A bearing structure, a pump body assembly and a scroll compressor

Abstract

The utility model relates to a kind of bearing structure, pump body assembly and scroll compressor, bearing structure includes main bearing seat, the bearing through-hole is opened in the axial direction and penetrates, the outer ring of the bearing through-hole is spaced and is provided with snap ring groove, the snap ring groove is coaxially arranged with the bearing through-hole;The outer side wall of the main bearing seat is recessed inward and forms gap part, the oil discharge passage is opened in the main bearing seat, one end of the oil discharge passage is communicated with the snap ring groove, the other end of the oil discharge passage is communicated with the gap part.The utility model discloses the bearing structure, the circulation of refrigeration oil can be improved, and then the residual amount of refrigeration oil in bearing structure is reduced, the resistance to moving parts is reduced, and then the input of compressor is reduced, the energy efficiency of compressor is improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a bearing structure, a pump assembly, and a scroll compressor. Background Technology

[0002] Scroll compressors are widely used in air conditioning systems due to their high efficiency, small size, and stable operation. Current scroll compressor pump structures require retaining ring grooves in the main bearing during operation, with retaining rings placed in these grooves to prevent the moving scroll from rotating. However, during operation, refrigerant oil residue can remain in the retaining ring grooves of the main bearing, easily causing the retaining ring to become immersed in the oil. This increases the sliding resistance of the retaining ring, correspondingly increasing the input force to the scroll compressor and ultimately reducing its energy efficiency. Utility Model Content

[0003] Based on this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a bearing structure, pump body assembly and scroll compressor, which can improve the circulation of refrigeration oil, thereby reducing the amount of refrigeration oil residue in the bearing structure, reducing the resistance to moving parts, thereby reducing the input force of the compressor and improving the energy efficiency of the compressor.

[0004] To achieve the above objectives, a first aspect of this utility model provides a bearing structure, including a main bearing housing. The main bearing housing has a through-hole extending along the axial direction. The outer ring of the through-hole is provided with retaining ring grooves at intervals, and the retaining ring grooves are coaxially arranged with the through-hole. The outer side wall of the main bearing housing is recessed inward to form a notch. An oil drain channel is provided in the main bearing housing. One end of the oil drain channel is connected to the retaining ring grooves, and the other end of the oil drain channel is connected to the notch.

[0005] Therefore, according to the bearing structure of this utility model embodiment, by opening a retaining ring groove in the main bearing housing for the retaining ring to rotate, and by recessing a notch on the outer wall of the main bearing housing, and by providing an oil drain channel connecting the retaining ring groove and the notch through the inner wall of the retaining ring groove, residual refrigerant oil in the retaining ring groove can be discharged from the retaining ring groove through the oil drain channel. The design of the notch provides sufficient space for the discharge of refrigerant oil, allowing the refrigerant oil in the retaining ring groove to be discharged to the notch through the oil drain channel. In other words, the bearing structure of this utility model embodiment, through the mutual cooperation between the retaining ring groove, the notch on the outer wall of the main bearing housing, and the oil drain channel, can effectively improve the circulation of refrigerant oil, thereby reducing the amount of residual refrigerant oil in the retaining ring groove, reducing the resistance of the refrigerant oil to the retaining ring, thereby reducing the compressor input force and improving the compressor energy efficiency.

[0006] In one embodiment, the two ends of the notch penetrate the two end faces of the main bearing housing along the axial direction. Therefore, according to the bearing structure of this embodiment, by designing the notch to axially penetrate the main bearing housing, the refrigeration oil can flow axially along the side wall of the notch when it flows out of the notch, thus improving the circulation efficiency of the refrigeration oil.

[0007] In one embodiment, the oil drain channel is a straight channel that extends radially outward from the inner wall of the retaining ring groove through the main bearing seat toward the notch.

[0008] In one embodiment, the oil drain channel is a straight channel, the extension of the center line of the oil drain channel passes through the axis of the bearing through hole, and the angle formed between the extension of the center line of the oil drain channel and the axis of the bearing through hole is β, satisfying the relationship: 75°≤β≤90°.

[0009] In one embodiment, the cross-sectional shape of the oil drain channel is one of the following: circular, elliptical, or square.

[0010] In one embodiment, the oil drain channel is a frustum-shaped channel that extends radially outward from the inner wall of the retaining ring groove toward the notch and penetrates the main bearing seat. The inner diameter of the oil drain channel increases sequentially from the retaining ring groove toward the notch.

[0011] In one embodiment, one end of the retaining ring groove penetrates through the end face of the main bearing housing.

