Dust removal motor, dust removal module and air purification device

Abstract

The utility model 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 utility model, the noise is effectively reduced on the premise that the dust removal capability is not reduced.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, specifically to a dust removal motor, a dust removal module, and an air purification device. Background Technology

[0002] Air purifiers typically purify the air using filters and other purification structures. However, after prolonged use, dust and impurities inevitably accumulate on the filters, affecting air purification quality. Therefore, some related technologies often incorporate a dust removal module to clean the filters. This module generally includes a dust removal motor and a suction pipe. The motor uses the suction pipe to remove dust and impurities adhering to the filter surface. To ensure sufficient suction power, the dust removal motor is usually a high-speed motor, with a rotation speed much higher than that of the air purifier's blades. Consequently, the noise level of the dust removal module is higher than that generated by the air purifier's blades, significantly increasing the overall noise level of the air purifier and exceeding its noise limits.

[0003] In related technologies, noise reduction is usually achieved by lowering the speed of the dust collector motor to meet the noise limits of the air purification device. However, a decrease in the speed of the dust collector motor will lead to a decrease in dust removal capacity, which will affect the dust removal effect on the filter. Utility Model Content

[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 reducing noise by lowering the speed of the dust removal motor will result in a decrease in dust removal capacity, thus affecting the dust removal effect of the dust removal motor on the filter screen.

[0005] In a first aspect, this utility model provides a dust removal motor, comprising:

[0006] outer shell;

[0007] The inner housing is connected inside the outer housing;

[0008] The dust removal fan is connected inside the inner casing;

[0009] The first silencing structure is disposed on one end of the inner shell and located near the air outlet of the dust removal fan;

[0010] A second noise-absorbing structure is disposed between the inner shell and the outer shell, and the projection of the second noise-absorbing structure on the inner shell at least covers the first noise-absorbing structure.

[0011] Beneficial Effects: Due to the high air velocity at the outlet of the dust collector fan in the dust collector motor, high-frequency aerodynamic noise with a large amplitude is generated. Therefore, a first silencing structure is set at one end of the inner shell, positioned close to the outlet of the dust collector fan. This allows the first silencing structure to absorb and reduce high-frequency aerodynamic noise at the outlet. Furthermore, the projection of the second silencing structure onto the inner shell at least covers the first silencing structure. This allows the second silencing structure to absorb and reduce the aerodynamic noise of the entire dust collector motor between the inner and outer shells, and further enhance the silencing effect of the first silencing structure near the outlet. Thus, the dust collector motor can effectively reduce noise without reducing its dust collection capacity and ensuring the dust collection effect on the filter, meeting the noise limits of air purification devices and other equipment using dust collector motors. Simultaneously, since the first silencing structure is located on the inner shell and the second silencing structure is located between the inner and outer shells, neither the first nor the second silencing structure obstructs the airflow at the outlet of the dust collector fan, ensuring effective airflow.

[0012] In one optional embodiment, the first noise-reducing structure includes a plurality of first noise-reducing holes, which are spaced apart on one end of the inner shell and penetrate the inner shell; the second noise-reducing structure is sound-absorbing cotton.

[0013] Beneficial effects: The first noise reduction hole can reduce and absorb the high-frequency aerodynamic noise with higher wind speeds that propagate into the inner shell, and can transmit another part of the high-frequency aerodynamic noise to the second noise reduction structure for reduction and absorption; and the setting of the first noise reduction hole does not require much modification, only the drilling operation at one end of the original inner shell is required; the sound-absorbing cotton has good sound absorption effect and has a certain degree of elasticity, which can be easily placed between the inner shell and the outer shell, and can also form a buffer between the inner shell and the outer shell, and the cost of the sound-absorbing cotton is low.

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

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

[0016] Secondly, this utility model also provides a dust removal module, comprising:

[0017] Base for rotatably connecting the filter screen;

[0018] A suction pipe assembly is connected to the base and located on the side of the filter screen. The suction pipe assembly includes a suction port extending axially along the filter screen and facing the filter screen. The suction pipe assembly also includes a dust outlet.

[0019] A dust collection box is connected to the base. The dust collection box includes a dust inlet and a dust outlet, and the dust inlet is connected to the dust outlet.

