Heat exchanger for air conditioning system
Through the design of the heat pipe, cold pipe and shunt pipe structure, the contact area and airflow optimization of the refrigerant and fins is enhanced, and the problem of excessive weight and volume of the fin heat exchanger is solved, and an efficient and lightweight heat exchanger for air conditioning systems is achieved.
Patent Information
- Application Number
- CN202422593567.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-25
AI Technical Summary
Due to the limitation of fin density, the heat exchanger for existing air-conditioning systems is too large in weight and volume, which is inconvenient for use.
The structure of heat pipe, cold pipe and shunt pipe is adopted. The shunt pipe is equipped with microchannels and heat exchange fins. Combined with the spoiler design, it enhances the contact area and heat transfer efficiency of the refrigerant and fins, and optimizes the airflow direction through the ventilation duct.
It improves heat exchange efficiency, reduces the weight and volume of the heat exchanger, and facilitates use and transportation.
Smart Images
Figure CN223258368U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of air-conditioning technology, and in particular to a heat exchanger for an air-conditioning system. Background Art
[0002] The heat exchanger used in the air-conditioning system is an important component of the air-conditioning system and occupies a large proportion by weight.
[0003] The heat exchangers used in conventional air conditioning systems are mainly finned heat exchangers, which achieve the purpose of strengthening the heat exchange between the refrigerant in the base tube and the outside air by adding fins to the base tube for circulating the refrigerant.
[0004] However, since the fin-type heat exchanger is limited by the contact area between the fins and the external gas, in order to improve the heat exchange efficiency of the heat exchanger for the air-conditioning system, the only way is to increase the fin density, adjust the fin size, etc., which will increase the weight and volume of the heat exchanger for the air-conditioning system. As a result, the weight and volume of the heat exchanger for the air-conditioning system with higher heat exchange efficiency are very large, making it inconvenient to use.
[0005] In view of this, it is necessary to provide a heat exchanger for an air conditioning system. Utility Model Content
[0006] In order to solve the problem that existing heat exchangers for air-conditioning systems with high heat exchange efficiency are heavy and bulky and inconvenient to use, the present application provides a heat exchanger for an air-conditioning system.
[0007] The present application provides a heat exchanger for an air conditioning system, which adopts the following technical solution: comprising a frame and a heat pipe, a cold pipe and a shunt pipe arranged on the frame, wherein the heat pipe is provided with a heat inlet for inputting a refrigerant, and the cold pipe is provided with a cold outlet for outputting a refrigerant;
[0008] One end of the diverter tube is connected to the heat pipe, and the other end of the diverter tube is connected to the cold pipe. A plurality of heat exchange fins are arranged on the tube body of the diverter tube at intervals, and each of the heat exchange fins has a microchannel suitable for the flow of refrigerant, and each of the microchannels is connected to the diverter tube.
[0009] By adopting the above-mentioned technical solution, the design of the microchannels in the heat exchange fins increases the contact area between the refrigerant in the diverter tube and the heat exchange fins, thereby improving the heat transfer efficiency between the refrigerant in the diverter tube and the heat exchange fins, so that the heat exchanger for the air-conditioning system has a very high heat exchange efficiency; on the other hand, the heat exchange fins of the present application are lighter than conventional heat exchange fins on the market at the same volume, so that the weight and volume of the heat exchanger for the air-conditioning system are better than conventional fin-type heat exchangers on the market, and it is convenient to use.
[0010] Specifically, a partition is abutted between two adjacent heat exchange fins.
[0011] By adopting the above technical solution, the provision of the separator can protect each heat exchange fin, so that these heat exchange fins are not easily deformed.
[0012] Specifically, the diverter pipe includes a curved pipe section and two straight pipe sections, the hot pipe and the cold pipe are both arranged on one side of the rack, and the curved pipe section is arranged on the other side of the rack;
[0013] One end of the two straight pipe sections is connected to the curved pipe section, the hot pipe and the cold pipe are connected to one end of the corresponding straight pipe section away from the curved pipe section, and the heat exchange fins are arranged on the straight pipe section.
[0014] By adopting the above technical solution, the refrigerant in the heat pipe can sequentially pass through the straight pipe section, the curved pipe section and the straight pipe section connected to the heat pipe into the cold pipe, and in the process exchange heat with the external environment through the heat exchange fins on the two straight pipe sections.
[0015] Furthermore, the rack is provided with a plurality of diversion pipes, which are arranged in multiple layers in a vertical direction, and a ventilation duct is formed between the straight pipe sections of two adjacent layers of the diversion pipes, and the ventilation duct is inclined downward in the direction from the hot pipe to the cold pipe.
