Wingless twin vacuum glass metal helical heat exchange device

Abstract

A wing-free double-vacuum glass metal spiral heat exchange device, comprising a uniform temperature tube and a gravity heat pipe; the gravity heat pipe is a hollow tubular structure, and the gravity heat pipe is a sealed structure, a phase change medium is arranged in the gravity heat pipe, the gravity heat pipe comprises an evaporation section and a condensation section, the evaporation section is a hollow spiral structure with upper and lower openings, the condensation section is arranged at the top of the evaporation section, and the diameter of the condensation section is greater than the pipe diameter of the evaporation section; the uniform temperature tube is a hollow and sealed structure, a through hole is arranged at the top of the uniform temperature tube, the gravity heat pipe passes through the through hole and is arranged, the condensation section is arranged outside the uniform temperature tube, the evaporation section is arranged inside the uniform temperature tube, and there is a preset distance between the evaporation section and the inner wall of the uniform temperature tube; through the above arrangement, the technical problem that the gravity heat pipe in the traditional heat exchange device is provided with fins outside the pipe, the heat exchange area of the gravity heat pipe is increased, and the heat exchange efficiency is improved is solved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and in particular to a wingless double vacuum glass-metal spiral heat exchange device. Background Technology

[0002] Heat exchangers are used to transfer heat and are widely used in solar thermal utilization, air conditioning systems, aerospace, cooling systems, waste heat recovery, and other fields. Heat exchangers primarily rely on gravity heat pipes for heat transfer. Gravity heat pipes are heat transfer elements with extremely high thermal conductivity, transferring heat through the evaporation and condensation of the medium. During operation, the medium absorbs heat in the evaporation section, transforming from liquid to vapor. The vapor rises from the evaporation section to the condensation section due to the pressure difference between the two ends, where it condenses. The condensed liquid then returns to the evaporation section by gravity for circulation. They offer advantages such as simple structure, ease of manufacturing, and good stability.

[0003] In traditional heat exchange devices, gravity heat pipes are finned to ensure better temperature uniformity and heat dissipation. This occupies a large space on the gravity heat pipe, resulting in low heat exchange efficiency due to the large amount of ineffective space. Utility Model Content

[0004] To address the technical problem that traditional gravity heat pipes require fins to ensure better temperature uniformity and heat dissipation, which would occupy a large amount of space, this invention provides a finless double-vacuum glass-metal spiral heat exchange device.

[0005] A wingless double-vacuum glass-metal spiral heat exchanger includes a temperature equalizer tube and a gravity heat pipe. The gravity heat pipe is a hollow tubular structure and is sealed. A phase change medium is disposed inside the gravity heat pipe. The gravity heat pipe includes an evaporation section and a condensation section. The evaporation section is a hollow spiral structure with openings at the top and bottom. The condensation section is located at the top of the evaporation section, and its diameter is larger than that of the evaporation section. The temperature equalizer tube is a hollow and sealed structure. A through hole is provided at the top of the temperature equalizer tube, through which the gravity heat pipe passes. The condensation section is located outside the temperature equalizer tube, and the evaporation section is located inside the temperature equalizer tube. A predetermined distance exists between the evaporation section and the inner wall of the temperature equalizer tube.

[0006] In a specific embodiment of this utility model, the evaporation section is a cylindrical spiral structure, and the outer diameter of the spiral of the evaporation section is greater than half of the inner diameter of the temperature equalization tube and smaller than the inner diameter of the temperature equalization tube.

[0007] In one specific embodiment of this utility model, the condensation section is a cylinder, and the inner diameter of the evaporation section is larger than the diameter of the condensation section.

[0008] In a specific embodiment of this utility model, the temperature equalization tube includes a tube body and a sealing cap. The sealing cap is disposed on the top of the tube body, and a vacuum is provided between the evaporation section and the temperature equalization tube. The through hole is disposed above the sealing cap.

[0009] In a specific embodiment of this utility model, the connection position of the evaporation section and the condensation section is opposite to the through hole, and the connection between the condensation section and the evaporation section is sealed to the through hole.

