A shaft support assembly, compressor and air conditioner

Abstract

The application provides an axle support assembly, a compressor and an air conditioner, which comprises: a rotating shaft and a thrust bearing supported on the lower thrust surface of the rotating shaft, and the surface of the thrust bearing supporting the rotating shaft is the upper thrust surface; the inside of the rotating shaft is provided with a central oil hole extending from one axial end of the rotating shaft to the other axial end, and the inside of the rotating shaft is further provided with a first oil guide channel and an oil return channel, one end of the first oil guide channel communicates with the central oil hole, one end of the oil return channel communicates with the first oil guide channel and the other end extends to the upper thrust surface of the thrust bearing, so as to lubricate the space between the lower thrust surface of the rotating shaft and the upper thrust surface of the thrust bearing. According to the application, a uniform oil film can be formed on the thrust surface, the effective lubrication between the thrust bearing and the rotating shaft is realized, the thrust noise is reduced, and the performance and reliability of the compressor are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressor, in particular to a shaft support assembly, a compressor and an air conditioner. BACKGROUND

[0002] In the prior art, the lubricating oil of the crankshaft is supplied to the bearings at different positions through the oil supply channel on the crankshaft to reduce the friction loss. Since the scroll compressor belongs to rotary motion, it has a driving shaft, a thrust bearing and other components. The driving shaft rotates in the compressor, and the thrust bearing supports the driving shaft upward. Due to the gravity of the driving shaft and the pressure difference between the upper space and the lower space of the driving shaft, the load-carrying capacity of the thrust bearing component is increased. Therefore, an oil groove is arranged on the thrust bearing. When the driving shaft rotates, the lubricating oil flows out of the oil film through the oil outlet hole of the driving shaft sub-shaft neck to lubricate the lower support bearing hole, and then lubricates the thrust bearing to reduce friction, and then returns to the oil pool. The oil groove cannot effectively and comprehensively form an oil film, which still causes wear on the sliding surface of the driving shaft and the thrust bearing, and generates thrust noise, affecting the reliability of the compressor.

[0003] Due to the technical problems that the oil groove of the scroll compressor in the prior art cannot effectively and comprehensively form an oil film, which still causes wear on the sliding surface of the driving shaft and the thrust bearing, and generates thrust noise, the present application provides a shaft support assembly, a compressor and an air conditioner. SUMMARY

[0004] Therefore, the present application aims to overcome the defects in the prior art that the driving shaft and the thrust bearing are worn, and the existing oil groove cannot effectively lubricate them, which still causes the wear to be aggravated, thereby providing a shaft support assembly, a compressor and an air conditioner.

[0005] In order to solve the above problems, the present application provides a shaft support assembly, which comprises:

[0006] A rotating shaft and a thrust bearing supported on the lower thrust surface of the rotating shaft, the surface of the thrust bearing supporting the rotating shaft being the upper thrust surface; the rotating shaft is internally provided with a central oil hole extending from one end of the rotating shaft to the other end, the rotating shaft is further internally provided with a first oil guide channel and an oil return channel, one end of the first oil guide channel being in communication with the central oil hole, one end of the oil return channel being in communication with the first oil guide channel and the other end extending to the upper thrust surface of the thrust bearing, so as to lubricate between the lower thrust surface of the rotating shaft and the upper thrust surface of the thrust bearing.

[0007] In some embodiments, the first oil guide channel is a straight channel, and an angle between an extending direction of the first oil guide channel and an axis of the rotating shaft is within [0, 90°].

[0008] In some embodiments, the first oil guide channel extends along a radial direction of the rotating shaft, and the oil return channel extends along an axial direction of the rotating shaft, and an upper end of the oil return channel communicates with the first oil guide channel, and a lower end of the oil return channel extends to the lower thrust surface of the rotating shaft.

[0009] In some embodiments, a radial inner end of the first oil guide channel communicates with the central oil hole, a radial outer end of the first oil guide channel is spaced apart from a radial outer periphery of the rotating shaft by a preset distance, and the preset distance is greater than 0, and an upper end of the oil return channel communicates with the radial outer end of the first oil guide channel, or the upper end of the oil return channel communicates to a position between the radial outer end and the radial inner end of the first oil guide channel.

[0010] In some embodiments, a radial inner end of the first oil guide channel communicates with the central oil hole, and a radial outer end of the first oil guide channel communicates to a radial outer periphery wall of the rotating shaft, and an upper end of the oil return channel communicates to a position between the radial outer end and the radial inner end of the first oil guide channel.

