CN216245753U

CN216245753U - Heat pipe radiator

Info

Publication number: CN216245753U
Application number: CN202122842326.7U
Authority: CN
Inventors: 唐亚洲; 王治颖; 郭光辉
Original assignee: CRRC Industry Institute Co Ltd
Current assignee: CRRC Industry Institute Co Ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-04-08
Anticipated expiration: 2031-11-18

Abstract

The utility model discloses a heat pipe radiator, which comprises a bottom plate, wherein one side of the bottom plate is a heat source acting surface used for being attached to a power device, one side of the bottom plate, which is far away from the heat source acting surface, is provided with a heat pipe, the bottom plate is provided with a mounting hole parallel to the flowing direction of radiating air and extending from the side surface of the bottom plate to the inside of the bottom plate, a temperature equalizing pipe is arranged in the mounting hole, and a phase change cooling medium is arranged in the temperature equalizing pipe. Be equipped with the samming pipe in the mounting hole of bottom plate, the phase change coolant medium of samming inside carries out the in-process that the heat absorption is exothermic and is circulated, can reach the soaking effect of bottom plate with the heat transfer that is close to heat dissipation wind entrance to being close to heat dissipation wind exit, has improved heat pipe radiator's samming performance.

Description

Heat pipe radiator

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a heat pipe radiator.

Background

The rail transit train traction system is high in capacity and small in size, and needs to exert larger traction power in a limited space. Therefore, the heat flow density of the system is high, the junction temperature of the power device is high, but the reliability and the service life of the power device are seriously influenced by the high temperature.

The conventional rail transit train traction system generally adopts a heat pipe radiator for heat dissipation, and one radiator simultaneously dissipates a plurality of power devices. The air speed and the temperature at the air inlet of the radiator are high, the air speed and the temperature at the air outlet are low, so that the temperature rise of the power device is inconsistent, and the power device at the air outlet is easy to overtemperature.

Therefore, how to avoid the over-temperature of the power device at the air outlet position is a technical problem that needs to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a heat pipe radiator, wherein a heat pipe is arranged in a bottom plate, and heat at an air outlet is transferred to an air inlet through the heat pipe, so that the power device at the air outlet is prevented from being easily over-heated.

In order to achieve the purpose, the utility model provides a heat pipe radiator which comprises a bottom plate, wherein one side of the bottom plate is a heat source acting surface used for being attached to a power device, a heat pipe is arranged on one side, away from the heat source acting surface, of the bottom plate, the bottom plate is provided with a mounting hole parallel to the flowing direction of radiating air and extending from the side surface of the bottom plate to the inside of the bottom plate, a temperature equalizing pipe is arranged in the mounting hole, and a phase change cooling medium is arranged in the temperature equalizing pipe.

Preferably, one side of the bottom plate, which is far away from the heat source action surface, is provided with a mounting groove parallel to the flow direction of the heat dissipation air, the heat pipe is an L-shaped heat pipe, the L-shaped heat pipe comprises a transverse pipe section and a longitudinal pipe section which are perpendicular to each other, the transverse pipe section is mounted in the mounting groove, and a preset included angle is formed between the longitudinal pipe section and the horizontal plane, so that one end, which is far away from the transverse pipe section, of the longitudinal pipe section is higher than that of the transverse pipe section.

Preferably, the mounting hole is a blind hole, an orifice of the mounting hole faces an air inlet of the heat radiation air, and the temperature equalizing pipe is connected with the mounting hole through interference fit or brazing.

Preferably, one end of the temperature equalizing pipe is attached to the bottom of the mounting hole, the other end of the temperature equalizing pipe is close to the hole opening, and a plug is arranged in the hole opening of the mounting hole to fix the temperature equalizing pipe.

Preferably, a wick structure is arranged on the inner side wall of the temperature equalizing pipe.

