Structural bracket for mounting fan

Abstract

The invention relates to the field of fans, in particular to a structural support for mounting a fan, which comprises a rack, a motor and a fan blade mechanism, the rack comprises a top frame, a bottom frame and a plurality of upright posts, the top frame and the bottom frame are arranged in parallel, one end of each upright post is fixed on the top frame, the other end of each upright post is fixed on the bottom frame, a through hole is formed in the bottom frame, and the motor is mounted on the top frame; the fan blade mechanism is connected to the motor, and an output shaft of the motor and the through hole of the bottom frame are coaxially arranged. The motor and the fan blade mechanism have the effect of improving the vibration resistance of the motor and the fan blade mechanism.

Description

Technical Field

[0001] This application relates to the field of fans, and in particular to a structural bracket for installing a fan. Background Art

[0002] An EC fan is a mechanism widely used in the field of mechanical manufacturing. It is also called a centrifugal fan. The motor power supply of the centrifugal fan is a DC power supply. It has a simple structure and good speed regulation performance.

[0003] The related centrifugal fan includes a motor and a fan blade mechanism. The output shaft of the motor is connected to the fan blade mechanism. The housing of the motor is fixed on the mechanical housing. The output shaft of the motor rotates and drives the fan blade mechanism to rotate, so as to achieve the effect of exhausting or blowing air. The motor includes a stator core, a plastic-coated shaft, a plurality of magnetic steels and a rotor cup. The stator core is sleeved on the plastic-coated shaft. A through hole is opened at the center of the bottom of the rotor cup. The plastic-coated shaft is inserted into the through hole. The stator core is located in the rotor cup. A plurality of magnetic steels are arranged at equal intervals on the inner wall of the rotor cup. An end cover is arranged on the rotor cup. The end cover is fixedly connected to the plastic-coated shaft. The end cover is rotatably connected to the rotor cup. The user fixes the end cover on the mechanical housing, connects the fan blade mechanism to the rotor cup, and inputs direct current to the motor, so that a magnetic force is generated between the stator core and the magnetic steels, and then the rotor cup and the fan blade mechanism are driven to rotate relative to the plastic-coated shaft.

[0004] The above-mentioned related technical solutions have the following defects: When the motor drives the fan blade mechanism to rotate, vibration is easily generated. Under the continuous vibration, the connection between the motor and the fan blade mechanism is prone to looseness, and the vibration damages the structures of the motor and the fan blade mechanism. Summary of the Invention

[0005] In order to improve the anti-vibration performance of the motor and the fan blade mechanism, this application provides a structural bracket for installing a fan.

[0006] The structural bracket for installing a fan provided by this application adopts the following technical solution: A structural bracket for installing a fan includes a frame, a motor and a fan blade mechanism. The frame includes a top frame, a bottom frame and a plurality of columns. The top frame and the bottom frame are arranged in parallel. One end of the column is fixed on the top frame, and the other end is fixed on the bottom frame. A through hole is opened on the bottom frame. The motor is installed on the top frame. The fan blade mechanism is connected to the motor. The output shaft of the motor is coaxially arranged with the through hole of the bottom frame.

[0007] By adopting the above technical solution, a frame is arranged outside the motor, and the motor is fixedly connected to the top frame. The user installs the bottom frame on the mechanical housing with the opening of the bottom frame facing the interior of the machine, achieving the effect of quickly installing the fan. By arranging a plurality of columns between the bottom frame and the top frame, the columns can support and fix the top frame. The mechanical energy generated by the vibration of the motor is conducted to the frame, which can reduce the amplitude of vibration generated during the operation of the motor, thereby improving the anti-vibration performance of the fan.

[0008] Optionally, a plurality of support frames are arranged on the bottom frame. The support frames are rod-shaped structures, perpendicular to the columns. Each end of the support frame is connected to a column, and the plurality of support frames enclose a frame structure.

[0009] By adopting the above technical solution, by arranging a plurality of support frames on the bottom frame, the support frames are connected between two adjacent columns. When the motor is operating, the amplitude of vibration of the columns can be reduced, and the amplitudes of vibration of the top frame and the motor are relatively small.

[0010] Optionally, the motor includes a stator core, a plastic-coated shaft, a plurality of magnetic steels, and a rotor cup. The stator core is sleeved on the plastic-coated shaft. The stator core and the plastic-coated shaft are fixed on the top frame and located between the top frame and the bottom frame. The rotor cup is rotatably connected to the plastic-coated shaft. The plurality of magnetic steels are arranged at equal intervals in the rotor cup. The fan blade mechanism is connected to the rotor cup.

