Compressor and air conditioner

Abstract

The present disclosure provides a compressor and an air conditioner, the compressor comprising: a crankshaft, a pump body structure and a bracket, an oil supply hole is provided inside the crankshaft, an oil storage tank is provided inside the bracket and radially spaced at a preset distance from the outer peripheral wall of the crankshaft, the oil in the oil supply hole can reach the oil storage tank from the top of the crankshaft along the outer peripheral wall of the crankshaft, and the oil storage tank can also transport the oil to the pump body end face of the pump body structure for lubrication. According to the present disclosure, lubricating oil can be received from the oil supply hole of the crankshaft and the downward channel from the top, and effectively transported to the pump body end face, so that lubricating oil can be provided to the pump body end face, ensuring the reliability of operation under extreme oil shortage conditions, and effectively solving the problems of insufficient oil supply to the compressor under low temperature and high speed, low temperature starting, defrosting and other working conditions, lack of sufficient lubricating oil inside the oil supply channel of the pump body end face, and wear of the pump body due to oil shortage in the compressor.

Description

Technical Field

[0001] The present disclosure relates to the technical field of compressors, and in particular to a compressor and an air conditioner. Background Art

[0002] During high-speed operation of the high-speed scroll compressor, the end face of the pump body needs to ensure sufficient supply of lubricating oil. Under normal working conditions, the lubricating oil supply is sufficient. Under special working conditions, such as low-temperature and high-speed, low-temperature starting, and defrosting conditions, it is easy to cause oil shortage in a short period of time. The end face of the pump body is poorly lubricated due to lack of oil, causing wear and reduced reliability.

[0003] Patent No. CN 104903583B discloses a scroll compressor, in which the oil supply channel supplies oil to the bearing to ensure lubrication, and the lubricated oil is stored in the groove, which is located below the oil return port to ensure a stable oil level inside, and the oil inside flows to the lubrication parts of the pump body. The main problem of this technology is that the groove is located in the middle of the bracket, the size is small, the mold opening is difficult, and the processing cycle is long.

[0004] Since the scroll compressor in the prior art has technical problems such as insufficient oil supply to the compressor under low-temperature and high-speed, low-temperature starting, defrosting and other operating conditions, lack of sufficient lubricating oil inside the oil supply channel on the end face of the pump body, and wear of the pump body due to lack of oil, the present invention studies and designs a compressor and an air conditioner.

[0005] Public Content

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art of scroll compressors under low-temperature and high-speed, low-temperature starting, defrosting and other operating conditions, such as insufficient oil supply to the compressor, lack of sufficient lubricating oil inside the oil supply channel on the end face of the pump body, and wear of the pump body due to lack of oil, thereby providing a compressor and an air conditioner.

[0007] In order to solve the above problems, the present disclosure provides a compressor, comprising:

[0008] A crankshaft, a pump body structure and a bracket, wherein an oil supply hole is arranged inside the crankshaft, and an oil storage tank is arranged inside the bracket and radially spaced a preset distance from the outer peripheral wall of the crankshaft. The oil in the oil supply hole can reach the oil storage tank from the top of the crankshaft along the outer peripheral wall of the crankshaft, and the oil storage tank can also transport the oil to the pump body end face of the pump body structure for lubrication.

[0009] In some embodiments, the oil storage tank is an annular groove structure formed between a step surface opened on the inner circumferential wall of the bracket and the outer circumferential wall of the crankshaft, and the oil storage tank is connected to the outer circumferential wall of the crankshaft, and the preset distance = 0.

[0010] In some embodiments, the compressor further includes a first oil guide groove and a second oil guide groove, wherein one end of the first oil guide groove is connected to the oil storage tank and the other end is connected to the second oil guide groove, and the other end of the second oil guide groove can guide the oil to the end surface of the pump body.

[0011] In some embodiments, the pump body structure includes a stator plate and a movable plate, the pump body end face is formed at the end face where the stator plate and the movable plate are connected, the stator plate is connected to the bracket, the first oil guide groove is opened inside the bracket, and the second oil guide groove is opened inside the stator plate.

[0012] In some embodiments, the first oil guide groove includes a radial oil guide groove and an axial oil guide groove, the radial oil guide groove is opened in the interior of the bracket and extends in the radial direction, the axial oil guide groove is opened in the interior of the bracket and extends in the axial direction, one end of the radial oil guide groove is connected to the oil storage groove, and the other end is connected to one end of the axial oil guide groove, and the other end of the axial oil guide groove extends to be connected to the second oil guide groove on the stator disk.

