CN116669401B

CN116669401B - Radiator

Info

Publication number: CN116669401B
Application number: CN202310919249.1A
Authority: CN
Inventors: 牟永斌; 赵秀红
Original assignee: Suzhou Shengrongyuan Electronic Technology Co ltd
Current assignee: Suzhou Shengrongyuan Electronic Technology Co ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2023-10-10
Anticipated expiration: 2043-07-26
Also published as: CN116669401A

Abstract

The invention relates to the technical field of heat dissipation, in particular to a heat radiator, which comprises: a housing having first, second, and third openings communicating with the interior chamber; the capillary tissue is arranged on the wall of the cavity and covers the second and third openings, and the first opening is communicated with the cavity without capillary tissue; the first pipe body and the second pipe body are arranged outside the shell and are provided with two ports, the two ports of the first pipe body are respectively communicated with the first holes and the second holes, the first pipe body is respectively connected with the first holes and the second holes in the same number and in one-to-one correspondence, one port of the second pipe body is communicated with a third hole, the other port is closed or communicated with the other third hole, and the ports of all the second pipe bodies communicated with the third holes are connected with the third holes in the same number and in one-to-one correspondence; a plurality of third openings in parallel communication with one second opening and/or a plurality of second openings in parallel communication with one third opening; a channel is formed between the capillary tissue and the shell between the second and third communicated openings. Three-dimensional heat transfer can be realized.

Description

Radiator

Technical Field

The invention relates to the technical field of heat dissipation, in particular to a radiator.

Background

As electronic components have higher performance, their power consumption has increased, and heat dissipation has become more difficult. Common heat transfer elements include heat pipes and isoplates. The heat conduction mode of the heat pipe is one-dimensional, the heat conduction mode of the temperature equalizing plate is two-dimensional, and the heat is spread on the surface. And one-dimensional or two-dimensional heat transfer has been very difficult to cope with the existing heat dissipation problem of electronic components. There are also cases where heat pipes are used in combination with each Wen Banjie, including both indirect and direct bonding. The heat pipe is indirectly combined with the temperature equalizing plate, namely, the heat pipe is stuck on the surface of the temperature equalizing plate, the heat pipe contacts with the condensation surface of the temperature equalizing plate, heat is firstly transferred to the temperature equalizing plate and then is transferred to the heat pipe by the temperature equalizing plate, and the efficiency is low due to secondary heat exchange. The heat pipe is combined with the uniform Wen Banzhi, so that the capillary core in the heat pipe is required to be connected with the capillary core in the uniform temperature plate, the processing is difficult, the yield is low, and the effect is also not ideal. There is a strong need in the industry for a three-dimensional heat transfer element.

In addition, as the power consumption of the processor chip in the high-performance computing device such as the server is larger and larger, the heat generation is larger and larger, and the heat dissipation problem is more and more prominent. Conventional air-cooled heat sinks occupy only the space above the processor, and now heat is increased, requiring a larger area of fins to be placed, so more space is purposely given in these devices to place the fins, which requires heat transfer elements to be able to pull heat away from the processor chip to a reserved location, thereby deploying the fins, and so the heat transfer distance is increased. However, the longer the heat pipe length is, the larger the heat transfer temperature difference is, the performance is deteriorated, and the actual expansion effect is not ideal.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a heat sink capable of achieving three-dimensional heat transfer.

In order to solve the technical problems, the invention adopts the following technical scheme:

the present invention provides a heat sink comprising: the shell is hollow to form a cavity, and a first opening, a second opening and a third opening which are communicated with the cavity are formed in the shell; the capillary tissue is arranged on the wall of the cavity and covers the second opening and the third opening, and no capillary tissue exists at the first opening, so that the first opening is communicated with the cavity; the first pipe body is arranged outside the shell and is provided with two ports, the two ports of the first pipe body are respectively communicated with the first open pore and the second open pore, and the first pipe body is respectively connected with the first open pore and the second open pore in the same number and in one-to-one correspondence; the second pipe body is arranged outside the shell and is provided with two ports, one port of the second pipe body is communicated with a third opening, the other port of the second pipe body is closed or communicated with the other third opening, and the ports of all the second pipe bodies, which are communicated with the third openings, are connected with the third openings in the same number and in a one-to-one correspondence manner; the plurality of third openings are communicated with one second opening in parallel and/or the plurality of second openings are communicated with one third opening in parallel and/or each second opening is respectively communicated with one third opening; a channel for communicating the second opening and the third opening is formed between the capillary tissue and the shell between the second opening and the third opening which are communicated; the cavity is filled with liquid working medium after being vacuumized.

Preferably, the tube extension between the two ports of the first tube is greater than the tube extension between the two ports of the second tube.

Preferably, the middle part of the first pipe body is bent relative to the two end parts of the first pipe body.

Preferably, the middle part of the first pipe body is bent and extended to the outer side of the side part of the shell relative to the two end parts of the first pipe body.

Preferably, the second tube body is a U-shaped tube with two ports respectively communicated with a third opening and/or a straight tube with one port communicated with the third opening and the other port closed.

Preferably, the capillary tissue comprises a first capillary tissue and a second capillary tissue, the first capillary tissue and the second capillary tissue are locally in direct or indirect contact or connection, the first capillary tissue is arranged at the bottom of the cavity, and the second capillary tissue covers the second opening and the third opening.

Preferably, a third capillary tissue and/or a supporting body are arranged in the cavity, and two ends of the third capillary tissue are respectively contacted or connected with the first capillary tissue and the second capillary tissue, so that the first capillary tissue and the second capillary tissue are indirectly contacted or connected; the top and the bottom of cavity are connected respectively at the both ends of supporter.

Preferably, the third capillary tissue wraps around the support or is spaced apart from the support.

Preferably, the channel is formed between a score groove on the inner wall of the housing and the capillary tissue or between a protrusion on the housing and the capillary tissue.

