CN214626674U - Motor and compressor with same - Google Patents

Abstract

The utility model provides a motor and a compressor with the same, wherein the motor comprises a stator; the upper rotor is arranged in the stator; the lower rotor is arranged in the stator, and the lower rotor and the upper rotor are arranged at a distance; the balance part is connected with the lower rotor and is positioned between the upper rotor and the lower rotor. The rotor is arranged to be a split structure with the upper rotor and the lower rotor, and the balance part is arranged between the upper rotor and the lower rotor, so that the axial height of the whole structure of the rotor can be optimized, the deflection of a crankshaft penetrating through the upper rotor and the lower rotor is effectively reduced, and the reliability of the motor is improved.

Description

Motor and compressor with same

Technical Field

The utility model relates to a compressor equipment technical field particularly, relates to a motor and have its compressor.

Background

In the design process of the traditional compressor, a main balance block and an auxiliary balance block are respectively arranged at the upper section and the lower section of a motor rotor; the moment balance with the eccentric structure of the pump body is achieved; however, the crankshaft is fixed relative to the rotor by a cantilever structure, and the balance weight is designed asymmetrically, so that the deflection of the crankshaft is too large in the rotation process of the compressor, and the upper end of the rotor has a sweeping risk. Moreover, the traditional compressor is provided with a silencer, a rotating part must reserve enough safety distance, the existence of a main balance weight limits the assembly height of a motor rotor, and the motor reliability is low due to the fact that the assembly height of the rotor is increased, and the deflection of a crankshaft is increased.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a motor and a compressor having the same to solve the problem of low reliability of the prior art motor.

In order to achieve the above object, according to an aspect of the present invention, there is provided a motor including: a stator; the upper rotor is arranged in the stator; the lower rotor is arranged in the stator, and the lower rotor and the upper rotor are arranged at a distance; the balance part is connected with the lower rotor and is positioned between the upper rotor and the lower rotor.

Furthermore, the balancing part comprises an auxiliary balancing block, the auxiliary balancing block is connected with the end face of the lower rotor, facing to one side of the upper rotor, and at least part of the auxiliary balancing block is arranged with a distance from the upper rotor.

Further, the height of the upper rotor in the axial direction is H1, the height of the lower rotor in the axial direction is H2, and H1/H2 is not less than 0.57 and not more than 4.5.

Further, the motor further includes: a housing; the upper stator is arranged in the shell and is matched with the upper rotor; the lower stator is arranged in the shell and positioned below the upper stator, and the lower stator is matched with the lower rotor; and the stator partition plate is arranged in the shell and positioned between the upper stator and the lower stator.

Further, the distance from the upper end face of the upper rotor to the lower end face of the lower rotor is H, the height of the stator partition plate in the axial direction is H3, and H3 ≦ 0.3H.

Furthermore, the upper rotor and the lower rotor are provided with an overflowing channel, the overflowing channel extends along the axial direction of the shell, and the axial direction of the stator partition plate is provided with a communicating channel communicated with the overflowing channel.

Furthermore, the lower rotor is provided with an overflowing channel, and the radial direction of the stator partition plate is provided with a communicating channel communicated with the overflowing channel.

Further, the outer diameter of the stator spacer is larger than the outer diameters of the upper stator and the lower stator.

Further, the shape of the cross section of the stator partition plate is the same as that of the cross section of the stator core of the upper stator, or the stator partition plate is of an annular structure, a plurality of protruding structures are arranged on the inner circumferential surface of the stator partition plate, the lower rotor is provided with an overflowing channel, and at least one of the protruding structures is provided with a communicating channel communicated with the overflowing channel.

Furthermore, the stator partition board is of an annular structure, partition board stator teeth are arranged on the inner circumferential surface of the stator partition board, and the distance from the end parts of the partition board stator teeth to the geometric center line of the axial direction of the shell is larger than the distance from the end parts of the upper stator teeth of the upper stator to the geometric center line.

Further, the stator spacer is made of a non-magnetic conductive material or a magnetic conductive material, wherein when the stator spacer is made of the magnetic conductive material, the stator spacer is formed by splicing a plurality of annular bodies and a plurality of tooth parts.

Furthermore, the upper end face of the stator partition plate is provided with a first connecting column connected with the upper stator, and the lower end face of the stator partition plate is provided with a second connecting column connected with the lower stator.

Further, the stator partition board is integrated into one piece, the stator partition board is of a hollow structure, and the refrigerating oil of the motor can flow in the shell through the hollow structure.

Further, the lower end face of the lower stator is flush with the lower end face of the lower rotor, the height of the upper end face of the lower rotor in the axial direction of the motor is larger than that of the upper end face of the lower stator in the axial direction of the motor, and/or the height of the upper end face of the upper rotor in the axial direction of the motor is larger than that of the upper end face of the upper stator in the axial direction of the motor.