[0011] In some embodiments, an oil groove is further formed on the upper thrust surface of the thrust bearing, and a lower end of the oil return channel communicates with the oil groove.

[0012] In some embodiments, the oil groove is a sunken groove formed on the upper thrust surface, the sunken groove is an annular groove structure, and the annular groove is at least one; and / or, an oil discharge channel is further formed on the thrust bearing, one end of the oil discharge channel communicates with the oil groove, and the other end of the oil discharge channel communicates to a lower side of the thrust bearing.

[0013] In some embodiments, a lower support and a lower support bearing are further included, the lower support bearing is sleeved on an outer periphery of the rotating shaft to radially support the rotating shaft, the lower support is sleeved on an outer periphery of the lower support bearing, when the radial outer end of the first oil guide channel communicates to the radial outer periphery wall of the rotating shaft, the lower support bearing is opposite to and communicates with the radial outer end of the first oil guide channel, so that oil can pass through the first oil guide channel to the lower support bearing to lubricate the lower support bearing.

[0014] In some embodiments, the lower bracket bearing is provided with a communication hole, the lower bracket is internally provided with an oil passage, the thrust bearing is internally provided with a second oil guide passage, one end of the oil passage is communicated with the first oil guide passage through the communication hole, the other end of the oil passage is communicated with one end of the second oil guide passage, and the other end of the second oil guide passage is communicated with the oil groove.

[0015] In some embodiments, the communication hole is a through hole penetrating from the radial inner periphery of the lower bracket bearing to the radial outer periphery thereof, the oil passage includes a first oil passage extending in the radial direction and a second oil passage extending in the axial direction, the second oil guide passage includes a second oil guide passage one extending in the axial direction, a second oil guide passage two, and a second oil guide passage three extending in the radial direction, and the first oil guide passage, the communication hole, the first oil passage, the second oil passage, the second oil guide passage one, the second oil guide passage three, and the second oil guide passage two are communicated in sequence.

[0016] In some embodiments, one end of the first oil passage is communicated with the communication hole, the other end of the first oil passage extends radially outward to be communicated with the upper end of the second oil passage, the second oil passage extends in the vertical direction inside the lower bracket, the lower end of the second oil passage extends to the lower end surface of the lower bracket and is communicated with the upper end of the second oil guide passage one, the second oil guide passage one extends in the vertical direction to the inside of the thrust bearing, the lower end of the second oil guide passage one is communicated with the second oil guide passage three, the second oil guide passage three extends in the radial direction inside the thrust bearing, the lower end of the second oil guide passage two is communicated with the radial inner end of the second oil guide passage three, and the second oil guide passage two extends in the vertical direction to the upper end thereof communicated with the oil groove (191).

[0017] The application also provides a compressor comprising the shaft support assembly according to any one of the preceding.

[0018] The application also provides an air conditioner comprising the compressor according to the preceding.

[0019] The shaft support assembly, the compressor, and the air conditioner provided by the application have the following beneficial effects:

[0020] 1. The present application can communicate with the central oil hole to introduce oil by opening the first oil guide channel and the oil return channel in the rotating shaft, and effectively guide the oil to the lower thrust surface of the rotating shaft and the upper thrust surface of the thrust bearing through the oil return channel in the rotating shaft, thereby effectively forming a uniform oil film on the thrust surface, effectively lubricating the thrust bearing and the rotating shaft, reducing the friction loss between the sliding surface of the driving shaft and the thrust bearing, thereby effectively reducing the thrust noise and improving the performance and reliability of the compressor; therefore, the driving shaft of the present application can guide the lubricating oil back to the sliding surface of the thrust bearing to form an oil film during high-speed rotation, greatly reducing the friction between the thrust bearing and the sliding surface of the driving shaft, greatly reducing the thrust noise, improving the performance and reliability of the compressor.

