A sinking fan

Abstract

The utility model discloses a sunken fan, including mounting panel, the air duct is inserted and is installed in the middle position of mounting panel. The motor is installed in the air duct, and the motor drive connection has the impeller, is provided with the mounting bracket between the motor and the air duct, and the motor is fixedly installed in the air duct through the mounting bracket, and the air duct includes the air inlet end and the air outlet end, and the diameter of the air inlet end is less than the diameter of the air outlet end, and the impeller is located the position close to the air inlet end, and the motor is located the position close to the air outlet end. The fan part of the utility model is located in the central air conditioning outdoor unit, can reduce the occupation of the machine outer space.

Description

Technical Field

[0001] This utility model relates to the technical field, and more specifically, to a submerged fan. Background Technology

[0002] When installing fans on the outdoor units of central air conditioning systems, the fans are typically mounted on the top or side, causing the entire fan to protrude from the unit casing and significantly increasing the overall external space occupied by the equipment. This structural defect is particularly prominent in application scenarios where external installation space is severely limited, such as high-rise buildings and narrow equipment platforms, greatly restricting equipment selection and layout, and even making installation impossible. Therefore, a new installation structure is needed to overcome the aforementioned space limitations. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a submerged fan.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a submerged fan, including a mounting plate, an air guide tube inserted and installed in the middle of the mounting plate, a motor installed inside the air guide tube, an impeller connected to the motor, a mounting bracket provided between the motor and the air guide tube, and the motor fixedly installed inside the air guide tube by the mounting bracket.

[0006] Furthermore, the air guide includes an air inlet and an air outlet. The diameter of the air inlet is smaller than the diameter of the air outlet. The impeller is located near the air inlet, and the motor is located near the air outlet.

[0007] Furthermore, a reinforcing ring is connected to the middle of the mounting plate, and the reinforcing ring is set against the outer wall of the air guide duct.

[0008] Furthermore, the air duct includes a flange, and one end of the mounting bracket is fixedly connected to the flange.

[0009] Furthermore, the mounting frame includes a mounting ring and several guide vane supports. One end of each guide vane support is connected to the mounting ring, and each guide vane support includes a guide vane, which has a curved structure.

[0010] Furthermore, the guide vane support also includes connecting block one and connecting block two. The two ends of the guide vane are connected to connecting block one and connecting block two respectively. Connecting block one is connected to the mounting ring by bolts.

[0011] Furthermore, the mounting ring includes a mounting ring and a positioning ring. The positioning ring is located on the inner circumference of the mounting ring and extends along the axial direction of the mounting ring. The mounting ring has several fixing holes.

[0012] Furthermore, the connecting block 1 includes a connecting plate 2 and a fixing plate 2 connected to each other. The connecting plate 2 is vertically arranged, and the fixing plate 2 is horizontally arranged. The fixing plate 2 has a mounting hole 2 that matches the fixing hole 1.

[0013] Furthermore, the connecting block 2 includes a fixed plate 1 and a connecting plate 1 connected to each other. The connecting plate 1 is vertically arranged, and the fixed plate 1 is horizontally arranged. The fixed plate 1 has a mounting hole 1.

[0014] Furthermore, one end of the guide vane is connected to the outer side of the second connecting plate, and the other end of the guide vane is connected to the inner side of the first connecting plate.

[0015] The beneficial effects of this utility model are: the fan adopts a sunken installation method, so that part of the fan is located inside the outdoor unit of the central air conditioner, reducing the space occupied outside the unit, which is suitable for situations where the external space of the outdoor unit of the central air conditioner is limited. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a submerged fan in this embodiment;

[0017] Figure 2 This is a side view of the submerged fan in this embodiment;

[0018] Figure 3 This is a top view of the submerged fan in this embodiment;

[0019] Figure 4 This is a schematic diagram of one structure of the guide vane support in this embodiment;

[0020] Figure 5 This is a top view of the guide vane support in this embodiment;

[0021] Figure 6 This is a side view of the guide vane support in this embodiment;

[0022] Figure 7 This is a schematic diagram of one usage state of the submerged fan in this embodiment.

