Lubricating circulation system and compressor

Abstract

The invention provides a lubricating circulation system and a compressor, relates to the technical field of compressors, and solves the technical problems that when the compressor runs obliquely, lubricating oil which affects separation on the high-pressure side of the compressor flows back to the low-pressure side, and blow-by is easily generated in an oil return channel. The compressor lubricating circulation system comprises an oil storage cavity arranged on the back side of a static disc and used for storing lubricating oil separated from the high-pressure side of a compressor; the upper cover oil return hole is formed in the upper cover and communicates with the oil separation cavity and the oil storage cavity so that lubricating oil separated from the high-pressure side of the compressor can flow back into the oil storage cavity; the static disc oil return hole is formed in the bottom of the oil storage cavity and communicated with the shell support cavity so that lubricating oil in the oil storage cavity can flow back into the shell support cavity. When the compressor inclines, lubricating oil in the oil storage cavity can cover the static disc oil return hole all the time. Lubricating oil separated from the high-pressure side of the compressor can smoothly flow back to the low-pressure side, and blow-by of the oil return channel is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a lubrication circulation system and a compressor. Background Art

[0002] The application fields of scroll compressors are becoming more and more extensive, requiring the compressors to be applicable to larger and larger inclination angles and to be able to be applicable to inclinations in uncertain directions.

[0003] The applicant has found that the prior art has at least the following technical problems: 1. The tilt of the compressor will affect the lubricating oil level of the compressor, thereby affecting the lubrication of the compressor pump oil; 2. The tilt of the compressor will also affect the return of the lubricating oil separated on the high-pressure side to the low-pressure side, and the oil return channel is prone to cross-flow; 3. The applicable environment of the scroll compressor is becoming more and more harsh, and the load is getting heavier. When the suction temperature of the compressor is low, part of the refrigerant will return to the compressor in liquid form, which is called liquid return. Too much liquid refrigerant will cause the lubricating oil to be diluted, thereby affecting the lubrication of the compressor. At the same time, the evaporation of the liquid refrigerant will cause a large amount of foam in the lubricating oil. In extreme cases, it will cause liquid to enter the scroll disk to cause liquid hammer, causing irreparable damage to the compressor. Summary of the invention

[0004] The object of the present invention is to provide a lubrication circulation system and a compressor to solve the technical problems in the prior art that when the compressor is running at an angle, the lubricating oil separated on the high-pressure side of the compressor flows back to the low-pressure side, and the return oil channel is prone to air cross-flow.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a compressor lubrication circulation system, comprising:

[0007] An oil storage chamber is provided on the back side of the stator plate to store lubricating oil separated from the high-pressure side of the compressor;

[0008] The upper cover oil return hole is provided on the upper cover and is respectively connected with the oil separation chamber and the oil storage chamber to return the lubricating oil separated from the high-pressure side of the compressor to the oil storage chamber;

[0009] The stationary plate oil return hole is provided at the bottom of the oil storage cavity and communicates with the housing support cavity so as to return the lubricating oil in the oil storage cavity to the housing support cavity;

[0010] When the compressor is tilted, the lubricating oil in the oil storage cavity can always cover the oil return hole of the stator plate.

[0011] The compressor lubrication circulation system provided by the present invention is characterized in that an oil storage chamber is arranged on the back side of the stator plate structure. When the compressor is tilted during operation, the lubricating oil in the oil storage chamber on the stator plate can cover the oil return hole of the stator plate. Therefore, the lubricating oil separated from the high-pressure side of the compressor can smoothly flow back to the low-pressure side. Moreover, since the lubricating oil always covers the oil return hole of the stator plate, the gaseous refrigerant in the oil separation chamber of the upper cover will not enter the oil return channel of the pump body assembly, and no cross-flow will be generated. This solves the problem of whether the lubricating oil separated from the high-pressure side of the compressor can smoothly flow back to the low-pressure side when the compressor is tilted during operation, and the problem of cross-flow in the oil return channel.

[0012] As a further improvement of the present invention, the oil storage cavity is located on the low-pressure cavity side of the stator.

[0013] As a further improvement of the present invention, the oil return hole of the static plate includes an oil return inclined hole and an oil return straight hole arranged in sequence; the oil return straight hole is opened at the front edge of the static plate; one end of the oil return inclined hole is connected to the oil return straight hole, and the other end is connected to the bottom of the oil storage cavity.

[0014] As a further improvement of the present invention, the lubrication circulation system also includes a first oil return hole of the wear-resistant plate arranged on the wear-resistant plate located below the moving plate; the first oil return hole of the wear-resistant plate is arranged directly opposite to the oil return hole of the static plate; the lubrication circulation system also includes a shell drainage groove, which is opened on the shell support platform, and one end extends to the position below the first oil return hole of the wear-resistant plate, and the other end extends to the top of the shell support cavity.

[0015] As a further improvement of the present invention, the lubrication circulation system also includes a first oil return hole and a second oil return hole of the wear-resistant plate arranged on the wear-resistant plate located below the moving plate; the first oil return hole of the wear-resistant plate is arranged opposite to the oil return hole of the static plate; the lubrication circulation system also includes a first oil return hole and a second oil return hole of the moving plate arranged on the moving plate; the first oil return hole of the moving plate is vertically arranged, one end of which is opposite to the second oil return hole of the wear-resistant plate, and the other end is connected to the horizontally arranged second oil return hole of the moving plate; the end of the second oil return hole of the moving plate extends into the crankshaft through hole of the moving plate; the lubrication circulation system also includes a casing drainage groove, which is opened on the casing support platform, and one end extends to a position below the first oil return hole of the wear-resistant plate, and the other end extends to a position below the second oil return hole of the wear-resistant plate.

[0016] As a further improvement of the present invention, the lubrication circulation system further comprises a first oil return boss of the housing, a first oil return groove of the housing, a clearance groove of the oil return member, and an oil return member; wherein:

[0017] The first oil return boss of the housing is arranged at the bottom of the housing support cavity and is located between the main bearing limiting boss and the crankshaft through hole;

[0018] The first oil return groove of the housing is arranged between the inner wall of the housing bracket cavity and the main bearing limiting boss, and the first oil return groove of the housing is provided with a plurality of connecting grooves, one end of the connecting groove is connected with the first oil return groove of the housing, and the other end extends to the position of the first oil return boss of the housing;

[0019] The oil return member clearance groove is arranged at the bottom of the housing bracket cavity and is respectively connected with the first oil return boss of the housing and the oil return member;

[0020] The oil return member is installed on the main bearing installation side;

[0021] A gap is left between the first oil return boss of the housing and the inner ring of the main bearing to form a return channel;

[0022] A gap is left between the crankshaft through hole and the crankshaft to form a housing oil return hole;

[0023] The shell oil return hole is communicated with the return channel.

