A loop heat pipe structure

Abstract

This utility model belongs to the field of heat dissipation technology, specifically relating to a loop heat pipe structure, including an evaporator, a condenser, and a liquid receiver. A liquid pipeline connects the condenser, liquid receiver, and evaporator, and the liquid pipeline contains a working fluid that circulates within the loop heat pipe structure. The evaporator is also connected to the condenser via a steam pipeline. A spiral guide vane is provided on the inner wall of the steam pipeline, and a cooling pipeline is coaxially fitted on the outer side of the steam pipeline to form a cooling channel. The cooling pipeline is connected to a cooling device and a circulating pump via a coolant pipeline. This utility model reduces steam flow resistance and improves condensation efficiency by setting spiral guide vanes within the steam pipeline. Especially in vertical pipe sections, it avoids localized overheating caused by steam stagnation. Furthermore, the cooling channel actively dissipates heat, preventing heat accumulation on the pipe wall and reducing the range of steam temperature fluctuations.

Description

Technical Field

[0001] This utility model belongs to the field of heat dissipation technology, specifically relating to a loop heat pipe structure. Background Technology

[0002] A loop heat pipe is a closed-loop heat pipe, generally consisting of an evaporator, a condenser, a liquid receiver, and vapor and liquid lines. Its working principle is as follows: a heat load is applied to the evaporator, causing the working fluid to evaporate on the outer surface of the evaporator capillary wick. The generated vapor flows out from the vapor channel into the vapor line, then enters the condenser, condenses into liquid, and is subcooled. The returning liquid flows through the liquid line into the liquid main channel to replenish the evaporator capillary wick. This cycle continues, driven by the capillary pressure generated by the evaporator capillary wick, requiring no external power. Because the condensation and evaporation sections are separate, loop heat pipes are widely used in comprehensive energy applications and waste heat recovery. In the prior art, utility model patent CN 218120714 U discloses a loop heat pipe with particularly high-efficiency heat dissipation. This utility model uses a vacuum cavity for insulation to reduce heat loss, but it does not solve the efficiency reduction caused by vapor flow resistance. Especially during long-distance transmission, vapor stagnation can easily cause localized overheating, affecting the stability of heat dissipation. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the prior art, the present invention provides a loop heat pipe structure to solve the problems in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a loop heat pipe structure, including an evaporator, a condenser, and a liquid receiver, wherein a liquid pipeline connects the condenser, the liquid receiver, and the evaporator, and the liquid pipeline contains a working fluid that can circulate inside the loop heat pipe structure. The evaporator is also connected to the condenser through a steam pipeline, and a spiral guide vane is provided on the inner wall of the steam pipeline. A cooling pipeline is coaxially sleeved on the outer side of the steam pipeline to form a cooling channel, and the cooling pipeline is connected to a cooling device and a circulating pump through a coolant pipeline.

[0005] Preferably, the steam pipeline is L-shaped, with spiral guide vanes installed inside the vertical section of the steam pipeline, and cooling pipelines installed outside the horizontal section of the steam pipeline. This optimizes the steam flow in the vertical section and enhances the thermal management of the horizontal section, adapting to complex spatial layouts.

[0006] Preferably, the coolant pipeline has a coolant inlet and a coolant outlet, which are respectively connected to both ends of the cooling pipeline to ensure the efficient circulation operation of the active cooling system.

[0007] Preferably, the cooling pipes are filled with a heat-conducting medium, which significantly improves the heat transfer efficiency within the cooling channels.

[0008] Preferably, the cooling device is a liquid-cooled radiator, and forms a closed-loop circulation system with the circulating pump to achieve stable circulation control of the cooling medium and enhance system reliability.

[0009] Preferably, a sealing gasket is provided at the connection between the cooling pipeline and the steam pipeline to reduce the risk of coolant leakage and ensure the safety of long-term operation.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] By installing spiral guide vanes inside the steam pipeline, the steam flow resistance is reduced and the condensation efficiency is improved. Especially in vertical pipe sections, local overheating caused by steam stagnation can be avoided. In addition, cooling channels are set up to actively dissipate heat and prevent heat accumulation on the pipe wall, thereby reducing the range of steam temperature fluctuations. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0014] Figure 3 This is a schematic diagram of the spiral guide vane of this utility model;

[0015] Figure 4 for Figure 1 Enlarged view of section B in the middle.

[0016] The reference numerals in the accompanying drawings include:

[0017] 1-Evaporator, 2-Condenser, 3-Liquid receiver, 4-Liquid pipeline, 5-Steam pipeline, 51-Spiral guide vane, 6-Cooling pipeline, 61-Coolant pipeline, 62-Sealing gasket, 7-Cooling device, 8-Circulating pump. Detailed Implementation

[0018] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it 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 based on the specific circumstances.

