Air blower used in dust collector

Abstract

The air blower comprises a motor device and an impeller device which are vertically and axially connected up and down, the impeller device comprises an impeller cover of a rotary shell, a movable impeller is concentrically sleeved with the impeller cover, and the center of the movable impeller is fixedly arranged at the lower end of a center shaft of the motor device in a sleeved mode. The center openings of the bottom end faces of the impeller cover and the movable impeller are suction inlets, a plurality of drainage holes are formed in the vertical circumferential face of the impeller cover around the circumference, and when the motor device drives the movable impeller to rotate, fluid is driven to enter from the suction inlets and flow out from the drainage holes distributed in the circumference. A permanent magnet brushless direct current motor and a controller are integrated to form a motor of the air blower, energy consumption is low, the size of a driving system is greatly reduced, water and dust can be rapidly and conveniently absorbed by the air blower through drainage holes formed in the circumference of an impeller cover, a filtering material is arranged in the dust collector, solid-liquid separation is integrally achieved, and the service life of the dust collector is prolonged. And a cooling fan is arranged in the blower motor, so that cooling can be realized during use.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning electrical appliances, in particular to a blower used in a vacuum cleaner. Background Art

[0002] The blower inside the vacuum cleaner is composed of a motor and a rotating impeller. The working principle is to use the motor to drive the blades to rotate at high speed, generate negative air pressure in the sealed shell, and absorb dust. The motor and the shell with rotating blades are limited in size when assembled together, and it is easy to occupy too much space. The combination of the motor and the blade shell makes the overall maintenance inconvenient. Conventional vacuum cleaners can absorb a variety of impurities at the same time, including sewage, solid particles, etc. These impurities are uniformly absorbed into the storage room inside the vacuum cleaner and then kept and processed uniformly. In this way, sewage and solid impurities are mixed together and are difficult to handle. If solid impurities and liquids can be automatically separated into solid-liquid separation, it will be much more convenient. Existing vacuum cleaners absorb liquids and solids at the same time, which makes the water absorption function poor. This requires a new type of vacuum cleaner blower. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a blower for the inside of a vacuum cleaner, so as to solve the problems that the blower inside the vacuum cleaner occupies a large space, is inconvenient to maintain and has a poor liquid absorbing efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A blower for use in a vacuum cleaner comprises a motor device and an impeller device connected vertically up and down, the impeller device comprising an impeller cover of a rotating shell, a movable impeller is concentrically sleeved inside the impeller cover, the central fixed sleeve of the movable impeller is arranged on the lower end of the central axis of the motor device, the central openings of the bottom end surfaces of the impeller cover and the movable impeller are suction ports, a plurality of drainage holes are arranged around the circumference on the vertical circumferential surface of the impeller cover, when the motor device drives the movable impeller to rotate, fluid is driven to enter from the suction port and flow out from the drainage holes arranged circumferentially.

[0006] As a preferred embodiment, the top end surface of the impeller cover is an end cover, which is close to the bottom of the motor device and is arranged apart, and the center of the end cover is set on the central axis through a lower bearing sleeve, and the top end surface of the impeller is a flat plate, the top center of the flat plate abuts the bottom of the pressure plate, and the top of the pressure plate abuts on the inner circumference of the bearing, and bolts are screwed on the lower end of the central axis to fix the flat plate, and the circumferential side surface of the end cover extends axially beyond the bottom of the outer wall of the motor device, and the column extending on the end surface of the end cover is fixedly connected to the outer wall of the motor device.

[0007] As a preferred embodiment, the drainage holes are arranged on the side of the convex cavity of the circumferential array of the impeller cover, the outermost planes of the multiple convex cavities are arranged along the tangent of the impeller cover, the drainage holes are opened on the convex cavity along the outermost side of the tangent of the impeller cover, and the drainage holes are on the convex cavity along the radial direction of the impeller cover.

[0008] As a preferred embodiment, a magnetic steel is sleeved on the middle part of the central axis of the motor device, and a stator core is sleeved concentrically and spaced apart on the outer side of the circumference of the magnetic steel. The end faces of both sides of the stator core are arranged on a skeleton, and the skeleton is arranged on a bracket, and the bracket is connected to the outer side wall. The upper end of the central axis is installed on the outer circumference of the bracket through an upper bearing, and an upper cover is arranged on the top of the outer side wall. A horizontal PCB board is arranged inside the upper cover, and the PCB board is connected to the bracket, and the PCB board is connected to the wire.

