Fin surface air cooler assembly and all-air system

Abstract

The utility model relates to a fin surface air cooler assembly and an all-air system. The fin surface air cooler assembly comprises two groups of surface air cooler units, one ends of the two groups of surface air cooler units are intersected, and the other ends of the two groups of surface air cooler units are separated from each other and are fixedly connected to the side wall of a cabinet body; an air inlet area is defined by one sides of the two groups of surface air cooler units, and a first air outlet area and a second air outlet area are defined by the other sides of the two groups of surface air cooler units and the side wall of the cabinet body; the bidirectional centrifugal fan is arranged on the air outlet side of the intersecting end of the two groups of surface air cooler units; the bidirectional centrifugal fan is provided with a first air inlet and a second air inlet, the first air inlet faces the first air outlet area, and the second air inlet faces the second air outlet area; the two sets of air guide structures are arranged in the first air outlet area and the second air outlet area correspondingly and fixedly connected to the areas, close to the two-way centrifugal fan, of the two sets of surface air cooler units. According to the fin surface air cooler assembly, the air field distribution of the whole air outlet faces of the surface air cooler units can be uniform as much as possible, and therefore the heat exchange efficiency of the two surface air cooler units is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a finned surface cooler component and a full air system. Background Art

[0002] In view of the space limitation problem in the design of traditional fresh air air conditioners and all-air system indoor units, the "V"-shaped fin cooler structure can effectively reduce the overall size of the equipment and achieve a compact design to meet the challenge of small space and large demand. However, the uneven wind field has become a key factor restricting the further improvement of heat exchange performance. Specifically, the fin cooler area close to the fan exhibits excellent heat exchange performance due to the high wind speed. In contrast, the fin cooler area far away from the fan has a significantly reduced heat exchange efficiency due to the slow wind speed. This not only limits the full utilization of the overall performance of the fin cooler, but also invisibly increases the material and manufacturing costs, aggravates the complexity of assembly, and ultimately has an adverse impact on the economic benefits of the product. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a finned surface cooler assembly, by arranging two groups of surface cooler units and a bidirectional centrifugal fan with air inlet at both ends in a cabinet, and arranging an air guide structure in the area of ​​the two groups of surface cooler units close to the bidirectional centrifugal fan, and designing the air guide structure according to the wind speed distribution in the air outlet area of ​​the two groups of surface cooler units, effectively balancing the wind speed difference in different areas of the surface cooler units, making the wind field distribution of the entire air outlet surface of the surface cooler unit uniform, thereby improving the heat exchange efficiency of the two groups of surface cooler units, improving the heat exchange performance of the system, and reducing manufacturing costs.

[0004] Another object of the utility model is to provide a full air system, which effectively balances the wind speed difference in different areas of the surface cooler units by arranging two groups of surface cooler units and a bidirectional centrifugal fan with air inlet at both ends in the cabinet, and arranging an air guide structure in the area of ​​the two groups of surface cooler units close to the bidirectional centrifugal fan, and designing the air guide structure according to the wind speed distribution in the air outlet area of ​​the two groups of surface cooler units, so as to make the wind field distribution of the entire air outlet surface of the surface cooler unit uniform, thereby improving the heat exchange efficiency of the two groups of surface cooler units, improving the heat exchange performance of the system, reducing the manufacturing cost, and facilitating the miniaturization of the system.

[0005] A finned surface cooler assembly is arranged in a cabinet, comprising:

[0006] Two groups of surface cooler units, one end of the two groups of surface cooler units are intersected, and the other ends are separated from each other and fixed to the side wall of the cabinet; one side of the two groups of surface cooler units is surrounded to form an air inlet area, and the other side and the side wall of the cabinet are surrounded to form a first air outlet area and a second air outlet area;

[0007] The two-way centrifugal fan is arranged on the air outlet side at the intersection end of the two groups of surface cooler units; the two-way centrifugal fan is provided with a first air inlet and a second air inlet, the first air inlet faces the first air outlet area, and the second air inlet faces the second air outlet area;

[0008] Two groups of air guiding structures are respectively arranged in the first air outlet area and the second air outlet area, and are fixedly connected to the areas of the two groups of surface cooler units close to the two-way centrifugal fan.

[0009] Further, the air guiding structure is provided with one or more air guiding plates, and the air guiding plates are opposite to and spaced from the air outlet surface of the surface cooler unit;

[0010] A plurality of through holes are formed in the air guiding plate.

[0011] Further, the plurality of through holes are distributed in a straight-line arrangement, and the arrangement direction of each row of through holes is parallel to the long side of the surface cooler unit.

