EC fan

Abstract

The EC fan comprises a mounting plate, an air guide ring, a positioning assembly, a motor, an impeller module and a clamping assembly, the lower side of the mounting plate is fixedly connected with a plurality of positioning sleeves, each positioning sleeve is rotationally connected with a positioning bolt, each positioning bolt is in threaded connection with a first nut and a second nut, and the first nut and the second nut are in threaded connection. The upper end of each positioning bolt is fixedly connected with an adjusting block, the air guide ring is arranged between the first nuts and the second nuts, a plurality of quick connection grooves are formed in the air guide ring, the quick connection grooves abut against the positioning bolts, the quick connection grooves are annularly formed with the axis of the air guide ring as the center, and the positioning assembly is used for positioning the first nuts. The positioning assembly is arranged on the outer side of the air guide ring. According to the technical scheme, accurate butt joint between the air guide ring and the air outlet of the impeller module is facilitated, the air outlet effect is guaranteed, the disassembly process is simplified, the disassembly difficulty is reduced, and the maintenance efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of EC fans, and in particular to an EC fan. Background Art

[0002] EC fans are centrifugal fans that use digital brushless DC external rotor motors, or EC motors. EC motors are maintenance-free brushless DC motors with built-in intelligent control modules. They are equipped with RS485 outputs, 0-10V sensor outputs, 4-20mA speed control switch outputs, alarm outputs, and master-slave signal outputs. They offer advantages such as high intelligence, energy saving, high efficiency, long life, low vibration, low noise, and continuous operation.

[0003] Current technology requires the motor and impeller to be connected via multiple legs, then mounted on a plate attached to the legs. Due to the numerous connection points, workers must adjust multiple bolts during disassembly or installation, which complicates the process and results in slow assembly of the motor and impeller, hindering rapid motor maintenance. Furthermore, during assembly, the air guide ring and the impeller outlet axis are difficult to precisely align, reducing the fan's airflow efficiency. Summary of the Invention

[0004] The main purpose of the present invention is to provide an EC fan, which is designed to facilitate the precise docking of the position between the air guide ring and the air outlet of the impeller module, ensure the air outlet effect, simplify the disassembly process, reduce the difficulty of disassembly, and significantly improve maintenance efficiency.

[0005] To achieve the above objectives, the present invention provides an EC fan, comprising: A mounting plate, wherein a plurality of positioning sleeves are fixedly connected to the lower side of the mounting plate, each positioning sleeve is rotatably connected to a positioning bolt, each positioning bolt is threadedly connected to a first nut and a second nut, and an upper end of each positioning bolt is fixedly connected to an adjustment block; An air guide ring is provided between the plurality of first nuts and the plurality of second nuts. The air guide ring is provided with a plurality of quick-connect grooves, the quick-connect grooves abutting against the positioning bolts. Each quick-connect groove is provided in an annular shape with the axis of the air guide ring as the center. A positioning assembly, used for positioning the first nut, wherein the positioning assembly is arranged outside the air guide ring; A motor and an impeller module, wherein the motor and the impeller module are fixedly connected, and the air outlet of the impeller module abuts against the inner wall of the air guide ring; The clamping assembly is used to fix the relative position between the air guide ring and the impeller module, and the clamping assembly is arranged on one side of the mounting plate.

[0006] In a possible implementation, the positioning component includes: A positioning ring is provided on the mounting plate, the positioning ring abuts against the outer wall of the air guide ring, and a plurality of positioning grooves are provided on the positioning ring; A plurality of positioning blocks, each of which is fixedly connected to the inner wall of the positioning ring and abuts against the outer wall of the first nut to limit the position of the first nut; A plurality of positioning screws are each threadedly connected to the mounting plate, and the positioning screw abuts against the inner wall of the positioning slot.

[0007] In a possible implementation, a plurality of shock-absorbing sponges are fixedly connected to the inner wall of the positioning ring.