[0013] In some embodiments, the second oil guide groove includes a first axial section, a radial section, and a second axial section, the first axial section is opened inside the stator disk and extends in the axial direction, the radial section is opened inside the stator disk and extends in the radial direction, the second axial section is opened inside the stator disk and extends in the axial direction, one end of the first axial section is connected to the axial oil guide groove, and the other end is connected to one end of the radial section, the other end of the radial section is connected to one end of the second axial section, and the other end of the second axial section is at the end surface of the pump body.

[0014] In some embodiments, a throttle valve is further provided in the first oil guide groove; and / or,

[0015] The radial oil guide groove is opened along the radial direction of the bracket to the outer peripheral wall thereof, and a first plug is also provided at the radial outer end of the radial oil guide groove;

[0016] The axial oil guide groove is opened along the axial direction of the bracket to its axial lower end, and a second plug is also arranged at the axial lower end of the axial oil guide groove.

[0017] In some embodiments, the compressor also includes a shell, and an oil return groove is also provided inside the bracket. One end of the oil return groove can also receive the oil flowing down from the top of the crankshaft along the outer peripheral wall of the crankshaft, and the other end of the oil return groove can also guide the oil to the outside of the bracket and be located inside the shell.

[0018] In some embodiments, the oil return groove extends along the radial direction of the bracket, and the oil return groove is spaced apart from the oil storage groove; and / or,

[0019] An oil return cutting edge is also provided on the radial outer peripheral wall of the bracket, one end of the oil return cutting edge is communicated with the oil return groove, and the other end can lead the oil out of the bracket.

[0020] In some embodiments, when an oil return cut edge is further provided on the radial outer peripheral wall of the bracket:

[0021] An oil guiding structure is also provided at the lower end of the bracket, and the oil guiding structure can guide the oil flowing down from the oil return cutting edge along the inner peripheral wall of the shell; and / or the oil return cutting edge is a grooved structure extending in the axial direction.

[0022] In some embodiments, the longitudinal cross-sectional shape of the oil guiding structure includes a first section, a second section, and a third section connected in sequence from top to bottom, the first section is a straight section extending in a vertical direction, and the first section is a first distance away from the inner circumferential wall of the shell, the second section is a slope section extending obliquely from top to bottom, one end of the second section is connected to the first section, and the other end is connected to the third section, the third section is a straight section extending in a vertical direction, and the third section is a second distance away from the inner circumferential wall of the shell, and the first distance is greater than the second distance.

[0023] In some embodiments, when the compressor further includes a first oil guide groove and a second oil guide groove, and the first oil guide groove includes a radial oil guide groove and an axial oil guide groove:

[0024] The oil return groove is a cylindrical groove structure, the height of the central axis is a, the radial oil guide groove is a cylindrical groove structure, the height of the central axis is b, and a>b;

[0025] And / or, when an oil guide structure is further provided at the lower end of the bracket, the oil guide structure is a sheet metal part.

[0026] In some embodiments, a back pressure chamber is further opened inside the bracket, and the top of the crankshaft is formed downward along the outer peripheral wall of the crankshaft to form an oil circulation channel, the back pressure chamber is connected to the oil circulation channel, and the oil storage tank is connected to the back pressure chamber to obtain oil from the back pressure chamber, and the oil return tank is also connected to the back pressure chamber to obtain oil from the back pressure chamber.

[0027] In some embodiments, the flow area of ​​the opening where the oil return groove connects to the back pressure chamber is S1, the flow area of ​​the main body section of the oil return groove is S2, and S1=(1.2-1.5)*S2; and / or,

[0028] The projection of the opening where the oil return groove connects with the back pressure chamber on the vertical plane is semicircular, and the projection of the opening on the horizontal plane is conical, and the cone angle of the cone is 108-120°.

[0029] In some embodiments, the main body section of the oil return groove is a tubular channel, and its cross-sectional area is S2.

[0030] The present disclosure also provides an air conditioner, which comprises the compressor described in any of the preceding items.

