Flat plate pulsating heat pipe cooling structure

Abstract

The utility model belongs to the technical field of pulsating heat pipes, and particularly relates to a flat plate pulsating heat pipe cooling structure which comprises a flat plate cooling frame, the flat plate cooling frame is of a wave-shaped structure, a pulsating flow channel is arranged in an inner cavity of the flat plate cooling frame, the pulsating flow channel is of a three-dimensional structural design, and the pulsating flow channel is bent along with the wave shape of the flat plate cooling frame. An upper fixing clamp is welded to the outer surface of the flat plate cooling frame, a lower fixing clamp is welded to the lower portion of the upper fixing clamp, and condensation cooling fins are welded to the surface of the flat plate cooling frame through laser. The evaporation section and the condensation section are both in a wave shape, the condensation heat dissipation fins are used for increasing the contact area of the condensation section and cooling water in the cooling pipe, when the cooling water moves in the cooling pipe, the wave-shaped structure can increase disturbance of the cooling water, turbulent flow is formed, and the heat transfer efficiency is further improved; meanwhile, the contact area of the evaporation section and lubricating oil is increased through the evaporation heat collection fins, the heat transfer efficiency of the pulsating heat pipe is improved, the cooling speed of the lubricating oil is increased, and cooling of the coal mining machine rocker arm is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulsating heat pipes, in particular to a flat pulsating heat pipe cooling structure. Background Technique

[0002] A shearer is a coal mining device. The shearer products sold on the market are gradually developing towards high power and intelligence, and stable quality, high yield and high efficiency are always the ultimate goals pursued by customers. However, with the increase of the cutting power of the shearer, the heat generation of the gearbox in the rocker arm housing becomes increasingly serious. Therefore, a flat heat pipe is installed on the rocker arm of the shearer for heat dissipation.

[0003] Currently, the invention patent with the publication number of CN116123903A discloses a flat pulsating heat pipe and a processing method, belonging to the technical field of pulsating heat pipes, including a plate body and a pulsating heat pipe flow channel opened inside the plate body. The pulsating heat pipe flow channel is filled with a working medium. The pulsating heat pipe flow channel includes a plurality of flow enhancement channels and flow weakening channels, and the flow enhancement channels and the flow weakening channels are arranged alternately. A branch flow channel is arranged between adjacent flow enhancement channels and flow weakening channels. One end of the branch flow channel is communicated with the adiabatic section of the flow enhancement channel, and the other end of the branch flow channel is communicated with the evaporation section of the flow weakening channel. By setting the branch flow channel, the bubbles in the evaporation section of the flow weakening channel are divided, so that the flow pressure difference between the flow enhancement channel and the flow weakening channel increases faster, realizing the directional distribution of the working medium flow pressure, breaking the pressure balance state faster, enabling the working medium in the flat pulsating heat pipe to start circulating faster and dissipating heat more timely.

[0004] The existing flat pulsating heat pipe has a flat structure with a smooth surface. When the condensation section exchanges heat with the coolant in the cooling pipe, the heat exchange efficiency is slow. At the same time, the heat collection speed of the evaporation section for lubricating oil is also slow, resulting in a low cooling efficiency for the lubricating oil during use. To solve the above problems, a flat pulsating heat pipe cooling structure is proposed in this application. Content of the Utility Model

[0005] (I) Purpose of the Utility Model

[0006] To solve the technical problems existing in the background art, the present utility model proposes a flat pulsating heat pipe cooling structure. Both the evaporation section and the condensation section are wavy. The condensation heat dissipation fins are used to increase the contact area between the condensation section and the cooling water in the cooling pipe. When the cooling water moves in the cooling pipe, the wavy structure can increase the disturbance of the cooling water, form turbulence, and further improve the heat transfer efficiency. At the same time, the evaporation heat collection fins increase the contact area between the evaporation section and the lubricating oil. The pulsating flow channel bends along with the waveform of the flat cooling frame. The pulsating flow channel is filled with working fluids such as water, ethanol or acetone, which promotes the pulsation intensity of the working fluid, improves the heat transfer efficiency of the pulsating heat pipe, and enhances the cooling speed of the lubricating oil, so as to solve the problems proposed in the background art.