[0008] In a possible implementation, the locking assembly includes: A plurality of positioning pins, each of which is fixedly connected to the mounting plate, each of which is clamped with a positioning column, and each of which has an end away from the positioning pin and a receiving plate clamped thereon; A positioning ring plate, the positioning ring plate being fixedly connected to the outer wall of the motor; A locking plate, the locking plate being arranged on the upper side of the positioning ring plate; A plurality of positioning studs are provided between the receiving plate and the positioning plate, the upper end of each positioning stud is threadedly connected with a positioning nut, and the lower end of each positioning stud is detachably fixedly connected to the positioning column.

[0009] In a possible embodiment, a plurality of positioning grooves are provided on the lower side of the receiving plate, each positioning column abuts against the inner wall of the positioning groove, and a positioning hole is provided at one end of each positioning column close to the positioning stud, and the positioning hole is coaxially threadedly connected to the positioning stud.

[0010] In a possible implementation, a plurality of connecting ring plates are fixedly connected to the receiving plate, and each of the connecting ring plates is in contact with the outer curved surface of the motor.

[0011] In a possible implementation, a plurality of buffer sponges are connected to the receiving plate, and each of the buffer sponges is arranged between the positioning ring plate and the locking plate.

[0012] In a possible implementation, a wire winding block is fixedly connected to the positioning plate to facilitate arrangement of the input wires of the motor.

[0013] The technical solution of the present invention, through the setting of the quick-connect groove, can ensure that the axis of the air guide ring is better consistent with the axis of the impeller module during installation, thereby making the wind field more stable. Then, through the design of the positioning component, the connection between the mounting plate and the air guide ring can achieve precise positioning. When installing, workers can first fix the relative position between the mounting plate and the air guide ring, and adjust the distance between the two with the help of positioning bolts. This adjustment not only helps to accurately connect the position between the air guide ring and the air outlet of the impeller module, but also makes the wind field blown out by the impeller module more stable, thereby improving the performance of the entire system. At the same time, the positioning component further enhances the relative position fixation between the air guide ring and the impeller module, avoiding the complicated operation of removing multiple bolts in the traditional connection method, so that workers do not need to deal with cumbersome multiple connection points when dismantling or maintaining the motor, impeller module or positioning column, which greatly reduces the number of bolts, simplifies the disassembly process, reduces the difficulty of disassembly, and significantly improves maintenance efficiency. At the same time, it reduces the complexity of the connection points, thereby improving the safety and durability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0015] Figure 1 A schematic diagram of an EC fan of the present invention Figure 1 ; Figure 2 Schematic diagram of an EC fan explosion in the present invention Figure 1 ; Figure 3 This is a schematic diagram of an EC fan explosion in the present invention. Figure 2 ; Figure 4 for Figure 3 A is an enlarged schematic diagram; Figure 5 This is a schematic diagram of an EC fan explosion in the present invention. Figure 3 ; Figure 6 for Figure 5 A magnified schematic diagram of middle B; Figure 7 for Figure 5 Enlarged schematic diagram of C in the middle.

[0016] Description of Figure Numbers: 11. Mounting plate; 12. Positioning sleeve; 13. Positioning bolt; 14. First nut; 15. Second nut; 16. Adjustment block; 17. Air guide ring; 171. Quick-connect groove; 18. Motor; 19. Impeller module; 21. Positioning ring; 211. Positioning groove; 22. Positioning block; 23. Positioning screw; 24. Shock-absorbing sponge; 31. Positioning pin; 32. Positioning column; 321. Positioning hole; 33. Attachment plate; 331. Positioning groove; 34. Positioning ring plate; 35. Positioning plate; 36. Positioning stud; 37. Positioning nut; 38. Connecting ring plate; 39. Buffer sponge; 310. Coil block.

[0017] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0019] The present invention provides an EC fan.