[0031] The compressor and air conditioner provided by the present disclosure have the following beneficial effects:

[0032] 1. The present invention adopts the structure of the oil storage tank opened inside the bracket, which can receive lubricating oil from the oil supply hole of the crankshaft and the downward channel at the top, and effectively transport it to the end face of the pump body, so as to provide lubricating oil to the end face of the pump body, ensure the reliability of operation under extreme oil shortage conditions, effectively solve the problems of insufficient oil supply to the compressor under low temperature and high speed, low temperature starting, defrosting and other working conditions, lack of sufficient lubricating oil in the oil supply channel of the pump body end face, and wear of the pump body due to oil shortage of the compressor, improve the lubrication effect on the inside of the pump body of the compressor, and ensure the normal operation of the compressor; further, the present invention adopts the first oil guide channel opened inside the bracket and the second oil guide channel opened on the stator plate to effectively guide the oil in the oil storage tank to the end faces of the stator plate and the movable plate bracket, so as to ensure the effective lubrication of the end face of the pump body;

[0033] 2. The present invention also uses the structure of the oil return groove arranged inside the bracket to effectively guide the oil guided out from the crankshaft oil supply hole to the oil return groove and then to the oil pool inside the shell, so that after the oil supplied from the crankshaft oil supply hole is used to lubricate the bearings and the oil storage groove is used to lubricate the pump body end face, the excess oil is guided back to the compressor shell, thereby ensuring oil recovery; and the present invention can first ensure the oil in the oil storage groove and first ensure the lubrication of the pump body end face by making the height of the oil storage groove lower than the height of the oil return groove, and then guide the excess oil back to the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is an internal cross-sectional view of the entire structure of the compressor disclosed herein;

[0035] Figure 2 is an internal cross-sectional view of an oil circuit portion of a compressor of the present disclosure;

[0036] Figure 3 is an internal cross-sectional view of an upper bracket and an oil passage portion of a crankshaft of a compressor disclosed herein;

[0037] Figure 4 is a structural diagram of an oil return groove opening portion of an upper bracket of a compressor disclosed in the present invention;

[0038] Figure 5 is a structural diagram of the oil return groove opening position of the compressor disclosed in the present invention;

[0039] Figure 6 4 is a structural diagram of the oil return groove opening area of ​​the compressor disclosed in the present invention.

[0040] The reference numerals are as follows:

[0041] 1. Static plate; 2. Moving plate; 3. Bracket (or upper bracket); 4. Crankshaft; 4-1. Crankshaft shoulder; 5. Motor stator; 6. Motor rotor; 7. Intake pipe; 8. Upper cover; 9. Shell; 10-1. Oil return groove; 10-2. Oil return cutting edge; 11. Oil guide structure; 111. First section; 112. Second section; 113. Third section; 12. First oil guide groove; 13. Throttle valve; 12-1. Radial oil guide groove; 12-2. Axial oil guide groove; 12-3. Second oil guide groove; 13. Throttle valve; 14. Oil storage tank; 15. Oil supply hole; 16-1. First plug; 16-2. Plug; 17. Opening; 19. Back pressure chamber. DETAILED DESCRIPTION

[0042] like Figure 1-6 As shown, the present disclosure provides a compressor (preferably a scroll compressor), comprising:

[0043] A crankshaft 4, a pump body structure and a bracket 3, wherein an oil supply hole 15 is arranged inside the crankshaft 4, and an oil storage tank 14 is arranged inside the bracket 3 and radially spaced a preset distance from the outer peripheral wall of the crankshaft 4. The oil in the oil supply hole 15 can reach the oil storage tank 14 from the top of the crankshaft 4 along the outer peripheral wall of the crankshaft 4, and the oil storage tank 14 can also transport the oil to the pump body end face of the pump body structure for lubrication.

[0044] The present invention adopts the structure of the oil storage tank opened inside the bracket, which can receive lubricating oil from the oil supply hole of the crankshaft and the downward channel at the top, and effectively transport it to the end face of the pump body, so as to provide lubricating oil to the end face of the pump body, ensure the reliability of operation under extreme oil shortage conditions, and effectively solve the problems of insufficient oil supply to the compressor under low temperature and high speed, low temperature starting, defrosting and other working conditions, lack of sufficient lubricating oil in the oil supply channel of the pump body end face, and wear of the pump body due to oil shortage in the compressor, thereby improving the lubrication effect on the inside of the pump body of the compressor and ensuring the normal operation of the compressor; further, the present invention adopts the first oil guide channel opened inside the bracket and the second oil guide channel opened on the stator plate to effectively guide the oil in the oil storage tank to the end faces of the stator plate and the moving plate bracket, so as to ensure effective lubrication of the pump body end face.

[0045] In some embodiments, the oil storage tank 14 is an annular groove structure formed between the step surface opened on the inner peripheral wall of the bracket 3 and the outer peripheral wall of the crankshaft, and the oil storage tank 14 is connected to the outer peripheral wall of the crankshaft 4, and the preset distance = 0. This is the preferred structural form of the oil storage tank disclosed in the present invention. By opening it as an annular groove on the inner peripheral wall of the bracket, the storage space can be effectively increased, and the oil flowing in the circumferential direction from the top of the crankshaft can be effectively stored and stored, and an oil seal is formed between the inner wall of the crankshaft.

