Dust removal motor, dust removal module and air purification device

Abstract

The invention relates to the technical field of air purification, and discloses a dust removal motor, a dust removal module and an air purification device.The dust removal motor comprises an outer shell, an inner shell, a dust removal fan, a first silencing structure and a second silencing structure; the inner shell is connected to the interior of the outer shell; the dust removal fan is connected to the interior of the inner shell; the first silencing structure is arranged at one end of the inner shell and located at the position close to an air outlet of the dust removal fan. The second silencing structure is arranged between the inner shell and the outer shell, and the projection of the second silencing structure on the inner shell at least covers the first silencing structure. According to the dust removal motor provided by the invention, the noise is effectively reduced on the premise that the dust removal capability is not reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and particularly to a dust removal motor, a dust removal module and an air purification device. Background Art

[0002] An air purification device usually purifies air through a purification structure such as a filter screen. However, after long-term use, it is inevitable that dust and impurities will accumulate on the filter screen, affecting the air purification quality. Therefore, in some related technologies, a dust removal module is usually provided to remove dust from the filter screen. The dust removal module generally includes a dust removal motor and a suction pipe. The dust removal motor sucks away the dust and impurities attached to the surface of the filter screen through the suction pipe. In order to ensure sufficient suction force, the dust removal motor is generally set as a high-speed motor, and its rotation speed is much higher than that of the purification blades of the air purification device. Therefore, the noise of the dust removal module is higher than the noise generated by the purification blades of the air purification device, resulting in a significant increase in the overall noise of the air purification device, exceeding the noise limit value of the air purification device.

[0003] In related technologies, the noise is usually reduced by reducing the rotation speed of the dust removal motor to meet the noise limit value of the air purification device. However, when the rotation speed of the dust removal motor decreases, the dust removal ability will be reduced, affecting the dust removal effect on the filter screen. Summary of the Invention

[0004] In view of this, the present invention provides a dust removal motor, a dust removal module and an air purification device to solve the problem that when the noise is reduced by reducing the rotation speed of the dust removal motor, the dust removal ability will be reduced, affecting the dust removal effect of the dust removal motor on the filter screen.

[0005] In a first aspect, the present invention provides a dust removal motor, comprising:

[0006] An outer housing;

[0007] An inner housing, connected inside the outer housing;

[0008] A dust removal fan, connected inside the inner housing;

[0009] A first sound insulation structure, provided at one end of the inner housing and located near the air outlet of the dust removal fan;

[0010] A second sound insulation structure, provided between the inner housing and the outer housing, and the projection of the second sound insulation structure on the inner housing at least covers the first sound insulation structure.

[0011] Beneficial effects: Since the wind speed at the air outlet end of the dust removal fan of the dust removal motor is relatively high, high-frequency pneumatic noise with a relatively large amplitude will be generated. Therefore, a first sound absorption structure is provided at one end of the inner housing, and the first sound absorption structure is located close to the air outlet of the dust removal fan, so that the first sound absorption structure can absorb and reduce high-frequency pneumatic noise at the air outlet; and the projection of the second sound absorption structure on the inner housing at least covers the first sound absorption structure, so that the second sound absorption structure can not only absorb and reduce the pneumatic noise of the entire dust removal motor between the inner housing and the outer housing, but also further enhance the sound absorption effect of the first sound absorption structure at a position close to the air outlet; thus, the dust removal motor can effectively reduce noise on the premise of not reducing the dust removal ability and ensuring the dust removal effect on the filter screen, meeting the noise limit of devices such as air purification devices using the dust removal motor. At the same time, since the first sound absorption structure is provided on the inner housing and the second sound absorption structure is provided between the inner housing and the outer housing, the first sound absorption structure and the second sound absorption structure do not block the air outlet at the air outlet of the dust removal fan, ensuring the air outlet effect.

[0012] In an alternative embodiment, the first sound absorption structure includes a plurality of first noise reduction holes, which are spaced apart and distributed on one end of the inner housing and penetrate through the inner housing; the second sound absorption structure is sound-absorbing cotton.

[0013] Beneficial effects: The first noise reduction holes can reduce and absorb some of the high-frequency pneumatic noise with a relatively high wind speed propagating into the inner housing, and can transmit another part of the high-frequency pneumatic noise to the second sound absorption structure for reduction and absorption by the second sound absorption structure; and the setting of the first noise reduction holes does not require too much improvement, only need to drill holes at one end of the original inner housing; the sound-absorbing cotton has good sound absorption effect, and itself has a certain elasticity, which is convenient to be arranged between the inner housing and the outer housing, and can also form a buffering effect between the inner housing and the outer housing, and the cost of the sound-absorbing cotton is relatively low.

[0014] In an alternative embodiment, the dust removal motor further includes an elastic vibration isolation structure, and the dust removal fan is connected to the inner housing through the elastic vibration isolation structure.

[0015] Beneficial effects: By connecting the dust removal fan to the inner housing through the elastic vibration isolation structure, the vibration of the dust removal fan can be reduced from spreading to the outside of the dust removal motor, thereby achieving the effect of vibration reduction and noise reduction.

