CN111163612B

CN111163612B - Heat conduction device

Info

Publication number: CN111163612B
Application number: CN201910899883.7A
Authority: CN
Inventors: 李居强
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2021-08-27
Anticipated expiration: 2039-09-23
Also published as: CN111163612A

Abstract

The invention discloses a heat conduction device which comprises a device body and a heat pipe, wherein a cavity is arranged in the device body, working fluid is filled in the cavity, the heat pipe penetrates through the device body, and one section of the heat pipe is abutted against the cavity. The invention has high heat dissipation efficiency and good heat dissipation effect.

Description

Heat conduction device

Technical Field

The invention relates to the technical field of heat conduction, in particular to a heat conduction device.

Background

As the power of electronic products increases, the heat generated by the internal electronic components during operation is more intensive, and therefore, the internal electronic components need to be dissipated. At present, electronic elements are usually cooled through a heat pipe and a cooling fin, so that the requirement of high-density heat conduction cannot be met, and the cooling effect is not ideal.

Such as: chinese patent publication No. CN 105377004B discloses a heat sink, which comprises a heat sink body and a plurality of heat conducting fins, wherein each heat conducting fin has a fin bottom end and a fin top end, the fin bottom end is located on the front surface of the heat sink body and is integrally formed with the heat sink body, a groove is arranged between the longitudinal adjacent fin bottom ends, a groove is arranged between the transverse adjacent grooves, and a binder is arranged on the back surface of the heat sink body. In the invention, the heat-conducting fins are integrally installed on the heat-radiating fin body, so that heat is transferred to the heat-conducting fins through the heat-radiating fin body and is radiated through the fins. The radiating fin has low radiating efficiency and unsatisfactory radiating effect.

Disclosure of Invention

The invention aims to solve the problems of low heat dissipation efficiency and unsatisfactory heat dissipation effect of the existing heat dissipation plate and provides a heat conduction device with higher heat transfer density and better heat dissipation efficiency and effect.

The purpose of the invention is realized by the following technical scheme: a heat conduction device comprises a heat conduction block and a heat pipe, wherein a cavity is arranged in the heat conduction block, working fluid is filled in the cavity, the heat pipe penetrates through the heat conduction block, and the heat pipe penetrates through one section of the heat conduction block and abuts against the cavity.

When the heat-conducting module is used, the heat-conducting block is abutted against the electronic element, the heat pipe is connected with the cooling equipment, heat generated by the electronic element in the operation process is conducted to the heat-conducting block, the heat-conducting block transfers the heat to working fluid in the cavity, heat exchange is carried out between the heat pipe and the working fluid, and the heat is conducted outwards, so that the heat-radiating function is achieved. The invention has high heat dissipation efficiency and good heat dissipation effect. The invention overcomes the defects of low heat transfer density of the heat pipe, complex structure of the high heat transfer device and high cost, and simultaneously utilizes the advantages of unobvious heat transfer directivity of the heat pipe on a certain length, high heat transfer density of the high heat transfer device and small volume of the cavity.

Preferably, the heat conducting block is provided with a heat transfer boss. When the heat transfer device is used, the electronic element is tightly attached to the surface of the heat transfer boss, and heat exchange is carried out between the electronic element and the heat transfer boss.

Preferably, the inner wall of the cavity close to one side of the heat transfer boss is provided with a plurality of heat exchange fins.

Preferably, the heat conduction block is provided with a filling port for filling working fluid into the cavity. The filling port is used for filling working fluid into the cavity.

Preferably, the filling port comprises a second filling channel, a conical cavity, a threaded hole and an elastic body, the second filling channel, the conical cavity and the threaded hole are all arranged on the heat-conducting block, one end of the second filling channel is communicated with the cavity, the other end of the second filling channel is connected with the conical cavity, one end, far away from the second filling channel, of the conical cavity is connected with the threaded hole, and the threaded hole penetrates through the heat-conducting block; one end of the elastic body is abutted against the surface of the conical cavity, a threaded sleeve is connected in the threaded hole in a threaded mode, the threaded sleeve is cylindrical, and one end of the threaded sleeve is abutted against the elastic body. During filling, the threaded sleeve is unscrewed, the filling pipe is inserted into the threaded sleeve, the working fluid is filled into the cavity, the filling pipe is pulled out after filling is finished, and the threaded sleeve is screwed down to enable the elastomer to be tightly attached to the surface of the conical cavity, so that a sealing effect is achieved, and the working fluid in the cavity is prevented from overflowing.

Preferably, the elastomer is made of silicone.

Preferably, the filling port comprises a first filling channel arranged on the heat conducting block, one end of the first filling channel is communicated with the cavity, the other end of the first filling channel penetrates through the heat conducting block, a column hole crossed with the first filling channel is formed in the heat conducting block, the first filling channel penetrates through the column hole, an elastic sealing block is arranged in the column hole and comprises a cylindrical framework with adjustable diameter, an elastic outer ring made of elastic material is sleeved outside the framework, and the elastic outer ring is in interference fit with the column hole; and a screw plug is connected in the column hole in a threaded manner and is positioned above the elastic sealing block. The first filling channel is used for filling working fluid into the cavity. The screw plug is used for sealing the upper end of the column hole on one hand, and is used for pressing the elastic sealing block on the other hand to axially limit the elastic sealing block. When the filling is finished, the outer ring surface of the elastic sealing block is tightly attached to the inner wall of the column hole, the first filling channel is automatically sealed, the working fluid is prevented from leaking, and the whole filling process is simple and convenient. Through adjusting the diameter of skeleton, changed the external diameter of elasticity outer lane to make the sealed piece of elasticity can adapt the post hole of different diameters.