[0046] In some embodiments, the compressor further includes a first oil guide groove 12 and a second oil guide groove 12-3, one end of the first oil guide groove 12 is connected to the oil storage groove 14, and the other end is connected to the second oil guide groove 12-3, and the other end of the second oil guide groove 12-3 can guide the oil to the end surface of the pump body. The present disclosure also enables the first oil guide groove to be connected to the oil storage groove through the first oil guide groove and the second oil guide groove to absorb oil from the oil storage groove, and the second oil guide groove absorbs oil from the first oil guide groove and guides the oil to the end surface of the pump body to effectively lubricate the end surface of the pump body.

[0047] In some embodiments, the pump body structure includes a stator plate 1 and a movable plate 2, the pump body end face is formed at the end face where the stator plate 1 and the movable plate 2 meet, the stator plate 1 is connected to the bracket 3, the first oil guide groove 12 is opened inside the bracket 3, and the second oil guide groove 12-3 is opened inside the stator plate 1. The pump body of the present disclosure includes a stator plate and a movable plate, the pump body end face is the end face where the stator plate and the movable plate meet, and the first oil guide groove is arranged inside the bracket, and the second oil guide groove is arranged inside the stator plate, which can effectively guide the oil to the pump body end face through the first oil guide groove and the second oil guide groove in sequence to effectively lubricate it.

[0048] In some embodiments, the first oil guide groove 12 includes a radial oil guide groove 12-1 and an axial oil guide groove 12-2, wherein the radial oil guide groove 12-1 is opened inside the bracket 3 and extends in the radial direction, and the axial oil guide groove 12-2 is opened inside the bracket 3 and extends in the axial direction, one end of the radial oil guide groove 12-1 is connected to the oil storage groove 14, and the other end is connected to one end of the axial oil guide groove 12-2, and the other end of the axial oil guide groove 12-2 extends to communicate with the second oil guide groove 12-3 on the stator 1. This is a further preferred structural form of the first oil guide groove of the present disclosure, that is, the radial oil guide groove and the axial oil guide groove are both opened inside the bracket, and the radial oil guide groove extends in the radial direction to absorb oil from the oil storage groove, and the axial oil guide groove extends in the axial direction to absorb oil from the radial oil guide groove and guide the oil axially to the second oil guide groove on the stator, thereby completing the function of effective flow diversion and transfer of oil.

[0049] In some embodiments, the second oil guide groove 12-3 includes a first axial section, a radial section, and a second axial section, the first axial section is opened inside the stator 1 and extends in the axial direction, the radial section is opened inside the stator 1 and extends in the radial direction, the second axial section is opened inside the stator 1 and extends in the axial direction, one end of the first axial section is connected to the axial oil guide groove 12-2, and the other end is connected to one end of the radial section, the other end of the radial section is connected to one end of the second axial section, and the other end of the second axial section is at the end face of the pump body. This is the preferred structural form of the second oil guide groove opened on the stator in the present disclosure, that is, the first axial section extends along the axial direction of the stator to conduct the axial oil guide groove, the radial section extends radially to conduct the first axial section and conduct the oil to the second axial section, and finally the oil is guided to the friction end face between the stator and the moving plate (the end face of the pump body) through the second axial section.

[0050] In some embodiments, a throttle valve 13 is further provided in the first oil guide groove 12; and / or,

[0051] The radial oil guide groove 12 - 1 is opened along the radial direction of the bracket 3 to the outer peripheral wall thereof, and a first plug 16 - 1 is further provided at the radial outer end of the radial oil guide groove 12 - 1;

[0052] The axial oil guide groove 12 - 2 is opened along the axial direction of the bracket 3 to its axial lower end, and a second plug 16 - 2 is also provided at the axial lower end of the axial oil guide groove 12 - 2 .

[0053] This is a further preferred structural form of the present invention. By arranging a throttle valve in the first oil guide groove, the flow of oil flowing through the groove can be controlled and the oil guide groove can be opened and closed. Arranging a first plug at the radial outer end of the radial oil guide groove can effectively seal the place to prevent oil from flowing out of the place to the outside of the bracket. Arranging a second plug at the axial lower end of the axial oil guide groove can effectively seal the place to prevent oil from flowing out of the place to the outside of the bracket.

