CN-122015541-A - High-power miniature heat pipe

Abstract

A high-power miniature heat pipe belongs to the field of heat transfer. The device is characterized by comprising a miniature heat pipe shell, a boiling vaporizer, a condensing liquefier, a capillary liquid transmission block, a fin radiator and a liquid storage bag. The high temperature heat source contacts the boiling vaporizer to make the working medium permeated in the boiling vaporizer boil and vaporize efficiently, the gaseous working medium produced by phase change diffuses through the shell space of the micro heat pipe to condense and liquefy the gas fast, the liquid migrates fast under Van der Waals force and returns to the boiling vaporizer through the capillary liquid block to form circulation, and the two liquid storing devices prevent the heat pipe from being burnt out locally. The boiling vaporizer and the condensing liquefier have the advantages of unique technology, high heat flow density, simple manufacture and miniaturization, and are suitable for cooling, energy saving and environmental protection of high-power electronic products.

Inventors

• HU KAIXIN
• WU DAN

Assignees

• 宁波大学

Dates

Publication Date

20260512

Application Date

20241110

Claims (2)

1. 1. A high power micro heat pipe device, comprising: The miniature heat pipe shell (1) comprises a gas-liquid adjusting port (1-1), a pipe port (1-2), a fin port (1-3) and a vertical wall surface (1-4), wherein the whole miniature heat pipe shell (1) is a square-port flat pipe, except the three openings, the rest are sealed, the gas-liquid adjusting port (1-1) and the fin port (1-3) are arranged on the opposite wall surfaces, and the two vertical wall surfaces (1-4) are correspondingly and equidistantly made of red copper or aluminum alloy materials; The boiling vaporizer (2) comprises a boiling bed (2-1), a transfusion bridge (2-2), a liquid transmission connecting piece (2-3) and a liquid storage tank (2-4), wherein the boiling vaporizer (2) is integrally made of foam copper materials with the aperture of 60ppl-130ppl, the bottom planes of the boiling bed (2-1), the transfusion bridge (2-2) and the liquid storage tank (2-4) are the same plane, the liquid storage tank (2-4) and the liquid transmission connecting piece (2-3) are arranged at two ends of the boiling vaporizer (2), the liquid storage tank (2-4) is adjacent to the boiling bed (2-1), the other end of the boiling bed (2-1) is adjacent to the transfusion bridge (2-2), the other end of the transfusion bridge (2-2) is adjacent to the liquid transmission connecting piece (2-3), the upper plane of the liquid storage tank (2-4) is higher than the boiling bed (2-1) and the transfusion bridge (2-2), the upper ends of the boiling bed (2-1) are arranged at equal intervals, the upper ends of the boiling bed are in a groove v-shaped groove shape, the groove v-shaped groove v is formed by the groove v-shaped groove (2-2) is arranged at the other end of the groove (2-2) and the groove (v) is arranged at the groove (v) of the groove shape of the groove (v-shaped groove (2-shaped) and the groove (v) is the groove (v), the width of the liquid transferring connecting piece (2-3) is consistent with that of the transfusion bridge (2-2), the bottom plane is higher than the bottom plane of the transfusion bridge (2-2), and the upper plane is lower than the upper plane of the transfusion bridge (2-2); The condensing liquefier (3) comprises a pointed cone (3-1), a transverse micro groove (3-2) and a longitudinal micro groove (3-3); the pointed cone (3-1) is a four-sided cone and is symmetrical relative to two conical surfaces, the mechanical shape of each pointed cone (3-1) is the same, the pointed ends are directed away from the bottom plane and are arranged at equal intervals in the transverse direction and the longitudinal direction, the transverse micro grooves (3-2) are vertically arranged at positions corresponding to the vertical wall surfaces (1-4) of the micro heat pipe shell (1), the transverse micro grooves are close to the bottom plane, the longitudinal micro grooves (3-3) are arranged at equal intervals at positions corresponding to the vertical wall surfaces (1-4) of the micro heat pipe shell (1), the distance between the bottom surfaces of the longitudinal micro grooves (3-3) and the bottom plane is shorter than the distance between the bottom surfaces of the transverse micro grooves (3-2), the groove width of each transverse micro groove (3-2) is 1.0mm, the groove width of each longitudinal micro groove (3-3) is 1.5mm, the inclination angles of the four