Main bearing for compressor, compressor and refrigerating system

Abstract

The utility model discloses a main bearing for a compressor, the compressor and a refrigerating system. The main bearing for the compressor comprises a disc part, the peripheral face of the disc part comprises a plurality of machining parts and a plurality of non-machining parts, the machining parts and the non-machining parts are alternately arranged along the periphery of the disc part, and each machining part comprises a boss used for being fixedly connected with a compressor shell. According to the main bearing for the compressor, the compressor and the refrigerating system, the problem that when a pump body bearing of an existing compressor is connected with a compressor shell through a whole-circle outer ring structure, extra contact stress is likely to be caused, and therefore the service life and the operation stability of the compressor are affected can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, specifically, a kind of main bearing for compressor, compressor and refrigeration system. BACKGROUND

[0002] At present, the pump body bearing fixing mode of compressor adopts whole circle outer ring structure, and the whole circle outer ring structure needs to be cut a lot when processing, not only the processing efficiency is low, but also a lot of material waste is caused. The whole circle outer ring structure is in full contact between the compressor shell, although the stability of connection is ensured, but in the process of compressor operation, additional contact stress is easily caused, and then the service life of bearing and shell is influenced. The whole circle outer ring structure is the only vibration transmission path of pump body and compressor shell, and the structure characteristics cause that vibration transmission is strong, not only the running stability of compressor is influenced, but also noise and vibration problem can be caused, and the overall performance of compressor is adversely affected. SUMMARY

[0003] The main purpose of the utility model is to provide a kind of main bearing for compressor, compressor and refrigeration system, to at least solve the problem that additional contact stress is easily caused when the pump body bearing of compressor and compressor shell are connected by whole circle outer ring structure, thereby influencing the service life and running stability of compressor.

[0004] According to one aspect of the utility model, a kind of main bearing for compressor is provided, comprising:

[0005] Disc part, the outer periphery of the disc part includes several processing parts and several non-processing parts, several processing parts and several non-processing parts are arranged alternately along the outer periphery of the disc part, and the processing part includes boss for fixedly connected compressor shell.

[0006] Further, the processing part includes processing surface, the non-processing part includes blank surface, the processing surface and the blank surface are arc surface and concentrically arranged with the disc part, and the radius of the blank surface is less than the radius of the processing surface.

[0007] Further, the radian occupied by single processing surface is greater than or equal to 1 / 18 π.

[0008] Further, the maximum height of the boss is less than or equal to 6 millimeters.

[0009] Further, the outer periphery of the disc part includes at least 3 processing parts.

[0010] Further, the boss is provided with conical welding hole for welding with compressor shell, and the top angle of the conical welding hole is greater than or equal to 60 °.

[0011] Further, an angle between any two center axes of the conical welding holes is greater than or equal to 30°.

[0012] Further, the main bearing further comprises a shaft handle vertically arranged at the center of the disc part, and the shaft handle is integrally arranged with the disc part.

[0013] Further, the disc part and the shaft handle have surfaces for cooperating with the muffler to form a muffling cavity, and the surfaces of the disc part and the shaft handle for forming the muffling cavity are concave-convex surfaces.

[0014] In another aspect, the utility model also provides a kind of compressor, and the compressor includes the main bearing for compressor described above.

[0015] In another aspect, the utility model also provides a kind of refrigeration system, and the refrigeration system includes the compressor described above.

[0016] In the utility model, by alternately arranging processing portion and non-processing portion on the outer circumferential surface of the disc part of main bearing, the need of full circumference processing is reduced, the processing cost of main bearing is effectively reduced, and production cost is compressed. By adjusting the radius difference between blank surface and processing surface, the contact stress between bearing and compressor shell is effectively reduced, not only the deformation of bearing due to stress is significantly reduced, the durability and reliability are improved, but also the service life of compressor is prolonged by reducing friction and wear. By setting conical welding hole on the boss of processing portion, not only the welding area is increased, but also the welding strength is improved, and by reasonable apex angle setting, the welding effect is optimized, and the close connection between bearing and compressor shell is ensured. By setting concave-convex surface between disc part and shaft handle, and forming muffling cavity with muffler, the vibration transmission of main bearing to shell is effectively reduced, and the vibration noise of compressor as a whole is significantly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0018] Figure 1 The perspective view of the main bearing for compressor disclosed in the embodiments of the utility model is shown in the drawings;

[0019] Figure 2 Another perspective view of the main bearing for compressor disclosed in the embodiments of the utility model is shown in the drawings;

[0020] Figure 3 The top view of the main bearing for compressor disclosed in the embodiments of the utility model is shown in the drawings;

[0021] Figure 4 Another plan view of the main bearing for the compressor according to an embodiment of the present application is disclosed.

