Compression assembly, compressor and vehicle

Abstract

The utility model provides a compression assembly, a compressor and a vehicle, and the compression assembly comprises a cylinder which comprises a containing cavity and a slip sheet groove; the crankshaft comprises an eccentric part, and the eccentric part is located in the containing cavity; the roller is mounted on the eccentric part and can rotate along with the crankshaft; the sliding piece is installed in the sliding piece groove and can slide in a reciprocating mode along the sliding piece groove, the end, close to the roller, of the sliding piece abuts against the peripheral face of the roller, and the roller and the sliding piece can divide the containing cavity of the air cylinder into an air suction cavity and an exhaust cavity; the bearings are arranged at one end, in the axial direction of the crankshaft, of the air cylinder, shaft holes are formed in the bearings, one end of the crankshaft penetrates through the shaft holes, an oil groove is formed in one end, close to the air cylinder, of at least one bearing, the oil groove is communicated with the oil supply channel, each bearing further comprises a communicating channel communicated with the oil groove, and the other end of each communicating channel is communicated with the corresponding shaft hole. According to the structure, when the compressor encounters an emergency, the bearing can be lubricated through the lubricating oil in the oil groove, so that the abrasion of the bearing in the emergency can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a compression assembly, a compressor and a vehicle. Background Art

[0002] In this solution, when a horizontal on-board compressor is operating, the compressor's rotor assembly, supported by primary and secondary bearings, drives the rollers through the eccentric portion of the crankshaft to perform eccentric compression, compressing the refrigerant in the cylinder. Simultaneously, lubricating oil from the oil sump flows through the oil guide pipe into the crankshaft through-hole, and then through the oil grooves on the crankshaft to lubricate the contact areas of the bearings, preventing wear.

[0003] However, the horizontal vehicle-mounted compressor moves with the vehicle. When the vehicle starts / brakes, the oil pool inside the compressor moves axially, causing the oil guide pipe to fail to absorb oil. No lubricating oil in the crankshaft through-hole enters the bearing area through the oil groove for lubrication, which can easily lead to the hidden danger of abnormal bearing wear.

[0004] Therefore, how to solve the problem of wear of the main and auxiliary bearings of horizontal vehicle-mounted compressors has become an urgent problem to be solved. Utility Model Content

[0005] The present application aims to at least solve the problem of severe wear of the main and auxiliary bearings of horizontal vehicle-mounted compressors existing in the prior art or related art.

[0006] To this end, a first aspect of the present application is to propose a compression assembly.

[0007] A second aspect of the present application is to provide a compressor.

[0008] A third aspect of the present application is to provide a vehicle.

[0009] The first aspect of the present application provides a compression assembly for a compressor, the compressor including an oil supply passage, the compression assembly including: a cylinder, the cylinder including a accommodating chamber and a vane groove connected to the accommodating chamber; a crankshaft including an eccentric portion, the eccentric portion being located in the accommodating chamber; a roller, mounted on the eccentric portion, located in the accommodating chamber, and capable of rotating with the crankshaft; a vane, mounted in the vane groove, capable of sliding back and forth along the vane groove, the end of the vane close to the roller abutting against the outer circumferential surface of the roller, the roller and the vane being capable of dividing the accommodating chamber of the cylinder into an intake chamber and an exhaust chamber; at least two bearings being arranged at one end of the cylinder along the axial direction of the crankshaft, the bearing being provided with an axial hole, one end of the crankshaft being passed through the axial hole, an oil groove being provided on the end of at least one bearing close to the cylinder, the oil groove being connected to the oil supply passage, the bearing also including one or more connecting channels, one end of the connecting channel being connected to the oil groove, and the other end of the connecting channel being connected to the axial hole.