[0009] As a preferred embodiment, a fan is sleeved on the central axis at the lower end of the circumference of the outer wall, the outer circumferential edge of the fan abuts against the inner circumference of the corrugated washer, the outer circumference of the corrugated washer is connected to the inner side surface of the lower end of the outer wall, a vent hole is opened in the middle of the top of the upper cover, a gap for air flow is left between the outer circumference of the PCB board and the inner wall of the upper cover, a channel for air flow is provided on the frame and the bracket, and the relative distance between the fan and the end cover is the outflow channel.

[0010] As a preferred embodiment, a plurality of side vents are provided on the outer circumferential side of the upper cover.

[0011] As a preferred embodiment, a sealing ring is provided between the impeller cover and the impeller on the inner circumferential opening of the bottom end surface close to the suction port.

[0012] The beneficial effects of the utility model are as follows: the motor of the blower adopts a permanent magnet brushless DC motor and a controller integrated, the electric energy is converted into the rotational mechanical energy of the motor, and the direct performance is energy saving, which is more than 20% energy saving than the traditional motor, low energy consumption, intelligent control performance such as communication control, greatly reducing the volume of the drive system, achieving the goal of lightweight design, and convenient assembly, quick replacement and convenient motor maintenance and other functions in one, only one dust collector device is needed to complete the all-round cleaning of the ground, the drainage holes arranged on the circumference of the impeller cover make the blower absorb water and dust more quickly and conveniently, the dust collector is provided with a filter material inside, so that the whole realizes solid-liquid separation, and the blower motor is provided with a cooling fan inside, which can cool down when in use. The motor device and the impeller device are each designed with an air duct inside, the air duct inside the motor device is used for cooling, and the air duct inside the impeller device can absorb dust and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 It is a cross-sectional view of the utility model;

[0015] Figure 2 This is a schematic diagram of the appearance of the utility model;

[0016] Figure 3 This is a schematic diagram of the appearance of the utility model from another perspective;

[0017] Figure 4 It is a three-dimensional cross-sectional view of the utility model;

[0018] Figure 1~Figure 4 Explanation of the reference numerals in the accompanying drawings: 1. sealing ring; 2. impeller cover; 3. impeller; 4. end cover; 5. fan; 6. frame; 7. stator core; 8. outer wall; 9. bracket; 10. corrugated washer; 11. upper cover; 12. PCB board; 13. upper bearing; 14. magnet; 15. center axis; 16. lower bearing; 17. pressure plate; 18. flat plate; 21. suction port; 22. drainage hole; 23. convex cavity; 111. vent hole; 112. side vent hole; 121. wire. DETAILED DESCRIPTION

[0019] The specific implementation scheme of the utility model is described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1~Figure 4 The blower shown for use inside a vacuum cleaner comprises a motor device and an impeller device connected vertically up and down, the impeller device comprising an impeller cover 2 of a rotating shell, a movable impeller 3 is concentrically sleeved inside the impeller cover 2, the center of the movable impeller 3 is fixedly sleeved on the lower end of the central axis 15 of the motor device, the center opening of the bottom end surface of the impeller cover 2 and the movable impeller 3 is a suction port 21, and a plurality of drainage holes 22 are provided around the circumference on the vertical circumferential surface of the impeller cover 2. When the motor device drives the movable impeller 3 to rotate, it drives the fluid to enter from the suction port 21 and flow out from the drainage holes 22 arranged circumferentially.

[0021] Specifically, a filter material, such as HEPA, is provided on the suction path inside the vacuum cleaner to isolate large solid particles. The solids are stored in a fixed position and do not enter the impeller device inside the blower. The blower is only used to absorb dust and water. The discharge holes 22 of the blower are arranged to be distributed in a circle. When the impeller 3 rotates, when water and dust are sucked in, the water is smoothly thrown out along the drainage holes 22 distributed in the circle under the action of centrifugal force, so that the water absorption effect is good and dry and wet separation can be achieved.