[0022] Figure 5 A sectional view when the main bearing for the compressor is connected to the muffler according to an embodiment of the present application is disclosed.

[0023] Figure 6 A perspective view of the compressor according to an embodiment of the present application is disclosed.

[0024] Among the above-described drawings, the following reference numerals are used:

[0025] 10, disc part; 11, processed part; 111, boss; 1111, conical welding hole; 112, processed surface; 12, non-processed part; 121, blank surface; 13, exhaust part; 131, exhaust hole; 14, through hole; 15, connecting hole; 20, shaft handle; 201, first concave-convex surface; 202, second concave-convex surface; 30, muffler; 301, muffling cavity; 40, compressor housing; 50, crankshaft; 60, cylinder; 70, auxiliary bearing. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combinations thereof.

[0028] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0029] Referring to Figures 1 to 4 As shown, according to the embodiments of the present application, a main bearing for a compressor is provided, comprising a disc part 10, the outer circumferential surface of the disc part 10 comprises a plurality of processed parts 11 and a plurality of non-processed parts 12, the plurality of processed parts 11 and the plurality of non-processed parts 12 are arranged alternately along the outer circumferential surface of the disc part 10, the processed part 11 comprises a boss 111 for fixedly connecting a compressor shell 40. It can be understood that the processed part 11 is obtained by processing at a specific position of the outer circumferential surface of the disc part 10, and the non-processed part 12 is an area of the outer circumferential surface of the disc part 10 which is not processed, along the outer circumferential surface of the disc part 10, the processed part 11 and the non-processed part 12 are adjacent to each other, that is, the processed part 11 is adjacent to the non-processed part 12 at both ends of the circumferential direction of the disc part 10, and by analogy, the non-processed part 12 is adjacent to the processed part 11 at both ends of the circumferential direction of the disc part 10, through the alternate arrangement of the processed part 11 and the non-processed part 12, the outer circumferential surface of the disc part 10 is effectively divided into areas with different functional characteristics.

[0030] In this embodiment, by setting the machining part 11 on the disc part 10 of the main bearing for fixed connection with the compressor shell 40, and the non-machining part 12 remains in the original state, unnecessary material processing can be reduced, and the processing cost of the main bearing is further reduced. By alternately arranging the machining part 11 and the non-machining part 12 on the outer peripheral surface of the disc part 10, the stability of the main bearing is improved, and the structural strength of the outer periphery of the bearing is increased. By setting the boss 111 for connecting the compressor shell 40 on the machining part 11, only the machining part 11 of the outer peripheral surface of the main bearing is in contact with the compressor shell 40, and the non-machining part 12 is not in contact with the compressor shell 40, thereby reducing the contact stress between the main bearing and the compressor shell 40 during operation, reducing the deformation of the bearing, and improving the reliability of the bearing. When the compressor is working, if the entire outer peripheral surface of the main bearing is in contact with the compressor shell 40, the main bearing will transmit vibration to the compressor shell 40, making the overall vibration noise of the compressor larger. By setting the boss 111 specially used for contact with the compressor shell 40, the overall vibration noise of the compressor is reduced.

[0031] Further, the machining part 11 includes a machining surface 112, and the non-machining part 12 includes a blank surface 121. The machining surface 112 and the blank surface 121 are both arc surfaces and are concentrically arranged with the disc part 10. The radius of the blank surface 121 is less than or equal to the radius of the machining surface 112. The machining surface 112 and the blank surface 121 are concentrically arranged with the disc, that is, the machining surface 112 is an arc structure with the center of the disc part 10 as the center, and the blank surface 121 is an arc structure with the center of the disc part 10 as the center. By setting the radius of the blank surface 121 to be less than the radius of the machining surface 112, when the radius of the blank surface 121 is less than the radius of the machining surface 112, the machining surface 112 is a convex structure relative to the blank surface 121, that is, the aforementioned boss 111 for contact with the compressor shell 40. Through the boss 111 structure, it is ensured that only the convex structure of the machining surface 112 is in contact with the compressor shell 40 when the main bearing is fixedly connected with the compressor shell 40, thereby avoiding excessive contact stress caused by the entire outer peripheral surface of the main bearing being in contact with the compressor shell 40, avoiding deformation of the bearing, and avoiding the influence of vibration between the compressor shell 40 and the main bearing, thereby improving the stability of the compressor operation.

