A separated heat pipe cooling anti-blocking device with self-fouling function
By introducing a scaling component and an anti-clogging filter into the split heat pipe cooling device, the problems of scaling and clogging are solved, achieving self-cleaning and anti-clogging, improving cooling efficiency and equipment stability, and reducing maintenance costs.
Patent Information
- Application Number
- CN202522035697.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-22
AI Technical Summary
Existing split heat pipe cooling devices are prone to scaling and clogging during long-term operation, leading to a decrease in cooling efficiency. Existing solutions are either costly or complex, making them difficult to promote on a large scale.
It adopts a scale scraping component and an anti-clogging filter structure. The scale scraping component includes a cylindrical scale scraping block, a limiting ring and a counterweight block. The anti-clogging filter includes a double-layer metal filter screen. It achieves self-cleaning and anti-clogging through working fluid circulation.
It achieves automatic self-cleaning of the inner wall of the evaporative heat exchange tube, avoids pipe blockage, extends the maintenance cycle, reduces costs, maintains cooling efficiency at over 95%, and significantly improves the stability and economy of equipment operation.
Smart Images
Figure CN224681356U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of heat pipe cooling equipment, specifically to a separate heat pipe cooling anti-clogging device with simple self-cleaning function suitable for common scenarios such as industrial waste heat recovery and electronic equipment heat dissipation. Background Technology
[0002] Separate heat pipes are widely used in cooling systems in chemical, power, and electronics industries due to their ability to allow for long-distance arrangement of evaporation and condensation sections and their high heat exchange efficiency. Their working principle is as follows: the working fluid absorbs heat in the evaporation section and evaporates into a gaseous state. It then rises through a riser pipe to the condensation section, condenses into a liquid state, and flows back to the evaporation section through a downcomer, forming a circulating cooling cycle. However, in long-term operation, existing separate heat pipe cooling devices may introduce trace impurities (such as heat source medium permeation or slight degradation products of the working fluid) into the circulating working fluid. These impurities adhere to the inner wall of the evaporation heat exchanger tubes, forming scale, increasing thermal resistance, and significantly reducing cooling efficiency over time.
[0003] Current methods for addressing scaling and clogging mostly involve periodic shutdowns for manual cleaning, which not only increases maintenance costs and workload but also affects production continuity. Some devices with scaling functions are complex and costly, making large-scale application difficult. Therefore, developing a simple, low-cost, and self-cleaning, anti-clogging, separate heat pipe cooling device has become an urgent problem to be solved. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a separate heat pipe cooling anti-clogging device with self-cleaning function, so as to realize automatic self-cleaning of the inner wall of the evaporation heat exchange tube and facilitate maintenance.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a split heat pipe cooling anti-clogging device with self-cleaning function, wherein the evaporation unit and the condensation unit are connected through a working fluid circulation unit; The self-cleaning and anti-clogging unit includes a scraping component and an anti-clogging filter. The evaporation unit includes an evaporation shell and an evaporation heat exchange tube disposed inside the evaporation shell; the evaporation heat exchange tube is provided with a scale removal component; The condensation unit includes a condensation shell and condensation heat exchange tubes disposed inside the condensation shell; The working fluid circulation unit includes a riser connecting the evaporation heat exchanger tube and the condensation heat exchanger tube, a downcomer connecting the condensation heat exchanger tube and the evaporation heat exchanger tube, and a working fluid replenishment tank connected to the downcomer tube; the riser tube is equipped with an anti-clogging filter screen in the middle.
[0006] Furthermore, the scraping assembly includes a cylindrical scraping block, two limiting rings, and a counterweight; the diameter of the scraping block is 0.5 mm smaller than the inner diameter of the evaporator heat exchange tube, and a working fluid flow hole is opened in the center, with the outer wall being frosted; the limiting rings are fixed to the inner side of the tube openings at both ends of the evaporator heat exchange tube, and their inner diameter is 1 mm larger than the diameter of the scraping block; the counterweight is fixed to the center of the lower end face of the scraping block by a short plastic rod.
[0007] Furthermore, the anti-clogging filter screen includes a filter screen shell and an internal double-layer metal filter screen, and the filter screen shell is detachably connected to the riser pipe via a flange.
[0008] Furthermore, the outer pore diameter of the metal filter is 1 mm, and the inner pore diameter is 0.5 mm.
[0009] The beneficial effects of this utility model are: it has a simple structure, low cost, and convenient maintenance, and is suitable for various industrial scenarios that require efficient cooling and are prone to dirt buildup. Attached Figure Description
[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Figure 2 This is a schematic diagram of the scraping component of this utility model.