[0010] In one specific embodiment of this utility model, hot melt adhesive or a rubber ring is provided between the sealing cap and the tube body.

[0011] In a specific embodiment of this utility model, the vertical height of the evaporation section is higher than the height of the condensation section, and the height ratio of the evaporation section to the condensation section is 5:1.

[0012] In a specific embodiment of this utility model, the temperature equalization tube is a U-shaped structure with two layers, and the space between the inner and outer layers of the temperature equalization tube is a vacuum structure.

[0013] In a specific embodiment of this utility model, a capillary tube is also included. The capillary tube has an internal gear-shaped structure, and its outer side is attached to the inner wall of the evaporation section. The capillary tube has a spiral structure and is arranged correspondingly to the evaporation section.

[0014] In a specific embodiment of this utility model, the sealing cap is a cylinder, and the material of the sealing cap is a durable high-temperature resistant material that can withstand long-term temperatures of not less than 300°C; the material of the gravity heat pipe is a metal material or composite material with a melting point of not less than 600°C, a thermal conductivity of not less than 40W / m·K, and corrosion resistance.

[0015] The beneficial effects of this utility model are as follows: The gravity heat pipe includes an evaporation section and a condensation section. The condensation section is located at the top of the evaporation section, and its diameter is larger than that of the evaporation section. The gravity heat pipe has a sealed structure, and a phase change medium is disposed inside it. The spiral structure of the gravity heat pipe increases the heat transfer area and saves heat transfer fins. A temperature equalization pipe is disposed outside the evaporation section. The temperature equalization pipe has a hollow and sealed structure, and a through hole is provided at the top of the temperature equalization pipe. The gravity heat pipe passes through the through hole. Through this arrangement, the temperature equalization pipe concentrates the heat energy to be dissipated around the evaporation section, ensuring the temperature uniformity of the gravity heat pipe. The condensation section is located outside the temperature equalization pipe, and the evaporation section is located inside the temperature equalization pipe. There is a preset distance between the evaporation section and the inner wall of the temperature equalization pipe. This arrangement is to make the temperature inside the temperature equalization pipe more uniform and protect the temperature equalization pipe from damage due to temperature changes inside the gravity heat pipe. According to this application, a wingless double-vacuum glass-metal spiral heat exchange device can eliminate the need for fins, saving space, while also ensuring better temperature uniformity and heat dissipation, thus improving heat exchange efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of a sealing cap structure according to the present invention;

[0018] Figure 3 This is a cross-sectional schematic diagram of an evaporation section according to this utility model. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model or simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," "linking," and "hinged" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] A wingless double-vacuum glass-metal spiral heat exchanger includes a temperature equalization tube 1 and a gravity heat pipe 2. The gravity heat pipe 2 is a hollow tubular structure and is a sealed structure. A phase change medium 4 is disposed inside the gravity heat pipe 2. The gravity heat pipe 2 includes an evaporation section 6 and a condensation section 7. The evaporation section 6 is a hollow spiral structure with openings at the top and bottom. The condensation section 7 is located at the top of the evaporation section 6, and the diameter of the condensation section 7 is larger than the diameter of the evaporation section 6. The temperature equalization tube 1 is a hollow and sealed structure. A through hole 9 is provided at the top of the temperature equalization tube 1. The gravity heat pipe 2 passes through the through hole 9. The condensation section 7 is located outside the temperature equalization tube 1, and the evaporation section 6 is located inside the temperature equalization tube 1. There is a predetermined distance between the evaporation section 6 and the inner wall of the temperature equalization tube 1. Among them, phase change medium 4 is the substance inside gravity heat pipe 2 used to transfer heat; evaporation section 6 is a part of gravity heat pipe 2 used to convert the liquid state in phase change medium 4 into a gaseous state, thereby absorbing heat; condensation section 7 is used to condense the gaseous phase change medium 4 into a liquid state and release heat.

