CN108194493B

CN108194493B - Connecting rod structure, compressor and refrigerator

Info

Publication number: CN108194493B
Application number: CN201711177868.9A
Authority: CN
Inventors: 赵文钊; 崔中; 莫子扬; 欧阳成; 陈娟娟
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2017-11-21
Filing date: 2017-11-21
Publication date: 2023-08-25
Anticipated expiration: 2037-11-21
Also published as: CN108194493A

Abstract

The application provides a connecting rod structure, a compressor and a refrigerator, wherein the connecting rod structure comprises: a first connection portion and a second connection portion; the rod body is connected between the first connecting part and the second connecting part, and the position of the rod body relative to the first connecting part is adjustable. The technical scheme of the application solves the problem that the connecting rods in the prior art cannot be compatible among compressors with different displacement.

Description

Connecting rod structure, compressor and refrigerator

Technical Field

The application relates to the technical field of refrigeration equipment, in particular to a connecting rod structure, a compressor and a refrigerator.

Background

The cylinder block of the conventional refrigerator compressor is of a unitary structure, and as shown in fig. 1, a crankshaft 2', a piston, a connecting rod 3', a piston pin, and the like are installed in the cylinder block. The crankshaft 2' shaft of the compressor is of an eccentric structure, the design of the crankshaft 2' is limited by the requirement of compact space, and the crankshaft cannot meet the requirement of balance weight, so that an external additional balance weight 4' is needed. At present, one of the assembly modes of the external balance weight 4' in the industry is to rivet the external balance weight 4' on the crank 1' of the crankshaft so as to make the structure of the compressor more compact, and the structure has the following problems:

as shown in fig. 2 and 3, since the stress of the compressor is mainly related to the refrigerant reaction force F1, the bearing upper end stress F2, and the bearing lower end stress F3, and is related to the arm length L1 (the distance between F1 and F2) and the arm length L2 (the distance between F3 and F2). According to experience, the shorter the L1 and the longer the L2, the more ideal the stress condition of the compressor is, the bearing stress can be well improved, and the reliability of the compressor can be greatly improved. However, for different displacement compressors, the eccentric amounts of the crankshafts 2 'are different, and the eccentric amounts cause different weights of the weights 4', so that the shape of the weights 4 'is not changed, but the thickness of the weights 4' is changed. Because the compressor needs to ensure that L1 is shortest (except for a reserved safe running space), the optimal stress condition is ensured, once the thickness of the external balance weight 4 'is changed, the connecting rod between the two holes of the external balance weight 4' and the connecting rod 3 'is interfered, and the connecting rod 3' cannot be compatible among different displacement compressors.

Disclosure of Invention

The application mainly aims to provide a connecting rod structure, a compressor and a refrigerator, so as to solve the problem that a connecting rod in the prior art cannot be compatible among compressors with different displacement.

In order to achieve the above object, according to one aspect of the present application, there is provided a link structure comprising: a first connection portion and a second connection portion; the rod body is connected between the first connecting part and the second connecting part, and the position of the rod body relative to the first connecting part is adjustable.

Further, the first connecting portion is of a sleeve structure, and the first end of the rod body portion is movably connected to the first connecting portion along the central axis direction of the first connecting portion.

Further, the second end of the rod body is fixedly connected to the second connecting portion.

Further, the second connecting portion is of a sleeve structure.

Further, the first connecting portion is provided with a mounting groove, the mounting groove is formed with a first mounting opening in the side wall of the first connecting portion, the first end of the rod body portion stretches into the mounting groove through the first mounting opening, and the first end of the rod body portion can slide in the mounting groove along the direction of the central axis of the first connecting portion.

Further, be provided with the guide post in the mounting groove, the guide post extends along the direction of the central axis of first connecting portion, and the first end of body of rod portion is provided with first connecting hole, and the first end of body of rod portion is established outside the guide post through first connecting hole cover.

Further, a second connecting hole is formed in the first end face of the first connecting portion, the second connecting hole extends along the direction of the central axis of the first connecting portion and is communicated with the mounting groove, and the guide post penetrates through the second connecting hole.

Further, the second connecting hole is a threaded hole, and the guide post is a connecting bolt.

Further, the connecting rod structure also comprises an adjusting gasket, and the adjusting gasket is sleeved on the guide post and is positioned below the rod body.