conical surfaces of the pointed cone (3-1) and the bottom plane are all 75 degrees, the bottom surfaces of the condenser (3) are arranged at equal intervals, the two adjacent vertical wall surfaces are mutually perpendicular, the two vertical wall surfaces and the vertical wall surfaces are in contact with the corresponding surfaces of the vertical wall surfaces (1-4) of the micro heat pipe shell (1), and the pointed cone (1) is made of a super-hydrophilic material; The capillary liquid transferring block (4) is a concave body and comprises a notch (4-1) and a liquid receiving end face (4-2), wherein the notch (4-1) is in close contact fit with a liquid connecting piece (2-3) in the boiling vaporizer (2), the bottom surface and the upper plane of the capillary liquid transferring block (4) are two planes which are identical in shape and are parallel to each other, the liquid receiving end face (4-2) is in close contact fit with the end face perpendicular to a longitudinal micro groove (3-3) of the condensing liquefier (3), and the two longitudinal vertical wall faces are in close contact fit with the inner wall of the position corresponding to the vertical wall face (1-4) of the miniature heat pipe shell (1), and the capillary liquid transferring block (4) is made of flexible liquid absorbing cotton materials; The liquid storage bag (6) is hexahedral, the bottom plane of the liquid storage bag (6) is flat with the bottom plane of the condensing liquefier (3), the upper flat wall surface is higher than the point of the pointed cone (3-1) in the condensing liquefier (3) and is contacted with the inner wall plane at the upper end of the micro heat pipe shell (1), the two vertical wall surfaces are closely contacted and matched with the inner wall of the corresponding position of the vertical wall surface (1-4) of the micro heat pipe shell (1), and the liquid storage bag (6) is made of flexible liquid absorbing cotton materials.
2. 2. The high power micro heat pipe device as claimed in claim 1, comprising: The high-power micro heat pipe device comprises a micro heat pipe shell (1), a boiling vaporizer (2), a condensation liquefier (3), a capillary liquid transfer block (4), a fin radiator (5), a liquid storage bag (6) and a pipe plug (7), wherein one vertical end face of a liquid storage reservoir (2-4) in the boiling vaporizer (2) is in contact with the vertical inner wall of one end of the micro heat pipe shell (1), the bottom surface of the boiling vaporizer (2) is in close contact with the bottom surface of the inner wall of the micro heat pipe shell (1), an infusion bridge (2-2) in the boiling vaporizer (2) is tightly inserted into a notch (4-1) in the capillary liquid transfer block (4), and the liquid receiving end face (4-2) of the capillary liquid transfer block (4) is in close contact fit with the vertical end face of a longitudinal micro groove (3-3) in the condensation liquefier (3); The bottom plane of the fin radiator (5) is reversely aligned with the bottom plane of the condensation liquefier (3) and is in tight contact, the fin radiator is arranged at the opening at the bottom of the end of the fin opening (1-3) of the micro heat pipe shell (1) and is sealed, the condensation liquefier (3) is arranged in the micro heat pipe shell (1), the fin radiator (5) is arranged outside the micro heat pipe shell (1), the bottom plane of the fin radiator (5) and the inner bottom wall at the opening of the micro heat pipe shell (1) are arranged on the same plane, the other end face of the condensation liquefier (3) perpendicular to the longitudinal micro groove (3-3) is in tight contact with one vertical wall face of the liquid storage bag (6), the other opposite wall face of the liquid storage bag (6) is arranged at the end opening (1-2) of the micro heat pipe shell (1), the pipe plug (7) covers the pipe end H (1-2) of the micro heat pipe shell (1) and is sealed, and the pipe plug (7) is made of a metal material which is the same as the micro heat pipe shell (1); The bottom planes of the boiling bed (2-1), the infusion bridge (2-2) and the liquid storage warehouse (2-4) are closely contacted with the bottom surface of the inner wall of the miniature heat pipe shell (1), the inverted v-shaped peak top of the boiling bed (2-1) of the boiling vaporizer (2), the upper plane of the infusion bridge (2-2), the peak of the pointed cone (3-1) of the condensing liquefier (3) and the capillary liquid transfer block (4) are positioned on the same plane, and have the same space interval with the upper wall surface in the miniature heat pipe shell (1).