[0012] In one embodiment, the end of the main bearing housing away from the retaining ring groove is integrally formed with a bearing shank, and the bearing through hole penetrates the bearing shank.

[0013] A second aspect of this utility model provides a pump body assembly, which includes the bearing structure described in any of the above embodiments, and further includes a moving scroll, a stationary scroll, and a crankshaft. The moving scroll is disposed on the bearing structure, and the crankshaft is used to drive the moving scroll to translate relative to the stationary scroll. The pump body assembly according to this utility model embodiment can improve the circulation of refrigeration oil, thereby reducing the amount of refrigeration oil residue in the bearing structure, reducing resistance to moving parts, and thus reducing the input force to the compressor and improving the compressor's energy efficiency.

[0014] A third aspect of this utility model provides a compressor comprising the pump assembly described in any of the preceding embodiments. The compressor according to this utility model improves the circulation of refrigeration oil, thereby reducing the amount of residual refrigeration oil in the bearing structure, reducing resistance to moving parts, and thus reducing the input force of the compressor and improving its energy efficiency.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of the bearing structure according to an embodiment of the present utility model;

[0017] Figure 2 This is a second schematic diagram of the bearing structure according to an embodiment of the present utility model;

[0018] Figure 3 This is the third schematic diagram of the bearing structure according to an embodiment of the present utility model;

[0019] Figure 4 for Figure 3 A schematic cross-sectional view along direction AA is shown.

[0020] Figure 5 This is a schematic diagram of the pump body assembly according to an embodiment of the present utility model;

[0021] Figure 6 This is an exploded view of the pump body assembly according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Main bearing housing; 11. Bearing through hole; 12. Snap ring groove; 13. Notch; 14. Oil drain channel; 15. Bearing shank; 20. Moving scroll; 30. Stationary scroll; 40. Crankshaft. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0026] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In related technologies, scroll compressors are widely used in air conditioning systems due to their high efficiency, small size, and stable operation. Current scroll compressor pump body structures require retaining ring grooves in the main bearing during operation, with retaining rings placed in these grooves to prevent the moving scroll from rotating. However, during operation, refrigerant oil residue can remain in the retaining ring grooves of the main bearing, easily causing the retaining ring to become immersed in the oil. This increases the sliding resistance of the retaining ring, correspondingly increasing the input force to the scroll compressor and thus reducing its energy efficiency.

[0028] Therefore, this utility model provides a bearing structure, a pump assembly, and a scroll compressor. The bearing structure, pump assembly, and scroll compressor according to this utility model improve the circulation of refrigeration oil, thereby reducing the amount of residual refrigeration oil in the bearing structure, reducing resistance to moving parts, and thus reducing the input force to the compressor and improving the compressor's energy efficiency.

[0029] Please see Figures 1 to 6 The first aspect of this utility model provides a bearing structure, including a main bearing housing 10. The main bearing housing 10 has a bearing through hole 11 extending through it in the axial direction. The outer ring of the bearing through hole 11 is provided with retaining ring grooves 12 at intervals. The retaining ring grooves 12 are coaxially arranged with the bearing through hole 11. The outer side wall of the main bearing housing 10 is recessed inward to form a notch 13. An oil drain channel 14 is provided in the main bearing housing 10. One end of the oil drain channel 14 is connected to the retaining ring grooves 12, and the other end of the oil drain channel 14 is connected to the notch 13. The two ends of the notch 13 in the axial direction respectively penetrate the two end faces of the main bearing housing 10.

[0030] Therefore, according to the bearing structure of this utility model embodiment, by opening a retaining ring groove 12 for the retaining ring to rotate in the main bearing housing 10, and by recessing a notch 13 on the outer side wall of the main bearing housing 10, and by providing an oil drain channel 14 through the inner wall of the retaining ring groove 12 and the notch 13, the residual refrigerant oil in the retaining ring groove 12 can be discharged from the retaining ring groove 12 through the oil drain channel 14, and the design of the notch 13 provides sufficient space for the discharge of refrigerant oil, so that the refrigerant oil in the retaining ring groove 12 is discharged to the notch 13 through the oil drain channel 14; that is to say, the bearing structure of this utility model embodiment, through the mutual cooperation between the retaining ring groove 12, the notch 13 on the outer side wall of the main bearing housing 10, and the oil drain channel 14, can effectively improve the circulation of refrigerant oil, thereby reducing the amount of residual refrigerant oil in the retaining ring groove 12, reducing the resistance of the refrigerant oil to the retaining ring, thereby reducing the compressor input and improving the compressor energy efficiency.

