A type of air-cooled heat exchanger unit with good heat exchange effect

Abstract

This application relates to an air-cooled heat exchanger unit with good heat exchange performance, comprising an indoor housing, an indoor fan, an outdoor housing, an outdoor fan, and a heat exchanger. The heat exchanger is disposed between the indoor and outdoor housings, and has several heat dissipation fins at its top. The indoor housing has an indoor inlet and an indoor outlet, with the indoor outlet located above the indoor inlet. The outdoor housing has an outdoor inlet and an outdoor outlet, with the outdoor inlet located above the outdoor outlet. Mounting plates are connected to both the indoor and outdoor housings. The indoor fan is mounted on the mounting plate of the indoor housing, and its outlet connects to the indoor outlet. The outdoor fan is mounted in the outdoor housing, and its outlet connects to the outdoor outlet. The outdoor fan is located below the mounting plate. Assembly components that restrict the movement of the heat exchanger are connected between the indoor housing and the heat exchanger, and between the outdoor housing and the heat exchanger. This application improves the cooling effect of the air-cooled heat exchanger unit.

Description

Technical Field

[0001] This application relates to the field of heat exchanger technology, and in particular to an air-cooled heat exchanger with good heat exchange performance. Background Technology

[0002] A heat exchanger is an auxiliary device in an air conditioning system, primarily used for total heat exchange between indoor and outdoor air. Its working principle is based on the positive crossflow of indoor return air and outdoor fresh air, achieving heat and mass transfer through temperature and water vapor partial pressure differences, thereby recovering energy. In summer, it can lower the temperature of the fresh air and dehumidify it; in winter, it can raise the temperature and humidify it, effectively reducing air conditioning energy consumption.

[0003] Chinese Patent Publication No. CN222393029U discloses an air-cooled heat exchanger unit, which includes a soundproof enclosure, an indoor air inlet duct, an indoor return air duct, an outdoor air inlet duct, an outdoor exhaust duct, and a heat exchanger. An isolation plate is installed inside the soundproof enclosure, dividing the interior into a return air zone and a heat exchange zone. The heat exchanger is located within the heat exchange zone. Both the indoor and outdoor air inlet ducts are connected to the heat exchanger, which is connected to both the return air zone and the heat exchange zone. The outdoor exhaust duct is connected to the heat exchange zone, and the indoor return air duct is connected to the return air zone. The air-cooled heat exchanger unit of this invention enables heat exchange without mixing indoor and outdoor air.

[0004] Regarding the aforementioned technologies, in existing technologies, the indoor air inlet enters the return air zone from top to bottom and passes through a heat exchanger. Outdoor fresh air is transported to the outdoor exhaust duct through a filter and also passes through a heat exchanger. The outdoor fresh air and the indoor air exchange heat with the heat exchanger respectively, achieving the effect of cooling the indoor air. However, the indoor air temperature is relatively high. After the heat exchanger is heated, it encounters the outdoor fresh air and exchanges heat. However, not all the heat is converted, and some heat remains in the heat exchanger. This heat is transferred from bottom to top with the heat exchanger and is then heated by the indoor air. As a result, this heat cannot be dissipated, and the indoor air is always affected by this part of the heat, which prevents further cooling and reduces the cooling effect of the air-cooled heat exchanger unit. Summary of the Invention

[0005] To improve the cooling effect of air-cooled heat exchanger units, this application provides an air-cooled heat exchanger unit with good heat exchange performance.

[0006] This application provides an air-cooled heat exchanger unit with good heat exchange performance using the following technical solution:

[0007] A high-efficiency air-cooled heat exchanger unit includes an indoor housing, an indoor fan, an outdoor housing, an outdoor fan, and a heat exchanger. The heat exchanger is disposed between the indoor housing and the outdoor housing, and has several heat dissipation fins at its top. The indoor housing has an indoor inlet and an indoor outlet, with the indoor outlet located above the indoor inlet. The outdoor housing has an outdoor inlet and an outdoor outlet, with the outdoor inlet located above the outdoor outlet. Mounting plates are connected to both the indoor and outdoor housings. The indoor fan is mounted on the mounting plate of the indoor housing, and its outlet connects to the indoor outlet. The outdoor fan is mounted in the outdoor housing, and its outlet connects to the outdoor outlet. The outdoor fan is located below the mounting plate. Assembly components that restrict the movement of the heat exchanger are connected between the indoor housing and the heat exchanger, and between the outdoor housing and the heat exchanger.

