CN219592176U - Counterweight assembly, rotor assembly and compressor - Google Patents

Abstract

The utility model provides a counterweight assembly, a rotor assembly and a compressor, comprising: a body part mounted at an end of the rotor; the buffer piece is arranged at one end of the body part, which is close to the rotor, the buffer end of the buffer piece protrudes out of the body part, and the buffer piece is positioned between the body part and the rotor; wherein the buffer is made of a flexible material or an elastic material. According to the technical scheme provided by the utility model, the rotor is buffered through the buffer piece. By the technical scheme provided by the utility model, the technical problem that magnetic steel is easy to float and noise occurs in the working process of a rotor assembly in the prior art can be solved.

Description

Counterweight assembly, rotor assembly and compressor

Technical Field

The utility model relates to the technical field of compressors, in particular to a counterweight assembly, a rotor assembly and a compressor.

Background

At present, in the prior art, magnetic steel is usually arranged in a rotor assembly of a compressor, the magnetic steel is used as a part of the rotor assembly, and when the compressor works, a magnetic field generated by the magnetic steel can play a great role in the operation of a motor.

However, the rotor assembly in the prior art may have errors due to the sizes of the parts, which may result in the length of the rotor being smaller than the depth of the rotor groove, and therefore, a gap may exist between the rotor and the top end when the rotor is placed in the rotor groove, resulting in the rotor moving, thereby generating noise, and the uncertainty of the position of the rotor after the rotor moving may affect the energy efficiency of the motor, thereby affecting the energy efficiency of the compressor.

Disclosure of Invention

The utility model mainly aims to provide a counterweight assembly, a rotor assembly and a compressor, so as to solve the technical problem that magnetic steel in the rotor assembly in the prior art is easy to float and noise occurs during working.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a weight assembly comprising:

a body part mounted at an end of the rotor;

the buffer piece is arranged at one end of the body part, which is close to the rotor, the buffer end of the buffer piece protrudes out of the body part, and the buffer piece is positioned between the body part and the rotor;

wherein the buffer member is made of a flexible material or an elastic material to buffer the rotor through the buffer member.

Further, the buffer member is a strip-shaped structure, the strip-shaped structure is provided with a connecting end and a free end which are oppositely arranged, the connecting end is connected with the body part, and the free end is used for forming a buffer end of the buffer member.

Further, the extending direction of the strip-shaped structures is connected with the end part of the body part at a preset inclination angle, the plurality of strip-shaped structures are arranged at the end part of the body part at intervals, and the extending directions of at least two strip-shaped structures in the plurality of strip-shaped structures are different.

Further, the buffer piece comprises a first buffer part and a second buffer part which are connected at a preset angle, one end of the first buffer part, which is far away from the second buffer part, is connected with the body part, one end of the second buffer part, which is far away from the first buffer part, is connected with the body part, and the connection part of the first buffer part and the second buffer part forms the buffer end of the buffer piece.

Further, the plurality of buffer pieces are arranged on the body part at intervals, and the plurality of buffer pieces comprise a first buffer piece and a second buffer piece;

the first buffer part of the first buffer piece is connected with the second buffer part of the first buffer piece along a first preset direction, the first buffer part of the second buffer piece is connected with the second buffer part of the second buffer piece along a second preset direction, and the first preset direction is different from the second preset direction.

Further, the body portion includes:

the counterweight structure is an annular structure, the counterweight structure is matched with the shape of the rotor, the counterweight structure is used for counterweight the rotor, and the buffer piece is arranged at one end, close to the rotor, of the counterweight structure; and/or the number of the groups of groups,

and the balance structure is arranged at one end of the balance structure, which is far away from the buffer piece, and the balance structure is positioned at one side of the balance structure.

Further, the weight structure comprises a plurality of weight plates, the plurality of weight plates are stacked along the axial direction of the rotor, and the buffer member is arranged on one end of the plurality of weight plates, which is close to the rotor.

Further, a first positioning structure is arranged on one side of the weight plate, a second positioning structure matched with the first positioning structure is arranged on the other side of the weight plate, and the buffer piece and the second positioning structure are arranged at intervals; the first positioning structure of one weight plate is matched with the second positioning structure of the other weight plate in a positioning way.