[0011] By adopting the above technical solution, by arranging the stator core outside the plastic-coated shaft and the magnetic steels inside the rotor cup, when the motor is powered on and operating, a magnetic field is generated inside the motor, and a magnetic force is generated between the stator core and the magnetic steels, so that the rotor cup can rotate on the plastic-coated shaft, and the rotor cup drives the fan blade mechanism to rotate.

[0012] Optionally, a flange is arranged on the rotor cup. The fan blade mechanism is detachably connected to the rotor cup through the flange.

[0013] By adopting the above technical solution, by arranging the flange outside the rotor cup, the fan blade mechanism and the rotor cup are detachably connected through the flange, which is convenient for the user to install fan blade mechanisms of different sizes on the motor.

[0014] Optionally, the fan blade mechanism includes an impeller bottom plate, a front disc, and a plurality of blades. The impeller bottom plate and the front disc are disc-shaped structures. The impeller bottom plate is coaxially connected to the flange. The impeller bottom plate and the front disc are parallel and coaxially arranged. The blades are arranged at equal intervals along the circumference of the impeller bottom plate. One end of each blade is fixed on the impeller bottom plate, and the other end is fixed on the front disc. A through hole is provided at the center of the front disc.

[0015] By adopting the above technical solution, blades are arranged between the impeller bottom plate and the front disc, and the impeller bottom plate is fixed on the rotor cup, enabling the motor to drive the impeller bottom plate to drill holes, and then enabling the fan blade mechanism to rotate. When the fan blade mechanism rotates, air flows in and out through the through hole at the center of the front disc, enabling the fan to achieve the effect of blowing or exhausting air.

[0016] Optionally, a plurality of pins are arranged at both ends of the blade, and the pins on the blade respectively penetrate through the impeller bottom plate and the front disc.

[0017] By adopting the above technical solution, by inserting the pins into the card slots on the impeller bottom plate and the front disc, the impeller bottom plate, the night disc and the blade are mutually clamped, facilitating the assembly of the fan blade mechanism.

[0018] Optionally, the blade is bent to form a fan blade shape, a gap is formed in the middle of the blade by bending, and a plurality of air holes are formed on both the impeller bottom plate and the front disc, and the air holes are communicated with the gap in the middle of the blade.

[0019] By adopting the above technical solution, by arranging a gap between the blades and opening through holes on the impeller bottom plate and the front disc, the space in the middle of the blade can be communicated with the other side of the impeller bottom plate and the other side of the front disc. When the fan blade mechanism rotates driven by the motor, the flow velocity on the surface of the blade is relatively fast and the air pressure is relatively low. The air on the side of the impeller bottom plate away from the blade and the air on the side of the front disc away from the blade can enter the blade through the air holes, thereby increasing the air flow rate of the fan during operation for exhausting or blowing air.

[0020] Optionally, the inner diameter of the front disc is gradually changed, the diameter of one end of the front disc is larger, and the diameter of the other end is smaller. The side with the larger diameter of the pipe orifice on the front disc is connected to the blade. An open-ended pipe is connected to the chassis. The inner diameter of the open-ended pipe is gradually changed, the diameter of one end of the open-ended pipe is larger, and the diameter of the other end is smaller. The end with the larger diameter of the open-ended pipe is connected to the chassis. The open-ended pipe is sleeved outside the through hole of the chassis. The end with the smaller diameter of the open-ended pipe is inserted into the front disc, and a gap is formed at the connection between the open-ended pipe and the front disc.

[0021] By adopting the above technical solution, by setting the front disc and the open-ended pipe as pipes with gradually changing inner diameters, when the fan operates, air flows in the channel formed by the front disc and the open-ended pipe. The diameter of the connection between the front disc and the open-ended pipe is smaller, thereby increasing the flow velocity of the air flow and reducing the air pressure. When the pressure in the front disc and the open-ended pipe is relatively small, the air outside the front disc and the open-ended pipe can enter the front disc and the open-ended pipe through the gap between the front disc and the open-ended pipe, thereby increasing the air flow rate of the fan during operation.