[0007] (II) Technical Solution

[0008] To solve the above technical problems, the present utility model provides a flat pulsating heat pipe cooling structure, including a flat cooling frame. The flat cooling frame has a wavy structure. The inner cavity of the flat cooling frame is provided with a pulsating flow channel. The pulsating flow channel adopts a three-dimensional structure design, and the pulsating flow channel bends along with the waveform of the flat cooling frame;

[0009] The outer surface of the flat cooling frame is welded with an upper fixing clip, and a lower fixing clip is welded below the upper fixing clip;

[0010] The surface of the flat cooling frame is laser welded with condensation heat dissipation fins, and evaporation heat collection fins are arranged on one side of the condensation heat dissipation fins.

[0011] Preferably, the bottom surface of the flat cooling frame is the condensation section, and the condensation section is located below the lower fixing clip.

[0012] Preferably, the top surface of the flat cooling frame is the evaporation section, and the evaporation section is located above the upper fixing clip.

[0013] Preferably, the connection part between the evaporation section and the condensation section is a welding section, and the welding section is located between the upper fixing clip and the lower fixing clip.

[0014] Preferably, the condensation heat dissipation fins are located on the surface of the condensation section, and the evaporation heat collection fins are located on the surface of the evaporation section.

[0015] Preferably, a liquid level observation window is embedded at the position corresponding to the liquid replenishing pipe on the surface of the flat cooling frame.

[0016] Preferably, one end of the pulsating flow channel is conductively connected to a liquid replenishing pipe. The liquid replenishing pipe is located at one end of the upper surface of the flat cooling frame, and a closing valve is installed on the liquid replenishing pipe.

[0017] The above technical solution of the present utility model has the following beneficial technical effects:

[0018] 1. In the present utility model, both the evaporation section and the condensation section are wavy. The condensation heat dissipation fins are used to increase the contact area between the condensation section and the cooling water in the cooling pipe. When the cooling water moves in the cooling pipe, the wavy structure can increase the disturbance of the cooling water, form turbulence, and further improve the heat transfer efficiency. At the same time, the evaporation heat collection fins increase the contact area between the evaporation section and the lubricating oil. The pulsating flow channel bends along with the waveform of the flat cooling rack. A working medium such as water, ethanol or acetone is filled in the pulsating flow channel, which promotes the pulsation intensity of the working medium, improves the heat transfer efficiency of the pulsating heat pipe, and enhances the cooling speed of the lubricating oil.

[0019] 2. In the present utility model, the liquid level observation window can observe the industrial capacity in the pulsating flow channel. When the working medium is consumed, the working medium can be replenished in time through the liquid replenishing pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of a flat pulsating heat pipe cooling structure of the present utility model;

[0021] Figure 2 is the top view structural schematic diagram of a flat pulsating heat pipe cooling structure of the present utility model;

[0022] Figure 3 is the cross-sectional structural schematic diagram of a flat pulsating heat pipe cooling structure of the present utility model;

[0023] Figure 4 is the pulsating flow channel structural schematic diagram of a flat pulsating heat pipe cooling structure of the present utility model.

[0024] REFERENCE NUMERALS:

[0025] 1. Flat cooling rack; 2. Upper fixing clip; 3. Lower fixing clip; 4. Evaporation section; 5. Welding section; 6. Condensation section; 7. Condensation heat dissipation fins; 8. Evaporation heat collection fins; 9. Pulsating flow channel; 10. Liquid level observation window; 11. Liquid replenishing pipe; 12. Closing valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0027] As Figures 1-4As shown in the figure, a flat pulsating heat pipe cooling structure proposed by the present utility model includes a flat cooling frame 1. The flat cooling frame 1 has a wavy structure. A pulsating flow channel 9 is provided inside the flat cooling frame 1. The pulsating flow channel 9 adopts a three-dimensional structure design, and the pulsating flow channel 9 bends along with the waveform of the flat cooling frame 1;

