Bidirectional separation type heat pipe heat exchange device based on evaporation end overflow liquid distribution

Abstract

The utility model discloses a bidirectional separation type heat pipe heat exchange device based on evaporation end overflow liquid distribution, and mainly relates to the field of heat pipe heat exchangers. Comprising a high-position heat exchange end and a low-position heat exchange end, the top of the high-position heat exchange end communicates with a first gas collecting pipe and a first liquid distributing pipe, the bottom of the high-position heat exchange end communicates with a first liquid collecting pipe, the top of the low-position heat exchange end communicates with a second gas collecting pipe and a second liquid distributing pipe, and the bottom of the low-position heat exchange end communicates with a second liquid collecting pipe; the second gas collecting pipe is communicated with the first gas collecting pipe through an ascending pipe, the first liquid collecting pipe is communicated with the second liquid distributing pipe through a first liquid pipe, and the second liquid collecting pipe is communicated with the first liquid distributing pipe through a second liquid pipe. The utility model has the beneficial effects that the heat exchange end can be an evaporation end, a condensation end or a combination of a plurality of heat exchange ends, can be used for coping with different meteorological conditions and different application scenes, greatly reduces the energy consumption of the system, is energy-saving and environment-friendly, and has good practicability.

Description

Technical Field

[0001] This utility model relates to the field of heat pipe heat exchangers, specifically a bidirectional separation heat pipe heat exchange device based on overflow liquid distribution at the evaporation end. Background Technology

[0002] Heat pipe heat exchangers can improve energy efficiency, effectively recover waste heat from industrial production processes, reuse previously wasted heat energy, thereby reducing the demand for external energy and lowering energy consumption.

[0003] In terms of energy conservation and emission reduction: the application of heat pipe heat exchangers enables waste heat recovery and utilization, reducing carbon emissions and other pollutant emissions during energy production, which is of positive significance for environmental protection. In terms of reducing production costs: enterprises can use recovered heat energy to preheat fresh air, heat materials, or generate steam, thereby saving energy costs for heating and reducing production and operating costs. Heat pipe heat exchangers can be used for cooling in large workshops, data centers, and other similar settings, reducing production and maintenance costs.

[0004] Currently, domestic heat pipe heat exchangers, including split heat pipe heat exchangers, can only achieve unidirectional heat exchange and cannot achieve multiple uses or combined applications with a single device. This results in significant limitations in practical applications and makes it difficult to cope with different meteorological conditions and different application scenarios. Utility Model Content

[0005] The purpose of this invention is to provide a bidirectional separation heat pipe heat exchange device based on overflow distribution at the evaporation end. Its heat exchange end can be an evaporation end, a condensation end, or a combination of multiple heat exchange ends. It can be used to cope with different meteorological conditions and different application scenarios, greatly reducing system energy consumption, saving energy and protecting the environment, and has good practicality.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A bidirectional separation heat pipe heat exchange device based on overflow liquid distribution at the evaporator end includes a high heat exchange end and a low heat exchange end. The top of the high heat exchange end is connected to a first gas collecting pipe and a first liquid distributing pipe, and the bottom of the high heat exchange end is connected to a first liquid collecting pipe. The top of the low heat exchange end is connected to a second gas collecting pipe and a second liquid distributing pipe, and the bottom of the low heat exchange end is connected to a second liquid collecting pipe. The second gas collecting pipe is connected to the first gas collecting pipe through a riser pipe. The first liquid collecting pipe is connected to the second liquid distributing pipe through a first liquid pipe. The second liquid collecting pipe is connected to the first liquid distributing pipe through a second liquid pipe. The first liquid pipe is also equipped with a first ball valve, and the second liquid pipe is also equipped with a second ball valve and a working fluid pump.

[0008] Furthermore, both the high-level heat exchange end and the low-level heat exchange end include multiple heat pipe base tubes, and multiple fins are provided along the axis on the outside of each heat pipe base tube. The top of the heat pipe base tube at the high-level heat exchange end is connected to the first gas collecting pipe and the first liquid distributing pipe, respectively, and the bottom of the heat pipe base tube at the high-level heat exchange end is connected to the first liquid collecting pipe. The top of the heat pipe base tube at the low-level heat exchange end is connected to the second gas collecting pipe and the second liquid distributing pipe, respectively, and the bottom of the heat pipe base tube at the low-level heat exchange end is connected to the second liquid collecting pipe.

