A heat pipe radiator using a new phase change material

Abstract

The present invention provides a heat pipe radiator using a new phase change material, characterized in that it comprises: a square heat pipe shell, a heat dissipation cylinder, a cylindrical shell heat pipe, a substrate, and a new phase change sponge; two square heat pipe shells are provided, and the square heat pipe shells are respectively fixed to the two ends of the substrate through the cylindrical shell heat pipe; left and right end gaps are provided inside the substrate, and the new phase change sponges are arranged in the left and right end gaps, and an upper end gap is provided at the upper end of the substrate; the heat dissipation cylinder is fixedly arranged at the upper end of the square heat pipe shell; a key groove is provided at the upper end of the heat dissipation cylinder; the present invention adopts a method of filling the new phase change material to dissipate heat, and fills the new hard carbon nanotube sponge as the phase change material. The new hard carbon nanotube sponge can continuously absorb water vapor in the air at room temperature, but when the heat sink is raised to a certain temperature, the water in the sponge will evaporate and absorb heat, thereby achieving the purpose of high-temperature heat dissipation.

Description

Technical Field

[0001] The invention relates to the field of heat dissipation of radiators, and in particular to a heat pipe radiator using a new phase change material. Background Art

[0002] Radiators are mainly used for heat dissipation of CPUs and high-heat-generating equipment, dissipating the heat generated by the equipment into the air, which requires the radiator to have a good thermal conductivity. The current mainstream radiators are heat pipe radiators and integrated water-cooled radiators. A heat pipe is an artificial component with excellent heat conductivity. The commonly used heat pipe body is a closed metal pipe, often made of copper, with a small amount of working medium and capillary structure inside, and the tube is in a vacuum state. The working principle of the heat pipe radiator is that the CPU generates heat, the heat is transferred to the heat pipe, and the working medium in the heat pipe is heated to become gaseous. These gaseous substances rise along the capillary pipe to the fins, and then the fan dissipates the heat for them. The working medium becomes liquid again and descends along the pipe to the bottom to absorb heat again, and so on. There are two main reasons why the tube must be made into a vacuum. One is that the boiling point of the liquid is lower in the vacuum state, and the heat pipe working medium changes from liquid to gas to absorb a lot of heat. The second is that the medium and the heat pipe wall will not undergo electrochemical reactions in the vacuum state, which ensures the service life of the heat pipe.

[0003] A Chinese invention patent (CN111490021A) discloses a dual heat pipe radiator. When a single heat pipe is damaged, the heat dissipation of the device is not affected. The practicability of the device is relatively high, but there is still a situation where both heat pipes are damaged at the same time.

[0004] A Chinese invention patent (CN212809134U) discloses a dual-fan inclined side wind radiator, which uses dual fans for heat dissipation and can generate a large amount of wind through the rotation of propellers. It is easy to use and energy-saving and environmentally friendly, but has poor effect in high-temperature heat dissipation and generates noise.

[0005] The existing heat pipe radiator has a slow heat dissipation speed when in use. When the CPU generates too much heat, it is often difficult to dissipate heat quickly and the heat dissipation speed is slow. Therefore, it is necessary to provide a heat pipe radiator of a new material to meet high temperature heat dissipation conditions and solve the above technical problems. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a heat pipe radiator using a new phase change material, which dissipates heat through the new phase change material filled externally combined with the heat pipe, thereby solving the problems of slow heat dissipation speed and high temperature heat dissipation of the existing radiator.

[0007] In order to achieve the above technical objectives, the technical solution of the present invention is as follows:

[0008] A heat pipe radiator using a new phase change material comprises: a square heat pipe shell, a heat dissipation cylinder, a cylindrical shell heat pipe, a substrate, and a phase change sponge; the square heat pipe shell is provided with two, and the square heat pipe shell is respectively fixed to the two ends of the substrate through the cylindrical shell heat pipe; the substrate is provided with left and right end gaps inside, the phase change sponge is arranged in the left and right end gaps, and the upper end of the substrate is provided with an upper end gap; the heat dissipation cylinder is fixedly arranged at the upper end of the square heat pipe shell; the upper end of the heat dissipation cylinder is provided with a keyway;

[0009] Preferably, the substrate is made of copper, and two rows of cylindrical shell heat pipes are distributed in an inverted triangle in the substrate; the square heat pipe shell adopts an inclined design; and a phase change sponge is provided in the key slot.

[0010] Preferably, the upper end of the substrate is provided with 10*10 upper end gaps of 1mm deep and 2*2mm, and the left and right sides are provided with 20 left and right end gaps of 0.3mm deep and 0.5*18mm respectively.