According to another aspect of the present utility model, there is provided a rotor assembly comprising:

the rotor and the counterweight assembly provided by the above, the counterweight assembly is installed at the end of the rotor.

Further, the groove depth of the mounting groove of the rotor is H, and the length of the rotor is A;

wherein H-A is more than or equal to 0.1mm and less than or equal to 1mm.

Further, the height of the buffer structure of the counterweight component in a natural state is h;

wherein H- (H-A) is more than or equal to 0.1mm and less than or equal to 0.8mm.

According to yet another aspect of the present utility model, there is provided a compressor including the rotor assembly provided above.

By adopting the technical scheme of the utility model, the buffer piece made of the flexible material or the elastic material is arranged at one end, close to the rotor, of the counterweight component, and the buffer piece is positioned between the body part and the rotor, so that the rotor can be limited by the buffer piece in the working process of the rotor component, the movement of the rotor in the working process and the noise generated by the movement can be reduced as much as possible, and the energy efficiency of the compressor is further ensured not to be influenced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view showing the configuration of the body portion, the buffer member and the rotor according to the first embodiment of the present utility model;

FIG. 2 shows an enlarged partial schematic view at A in FIG. 1;

FIG. 3 is a schematic view showing an exploded structure of a body portion, a damper and a rotor according to a first embodiment of the present utility model;

FIG. 4 illustrates a side view of a counterweight assembly provided in accordance with a first embodiment of the utility model;

FIG. 5 illustrates a schematic construction of a counterweight assembly provided in accordance with a first embodiment of the utility model;

FIG. 6 illustrates a side view of a counterweight assembly provided in accordance with a first embodiment of the utility model using an alternative bumper;

FIG. 7 is a schematic view showing a construction of a counterweight assembly according to a first embodiment of the utility model using another buffer;

FIG. 8 illustrates a top view of a weight stack provided in accordance with a first embodiment of the present utility model;

FIG. 9 illustrates a bottom view of a weight plate provided in accordance with an embodiment of the present utility model;

FIG. 10 illustrates a top view of a balance structure provided in a monolithic structure according to a first embodiment of the present utility model;

FIG. 11 illustrates a side view of a balance structure provided in accordance with an embodiment of the present utility model that employs a monolithic structure;

fig. 12 is a schematic structural view of a balance structure with a rotor using a monolithic structure according to a first embodiment of the present utility model;

fig. 13 shows a comparison of noise spectra before and after adding a buffer according to a first embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a body portion; 11. a counterweight structure; 111. a weight plate; 1111. a first positioning structure; 1112. a second positioning structure; 12. a balance structure;

20. a buffer member; 21. a connection end; 22. a free end; 23. a first buffer member; 24. a second buffer member;

30. a rotor;

40. and a lower baffle.

Detailed Description

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

Referring to fig. 1 to 13, in a first embodiment of the present utility model, there is provided a counterweight assembly including: a body portion 10 and a bumper 20. The body 10 is mounted at the end of the rotor 30, the buffer 20 is arranged at one end of the body 10 close to the rotor 30, the buffer end of the buffer 20 protrudes out of the body 10, and the buffer 20 is arranged between the body 10 and the rotor 30. Wherein the buffer member 20 is made of a flexible material or an elastic material to buffer the rotor 30 by the buffer member 20.

With such an arrangement, by arranging the buffer member 20 made of a flexible or elastic material between the body portion 10 and the rotor 30, the rotor 30 can be prevented from moving up and down and moving noise as much as possible by the buffer action of the buffer member 20 when the rotor assembly is in operation, and the energy efficiency of the compressor can be improved. Meanwhile, the buffer member 20 can be made of flexible or elastic materials, so that the rotor 30 can be prevented from being directly contacted with a hard object, and the rotor 30 can be prevented from being damaged due to up-and-down movement.

In particular, the cushioning member 20 may be made of a rubber material or an elastic member or a spring.

In this embodiment, the buffer member 20 has a strip-shaped structure with a connecting end 21 and a free end 22 disposed opposite to each other, the connecting end 21 being connected to the body 10, and the free end 22 being used to form the buffer end of the buffer member 20. This eliminates the need for a separate fixing structure for the buffer member 20, thereby avoiding damage to the rotor 30 by other structures, and also enables the buffer length of the buffer member 20 to be extended as much as possible to provide better protection for the rotor 30.