[0022] In summary, the beneficial technical effects of this application are: 1. By setting a frame on the motor, the frame can fix the motor. When the base frame is fixed on the machine, the motor and the fan mechanism can be connected to the machine, which is convenient for installation. When the motor vibrates, the vibration is transmitted to the frame. The vibration generated by the motor is unlikely to cause a large shake of the frame, thereby improving the vibration resistance of the motor when it is working; 2. By setting an open pipe on the chassis, when the fan is working, the air flows in the pipe composed of the open pipe and the front disk. The pipe diameter at the connection between the open pipe and the front disk is small, and the air pressure during air flow is small, so that the outside air can enter the open pipe through the gap between the open pipe and the front disk, thereby increasing the flow rate when the fan is working; 3. By arranging a support frame between the columns, the support frame can play the role of supporting the columns, which can reduce the amplitude of the column shaking. When the motor is working and vibrating, the amplitude of the vibration of the motor and the top frame can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the structure of the top frame of an embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the structure of the base frame of an embodiment of the present application.

[0026] Figure 4 It is a schematic diagram of the structure of the motor of an embodiment of the present application.

[0027] Figure 5 It is a schematic structural diagram of the stator core of an embodiment of the present application.

[0028] Figure 6 It is a schematic diagram of the installation structure of the stator core in the rotor cup of an embodiment of the present application.

[0029] Figure 7 It is a schematic diagram of the installation structure of the shaft sleeve of an embodiment of the present application.

[0030] Figure 8 It is a schematic diagram of the structure of the blade of an embodiment of the present application.

[0031] Figure 9 This is a schematic diagram of the installation position of the blades in the embodiment of the present application. Figure 1 .

[0032] Figure 10 This is a schematic diagram of the installation position of the blades in the embodiment of the present application. Figure 2 .

[0033] Figure 11 It is a schematic diagram of the installation position of the open pipe in the embodiment of the present application.

[0034] Reference numerals: 1, frame; 11, top frame; 12, bottom frame; 13, column; 14, support frame; 2, motor; 21, stator core; 22, plastic-coated shaft; 23, permanent magnet; 24, rotor cup; 241, flange; 25, bushing; 3, fan blade mechanism; 31, impeller bottom plate; 32, front disc; 33, blade; 331, pin; 332, gap; 333, air hole; 4, open pipe. Detailed implementation mode

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] An embodiment of the present application discloses a structural bracket for installing a blower. Refer to Figure 1 , Figure 2 and Figure 3 , which includes a frame 1. A blower is arranged on the frame 1. The blower includes a motor 2 and a fan blade mechanism 3. The frame 1 includes a top frame 11, a bottom frame 12 and a plurality of columns 13. In the embodiment of the present application, both the top frame 11 and the bottom frame 12 are square plates. The number of columns 13 is set to four. The top frame 11 and the bottom frame 12 are arranged in parallel. The side length of the top frame 11 is smaller than that of the bottom frame 12. The columns 13 are arranged at the edges of the top frame 11. The columns 13 are perpendicular to the top frame 11. One end of the column 13 is fixed on the top frame 11, and the other end is fixed on the bottom frame 12. Through holes are formed in the middle of both the top frame 11 and the bottom frame 12. The motor 2 is installed in the through hole of the top frame 11. The motor 2 is fixed on the top frame 11. The fan blade mechanism 3 is connected to the motor 2. The edge of the fan blade mechanism 3 extends out between two adjacent columns 13. When the blower works, the blower sucks or blows air through the through hole in the middle of the bottom frame 12. The blower itself generates vibration. The top frame 11 plays a role in supporting the blower and can reduce the amplitude of vibration generated by the blower.

[0037] Refer to Figure 4 , the column 13 is formed by bending a metal plate. The metal plate is bent into an angle steel structure with two sides perpendicular to each other. A plurality of support frames 14 are arranged on the bottom frame 12. The support frames 14 are straight rod structures. The number of support frames 14 is set to four. The four support frames 14 are assembled into a square frame structure. The support frames 14 are fixed between two adjacent columns 13. Each end of the support frame 14 is connected to a column 13. The support frames 14 can further reduce the probability of the columns 13 shaking.