[0020] Reference Figure 1 to 7, including: A mounting plate 11 is provided, with a plurality of positioning sleeves 12 fixedly connected to the lower side of the mounting plate 11. A positioning bolt 13 is rotatably connected to each positioning sleeve 12. A first nut 14 and a second nut 15 are threadedly connected to each positioning bolt 13. An adjusting block 16 is fixedly connected to the upper end of each positioning bolt 13. The air guide ring 17 is disposed between the plurality of first nuts 14 and the plurality of second nuts 15. The air guide ring 17 is provided with a plurality of quick-connect grooves 171, which abut against the positioning bolts 13. Each quick-connect groove 171 is formed in a ring shape with the axis of the air guide ring 17 as the center. A positioning assembly, used for positioning the first nut 14, and the positioning assembly is arranged outside the air guide ring 17; The motor 18 and the impeller module 19 are fixedly connected, and the air outlet of the impeller module 19 abuts against the inner wall of the air guide ring 17; A positioning assembly is used to fix the relative position between the air guide ring 17 and the impeller module 19, and the positioning assembly is arranged on one side of the mounting plate 11; By setting the quick-connect groove 171, the axis of the air guide ring 17 can be better aligned with the axis of the impeller module 19 during installation, thereby making the wind field more stable. Then, through the design of the positioning component, the connection between the mounting plate 11 and the air guide ring 17 can achieve precise positioning. When installing, the worker can first fix the relative position between the mounting plate 11 and the air guide ring 17, and adjust the distance between the two with the help of the positioning bolts 13. This adjustment not only helps to accurately connect the position between the air guide ring 17 and the air outlet of the impeller module 19, but also makes the wind field blown out by the impeller module 19 more stable, thereby improving the performance of the entire system. At the same time, the positioning component further enhances the relative position fixity between the air guide ring 17 and the impeller module 19, avoiding the complicated operation of removing multiple bolts in the traditional connection method. As a result, when workers remove or maintain the motor 18, the impeller module 19 or the positioning column 32, they do not need to deal with multiple cumbersome connection points, which greatly reduces the number of bolts, simplifies the disassembly process, and reduces the difficulty of disassembly. This significantly improves maintenance efficiency while reducing the complexity of connection points, thereby enhancing equipment safety and durability.

[0021] Reference Figures 1 to 7 , the positioning components include: The positioning ring 21 is provided on the mounting plate 11 and abuts against the outer wall of the air guide ring 17. The positioning ring 21 is provided with a plurality of positioning grooves 211. A plurality of positioning blocks 22, each of which is fixedly connected to the inner wall of the positioning ring 21, and abuts against the outer wall of the first nut 14 to limit the position of the first nut 14; A plurality of positioning screws 23, each of which is threadedly connected to the mounting plate 11, and the positioning screws 23 abut against the inner wall of the positioning slot 211; Using the positioning assembly, workers simply rotate the positioning ring 21 to connect the mounting plate 11 to the air guide ring 17, so that the positioning block 22 abuts or separates from the side of the first nut 14. If the positioning block 22 abuts the side of the first nut 14, the side of the positioning bolt 13 will be restricted, and the worker can then rotate the second nut 15 to connect the air guide ring 17 to the mounting plate 11 and fix the relative position between the two. The same process is followed when removing the air guide ring 17, so there is no need to elaborate further. When separated, workers can rotate the positioning bolt 13 using the adjustment block 16, adjusting the first nut 14 along the axial direction of the positioning bolt 13 to fine-tune the relative distance between the air guide ring 17 and the mounting plate 11. This allows for precise adjustment of the relative position between the air guide ring 17 and the air outlet of the impeller module 19. Furthermore, workers can select first nuts 14 with different outer diameters to further adjust the relative position between the air guide ring 17 and the air outlet of the impeller module 19, ensuring precise matching and optimized performance of the entire system.

[0022] Reference Figures 1 to 4 , a number of shock-absorbing sponges 24 are fixedly connected to the inner wall of the positioning ring 21; The damping sponge 24 fills the gap between the mounting plate 11 and the air guide ring 17 during maintenance and removal, providing sufficient support. The damping sponge 24 effectively cushions the air guide ring 17's own weight during installation, while also reducing vibration caused by high-speed airflow, thereby minimizing the impact of vibration on the air guide ring 17 and its connecting components. This makes it easier for workers to remove and place the air guide ring 17, enhancing maintenance and operation convenience.