[0008] By adopting the above technical solution, during heat exchange, the indoor and outdoor fans are activated. Indoor air flows through the indoor inlet, heat exchanger, and indoor outlet, while outdoor air flows through the outdoor inlet, heat exchanger, and outdoor outlet. During this process, the indoor air exchanges heat with the heat exchanger from bottom to top. At the same time, the outdoor air exchanges heat with the heat exchanger from top to bottom, cooling the heat exchanger. The remaining heat in the heat exchanger is transferred to the top and dissipated by the heat dissipation fins, achieving a continuous cooling effect for the indoor air. The heat from the indoor air is transferred to the heat exchanger, raising its temperature and distributing the heat throughout the entire heat exchanger. The outdoor air exchanges heat with the heat exchanger, cooling it. The cooling and heating directions are opposite, rapidly cooling the heat exchanger. Simultaneously, the remaining heat is transferred to the top of the heat exchanger and dissipated by the heat dissipation fins, ensuring that the indoor air is not affected by the remaining heat in the heat exchanger as much as possible, allowing as much heat as possible to be carried away from the indoor air. Compared with existing technologies, this improves the cooling effect of the air-cooled heat exchanger unit.

[0009] Optionally, the assembly includes locking bolts and locking nuts. Connecting strips are connected to the top and bottom of the indoor housing. Several locking bolts are inserted between the connecting strips and the heat exchanger. The locking nuts are threaded onto the locking bolts and abut against the side wall of the heat exchanger. Similarly, they are provided on the outdoor housing.

[0010] By adopting the above technical solution, when assembling the heat exchanger, the locking bolts are passed through the connecting strip and the side wall of the heat exchanger, and then the locking nut is rotated to restrict the heat exchanger, thus realizing the assembly of the heat exchanger.

[0011] Optionally, both the indoor and outdoor housings are connected to connecting rails, each with a T-slot. A limiting plate is connected to the bottom of the T-slot. Several connecting strips are connected to the heat exchanger at positions corresponding to the connecting rails. The connecting strips slide within the T-slots, and several ball bearings are embedded on both sides of each connecting strip, with the ball bearings abutting against the sidewalls of the T-slots.

[0012] By adopting the above technical solution, through the sliding cooperation of the connecting rail and connecting strip, and with the ball bearings abutting against the side wall of the T-slot, the heat exchanger can be pushed and pulled with less effort during loading and unloading. At the same time, the horizontal freedom of the indoor and outdoor housings and the heat exchanger is restricted, thereby improving the assembly accuracy of the air-cooled heat exchanger unit.

[0013] Optionally, the assembly includes a rotating plate, a limiting cylinder, a rectangular column, and a pressure spring. A connecting plate is connected to the heat exchanger. The limiting cylinder is connected to the connecting plate and located on one side of the connecting rail. The rectangular column is connected to the connecting rail and a fixed cylinder is connected to the rectangular column. The fixed cylinder is the inscribed circle of the rectangular column. A baffle is connected to one end of the fixed cylinder. A rectangular groove is formed at one end of the rotating plate. The rotating plate is sleeved on the rectangular column. The pressure spring is sleeved on the fixed cylinder and located between the baffle and the rotating plate. A limiting arc groove is formed at the other end of the rotating plate. The center of the limiting arc groove coincides with the axis of the fixed cylinder. When limiting, the rectangular groove slides with the rectangular column, and the limiting cylinder is located within the limiting arc groove.