[0038] Refer to Figure 5 , Figure 6 and Figure 7, the motor 2 includes a stator core 21, a plastic-coated shaft 22, a plurality of permanent magnets 23, and a rotor cup 24. The stator core 21 is sleeved on the plastic-coated shaft 22, and the stator core 21 and the plastic-coated shaft 22 are fixedly connected to the top frame 11. The stator core 21 and the plastic-coated shaft 22 are located between the top frame 11 and the bottom frame 12. The rotor cup 24 is rotatably connected to the plastic-coated shaft 22. A through hole is provided at the bottom of the rotor cup 24, and the plastic-coated shaft 22 passes through the through hole of the rotor cup 24. A shaft sleeve 25 is provided at the end of the plastic-coated shaft 22, and the shaft sleeve 25 is used to hold the bottom of the rotor cup 24. The plurality of permanent magnets 23 are fixed on the inner wall of the rotor cup 24, and the rotor cup 24 is coaxially arranged with the plastic-coated shaft 22. When the motor 2 is powered on and starts, a magnetic field is generated between the stator core 21 and the permanent magnets 23, so that the rotor cup 24 can rotate by magnetic force. The fan blade mechanism 3 is fixed on the rotor cup 24, and the rotor cup 24 can rotate and drive the fan blade mechanism 3 to rotate, enabling the fan to perform air extraction or blowing work.

[0039] Referring to Figure 7 , Figure 8 and Figure 9 , the fan blade mechanism 3 includes an impeller bottom plate 31, a front disc 32, and a plurality of blades 33. The impeller bottom plate 31 and the front disc 32 are of disc structure, and the impeller bottom plate 31 is coaxially connected to the rotor cup 24. A flange 241 is fixedly connected to the outer wall of the rotor cup 24, and the impeller bottom plate 31 is coaxially connected to the flange 241. The plurality of blades 33 are equidistantly arranged at intervals along the circumference of the impeller bottom plate 31. The upper side of the blade 33 is fixed to the impeller bottom plate 31, and the lower side is fixed to the front disc 32. Both the upper and lower sides of the blade 33 are connected with a snap pin 331, and the snap pin 331 penetrates through the impeller bottom plate 31 and the front disc 32 respectively. The blade 33 is fixed between the impeller bottom plate 31 and the front disc 32 by snap connection. The front disc 32 is suspended between the top frame 11 and the bottom frame 12 through the blade 33.

[0040] Referring to Figure 8 , Figure 9 and Figure 10 , the blade 33 is formed by folding a plate, a gap 332 is provided in the middle of the blade 33, and a plurality of air holes 333 are provided on both the impeller bottom plate 31 and the front disc 32. The air holes 333 penetrate through the impeller bottom plate 31 or the front disc 32. When the blade 33 is installed between the impeller bottom plate 31 and the front disc 32, the air holes 333 communicate with the gap 332 in the middle of the blade 33.

[0041] Referring to Figure 10 and Figure 11, the front disk 32 is an open circular tube structure. One side of the front disk 32 has a larger tube orifice diameter, and the other side has a smaller tube orifice diameter. The side of the front disk 32 with the larger tube orifice diameter is connected to the blade 33. An open tube 4 is provided on the chassis 12. The open tube 4 is a circular tube structure. One side of the open tube 4 has a larger tube orifice diameter, and the other side has a smaller tube orifice diameter. The tube orifice diameter of the side with the smaller diameter of the open tube 4 is smaller than the tube orifice diameter of the thinner side of the front disk 32. The side with the larger diameter of the open tube 4 is connected to the chassis 12, and the side with the smaller diameter of the open tube 4 is inserted into the front disk 32. There is a gap between the open tube 4 and the front disk 32. When the motor 2 operates, the rotor cup 24 drives the fan blade mechanism 3 to rotate. At this time, the front disk 32 rotates relative to the open tube 4, and air flows through the gap between the front disk 32 and the open tube 4.

[0042] Referring to Figure 9 , Figure 10 and Figure 11 , when the blower performs the blowing operation, the gas flows through the front disk 32 and the open tube 4. The middle cross-section of the pipeline formed by the front disk 32 and the open tube 4 is smaller, and the cross-sections at both ends are larger. At this time, the gas can flow through the gap between the front disk 32 and the open tube 4. According to the Venturi effect, the flow velocity of the fluid increases when flowing through the connection between the front disk 32 and the open tube 4. According to Bernoulli's law, the increase in flow velocity is accompanied by a decrease in the fluid pressure. The outside air can enter the front disk 32 and the open tube 4 through the pressure difference, thereby increasing the blowing flow rate when the blower operates.

[0043] Referring to Figure 1 , when the motor 2 operates and generates vibrations, the motor 2 drives the fan blade mechanism 3 to vibrate. At this time, the front disk 32 vibrates relative to the open tube 4. Regardless of the moving direction of the front disk 32 relative to the open tube 4, there is always a gap between the front disk 32 and the open tube 4, thereby enabling the blower to maintain a stable operating state. When the motor 2 vibrates, the motor 2 and the fan blade mechanism 3 vibrate and release kinetic energy. The vibration causes the connection between the motor 2 and the frame 1 to become loose, which can reduce the probability of deformation and fatigue fracture on the motor 2 and the fan blade mechanism 3. The user can make the motor 2 and the fan blade mechanism 3 reusable and improve the service life by tightening the bolts or replacing the frame 1.

