CN215370292U - Air supply device and dust collector - Google Patents

Abstract

The application provides an air supply device and a dust collector. The air supply device comprises: a rotor having a shaft disposed along a central axis extending in a vertical direction; a stator arranged to face the rotor in a radial direction; an impeller disposed above the stator, fixed to the shaft, and rotatable about a central axis; and a diffuser disposed below the impeller and above the stator. The stator has: a stator core having a core back surrounding a central axis, and a plurality of teeth extending from the core back toward the central axis and arranged in a circumferential direction; an insulator covering at least a portion of the stator core; and a coil formed of a conductive wire wound around the tooth portion with an insulator interposed therebetween. The diffuser has: a base portion disposed below the impeller and extending in a direction intersecting the central axis; and stationary blades arranged radially outside the base and arranged in a circumferential direction; at least a portion of the insulator is secured directly to the diffuser. Thus, the air blowing device can be reduced in size and weight.

Description

Air supply device and dust collector

Technical Field

The embodiment of the application relates to the field of electromechanics, in particular to an air supply device and a dust collector.

Background

The vacuum cleaner can be divided into a vertical type, a horizontal type and a portable type according to the structure. The working principle of the dust collector is that an electric motor (motor) of the air supply device is utilized to drive blades to rotate at a high speed, air negative pressure is generated in a sealed shell, and dust is absorbed.

It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.

SUMMERY OF THE UTILITY MODEL

The inventors have found that, as an important component of a vacuum cleaner, reduction in size and weight of an air blower is an important research direction and object in the industry.

In order to achieve miniaturization and light weight of the air supply device or solve other problems, the embodiment of the application provides the air supply device and the dust collector.

According to an aspect of an embodiment of the present application, there is provided an air blowing device including:

a rotor having a shaft disposed along a central axis extending in a vertical direction;

a stator arranged to be radially opposed to the rotor;

an impeller disposed above the stator, fixed to the shaft, and rotatable about the central axis; and

a diffuser disposed below the impeller and above the stator,

the stator has:

a stator core having a core back portion surrounding the central axis, and a plurality of teeth portions extending from the core back portion toward the central axis and arranged in a circumferential direction;

an insulator covering at least a portion of the stator core; and

a coil formed of a conductive wire wound around the tooth portion with the insulator interposed therebetween;

the diffuser has:

a base portion disposed below the impeller and extending in a direction intersecting the central axis; and

stationary blades arranged radially outward of the base and arranged in a circumferential direction;

wherein at least a portion of the insulator is directly secured to the diffuser.

In some embodiments, the insulator has:

a tooth cover portion that covers at least a part of the tooth portion; and

and a 1 st pillar portion that is disposed radially outward of the tooth cover portion and extends upward relative to the tooth cover portion, the 1 st pillar portion being fixed to the diffuser.

In some embodiments, the core back has:

a 1 st region located radially outward of the teeth and extending in a direction perpendicular to an extending direction of the teeth; and

a 2 nd region extending from both circumferential ends of the 1 st region in a circumferential direction,

the 1 st pillar portion is disposed radially outward of the 1 st region, and at least a portion of the 1 st pillar portion is disposed radially outward of a circumscribed circle of the 2 nd region.

In some embodiments, a 1 st recess depressed upward is formed in a lower surface of the base portion of the diffuser, and an upper end portion of the 1 st pillar portion is received in the 1 st recess.

In some embodiments, a 1 st through hole penetrating in an axial direction is formed in the base portion of the diffuser, a 2 nd recessed portion recessed downward is formed in an upper end portion of the 1 st pillar portion, and the insulator and the diffuser are fixed by inserting screws into the 1 st through hole and the 2 nd recessed portion.

In some embodiments, a case extending in a direction intersecting the central axis is disposed below the stator, the insulator has a 2 nd column portion extending downward with respect to the hood portion, and a lower end portion of the 2 nd column portion is fixed to the case.

In some embodiments, a 2 nd through hole arranged radially outward of the 1 st column part and penetrating in an axial direction is formed in the 2 nd column part, a 3 rd through hole penetrating in the axial direction is formed in the housing, and the insulator and the housing are fixed by inserting screws into the 2 nd through hole and the 3 rd through hole.