[0016] In a second aspect, the present invention further provides a dust removal module, including:

[0017] A base for rotatably connecting a filter screen;

[0018] The dust suction pipe assembly is connected to the base and is located at the side of the filter screen. The dust suction pipe assembly includes a dust suction port extending along the axial direction of the filter screen, the dust suction port faces the filter screen, and the dust suction pipe assembly further includes a dust outlet;

[0019] The dust collection box is connected to the base. The dust collection box includes a dust and gas inlet and an air outlet, and the dust and gas inlet is communicated with the dust outlet;

[0020] The above-mentioned dust removal motor is connected to the base, and the air inlet end of the dust removal motor is communicated with the air outlet.

[0021] Beneficial effects: When the dust removal module performs dust removal, the filter screen can be driven to rotate through the driving structure, so that each position of the filter screen will pass through the dust suction pipe assembly. At the same time, the dust removal motor is started. The air inlet end of the dust removal motor transmits the suction force to the dust suction port of the dust suction pipe assembly through the dust collection box, generating a large adsorption force at the dust suction port, sucking away the impurities and dust attached to the surface of the filter screen, and enabling the impurities and dust to enter the dust collection box through the dust outlet. The dust removal module has the noise reduction and vibration isolation effects of the above-mentioned dust removal motor.

[0022] In an optional implementation manner, the dust removal module further includes a first noise reduction component, which is connected to the base, is located on the air outlet path of the dust removal motor, and is arranged close to the air outlet end of the dust removal motor.

[0023] Beneficial effects: Since the wind speed at the air outlet end of the dust removal fan of the dust removal motor is relatively high, high-frequency pneumatic noise with a large amplitude will be generated. For the entire dust removal motor, the wind speed at the air outlet end is also relatively high, and it is easy to generate high-frequency pneumatic noise with a large amplitude. Therefore, a first noise reduction component is arranged at a position close to the air outlet end on the air outlet path to absorb and reduce the pneumatic noise at the air outlet end of the dust removal motor, so that the dust removal motor can effectively reduce noise on the premise of not reducing the dust removal ability and ensuring the dust removal effect on the filter screen, and meet the noise limit of devices such as air purification devices using the dust removal motor.

[0024] In an optional implementation manner, the first noise reduction component includes:

[0025] A noise reduction plate, which is connected to the base and is arranged at an interval from the air outlet end of the dust removal motor. A number of second noise reduction holes are distributed at intervals on the noise reduction plate;

[0026] A first sound absorption member, which is connected to the base or the noise reduction plate, and the first sound absorption member is located downstream of the noise reduction plate along the air outlet direction of the dust removal motor.

[0027] Beneficial effects: The second noise reduction holes on the noise reduction plate can reduce and absorb part of the pneumatic noise in the air outlet path, and direct the other part of the pneumatic noise to the first sound absorption member for reduction and absorption, effectively reducing noise. And since the first noise reduction assembly is arranged at the air outlet end of the dust removal motor, it does not affect the dust removal effect of the dust removal motor.

[0028] In an alternative embodiment, the dust removal module further includes:

[0029] A first air duct, one end of which is communicated with the air outlet, and the other end is communicated with the air inlet end;

[0030] A second sound absorption member, arranged between the air inlet end and the first air duct.

[0031] Beneficial effects: By arranging the second sound absorption member at the air inlet end, the second sound absorption member can wrap the connection between the air inlet end and the first air duct, reducing the leakage and radiation of the dust suction noise through the connection between the air inlet end and the first air duct.

[0032] In an alternative embodiment, the dust removal module further includes a first air duct, one end of the first air duct is communicated with the air outlet, and the other end is communicated with the air inlet end; the first air duct is a flexible pipeline.

[0033] Beneficial effects: The first air duct realizes the connection between the dust collection box and the dust removal motor. The first air duct is a flexible pipeline, which can reduce the radiation amount of noise and vibration during the propagation process.

[0034] In an alternative embodiment, the dust removal module further includes a second air duct, one end of the second air duct is communicated with the dust and air inlet, and the other end is communicated with the dust outlet, and the second air duct is a flexible pipeline.

[0035] Beneficial effects: The second air duct realizes the connection between the dust suction pipe assembly and the dust collection box. The second air duct is a flexible pipeline, which can reduce the radiation amount of noise and vibration during the propagation process.

[0036] In an alternative embodiment, the dust removal module further includes a vibration damping component, which is connected between the dust removal motor and the base.

[0037] Beneficial effects: The vibration damping component is connected between the dust removal motor and the base, reducing the vibration transmission of the dust removal motor to the base, thereby reducing the vibration noise.

[0038] In an alternative embodiment, the vibration damping component includes:

[0039] A first mounting pillar, protruding from the outer periphery of the dust removal motor;

[0040] A second mounting pillar, protruding on the base;

[0041] The damping spring is connected to the first mounting pillar and the second mounting pillar at both ends respectively.