[0011] Preferably, 2*7 circular through gaps with a diameter of 0.25 mm are opened on both sides of the substrate, and the two rows of gaps are arranged alternately in an inverted triangle shape.

[0012] Preferably, the square heat pipe shell is inclined at an angle of 3° from the top to the bottom.

[0013] Preferably, a keyway is formed at every 120° on the heat dissipation cylinder, the keyway has a depth of 0.8 mm, and the upper end is chamfered with a circular angle of 0.6 mm.

[0014] Preferably, the heat dissipation cylinders are arranged from dense to sparse.

[0015] Further explanation: the distance between the centers of the first four columns of heat dissipation cylinders is 4 mm, and the distance between the centers of the last three columns is 6 mm.

[0016] Preferably, the phase change sponge is filled in the upper side of the substrate, inside the substrate, and inside the key slot respectively.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention adopts a method of filling a new phase change material for heat dissipation. Compared with traditional radiators, the present invention has significant effects in the field of high-temperature heat dissipation. The new hard carbon nanotube sponge is filled as a phase change material. The new hard carbon nanotube sponge can continuously absorb water vapor in the air at room temperature, but when the heat sink rises to a certain temperature, the water in the sponge will evaporate and absorb heat, thereby achieving the purpose of high-temperature heat dissipation.

[0019] 2. The present invention adopts a horizontal placement of heat pipes, and the square shell is used as the condensation section of the heat pipe, which is tilted at an angle of 3° to achieve the reflux of the liquid in the condensation section and realize the heat dissipation cycle. Compared with vertically placed heat pipes, this radiator has its unique advantages in some scenarios where there is insufficient vertical space.

[0020] 3. The heat dissipation cylinders on the square shell of the present invention adopt a design form of changing from dense to sparse. Since the heat is gradually reduced during the transfer process, the design form of changing from dense to sparse can achieve better heat dissipation effect while meeting the cost requirement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a heat pipe radiator using a new phase change material according to the present invention;

[0022] Figure 2 A schematic diagram of the gaps on both sides of a heat pipe radiator substrate using a new phase change material according to the present invention;

[0023] Figure 3 A top view of a heat pipe radiator using a new phase change material according to the present invention;

[0024] Figure 4 A cross-sectional view of a heat pipe radiator using a novel phase change material according to the present invention;

[0025] Figure numerals: 1. square heat pipe shell, 2. heat dissipation cylinder, 3. keyway, 4. cylindrical shell heat pipe, 5. substrate, 6. upper end gap, 7. left and right end gaps, 8. phase change sponge. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail in conjunction with the accompanying drawings and specific embodiments. In the following description, the characteristic details such as specific configurations and components are provided only to help fully understand the embodiments of the present invention. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. In addition, for clarity and brevity, the description of known functions and structures is omitted.

[0027] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0028] In various embodiments of the present invention, it should be understood that the size of the serial numbers of the following processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0029] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0030] In the embodiments provided in the present application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0031] Combined with Figure 1-4 The present invention provides a heat pipe radiator using a new phase change material, comprising: a square heat pipe shell 1, a heat dissipation cylinder 2, a cylindrical shell heat pipe 4, a substrate 5, and a phase change sponge 8; two square heat pipe shells 1 are provided, and the square heat pipe shells 1 are respectively fixed to the two ends of the substrate 5 through the cylindrical shell heat pipe 4; the substrate 5 is provided with left and right end gaps 7 inside, and the phase change sponge 8 is arranged in the left and right end gaps 7, and the upper end of the substrate 5 is provided with an upper end gap 6; the heat dissipation cylinder 2 is fixedly arranged at the upper end of the square heat pipe shell 1; the upper end of the heat dissipation cylinder 2 is provided with a key groove 3;

[0032] Further explanation: two rows of cylindrical shell heat pipes 4 arranged in an inverted triangle are interspersed inside the copper substrate; the heat pipe is composed of a cylindrical shell 4 and a square heat pipe shell 1. The cylindrical shell heat pipe 4 is mainly located in the evaporation section of the heat pipe. The liquid in the pipe enters the square heat pipe part through evaporation to achieve heat dissipation. The square heat pipe part is located in the condensation section of the heat pipe and adopts an inclined design to facilitate liquid reflux to complete a closed cycle; the heat dissipation cylinder 2 is located at the upper end of the square heat pipe part. The heat dissipation cylinder 2 adopts a design form of changing from dense to sparse, and is densely arranged in an inverted triangle. Three key slots distributed in a circle are opened on the cylindrical surface. An appropriate amount of phase change sponge material is filled in the key slot.