Preferably, the heat pipe further comprises a heat radiation fin, the heat radiation fin is provided with an insertion hole penetrating along the thickness direction, and the heat pipe is connected with the heat radiation fin through the insertion hole.

Preferably, the periphery of the insertion hole is provided with a tubular support ring for being attached to the outer side wall of the heat pipe, and an included angle between the axis of the support ring and the horizontal plane is equal to the preset included angle.

Preferably, radiating fin is equipped with at least one cartridge hole group, cartridge hole group includes first cartridge hole row and second cartridge hole row, first cartridge hole row with the cartridge hole quantity that second cartridge hole row with equal to the quantity of mounting groove, the mounting groove numbers along the order from top to bottom, installs and is the even number heat pipe in the mounting groove is installed in the cartridge hole of first cartridge hole row, install and is the odd number heat pipe in the mounting groove is installed in the cartridge hole of second cartridge hole row, install in first cartridge hole row the horizontal section of heat pipe to this the direction extension of second cartridge hole row in the cartridge hole group, install in the second cartridge hole row the horizontal section of heat pipe to this the direction extension of first cartridge hole row in the cartridge hole group.

Preferably, the preset angle ranges from 0 degrees to 10 degrees.

The utility model provides a heat pipe radiator which comprises a bottom plate, wherein one side of the bottom plate is a heat source acting surface used for being attached to a power device, a heat pipe is arranged on one side of the bottom plate, which is far away from the heat source acting surface, the bottom plate is provided with a mounting hole parallel to the flowing direction of radiating air and extending from the side surface of the bottom plate to the inside of the bottom plate, a temperature equalizing pipe is arranged in the mounting hole, and a phase change cooling medium is arranged in the temperature equalizing pipe.

Be equipped with the samming pipe in the mounting hole of bottom plate, the phase change coolant medium of samming inside carries out the in-process that the heat absorption is exothermic and is circulated, can reach the soaking effect of bottom plate with the heat transfer that is close to heat dissipation wind exit to being close to heat dissipation wind entrance, has improved heat pipe radiator's samming performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a side view of a heat pipe heat sink according to the present invention;

FIG. 2 is a top view of the heat pipe radiator of FIG. 1;

FIG. 3 is a schematic structural view of the base plate of FIG. 1;

FIG. 4 is a side view of the base plate of FIG. 3;

FIG. 5 is a view taken in the direction I of FIG. 4;

FIG. 6 is a schematic view of the L-shaped heat pipe of FIG. 1 engaged with a support plate;

FIG. 7 is a schematic structural view of the support plate of FIG. 1;

fig. 8 is a side view of the support plate of fig. 1.

Wherein the reference numerals in fig. 1 to 8 are:

the heat pipe comprises a bottom plate 1, a temperature equalizing pipe 2, an L-shaped heat pipe 3, plugs 4, radiating fins 5, a mounting groove 11, a mounting hole 12, a transverse pipe section 31, a longitudinal pipe section 32, a support ring 51 and a tongue turning positioning structure 52.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.

Please refer to fig. 1 to 8.

