Driving assembly for air compression of air conditioner compressor

Abstract

The invention discloses a driving assembly for air compression of an air conditioner compressor. The driving assembly comprises a rotor shell, a rotor, a main rotating shaft and a limiting assembly. The rotor is installed in the rotor shell, the main rotating shaft is arranged at one end of the rotor, and the limiting assembly is arranged on the main rotating shaft in a sleeving mode. The limiting assembly comprises a limiting shell, a supporting circular ring, a plurality of auxiliary pins and a lubricating structure, the movable disc is arranged on the auxiliary pins in a sleeving mode so that the movable disc can be limited within a certain range all the time in the rotating process, the situation that the movable disc loses control due to the influence of eccentric force is avoided, the main bearing is installed by arranging multiple layers of stepped grooves, and therefore the stability of the bearing is improved. The rotating process is more stable, and the situation that abnormal rotation affects the compression efficiency and the service life of parts is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner compressor, in particular to a driving assembly for air conditioner compressor to compress air. BACKGROUND

[0002] With the development of new energy vehicles, scroll compressors will be more widely used in the field of automobile air conditioners. When the scroll compressor moving disc is in eccentric motion, the moving disc will not be controlled during rotation due to the action of the eccentric force, which will affect the normal meshing of the moving disc and the stationary disc.

[0003] In order to solve the above technical problems, a driving assembly for air conditioner compressor to compress air is needed. SUMMARY

[0004] The present application relates to the technical field of air conditioner compressor, in particular to a driving assembly for air conditioner compressor to compress air.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: a driving assembly for air conditioner compressor to compress air is installed in the compressor shell, which comprises a rotor shell, a rotor, a main shaft and a limiting assembly. The rotor is installed in the rotor shell, the main shaft is arranged at one end of the rotor, and the limiting assembly is sleeved on the main shaft. The limiting assembly comprises a limiting shell, a supporting ring, a plurality of auxiliary pins and a lubricating structure. A limiting ring groove is formed in the main shaft, the limiting shell comprises a small end and a large end, a plurality of stepped grooves are formed in the limiting shell from the small end to the large end, the small end of the limiting shell is sleeved on the main shaft and located in the limiting ring groove, the supporting ring is fixed to the large end of the limiting shell, the plurality of auxiliary pins are fixed to the supporting ring and evenly arranged around the supporting ring near the inner circle with the main shaft as the axis, and the lubricating structure is arranged on the supporting ring.

[0006] Further, the driving assembly further comprises an auxiliary shaft, a main bearing, an auxiliary bearing and an eccentric pin. The auxiliary shaft is arranged at the other end of the rotor, the main bearing is sleeved on the main shaft and embedded in the stepped groove near the large end, and is connected with the inner wall of the limiting shell in interference, the auxiliary bearing is sleeved on the auxiliary shaft, the eccentric pin is fixed to the end of the main shaft and arranged at a position away from the axis of the main shaft, and a counterweight is sleeved on the eccentric pin.

[0007] Further, the compressor shell bottom is provided with an annular protrusion with a notch, the auxiliary bearing is embedded in the inner circular groove formed between the annular protrusion and the compressor shell bottom, and is connected with the annular protrusion in interference.

[0008] Further, the lubricating structure comprises a first oil groove, a second oil groove and a wear-resistant sheet, the first oil groove and the second oil groove are both arranged on the supporting ring and are respectively located between two adjacent auxiliary pins, a plurality of through holes are arranged on the wear-resistant sheet, the wear-resistant sheet is sleeved on the auxiliary pin through the through holes, and an arc-shaped oil groove is arranged at a position close to the edge of the wear-resistant sheet.

[0009] Further, the first oil groove and the second oil groove both comprise a large oil groove and a small oil groove, the large oil groove extends from the inner circle of the supporting ring to the edge close to the outer circle, and the small oil groove is arranged at a position close to the outer circle of the supporting ring and is communicated with the large oil groove.

[0010] Further, the large oil groove and the small oil groove of the first oil groove are both linear, the small oil groove of the second oil groove is arc-shaped, and the two ends of the arc-shaped oil groove are respectively coincident with the small oil grooves of the first oil groove and the second oil groove.

[0011] Further, the through holes are correspondingly matched with the auxiliary pins in size.

[0012] Further, the large end of the limiting shell is provided in a polygonal shape.