[0013] Figure 3 This is a schematic diagram of the anti-clogging filter of this utility model. Detailed Implementation
[0014] The technical solution of this utility model will be clearly and completely described below through specific embodiments.
[0015] refer to Figures 1-3 This utility model provides a separate heat pipe cooling anti-clogging device with self-cleaning function, comprising an evaporation unit 1, a condensation unit 2, a working fluid circulation unit, and a self-cleaning and anti-clogging unit. Evaporation unit 1 and condensation unit 2 are connected through working fluid circulation unit; self-cleaning and anti-clogging unit includes a scraping component 41 and an anti-clogging filter 42.
[0016] Evaporation unit 1 is used to absorb heat from the medium to be cooled, causing the working fluid to evaporate. Evaporation unit 1 is vertically arranged and includes an evaporation shell 11 and an evaporation heat exchange tube 12. The evaporation heat exchange tube 12 is installed inside the evaporation shell 11, and the medium to be cooled flows inside the evaporation shell 11, exchanging heat with the evaporation heat exchange tube 12.
[0017] The evaporation heat exchange tube 12 is equipped with a scale removal component 41, which can remove scale from the inner wall of the tube in real time during the flow of the working fluid.
[0018] The scaling component 41 includes a cylindrical scaling block 411, two limiting rings 412, and a counterweight 413. The diameter of the scaling block 411 is 0.5 mm smaller than the inner diameter of the evaporator heat exchange tube 12. The scaling block 411 has a working fluid flow hole 4111 in the center for the working fluid to flow through. The outer wall of the scaling block 411 is frosted. The limiting rings 412 are fixed to the inner side of the tube openings at both ends of the evaporator heat exchange tube 12. The inner diameter of the limiting rings 412 is 1 mm larger than the diameter of the scaling block 411. The counterweight 413 is fixed to the center of the lower end face of the scaling block 411 by a short plastic rod 414. Due to the impact force generated by the flow of the working fluid and the gravity of the counterweight 413, the scraper block 411 can move up and down inside the evaporation heat exchange tube 12. The frosted outer wall can effectively scrape off the scale on the inner wall of the tube. The limiting ring 412 can prevent the scraper block 411 from falling out from both ends of the evaporation heat exchange tube 12, while not affecting the flow of the working fluid.
[0019] The condensing unit 2 is used to condense the evaporated working fluid vapor into a liquid and release heat. The condensing unit 2 includes a condensing shell 21 and a condensing heat exchange tube 22 disposed inside the condensing shell 21; the cooling medium (such as cooling water or cold air) flows inside the condensing shell 21 and exchanges heat with the working fluid vapor in the condensing heat exchange tube 22, causing the working fluid vapor to condense into a liquid.
[0020] The working fluid circulation unit realizes the circulation of the working fluid between the evaporation unit 1 and the condensation unit 2. It is located above the evaporation unit 1 and includes a riser pipe 31, a downcomer pipe 32, and a working fluid replenishment tank 33. One end of the riser pipe 31 is connected to the outlet of the evaporation heat exchange tube 12, and the other end is connected to the inlet of the condensation heat exchange tube 22. It is used to transport the working fluid vapor generated by evaporation in the evaporation heat exchange tube 12 to the condensation heat exchange tube 22. One end of the downcomer pipe 32 is connected to the outlet of the condensation heat exchange tube 22, and the other end is connected to the inlet of the evaporation heat exchange tube 12. It is used to return the condensed working fluid liquid to the evaporation heat exchange tube 12. The working fluid replenishment tank 33 is connected to the downcomer pipe 32 and can replenish the working fluid into the system to maintain the stability of the working fluid circulation. A metal branch pipe (made of the same material as the downcomer, such as 304 stainless steel) with a diameter of 1 / 3 to 1 / 2 of the main downcomer pipe is welded to the main downcomer pipe 32. The branch pipe is inclined upward at a 45°-60° angle to the main downcomer pipe. The inclined design can prevent the working medium in the downcomer from flowing back to the replenishment tank 33 due to gravity, and at the same time facilitate the working medium to flow into the downcomer by gravity during replenishment. The branch pipe is connected to the outlet of the working medium replenishment tank 33. A shut-off valve and a check valve are connected in series on the branch pipe.
[0021] The anti-clogging filter 42 installed in the middle of the riser pipe 31 can filter impurities carried in the working fluid steam and prevent pipeline blockage. Preferably, the riser pipe 31 is provided with a detachable straight pipe section 311, and the two ends of the straight pipe section are connected to the riser pipe 31 through flanges. The anti-clogging filter 42 is installed in the straight pipe section.