[0020] The aforementioned dust removal motor is connected to the base, and the air inlet of the dust removal motor is connected to the air outlet.

[0021] Beneficial effects: When the dust removal module performs dust removal, the drive structure drives the filter to rotate, ensuring that every part of the filter passes through the suction pipe assembly. Simultaneously, the dust removal motor is activated. The air inlet of the dust removal motor transmits suction power to the suction port of the suction pipe assembly through the dust collection box. A strong suction force is generated at the suction port, drawing away impurities and dust adhering to the filter surface. The impurities and dust then exit through the dust outlet into the dust collection box. The dust removal module also possesses the noise reduction and vibration isolation effects of the aforementioned dust removal motor.

[0022] In one alternative embodiment, the dust removal module further includes a first noise reduction component connected to the base, located on the air outlet path of the dust removal motor, and disposed close to the air outlet end of the dust removal motor.

[0023] Beneficial effects: Due to the high air velocity at the outlet of the dust collector fan of the dust collector motor, high-frequency aerodynamic noise with large amplitude is generated. For the entire dust collector motor, the air velocity at the outlet is also high, which easily generates high-frequency aerodynamic noise with large amplitude. Therefore, a first noise reduction component is installed near the outlet on the air path to absorb and reduce aerodynamic noise at the outlet of the dust collector motor. This allows the dust collector motor to effectively reduce noise without reducing its dust removal capacity and ensuring the dust removal effect on the filter screen, thus meeting the noise limits of air purification devices and other devices that use dust collector motors.

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

[0025] A noise reduction plate is connected to the base and spaced apart from the air outlet of the dust removal motor. Several second noise reduction holes are spaced apart on the noise reduction plate.

[0026] A first sound-absorbing component is connected to the base or the noise-reducing plate, and the first sound-absorbing component is located downstream of the noise-reducing plate along the air outlet direction of the dust removal motor.

[0027] Beneficial effects: The second noise reduction hole on the noise reduction plate can reduce and absorb some of the aerodynamic noise in the air outlet path, and can guide another part of the aerodynamic noise to the first sound absorption component for reduction and absorption, effectively reducing noise. Furthermore, since the first noise reduction component is set on the air outlet of the dust removal motor, it does not affect the dust removal effect of the dust removal motor.

[0028] In one optional implementation, the dust removal module further includes:

[0029] The first air duct has one end connected to the air outlet and the other end connected to the air inlet;

[0030] The second sound-absorbing component is disposed between the air inlet and the first air duct.

[0031] Beneficial effects: By installing a second sound-absorbing component at the air inlet, the connection between the air inlet and the first air duct can be wrapped with the second sound-absorbing component, reducing the leakage and radiation of dust suction noise through the connection between the air inlet and the first air duct.

[0032] In one optional embodiment, the dust removal module further includes a first air guide duct, one end of which is connected to the air outlet and the other end of which is connected to the air inlet; the first air guide duct is a flexible pipeline.

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

[0034] In one optional implementation, the dust removal module further includes a second air duct, one end of which is connected to the dust inlet and the other end of which is connected to the dust outlet. The second air duct is a flexible pipe.

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

[0036] In one alternative implementation, the dust removal module further includes a vibration damping component connected between the dust removal motor and the base.

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

[0038] In one optional implementation, the vibration damping component includes:

[0039] The first mounting support protrudes from the outer periphery of the dust removal motor;

[0040] The second mounting post protrudes from the base;

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

[0042] Beneficial effects: The setting of the first and second mounting supports facilitates the connection of the vibration damping springs, thereby reducing the vibration transmission of the dust removal motor to the base through the vibration damping springs, thus reducing vibration noise.

[0043] In one alternative implementation, the dust removal module further includes a second noise reduction component disposed on the suction pipe assembly and positioned opposite to the suction port.

[0044] Beneficial effects: By setting a second noise reduction component on the suction pipe assembly and positioning the second noise reduction component opposite to the suction port, high-frequency aerodynamic noise with high wind speed can be absorbed, resulting in good noise reduction effect.

[0045] In one alternative embodiment, the suction tube assembly includes:

[0046] The inner tube is provided with the dust suction port and the dust discharge port, and the dust discharge port is arranged at one end of the inner tube along the axial direction of the inner tube;

[0047] The outer tube is fitted over the inner tube.