[0013] Beneficial effects: the driving disc is sleeved on the auxiliary pin, so that the driving disc is always limited within a certain range during rotation and is not out of control due to the influence of eccentric force, the main bearing is installed through the multi-layer stepped groove, so that the rotation process is more stable, abnormal rotation is avoided, and the compression efficiency and the service life of the parts are affected, and the lubricating structure is further arranged to prevent dry friction and abnormal sound in the limiting assembly during rotation due to lack of lubricating oil, and the service life of the parts and the compression efficiency are affected. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the driving assembly of the air conditioner compressor for compressing air. Figure 2 It is a three-dimensional structure schematic view of the driving assembly after removing the rotor shell. Figure 3 It is a three-dimensional structure schematic view of the inside of the limiting shell. Figure 4 It is a three-dimensional structure schematic view of the supporting ring and the lubricating structure. Figure 5 It is a three-dimensional structure schematic view of the annular protrusion at the bottom of the compressor shell. In the figure: 1, rotor housing; 2, rotor; 3, main rotating shaft; 4, limiting assembly; 41, limiting shell; 42, supporting ring; 43, auxiliary pin; 44, lubricating structure; 44a, first oil groove; 44b, second oil groove; 441, wear-resistant sheet; 5, auxiliary rotating shaft; 6, main bearing; 7, auxiliary bearing; 8, eccentric pin; 9, counterweight. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0016] Reference Figures 1-5 In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: a driving assembly for compressing air of an air conditioner compressor, which is installed in a compressor shell and comprises a rotor housing 1, a rotor 2, a main rotating shaft 3 and a limiting assembly 4. The rotor 2 is installed in the rotor housing 1, the main rotating shaft 3 is arranged at one end of the rotor 2, and the limiting assembly 4 is sleeved on the main rotating shaft 3. The limiting assembly 4 comprises a limiting shell 41, a supporting ring 42, a plurality of auxiliary pins 43 and a lubricating structure 44. A limiting ring groove is formed on the main rotating shaft 3. The limiting shell 41 comprises a small-end and a large-end. A plurality of stepped grooves are formed from the small-end to the large-end in ascending order of diameter. The small-end of the limiting shell 41 is sleeved on the main rotating shaft 3 and located in the limiting ring groove. The supporting ring 42 is fixed at the large-end of the limiting shell 41. The plurality of auxiliary pins 43 are fixed on the supporting ring 42 and evenly surround the supporting ring 42 at a position close to the inner circle of the supporting ring 42 with the main rotating shaft 3 as the axis. The lubricating structure 44 is arranged on the supporting ring 42. The dynamic disc is sleeved on the auxiliary pin 43 so that the dynamic disc is always limited within a certain range during rotation and will not lose control due to the influence of eccentric force. The large-end of the limiting shell 41 is polygonal. The polygonal shape is in interference with the inner wall of the compressor shell to ensure that the limiting shell 41 will not rotate during rotation. The driving assembly further comprises an auxiliary rotating shaft 5, a main bearing 6, an auxiliary bearing 7 and an eccentric pin 8. The auxiliary rotating shaft 5 is arranged at the other end of the rotor 2. The main bearing 6 is sleeved on the main rotating shaft 3 and embedded in the stepped groove close to the large-end. The main bearing 6 is in interference connection with the inner wall of the limiting shell 41. The main bearing 6 is installed by arranging a plurality of stepped grooves, so that the rotation process is more stable, and abnormal rotation is avoided to affect the compression efficiency and the service life of the components. The auxiliary bearing 7 is sleeved on the auxiliary rotating shaft 5 to further ensure the stability and balance of the rotation process. The eccentric pin 8 is fixed at the end of the main rotating shaft 3 and arranged at a position away from the axis of the main rotating shaft 3. The counterweight 9 is sleeved on the eccentric pin 8 to balance the eccentric force of the eccentric pin 8 during eccentric motion and ensure the stable rotation of the dynamic disc.

[0017] The bottom of the compressor shell is provided with an annular protrusion with a notch, the notch is arranged to ensure that lubricating oil can enter the auxiliary bearing 7 to avoid dry friction, the auxiliary bearing 7 is embedded in the inner circular groove formed between the annular protrusion and the bottom of the compressor shell, and is connected with the annular protrusion in an interference fit, to ensure stability and balance during rotation.