[0014] By adopting the above technical solution, during assembly, the horizontal degree of freedom of the heat exchanger is restricted by the cooperation of the connecting strip and the T-slot. Then, the rotating plate is pulled to move the rotating plate onto the fixed cylinder, the pressure spring is compressed, the moving plate is rotated, and the limiting arc groove is locked onto the limiting cylinder. Then the rotating plate is pressed to make the rotating plate slide and cooperate with the rectangular column again, thereby blocking the movement of the limiting cylinder and restricting the vertical degree of freedom of the heat exchanger. This realizes the assembly between the heat exchanger, the indoor box and the outdoor box.

[0015] Optionally, dustproof nets can be detachably connected to the outdoor inlet, the outdoor outlet, the indoor inlet, and the indoor outlet.

[0016] By adopting the above technical solution, dust is diffused in the air. By setting up a dust filter, on the one hand, dust is reduced from entering the heat exchanger, thereby reducing the possibility that the heat exchanger will be affected by heat dissipation due to dust. On the other hand, it helps to filter dust in the indoor air to purify the indoor air.

[0017] Optionally, the heat exchanger is composed of an array of micro heat pipes.

[0018] By adopting the above technical solutions, micro heat pipe arrays have core advantages such as ultra-high thermal conductivity, structural reliability, and application flexibility, which can accelerate the heat exchange rate of heat exchangers and improve the heat exchange efficiency of heat exchangers.

[0019] Optionally, a plurality of connecting fins are connected between two adjacent micro heat pipes, and the connecting fins are arranged vertically.

[0020] By adopting the above technical solution, the connecting fins improve the structural strength of the heat exchanger, assist in guiding airflow, and increase the contact area between the heat exchanger and the air, thereby further improving the heat exchange efficiency of the heat exchanger.

[0021] Optionally, the heat exchanger has a mounting groove at its top, the heat dissipation fins are connected to the mounting groove and are flush with the surface of the mounting groove, and a lifting handle is rotatably connected inside the mounting groove.

[0022] By adopting the above technical solution, when the heat exchanger needs cleaning and maintenance, the lifting handle makes it convenient for staff to use lifting tools to lift the heat exchanger, thus facilitating the loading and unloading of the heat exchanger.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During heat exchange, the indoor and outdoor fans are activated. Indoor air flows through the indoor inlet, heat exchanger, and indoor outlet, while outdoor air flows through the outdoor inlet, heat exchanger, and outdoor outlet. During this process, the indoor air transfers heat to the heat exchanger from bottom to top. Simultaneously, the outdoor air exchanges heat with the heat exchanger from top to bottom, cooling the heat exchanger. Residual heat in the heat exchanger is transferred to the top and dissipated by the heat dissipation fins, achieving a continuous cooling effect on the indoor air. Alternatively, the indoor air's heat transfer to the heat exchanger raises its temperature, distributing heat throughout the entire heat exchanger. The outdoor air's heat exchange with the heat exchanger cools it, with the cooling and heating directions opposing each other for rapid cooling. Residual heat is transferred to the top of the heat exchanger and dissipated by the heat dissipation fins, ensuring that the indoor air is not affected by residual heat in the heat exchanger, maximizing heat removal from the indoor air. Compared to existing technologies, this improves the cooling effect of the air-cooled heat exchanger unit.

[0025] 2. During assembly, the horizontal freedom of the heat exchanger is restricted by the cooperation of the connecting strip and the T-slot. Then, the rotating plate is moved to the fixed cylinder, the pressure spring is compressed, the moving plate is rotated, and the limiting arc groove locks the cylinder. Then the rotating plate is pressed down, so that the rotating plate slides and cooperates with the rectangular column again, thereby blocking the movement of the limiting cylinder and restricting the vertical freedom of the heat exchanger. This realizes the assembly between the heat exchanger, the indoor box and the outdoor box. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the air-cooled heat exchanger unit in Embodiment 1 of this application.

[0027] Figure 2 This is a cross-sectional view of Embodiment 1 of this application, used to illustrate the internal structure of the air-cooled heat exchanger unit.