Further, a positioning structure is arranged between the first end of the rod body and the mounting groove, and the positioning structure prevents the rod body from swinging relative to the first connecting portion in a plane perpendicular to the central axis of the first connecting portion.

Further, the positioning structure comprises a positioning convex part connected to the first end of the rod body part, the positioning convex part is arranged at an angle with the rod body part, and the mounting groove comprises an extension groove which is matched with the shape of the positioning convex part.

Further, the positioning convex portion includes a first positioning convex portion and a second positioning convex portion, which are disposed at an angle.

Further, the mounting groove penetrates through the second end face of the first connecting portion and forms a second mounting opening, and the second mounting opening is communicated with the first mounting opening.

According to another aspect of the present application, there is provided a compressor including a connecting rod structure, the connecting rod structure being the connecting rod structure described above.

Further, the compressor includes the crank and sets up the bent axle on the crank, and connecting rod structure's first connecting portion or second connecting portion connect on the bent axle, and the compressor still includes the balancing piece, and the balancing piece sets up on the crank and is located connecting rod structure's body of rod portion's below.

According to another aspect of the present application, there is provided a refrigerator including a compressor, which is the above-mentioned compressor.

By applying the technical scheme of the application, when the thicknesses of the balance weights are different for compressors with different displacement, the positions of the rod body part and the first connecting part can be adjusted, so that the rod body part avoids the balance weights. The structure ensures that the length L1 of the force arm can be at the shortest distance on the one hand, and the rod body part cannot interfere with the balance weights with different thicknesses in different displacement on the other hand. Therefore, the technical scheme of the application solves the problem that the connecting rods in the prior art cannot be compatible among compressors with different displacement.

Drawings

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

FIG. 1 shows a schematic diagram of the structure at the crankshaft and connecting rod of a prior art compressor;

FIG. 2 shows a schematic cross-sectional view of the compressor of FIG. 1;

fig. 3 is a schematic view showing the directions of the refrigerant reaction force F1, the bearing upper end force F2 and the bearing lower end force F3 and the positional relationship of the moment arm L1, the moment arm L2 and the moment arm L3 in fig. 2;

fig. 4 shows a schematic structural view of an embodiment of a link structure according to the present application;

FIG. 5 is a schematic perspective view showing a first connecting portion of the connecting rod structure of FIG. 4;

FIG. 6 shows a schematic top view of the first connection of FIG. 5;

FIG. 7 is a schematic top view of the body portion and second connecting portion of the connecting rod structure of FIG. 4;

FIG. 8 is a schematic cross-sectional view of the connecting rod structure of FIG. 4; and

fig. 9 shows a schematic cross-sectional view of a connecting rod, a crankshaft and a crank of the compressor according to the present application.

Wherein the above figures include the following reference numerals:

1', a crank; 2', a crankshaft; 3', a connecting rod; 4', a balance block; 10. a first connection portion; 11. a mounting groove; 111. an extension groove; 12. a first mounting port; 13. a guide post; 14. a first end face; 15. a second connection hole; 16. a second end face; 17. a second mounting port; 20. a second connecting portion; 30. a rod body; 31. a first connection hole; 40. adjusting the gasket; 50. a positioning structure; 51. a first positioning protrusion; 52. a second positioning protrusion; 100. a connecting rod structure; 200. a crank; 300. a crankshaft; 400. and a balance weight.

Detailed Description

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

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

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 application. 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.

As shown in fig. 4, the link structure of the present embodiment includes a first connection portion 10, a second connection portion 20, and a rod body portion 30. The rod portion 30 is connected between the first connecting portion 10 and the second connecting portion 20, and the position of the rod portion 30 relative to the first connecting portion 10 is adjustable.

By applying the technical scheme of the embodiment, for compressors with different displacement, when the thicknesses of the balance weights are different, the positions of the rod body 30 and the first connecting portion 10 can be adjusted, so that the rod body 30 avoids the balance weights. The structure ensures that the length L1 of the moment arm can be at the shortest distance on the one hand, and the rod body 30 cannot interfere with the balance weights with different thicknesses in different displacement. Therefore, the technical scheme of the embodiment solves the problem that the connecting rods in the prior art cannot be compatible between compressors with different displacement.