[0024] Through the above structural arrangement, the present invention has most of the lubricating oil in the shell bracket cavity still flow back from the oil return part into the oil pool at the bottom of the compressor, and a small part flows along the crankshaft to the rotor assembly from the gap under the inner ring of the main bearing. The crankshaft rotor assembly rotates at high speed to break up the lubricating oil flowing along the crankshaft, and the broken up lubricating oil is sucked into the vortex together with the refrigerant, thereby ensuring the lubrication of the vortex. The problem of affecting the relative position of the compressor lubricating oil level with respect to the pump oil part when the compressor is running at an angle, thereby affecting the lubrication of the compressor pump oil, is solved.

[0025] As a further improvement of the present invention, the lubrication circulation system further comprises a second oil return boss of the housing, a second oil return groove of the housing, a clearance groove of the oil return member, and an oil return member; wherein:

[0026] The second oil return boss of the housing is arranged at the bottom of the housing support cavity and is located outside the crankshaft through hole;

[0027] The second oil return groove of the housing is arranged between the inner wall of the housing bracket cavity and the second oil return boss of the housing, and the second oil return groove of the housing is provided with a plurality of connecting grooves, one end of the connecting groove is connected with the second oil return groove of the housing, and the other end extends to the position of the first oil return boss of the housing;

[0028] A gap is left between the second oil return boss of the housing and the inner and outer rings of the main bearing to form an inner return channel and an outer return channel respectively;

[0029] A gap is left between the crankshaft through hole and the crankshaft to form a shell oil return hole; the shell oil return hole is connected to the inner return channel;

[0030] The oil return member is installed on the installation side of the main bearing and is communicated with the external return channel.

[0031] As a further improvement of the present invention, the lubrication circulation system further includes a plurality of shell airflow channels arranged at intervals along the circumferential direction of the inner wall of the shell.

[0032] As a further improvement of the present invention, the lubrication circulation system further includes an oil pump, an adapter, a first crankshaft oil hole, a second crankshaft oil hole, a third crankshaft oil hole, and an oil baffle; wherein:

[0033] The oil pump component is placed in the oil pool at the bottom of the compressor and is connected to the lower bracket through the adapter;

[0034] The second crankshaft oil hole is provided at the bottom of the crankshaft and is communicated with the outlet of the oil pump member;

[0035] The first crankshaft oil hole is horizontally opened on the crankshaft side wall and is connected with the second crankshaft oil hole;

[0036] The third crankshaft oil hole is arranged along the axial direction of the crankshaft, and the top part extends to the bottom part of the movable plate, and the bottom part is communicated with the second crankshaft oil hole;

[0037] The oil baffle is sleeved on the outside of the lower bracket and covers the top of the oil pool;

[0038] A plurality of support oil return grooves are arranged on the lower support along the circumferential direction; all the support oil return grooves are arranged in one-to-one correspondence with all the shell air flow channels.

[0039] As a further improvement of the present invention, the lubrication circulation system further includes a thrust bearing, a first crankshaft oil hole, a fourth crankshaft oil hole, a fifth crankshaft oil hole, and an oil baffle; wherein:

[0040] The lower end of the crankshaft is connected to the lower bracket through the thrust bearing;

[0041] The fourth crankshaft oil hole is arranged in the crankshaft, and the bottom portion extends to the bottom portion of the crankshaft, and the top portion extends to the upper portion of the crankshaft located at the housing support cavity;

[0042] The first crankshaft oil hole is opened on the crankshaft side wall, and one end is connected to the fourth crankshaft oil hole, and the other end is connected to the auxiliary bearing cavity on the lower bracket;

[0043] The fifth crankshaft oil hole is opened on the crankshaft side wall, and one end is connected to the fourth crankshaft oil hole, and the other end is connected to the housing support cavity;

[0044] The oil baffle is sleeved on the outer side of the lower bracket and covers the top of the oil pool.

[0045] The present invention installs the oil baffle plate through the lower bracket, which can prevent the refrigerant sucked into the air intake port from directly mixing with the lubricating oil in the oil storage chamber, affecting the oil content of the compressor refrigerant and thus affecting the performance of the compressor; under extreme conditions, when the air intake port sucks in liquid refrigerant, the oil baffle plate can effectively prevent the liquid refrigerant from mixing with the lubricating oil, thereby affecting the lubrication of the compressor and the liquid in the air intake causing liquid hammer on the vortex plate; when the compressor is tilted during operation, the oil baffle plate can effectively prevent the oil storage lubricating oil from being separated from the oil pump, ensuring that the lubricating oil in the oil storage chamber can always immerse the oil pumping port of the oil pump, thereby ensuring that the oil pump can pump oil reliably, solving the problem that the liquid return of the compressor in harsh environments causes the dilution of the lubricating oil, thereby affecting the lubrication of the compressor, and the liquid return causes the lubricating oil to generate a large amount of foam, which in extreme cases will cause liquid hammer on the vortex plate, affecting the reliable operation of the compressor.

[0046] A compressor provided by the present invention is a vertical low-pressure chamber scroll compressor, comprising the lubrication circulation system.

[0047] As a further improvement of the present invention, it further comprises an upper cover, wherein an oil separation chamber is arranged inside the upper cover, and the oil separation chamber is communicated with the external environment through an exhaust port; and the oil separation chamber is an oblique upward structure.

[0048] As a further improvement of the present invention, a stator boss is provided on the back side of the stator disk, and the stator boss divides the back side of the stator disk into a high-pressure chamber, a low-pressure chamber and an oil storage chamber; the upper cover is provided with an upper cover boss for sealing the high-pressure chamber, the low-pressure chamber and the oil storage chamber of the stator disk, and the upper cover is provided with an oil separation chamber, which is connected with the oil storage chamber through the oil return hole of the upper cover; the oil storage chamber is filled with the lubricating oil separated in the oil separation chamber of the upper cover. When the compressor is tilted, the lubricating oil in the oil storage chamber can cover the oil return hole of the stator disk, so the lubricating oil separated on the high-pressure side of the compressor can smoothly flow back to the low-pressure side, and the oil return channel does not generate cross-flow.

[0049] As a further improvement of the present invention, the compressor includes a shell; an oil return part is installed in the shell, and most of the lubricating oil in the shell bracket cavity flows back to the lower cover oil pool through the oil return part; a main bearing is installed in the shell bracket cavity, and a gap is left between the inner ring of the main bearing and the first oil return boss of the shell, and a small part of the lubricating oil in the shell bracket cavity flows along the crankshaft to the rotor assembly through the gap under the inner ring of the main bearing; the crankshaft rotor assembly rotates at high speed, breaks up the lubricating oil flowing along the crankshaft, and the broken up lubricating oil is sucked into the scroll plate together with the refrigerant, thereby lubricating the scroll plate.