[0031] Optionally, in some embodiments of this utility model, the oil drain channel 14 is a straight channel, and the oil drain channel 14 extends radially outward from the inner wall of the retaining ring groove 12 toward the notch 13 through the main bearing housing 10. That is, in these embodiments, the length direction of the oil drain channel 14 is parallel to the radial direction of the main bearing housing 10.

[0032] Optionally, in some embodiments of this utility model, the oil drain channel 14 is a straight channel, the extension of the center line of the oil drain channel 14 passes through the axis of the bearing through hole 11, and the angle formed between the extension of the center line of the oil drain channel 14 and the axis of the bearing through hole 11 is β, satisfying the relationship: 75°≤β≤90°. That is, in these embodiments, the length direction of the oil drain channel 14 is parallel or inclined relative to the radial direction of the main bearing housing 10.

[0033] Optionally, in some embodiments of the present invention, the cross-sectional shape of the oil drain channel 14 is one of a circle, an ellipse, or a square.

[0034] Optionally, in some embodiments of the present invention, the oil drain channel 14 is a frustum-shaped channel, the oil drain channel 14 extends radially outward from the inner wall of the retaining ring groove 12 toward the notch 13 and passes through the main bearing seat 10, and the inner diameter of the oil drain channel 14 increases sequentially from the retaining ring groove 12 toward the notch 13.

[0035] Optionally, in some embodiments of this utility model, one end of the retaining ring groove 12 penetrates through the end face of the main bearing housing 10. In addition, a bearing shank 15 is integrally formed at the end of the main bearing housing 10 away from the retaining ring groove 12, and a bearing through hole 11 penetrates through the bearing shank 15.

[0036] The following is combined Figures 1 to 6The following is a detailed description of a specific embodiment of the bearing structure according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.

[0037] This embodiment provides a bearing structure, including a main bearing housing 10. The main bearing housing 10 has a bearing through hole 11 extending through it in the axial direction. The outer ring of the bearing through hole 11 is provided with retaining ring grooves 12 at intervals. The retaining ring grooves 12 are coaxially arranged with the bearing through hole 11. The outer side wall of the main bearing housing 10 is recessed inward to form a notch 13. An oil drain channel 14 is provided in the main bearing housing 10. One end of the oil drain channel 14 is connected to the retaining ring grooves 12, and the other end of the oil drain channel 14 is connected to the notch 13. The two ends of the notch 13 in the axial direction respectively penetrate the two end faces of the main bearing housing 10.

[0038] Specifically, in this embodiment, the oil drain channel 14 is a straight channel, extending radially outward from the inner wall of the retaining ring groove 12 towards the notch 13 and penetrating the main bearing housing 10; secondly, the cross-sectional shape of the oil drain channel 14 is circular; furthermore, in this embodiment, one end of the retaining ring groove 12 penetrates the end face of the main bearing housing 10. Additionally, a bearing shank 15 is integrally formed at the end of the main bearing housing 10 away from the retaining ring groove 12, and a bearing through hole 11 penetrates the bearing shank 15.

[0039] The following is combined Figures 1 to 6 The following is a detailed description of a specific embodiment of the bearing structure according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.

[0040] This embodiment provides a bearing structure, including a main bearing housing 10. The main bearing housing 10 has a bearing through hole 11 extending through it in the axial direction. The outer ring of the bearing through hole 11 is provided with retaining ring grooves 12 at intervals. The retaining ring grooves 12 are coaxially arranged with the bearing through hole 11. The outer side wall of the main bearing housing 10 is recessed inward to form a notch 13. An oil drain channel 14 is provided in the main bearing housing 10. One end of the oil drain channel 14 is connected to the retaining ring grooves 12, and the other end of the oil drain channel 14 is connected to the notch 13. The two ends of the notch 13 in the axial direction respectively penetrate the two end faces of the main bearing housing 10.

[0041] Specifically, in this embodiment, the extension of the centerline of the oil drain channel 14 passes through the axis of the bearing through hole 11, and the angle formed between the extension of the centerline of the oil drain channel 14 and the axis of the bearing through hole 11 is β, satisfying the relationship: β = 75°; secondly, the cross-sectional shape of the oil drain channel 14 is circular; furthermore, in this embodiment, one end of the retaining ring groove 12 penetrates through the end face of the main bearing housing 10. Additionally, a bearing shank 15 is integrally formed at the end of the main bearing housing 10 away from the retaining ring groove 12, and the bearing through hole 11 penetrates through the bearing shank 15.

[0042] The following is combined Figures 1 to 6 The following is a detailed description of a specific embodiment of the bearing structure according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.