[0010] The compression assembly provided herein includes a cylinder, a crankshaft, rollers, and vanes. The cylinder includes a receiving chamber and a vane slot connected to the receiving chamber. The roller is mounted on the eccentric portion of the crankshaft and can rotate eccentrically. The vane is mounted in the vane slot and can slide back and forth along the vane slot under the action of the roller. The vane can divide the internal space of the cylinder into an intake chamber and an exhaust chamber. The crankshaft can drive the roller to rotate, thereby changing the volume of the intake and exhaust chambers, thereby achieving intake and exhaust. Bearings are mounted on both axial sides of the cylinder to support both ends of the crankshaft. When the compressor is operating normally, the compressor can supply lubricating oil to the connection between the bearing and the crankshaft, as well as the connection between the bearing and the roller, through the oil supply channel to reduce wear on the bearings and other parts. The oil groove on the bearing is connected to the oil supply channel. When the compressor is operating normally, the lubricating oil can enter the oil groove and be stored in the oil groove. When the compressor encounters an emergency and the oil supply channel cannot absorb oil from the oil pool, the oil stored in the oil tank can enter the shaft hole of the bearing through the connecting channel, and then flow along the shaft hole to the surface of the bearing to lubricate the surface of the bearing, thereby reducing the wear of the bearing in emergencies and reducing the risk of abnormal wear of the bearing.

[0011] For example, for a horizontal vehicle-mounted compressor, as the vehicle moves, when the vehicle starts or brakes, the oil pool inside the compressor moves axially, causing the oil guide pipe to be unable to absorb oil. At this time, there is no lubricating oil in the crankshaft through-hole to enter the bearing area through the oil groove for lubrication, which can easily lead to the hidden danger of abnormal bearing wear. In this application, when the vehicle starts or brakes, the bearings of the compressor can be lubricated by the lubricating oil in the oil groove, and the bearings will not wear, thereby significantly reducing the risk of abnormal bearing wear. At the same time, this method of reducing bearing wear only requires processing oil grooves and connecting channels on the bearings, and no changes are required to other components, which is more conducive to the promotion and implementation of this structure.

[0012] In any of the above embodiments, optionally, at least two bearings include a first bearing, which is arranged at one end of the cylinder along the axial direction of the crankshaft, for supporting the first end of the crankshaft, and the first bearing is provided with an axial hole, an oil groove and one or more connecting channels; a second bearing, which is arranged at the other end of the cylinder along the axial direction of the crankshaft, for supporting the second end of the crankshaft, and the second bearing is provided with an axial hole, an oil groove and one or more connecting channels.

[0013] In this embodiment, there are two bearings, namely a first bearing and a second bearing. The first bearing and the second bearing are arranged on either side of an integral assembly consisting of at least two cylinders along the axial direction, and are used to support both ends of the crankshaft. When the crankshaft rotates, both bearings can rub against the eccentric portion of the crankshaft. Each bearing is provided with an oil groove and one or more connecting channels. When lubrication between the bearing and the eccentric portion is insufficient, the lubricating oil in the oil groove can lubricate the friction area between the bearing and the eccentric portion, thereby reducing bearing wear and resolving the problem of bearing wear in related solutions.

[0014] In any of the above embodiments, optionally, the oil groove is arranged in an annular shape along the circumference of the crankshaft, and the communicating channel is arranged along the radial direction of the shaft hole.

[0015] In this embodiment, the oil groove is arranged in an annular shape along the circumference of the crankshaft, which increases the oil storage capacity of the oil groove and ensures more uniform lubrication of the bearings in all directions when the lubricating oil in the oil groove is used to lubricate the bearings. The number of connecting channels can be set to 2-5 as needed, but each connecting channel extends radially along the shaft hole, thereby reducing the length of the connecting channel and allowing the oil in the oil groove to quickly reach the area requiring lubrication.

[0016] In any of the above embodiments, optionally, the communication channel is communicated with the bottom of the oil groove.

[0017] In this embodiment, the communication channel is arranged close to the bottom of the oil groove and is communicated with the bottom of the oil groove, so that the lubricating oil in the oil groove can be discharged more cleanly.

[0018] In any of the above embodiments, optionally, the crankshaft includes at least two eccentric parts, and the at least two eccentric parts are arranged at intervals along the axial direction of the crankshaft; there are at least two cylinders, rollers and slides, and at least two cylinders are arranged at intervals along the axial direction of the crankshaft, and the at least two eccentric parts, at least two rollers and at least two slides are arranged in a one-to-one correspondence with the at least two cylinders.