[0042] Advantageous effects: The arrangement of the first mounting pillar and the second mounting pillar facilitates the connection of the damping spring. Furthermore, the vibration transmission of the dust removal motor to the base is reduced through the damping spring, thereby reducing the vibration noise.

[0043] In an alternative embodiment, the dust removal module further includes a second noise reduction component, which is arranged on the dust suction pipe assembly and is disposed opposite to the dust suction port.

[0044] Advantageous effects: By arranging the second noise reduction component on the dust suction pipe assembly and making the second noise reduction component disposed opposite to the dust suction port, the high-frequency pneumatic noise with a high wind speed can be absorbed, and the noise reduction effect is good.

[0045] In an alternative embodiment, the dust suction pipe assembly includes:

[0046] An inner pipe, provided with the dust suction port and the dust outlet, and the dust outlet is arranged at one end of the inner pipe along the axial direction of the inner pipe;

[0047] An outer pipe, sleeved outside the inner pipe;

[0048] A suction head assembly, connected to the outer pipe and communicating the dust suction port with the filter screen;

[0049] The second noise reduction component includes a third sound absorption member and a plurality of third noise reduction holes. The plurality of third noise reduction holes are spaced apart on the inner pipe and are disposed opposite to the dust suction port; the third sound absorption member is arranged between the inner pipe and the outer pipe, and the projection of the third sound absorption member on the inner pipe at least covers the third noise reduction holes.

[0050] In a third aspect, the present invention further provides an air purification device, including a filter screen and the above-mentioned dust removal module. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0052] Figure 1 It is a cross-sectional view of a dust removal motor according to an embodiment of the present invention;

[0053] Figure 2An installation explosion diagram of a dust removal motor according to an embodiment of the present invention;

[0054] Figure 3 A schematic diagram of a perspective of a dust removal motor according to an embodiment of the present invention;

[0055] Figure 4 A schematic diagram of another perspective of a dust removal motor according to an embodiment of the present invention;

[0056] Figure 5 A schematic diagram of yet another perspective of a dust removal motor according to an embodiment of the present invention;

[0057] Figure 6 A partial cross-sectional view of a dust removal motor according to an embodiment of the present invention;

[0058] Figure 7 A schematic diagram of a dust removal fan of a dust removal motor according to an embodiment of the present invention;

[0059] Figure 8 A schematic diagram of an inner housing of a dust removal motor according to an embodiment of the present invention;

[0060] Figure 9 A schematic diagram of a perspective of a dust removal module according to an embodiment of the present invention;

[0061] Figure 10 A schematic diagram of another perspective of a dust removal module according to an embodiment of the present invention;

[0062] Figure 11 A schematic diagram of yet another perspective of a dust removal module according to an embodiment of the present invention;

[0063] Figure 12 For Figure 11 Cross-sectional view taken along line A-A in

[0064] Figure 13 For Figure 11 Cross-sectional view taken along line B-B in

[0065] Figure 14 A schematic diagram of a dust suction pipe assembly of a dust removal module according to an embodiment of the present invention;

[0066] Figure 15 Installation explosion of a dust suction pipe assembly of a dust removal module according to an embodiment of the present invention;

[0067] Figure 16 A schematic diagram of an inner pipe of a dust suction pipe assembly of a dust removal module according to an embodiment of the present invention;

[0068] Figure 17 A partial schematic diagram of an air purification device according to an embodiment of the present invention;

[0069] Figure 18 Schematic diagram of the sound absorption coefficient of different orifice plates Figure 1 ;

[0070] Figure 19 Schematic diagram of the sound absorption coefficient of different orifice plates Figure 2 。

[0071] Description of the reference numerals in the drawings:

[0072] 10. Dust removal motor; 1. Outer housing; 2. Inner housing; 21. Transition section; 3. Dust removal fan; 31. Air outlet; 32. Air inlet; 4. First sound insulation structure; 5. Second sound insulation structure; 6. Elastic vibration isolation structure; 61. First vibration isolation member; 62. Second vibration isolation member;

[0073] 20. Base;

[0074] 30. Dust suction pipe assembly; 301. Inner pipe; 3011. Dust suction port; 302. Outer pipe; 303. Suction head assembly;

[0075] 40. Dust collection box;

[0076] 50. First noise reduction assembly; 501. Noise reduction plate; 502. First sound absorption member;

[0077] 60. First air duct;

[0078] 70. Second sound absorption member;

[0079] 80. Second air duct;

[0080] 90. Vibration damping assembly; 901. First mounting pillar; 902. Second mounting pillar; 903. Vibration damping spring;

[0081] 110. Second noise reduction assembly; 1101. Third sound absorption member; 1102. Third noise reduction hole;

[0082] 100. Dust removal module; 200. Filter screen. Specific embodiments

[0083] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

[0084] The following describes the embodiments of the present invention in conjunction with Figures 1 to 19 , describing the embodiments of the present invention.