[0028] Figure 3 This is a schematic diagram of the air-cooled heat exchanger unit in Embodiment 2 of this application.

[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0030] Explanation of reference numerals in the attached drawings: 1. Indoor enclosure; 11. Indoor fan; 12. Indoor inlet; 13. Indoor outlet; 2. Outdoor enclosure; 21. Outdoor fan; 22. Outdoor inlet; 23. Outdoor outlet; 3. Heat exchanger; 31. Connecting fins; 32. Heat dissipation fins; 33. Lifting handle; 34. Connecting strip; 35. Ball bearing; 4. Dustproof net; 5. Assembly component; 51. Locking bolt; 52. Locking nut; 53. Rotating plate; 531. Rectangular groove; 532. Restricting arc groove; 54. Restricting cylinder; 55. Rectangular column; 551. Fixed cylinder; 56. Compression spring; 6. Connecting rail; 61. T-slot. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0032] Embodiment 1 of this application discloses an air-cooled heat exchanger unit with good heat exchange performance. (Refer to...) Figure 1 and Figure 2 The air-cooled heat exchanger unit with good heat exchange effect includes an indoor casing 1, an indoor fan 11, an outdoor casing 2, an outdoor fan 21, and a heat exchanger 3. The indoor casing 1 has an opening on one side and an indoor inlet 12 and an indoor outlet 13 on the other side, with the indoor outlet 13 located above the indoor inlet 12. The outdoor casing 2 has an opening on one side and an outdoor inlet 22 and an outdoor outlet 23 on the other side, with the outdoor inlet 22 located above the outdoor outlet 23. Mounting plates are fixedly connected to the inner walls of both the indoor casing 1 and the outdoor casing 2. The outdoor fan 21 is installed inside the outdoor casing 2, located below the mounting plate, and its outlet connects to the outdoor outlet 23. The indoor fan 11 is installed on the mounting plate of the indoor casing 1, and its outlet connects to the indoor outlet 13.

[0033] Reference Figure 2 To ensure the heat exchange rate of heat exchanger 3, dustproof nets 4 are bolted to outdoor inlet 22, outdoor outlet 23, indoor inlet 12 and indoor outlet 13. The dustproof nets 4 are used to intercept dust in the air.

[0034] Reference Figure 1 and Figure 2 The heat exchanger 3 is composed of an array of micro heat pipes, with several connecting fins 31 welded between adjacent micro heat pipes. The connecting fins 31 are vertically arranged. The connecting fins 31 improve both the structural strength and the heat exchange rate of the heat exchanger 3. A mounting groove is formed at the top of the heat exchanger 3, and several heat dissipation fins 32 are welded into the mounting groove. The surface of the heat dissipation fins 32 is flush with the top wall of the heat exchanger 3. A lifting handle 33 is hinged in the mounting groove for easy lifting and transport of the heat exchanger 3.

[0035] Reference Figure 2 An assembly assembly 5 is provided between the indoor casing 1 and the heat exchanger 3. The assembly assembly 5 includes locking bolts 51 and locking nuts 52. Connecting strips 34 are fixedly connected to the top and bottom walls of the indoor casing 1. Several locking bolts 51 are inserted between the connecting strips 34 and the side wall of the heat exchanger 3. The locking nuts 52 are threaded onto the locking bolts 51 and abut against the side wall of the heat exchanger 3. Similarly, an assembly is provided between the outdoor casing 2 and the heat exchanger 3.

[0036] During assembly, the locking bolt 51 is passed through the connecting strip 34 of the indoor casing 1 and the side wall of the heat exchanger 3, and then the locking nut 52 is rotated to press against the heat exchanger 3, thereby realizing the assembly between the indoor casing 1 and the heat exchanger 3. Similarly, the assembly between the outdoor casing 2 and the heat exchanger 3 is also performed.