[0016] By adopting the above technical solution, the refrigerant in the heat pipe will gradually cool down in the process of flowing along the diversion pipe to the cold pipe, so that the temperature of the straight pipe section connected to the heat pipe is higher than the temperature of the straight pipe section connected to the cold pipe. The design of the ventilation duct makes the air heated by the heat exchange fins on the straight pipe section connected to the cold pipe come into contact with the heat exchange fins with higher temperature on the other straight pipe section along the ventilation duct, so that an upward airflow with a wind direction from the cold pipe to the hot pipe can be formed in the ventilation duct, thereby further increasing the heat exchange efficiency of the heat exchanger used in the air-conditioning system.
[0017] Furthermore, the heat inlet is opened on the heat pipe near the top thereof, the cold outlet is opened on the cold pipe near the bottom thereof, and the pipe openings on each of the diversion pipes connected to the heat pipe and the cold pipe are located between the heat inlet and the cold outlet.
[0018] By adopting the above technical solution, the refrigerant entering the heat pipe from the heat inlet will be distributed to each branch pipe along the inner wall of the heat pipe, and the refrigerant flowing into the cold pipe from each branch pipe will also be collected at the cold outlet along the inner wall of the cold pipe.
[0019] Furthermore, a spoiler is provided in the cold pipe, and a spoiler channel is formed between the spoiler and the inner wall of the cold pipe. The refrigerant entering the cold pipe from the diverter pipe can pass through the spoiler channel to reach the cold outlet.
[0020] By adopting the above technical solution, since the more refrigerant is received in the diversion pipe that is closer to the heat inlet, the temperature of the refrigerant flowing out of the diversion pipe that is farther away from the cold outlet is higher, and the setting of the spoiler ensures that the refrigerant flowing into the cold pipe from each diversion pipe must pass through the spoiler channel formed between the spoiler and the inner wall of the cold pipe and be collected at the cold outlet, so that the refrigerant flowing into the cold pipe from each diversion pipe can be fully mixed before leaving the cold pipe from the cold outlet, ensuring the overall temperature of the refrigerant is uniform, and avoiding the situation where the cooling efficiency of the air-conditioning system is affected by the excessive temperature of some refrigerants.
[0021] Furthermore, the spoiler is a shaftless spiral.
[0022] By adopting the above technical solution, the shaftless spiral can form a spiral turbulent flow channel between the shaftless spiral and the inner wall of the cold pipe, so that the refrigerant flowing into the cold pipe from each branch pipe can be fully mixed before leaving the cold pipe from the cold outlet.
[0023] Furthermore, the pitch of the spoiler gradually increases in a direction from approaching to moving away from the cold outlet.
[0024] By adopting the above technical solution, since the pitch of the spoiler gradually increases in the direction from close to to away from the cold outlet, the temperature of the refrigerant flowing out of the diversion pipe closer to the cold outlet is lower, so that the refrigerant with a lower temperature near the lower layer of the cold pipe can be fully mixed with the refrigerant with a higher temperature near the upper layer of the cold pipe.
[0025] In summary, this application has the following beneficial technical effects:
[0026] The heat exchanger comprises a frame and a heat pipe, a cold pipe and a shunt pipe arranged on the frame. The heat pipe is provided with a heat inlet for inputting refrigerant, and the cold pipe is provided with a cold outlet for outputting refrigerant. One end of the shunt pipe is connected to the heat pipe, and the other end of the shunt pipe is connected to the cold pipe, and a plurality of heat exchange fins are arranged at intervals on the pipe body of the shunt pipe, and each heat exchange fin is formed with a microchannel suitable for the flow of refrigerant, and each microchannel is connected to the shunt pipe. The design of the microchannels in the heat exchange fins increases the contact area between the refrigerant in the shunt pipe and the heat exchange fins, thereby improving the heat transfer efficiency between the refrigerant in the shunt pipe and the heat exchange fins, so that the heat exchanger used in the air-conditioning system has a very high heat exchange efficiency; on the other hand, the heat exchange fins of the present application are lighter than conventional heat exchange fins on the market under the condition of the same volume, so that the weight and volume of the heat exchanger used in the air-conditioning system are better than the conventional fin-type heat exchangers on the market, and it is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a perspective view of a heat exchanger for an air conditioning system of the present application;
[0028] Figure 2 yes Figure 1 A schematic enlarged view of area A, showing the separator;
[0029] Figure 3 It is along Figure 1 Schematic cross-sectional view of the hot and cold pipes taken along the vertical center axis.