[0085] According to an embodiment of the present invention, on the one hand, a dust removal motor 10 is provided, which includes an outer housing 1, an inner housing 2, a dust removal fan 3, a first sound absorption structure 4 and a second sound absorption structure 5; the inner housing 2 is connected inside the outer housing 1; the dust removal fan 3 is connected inside the inner housing 2; the first sound absorption structure 4 is arranged at one end of the inner housing 2 and is located at a position close to the air outlet 31 of the dust removal fan 3; the second sound absorption structure 5 is arranged between the inner housing 2 and the outer housing 1, and the projection of the second sound absorption structure 5 on the inner housing 2 at least covers the first sound absorption structure 4.

[0086] Since the wind speed at the air outlet end of the dust removal fan 3 of the dust removal motor 10 is relatively high, high-frequency pneumatic noise with a relatively large amplitude will be generated. Therefore, a first sound absorption structure 4 is arranged at one end of the inner housing 2, and the first sound absorption structure 4 is close to the air outlet 31 of the dust removal fan 3, so that the first sound absorption structure 4 can absorb and reduce high-frequency pneumatic noise at the air outlet 31; and the projection of the second sound absorption structure 5 on the inner housing 2 at least covers the first sound absorption structure 4, so that the second sound absorption structure 5 can not only absorb and reduce the pneumatic noise of the entire dust removal motor 10 between the inner housing 2 and the outer housing 1, but also further enhance the sound absorption effect of the first sound absorption structure 4 at a position close to the air outlet 31; thus, the dust removal motor 10 can effectively reduce noise on the premise of not reducing the dust removal ability and ensuring the dust removal effect on the filter screen 200, and meet the noise limit of devices such as air purification devices using the dust removal motor 10. At the same time, since the first sound absorption structure 4 is arranged on the inner housing 2 and the second sound absorption structure 5 is arranged between the inner housing 2 and the outer housing 1, the first sound absorption structure 4 and the second sound absorption structure 5 do not block the air outlet at the air outlet 31 of the dust removal fan 3, ensuring the air outlet effect.

[0087] In a specific embodiment, the second sound absorption structure 5 can extend along the axial direction of the inner housing 2 to both ends of the inner housing 2 to ensure the sound absorption and noise reduction effect in the axial direction between the inner housing 2 and the outer housing 1. Alternatively, the second sound absorption structure 5 can also be arranged only at one end of the inner housing 2. The second sound absorption structure 5 can be a cylindrical structure.

[0088] In this embodiment, the end of the inner housing 2 provided with the first sound absorption structure 4 is located downstream, that is, at the rear end, in the air outlet direction of the entire dust suction motor. The other end of the inner housing 2 is located upstream, that is, at the front end, in the air outlet direction of the entire dust suction motor.

[0089] In one embodiment, the first sound absorption structure 4 includes a plurality of first noise reduction holes, which are spaced apart and distributed on one end of the inner housing 2 and penetrate through the inner housing 2; the second sound absorption structure 5 is sound-absorbing cotton.

[0090] The first noise reduction hole can reduce and absorb some of the high-frequency pneumatic noise with a relatively high wind speed transmitted into the inner housing 2, and transfer the other part of the high-frequency pneumatic noise to the second sound absorption structure 5 for reduction and absorption; moreover, the setting of the first noise reduction hole does not require much improvement, and only needs to drill holes at one end of the original inner housing 2; the sound absorption cotton has good sound absorption effect and certain elasticity itself, which is convenient to be arranged between the inner housing 2 and the outer housing 1, and can also form a buffering effect between the inner housing 2 and the outer housing 1, and the cost of the sound absorption cotton is relatively low.

[0091] In a specific embodiment, there are at least two groups of the first noise reduction holes arranged along the axial direction of the inner housing 2, and at least two of each group are arranged at intervals along the circumferential direction of the inner housing 2.

[0092] In a specific embodiment, the air inlet 32 of the dust removal fan 3 has axial air intake, the air outlet 31 of the dust removal fan 3 has radial air outlet, the inner housing 2 is provided with a protruding transition section 21, and the transition section 21 is correspondingly arranged with the air outlet 31 of the dust removal fan 3. The transition section 21 reserves enough space for the air outlet of the dust removal fan 3. At the same time, the transition section 21 can also change the originally radially outgoing air flow into an axially outgoing air flow. One end of the inner housing 2 where the first sound absorption structure 4 is provided is connected to the transition section 21.

[0093] Furthermore, the second sound absorption structure 5 between the outer housing 1 and the inner housing 2 can be sound absorption cotton with a thickness between 5 mm and 20 mm, and the sound absorption cotton material can be polyurethane or polyester fiber or Oppsailo, etc.

[0094] In an embodiment, the dust removal motor 10 further includes an elastic vibration isolation structure 6, and the dust removal fan 3 is connected to the inner housing 2 through the elastic vibration isolation structure 6.

[0095] Connecting the dust removal fan 3 and the inner housing 2 through the elastic vibration isolation structure 6 can reduce the transmission of the vibration of the dust removal fan 3 to the outside of the dust removal motor 10, and thus achieve the effect of vibration reduction and noise reduction.

