiator includes a base 1, a plurality of heat dissipating fins 2; the base is internally provided with a closed cavity 3 for placing a refrigerant, the root of each radiating fin 2 is tightly contacted with the top surface of the base, and the contact and the fixation can be realized by adopting a brazing process for welding. The heat pipe 4 penetrates through the through hole 21 of the radiating fin, the outer wall of the heat pipe 4 is in contact with the radiating fin 2, and the contact and fixation can be realized by adopting a brazing process for welding. One end of the heat pipe is communicated with the cavity, and the other end of the heat pipe 4 is communicated with the cavity 3. The heat pipe 4 has a distance between the passing position on the corresponding heat dissipation fin 2 and the top surface of the base body 1; the base body 1, the radiating fins 2 and the heat pipe 4 are made of metal materials.

In one improvement of this embodiment, the number of the heat pipes 4 is multiple, and the through holes of the heat dissipation fins are uniformly distributed on the heat dissipation fins. As shown in fig. 1, the through holes are uniformly distributed in the horizontal direction on the heat dissipating fins.

The working principle is as follows:

the refrigerant can be placed in the cavity before the assembly is completed, and can be placed when the heat pipe is communicated with the cavity for assembly, and then is welded and sealed, and also can be placed in other places and then is sealed. When the heat dissipation fin is used, the base body is in contact with the heat source, and under the condition that the roots of the heat dissipation fins are in contact with the base body, the heat can be fully transferred and dissipated near the roots of the heat dissipation fins. In addition, because the heat pipe penetrates through the radiating fins, the heat pipe can quickly lead the heat of the base body to the contact positions of the heat pipe and the radiating fins under the action of a refrigerant, so that the temperature difference between each point on the radiating fins and a heat source is small, the heat pipe can quickly receive the heat and radiate the heat even if the radiating fins are relatively far away from the base body, the radiating efficiency is greatly improved, and the problem that the radiating efficiency is low because the heat pipe is far away from the heat source and the efficiency is gradually reduced in the traditional radiator in the prior art can be solved. Even if the radiating fins are high enough, the corresponding through holes can be arranged at different heights of the radiating fins to allow the heat pipe to pass through, so that the different heights of the radiating fins can be heated and radiated with highest efficiency. For example, a through hole is provided in the middle portion and near the highest portion of the heat dissipating fin. It is of course also possible to provide the through holes at regular intervals in the height direction of the heat dissipating fins.

Example 2: the base 1 includes a top plate 11 and a bottom plate 12, and a concave portion is provided on the bottom surface of the top plate or on the top surface of the bottom plate, and in this example, as shown in fig. 5, concave portions are provided on both the bottom surface of the top plate and the top surface of the bottom plate. The top plate and the bottom plate are connected in a sealing way, and can be connected by brazing, and the cavity 3 is defined by the concave part, the top plate and the bottom plate. The structure is easy to assemble and simple. The rest is the same as example 1. The further improvement is that the top plate is provided with top plate through holes communicated with the cavity at the positions corresponding to the two ends of the heat pipe, and the two ends of the heat pipe can be communicated with the cavity by being welded with the top plate through holes.

Example 3: the periphery of the connecting plate 5 is hermetically connected with the outer surface of the bottom plate, a heat conducting cavity 51 is arranged between the connecting plate 5 and the bottom plate, the heat conducting cavity 51 is communicated with the cavity through an opening 121 arranged on the bottom plate, and the connecting plate is made of metal materials. The connection board may be used to connect a heat source, such as a CPU in an electronic component. The rest is the same as example 2.

Example 4: the heat conducting cavity 51 is formed by a groove 122 provided on the outer surface of the base plate and the inner surface of the connecting plate 5. The rest is the same as example 3.

In a further modification, the opening 121 of the bottom plate is disposed in the groove 122.