[0054] In some embodiments, the compressor further includes a housing 9, and an oil return groove 10-1 is further provided inside the bracket 3. One end of the oil return groove 10-1 can also receive the oil flowing down from the top of the crankshaft 4 along the outer peripheral wall of the crankshaft 4, and the other end of the oil return groove 10-1 can also guide the oil to the outside of the bracket 3 and inside the housing 9. The present disclosure also effectively guides the oil guided out from the crankshaft oil supply hole to the oil return groove through the structure of the oil return groove provided inside the bracket, and guides it to the oil pool inside the housing, so that after the oil supplied from the crankshaft oil supply hole is used to lubricate the bearings and the oil storage tank is used to lubricate the end face of the pump body, the excess oil is guided back to the housing of the compressor, thereby ensuring oil recovery; and the present disclosure can first ensure the oil in the oil storage tank, first ensure the lubrication of the end face of the pump body, and then guide the excess oil back to the housing by making the height of the oil storage tank lower than the height of the oil return groove.

[0055] In some embodiments, the oil return groove 10 - 1 extends along the radial direction of the bracket 3 , and the oil return groove 10 - 1 is spaced apart from the oil storage groove 14 ; and / or,

[0056] An oil return cutting edge 10 - 2 is also provided on the radial outer peripheral wall of the bracket 3 , one end of the oil return cutting edge 10 - 2 is connected to the oil return groove 10 - 1 , and the other end can lead the oil out of the bracket 3 .

[0057] This is the preferred structural form of the oil return groove disclosed in the present invention. The radially extending oil return groove can effectively guide the oil to the radial outer end and out of the bracket. Through the setting of the oil return cutting edge, it can be connected with the oil return groove to effectively guide the oil out of the bracket.

[0058] In some embodiments, when an oil return cutting edge 10-2 is further provided on the radial outer peripheral wall of the bracket 3:

[0059] An oil guiding structure 11 is also provided at the lower end of the bracket 3, and the oil guiding structure 11 can guide the oil flowing down the oil return cutting edge 10-2 along the inner circumferential wall of the shell 9; and / or the oil return cutting edge 10-2 is a grooved structure extending in the axial direction.

[0060] The present invention also uses an oil guiding structure provided at the lower end of the bracket to effectively guide the oil flowing down the return oil cutting edge, so that it flows down along the inner circumferential wall of the shell, and prevents it from flowing to other locations, thereby avoiding the occurrence of poor oil return effect at the bottom of the shell. The return oil cutting edge is a grooved structure extending in the axial direction, which can effectively guide the oil in the axial direction.

[0061] In some embodiments, the longitudinal cross-sectional shape of the oil guiding structure 11 includes a first section 111, a second section 112 and a third section 113 which are sequentially connected from top to bottom, the first section 111 is a straight section extending in a vertical direction, and the first section 111 is a first distance away from the inner circumferential wall of the shell 9, the second section 112 is a slope section extending obliquely from top to bottom, one end of the second section 112 is connected to the first section 111, and the other end is connected to the third section 113, the third section 113 is a straight section extending in a vertical direction, and the third section 113 is a second distance away from the inner circumferential wall of the shell 9, and the first distance is greater than the second distance.

[0062] This is a further preferred structural form of the oil guiding structure disclosed in the present invention, which is arranged to be a structural form including the first, second and third sections. The first section is farther away from the inner circumferential wall of the shell than the third section, forming a funnel-shaped structure. Combined with the slope section structure of the second section, it can effectively guide the falling oil and prevent the oil from being unable to effectively return to the bottom of the shell.

[0063] In some embodiments, when the compressor further includes a first oil guide groove 12 and a second oil guide groove 12-3, and the first oil guide groove 12 includes a radial oil guide groove 12-1 and an axial oil guide groove 12-2:

[0064] The oil return groove 10-1 is a cylindrical groove structure, the height of the central axis is a, the radial oil guide groove 12-1 is a cylindrical groove structure, the height of the central axis is b, and a>b;

[0065] And / or, when an oil guide structure 11 is further provided at the lower end of the bracket 3, the oil guide structure 11 is a sheet metal part.

[0066] The present invention also sets the central axis of the oil return groove to be higher than the central axis of the radial oil guide groove, so that all the radial oil guide grooves are located below the oil return groove, thereby ensuring that oil is always stored in the oil storage groove 14 and the radial oil guide grooves, even if the compressor cannot supply oil stably; the oil guide structure is a sheet metal part that can effectively guide oil without causing chemical reactions.