Preferably, the skeleton includes skeleton body, voussoir, the skeleton body is cylindricly, be provided with the breach on the skeleton body, the upper end width of breach is greater than the lower extreme width of breach, the both sides of breach are provided with first direction inclined plane, the both sides of voussoir are provided with the second direction inclined plane parallel with first direction inclined plane, first direction inclined plane respectively with the contact of second direction inclined plane, the lower extreme of plug screw and the upper end butt of voussoir. The screw plug is rotated to move downwards, the screw plug drives the wedge block to move downwards after moving downwards, and the framework body is expanded outwards under the action of the first guide inclined plane and the second guide inclined plane after the wedge block moves downwards, so that the diameter of the framework is increased, and the purpose of adjusting the diameter of the framework is achieved.

Preferably, the elastic outer ring is made of silica gel. Silica gel has good elasticity, can closely laminate with the column hole inner wall, and sealed effectual.

Preferably, a guide groove is formed in the first guide inclined surface, a guide protruding strip matched with the guide groove is formed in the second guide inclined surface, and the guide protruding strip is embedded into the guide groove.

Preferably, a sealing ring is embedded on the outer annular surface of the screw plug, and the sealing ring is in sealing fit with the inner annular surface of the column hole. The sealing ring can increase the sealing performance between the screw plug and the column hole.

The invention has the beneficial effects that: the invention has high heat dissipation efficiency and good heat dissipation effect.

Drawings

Fig. 1 is a schematic structural view of embodiment 1.

FIG. 2 is a sectional view of example 1.

FIG. 3 is a schematic view showing the structure of a filling port in example 1.

Fig. 4 is a schematic structural view of the skeleton.

Fig. 5 is a schematic structural view of the wedge.

Fig. 6 is a schematic structural view of embodiment 2.

FIG. 7 is a schematic view showing the structure of a filling port in example 2.

In the figure: 1. the heat exchange device comprises a heat conducting block, 2, a heat pipe, 3, a heat transfer boss, 4, a cavity, 5, a heat exchange sheet, 6, a filling port, 7, a first filling channel, 11, a column hole, 12, a plug screw, 13, a framework, 14, an elastic outer ring, 15, a sealing ring, 16, a framework body, 17, a wedge block, 18, a notch, 19, a first guide inclined plane, 20, a guide groove, 21, a second guide inclined plane, 22, a guide convex strip, 23, a second filling channel, 24, a conical cavity, 25, a threaded hole, 26, a screw sleeve, 27 and an elastic body.

Detailed Description

The invention is further described by the following detailed description in conjunction with the accompanying drawings.

Example 1:

as shown in fig. 1 to 5, a heat conduction device includes a heat conduction block 1 and a heat pipe 2. One side of the heat conducting block 1 is provided with a heat transfer boss 3. The heat conduction block 1 is internally provided with a cavity 4. The cavity 4 is filled with a working fluid. The inner wall of one side of the cavity 4 close to the heat transfer boss 3 is provided with a plurality of heat exchange fins 5. The heat exchange fins 5 are made of aluminum. The heat pipe 2 passes through the heat conduction block 1. The heat pipe 2 penetrates through a section of the heat conducting block 1 and is close to the cavity 4.