Specifically, the extending direction of the strip-shaped structures in the present embodiment is connected to the end of the body portion 10 at a predetermined inclination angle, the number of strip-shaped structures is plural, the plurality of strip-shaped structures are disposed at intervals at the end of the body portion 10, and the extending directions of at least two strip-shaped structures in the plurality of strip-shaped structures are different. With such an arrangement, the bar-shaped structure can be made to cover as many directions as possible, so that the bar-shaped structure can be made to block the rotor 30 in more directions to prevent its play.

Alternatively, the buffer member 20 in this embodiment includes a first buffer portion and a second buffer portion connected at a predetermined angle, wherein one end of the first buffer portion away from the second buffer portion is connected with the body portion 10, one end of the second buffer portion away from the first buffer portion is connected with the body portion 10, and a connection portion between the first buffer portion and the second buffer portion forms a buffer end of the buffer member 20. With such an arrangement, the first and second cushioning portions of the cushioning member 20 can be better adapted to the structure of the rotor 30, thereby facilitating better cushioning of the rotor 30 by the cushioning member 20. The cushioning member 20 herein may be understood as a V-shaped structure.

Specifically, the number of cushioning members 20 is plural, the plural cushioning members 20 are provided on the body portion 10 at intervals, and the plural cushioning members 20 include a first cushioning member 23 and a second cushioning member 24. The first buffer portion of the first buffer member 23 is connected with the second buffer portion of the first buffer member 23 along a first preset direction, the first buffer portion of the second buffer member 24 is connected with the second buffer portion of the second buffer member 24 along a second preset direction, and the first preset direction is different from the second preset direction. With such an arrangement, the protection range of the damper 20 can be further widened, and the rotor 30 can be further buffered.

In the present embodiment, the body portion 10 includes a weight structure 11 and a balance structure 12.

Wherein, the weight structure 11 may be an annular structure, the weight structure 11 is adapted to the shape of the rotor 30, the weight structure 11 is used for balancing the rotor 30, and the buffer 20 is disposed at one end of the weight structure 11 close to the rotor 30. Providing the weight structure 11 can increase the mass of the end of the rotor 30, thereby enabling an increase in the energy efficiency of the rotor 30.

Alternatively, the balance structure 12 may be disposed at an end of the balance structure 11 away from the cushioning member 20 such that the balance structure 12 is located at one side of the balance structure 11. The balance structure 12 can provide a certain balance effect for the rotor 30 in operation, so that the rotor 30 works more stably.

Still alternatively, the counterweight structure 11 and the counterweight structure 12 may be provided at the same time, so that the energy efficiency of the compressor can be improved to the greatest extent.

Specifically, the weight structure 11 includes a plurality of weight plates 111, the plurality of weight plates 111 are stacked in the axial direction of the rotor 30, and the buffer 20 is provided on the weight plate 111 of the plurality of weight plates 111 near one end of the rotor 30. By adopting the arrangement, the number of the weight plates 111 of the weight structure 11 can be increased or decreased according to actual requirements so as to change the mass of the weight plates, thereby better meeting the working requirements of different compressors.

Specifically, a first positioning structure 1111 is disposed on one side of the weight plate 111, a second positioning structure 1112 adapted to the first positioning structure 1111 is disposed on the other side of the weight plate 111, and the buffer member 20 is disposed at an interval from the second positioning structure 1112; the first locating feature 1111 of one weight plate 111 is in locating engagement with the second locating feature 1112 in the other weight plate 111. By adopting the arrangement, the matching between any two weight plates 111 can be facilitated, so that the weight plates 111 can be installed more conveniently.

In this embodiment, generally, the weight assembly is provided only at one side of the rotor assembly and at the upper end of the rotor assembly.

When the assembly is carried out, the rotor 30 is arranged in the rotor groove, the other end of the rotor 30 is positioned through the lower baffle 40 of the rotor assembly, and when the fitting structure is arranged on the rotor assembly, the flexible structure is arranged on the fitting, the natural height h of the flexible structure is slightly larger than the gap between the rotor 30 and the rotor groove, as shown in fig. 4, the flexible structure is deformed to generate elastic force, so that the rotor 30 is pressed to the bottom, and the vertical movement is not easy to occur.

