WO2021147849A1

WO2021147849A1 - Low-noise efficient motor and vacuum cleaner

Info

Publication number: WO2021147849A1
Application number: PCT/CN2021/072680
Authority: WO
Inventors: 高春超
Original assignee: 追创科技(苏州)有限公司
Priority date: 2020-01-21
Filing date: 2021-01-19
Publication date: 2021-07-29

Abstract

The present invention relates to a low-noise efficient motor and a vacuum cleaner. The low-noise efficient motor comprises a motor component. The motor component comprises a housing, a stator component, and a moving impeller provided in the housing. The moving impeller and the housing define an air duct. The low-noise efficient motor is further provided with a diffuser component matching the air duct. The diffuser component comprises at least two groups of diffuser groups provided vertically in the axis direction of the housing. Each group of diffuser groups comprises several diffusers provided around the circumferential direction of the housing. Diffusers in a secondary diffuser group in the adjacent diffuser groups are configured to be used for separating the air guided introduced by an upper diffuser group. The at least two groups of diffuser groups and the stator component are provided at the same side of the moving impeller. The low-noise efficient motor and the vacuum cleaner can greatly reduce the noise generated by the motor and improve the efficiency of the motor while keeping other performances unchanged.

Description

Low-noise and high-efficiency motor and vacuum cleaner

Technical field

The invention relates to a low-noise and high-efficiency motor and a vacuum cleaner, belonging to the field of electric tools.

Background technique

The noise and efficiency of the high-speed motor are the main problems at present. However, it is difficult to improve the efficiency of the high-speed vacuum cleaner motor in the prior art. Moreover, under the premise of keeping other performance unchanged, the noise problem of the motor is not very ideal, especially in household electric tools such as vacuum cleaners and other equipment.

Summary of the invention

The purpose of the present invention is to provide a low-noise and high-efficiency motor and vacuum cleaner, which can greatly reduce the noise generated by the motor and improve the efficiency of the motor while keeping other performance unchanged.

In order to achieve the above objective, the present invention provides the following technical solutions: a low-noise and high-efficiency motor, including a motor assembly, the motor assembly includes a wind cover, a stator assembly and a moving impeller arranged in the wind cover, the moving impeller and The windshield defines an air duct; the low-noise and high-efficiency motor is also provided with a guide vane assembly that matches the air duct. The guide vane assembly includes at least two sets of guide vanes arranged up and down along the axis of the windshield. Each of the guide vane groups includes a plurality of guide vanes arranged circumferentially around the windshield; among the adjacent guide vane groups, the guide vanes in the second group of guide vane groups are configured to separate the guide vanes from the upper group For the wind introduced by the guide vane group, at least two sets of the guide vane group and the stator assembly are arranged on the same side of the moving impeller.

Further, the number of guide vanes in the secondary guide vane group is greater than the number of guide vanes in the upper guide vane group.

Further, on the circumferential plane of the windshield, adjacent to the guide vane assembly, at least part of the guide vanes in the secondary group of guide vanes are arranged in two adjacent ones of the upper group of guide vanes. Between the guide vanes.

Further, on the circumferential plane of the windshield, one or more guide vanes in the secondary guide vane group are provided between two adjacent guide vanes in the upper guide vane group.

Further, the guide vane assembly includes a first-level guide vane group, a second-level guide vane group, and a third-level guide vane group that are sequentially arranged from top to bottom along the axial direction of the wind hood; On a plane, two adjacent guide vanes in the first-level guide vane group are provided with two guide vanes in the second-level guide vane group, and two adjacent guide vanes in the second-level guide vane group A guide vane in the three-level guide vane group is arranged between the vanes.

Further, a plurality of blades are provided on the moving impeller to guide the gas outside the wind shield into the air duct.

Further, the motor assembly further includes a rotor assembly, the rotor assembly is rotatably mounted on the stator assembly, and the moving impeller is connected to the stator assembly and arranged on the wind cover.

Further, the low-noise and high-efficiency motor further includes a support frame, and the wind cover is installed on the support frame.

