CN213687262U

CN213687262U - Movable air purifier

Info

Publication number: CN213687262U
Application number: CN202022762952.0U
Authority: CN
Inventors: 张笛; 郁亚南; 钟志鸣; 何增丰
Original assignee: Dongguan Benmo Technology Co Ltd
Current assignee: Dongguan Benmo Technology Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-07-13
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a movable air purifier, which comprises a purifier body, a walking wheel and a direct drive motor, wherein the direct drive motor comprises a rotor assembly and a stator assembly, the rotor assembly is arranged outside the stator assembly, the walking wheel is connected with the rotor assembly, and the stator assembly is connected with the bottom of the purifier body; when the purifier is powered on, the rotor assembly rotates outside the stator assembly under the action of electromagnetic force to drive the traveling wheels to rotate and drive the purifier body to move. The utility model discloses a directly drive the motor and constitute the power wheel with the walking wheel, the direct drive clarifier body removes, has enlarged the purification scope of clarifier, directly drives the motor and need not reducing gear box and other transmission, does not have the carbon brush structure, can not retrench the structure because of the life of the influence motor of carbon brush wearing and tearing, has reduced the fault rate, has promoted power transmission's efficiency, directly drives motor own rotational speed simultaneously and hangs down, and the vibration source order is low, and the noise of production has also reduced.

Description

Movable air purifier

Technical Field

The utility model belongs to the technical field of air purifier, concretely relates to portable air purifier.

Background

With the outbreak of the environmental air pollution problem in China, people pay more and more attention to the air quality of the environment where the people are located. As early as 2011 the world health organization pointed out: indoor air is already 5-10 times more polluted than outdoor air. Such as bacteria, viruses, odors, chemical gases, etc. suspended in the air can threaten human health. Especially, a newly decorated house is extremely harmful to susceptible people such as old people with poor resistance, infants, pregnant women and the like. As the most effective product for improving air quality, air purifiers are the standard of many families.

The common air purifier cannot automatically move, and can only purify air near the air purifier, so that the whole indoor air cannot be purified. The humidifier with the moving device also adopts a belt transmission device or a brush motor as a power source, and a reduction box as a transmission device, so that the effects of reducing speed and increasing speed are realized. The problems of low efficiency, short service life, high noise, complex layout and the like of the transmission device can be caused. The existing transmission device or motor has the following defects:

1. the life of the brushed motor is short: because the commutation is realized by the carbon brush, the abrasion condition exists;

2. when the device is matched with a reduction gearbox, the noise is large: the motor has high rotating speed and high vibration source order, and the reduction gearbox can also make sound during transmission;

3. the reduction box has low efficiency and large power consumption: the reduction gearbox has friction resistance and lubricating grease resistance, so that the transmission efficiency is low;

4. the layout of the motor and the reduction box is complex: the shell needs to be designed according to the size of the gear and the size of the motor, and the layout is complex;

5. because the reduction gearbox is matched with a gap, the output end of the reduction gearbox has a back gap.

SUMMERY OF THE UTILITY MODEL

In order to solve some problems and not enough that above-mentioned prior art exists, the utility model aims at providing a portable air purifier can enlarge working range, and its motor structure retrencies, and power transmission is efficient, and the noise is low, long service life.

In order to achieve the purpose, the utility model provides a mobile air purifier, which comprises a purifier body, a walking wheel and a direct drive motor, wherein the direct drive motor comprises a rotor assembly and a stator assembly, the rotor assembly is arranged outside the stator assembly, the walking wheel is connected with the rotor assembly, and the stator assembly is connected with the bottom of the purifier body; when the purifier is powered on, the rotor assembly rotates outside the stator assembly under the action of electromagnetic force to drive the traveling wheels to rotate and drive the purifier body to move.

Further, the rotor subassembly includes upper cover and magnet assembly, and the upper cover setting is in stator module's outside, and magnet assembly installs on the inner wall of upper cover, and the outside at the upper cover is installed to the walking wheel.

Further, the upper cover comprises a top surface and a side wall, the top surface is arranged at the upper end of the side wall, and the top surface is movably matched with the stator assembly.

Further, the magnet assembly surface is pasted on the lateral wall, or is inlayed in the mounting groove of lateral wall.

Further, the rotor subassembly still includes the motor shaft, and the one end of motor shaft is connected with the top surface of upper cover, and the upper cover passes through the motor shaft to be connected with stator module.

Further, the direct drive motor further comprises a base, the upper cover is arranged on the base, and the stator assembly is arranged in a cavity formed by the upper cover and the base.

Further, the base comprises a bottom surface and a central shaft, the central shaft is fixed on the bottom surface, and the stator assembly is sleeved on the central shaft.

Furthermore, a bearing chamber is arranged in the middle of the central shaft, and the motor shaft is movably connected with the bearing chamber through a bearing.

Further, stator module includes iron core and copper line, and the copper line winding is on the iron core, and the iron core cover is established on the center pin, and magnet module's magnetic pole number is greater than the tooth socket number of iron core.