[0019] In this embodiment, the compression assembly includes at least two compression structures, i.e., a multi-cylinder structure. Each cylinder is equipped with corresponding rollers and vanes. This multi-cylinder design increases compression capacity and improves compressor efficiency. Two bearings are positioned at the outermost edges of the cylinders, forming friction pairs with the eccentric portion. Each bearing is equipped with an oil groove and a connecting channel to ensure lubrication.

[0020] In any of the above embodiments, optionally, the compression assembly further comprises: an isolation plate installed between two adjacent cylinders to separate the two adjacent cylinders, and the isolation plate is provided with a through hole for the crankshaft to pass through.

[0021] In this embodiment, the compression assembly further includes a separator plate. The separator plate can separate the two cylinders, allowing them to operate independently. The separator plate is provided with a through-hole through which the crankshaft can pass through the separator plate and connect to the rollers on either side.

[0022] In any of the above embodiments, optionally, the crankshaft is a hollow shaft, and a partial oil supply channel is formed inside the crankshaft. The compression assembly also includes: an oil guide vane, which is installed inside the crankshaft; an oil guide pipe, one end of which is connected to the interior of the crankshaft, and the other end of the oil guide pipe is used to connect to the oil pool.

[0023] In this embodiment, the interior of the crankshaft can be hollowed to form a partial oil supply channel. Furthermore, radial oil outlet channels can be provided on the eccentric portion of the crankshaft, etc., to deliver lubricating oil to the contact area between the bearing and the eccentric portion, thereby lubricating the contact area between the bearing and the eccentric portion. Furthermore, to ensure that the crankshaft can absorb more lubricating oil, oil guide vanes are installed within the crankshaft, allowing the crankshaft to absorb more lubricating oil from the oil sump.

[0024] Furthermore, the compression assembly further comprises a muffler, which is mounted on a side of the second bearing away from the cylinder. The muffler and the second bearing form a closed cavity, so that the gas exhausted from the second bearing does not contact the oil pool.

[0025] The technical solution of the second aspect of the present application proposes a compressor, including the compression component provided by any technical solution of the first aspect.

[0026] The compressor proposed according to the technical solution of the present application includes the compression assembly provided by any of the technical solutions of the first aspect, and therefore has all the beneficial effects of the compression assembly provided by any of the technical solutions of the first aspect.

[0027] Optionally, the compressor is a horizontal compressor. Horizontal compressors can be particularly used in vehicles.

[0028] The technical solution of the third aspect of the present application proposes a vehicle, comprising: a compression assembly provided by any technical solution of the first aspect; and / or a compressor provided by any technical solution of the second aspect.

[0029] The vehicle proposed according to the technical solution of the present application includes the compression assembly provided by any of the technical solutions of the first aspect and / or the compressor provided by any of the technical solutions of the second aspect, and therefore has all the beneficial effects of the compression assembly provided by any of the technical solutions of the first aspect and / or the compressor provided by any of the technical solutions of the second aspect. Detailed descriptions are omitted here.

[0030] Additional aspects and advantages of the present application will become apparent in the following description or may be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 A schematic structural diagram of a compression assembly according to an embodiment of the present invention is shown;

[0033] Figure 2 It shows one of the structural schematic diagrams of the first bearing of the compression assembly of one embodiment of the utility model;

[0034] Figure 3 A second structural diagram of the first bearing of the compression assembly according to an embodiment of the present invention is shown;

[0035] Figure 4 It shows one of the structural schematic diagrams of the second bearing of the compression assembly of one embodiment of the utility model;

[0036] Figure 5 The second structural schematic diagram shows the second bearing of the compression assembly of an embodiment of the present utility model.

[0037] Reference numerals:

[0038] 1 Cylinder, 12 Accommodating chamber, 14 Vane groove, 2 Crankshaft, 22 Eccentric portion, 24 Oil supply channel, 3 Roller, 32 First roller, 34 Second roller, 4 Vane, 42 First vane, 44 Second vane, 5 Bearing, 52 Shaft hole, 54 Oil groove, 56 Connecting channel, 58 First bearing, 59 Second bearing, 6 Isolation plate, 7 Oil guide vane, 8 Oil guide pipe, 9 Muffler. DETAILED DESCRIPTION

[0039] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0041] Refer to the following Figures 1 to 5 To describe a compression assembly, a compressor and a vehicle provided according to some embodiments of the present application.