Preferably, a fourth capillary tissue is arranged in the first tube body and/or the second tube body, the fourth capillary tissue in the first tube body is close to the second opening side and is in contact with or connected with the capillary tissue at the second opening, and the fourth capillary tissue in the second tube body is close to the third opening side and is in contact with or connected with the capillary tissue at the third opening.

Preferably, the inner surface of the first tube body and/or the second tube body is smooth or has a micro-ribbed structure or has a micro-channel structure.

Preferably, the first tube body and/or the second tube body are round tubes or flat tubes or micro-channel tubes or tube bodies with round tubes and flat tubes.

Preferably, the shell is further provided with a fourth opening and a fifth opening which are communicated with the cavity, the fourth opening is free of capillary tissue, the fourth opening is communicated with the cavity, the capillary tissue covers the fifth opening, the outside of the shell is further provided with a third pipe body, the third pipe body is provided with two ports, the two ports of the third pipe body are respectively communicated with the fourth opening and the fifth opening, and the number of the third pipe body, the number of the fourth opening and the number of the fifth opening are respectively the same and are correspondingly connected one by one.

Preferably, the outer surfaces of the first tube body, the second tube body and the third tube body are coated with radiating fins.

Compared with the prior art, the invention has obvious progress:

according to the radiator disclosed by the invention, the first pipe body can be bent, expanded and lengthened, and when the pipe body of the first pipe body is longer in extension length, namely the heat transfer distance is longer, the heat exchange efficiency in the first pipe body can be ensured. When the length of the tube body of the first tube body is longer, the condensed liquid working medium in the first tube body can be more, but the liquid working medium in the first tube body can quickly and timely flow to the second opening under the action of the quick drainage of the second tube body and is adsorbed by the capillary tissue covered by the second opening, and the liquid working medium can not stay on the tube wall of the first tube body for a long time and occupy a larger tube wall area, so that the heat exchange efficiency difference between the larger tube wall area of the first tube body and the environment due to the occupation of the liquid working medium can be avoided, and the heat transfer temperature difference of the first tube body is large, so that the first tube body is longer, but can keep high heat exchange efficiency and small heat transfer temperature difference. Therefore, the radiator of the invention rapidly conducts flow of working medium in the first pipe body by arranging the second pipe body, so that the first pipe body can be expanded and elongated and even bent at a large angle, and the temperature uniformity can be kept, thus realizing three-dimensional heat transfer, well utilizing available space to arrange radiating fins, having stronger radiating capacity and better meeting the requirements of large radiating capacity and space arrangement. When the heat source has large heat dissipation capacity, more working media are filled in the radiator, and more heat dissipation fins are required to be arranged to ensure the heat dissipation effect, the radiator can be adopted to bend, expand and elongate the first pipe body. For the application scene of remote expansion, the radiator has the advantages of small overall heat transfer temperature difference, good temperature uniformity and high space utilization rate.

Drawings

Fig. 1 is a schematic outline view of a first implementation of a radiator according to an embodiment of the present invention.

Fig. 2 is a schematic internal structure of a first embodiment of a radiator according to an embodiment of the present invention.

Fig. 3 is a schematic internal structure of a second implementation of the heat sink according to the embodiment of the present invention.

Fig. 4 is a schematic internal structure of a third embodiment of a radiator according to an embodiment of the present invention.

Fig. 5 is a schematic internal structure of a fourth implementation of the radiator according to the embodiment of the present invention.

Fig. 6 is a schematic internal structure of a fifth implementation of the radiator according to the embodiment of the present invention.

Fig. 7 is a schematic internal structure of a sixth implementation of the radiator according to the embodiment of the present invention.

Fig. 8-10 are three different external views of a radiator according to an embodiment of the invention, which respectively have different first tube bending configurations.

Wherein reference numerals are as follows:

1. shell body

10. Chamber chamber

101. Cover plate

102. Bottom plate

103. Channel

11. First open hole

12. Second open hole

13. Third opening hole

14. Fourth opening

15. Fifth opening hole

2. Capillary tissue

201. First capillary tissue

202. Second capillary tissue

3. First pipe body

4. Second pipe body

5. Third capillary tissue

6. Support body

7. Fourth capillary tissue

8. Filling pipe

9. Third pipe body

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to be limiting.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

Fig. 1 to 10 show an embodiment of the heat sink of the present invention. The heat sink of the present embodiment includes a housing 1, a capillary tissue 2, a first tube 3, and a second tube 4.

Wherein, the interior of the shell 1 is hollow to form a cavity 10, and the shell 1 is provided with a first opening 11, a second opening 12 and a third opening 13 which are communicated with the cavity 10. Preferably, the housing 1 includes a cover plate 101 and a bottom plate 102, the cover plate 101 is disposed on the top side of the bottom plate 102, the outer periphery of the cover plate 101 is connected with the outer periphery of the bottom plate 102 by welding and sealing, and the interior encloses the chamber 10. The cover plate 101 and the base plate 102 may be formed by a stamping and machining process. The material of the case 1 is preferably copper.

The capillary tissue 2 is arranged on the cavity wall of the cavity 10 of the shell 1, the capillary tissue 2 covers the second opening 12 and the third opening 13 on the shell 1, the first opening 11 on the shell 1 is free of capillary tissue 2, and the first opening 11 is communicated with the cavity 10 of the shell 1. Preferably, the capillary tissue 2 includes a first capillary tissue 201 and a second capillary tissue 202, the first capillary tissue 201 and the second capillary tissue 202 are partially directly or indirectly contacted or connected, the first capillary tissue 201 is disposed at the bottom of the chamber 10, and the second capillary tissue 202 covers the second opening 12 and the third opening 13.