[0037] The implementation principle of an air-cooled heat exchanger unit with good heat exchange effect in this application embodiment is as follows: During heat exchange, the indoor fan 11 and the outdoor fan 21 are started, so that the indoor air passes through the indoor inlet 12, the heat exchanger 3 and the indoor outlet 13, and the outdoor air passes through the outdoor inlet 22, the heat exchanger 3 and the outdoor outlet 23. During this process, the heat exchanger 3 is heated by the indoor air, and the heat is transferred from bottom to top. At the same time, the heat exchanger 3 is cooled by the outdoor air, so that the heat of the heat exchanger 3 is exchanged with the outdoor air. Meanwhile, the remaining heat is transferred to the top of the heat exchanger 3, where the heat dissipation fins 32 dissipate heat to continuously reduce the temperature of the indoor air, thus realizing the working process of the air-cooled heat exchanger unit.

[0038] The heat from the indoor air is transferred to the heat exchanger 3, causing the heat exchanger 3 to heat up and the heat is distributed throughout the heat exchanger 3. The outdoor air exchanges heat with the heat exchanger 3, causing the heat exchanger 3 to cool down. The cooling direction and the heating direction are opposite to each other to quickly cool down the heat exchanger 3. At the same time, the remaining heat is transferred to the top of the heat exchanger 3 and dissipated by the heat dissipation fins 32. This ensures that the indoor air is not affected by the remaining heat of the heat exchanger 3 as much as possible, so that as much heat as possible is carried away from the indoor air. Compared with the existing technology, the cooling effect of the air-cooled heat exchanger unit is improved.

[0039] Example 2: The difference between this example and Example 1 is that the structure of the assembly component 5 is different.

[0040] Reference Figure 3 and Figure 4 Both the indoor casing 1 and the outdoor casing 2 are fixedly connected to the openings of the connecting rails 6. T-slots 61 are formed along the length of the connecting rails 6, and a limiting plate is fixedly connected to the bottom of the T-slots 61. Several connecting strips 34 are fixedly connected to the heat exchanger 3 at positions corresponding to the T-slots 61. Several ball bearings 35 are embedded on the side walls of the connecting strips 34. The connecting strips 34 slide within the T-slots 61, and the ball bearings 35 abut against the side walls of the T-slots 61.

[0041] Reference Figure 3 and Figure 4 The assembly component 5 includes a rotating plate 53, a limiting cylinder 54, a rectangular column 55, and a pressure spring 56. The rectangular column 55 is fixedly connected to the side wall of the connecting rail 6, and a fixing cylinder 551, which is the inscribed circle of the rectangular column 55, is fixedly connected to the rectangular column 55. A baffle is fixedly connected to the end of the fixing cylinder 551. One end of the rotating plate 53 has a rectangular groove 531, through which the rotating plate 53 is fitted onto the fixing cylinder 551. The pressure spring 56 is fitted onto the fixing cylinder 551 and is located between the baffle and the rotating plate 53. The other end of the rotating plate 53 has a limiting arc groove 532, the center of which coincides with the axis of the fixing cylinder 551. A connecting plate is welded onto the heat exchanger 3, and the limiting cylinder 54 is fixedly connected to the connecting plate and located on the rotation path of the limiting arc groove 532.

