Fixed impeller with noise reduction function

Abstract

The fixed impeller with the noise reduction function comprises a mounting plate, blades are arranged on the mounting plate, an air guide barrel is arranged on the mounting plate, three sets of annularly-distributed flow guide blades are arranged in the air guide barrel, the three sets of flow guide blades are rotationally connected with the air guide barrel through a mounting shaft, a gear is connected to the mounting shaft in a sleeved mode, and the gear is connected with the air guide barrel in a sleeved mode. A mounting ring is arranged in the air guide barrel, inner teeth are arranged on the mounting ring, outer teeth are arranged on the mounting ring, the mounting ring is connected with the gear in a meshed mode through the inner teeth, and the horn-shaped air guide barrel is matched with the flow guide blades to achieve flow guide of cyclone generated in the high-speed rotation process of the movable impeller. And noise caused by vibration of the fixed impeller due to return air impact on the fixed impeller caused by sharp increase or decrease of the air outlet of the cyclone flow is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stator impellers, in particular to a stator impeller with noise reduction function. Background Art

[0002] The fan is usually composed of two parts, namely the motor part and the impeller part. The impeller part includes two main parts: the moving impeller and the fixed impeller. The moving impeller will produce a whirlwind when rotating at high speed; the fixed impeller, also known as the guide wheel, mainly functions to make the high-speed whirlwind generated by the moving impeller be released more smoothly. The rationality of the design of the fixed impeller air duct directly affects the efficiency and effect of the air guide.

[0003] The existing fixed impeller has poor air guiding effect when in use, and backflow air is easily formed at the air outlet. The large air volume impacts the fixed impeller, causing the fixed impeller to vibrate and produce noise. The irregular air outlet also makes the noise louder. The fixed impeller is easily damaged when subjected to the impact of large air volume for a long time, thereby reducing the service life of the motor. Utility Model Content

[0004] The purpose of the utility model is to provide a stator impeller with noise reduction function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixed impeller with noise reduction function, comprising a mounting plate, a blade is arranged on the mounting plate, an air guide tube is arranged on the mounting plate, three groups of annularly distributed guide blades are arranged in the air guide tube, the three groups of guide blades are rotatably connected to the air guide tube through a mounting shaft, a gear is sleeved on the mounting shaft, a mounting ring is arranged in the air guide tube, the mounting ring is provided with internal teeth, the mounting ring is provided with external teeth, and the mounting ring is meshed with the gear through the internal teeth.

[0006] As a further preferred embodiment of the present technical solution, a rack is provided in the air guide tube, and a cylinder is provided in the air guide tube.

[0007] As a further preferred embodiment of the present technical solution, the rack is meshedly connected with the mounting ring via external teeth, the rack is slidably connected with the air guide tube, and the rack is connected with the output end of the cylinder piston rod.

[0008] As a further preferred embodiment of the present technical solution, the blades are provided in a plurality of groups, the plurality of groups of blades are distributed in a ring shape, the blades are located between the mounting plate and the air guide tube, and the blades are fixedly connected to the mounting plate and the air guide tube respectively.

[0009] As a further preferred embodiment of the present technical solution, an impeller shaft is provided on the mounting plate, a fixed plate is provided on the impeller shaft, a shockproof plate is provided on the fixed plate, the shockproof plate is slidably connected to the fixed plate, and a plurality of groups of annularly distributed damping rods are provided between the shockproof plate and the fixed plate.

[0010] As a further preferred embodiment of the present technical solution, a spring is sleeved on the damping rod, two ends of the damping rod are respectively fixedly connected to the fixed plate and the shockproof plate, and two ends of the spring are respectively fixedly connected to the shockproof plate and the fixed plate.

[0011] The utility model provides a stator impeller with noise reduction function, which has the following beneficial effects:

[0012] (1) The utility model realizes the guidance of the cyclone generated by the high-speed rotation of the impeller by setting a trumpet-shaped air guide tube in conjunction with the guide vanes, so as to avoid the cyclone flow from forming return air and impacting the stator wheel due to the rapid increase or decrease of the air outlet, causing the stator wheel to vibrate and generate noise; the cyclone generated by the high-speed rotation of the impeller enters the trumpet-shaped air guide tube, and according to the Laval tube principle, when the medium passes through the pipe with a gradually increasing diameter, the mutual collision between molecules and between molecules and the pipe is reduced, and the flow rate is increased. Therefore, when the cyclone airflow passes through the trumpet-shaped air guide tube with a gradually increasing diameter, the airflow speed increases regularly, avoiding the wind speed from increasing or decreasing extremely quickly due to the irregular air duct, and when the airflow flows in the air guide tube, it is pushed out in a spiral shape under the action of the spiral guide vanes, and the pushed out airflow then flows out along the guide direction of the blades, the airflow is released smoothly, and the spiral push reduces the impact on the mounting plate and the blades, reducing the noise caused by the vibration of the mounting plate and the blades.