The first pipe body 3 is arranged outside the shell 1, the first pipe body 3 is provided with two ports and a pipe internal passage communicated with the two ports of the first pipe body 3, the two ports of the first pipe body 3 are respectively communicated with the first open hole 11 and the second open hole 12, and the first pipe body 3 is respectively connected with the first open hole 11 and the second open hole 12 in the same number and in one-to-one correspondence. The two ports of the first pipe body 3 are connected, fixed and communicated with the first opening 11 and the second opening 12 preferably through welding.

The second pipe body 4 is arranged outside the shell 1, the second pipe body 4 is provided with two ports and a pipe internal passage communicated with the two ports of the second pipe body 4, and one port of the second pipe body 4 is communicated with a third opening 13; the other port of the second tube body 4 may be located outside the housing 1 and closed (see fig. 6), or the other port of the second tube body 4 may also communicate with another third opening 13 (see fig. 2 to 7). All the ports of the second pipe body 4 communicating with the third openings 13 are connected in the same number and in one-to-one correspondence with the third openings 13. The port of the second tubular body 4 communicating with the third opening 13 is preferably fixed to and communicates with the third opening 13 by a welded connection.

The radiator of the present embodiment may include one or more first tubes 3 and one or more second tubes 4, and the number of the first openings 11, the second openings 12, and the third openings 13 on the housing 1 corresponds to the number of the first tubes 3 and the second tubes 4, respectively. The port of the first pipe body 3 communicating with the second opening 12 communicates with the port of the second pipe body 4 communicating with the third opening 13, the first communication mode is that the port of the first pipe body 3 communicating with the second opening 12 communicates with the ports of the plurality of second pipe bodies 4 communicating with the third opening 13 (see fig. 6), the second communication mode is that the ports of the plurality of first pipe bodies 3 communicating with the second opening 12 communicate with the ports of the one second pipe body 4 communicating with the third opening 13 (see fig. 2 and 3), and the third communication mode is that the port of the one first pipe body 3 communicating with the second opening 12 communicates with the port of the one second pipe body 4 communicating with the third opening 13 (see fig. 4, 5 and 7), and any two or three communication modes of the three communication modes can coexist at the same time. Thus, in the present embodiment, the plurality of third openings 13 are in parallel communication with one second opening 12 and/or the plurality of second openings 12 are in parallel communication with one third opening 13 and/or each second opening 12 is in communication with one third opening 13 respectively on the housing 1. That is, the communication form of the third opening 13 and the second opening 12 is a combination of any one or more of the following communication forms: the plurality of third openings 13 are in parallel communication with one second opening 12, the plurality of second openings 12 are in parallel communication with one third opening 13, and each second opening 12 is respectively in communication with one third opening 13.

When two ports of the second pipe body 4 are respectively communicated with a third opening 13, preferably, the two ports of the second pipe body 4 are not communicated, that is, the two ports of the second pipe body 4 are not communicated with the two third openings 13 respectively communicated with each other; the two third openings 13 respectively connected to two ports of the second tube body 4 may be connected to a second opening 12 connected to one port of the same first tube body 3, or one third opening 13 connected to one port of the second tube body 4 may be connected to the second openings 12 connected to one port of one or more first tube bodies 3, the other third opening 13 connected to the other port of the second tube body 4 may be connected to the second openings 12 connected to one port of the other one or more first tube bodies 3 (see fig. 4), and the other third opening 13 connected to the other port of the second tube body 4 may be covered by the capillary tissue 2 at the third opening 13 (see fig. 2, 3, 5, 6 and 7).

A passage 103 for communicating the second opening 12 with the third opening 13 is formed between the capillary tissue 2 and the housing 1 between the second opening 12 and the third opening 13 which are communicated. Preferably, the channel 103 may be formed between the notch on the inner wall of the housing 1 and the capillary tissue 2 (see fig. 3 to 7), or the channel 103 may be formed between the protrusion on the housing 1 and the capillary tissue 2 (see fig. 1 and 2). In the present embodiment, the channel 103 is formed between the second capillary 202 and the housing 1.

Thus, the housing 1 is connected to each of the first pipe body 3 and the second pipe body 4, and the chamber 10 of the housing 1 is communicated with the passage in the pipe of each of the first pipe body 3 and the second pipe body 4 through the first opening 11 and the passage 103, thereby forming a closed space. The cavity 10 of the shell 1 is vacuumized and filled with liquid working medium for heat absorption, vaporization, heat release and condensation, and forms circulation in the closed space under the action of the capillary tissue 2, so that the heat dissipation effect is realized. Preferably, the shell 1 is provided with a filling pipe 8, and the filling pipe 8 is communicated with the cavity 10 of the shell 1 and is used for vacuumizing the cavity 10 of the shell 1 and filling liquid working medium into the cavity 10 of the shell 1.