In some embodiments, a 1 st bearing is fixed to a radially central portion of the diffuser, a 2 nd bearing is fixed to a radially central portion of the casing, and the shaft is supported by the 1 st bearing and the 2 nd bearing to be rotatable about the central axis.

In some embodiments, the insulator is insert molded with the core back.

In some embodiments, the air supply device further has:

a circuit board disposed below the stator and extending in a direction intersecting the central axis,

the insulator has a terminal cover portion disposed radially outside the tooth portion,

the circuit board and the lead wire are electrically connected by a terminal inserted into the terminal hood.

According to another aspect of the embodiments of the present application, there is provided a vacuum cleaner including the air supply device according to any one of the embodiments.

One of the beneficial effects of the embodiment of the application lies in: according to the air supply device of the embodiment of the application, at least one part of the insulating piece is directly fixed with the diffuser, and the traditional upper shell is not required to be separately configured, so that the air supply device can be miniaturized and lightened.

Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic view of an example of an air blowing device of an embodiment of the present application;

FIG. 2 is a schematic axial cross-section of the blower apparatus shown in FIG. 1;

FIG. 3 is a schematic view of an example of a stator of the air-moving device shown in FIG. 1;

FIG. 4 is a top view of the stator shown in FIG. 3;

FIG. 5 is a schematic view of an example of a diffuser of the air delivery device shown in FIG. 1;

FIG. 6 is a schematic view of the diffuser shown in FIG. 5 from another angle;

FIG. 7 is a top view of the diffuser shown in FIG. 5;

FIG. 8 is a bottom view of the diffuser shown in FIG. 5;

fig. 9 is a schematic view of an example of a casing of the air blowing device shown in fig. 1.

Detailed Description

The foregoing and other features of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the application are disclosed in detail as being indicative of some of the embodiments in which the principles of the application may be employed, it being understood that the application is not limited to the described embodiments, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.

In the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing different elements by reference, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.

In the embodiments of the present application, the singular forms "a", "an", and the like may include the plural forms and should be interpreted broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.

In the following description of the present application, for the sake of convenience of description, a direction parallel to a direction extending along the central axis O of the air blowing device is referred to as an "axial direction"; the direction from the motor toward the impeller is referred to as "above" or "upper side" or "axially one side"; the direction pointing from the impeller to the motor is referred to as "below" or "underside" or "axially other side"; a radial direction centered on the central axis O is referred to as a "radial direction"; the direction near the central axis O is referred to as "radially inward" or "inboard"; the direction away from the central axis O is referred to as "radially outward" or "outboard"; the direction around the center axis O is referred to as "circumferential direction". It should be noted that these are for convenience of illustration only, and do not limit the orientation of the air blowing device during use and manufacture.

Embodiments of the present application will be described below with reference to the drawings.

Embodiments of the first aspect

The embodiment of the application provides an air supply device.

Fig. 1 is a schematic view of an example of an air blowing device according to an embodiment of the present application, and fig. 2 is a schematic view of an axial cross section of the air blowing device shown in fig. 1. As shown in fig. 1 and 2, the air blowing device according to the embodiment of the present application includes:

a rotor 10 having a shaft 11 disposed along a central axis O extending in the vertical direction;

a stator 20 disposed to radially face the rotor 10;

an impeller 30 disposed above the stator 20, fixed to the shaft 11, and rotatable about a central axis O; and

and a diffuser 40 disposed below the impeller 30 and above the stator 20.

Fig. 3 is a schematic view of an example of the stator 20 of the air blowing device shown in fig. 1, and fig. 4 is a plan view of the stator 20 shown in fig. 3, showing a state in which the stator 20 is viewed from the axial direction side. As shown in fig. 3 and 4, in the embodiment of the present application, the stator 20 has:

a stator core 21 having a core back 211 surrounding the central axis O, and a plurality of teeth 212 extending from the core back 211 toward the central axis O and arranged in a circumferential direction;

an insulator 22 covering at least a part of the stator core 21; and

and a coil 23 formed of a conductive wire wound around the tooth portion 212 with the insulator 22 interposed therebetween.