Further, the direct drive motor further comprises a circuit board used for controlling reversing, the circuit board is electrically connected with the stator assembly, three wiring terminals are arranged on the circuit board, three wiring heads are arranged on the stator assembly, and the wiring heads are connected with the wiring terminals in a one-to-one correspondence mode.

Compared with the prior art, the beneficial effects of the utility model include: the direct drive motor and the walking wheel form a power wheel to directly drive the purifier body to move, so that the purification range of the purifier is enlarged. The utility model does not need a reduction box and other transmission devices, has no carbon brush structure, and can not influence the service life of the motor due to the abrasion of the carbon brush; the direct-drive motor has the advantages that the reduction gearbox is removed, the problem that the back clearance exists at the output end of the reduction gearbox does not exist, meanwhile, the internal structure of the motor can be simplified, the failure rate is reduced, the power transmission efficiency is improved, the kinetic energy consumed by the reduction gearbox and the noise generated by the reduction gearbox are eliminated, meanwhile, the direct-drive motor is low in rotating speed and low in vibration source order, and the generated noise is also reduced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a power wheel according to an embodiment of the present invention;

FIG. 3 is an exploded view of the power wheel structure of the embodiment of the present invention;

fig. 4 is a cross-sectional view of a direct drive motor according to an embodiment of the present invention;

fig. 5 is an exploded view of a direct drive motor structure according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a rotor assembly according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiment of the utility model provides a mobile air purifier, as shown in fig. 1-6, including purifier body 1, walking wheel 2 and direct drive motor 3, direct drive motor 3 includes rotor subassembly 31 and stator module 32, rotor subassembly 31 is installed outside stator module 32, walking wheel 2 is connected with rotor subassembly 31, stator module 32 is connected with the bottom of purifier body 1; when the purifier is powered on, under the action of electromagnetic force, the rotor assembly 31 rotates outside the stator assembly 32 to drive the travelling wheels 2 to rotate and drive the purifier body 1 to move.

In the embodiment, the direct drive motor 3 and the walking wheel 2 form a power wheel to directly drive the purifier body 1 to move, so that the purification range of the purifier is enlarged. The utility model does not need a reduction box and other transmission devices, has no carbon brush structure, and can not influence the service life of the motor due to the abrasion of the carbon brush; the reduction gearbox is removed, the problem that the back clearance exists at the output end of the reduction gearbox does not exist, meanwhile, the internal structure of the motor can be simplified, the failure rate is reduced, the power transmission efficiency is improved, the kinetic energy consumed by the reduction gearbox and the noise generated by the reduction gearbox are eliminated, meanwhile, the direct drive motor 3 is low in rotating speed and low in vibration source order, and the generated noise is also reduced.

The rotor assembly 31 includes an upper cover 311 and a magnet assembly 312, the upper cover 311 is disposed outside the stator assembly 32, the magnet assembly 312 is mounted on an inner wall of the upper cover 311, and the road wheel 2 is mounted outside the upper cover 311. When the electric vehicle is powered on to work, the magnet assembly 312 and the stator assembly 32 generate electromagnetic force, the electromagnetic force drives the magnet assembly 312 to rotate, and drives the upper cover 311 to rotate, and then drives the traveling wheels 2 to rotate.

The upper cover 311 includes a top surface 3111 and a sidewall 3112, the top surface 3111 is disposed on the upper end of the sidewall 3112, the magnet assembly 312 is mounted on the sidewall 3112, and an air gap is formed with the stator assembly 32, and the top surface 3111 is movably matched with the stator assembly 32. The magnet assembly 312 on the sidewall 3112 and the stator assembly 32 generate magnetic force, and rotate the upper cover 311.

Magnet subassembly 312 can be through the viscose table paste on lateral wall 3112, also can set up the mounting groove on lateral wall 3112, inlays magnet subassembly 312 in the mounting groove.

The rotor assembly 31 further includes a motor shaft 313, one end of the motor shaft 313 is connected to the top surface 3111, and the upper cover 311 is movably connected to the stator assembly 32 through the motor shaft 313. The rotation of the motor shaft 313 can make the rotation of the upper cover 311 more stable and smooth.

The direct drive motor 3 further comprises a base 33, an upper cover 311 is arranged on the base 33, and a stator assembly 32 is arranged in a cavity formed by the upper cover 311 and the base 33. The stator assembly 32 is fixedly supported by the base 33, so that the upper cover 311 can stably rotate.

The base 33 includes a bottom surface 331 and a central shaft 332, the central shaft 332 is fixed on the bottom surface 331, the stator assembly 32 is sleeved on the central shaft 332, the bottom surface 331 is located below the upper cover 311, the central shaft 332 is located in the inner cavity of the motor, and the motor shaft 313 is movably arranged in the central shaft 332. The stator assembly 32 and the base 33 are in interference fit, so that the stator assembly 32 and the base 33 form a fastening connection, and when the motor works, the stator assembly 32 is fixed, and the motor shaft 313 rotates in the central shaft 332.