Further, the support frame includes a frame body and positioning ribs arranged on the frame body, and a bearing for assembling the rotor assembly is provided on the frame body.

Further, the low-noise and high-efficiency motor further includes a capacitor and a circuit board electrically connected to the motor assembly, and the capacitor and the circuit board are arranged at the other end of the low-noise and high-efficiency motor relative to the windshield, and, The capacitor and the circuit board are arranged at the wind outlet of the guide vane assembly.

The present invention also provides a vacuum cleaner, which includes the low-noise and high-efficiency motor.

The present invention provides the following technical solutions: a high heat dissipation motor, including:

A motor assembly, the motor assembly including a rotor assembly and a bearing matched with the rotor assembly;

A support frame for fixing at least part of the motor assembly, the support frame includes a bearing seat for mounting the bearing and a number of strengthening mechanisms arranged on the bearing seat, at least one of the strengthening mechanisms is provided with unevenness structure.

Further, the support frame includes a frame body, the frame body includes the bearing seat arranged in the middle and an annular frame arranged on the outer periphery of the bearing seat, and the strengthening mechanism connects the bearing seat and the annular frame.

Further, there are hollow areas between adjacent reinforcement mechanisms, each of the reinforcement mechanisms has two opposite surfaces facing the area of the hollow area, and the concave-convex structure is provided on the opposite surfaces.

Further, on each of the reinforcing mechanisms, the concave-convex structure is alternately arranged on the two opposing surfaces.

Further, the concave-convex structure is a circular groove.

Further, a plurality of the reinforcement mechanisms are evenly arranged along the circumferential direction of the bearing housing.

Further, the reinforcing mechanism is a reinforcing rib, and the reinforcing mechanism is made of aluminum alloy material.

Further, the motor assembly further includes a stator assembly and an impeller assembly, the rotor assembly is rotatably mounted on the stator assembly, and the impeller assembly is connected to the rotor assembly and arranged on a windshield.

Further, the high heat dissipation motor further includes a capacitor and a circuit board electrically connected to the motor assembly, and the capacitor and the circuit board are arranged at the other end of the high heat dissipation motor relative to the windshield.

Compared with the prior art, the beneficial effect of the present invention is that the low-noise and high-efficiency motor and vacuum cleaner of the present invention divide the wind introduced into the motor by arranging multiple sets of guide vane groups arranged in accordance with the air duct of the motor, so that the wind introduced into the motor can be separated by each The wind of the guide vanes in the group of guide vanes gradually decreases, so that the wind of the motor is buffered, so as to achieve the purpose of noise reduction, and at the same time, it can improve the efficiency of the motor. Therefore, the low-noise and high-efficiency motor and vacuum cleaner can greatly reduce the noise generated by the motor and improve the efficiency of the motor while keeping other performance unchanged.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it in accordance with the content of the description, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Description of the drawings

1 and 2 are schematic diagrams of the structure of the low-noise and high-efficiency motor shown in the first embodiment of the present invention;

Fig. 3 is a schematic diagram of the working principle of the guide vane assembly in the low-noise and high-efficiency motor shown in Fig. 1;

Fig. 4 is a schematic diagram of the structure of the support frame in the motor shown in the second embodiment of the present invention.

Detailed ways

The specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

It should be noted that the terms "upper", "lower", "left", "right", "inner", "outer" and other terms in the present invention are only used to describe the present invention with reference to the drawings, and are not used as limiting terms.