[0042] like Figures 1 to 5As shown, the first aspect of the present application provides a compression assembly for a compressor, the compressor including an oil supply channel 24, the compression assembly including a cylinder 1, a crankshaft 2, a roller 3 and a vane 4 and at least two bearings 5. The cylinder 1 includes a accommodating chamber 12 and a vane groove 14 connected to the accommodating chamber 12. The crankshaft 2 includes an eccentric portion 22, and the eccentric portion 22 is located in the accommodating chamber 12. The roller 3 is mounted on the eccentric portion 22, is located in the accommodating chamber 12, and can rotate with the crankshaft 2. The vane 4 is mounted in the vane groove 14 and can slide back and forth along the vane groove 14. The end of the vane 4 close to the roller 3 abuts against the outer peripheral surface of the roller 3. The roller 3 and the vane 4 can separate the accommodating chamber 12 of the cylinder 1 into an intake chamber and an exhaust chamber. At least two bearings 5 ​​are arranged at one end of the cylinder 1 along the axial direction of the crankshaft 2. An axial hole 52 is provided on the bearing 5. One end of the crankshaft 2 is passed through the axial hole 52. An oil groove 54 is provided on the end of at least one bearing 5 close to the cylinder 1. The oil groove 54 is connected to the oil supply channel 24. The bearing 5 also includes one or more connecting channels 56. One end of the connecting channel 56 is connected to the oil groove 54, and the other end of the connecting channel 56 is connected to the axial hole 52.

[0043] The compression assembly provided by the present application includes a cylinder 1, a crankshaft 2, a roller 3 and a vane 4. The cylinder 1 includes a accommodating chamber 12 and a vane groove 14 connected to the accommodating chamber 12. The roller 3 is mounted on the eccentric portion 22 of the crankshaft 2 and can rotate eccentrically. The vane 4 is mounted on the vane groove 14 and can slide back and forth along the vane groove 14 under the action of the roller 3. The internal space of the cylinder 1 can be divided into an intake chamber and an exhaust chamber by the vane 4. The crankshaft 2 can drive the roller 3 to rotate, thereby changing the volume of the intake chamber and the exhaust chamber, thereby realizing intake and exhaust. Bearings 5 ​​are installed on both axial sides of the cylinder 1, and the two ends of the crankshaft 2 can be supported by the bearings 5. When the compressor is operating normally, the compressor can provide lubricating oil to the connection between the bearing 5 and the crankshaft 2, as well as the connection between the bearing 5 and the roller 3, through the oil supply channel 24 to reduce the wear of the bearing 5, etc. The oil groove 54 on the bearing 5 is connected to the oil supply channel 24. When the compressor is operating normally, lubricating oil can enter the oil groove 54 and be stored in the oil groove 54. When the compressor encounters an emergency and the oil supply channel 24 cannot draw oil from the oil pool, the oil stored in the oil groove 54 can enter the shaft hole 52 of the bearing 5 through the connecting channel 56, and then flow along the shaft hole 52 to the surface of the bearing 5 to lubricate the surface of the bearing 5. In this way, the wear of the bearing 5 in the event of an emergency can be reduced, and the risk of abnormal wear of the bearing 5 can be reduced.

[0044] For example, for a horizontal vehicle-mounted compressor, as the vehicle moves, when the vehicle starts or brakes, the oil pool inside the compressor moves axially, causing the oil guide pipe to be unable to absorb oil. At this time, there is no lubricating oil in the crankshaft through-hole to enter the bearing area through the oil groove for lubrication, which can easily lead to the hidden danger of abnormal wear of the bearing. In the present application, when the vehicle starts or brakes, the bearing 5 of the compressor can be lubricated by the lubricating oil in the oil groove 54, and the bearing 5 will not wear, thereby significantly reducing the risk of abnormal wear of the bearing 5. At the same time, this method of reducing the wear of the bearing 5 only requires processing the oil groove 54 and the connecting channel 56 on the bearing 5, and no changes are required to other components, which is more conducive to the promotion and implementation of the structure.

