CN111463919B

CN111463919B - Motor and compressor with same

Info

Publication number: CN111463919B
Application number: CN202010414162.5A
Authority: CN
Inventors: 王晶; 刘才; 赵素珍; 郑学良; 孙文娇; 陈华杰; 魏会军; 高明世
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-11-05
Anticipated expiration: 2040-05-15
Also published as: CN111463919A

Abstract

The invention provides a motor and a compressor with the same, wherein the motor comprises a stator iron core and a reinforcing member, the reinforcing member is connected with the stator iron core, and a plurality of through holes for introducing a refrigerant and lubricating oil are formed in the reinforcing member; the area of the cross section of the stator core in the radial direction is A, the total area of the cross sections of the through holes is E, and E/A is more than or equal to 2 and more than or equal to 0.3. The invention solves the problems of larger vibration noise and higher oil discharge rate of the compressor in the prior art.

Description

Motor and compressor with same

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a motor and a compressor with the motor.

Background

The problem of air conditioner noise is one of the most direct performance experiences, the compressor noise of an air conditioner external unit and the vibration noise of a shell caused by the vibration of the air conditioner external unit are main sources of outdoor noise, and the problems of electromagnetic vibration and noise of a compressor motor also become main concerns in the refrigeration and air conditioning industry. Besides directly influencing the experience performance of the air conditioner, the vibration and the noise of the compressor also influence the overall performance of the air conditioner, such as service life and operational reliability.

The motor is used as a core component of the compressor, the structural design of the motor directly influences the overall performance of the compressor, including the influence on the vibration noise of the compressor, the oil circulation rate, the energy efficiency of the compressor, the reliability of the compressor and the like, but the design of the stator rigidity and the stator flow area of the compressor motor are restricted mutually, in order to improve the user experience, the larger the rigidity of the motor is, the better the noise of the motor is, the larger the motor flow area is, the better the reliability requirement of the compressor is met, but increasing the flow area of the motor stator will reduce the stator rigidity of the motor, causing the motor vibration, noise, compressor vibration and noise, if reducing the motor noise and increasing the rigidity of the motor, the flow hole area of the stator needs to be reduced, however, the oil circulation rate of the compressor is reduced, so that the compressor with low noise and high oil circulation rate has become a research target of the industry.

The motor adopts a winding paint dipping technology to bond loose windings together, which can only improve the tightness of the windings, can not improve the structural rigidity of the stator, can not solve the noise caused by poor structural rigidity of the compressor, and can not improve the efficiency of the compressor.

Disclosure of Invention

The invention mainly aims to provide a motor and a compressor with the same, and aims to solve the problems that the compressor in the prior art is high in vibration noise and high in oil discharge rate.

In order to achieve the above object, according to an aspect of the present invention, there is provided a motor including a stator core and a reinforcing member, the reinforcing member being connected to the stator core, the reinforcing member having a plurality of through holes for passing a refrigerant and a lubricating oil therethrough; the area of the cross section of the reinforcing member in the radial direction of the stator core is A, the total area of the cross sections of the through holes in the radial direction is E, and E/A is larger than or equal to 2 and larger than or equal to 0.3.

Further, E/K is more than or equal to 7 and more than or equal to 2, wherein K is the pump body displacement of the compressor and the unit is cc.

Furthermore, the stator core is provided with a stator slot, a stator winding is arranged in the stator slot, the reinforcing member is arranged in the stator slot and wraps the outer surface of the stator winding, and the through hole is formed in the middle of the stator slot.

Further, E/A is not less than 1.5 and not less than 0.6.

Further, the reinforcement is provided to cover the groove wall surface of the entire stator groove.

Further, the stator slot is a plurality of, and at least one through-hole is formed in at least one stator slot of the plurality of stator slots.

Furthermore, the stator core is provided with a stator slot, a stator winding is arranged in the stator slot, the reinforcing member is arranged in the stator slot and wraps the stator winding on one side of the geometric center line of the radial direction of the stator slot, and a through hole is formed between the reinforcing member and the surface of the stator winding on the other side of the geometric center line of the stator slot.

Further, E/A is not less than 1.2 and not less than 0.8.

Further, a plurality of stator teeth are arranged on the inner circle of the stator core, stator slots are formed between the adjacent stator teeth, the stator winding is wound on the stator teeth, and the reinforcing piece is wrapped on the stator winding on at least one of the stator teeth.

Furthermore, the stator winding on the at least two stator teeth in the plurality of stator teeth is wrapped with the reinforcing members, and the stator winding wrapped with the reinforcing members is symmetrically arranged.