The structure of the heat pipe radiator provided by the utility model is shown in fig. 1 and fig. 2, and comprises a bottom plate 1, a temperature equalizing pipe 2 and a heat pipe. Wherein, the bottom plate 1 can be arranged along the vertical direction, the plate surface on one side of the bottom plate 1 is a heat source acting surface, and the heat source acting surface is tightly attached to equipment needing heat dissipation to play a role in heat transfer. The heat pipe is installed on the face of the other side of the bottom plate 1, one side of the heat pipe connected with the bottom plate 1 is a high-temperature side, and one side far away from the bottom plate 1 is a heat dissipation side. The bottom plate 1 is provided with a mounting hole 12, and the mounting hole 12 extends from the side surface of the bottom plate 1 to the inside of the bottom plate 1. One side of the heat pipe radiator is an air inlet of radiating air, the other side of the heat pipe radiator is an air outlet, the bottom plate 1 is parallel to the flowing direction of the radiating air, and the mounting hole 12 extends from one side of the bottom plate 1 close to the air inlet to one side of the bottom plate 1 close to the air outlet. The mounting hole 12 is internally provided with a temperature equalizing pipe 2, and the temperature equalizing pipe 2 is internally provided with a phase change cooling medium. In the heat dissipation process, the temperature of one side, close to the air outlet, of the bottom plate 1 is higher than that of one side, close to the air inlet, of the bottom plate, the phase-change cooling medium in the high-temperature area of the temperature equalizing pipe 2 is evaporated, and the phase-change cooling medium in the low-temperature area is condensed, so that the pressure of the high-temperature area in the temperature equalizing pipe 2 is higher than that of the low-temperature area. Under the action of pressure difference, the phase change cooling medium flows from a high-temperature area to a low-temperature area, and simultaneously, heat is transferred from the high-temperature area to the low-temperature area along with evaporation heat absorption and condensation heat release, so that the temperature equalization performance of the bottom plate 1 is ensured.

Optionally, the mounting hole 12 is a blind hole, as shown in fig. 1 and fig. 3, an orifice of the mounting hole 12 faces an air inlet of the heat dissipation air, and the temperature equalizing pipe 2 is inserted into the mounting hole 12 and connected to the mounting hole 12 in an interference fit or brazing manner, so as to reduce thermal contact resistance between the temperature equalizing pipe 2 and the bottom plate 1.

Optionally, the temperature equalizing pipe 2 is an I-shaped pipe, one end of the temperature equalizing pipe 2 is attached to the bottom of the mounting hole 12, and the other end of the temperature equalizing pipe is close to the orifice. And a plug 4 is arranged at the orifice of the mounting hole 12, and the plug 4 is inserted into the orifice and abuts against the temperature equalizing pipe 2 to fix the temperature equalizing pipe in the mounting hole 12. The plug 4 can be a rubber plug 4 or the like. Because the temperature equalizing pipe 2 is usually made of metal materials such as copper or aluminum, the rubber plug 4 can isolate the temperature equalizing pipe 2 from the external environment, thereby avoiding the contact between the wet air and the temperature equalizing pipe 2 and avoiding the chemical corrosion of the temperature equalizing pipe 2. Of course, the user can also adopt the L-shaped or U-shaped temperature equalizing pipe 2 according to the requirement. For example, when the temperature equalizing pipe 2 is an L-shaped pipe, a long pipe section of the L-shaped pipe is inserted into the mounting hole 12, and a short pipe section is located outside the orifice, and the temperature equalizing pipe 2 is fixed by a mechanism such as a snap. The length of the mounting hole 12 is generally greater than 2/3 of the width of the bottom plate 1, so as to ensure that the bottom plate 1 is sufficiently uniform in temperature in the width direction.

Further, in order to improve the temperature equalizing performance of the temperature equalizing pipe 2, a liquid absorbing core structure is arranged on the inner side wall of the temperature equalizing pipe 2. The wick may be embodied as one or a combination of several of various structures such as an inner channel, a sintered metal or a metal mesh, and the like, which is not limited herein. The wick structure can improve the thermal conductivity and the temperature-equalizing performance of the temperature-equalizing pipe 2.

Alternatively, the heat pipe may be an L-shaped heat pipe 3, as shown in fig. 2 and 6, a mounting groove 11 parallel to the flow direction of the cooling air is provided on one side of the bottom plate 1 away from the heat source acting surface. The heat pipe is an L-shaped heat pipe 3, the L-shaped heat pipe 3 comprises a transverse pipe section 31 and a longitudinal pipe section 32 which are perpendicular to each other, and the transverse pipe section 31 is installed in the installation groove 11 and is fixedly connected with the installation groove 11 in a welding mode. The longitudinal pipe section 32 has a predetermined angle with the horizontal plane, so that the end of the longitudinal pipe section 32 close to the bottom plate 1 is lower than the end far from the bottom plate 1.

