CN219107215U

CN219107215U - Motor and household appliance

Info

Publication number: CN219107215U
Application number: CN202223609047.7U
Authority: CN
Inventors: 庄志鹏; 李文瑞; 钱成; 郑礼成; 吴迪
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-30
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a motor and a household appliance, wherein the motor comprises a stator and a rotor, the stator comprises a machine base and a stator assembly, the machine base is provided with a containing cavity, and the stator assembly is arranged in the containing cavity; the rotor is rotatably arranged in the accommodating cavity; the accommodating cavity is positioned in the middle of the base, a sound insulation cavity is further formed in the circumferential direction of the base, and the sound insulation cavity surrounds the accommodating cavity. According to the technical scheme, the sound insulation cavity is formed in the circumferential direction of the base, the base body and the air in the sound insulation cavity form a multi-layer structure, at the moment, reflection and attenuation absorption characteristics of sound waves penetrating through different media are utilized, so that the improvement of sound insulation quantity can be realized on the basis of not increasing excessive materials, and high-frequency noise radiated by the motor is effectively reduced. In addition, this solution has the advantage that no additional parts are required, nor are additional processes required in production, compared to an additional housing.

Description

Motor and household appliance

Technical Field

The utility model relates to the technical field of motors, in particular to a motor and a household appliance.

Background

High-power permanent magnet brushless motors are widely applied to the field of household appliances at present, but high-power density also brings the problem of high-frequency noise of the motors. Existing solutions are mainly to add an additional housing and to absorb sound absorbing material to reduce high frequency noise. The noise is reduced from the path, but the use of the shell and the sound absorbing material not only can increase the production difficulty and cost of the motor, but also can not ensure the reliability in the transportation and use processes, and has the same problem in the aspect of matching with the load of a customer, so that the motor is difficult to enter into practical application in the field of household appliances.

Disclosure of Invention

The utility model mainly aims to provide a motor, and aims to solve the problem of high-frequency noise of the motor.

To achieve the above object, the present utility model provides an electric motor comprising:

the stator comprises a base and a stator assembly, wherein the base is provided with a containing cavity, and the stator assembly is arranged in the containing cavity;

the rotor is rotatably arranged in the accommodating cavity;

the sound insulation cavity is arranged in the middle of the base, and is arranged around the base.

In one embodiment, the stand comprises a base body and an end cover, wherein the base body is provided with a cavity with one end arranged in an open way, and the end cover is used for closing the open way to form the accommodating cavity; the sound insulation cavity is arranged on the base.

In an embodiment, the number of the sound insulation cavities is multiple, and the multiple sound insulation cavities are arranged at intervals along the circumferential direction of the base.

In an embodiment, the plurality of sound insulation cavities are uniformly distributed at intervals along the circumferential direction of the base.

In one embodiment, the sound insulation cavity is provided with at least one opening.

In one embodiment, at least one surface of the inner wall surface of the sound insulation cavity is provided with an uneven surface.

In an embodiment, at least one surface of the inner wall of the sound insulation cavity is provided with a protruding portion, and the outline of the protruding portion is a curve.

In one embodiment, the protruding portion extends along the length direction of the inner wall of the sound insulation cavity; the quantity of protruding portion is a plurality of, and a plurality of protruding portion is followed the width direction in sound insulation chamber arranges.

In an embodiment, there is a plane perpendicular to the axial direction of the housing, the plane being in the cross-sectional pattern taken by the housing; the area of the seat body is S0, the area of the accommodating cavity is S1, the area of the sound insulation cavity is S2,

the method meets the following conditions: s2- (S0-S1) 50%.

The utility model also provides a household appliance comprising the motor according to any one of the embodiments.

According to the technical scheme, the sound insulation cavity is formed in the circumferential direction of the base, the base body and the air in the sound insulation cavity form a multi-layer structure, at the moment, reflection and attenuation absorption characteristics of sound waves penetrating through different media are utilized, so that the improvement of sound insulation quantity can be realized on the basis of not increasing excessive materials, and high-frequency noise radiated by the motor is effectively reduced. In addition, this solution has the advantage that no additional parts are required, nor are additional processes required in production, compared to an additional housing.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of a motor according to the present utility model;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic view of the shape and structure of an embodiment of the acoustic chamber of the present utility model;

FIG. 4 is a schematic view of another embodiment of the motor of the present utility model;

FIG. 5 is a schematic view of the shape and structure of another embodiment of the acoustic chamber of the present utility model;

fig. 6 is a schematic structural view of a further embodiment of the motor of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Stator	120	Stator assembly
110	Stand base	130	Raised portion
				101	Accommodating chamber	200	Rotor
102	Sound insulation cavity	210	Rotating shaft
				111	Seat body	220	Rotor core
112	End cap	10	Motor with a motor housing

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a motor.