[0025] Specifically, such as Figures 1 to 3 As shown, the evaporation section 6 has a spiral structure to increase the heat transfer area. The diameter of the condensation section 7 is larger than the pipe diameter of the evaporation section 6, and the diameter of the condensation section 7 is more than 1.5 times larger than the pipe diameter of the evaporation section 6. This arrangement is to meet the flow rate of the liquid in the condensation section. At the same time, the joint between the evaporation section 6 and the condensation section 7 should meet the watertightness requirements to ensure the overall operation. The uniform temperature tube 1 has a hollow and sealed internal structure to accommodate the gravity heat pipe 2 and collect the heat energy dissipated by the evaporation section 6 of the gravity heat pipe 2. The top of the uniform temperature tube 1 is provided with a through hole 9, through which the gravity heat pipe 2 passes, so that the evaporation section 6 is inside the uniform temperature tube 1, and the condensation section 7 is outside the uniform temperature tube 1.

[0026] In a specific embodiment of this utility model, the evaporation section 6 is a cylindrical spiral structure, and the outer diameter of the spiral of the evaporation section 6 is greater than half of the inner diameter of the temperature equalization tube and smaller than the inner diameter of the temperature equalization tube.

[0027] Specifically, such as Figure 1 As shown, the evaporation section 6 has a cylindrical spiral structure, and the lower end of the gravity heat pipe 2 is closed to prevent the phase change medium 4 from flowing out from the lower port of the gravity heat pipe 2. In order to increase the number of spiral turns of the evaporation section 6, the outer diameter of the spiral of the evaporation section 6 is greater than half of the inner diameter of the uniform temperature pipe 1. In order to avoid friction caused by contact between the evaporation section 6 and the inner wall of the uniform temperature pipe, the outer diameter of the spiral of the evaporation section 6 is smaller than the inner diameter of the uniform temperature pipe 1. In order to increase the heat transfer area, the outer diameter of the spiral of the evaporation section 6 is close to the inner diameter of the uniform temperature pipe 1, but they do not contact each other. When the evaporation section 6 does not contact the uniform temperature pipe 1, the number of spiral turns of the evaporation section 6 is increased, the heat transfer area is increased, and the working efficiency is improved.

[0028] In a specific embodiment of this utility model, the condensation section 7 is a cylinder, and the diameter of the evaporation section 6 is smaller than the diameter of the condensation section 7.

[0029] Specifically, such as Figure 1 As shown, the diameter of the condensing section 7 is larger than the pipe diameter of the evaporating section 6, and the diameter of the condensing section 7 is 1.5 times larger than the pipe diameter of the evaporating section 6. This arrangement is to meet the flow rate of the liquid in the condensing section. At the same time, the joint between the evaporating section 6 and the condensing section 7 should meet the requirements of medium tightness to ensure the exchange of heat energy.

[0030] In a specific embodiment of this utility model, the temperature equalization tube 2 includes a tube body and a sealing cap 8. The sealing cap 8 is disposed on the top of the tube body, and the evaporation section 6 and the temperature equalization tube 1 are in a vacuum state. The through hole 9 is disposed above the sealing cap 8.

[0031] Specifically, such as Figure 1 As shown, the uniform temperature tube 1 is divided into a tube body and a sealing cap 8. The sealing cap 8 is fixedly installed on the top of the tube body. The diameter of the sealing cap 8 is the same as the diameter of the transverse cross-section circle of the tube body, and is used to seal the tube body. The through hole 9 is opened above the sealing cap. The evaporation section 6 is arranged inside the tube body, and the evaporation section 6 and the tube body are directly in a vacuum state.

[0032] In a specific embodiment of this utility model, hot melt adhesive is provided between the sealing cap 8 and the tube body.

[0033] Specifically, such as Figure 1 As shown, the sealing cap 8 is used to seal the tube body. In order to achieve a better sealing effect, hot melt adhesive is applied to the connection between the sealing cap 8 and the tube body to make the sealing cap 8 and the tube body have no gaps, thereby improving the sealing effect.

[0034] In a specific embodiment of this utility model, the condensation section 7 and the evaporation section 6 are connected through the through hole 9, and the connection between the condensation section 7 and the evaporation section 6 is sealed to the through hole.

