CN214950787U

CN214950787U - Heat pipe structure

Info

Publication number: CN214950787U
Application number: CN202121003261.0U
Authority: CN
Inventors: 刘汉敏
Original assignee: Asia Vital Components Shenzhen Co Ltd
Current assignee: Asia Vital Components Shenzhen Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-11-30
Anticipated expiration: 2031-05-11

Abstract

The utility model provides a heat pipe structure contains: the tube body is provided with a first end, a second end and an airtight cavity, the wall surface of the tube body is provided with at least one capillary structure layer, a working fluid is filled in the tube body, any one of the first end and the second end of the tube body is arranged in a mode of being vertical to a horizontal plane, the first end and the second end are respectively positioned at the upper end and the lower end of the tube body, which is in contact with the horizontal plane, is provided with an expansion space which is used as an ice molecule release space after the working fluid is frozen.

Description

Heat pipe structure

Technical Field

The present invention relates to a heat pipe structure, and more particularly to a heat pipe structure having a space for releasing frozen ice molecules.

Background

The traditional heat pipe has a hollow shell (pipe) body, and the capillary wick and the working fluid (water, coolant, methanol, acetone, liquid ammonia, etc.) are arranged inside the shell (pipe), the hollow shell (pipe) body is mostly made of copper, aluminum, etc. materials at present, because the working fluid inside the hollow shell (pipe) body generates a phase-change latent heat mechanism to conduct heat.

However, the heat pipe made of Copper and Water (Copper tube + Pure Water) is currently used in the field of heat dissipation of electronic products, and because Copper has better heat conductivity, the working liquid has better latent heat, and can be used in most normal environments; however, it still suffers from the limitation of application conditions, such as outdoor (5G, 6G base station, outdoor photovoltaic power IGBT heat dissipation, vehicle or any outdoor application requiring heat dissipation), icing problem of working fluid at 0 ℃ of ambient temperature, and influence of icing molecular force on structural strength.

When the heat pipe level sets up, and run into working fluid and produce the phenomenon of icing, the ice molecule takes place the inflation of inflation extrusion heat pipe wall, make the heat pipe take place to warp, another, if set up the application with the heat pipe with upright mode, working fluid receives the bottom that gravity influences and gathers in the heat pipe lower extreme, work environment is less than the inside working fluid of heat pipe when 0 degree icing again, and the ice molecule will produce the inflation and then prop the inflation with this heat pipe wall, will prop the explosion heat pipe when serious, make the heat pipe produce and break and lose the vacuum nature and make working fluid produce the seepage.

Therefore, it is the first objective of those skilled in the art to provide a method for properly preventing the internal working fluid from freezing at low temperature, and further damaging the vapor-liquid circulation inside the heat pipe.

SUMMERY OF THE UTILITY MODEL

Accordingly, to effectively solve the above problems, the present invention provides a heat pipe structure, which solves the problem that when a heat pipe is vertically installed (under the influence of gravity), the working fluid filled in the heat pipe freezes at zero degrees, and the molecular release force of the ice at the lowest part expands the bottommost part of the pipe body, thereby providing an ice molecular release force space.

To achieve the above object, the present invention provides a heat pipe structure, comprising:

the tube body is provided with a first end, a second end and an airtight cavity, the wall surface of the tube body is provided with at least one capillary structure layer, the airtight cavity is filled with working fluid, any one of the first end and the second end of the tube body is arranged in a vertical mode with a horizontal plane, the first end and the second end are respectively positioned at the upper end and the lower end of the tube body, and one end of the tube body, which is in contact with the horizontal plane, is provided with an expansion space which is used as an ice molecule release space after the working fluid is frozen.

The heat pipe structure, wherein: the pipe body is provided with the expansion space which is the lower end, and the volume ratio of the expansion space is larger than that of other parts of the pipe body.

The heat pipe structure, wherein: the expansion space is vertically and upwards protruded from the pipe wall of the pipe body to form a pipe expanding space.

The heat pipe structure, wherein: the expansion space horizontally protrudes from any one of the left side or the right side of the pipe wall of the pipe body to form a pipe expanding space.