[0021] 2. The present application can also effectively guide the oil to the lower thrust surface of the rotating shaft and the upper thrust surface of the thrust bearing by the communication hole provided on the lower support bearing of the rotating shaft, the oil passage channel opened on the lower support, and the second oil guide channel opened in the thrust bearing, and enter the oil tank, thereby further increasing the oil supply to the thrust surface, supplying oil to the thrust surface from both the inside and outside of the rotating shaft, increasing the thickness of the oil film formed between the thrust bearing and the rotating shaft, improving the lubrication effect between the thrust bearing and the rotating shaft, further reducing the friction between the thrust bearing and the sliding surface of the driving shaft, further reducing the thrust noise, and further improving the performance of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a sectional view of the compressor of the present application;

[0023] Figure 2 is a partial enlarged view of the shaft support assembly (thrust bearing part) of embodiment 1 of the present application;

[0024] Figure 3 is a structure diagram of the driving shaft part in Figure 2 ;

[0025] Figure 4 is a partial enlarged view of the shaft support assembly (thrust bearing part) of embodiment 2 of the present application;

[0026] Figure 5 is a structure diagram of the driving shaft part in Figure 4 ;

[0027] Figure 6 is a partial enlarged view of the shaft support assembly (thrust bearing part) of embodiment 3 of the present application;

[0028] Figure 7 is a top view structure diagram of the thrust bearing part in Figure 6 .

[0029] The reference numerals indicate:

[0030] 1. Upper cover; 2. Stationary scroll; 3. Upper bracket; 4. Rotor; 5. Lower support ring; 6. Lower cover; 7. Lower bracket; 704. Oil passage; 8. Stator; 9. Rotating shaft; 91. Lower thrust surface; 901. Center oil hole; 902. Oil return passage; 903. First oil guide passage; 10. Cross ring; 11. Orbital scroll; 12. Housing; 13. Sliding bearing; 14. Oil pump; 15. Balance block cover; 16. Enthalpy increase tube assembly; 17. Intake pipe assembly; 18. Balance block; 19. Thrust bearing; 191. Oil groove; 192. Second oil guide passage; 193. Oil drain passage; 194. Upper thrust surface; 20. Lower bracket bearing; 201. Connecting hole. DETAILED DESCRIPTION

[0031] like Figures 1-7 As shown, the present invention provides a shaft support assembly, which includes:

[0032] The rotating shaft 9 and the thrust bearing 19 (preferably the lower thrust bearing), the thrust bearing 19 is supported on the lower thrust surface 91 of the rotating shaft 9, and the surface of the thrust bearing 19 supporting the rotating shaft 9 is the upper thrust surface 194; the interior of the rotating shaft 9 is provided with a center oil hole 901, and the center oil hole 901 extends from one axial end to the other axial end of the rotating shaft 9, and the interior of the rotating shaft 9 is also provided with a first oil guide channel 903 and an oil return channel 902, one end of the first oil guide channel 903 is connected to the center oil hole 901, and one end of the oil return channel 902 is connected to the first oil guide channel 903 and the other end extends to the upper thrust surface 194 of the thrust bearing 19, so as to lubricate the lower thrust surface 91 of the rotating shaft 9 and the upper thrust surface 194 of the thrust bearing 19.

[0033] The present invention opens a first oil guide channel and an oil return channel inside the rotating shaft, which can be connected to the central oil hole to introduce oil, and effectively guides the oil to between the lower thrust surface at the lower end of the rotating shaft and the upper thrust surface of the thrust bearing through the oil return channel inside the rotating shaft, thereby effectively forming a uniform oil film on the thrust surface, which can effectively lubricate the thrust bearing and the rotating shaft, reduce the friction loss between the sliding surface of the drive shaft and the thrust bearing, thereby effectively reducing the thrust noise and improving the performance and reliability of the compressor; therefore, the drive shaft of the present invention can guide the lubricating oil back to the sliding surface of the thrust bearing during high-speed rotation to form an oil film, greatly reducing the friction between the thrust bearing and the sliding surface of the drive shaft, greatly reducing the thrust noise and improving the performance and reliability of the compressor.

[0034] The application improves that an oil return channel is arranged on the driving shaft, which is communicated with the oil supply channel of the driving shaft, when the driving shaft rotates, the lubricating oil enters the oil return channel through the oil supply channel of the driving shaft, and the lubricating oil in the oil return channel enters the sliding surface of the driving shaft and the thrust bearing through the oil channel, so that internal oil supply is realized, a uniform oil film is formed, the friction loss of the sliding surface of the driving shaft and the thrust bearing is reduced, the thrust noise is reduced, and the compressor performance and reliability are improved.

[0035] The following technical problems are solved:

[0036] 1. The oil return lubricating oil flow channel is increased, and the heat exchange efficiency is improved.

[0037] 2. The surface lubrication of the contact surface is improved, and the friction loss is reduced.

[0038] 3. The thrust noise is reduced.