Further, a plurality of stator teeth are arranged on the inner circle of the stator core, stator slots are formed between the adjacent stator teeth, stator windings are wound on the stator teeth, the number of the stator slots is multiple, at least one of the stator slots is not provided with a reinforcing member, a hollow structure is formed between the stator windings in the stator slots which are not provided with the reinforcing member, the sum of the areas of the cross sections of the hollow structure along the radial direction of the stator core is F, wherein F/K is not less than 3, and K is the pump body displacement of the compressor and is cc.

Furthermore, the reinforcing members are arranged in the stator slots at intervals, the stator slots provided with the reinforcing members are symmetrically arranged, and the stator slots without the reinforcing members are symmetrically arranged.

Furthermore, the outer peripheral surface of the stator core is provided with a plurality of grooves, reinforcing members are arranged in the grooves adjacent to the stator slots provided with the reinforcing members, and the reinforcing members are not arranged in the rest grooves.

Further, the total area of the cross section of the groove in the radial direction of the stator core is D, wherein D/K is more than or equal to 4.

Further, stator core has the stator yoke, and the one side laminating stator yoke that is located each stator inslot's reinforcement sets up, and the setting of the opposite side of reinforcement and stator core's inner circle looks parallel and level, and the middle part of reinforcement is provided with the perforating hole.

Further, the cross section of the through hole is circular, oval, triangular, polygonal or a strip-shaped channel structure with one side open.

According to another aspect of the present invention, there is provided a compressor, comprising a motor, wherein the motor is the above-mentioned motor.

By applying the technical scheme of the invention, the structure of the motor of the compressor is improved, so that the stator iron core of the motor is connected with the reinforcing member, and the reinforcing member is provided with a plurality of through holes for introducing the refrigerant and the lubricating oil; on the other hand, the through holes are formed in the reinforcing piece, so that the flowing reliability of the refrigerant of the compressor is ensured, the oil circulation rate of the compressor is favorably improved, and the energy efficiency and the reliability of the compressor are improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a compressor according to an alternative embodiment of the present invention;

fig. 2 is a schematic structural view illustrating a stator core of a first embodiment of a motor of the compressor of fig. 1;

fig. 3 is a schematic structural view illustrating a stator core of a second embodiment of a dispenser and a motor of the compressor of fig. 1;

fig. 4 is a schematic structural view illustrating a stator core of a third embodiment of a dispenser and a motor of the compressor of fig. 1;

fig. 5 is a schematic structural view illustrating a stator core of a fourth embodiment of a dispenser and a motor of the compressor of fig. 1;

fig. 6 is a schematic structural view illustrating a stator core of an embodiment five of a dispenser and a motor of the compressor of fig. 1;

fig. 7 is a schematic structural view illustrating a stator core of a sixth embodiment of a dispenser and a motor of the compressor of fig. 1;

fig. 8 is a schematic structural view illustrating a stator core of an embodiment seven of a dispenser and a motor of the compressor of fig. 1;

FIG. 9 is a graph showing a comparison of the oil discharge rate of a conventional compressor and the oil discharge rate of the compressor provided herein;

fig. 10 shows a graph comparing noise in the noise spectrum 1000Hz for a prior art compressor and a compressor provided herein.

Wherein the figures include the following reference numerals:

30. a liquid separator; 40. a housing; 50. a motor; 10. a stator core; 20. a reinforcement; 21. a through hole; 11. a stator slot; 12. a stator winding; 13. stator teeth; 14. a groove; 15. a stator yoke.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

In order to solve the problems of large vibration noise and high oil discharge rate of the prior art compressor, the invention provides a motor and a compressor, as shown in fig. 1, the compressor comprises a motor 50, and the motor 50 is the motor described above and below.

As shown in fig. 2 to 8, the motor 50 includes a stator core 10 and a reinforcing member 20, the reinforcing member 20 is connected to the stator core 10, and a plurality of through holes 21 for passing a refrigerant and a lubricating oil are opened on the reinforcing member 20; wherein, the area of the cross section of the reinforcing member 20 in the radial direction of the stator core 10 is A, the total area of the cross sections of the plurality of through holes 21 in the radial direction is E, and 2 is more than or equal to E/A and more than or equal to 0.3.

The structure of the motor 50 of the compressor is improved, so that the stator core 10 of the motor 50 is connected with the reinforcing member 20, and the reinforcing member 20 is provided with a plurality of through holes 21 for introducing a refrigerant and lubricating oil, on one hand, the rigidity of the motor 50 is greatly improved due to the arrangement of the reinforcing member 20, and the noise of the compressor is favorably reduced; on the other hand, the reinforcement 20 is provided with the plurality of through holes 21, so that the flow reliability of the refrigerant of the compressor is ensured, the oil circulation rate of the compressor is improved, and the energy efficiency and the reliability of the compressor are improved.