[0050] As a further improvement of the present invention, a plurality of shell airflow channels and a plurality of stator mounting bosses are provided around the shell, and the stator mounting bosses are used to mount the motor stator; the shell airflow channel is arranged along the axial direction of the shell, and can circulate the refrigerant, and at the same time, the shell airflow channel can also lead the lubricating oil scattered on the shell wall to the oil pool under the shell.

[0051] As a further improvement of the present invention, the compressor further comprises a lower bracket, and a bracket oil return groove is provided at a position of the lower bracket corresponding to the air flow channel of the shell, for guiding the lubricating oil on the wall of the shell to the oil pool.

[0052] As a further improvement of the present invention, an air intake port is arranged below the motor stator in the shell, and the air intake port is located above the lower bracket. An oil baffle is installed on the lower bracket to prevent the refrigerant sucked into the air intake port from directly mixing with the lubricating oil in the oil pool, thereby affecting the oil content of the compressor refrigerant and thus affecting the performance of the compressor; under extreme conditions, the air intake port sucks in liquid refrigerant, and the oil baffle can also effectively prevent the liquid refrigerant from mixing into the lubricating oil, thereby affecting the lubrication of the compressor and the liquid hammer caused by the suction liquid on the vortex plate; when the compressor is tilted during operation, the oil baffle can effectively prevent the oil storage lubricating oil from separating from the oil pump, thereby ensuring that the lubricating oil in the oil pool can always immerse the oil pumping port of the oil pumping component, thereby ensuring reliable oil pumping of the oil pumping component. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 is a cross-sectional structural diagram of an embodiment of a compressor of the present invention;

[0055] Figure 2 It is a bottom view of an embodiment of an upper cover in a compressor of the present invention;

[0056] Figure 3 is a top view of a stator plate in a compressor of the present invention;

[0057] Figure 4 is a bottom view of a stator plate in a compressor of the present invention;

[0058] Figure 5 It is a top view of an embodiment of a wear-resistant sheet in a compressor of the present invention;

[0059] Figure 6 is a top view of an embodiment of a housing in a compressor of the present invention;

[0060] Figure 7 It is a partial three-dimensional structural schematic diagram of an embodiment of a housing in a compressor of the present invention;

[0061] Figure 8 It is a structural schematic diagram of an embodiment of a lower bracket in a compressor of the present invention;

[0062] Fig. 9It is a schematic diagram of the structure of the oil baffle plate in the compressor of the present invention;

[0063] Fig.10 It is a structural schematic diagram of another embodiment of the upper cover in the compressor of the present invention;

[0064] Fig.11 It is a partial three-dimensional structural schematic diagram of another embodiment of the housing of the compressor of the present invention;

[0065] Fig.12 is a cross-sectional structural diagram of another embodiment of a compressor of the present invention;

[0066] Fig.13 is a top view of another embodiment of a housing in a compressor of the present invention;

[0067] Fig.14 is a top view of another embodiment of a wear-resistant sheet in a compressor of the present invention;

[0068] Fig.15 It is a cross-sectional view of an embodiment of a moving plate in a compressor of the present invention.

[0069] In the figure, 1 is the upper cover; 2 is the static plate; 3 is the moving plate; 4 is the wear-resistant sheet; 5 is the housing; 6 is the motor stator; 7 is the rotor assembly; 8 is the crankshaft; 9 is the auxiliary bearing; 10 is the lower bracket; 11 is the oil baffle plate; 12 is the lower cover; 13 is the oil pump part; 14 is the adapter; 15 is the oil return part; 16 is the main bearing; 17 is the moving plate bearing; 18 is the oil filter; 19 is the oil distribution pipe; 20 is the thrust bearing; 21 is the plugging part; 22 is the high-pressure chamber; 23 is the low-pressure chamber; 24 is Shell support platform; 101, oil distribution chamber; 102, upper cover boss; 103, upper cover oil return hole; 104, upper cover air flow hole; 201, static plate boss; 202, static plate groove; 203, static plate air flow hole; 204, oil return inclined hole; 205, oil storage chamber; 206, oil return straight hole; 207, static plate side wall; 301, moving plate flange; 302, moving plate oil return countersunk hole; 303, moving plate first oil return hole; 304, moving plate second oil return hole; 401 , first oil return hole of wear-resistant plate; 402, air flow hole of wear-resistant plate; 403, second oil return hole of wear-resistant plate; 501, drainage groove of housing; 502, mounting hole of oil return part; 503, first oil return groove of housing; 504, limiting boss of main bearing; 505, first oil return boss of housing; 506, air flow hole of housing; 507, position groove of oil return part; 508, oil return hole of housing; 509, mounting boss of stator; 510, mounting boss of lower bracket; 511, air flow hole of housing Flow channel; 512, second oil return boss of shell; 513, second oil return groove of shell; 801, first crankshaft oil hole; 802, second crankshaft oil hole; 803, third crankshaft oil hole; 804, fourth crankshaft oil hole; 805, fifth crankshaft oil hole; 1001, side wall of lower bracket; 1002, oil return part give way groove; 1003, oil baffle plate mounting hole; 1004, bracket oil return groove; 1005, suction give way groove; 1101, oil baffle plate oil return part give way groove. DETAILED DESCRIPTION

[0070] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0071] like Figure 1-Figure 15 As shown, in this embodiment, the present invention provides a compressor lubrication circulation system, comprising:

[0072] The oil storage chamber 205 is arranged on the back side of the stator plate 2 to store the lubricating oil separated from the high pressure side of the compressor;

[0073] The upper cover oil return hole 103 is provided on the upper cover 1 and is connected to the oil separation chamber 101 and the oil storage chamber 205 respectively, so as to return the lubricating oil separated on the high-pressure side of the compressor to the oil storage chamber 205; an oil filter 18 is arranged in the upper cover oil return hole 103, which is used to filter the returning lubricating oil; it should be noted that an oil separation pipe 19 is arranged in the oil separation chamber 101, which is used to separate the exhaust gas from oil;

[0074] The stationary plate oil return hole is provided at the bottom of the oil storage chamber 205 and is connected to the housing support chamber to return the lubricating oil in the oil storage chamber 205 to the housing support chamber; it should be noted here that the housing support chamber is located at the housing support platform 24.

[0075] When the compressor is tilted, the lubricating oil in the oil storage cavity 205 can always cover the oil return hole of the stator plate.