[0022] The anti-clogging filter 42 includes a filter housing 421 and a double-layer metal filter 422 disposed inside the filter housing 421. The filter housing 421 is detachably connected to the riser pipe 31 via a flange 423. The double-layer metal filter 422 of the anti-clogging filter 42 can filter impurities in stages: the outer 1mm pore size filter filters larger impurities, and the inner 0.5mm pore size filter filters fine impurities, resulting in good filtration efficiency. The detachable connection of the filter housing 421 to the riser pipe 31 via the flange 423 facilitates regular disassembly, cleaning, or replacement of the filter.
[0023] When the device is in operation, the medium to be cooled enters the evaporator shell 11 and exchanges heat with the working fluid in the evaporator heat exchange tube 12. After absorbing heat, the working fluid evaporates into steam. Under the action of pressure difference, the steam flows through the riser tube 31 to the condenser heat exchange tube 22. When it flows through the anti-clogging filter 42, impurities are filtered by the double-layer metal filter 422. After the steam enters the condenser heat exchange tube 22, it exchanges heat with the cooling medium in the condenser shell 21, releases heat and condenses into liquid. The liquid flows back to the evaporator heat exchange tube 12 through the downcomer tube 32, completing the working fluid cycle. During the working fluid circulation process, the scale scraper 411 inside the evaporator heat exchange tube 12 moves up and down under the impact force of the working fluid flow and the gravity of the counterweight 413, scraping away the scale buildup on the inner wall of the tube in real time. If the working fluid in the system is insufficient, it can be replenished through the working fluid replenishment tank 33. The anti-clogging filter 42 can be removed periodically by disassembling the flange 423 to clean or replace it, ensuring smooth working fluid circulation.
[0024] The device in this embodiment was applied to the wastewater cooling system of a chemical enterprise. After 6 months of operation, there was no obvious scaling on the inner wall of the evaporation heat exchange tube 12, and no blockage in the riser tube 31. The heat exchange efficiency remained above 95% of the initial efficiency. Compared with the traditional split heat pipe cooling device, the maintenance cycle was extended by 3 times and the maintenance cost was reduced by 60%, which significantly improved the stability and economy of the equipment operation.
[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.
Claims
1. A split-type heat pipe cooling anti-clogging device with self-cleaning function, characterized in that: It includes an evaporation unit (1), a condensation unit (2), a working fluid circulation unit, and a self-cleaning and anti-clogging unit; The evaporation unit (1) and the condensation unit (2) are connected through a working fluid circulation unit; The self-cleaning and anti-clogging unit includes a scraping component (41) and an anti-clogging filter (42). The evaporation unit (1) includes an evaporation shell (11) and an evaporation heat exchange tube (12) disposed inside the evaporation shell (11); the evaporation heat exchange tube (12) is provided with a scale scraping assembly (41). The condensation unit (2) includes a condensation shell (21) and a condensation heat exchange tube (22) disposed inside the condensation shell (21). The working fluid circulation unit includes a riser (31) connecting the evaporation heat exchanger (12) and the condensation heat exchanger (22), a downcomer (32) connecting the condensation heat exchanger (22) and the evaporation heat exchanger (12), and a working fluid replenishment tank (33) connected to the downcomer (32); the riser (31) is provided with an anti-clogging filter (42) in the middle.
2. The self-cleaning, descaling, anti-clogging device for split heat pipe cooling according to claim 1, characterized in that: The scraping assembly (41) includes a cylindrical scraping block (411), two limiting rings (412), and a counterweight (413). The diameter of the scraping block (411) is 0.5 mm smaller than the inner diameter of the evaporation heat exchange tube (12). The scraping block (411) has a working fluid flow hole (4111) in the center for the working fluid to flow through. The outer wall of the scraping block (411) is frosted. The limiting rings (412) are fixed inside the pipe openings at both ends of the evaporation heat exchange tube (12). The inner diameter of the limiting rings (412) is 1 mm larger than the diameter of the scraping block (411). The counterweight (413) is fixed to the center of the lower end face of the scraping block (411) by a plastic short rod (414).
3. A separate heat pipe cooling anti-clogging device with self-cleaning function according to claim 1, characterized in that: The anti-clogging filter (42) includes a filter shell (421) and a double-layer metal filter (422) disposed inside the filter shell (421). The filter shell (421) is detachably connected to the riser pipe (31) via a flange (423).
4. A separate heat pipe cooling anti-clogging device with self-cleaning function according to claim 3, characterized in that: The outer layer of the double-layer metal filter (422) has a pore size of 1 mm, and the inner layer has a pore size of 0.5 mm.