[0012] Further, the air guiding plate includes a first air guiding plate, a second air guiding plate and a third air guiding plate connected in sequence; the first air guiding plate is close to the two-way centrifugal fan;

[0013] The through holes include a first through hole, a second through hole and a third through hole. The first through hole is arranged on the first air guiding plate, the second through hole is arranged on the second air guiding plate, and the third through hole is arranged on the third air guiding plate; the opening sizes of the first through hole, the second through hole and the third through hole increase in sequence.

[0014] Further, the first through hole, the second through hole and the third through hole are circular;

[0015] Define the diameter of the first through hole as d1, the diameter of the second through hole as d2, and the diameter of the third through hole as d3. The value range of d1 is 4-6 mm, the value range of d2 is 6-8 mm, and the value range of d3 is 8-10 mm.

[0016] Further, the air outlet surfaces of the air guiding plates are in the same plane and parallel to the air outlet surface of the surface cooler unit; the distance range between the air guiding plates and the air outlet surface of the surface cooler unit is 30-50 mm;

[0017] The air guiding plate includes at least two rows of through holes. The centers of two adjacent through holes in the same row have an equal first spacing. The through holes in the second row are arranged staggeredly with respect to the through holes in the first row. The horizontal spacing formed by the through holes in the first row and the through holes in the second row is the second spacing. The first spacing is greater than the second spacing, forming a triangular arrangement;

[0018] Define the first spacing as l1, and the value range of l1 is 20 to 40 mm;

[0019] Define the distance between the connecting line of the center points of the through holes in the first row and the connecting line of the center points of the through holes in the second row as the row spacing l2, and the value range of l2 is 10 to 20 mm.

[0020] Furthermore, the air guiding structure is provided with a plurality of air guiding plates, which are opposite to the air outlet surface of the surface cooler unit and arranged at a distance;

[0021] The plurality of air guiding plates are strip-shaped; along the direction of extending from one end of the surface cooler unit close to the two-way centrifugal fan to the other end, the plurality of air guiding plates are arranged at intervals.

[0022] Furthermore, the air guiding structure is also provided with a first side plate and a second side plate;

[0023] One end of the first side plate is connected to the end of the air guiding plate close to the two-way centrifugal fan, and the other end is connected to the surface cooler unit; the first side plate is provided with a fourth through hole.

[0024] The second side plate is connected with a flanging at the end far from the air guiding plate; one end of the second side plate is connected to the side of the air guiding plate, and the other end is connected to the side of the surface cooler unit through the flanging.

[0025] Furthermore, an opening is provided on one side of the air guiding structure, and the opening faces the end of the surface cooler unit far from the two-way centrifugal fan.

[0026] At the same time, the present application also provides an all-air system, including the finned surface cooler assembly of the present invention.

[0027] The beneficial effects of the present invention are as follows:

[0028] (1) By arranging two surface cooler units and a two-way centrifugal fan with air inlet at both ends in the cabinet, and arranging an air guiding structure in the area of the two surface cooler units close to the two-way centrifugal fan, and designing the air guiding structure according to the wind speed distribution in the air outlet areas of the two surface cooler units, the wind speed difference in different areas of the surface cooler unit is effectively balanced, the wind field distribution on the entire air outlet surface of the surface cooler unit is made uniform, thereby improving the heat exchange efficiency of the two surface cooler units, improving the heat exchange performance of the system, and reducing the manufacturing cost;

[0029] (2) By arranging the air guiding plates, part of the air flow in the high wind speed area close to the two-way centrifugal fan can be guided to the low wind speed area far from the two-way centrifugal fan to make the wind field distribution uniform; a plurality of through holes are provided on the air guiding plates, and the air flow after heat exchange of the surface cooler unit located in the high wind speed area can flow through the holes to the two-way centrifugal fan and then be discharged out of the system to achieve heat exchange;

[0030] (3) According to the distribution of the wind field in the air outlet area of the finned tube heat exchanger unit, the through holes are divided into three groups, and the sizes of the through holes in each group are designed to obtain a more uniform wind field distribution and further improve the heat exchange performance;

[0031] Meanwhile, the distance between the air deflector and the air outlet surface of the finned tube heat exchanger unit, the arrangement mode, the distance between adjacent through holes, the row pitch, etc. are designed so that the wind field can be better utilized, thereby improving the heat exchange performance;

[0032] (4) By arranging multiple long strip-shaped air deflectors at intervals and designing the interval sizes of the multiple air deflectors, the wind resistance in the high wind speed area can be increased, part of the air flow in the high wind speed area can be guided to the low wind speed area, thereby reducing the wind speed in the high wind speed area and increasing the wind speed in the low wind speed area to uniform the wind field distribution; and it can ensure that the air flow after heat exchange of the finned tube heat exchanger unit located in the high wind speed area flows through the through holes to the double-sided centrifugal fan and then is discharged to the outside of the system to achieve heat exchange;