The working principle of the radiator of the embodiment is as follows: the cavity 10 of the shell 1 is vacuumized through the filling pipe 8, then liquid working medium is filled, and then the opening end of the filling pipe 8 is welded and sealed. The liquid working medium filled in the cavity 10 of the shell 1 wets the capillary tissue 2, in particular the first capillary tissue 201 arranged at the bottom of the cavity 10. The heat source is contacted with the bottom (bottom plate 102) of the shell 1, and the liquid working medium in the first capillary tissue 201 in the capillary tissue 2 absorbs the heat of the heat source and is vaporized into a vapor working medium. Since the second capillary tissue 202 in the capillary tissue 2 is covered at the second opening 12 and the third opening 13, the vapor state working substance cannot penetrate, so that the vapor state working substance is forced to enter the first tube body 3 from the first opening 11 of the capillary tissue 2. The vapor state working medium flows in the first pipe body 3 and gradually releases heat outwards, so that part of the vapor state working medium is condensed into liquid state working medium. Since the vapor state working substance is generated at the first capillary structure 201 in the chamber 10 and flows forward from the first opening 11 into the first tube body 3, a pressure difference is generated along with the generation and flow of the vapor state working substance. The condensed liquid working medium in the first tube body 3 flows along the tube wall of the first tube body 3 to the second opening 12 under the action of the pressure difference and gravity, is absorbed by the second capillary tissue 202 covered by the second opening 12 when flowing to the second opening 12, infiltrates the second capillary tissue 202 and spreads along the second capillary tissue 202, and returns to the first capillary tissue 201. Uncondensed vapor phase working medium in the first pipe body 3 enters the third hole 13 communicated with the second hole 12 from the channel 103, and then enters the second pipe body 4. The working pressure of the working medium in the second pipe body 4 is lower than the working pressure of the working medium in the first pipe body 3, the working medium in the first pipe body 3 is rapidly drained, and the vapor working medium in the first pipe body 3 can flow to the second pipe body 4 through the channel 103, so that the liquid working medium in the first pipe body 3 can be rapidly drained to the second opening 12. The working medium in the channel 103 is in a vapor-liquid two-phase state, wherein the liquid working medium is absorbed by the second capillary tissue 202 in the process of flowing along the channel 103 and finally returns to the first capillary tissue 201, and the vapor working medium enters the second pipe body 4 through the third opening 13. The vapor working medium entering the second pipe body 4 flows in the second pipe body 4 and continuously releases heat outwards, and finally is totally condensed into liquid working medium. The condensed liquid working medium in the second pipe body 4 flows back along the pipe wall of the second pipe body 4, is absorbed by the second capillary tissue 202 covered by the third opening 13 when flowing back to the third opening 13, infiltrates the second capillary tissue 202 and spreads along the second capillary tissue 202, and returns to the first capillary tissue 201. Thereby forming unidirectional circulation of the working medium, and realizing heat absorption of the heat source and heat dissipation of the absorbed heat into the environment through unidirectional circulation of the working medium.

In the radiator of this embodiment, the first tube body 3 may be bent, expanded and elongated, so that when the tube body of the first tube body 3 extends longer, that is, the heat transfer distance is longer, the heat exchange efficiency in the first tube body 3 can be ensured. When the length of the tube body extension of the first tube body 3 is longer, the condensed liquid working medium in the first tube body 3 can be more, but under the effect of the rapid drainage of the second tube body 4, the liquid working medium in the first tube body 3 can flow to the capillary tissue 2 (the second capillary tissue 202) covered by the second opening 12 in time rapidly, and can not stay on the tube wall of the first tube body 3 for a long time and occupy a larger tube wall area, so that the heat transfer temperature difference of the first tube body 3 caused by the heat transfer efficiency difference between the larger tube wall area of the first tube body 3 and the environment because of being occupied by the liquid working medium is avoided, and the first tube body 3 can keep very high heat transfer efficiency and very small heat transfer temperature difference although being longer. Therefore, the radiator of the embodiment rapidly conducts flow to the working medium in the first pipe body 3 by arranging the second pipe body 4, so that the first pipe body 3 can be expanded and elongated and even bent at a large angle, and the temperature uniformity can be kept, thus three-dimensional heat transfer can be realized, the available space can be well utilized to arrange the radiating fins, the radiating capacity is stronger, and the requirements of large radiating capacity and space arrangement can be better met. When the heat source heat dissipation capacity is very big, the radiator is filled with more working mediums, and more radiating fins are required to be arranged to ensure the heat dissipation effect, the radiator of the embodiment can be adopted to bend, expand and elongate the first pipe body 3. For the application scene of remote expansion, the radiator of the embodiment has the advantages of small overall heat transfer temperature difference, good temperature uniformity and high space utilization rate.

In this embodiment, the ratio of the heat dissipation capacity of the first pipe body 3 and the second pipe body 4 should be designed according to specific applications, so that when the heat balance of the heat sink is guaranteed, the working pressure of the working medium in the second pipe body 4 is lower than the working pressure of the working medium in the first pipe body 3, so that the working medium in the first pipe body 3 is led to the second pipe body 4 through the channel 103.

In the radiator of the present embodiment, preferably, the tube extension length between the two ends of the first tube 3 is longer than the tube extension length between the two ends of the second tube 4. In the radiator of this embodiment, the heat release and condensation of the vapor state working medium is mainly completed in the longer first tube body 3, and the heat release and condensation of the remaining part of vapor state working medium is completed in the second tube body 4, and the second tube body 4 mainly rapidly drains the working medium in the first tube body 3 and also dissipates the heat of the remaining part of vapor state working medium which is not condensed in the first tube body 3 to condense the same.

In the radiator of the present embodiment, preferably, the middle portion of the first tube body 3 is bent with respect to both end portions of the first tube body 3. The two end portions of the first pipe body 3 are portions near the two ends of the two ports of the first pipe body 3, and the middle portion of the first pipe body 3 is a portion located between the two end portions of the first pipe body 3.

Preferably, in the present embodiment, the middle portion of the first tube body 3 is bent and extended to the outer side of the side portion of the housing 1 relative to the two end portions of the first tube body 3, so that the middle portion of the first tube body 3 is extended far to the outer side of the housing 1.

In the radiator of the present embodiment, the middle portion of the first tube 3 is not limited to a shape bent with respect to the two end portions of the first tube 3. Fig. 1, 8, 9 and 10 illustrate several cases in which the radiator of the present embodiment has different first tube bending modes, respectively. Referring to fig. 1 and 8, the first tube 3 may be a U-shaped tube with two bent ends, where two end ports of the U-shaped tube are respectively connected to the first opening 11 and the second opening 12, and the middle of the U-shaped tube is bent, expanded and elongated, preferably, two end portions of the first tube 3 vertically extend upwards outside the top of the housing 1, and the middle of the first tube 3 is bent horizontally relative to two end portions of the first tube 3, and is extended in a horizontal posture toward the outside of the housing 1. Further, referring to fig. 9, in a state that the middle part of the first pipe body 3 is bent horizontally with respect to both end parts of the first pipe body 3, the pipe body of the middle part of the first pipe body 3 may be further bent one or more times on the horizontal plane. In addition, referring to fig. 10, the first pipe body 3 may be disposed at a side portion of the housing 1, two ends of the first pipe body 3 are respectively connected to a top portion and a side portion of the housing 1, and a middle portion of the first pipe body 3 is bent relative to two end portions of the first pipe body 3, at this time, a pipe body of the middle portion of the first pipe body 3 has two portions that are parallel and synchronously bent in a top-bottom direction.