In fig. 4, one coil 23 wound around the tooth portion 212 is omitted for the purpose of explanation of the tooth portion 212.

FIG. 5 is a schematic view of an example of a diffuser 40 of the air blowing device shown in FIG. 1; FIG. 6 is a schematic view of the diffuser 40 shown in FIG. 5 from another angle; FIG. 7 is a plan view of the diffuser 40 shown in FIG. 5, illustrating the diffuser 40 as viewed from the axial upper side, corresponding to the viewing position shown in FIG. 5; fig. 8 is a bottom view of the diffuser 40 shown in fig. 5, illustrating the diffuser 40 as viewed from the axial lower side, corresponding to the viewing position shown in fig. 6.

As shown in fig. 2 and 5 to 8, in the embodiment of the present application, the diffuser 40 includes:

a base portion 41 that is disposed below the impeller 30 and extends in a direction intersecting the center axis O; and

and stationary blades 42 arranged radially outward of the base 41 and arranged in the circumferential direction.

In the present embodiment, at least a portion of the insulator 22 is directly secured to the diffuser 40. Therefore, at least a part of the insulating member is directly fixed to the diffuser, and the blower can be reduced in size and weight without separately providing a conventional upper case.

In some embodiments, as shown in fig. 3 and 4, the insulator 22 has:

a tooth cover portion 221 that covers at least a part of the tooth portion 212; and

and a 1 st pillar portion 222 that is disposed radially outward of the tooth cover portion 221 and extends upward relative to the tooth cover portion 221, the 1 st pillar portion 222 being fixed to the diffuser 40.

In the above embodiment, the 1 st column portion 222 extends upward with respect to the tooth cover portion 221, that is, the axial upper end of the 1 st column portion 222 is located axially upward with respect to the tooth cover portion 221, and the insulator 22 is fixed to the diffuser 40 by the 1 st column portion 222. This ensures the axial distance between the coil 23 and the diffuser 40, and avoids interference.

In some embodiments, as shown in fig. 3 and 4, the core back 211 has:

a 1 st region 211-1 located radially outward of the teeth 212 and extending in a direction perpendicular to an extending direction of the teeth 212; and

and a 2 nd region 211-2 extending from both circumferential ends of the 1 st region 211-1 to the circumferential direction.

In the above embodiment, the 1 st pillar portion 222 is disposed radially outward of the 1 st region 211-1, and at least a portion of the 1 st pillar portion 222 is disposed radially outward of a circumscribed circle of the 2 nd region 211-2.

In the above embodiment, as shown in fig. 4, when the 1 st region 211-1 is linear as viewed in the axial direction, the 2 nd region 211-2 is curved as viewed in the axial direction, and the two 2 nd regions 211-2 on both sides in the circumferential direction of the 1 st region 211-1 are rounded, at least a part of the 1 st pillar portion 222 is disposed radially outside the rounded circumscribed circle. This enables the air blower to be reduced in size in the radial direction, which contributes to downsizing of the air blower.

The shape of the 1 st region 211-1 and the 2 nd region 211-2 viewed along the axial direction is merely illustrated, and the present application is not limited thereto, and for example, the 1 st region 211-1 may be curved when viewed along the axial direction, or the 2 nd region 211-2 may be linear when viewed along the axial direction, and the like.

In some embodiments, as shown in fig. 6 and 8, a 1 st recess 411 that is recessed upward is formed on the lower surface of the base portion 41 of the diffuser 40, and an upper end portion 223 (see fig. 3 and 4) of the 1 st pillar portion 222 is received in the 1 st recess 411. Thereby, the diffuser 40 and the insulator 22 can be circumferentially positioned.