[0033] (5) By arranging a first side plate at one end of the air deflector close to the double-sided centrifugal fan, the wind resistance at this place can be increased to reduce the wind speed in the high wind speed area, increase the wind speed in the low wind speed area, and improve the wind field uniformity. At the same time, a fourth through hole is opened on the first side plate to ensure the heat exchange performance of the finned tube heat exchanger unit at this place;

[0034] A second side plate is arranged on the side of the air deflector for supporting and connecting the air deflector; meanwhile, a flanging is arranged on the second side plate, and the second side plate is connected to the side of the finned tube heat exchanger unit through the flanging to avoid damaging the finned tube heat exchanger unit during connection;

[0035] (6) An opening is arranged on the side of the air guiding structure away from the double-sided centrifugal fan, which can reduce the wind resistance here, is more conducive to the air flow to the low wind speed area, thereby further improving the uniformity of the entire wind field and saving costs.

[0036] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0037] Figure 1 It is the front view of the finned tube heat exchanger assembly structure provided by the embodiment of the present application;

[0038] Figure 2 It is the structural schematic diagram of the air guiding structure installed on the finned tube heat exchanger unit from the first visual angle provided by the embodiment of the present application;

[0039] Figure 3 It is the front view of the air guiding structure provided by the embodiment of the present application;

[0040] Figure 4 It is the front view of the air guiding structure provided by another embodiment of the present application;

[0041] Figure 5 The structural schematic diagram shows the installation of the diversion structure provided by the embodiment of the present application on the second vision of the surface cooler unit.

[0042] In the figure: 10 - surface cooler unit; 10a - air inlet area; 10b - first air outlet area; 10c - second air outlet area; 11 - first surface cooler unit; 12 - second surface cooler unit; 20 - double - inlet centrifugal fan; 20a - first air inlet; 20b - second air inlet; 30 - air guiding structure; 31 - air guiding plate; 30a - opening; 31a - through - hole; 311 - first air guiding plate; 311a - first through - hole; 312 - second air guiding plate; 312a - second through - hole; 313 - third air guiding plate; 313a - third through - hole; 32 - first side plate; 32a - fourth through - hole; 33 - second side plate; 331 - flanging. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0044] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical direction", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0046] At present, due to the space limitation of fresh air air conditioners and all-air system indoor systems, a "V"-shaped fin cooler structure is adopted. Although this method can effectively reduce the overall size of the equipment, the uneven wind field has become a key factor restricting the further improvement of heat exchange performance. Specifically, the fin cooler area close to the fan exhibits excellent heat exchange performance due to the high wind speed. In contrast, the fin cooler area far away from the fan has a significantly reduced heat exchange efficiency due to the slow wind speed, making it difficult to give full play to the overall performance of the fin cooler. In addition, in order to improve the heat exchange efficiency, the refrigerant pipes inside the fin cooler need to be specially designed and installed, which invisibly increases the material and manufacturing costs, aggravates the complexity of assembly, and ultimately has an adverse effect on the economic benefits of the product.

[0047] Based on this, the utility model provides a finned surface cooler assembly, which comprises two groups of surface cooler units and a bidirectional centrifugal fan with air inlet at both ends arranged in a cabinet, and an air guide structure arranged in the area of ​​the two groups of surface cooler units close to the bidirectional centrifugal fan, and the air guide structure is designed according to the wind speed distribution in the air outlet area of ​​the two groups of surface cooler units, thereby effectively balancing the wind speed difference in different areas of the surface cooler units, making the wind field distribution of the entire air outlet surface of the surface cooler units uniform, thereby improving the heat exchange efficiency of the two groups of surface cooler units, improving the heat exchange performance of the system, and reducing the manufacturing cost.

[0048] Please also see Figure 1 and Figure 2 The finned surface cooler assembly provided in the embodiment of the present application is arranged inside a cabinet, and includes two sets of surface cooler units 10, a bidirectional centrifugal fan 20 and two sets of air guide structures 30. External fresh air enters from the air inlet side of the two sets of surface cooler units 10, and is discharged to the external environment by the bidirectional centrifugal fan 20 after heat exchange through the refrigerant pipes inside the two sets of surface cooler units 10. The two sets of air guide structures 30 are respectively fixed on the air outlet side of the two sets of surface cooler units 10, and are used to evenly distribute the wind field of the bidirectional centrifugal fan 20 on the air outlet side of the two sets of surface cooler units 10.