[0023] Reference numerals in the attached drawings: 1. Mounting ring; 2. Guide vane bracket; 3. Mounting ring; 4. Positioning ring; 5. Fixing hole one; 6. Connecting block one; 7. Guide vane; 8. Connecting block two; 9. Fixing plate one; 10. Connecting plate one; 11. Mounting hole one; 12. Connecting plate two; 13. Fixing plate two; 14. Mounting plate; 15. Air guide tube; 16. Flanged edge; 17. Motor; 18. Mounting block; 19. Impeller; 20. Mounting bracket; 21. Reinforcing ring; 22. Fin. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-7 As shown, a submerged fan includes a mounting plate 14, an air guide duct 15, and a fan. The mounting plate 14 has an opening in the middle, as shown. Figure 2 As shown, the air guide duct 15 is conical, with the smaller diameter end inserted into the hole, so that the outer wall of the air guide duct 15 contacts the hole wall in the middle of the mounting plate 14. The two are fixed together by welding, riveting, or other methods. Then, a flared mouth is formed at the smaller diameter end of the air guide duct 15 using a flanging mold or spinning.

[0026] The fan includes a motor 17 and an impeller 19, with the motor 17 driving the impeller 19 to rotate. The motor 17 and impeller 19 are located inside the air duct 15. Specifically, the motor 17 is fixedly mounted to the air duct 15 via a mounting bracket 20. The motor 17 and impeller 19 are located above and below the mounting plate 14, respectively. The portion below the mounting plate 14 is located inside the outdoor unit of the central air conditioning system, thus reducing the structure outside the outdoor unit and minimizing the external space occupied. This design is suitable for situations where the external space of the central air conditioning outdoor unit is limited.

[0027] The air guide duct 15 includes an air inlet end and an air outlet end. The end of the air guide duct 15 with a smaller diameter is the air inlet end, and the end of the air guide duct 15 with a larger diameter is the air outlet end. The diameter of the air guide duct 15 gradually and uniformly increases along the direction from the air inlet end to the air outlet end. The impeller 19 is located near the air inlet end, and the motor 17 is located near the air outlet end.

[0028] like Figure 7 As shown, mounting plate 14 is installed on the upper part of fins 22, such that the inlet end of air guide duct 15 is located between fins 22. Motor 17 drives impeller 19 to rotate, drawing in ambient air from all sides. After the air flows through fins 22, the hot air is discharged along air guide duct 15. As the airflow moves from the inlet end to the outlet end, the flow cross-sectional area increases, and the airflow velocity decreases. The reduced kinetic energy is converted into pressure energy, enabling the airflow to overcome external resistance, such as natural wind and exhaust from other outdoor units. This ensures that the discharged hot air can be blown to a farther location, preventing hot air from being drawn back in by the fan.

[0029] A reinforcing ring 21 is connected to the middle of the mounting plate 14. The taper of the reinforcing ring 21 is the same as that of the air duct 15. The reinforcing ring 21 is set to abut against the outer wall of the air duct 15 to increase the contact area, thereby enhancing the firmness of the connection between the two.

[0030] like Figure 4 As shown, the mounting bracket 20 includes a mounting ring 1 and a guide vane bracket 2. The mounting ring 1 is fixedly mounted on the motor 17. One end of the guide vane bracket 2 is connected to the mounting ring 1 by bolts, and the other end of the guide vane bracket 2 is connected to the flange 16 at the air outlet end of the air duct 15.

[0031] Mounting ring 1 includes a mounting ring 3 and a positioning ring 4. The positioning ring 4 is located on the inner circumference of the mounting ring 3 and extends axially along the mounting ring 3. Motor 17 includes several mounting blocks 18 located on the outer wall of motor 17. Mounting ring 3 is connected to mounting blocks 18 by bolts, thereby fixing it to motor 17. The inner diameter of positioning ring 4 is slightly larger than the diameter of motor 17. During installation, positioning ring 4 is fitted over motor 17, serving to position the mounting ring 3.

[0032] Multiple guide vane supports 2 are provided, and the multiple guide vane supports 2 are evenly distributed around the mounting ring 1, thereby increasing the connection strength with the motor 17 and the air guide tube 15, that is, increasing the installation stability of the motor 17 in the air guide tube 15.

[0033] The guide vane support 2 includes a first connecting block 6, a second connecting block 8, and a guide vane 7, with the guide vane 7 located between the first connecting block 6 and the second connecting block 8. A portion of the first connecting block 6 is fixed to the mounting block 18 and the mounting ring 3 by bolts. The first connecting block 6 is directly connected to the mounting block 18, allowing a portion of the guide vane support 2 to directly support the motor 17. The remaining portion of the guide vane support 2 indirectly supports the motor 17 by supporting the mounting ring 3.