[0013] (2) The utility model provides a damping rod and a spring to provide vibration reduction protection for the stator impeller during its operation, thereby reducing the vibration between the stator impeller and the motor caused by the impact of the airflow, thereby reducing the noise generated and affecting the service life of the stator impeller and the motor; when the airflow impacts the mounting plate or the blades, a certain thrust is generated on the mounting plate or the blades, and the thrust of the mounting plate or the blades squeezes the damping rod and the spring, causing the spring to deform and absorb and disperse the vibration energy. The spring deformation will return to its original state, and under the action of the damping rod, the impact of the spring returning to its original state on the mounting plate or the blades is reduced, thereby achieving shock reduction protection for the stator impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic structural diagram of the air guide tube of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the guide vane of the utility model;

[0017] Figure 4 For the utility model Figure 3 -A magnified view of the structure;

[0018] Figure 5 It is a structural schematic diagram of the fixing plate of the utility model;

[0019] In the figure: 1. mounting plate; 2. blades; 3. air guide tube; 4. guide vane; 5. spring; 6. mounting shaft; 7. gear; 8. mounting ring; 9. inner teeth; 10. outer teeth; 11. rack; 12. cylinder; 13. impeller shaft; 14. fixing plate; 15. anti-vibration plate; 16. damping rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 2 , Figure 3 and Figure 4 As shown, in the present embodiment, a fixed impeller with noise reduction effect comprises a mounting plate 1, a blade 2 is arranged on the mounting plate 1, an air guide tube 3 is arranged on the mounting plate 1, three groups of guide blades 4 distributed in an annular manner are arranged in the air guide tube 3, the three groups of guide blades 4 are rotatably connected with the air guide tube 3 through a mounting shaft 6, a gear 7 is sleeved on the mounting shaft 6, a mounting ring 8 is arranged in the air guide tube 3, an inner tooth 9 is arranged on the mounting ring 8, an outer tooth 10 is arranged on the mounting ring 8, the mounting ring 8 is meshed with the gear 7 through the inner tooth 9, a rack 11 is arranged in the air guide tube 3, a cylinder 12 is arranged in the air guide tube 3, the rack 11 is meshed with the mounting ring 8 through the outer tooth 10, the rack 11 is slidably connected with the air guide tube 3, the rack 11 is connected with the output end of the piston rod of the cylinder 12, the number of blades 2 is provided in multiple groups, the multiple groups of blades 2 are distributed in an annular manner, the blades 2 are located between the mounting plate 1 and the air guide tube 3, and the blades 2 are fixedly connected with the mounting plate 1 and the air guide tube 3 respectively.

[0022] By setting a trumpet-shaped air guide tube 3 in cooperation with the guide vanes 4, the cyclone generated during the high-speed rotation of the impeller can be guided, thereby preventing the cyclone flow from forming return air that impacts the stator due to the sharp increase or decrease of the air outlet, causing the stator to vibrate and generate noise; the cyclone generated by the high-speed rotation of the impeller enters the trumpet-shaped air guide tube 3, and according to the Laval tube principle, when the medium passes through a pipe with a gradually increasing diameter, the mutual collisions between molecules and between molecules and the pipe are reduced, and the flow rate increases. Therefore, when the cyclone airflow passes through the trumpet-shaped air guide tube 3 with a gradually increasing diameter, the airflow velocity increases regularly, avoiding the wind speed from increasing or decreasing extremely quickly due to irregular air ducts, and when the airflow flows in the air guide tube 3, it is pushed out in a spiral shape under the action of the spiral guide vanes 4, and the pushed out airflow then flows out along the guide direction of the blades 2, the airflow is released smoothly, and the spiral push reduces the impact on the mounting plate 1 and the blades 2, thereby reducing the noise caused by the vibration of the mounting plate 1 and the blades 2.

[0023] like Figure 1 and Figure 5 As shown, an impeller shaft 13 is provided on the mounting plate 1, a fixed plate 14 is provided on the impeller shaft 13, a shockproof plate 15 is provided on the fixed plate 14, the shockproof plate 15 is slidably connected to the fixed plate 14, a plurality of groups of annularly distributed damping rods 16 are provided between the shockproof plate 15 and the fixed plate 14, a spring 5 is sleeved on the damping rod 16, two ends of the damping rod 16 are respectively fixedly connected to the fixed plate 14 and the shockproof plate 15, and two ends of the spring 5 are respectively fixedly connected to the shockproof plate 15 and the fixed plate 14.