[0045] In any of the above embodiments, optionally, Figure 1 As shown, at least two bearings 5 ​​include a first bearing 58 and a second bearing 59. The first bearing 58 is provided at one end of the cylinder 1 along the axial direction of the crankshaft 2 for supporting the first end of the crankshaft 2. Figure 2 and Figure 3 As shown, the first bearing 58 is provided with an axial hole 52, an oil groove 54 and one or more communication channels 56. Figure 1 As shown, the second bearing 59 is provided at the other end of the cylinder 1 along the axial direction of the crankshaft 2, for supporting the second end of the crankshaft 2. Figure 4 and Figure 5 As shown, the second bearing 59 is provided with an axial hole 52 , an oil groove 54 and one or more communication channels 56 .

[0046] In this embodiment, there are two bearings 5, namely a first bearing 58 and a second bearing 59. The first bearing 58 and the second bearing 59 are arranged on both sides of the entire structure composed of at least two cylinders along the axial direction, and are used to support the two ends of the crankshaft 2. When the crankshaft 2 rotates, both bearings 5 ​​can rub against the eccentric portion 22 of the crankshaft 2. An oil groove 54 and one or more connecting channels 56 are provided on each bearing 5. When the lubrication between the bearing 5 and the eccentric portion 22 is insufficient, the lubricating oil in the oil groove 54 can lubricate the friction area between the bearing 5 and the eccentric portion 22, thereby reducing the wear of the bearing 5 and solving the problem of easy wear of the bearing 5 in related solutions.

[0047] In any of the above embodiments, optionally, Figure 3 and Figure 5 As shown, the oil groove 54 is arranged in an annular shape along the circumference of the crankshaft 2 , and the communication channel 56 is arranged along the radial direction of the shaft hole 52 .

[0048] In this embodiment, the oil groove 54 is annularly arranged along the circumference of the crankshaft 2, which increases the oil storage capacity of the oil groove 54 and provides more uniform lubrication of the bearing 5 in all directions when the lubricating oil in the oil groove 54 is used to lubricate the bearing 5. The number of communication channels 56 can be set to 2-5 as needed, but each communication channel 56 extends radially along the shaft hole 52, thereby reducing the length of the communication channel 56 and allowing the oil in the oil groove 54 to quickly reach the area requiring lubrication.

[0049] In any of the above embodiments, optionally, Figure 1 、 Figure 2 and Figure 4 As shown, the communication passage 56 is communicated with the bottom of the oil groove 54 .

[0050] In this embodiment, the communication channel 56 is disposed near the bottom of the oil groove 54 and is communicated with the bottom of the oil groove 54 , so that the lubricating oil in the oil groove 54 can be discharged more cleanly.

[0051] In any of the above embodiments, optionally, Figure 1 As shown, the crankshaft 2 includes at least two eccentric parts 22, and the at least two eccentric parts 22 are arranged at intervals along the axial direction of the crankshaft 2; there are at least two cylinders 1, rollers 3 and slides 4, and at least two cylinders 1 are arranged at intervals along the axial direction of the crankshaft 2, and the at least two eccentric parts 22, at least two rollers 3 and at least two slides 4 are arranged in a one-to-one correspondence with the at least two cylinders 1.

[0052] In this embodiment, the compression assembly includes at least two compression structures, i.e., a multi-cylinder structure. Each cylinder 1 is equipped with a corresponding roller 3 and vane 4. This multi-cylinder design increases compression capacity and improves compressor efficiency. Two bearings 5 ​​are positioned at the outermost edges of the cylinders 1. Both bearings 5 ​​form friction pairs with the eccentric portion 22. Each bearing 5 is equipped with an oil groove 54 and a connecting channel 56 to ensure lubrication.

[0053] In a specific embodiment, if Figure 1 As shown, there are two cylinders, namely a first cylinder and a second cylinder, two slides, namely a first slide 42 and a second slide 44, and two rollers, namely a first roller 32 and a second roller 34.

[0054] In any of the above embodiments, optionally, Figure 1 As shown, the compression assembly further includes: an isolation plate 6 installed between two adjacent cylinders 1 to separate the two adjacent cylinders 1, and a through hole for the crankshaft 2 to pass through is provided on the isolation plate 6.