[0018] In addition, in order to prevent dry friction and abnormal noise of each component in the limiting assembly 4 during rotation due to lack of lubricating oil, affecting the service life of each component and the compression efficiency, the lubricating structure 44 includes a first oil groove 44a, a second oil groove 44b and a wear-resistant sheet 441, the first oil groove 44a and the second oil groove 44b are both arranged on the support ring 42 and are respectively located between two adjacent auxiliary pins 43, the wear-resistant sheet 441 is provided with a plurality of through holes, which are sleeved on the auxiliary pins 43, the through holes and the auxiliary pins 43 are matched in size and position, the wear-resistant sheet 441 is provided with an arc-shaped oil groove at a position close to the edge, the first oil groove 44a and the second oil groove 44b are connected through the arc-shaped oil groove, so that the oil-gas mixture is brought to other components such as the moving disc and the stationary disc through the first oil groove 44a, the second oil groove 44b and the arc-shaped oil groove during the operation of the compressor, preventing dry friction due to lack of lubricating oil and affecting the service life of each component and the compression efficiency, the first oil groove 44a and the second oil groove 44b both include a large oil groove and a small oil groove, the large oil groove extends from the inner circle of the support ring 42 to the edge close to the outer circle, the small oil groove is arranged at a position close to the outer circle of the support ring 42 and is connected with the large oil groove, the large oil groove and the small oil groove of the first oil groove 44a are linear, the small oil groove of the second oil groove 44b is arc-shaped, and the two ends of the arc-shaped oil groove coincide with the small oil grooves of the first oil groove 44a and the second oil groove 44b respectively, facilitating the flow of the oil-gas mixture along the arc-shaped oil groove.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements for some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A drive assembly for compressing air by an air conditioning compressor mounted in a compressor housing, characterized by, The utility model provides a compressor rotor limiting assembly, which comprises a rotor shell (1), a rotor (2), a main rotating shaft (3) and a limiting assembly (4), wherein the rotor (2) is installed in the rotor shell (1), the main rotating shaft (3) is arranged at one end of the rotor (2), and the limiting assembly (4) is sleeved on the main rotating shaft (3).

2. The drive assembly of claim 1, wherein: The driving assembly further comprises an auxiliary rotating shaft (5), a main bearing (6), an auxiliary bearing (7) and an eccentric pin (8), wherein the auxiliary rotating shaft (5) is arranged at the other end of the rotor (2), the main bearing (6) is sleeved on the main rotating shaft (3) and embedded in the stepped groove close to the large end, and is in interference connection with the inner wall of the limiting shell (41), the auxiliary bearing (7) is sleeved on the auxiliary rotating shaft (5), the eccentric pin (8) is fixed at the end of the main rotating shaft (3) and arranged at a position away from the axis of the main rotating shaft (3), and a counterweight (9) is sleeved on the eccentric pin (8).

3. The drive assembly of claim 2, wherein: The compressor shell bottom is provided with an annular protrusion with a notch, the auxiliary bearing (7) is embedded in the inner circular groove formed between the annular protrusion and the compressor shell bottom, and is in interference connection with the annular protrusion.

4. The drive assembly of claim 1, wherein: The lubricating structure (44) comprises a first oil groove (44a), a second oil groove (44b) and a wear-resistant sheet (441), the first oil groove (44a) and the second oil groove (44b) are both arranged on the supporting ring (42) and located between two adjacent auxiliary pins (43), a plurality of through holes are arranged on the wear-resistant sheet (441) and used for sleeving the auxiliary pins (43), an arc-shaped oil groove is arranged at the position close to the edge of the wear-resistant sheet (441), and the first oil groove (44a) and the second oil groove (44b) are in communication through the arc-shaped oil groove.

5. The drive assembly of claim 4, wherein: The first oil groove (44a) and the second oil groove (44b) both comprise a large oil groove and a small oil groove, the large oil groove extends from the inner circle of the supporting ring (42) to the edge close to the outer circle, and the small oil groove is arranged at the position close to the outer circle of the supporting ring (42) and in communication with the large oil groove.

6. The drive assembly of claim 5, wherein: The large oil groove and the small oil groove of the first oil groove (44a) are linear, the small oil groove of the second oil groove (44b) is arc-shaped, and the two ends of the arc-shaped oil groove are coincided with the small oil groove of the first oil groove (44a) and the small oil groove of the second oil groove (44b) respectively.

7. The drive assembly of claim 4, wherein: The through holes are in size adaptation with the auxiliary pins (43) at corresponding positions.

8. The drive assembly of claim 1, wherein: The large end of the limiting shell (41) is provided in a polygonal shape.

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