[0009] Furthermore, both the high-end heat exchange end and the low-end heat exchange end are provided with an overflow liquid distribution device at their top. The top of the heat pipe base tube at the high-end heat exchange end is connected to the first gas collecting pipe and the first liquid distributing pipe respectively through the overflow liquid distribution device, and the top of the heat pipe base tube at the low-end heat exchange end is connected to the second gas collecting pipe and the second liquid distributing pipe respectively through the overflow liquid distribution device.

[0010] Furthermore, the overflow liquid distribution device includes an inlet pipe and an outlet pipe connected to the top of the heat pipe base tube. The bottom end of the outlet pipe penetrates the heat pipe base tube and is surrounded by a liquid-holding cylinder. The top of the liquid-holding cylinder is open, and the outlet of the inlet pipe connected to the heat pipe base tube corresponds to the top opening of the liquid-holding cylinder.

[0011] Furthermore, the liquid inlet pipe at the high heat exchange end is connected to the first liquid distribution pipe, the gas outlet pipe at the high heat exchange end is connected to the first gas collection pipe, the liquid inlet pipe at the low heat exchange end is connected to the second liquid distribution pipe, and the gas outlet pipe at the low heat exchange end is connected to the second gas collection pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This patented design, featuring high and low heat exchange ends, along with a liquid distribution pipe, a gas collection pipe, and another liquid distribution pipe, allows each heat exchange end to function as an evaporation end, a condensation end, or a combination of multiple heat exchange ends. This overcomes the limitation of current heat pipe heat exchangers that can only exchange heat in one direction. It is not restricted by the location of the application and can be used to cope with different meteorological conditions and application scenarios. It can utilize natural cold sources or recover waste heat resources for space cooling or heating, significantly reducing system energy consumption. It is energy-saving and environmentally friendly, has excellent practicality, and can generate good economic and social benefits. Attached Figure Description

[0014] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Appendix Figure 2 This is a schematic diagram of the overflow liquid distribution device of this utility model.

[0016] The labels shown in the attached diagram:

[0017] 1. High heat exchange end; 2. Low heat exchange end; 3. First gas collecting pipe; 4. First liquid distributing pipe; 5. First liquid collecting pipe; 6. Second gas collecting pipe; 7. Second liquid distributing pipe; 8. Second liquid collecting pipe; 9. Rising pipe; 10. First liquid pipe; 11. Second liquid pipe; 12. First ball valve; 13. Second ball valve; 14. Working fluid pump; 15. Heat pipe base pipe; 16. Fins; 17. Liquid inlet pipe; 18. Gas outlet pipe; 19. Liquid container. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0019] This utility model describes a bidirectional separation heat pipe heat exchange device based on overflow liquid distribution at the evaporator end. The main structure includes a high-level heat exchange end 1 and a low-level heat exchange end 2. Both the high-level heat exchange end 1 and the low-level heat exchange end 2 include multiple heat pipe base tubes 15. Multiple fins 16 are provided along the axis on the outer surface of each heat pipe base tube 15. The top of the heat pipe base tube 15 of the high-level heat exchange end 1 is connected to a first gas collecting pipe 3 and a first liquid distributing pipe 4, respectively. The bottom of the heat pipe base tube 15 of the high-level heat exchange end 1 is connected to a first liquid collecting pipe 5. The heat pipe base tube 15 of the low-level heat exchange end 2... The top of the heat pipe base pipe 15 is connected to the second gas collecting pipe 6 and the second liquid distributing pipe 7 respectively. The bottom of the heat pipe base pipe 15 at the lower heat exchange end 2 is connected to the second liquid collecting pipe 8. The second gas collecting pipe 6 is connected to the first gas collecting pipe 3 through the riser pipe 9. The first liquid collecting pipe 5 is connected to the second liquid distributing pipe 7 through the first liquid pipe 10. The second liquid collecting pipe 8 is connected to the first liquid distributing pipe 4 through the second liquid pipe 11. The first liquid pipe 10 is also equipped with a first ball valve 12. The second liquid pipe 11 is also equipped with a second ball valve 13 and a working fluid pump 14.