In the present application, the reinforcing member 20 is a rigid material member, an injection molded member, a gel member, or the like having a certain mass.

Optionally, 7 ≧ E/K ≧ 2, where K is the pump displacement of the compressor in cc.

As shown in fig. 2 to 8, a plurality of stator teeth 13 are disposed on an inner circle of the stator core 10, a stator slot 11 is formed between adjacent stator teeth 13, a stator winding 12 is wound on the stator teeth 13, and the stator winding 12 on at least one stator tooth 13 of the plurality of stator teeth 13 is wrapped by a reinforcing member 20. In this way, the reinforcing member 20 functions to support the stator teeth 13, ensuring that the stator teeth 13 have sufficient structural strength.

In the present application, in order to ensure the overall structural strength of the stator core 10, the stator windings 12 of the plurality of stator teeth 13 having at least two stator teeth 13 are each wrapped with the reinforcing member 20, and the stator windings 12 wrapped with the reinforcing members 20 are symmetrically disposed.

As shown in fig. 2 to 8, the stator core 10 has a stator slot 11, a stator winding 12 is disposed in the stator slot 11, a reinforcing member 20 is disposed in the stator slot 11 and wrapped around an outer surface of the stator winding 12, and a through hole 21 is formed in a middle portion of the stator slot 11. Thus, the rigidity of the stator teeth 13 of the stator core 10 of the motor 50 is facilitated, so that the overall structural rigidity of the stator core 10 is improved, and the purpose of reducing the vibration noise of the compressor is achieved.

Alternatively, 1.5 ≧ E/A ≧ 0.6.

Alternatively, the reinforcement 20 is provided covering the entire slot wall surface of the stator slot 11. Thus, the contact area of the reinforcing member 20 with the slot wall surface of the stator slot 11 is greatly increased, thereby ensuring that the reinforcing member 20 plays a role of supporting the slot wall surface of the stator slot 11, and further ensuring the structural strength of the stator core 10.

Alternatively, the stator slot 11 is plural, and at least one through hole 21 is formed in at least one stator slot 11 of the plural stator slots 11. Thus, the circulation reliability of the refrigerant or oil of the compressor is ensured.

Alternatively, the stator core 10 has a stator slot 11, a stator winding 12 is disposed in the stator slot 11, a reinforcing member 20 is disposed in the stator slot 11 and wraps the stator winding 12 on one side of a geometric center line of the stator slot 11 in a radial direction, and a through hole 21 is formed between the reinforcing member 20 and a surface of the stator winding 12 on the other side of the geometric center line of the stator slot 11.

Alternatively, 1.2 ≧ E/A ≧ 0.8.

It should be noted that, in the present application, a plurality of stator teeth 13 are disposed on an inner circle of a stator core 10, a stator slot 11 is formed between adjacent stator teeth 13, a stator winding 12 is wound on the stator teeth 13, a plurality of stator slots 11 are provided, at least one of the plurality of stator slots 11 is not provided with a reinforcement 20, a hollow structure is formed between the stator windings 12 in the stator slots 11 that are not provided with the reinforcement 20, a sum of areas of cross sections of the hollow structure along a radial direction of the stator core 10 is F, where F/K is greater than or equal to 3, where K is a pump displacement of the compressor, and a unit is cc.

Alternatively, the reinforcing members 20 are disposed at intervals in the stator slots 11, the stator slots 11 provided with the reinforcing members 20 are symmetrically disposed, and the stator slots 11 not provided with the reinforcing members 20 are symmetrically disposed. In this way, uniformity of the weight distribution in the circumferential direction of the stator core 10 is ensured.

As shown in fig. 7, the outer circumferential surface of the stator core 10 is provided with a plurality of recesses 14, the reinforcing members 20 are provided in the recesses 14 adjacent to the stator slots 11 in which the reinforcing members 20 are provided, and the reinforcing members 20 are not provided in the remaining recesses 14. Thus, the reinforcing member 20 functions to support the stator teeth 13.

Alternatively, the total area of the cross-sections of the slots 14 in the radial direction of the stator core 10 is D, wherein D/K ≧ 4.

Alternatively, the stator core 10 has a stator yoke 15, one side of the reinforcing member 20 located in each stator slot 11 is disposed to be attached to the stator yoke 15, the other side of the reinforcing member 20 is disposed to be flush with the inner circle of the stator core 10, and a through hole 21 is disposed in the middle of the reinforcing member 20. In this way, uniformity of the weight distribution of the stator core 10 is ensured.

Alternatively, the cross section of the through-hole 21 is circular, oval, triangular, polygonal, or a strip-shaped channel structure having one side opened.

As shown in fig. 9, a graph comparing the oil discharge rate of a conventional compressor and the oil discharge rate of the compressor according to the present application is provided.