As can be seen from fig. 4, in the present embodiment, the rod body 30 is provided to be positionally adjustable in the vertical direction with respect to the first connecting portion 10. That is, the rod body 30 can be adjusted in position along the up-down direction, so that the rod body 30 can avoid the balance weight on the crank. Of course, in some embodiments, not shown, the rod 30 may be disposed in other directions, such as along a horizontal direction or along a direction having an included angle with the horizontal direction, so as to be adjustable with respect to the first connecting portion 10.

As shown in fig. 4 and 5, in the technical solution of the present embodiment, the first connecting portion 10 is of a sleeve structure, and the first end of the rod body 30 is movably connected to the first connecting portion 10 along the central axis direction of the first connecting portion 10. The first connection portion 10 is sleeved outside the shaft, and the rod body portion 30 is provided on the first connection portion 10 so as to be movable up and down in the direction of the central axis of the first connection portion 10. When the thickness of the balance weight of the compressor is changed, the rod body 30 is moved upward or downward, so that the position of the rod body 30 is adapted to the thickness of the balance weight.

As shown in fig. 4, in the technical solution of the present embodiment, the second end of the rod body 30 is fixedly connected to the second connecting portion 20. Specifically, the second end of the rod body 30 is immovable relative to the second connecting portion 20, and is fixed relative to the second connecting portion. When the position of the rod 30 is adjusted, the second connecting portion 20 moves together with respect to the rod 30.

As shown in fig. 4, in the technical solution of the present embodiment, the second connecting portion 20 is a sleeve structure. Specifically, the second connecting portion 20 is sleeved on the crankshaft of the compressor.

As shown in fig. 5, in the technical solution of the present embodiment, the first connection portion 10 is provided with a mounting groove 11, and the mounting groove 11 is formed with a first mounting opening 12 on a side wall of the first connection portion 10. The first end of the rod body 30 extends into the mounting groove 11 through the first mounting opening 12, and the first end of the rod body 30 can slide in the mounting groove 11 along the direction of the central axis of the first connecting portion 10. Specifically, the mounting groove 11 penetrates through the side wall of the first connection portion 10 and forms the mounting groove 11, the rod portion 30 extends into the mounting groove 11 from the first mounting port 12, and the end portion of the rod portion 30 is located in the mounting groove 11. The rod body 30 is slidably movable in the up-down direction in the mounting groove 11, so that the rod body 30 is provided to be adjustable in position in the up-down direction with respect to the first connecting portion 10.

As shown in fig. 8, in the technical solution of the present embodiment, a guide post 13 is disposed in the mounting groove 11, the guide post 13 extends along the direction of the central axis of the first connecting portion 10, a first end of the rod body 30 is provided with a first connecting hole 31, and the first end of the rod body 30 is sleeved outside the guide post 13 through the first connecting hole 31. Specifically, one end of the guide post 13 is provided on the bottom wall of the mounting groove 11, and the second end of the guide post 13 is a free end. Further, the guide post 13 extends along the vertical direction, and the first end of the rod body 30 is sleeved outside the guide post 13 through the first connecting hole 31, so that the first end of the rod body 30 can slide along the up-down direction under the guiding action of the guide post 13.

As shown in fig. 5 and 6, in the technical solution of this example, the first end surface 14 of the first connection portion 10 is provided with a second connection hole 15, the second connection hole 15 extends along the direction of the central axis of the first connection portion 10 and is communicated with the mounting groove 11, and the guide post 13 is inserted into the second connection hole 15. Specifically, the first end surface 14 refers to the lower surface of the first connection portion 10, and one end of the second connection hole 15 penetrates the first end surface 14 of the first connection portion 10, and the other end communicates with the mounting groove 11. The lower end of the guide post 13 is inserted into the second connecting hole 15.

As shown in fig. 8, in the technical solution of the present embodiment, the second connecting hole 15 is a threaded hole, and the guide post 13 is a connecting bolt. Specifically, the guide post 13 is screwed into the second connecting hole 15 when the installation is performed, and the above structure facilitates the installation of the guide post 13. Of course, the guide post 13 and the second connecting hole 15 may be connected together by a conventional connection manner such as interference fit, welding, etc.