[0049] Specifically, the two groups of surface cooler units 10 are arranged to intersect at one end, and are separated from each other and fixed to the side wall of the cabinet at the other end. Refrigerant pipes are arranged in the two groups of surface cooler units 10 for heat exchange with the fresh air entering the cabinet. One side of the two groups of surface cooler units 10 is surrounded by an air inlet area 10a, and the other side and the side wall of the cabinet are surrounded by a first air outlet area 10b and a second air outlet area 10c. After the airflow enters the air inlet area 10a, it enters the interior of the two groups of surface cooler units 10 from the windward surface of the two groups of surface cooler units 10 for heat exchange. The airflow after heat exchange flows out from the air outlet surface of the two groups of surface cooler units 10 and enters the first air outlet area 10b and the second air outlet area 10c.

[0050] It is understandable that the sizes of the two groups of finned tube heat exchanger units 10 can be the same or different. The two groups of finned tube heat exchanger units 10 can form an inverted "V" shape or a "V" shape structure. When the air inlet end of the cabinet body is at the bottom and the air outlet end is at the top, the two-way centrifugal fan 20 is correspondingly arranged at the top end inside the cabinet body. At this time, the two groups of finned tube heat exchanger units 10 form an inverted "V" shape structure. When the air inlet end of the cabinet body is at the top and the air outlet end is at the bottom, the two-way centrifugal fan 20 is correspondingly arranged at the bottom end inside the cabinet body. At this time, the two groups of finned tube heat exchanger units 10 form a "V" shape structure. In addition, the two groups of finned tube heat exchanger units 10 can be symmetrically arranged or asymmetrically arranged. No restrictions are imposed here.

[0051] In this embodiment, the two-way centrifugal fan 20 is arranged at the top end inside the cabinet body. The two groups of finned tube heat exchanger units 10 are respectively a first finned tube heat exchanger unit 11 and a second finned tube heat exchanger unit 12. One ends of the first finned tube heat exchanger unit 11 and the second finned tube heat exchanger unit 12 intersect, and the other ends are respectively fixedly connected to two opposite side walls of the cabinet body, forming an inverted "V" shape structure. The air outlet side of the first finned tube heat exchanger unit 11 and one side wall of the cabinet body form a first air outlet area 10b, and the air outlet side of the second finned tube heat exchanger unit 12 and the other side wall of the cabinet body form a second air outlet area 10c. Taking the symmetric center plane of the two opposite side walls as the reference plane, preferably, the sizes of the first finned tube heat exchanger unit 11 and the second finned tube heat exchanger unit 12 are the same and symmetric with respect to the reference plane. Thus, the first air outlet area 10b and the second air outlet area 10c are also symmetric with respect to the reference plane and have the same size, which is more conducive to the two-way centrifugal fan 20 for two-way uniform air exhaust.

[0052] The two-way centrifugal fan 20 is arranged on the air outlet side at the intersection end of the two groups of finned tube heat exchanger units 10. The two-way centrifugal fan 20 is a double-inlet centrifugal fan, which is provided with a first air inlet 20a and a second air inlet 20b. The first air inlet 20a faces the first air outlet area 10b, and the second air inlet 20b faces the second air outlet area 10c, so that the air flow entering the first air outlet area 10b after heat exchange through the first finned tube heat exchanger unit 11 is discharged from the first air inlet 20a, and the air flow entering the second air outlet area 10c after heat exchange through the second finned tube heat exchanger unit 12 is discharged from the second air inlet 20b.

[0053] Two groups of air guiding structures 30 are respectively arranged in the first air outlet area 10b and the second air outlet area 10c, and are fixedly connected to the areas of the two groups of finned tube heat exchanger units 10 close to the two-way centrifugal fan 20.

[0054] Specifically, starting from one end of the first finned tube heat exchanger unit 11 close to the two-way centrifugal fan 20 and extending to the other end of the first finned tube heat exchanger unit 11 away from the two-way centrifugal fan 20, the wind speed is tested at different positions on the air outlet surface of the first finned tube heat exchanger unit 11. The test results show that: in the direction from one end of the first finned tube heat exchanger unit 11 close to the two-way centrifugal fan 20 to its opposite end, the wind speed gradually decreases. That is, the wind speed is relatively high near the two-way centrifugal fan 20, which is defined as the high wind speed area, and the wind speed is relatively low away from the two-way centrifugal fan 20, which is defined as the low wind speed area. Similarly, the air outlet surface of the second finned tube heat exchanger unit 12 also has the same wind speed distribution. Under this wind speed distribution, the heat transfer efficiency of the high wind speed areas of the two groups of finned tube heat exchanger units 10 is high, while the heat transfer efficiency of the low wind speed areas is low, thus affecting the overall heat transfer efficiency of the two groups of finned tube heat exchanger units 10. Therefore, it is necessary to make the wind fields of the two groups of finned tube heat exchanger units 10 uniform to improve the heat transfer efficiency of the areas away from the two-way centrifugal fan 20. In order to make the wind speeds of the first finned tube heat exchanger unit 11 and the second finned tube heat exchanger unit 12 uniform, the air guiding structure 30 is designed. The following will take the air guiding structure 30 provided in the first finned tube heat exchanger unit 11 as an example for detailed description.