Optionally, the value range of the preset angle is 0-10 °. The working medium in the heat pipe exchanges heat with the bottom plate 1 in the transverse pipe section 31 to generate working medium steam. The working medium steam flows from the end close to the bottom plate 1 to the end far from the bottom plate 1 along the longitudinal pipe section 32, and can flow back to the end close to the bottom plate 1 by gravity after being condensed at the end far from the bottom plate 1, so that the longitudinal pipe section 32 can be fully utilized for heat dissipation.

Optionally, the heat pipe radiator further includes a heat radiation fin 5. As shown in fig. 1, the heat radiating fins 5 are parallel to the base plate 1. The heat radiating fins 5 are provided with insertion holes penetrating in the thickness direction, and the heat pipe is connected with the heat radiating fins 5 through the insertion holes. The heat pipe is in contact with the heat dissipation fins 5, so that the heat dissipation area can be increased. In addition, the heat radiation fins 5 can support the heat pipe, and the structural strength is improved.

Optionally, a support ring 51 is disposed on the periphery of the insertion hole, as shown in fig. 7 and 8, the support ring 51 is attached to the outer side wall of the longitudinal pipe section 32, and an included angle between the axis of the support ring 51 and the horizontal plane is equal to a preset included angle. When inserted into the insertion hole, the longitudinal tube section 32 is connected to the support ring 51 by welding or interference fit. This connection enables the longitudinal tube section 32 to fit closely to the support ring 51, thereby reducing heat transfer resistance. The support ring 51 can increase the contact area between the heat pipe 3 and the heat dissipation fin 5, and further improve the heat transfer effect.

Optionally, the heat dissipation fin 5 is provided with at least one insertion hole group, the insertion hole group includes a first insertion hole row and a second insertion hole row, both rows of insertion holes can be distributed along the vertical direction, and a distance is set between the two rows of insertion holes. As shown in FIG. 6, the bottom plate 1 is provided with a plurality of mounting slots 11 from top to bottom, and the mounting slots 11 can be numbered from top to bottom starting from 1. The insertion holes in the first insertion hole row correspond to the installation grooves 11 with even numbers one by one, and the insertion holes in the second insertion hole row correspond to the installation grooves 11 with odd numbers one by one. The horizontal pipe sections 31 of the L-shaped heat pipes 3 installed in the installation grooves 11 with even numbers extend in the direction of the second insertion hole row, and the longitudinal pipe sections 32 of the L-shaped heat pipes are inserted into the corresponding insertion holes of the first insertion hole type. Correspondingly, the transverse pipe sections 31 of the L-shaped heat pipes 3 installed in the odd-numbered installation slots 11 extend in the direction of the first insertion hole row, and the longitudinal pipe sections 32 of the L-shaped heat pipes are inserted into the corresponding insertion holes of the second insertion hole type. The longitudinal pipe sections 32 of the L-shaped heat pipes 3 in the two adjacent mounting grooves 11 are spaced by a preset distance, so that cooling air can pass through the longitudinal pipe sections. And a gap for the cooling air to pass through is also formed between two adjacent longitudinal pipe sections 32 in the first plug-in hole row, so that the wind resistance of the heat pipe radiator is reduced, and the heat radiation performance of the heat pipe radiator is improved.

In addition, the heat pipe radiator is provided with a plurality of radiating fins 5 along the length direction of the longitudinal pipe section 32, a certain distance is required to be arranged between every two adjacent radiating fins 5, a radiating air channel is ensured to be arranged between the radiating fins 5, and the radiating air can be smoothly circulated. Therefore, the heat dissipation fin 5 has the tongue-turning positioning structure 52, and the tongue-turning positioning structure 52 is perpendicular to the plate surface of the heat dissipation fin 5. When the heat dissipation fins 5 are installed, the tongue-turning positioning structure 52 can abut against the adjacent heat dissipation fins 5, so that the heat dissipation air channel is ensured to have enough width.