[0028] An upper fixing clip 2 is welded on the outer surface of the flat cooling frame 1, and a lower fixing clip 3 is welded below the upper fixing clip 2;

[0029] Condensing heat dissipation fins 7 are laser welded on the surface of the flat cooling frame 1. An evaporation heat collection fin 8 is provided on one side of the condensing heat dissipation fin 7. The bottom of the surface of the flat cooling frame 1 is a condensing section 6. The condensing section 6 is located below the lower fixing clip 3. The top of the surface of the flat cooling frame 1 is an evaporation section 4. The evaporation section 4 is located above the upper fixing clip 2. The connection part between the evaporation section 4 and the condensing section 6 is a welding section 5. The welding section 5 is located between the upper fixing clip 2 and the lower fixing clip 3.

[0030] It should be noted that the flat cooling frame 1 is fixed by the upper fixing clip 2 and the lower fixing clip 3 respectively. The upper fixing clip 2 is welded on the outer wall surface of the cooling pipe, and the lower fixing clip 3 is welded on the inner wall surface of the cooling pipe. The combination of the upper fixing clip 2 and the lower fixing clip 3 can increase the welding area between the flat cooling frame 1 and the cooling pipe, thereby improving the welding stability of the flat cooling frame 1. The condensing section 6 of the flat cooling frame 1 is inserted into the inner cavity of the cooling pipe, and the evaporation section 4 is located on the outer wall of the cooling pipe. Both the evaporation section 4 and the condensing section 6 are wavy. Condensing heat dissipation fins 7 are equidistantly arranged on the surface of the condensing section 6, which can increase the contact area between the condensing section 6 and the cooling water in the cooling pipe. When the cooling water moves in the cooling pipe, the wavy structure can increase the disturbance of the cooling water and form a turbulent flow, further improving the heat transfer efficiency. At the same time, evaporation heat collection fins 8 are equidistantly arranged on the surface of the evaporation section 4, which can increase the contact area between the evaporation section 4 and the lubricating oil. The pulsating flow channel 9 bends along with the waveform of the flat cooling frame 1. Working fluids such as water, ethanol or acetone are filled in the pulsating flow channel 9, which promotes the pulsation intensity of the working fluid, improves the heat transfer efficiency of the pulsating heat pipe, and enhances the cooling speed of the lubricating oil.

[0031] In this embodiment, as Figure 1 shown, the condensing heat dissipation fins 7 are located on the surface of the condensing section 6, and the evaporation heat collection fins 8 are located on the surface of the evaporation section 4.

[0032] It should be noted that the condensing heat dissipation fins 7 and the evaporation heat collection fins 8 can increase the contact area between the evaporation section 4 and the condensing section 6 and the coolant and the lubricating oil.

[0033] In this embodiment, as Figure 1As shown, a liquid level observation window 10 is embedded at a position corresponding to the position of the liquid supplement pipe 11 on the surface of the flat cooling rack 1. One end of the pulsating flow channel 9 is conductively connected to a liquid supplement pipe 11. The liquid supplement pipe 11 is located at one end of the upper surface of the flat cooling rack 1, and a shut-off valve 12 is installed on the liquid supplement pipe 11.

[0034] It should be noted that the liquid level observation window 10 can observe the industrial capacity in the pulsating flow channel 9. When the working medium is consumed, the working medium can be replenished in time through the liquid supplement pipe 11.