Example one

1 to 3, the low-noise and high-efficiency motor shown in a preferred embodiment of the present invention includes a housing 1 and a motor assembly at least partially disposed in the housing 1, and the housing 1 is formed by splicing various regions In this embodiment, the housing 1 is formed by the outer peripheral structure of the windshield 2 and the guide vane assembly 4. Wherein, the motor assembly includes a wind cover 2 and a moving impeller 3 arranged in the wind cover 2. The moving impeller 3 and the wind cover 2 define wind. Specifically, the moving impeller 3 is provided with several blades 31, used to introduce the air outside the wind shield 2 into the air duct 10 along the blade 31. The housing 1 is also provided with a guide vane assembly 4 arranged in conjunction with the air duct 10. The guide vane assembly 4 includes at least two groups of guide vanes arranged up and down along the axial direction of the wind hood 2. The guide vane group includes a plurality of guide vanes arranged circumferentially around the wind cover 2, and the guide vane group and the stator assembly 5 are arranged on the same side of the moving impeller 3. Taking FIG. 2 as an example, the linear direction of A is the axial direction of the wind hood 2, and the direction B is the circumferential direction of the wind hood 2. In addition, in the adjacent guide vane groups, the guide vanes in the secondary guide vane group are configured to separate the wind introduced from the upper guide vane group, so as to achieve the purpose of gradually decreasing the wind passing through each group of guide vane groups. , So as to achieve the noise reduction of the motor.

In this embodiment, three groups of guide vane groups are provided on the circumferential plane of the windshield 2, from top to next in the axial direction: a first-level guide vane group 41, a second-level guide vane group 42 and a third-level guide vane Group 43; Of course, in other embodiments, two or more guide vane groups can also be provided. In the present invention, in the two adjacent guide vane groups, the guide vane group set up above is the upper guide vane group, and the lower one is the secondary guide vane group, in order to achieve the purpose of gradually decreasing the wind passing through each group of guide vane groups. , On the circumferential plane of the windshield 2, at least part of the guide vanes in the secondary guide vane group are arranged between two adjacent guide vanes in the upper guide vane group; preferably, the secondary guide vane group All the guide vanes in the leaf group are arranged between two adjacent guide vanes in the upper group of guide vanes. At the same time, preferably, the number of guide vanes in the secondary guide vane group is greater than the number of guide vanes in the upper guide vane group.

In this embodiment, two adjacent first-level guide vanes 411 in the first-level guide vane group 41 are provided with two second-level guide vanes 421 in the second-level guide vane group 42. A third-level guide vane 431 in the third-level guide vane group 43 is provided between two adjacent second-level guide vanes 421 in the first-level guide vane group 42. Preferably, the guide vanes in each group of guide vane groups are uniform set up. As shown in Figure 3, when the external air is introduced from the rotor 3 to the air duct 10, the formed wind is first evenly separated in the first-level guide vanes 411, and then the wind between two adjacent first-level guide vanes 411 The two secondary guide vanes 421 arranged in between are equally divided into three parts, and then the wind between two adjacent secondary guide vanes 421 is divided into two parts by the three-stage guide vane 431 arranged in between to lead out the shell. 1. Therefore, the discharged wind is much smaller than the wind introduced into the housing 1, which can significantly improve the noise in the motor running state. It is true that in other embodiments, the number and arrangement of guide vanes in each guide vane group can be selected according to actual conditions.

In this embodiment, the motor assembly further includes a stator assembly 5 and a rotor assembly 6. The rotor assembly 6 is rotatably mounted on the stator assembly 5, and the moving impeller 3 is connected to the stator assembly 5 and is arranged at all. Said on the wind cover 2. The housing 1 is also provided with a support frame 7 having an annular frame body 71 and positioning ribs 72 connecting the frame body 71 and the housing 1, and a bearing 73 is provided in the middle of the frame body 71. The windshield 2 is installed on the support frame 7, and the rotor assembly 6 is transferred to the bearing 73 and connected to the stator assembly 5 in transmission.

In this embodiment, the low-noise and high-efficiency motor further includes a capacitor 8 and a circuit board 9 electrically connected to the motor assembly, and the capacitor 8 and the circuit board 9 are disposed on the housing relative to the windshield 2. The other end of 1 and keep it outside. The wind derived from the three-stage guide vane group 43 blows on the capacitor 8 and the circuit board 9 to facilitate heat dissipation.

The low-noise and high-efficiency motor of the present invention can also significantly enhance the efficiency of the motor by improving its air guiding effect. Please refer to Table 1. The applicant has found through multiple experiments that the efficiency of the motor can be increased by setting the first-level guide vane group, the second-level guide vane group and the third-level guide vane group.