[0033] Preferably, the substrate 5 is made of copper, and two rows of cylindrical shell heat pipes 4 arranged in an inverted triangle are used in the substrate 5; the square heat pipe shell 1 adopts an inclined design; and a phase change sponge 8 is provided in the key slot 3.

[0034] Preferably, the upper end of the substrate 5 is provided with 10*10 upper end gaps 6 of 1mm deep and 2*2mm, and the left and right sides are provided with 20 left and right end gaps 7 of 0.3mm deep and 0.5*18mm respectively.

[0035] Preferably, 2*7 circular through gaps with a diameter of 0.25 mm are provided on both sides of the substrate 5, and the two rows of gaps are arranged alternately in an inverted triangle shape.

[0036] Preferably, the square heat pipe housing 1 is inclined at an angle of 3° from the top to the bottom.

[0037] Preferably, a key slot 3 is formed every 120° on the heat dissipation cylinder 2, the key slot 3 has a depth of 0.8 mm, and a circular chamfer of 0.6 mm is performed on the upper end.

[0038] Preferably, the heat dissipation cylinders 2 are arranged from dense to sparse.

[0039] To further illustrate, the spacing between the centers of the first four columns of heat dissipation cylinders 2 is 4 mm, and the spacing between the centers of the last three columns is 6 mm.

[0040] Preferably, the phase change sponge 8 is filled on the upper side of the substrate 5 , inside the substrate 5 , and inside the key slot 3 , respectively.

[0041] Embodiment 1,

[0042] like Figure 1 As shown, a heat pipe radiator using a new phase change material includes a square heat pipe shell 1, a heat dissipation cylinder 2, a keyway 3, a cylindrical shell heat pipe 4, a substrate 5, an upper end gap 6, left and right end gaps 7, and a phase change sponge 8, wherein the substrate 5 is made of a 20*20mm copper material with a thickness of 10mm, the bottom of the substrate is in contact with the heat source, and absorbs heat generated by the external system through contact, and an upper end gap of 2*2mm is opened at the upper end of the substrate, the gap depth is 1mm, and the distance from the edge of the substrate is 0.5mm, wherein the two upper end gaps are spaced 1mm apart, and the number of gaps is 10*10; at the same time, left and right end gaps of 0.5*18mm are opened on the left and right sides of the substrate, the distance between the gap and the left and right edges of the substrate is 0.25mm, the distance from the upper and lower edges is 1mm, and the gap depth is 0.3mm, wherein the two left and right end gaps are spaced 0.5mm apart, and the number of gaps on both sides is 1*20.

[0043] like Figure 2 As shown, a circular gap with a diameter of 2.5mm is opened inside the substrate, and the gap runs through the inside of the substrate. The distance between the centers of the two circular holes is 4mm, and the distance between the center of the gap and the upper and lower edges is 1.8mm. The number of gaps is 2*7, and the upper and lower rows of gaps are arranged in an inverted triangle non-uniform distribution. The distance between the upper gap and the left edge of the substrate is 2mm, and the distance from the left edge is 4mm; the distance between the lower gap and the left and right edges is the opposite.

[0044] Stretching is performed along the edges of the circular gaps on both sides of the substrate, and the cylindrical shell with a thickness of 0.2mm is stretched, and the stretching length is 4mm. The cylindrical shell heat pipe 4 is immediately connected to a square heat pipe shell 1, and the thickness of the square heat pipe shell is 0.2mm. The square heat pipe shell 1 connected with the cylindrical shell heat pipe is 29.4*9.4mm in size. On this basis, the shell shell is stretched. The shell thickness of 0.2mm must be maintained during the stretching process. At the same time, the shell is tilted at an angle of 3° around to facilitate the reflux of liquid in the later condensation stage. The shell stretching length is 35mm. Combining the square shell heat pipe and the cylindrical shell heat pipe, the total length of the heat dissipation heat pipe is 98mm.

[0045] like Figure 3 As shown, in order to achieve better heat dissipation of the heat dissipation system, a series of heat dissipation cylinders 2 are connected to the upper end of the square shell. The cylinder height is 5mm. The heat dissipation cylinders are staggered in an inverted triangle. The distance between the centers of the two heat dissipation cylinders increases from far to near. The distance between the first four columns is 4mm, the distance between the 4th to 6th columns is 5mm, and the distance between the last two columns is changed to 6mm. Because the heat at the end of the heat pipe is less, this type of arrangement can greatly reduce the waste of materials. At the same time, a keyway is opened on the surface of each heat dissipation cylinder. The keyway length is 3mm and the width is 1mm. The radius of the semicircle at both ends is 0.5mm, the groove depth is 0.8mm, and the distance from the bottom is 1mm. Three keyways are opened on the surface of each heat dissipation cylinder, and the angle between them is 120°. At the same time, a 0.6mm fillet is chamfered at the top of the heat dissipation cylinder.