Further, the lower end face of the lower rotor is located in an inner peripheral face formed by the lower stator, and the height of the upper end face of the upper rotor in the axial direction of the motor is larger than that of the upper end face of the upper stator in the axial direction of the motor.

Further, the height between the upper end surface of the upper stator and the lower end surface of the lower stator is smaller than the height between the upper end surface of the upper rotor and the lower end surface of the lower rotor.

Furthermore, the balancing part comprises an auxiliary balancing block and a main balancing block, the main balancing block is arranged between the upper rotor and the lower rotor, and the auxiliary balancing block is connected with the upper end face of the upper rotor.

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

Use the technical scheme of the utility model, set the rotor to the components of a whole that can function independently structure that has last rotor and lower rotor, set up the balancing part simultaneously between last rotor and lower rotor, set up like this and can play the axial height who has optimized rotor overall structure, reduce the amount of deflection of wearing to locate the bent axle in last rotor and the lower rotor effectively to the reliability of motor has been improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, 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 first embodiment of an electric machine according to the invention;

fig. 2 shows a schematic structural view of a second embodiment of an electric machine according to the invention;

fig. 3 shows a schematic structural view of a third embodiment of an electric machine according to the invention;

figure 4 shows a schematic structural view of an embodiment of the lower rotor according to the present invention;

fig. 5 shows a schematic structural view of an embodiment of an upper rotor according to the present invention;

fig. 6 shows a schematic structural view of a fourth embodiment of an electric machine according to the invention;

fig. 7 shows a schematic structural view of an embodiment of a stator diaphragm according to the present invention.

Wherein the figures include the following reference numerals:

10. a stator; 20. an upper rotor; 30. a lower rotor; 40. a secondary counterbalance; 50. an overflow channel; 60. a housing; 70. an upper stator; 80. a lower stator; 90. a stator diaphragm; 91. an annular body; 92. a tooth portion.

100. An oil blocking cap; 101. a crankshaft; 102. a primary counterbalance.

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 accompanying drawings in conjunction with embodiments.

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 described above 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.

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.

Referring to fig. 1 to 7, according to an embodiment of the present invention, an electric machine is provided.

Specifically, the motor includes a stator 10, an upper rotor 20, a lower rotor 30, and a balance part. The upper rotor 20 is disposed inside the stator 10. The lower rotor 30 is disposed within the stator 10, and the lower rotor 30 is disposed at a distance from the upper rotor 20. The balance portion is connected to the lower rotor 30, and the balance portion is located between the upper rotor 20 and the lower rotor 30. As shown in fig. 1, the balancing portion includes a secondary balancing mass 40, the secondary balancing mass 40 is connected to an end surface of the lower rotor 30 facing the upper rotor 20, and at least a portion of the secondary balancing mass 40 is disposed at a distance from the upper rotor 20.

In this embodiment, the rotor is provided with a split structure of the upper rotor and the lower rotor, and the balance part is provided between the upper rotor and the lower rotor, so that the axial height of the overall structure of the rotor can be optimized, and the deflection of the crankshaft 101 penetrating through the upper rotor and the lower rotor can be effectively reduced, thereby improving the reliability of the motor.

In order to ensure the reliability and reduce the influence of the end part of the motor on the efficiency of the motor, the sectional height of the motor cannot be too small. As shown in fig. 6 and 7, the motor further includes a housing 60, an upper stator 70, a lower stator 80, and a stator partition 90. The upper stator 70 is disposed within the housing 60, and the upper stator 70 is disposed in cooperation with the upper rotor 20. The lower stator 80 is disposed within the housing 60 and below the upper stator 70. The lower stator 80 is disposed in cooperation with the lower rotor 30. A stator spacer 90 is disposed within the housing 60 between the upper stator 70 and the lower stator 80. The height of the upper rotor 20 in the axial direction is H1, and the height of the lower rotor 30 in the axial direction is H2, wherein H1/H2 is not less than 0.57 and not more than 4.5. The distance from the upper end face of the upper rotor 20 to the lower end face of the lower rotor 30 is H, wherein the height of the stator diaphragm 90 in the axial direction is H3, wherein H3 ≦ 0.3H. This arrangement can improve the reliability of the motor. As shown in fig. 1, an oil blocking cap 100 is provided on an end surface of the upper rotor 20.

As shown in fig. 2, the upper rotor 20 and the lower rotor 30 are provided with a flow passage 50, the flow passage 50 extends along the axial direction of the housing 60, and the stator partition 90 is provided with a communication passage in the axial direction, the communication passage being communicated with the flow passage 50. The arrangement can facilitate the circulation of the refrigeration oil.