[0032] Further, the single machining surface 112 occupies an arc greater than or equal to 1 / 18π. The size of the single machining surface 112 can ensure that the contact area between the machining surface 112 and the compressor shell 40 is relatively large, thereby improving the stability and reliability of the connection. A larger contact area can effectively disperse the stress at the connection point, reduce the risk of connection failure caused by stress concentration, and ensure the stability of the compressor during long-term operation.

[0033] Further, the maximum height of the boss 111 is less than or equal to 6 mm. By setting the maximum height of the boss to be less than or equal to 6 mm, i.e., the maximum height difference between the machined surface 112 and the blank surface 121 is less than or equal to 6 mm, the support area and stability of the boss 111 can be improved, and it can withstand greater pressure or load. When the compressor is working, the boss connects the compressor shell, limiting the maximum height of the boss helps to disperse stress, improve overall stability and durability, and ensure that the main bearing is not easily deformed or damaged during long-term use. By limiting the maximum height of the boss 111, the strength of the connection site can be enhanced, which helps to prevent the connection site from loosening or breaking when subjected to external forces, thereby improving the reliability and durability of the entire compressor. When subjected to external forces, the height and shape of the boss 111 can affect the distribution of stress. By reasonably designing the height of the boss 111, the stress distribution can be optimized, and stress concentration can be reduced, thereby reducing the risk of damage to the connection between the main bearing and the compressor shell 40.

[0034] Further, the outer peripheral surface of the disc part 10 includes at least 3 machining parts 11. By setting the number of machining parts 11 of the outer peripheral surface of the disc part 10 to be at least 3 or more, the stress at the connection point can be more effectively dispersed, and the risk of connection failure due to stress concentration can be reduced, thereby improving the stability and reliability of the connection. The presence of multiple machining parts 11 makes the connection between the disc part 10 and the compressor shell 40 more secure, which helps to improve the strength and rigidity of the overall structure of the compressor.

[0035] Further, the boss 111 is provided with a conical welding hole 1111 for welding with the compressor shell 40, and the top angle of the conical welding hole 1111 is greater than or equal to 60°. By providing a conical welding hole 1111 on the boss 111, the welding can be more uniform and full, and by setting the top angle of the conical welding hole 1111 to be at least 60° or more, it can be ensured that the molten pool can fully fill the welding hole during welding, reducing welding defects such as incomplete penetration and incomplete fusion. The conical welding hole 1111 and the larger top angle design help to increase the cross-sectional area of the weld, thereby improving the strength and load capacity of the welded joint, and the connection between the compressor shell 40 and the boss 111 can be more secure. Using welding to fix the main bearing on the compressor shell 40 can form a relatively large contact area, with better security and shock resistance.

[0036] Further, the included angle between the center axes of any two conical welding holes 1111 is greater than or equal to 30°. By setting the included angle between the center axes of the conical welding holes 1111 to be greater than or equal to 30°, the relative positions between the conical welding holes 1111 are more dispersed, and the dispersed welding positions can more effectively resist external pressure and vibration, thereby improving the strength and stability of the welding site.

[0037] Further, the main bearing further comprises a shaft handle 20 vertically arranged at the center of the disc part 10, and the shaft handle 20 is integrally formed with the disc part 10. By arranging the shaft handle 20 integrally with the disc part 10, the main bearing can maintain higher structural strength and stability when bearing heavy load and vibration. The integrally formed structure helps to reduce stress concentration and improve the service life of the main bearing. The integrally formed shaft handle 20 and disc part 10 do not require additional connecting materials, which helps to reduce material waste and reduce production costs.

[0038] Further, the disc part 10 and the shaft handle 20 have surfaces for cooperating with the muffler 30 to form the sound damping cavity 301. The surfaces of the disc part 10 and the shaft handle 20 for forming the sound damping cavity 301 are concave-convex surfaces, which can be circular or petal-shaped. Referring to Figure 1 and Figure 3 , the concave-convex surfaces are petal-shaped, and referring to Figure 2 and Figure 4 , the concave-convex surfaces are circular. The concave-convex surfaces include a first concave-convex surface 201 and a second concave-convex surface 202, the first concave-convex surface 201 is located on the disc part 10, and the second concave-convex surface 202 is located on the shaft handle 20. Referring to Figure 5 , the first concave-convex surface 201 and the second concave-convex surface 202 are located just inside the sound damping cavity 301, and the position of the muffler 30 contacting the disc part 10 in the figure is also petal-shaped. The petal-shaped sound damping cavity structure has a larger sound damping area than the circular sound damping cavity structure, and the sound damping effect is better.