[0039] In some embodiments, the first oil guide channel 903 is a straight channel, the extension direction of the first oil guide channel 903 and the axis of the rotating shaft 9 form an included angle of [0, 90°], the first oil guide channel 903 includes a radial inner end and a radial outer end, and the oil return channel 902 is also a straight channel, the extension direction of the oil return channel 902 and the axis of the rotating shaft 9 form an included angle of [0, 90°). This is the preferred structure form of the first oil guide channel and the oil return channel of the application, that is, the first channel is a straight channel extending from the radial inner end to the radial outer end, which can extend in the radial direction, or can extend outward at an inclined angle with the radial direction, but it cannot be parallel to the axis direction, otherwise it cannot achieve the purpose of extending to the radial outer side; and the oil return channel preferably extends in the axial direction, but it can also extend at an inclined angle with the axial direction, but it cannot be parallel to the radial direction, otherwise it cannot reach the lower thrust surface of the rotating shaft.

[0040] In some embodiments, the central oil hole 901 extends in the axial direction of the rotating shaft 9 as a whole, the first oil guide channel 903 extends in the radial direction of the rotating shaft 9, the oil return channel 902 extends in the axial direction of the rotating shaft 9, and the upper end of the oil return channel 902 is communicated with the first oil guide channel 903 and the lower end extends to the lower thrust surface 91 of the rotating shaft 9. This is a further preferred structure form of the first oil guide channel and the oil return channel of the application, that is, the first oil guide channel preferably extends outward in the radial direction, and the oil return channel preferably extends in the axial direction, which can realize the oil conduction of the central oil hole to the radial outer side and to the lower thrust surface at the lower end surface, thereby effectively lubricating the thrust surface, improving the lubrication effect at this position, reducing the thrust noise, and improving the operation reliability of the compressor.

[0041] Example 1, as Figures 1-3In some embodiments, the radially inner end of the first oil guiding passage 903 communicates with the central oil hole 901, the radially outer end of the first oil guiding passage 903 is spaced apart from the radially outer periphery of the rotating shaft 9 by a preset distance, and the preset distance is greater than 0, and the upper end of the oil return passage 902 communicates with the radially outer end of the first oil guiding passage 903 or the upper end of the oil return passage 902 communicates to a position between the radially outer end and the radially inner end of the first oil guiding passage 903. This is the preferred structural form of the embodiment 1 of the present application, that is, the first oil guiding passage extends radially outward but does not penetrate the outer peripheral wall of the rotating shaft, so that the oil in the first oil guiding passage is only guided to the position between the rotating shaft and the thrust surface of the thrust bearing through the oil return passage, effectively forming an oil film and improving the lubrication effect at the position.

[0042] As Figure 2 The schematic diagram of the driving shaft installation of the embodiment 1 of the present application, the thrust bearing 19 is fixed on the lower support 7 to form a lower support assembly, the thrust bearing 19 supports the rotating shaft 9, the rotating shaft 9 and the rotor 4 are combined into one to form a rotating scroll assembly, which is matched with the upper support 3, wherein the oil return passage 902 is arranged on the rotating shaft 9, and the oil outlet of the oil return passage 902 is located on the sliding surface of the thrust bearing 19 and the rotating shaft 9. During the operation of the compressor, the rotating shaft 9 rotates, lubricating oil is supplied to the pump body of the compressor through the oil supply passage (central oil hole 901), part of the lubricating oil enters the sliding surface between the rotating shaft 9 and the thrust bearing 19 through the oil return passage 902 for lubrication, and a uniform oil film is formed between the thrust bearing 19 and the rotating shaft 9, so as to return to the oil pool of the lower cover 6. The oil return system formed by the oil return passage 902 reduces the friction loss of the sliding surface between the thrust bearing 19 and the rotating shaft 9. The oil return passage 902 can ensure that a uniform oil film is formed between the thrust bearing 19 and the rotating shaft 9, reduce the thrust noise, and improve the performance and reliability of the compressor.