[0096] Specifically, the elastic vibration isolation structure 6 can be made of rubber material.

[0097] In a further embodiment, the elastic vibration isolation structure 6 includes a first vibration isolation member 61 located at one end of the inner housing 2 away from the first sound absorption structure 4. One end of the air inlet 32 of the dust removal fan 3 is connected to the inner housing 2 through the first vibration isolation member 61. The first vibration isolation member 61 is in a ring structure and sleeved on the outer periphery of the dust removal fan 3. The elastic vibration isolation structure 6 further includes a second vibration isolation member 62 located at one end of the inner housing 2 close to the first sound absorption structure 4. One end of the air outlet 31 of the dust removal fan 3 is connected to the inner housing 2 through the second vibration isolation member 62. Since the air inlet 32 of the dust removal fan 3 has axial air intake and the air outlet 31 of the dust removal fan 3 has radial air outlet, the air outlet 31 of the dust removal fan 3 is arranged on the outer peripheral wall of the dust removal fan 3. The second vibration isolation member 62 includes vibration isolation blocks and connecting ribs. The vibration isolation blocks are connected to the end of the dust removal fan 3 and do not block the air outlet 31. One end of the connecting rib is connected to the vibration isolation block and the other end is connected to the inner housing 2. There may be at least two connecting ribs, which are distributed at intervals along the circumferential direction of the inner housing 2.

[0098] According to an embodiment of the present invention, on the other hand, a dust removal module 100 is further provided, which includes a base 20, a dust suction pipe assembly 30, a dust collection box 40 and a dust removal motor 10; the base 20 is used for rotatably connecting a filter screen 200; the dust suction pipe assembly 30 is connected to the base 20 and located at the side of the filter screen 200. The dust suction pipe assembly 30 includes a dust suction port 3011 extending along the axial direction of the filter screen 200, and the dust suction port 3011 faces the filter screen 200. The dust suction pipe assembly 30 further includes a dust outlet; the dust collection box 40 is connected to the base 20, and the dust collection box 40 includes a dust and gas inlet and an air outlet, and the dust and gas inlet is communicated with the dust outlet; the above-mentioned dust removal motor 10 is connected to the base 20, and the air inlet end of the dust removal motor 10 is communicated with the air outlet.

[0099] When the dust removal module 100 performs dust removal, the filter screen 200 can be driven to rotate through a driving structure, so that each position of the filter screen 200 will pass through the dust suction pipe assembly 30. At the same time, the dust removal motor 10 is started. The air inlet end of the dust removal motor 10 transmits the suction force to the dust suction port 3011 of the dust suction pipe assembly 30 through the dust collection box 40, generating a large adsorption force at the dust suction port 3011 to suck away the impurities and dust attached to the surface of the filter screen 200, and the impurities and dust enter the dust collection box 40 through the dust outlet. The dust removal module 100 has the noise reduction and vibration isolation effects of the above-mentioned dust removal motor 10.

[0100] In a specific embodiment, the dust removal module 100 further includes a driving structure which can drive the motor. The power output end of the driving structure is connected to the filter screen 200 and is used to drive the filter screen 200 to rotate. In one embodiment, when the filter screen 200 performs filtration, air enters from the outer periphery to the inner periphery of the filter screen 200, so that most of the impurities and dust accumulate on the outer periphery of the filter screen 200. The dust suction pipe assembly 30 of this embodiment is arranged outside the filter screen 200 and has a small interval from the filter screen 200, ensuring that the filter screen 200 can rotate while having a good dust suction effect on the impurities and dust outside the filter screen 200.

[0101] In one embodiment, the dust removal module 100 further includes a first noise reduction component 50, which is connected to the base 20, located on the air outlet path of the dust removal motor 10, and is arranged close to the air outlet end of the dust removal motor 10.

[0102] Since the wind speed at the air outlet end of the dust removal fan 3 of the dust removal motor 10 is relatively high, high-frequency pneumatic noise with a large amplitude will be generated. For the entire dust removal motor 10, the wind speed at the air outlet end is also relatively high, and it is easy to generate high-frequency pneumatic noise with a large amplitude. Therefore, the first noise reduction component 50 is arranged at a position close to the air outlet end on the air outlet path to absorb and reduce the pneumatic noise at the air outlet end of the dust removal motor 10, so that the dust removal motor 10 can effectively reduce the noise on the premise of not reducing the dust removal ability and ensuring the dust removal effect on the filter screen 200, and meet the noise limit of devices such as air purification devices using the dust removal motor 10.

[0103] In one embodiment, the first noise reduction component 50 includes a noise reduction plate 501 and a first sound absorption member 502. The noise reduction plate 501 is connected to the base 20 and is arranged at an interval from the air outlet end of the dust removal motor 10. A number of second noise reduction holes are distributed at intervals on the noise reduction plate 501; the first sound absorption member 502 is connected to the base 20 or the noise reduction plate 501, and the first sound absorption member 502 is located downstream of the noise reduction plate 501 along the air outlet direction of the dust removal motor 10.