In an embodiment of the present utility model, as shown in fig. 1 to 6, the motor 10 includes a stator 100 and a rotor 200, the stator 100 includes a housing 110 and a stator assembly 120, the housing 110 has a receiving cavity 101, and the stator assembly 120 is disposed in the receiving cavity 101; a rotor 200 rotatably provided in the accommodating chamber 101; the accommodating cavity 101 is located in the middle of the stand 110, a sound insulation cavity 102 is further provided in the circumferential direction of the stand 110, and the sound insulation cavity 102 is disposed around the accommodating cavity 101.

Generally, the stator 100 includes a housing 110 and a stator assembly 120, the stator assembly 120 may be a stator core, the stator core is in a ring shape, and the housing 110 may be formed by injection molding on an outer side of the stator core, that is, the stator core and the housing are integrally formed. The rotor 200 includes a rotor core 220 and a rotating shaft, the rotor core 220 is wound around the periphery of the rotating shaft 210, the rotor core 220 is rotatably assembled on the inner side of the stator core, and an air gap is formed between the stator core and the rotor core 220, so that the motor 10 is formed, and the structure is stable and reliable. The air gap is a gap between the stator core and the rotor core 220, and the size of the air gap is set according to the actual use requirement of the motor 10, where the stator core includes a yoke portion and a plurality of teeth portions that are spaced around the yoke portion, and the teeth portions are uniformly distributed along the circumference of the stator core, and the teeth portions are wound with coils to form windings.

The number of the sound insulation cavities 102 may be one or more. In the embodiment where the sound-proof cavity 102 is one, the sound-proof cavity 102 may be an annular groove or an annular closed cavity, and it should be understood that in the embodiment of the annular closed cavity, a process hole is generally required to be provided so that the sound-proof cavity 102 may be machined. Of course, when the number of the sound insulation chambers 102 is one, the sound insulation chambers may be chambers of other shapes.

In the embodiment where the number of the sound-insulating cavities 102 is plural, the sound-insulating cavities 102 may be in a groove shape, a through hole shape or may be in a ring-shaped airtight cavity, and the sound-insulating cavities 102 may be arranged in various manners, for example, the sound-insulating cavities 102 may be arranged randomly, may be arranged at intervals in a certain direction, or may be arranged in an array, etc., which is not illustrated herein, so as to form the sound-insulating cavities 102 and reduce noise.

Illustratively, a plurality of the sound-deadening chambers 102 are arranged at intervals along the circumferential direction of the housing 110. Preferably, in order to reduce the processing difficulty and improve the sound insulation effect of the sound insulation cavity 102, a plurality of the sound insulation cavities 102 are uniformly spaced along the circumferential direction of the base 110.

The sound-insulating chamber 102 may have a regular shape such as a circular shape, an elliptical shape, a square shape, or a trapezoid shape, or may have other irregular shapes, and the shape of the sound-insulating chamber 102 is usually a regular shape for convenience of processing.

The sound insulation cavity 102 may be a cavity, or the cavity may be filled with a sound insulation material. The material of the housing 110 is typically plastic, also referred to in industry terms as a plastic enclosure. In addition, in the background art, the motor is based on the improvement of the high-power permanent magnet brushless motor, however, the motor similar to the stator structure of the high-power permanent magnet brushless motor can use the technical scheme of the utility model and is also within the protection scope of the utility model.

According to the technical scheme, the sound insulation cavity 102 is formed in the circumferential direction of the base 110, and the base 110 body and the air in the sound insulation cavity 102 form a multi-layer structure, so that reflection and attenuation absorption characteristics of sound waves penetrating through different media are utilized, and the improvement of sound insulation capacity can be realized on the basis of not increasing excessive materials, and high-frequency noise radiated by the motor 10 is effectively reduced. In addition, this solution has the advantage that no additional components and no additional steps are required in the production compared to an additional housing.

In one embodiment, the stand 110 includes a stand body 111 and an end cover 112, the stand body 111 has a cavity with one end open, and the end cover 112 is used for closing the open end to form the accommodating cavity 101; the sound insulation chamber 102 is disposed on the base 110.