[0043] The schematic diagram of the driving shaft installation of the embodiment 2 of the present application, the thrust bearing 19 is fixed on the lower support 7 to form a lower support assembly, the thrust bearing 19 supports the rotating shaft 9, the rotating shaft 9 and the rotor 4 are combined into one to form a rotating scroll assembly, which is matched with the upper support 3, wherein the oil return passage 902 is arranged on the rotating shaft 9, and the oil outlet of the oil return passage 902 is located on the sliding surface of the thrust bearing 19 and the rotating shaft 9. During the operation of the compressor, the rotating shaft 9 rotates, lubricating oil is supplied to the pump body of the compressor through the oil supply passage (central oil hole 901), part of the lubricating oil enters the sliding surface between the rotating shaft 9 and the thrust bearing 19 through the oil return passage 902 for lubrication, and a uniform oil film is formed between the thrust bearing 19 and the rotating shaft 9, so as to return to the oil pool of the lower cover 6. The oil return system formed by the oil return passage 902 reduces the friction loss of the sliding surface between the thrust bearing 19 and the rotating shaft 9. The oil return passage 902 can ensure that a uniform oil film is formed between the thrust bearing 19 and the rotating shaft 9, reduce the thrust noise, and improve the performance and reliability of the compressor. Figures 4-5 In some embodiments, the radially inner end of the first oil guiding passage 903 communicates with the central oil hole 901, the radially outer end of the first oil guiding passage 903 communicates to the radially outer peripheral wall of the rotating shaft 9, and the upper end of the oil return passage 902 communicates to a position between the radially outer end and the radially inner end of the first oil guiding passage 903. This is the preferred structural form of the embodiment 2 of the present application, that is, the first oil guiding passage extends radially outward to the outer peripheral wall of the rotating shaft, that is, penetrates the outer peripheral wall, so as to guide part of the oil to the thrust surface through the oil return passage for lubrication, and also guide part of the oil radially outward to the lower support bearing for lubrication, effectively ensuring the simultaneous lubrication of the thrust bearing and the radial bearing.

[0044] As Figure 4For the driving shaft (rotating shaft 9) of the embodiment 2 of the present application, the oil return channel 902 arranged on the rotating shaft 9 is communicated with the first oil guide channel 903 of the sub-shaft neck, and the lubricating oil is divided into two paths in the process of rotating oil supply, the main path is that the lubricating oil is supplied into the pump body through the central oil hole 901, and the sub-path is the first oil guide channel 903 and the oil return channel 902, part of the lubricating oil lubricates the lower support bearing through the first oil guide channel 903, and part of the lubricating oil is shunted into the oil return channel 902 and supplied to the sliding surface of the rotating shaft 9 and the thrust bearing 19, which can ensure that the lubricating oil is sufficient and uniform, and can also form a uniform oil film in the rotating process of the rotating shaft 9.

[0045] In some embodiments, an oil groove 191 is further arranged on the upper thrust surface 194 of the thrust bearing 19, and the lower end of the oil return channel 902 is communicated with the oil groove 191. This is a further preferred structure of the present application, and the oil groove structure arranged on the upper thrust surface of the thrust bearing can further increase the thickness of the oil film between the rotating shaft and the thrust bearing, thereby further improving the lubricating effect between the rotating shaft and the thrust bearing, further reducing noise, and improving reliability.

[0046] In some embodiments, the oil groove 191 is a sunken groove arranged on the upper thrust surface 194, and the sunken groove is an annular groove structure, and the annular groove is at least one; and / or, the thrust bearing 19 is further provided with an oil discharge channel 193, one end of the oil discharge channel 193 is communicated with the oil groove 191, and the other end is communicated to the lower side of the thrust bearing 19. This is a preferred structure of the oil groove of the present application, that is, it is preferably an annular sunken groove structure, and further preferably a structure of multiple annular sunken grooves, such as Figure 7 , which can further increase the area of the oil film and further improve the lubricating effect between the rotating shaft and the thrust bearing; the arrangement of the oil discharge channel can guide the oil out of the oil groove to the oil pool below through the communication, so that the oil can form a circulation, and further enhance the lubricating effect at the thrust bearing surface.

[0047] Embodiment 3, as Figure 6In some embodiments, a lower support 7 and a lower support bearing 20 are further included, the lower support bearing 20 is sleeved on the outer periphery of the rotating shaft 9 to radially support the rotating shaft 9, the lower support 7 is sleeved on the outer periphery of the lower support bearing 20, when the radially outer end of the first oil guiding channel 903 communicates with the radially outer periphery wall of the rotating shaft 9, the lower support bearing 20 is opposite to and communicates with the radially outer end of the first oil guiding channel 903, so that oil can pass through the first oil guiding channel 903 to the lower support bearing 20 to lubricate the lower support bearing 20. This is the preferred structure of the embodiment 3 of the present application, that is, by arranging the lower support bearing on the radially outer side of the first oil guiding channel, the oil in the first oil guiding channel lubricates the thrust surface, and the other part effectively lubricates the lower support bearing, thereby improving the utilization rate of oil and the lubrication effect of the bearings.