[0104] The second noise reduction holes on the noise reduction plate 501 can reduce and absorb part of the pneumatic noise on the air outlet path, and can direct another part of the pneumatic noise to the first sound absorption member 502 for reduction and absorption, effectively reducing the noise. And because the first noise reduction component 50 is arranged at the air outlet end of the dust removal motor 10, it does not affect the dust removal effect of the dust removal motor 10.

[0105] In a specific embodiment, at least two groups of second noise reduction holes are provided at intervals along the length direction of the noise reduction plate 501, and at least two second noise reduction holes are provided at intervals along the width direction of each group. The first sound-absorbing member 502 is made of sound-absorbing cotton and has a shape matching that of the noise reduction plate 501. With such a setting, the first noise reduction assembly 50 can have a good noise reduction effect while occupying less space. The sound-absorbing cotton material can be polyurethane, polyester fiber, Oppsello, etc.

[0106] In one embodiment, the dust removal module 100 further includes a first air duct 60 and a second sound-absorbing member 70; one end of the first air duct 60 is communicated with the air outlet, and the other end is communicated with the air inlet end; the second sound-absorbing member 70 is arranged between the air inlet end and the first air duct 60.

[0107] By arranging the second sound-absorbing member 70 at the air inlet end, the connection part between the air inlet end and the first air duct 60 can be wrapped by the second sound-absorbing member 70, reducing the leakage and radiation of the dust suction noise through the connection part between the air inlet end and the first air duct 60.

[0108] In a specific embodiment, the second sound-absorbing member 70 is made of sound-absorbing cotton. The sound-absorbing cotton material can be polyurethane, polyester fiber, Oppsello, etc. In a preferred embodiment, the second sound-absorbing member 70 is an annular structure with a shape matching both the air inlet end of the inner housing 2 and the connection end of the first air duct 60. The second sound-absorbing member 70 is arranged inside the inner housing 2 and sleeved outside the first air duct 60.

[0109] In one embodiment, the dust removal module 100 further includes a first air duct 60, one end of the first air duct 60 is communicated with the air outlet, and the other end is communicated with the air inlet end; the first air duct 60 is a flexible pipeline.

[0110] The first air duct 60 realizes the connection between the dust collection box 40 and the dust removal motor 10. The first air duct 60 is a flexible pipeline, which can reduce the radiation amount of noise and vibration during the propagation process.

[0111] In a specific embodiment, the first air duct 60 is a flexible pipeline made of rubber with high damping.

[0112] In one embodiment, the dust removal module 100 further includes a second air duct 80, one end of the second air duct 80 is communicated with the dust and gas inlet, and the other end is communicated with the dust outlet, and the second air duct 80 is a flexible pipeline.

[0113] The second air duct 80 realizes the connection between the dust suction pipe assembly 30 and the dust collection box 40. The second air duct 80 is a flexible pipeline, which can reduce the radiation amount of noise and vibration during the propagation process.

[0114] In a specific embodiment, the second air duct 80 is a flexible pipeline made of high-damping rubber.

[0115] In a specific embodiment, the dust removal motor 10 is started, a negative pressure is generated at the air inlet end of the dust removal motor 10, and the negative pressure is sequentially generated at the dust suction port 3011 through the first air duct 60, the dust collection box 40, the second air duct 80 and the dust suction pipe assembly 30. The impurities and dust attached to the filter screen 200 are sucked away by the negative pressure air flow generated at the dust suction port 3011. The impurities and dust sequentially enter the dust collection box 40 through the dust outlet of the dust suction pipe assembly 30, the second air duct 80 and the dust and air inlet. Dust-air separation is carried out in the dust collection box 40. The impurities and dust are collected in the dust collection box 40, and the clean air enters the dust removal motor 10 from the air outlet of the dust collection box 40 and the first air duct 60 at the air inlet end and is discharged from the air outlet end of the dust removal motor 10.

[0116] In one embodiment, the dust removal module 100 further includes a vibration damping assembly 90 connected between the dust removal motor 10 and the base 20.

[0117] The vibration damping assembly 90 is connected between the dust removal motor 10 and the base 20, reducing the vibration transmission of the dust removal motor 10 to the base 20, thereby reducing the vibration noise.

[0118] In one embodiment, the vibration damping assembly 90 includes a first mounting pillar 901, a second mounting pillar 902 and a vibration damping spring 903. The first mounting pillar 901 protrudes from the outer periphery of the dust removal motor 10; the second mounting pillar 902 protrudes on the base 20; both ends of the vibration damping spring 903 are respectively connected to the first mounting pillar 901 and the second mounting pillar 902.

[0119] The settings of the first mounting pillar 901 and the second mounting pillar 902 facilitate the connection of the vibration damping spring 903, and further reduce the vibration transmission of the dust removal motor 10 to the base 20 through the vibration damping spring 903, thereby reducing the vibration noise.