[0020] When the high heat exchange end 1 is used as the condensing end, the low heat exchange end 2 is used as the evaporating end. The first ball valve 12 is opened and the second ball valve 13 is closed. After the working fluid in the multiple heat pipe base tubes 15 of the low heat exchange end 2 absorbs heat, the working fluid evaporates from liquid to gas and enters the second gas collecting pipe 6 through the gas outlet pipe 18. Then, it enters the multiple heat pipe base tubes 15 of the high heat exchange end 1 through the riser pipe 9 and the first gas collecting pipe 3 of the high heat exchange end 1. After the working fluid is cooled by the external medium, it condenses into liquid working fluid in the high heat exchange end 1 and enters the first liquid collecting pipe 5. It then returns to the multiple heat pipe base tubes 15 of the low heat exchange end 2 through the first liquid pipe 10 and the second liquid distributing pipe 7 of the low heat exchange end 2. The flow of the working fluid between the high heat exchange end 1 and the low heat exchange end 2 can be realized by utilizing the height difference between the high heat exchange end 1 and the low heat exchange end 2.

[0021] When the high heat exchange end 1 is used as the evaporation end, the low heat exchange end 2 is used as the condensation end. The first ball valve 12 is closed and the second ball valve 13 is opened. After the working fluid in the multiple heat pipe base tubes 15 of the high heat exchange end 1 absorbs heat, the working fluid evaporates from liquid to gas and enters the first gas collecting pipe 3 through the gas outlet pipe 18. Then, it enters the multiple heat pipe base tubes 15 of the low heat exchange end 2 through the riser pipe 9 and the second gas collecting pipe 6 of the low heat exchange end 2. After the working fluid is cooled by the external medium, it condenses into liquid working fluid in the low heat exchange end 2 and enters the second liquid collecting pipe 8. Under the action of the working fluid pump 14, it returns to the multiple heat pipe base tubes 15 of the high heat exchange end 1 through the second liquid pipe 11 and the first liquid distribution pipe 4 of the high heat exchange end 1.

[0022] Preferably, both the top of the heat pipe base tube 15 at the high heat exchange end 1 and the low heat exchange end 2 are provided with an overflow liquid distribution device. The overflow liquid distribution device includes an inlet pipe 17 and an outlet pipe 18 connected to the top of the heat pipe base tube 15. The bottom end of the outlet pipe 18 penetrates the heat pipe base tube 15, and the portion inside the heat pipe base tube 15 surrounds a liquid-holding cylinder 19. That is, the bottom end of the outlet pipe 18 penetrates the bottom plate of the liquid-holding cylinder 19. The top of the liquid-holding cylinder 19 is open, and the bottom surrounds the outlet pipe 18. The outer wall area is sealed. The liquid outlet of the inlet pipe 17, which is connected to the heat pipe base tube 15, corresponds to the top opening of the liquid container 19. The liquid working fluid enters the heat pipe base tube 15 through the inlet pipe 17 and then flows into the liquid container 19. The inlet pipes 17 of the multiple heat pipe base tubes 15 at the high heat exchange end 1 are respectively connected to the first distribution pipe 4, so that the liquid working fluid can enter the heat pipe base tube 15 through the inlet pipe 17. The outlet pipes 18 of the multiple heat pipe base tubes 15 at the high heat exchange end 1 are respectively connected to the first distribution pipe 4. The gas collecting pipe 3 is connected, allowing the gaseous medium to be discharged from the heat pipe base tube 15 through the gas outlet pipe 18. The liquid inlet pipes 17 of the multiple heat pipe base tubes 15 at the lower heat exchange end 2 are respectively connected to the second liquid distribution pipe 7, allowing the liquid working medium to enter the heat pipe base tube 15 through the liquid inlet pipe 17. The gas outlet pipes 18 of the multiple heat pipe base tubes 15 at the lower heat exchange end 2 are respectively connected to the second gas collecting pipe 6, allowing the gaseous medium to be discharged from the heat pipe base tube 15 through the gas outlet pipe 18. The outer wall of the liquid container 19 is connected to the heat pipe base tube 15. The distance between the inner walls is set to 3-5mm. When the liquid working medium inside the liquid container 19 is filled, it overflows and distributes the liquid downwards from the gap between the outer wall of the liquid container 19 and the inner wall of the heat pipe base tube 15. This achieves overflow distribution at the top of the heat pipe, so that the liquid working medium forms a liquid film evenly on the inner wall of the heat pipe base tube 15. Similar to the falling film evaporation of an integral heat pipe, this avoids overheating and dry burning of the working medium at the upper part of the heat pipe evaporation end caused by bottom liquid supply, thus ensuring that it can fully exchange heat when used as the evaporation end.