[0048] In some embodiments, the lower support bearing 20 is provided with a communication hole 201, the lower support 7 is internally provided with an oil passage channel 704, the thrust bearing 19 is internally provided with a second oil guiding channel 192, one end of the oil passage channel 704 communicates with the first oil guiding channel 903 through the communication hole 201, and the other end communicates with one end of the second oil guiding channel 192, and the other end of the second oil guiding channel communicates with the oil groove 191. The present application further communicates the oil to the lower thrust surface of the rotating shaft and the upper thrust surface of the thrust bearing through the communication hole arranged on the lower support bearing on the outer periphery of the rotating shaft, the oil passage channel arranged on the lower support, and the second oil guiding channel arranged in the thrust bearing, thereby further increasing the oil supply to the thrust surface, supplying oil to the thrust surface from the inside and outside of the rotating shaft at the same time, increasing the thickness of the oil film formed between the thrust bearing and the rotating shaft, improving the lubrication effect between the thrust bearing and the rotating shaft, further reducing the friction between the thrust bearing and the sliding surface of the driving shaft, further reducing the thrust noise, and further improving the performance of the compressor.

[0049] As Figure 6For the schematic diagram of the driving shaft installation of Example 2 in the application, the oil return channel 902 arranged on the rotating shaft 9 is communicated with the first oil guide channel 903 of the sub-shaft neck, the oil passage channel 704 is arranged on the lower support 7 and the lower support bearing 20, and is communicated with the first oil guide channel 903 of the sub-shaft neck, the oil groove 191 and the second oil guide channel 192 and the oil discharge channel 193 are arranged on the thrust bearing 19, wherein the second oil guide channel 192 is communicated with the oil passage channel 704 of the lower support; during the operation of the compressor, the motor drives the rotating shaft 9 to rotate, and the oil pump 14 pumps oil from the oil pool, and the rotating shaft 9 is lubricated in the process of oil supply, and the main path is that the lubricating oil is supplied to the pump body through the central oil hole 901 (i.e. the oil supply channel), and the sub-path is the first oil guide channel 903 and the oil return channel 902, part of the lubricating oil lubricates the lower support bearing through the first oil guide channel 903, part of the lubricating oil enters the second oil guide channel 192 of the thrust bearing 19 through the oil passage channel 704 of the lower support 7, and is supplied to the oil groove 191 arranged on the thrust sliding surface of the thrust bearing 19 to further lubricate the thrust sliding surface; part of the lubricating oil is divided into the oil return channel 902, and is supplied to the sliding surface of the rotating shaft 9 and the thrust bearing 19, and finally the lubricating oil enters the oil pump assembly through the oil discharge channel 193 of the thrust bearing 19, so as to realize the circulation of the oil passage; the structure realizes the bidirectional oil supply from the inside and outside of the thrust bearing 19, ensures that the lubricating oil is sufficient and uniform, and can also form a uniform oil film in the rotating process of the rotating shaft 9.

[0050] In some embodiments, the communication hole 201 is a through hole penetrating from the radial inner periphery of the lower support bearing 20 to the radial outer periphery thereof, the oil passage channel 704 includes a first oil passage channel extending in the radial direction and a second oil passage channel extending in the axial direction, the second oil guide channel 192 includes a first second oil guide channel, a second second oil guide channel and a third second oil guide channel extending in the axial direction and the radial direction, and the first oil guide channel 903, the communication hole 201, the first oil passage channel, the second oil passage channel, the first second oil guide channel, the third second oil guide channel and the second second oil guide channel are sequentially communicated.

[0051] This is a further preferred structure of the communication hole, the oil passage channel and the second oil guide channel of the application, the communication hole is preferably a through hole, the oil passage channel is preferably a two-section channel including a radial channel and an axial channel, and the second oil guide channel preferably includes a three-section channel including two axial channels and a radial channel, which can realize the effect of guiding oil from the lower support outside the rotating shaft, and the channel arranged inside the thrust bearing is used to guide the oil to the oil groove, further improving the lubricating effect on the thrust surface and improving the performance of the compressor.