[0046] The heat dissipation principle of the present invention is as follows:

[0047] The bottom of the substrate is fixed to the external machine heat source. The external machine generates heat when it works. The substrate is made of copper material and has a good heat absorption effect. The substrate absorbs heat, and the heat causes the phase change material in the evaporation section of the heat pipe to evaporate and take away the heat. The evaporated steam flows from the central channel to the condensation section of the heat pipe, condenses into liquid, and releases latent heat at the same time. Under the action of gravity, the liquid flows back to the evaporation section. In this way, a closed cycle is completed, thereby transferring a large amount of heat from the heating section to the heat dissipation section. A series of heat dissipation cylinders are arranged at the upper end of the square shell of the heat dissipation section. The new phase change material filled in the keyway of the cylinder is combined with the surface of the cylinder to assist in the heat dissipation of the heat dissipation section. At the same time, gaps filled with new phase change materials are opened at the upper end and left and right sides of the substrate. This material can continuously absorb water vapor in the air at room temperature, but when the heat sink rises to a certain temperature, the water in the sponge will evaporate and absorb heat, thereby achieving the effect of heat dissipation. For devices with large heat dissipation such as CPUs, this radiator has the purpose of achieving high-temperature heat dissipation and rapid heat dissipation.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat pipe radiator using a new phase change material, characterized in that: include: A square heat pipe shell (1), a heat dissipation cylinder (2), a cylindrical shell heat pipe (4), a substrate (5), and a hard carbon nanotube sponge as a phase change sponge (8); two square heat pipe shells (1) are provided, and the square heat pipe shells (1) are respectively fixed to the two ends of the substrate (5) through the cylindrical shell heat pipe (4); left and right end gaps (7) are provided inside the substrate (5), and the phase change sponge (8) is arranged in the left and right end gaps (7); an upper end gap (6) is provided at the upper end of the substrate (5); the heat dissipation cylinder (2) is fixedly arranged at the upper end of the square heat pipe shell (1); and a keyway (3) is provided at the upper end of the heat dissipation cylinder (2).

2. A heat pipe radiator using a new phase change material according to claim 1, characterized in that: The substrate (5) is made of copper, and two rows of cylindrical shell heat pipes (4) are arranged in an inverted triangle in the substrate (5); the square heat pipe shell (1) is designed to be inclined; and a phase change sponge (8) is provided in the keyway (3).

3. The heat pipe radiator using a new phase change material according to claim 1, characterized in that: The upper end of the substrate (5) is provided with 10*10 upper end gaps (6) of 1 mm in depth and 2*2 mm in size, and the left and right sides are provided with 20 left and right end gaps (7) of 0.3 mm in depth and 0.5*18 mm in size, respectively.

4. The heat pipe radiator using a new phase change material according to claim 1, characterized in that: The two sides of the substrate (5) are provided with 2*7 circular through-going gaps with a diameter of 0.25 mm, and the two rows of gaps are arranged alternately in an inverted triangle shape.

5. The heat pipe radiator using a new phase change material according to claim 1, characterized in that: The square heat pipe shell (1) is inclined at an angle of 3° from the top to the bottom.

6. The heat pipe radiator using a new phase change material according to claim 1, characterized in that: The heat dissipation cylinder (2) is provided with a key slot (3) every 120°, the key slot (3) has a depth of 0.8 mm, and the upper end is chamfered with a circular angle of 0.6 mm.

7. The heat pipe radiator using a new phase change material according to claim 1, characterized in that: The heat dissipation cylinders (2) are arranged in a dense to sparse arrangement.

8. The heat pipe radiator using a new phase change material according to claim 7, characterized in that: The spacing between the centers of two heat dissipation cylinders in the first four rows of the heat dissipation cylinders (2) is 4 mm, and the spacing between the centers of two heat dissipation cylinders in the last three rows is 6 mm.

9. The heat pipe radiator using a new phase change material according to claim 1, characterized in that: The phase change sponge (8) is respectively filled on the upper side of the substrate (5), inside the substrate (5), and inside the key slot (3).

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