[0048] A suction head assembly is connected to the outer tube and connects the suction port to the filter screen;

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

[0050] Thirdly, this utility model also provides an air purification device, including a filter and the aforementioned dust removal module. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

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

[0053] Figure 2This is an exploded view of the installation of a dust removal motor according to an embodiment of the present utility model;

[0054] Figure 3 This is a schematic diagram from one perspective of a dust removal motor according to an embodiment of the present utility model;

[0055] Figure 4 This is a schematic diagram from another perspective of an embodiment of the dust removal motor of the present utility model;

[0056] Figure 5 This is a schematic diagram of another perspective of a dust removal motor according to an embodiment of the present utility model;

[0057] Figure 6 This is a partial cross-sectional view of a dust removal motor according to an embodiment of the present utility model;

[0058] Figure 7 This is a schematic diagram of a dust removal fan for a dust removal motor according to an embodiment of the present utility model;

[0059] Figure 8 This is a schematic diagram of the inner housing of a dust removal motor according to an embodiment of the present utility model;

[0060] Figure 9 This is a schematic diagram from one perspective of a dust removal module according to an embodiment of the present utility model;

[0061] Figure 10 This is a schematic diagram from another perspective of a dust removal module according to an embodiment of the present utility model;

[0062] Figure 11 This is a schematic diagram of a dust removal module according to another embodiment of the present utility model;

[0063] Figure 12 for Figure 11 Sectional view along line AA;

[0064] Figure 13 for Figure 11 Sectional view along the BB direction;

[0065] Figure 14 This is a schematic diagram of a dust removal module suction pipe assembly according to an embodiment of the present utility model;

[0066] Figure 15 An explosion occurred during the installation of a dust suction pipe assembly of a dust removal module according to an embodiment of this utility model.

[0067] Figure 16 This is a schematic diagram of the inner tube of the dust suction pipe assembly of a dust removal module according to an embodiment of the present utility model;

[0068] Figure 17 This is a partial schematic diagram of an air purification device according to an embodiment of the present utility model;

[0069] Figure 18 Schematic diagram of sound absorption coefficients for different perforated plates Figure 1 ;

[0070] Figure 19 Schematic diagram of sound absorption coefficients for different perforated plates Figure 2 .

[0071] Explanation of reference numerals in the attached figures:

[0072] 10. Dust collector motor; 1. Outer casing; 2. Inner casing; 21. Transition section; 3. Dust collector fan; 31. Air outlet; 32. Air inlet; 4. First silencing structure; 5. Second silencing structure; 6. Elastic vibration isolation structure; 61. First vibration isolation component; 62. Second vibration isolation component;

[0073] 20. Base;

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

[0075] 40. Dust collection box;

[0076] 50. First noise reduction component; 501. Noise reduction panel; 502. First sound-absorbing component;

[0077] 60. First air duct;

[0078] 70. Second sound-absorbing component;

[0079] 80. Second air duct;

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

[0081] 110. Second noise reduction component; 1101. Third sound-absorbing component; 1102. Third noise reduction hole;

[0082] 100. Dust removal module; 200. Filter screen. Detailed Implementation

[0083] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0084] The following is combined with Figures 1 to 19 The following describes embodiments of the present invention.

[0085] According to an embodiment of the present invention, a dust removal motor 10 is provided, comprising an outer shell 1, an inner shell 2, a dust removal fan 3, a first silencing structure 4, and a second silencing structure 5; the inner shell 2 is connected inside the outer shell 1; the dust removal fan 3 is connected inside the inner shell 2; the first silencing structure 4 is disposed on one end of the inner shell 2 and located near the air outlet 31 of the dust removal fan 3; the second silencing structure 5 is disposed between the inner shell 2 and the outer shell 1, and the projection of the second silencing structure 5 on the inner shell 2 at least covers the first silencing structure 4.