[0076] Specifically, since the low-pressure chamber of the stator plate 2 is located at the edge, the oil storage chamber 205 is located at the low-pressure chamber side of the stator plate 2 , that is, at the edge of the stator plate 2 .

[0077] Furthermore, considering the structural characteristics of the back and front sides of the stator plate 2, for example, the stator plate side cylinder wall 207 on the front side of the stator plate 2 is a non-planar structure, and the oil storage chamber 205 is set at a position biased towards the center of the stator plate 2 rather than close to the edge, and the oil return hole on the front side of the stator plate 2 needs to be close to the edge of the stator plate 2. Therefore, in order to enable smooth reflux and convenient setting, in the present invention, the stator plate oil return hole is not vertically set, but includes a two-stage structure, which includes an oil return inclined hole 204 and an oil return straight hole 206 arranged in sequence; the oil return straight hole 206 is opened at the edge of the front side of the stator plate 2; one end of the oil return inclined hole 204 is connected to the oil return straight hole 206, and the other end is connected to the bottom of the oil storage chamber 205

[0078] Specifically, the lubrication circulation system of the present invention is applied to a vertical low-pressure chamber scroll compressor, and a stator boss 201 is provided on the back side of the stator, and the stator boss 201 divides the back side of the stator into a high-pressure chamber 22, a low-pressure chamber 23 and an oil storage chamber 205; the upper cover is provided with an upper cover boss 102 for sealing the high-pressure chamber, the low-pressure chamber and the oil storage chamber 205 of the stator 2, and the upper cover 1 is provided with an oil separation chamber 101, and the oil separation chamber 101 is connected with the oil storage chamber 205 of the stator 2 through the upper cover oil return hole 103. The oil storage chamber 205 is filled with the lubricating oil separated by the upper cover oil separation chamber 101. When the compressor is tilted, the lubricating oil in the oil storage chamber can cover the oil return hole of the stator, so that the lubricating oil separated on the high-pressure side of the compressor can smoothly flow back to the low-pressure side, and the oil return channel does not generate cross-flow.

[0079] Furthermore, the upper cover 1 is provided with an upper cover air flow hole 104 for air discharge; the stator boss 201 of the stator 2 is provided with a stator groove 202, and a sealing ring is arranged in the inner shell of the stator groove 202 to seal between the cavities; the stator 2 is provided with a stator air flow hole 203 for air flow.

[0080] The compressor lubrication circulation system provided by the present invention is provided with an oil storage chamber 205 on the back side of the stator plate 2 structure. When the compressor is tilted, the lubricating oil in the oil storage chamber 205 on the stator plate 2 can cover the oil return hole of the stator plate. Therefore, the lubricating oil separated from the high-pressure chamber 22 of the compressor can smoothly flow back to the low-pressure chamber 23. Moreover, since the lubricating oil always covers the oil return hole of the stator plate, the gaseous refrigerant in the oil separation chamber 101 of the upper cover 1 will not enter the oil return channel of the pump body assembly, and no cross-flow will be generated. This solves the problem of whether the lubricating oil separated from the high-pressure side of the compressor can smoothly flow back to the low-pressure side when the compressor is tilted.

[0081] As an optional embodiment of the present invention, the lubrication circulation system also includes a first oil return hole 401 of the wear-resistant plate arranged on the wear-resistant plate 4 located below the moving plate 3; the first oil return hole 401 of the wear-resistant plate is arranged opposite to the oil return hole of the static plate, specifically, opposite to the oil return straight hole 206 of the static plate; the lubrication circulation system also includes a housing drainage groove 501, the housing drainage groove 501 is opened on the housing support platform 24, and one end extends to the position below the first oil return hole 401 of the wear-resistant plate, and the other end extends to the top of the housing bracket cavity. After the lubricating oil flows out through the oil return straight hole 206 of the static plate, it directly enters the first oil return hole 401 of the wear-resistant plate, and then is introduced into the housing bracket cavity through the housing drainage groove 501, thereby realizing the gap reflux structure.

[0082] As another optional embodiment of the present invention, different from the previous gap return structure, in this embodiment, it is a reverse flow plus gap return structure; in this embodiment, the lubrication circulation system also includes a first oil return hole 401 and a second oil return hole 403 of the wear-resistant plate arranged on the wear-resistant plate 4 below the moving plate 3; the first oil return hole 401 of the wear-resistant plate is arranged opposite to the oil return hole of the static plate, specifically, it is arranged opposite to the oil return straight hole 206 of the static plate; the lubrication circulation system also includes a first oil return hole 303 and a second oil return hole 304 of the moving plate arranged on the moving plate 3; Furthermore, a moving disc oil return counterbore 302 is further provided on the moving disc flange 301 on the side where the moving disc 3 contacts the wear-resistant plate 4. The moving disc first oil return counterbore 303 is vertically arranged in the moving disc oil return counterbore 302, and one end is arranged opposite to the wear-resistant plate second oil return hole 403, and the other end is connected to the horizontally arranged moving disc second oil return hole 304; the end of the moving disc second oil return hole 304 extends into the crankshaft through hole of the moving disc 3; in order to facilitate processing, the moving disc second oil return hole 304 is horizontally drilled inward through the outer wall of the moving disc 3, and a blocking member 21 is provided to prevent a useless section of the hole from being blocked;

[0083] The lubrication circulation system also includes a housing drainage groove 501, which is opened on the housing support platform 24, and one end of which extends to the position below the first oil return hole 401 of the wear-resistant plate, and the other end extends to the position below the second oil return hole 403 of the wear-resistant plate. Through this structural setting, the lubricating oil flows out through the oil return hole of the static plate and enters the first oil return hole 401 of the wear-resistant plate, and then enters the second oil return hole 403 of the wear-resistant plate through the housing drainage groove 501, and then enters the oil return counterbore 302 of the movable plate, and then enters the first oil return hole 303 of the movable plate, and then enters the crankshaft through hole through the second oil return hole 304 of the movable plate, and then enters the gap between the crankshaft 8 and the main bearing 16, and finally flows back to the oil pool at the bottom of the housing through the oil return member 15 and the gap of the crankshaft 8, thereby forming a backflow plus gap reflux structure.

[0084] It should be noted that the wear-resistant sheet 4 in the above two embodiments has wear-resistant sheet air flow holes 402 for air to pass through.

[0085] The above two embodiments can be selected and used according to actual needs.