[0035] Specifically, such as Figures 1 to 2 As shown, a through hole 9 is provided above the sealing cover 8. The through hole 9 is used to connect the evaporation section 6 and the condensation section 7. In order to reduce heat loss and ensure the vacuum state in the uniform temperature tube 1, the connection between the through hole 9 and the evaporation section 6 and the condensation section 7 is a sealed connection. The upper end of the evaporation section 6 is connected to the lower end of the condensation section 7. The evaporation section 6 and the condensation section 7 are connected through the through hole 9 on the sealing cover 8.

[0036] In a specific embodiment of this utility model, the vertical height of the evaporation section 6 is higher than the height of the condensation section 7, and the height ratio of the evaporation section 6 to the condensation section 7 is 5:1. It should be noted that the height direction described in this application is... Figure 1 The up and down directions are shown.

[0037] Specifically, such as Figure 1 As shown, the vertical height of the evaporation section 6 is greater than the height of the condensation section 7 because the phase change medium 4 required for the heat energy generated by the evaporation section 6 is larger. Therefore, the height of the evaporation section 6 is greater than the height of the condensation section 7, and the height ratio of the evaporation section 6 to the condensation section 7 is 5:1.

[0038] In a specific embodiment of this utility model, the temperature uniform tube 1 is a U-shaped structure with two layers, and the space between the inner and outer layers of the temperature uniform tube 1 is a vacuum structure.

[0039] Specifically, such asFigure 1 As shown, the temperature equalization tube 1 is configured as a double-layered U-shaped structure, with a vacuum structure between the double-layered U-shaped structures. This configuration serves to provide heat insulation and heat preservation. The evaporation section 6 and the temperature equalization tube 1 are in a vacuum state. When the evaporation section 6 is working, it generates heat energy. The temperature equalization tube 1 is used to concentrate the heat energy dissipated by the evaporation section 6 during operation around the evaporation section 6, ensuring better temperature uniformity of the evaporation section 6 and reducing heat loss.

[0040] In one specific embodiment of this utility model, a capillary structure 5 is further included, which is disposed on the inner wall of the evaporation section. The gravity heat pipe 2 achieves heat transfer through the capillary effect, and the capillary structure 5 is typically composed of porous materials or a coating to enhance the capillary effect of the liquid inside.

[0041] Specifically, such as Figure 3 As shown, the gravity heat pipe 2 achieves heat transfer through capillary effect. Therefore, a capillary structure 5 is provided on the inner wall of the evaporation section 6. Since the evaporation section 6 is spirally ascending, the capillary structure 5 is also spirally ascending. For practical application, the capillary structure 5 can be freely set or removed according to actual needs.

[0042] In a specific embodiment of this utility model, the sealing cap is a cylinder, and the material of the sealing cap is a durable high-temperature resistant material that can withstand long-term temperatures of not less than 300°C; the material of the gravity heat pipe is a metal material or composite material with a melting point of not less than 600°C, a thermal conductivity of not less than 40W / m·K, and strong corrosion resistance.

[0043] Specifically, the sealing cap 8 is circular in shape, similar to the cross-sectional shape of the glass tube 1. The sealing cap 8 is made of a durable high-temperature resistant material that can withstand temperatures of not less than 300℃ for extended periods, and features corrosion resistance, long service life, and resistance to high-temperature steam. The gravity heat pipe 2 is made of a metal or composite material with a melting point of not less than 600℃, a thermal conductivity of not less than 40W / m·K, and strong corrosion resistance because these materials have the characteristics of enhanced heat transfer efficiency, improved safety performance, corrosion resistance, long service life, and resistance to high-temperature steam.

[0044] When this utility model is used: a phase change medium is added to the evaporation section 6 of the gravity heat pipe 2. When the temperature of the evaporation section 6 reaches about 30°C, the medium in the evaporation section 6 begins to change, and the medium changes from liquid to gas. The gaseous medium rises from the evaporation section 6 to the condensation section 7 for condensation due to the pressure difference between the two ends. The condensed medium returns to the evaporation section 6 by gravity for circulation. The gravity heat pipe 2 then achieves heat transfer through the capillary effect of the capillary structure 5.