[0022] like Figure 1-4 As shown, this utility model discloses a loop heat pipe structure, including an evaporator 1, a condenser 2, and a liquid receiver 3. A liquid pipe 4 connects the condenser 2, the liquid receiver 3, and the evaporator 1. The liquid pipe 4 contains a working fluid that can circulate inside the loop heat pipe structure. The evaporator 1 is also connected to the condenser 2 through a steam pipe 5. The inner wall of the steam pipe 5 is provided with a spiral guide vane 51. A cooling pipe 6 is coaxially sleeved on the outer side of the steam pipe 5 to form a cooling channel. The cooling pipe 6 is connected to a cooling device 7 and a circulating pump 8 through a coolant pipe 61.

[0023] Furthermore, the steam pipe 5 is L-shaped, with the spiral guide vane 51 installed inside the vertical section of the steam pipe 5, and the cooling pipe 6 installed outside the horizontal section of the steam pipe 5. The spiral guide vane 51 only covers the inner wall surface of the vertical section of the steam pipe 5, while the cooling pipe 6 completely wraps around the outer wall of the horizontal section of the steam pipe 5.

[0024] Furthermore, the coolant line 61 has a coolant inlet and a coolant outlet, which are respectively connected to both ends of the coolant line 6. The coolant inlet is fixedly connected to the first end of the coolant line 6, and the coolant outlet is fixedly connected to the last end of the coolant line 6.

[0025] Furthermore, the cooling pipe 6 is filled with a heat-conducting medium, which is liquid and completely fills the inner cavity of the cooling pipe 6.

[0026] Furthermore, the cooling device 7 is a liquid-cooled radiator and forms a closed-loop circulation system with the circulating pump 8. The outlet of the cooling device 7 is connected to the inlet of the circulating pump 8 through a pipe, and the outlet of the circulating pump 8 is connected to the coolant inlet of the coolant pipeline 61 through a pipe.

[0027] Furthermore, a sealing gasket 62 is provided at the connection between the cooling pipe 6 and the steam pipe 5, wherein the sealing gasket 62 is embedded in the axial joint between the cooling pipe 6 and the steam pipe 5.

[0028] The working principle of this invention is as follows: When the evaporator 1 absorbs heat from the heat source, the internal working fluid evaporates at high temperature and forms steam, which enters the steam pipe 5. As the steam flows within the steam pipe 5, the spiral guide vanes 51 installed in the vertical section of the steam pipe 5 guide the steam to swirl and accelerate its movement, preventing steam stagnation. The steam flows to the condenser 2 and condenses into liquid, flowing through the liquid pipe 4 into the liquid storage tank 3 for temporary storage, and finally returning to the evaporator 1 to complete the cycle. Simultaneously, the circulating pump 8 drives the coolant to be output from the cooling device 7, entering the cooling channel formed by the cooling pipe 6 through the coolant inlet of the coolant pipe 61. After absorbing heat from the wall of the steam pipe 5, the coolant flows back to the cooling device 7 from the coolant outlet of the coolant pipe 61 to dissipate heat. The heat-conducting medium filled in the cooling pipe 6 enhances heat transfer, and the sealing gasket 62 ensures the sealing of the connection between the cooling pipe 6 and the steam pipe 5, thereby maintaining the temperature stability within the steam pipe 5.

[0029] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software or methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A loop heat pipe structure, comprising an evaporator (1), a condenser (2), and a liquid receiver (3), characterized in that: A liquid pipeline (4) connects the condenser (2), the liquid reservoir (3), and the evaporator (1). The liquid pipeline (4) contains a working fluid that can circulate inside the loop heat pipe structure. The evaporator (1) is also connected to the condenser (2) through a steam pipeline (5). The inner wall of the steam pipeline (5) is provided with a spiral guide vane (51). A cooling pipeline (6) is coaxially sleeved on the outside of the steam pipeline (5) to form a cooling channel. The cooling pipeline (6) is connected to the cooling device (7) and the circulating pump (8) through a coolant pipeline (61).

2. The loop heat pipe structure according to claim 1, characterized in that: The steam pipe (5) is L-shaped, with a spiral guide vane (51) installed in the vertical section of the steam pipe (5) and a cooling pipe (6) fitted on the outside of the horizontal section of the steam pipe (5).

3. The loop heat pipe structure according to claim 1, characterized in that: The coolant pipeline (61) has a coolant inlet and a coolant outlet, which are respectively connected to both ends of the coolant pipeline (6).

4. The loop heat pipe structure according to claim 1, characterized in that: The cooling pipe (6) is filled with a heat-conducting medium.

5. A loop heat pipe structure according to claim 1, characterized in that: The cooling device (7) is a liquid-cooled radiator and forms a closed-loop circulation system with the circulating pump (8).

6. A loop heat pipe structure according to claim 1, characterized in that: A sealing gasket (62) is provided at the connection between the cooling pipe (6) and the steam pipe (5).

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