[0067] In some embodiments, a back pressure chamber 19 is further provided inside the bracket 3, and an oil circulation channel is formed downward along the outer peripheral wall of the crankshaft 4 at the top of the crankshaft 4, and the back pressure chamber 19 is connected to the oil circulation channel, and the oil storage tank 14 is connected to the back pressure chamber 19 to obtain oil from the back pressure chamber 19, and the oil return tank 10-1 is also connected to the back pressure chamber 19 to obtain oil from the back pressure chamber 19. The present disclosure can also provide back pressure through the provision of the back pressure chamber, and the back pressure chamber is connected to the oil circulation channel, so that the oil reaches the top of the crankshaft from the oil supply hole upward, and then flows downward along the oil circulation channel to the back pressure chamber, and the present disclosure can effectively introduce oil from the back pressure chamber by opening an oil storage tank and connecting it to the back pressure chamber to complete the lubrication of the end face of the pump body, and can effectively introduce oil from the back pressure chamber by opening an oil return tank and connecting it to the back pressure chamber to guide the oil back to the oil pool at the bottom of the shell.

[0068] In some embodiments, the flow area of ​​the opening 17 connecting the oil return groove 10 - 1 and the back pressure chamber 19 is S1, the flow area of ​​the main body section of the oil return groove 10 - 1 is S2, and S1 = 1.2 to 1.5 * S2; and / or,

[0069] The projection of the opening 17 connecting the oil return groove 10 - 1 and the back pressure chamber 19 on the vertical plane is semicircular, and the projection of the opening on the horizontal plane is conical, and the cone angle of the cone is 108 to 120 degrees.

[0070] This is the preferred structural form of the opening position of the oil return groove disclosed in the present invention. The total inlet area S1 is greater than the cross-sectional area S2, ensuring that the lubricating oil flows unimpeded. The cone angle of 108-120° can effectively increase the flow area.

[0071] In some embodiments, the opening 17 is located above the oil storage tank 14, and / or the main body section of the oil return tank 10-1 is a circular tubular channel, and its cross-sectional area is the S2. The opening is located above the oil storage tank, so that the oil storage tank is always located below the opening, and the oil can always be stored in the oil storage tank, ensuring continuous and effective lubrication of the end face of the pump body.

[0072] The present disclosure also provides an air conditioner, which comprises the compressor described in any of the preceding items.

[0073] The present invention adopts the structure of the oil storage tank opened inside the bracket, which can receive lubricating oil from the oil supply hole of the crankshaft and the downward channel at the top, and effectively transport it to the end face of the pump body, so as to provide lubricating oil to the end face of the pump body, ensure the reliability of operation under extreme oil shortage conditions, and effectively solve the problems of insufficient oil supply to the compressor under low temperature and high speed, low temperature starting, defrosting and other working conditions, lack of sufficient lubricating oil in the oil supply channel of the pump body end face, and wear of the pump body due to oil shortage in the compressor, thereby improving the lubrication effect on the inside of the pump body of the compressor and ensuring the normal operation of the compressor; further, the present invention adopts the first oil guide channel opened inside the bracket and the second oil guide channel opened on the stator plate to effectively guide the oil in the oil storage tank to the end faces of the stator plate and the moving plate bracket, so as to ensure effective lubrication of the pump body end face.

[0074] The present invention also uses the structure of an oil return groove arranged inside the bracket to effectively guide the oil guided out from the crankshaft oil supply hole to the oil return groove and then to the oil pool inside the shell, so that after the oil supplied from the crankshaft oil supply hole is used to lubricate the bearings and the oil storage groove is used to lubricate the pump body end face, the excess oil is guided back to the compressor shell, thereby ensuring oil recovery; and the present invention can first ensure the oil in the oil storage groove and first ensure the lubrication of the pump body end face by making the height of the oil storage groove lower than the height of the oil return groove, and then guide the excess oil back to the shell.

[0075] The present invention discloses a high-speed scroll compressor, comprising a stator plate 1, a moving plate 2, a bracket 3, a crankshaft 4, a motor stator 5, a motor rotor 6, an intake pipe 7, an upper cover 8, a shell 9, etc.; low-temperature and low-pressure gaseous refrigerant enters the intake port of the stator plate 1 from the intake port 7, the eccentric rotation of the crankshaft 4 drives the moving plate 2 to move horizontally, the low-temperature and low-pressure refrigerant is compressed into high-temperature and high-pressure refrigerant in the moving and stationary scroll plates, and is discharged from the exhaust port of the stator plate 1 into the cavity formed by the upper cover 8 and the shell 9, and finally discharged through the exhaust port of the compressor.