Table 1

Example two

The low-noise and high-efficiency motor of this embodiment is basically the same as the first embodiment, and the difference lies in the structure of the support frame 2-1. Specifically, please refer to Figure 4. As shown in the figure, the support frame 2-1 of this embodiment includes a bearing seat 2-11 for mounting the bearing 2-2 and a bearing seat 2-11 arranged on the bearing seat 2-11. A number of strengthening mechanisms 2-12, of which at least one of the strengthening mechanisms 2-12 is provided with a concave-convex structure 2-122. Preferably, all the reinforcement mechanisms 2-12 are provided with a concave-convex structure 2-122 to facilitate heat dissipation of the bearing 2-2.

Specifically, in this embodiment, the support frame 2-1 includes a support body 2-13, and the support body 2-13 includes the bearing seat 2-11 arranged in the middle and the bearing seat 2 -11 ring frame 2-14 on the outer circumference, and the reinforcing mechanism 2-12 connects the bearing seat 2-11 and the ring frame 2-14. There are hollow areas 2-10 between the adjacent strengthening mechanisms 2-12. In this embodiment, the number of strengthening mechanisms 2-12 is 9, and the nine strengthening mechanisms 2-12 are along the circumference of the bearing seat 2-11. Set evenly in the direction. Each of the reinforcing mechanisms 2-12 has two opposite surfaces 2-121 arranged facing the area of the hollowed-out area 2-10, and the concave-convex structure 2-122 is arranged on the opposite surface 2-121. Preferably, on each of the reinforcing mechanisms 2-12, the concave-convex structure 2-122 is alternately arranged on the two opposing surfaces 2-121, that is, in a wave shape. In addition, the concave-convex structure 2-122 is preferably a circular groove. By adopting the circular groove shape, the contact area with the air can be greatly increased to increase the heat dissipation efficiency. A total of 9 circular grooves are provided on the two opposite surfaces 2-121 of each of the reinforcing mechanisms 2-12. Of course, in other embodiments, the positions and numbers of the reinforcing mechanisms 2-12 and the concave-convex structure 2-122 The shape and quantity can be selected according to the actual situation.

In this embodiment, the reinforcing mechanism 2-12 is a reinforcing rib, and the reinforcing mechanism 2-12 is made of aluminum alloy material, so that it has good thermal conductivity and a better shock absorption effect.

Please refer to the attached drawings. After experimentation, it is found that compared with the existing support frame 2-1, the use of the support frame 2-1 of this embodiment can reduce the temperature of the bearing 2-2 by more than 6°.

In this embodiment, a reinforcement mechanism is provided on the bearing seat, and a concave-convex structure is provided on the reinforcement mechanism to increase the contact area with the air, which can effectively dissipate the heat emitted by the bearing and reduce the work of the bearing at a lower cost. Temperature, increase the life of the bearing, thereby increasing the life of the motor.

The low-noise and high-efficiency motor of the present invention can be applied to household electric tools such as fans and vacuum cleaners.

The present invention also provides a vacuum cleaner, which includes the low-noise and high-efficiency motor shown in the previous embodiment. The other structures are all the prior art and will not be described here.

To sum up: the low-noise and high-efficiency motor and vacuum cleaner of the present invention divide the wind introduced into the motor housing by arranging multiple sets of guide vane groups arranged in accordance with the air duct of the motor, so that the guide vane group in each group can pass through the guide vane group. The wind of the leaves gradually decreases, so that the wind of the motor is buffered, so as to achieve the purpose of noise reduction, and at the same time, it can improve the efficiency of the motor. Therefore, the low-noise and high-efficiency motor and vacuum cleaner can greatly reduce the noise generated by the motor and improve the efficiency of the motor while keeping other performance unchanged.