[0023] Reference Figures 1 to 7 , the card position components include: A plurality of latching pins 31, each latching pin 31 is fixedly connected to the mounting plate 11, each latching pin 31 is latched with a latching column 32, and each latching column 32 is latched with a receiving plate 33 at one end away from the latching pin 31; A positioning ring plate 34 is fixedly connected to the outer wall of the motor 18; The locking plate 35 is arranged on the upper side of the positioning ring plate 34; A plurality of locking studs 36, each of which is disposed between the receiving plate 33 and the locking plate 35, wherein the upper end of each locking stud 36 is threadedly connected to a locking nut 37, and the lower end of each locking stud 36 is detachably fixed to the locking column 32; Thanks to the design of the locking assembly, when workers need to fix the relative position of the motor 18 and impeller module 19, they simply stack the motor 18, impeller module 19, receiving plate 33, positioning ring plate 34, and locking plate 35 in order. Then, one end of the locking column 32 engages the locking pin 31, and the other end engages the cylindrical surface of the receiving plate 33. After tightening several locking studs 36, the relative position of the motor 18 and impeller module 19 is fixed. Compared with traditional connection methods, workers do not need to remove bolts at multiple connection points when removing or maintaining the motor 18, impeller module 19, or locking column 32. This significantly reduces the number of connecting bolts, simplifies the disassembly process, and reduces the difficulty of disassembly. Maintenance efficiency is significantly improved. In addition, the reduced complexity of connection points not only improves maintenance efficiency but also enhances the safety and durability of the equipment. Overall, the equipment is more convenient during installation, maintenance, and disassembly, significantly improving the stability and reliability of the system.

[0024] Reference Figures 3 to 6 , a plurality of positioning grooves 331 are opened on the lower side of the receiving plate 33, and each positioning column 32 is in contact with the inner wall of the positioning groove 331. A positioning hole 321 is opened at one end of each positioning column 32 close to the positioning stud 36, and the positioning hole 321 is coaxially threadedly connected with the positioning stud 36; The upper surface of the retaining column 32 tightly abuts the inner wall of the retaining groove 331, allowing external forces acting on the retaining column 32 to be effectively transmitted to the retaining groove 331 through the portion in contact with the retaining groove 331, thereby increasing the supporting strength and connection strength of the retaining column 32. Simultaneously, when the retaining nut 37 is tightened on the retaining stud 36, the lower end of the retaining stud 36 secures the retaining column 32 at the end closest to the retaining stud 36, ensuring that the relative position between the motor 18 and the impeller module 19 remains fixed. This eliminates the need for workers to tediously remove bolts at multiple connection points when removing or maintaining the motor 18, impeller module 19, or retaining column 32. This reduces the number of connecting bolts, simplifies the disassembly process, reduces the difficulty of disassembly, and improves maintenance efficiency. Furthermore, the reduced complexity of connection points not only improves maintenance efficiency but also enhances the safety and durability of the equipment. This makes installation, maintenance, and disassembly of the equipment more convenient, significantly improving the stability and reliability of the system.

[0025] Reference Figures 1 to 4 , a plurality of connecting ring plates 38 are fixedly connected to the receiving plate 33, and each connecting ring plate 38 is in contact with the outer curved surface of the motor 18; The connecting ring plate 38 can effectively increase the stable connection between the motor 18 and the receiving plate 33, improve the mechanical structural strength of the overall equipment, avoid loosening or falling off due to external force or vibration, and provide better support for the motor 18, ensuring that the motor 18 remains stable during operation, avoiding mechanical damage or functional instability due to insufficient support.

[0026] Reference Figures 1 to 5 , a plurality of buffer sponges 39 are connected to the receiving plate 33, and each buffer sponge 39 is arranged between the positioning ring plate 34 and the positioning plate 35; The buffer sponge 39 is located between the positioning ring plate 34 and the retaining plate 35, which can effectively alleviate the vibration and impact generated by the motor 18 during operation, prevent these vibrations from affecting other parts of the equipment, reduce direct contact between equipment components, reduce the risk of wear and collision, thereby extending the service life of the equipment, and can also effectively reduce the noise generated during mechanical operation, especially in the case of high-frequency vibration or impact, which helps to improve the quietness of the equipment. The softness and elasticity of the buffer sponge 39 can fine-tune the equipment, thereby helping to optimize the fitting accuracy between the positioning ring plate 34 and the retaining plate 35, and reduce the instability caused by assembly errors.