[0120] In a further embodiment, there are at least two first mounting pillars 901, which are spaced along the air outlet direction of the dust removal motor 10. The number and position of the second mounting pillars 902 match the number and position of the first mounting pillars 901, and the number and position of the vibration damping springs 903 match the number and position of the first mounting pillars 901, which can balance the vibration along the air outlet direction of the dust removal motor 10 and ensure the force uniformity of the dust removal motor 10. In a preferred embodiment, there are two first mounting pillars 901, which are respectively arranged at the air inlet end and the air outlet end of the dust removal motor 10.

[0121] In a specific embodiment, the base 20 includes a base and a cover plate. A receiving cavity is formed on the base, and the cover plate is connected to the top of the base to hermetically cover the receiving cavity. The dust removal motor 10, the dust collection box 40, the first air duct 60, and the second air duct 80 are all arranged on the base and located within the receiving cavity, which not only ensures the integrity and aesthetics of the base 20 but also protects the above-mentioned structures. A first mounting pillar 901 is provided on the top of the dust removal motor 10, and a second mounting pillar 902 is provided on the cover plate. The dust suction pipe assembly 30 is mounted on the cover plate and is connected to the second air duct 80 through an avoidance hole on the cover plate.

[0122] Alternatively, in other embodiments, the dust removal motor 10 is mounted on the cover plate. A first mounting pillar 901 is provided at the bottom of the dust removal motor 10, and a second mounting pillar 902 is correspondingly provided on the base.

[0123] In one embodiment, the dust removal module 100 further includes a second noise reduction component 110, which is arranged on the dust suction pipe assembly 30 and is disposed opposite to the dust suction port 3011.

[0124] By arranging the second noise reduction component 110 on the dust suction pipe assembly 30 and making the second noise reduction component 110 disposed opposite to the dust suction port 3011, high-frequency pneumatic noise with a high wind speed can be absorbed, and the noise reduction effect is good.

[0125] In one embodiment, the dust suction pipe assembly 30 includes an inner pipe 301, an outer pipe 302, and a suction head assembly 303. The inner pipe 301 is provided with the dust suction port 3011 and the dust outlet, and the dust outlet is arranged at one end of the inner pipe 301 along the axial direction of the inner pipe 301. The outer pipe 302 is sleeved outside the inner pipe 301. The suction head assembly 303 is connected to the outer pipe 302 and communicates the dust suction port 3011 with the filter screen 200. The second noise reduction component 110 includes a third sound absorption member 1101 and a plurality of third noise reduction holes 1102. The plurality of third noise reduction holes 1102 are spaced apart on the inner pipe 301 and are disposed opposite to the dust suction port 3011. The third sound absorption member 1101 is arranged between the inner pipe 301 and the outer pipe 302, and the projection of the third sound absorption member 1101 on the inner pipe 301 at least covers the third noise reduction holes 1102.

[0126] The third noise reduction holes 1102 are arranged at positions opposite to the dust suction port 3011, which can absorb and reduce some of the high-frequency pneumatic noise with a high wind speed entering the inner pipe 301, and can transmit another part of the high-frequency pneumatic noise to the third sound absorption member 1101 for reduction and absorption, effectively reducing the noise. And the setting of the third noise reduction holes 1102 does not require too much improvement to the dust suction pipe assembly 30, and only needs to perform a punching operation at the position on the original inner pipe 301 opposite to the dust suction port 3011.

[0127] In a specific embodiment, at least two groups of third noise reduction holes 1102 are provided on the inner tube 301 at intervals along its circumferential direction, and at least two third noise reduction holes 1102 are provided at intervals along the axial direction of each group along the inner tube 301. The third sound absorption member 1101 is made of sound-absorbing cotton, and its shape matches the shapes of the inner tube 301 and the appearance, and it can occupy less space while having a good noise reduction effect. The sound-absorbing cotton material can be polyurethane or polyester fiber or Opusello, etc. The dust suction ports 3011 on the inner tube 301 may include at least two arranged at intervals in the axial direction in sequence, preferably four, and each dust suction port 3011 is a strip-shaped port extending in the axial direction.

[0128] The high-frequency pneumatic noise mentioned in this embodiment mainly has a frequency range between 1000 Hz and 1300 Hz. For example, Figure 18 and 19 As shown, when the thickness of the plate-shell material with noise reduction holes is 2 mm and the thickness of the air back cavity is 10 mm, the maximum sound absorption coefficients of the orifice plates with a hole pitch of 13 mm and a hole diameter of 2 mm and the orifice plates with hole pitches of 26 and 4.5 mm are both between 1000 Hz and 1300 Hz. Therefore, the parameter ranges of the second noise reduction holes on the noise reduction plate 501 at the air outlet end of the dust suction motor, the first noise reduction holes on the inner housing 2 of the dust suction motor, and the third noise reduction holes 1102 on the inner tube 301 of the dust suction pipe assembly 30 mentioned in this embodiment are recommended as follows: the hole pitch is 13 - 26 mm, and the hole diameter is 2 - 4.5 mm.