In addition, by providing a reinforcement mechanism on the bearing seat and a concave-convex structure on the reinforcement mechanism to increase the contact area with the air, the heat emitted by the bearing can be effectively discharged at a lower cost to reduce the operating temperature of the bearing , Improve the life of the bearing, thereby increasing the life of the motor.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

A low-noise and high-efficiency motor, comprising a motor assembly, the motor assembly including a wind cover (2), a stator assembly (5), and a moving impeller (3) arranged in the wind cover (2). The moving impeller ( 3) An air duct (10) is defined with the wind shield (2); it is characterized in that the low-noise and high-efficiency motor is also provided with a guide vane assembly (4) that is arranged in accordance with the air duct, and the guide vane assembly (4) It includes at least two sets of guide vanes arranged up and down along the axial direction of the wind shield (2), and each set of the guide vanes includes a plurality of guide vanes arranged around the circumference of the wind shield (2); at least two The guide vane group and the stator assembly (5) are arranged on the same side of the moving impeller (3).
The low-noise and high-efficiency motor according to claim 1, wherein the number of guide vanes in the secondary guide vane group is greater than the number of guide vanes in the upper guide vane group.
The low-noise and high-efficiency motor according to claim 2, characterized in that, on the circumferential plane of the windshield (2), a guide vane is provided between two adjacent guide vanes in the upper guide vane group. Or a plurality of guide vanes in the sub-group guide vane group.
The low-noise and high-efficiency motor according to claim 1, wherein the guide vane assembly (4) comprises a first-stage guide vane group (41) arranged in order from top to bottom along the axial direction of the wind shield (2). ), the second-level guide vane group (42) and the third-level guide vane group (43); wherein the first-level guide vane group (41), the second-level guide vane group (42) and the third-level guide vane The number of guide vanes in the group (43) increases sequentially.
The low-noise and high-efficiency motor according to claim 1, characterized in that the moving impeller (3) is provided with a plurality of blades for introducing the gas outside the wind shield (2) to the air duct (10). )middle.
The low-noise and high-efficiency motor according to claim 1, wherein the motor assembly further comprises a rotor assembly (6), the rotor assembly (6) is rotatably mounted on the stator assembly (5), and the The moving impeller (3) is connected with the stator assembly (5) and is arranged on the wind cover (2).
The low-noise and high-efficiency motor according to claim 6, characterized in that the low-noise and high-efficiency motor further comprises a support frame (7), and the wind shield (2) is mounted on the support frame (7).
The low-noise and high-efficiency motor according to claim 7, characterized in that the support frame (7) comprises a frame body (71) and positioning ribs (72) arranged on the frame body (71), and the frame The body (71) is provided with a bearing (73) for assembling the rotor assembly (6).
The low-noise and high-efficiency motor of claim 1, wherein:

The motor assembly includes a rotor assembly (6) and a bearing (2-2) matched with the rotor assembly (6);

A support frame (2-1) for fixing at least part of the motor assembly, the support frame (2-1) includes a bearing seat (2-11) for installing the bearing (2-2) and a A plurality of strengthening mechanisms (2-12) on the bearing seat (2-11), at least one of the strengthening mechanisms (2-12) is provided with a concave-convex structure (2-122).
The low-noise and high-efficiency motor according to claim 9, characterized in that the support frame (2-1) includes a support body (2-13), and the support body includes the bearing seat (2- 11) and an annular frame (2-14) arranged on the outer periphery of the bearing seat (2-11), and the strengthening mechanism (2-12) connects the bearing seat (2-11) and the annular frame (2-14) ).
The low-noise and high-efficiency motor according to claim 9, characterized in that there are hollow areas (2-10) between adjacent strengthening mechanisms (2-12), and each strengthening mechanism (2-12) has Two opposite surfaces (2-121) arranged facing the hollow area (2-10), and the concave-convex structure (2-122) is arranged on the opposite surface (2-121).
The low-noise and high-efficiency motor according to claim 11, characterized in that, on each of the strengthening mechanisms (2-12), the concave-convex structure (2-122) is alternately arranged on the two opposing surfaces (2- 121) on.
The low-noise and high-efficiency motor according to claim 9 or 12, wherein the concave-convex structure (2-122) is a circular groove.
The low-noise and high-efficiency motor according to claim 9, characterized in that a plurality of said reinforcing mechanisms (2-12) are evenly arranged along the circumferential direction of said bearing housing (2-11).
A vacuum cleaner, characterized by comprising the low-noise and high-efficiency motor according to any one of claims 1 to 14.