Referring to fig. 1 to 9, the first, second and third openings 11, 12 and 13 on the housing 1 may be all provided at the top of the housing 1, and the first and second tubes 3 and 4 are all provided at the outside of the top of the housing 1. Referring to fig. 10, the casing 1 may have a first opening 11 or a second opening 12 formed in a side portion of the casing 1, such that the first pipe 3 is formed in a side portion of the casing 1, and two ends of the first pipe 3 are respectively connected to a top portion and a side portion of the casing 1.

In the radiator of the present embodiment, preferably, one form of the second tube body 4 is a U-shaped tube with two ports respectively connected to a third opening 13, and the other form of the second tube body 4 is a straight tube with one port connected to a third opening 13 and the other port closed, and the two forms of the second tube body 4 may coexist (see fig. 6).

Referring to fig. 1 to 9, specifically, in the present embodiment, the first opening 11, the second opening 12, and the third opening 13 are provided on the cover plate 101 of the housing 1 so as to be provided on the top of the housing 1; the first pipe body 3 and the second pipe body 4 are arranged on the outer side of the cover plate 101 of the shell 1, and are arranged on the outer side of the top of the shell 1; the first capillary tissue 201 is fixed on the bottom plate 102 of the housing 1, thereby being fixed at the bottom of the chamber 10 of the housing 1, and the bottom plate 102 of the housing 1 is in contact with the heat source; the second capillary tissue 202 is fixed on the cover plate 101 of the housing 1 so as to be fixed on the top of the chamber 10 of the housing 1, and the second capillary tissue 202 avoids the first opening 11, covers the second opening 12 and the third opening 13, separates the second opening 12 and the third opening 13 from the chamber 10 of the housing 1 by the second capillary tissue 202, and enables the first opening 11 to penetrate the chamber 10 of the housing 1, and covers other parts of the top of the chamber 10 of the housing 1 except the first opening 11 except the second opening 12 and the third opening 13; a passage 103 between the second opening 12 and the third opening 13, which are in communication, is formed between the second capillary tissue 202 and the cover 101 of the housing 1.

In this embodiment, the capillary tissue 2 (the first capillary tissue 201 and the second capillary tissue 202) may be any one or more of a mesh, a metal foam, a metal felt, a fiber bundle, and a powder porous structure, and the first capillary tissue 201 and the second capillary tissue 202 may be the same structure or different structures.

The first and second capillary tissues 201 and 202 may be locally directly contacted or connected. Preferably, the first capillary tissue 201 is provided with a portion protruding toward the second capillary tissue 202 to contact or connect the second capillary tissue 202, or the second capillary tissue 202 is provided with a portion protruding toward the first capillary tissue 201 to contact or connect the first capillary tissue 201, or both the first capillary tissue 201 and the second capillary tissue 202 are provided with portions protruding toward each other to contact or connect each other. The first capillary 201 and the second capillary 202 may be connected by sintering.

The first capillary tissue 201 and the second capillary tissue 202 may also be in local indirect contact or connection. Preferably, a third capillary tissue 5 may be disposed in the chamber 10 of the housing 1, and both ends of the third capillary tissue 5 are respectively contacted or connected with the first capillary tissue 201 and the second capillary tissue 202, so that the first capillary tissue 201 and the second capillary tissue 202 are indirectly contacted or connected. The liquid working medium in the first tube body 3 and the second tube body 4 which are returned to the second capillary tissue 202 is returned to the first capillary tissue 201 through the third capillary tissue 5. The third capillary 5 may be any one or more of a mesh, a metal foam, a metal felt, a fiber bundle, a powder porous structure.

Preferably, the cavity 10 of the shell 1 can be provided with a supporting body 6, and two ends of the supporting body 6 are respectively connected with the top and the bottom of the cavity 10, so that the strength of the shell 1 is enhanced. In this embodiment, the two ends of the supporting body 6 are respectively connected to the cover plate 101 and the bottom plate 102 of the housing 1.

When the third capillary tissue 5 and the support 6 are simultaneously disposed in the chamber 10 of the housing 1, the third capillary tissue 5 may wrap the support 6, or the third capillary tissue 5 may be disposed at a distance from the support 6, or both the two forms may coexist (see fig. 6).

In the radiator of the present embodiment, preferably, the fourth capillary tissue 7 may be disposed in the first tube body 3, where the fourth capillary tissue 7 in the first tube body 3 is close to the second opening 12 and contacts or connects with the capillary tissue 2 at the second opening 12, so as to help the liquid working medium in the first tube body 3 flow back to the capillary tissue 2 at the second opening 12. Preferably, a fourth capillary tissue 7 may be disposed in the second tube body 4, and the fourth capillary tissue 7 in the second tube body 4 is close to the third opening 13 and is in contact with or connected with the capillary tissue 2 at the third opening 13, so as to facilitate the liquid working medium in the second tube body 4 to flow back to the capillary tissue 2 at the third opening 13. In this embodiment, the fourth capillary tissue 7 in the first tube 3 is in contact with or connected to the second capillary tissue 202 at the second opening 12, and the fourth capillary tissue 7 in the second tube 4 is in contact with or connected to the second capillary tissue 202 at the third opening 13.