[0086] Because the air velocity at the outlet of the dust collector fan 3 of the dust collector motor 10 is relatively high, it will generate high-frequency aerodynamic noise with a large amplitude. Therefore, a first silencing structure 4 is provided at one end of the inner shell 2, and the first silencing structure 4 is positioned close to the air outlet 31 of the dust collector fan 3, so that the first silencing structure 4 can absorb and reduce high-frequency aerodynamic noise at the air outlet 31. Furthermore, the projection of the second silencing structure 5 on the inner shell 2 at least covers the first silencing structure 4, so that the second silencing structure 5 can absorb and reduce the aerodynamic noise of the entire dust collector motor 10 between the inner shell 2 and the outer shell 1, and further enhance the silencing effect of the first silencing structure 4 at the position close to the air outlet 31. Thus, the dust collector motor 10 can effectively reduce noise without reducing the dust removal capacity and ensuring the dust removal effect on the filter 200, thereby meeting the noise limits of air purification devices and other devices using the dust collector motor 10. Meanwhile, since the first silencing structure 4 is installed on the inner shell 2 and the second silencing structure 5 is installed between the inner shell 2 and the outer shell 1, the first silencing structure 4 and the second silencing structure 5 do not block the air outlet 31 of the dust removal fan 3, thus ensuring the air outlet effect.

[0087] In a specific embodiment, the second noise-reducing structure 5 can extend along the axial direction of the inner shell 2 to both ends of the inner shell 2, ensuring the noise reduction effect between the inner shell 2 and the outer shell 1 in the axial direction. Alternatively, the second noise-reducing structure 5 can be provided only at one end of the inner shell 2. The second noise-reducing structure 5 can be a cylindrical structure.

[0088] In this embodiment, one end of the inner housing 2 with the first silencing structure 4 is located downstream, i.e., the rear end, in the entire air outlet direction of the vacuum motor. The other end of the inner housing 2 is located upstream, i.e., the front end, in the entire air outlet direction of the vacuum motor.

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

[0090] The first noise reduction hole can reduce and absorb the high-frequency aerodynamic noise with higher wind speeds that propagate into the inner shell 2, and can transmit another part of the high-frequency aerodynamic noise to the second noise reduction structure 5 for reduction and absorption. Furthermore, the setting of the first noise reduction hole does not require much modification; it is only necessary to drill a hole at one end of the original inner shell 2. The sound-absorbing cotton has good sound absorption effect and has a certain degree of elasticity, which makes it easy to place between the inner shell 2 and the outer shell 1. It can also form a buffer between the inner shell 2 and the outer shell 1, and the cost of the sound-absorbing cotton is low.

[0091] In a specific embodiment, at least two sets of first noise reduction holes are provided along the axial direction of the inner shell 2, and at least two holes are provided in each set along the circumferential direction of the inner shell 2.

[0092] In a specific embodiment, the dust collector fan 3 has axial air intake at its air inlet 32 ​​and radial air outlet 31. The inner casing 2 has an outwardly protruding transition section 21, which corresponds to the air outlet 31 of the dust collector fan 3. The transition section 21 provides sufficient space for the air outlet of the dust collector fan 3 and also changes the originally radial airflow to axial airflow. One end of the first silencing structure 4 on the inner casing 2 is connected to the transition section 21.

[0093] Furthermore, the second sound-absorbing structure 5 between the outer shell 1 and the inner shell 2 can be sound-absorbing cotton with a thickness between 5 mm and 20 mm. The sound-absorbing cotton material can be polyurethane, polyester fiber, or opselomol, etc.

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

[0095] By connecting the dust collector fan 3 to the inner shell 2 through the elastic vibration isolation structure 6, the vibration of the dust collector fan 3 can be reduced to propagate to the outside of the dust collector motor 10, thereby achieving 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 shell 2 away from the first silencing structure 4. One end of the dust collector fan 3 at its air inlet 32 ​​is connected to the inner shell 2 through the first vibration isolation member 61. The first vibration isolation member 61 is an annular structure and is sleeved on the outer periphery of the dust collector fan 3. The elastic vibration isolation structure 6 also includes a second vibration isolation member 62 located at one end of the inner shell 2 near the first silencing structure 4. One end of the dust collector fan 3 at its air outlet 31 is connected to the inner shell 2 through the second vibration isolation member 62. Since the air inlet 32 ​​of the dust collector fan 3 is axially oriented and the air outlet 31 of the dust collector fan 3 is radially oriented, the air outlet 31 of the dust collector fan 3 is located on the outer peripheral wall of the dust collector fan 3. The second vibration isolation member 62 includes a vibration isolation block and a connecting rib. The vibration isolation block is connected to the end of the dust collector fan 3 and will 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 shell 2. There can be at least two connecting ribs, which are distributed at intervals along the circumference of the inner shell 2.