In some embodiments, as shown in fig. 5 to 8, a 1 st through hole 412 that penetrates in the axial direction is formed in the base portion 41 of the diffuser 40, and as shown in fig. 3 and 4, a 2 nd recessed portion 224 that is recessed downward is formed in the upper end portion 223 of the 1 st pillar portion 22, and the insulator 22 and the diffuser 40 are fixed by inserting screws into the 1 st through hole 412 and the 2 nd recessed portion 224. Thereby, the diffuser 40 and the insulator 22 can be firmly fixed.

In some embodiments, as shown in fig. 1 and 2, a housing 50 extending in a direction intersecting the central axis O is disposed below the stator 20, and as shown in fig. 3 and 4, the insulating member 22 has a 2 nd column portion 225 extending downward with respect to the tooth cover portion 221, and a lower end portion of the 2 nd column portion 225 is fixed to the housing 50. This enables the case 50 and the insulator 22 to be firmly fixed.

In the above embodiment, as shown in fig. 3, the 2 nd pillar portion 225 may be disposed on the radial outer side of the 1 st pillar portion 222, or may be disposed at another position of the insulating member 22, which is not limited in the present application.

Fig. 9 is a schematic view of an example of a casing 50 of the air blowing device shown in fig. 1.

In some embodiments, as shown in fig. 3 and 4, a 2 nd through hole 226 disposed radially outward of the 1 st column part 222 and penetrating in the axial direction is formed in the 2 nd column part 225, and as shown in fig. 9, a 3 rd through hole 51 penetrating in the axial direction is formed in the housing 50, and the insulator 22 and the housing 50 are fixed by inserting screws into the 2 nd through hole 226 and the 3 rd through hole 51. This enables the chassis 50 and the insulator 22 to be fixed with high accuracy.

In some embodiments, as shown in fig. 2, a 1 st bearing 60 is fixed to a radially central portion of the diffuser 40, a 2 nd bearing 70 is fixed to a radially central portion of the casing 50, and the shaft 11 is supported by the 1 st bearing 60 and the 2 nd bearing 70 so as to be rotatable about the center axis O. Therefore, the axial interval between the two bearings can be enlarged, and the motor of the air supply device can rotate more stably.

In some embodiments, as shown in fig. 3 and 4, the insulator 22 is insert molded with the core back 211. This can improve the molding accuracy of the insulator 22 and the fixing accuracy of the insulator 22 and the diffuser 40.

In some embodiments, as shown in fig. 1 and 2, the air supply device of the embodiment of the present application further includes: as shown in fig. 3 and 4, the insulating member 22 includes a terminal cover portion 227 disposed radially outward of the tooth portion 212, and the circuit board 80 disposed below the stator 20 and extending in a direction intersecting the central axis O is electrically connected to the lead wires constituting the coil 23 by terminals inserted into the terminal cover portion 227. Thus, the circuit board 80 can be easily conducted to the lead by the terminal inserted into the terminal cover portion 227.

In the above embodiment, as shown in fig. 3 and 4, the tooth portion 212 and the terminal cover portion 227 are staggered in the radial direction, that is, the tooth portion 212 and the terminal cover portion 227 are not in the same radial direction. The present application is not limited thereto, as long as the terminal cover 227 is ensured to be located at the outer side of the tooth 212 in the radial direction, so that the wire wound around the tooth 212 can be inserted into the terminal cover 227 to connect the terminal.

It should be noted that, only the structure of the air blowing device related to the present application is described above, the air blowing device may also include other conventional structures, such as a cover 90, as shown in fig. 1 and 2, and specific reference may be made to the related art, and the description thereof is omitted here. It is also possible to add components not shown in fig. 1 to 9 or to reduce one or more components in fig. 1 to 9. As for other configurations and structures of the air blowing device, the related art can be referred to, and the description thereof is omitted here.

According to the air supply device of the embodiment of the application, at least one part of the insulating piece is directly fixed with the diffuser, and the traditional upper shell is not required to be separately configured, so that the air supply device can be miniaturized and lightened.

Embodiments of the second aspect

Embodiments of the second aspect of the present application provide an electrical product having the air supply device described in the embodiments of the first aspect. Since the structure of the air blowing device has been described in detail in the embodiment of the first aspect, the contents thereof are incorporated herein, and the description thereof is omitted here.