In the radiator of the present embodiment, preferably, the inner surface of the first tube body 3 is smooth or has a micro-rib structure or has a micro-channel structure, and the inner surface of the first tube body 3 has a micro-rib structure or has a micro-channel structure to form a certain capillary force, which helps the liquid working medium in the first tube body 3 to flow back. Preferably, the inner surface of the second pipe body 4 is smooth or has a micro-rib structure or has a micro-channel structure, and the inner surface of the second pipe body 4 has a micro-rib structure or has a micro-channel structure, so that a certain capillary force can be formed, and the capillary force can help the liquid working medium in the second pipe body 4 to flow back.

In the radiator of this embodiment, preferably, the first tube body 3 is a circular tube, a flat tube, a micro-channel tube, or a tube body with a circular tube and a flat tube, and the flat tube or the micro-channel tube structure of the first tube body 3 can form a certain capillary force, and the capillary force is helpful for the backflow of the liquid working medium in the first tube body 3. Preferably, the second tube body 4 is a round tube or a flat tube or a micro-channel tube or a tube body with a round tube and a flat tube, and the flat tube or the micro-channel tube structure of the second tube body 4 can form a certain capillary force, and the capillary force is helpful for the backflow of the liquid working medium in the second tube body 4.

Referring to fig. 7, further, the heat sink of the present embodiment may further include a third tube 9, where the third tube 9 is disposed outside the housing 1, a fourth opening 14 and a fifth opening 15 that are communicated with the chamber 10 are further disposed on the housing 1, no capillary tissue 2 is disposed at the fourth opening 14, so that the fourth opening 14 is communicated with the chamber 10, the capillary tissue 2 covers the fifth opening 15, specifically, the second capillary tissue 202 covers the fifth opening 15, the third tube 9 has two ports and an in-tube passage that communicates with two ports of the third tube 9, two ports of the third tube 9 are respectively communicated with the fourth opening 14 and the fifth opening 15, and the third tube 9 and the fourth opening 14 and the fifth opening 15 are respectively connected in the same number and one-to-one correspondence. The two ports of the third pipe body 9 are preferably fixed to and communicated with the fourth opening 14 and the fifth opening 15 by welding. The third tube 9 is independent of the first tube 3 and the second tube 4.

The effect of the third pipe body 9 is basically the same as that of the first pipe body 1, the vaporous working medium in the chamber 10 can be partially forced to enter the third pipe body 9 from the fourth opening 14 of the hairless tissue 2, flows in the third pipe body 9 and gradually releases heat outwards, is condensed into liquid working medium and flows to the fifth opening 15, is absorbed by the second capillary tissue 202 covered by the fifth opening 15, wets the second capillary tissue 202 and spreads along the second capillary tissue 202, and returns to the first capillary tissue 201, thereby playing the role of assisting the exothermic condensation of the vaporous working medium. The difference is that the third tube body 9 is not communicated with the second tube body 4, and no drainage is carried out on the second tube body 4, so that the third tube body 9 is not bent, expanded and elongated. Preferably, the third tube body 9 is a U-shaped tube, and two ports of the U-shaped tube are respectively communicated with the fourth opening 14 and the fifth opening 15.

The number of the third tubes 9 is not limited, and one or more may be provided (see fig. 9 and 10).

In the radiator of the present embodiment, preferably, the outer surfaces of the first tube body 3, the second tube body 4 and the third tube body 9 are coated with heat dissipation fins (not shown in the figure), heat of a heat source can be transferred to each of the first tube body 3, the second tube body 4 and the third tube body 9 by circulation of working medium, and the heat source is transferred to the heat dissipation fins by each of the first tube body 3, the second tube body 4 and the third tube body 9, and finally dissipated to the environment.

In this embodiment, fig. 1 to 7 illustrate six specific implementations of the heat sink of this embodiment.

Fig. 1 and 2 show a first implementation manner of a radiator of the present embodiment, in the first implementation manner, a housing 1 includes a cover plate 101 and a bottom plate 102 that are hermetically connected to form a chamber 10, the cover plate 101 is disposed on a top side of the bottom plate 102, a filling pipe 8 is disposed on one side of the cover plate 101, and a first opening 11, a second opening 12, and a third opening 13 are all disposed on the cover plate 101. The chamber 10 is internally provided with a first capillary tissue 201, a second capillary tissue 202, a third capillary tissue 5 and a supporting body 6, wherein the first capillary tissue 201 is fixed on the bottom plate 102, the second capillary tissue 202 is fixed on the cover plate 101 and covers the second opening 12 and the third opening 13, meanwhile, the second capillary tissue 202 also covers other parts except the first opening 11 of the cover plate 101, the first opening 11 is free of the second capillary tissue 202, the first opening 11 is communicated with the chamber 10, two ends of the third capillary tissue 5 are respectively contacted or connected with the first capillary tissue 201 and the second capillary tissue 202, two ends of the supporting body 6 are respectively connected with the cover plate 101 and the bottom plate 102, and the third capillary tissue 5 wraps the supporting body 6. The two second openings 12 are communicated with a third opening 13 in parallel, specifically, one port of the two first pipe bodies 3 is respectively communicated with a first opening 11, and the other port of the two first pipe bodies 3 is respectively communicated with a second opening 12; one port of the second pipe body 4 is communicated with a third opening 13, and two second openings 12 are respectively communicated with the third opening 13 through a channel 103; the other port of the second tube body 4 communicates with the other third opening 13 and is covered with the second capillary tissue 202 at the third opening 13. The channel 103 is formed between the protrusion on the cover plate 101 and the second capillary tissue 202. The first tube body 3 is provided with fourth capillary tissues 7 at the side close to the second opening 12, and the fourth capillary tissues 7 are contacted or connected with the second capillary tissues 202 at the second opening 12. The first pipe body 3 is a U-shaped pipe with bent middle parts and opposite end parts, the two end parts of the first pipe body 3 extend vertically upwards outside the cover plate 101, the middle part of the first pipe body 3 is bent horizontally relative to the two end parts of the first pipe body 3, and the two end parts are respectively extended in a horizontal posture towards the outer sides of the two sides of the shell 1; the second tube body 4 is a U-shaped tube. In the first embodiment, the working media in the two first pipe bodies 3 are led to the same port of the second pipe body 4, so that the working media in the second pipe bodies 4 integrally flow in a unidirectional manner. In the first embodiment, the arrangement positions of the first opening 11, the second opening 12 and the third opening 13 on the cover plate 101, that is, the arrangement positions of the first pipe body 3 and the second pipe body 4 on the cover plate 101 are not limited, and the first pipe body, the second pipe body and the second pipe body can be arranged randomly according to the application scene, so that the space can be used flexibly and effectively, and the optimal space utilization rate and heat dissipation effect can be achieved; the number of the first openings 11, the second openings 12 and the third openings 13, that is, the number of the first pipe body 3 and the second pipe body 4 is not limited to those shown in fig. 1 and 2, and may be designed according to the application scene.