[0086] Based on the above structure, the present invention also makes the following improvements:

[0087] As an optional embodiment of the present invention, the lubrication circulation system further includes a first oil return boss 505 of the housing, a first oil return groove 503 of the housing, an oil return member yielding groove 507, and an oil return member 15; wherein:

[0088] The first oil return boss 505 of the housing is arranged at the bottom of the housing support cavity and is located between the main bearing limiting boss 504 and the crankshaft through hole;

[0089] The first oil return groove 503 of the housing is arranged between the inner wall of the housing support cavity and the main bearing limiting boss 504, and the first oil return groove 503 of the housing has a plurality of connecting grooves, one end of the connecting groove is connected to the first oil return groove 503 of the housing, and the other end extends to the position of the first oil return boss 505 of the housing, so that most of the lubricating oil in the first oil return boss 505 of the housing can enter the first oil return groove 503 of the housing;

[0090] The oil return member clearance groove 507 is arranged at the bottom of the housing bracket cavity, and is respectively connected with the housing first oil return boss 505 and the oil return member 15. This structural arrangement is to enable the lubricating oil in the housing first oil return groove 503 to smoothly enter the oil return member 15.

[0091] The oil return member 15 is installed in the oil return member installation hole 502 on the main bearing installation side;

[0092] A gap is left between the first oil return boss 505 of the housing and the inner ring of the main bearing 16 to form a return channel;

[0093] A gap is left between the crankshaft through hole and the crankshaft 8 to form a housing oil return hole 508;

[0094] The shell oil return hole 508 is connected to the return channel. It should be noted that a plurality of shell air flow holes 506 are also arranged along the circumferential direction on the outer periphery of the shell support platform 24 .

[0095] Specifically, the compressor housing 5 is provided with a housing drainage groove 501, one end of which is connected to the oil return hole of the static plate through the first oil return hole 401 of the wear-resistant plate, and the other end of the housing drainage groove 501 is led to the housing bracket cavity. The housing bracket cavity is provided with a main bearing 16, and an oil return member mounting hole 502 is provided on the mounting side of the main bearing 16 for mounting the oil return member 15. A main bearing limiting boss 504 is provided at the bottom end of the housing bracket cavity for limiting and supporting the outer ring of the main bearing 16. A housing first oil return boss 505 is provided at the bottom end of the housing bracket cavity, and a housing first oil return groove 503 is provided on the outside of the main bearing limiting boss 504. The housing first oil return groove 503 radially extends to the housing first oil return boss 505, and guides the lubricating oil at the position of the housing first oil return boss 505 to the housing first oil return groove 503. An oil return member yielding groove 507 is provided at the position of the oil return member mounting hole 502, which is conducive to the smooth flow of the lubricating oil in the housing bracket cavity to the oil return member 15. There is a gap between the first oil return boss 505 of the housing and the inner ring of the main bearing 16. Most of the lubricating oil in the housing bracket cavity returns to the oil pool at the bottom of the housing 5 through the oil return member 15, and a small amount of lubricating oil flows to the housing oil return hole 508 through the gap between the first oil return boss 505 of the housing and the inner ring of the main bearing 16, and flows along the crankshaft 8 to the rotor assembly 7. The crankshaft 8 and the rotor assembly 7 rotate at high speed, breaking up the lubricating oil flowing down along the crankshaft 8, and the broken up lubricating oil is sucked into the scroll together with the refrigerant, thereby lubricating the scroll. The lubricating oil not carried away by the refrigerant is broken up to the wall of the housing 5, and flows to the oil pool below the housing through the housing air flow channel 511.

[0096] Through the above structural arrangement, the present invention has most of the lubricating oil in the shell bracket cavity still flow back from the oil return part into the oil pool at the bottom of the compressor, and a small part flows along the crankshaft to the rotor assembly from the gap under the inner ring of the main bearing. The crankshaft rotor assembly rotates at high speed to break up the lubricating oil flowing along the crankshaft, and the broken up lubricating oil is sucked into the vortex together with the refrigerant, thereby ensuring the lubrication of the vortex. The problem of affecting the relative position of the compressor lubricating oil level with respect to the pump oil part when the compressor is running at an angle, thereby affecting the lubrication of the compressor pump oil, is solved.

[0097] In the above embodiment, a main bearing limiting boss 504 is provided on the outer side of the first oil return boss 505 of the housing. It should be noted that the main bearing limiting boss 504 may not be provided, as in the following embodiment:

[0098] In this embodiment, the lubrication circulation system further includes a second oil return boss 512 of the housing, a second oil return groove 513 of the housing, an oil return member yielding groove 507, and an oil return member 15; wherein:

[0099] The second oil return boss 512 of the housing is arranged at the bottom of the housing support cavity and is located outside the crankshaft through hole;

[0100] The second oil return groove 513 of the housing is disposed between the inner wall of the housing bracket cavity and the second oil return boss 512 of the housing, and the second oil return groove 513 of the housing is provided with a plurality of connecting grooves, one end of the connecting groove is connected to the second oil return groove 513 of the housing, and the other end extends to the position of the second oil return boss 512 of the housing; through such a structural arrangement, a large amount of lubricating oil at the second oil return boss 512 of the housing can flow into the second oil return groove 513 of the housing;

[0101] There are gaps between the second oil return boss 512 of the housing and the inner and outer rings of the main bearing 16 to form an inner return channel and an outer return channel respectively;

[0102] A gap is left between the crankshaft through hole and the crankshaft to form a housing oil return hole 508; the housing oil return hole 508 is connected to the internal return channel;

[0103] The oil return member 15 is installed in the oil return member installation hole 502 on the installation side of the main bearing and is communicated with the external return channel.

[0104] In this embodiment, the second oil return boss 512 of the shell is a plane, and there is a gap between it and the inner and outer rings of the main bearing 16. The second oil return groove 513 of the shell 5 is opened on the periphery of the second oil return boss 512 of the shell and extends radially inward, which is beneficial to the smooth guidance of the lubricating oil passing through the bearing to the oil return member 15.

[0105] It should be noted here that the oil return member 15 is used to return the lubricating oil to the oil pool at the bottom of the shell. The oil return channel between the oil return member 15 and the bottom oil pool and the structure of the oil return member 15 are all prior arts, which are not the main invention points of the present invention, so they will not be elaborated in detail.

[0106] As an optional embodiment of the present invention, the lubrication circulation system further includes a plurality of housing airflow channels 511 spaced apart along the inner wall of the housing 5. It should be noted that the housing airflow channels 511 are spaced apart, and the inner wall of the housing 5 is also provided with a stator mounting boss 509 and a lower bracket mounting boss 510. In order to avoid blocking the housing airflow channel 511, the stator mounting boss 509 and the lower bracket mounting boss 510 are both segmented structures to ensure the smooth flow of the housing airflow channel 511.

[0107] The above two embodiments can be selected and used according to actual needs.