As shown in fig. 3, in another embodiment of the present application, the transfer passage 50 is opened only in the lower rotor 30, and the stator partition 90 is opened in a radial direction with a communication passage communicating with the transfer passage 50. By the arrangement, the lower end face of the upper rotor 20 has the oil baffle function, the oil baffle structure is omitted, and the reliability of the motor is further improved.

The stator spacer 90 has an outer diameter greater than the outer diameters of the upper and lower stators 70 and 80. The interference magnitude of the stator partition plate 90 and the shell can be increased by the arrangement, the rigidity of the whole stator and the shell is increased, the vibration and the noise of the motor are reduced, and the problem of stator stress iron loss caused by the fact that the interference magnitude is directly increased by the stator core is solved.

The shape of the cross section of the stator partition plate 90 is the same as the shape of the cross section of the stator core of the upper stator 70, or the stator partition plate 90 is of an annular structure, a plurality of protruding structures are arranged on the inner circumferential surface of the stator partition plate 90, the lower rotor 30 is provided with the flow passage 50, and at least one of the protruding structures is provided with a communication passage communicated with the flow passage 50.

The stator partition 90 is an annular structure, partition stator teeth are disposed on an inner circumferential surface of the stator partition 90, and a distance from an end of each partition stator tooth to a geometric center line of the housing 60 in the axial direction is greater than a distance from an end of an upper stator tooth of the upper stator 70 to the geometric center line. I.e., the teeth of the stator separator 90 are shorter than the teeth of the stator.

Specifically, when the stator partition 90 is punched into a circular ring structure by adopting a magnetic conduction structure, the stator partition may be of an integral type or of a segmented type as shown in fig. 7. When the stator separator 90 is made of a non-magnetic material, the stator separator may be formed by punching thin plates into a core structure identical to that of the stator, or may be formed by punching into a ring structure having no tooth shoe or having only a yoke portion. Or a block structure can be adopted to be overlapped into an annular structure with a certain height, and each block structure is connected with the stator cores on the upper side and the lower side through a buckling point.

The stator spacer 90 is made of a non-magnetic conductive material or a magnetic conductive material, and when the stator spacer 90 is made of a magnetic conductive material, the stator spacer 90 is formed by splicing a plurality of ring-shaped bodies 91 and a plurality of teeth 92.

Further, the upper end surface of the stator partition 90 is provided with a first connection column connected with the upper stator 70, and the lower end surface of the stator partition 90 is provided with a second connection column connected with the lower stator 80. This arrangement can improve the mounting reliability of the stator.

The stator partition 90 may also be integrally formed, and the stator partition 90 has a hollow structure, so that the refrigeration oil of the motor can flow in the housing 60 through the hollow structure.

In the present application, the lower end surface of the lower stator 80 is flush with the lower end surface of the lower rotor 30, the height of the upper end surface of the lower rotor 30 in the axial direction of the motor is greater than the height of the upper end surface of the lower stator 80 in the axial direction of the motor, and the height of the upper end surface of the upper rotor 20 in the axial direction of the motor is greater than the height of the upper end surface of the upper stator 70 in the axial direction of the motor. Or the lower end surface of the lower rotor 30 is set to be located in the inner peripheral surface formed by the lower stator 80, the height of the upper end surface of the upper rotor 20 in the axial direction of the motor is greater than the height of the upper end surface of the upper stator 70 in the axial direction of the motor, and the height between the upper end surface of the upper stator 70 and the lower end surface of the lower stator 80 is less than the height between the upper end surface of the upper rotor 20 and the lower end surface of the lower rotor 30. The design that the end faces of the stator and the rotor have the height difference is adopted to balance the gas force of the air flow in the compressor to the rotor in the upward direction in the operation process of the compressor with the motor structure, so that the reliability of the compressor can be improved.

In another embodiment of the present application, the balancing part includes a sub-balancing weight 40 and a main balancing weight, the main balancing weight is disposed between the upper rotor 20 and the lower rotor 30, and the sub-balancing weight 40 is coupled to the upper end surface of the upper rotor 20. The arrangement can also play a role in reducing the deflection of the crankshaft of the motor.

The motor in the above-mentioned embodiment can also be used for compressor equipment technical field, promptly according to the utility model discloses a further aspect provides a compressor, including the motor, the motor is the motor in the above-mentioned embodiment.

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.

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 (18)

1. An electric machine, comprising:

a stator (10);

an upper rotor (20), the upper rotor (20) being disposed within the stator (10);

a lower rotor (30), the lower rotor (30) being disposed within the stator (10), the lower rotor (30) being disposed at a distance from the upper rotor (20);

a balancing part connected with the lower rotor (30), the balancing part being located between the upper rotor (20) and the lower rotor (30).