Fig. 3 shows a second implementation of the heat sink according to the present embodiment, which is substantially the same as the first implementation described above, and the difference is that, in the second implementation, the channel 103 is formed between the notch on the inner wall of the cover plate 101 and the second capillary structure 202; a fourth capillary tissue 7 is provided in the second tube body 4 at a side close to the port side (i.e., a side close to the third opening 13 where the port communicates) where the second tube body 4 is covered with the second capillary tissue 202, and the fourth capillary tissue 7 is in contact with or connected to the second capillary tissue 202 at the third opening 13.

Fig. 4 shows a third implementation manner of the radiator according to the present embodiment, which is substantially the same as the first implementation manner, and is not repeated, wherein in the third implementation manner, each second opening 12 is respectively communicated with one third opening 13, specifically, two ports of the second pipe body 4 are respectively communicated with one third opening 13, and two third openings 13 are respectively communicated with two second openings 12 through a channel 103; the channel 103 is formed between the notch on the inner wall of the cover plate 101 and the second capillary tissue 202; the second tube 4 is provided with fourth capillary tissues 7 on the sides close to the two third openings 13, and the fourth capillary tissues 7 are contacted or connected with the second capillary tissues 202 at the third openings 13. In the third embodiment, the working media in the two first pipe bodies 3 are respectively led to two ports of the second pipe body 4, so that the working media in the second pipe body 4 are in a vapor-liquid bidirectional mixed flow.

Fig. 5 shows a fourth implementation manner of the radiator of the present embodiment, which is substantially the same as the first implementation manner described above, and is not repeated, except that in the fourth implementation manner, each second opening 12 is respectively communicated with one third opening 13, specifically, two ports of the first tube body 3 are respectively communicated with the first opening 11 and the second opening 12, one port of the second tube body 4 is communicated with one third opening 13, the other port of the second tube body 4 is communicated with the other third opening 13 and is covered by the second capillary tissue 202 at the third opening 13, and the second opening 12 communicated with one port of the first tube body 3 is communicated with the third opening 13 communicated with one port of the second tube body 4 through the channel 103, so that the first tube body 3 and the second tube body 4 are correspondingly communicated one by one; the channel 103 is formed between the score groove on the inner wall of the cover plate 101 and the second capillary tissue 202.

Fig. 6 shows a fifth implementation manner of the radiator according to the present embodiment, which is substantially the same as the first implementation manner, and is not repeated, and is different in that, in the fifth implementation manner, two third openings 13 are in parallel connection with one second opening 12, specifically, two ports of the first tube body 3 are respectively connected to the first opening 11 and the second opening 12; one second tube body 4 is a U-shaped tube, one port of the second tube body 4 is communicated with the first third opening 13, and the other port of the second tube body 4 is communicated with the second third opening 13 and is covered by the second capillary tissue 202 at the second third opening 13; the other second pipe body 4 is a straight pipe, one port of the second pipe body 4 is communicated with a third opening 13, and the other port of the second pipe body 4 is closed; the first third opening 13 and the third opening 13 are respectively in communication with the second opening 12 communicating with one port of the first tubular body 3 via the passage 103. The channel 103 is formed between the notch on the inner wall of the cover plate 101 and the second capillary tissue 202; the chamber 10 is provided with a third capillary tissue 5 and a supporting body 6 which are arranged at intervals besides the third capillary tissue 5 wrapping the supporting body 6. In the fifth embodiment, the two second pipes 4 simultaneously drain the working fluid in the first pipe 3, so that the working fluid in the first pipe 3 is split into the two second pipes 4.

Fig. 7 shows a sixth implementation manner of the radiator according to this embodiment, which is substantially the same as the fourth implementation manner described above, and is not repeated, where the difference is that, in the sixth implementation manner, a third tube body 9 is further provided, the third tube body 9 is independent of the first tube body 3 and the second tube body 4, two ends of the third tube body 9 are respectively communicated with the fourth opening 14 and the fifth opening 15, the fourth opening 14 and the fifth opening 15 are both disposed on the cover plate 101, the second capillary tissue 202 covers the fifth opening 15, the fourth opening 14 is free of the second capillary tissue 202, and the fourth opening 14 is communicated with the chamber 10. The number of the fourth openings 14 and the fifth openings 15, that is, the number of the third pipe body 9 is not limited to that shown in fig. 7, and may be designed according to the application scene. The arrangement positions of the first opening 11, the second opening 12, the third opening 13, the fourth opening 14 and the fifth opening 15 on the cover plate 101, that is, the arrangement positions of the first pipe body 3, the second pipe body 4 and the third pipe body 9 on the cover plate 101 are not limited, the first pipe body, the second pipe body 4 and the third pipe body 9 can be arranged randomly according to the application scene, the space can be used flexibly and effectively, and the optimal space utilization rate and the optimal heat dissipation effect can be achieved.