[0055] The air guiding structure 30 is provided with one or more air guiding plates 31. The air guiding plates 31 are disposed opposite to the air outlet surface of the first finned tube heat exchanger unit 11, and are used to increase the wind resistance of the high wind speed area, guide part of the air flow to the low wind speed area, so as to increase the wind speed of the low wind speed area and improve the heat transfer efficiency of the low wind speed area. A plurality of through holes 31a are formed in the air guiding plates 31, so that part of the air flow is used for heat exchange in the high wind speed area of the first finned tube heat exchanger unit 11. At the same time, in order to better guide the air flow in the high wind speed area to the low wind speed area, the air guiding plates 31 are spaced apart from the air outlet surface of the first finned tube heat exchanger unit 11.

[0056] Furthermore, due to the non-uniformity of the wind field distribution in the direction from one end of the first finned tube heat exchanger unit 11 close to the two-way centrifugal fan 20 to the other end, when multiple rows of through holes 31a are arranged along this direction, the wind speeds of different rows are different. If the same through hole 31a size and arrangement are adopted for different rows, it is not conducive to further improving the uniform wind field distribution. Therefore, it is necessary to adjust the wind resistance of different areas according to the actual wind field distribution to effectively balance the wind speed difference between the high wind speed area and the low wind speed area of the first finned tube heat exchanger unit 11.

[0057] Please refer to Figure 3, the air deflector 31 includes a first air deflector 311, a second air deflector 312, and a third air deflector 313 that are sequentially connected. The first air deflector 311 is close to the two-way centrifugal fan 20. The first air deflector 311, the second air deflector 312, and the third air deflector 313 can be integrally formed by one plate or connected by three separate plates. Preferably, the first air deflector 311, the second air deflector 312, and the third air deflector 313 are integrally connected. It can be understood that after the first air deflector 311, the second air deflector 312, and the third air deflector 313 are connected, the planes where the air outlet surfaces of the three are located can be in the same plane or different planes. Preferably, the air outlet surfaces of the first air deflector 311, the second air deflector 312, and the third air deflector 313 are all in the same plane. Thus, the air flow will not be lost due to bending, which is more conducive to guiding the air flow to the low wind speed area.

[0058] Correspondingly, the through holes 31a include a first through hole 311a, a second through hole 312a, and a third through hole 313a. The first through hole 311a is provided on the first air deflector 311, the second through hole 312a is provided on the second air deflector 312, and the second through hole 313a is provided on the third air deflector 313. The opening sizes of the first through hole 311a, the second through hole 312a, and the third through hole 313a increase in sequence. The shapes of the first through hole 311a, the second through hole 312a, and the third through hole 313a can be other shapes such as circular, square, and triangular. In this embodiment, the first through hole 311a, the second through hole 312a, and the third through hole 313a are all circular. It should be noted that the sizes of the first through hole 311a, the second through hole 312a, and the third through hole 313a should be appropriate, neither too large nor too small. When too large, the wind resistance formed by the entire air deflector 31 is small, which is not conducive to guiding the air flow in the high wind speed area to the low wind speed area. When too small, it is not conducive to the heat exchange in the high wind speed area of the first surface cooler unit 11. Here, the diameter of the first through hole 311a is defined as d1, the diameter of the second through hole 312a is defined as d2, and the diameter of the third through hole 313a is defined as d3. The value range of d1 is 4 - 6 mm, preferably 4 mm. The value range of d2 is 6 - 8 mm, preferably 6 mm. The value range of d3 is 8 - 10 mm, preferably 8 mm.

[0059] Preferably, the air deflector 31 is parallel to the air outlet surface of the first surface cooler unit 11. It should be noted that the interval between the air deflector 31 and the air outlet surface of the first surface cooler unit 11 should be appropriate. When too large, the wind will be blocked in the area of the first air outlet area 10b close to the two-way centrifugal fan 20. When too small, the air guiding effect of the air deflector 31 will be greatly reduced. Therefore, the distance L between the air deflector 31 and the air outlet surface of the first surface cooler unit 11 is preferably 30 - 50 mm. More preferably, the distance range between the air deflector 31 and the air outlet surface of the first surface cooler unit 11 is 40 mm.