[0129] According to an embodiment of the present invention, on the other hand, an air purification device is further provided, which includes a filter screen 200 and the above-mentioned dust removal module 100.

[0130] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A dust removal motor, characterized in that, Comprising: An outer housing (1); An inner housing (2), connected inside the outer housing (1); A dust removal fan (3), connected inside the inner housing (2); A first sound insulation structure (4), provided at one end of the inner housing (2) and located at a position close to the air outlet (31) of the dust removal fan (3); A second sound insulation structure (5), provided between the inner housing (2) and the outer housing (1), and the projection of the second sound insulation structure (5) on the inner housing (2) at least covers the first sound insulation structure (4).

2. The dust removal motor according to claim 1, wherein, The first sound insulation structure (4) includes a plurality of first noise reduction holes, which are spaced apart and distributed on one end of the inner housing (2) and penetrate through the inner housing (2); the second sound insulation structure (5) is sound-absorbing cotton.

3. The dust removal motor according to claim 1 or 2, characterized in that, It further includes an elastic vibration isolation structure (6), and the dust removal fan (3) is connected to the inner housing (2) through the elastic vibration isolation structure (6).

4. A dust removal module, characterized in that, Comprising: A base (20), used for rotatably connecting a filter screen (200); A dust suction pipe assembly (30), connected to the base (20) and located at the side of the filter screen (200). The dust suction pipe assembly (30) includes a dust suction port (3011) extending along the axial direction of the filter screen (200), the dust suction port (3011) faces the filter screen (200), and the dust suction pipe assembly (30) further includes a dust outlet; A dust collection box (40), connected to the base (20). The dust collection box (40) includes a dust and gas inlet and an air outlet, and the dust and gas inlet is communicated with the dust outlet; The dust removal motor (10) according to any one of claims 1 to 3, connected to the base (20), and the air inlet end of the dust removal motor (10) is communicated with the air outlet.

5. The dust removal module according to claim 4, wherein It further includes a first noise reduction assembly (50), connected to the base (20), located on the air outlet path of the dust removal motor (10) and provided close to the air outlet end of the dust removal motor (10).

6. The dust removal module according to claim 5, characterized in that, The first noise reduction assembly (50) includes: A noise reduction plate (501), connected to the base (20) and spaced from the air outlet end of the dust removal motor (10), and a plurality of second noise reduction holes are spaced apart and distributed on the noise reduction plate (501); A first sound absorption member (502), connected to the base (20) or the noise reduction plate (501), and the first sound absorption member (502) is located downstream of the noise reduction plate (501) along the air outlet direction of the dust removal motor (10).

7. The dust removal module according to claim 4, characterized in that, It further includes: A first air duct (60), one end of which is communicated with the air outlet and the other end is communicated with the air inlet end; A second sound absorption member (70), provided between the air inlet end and the first air duct (60).

8. The dust removal module according to claim 4, characterized in that, It further includes a first air duct (60), one end of the first air duct (60) is communicated with the air outlet and the other end is communicated with the air inlet end; the first air duct (60) is a flexible pipeline.

9. The dust removal module according to claim 4, wherein It further includes a second air duct (80), one end of the second air duct (80) is communicated with the dust and gas inlet and the other end is communicated with the dust outlet, and the second air duct (80) is a flexible pipeline.

10. The dust removal module according to claim 4, wherein, It further includes a shock absorption component (90) connected between the dust removal motor (10) and the base (20).

11. The dust removal module according to claim 10, characterized in that, The shock absorption component (90) includes: A first mounting pillar (901) protruding from the outer periphery of the dust removal motor (10); A second mounting pillar (902) protruding on the base (20); A shock absorption spring (903) with two ends respectively connected to the first mounting pillar (901) and the second mounting pillar (902).

12. The dust removal module according to claim 4, characterized in that, It further includes a second noise reduction component (110) arranged on the dust suction pipe assembly (30) and oppositely arranged with the dust suction port (3011).

13. The dust removal module according to claim 12, characterized in that, The dust suction pipe assembly (30) includes: An inner pipe (301) provided with the dust suction port (3011) and a dust outlet, and the dust outlet is arranged at one end of the inner pipe (301) along the axial direction of the inner pipe (301); An outer pipe (302) sleeved outside the inner pipe (301); A suction head assembly (303) connected to the outer pipe (302) and communicating the dust suction port (3011) with the filter screen (200); The second noise reduction component (110) includes a third sound absorption member (1101) and a plurality of third noise reduction holes (1102). The plurality of third noise reduction holes (1102) are spaced apart on the inner pipe (301) and oppositely arranged with the dust suction port (3011); the third sound absorption member (1101) is arranged between the inner pipe (301) and the outer pipe (302), and the projection of the third sound absorption member (1101) on the inner pipe (301) at least covers the third noise reduction holes (1102).

14. An air purification device, characterized in that, It includes a filter screen (200) and the dust removal module (100) according to any one of claims 4 to 13.

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