The center shaft 332 is provided with a bearing chamber in the middle, and the motor shaft 313 and the bearing chamber of the center shaft 332 are movably connected through a bearing 4. The outer ring of the bearing 4 is in interference fit with the inner wall of the central shaft 332, the inner ring of the bearing 4 is in loose fit with the motor shaft 313, the screw 5 is arranged at the top end of the motor shaft 313, the motor shaft 313 is pre-tightened on the bearing 4 through the screw 5, the axial clearance of the bearing 4 is eliminated, and meanwhile, the axial movement of the motor shaft 313 is prevented.

The stator assembly 32 includes an iron core 321 and copper wires 322, the copper wires 322 are wound on the iron core 321, the iron core 321 is sleeved on the central shaft 332, and the number of magnetic poles of the magnet assembly 312 is greater than the number of tooth slots of the iron core 321.

The magnet assembly 312 includes a plurality of magnets 3121, each magnet 3121 is a magnetic pole, the number of slots 3211 of the core 321 is equal to the number of magnets 3121, and when power is applied, a magnetic force is formed between the magnets 3121 and the slots 3211. In this embodiment, the magnet assembly 312 is preferably provided with twenty magnets 3121, i.e., twenty poles; the slots 3211 of the core 321 are preferably eighteen. This allows the magnet assembly 32 to rotate with uniform force at every angle and smooth rotation.

The embodiment also comprises a circuit board 6 for controlling reversing, which is arranged on the base 33, and the stator assembly 32 is electrically connected with the circuit board 6; three wiring terminals are arranged on the circuit board 6, three wiring heads are arranged on the stator assembly 32, and the wiring heads are connected with the wiring terminals in a one-to-one correspondence mode. Thus, three-phase commutation of the stator assembly 32 is realized through the circuit board 6, and the power output of the motor is more stable and uniform.

The signal lines of the circuit board 6 are electrically connected to the inside of the purifier body 1 through the through holes on the bottom surface 331.

This embodiment also includes a washer 7, the washer 7 being disposed at the bottom of the stator assembly 32.

In the present embodiment, the circuit board 6 is preferably disposed on the base 33, the gasket 7 is located below the stator assembly 32 and above the circuit board 6, and the gasket 7 can form a gap between the stator assembly 32 and the circuit board 6 to avoid interference between the stator assembly 32 and the circuit board 6.

The workflow of this embodiment is as follows;

when the purifier works, the circuit board 6 and the copper wire 322 are electrified, the tooth grooves 3211 of the iron core 321 generate a magnetic field to form magnetic force with the magnet assembly 32, the upper cover 311 is driven to rotate, the motor shaft 313 is driven to rotate in the central shaft 332, the stator assembly 32 realizes three-phase commutation through the control of the circuit board 6, the upper cover 311 rotates evenly, and the power output of the motor is stable. Under the drive of the upper cover 311, the traveling wheels 2 rotate to drive the purifier body 1 to move,

the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A mobile air purifier is characterized by comprising a purifier body, a traveling wheel and a direct drive motor, wherein the direct drive motor comprises a rotor assembly and a stator assembly, the rotor assembly is arranged outside the stator assembly, the traveling wheel is connected with the rotor assembly, and the stator assembly is connected with the bottom of the purifier body; when the purifier is powered on to work, the rotor assembly rotates outside the stator assembly under the action of electromagnetic force to drive the travelling wheels to rotate and drive the purifier body to move.

2. The mobile air purifier of claim 1, wherein the rotor assembly comprises an upper cover and a magnet assembly, the upper cover is disposed outside of the stator assembly, the magnet assembly is mounted on an inner wall of the upper cover, and the road wheel is mounted outside of the upper cover.

3. The mobile air cleaner of claim 2, wherein the upper cover includes a top surface and a sidewall, the top surface being disposed at an upper end of the sidewall, the top surface being in a clearance fit with the stator assembly.

4. The mobile air cleaner of claim 3, wherein the magnet assembly is attached to the sidewall or is mounted in a mounting groove of the sidewall.

5. The mobile air cleaner of any one of claims 2-4, wherein the rotor assembly further comprises a motor shaft, one end of the motor shaft being coupled to a top surface of the upper cover, the upper cover being coupled to the stator assembly via the motor shaft.

6. The mobile air purifier of claim 5, wherein the direct drive motor further comprises a base, the upper cover is mounted on the base, and the stator assembly is mounted in a cavity formed by the upper cover and the base.

7. The mobile air purifier of claim 6 wherein the base includes a bottom surface and a central shaft, the central shaft being secured to the bottom surface, the stator assembly being sleeved over the central shaft.

8. The mobile air cleaner of claim 7, wherein a bearing chamber is formed in the center of the central shaft, and the motor shaft is movably coupled to the bearing chamber by a bearing.

9. The mobile air cleaner according to claim 7 or 8, wherein the stator assembly includes an iron core and a copper wire, the copper wire is wound around the iron core, the iron core is sleeved on the central shaft, and the number of magnetic poles of the magnet assembly is greater than the number of tooth slots of the iron core.

10. The mobile air purifier of claim 1, wherein the direct drive motor further comprises a circuit board for controlling commutation, the circuit board being electrically connected to the stator assembly, the circuit board having three terminals, the stator assembly having three terminals, the terminals being connected to the terminals in a one-to-one correspondence.