[0108] As an optional embodiment of the present invention, the lubrication circulation system further includes an oil pump 13, an adapter 14, a first crankshaft oil hole 801, a second crankshaft oil hole 802, a third crankshaft oil hole 803, and an oil baffle 11; wherein:

[0109] The oil pumping member 13 is placed in the oil pool at the bottom of the compressor and is connected to the lower bracket 10 via an adapter 14 having a through hole for pumping oil;

[0110] The second crankshaft oil hole 802 is provided at the bottom of the crankshaft 8 and is connected to the outlet of the oil pump 13;

[0111] The first crankshaft oil hole 801 is horizontally opened on the side wall of the crankshaft 8 and communicates with the second crankshaft oil hole 802;

[0112] The third crankshaft oil hole 803 is arranged along the axial direction of the crankshaft 8, and the top part extends to the bottom part of the movable plate 3, and the bottom part is connected with the second crankshaft oil hole 802;

[0113] The oil baffle plate 11 is sleeved on the outer side of the lower bracket 10 and covers the top of the oil pool;

[0114] A plurality of support oil return grooves 1004 are arranged circumferentially on the lower support 10 ; all the support oil return grooves 1004 are arranged in one-to-one correspondence with all the housing air flow channels 511 .

[0115] Furthermore, an oil return member clearance groove 1002 is opened on the side wall 1001 of the lower bracket to facilitate the passage of the oil return member 15; the oil baffle plate 11 is located at the bottom of the lower bracket 10 and is connected to the lower bracket 10 through the oil baffle plate mounting hole 1003; the lower bracket 10 is also provided with an air suction clearance groove 1005.

[0116] An oil baffle plate oil return member yielding groove 1101 is provided at the upper edge of the oil baffle plate 11 to facilitate the passage of the oil return member 15 .

[0117] Through this structural arrangement, the lubricating oil entering the lower bracket 10 can flow back into the oil pool through the bracket oil return groove 1004.

[0118] The above embodiment is an embodiment in which the oil pump 13 is arranged in the oil pool. Considering that the bearing of the present invention is a ball bearing, the lubricating oil requirement is small, therefore, the oil pump 13 may not be arranged, as in the following embodiment:

[0119] In this embodiment, the lubrication circulation system further includes a thrust bearing 20, a first crankshaft oil hole 801, a fourth crankshaft oil hole 804, a fifth crankshaft oil hole 805, and an oil baffle 11; wherein:

[0120] The lower end of the crankshaft 8 is connected to the lower bracket 10 through a thrust bearing 20;

[0121] The fourth crankshaft oil hole 804 is arranged in the crankshaft 8, and the bottom part extends to the bottom part of the crankshaft 8, and the top part extends to the upper part of the crankshaft 8 located at the housing support cavity;

[0122] The first crankshaft oil hole 801 is opened on the side wall of the crankshaft 8, and one end is connected to the fourth crankshaft oil hole 804, and the other end is connected to the auxiliary bearing cavity on the lower bracket 10; it should be noted that the auxiliary bearing cavity is used to place the auxiliary bearing 9.

[0123] The fifth crankshaft oil hole 805 is opened on the side wall of the crankshaft 8, and one end is connected to the fourth crankshaft oil hole 804, and the other end is connected to the housing support cavity; through the above structural setting, a small amount of refluxed lubricating oil will enter the fourth crankshaft oil hole 804 through the fifth crankshaft oil hole 805, and then flow out through the first crankshaft oil hole 801 to lubricate the auxiliary bearing 9 and return to the oil pool.

[0124] The oil baffle plate 11 is sleeved on the outer side of the lower bracket 10 and covers the top of the oil pool.

[0125] The lubricating oil in the housing support cavity returns to the oil pool through the oil return member 15, lubricates the secondary bearing 9 and the thrust bearing 20 through the fifth crankshaft oil hole 805, the fourth crankshaft oil hole 804, and the first crankshaft oil hole 801, and goes down along the crankshaft 8 through the gap between the housing oil return hole 508 and the crankshaft 8, is dispersed by the high-speed rotating crankshaft 8 rotor assembly 7, and is carried by the refrigerant into the scroll plate for lubrication. The lubricating oil separated from the high-pressure cavity returns to the second oil return groove 513 of the housing through the stationary plate oil return hole, and then returns to the top of the movable plate bearing 17 through the movable plate oil return hole (including the movable plate oil return sink hole 302, the movable plate first oil return hole 303, and the movable plate second oil return hole 304), to lubricate the movable plate bearing 17 and its surrounding moving pairs.

[0126] The above two embodiments can be selected and used according to actual needs.

[0127] The present invention installs the oil baffle plate through the lower bracket, which can prevent the refrigerant sucked into the air intake port from directly mixing with the lubricating oil in the oil storage chamber, affecting the oil content of the compressor refrigerant and thus affecting the performance of the compressor; under extreme conditions, when the air intake port sucks in liquid refrigerant, the oil baffle plate can effectively prevent the liquid refrigerant from mixing with the lubricating oil, thereby affecting the lubrication of the compressor and the liquid in the air intake causing liquid hammer on the vortex plate; when the compressor is tilted during operation, the oil baffle plate can effectively prevent the oil storage lubricating oil from being separated from the oil pump, ensuring that the lubricating oil in the oil storage chamber can always immerse the oil pumping port of the oil pump, thereby ensuring that the oil pump can pump oil reliably, solving the problem that the liquid return of the compressor in harsh environments causes the dilution of the lubricating oil, thereby affecting the lubrication of the compressor, and the liquid return causes the lubricating oil to generate a large amount of foam, which in extreme cases will cause liquid hammer on the vortex plate, affecting the reliable operation of the compressor.

[0128] The present invention provides a compressor, which is a vertical low-pressure chamber scroll compressor, comprising any lubrication circulation system in the above-mentioned embodiments. Further, the compressor also comprises an upper cover 1, a shell 5, a lower cover 12, a moving plate 3, a static plate 2, a motor, and a lower bracket 10.

[0129] As a further improvement of the present invention, it also includes an upper cover 1, in which an oil separation chamber 101 is arranged, and the oil separation chamber 101 is connected to the external environment through an exhaust port; in order to prevent the lubricating oil from being discharged through the oil separation pipe 19 when the compressor is tilted, in this embodiment, the oil separation chamber 101 is an oblique upward structure.

[0130] When the compressor is running, refrigerant is sucked in through the shell suction port, flows into the scroll plate (moving and stationary plates) through the shell air flow channel 511 and the shell air flow holes 506, and the scroll plate compresses the refrigerant to form high-temperature and high-pressure gas, which is discharged from the exhaust hole in the middle of the stationary plate 2 into the high-pressure chamber on the back of the stationary plate 2, and is discharged from the exhaust hole through the upper cover air flow holes 104 and the upper cover 1 oil chamber 101.