[0052] In some embodiments, one end of the first oil passage is connected to the connecting hole 201, the other end of the first oil passage extends radially outward to be connected to the upper end of the second oil passage, the second oil passage extends vertically inside the lower bracket 7, the lower end of the second oil passage extends to the lower end surface of the lower bracket 7 and is connected to the upper end of the second oil guide passage one, the second oil guide passage one extends vertically to the inside of the thrust bearing 19, the lower end of the second oil guide passage one is connected to the second oil guide passage three, the second oil guide passage three extends radially inside the thrust bearing 19, the lower end of the second oil guide passage two is connected to the radial inner end of the second oil guide passage three, and the second oil guide passage two extends vertically to its upper end to be connected to the oil groove 191.

[0053] This is a further preferred structural form of the first oil passage, the second oil passage, the second oil guide passage one, the second oil guide passage three, and the second oil guide passage two of the present invention, that is, a channel form in which a radial channel, an axial channel, an axial channel, a radial channel, and an axial channel are connected in sequence, thereby completing the oil supply effect in the oil groove at the thrust surface.

[0054] The present invention also provides a compressor (preferably a scroll compressor), which includes the shaft support assembly described in any of the preceding items.

[0055] like Figure 1 As shown, the scroll compressor is mainly composed of a stator 8, an upper bracket 3, a lower bracket 7, a static scroll 2, a movable scroll 11, a cross slip ring 10, a drive shaft (i.e., a rotating shaft 9), etc. The stator 8 is fixed to the shell 12 by a shrink fit, and the upper bracket 3 is fixed to the shell 12 by eight-point welding. The movable scroll 11 and the static scroll 2 are mounted on the upper bracket 3 with a phase angle difference of 180 degrees. The movable scroll 11 moves under the drive of the rotating shaft 9 and engages with the static scroll 2 to form a series of crescent-shaped closed cavities that are isolated from each other and have continuously changing volumes. The static scroll 2 is fixed to the upper bracket 3 by screw fasteners. The lower bracket 7 is fixed to the lower support ring 5 by screws, and the lower support ring 5 is fixed to the shell 12 by spot welding.

[0056] When the compressor is running, the stator 8 drives the drive shaft (rotating shaft 9) to rotate, and the crank of the rotating shaft 9 drives the orbiting scroll 11 to move. Under the anti-rotation limit of the cross ring 10, the orbiting scroll 11 performs translational motion around the center of the rotating shaft 9 at a fixed radius. The rotation of the rotating shaft 9 drives the scroll 11 to move translationally, and gas enters the compression chamber composed of the orbiting scroll 11 and the fixed scroll 2 from the intake pipe assembly 17. After compression, the gas is discharged into the cavity of the upper cover 1 through the exhaust port of the fixed scroll 2. Then, it passes through the guide channel of the upper bracket 3 and enters the intermediate cavity of the compressor composed of the upper bracket 3, stator 8, rotor 4, balance weight 18, balance weight cover 15 and rotating shaft 9, and is discharged out of the compressor through the exhaust pipe.

[0057] The present application also provides an air conditioner comprising the compressor described above.

[0058] The above description is merely that of the preferred embodiments of the application and is not to be taken in a limiting sense but is made merely for the purpose of providing one skilled in the art with the full and enabling disclosure of the application. The only sole scope of the application is set out in the following claims. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.

Claims

1. A shaft support assembly characterized by: Comprising: a rotating shaft (9) and a thrust bearing (19) supported on a lower thrust surface (91) of the rotating shaft (9), a surface of the thrust bearing (19) supporting the rotating shaft (9) being an upper thrust surface (194); the rotating shaft (9) being internally provided with a central oil hole (901) extending from one axial end to the other axial end of the rotating shaft (9), the rotating shaft (9) further being internally provided with a first oil guide channel (903) and an oil return channel (902), one end of the first oil guide channel (903) being in communication with the central oil hole (901), one end of the oil return channel (902) being in communication with the first oil guide channel (903) and the other end extending to the upper thrust surface (194) of the thrust bearing (19) so as to be able to lubricate between the lower thrust surface (91) of the rotating shaft (9) and the upper thrust surface (194) of the thrust bearing (19).

2. The shaft support assembly according to claim 1, characterized in that: the first oil guide channel (903) is a straight channel, an included angle between an extension direction of the first oil guide channel (903) and an axis of the rotating shaft (9) being between 0° and 90°, the first oil guide channel (903) comprising a radial inner end and a radial outer end, the oil return channel (902) also being a straight channel, an included angle between an extension direction of the oil return channel (902) and the axis of the rotating shaft (9) being between 0° and 90°.