[0098] According to an embodiment of the present invention, another aspect provides a dust removal module 100, including a base 20, a suction pipe assembly 30, a dust collection box 40, and a dust removal motor 10; the base 20 is used to rotatably connect a filter screen 200; the suction pipe assembly 30 is connected to the base 20 and located on the side of the filter screen 200, the suction pipe assembly 30 includes a suction port 3011 extending axially along the filter screen 200, the suction port 3011 facing the filter screen 200, and the suction pipe assembly 30 also includes a dust outlet; the dust collection box 40 is connected to the base 20, the dust collection box 40 includes a dust inlet and a dust outlet, the dust inlet communicating with the dust outlet; the aforementioned dust removal motor 10 is connected to the base 20, and the air inlet of the dust removal motor 10 communicating with the air outlet.

[0099] When the dust removal module 100 performs dust removal, the filter 200 is driven to rotate via a drive structure, ensuring that each position of the filter 200 passes through the suction pipe assembly 30. Simultaneously, the dust removal motor 10 is activated. The air inlet of the dust removal motor 10 transmits suction power to the suction port 3011 of the suction pipe assembly 30 through the dust collection box 40. A strong suction force is generated at the suction port 3011, drawing away impurities and dust adhering to the surface of the filter 200. The impurities and dust then exit through the dust outlet into the dust collection box 40. The dust removal module 100 possesses the noise reduction and vibration isolation effects of the aforementioned dust removal motor 10.

[0100] In a specific embodiment, the dust removal module 100 further includes a drive structure that can drive a motor. The power output end of the drive structure is connected to the filter screen 200 to drive the filter screen 200 to rotate. In one embodiment, when the filter screen 200 is filtering, air enters from the outer periphery of the filter screen 200 to the inner periphery, so that most of the impurities and dust accumulate on the outer periphery of the filter screen 200. In this embodiment, the dust suction pipe assembly 30 is disposed outside the filter screen 200 and has a small gap from the filter screen 200, ensuring that the filter screen 200 can rotate while also 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 disposed near the air outlet end of the dust removal motor 10.

[0102] Because the air velocity at the outlet of the dust removal fan 3 of the dust removal motor 10 is relatively high, it will generate high-frequency aerodynamic noise with a large amplitude. For the entire dust removal motor 10, the air velocity at the outlet is also relatively high, which easily generates high-frequency aerodynamic noise with a large amplitude. Therefore, a first noise reduction component 50 is set at the outlet path near the outlet to absorb and reduce aerodynamic noise at the outlet of the dust removal motor 10. This allows the dust removal motor 10 to effectively reduce noise without reducing its dust removal capacity and ensuring the dust removal effect on the filter 200, thus meeting the noise limits of air purification devices and other devices that use 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-absorbing component 502. The noise reduction plate 501 is connected to the base 20 and is spaced apart from the air outlet of the dust removal motor 10. A plurality of second noise reduction holes are spaced apart on the noise reduction plate 501. The first sound-absorbing component 502 is connected to the base 20 or the noise reduction plate 501 and 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 hole on the noise reduction plate 501 can reduce and absorb some of the aerodynamic noise in the air outlet path, and can guide another part of the aerodynamic noise to the first sound absorption component 502 for reduction and absorption, effectively reducing noise. Furthermore, since the first noise reduction component 50 is set on 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, the noise reduction plate 501 has at least two sets of second noise reduction holes spaced apart along its length, and each set has at least two second noise reduction holes spaced apart along its width. The first sound-absorbing component 502 is made of sound-absorbing cotton and its shape matches the shape of the noise reduction plate 501. The first noise reduction component 50, thus configured, can achieve good noise reduction effect while occupying less space. The sound-absorbing cotton material can be polyurethane, polyester fiber, or opseloyl, etc.

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

[0107] A second sound-absorbing component 70 is installed at the air inlet. The second sound-absorbing component 70 can be used to wrap the connection between the air inlet and the first air duct 60, thereby reducing the leakage and radiation of dust suction noise through the connection between the air inlet and the first air duct 60.