As shown in fig. 10, a comparison graph of noise in a noise spectrum of 1000Hz is provided between the conventional compressor and the compressor provided in the present application.

As shown in fig. 1, the compressor further includes a dispenser 30 and a housing 40.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric machine, comprising:

a stator core (10);

the reinforcing member (20), the reinforcing member (20) is connected with the stator core (10), and a plurality of through holes (21) for introducing refrigerant and lubricating oil are formed in the reinforcing member (20);

the cross section area of the reinforcing member (20) in the radial direction of the stator core (10) is A, the total cross section area of the through holes (21) in the radial direction is E, and E/A is more than or equal to 2 and more than or equal to 0.3;

a plurality of stator teeth (13) are arranged on the inner circle of the stator core (10), stator slots (11) are formed between the adjacent stator teeth (13), a stator winding (12) is wound on the stator teeth (13), a plurality of stator slots (11) are formed, at least one of the plurality of stator slots (11) is not provided with the reinforcing member (20), and a hollow structure is formed between the stator windings (12) in the stator slots (11) which are not provided with the reinforcing member (20);

wherein, E/K is more than or equal to 7 and more than or equal to 2, wherein K is the pump body discharge capacity of the compressor and the unit is cc;

the sum of the areas of the cross sections of the hollow structures along the radial direction of the stator core (10) is F, wherein F/K is more than or equal to 3, and K is the pump body displacement of the compressor and is in unit of cc.

2. The motor according to claim 1, wherein the stator core (10) has a stator slot (11), a stator winding (12) is disposed in the stator slot (11), the reinforcing member (20) is disposed in the stator slot (11) and wrapped around an outer surface of the stator winding (12), and the through hole (21) is formed at a central position of the stator slot (11).

3. The machine of claim 2, wherein 1.5 ≧ E/A ≧ 0.6.

4. An electric machine according to claim 2, characterized in that the reinforcement (20) is arranged to cover the entire slot wall of the stator slot (11).

5. The electrical machine according to claim 2, wherein the stator slot (11) is plural, and at least one through hole (21) is formed in at least one of the stator slots (11) in the plural stator slots (11).

6. An electric machine according to claim 1, characterized in that the stator core (10) has stator slots (11), that a stator winding (12) is arranged in the stator slot (11), that the reinforcement (20) is arranged in the stator slot (11) and wraps the stator winding (12) on one side of a geometric centre line in a radial direction of the stator slot (11), and that the through-going hole (21) is formed between the reinforcement (20) and a surface of the stator winding (12) on the other side of the geometric centre line of the stator slot (11).

7. The machine of claim 6, wherein 1.2 ≧ E/A ≧ 0.8.

8. An electric machine according to claim 6, characterized in that a plurality of stator teeth (13) are arranged on the inner circle of the stator core (10), the stator slots (11) are formed between adjacent stator teeth (13), the stator winding (12) is wound around the stator teeth (13), and the reinforcing member (20) is wrapped around the stator winding (12) on at least one of the stator teeth (13) in the plurality of stator teeth (13).

9. The electrical machine according to claim 8, wherein the stator windings (12) on at least two of the stator teeth (13) of the plurality of stator teeth (13) are each wrapped with the reinforcement (20), the stator windings (12) wrapped with the reinforcement (20) being symmetrically arranged.

10. An electric machine according to claim 1, characterized in that the reinforcement members (20) are arranged at intervals in the stator slots (11), that the stator slots (11) provided with the reinforcement members (20) are arranged symmetrically, and that the stator slots (11) not provided with the reinforcement members (20) are arranged symmetrically.

11. An electric machine according to claim 1, characterized in that the outer circumferential surface of the stator core (10) is provided with a plurality of recesses (14), that the reinforcement (20) is provided in the recess (14) adjacent to the stator slot (11) in which the reinforcement (20) is provided, and that the reinforcement (20) is not provided in the remaining recesses (14).

12. An electric machine according to claim 11, characterized in that the total area of the cross-sections of the slots (14) in the radial direction of the stator core (10) is D, where D/K ≧ 4.

13. The electric machine according to claim 1, wherein the stator core (10) has a stator yoke (15), one side of the reinforcement (20) located in each stator slot (11) is arranged to abut against the stator yoke (15), the other side of the reinforcement (20) is arranged to be flush with the inner circle of the stator core (10), and the middle of the reinforcement (20) is provided with the through hole (21).

14. The machine according to claim 1, characterised in that the cross-section of the through-going hole (21) is circular, oval, polygonal or a strip-shaped channel structure with one side open.

15. A compressor comprising an electric motor (50), characterized in that the electric motor (50) is an electric motor according to any one of claims 1 to 14.