[0034] Connecting block 16 includes a connecting plate 22 and a fixing plate 23 connected together. The connecting plate 22 is vertically arranged, and the fixing plate 23 is horizontally arranged. The fixing plate 23 is located below the mounting ring 3. The fixing plate 213 has a mounting hole 2 that mates with the fixing hole 5. The fixing hole 5 and the mounting hole 2 are fixedly connected by screwing in bolts. Connecting block 28 includes a fixing plate 19 and a connecting plate 10 connected together. The connecting plate 10 is vertically arranged, and the fixing plate 19 is horizontally arranged. The fixing plate 19 has a mounting hole 11 that mates with the fixing hole 2 at the end of the air guide duct 15. The fixing is completed by screwing in bolts.

[0035] One end of the guide vane 7 is connected to the outer side of the connecting plate 12 by welding, and the other end of the guide vane 7 is also connected to the inner side of the connecting plate 10 by welding.

[0036] The guide vane 7 is inclined in the vertical direction and has a curved structure, which can guide the air discharged by the fan, regulate the airflow path, reduce air turbulence, make the air pass through more concentratedly and smoothly, avoid disorderly air diffusion, and improve the aerodynamic efficiency of the fan.

[0037] The curvature of guide vane 7 near the end of connecting block 6 is less than that near the end of connecting block 8, and the curvature increases uniformly. When the fan is working, the air vortex generated at the blade tip is stronger. By increasing the curvature of guide vane 7 at this position, the airflow can be better guided and the vortex can be reduced.

[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A submerged fan, characterized in that, The device includes a mounting plate (14), into which an air guide tube (15) is inserted and installed. A motor (17) is installed inside the air guide tube (15), and the motor (17) drives an impeller (19). A mounting bracket (20) is provided between the motor (17) and the air guide tube (15), and the motor (17) is fixedly installed inside the air guide tube (15) by the mounting bracket (20).

2. The submerged fan according to claim 1, characterized in that, The air guide tube (15) includes an air inlet end and an air outlet end. The diameter of the air inlet end is smaller than the diameter of the air outlet end. The impeller (19) is located near the air inlet end, and the motor (17) is located near the air outlet end.

3. A submerged fan according to claim 1, characterized in that, A reinforcing ring (21) is connected to the middle of the mounting plate (14), and the reinforcing ring (21) is set to abut against the outer wall of the air guide tube (15).

4. A submerged fan according to claim 1, characterized in that, The air guide tube (15) includes a flange (16), and one end of the mounting bracket (20) is fixedly connected to the flange (16).

5. A submerged fan according to claim 1, characterized in that, The mounting bracket (20) includes a mounting ring (1) and several guide vane supports (2). One end of the guide vane support (2) is connected to the mounting ring (3). The guide vane support (2) includes a guide vane (7), which is a curved structure.

6. A submerged fan according to claim 5, characterized in that, The guide vane support (2) also includes a first connecting block (6) and a second connecting block (8). The two ends of the guide vane (7) are connected to the first connecting block (6) and the second connecting block (8) respectively. The first connecting block (6) is connected to the mounting ring (1) by bolts.

7. A submerged fan according to claim 5, characterized in that, The mounting ring (1) includes a mounting ring (3) and a positioning ring (4). The positioning ring (4) is located on the inner circumference of the mounting ring (3) and extends along the axial direction of the mounting ring (3). The mounting ring (3) has several fixing holes (5).

8. A submerged fan according to claim 6, characterized in that, The connecting block 1 (6) includes a connecting plate 2 (12) and a fixing plate 2 (13) connected to each other. The connecting plate 2 (12) is vertically arranged, and the fixing plate 2 (13) is horizontally arranged. The fixing plate 2 (13) has a mounting hole 2 that matches the fixing hole 1 (5).

9. A submerged fan according to claim 8, characterized in that, The second connecting block (8) includes a first fixing plate (9) and a first connecting plate (10) connected to each other. The first connecting plate (10) is vertically arranged, and the first fixing plate (9) is horizontally arranged. The first fixing plate (9) has a first mounting hole (11).

10. A submerged fan according to claim 9, characterized in that, One end of the guide vane (7) is connected to the outer side of the connecting plate two (12), and the other end of the guide vane (7) is connected to the inner side of the connecting plate one (10).

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