[0030] Figure numerals: 1, rack; 2, heat pipe; 21, heat inlet; 3, cold pipe; 31, cold outlet; 32, spoiler; 4, diverter pipe; 41, curved pipe section; 42, straight pipe section; 421, heat exchange fin; 422, separator. DETAILED DESCRIPTION
[0031] Figure 1 This is a three-dimensional diagram of a heat exchanger for an air conditioning system of the present application. Figure 2 yes Figure 1 Schematic enlargement of area A, showing the separator, Figure 3 It is along Figure 1 Schematic cross-sectional view of the hot and cold pipes taken along the vertical axis. Figure 1 、 Figure 2 and Figure 3 The present application provides a heat exchanger for an air-conditioning system, comprising: a rack 1 and a heat pipe 2, a cold pipe 3 and a plurality of U-shaped shunt pipes 4 arranged on the rack 1. The plurality of shunt pipes 4 are arranged in multiple layers at intervals in the vertical direction. Each shunt pipe 4 includes a curved pipe section 41 and two straight pipe sections 42 extending in the horizontal direction. The heat pipe 2 and the cold pipe 3 are both arranged on one side of the rack 1 in the vertical direction. A heat inlet 21 for inputting a refrigerant is provided near the top end of the heat pipe 2, and a cold outlet 31 for outputting a refrigerant is provided near the bottom end of the cold pipe 3; the curved pipe section 41 is provided with a At the other side of the rack 1, one end of the curved pipe section 41 is connected to the cold pipe 3 through a straight pipe section 42, and the other end of the curved pipe section 41 is connected to the heat pipe 2 through a straight pipe section 42. The pipe openings on each branch pipe 4 that are connected to the heat pipe 2 and the cold pipe 3 are all located between the hot inlet 21 and the cold outlet 31, so that the refrigerant in the heat pipe 2 can sequentially pass through the straight pipe section 42 connected to the heat pipe 2, the curved pipe section 41 and the straight pipe section 42 connected to the cold pipe 3 to enter the cold pipe 3, and in the process, exchange heat with the external environment through the heat exchange fins 421 on the two straight pipe sections 42.
[0032] See also Figure 1 and Figure 2, a plurality of heat exchange fins 421 are arranged at intervals on the straight pipe section 42 of each branch pipe 4, and the heat exchange fins 421 can be formed by stretching using H68 copper tube as raw material; a separator 422 is abutted between two adjacent heat exchange fins 421, and the separator 422 can be a soft part produced by injection molding of polyoxymethylene POM-C material, so that each heat exchange fin 421 can be protected by the separator 422, so that these heat exchange fins 421 are not easily deformed; a microchannel suitable for the flow of refrigerant is formed inside each heat exchange fin 421 Each microchannel is connected to the diverter pipe 4, and the wall thickness of each microchannel can be 0.2mm, so as to reduce the weight of the heat exchange fins 421 and increase the contact area between the refrigerant in the diverter pipe 4 and the heat exchange fins 421 without expanding the volume of the heat exchange fins 421, thereby improving the heat transfer efficiency between the refrigerant in the diverter pipe 4 and the heat exchange fins 421, so that the heat exchanger for the air-conditioning system has a high heat exchange efficiency while the overall weight is reduced by about 30% compared with the fin-type heat exchanger on the market, and the volume is reduced by nearly half, which facilitates the transportation and installation of the heat exchanger for the air-conditioning system.
[0033] See also Figure 1 and Figure 2 A ventilation duct is formed between the straight pipe sections 42 of two adjacent layers of diversion pipes 4, and the ventilation duct is inclined downward in the direction from the hot pipe 2 to the cold pipe 3. Since the refrigerant in the heat pipe 2 will gradually cool down in the process of flowing along the diversion pipe 4 to the cold pipe 3, the temperature of the straight pipe section 42 connected to the heat pipe 2 is higher than the temperature of the straight pipe section 42 connected to the cold pipe 3. The design of the ventilation duct makes it possible for the air heated by the heat exchange fins 421 on the straight pipe section 42 connected to the cold pipe 3 to contact the heat exchange fins 421 with higher temperature on the other straight pipe section 42 along the ventilation duct, so that an upward inclined airflow with a wind direction from the cold pipe 3 to the hot pipe can be formed in the ventilation duct, thereby further increasing the heat exchange efficiency of the heat exchanger used in the air-conditioning system.
[0034] See also Figure 2 and Figure 3 The cooling pipe 3 is provided with a spoiler 32, which is an axisless spiral. A spiral turbulent flow channel is formed between the spoiler 32 and the inner wall of the cooling pipe 3, and the pitch of the spoiler 32 gradually increases in the direction from close to far away from the cooling outlet 31. Since the branch pipe 4 closer to the heat inlet 21 receives more refrigerant, the temperature of the refrigerant flowing out of the branch pipe 4 farther away from the cooling outlet 31 is higher, and the setting of the spoiler 32 ensures that the refrigerant flowing into the cooling pipe 3 from each branch pipe 4 must pass through the turbulent flow channel formed between the spoiler 32 and the inner wall of the cooling pipe 3 and is collected at the cooling outlet 31, so that the refrigerant with lower temperature near the lower layer of the cooling pipe 3 can be fully mixed with the refrigerant with higher temperature near the upper layer of the cooling pipe 3, ensuring the uniformity of the overall temperature of the refrigerant and avoiding the situation where the temperature of some refrigerants is too high and affects the cooling efficiency of the air-conditioning system.