[0131] The compressor upper cover 1 is provided with an upper cover boss 102, which is matched and installed with the stator boss 201. The upper cover boss 102 divides the upper cover 1 into a high-pressure chamber, a low-pressure chamber and an oil storage chamber 205. The upper cover 1 is provided with an oil separation chamber 101 and an upper cover oil return hole 103. The oil separation chamber 101 is installed with an oil separation pipe 19, and the upper cover oil return hole 103 is installed with an oil filter 18. The high-pressure refrigerant containing lubricating oil is separated by the oil separation pipe 19 and discharged from the compressor through the exhaust hole. The separated lubricating oil flows into the oil storage chamber 205 of the stator 2 after filtering impurities through the oil filter 18.

[0132] A stator boss 201 is provided on the back side of the compressor stator 2. The stator boss 201 divides the back side of the stator 2 into a high-pressure chamber, a low-pressure chamber and an oil storage chamber. A stator groove 202 is provided on the stator boss 201 to install a sealing ring, which seals and isolates the high-pressure chamber, the low-pressure chamber and the stator oil storage chamber. The oil storage chamber of the stator 2 is filled with the lubricating oil separated by the oil chamber 101 of the upper cover 1. When the compressor is tilted, the lubricating oil in the oil storage chamber of the stator 2 can cover the stator oil return inclined hole 204, so that the lubricating oil separated from the high-pressure side of the compressor can smoothly flow back to the low-pressure side, and the oil return channel does not generate cross-flow. The stator 2 is provided with a stator air flow hole 203, which is used to connect the low-pressure chamber on the vortex tooth side of the stator 2 with the low-pressure chamber on the back side of the stator 2. The wear-resistant sheet 4 is mounted on the protruding support table provided inside the housing 5, and the side cylinder wall 207 of the static plate is mounted on the wear-resistant sheet 4. The side cylinder wall 207 of the static plate is provided with a static plate oil return straight hole 206, and the static plate oil return straight hole 206 is connected with the static plate oil return inclined hole 204. The static plate oil return hole is composed of the static plate oil return inclined hole 204 and the static plate oil return straight hole 206.

[0133] Specifically, the compressor of the present invention further includes a lower cover 12, which is sealed on the bottom of the shell 5, and the oil pool is located inside the lower cover 12; it also includes a motor stator 6 arranged in the shell 5, and a rotor assembly 7 located on the inner side of the motor stator 6 and connected to the crankshaft 8.

[0134] The moving plate 3 is drivingly connected to the crankshaft 8 via a moving plate bearing 17 .

[0135] Implementation method of the compressor lubrication system: the compressor oil storage chamber stores lubricating oil. When the compressor is running, the crankshaft 8 drives the adapter 14 to drive the oil pump 13 to pump oil. The lubricating oil is pumped into the shell bracket chamber through the oil hole of the crankshaft 8. The lubricating oil is lubricated between the crankshaft 8 and the auxiliary bearing 9 through the first crankshaft oil hole 801. The lubricating oil is pumped to the position of the moving plate bearing 17 through the third crankshaft oil hole 803 to achieve lubrication of the moving plate bearing 17 and the surrounding related moving pairs; most of the lubricating oil in the shell bracket chamber is returned to the bottom oil pool by the oil return member 15, and a small part flows down along the crankshaft 8 and is scattered by the high-speed rotating crankshaft 8. The scattered lubricating oil is partially sucked into the vortex together with the refrigerant to achieve lubrication of the vortex, and some of the scattered lubricating oil is returned to the oil pool below the shell through the shell air flow channel 511. The refrigerant containing lubricating oil after being compressed by the scroll disk is separated into gas and liquid by the oil separation pipe 19, and the separated lubricating oil is returned to the housing bracket cavity through the stator oil storage cavity 205 and the stator oil return hole, and merges with the lubricating oil on the crankshaft 8 pump to form a complete lubrication circulation system.

[0136] As a further improvement of the present invention, the compressor includes a shell 5; the shell 5 is equipped with an oil return member 15, and most of the lubricating oil in the shell bracket cavity flows back to the oil pool of the lower cover 12 through the oil return member 15; the shell bracket cavity is equipped with a main bearing 16, and a gap is left between the inner ring of the main bearing 16 and the first oil return boss 505 of the shell, and a small part of the lubricating oil in the shell bracket cavity flows along the crankshaft 8 to the rotor assembly 7 through the gap under the inner ring of the main bearing 16; the crankshaft 8 and the rotor assembly 7 rotate at high speed, breaking up the lubricating oil flowing down along the crankshaft 8, and finally the broken up lubricating oil is sucked into the scroll plate together with the refrigerant, thereby lubricating the scroll plate.

[0137] As a further improvement of the present invention, the shell 5 is circumferentially provided with a plurality of shell airflow channels 511 and a plurality of stator mounting bosses 509, and the stator mounting bosses 509 are used to mount the motor stator 6; the shell airflow channels 511 are axially arranged along the shell 5, and can circulate the refrigerant. At the same time, the shell airflow channels 511 can also lead the lubricating oil dispersed on the shell wall to the oil pool below the shell 5.

[0138] As a further improvement of the present invention, the compressor further comprises a lower bracket 10, and a bracket oil return groove 1004 is provided at a position of the lower bracket 10 corresponding to the shell air flow channel 511, for guiding the lubricating oil on the shell wall to the oil pool.

[0139] As a further improvement of the present invention, an air intake port is arranged below the stator assembly in the shell, and the air intake port is located above the lower bracket. An oil baffle is installed on the lower bracket to prevent the refrigerant sucked into the air intake port from directly mixing with the lubricating oil in the oil pool, thereby affecting the oil content of the compressor refrigerant and thus affecting the performance of the compressor; under extreme conditions, when the air intake port sucks in liquid refrigerant, the oil baffle can also effectively prevent the liquid refrigerant from mixing into the lubricating oil, thereby affecting the lubrication of the compressor and the liquid hammer caused by the suction liquid on the vortex plate; when the compressor is tilted during operation, the oil baffle can effectively prevent the oil storage lubricating oil from separating from the oil pump, thereby ensuring that the lubricating oil in the oil pool can always immerse the oil pumping port of the oil pumping component, thereby ensuring reliable oil pumping of the oil pumping component.

[0140] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0141] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0142] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0143] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0144] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0145] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0146] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A compressor lubrication circulation system, characterized in that: include: An oil storage chamber is provided on the back side of the stator plate to store lubricating oil separated from the high-pressure side of the compressor; The upper cover oil return hole is provided on the upper cover and is respectively connected with the oil separation chamber and the oil storage chamber to return the lubricating oil separated from the high-pressure side of the compressor to the oil storage chamber; The stationary plate oil return hole is provided at the bottom of the oil storage cavity and communicates with the housing support cavity so as to return the lubricating oil in the oil storage cavity to the housing support cavity; When the compressor is tilted, the lubricating oil in the oil storage cavity can always cover the oil return hole of the stator plate.