In the embodiment of the present application, the electric product is, for example, a sweeper, a vacuum cleaner, etc., and regarding other structures of the electric product, reference may be made to the related art, and a description thereof is omitted here.

The present application has been described in conjunction with specific embodiments, but it should be understood by those skilled in the art that these descriptions are intended to be illustrative, and not limiting. Various modifications and adaptations of the present application may occur to those skilled in the art based on the spirit and principles of the application and are within the scope of the application.

Preferred embodiments of the present application are described above with reference to the accompanying drawings. The many features and advantages of the embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the embodiments that fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the present application to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.

Claims (11)

1. An air blowing device includes:

a rotor having a shaft disposed along a central axis extending in a vertical direction;

a stator arranged to be radially opposed to the rotor;

an impeller disposed above the stator, fixed to the shaft, and rotatable about the central axis; and

a diffuser disposed below the impeller and above the stator,

the stator has:

a stator core having a core back portion surrounding the central axis, and a plurality of teeth portions extending from the core back portion toward the central axis and arranged in a circumferential direction;

an insulator covering at least a portion of the stator core; and

a coil formed of a conductive wire wound around the tooth portion with the insulator interposed therebetween;

the diffuser has:

a base portion disposed below the impeller and extending in a direction intersecting the central axis; and

stationary blades arranged radially outward of the base and arranged in a circumferential direction;

the method is characterized in that:

at least a portion of the insulator is directly secured to the diffuser.

2. The air supply device according to claim 1, wherein the insulating member has:

a tooth cover portion that covers at least a part of the tooth portion; and

and a 1 st pillar portion that is disposed radially outward of the tooth cover portion and extends upward relative to the tooth cover portion, the 1 st pillar portion being fixed to the diffuser.

3. The air supply device according to claim 2, wherein the core back portion includes:

a 1 st region located radially outward of the teeth and extending in a direction perpendicular to an extending direction of the teeth; and

a 2 nd region extending from both circumferential ends of the 1 st region in a circumferential direction,

the 1 st pillar portion is disposed radially outward of the 1 st region, and at least a portion of the 1 st pillar portion is disposed radially outward of a circumscribed circle of the 2 nd region.

4. The air supply arrangement of claim 2,

a 1 st recess recessed upward is formed in a lower surface of the base portion of the diffuser, and an upper end portion of the 1 st pillar portion is accommodated in the 1 st recess.

5. The air supply arrangement of claim 2,

a 1 st through hole penetrating in an axial direction is formed in the base portion of the diffuser,

a 2 nd recessed portion recessed downward is formed at an upper end portion of the 1 st pillar portion,

the insulator and the diffuser are fixed by inserting screws into the 1 st through hole and the 2 nd recess.

6. The air supply device according to any one of claims 2 to 5,

a housing extending in a direction intersecting the center axis is disposed below the stator,

the insulator has a 2 nd column part extending downward relative to the hood part, and a lower end part of the 2 nd column part is fixed to the housing.

7. The air supply arrangement of claim 6,

a 2 nd through hole arranged radially outward of the 1 st column part and penetrating in an axial direction is formed in the 2 nd column part,

a 3 rd through hole penetrating in the axial direction is formed on the housing,

the insulator and the housing are fixed by inserting screws into the 2 nd through hole and the 3 rd through hole.

8. The air supply arrangement of claim 6,

a 1 st bearing is fixed to a radially central portion of the diffuser,

a 2 nd bearing is fixed to a radial center portion of the housing,

the shaft is supported by the 1 st bearing and the 2 nd bearing so as to be rotatable about the center axis.

9. The air supply device according to any one of claims 1 to 5,

and the insulating part and the back of the iron core are formed by insert molding.

10. The air supply device according to any one of claims 1 to 5, further comprising:

a circuit board disposed below the stator and extending in a direction intersecting the central axis,

the insulator has a terminal cover portion disposed radially outside the tooth portion,

the circuit board and the lead wire are electrically connected by a terminal inserted into the terminal hood.

11. A vacuum cleaner, characterized in that it comprises an air supply device according to any one of claims 1 to 10.

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