[0022] like Figure 1 and Figure 4The top end face of the impeller cover 2 is an end cover 4, which is close to the bottom of the motor device and is separated. The center of the end cover 4 is sleeved on the central shaft 15 through the lower bearing 16. The top end face of the impeller 3 is a flat plate 18, the top center of the flat plate 18 abuts against the bottom of the pressure plate 17, and the top of the pressure plate 17 abuts on the inner circumference of the bearing 16. Bolts are screwed on the lower end of the central shaft 15 to fix the flat plate 18. The circumferential side of the end cover 4 extends axially beyond the bottom of the outer wall 8 of the motor device, and the column extending on the end face of the end cover 4 is fixedly connected to the outer wall 8 of the motor device. The impeller device is arranged at one end of the motor device, so that the size of the impeller device is easy to set. The outer shell of the impeller device includes the impeller cover 2 and the end cover 4, which is fixedly connected to the outer shell of the motor device and does not rotate with the impeller 3.

[0023] like Figure 2 The drainage holes 22 are arranged on the side of the convex cavity 23 of the circumferential array of the impeller cover 2, the outermost planes of the plurality of convex cavities 23 are arranged along the tangent of the impeller cover 2, the drainage holes 22 are opened on the outermost side of the convex cavity 23 along the tangent of the impeller cover 2, and the drainage holes 22 are on the convex cavity 23 along the radial direction of the impeller cover 2. The drainage holes 22 arranged in this way can flow out along the tangent direction of the impeller cover 2, so that water can be easily and quickly sucked away.

[0024] like Figure 1 and Figure 4 The central axis 15 of the motor device is sleeved with a magnetic steel 14 in the middle, and the outer side of the circumference of the magnetic steel 14 is sleeved with a stator core 7 in a concentric and separated manner. The end faces of the stator core 7 are arranged on the frame 6, and the frame 6 is arranged on the bracket 9. The bracket 9 is connected to the outer wall 8. The upper end of the central axis 15 is installed on the outer circumference of the bracket 9 through the upper bearing 13. The top of the outer wall 8 is provided with an upper cover 11. The interior of the upper cover 11 is provided with a horizontal PCB board 12. The PCB board 12 is connected to the bracket 9, and the PCB board 12 is connected to the wire 121. The stator core 7 and the rotating magnetic steel 14 are used inside the motor device, and the brushless vacuum cleaner motor is used. The efficiency of converting electrical energy into mechanical rotation is high. The PCB board 12 is used for control, and the structural integration of the permanent magnet brushless DC motor and the controller integrated system is realized, which greatly reduces the volume of the drive system and achieves the goal of lightweight design. It also integrates multiple functions such as convenient assembly, quick replacement, and convenient motor maintenance.

[0025] like Figure 1 and Figure 4The fan 5 is sleeved on the central axis 15 at the circumferential lower end of the outer wall 8, the outer circumferential edge of the fan 5 abuts against the inner circumference of the corrugated gasket 10, the outer circumference of the corrugated gasket 10 is connected to the inner side surface of the lower end of the outer wall 8, a vent hole 111 is opened in the middle of the top of the upper cover 11, a gap for airflow is left between the outer circumference of the PCB board 12 and the inner wall of the upper cover 11, a channel for airflow is provided on the frame 6 and the bracket 9, and the relative distance between the fan 5 and the end cover 4 is the outflow channel. The fan 5 is provided at one end of the motor device close to the impeller device, so that the heat dissipation wind enters from the top of the motor device, then passes through the inside of the motor device, and finally flows out from the gap between the fan 5 and the end cover 4.

[0026] like Figure 2 The outer circumferential side of the upper cover 11 is also provided with a plurality of side vents 112. The side vents 112 facilitate wind to enter from different directions when the fan 5 rotates, and also facilitate internal heat dissipation.

[0027] like Figure 1 and Figure 4 A sealing ring 1 is provided between the impeller cover 2 and the impeller 3 on the inner circumferential opening of the bottom end surface near the suction port 21 to ensure the sealing performance of the impeller 3 during rotation.

[0028] The working process of the utility model is as follows:

[0029] According to Figures 1-4, first, after the rotor part is bonded to the central shaft 15 by the magnetic steel 14, the fan 5 is installed on the central shaft 15, the upper bearing 13 and the lower bearing 16 are installed, the rotor assembly is assembled, the coil is wound by the frame 6 and the stator core 7 to form the stator assembly, the PCB board 12 is welded, the upper cover 11 is installed, and then the impeller 3 is installed in the impeller cover 2. When in use, the motor device is started, the central shaft 15 drives the impeller 3 to rotate, the negative pressure absorbs the liquid, and the dry and wet separation is realized, and the cooling fan 5 inside the motor device is started to cool the inside of the motor device.