As shown in fig. 8, in the technical solution of this embodiment, the connecting rod structure further includes an adjusting spacer 40, where the adjusting spacer 40 is sleeved on the guide post 13 and is located below the rod body 30. Specifically, the height of the first end of the rod body 30 on the guide post 13 can be adjusted by adjusting the number of the adjustment shims 40. For example, when it is desired to raise the height of the rod body 30, the number of adjustment shims 40 may be increased. When the height of the rod body 30 needs to be reduced, the number of the adjusting shims 40 can be reduced, or the adjusting shims 40 are not provided

As shown in fig. 5 to 7, in the technical solution of the present embodiment, a positioning structure 50 is provided between the first end of the rod body 30 and the mounting groove 11, and the positioning structure 50 prevents the rod body 30 from swinging relative to the first connecting portion 10 in a plane perpendicular to the central axis of the first connecting portion 10. In order to ensure that the link structure can perform a normal connection transmission effect, relative swing cannot occur between the rod body 30 and the first connection portion 10 in the horizontal direction. Therefore, the positioning structure 50 is disposed between the first end of the rod 30 and the mounting groove 11, and the positioning structure 50 enables the first end of the rod 30 to slide in the up-down direction in the mounting groove 11, but the rod 30 cannot swing in the horizontal direction, that is, the rod 30 cannot swing left and right relative to the first connecting portion 10.

As shown in fig. 5 to 7, in the technical solution of the present embodiment, the positioning structure 50 includes a positioning protrusion connected to the first end of the rod body 30, the positioning protrusion is disposed at an angle with respect to the rod body 30, and the mounting groove 11 includes an extension groove 111 adapted to the shape of the positioning protrusion. Specifically, the positioning protruding portion extends along the horizontal direction, and when the rod body 30 is mounted, the positioning protruding portion is embedded into the extending groove 111, so that the positioning protruding portion is clamped in the extending groove 111, and the rod body 30 cannot shake left and right relative to the positioning structure 50.

As shown in fig. 7, in the technical solution of the present embodiment, the positioning convex portion includes a first positioning convex portion 51 and a second positioning convex portion 52, and the first positioning convex portion 51 and the second positioning convex portion 52 are disposed at an angle. Specifically, the first positioning convex portion 51 and the second positioning convex portion 52 are symmetrically disposed with respect to the center line of the rod body portion 30, and at the same time, the first positioning convex portion 51 and the second positioning convex portion 52 are both curved. As can be seen in fig. 7, the lower end of the shank portion 30 is generally "chevron" shaped. As can be seen from fig. 6, the extending grooves 111 are also symmetrically provided in two, and the shape of the mounting groove 11 is adapted to the shape of the lower end of the rod body 30, also in a herringbone shape. When the rod body 30 is mounted, the first positioning convex portion 51 and the second positioning convex portion 52 are respectively fitted into the two extending grooves 111, thereby restricting the swing of the rod body 30 in the left-right direction.

As shown in fig. 5, in the embodiment, the mounting groove 11 penetrates the second end surface 16 of the first connecting portion 10 and forms a second mounting opening 17. Specifically, the second end face 16 and the first end face 14 are disposed opposite to each other, and the second end face 16 refers to the upper surface of the first connecting portion 10 in this embodiment. Further, the second mounting port 17 and the first mounting port 12 communicate with each other. When the rod body 30 is mounted, the rod body 30 is mounted downward from above the second end surface 16 of the first connecting portion 10, the first positioning convex portion 51 and the second positioning convex portion 52 are aligned with the two extending grooves 111 through the second mounting opening 17, the rod body 30 is moved backward and further downward, the rod body 30 is moved downward through the first mounting opening 12, and finally the first end of the rod body 30 is embedded into the mounting groove 11. After the installation, the guide post 13 is threaded into the first connection hole 31 and then screwed into the second connection hole 15.

The present application also provides a compressor, as shown in fig. 9, an embodiment of the compressor according to the present application includes a connecting rod structure 100, and the connecting rod structure 100 is the connecting rod structure described above.

As shown in fig. 9, in the technical solution of the present embodiment, the compressor includes a crank 200 and a crankshaft 300 disposed on the crank 200, wherein the first connection portion 10 or the second connection portion 20 of the connecting rod structure 100 is connected to the crankshaft 300, and the compressor further includes a balancing weight 400, and the balancing weight 400 is disposed on the crank 200 and below the rod body portion of the connecting rod structure 100. Specifically, as can be seen from fig. 9, when the thickness of the weight 400 needs to be adjusted for a compressor that does not pass the displacement, interference between the rod body 30 and the weight 400 can be prevented by moving the rod body 30.