[0027] Reference Figures 2 to 5 , a wire coil block 310 is fixedly connected to the positioning plate 35 to facilitate the arrangement of the input wires of the motor 18; The wire winding block 310 helps to organize the input wires of the motor 18, avoids the mess of wires, reduces cable entanglement, improves the neatness and maintainability of the motor system, makes the layout of the wires more compact and reasonable, helps to optimize the spatial layout of the equipment, and improves the overall working efficiency of the equipment.

[0028] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An EC fan, characterized in that: include: A mounting plate (11), wherein a plurality of positioning sleeves (12) are fixedly connected to the lower side of the mounting plate (11), each positioning sleeve (12) is rotatably connected to a positioning bolt (13), each positioning bolt (13) is threadedly connected to a first nut (14) and a second nut (15), and an upper end of each positioning bolt (13) is fixedly connected to an adjustment block (16); An air guide ring (17), the air guide ring (17) is arranged between a plurality of first nuts (14) and a plurality of second nuts (15), a plurality of quick-connect grooves (171) are provided on the air guide ring (17), the quick-connect grooves (171) abut against the positioning bolts (13), and each quick-connect groove (171) is annularly opened with the axis of the air guide ring (17) as the center; A positioning assembly, used for positioning the first nut (14), wherein the positioning assembly is arranged outside the air guide ring (17); A motor (18) and an impeller module (19), wherein the motor (18) and the impeller module (19) are fixedly connected, and an air outlet of the impeller module (19) abuts against an inner wall of the air guide ring (17); A positioning assembly is used to fix the relative position between the air guide ring (17) and the impeller module (19), and the positioning assembly is arranged on one side of the mounting plate (11).

2. The EC blower according to claim 1, characterized in that The positioning component includes: A positioning ring (21), the positioning ring being arranged on the mounting plate (11), the positioning ring (21) being in contact with the outer wall of the air guide ring (17), and a plurality of positioning grooves (211) being formed on the positioning ring (21); A plurality of positioning blocks (22), each of the positioning blocks (22) is fixedly connected to the inner wall of the positioning ring (21), and the positioning blocks (22) abut against the outer wall of the first nut (14) to limit the position of the first nut (14); A plurality of positioning screws (23), each of the positioning screws (23) is threadedly connected to the mounting plate (11), and the positioning screws (23) abut against the inner wall of the positioning groove (211).

3. The EC blower according to claim 2, characterized in that A plurality of shock-absorbing sponges (24) are fixedly connected to the inner wall of the positioning ring (21).

4. The EC blower according to claim 1, characterized in that The positioning component includes: A plurality of positioning pins (31), each of the positioning pins (31) is fixedly connected to the mounting plate (11), each positioning pin (31) is clamped with a positioning column (32), and each positioning column (32) is clamped with a receiving plate (33) at one end away from the positioning pin (31); A positioning ring plate (34), wherein the positioning ring plate (34) is fixedly connected to the outer wall of the motor (18); A latching plate (35), the latching plate (35) being arranged on the upper side of the positioning ring plate (34); A plurality of positioning studs (36) are provided between the receiving plate (33) and the positioning plate (35); the upper end of each positioning stud (36) is threadedly connected to a positioning nut (37); and the lower end of each positioning stud (36) is detachably fixedly connected to the positioning column (32).

5. The EC blower according to claim 4, characterized in that A plurality of latching grooves (331) are provided on the lower side of the receiving plate (33), and each of the latching posts (32) abuts against the inner wall of the latching groove (331). A latching hole (321) is provided at one end of each latching post (32) close to the latching stud (36), and the latching hole (321) is coaxially threadedly connected to the latching stud (36).

6. The EC blower according to claim 4, characterized in that A plurality of connecting ring plates (38) are fixedly connected to the receiving plate (33), and each connecting ring plate (38) is in contact with the outer curved surface of the motor (18).

7. The EC blower according to claim 4, characterized in that A plurality of buffer sponges (39) are connected to the receiving plate (33), and each of the buffer sponges (39) is arranged between the positioning ring plate (34) and the locking plate (35).

8. The EC blower according to claim 4, characterized in that A wire coil block (310) is fixedly connected to the positioning plate (35) to facilitate arrangement of the input wires of the motor (18).

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