[0030] The above embodiments are only illustrative of the principles and effects of the invention of the utility model, as well as some embodiments of its application, and are not intended to limit the invention of the utility model. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A blower for use in a vacuum cleaner, characterized in that: The invention comprises a motor device and an impeller device connected vertically and axially up and down, the impeller device comprising an impeller cover (2) of a rotating housing, a movable impeller (3) being concentrically sleeved inside the impeller cover (2), the movable impeller (3) being centrally sleeved on the lower end of a central axis (15) of the motor device, the central opening of the bottom end surface of the impeller cover (2) and the movable impeller (3) being a suction port (21), a plurality of drainage holes (22) being circumferentially arranged on the vertical circumferential surface of the impeller cover (2), and when the motor device drives the movable impeller (3) to rotate, the fluid is driven to enter from the suction port (21) and flow out from the drainage holes (22) arranged circumferentially.

2. The blower for use in a vacuum cleaner according to claim 1, characterized in that: The top end surface of the impeller cover (2) is an end cover (4), which is close to the bottom of the motor device and is arranged apart from it. The center of the end cover (4) is sleeved on the central shaft (15) through a lower bearing (16). The top end surface of the impeller (3) is a flat plate (18), the top center of the flat plate (18) abuts against the bottom of the pressure plate (17), the top of the pressure plate (17) abuts against the inner circumference of the bearing (16), and bolts are screwed on the lower end of the central shaft (15) to fix the flat plate (18). The circumferential side surface of the end cover (4) extends axially beyond the bottom of the outer wall (8) of the motor device, and the column extending from the end surface of the end cover (4) is fixedly connected to the outer wall (8) of the motor device.

3. The blower for use in a vacuum cleaner according to claim 1, characterized in that: The drainage holes (22) are arranged on the side of the convex cavity (23) of the circumferential array of the impeller cover (2), the outermost planes of the plurality of convex cavities (23) are arranged along the tangent of the impeller cover (2), the drainage holes (22) are opened on the convex cavity (23) along the outermost end of the tangent of the impeller cover (2), and the drainage holes (22) are arranged on the convex cavity (23) along the radial direction of the impeller cover (2).

4. The blower for use in a vacuum cleaner according to claim 1, characterized in that: A magnetic steel (14) is sleeved on the middle of the central axis (15) of the motor device, a stator core (7) is sleeved concentrically and spaced apart on the outer circumference of the magnetic steel (14), both side end surfaces of the stator core (7) are arranged on a frame (6), the frame (6) is arranged on a bracket (9), the bracket (9) is connected to an outer wall (8), the upper end of the central axis (15) is mounted on the outer circumference of the bracket (9) via an upper bearing (13), an upper cover (11) is arranged on the top of the outer wall (8), a horizontal PCB board (12) is arranged inside the upper cover (11), the PCB board (12) is connected to the bracket (9), and the PCB board (12) is connected to a wire (121).

5. The blower for use in a vacuum cleaner according to claim 4, characterized in that: A fan (5) is sleeved on the central axis (15) at the circumferential lower end of the outer wall (8); the outer circumferential edge of the fan (5) abuts against the inner circumference of the corrugated gasket (10); the outer circumference of the corrugated gasket (10) is connected to the inner side surface of the lower end of the outer wall (8); a vent hole (111) is provided in the middle of the top of the upper cover (11); a gap for airflow is left between the outer circumference of the PCB board (12) and the inner wall of the upper cover (11); a channel for airflow is provided on the frame (6) and the bracket (9); and the relative distance between the fan (5) and the end cover (4) is an outflow channel.

6. The blower for use in a vacuum cleaner according to claim 4, characterized in that: The outer circumferential side surface of the upper cover (11) is also provided with a plurality of side vent holes (112).

7. The blower for use in a vacuum cleaner according to claim 1, characterized in that: A sealing ring (1) is provided between the impeller cover (2) and the moving impeller (3) on an inner circumferential opening of a bottom end surface close to the suction port (21).

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