[0060] Meanwhile, the air deflector 31 includes at least two rows of through holes 31a. The centers of two adjacent through holes 31a in the same row have an equal first spacing. The through holes 31a in the second row are staggeredly arranged relative to the through holes 31a in the first row. The horizontal spacing formed by the through holes 31a in the first row and the through holes 31a in the second row is the second spacing. The first spacing is greater than the second spacing, forming a triangular arrangement, preferably an isosceles or equilateral triangular arrangement, so that the through holes 31a are more evenly distributed on the air deflector 31, thereby obtaining a more uniform air field. The first spacing in the same row should be appropriate. When it is too close, the opening area of the entire air deflector 31 will be too large, which is not conducive to increasing the air resistance in the high wind speed area and guiding the air to the low wind speed area. When it is too small, it is not conducive to the heat exchange in the high wind speed area of the first surface cooler unit 11. Therefore, the first spacing needs to be designed. Here, the distance l1 between the centers of two adjacent first through holes 311a in the same row is defined, and the value range of l1 is 20-40 mm, preferably 30 mm.

[0061] In addition, the row spacing l2 should be appropriate to make the arrangement of the first through holes 311a, the second through holes 312a and the third through holes 313a more uniform and reasonable, so as to obtain a more uniform air field. Here, the distance between the connecting line of the centers of the through holes 31a in the first row and the connecting line of the centers of the through holes 31a in the second row is defined as the row spacing l2, and the value range of l2 is 10-20 mm. Preferably, the row spacing l2 on the first air deflector 311, the second air deflector 312 and the third air deflector 313 is the same, that is, the distance between the connecting line of the centers of the first through holes 311a in the same row and the connecting line of the centers of the first through holes 311a in the adjacent row, the distance between the connecting line of the centers of the second through holes 312a in the same row and the connecting line of the centers of the second through holes 312a in the adjacent row, and the distance between the connecting line of the centers of the third through holes 313a in the same row and the connecting line of the centers of the third through holes 313a in the adjacent row are all the same, and l2 is 14 mm.

[0062] Please refer to Figure 4 , in another embodiment, the air guiding structure 30 is provided with a plurality of air deflectors 31, which are opposite to and spaced from the air outlet surface of the first surface cooler unit 11. The plurality of air deflectors 31 are strip-shaped; along the direction extending from one end of the first surface cooler unit 11 close to the two-way centrifugal fan 20 to the other end, the plurality of air deflectors 31 are spaced apart. In order to make the air field more uniform, starting from one end of the air outlet surface of the first surface cooler unit 11 close to the two-way centrifugal fan 20 to the other end, the spaced width is arranged to increase. In another embodiment, the plurality of air deflectors 31 are set to be rotatable, and the spaced width between the air deflectors 31 is adjusted by rotating the air deflectors 31.

[0063] In other embodiments, the air deflector 31 can also be set as a grid structure or a mesh structure, and is not limited thereto.

[0064] Further, since the air deflector 31 is spaced from the first surface cooler unit 11, in order to achieve a firm connection between the air deflector 31 and the first surface cooler unit 11, the air guiding structure 30 is further provided with a first side plate 32 and a second side plate 33. One end of the first side plate 32 is connected to the end of the air deflector 31 close to the two-way centrifugal fan 20, and the other end is connected to the first surface cooler unit 11, and the connection part is located at the end of the air outlet surface of the first surface cooler unit 11 close to the two-way centrifugal fan 20. Thus, the air resistance in the high wind speed area can be increased, so that part of the air is guided to the low wind speed area, thereby reducing the wind speed in the high wind speed area and increasing the wind speed in the low wind speed area, and improving the uniformity of the wind field. At the same time, the first side plate 32 is provided with a plurality of fourth through holes 32a, which are uniformly arranged on the first side plate 32, so that part of the air is used for heat exchange of the first surface cooler unit 11 at this place. The second side plates 33 are two, and are respectively arranged on both sides of the air deflector 31. One end of the second side plate 33 is connected to the side edge of the air deflector 31, and the other end is connected to the side edge of the first surface cooler unit 11.

[0065] To facilitate the connection between the second side plate 33 and the first surface cooler unit 11, a flanging 331 is provided at the end of the second side plate 33 away from the air deflector 31, and the flanging 331 is connected to the edge of the side of the first surface cooler unit 11 by screws, so as to avoid damage to the first surface cooler unit 11 when the air guiding structure 30 is connected to it.