The heat pipe structure, wherein: the tube body is made of any one of aluminum, copper, stainless steel and titanium.

The heat pipe structure, wherein: the working fluid is any one of water, methanol and acetone.

Because the heat pipe is when perpendicular furnishings, receive the working fluid that gravity influences to gather in the lower extreme of heat pipe to because of the working fluid of this heat pipe inside filling will produce the phenomenon of freezing when operational environment is less than zero, and ambient temperature-40 ~ 100 degrees changes when actual job scene, internal working fluid because the different physical density of frozen water when freezing, the molecular release power of the ice can make the heat pipe bottommost swell at the one end (heat pipe lower extreme department) of the below of most vertical direction, so the utility model discloses set up an expansion space that prevents that heat pipe body swell as the ice molecule release space after working fluid freezes.

Drawings

FIG. 1 is a perspective view of a first embodiment of a heat pipe structure according to the present invention;

fig. 2 is a sectional view of a first embodiment of the heat pipe structure of the present invention.

Description of reference numerals: a pipe body 1; a first end 11; a second end 12; a gas-tight chamber 13; an expansion space 14; a capillary structure layer 2; a working fluid 3.

Detailed Description

The above objects, together with the structure and functional characteristics of the invention, will be best understood from the following description of the preferred embodiments when read in connection with the accompanying drawings.

Referring to fig. 1 and fig. 2, a perspective and cross-sectional view of a first embodiment of the heat pipe structure of the present invention is shown, the heat pipe structure of the present invention includes: a tube body 1;

the tube 1 has a first end 11 and a second end 12 and an airtight chamber 13, the wall of the tube 1 has at least one capillary structure layer 2 and is filled with a working fluid 3, the working fluid 3 is any one of water, refrigerant, methanol and acetone, the capillary structure layer 2 can be sintered powder or grooves or woven meshes or a combination thereof, the pipe body 1 is any one of a round pipe, a flat pipe and a square pipe, the material of the pipe body 1 is any one of aluminum, copper, stainless steel and titanium, any one of the first end 11 and the second end 12 of the tube body 1 is arranged in a way of being vertical to a horizontal plane, that is, the tube 1 is vertically disposed, the first and

second ends

11 and 12 are respectively located at the upper and lower ends of the tube 1, the end of the pipe body 1 contacting the horizontal surface has an expansion space 14 as an ice molecule releasing space after the working fluid 3 is frozen.

The volume ratio of the part of the pipe body 1 provided with the expansion space 14 is larger than that of other parts of the pipe body 1, and the expansion space 14 is formed by vertically and upwards protruding the pipe wall of the pipe body or is formed by horizontally and upwards protruding any one of the left side or the right side of the pipe wall of the pipe body.

The utility model provides a problem lie in working fluid will gather at the lower extreme when the heat pipe is used upright perpendicularly, simultaneously when ambient temperature is less than 0 degree, the inside working fluid that is located the lower extreme of this heat pipe will make produces the phenomenon of freezing, and cause the position that this heat pipe freezes to take place the phenomenon of inflation, the booster breaks even, so the present case sets up an expansion space in the heat pipe lower extreme when this heat pipe is used upright and freezes the ice molecule release space behind as working fluid, of course also can locate to connect in the both ends of heat pipe and set up this expansion space, or correspond to setting up this expansion space along with the user state difference everywhere in the heat pipe.

Claims

1. A heat pipe structure, comprising:

2. A heat pipe structure as defined in claim 1, wherein: the pipe body is provided with the expansion space which is the lower end, and the volume ratio of the expansion space is larger than that of other parts of the pipe body.

3. A heat pipe structure as defined in claim 1, wherein: the expansion space is vertically and upwards protruded from the pipe wall of the pipe body to form a pipe expanding space.

4. A heat pipe structure as defined in claim 1, wherein: the expansion space horizontally protrudes from any one of the left side or the right side of the pipe wall of the pipe body to form a pipe expanding space.

5. A heat pipe structure as defined in claim 1, wherein: the tube body is made of any one of aluminum, copper, stainless steel and titanium.

6. A heat pipe structure as defined in claim 1, wherein: the working fluid is any one of water, methanol and acetone.