3. The shaft support assembly according to claim 2, characterized in that: the first oil guide channel (903) extends along a radial direction of the rotating shaft (9), the oil return channel (902) extends along an axial direction of the rotating shaft (9), an upper end of the oil return channel (902) being in communication with the first oil guide channel (903) and a lower end of the oil return channel (902) extending to the lower thrust surface (91) of the rotating shaft (9).

4. The shaft support assembly according to claim 3, characterized in that: the radial inner end of the first oil guide channel (903) is in communication with the central oil hole (901), the radial outer end of the first oil guide channel (903) is spaced apart from a radial outer periphery of the rotating shaft (9) by a preset distance, and the preset distance is greater than 0, the upper end of the oil return channel (902) is in communication with the radial outer end of the first oil guide channel (903) or the upper end of the oil return channel (902) is in communication to a position between the radial outer end and the radial inner end of the first oil guide channel (903).

5. The shaft support assembly according to claim 3, characterized in that: the radial inner end of the first oil guide channel (903) is in communication with the central oil hole (901), the radial outer end of the first oil guide channel (903) is in communication to a radial outer periphery wall of the rotating shaft (9), and the upper end of the oil return channel (902) is in communication to a position between the radial outer end and the radial inner end of the first oil guide channel (903).

6. The shaft support assembly according to claim 4, characterized in that: An oil groove (191) is further formed on the upper thrust surface (194) of the thrust bearing (19), and the lower end of the oil return channel (902) is communicated with the oil groove (191).

7. The shaft support assembly according to claim 6, characterized in that: The oil groove (191) is a sink groove formed on the upper thrust surface (194), the sink groove is an annular groove structure, and the annular groove is at least one; and / or, the thrust bearing (19) is further provided with an oil discharge channel (193), one end of the oil discharge channel (193) is communicated with the oil groove (191), and the other end is communicated to the lower side of the thrust bearing (19).

8. The shaft support assembly according to claim 6 or 7, characterized in that: Further comprising a lower support (7) and a lower support bearing (20), the lower support bearing (20) is sleeved on the outer periphery of the rotating shaft (9) to radially support the rotating shaft (9), and the lower support (7) is sleeved on the outer periphery of the lower support bearing (20), when the radial outer end of the first oil guide channel (903) is communicated to the radial outer wall of the rotating shaft (9), the lower support bearing (20) is opposite and communicated with the radial outer end of the first oil guide channel (903), so that oil can pass through the first oil guide channel (903) to the lower support bearing (20) to lubricate the lower support bearing (20).

9. The shaft support assembly according to claim 8, characterized in that: The lower support bearing (20) is provided with a communication hole (201), the lower support (7) is internally provided with an oil passage channel (704), the thrust bearing (19) is internally provided with a second oil guide channel (192), one end of the oil passage channel (704) is communicated with the first oil guide channel (903) through the communication hole (201), and the other end is communicated to one end of the second oil guide channel (192), and the other end of the second oil guide channel is communicated into the oil groove (191).

10. The shaft support assembly according to claim 9, characterized in that: The communication hole (201) is a through hole penetrating from the radial inner periphery to the radial outer periphery of the lower support bearing (20), the oil passage channel (704) includes a first oil passage channel extending in the radial direction and a second oil passage channel extending in the axial direction, the second oil guide channel (192) includes a second oil guide channel one extending in the axial direction, a second oil guide channel two, and a second oil guide channel three extending in the radial direction, and the first oil guide channel (903), the communication hole (201), the first oil passage channel, the second oil passage channel, the second oil guide channel one, the second oil guide channel three, and the second oil guide channel two are communicated in sequence.

11. The shaft support assembly according to claim 10, characterized in that: One end of the first oil passage is communicated with the communication hole (201), and the other end of the first oil passage extends radially outward to be communicated with an upper end of the second oil passage, the second oil passage extends in a vertical direction inside the lower support (7), a lower end of the second oil passage extends to a lower end surface of the lower support (7) and is communicated with an upper end of the second oil guide passage I, the second oil guide passage I extends in a vertical direction to the inside of the thrust bearing (19), a lower end of the second oil guide passage I is communicated with the second oil guide passage III, the second oil guide passage III extends radially inside the thrust bearing (19), a lower end of the second oil guide passage II is communicated with a radially inner end of the second oil guide passage III, and the second oil guide passage II extends in a vertical direction to an upper end thereof communicated with the oil groove (191).

12. A compressor characterized by: A shaft support assembly as claimed in any one of claims 1-11.

13. An air conditioner characterized by comprising: A compressor as claimed in claim 12.

Images