[0039] The design of the concave-convex surface increases the reflection path of sound in the sound damping cavity 301, so that the sound wave is continuously reflected and absorbed during propagation, thereby reducing the propagation strength and range of noise. The circular or petal-shaped concave-convex surface can more effectively guide the sound wave to perform complex reflection and interference in the sound damping cavity, further reducing noise. The design of the concave-convex surface can also change the acoustic impedance distribution in the sound damping cavity, which helps to reduce the reflection and resonance of sound, thereby further improving the sound damping effect.

[0040] Further, the disc part 10 further comprises an exhaust part 13, and the exhaust part 13 is provided with exhaust holes 131 at both ends. The design of the exhaust part 13 enables the disc part 10 to more effectively exhaust the gas accumulated inside, especially in devices such as compressors that require frequent exhaust. This design can significantly improve the exhaust efficiency. The arrangement of the exhaust holes 131 helps to optimize the airflow distribution around the disc part 10, reducing airflow turbulence and vortex phenomena.

[0041] Further, the disc part 10 further comprises a plurality of through holes 14 arranged circumferentially, the through holes 14 are arranged near the outer circumferential surface of the disc part 10, and the plurality of through holes 14 are used to provide weight reduction and buffering for the disc part 10. By arranging the plurality of through holes 14 on the disc part 10, the through holes 14 can serve as a buffering area to absorb and disperse the impact force from the outside, thereby protecting the disc part 10 from damage. The arrangement of the through holes 14 can also significantly reduce the weight of the main bearing.

[0042] Further, the disc part 10 further comprises a plurality of connecting holes 15 arranged circumferentially, the connecting holes 15 are arranged near the center of the disc part 10 from the through holes 14, and the plurality of connecting holes 15 are used to connect the main bearing with the muffler. By arranging the plurality of connecting holes 15, it can ensure that the connection between the main bearing and the muffler is more stable and reliable, and reduce equipment failure caused by loose connection. The arrangement of the connecting holes 15 can enhance the structural integrity between the main bearing and the muffler, so that they can jointly bear the load and impact force from the outside.

[0043] On the other hand, the application also discloses a compressor, referring to Figure 6 The shaft handle 20 of the main bearing is sleeved on the crankshaft 50 of the compressor, and the main bearing, the muffler 30, the cylinder 60 and the auxiliary bearing 70 form a compressor pump body. The compressor comprises the main bearing for the compressor described above. Therefore, the compressor comprises all the technical effects of the main bearing for the compressor described above, and the technical effects of the main bearing for the compressor have been described in detail in the foregoing, which will not be described here.

[0044] On the other hand, the application also discloses a refrigeration system, which comprises the compressor described above. Therefore, the compressor comprises all the technical effects of the compressor described above.

[0045] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0046] In addition, it needs to be explained that the use of "first", "second" and the like to limit the parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning if there is no further declaration, and therefore cannot be understood as limiting the protection scope of the utility model.

[0047] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A main bearing for a compressor, characterized by, The application relates to a main bearing for a compressor. The machining portion (11) comprises a machining surface (112), and the non-machining portion (12) comprises a blank surface (121), wherein the machining surface (112) and the blank surface (121) are both arc surfaces and are arranged concentrically with the disc portion (10), and the radius of the blank surface (121) is smaller than that of the machining surface (112).

2. The main bearing for a compressor of claim 1, wherein, The machining surface (112) occupies an arc greater than or equal to 1 / 18pi.

3. The main bearing for a compressor of claim 2, wherein, The maximum protruding height of the boss (111) is less than or equal to 6 mm.

4. The main bearing for a compressor of claim 1, wherein, The outer periphery of the disc portion (10) comprises at least three machining portions (11).

5. The main bearing for a compressor of claim 1, wherein, The boss (111) is provided with a conical welding hole (1111) for welding with a compressor shell (40), and the top angle of the conical welding hole (1111) is greater than or equal to 60 DEG.

6. The main bearing for a compressor of claim 1, wherein, The included angle between the central axes of any two conical welding holes (1111) is greater than or equal to 30 DEG.

7. The main bearing for a compressor of claim 6, wherein, The main bearing further comprises a shaft handle (20) vertically arranged at the center of the disc portion (10), and the shaft handle (20) is integrally formed with the disc portion (10).

8. The main bearing for a compressor according to any one of claims 1 to 7, characterized in that, The disc portion (10) and the shaft handle (20) have surfaces for cooperating with a muffler (30) to form a muffling cavity (301), and the surfaces of the disc portion (10) and the shaft handle (20) for forming the muffling cavity (301) are concave-convex surfaces.

9. The main bearing for a compressor of claim 8, wherein, The compressor comprises the main bearing for a compressor according to any one of claims 1 to 9.

10. A compressor characterized by, The refrigeration system comprises the compressor according to claim 10.

11. A refrigeration system characterized by, ​

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