[0035] The working principle of the heat exchanger for an air conditioning system in the present application is as follows:
[0036] The heat exchanger comprises a rack 1 and a heat pipe 2, a cold pipe 3 and a shunt pipe 4 arranged on the rack 1. The heat pipe 2 is provided with a heat inlet 21 for inputting a refrigerant, and the cold pipe 3 is provided with a cold outlet 31 for outputting a refrigerant. One end of the shunt pipe 4 is connected to the heat pipe 2, and the other end of the shunt pipe 4 is connected to the cold pipe 3. A plurality of heat exchange fins 421 are arranged on the body of the shunt pipe 4 at intervals. A microchannel suitable for the flow of refrigerant is formed in each heat exchange fin 421. Each microchannel is connected to the shunt pipe 4. The microchannels in the heat exchange fins 421 are connected to the shunt pipe 4. On the one hand, the design of the channel increases the contact area between the refrigerant in the diverter tube 4 and the heat exchange fins 421, thereby improving the heat transfer efficiency between the refrigerant in the diverter tube 4 and the heat exchange fins 421, so that the heat exchanger for the air-conditioning system has a very high heat exchange efficiency; on the other hand, the heat exchange fins 421 of the present application are lighter than conventional heat exchange fins 421 on the market at the same volume, so that the weight and volume of the heat exchanger for the air-conditioning system are better than the conventional fin-type heat exchangers on the market, and it is convenient to use.
[0037] It should be noted that the above are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A heat exchanger for an air conditioning system, characterized in that: The invention comprises a frame (1) and a heat pipe (2), a cold pipe (3) and a shunt pipe (4) arranged on the frame (1); the heat pipe (2) is provided with a heat inlet (21) for inputting a refrigerant, and the cold pipe (3) is provided with a cold outlet (31) for outputting a refrigerant; One end of the shunt pipe (4) is connected to the heat pipe (2), and the other end of the shunt pipe (4) is connected to the cold pipe (3), and a plurality of heat exchange fins (421) are arranged on the body of the shunt pipe (4) at intervals, and each of the heat exchange fins (421) is formed with a microchannel suitable for the flow of refrigerant, and each of the microchannels is connected to the shunt pipe (4).
2. The heat exchanger for an air conditioning system according to claim 1, characterized in that: A partition (422) is abutted between two adjacent heat exchange fins (421).
3. The heat exchanger for an air conditioning system according to claim 1, characterized in that: The diverter pipe (4) comprises a curved pipe section (41) and two straight pipe sections (42); the heat pipe (2) and the cold pipe (3) are both arranged on one side of the rack (1); and the curved pipe section (41) is arranged on the other side of the rack (1); One end of each of the two straight pipe sections (42) is connected to the curved pipe section (41); the heat pipe (2) and the cold pipe (3) are both connected to one end of the corresponding straight pipe section (42) away from the curved pipe section (41); and the heat exchange fin (421) is provided on the straight pipe section (42).
4. The heat exchanger for an air conditioning system according to claim 3, characterized in that: The frame (1) is provided with a plurality of the diverter pipes (4), which are arranged in multiple layers at intervals in a vertical direction, and a ventilation duct is formed between the straight pipe sections (42) of two adjacent layers of the diverter pipes (4), and the ventilation duct is inclined downward in the direction from the hot pipe (2) to the cold pipe (3).
5. The heat exchanger for an air conditioning system according to claim 4, characterized in that: The heat inlet (21) is opened on the heat pipe (2) at a position close to the top thereof, the cold outlet (31) is opened on the cold pipe (3) at a position close to the bottom thereof, and the pipe openings on each of the diversion pipes (4) that are connected to the heat pipe (2) and the cold pipe (3) are all located between the heat inlet (21) and the cold outlet (31).
6. The heat exchanger for an air conditioning system according to claim 4, characterized in that: A spoiler (32) is provided in the cold pipe (3), and a spoiler channel is formed between the spoiler (32) and the inner wall of the cold pipe (3). The refrigerant entering the cold pipe (3) from the diverter pipe (4) can pass through the spoiler channel and reach the cold outlet (31).
7. The heat exchanger for an air conditioning system according to claim 6, characterized in that: The spoiler (32) is a shaftless spiral.
8. The heat exchanger for an air conditioning system according to claim 7, characterized in that: The pitch of the spoiler (32) gradually increases in a direction from approaching to moving away from the cold outlet (31).