In this embodiment, the bottom plate 1 of the heat pipe radiator is provided with the temperature equalizing pipe 2 extending from the heat dissipation air inlet to the heat dissipation air outlet, and the temperature equalizing pipe 2 can transfer heat at the heat dissipation air outlet to the heat dissipation air inlet, thereby improving the temperature equalizing performance of the heat pipe radiator.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The heat pipe radiator provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a heat pipe radiator, its characterized in that, includes bottom plate (1), one side of bottom plate (1) is for the heat source effect face that is used for laminating with power device, bottom plate (1) is kept away from heat source effect face one side installs the heat pipe, bottom plate (1) be equipped with along parallel heat dissipation wind flow direction by the side of bottom plate (1) extends to bottom plate (1) inside mounting hole (12), be equipped with in mounting hole (12) samming pipe (2), be equipped with the phase transition coolant in samming pipe (2).

2. A heat pipe radiator according to claim 1, wherein a mounting groove (11) parallel to the flow direction of the heat dissipating wind is formed in a side of the bottom plate (1) away from the heat source acting surface, the heat pipe is an L-shaped heat pipe (3), the L-shaped heat pipe (3) comprises a transverse pipe section (31) and a longitudinal pipe section (32) which are perpendicular to each other, the transverse pipe section (31) is mounted in the mounting groove (11), and a preset included angle is formed between the longitudinal pipe section (32) and the horizontal plane, so that one end, away from the transverse pipe section (31), of the longitudinal pipe section (32) is higher than the transverse pipe section (31).

3. A heat pipe radiator according to claim 2, wherein the mounting hole (12) is a blind hole, the opening of the mounting hole (12) faces the air inlet of the heat dissipating air, and the temperature equalizing pipe (2) is connected with the mounting hole (12) by interference fit or brazing.

4. A heat pipe radiator according to claim 3, wherein one end of the temperature equalizing pipe (2) is attached to the bottom of the mounting hole (12), the other end of the temperature equalizing pipe is close to the opening, and a plug (4) is arranged at the opening of the mounting hole (12) to fix the temperature equalizing pipe (2).

5. A heat pipe radiator according to claim 4, wherein the inner side wall of the temperature equalizing pipe (2) is provided with a wick structure.

6. A heat pipe radiator according to any one of claims 2 to 5, further comprising heat dissipating fins (5), wherein the heat dissipating fins (5) have insertion holes penetrating in the thickness direction, and the heat pipe is connected to the heat dissipating fins (5) through the insertion holes.

7. A heat pipe radiator according to claim 6, wherein a tubular support ring (51) for engaging with the outer sidewall of the heat pipe is disposed at the periphery of the insertion hole, and an included angle between the axis of the support ring (51) and the horizontal plane is equal to the predetermined included angle.

8. A heatpipe heatsink according to claim 6, wherein the heatsink fins (5) are provided with at least one set of insertion holes, the inserting hole group comprises a first inserting hole row and a second inserting hole row, the sum of the number of inserting holes of the first inserting hole row and the second inserting hole row is equal to the number of the mounting grooves (11), the installation grooves (11) are numbered in the sequence from top to bottom, the heat pipes arranged in the installation grooves (11) with even numbers are arranged in the plug holes of the first plug hole row, the heat pipes arranged in the mounting grooves (11) with the odd number are arranged in the plug-in holes of the second plug-in hole row, the transverse section of the heat pipe installed in the first insertion hole row extends towards the direction of the second insertion hole row in the insertion hole group, and the transverse section of the heat pipe installed in the second insertion hole row extends towards the direction of the first insertion hole row in the insertion hole group.

9. A heat pipe radiator according to claim 6 wherein the predetermined included angle is in the range of 0 ° to 10 °.