In another embodiment, at least one end of the sound insulation cavity 102 is provided with an opening for facilitating processing and production and reducing process difficulty.

In a preferred embodiment, at least one surface of the inner wall of the sound-proof cavity 102 is provided with a rugged shape in order to further enhance the sound-proof effect of the sound-proof cavity 102. In this way, the uneven inner wall surface is prevented from reflecting and attenuating the absorption sound wave, thereby reducing the high-frequency noise radiated from the motor 10 and further improving the sound insulation effect of the sound insulation cavity 102. The inner wall of the sound-insulating chamber 102 may be any surface, and preferably, the sound-insulating chamber 102 is provided with an inner wall surface which is far from the accommodating chamber 101 and is called a rugged shape, and the sound-insulating effect is optimal.

Referring to fig. 3, an exemplary embodiment of the sound insulation chamber 102 includes a protrusion 130 on at least one inner wall, and a contour line of the protrusion 130 is curved.

For example, referring to fig. 1 and 3, the protruding portion 130 extends along the length direction of the inner wall of the sound insulation cavity 102; the number of the protruding portions 130 is plural, and the plurality of protruding portions 130 are arranged in the width direction of the sound insulation chamber 102.

In order to ensure a sufficient sound-insulating effect, in one embodiment, there is a plane perpendicular to the axial direction of the seat 111, said plane being in the cross-sectional pattern taken by the seat 111; the area of the base 111 is S0, the area of the accommodating cavity 101 is S1, and the area of the sound insulation cavity 102 is S2, which satisfies the following conditions: s2- (S0-S1) 50%. That is, the base 111 is provided with the sound insulation chamber 102 on the base body in which the accommodation chamber 101 is recessed. The open area of the sound-deadening chamber 102 is greater than 50% of the base body, thereby ensuring sufficient sound-deadening effect.

For example, assuming that the value of S0 is 100 square centimeters and the value of S1 is 60 square centimeters, the possible value of S2 is between 20 square centimeters and 40 square centimeters, and of course, the sound insulation cavity 102 is opened while the structural strength of the base 111 needs to be ensured, so that the value of S2 is generally between 20 square centimeters and 30 square centimeters, specifically, S2 includes but is not limited to 20 square centimeters, 22 square centimeters, 24 square centimeters, 26 square centimeters, 28 square centimeters, and 30 square centimeters. It should be appreciated that the plane here needs to be cut out of the plane with the acoustic baffle cavity 102.

The utility model also provides a household appliance, which comprises the motor 10, wherein the specific structure of the motor 10 refers to the embodiment, and as the household appliance adopts all the technical schemes of all the embodiments, the household appliance at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated here.

The household appliance may be an air conditioner, a fan, etc., for example, taking the air conditioner as an example, the indoor unit of the air conditioner adopts the motor 10 of the above embodiment to drive the wind wheel to rotate, so as to realize air supply of the indoor unit.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An electric machine, comprising:

the rotor is rotatably arranged in the accommodating cavity;

2. The motor of claim 1 wherein said housing includes a housing having a cavity with an opening at one end and an end cap for closing said opening to form said receiving cavity; the sound insulation cavity is arranged on the base.

3. A motor as claimed in claim 2, wherein the number of said sound-deadening chambers is plural, and a plurality of said sound-deadening chambers are arranged at intervals along the circumferential direction of said housing.

4. A motor as claimed in claim 3, wherein a plurality of said sound-deadening chambers are arranged at regular intervals in the circumferential direction of said housing.

5. An electric machine as claimed in claim 2, characterized in that the sound-insulating chamber is provided with an opening at least one end.

6. An electric motor according to claim 2, wherein at least one of said sound-deadening chambers has an inner wall surface that is provided with irregularities.

7. An electric motor according to claim 6, wherein at least one of the sound-deadening chambers has a convex portion provided on an inner wall thereof, and a contour line of the convex portion is curved.

8. The motor of claim 7, wherein the boss is extended along a length direction of the sound-deadening chamber inner wall; the quantity of protruding portion is a plurality of, and a plurality of protruding portion is followed the width direction in sound insulation chamber arranges.

9. An electric machine as claimed in any one of claims 2 to 8, characterized in that there is a plane perpendicular to the axial direction of the housing, said plane being in a cross-sectional pattern taken on the housing; the area of the seat body is S0, the area of the accommodating cavity is S1, the area of the sound insulation cavity is S2,

the method meets the following conditions: s2- (S0-S1) 50%.

10. A household appliance comprising an electric motor as claimed in any one of claims 1 to 9.