In this embodiment, the counterweight assembly is laminated in a single piece. The flexible structure is produced by stamping the flexible strip structure (i.e., the buffer 20) on the mating surface of one of the weight plates 111 of the weight assembly and the rotor.

As shown in fig. 13, a comparison of the noise spectra before and after the addition of the flexible strip structure is shown. Wherein the light bar graph represents the original scheme noise data and the dark bar graph represents the data after the flexible bar structure is added. As can be seen from the figure, the near-field sound pressure of the system can be reduced by about 2dB after the flexible strip structure is added.

In this embodiment, the weight stack 111 is a stainless steel stack, and the stack is provided with snap points. The protruding part of the buckling point is a first positioning structure, the recessed part of the buckling point is a second positioning structure, and the buckling points are fixed through the cooperation of the first positioning structure and the second positioning structure during lamination.

The weight plate 111 disposed on the rotor has a requirement of non-magnetic conduction, and the stainless steel material is the best choice of performance and cost at present in combination with the market cost of the existing materials and the processing technology.

In this embodiment, the buffer member 20 is a V-like structure with a convex middle and two ends connected. The structure is stable, safe and reliable. Preferably, the intermediate raised position of the cushion 20 is separated from the weight stack 111, which results in enhanced flexibility of the flexible structure.

In the present embodiment, the buffer member 20 has an elongated structure, and one end is cut away from the weight plate 111, and the other end is still kept on the weight plate 111; such a flexible structure can provide a large natural height h, and the limitation and fixation of the rotor 30 can be easily achieved. The length a of the rotor 30 and the depth of the rotor grooves can be kept to a larger tolerance, so that the processing cost of the rotor 30 and the rotor is lower.

In this embodiment, the counterweight structure 11 is a rotor counterweight, and the counterweight may be a monolithic lamination structure, and a flexible structure is disposed on a surface of the counterweight, which is bonded to the rotor.

In small series compressors, particularly those with reduced rotor stack height, the rotor moment of inertia is generally small. The compressor will typically provide a counterweight structure on the rotor assembly. The balancing weight structure is formed by laminating single sheets, and the flexible structure is punched on one sheet attached to the rotor 30, so that the limit and fixation of the rotor 30 can be realized, and the problems of movement and noise are solved.

In this embodiment, the rotor assembly includes a rotor 30, a lower baffle 40, a balancing structure 12, and a counterweight structure 11. Wherein the counterweight structure 11 is a monolithic laminated structure, and a flexible structure is arranged on a piece of lamination close to the rotor 30, and the position of the flexible structure corresponds to the rotor groove. The rotor 30 is fitted in the rotor groove, and the rotor 30 has a length a and a groove depth H, satisfying H > a, i.e., the rotor 30 has a gap in the height direction in the rotor 30 after the rotor 30 is fitted in the rotor groove. After the counterweight structure 11 is assembled, the flexible structure on the counterweight structure 11 contacts the rotor 30 and deforms, so as to provide elasticity for the rotor 30 and limit and fix the position of the rotor 30.

The second embodiment of the utility model provides a rotor assembly, which comprises a rotor 30 and the counterweight assembly provided in the first embodiment, wherein the counterweight assembly is arranged at the end part of the rotor 30, so that the mass of the rotor 30 can be effectively increased, the rotational inertia of the rotor 30 can be further increased, and the energy efficiency of the compressor can be improved.

In the present embodiment, the mounting groove of the rotor 30 has a groove depth H, and the rotor 30 has a length A, wherein 0.1 mm.ltoreq.H-A.ltoreq.1 mm. Such an arrangement allows for as little clearance of the rotor 30 from the top of the mounting groove as possible without unduly increasing the difficulty of machining.

Specifically, the height of the buffer structure of the counterweight component in a natural state is H, wherein H- (H-A) is more than or equal to 0.1mm and less than or equal to 0.8mm. The arrangement of the typeface can provide buffering for the rotor 30 by arranging the buffering structure, so that the condition of up-and-down movement of the rotor 30 is avoided as much as possible.