Example 5: in a further improvement, a plurality of inward recesses 124 are arranged below the bottom plate 12, the recesses form protrusions 123 on the upper surface of the bottom plate, the protrusions 123 are welded with the inner surface of the top plate 11, and the force bearing reinforcing part between the top plate and the bottom plate can be formed by brazing welding. Therefore, the tensile force or the pressure generated after the refrigerant expands or the external force in the cavity can be borne, and the strength of the matrix is increased. The rest of the examples are the same as examples 2, 3 and 4.

Example 6: the root of each radiating fin 2 is provided with a bent edge 22, and the root of each radiating fin is welded with the top surface of the base body through the bent edge 22 to realize close contact. The edge of the through hole of the radiating fin is provided with a bent edge 23, and the bent edge 23 is in close contact with the outer wall of the corresponding heat pipe and can be welded by brazing. The rest is the same as the above embodiments.

Example 7: the heat pipe 4 is of an inverted U shape, and the middle section of the heat pipe penetrates through the radiating fin. The two end parts of the heat pipe are respectively positioned at the two sides of the radiating fin, and the structure enables the whole radiator to be compact. The rest is the same as the above embodiments.

Example 8: the lower surface of the base body is provided with a connecting plate which is made of metal material. The rest is the same as the

above embodiments

1 and 2.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A brazing laminated heat pipe radiator is characterized in that: the heat dissipation structure comprises a base body and a plurality of heat dissipation fins; the base body is internally provided with a closed cavity for placing a refrigerant, and the root of each radiating fin is tightly contacted with the top surface of the base body; the heat pipe penetrates through the through hole of the radiating fin, and the outer wall of the heat pipe is contacted with the radiating fin; one end of the heat pipe is communicated with the cavity, and the other end of the heat pipe is communicated with the cavity; the distance is reserved between the penetrating position of the heat pipe on the corresponding radiating fin and the top surface of the base body; the base body, the radiating fins and the heat pipe are made of metal materials.

2. The brazed laminated heat pipe radiator of claim 1, wherein: the basal body comprises a top plate and a bottom plate, wherein a concave part is arranged on the bottom surface of the top plate, or a concave part is arranged on the upper surface of the bottom plate, the top plate and the bottom plate are connected in a sealing way, and the concave part, the top plate and the bottom plate enclose the cavity.

3. The brazed laminated heat pipe radiator of claim 1 or 2, wherein: the lower surface of the base body is provided with a connecting plate which is made of metal material.

4. The brazed laminated heat pipe radiator of claim 2, wherein: the periphery of the connecting plate is hermetically connected with the outer surface of the bottom plate, a heat conducting cavity is arranged between the connecting plate and the bottom plate, the heat conducting cavity is communicated with the cavity through an opening arranged in the bottom plate, and the connecting plate is made of metal materials.

5. The brazed stacked tube heat sink as recited in claim 4, wherein: the heat conducting cavity is formed by a groove arranged outside the bottom plate and the inner surface of the connecting plate.

6. The brazed laminated heat pipe radiator of claim 5, wherein: the opening of the bottom plate is arranged in the groove.

7. The brazed laminated heat pipe radiator of claim 2, wherein: the lower surface of the bottom plate is provided with a plurality of inward recesses, the recesses form protrusions on the upper surface of the bottom plate, and the protrusions are welded with the inner surface of the top plate to form a force bearing reinforcing part between the top plate and the bottom plate.

8. The brazed laminated heat pipe radiator of claim 1, wherein: the root of each radiating fin is provided with a bent edge, and the root of each radiating fin is welded with the top surface of the base body through the bent edge to realize tight contact; the edge of the through hole of the radiating fin is provided with a bent edge which is in close contact with the outer wall of the corresponding heat pipe.

9. The brazed laminated heat pipe radiator of claim 1, wherein: the heat pipe is in an inverted U shape, and the middle section of the heat pipe penetrates through the radiating fin.

10. The brazed laminated heat pipe radiator of claim 1, wherein: the number of the heat pipes is multiple, and the through holes of the radiating fins are uniformly distributed on the radiating fins.