[0042] During assembly, the lifting handle 33 is lifted using a lifting device, allowing the connecting strip 34 to slide within the T-slot 61. The rotating plate 53 is pulled and rotated, moving it onto the fixed cylinder 551. The pressure spring 56 is compressed, causing the limiting cylinder 54 to enter the limiting arc groove 532. Finally, the plate is pressed and rotated, allowing the rectangular groove 531 to slide into the rectangular cylinder 55. The connection between the connecting strip 34 and the connecting rail 6 restricts the horizontal freedom of the heat exchanger 3, while the connection between the rotating plate 53 and the limiting cylinder 54 restricts the vertical freedom of the heat exchanger 3. This completes the assembly of the heat exchanger 3, the indoor casing 1, and the outdoor casing 2.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wind-cooled heat exchanger unit with good heat exchange effect, characterized in that: The system includes an indoor enclosure (1), an indoor fan (11), an outdoor enclosure (2), an outdoor fan (21), and a heat exchanger (3). The heat exchanger (3) is located between the indoor enclosure (1) and the outdoor enclosure (2). The top of the heat exchanger (3) is provided with several heat dissipation fins (32). The indoor enclosure (1) has an indoor inlet (12) and an indoor outlet (13), with the indoor outlet (13) located above the indoor inlet (12). The outdoor enclosure (2) has an outdoor inlet (22) and an outdoor outlet (23), with the outdoor inlet (22) located above the outdoor outlet (23). Above the 3), both the indoor housing (1) and the outdoor housing (2) are connected to mounting plates. The indoor fan (11) is installed on the mounting plate of the indoor housing (1) and its air outlet is connected to the indoor outlet (13). The outdoor fan (21) is installed in the outdoor housing (2) and its air outlet is connected to the outdoor outlet (23). The outdoor fan (21) is located below the mounting plate. The indoor housing (1) and the heat exchanger (3) are connected to each other as well as the outdoor housing (2) and the heat exchanger (3) with assembly components (5) that restrict the movement of the heat exchanger (3).

2. The air-cooled heat exchanger unit of claim 1, wherein: The assembly component (5) includes locking bolts (51) and locking nuts (52). The top and bottom of the indoor housing (1) are connected to connecting strips (34). Several locking bolts (51) are inserted between the connecting strips (34) and the heat exchanger (3). The locking nuts (52) are threaded onto the locking bolts (51) and abut against the side wall of the heat exchanger (3). Similarly, they are installed on the outdoor housing (2).

3. The air-cooled heat exchanger unit of claim 1, wherein: Both the indoor enclosure (1) and the outdoor enclosure (2) are connected to a connecting rail (6). A T-slot (61) is opened in the connecting rail (6). A limiting plate is connected to the bottom of the T-slot (61). Several connecting strips (34) are connected to the heat exchanger (3) at the position corresponding to the connecting rail (6). The connecting strips (34) slide in the T-slot (61). Several balls (35) are embedded on both sides of the connecting strips (34). The balls (35) abut against the side wall of the T-slot (61).

4. The air-cooled heat exchanger unit with good heat exchange effect according to claim 3, characterized in that: The assembly component (5) includes a rotating plate (53), a limiting cylinder (54), a rectangular column (55), and a pressure spring (56). A connecting plate is connected to the heat exchanger (3). The limiting cylinder (54) is connected to the connecting plate and is located on one side of the connecting rail (6). The rectangular column (55) is connected to the connecting rail (6). A fixing cylinder (551) is connected to the rectangular column (55). The fixing cylinder (551) is the inscribed circle of the rectangular column (55). A baffle is connected to one end of the fixing cylinder (551). The rotating plate (53) A rectangular groove (531) is opened at one end of the rotating plate (53), the rotating plate (53) is sleeved on the rectangular column (55), the pressure spring (56) is sleeved on the fixed cylinder (551) and located between the baffle and the rotating plate (53), and a limiting arc groove (532) is opened at the other end of the rotating plate (53). The center of the limiting arc groove (532) coincides with the axis of the fixed cylinder (551). When limiting, the rectangular groove (531) slides with the rectangular column (55), and the limiting cylinder (54) is located in the limiting arc groove (532).

5. The air-cooled heat exchanger unit of claim 1, wherein: Dustproof nets (4) can be detachably connected to the outdoor inlet (22), the outdoor outlet (23), the indoor inlet (12), and the indoor outlet (13).

6. The air-cooled heat exchanger unit of claim 1, wherein: The heat exchanger (3) is composed of an array of micro heat pipes.

7. The air-cooled heat exchanger unit of claim 6, wherein: Several connecting fins (31) are connected between two adjacent micro heat pipes, and the connecting fins (31) are arranged vertically.

8. The air-cooled heat exchanger unit of claim 1, wherein: The heat exchanger (3) has an installation groove at its top, and the heat dissipation fins (32) are connected to the installation groove and are flush with the surface of the installation groove. A hoisting handle (33) is rotatably connected in the installation groove.

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