[0076] The bracket 3 is provided with a bracket return oil groove 10-1 and an oil return cutting edge 10-2. When the compressor is running,

[0077] The lubricating oil enters the back pressure chamber 19 from the oil pool through the oil supply hole 15. When the lubricating oil enters the back pressure chamber 19, the oil storage tank 14 is first filled up, and then the excess lubricating oil enters the oil guide structure 11 (oil return sheet metal) through the oil return groove 10-1 and the oil return cutting edge 10-2 of the bracket, and returns to the bottom of the compressor oil pool through the motor stator cutting edge.

[0078] The bracket 3 is provided with a first oil guide groove 12, which includes a radial oil guide groove 12-1, an axial oil guide groove 12-2, and a second oil guide groove 12-3. The radial oil guide groove 12-1 is connected to the oil storage groove 14. The high-pressure lubricating oil in the oil storage groove 14 can reach the end face of the dynamic and static disk through the above-mentioned connecting hole to lubricate the end face of the pump body. A throttle valve 13 is arranged inside the vertical hole of the high-pressure oil tank to limit the oil supply flow and pressure. The high-pressure oil tank connecting channel is connected to the end face of the dynamic and static disk, and the lubrication channel of the present invention is not limited thereto. The lubricating oil coming out of the oil storage groove 14 can lead to the compression chamber, the air intake port, etc., in order to achieve lubrication.

[0079] like Figure 4 , Figure 6 As shown in the figure, the opening of the oil return pipe is semicircular in the vertical direction and conical in the horizontal direction. The cone angle is generally 108-120°. The opening is as follows: Figure 6 As shown, the area is S1, the cross-sectional area of ​​the support oil return pipe is S2, S1 = (1.2 ~ 1.5) * S2; Figure 5 , the lowest height of the bracket oil return surface is a, the height of the horizontal hole of the bracket high-pressure oil tank is b, a>b, and all radial oil guide grooves are located below the bracket oil return tank. Through the above invention, when the compressor is short of oil, the oil storage tank 14 can ensure that sufficient lubricating oil is supplied to the pump body, which is fully lubricated and ensures the reliability of the compressor.

[0080] The above is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure. The above is only a preferred implementation of the present disclosure. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present disclosure, and these improvements and variations should also be regarded as the protection scope of the present disclosure.

Claims

1. A compressor, characterized in that: include: A crankshaft (4), a pump body structure and a bracket (3), wherein an oil supply hole (15) is arranged inside the crankshaft (4), and an oil storage tank (14) is arranged inside the bracket (3) and radially spaced apart from the outer peripheral wall of the crankshaft (4) by a preset distance, wherein the oil in the oil supply hole (15) can flow from the top of the crankshaft (4) along the outer peripheral wall of the crankshaft (4) to the oil storage tank (14), and the oil storage tank (14) can also transport the oil to the pump body end surface of the pump body structure for lubrication; The compressor also includes a housing (9), and an oil return groove (10-1) is also provided inside the bracket (3), one end of the oil return groove (10-1) can also receive oil flowing down from the top of the crankshaft (4) along the outer peripheral wall of the crankshaft (4), and the other end of the oil return groove (10-1) can also guide the oil to the outside of the bracket (3) and inside the housing (9); A back pressure chamber (19) is also provided inside the bracket (3), and an oil circulation channel is formed downward along the outer peripheral wall of the crankshaft (4) from the top of the crankshaft (4), the back pressure chamber (19) is connected to the oil circulation channel, and the oil storage tank (14) is connected to the back pressure chamber (19) to obtain oil from the back pressure chamber (19), and the oil return tank (10-1) is also connected to the back pressure chamber (19) to obtain oil from the back pressure chamber (19); The projection of the opening (17) connecting the oil return groove (10-1) and the back pressure chamber (19) on the vertical plane is semicircular, and the projection of the opening on the horizontal plane is conical, and the cone angle of the cone is 108-120 degrees.

2. The compressor according to claim 1, characterized in that: The oil storage groove (14) is an annular groove structure formed between a step surface opened on the inner peripheral wall of the bracket (3) and the outer peripheral wall of the crankshaft, and the oil storage groove (14) is connected to the outer peripheral wall of the crankshaft (4), and the preset distance = 0.

3. The compressor according to claim 1 or 2, characterized in that: The compressor further comprises a first oil guide groove (12) and a second oil guide groove (12-3); one end of the first oil guide groove (12) is connected to the oil storage groove (14), and the other end is connected to the second oil guide groove (12-3); the other end of the second oil guide groove (12-3) can guide the oil to the end surface of the pump body.