Description

High-power miniature heat pipe The invention belongs to the field of heat transfer, and particularly relates to heat pipe equipment and technology. Background With the rapid development of electronic technology, electronic products are widely applied to the fields of military and people, particularly high-power electronic products are rapidly popularized, but the heating of the electronic products seriously increases the safety risk, so that the cooling and heat dissipation become industry hot, particularly the technology without energy consumption, microminiaturization and high heat dissipation is the key point of research in various countries of the world, a large number of heat dissipation technologies are applied to the past, the good effect is exerted, the problems of high-power electronic products, such as failure due to high heating and even combustion accidents, are faced, and the traditional heat dissipation technology is obviously not suitable for the development of technology. Therefore, the inventor has diligently studied for several years, systematically created a set of energy-consumption-free, microminiaturized and high-efficiency phase-change heat dissipation technology, and strives to play a positive role in promoting the application of high-power electronic products. Disclosure of Invention In order to achieve the above purpose, the invention provides a high-power miniature heat pipe device, which is developed by using a novel high-efficiency condensing and liquefying phase-change device and a high-efficiency boiling and vaporizing phase-change device which are researched by experiments according to the characteristics of boiling and vaporizing phase-change heat absorption of a heat dissipation heat pipe in a high temperature region and condensing and liquefying phase-change heat release in a heat dissipation region, and by using hydrodynamic thermocapillary theory and solid heat conduction and Van der Waals attraction theory of molecules between solid-liquid interfaces as guidance, the heat transfer efficiency of the miniature heat pipe is further improved, and a novel technology is provided for cooling high-power electronic equipment. The invention adopts the following scheme to realize the aim of the invention: a high-power miniature heat pipe device comprises a miniature heat pipe shell 1, a boiling vaporizer 2, a condensation liquefier 3, a capillary liquid transfer block 4, a fin radiator 5, a liquid storage bag 6 and a pipe plug 7. The miniature heat pipe shell 1 comprises a gas-liquid adjusting port 1-1, a pipe port 1-2, fin ports 1-3 and vertical wall surfaces 1-4, wherein the whole miniature heat pipe shell 1 is a square-port flat pipe, the rest is sealed except the three openings, the gas-liquid adjusting port 1-1 and the fin ports 1-3 are arranged on opposite wall surfaces, the two vertical wall surfaces 1-4 are correspondingly and equidistantly spaced, gas in the pipe is injected or extracted from the gas-liquid adjusting port 1-1 according to working condition requirements, and working media are also injected or extracted from the gas-liquid adjusting port 1-1, and the miniature heat pipe shell is made of red copper or aluminum alloy materials. The boiling vaporizer 2 comprises a boiling bed 2-1, an infusion bridge 2-2, a liquid transfer connecting piece 2-3 and a liquid storage warehouse 2-4, wherein the boiling vaporizer 2 is integrally made of foam copper materials with the aperture of 60ppl-130ppl, the bottom planes of the boiling bed 2-1, the infusion bridge 2-2 and the liquid storage warehouse 2-4 are the same plane, the width is consistent, the width is equal to the width of the inner wall of the micro heat pipe shell 1, two vertical wall surfaces are in close contact fit with the corresponding inner wall of the vertical wall surface 1-4 of the micro heat pipe shell 1, the liquid storage warehouse 2-4 and the liquid transfer connecting piece 2-3 are arranged at the two ends of the boiling vaporizer 2, the liquid storage warehouse 2-4 is adjacent to the boiling bed 2-1, the other end of the boiling bed 2-1 is adjacent to the infusion bridge 2-2, and the other end of the infusion bridge 2-2 is adjacent to the liquid transfer connecting piece 2-3; the upper plane of the liquid storage warehouse 2-4 is higher than the boiling bed 2-1 and the transfusion bridge 2-2, the upper end of the boiling bed 2-1 is provided with v-shaped grooves which are tightly arranged, the openings of the v-shaped grooves are upward, the bottom line of the v-shaped grooves is equidistant with the vertical wall surface 1-4 of the micro heat pipe shell 1, one end of the bottom of the v-shaped grooves is connected with the liquid storage warehouse 2-4, the other end of the bottom line of the v-shaped grooves is connected with the transfusion bridge 2-2, the inverted v-shaped sharp edge formed by the v-shaped grooves which are tightly arranged on the boiling bed 2-1 is provided with a front tip which