[0023] This patent allows each heat exchange end to be either an evaporator, a condenser, or a combination of multiple heat exchange ends, overcoming the limitation of current heat pipe heat exchangers that can only exchange heat in one direction. It is not limited by the location of the application and can be used to cope with different meteorological conditions and different application scenarios. It can utilize natural cold sources or recover waste heat resources for space cooling or heating, significantly reducing system energy consumption, saving energy and protecting the environment. It has good practicality and can generate good economic and social benefits.

Claims

1. A bidirectional separation heat pipe heat exchanger based on overflow liquid distribution at the evaporator end, characterized in that: It includes a high-level heat exchange end (1) and a low-level heat exchange end (2). The top of the high-level heat exchange end (1) is connected to a first gas collecting pipe (3) and a first liquid distributing pipe (4). The bottom of the high-level heat exchange end (1) is connected to a first liquid collecting pipe (5). The top of the low-level heat exchange end (2) is connected to a second gas collecting pipe (6) and a second liquid distributing pipe (7). The bottom of the low-level heat exchange end (2) is connected to a second liquid collecting pipe (8). The second gas collecting pipe (6) is connected to the first gas collecting pipe (3) through a riser pipe (9). The first liquid collecting pipe (5) is connected to the second liquid distributing pipe (7) through a first liquid pipe (10). The second liquid collecting pipe (8) is connected to the first liquid distributing pipe (4) through a second liquid pipe (11). The first liquid pipe (10) is also equipped with a first ball valve (12). The second liquid pipe (11) is also equipped with a second ball valve (13) and a working fluid pump (14).

2. The bidirectional separation heat pipe heat exchanger based on overflow liquid distribution at the evaporator end according to claim 1, characterized in that: Both the high-level heat exchange end (1) and the low-level heat exchange end (2) include multiple heat pipe base tubes (15). Multiple fins (16) are provided along the axis of each heat pipe base tube (15). The top of the heat pipe base tube (15) of the high-level heat exchange end (1) is connected to the first gas collecting pipe (3) and the first liquid distributing pipe (4), respectively. The bottom of the heat pipe base tube (15) of the high-level heat exchange end (1) is connected to the first liquid collecting pipe (5). The top of the heat pipe base tube (15) of the low-level heat exchange end (2) is connected to the second gas collecting pipe (6) and the second liquid distributing pipe (7), respectively. The bottom of the heat pipe base tube (15) of the low-level heat exchange end (2) is connected to the second liquid collecting pipe (8).

3. The bidirectional separation heat pipe heat exchanger based on overflow liquid distribution at the evaporator end according to claim 2, characterized in that: The top of the heat pipe base tube (15) of both the high heat exchange end (1) and the low heat exchange end (2) is provided with an overflow liquid distribution device. The top of the heat pipe base tube (15) of the high heat exchange end (1) is connected to the first gas collecting pipe (3) and the first liquid distributing pipe (4) respectively through the overflow liquid distribution device. The top of the heat pipe base tube (15) of the low heat exchange end (2) is connected to the second gas collecting pipe (6) and the second liquid distributing pipe (7) respectively through the overflow liquid distribution device.

4. The bidirectional separation heat pipe heat exchanger based on overflow liquid distribution at the evaporator end according to claim 3, characterized in that: The overflow liquid distribution device includes an inlet pipe (17) and an outlet pipe (18) connected to the top of the heat pipe base tube (15). The bottom end of the outlet pipe (18) passes through the part of the heat pipe base tube (15) located inside the heat pipe base tube (15) and surrounds a liquid container (19). The top of the liquid container (19) is open, and the outlet of the inlet pipe (17) connected to the heat pipe base tube (15) corresponds to the top opening of the liquid container (19).

5. The bidirectional separation heat pipe heat exchanger based on overflow liquid distribution at the evaporator end according to claim 4, characterized in that: The liquid inlet pipe (17) of the high heat exchange end (1) is connected to the first liquid distribution pipe (4), the gas outlet pipe (18) of the high heat exchange end (1) is connected to the first gas collection pipe (3), the liquid inlet pipe (17) of the low heat exchange end (2) is connected to the second liquid distribution pipe (7), and the gas outlet pipe (18) of the low heat exchange end (2) is connected to the second gas collection pipe (6).

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