4. The compressor according to claim 3, characterized in that: The pump body structure comprises a stator plate (1) and a movable plate (2); the pump body end face is formed at the end face where the stator plate (1) and the movable plate (2) are connected; the stator plate (1) is connected to the bracket (3); the first oil guide groove (12) is opened inside the bracket (3); and the second oil guide groove (12-3) is opened inside the stator plate (1).

5. The compressor according to claim 4, characterized in that: The first oil guide groove (12) includes a radial oil guide groove (12-1) and an axial oil guide groove (12-2). The radial oil guide groove (12-1) is opened inside the bracket (3) and extends in the radial direction. The axial oil guide groove (12-2) is opened inside the bracket (3) and extends in the axial direction. One end of the radial oil guide groove (12-1) is connected to the oil storage groove (14), and the other end is connected to one end of the axial oil guide groove (12-2). The other end of the axial oil guide groove (12-2) extends to be connected to the second oil guide groove (12-3) on the stator (1).

6. The compressor according to claim 5, characterized in that: The second oil guide groove (12-3) includes a first axial section, a radial section and a second axial section, the first axial section is opened inside the stator (1) and extends along the axial direction, the radial section is opened inside the stator (1) and extends along the radial direction, the second axial section is opened inside the stator (1) and extends along the axial direction, one end of the first axial section is connected to the axial oil guide groove (12-2), and the other end is connected to one end of the radial section, the other end of the radial section is connected to one end of the second axial section, and the other end of the second axial section extends to the end face of the pump body.

7. The compressor according to claim 5, characterized in that: A throttle valve (13) is also provided in the first oil guide groove (12); and / or, The radial oil guide groove (12-1) is opened along the radial direction of the bracket (3) to the outer peripheral wall thereof, and a first plug (16-1) is also provided at the radial outer end of the radial oil guide groove (12-1); The axial oil guide groove (12-2) is opened along the axial direction of the bracket (3) to its axial lower end, and a second plug (16-2) is also provided at the axial lower end of the axial oil guide groove (12-2).

8. The compressor according to claim 1, characterized in that: The oil return groove (10-1) extends along the radial direction of the bracket (3), and the oil return groove (10-1) is spaced apart from the oil storage groove (14); and / or, An oil return cutting edge (10-2) is also provided on the radial outer peripheral wall of the bracket (3); one end of the oil return cutting edge (10-2) is connected to the oil return groove (10-1), and the other end can guide oil out of the bracket (3).

9. The compressor according to claim 8, characterized in that: When an oil return cutting edge (10-2) is also provided on the radial outer peripheral wall of the bracket (3): An oil guide structure (11) is also provided at the lower end of the bracket (3), and the oil guide structure (11) can guide the oil flowing down from the oil return cutting edge (10-2) along the inner peripheral wall of the housing (9); and / or the oil return cutting edge (10-2) is a grooved structure extending in the axial direction.

10. The compressor according to claim 9, characterized in that: The longitudinal cross-section of the oil guide structure (11) comprises a first section (111), a second section and a third section which are connected in sequence from top to bottom, the first section being a straight section extending in the vertical direction, and the first section is at a first distance from the inner peripheral wall of the housing (9), the second section is a slope section extending obliquely from top to bottom, one end of the second section is connected to the first section, and the other end is connected to the third section, the third section is a straight section extending in the vertical direction, and the third section is at a second distance from the inner peripheral wall of the housing (9), and the first distance is greater than the second distance.

11. The compressor according to claim 1, characterized in that: When the compressor further comprises a first oil guide groove (12) and a second oil guide groove (12-3), and the first oil guide groove (12) comprises a radial oil guide groove (12-1) and an axial oil guide groove (12-2): The oil return groove (10-1) is a cylindrical groove structure, the height of the central axis thereof is a, and the radial oil guide groove (12-1) is a cylindrical groove structure, the height of the central axis thereof is b, and a>b; And / or, when an oil guide structure (11) is also provided at the lower end of the bracket (3), the oil guide structure (11) is a sheet metal part.

12. The compressor according to claim 1, characterized in that: The flow area of ​​the opening (17) connecting the oil return groove (10-1) and the back pressure chamber (19) is S1, the flow area of ​​the main body section of the oil return groove (10-1) is S2, and S1=(1.2-1.5)*S2.

13. The compressor according to claim 12, characterized in that: The opening (17) is located above the oil storage tank (14), and / or the main body section of the oil return tank (10-1) is a circular tubular channel, and its cross-sectional area is the S2.

14. An air conditioner, characterized in that: A compressor comprising the compressor described in any one of claims 1-13.

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