[0043] This embodiment provides a bearing structure, including a main bearing housing 10. The main bearing housing 10 has a bearing through hole 11 extending through it in the axial direction. The outer ring of the bearing through hole 11 is provided with retaining ring grooves 12 at intervals. The retaining ring grooves 12 are coaxially arranged with the bearing through hole 11. The outer side wall of the main bearing housing 10 is recessed inward to form a notch 13. An oil drain channel 14 is provided in the main bearing housing 10. One end of the oil drain channel 14 is connected to the retaining ring grooves 12, and the other end of the oil drain channel 14 is connected to the notch 13. The two ends of the notch 13 in the axial direction respectively penetrate the two end faces of the main bearing housing 10.

[0044] Specifically, in this embodiment, the oil drain channel 14 is a frustum-shaped channel. The oil drain channel 14 extends radially outward from the inner wall of the retaining ring groove 12 toward the notch 13 and penetrates the main bearing seat 10. The inner diameter of the oil drain channel 14 increases sequentially from the retaining ring groove 12 toward the notch 13. Furthermore, the cross-sectional shape of the oil drain channel 14 is circular. In addition, one end of the retaining ring groove 12 in this embodiment penetrates the end face of the main bearing seat 10. Moreover, a bearing shank 15 is integrally formed at the end of the main bearing seat 10 away from the retaining ring groove 12, and a bearing through hole 11 penetrates the bearing shank 15.

[0045] A second aspect of this utility model provides a pump body assembly, which includes the bearing structure described above, and further includes a moving scroll 20, a stationary scroll 30, and a crankshaft 40. The moving scroll 20 is disposed on the bearing structure, and the crankshaft 40 is used to drive the moving scroll 20 to translate relative to the stationary scroll 30. The pump body assembly according to this utility model embodiment can improve the circulation of refrigeration oil, thereby reducing the amount of refrigeration oil residue in the bearing structure, reducing resistance to moving parts, and thus reducing the input force to the compressor and improving the compressor's energy efficiency.

[0046] A third aspect of this utility model provides a compressor that includes the pump body assembly of any of the above-mentioned embodiments. The compressor according to this utility model embodiment can improve the circulation of refrigeration oil, thereby reducing the amount of refrigeration oil residue in the bearing structure, reducing resistance to moving parts, and thus reducing the input force of the compressor and improving the compressor's energy efficiency.

[0047] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the bearing structure, pump body assembly, and scroll compressor of this utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A bearing structure, characterized in that: The bearing includes a main bearing housing, which has a bearing through hole extending through it in the axial direction. The outer ring of the bearing through hole is provided with retaining ring grooves at intervals, and the retaining ring grooves are coaxially arranged with the bearing through hole. The outer side wall of the main bearing housing is recessed inward to form a notch. An oil drain channel is provided in the main bearing housing. One end of the oil drain channel is connected to the retaining ring grooves, and the other end of the oil drain channel is connected to the notch.

2. The bearing structure according to claim 1, characterized in that: The two ends of the notch in the axial direction respectively penetrate the two end faces of the main bearing housing.

3. The bearing structure according to claim 1, characterized in that: The oil drain channel is a straight channel that extends radially outward from the inner wall of the retaining ring groove through the main bearing seat toward the notch.

4. The bearing structure according to claim 1, characterized in that: The oil drain channel is a straight channel, and the extension of the center line of the oil drain channel passes through the axis of the bearing through hole. The angle formed between the extension of the center line of the oil drain channel and the axis of the bearing through hole is β, which satisfies the relationship: 75°≤β≤90°.

5. The bearing structure according to claim 1, characterized in that: The cross-sectional shape of the oil drain channel is one of the following: circular, elliptical, or square.

6. The bearing structure according to claim 1, characterized in that: The oil drain channel is a frustum-shaped channel that extends radially outward from the inner wall of the retaining ring groove toward the notch and passes through the main bearing seat. The inner diameter of the oil drain channel increases sequentially from the retaining ring groove toward the notch.

7. The bearing structure according to claim 1, characterized in that: One end of the retaining ring groove penetrates through the end face of the main bearing housing.

8. The bearing structure according to claim 7, characterized in that: The main bearing housing has an integrally formed bearing shank at the end away from the retaining ring groove, and the bearing through hole penetrates the bearing shank.

9. A pump body assembly, characterized in that: The bearing structure according to any one of claims 1 to 8 further includes a moving scroll, a stationary scroll, and a crankshaft, wherein the moving scroll is disposed on the bearing structure and the crankshaft is used to drive the moving scroll to translate relative to the stationary scroll.

10. A scroll compressor, characterized in that: Includes the pump body assembly as described in claim 9.

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