[0066] Please refer to Figure 5 , further, an opening 30a is provided on one side of the air guiding structure 30, and the opening 30a faces the end of the first surface cooler unit 11 away from the two-way centrifugal fan 20. Thus, the air resistance here can be reduced, which is more conducive to the air flow to the low wind speed area, thereby further improving the uniformity of the entire wind field and saving costs.

[0067] Further, the air guiding structure 30 can be made of sheet metal material or EPP material, preferably made of EPP material. The EPP material has better bending property and good heat preservation property. In the refrigeration condition, it can avoid the phenomenon of condensation and frosting caused by the cold air flowing through the air guiding structure 30.

[0068] It can be understood that the air guiding structure 30 installed on the second surface cooler 12 is the same as the air guiding structure 30 installed on the first surface cooler 11, and will not be elaborated here.

[0069] In summary, by ingeniously arranging the air guiding structure 30 on the air outlet surfaces of the two groups of heat exchanger units 10, according to the principle of gas flow dynamics, the air resistance in different regions is adjusted specifically, effectively balancing the wind speed differences in different regions of the two groups of heat exchanger units 10, significantly improving the uniformity of the wind field, thereby comprehensively enhancing the heat exchange efficiency of the entire heat exchanger unit 10 and avoiding the problem of low local heat exchange efficiency of the heat exchanger unit 10 caused by uneven wind speed. At the same time, since each region of the heat exchanger unit 10 can play its maximum role, unnecessary material waste is reduced, further improving the energy efficiency ratio and use value of the product. Additionally, after the overall heat exchange efficiency is improved, at the same refrigeration / heating capacity, the total area of the required heat exchanger unit 10 can be correspondingly reduced, thereby promoting the optimization of the overall machine size, occupying less space, being conducive to the miniaturization development of the overall machine, reducing material costs, and simplifying the assembly complexity.

[0070] The embodiment of the present application further provides an all-air system, including the finned surface cooler assembly described in any one of the above, and the finned surface cooler assembly is arranged in the all-air treatment equipment cabinet.

[0071] Compared with the prior art, the beneficial effects of the technical solution of the present application are as follows:

[0072] (1) By arranging two groups of surface cooler units and a two-way centrifugal fan with air inlet at both ends in the cabinet, and arranging the air guiding structure in the regions of the two groups of surface cooler units close to the two-way centrifugal fan, and designing the air guiding structure according to the wind speed distribution in the air outlet areas of the two groups of surface cooler units, the wind speed differences in different regions of the surface cooler units are effectively balanced, the wind field distribution on the entire air outlet surface of the surface cooler units is made uniform, thereby enhancing the heat exchange efficiency of the two groups of surface cooler units, improving the heat exchange performance of the system, and reducing the manufacturing cost;

[0073] (2) By arranging the air guiding plate, part of the air flow in the high wind speed region close to the two-way centrifugal fan can be guided to the low wind speed region far from the two-way centrifugal fan to make the wind field distribution uniform; multiple through holes are opened on the air guiding plate, and the air flow after heat exchange of the surface cooler unit in the high wind speed region can flow through the through holes to the two-way centrifugal fan and then be discharged out of the system to achieve heat exchange;

[0074] (3) According to the distribution of the wind field in the air outlet area of the surface cooler unit, the through holes are divided into three groups, and the sizes of the through holes in each group are designed to obtain a more uniform wind field distribution and further improve the heat exchange performance;

[0075] At the same time, the distance between the air guiding plate and the air outlet surface of the surface cooler unit, the arrangement mode, the distance between adjacent through holes, the row spacing, etc. are designed to make better use of the wind field, thereby improving the heat exchange performance;

[0076] (4) By arranging multiple strip-shaped air guide plates at intervals and designing the interval sizes of the multiple air guide plates, the air resistance in the high wind speed area can be increased, and part of the air flow in the high wind speed area can be guided to the low wind speed area, thereby reducing the wind speed in the high wind speed area and increasing the wind speed in the low wind speed area to evenly distribute the wind field; and it can ensure that the air flow after heat exchange of the surface cooler unit located in the high wind speed area flows through the holes to the two-way centrifugal fan and then is discharged to the outside of the system to achieve heat exchange;

[0077] (5) By arranging a first side plate at one end of the air guide plate close to the two-way centrifugal fan, the air resistance at this place can be increased to reduce the wind speed in the high wind speed area and increase the wind speed in the low wind speed area, improving the wind field uniformity. At the same time, a fourth through hole is opened on the first side plate to ensure the heat exchange performance of the surface cooler unit at this place;

[0078] A second side plate is arranged on the side of the air guide plate for supporting and connecting the air guide plate; at the same time, a flanging is arranged on the second side plate, and the second side plate is connected to the side of the surface cooler unit through the flanging to avoid damaging the surface cooler unit during connection;

[0079] (6) An opening is arranged on the side of the air guide structure away from the two-way centrifugal fan, which can reduce the air resistance here, making it more conducive to the air flow to the low wind speed area, thereby further improving the uniformity of the entire wind field and saving costs.