[0024] By arranging the damping rod 16 and the spring 5, the stator impeller is protected from vibration during operation, thereby reducing the vibration between the stator impeller and the motor caused by the impact of the airflow, thereby reducing the noise generated and affecting the service life of the stator impeller and the motor; when the airflow impacts the mounting plate 1 or the blade 2, a certain thrust is generated on the mounting plate 1 or the blade 2, and the thrust of the mounting plate 1 or the blade 2 squeezes the damping rod 16 and the spring 5, and the spring 5 is deformed to absorb and disperse the vibration energy. The deformation of the spring 5 will return to its original state, and under the action of the damping rod 16, the impact of the spring 5 returning to its original state on the mounting plate 1 or the blade 2 is reduced, thereby achieving shock-absorbing protection for the stator impeller.

[0025] The utility model provides a fixed impeller with noise reduction effect, and the specific working principle is as follows: the cyclone generated by the high-speed rotation of the impeller enters the trumpet-shaped air guide tube 3. According to the Laval tube principle, when the medium passes through the pipe with a gradually increasing diameter, the mutual collision between molecules and between molecules and the pipe is reduced, and the flow rate is increased. Therefore, when the cyclone airflow passes through the trumpet-shaped air guide tube 3 with a gradually increasing diameter, the airflow speed increases regularly, avoiding the wind speed from increasing or decreasing at an extreme speed due to the irregular air duct, and when the airflow flows in the air guide tube 3, it is pushed out in a spiral shape under the action of the spiral guide blade 4, and the pushed out airflow is then pushed out in a spiral shape. The airflow flows out along the guide direction of the blade 2, and is released smoothly. The spiral push reduces the impact on the mounting plate 1 and the blade 2, and reduces the noise caused by the vibration of the mounting plate 1 and the blade 2. When the airflow impacts the mounting plate 1 or the blade 2, a certain thrust is generated on the mounting plate 1 or the blade 2. The thrust of the mounting plate 1 or the blade 2 squeezes the damping rod 16 and the spring 5, and the spring 5 is deformed to absorb and disperse the vibration energy. The deformation of the spring 5 will return to its original state. Under the action of the damping rod 16, the influence of the spring 5 returning to its original state on the mounting plate 1 or the blade 2 is reduced, thereby achieving shock absorption protection for the stator impeller.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stator with noise reduction function, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with blades (2), the mounting plate (1) is provided with an air guide tube (3), the air guide tube (3) is provided with three groups of annularly distributed guide blades (4), the three groups of guide blades (4) are rotatably connected to the air guide tube (3) via a mounting shaft (6), a gear (7) is sleeved on the mounting shaft (6), a mounting ring (8) is provided in the air guide tube (3), the mounting ring (8) is provided with internal teeth (9), the mounting ring (8) is provided with external teeth (10), and the mounting ring (8) is meshed with the gear (7) via the internal teeth (9).

2. The stator impeller with noise reduction function according to claim 1, characterized in that: A rack (11) is arranged inside the air guide cylinder (3), and a cylinder (12) is arranged inside the air guide cylinder (3).

3. The stator impeller with noise reduction function according to claim 2, characterized in that: The rack (11) is meshedly connected with the mounting ring (8) via external teeth (10), the rack (11) is slidably connected with the air guide cylinder (3), and the rack (11) is connected with the output end of the piston rod of the cylinder (12).

4. The stator impeller with noise reduction function according to claim 1, characterized in that: The blades (2) are arranged in a plurality of groups, and the plurality of groups of blades (2) are distributed in a ring shape. The blades (2) are located between the mounting plate (1) and the air guide tube (3), and the blades (2) are respectively fixedly connected to the mounting plate (1) and the air guide tube (3).

5. The stator with noise reduction function according to claim 1, characterized in that: An impeller shaft (13) is provided on the mounting plate (1), a fixing plate (14) is provided on the impeller shaft (13), a shockproof plate (15) is provided on the fixing plate (14), the shockproof plate (15) is slidably connected to the fixing plate (14), and a plurality of groups of annularly distributed damping rods (16) are provided between the shockproof plate (15) and the fixing plate (14).

6. The stator impeller with noise reduction function according to claim 5, characterized in that: The damping rod (16) is sleeved with a spring (5), and the two ends of the damping rod (16) are respectively fixedly connected to the fixing plate (14) and the shockproof plate (15), and the two ends of the spring (5) are respectively fixedly connected to the shockproof plate (15) and the fixing plate (14).

Images