[0108] In a specific embodiment, the second sound-absorbing element 70 is made of sound-absorbing cotton. The sound-absorbing cotton material can be polyurethane, polyester fiber, or opself, etc. In a preferred embodiment, the second sound-absorbing element 70 is an annular structure whose shape matches the air inlet end of the inner shell 2 and the connection end of the first air guide duct 60. The second sound-absorbing element 70 is disposed inside the inner shell 2 and sleeved on the outside of the first air guide duct 60.

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

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

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

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

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

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

[0115] In a specific implementation, the dust removal motor 10 is started, and a negative pressure is generated at the air inlet of the dust removal motor 10. The negative pressure is generated at the suction port 3011 through the first air guide pipe 60, the dust collection box 40, the second air guide pipe 80, and the suction pipe assembly 30 in sequence. The negative pressure airflow generated at the suction port 3011 sucks away the impurities and dust attached to the filter screen 200. The impurities and dust enter the dust collection box 40 through the dust outlet of the suction pipe assembly 30, the second air guide pipe 80, and the dust inlet in sequence. Dust and air are separated in the dust collection box 40, and the impurities and dust are collected in the dust collection box 40. Clean air enters the dust removal motor 10 from the air inlet through the air outlet of the dust collection box 40 and the first air guide pipe 60, and is discharged from the air outlet of the dust removal motor 10.

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

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

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

[0119] The arrangement of the first mounting post 901 and the second mounting post 902 facilitates the connection of the vibration damping spring 903, thereby reducing the vibration transmission of the dust removal motor 10 to the base 20 through the vibration damping spring 903, thus reducing vibration noise.

[0120] In a further embodiment, at least two first mounting supports 901 are distributed at intervals along the air outlet direction of the dust collector motor 10. The number and position of the second mounting supports 902 match the number and position of the first mounting supports 901. The number and position of the damping springs 903 also match the number and position of the first mounting supports 901. This allows for the equalization of vibration along the air outlet direction of the dust collector motor 10, ensuring uniform force distribution on the dust collector motor 10. Preferably, in one embodiment, two first mounting supports 901 are respectively disposed at the air inlet and air outlet ends of the dust collector 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 seal the receiving cavity. The dust collector motor 10, dust collection box 40, first air duct 60, and second air duct 80 are all mounted on the base and located within the receiving cavity, ensuring both the integrity and aesthetics of the base 20 while protecting the aforementioned structures. A first mounting post 901 is provided on the top of the dust collector motor 10, and a second mounting post 902 is provided on the cover plate. The suction pipe assembly 30 is mounted on the cover plate and connected to the second air duct 80 through clearance holes on the cover plate.

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

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

[0124] A second noise reduction component 110 is provided on the suction pipe assembly 30, and the second noise reduction component 110 is positioned opposite to the suction port 3011. This can absorb high-frequency aerodynamic noise with high wind speed, resulting in good noise reduction effect.

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

[0126] The third noise reduction hole 1102 is located opposite the suction port 3011. It can absorb and reduce the high-frequency aerodynamic noise of the high-speed part of the airflow entering the inner tube 301, and can transmit another part of the high-frequency aerodynamic noise to the third sound-absorbing component 1101 for reduction and absorption, thus effectively reducing noise. Furthermore, the setting of the third noise reduction hole 1102 does not require much modification to the suction tube assembly 30. It is only necessary to make a hole in the original inner tube 301 at the position opposite to the suction port 3011.

[0127] In a specific embodiment, at least two sets of third noise reduction holes 1102 are spaced apart along the circumferential direction on the inner tube 301, and each set has at least two third noise reduction holes 1102 spaced apart along the axial direction of the inner tube 301. The third sound-absorbing component 1101 is made of sound-absorbing cotton, and its shape matches the shape of the inner tube 301 and its appearance, which can occupy less space while having a good noise reduction effect. The sound-absorbing cotton material can be polyurethane, polyester fiber, or opsysol, etc. The dust suction port 3011 on the inner tube 301 may include at least two, preferably four, arranged sequentially and spaced apart along the axial direction, and each dust suction port 3011 is a strip-shaped opening extending along the axial direction.