Further, the compressor may be a scroll compressor, a roller compressor, and other various types of compressors.

The embodiment of the refrigerator comprises a compressor, wherein the compressor is the compressor. Of course, the compressor is not limited to use in a refrigerator, and other refrigeration appliances such as an air conditioner may be configured as described above.

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 application 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 application, 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 application 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 application; 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 application.

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

Claims

1. A link structure, comprising:

a first connection part (10) and a second connection part (20);

a rod body (30) connected between the first connection part (10) and the second connection part (20), wherein the position of the rod body (30) relative to the first connection part (10) is adjustable;

the mounting groove (11) is formed in the first connecting portion (10), a first mounting opening (12) is formed in the side wall of the first connecting portion (10) in the mounting groove (11), the first end of the rod body portion (30) stretches into the mounting groove (11) through the first mounting opening (12), and the first end of the rod body portion (30) can slide in the mounting groove (11) along the direction of the central axis of the first connecting portion (10);

a guide post (13) is arranged in the mounting groove (11), the guide post (13) extends along the direction of the central axis of the first connecting part (10), a first connecting hole (31) is formed in the first end of the rod body part (30), and the first end of the rod body part (30) is sleeved outside the guide post (13) through the first connecting hole (31);

the connecting rod structure further comprises an adjusting gasket (40), the adjusting gasket (40) is sleeved on the guide post (13) and located below the rod body portion (30), and the height of the first end of the rod body portion (30) on the guide post (13) is adjusted by adjusting the number of the adjusting gaskets (40).

2. The connecting rod structure according to claim 1, wherein the first connecting portion (10) is a sleeve structure, and the first end of the rod body (30) is movably connected to the first connecting portion (10) in a direction of a central axis of the first connecting portion (10).

3. The connecting rod structure according to claim 2, characterized in that the second end of the rod body (30) is fixedly connected to the second connecting portion (20).

4. A connecting rod arrangement according to any one of claims 1-3, characterized in that the second connection part (20) is a sleeve arrangement.

5. The connecting rod structure according to claim 1, wherein a second connecting hole (15) is provided on the first end face (14) of the first connecting portion (10), the second connecting hole (15) extends along the direction of the central axis of the first connecting portion (10) and is communicated with the mounting groove (11), and the guide post (13) is penetrated in the second connecting hole (15).

6. The connecting rod structure according to claim 5, wherein the second connecting hole (15) is a threaded hole, and the guide post (13) is a connecting bolt.

7. The connecting rod structure according to claim 1, characterized in that a positioning structure (50) is provided between the first end of the rod body (30) and the mounting groove (11), the positioning structure (50) preventing the rod body (30) from swinging relative to the first connecting portion (10) in a plane perpendicular to the central axis of the first connecting portion (10).

8. The connecting rod structure according to claim 7, wherein the positioning structure (50) comprises a positioning protrusion connected to the first end of the rod body (30), the positioning protrusion being disposed at an angle to the rod body (30), and the mounting groove (11) comprises an extension groove (111) adapted to the shape of the positioning protrusion.

9. The connecting rod structure according to claim 8, wherein the positioning protrusion comprises a first positioning protrusion (51) and a second positioning protrusion (52), the first positioning protrusion (51) and the second positioning protrusion (52) being arranged angularly.

10. The connecting rod structure according to any one of claims 7 to 9, characterized in that the mounting groove (11) penetrates the second end face (16) of the first connecting portion (10) and forms a second mounting opening (17), the second mounting opening (17) communicating with the first mounting opening (12).

11. A compressor comprising a connecting rod structure (100), the connecting rod structure (100) being a connecting rod structure according to any one of claims 1 to 10.

12. The compressor of claim 11, comprising a crank (200) and a crankshaft (300) arranged on the crank (200), the first connection (10) or the second connection (20) of the connecting rod structure (100) being connected to the crankshaft (300), the compressor further comprising a counterweight (400), the counterweight (400) being arranged on the crank (200) below the rod body of the connecting rod structure (100).

13. A refrigerator comprising a compressor as claimed in claim 11 or 12.