The heat conduction block 1 is provided with a filling port 6. The fill port 6 includes a first fill channel 7 disposed on the heat conductive block 1. One end of the first filling channel 7 is communicated with the cavity 4, and the other end of the first filling channel penetrates through the heat conducting block 1. The heat conducting block 1 is provided with a column hole 11 which is crossed with the first filling channel 7. The first filling channel 7 passes through the column hole 11. The diameter of the post hole 11 is larger than the first filling channel 7. An elastic sealing block is arranged in the column hole 11 and comprises a cylindrical framework 13 with an adjustable diameter. The frame 13 is externally sleeved with an elastic outer ring 14 made of elastic material. The elastic outer ring 14 is cylindrical. The elastomeric outer ring 14 is made of silicone. The elastic outer ring 14 is in interference fit with the column hole 11. The framework 11 comprises a framework body 16 and a wedge 17. The frame body 16 is cylindrical. The framework body 16 is provided with a notch 18. The width of the upper end of the notch 18 is greater than the width of the lower end of the notch 18. First guide inclined surfaces 19 are provided on both sides of the notch 18, and second guide inclined surfaces 21 parallel to the first guide inclined surfaces 19 are provided on both sides of the wedge 17. The first guide slopes 19 are in contact with the second guide slopes 21, respectively. The first guide slope 19 is provided with a guide groove 20. The guide groove 20 is provided along the length direction of the first guide slope 19. The second guiding inclined plane 21 is provided with a guiding convex strip 22 matched with the guiding groove 20. The guide ribs 22 are fitted into the guide grooves 20. A screw plug 12 is screwed in the column hole 11. The plug screw 12 is located above the elastic sealing block. The lower end of the plug screw 12 abuts against the upper end of the wedge 17. The outer ring surface of the screw plug 12 is embedded with a sealing ring 15. The sealing ring 15 is in sealing fit with the inner annular surface of the column hole 11. The filling port is used for filling working fluid into the cavity. The screw plug is used for sealing the upper end of the column hole on one hand, and is used for pressing the elastic sealing block on the other hand to axially limit the elastic sealing block. When the filling is finished, the outer ring surface of the elastic sealing block is tightly attached to the inner wall of the column hole, the first filling channel is automatically sealed, the working fluid is prevented from leaking, and the whole filling process is simple and convenient. Through adjusting the diameter of skeleton, changed the external diameter of elasticity outer lane to make the sealed piece of elasticity can adapt the post hole of different diameters. The screw plug is rotated to move downwards, the screw plug drives the wedge block to move downwards after moving downwards, and the framework body is expanded outwards under the action of the first guide inclined plane and the second guide inclined plane after the wedge block moves downwards, so that the diameter of the framework is increased, and the purpose of adjusting the diameter of the framework is achieved.

Example 2:

as shown in fig. 6 to 7, embodiment 2 differs from embodiment 1 in that: in embodiment 2, the filling port 6 includes a second filling passage 23, a tapered cavity 24, a threaded hole 25, and an elastic body 27. The second filling channel 23, the conical cavity 24 and the threaded hole 25 are all arranged on the heat conducting block 1. One end of the second filling channel 23 is communicated with the cavity 4, and the other end is connected with the conical cavity 24. The end of the conical cavity 24 remote from the second filling channel 23 is connected to a threaded hole 25. The screw hole 25 penetrates the heat conduction block 1. The elastic body 27 is a cylindrical body. The elastic body 27 is made of silicone rubber. One end of the elastic body 27 abuts against the surface of the tapered cavity 24, and a threaded sleeve 26 is screwed into the threaded hole 25. The screw 26 has a cylindrical shape, and one end of the screw 26 abuts against the elastic body 27. The rest of the structure was the same as in example 1. During filling, the threaded sleeve is unscrewed, the filling pipe is inserted into the threaded sleeve, the working fluid is filled into the cavity, the filling pipe is pulled out after filling is finished, and the threaded sleeve is screwed down to enable the elastomer to be tightly attached to the surface of the conical cavity, so that a sealing effect is achieved, and the working fluid in the cavity is prevented from overflowing.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A heat conducting device, characterized by: the heat pipe type heat exchanger comprises a heat conduction block (1) and a heat pipe (2), wherein a cavity (4) is arranged in the heat conduction block (1), working fluid is filled in the cavity (4), the heat pipe (2) penetrates through the heat conduction block (1), and one section of the heat pipe (2) penetrating through the heat conduction block (1) is abutted against the cavity (4); the heat conduction block (1) is provided with a filling port (6) for filling working fluid into the cavity; the filling port (6) comprises a first filling channel (7) arranged on the heat conducting block (1), one end of the first filling channel (7) is communicated with the cavity (4), the other end of the first filling channel penetrates through the heat conducting block (1), a column hole (11) crossed with the first filling channel (7) is formed in the heat conducting block (1), an elastic sealing block is arranged in the column hole (11), the elastic sealing block comprises a cylindrical framework (13) with an adjustable diameter, an elastic outer ring (14) made of elastic materials is sleeved outside the framework (13), and the elastic outer ring (14) is in interference fit with the column hole (11); a screw plug (12) is connected in the column hole (11) in a threaded manner, and the screw plug (12) is positioned above the elastic sealing block; skeleton (10) are including skeleton body (16), voussoir (17), skeleton body (16) are cylindricly, be provided with breach (18) on skeleton body (16), the upper end width of breach (18) is greater than the lower extreme width of breach (18), the both sides of breach (18) are provided with first direction inclined plane (19), the both sides of voussoir (17) are provided with second direction inclined plane (21) parallel with first direction inclined plane (19), first direction inclined plane (19) contact with second direction inclined plane (21) respectively, the lower extreme of plug screw (12) and the upper end butt of voussoir (17).

2. A heat conducting device according to claim 1, characterised in that the heat conducting block (1) is provided with heat transfer bosses (3).

3. A heat conducting device according to claim 2, characterized in that the inner wall of the cavity (4) on the side close to the heat transfer boss (3) is provided with a plurality of heat exchanging fins (5).

4. A heat transfer device according to claim 1, characterized in that the elastic outer ring (14) is made of silicone.

5. A heat conducting device according to claim 1, characterized in that the first guiding ramp (19) is provided with guiding grooves (20), and the second guiding ramp (21) is provided with guiding ribs (22) cooperating with the guiding grooves (20), said guiding ribs (22) engaging in the guiding grooves (20).