Of course, the specific form of the radiator of the present embodiment is not limited to the above six embodiments, and may be flexibly designed and arranged according to the application scenario.

The bending form of the first tube body 3 in the radiator of the embodiment is not limited to that shown in fig. 1, 8, 9 and 10, and can be flexibly designed and arranged according to the application scene.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.

Claims

1. A heat sink, comprising:

a housing (1) with a hollow interior to form a chamber (10), wherein the housing (1) is provided with a first opening (11), a second opening (12) and a third opening (13) which are communicated with the chamber (10);

a capillary tissue (2) arranged on the wall of the chamber (10) and covering the second opening (12) and the third opening (13), wherein the capillary tissue (2) is not arranged at the first opening (11), so that the first opening (11) is communicated with the chamber (10);

the first pipe body (3) is arranged outside the shell (1), the first pipe body (3) is provided with two ports, the two ports of the first pipe body (3) are respectively communicated with the first opening (11) and the second opening (12), and the first pipe body (3) is respectively connected with the first opening (11) and the second opening (12) in the same number and in a one-to-one correspondence manner;

The second pipe body (4) is arranged outside the shell (1), the second pipe body (4) is provided with two ports, one port of the second pipe body (4) is communicated with one third opening (13), the other port of the second pipe body (4) is closed or communicated with the other third opening (13), and all the ports of the second pipe body (4) communicated with the third openings (13) are connected with the third openings (13) in the same number and in a one-to-one correspondence manner;

-a plurality of said third openings (13) are in parallel communication with one of said second openings (12) and/or a plurality of said second openings (12) are in parallel communication with one of said third openings (13) and/or each of said second openings (12) is in respective communication with one of said third openings (13);

a channel (103) for communicating the second opening (12) with the third opening (13) is formed between the capillary tissue (2) and the shell (1) and between the second opening (12) and the third opening (13) are communicated;

the chamber (10) is filled with liquid working medium after being vacuumized;

working medium's pressure ratio in second body (4) is lower than working pressure of working medium in first body (3), second body (4) are right working medium in first body (3) plays quick drainage's effect, make uncondensed vapour state working medium in first body (3) warp passageway (103) to second body (4) flows, so, liquid working medium in first body (3) is by quick drainage extremely second trompil (12) department is adsorbed by capillary tissue (2) that second trompil (12) department covered.

2. The radiator according to claim 1, characterized in that the tube extension between the two ports of the first tube (3) is greater than the tube extension between the two ports of the second tube (4).

3. The radiator according to claim 1, characterized in that the middle part of the first tube body (3) is bent with respect to the two end parts of the first tube body (3).

4. A radiator according to claim 3, wherein the middle part of the first tube body (3) is folded and extended to the outside of the side part of the housing (1) with respect to the both end parts of the first tube body (3).

5. The radiator according to claim 1, wherein the second tube body (4) is a U-shaped tube with two ports respectively connected to one third opening (13) and/or a straight tube with one port connected to one third opening (13) and the other port closed.

6. The heat sink according to claim 1, wherein the capillary tissue (2) comprises a first capillary tissue (201) and a second capillary tissue (202), the first capillary tissue (201) and the second capillary tissue (202) being locally in direct or indirect contact or connection, the first capillary tissue (201) being provided at the bottom of the chamber (10), the second capillary tissue (202) covering the second aperture (12) and the third aperture (13).

7. The heat sink according to claim 6, wherein a third capillary tissue (5) and/or a support body (6) are provided in the chamber (10), and both ends of the third capillary tissue (5) are respectively contacted or connected with the first capillary tissue (201) and the second capillary tissue (202), so that the first capillary tissue (201) and the second capillary tissue (202) are indirectly contacted or connected; the two ends of the supporting body (6) are respectively connected with the top and the bottom of the cavity (10).

8. The heat sink according to claim 7, characterized in that the third capillary tissue (5) surrounds the support body (6) or is arranged at a distance from the support body (6).

9. The heat sink according to claim 1, characterized in that the channel (103) is formed between a score groove on the inner wall of the housing (1) and the capillary tissue (2) or between a protrusion on the housing (1) and the capillary tissue (2).

10. The heat sink according to claim 1, characterized in that a fourth capillary tissue (7) is provided in the first tube body (3) and/or the second tube body (4), the fourth capillary tissue (7) in the first tube body (3) being adjacent to the second opening (12) side and being in contact or connection with the capillary tissue (2) at the second opening (12), the fourth capillary tissue (7) in the second tube body (4) being adjacent to the third opening (13) side and being in contact or connection with the capillary tissue (2) at the third opening (13).

11. The heat sink according to claim 1, characterized in that the inner surface of the first tube body (3) and/or the second tube body (4) is smooth or has a micro-ribbed structure or has a micro-channel structure.

12. The radiator according to claim 1, characterized in that the first tube (3) and/or the second tube (4) are round tubes or flat tubes or microchannel tubes or partly round tubes, partly flat tubes.

13. The radiator according to claim 1, wherein a fourth opening (14) and a fifth opening (15) which are communicated with the cavity (10) are further arranged on the shell (1), no capillary tissue (2) is arranged at the fourth opening (14), the fourth opening (14) is communicated with the cavity (10), the capillary tissue (2) covers the fifth opening (15), a third pipe body (9) is further arranged outside the shell (1), the third pipe body (9) is provided with two ports, two ports of the third pipe body (9) are respectively communicated with the fourth opening (14) and the fifth opening (15), and the number of the third pipe body (9) is respectively the same as that of the fourth opening (14) and the fifth opening (15) and is correspondingly connected one by one.

14. The radiator according to claim 13, characterized in that the outer surfaces of the first tube body (3), the second tube body (4) and the third tube body (9) are provided with heat radiating fins.