[0044] The implementation principle of the embodiment of the present application is: By providing the frame 1 on the motor 2 and the fan blade mechanism 3, the motor 2 is fixed on the chassis 12 through the top frame 11. The user can fix the chassis 12 on the machine, enabling the motor 2 to drive the fan blade mechanism 3 to rotate and operate, which is convenient for the user to install the blower. When the blower operates and generates vibrations, the front disk 32 moves relative to the open tube 4. At this time, the mechanical energy on the blower is released, which can reduce the probability of fatigue fracture on the blower.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A structural support for installing a fan, characterized in that: The invention comprises a frame (1), a motor (2) and a fan blade mechanism (3); the frame (1) comprises a top frame (11), a bottom frame (12) and a plurality of columns (13); the top frame (11) and the bottom frame (12) are arranged in parallel; one end of the column (13) is fixed to the top frame (11) and the other end is fixed to the bottom frame (12); a through hole is provided on the bottom frame (12); the motor (2) is mounted on the top frame (11); the fan blade mechanism (3) is connected to the motor (2); and the output shaft of the motor (2) is coaxially arranged with the through hole of the bottom frame (12).

2. A structural support for installing a fan according to claim 1, characterized in that: A plurality of support frames (14) are arranged on the base frame (12); the support frames (14) are rod-shaped structures; the support frames (14) are perpendicular to the upright posts (13); each end of the support frames (14) is connected to a upright post (13); and the plurality of support frames (14) form a frame structure.

3. A structural support for installing a fan according to claim 1, characterized in that: The motor (2) comprises a stator core (21), a plastic-coated shaft (22), a plurality of magnetic steels (23) and a rotor cup (24); the stator core (21) is sleeved on the plastic-coated shaft (22); the stator core (21) and the plastic-coated shaft (22) are fixed on a top frame (11) and are located between the top frame (11) and a bottom frame (12); the rotor cup (24) is rotatably connected to the plastic-coated shaft (22); the plurality of magnetic steels (23) are equidistantly spaced in the rotor cup (24); and the fan blade mechanism (3) is connected to the rotor cup (24).

4. A structural support for installing a fan according to claim 3, characterized in that: The rotor cup (24) is provided with a flange (241), and the fan blade mechanism (3) is detachably connected to the rotor cup (24) via the flange (241).

5. A structural support for installing a fan according to claim 4, characterized in that: The fan blade mechanism (3) comprises an impeller base plate (31), a front disk (32) and a plurality of blades (33); the impeller base plate (31) and the front disk (32) are disc structures; the impeller base plate (31) is coaxially connected to the flange (241); the impeller base plate (31) and the front disk (32) are arranged in parallel and coaxially; the blades (33) are arranged at equal intervals along the circumference of the impeller base plate (31); one end of the blade (33) is fixed to the impeller base plate (31) and the other end is fixed to the front disk (32); a through hole is provided at the center of the front disk (32).

6. A structural support for installing a fan according to claim 5, characterized in that: A plurality of latches (331) are provided on both ends of the blade (33), and the latches (331) on the blade (33) respectively penetrate the impeller bottom plate (31) and the front disc (32).

7. A structural support for installing a fan according to claim 6, characterized in that: The blade (33) is bent to form a fan blade shape, a gap (332) is formed in the middle of the blade (33) by bending, and a plurality of air holes (333) are provided on the impeller bottom plate (31) and the front disk (32), and the air holes (333) are communicated with the gap (332) in the middle of the blade (33).

8. A structural support for installing a fan according to claim 5, characterized in that: The front disk (32) has a gradually changing inner diameter, one end of the front disk (32) has a larger diameter at the tube opening, and the other end has a smaller diameter. The side of the front disk (32) with a larger diameter at the tube opening is connected to the blade (33). The base frame (12) is connected to an open tube (4). The open tube (4) has a gradually changing inner diameter, one end of the open tube (4) has a larger diameter, and the other end has a smaller diameter. The end of the open tube (4) with a larger diameter is connected to the base frame (12). The open tube (4) is sleeved outside the through hole of the base frame (12). The end of the open tube (4) with a smaller diameter is inserted into the front disk (32). A gap is formed at the connection between the open tube (4) and the front disk (32).

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