[0035] The working principle and usage process of the present utility model: The flat cooling rack 1 is fixed by an upper fixing clip 2 and a lower fixing clip 3 respectively. The upper fixing clip 2 is welded on the outer wall surface of the cooling pipe, and the lower fixing clip 3 is welded on the inner wall surface of the cooling pipe. By matching the upper fixing clip 2 and the lower fixing clip 3, the welding area between the flat cooling rack 1 and the cooling pipe can be increased, thereby improving the welding stability of the flat cooling rack 1. The condensation section 6 of the flat cooling rack 1 is inserted into the inner cavity of the cooling pipe, and the evaporation section 4 is located on the outer wall of the cooling pipe. Both the evaporation section 4 and the condensation section 6 are wavy. Condensation heat dissipation fins 7 are equidistantly arranged on the surface of the condensation section 6, which can increase the contact area between the condensation section 6 and the cooling water in the cooling pipe. When the cooling water moves in the cooling pipe, the wavy structure can increase the disturbance of the cooling water and form turbulence, further improving the heat transfer efficiency. At the same time, evaporation heat collection fins 8 are equidistantly arranged on the surface of the evaporation section 4, which can increase the contact area between the evaporation section 4 and the lubricating oil. The pulsating flow channel 9 bends along with the waveform of the flat cooling rack 1. Working media such as water, ethanol or acetone are filled in the pulsating flow channel 9 to promote the pulsation intensity of the working medium, improve the heat transfer efficiency of the pulsating heat pipe, enhance the cooling speed of the lubricating oil, and the liquid level observation window 10 can observe the industrial capacity in the pulsating flow channel 9. When the working medium is consumed, the working medium can be replenished in time through the liquid supplement pipe 11.

[0036] It should be understood that the above specific embodiments of the present utility model are only used for exemplary illustration or explanation of the principle of the present utility model, and do not constitute a limitation to the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present utility model shall be included within the protection scope of the present utility model. In addition, the appended claims of the present utility model are intended to cover all changes and modification examples falling within the scope and boundary of the appended claims or equivalent forms of such scope and boundary.

Claims

1. A flat plate pulsating heat pipe cooling structure, comprising a flat plate cooling frame (1), characterized in that: The flat plate cooling rack (1) has a wave-shaped structure, and a pulsating flow channel (9) is provided in the inner cavity of the flat plate cooling rack (1). The pulsating flow channel (9) adopts a three-dimensional structural design, and the pulsating flow channel (9) bends along the wave shape of the flat plate cooling rack (1); An upper fixing clip (2) is welded on the outer surface of the flat plate cooling rack (1), and a lower fixing clip (3) is welded below the upper fixing clip (2); The surface of the flat cooling rack (1) is laser welded with condensing heat dissipation fins (7), and one side of the condensing heat dissipation fins (7) is provided with evaporating heat collection fins (8).

2. A flat plate pulsating heat pipe cooling structure according to claim 1, characterized in that: The bottom of the surface of the flat cooling rack (1) is a condensation section (6), and the condensation section (6) is located below the lower fixing clamp (3).

3. A flat plate pulsating heat pipe cooling structure according to claim 2, characterized in that: The top of the surface of the flat cooling rack (1) is an evaporation section (4), and the evaporation section (4) is located above the upper fixing clamp (2).

4. A flat plate pulsating heat pipe cooling structure according to claim 3, characterized in that: The connection between the evaporation section (4) and the condensation section (6) is a welding section (5), and the welding section (5) is located between the upper fixing clamp (2) and the lower fixing clamp (3).

5. A flat plate pulsating heat pipe cooling structure according to claim 4, characterized in that: The condensing heat dissipation fins (7) are located on the surface of the condensing section (6), and the evaporating heat collection fins (8) are located on the surface of the evaporating section (4).

6. A flat plate pulsating heat pipe cooling structure according to claim 5, characterized in that: A liquid level observation window (10) is embedded on the surface of the flat cooling rack (1) at a position corresponding to the position of the liquid replenishing pipe (11).

7. A flat plate pulsating heat pipe cooling structure according to claim 6, characterized in that: One end of the pulsating flow channel (9) is connected to a liquid infusion tube (11), the liquid infusion tube (11) is located at one end of the upper surface of the flat plate cooling rack (1), and a closing valve (12) is installed on the liquid infusion tube (11).

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