[0080] The above embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and the present invention also intends to include these changes and modifications.

Claims

1. A finned surface cooler assembly is disposed in a cabinet, and is characterized in that: Including: Two groups of finned tube heat exchangers, one ends of the two groups of finned tube heat exchangers intersect, and the other ends are separated from each other and fixedly connected to the side wall of the cabinet; an air inlet area is formed by enclosing one sides of the two groups of finned tube heat exchangers, and a first air outlet area and a second air outlet area are formed by enclosing the other sides with the side wall of the cabinet; A two-way centrifugal fan, arranged on the air outlet side of the intersecting ends of the two groups of finned tube heat exchangers; the two-way centrifugal fan is provided with a first air inlet and a second air inlet, the first air inlet faces the first air outlet area, and the second air inlet faces the second air outlet area; Two groups of air guiding structures, the two groups of air guiding structures are respectively arranged in the first air outlet area and the second air outlet area, and fixedly connected to the areas of the two groups of finned tube heat exchangers close to the two-way centrifugal fan.

2. The finned tube heat exchanger assembly according to claim 1, wherein: The air guiding structure is provided with one or more air guiding plates, and the air guiding plates are opposite to and spaced from the air outlet surface of the finned tube heat exchanger unit; A plurality of through holes are formed in the air guiding plate.

3. The finned tube heat exchanger assembly according to claim 2, wherein: The plurality of through holes are distributed in a straight-line arrangement, and the arrangement direction of each row of the through holes is parallel to the long side of the finned tube heat exchanger unit.

4. The finned tube heat exchanger assembly according to claim 3, wherein: The air guiding plate includes a first air guiding plate, a second air guiding plate and a third air guiding plate connected in sequence; the first air guiding plate is close to the two-way centrifugal fan; The through holes include a first through hole, a second through hole and a third through hole, the first through hole is arranged on the first air guiding plate, the second through hole is arranged on the second air guiding plate, and the third through hole is arranged on the third air guiding plate; the opening sizes of the first through hole, the second through hole and the third through hole increase in sequence.

5. The finned tube heat exchanger assembly according to claim 4, wherein: The first through hole, the second through hole and the third through hole are circular; Define the diameter of the first through hole as d1, the diameter of the second through hole as d2, and the diameter of the third through hole as d3. The value range of d1 is 4-6 mm, the value range of d2 is 6-8 mm, and the value range of d3 is 8-10 mm.

6. The finned tube heat exchanger assembly according to claim 5, wherein: The air outlet surfaces of the air guiding plates are in the same plane and parallel to the air outlet surface of the finned tube heat exchanger unit; the distance range between the air guiding plates and the air outlet surface of the finned tube heat exchanger unit is 30-50 mm; The air guiding plate includes at least two rows of through holes. The centers of two adjacent through holes in the same row have an equal first spacing. The through holes in the second row are staggered with respect to the through holes in the first row. The horizontal spacing formed by the through holes in the first row and the through holes in the second row is a second spacing. The first spacing is greater than the second spacing, forming a triangular arrangement; Define the first spacing as l1, and the value range of l1 is 20-40 mm; Define the distance between the center line of the through holes in the first row and the center line of the through holes in the second row as the row spacing l2, and the value range of l2 is 10-20 mm.

7. The finned surface cooler assembly according to claim 1, wherein: The air guiding structure is provided with a plurality of air guiding plates, which are opposite to and spaced from the air outlet surface of the surface cooler unit; The plurality of air guiding plates are strip-shaped; along the direction from one end of the surface cooler unit close to the two-way centrifugal fan to the other end, the plurality of air guiding plates are spaced apart.

8. The finned surface cooler assembly according to any one of claims 2-7, wherein: The air guiding structure is further provided with a first side plate and a second side plate; One end of the first side plate is connected to one end of the air guiding plate close to the two-way centrifugal fan, and the other end is connected to the surface cooler unit; the first side plate is provided with a fourth through hole; One end of the second side plate away from the air guiding plate is connected with a flanging; one end of the second side plate is connected to the side of the air guiding plate, and the other end is connected to the side of the surface cooler unit through the flanging.

9. The finned surface cooler assembly according to claim 8, wherein: An opening is formed on one side of the air guiding structure, and the opening faces one end of the surface cooler unit away from the two-way centrifugal fan.

10. An all-air system, wherein: It includes the finned surface cooler assembly according to any one of claims 1-9.

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