2. The lubrication circulation system according to claim 1, characterized in that: The oil storage chamber is located on the low-pressure chamber side of the stator.

3. The lubrication circulation system according to claim 1, characterized in that: The oil return hole of the static plate includes an oil return inclined hole and an oil return straight hole arranged in sequence; the oil return straight hole is opened at the front edge of the static plate; one end of the oil return inclined hole is connected to the oil return straight hole, and the other end is connected to the bottom of the oil storage cavity.

4. The lubrication circulation system according to claim 1, characterized in that: The lubrication circulation system also includes a first oil return hole of the wear-resistant plate arranged on the wear-resistant plate below the moving plate; the first oil return hole of the wear-resistant plate is arranged opposite to the oil return hole of the static plate; the lubrication circulation system also includes a shell drainage groove, which is opened on the shell support platform, and one end extends to the position below the first oil return hole of the wear-resistant plate, and the other end extends to the top of the shell support cavity.

5. The lubrication circulation system according to claim 1, characterized in that: The lubrication circulation system also includes a first oil return hole and a second oil return hole of the wear-resistant plate arranged on the wear-resistant plate below the moving plate; the first oil return hole of the wear-resistant plate is arranged opposite to the oil return hole of the static plate; the lubrication circulation system also includes a first oil return hole and a second oil return hole of the moving plate arranged on the moving plate; the first oil return hole of the moving plate is vertically arranged, one end of which is opposite to the second oil return hole of the wear-resistant plate, and the other end is connected with the horizontally arranged second oil return hole of the moving plate; the end of the second oil return hole of the moving plate extends into the crankshaft through hole of the moving plate; the lubrication circulation system also includes a casing drainage groove, which is opened on the casing support platform, and one end extends to a position below the first oil return hole of the wear-resistant plate, and the other end extends to a position below the second oil return hole of the wear-resistant plate.

6. The lubrication circulation system according to claim 4 or 5, characterized in that: The lubrication circulation system further includes a first oil return boss of the housing, a first oil return groove of the housing, a return oil member clearance groove, and an oil return member; wherein: The first oil return boss of the housing is arranged at the bottom of the housing support cavity and is located between the main bearing limiting boss and the crankshaft through hole; The first oil return groove of the housing is arranged between the inner wall of the housing bracket cavity and the main bearing limiting boss, and the first oil return groove of the housing is provided with a plurality of connecting grooves, one end of the connecting groove is connected with the first oil return groove of the housing, and the other end extends to the position of the first oil return boss of the housing; The oil return member clearance groove is arranged at the bottom of the housing bracket cavity and is respectively connected with the first oil return boss of the housing and the oil return member; The oil return member is installed on the main bearing installation side; A gap is left between the first oil return boss of the housing and the inner ring of the main bearing to form a return channel; A gap is left between the crankshaft through hole and the crankshaft to form a housing oil return hole; The shell oil return hole is communicated with the return channel.

7. The lubrication circulation system according to claim 4 or 5, characterized in that: The lubrication circulation system further includes a second oil return boss of the housing, a second oil return groove of the housing, a clearance groove of the oil return member, and an oil return member; wherein: The second oil return boss of the housing is arranged at the bottom of the housing support cavity and is located outside the crankshaft through hole; The second oil return groove of the housing is arranged between the inner wall of the housing bracket cavity and the second oil return boss of the housing, and the second oil return groove of the housing is provided with a plurality of connecting grooves, one end of the connecting groove is connected with the second oil return groove of the housing, and the other end extends to the position of the first oil return boss of the housing; A gap is left between the second oil return boss of the housing and the inner and outer rings of the main bearing to form an inner return channel and an outer return channel respectively; A gap is left between the crankshaft through hole and the crankshaft to form a shell oil return hole; the shell oil return hole is connected to the inner return channel; The oil return member is installed on the installation side of the main bearing and is communicated with the external return channel.

8. The lubrication circulation system according to claim 4 or 5, characterized in that: The lubrication circulation system further comprises a plurality of shell air flow channels which are arranged at intervals along the circumferential direction of the inner wall of the shell.

9. The lubrication circulation system according to claim 8, characterized in that: The lubrication circulation system further includes an oil pump, an adapter, a first crankshaft oil hole, a second crankshaft oil hole, a third crankshaft oil hole, and an oil baffle; wherein: The oil pump component is placed in the oil pool at the bottom of the compressor and is connected to the lower bracket through the adapter; The second crankshaft oil hole is provided at the bottom of the crankshaft and is communicated with the outlet of the oil pump member; The first crankshaft oil hole is horizontally opened on the crankshaft side wall and is connected with the second crankshaft oil hole; The third crankshaft oil hole is arranged along the axial direction of the crankshaft, and the top part extends to the bottom part of the movable plate, and the bottom part is communicated with the second crankshaft oil hole; The oil baffle is sleeved on the outside of the lower bracket and covers the top of the oil pool; A plurality of support oil return grooves are arranged on the lower support along the circumferential direction; all the support oil return grooves are arranged in one-to-one correspondence with all the shell air flow channels.

10. The lubrication circulation system according to claim 4 or 5, characterized in that: The lubrication circulation system further includes a thrust bearing, a first crankshaft oil hole, a fourth crankshaft oil hole, a fifth crankshaft oil hole, and an oil baffle; wherein: The lower end of the crankshaft is connected to the lower bracket through the thrust bearing; The fourth crankshaft oil hole is arranged in the crankshaft, and the bottom portion extends to the bottom portion of the crankshaft, and the top portion extends to the upper portion of the crankshaft located at the housing support cavity; The first crankshaft oil hole is opened on the crankshaft side wall, and one end is connected to the fourth crankshaft oil hole, and the other end is connected to the auxiliary bearing cavity on the lower bracket; The fifth crankshaft oil hole is opened on the crankshaft side wall, and one end is connected to the fourth crankshaft oil hole, and the other end is connected to the housing support cavity; The oil baffle is sleeved on the outer side of the lower bracket and covers the top of the oil pool.

11. A compressor, characterized in that: A vertical low-pressure chamber scroll compressor comprises a lubrication circulation system as described in any one of claims 1-10.

12. The compressor according to claim 11, characterized in that It also includes an upper cover, in which an oil separation chamber is arranged, and the oil separation chamber is communicated with the external environment through an exhaust port; the oil separation chamber is an oblique upward structure.

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