[0045] By setting the evaporation section 6 of the gravity heat pipe 2 as a spiral rising type, the heat transfer area is increased, the heat transfer fins are saved, and a double-vacuum glass tube 1 is set outside the evaporation section 6. The double-vacuum glass tube 1 allows the dissipated heat energy to be concentrated around the evaporation section 6. Moreover, the outer diameter of the spiral coil of the evaporation section 6 is close to the inner diameter of the glass tube 1, which increases the number of spiral coils of the evaporation section 6, further increasing the heat transfer area and improving working efficiency. While ensuring better temperature uniformity, it also saves the space occupied by the gravity heat pipe.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wingless double-vacuum glass-metal spiral heat exchanger, characterized in that, Including temperature-regulating tubes and gravity heat pipes; The gravity heat pipe is a hollow tubular structure and a sealed structure. A phase change medium is disposed inside the gravity heat pipe. The gravity heat pipe includes an evaporation section and a condensation section. The evaporation section is a hollow spiral structure with openings at the top and bottom. The condensation section is located at the top of the evaporation section, and the diameter of the condensation section is larger than the diameter of the evaporation section. The temperature equalization tube has a hollow and sealed internal structure. A through hole is provided at the top of the temperature equalization tube, through which the gravity heat pipe passes. The condensation section is located outside the temperature equalization tube, and the evaporation section is located inside the temperature equalization tube. There is a preset distance between the evaporation section and the inner wall of the temperature equalization tube.

2. The wingless double-vacuum glass-metal spiral heat exchanger according to claim 1, characterized in that, The evaporation section has a cylindrical spiral structure, and the outer diameter of the spiral of the evaporation section is greater than half the inner diameter of the temperature equalization tube, but smaller than the inner diameter of the temperature equalization tube.

3. The wingless double-vacuum glass-metal spiral heat exchanger according to claim 2, characterized in that, The condensation section is cylindrical, and the inner diameter of the evaporation section is larger than the diameter of the condensation section.

4. The wingless double-vacuum glass-metal spiral heat exchanger according to any one of claims 1-3, characterized in that, The temperature equalization tube includes a tube body and a sealing cap. The sealing cap is located on the top of the tube body, and a vacuum is provided between the evaporation section and the temperature equalization tube. The through hole is located above the sealing cap.

5. The wingless double-vacuum glass-metal spiral heat exchanger according to claim 4, characterized in that, The connection between the evaporation section and the condensation section is positioned opposite to the through hole, and the connection between the condensation section and the evaporation section is sealed to the through hole.

6. The wingless double-vacuum glass-metal spiral heat exchanger according to claim 5, characterized in that, Hot melt adhesive or a rubber ring is provided between the sealing cap and the tube body.

7. The wingless double-vacuum glass-metal spiral heat exchanger according to any one of claims 1-3, characterized in that, The vertical height of the evaporation section is higher than the height of the condensation section, and the height ratio of the evaporation section to the condensation section is 5:

1.

8. The wingless double-vacuum glass-metal spiral heat exchanger according to claim 4, characterized in that, The temperature equalization tube has a double-layered U-shaped structure, with a vacuum structure between the inner and outer layers.

9. The wingless double-vacuum glass-metal spiral heat exchanger according to any one of claims 1-3, characterized in that, It also includes a capillary tube, which has an internal gear-shaped structure. The outer side of the capillary tube is attached to the inner wall of the evaporation section, and the capillary tube has a spiral structure. The capillary tube is arranged correspondingly to the evaporation section.

10. The wingless double-vacuum glass-metal spiral heat exchanger according to claim 6, characterized in that, The sealing cap is cylindrical, and the material of the sealing cap is a durable high-temperature resistant material that can withstand long-term temperatures of not less than 300℃; the material of the gravity heat pipe is a metal or composite material with a melting point of not less than 600℃, a thermal conductivity of not less than 40W / m·K, and corrosion resistance.

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