[0128] The high-frequency aerodynamic noise mentioned in this embodiment mainly falls within the frequency range of 1000Hz-1300Hz. Figure 18 and 19 As shown, when the thickness of the shell material with noise reduction holes is 2mm and the thickness of the air back cavity is 10mm, the maximum sound absorption coefficient of the perforated plate with a hole spacing of 13mm and a hole diameter of 2mm, as well as the perforated plate with a hole spacing of 26mm and a hole spacing of 4.5mm, is between 1000Hz and 1300Hz. Therefore, the recommended parameter ranges for the second noise reduction hole on the noise reduction plate 501 at the air outlet of the vacuum cleaner motor, the first noise reduction hole on the inner shell 2 of the vacuum cleaner motor, and the third noise reduction hole 1102 on the inner tube 301 of the vacuum cleaner pipe assembly 30 mentioned in this embodiment are as follows: hole spacing 13-26mm, hole diameter 2-4.5mm.

[0129] According to an embodiment of the present invention, in another aspect, an air purification device is also provided, including a filter 200 and the aforementioned dust removal module 100.

[0130] Although embodiments of the present invention have been 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, include: Outer shell (1); The inner shell (2) is connected inside the outer shell (1); A dust removal fan (3) is connected inside the inner casing (2); The first silencing structure (4) is provided on one end of the inner shell (2) and located near the air outlet (31) of the dust removal fan (3); A second noise-absorbing structure (5) is disposed between the inner shell (2) and the outer shell (1), and the projection of the second noise-absorbing structure (5) on the inner shell (2) at least covers the first noise-absorbing structure (4).

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

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

4. A dust removal module, characterized in that, include: A base (20) for rotatably connecting a filter screen (200); A suction pipe assembly (30) is connected to the base (20) and located on the side of the filter (200). The suction pipe assembly (30) includes a suction port (3011) extending axially along the filter (200) and facing the filter (200). The suction pipe assembly (30) also includes a dust outlet. A dust collection box (40) is connected to the base (20). The dust collection box (40) includes a dust inlet and a dust outlet, and the dust inlet is connected to the dust outlet. The dust removal motor (10) according to any one of claims 1 to 3 is connected to the base (20), and the air inlet of the dust removal motor (10) is connected to the air outlet.

5. The dust removal module according to claim 4, characterized in that, It also 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 set 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 component (50) includes: A noise reduction plate (501) is connected to the base (20) and spaced apart from the air outlet of the dust removal motor (10). A number of second noise reduction holes are spaced apart on the noise reduction plate (501). The first sound-absorbing component (502) is connected to the base (20) or the noise reduction plate (501), and the first sound-absorbing component (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, Also includes: The first air duct (60) is connected at one end to the air outlet and at the other end to the air inlet. The second sound-absorbing component (70) is disposed between the air inlet end and the first air duct (60).

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

9. The dust removal module according to claim 4, characterized in that, It also includes a second air duct (80), one end of which is connected to the dust inlet and the other end is connected to the dust outlet. The second air duct (80) is a flexible pipeline.

10. The dust removal module according to claim 4, characterized in that, It also includes a vibration damping assembly (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 vibration damping component (90) includes: The first mounting post (901) protrudes from the outer periphery of the dust removal motor (10); The second mounting post (902) protrudes from the base (20); The damping spring (903) is connected at both ends to the first mounting post (901) and the second mounting post (902) respectively.

12. The dust removal module according to claim 4, characterized in that, It also includes a second noise reduction component (110), which is disposed on the suction pipe assembly (30) and is disposed opposite to the suction port (3011).

13. The dust removal module according to claim 12, characterized in that, The suction pipe assembly (30) includes: The inner tube (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 tube (301) along the axial direction of the inner tube (301); The outer tube (302) is sleeved on the outside of the inner tube (301); The suction head assembly (303) is connected to the outer tube (302) and connects the suction port (3011) to the filter (200); The second noise reduction component (110) includes a third sound-absorbing element (1101) and a plurality of third noise reduction holes (1102). The plurality of third noise reduction holes (1102) are spaced apart on the inner tube (301) and are disposed opposite to the dust suction port (3011). The third sound-absorbing element (1101) is disposed between the inner tube (301) and the outer tube (302). The projection of the third sound-absorbing element (1101) on the inner tube (301) at least covers the third noise reduction holes (1102).

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

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