2. The electric machine according to claim 1, characterized in that the balancing portion comprises a secondary balancing mass (40), the secondary balancing mass (40) being connected to an end surface of the lower rotor (30) facing the upper rotor (20), at least part of the secondary balancing mass (40) being arranged at a distance from the upper rotor (20).

3. The machine according to claim 1, characterized in that the height of the upper rotor (20) in the axial direction is H1 and the height of the lower rotor (30) in the axial direction is H2, where 0.57 ≦ H1/H2 ≦ 4.5.

4. The electric machine of claim 1, further comprising:

a housing (60);

an upper stator (70), the upper stator (70) being disposed within the housing (60), the upper stator (70) being cooperatively disposed with the upper rotor (20);

a lower stator (80), the lower stator (80) being disposed within the housing (60) and below the upper stator (70), the lower stator (80) being disposed in cooperation with the lower rotor (30);

a stator spacer (90) disposed within the housing (60) between the upper stator (70) and the lower stator (80), the stator spacer (90).

5. The machine according to claim 4, wherein the upper end face of the upper rotor (20) is at a distance H from the lower end face of the lower rotor (30), and the height of the stator diaphragm (90) in the axial direction is H3, wherein H3 ≦ 0.3H.

6. The motor according to claim 4, wherein the upper rotor (20) and the lower rotor (30) are provided with a flow passage (50), the flow passage (50) extends along the axial direction of the housing (60), and the stator partition (90) is provided with a communication passage in the axial direction, the communication passage being communicated with the flow passage (50).

7. The motor according to claim 4, wherein the lower rotor (30) is provided with a flow passage (50), and the stator partition (90) is provided with a communication passage in the radial direction, wherein the communication passage is communicated with the flow passage (50).

8. The electric machine of claim 4, wherein the stator spacer (90) outer diameter is greater than the outer diameters of the upper stator (70) and the lower stator (80).

9. The electric machine of claim 4,

the shape of the cross section of the stator diaphragm (90) is the same as the shape of the cross section of the stator core of the upper stator (70), or,

the stator diaphragm (90) is of annular construction, or,

the stator partition plate (90) is of an annular structure, a plurality of protruding structures are arranged on the inner circumferential surface of the stator partition plate (90), the lower rotor (30) is provided with a flow passage (50), and at least one of the protruding structures is provided with a communication passage communicated with the flow passage (50).

10. The electric machine according to claim 4, characterized in that the stator spacer (90) is of an annular configuration, spacer stator teeth are provided on an inner circumferential surface of the stator spacer (90), and a distance from an end of the spacer stator teeth to a geometric center line of the housing (60) in an axial direction is greater than a distance from an end of upper stator teeth of the upper stator (70) to the geometric center line.

11. The machine according to claim 9 or 10, characterized in that the stator spacer (90) is made of a non-magnetic or a magnetic conductive material, wherein the stator spacer (90) is formed by a plurality of ring-shaped bodies (91) and a plurality of teeth (92) spliced together when the stator spacer (90) is made of the magnetic conductive material.

12. The machine according to claim 4, characterized in that the upper end face of the stator diaphragm (90) is provided with a first connection post connected with the upper stator (70), and the lower end face of the stator diaphragm (90) is provided with a second connection post connected with the lower stator (80).

13. The electric machine according to claim 4, characterized in that the stator diaphragm (90) is integrally formed, the stator diaphragm (90) being of a hollowed-out structure through which the refrigeration oil of the electric machine can flow inside the housing (60).

14. The electric machine according to claim 4, characterized in that the lower end face of the lower stator (80) is flush with the lower end face of the lower rotor (30), the height of the upper end face of the lower rotor (30) in the axial direction of the electric machine being greater than the height of the upper end face of the lower stator (80) in the axial direction of the electric machine, and/or the height of the upper end face of the upper rotor (20) in the axial direction of the electric machine being greater than the height of the upper end face of the upper stator (70) in the axial direction of the electric machine.

15. The motor according to claim 4, wherein a lower end surface of the lower rotor (30) is located within an inner circumferential surface formed by the lower stator (80), and a height of an upper end surface of the upper rotor (20) in an axial direction of the motor is larger than a height of an upper end surface of the upper stator (70) in the axial direction of the motor.

16. The machine according to claim 4, characterized in that the height between the upper end face of the upper stator (70) and the lower end face of the lower stator (80) is smaller than the height between the upper end face of the upper rotor (20) and the lower end face of the lower rotor (30).

17. The electric machine according to claim 1, characterized in that the balancing portion comprises a secondary balancing mass (40) and a primary balancing mass, the primary balancing mass being arranged between the upper rotor (20) and the lower rotor (30), the secondary balancing mass (40) being connected to the upper end face of the upper rotor (20).

18. A compressor comprising an electric motor, characterized in that the electric motor is according to any one of claims 1 to 17.

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