A third embodiment of the present utility model provides a compressor including the rotor assembly provided in the second embodiment.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: by providing the buffer member 20 between the bottom of the body 10 and the rotor 30, the rotor 30 can be buffered by the elastic action of the buffer member 20, and the rotor 30 is restricted from moving up and down, so that the energy efficiency of the compressor is enhanced.

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 exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative 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 in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (12)

1. A counterweight assembly, comprising:

a body part (10) mounted on the end of the rotor (30);

a buffer member (20) disposed at one end of the body portion (10) close to the rotor (30), wherein the buffer end of the buffer member (20) protrudes from the body portion (10), and the buffer member (20) is disposed between the body portion (10) and the rotor (30);

wherein the buffer (20) is made of a flexible material or an elastic material to buffer the rotor (30) by the buffer (20).

2. Counterweight assembly according to claim 1, characterized in that the buffer (20) is a bar-shaped structure having oppositely arranged connecting ends (21) and free ends (22), the connecting ends (21) being connected with the body part (10), the free ends (22) being intended to form buffer ends of the buffer (20).

3. The counterweight assembly according to claim 2, wherein the extending direction of the strip-shaped structure is connected with the end of the body portion (10) at a predetermined inclination angle, the strip-shaped structure is plural, the plurality of strip-shaped structures are arranged at intervals at the end of the body portion (10), and at least two of the plurality of strip-shaped structures have different extending directions.

4. The counterweight assembly of claim 1, wherein the buffer (20) comprises a first buffer portion and a second buffer portion connected at a predetermined angle, wherein an end of the first buffer portion away from the second buffer portion is connected with the body portion (10), an end of the second buffer portion away from the first buffer portion is connected with the body portion (10), and a junction of the first buffer portion and the second buffer portion forms a buffer end of the buffer (20).

5. The counterweight assembly according to claim 4, wherein the number of said cushioning members (20) is plural, a plurality of said cushioning members (20) being disposed on said body portion (10) at intervals, a plurality of said cushioning members (20) including a first cushioning member (23) and a second cushioning member (24);

the first buffer part of the first buffer piece (23) is connected with the second buffer part of the first buffer piece (23) along a first preset direction, the first buffer part of the second buffer piece (24) is connected with the second buffer part of the second buffer piece (24) along a second preset direction, and the first preset direction is different from the second preset direction.

6. The counterweight assembly according to claim 1, wherein the body portion (10) includes:

the counterweight structure (11), the counterweight structure (11) is an annular structure, the counterweight structure (11) is matched with the shape of the rotor (30), the counterweight structure (11) is used for counterweight the rotor (30), and the buffer piece (20) is arranged at one end, close to the rotor (30), of the counterweight structure (11); and/or the number of the groups of groups,

and the balance structure (12) is arranged at one end of the balance structure (11) far away from the buffer piece (20), and the balance structure (12) is positioned at one side of the balance structure (11).

7. The weight assembly of claim 6, wherein the weight structure (11) comprises a plurality of weight plates (111), the plurality of weight plates (111) being stacked in an axial direction of the rotor (30), the buffer (20) being disposed on the weight plate (111) of the plurality of weight plates (111) near an end of the rotor (30).

8. The weight assembly according to claim 7, wherein a first positioning structure (1111) is provided on one side of the weight plate (111), a second positioning structure (1112) adapted to the first positioning structure (1111) is provided on the other side of the weight plate (111), and the buffer (20) is disposed at a distance from the second positioning structure (1112); the first locating structure (1111) of one of the weight plates (111) is in locating engagement with the second locating structure (1112) of the other of the weight plates (111).

9. A rotor assembly, comprising:

a rotor (30);

the counterweight assembly of any of claims 1 to 8 mounted at an end of the rotor (30).

10. The rotor assembly according to claim 9, characterized in that the mounting groove of the rotor (30) has a groove depth H, the rotor (30) having a length a;

wherein H-A is more than or equal to 0.1mm and less than or equal to 1mm.

11. The rotor assembly of claim 10 wherein the cushioning structure of the counterweight assembly has a height h in a natural state;

wherein H- (H-A) is more than or equal to 0.1mm and less than or equal to 0.8mm.

12. A compressor comprising a rotor assembly according to any one of claims 9 to 11.