[0055] In this embodiment, the compression assembly further includes a separator plate 6. This separator plate 6 separates the two cylinders 1, allowing them to operate independently. Separator plate 6 is provided with a through-hole, through which the crankshaft 2 passes through the separator plate 6 and connects to the rollers 3 on either side.

[0056] In any of the above embodiments, optionally, Figure 1 As shown, the crankshaft 2 is a hollow shaft, and a partial oil supply channel 24 is formed inside the crankshaft 2. The compression assembly also includes: an oil guide vane 7, which is installed inside the crankshaft 2; an oil guide pipe 8, one end of which is connected to the interior of the crankshaft 2, and the other end of the oil guide pipe 8 is used to connect to the oil pool.

[0057] In this embodiment, the interior of the crankshaft 2 can be configured as a hollow structure, thereby forming a portion of the oil supply passage 24 within the crankshaft 2. Furthermore, radial oil outlet passages can be provided on the eccentric portion 22 of the crankshaft 2, etc., to deliver lubricating oil to the contact area between the bearing 5 and the eccentric portion 22, thereby lubricating the contact area between the bearing 5 and the eccentric portion 22. Furthermore, to ensure that the crankshaft 2 can absorb more lubricating oil, oil guide vanes 7 are installed within the crankshaft 2. The oil guide vanes 7 enable the crankshaft 2 to absorb more lubricating oil from the oil sump.

[0058] Further, if Figure 1 As shown, the compression assembly further includes a muffler 9, which is mounted on the side of the second bearing 59 away from the cylinder 1. The muffler 9 and the second bearing 59 form a closed cavity so that the gas discharged from the second bearing 59 does not contact the oil pool.

[0059] An embodiment of the second aspect of the present application provides a compressor, comprising the compression assembly provided by any embodiment of the first aspect.

[0060] The compressor proposed in the embodiment of the present application includes the compression assembly provided by any embodiment of the first aspect, and therefore has all the beneficial effects of the compression assembly provided by any embodiment of the first aspect, which will not be described in detail here.

[0061] Optionally, the compressor is a horizontal compressor. Horizontal compressors can be particularly used in vehicles.

[0062] An embodiment of the third aspect of the present application provides a vehicle, comprising: the compression assembly provided by any embodiment of the first aspect; and / or the compressor provided by any embodiment of the second aspect.

[0063] The vehicle provided in accordance with the embodiments of the present application includes the compression assembly provided in any embodiment of the first aspect and / or the compressor provided in any embodiment of the second aspect, and therefore has all the beneficial effects of the compression assembly provided in any embodiment of the first aspect and / or the compressor provided in any embodiment of the second aspect. Detailed description thereof will not be given here.

[0064] A horizontal compressor for vehicles is described in detail below.

[0065] In a related proposal, the bearing lubrication structure for a horizontal on-vehicle compressor features radial bearings for both the main and countershafts, each with a through-hole suitable for the crankshaft's long axis. The bearing surfaces facing the cylinder feature annular grooves that soften bearing stiffness and provide oil storage. Radial oil grooves are located on the crankshaft's long and short axis, as well as on the eccentric portion, connecting the crankshaft's internal through-holes to the surfaces of the main and countershaft bearings and the eccentric bearing. The horizontal compressor's oil sump is located at the compressor's base, with one section of the oil guide pipe extending into the sump and the other section mounted on the lower muffler, which is assembled with the countershaft bearing. An oiling vane is installed just beyond the crankshaft's internal through-holes.

[0066] When the compressor is operating, the crankshaft rotor assembly, supported by the primary and secondary bearings, drives the rollers through the eccentric portion of the crankshaft to perform eccentric compression motion, compressing the refrigerant in the cylinder. Simultaneously, lubricating oil from the oil sump flows through the oil guide pipe into the crankshaft through-hole, and then through the oil grooves on the crankshaft to lubricate the contact areas of the bearings, preventing wear.

[0067] However, the horizontal vehicle-mounted compressor moves with the vehicle. When the vehicle starts / brakes, the oil pool inside the compressor moves axially, causing the oil guide pipe to fail to absorb oil. No lubricating oil in the crankshaft through-hole enters the bearing area through the oil groove for lubrication, which can easily lead to the hidden danger of abnormal bearing wear.

[0068] In order to solve the problem that the oil guide pipe cannot absorb oil due to axial movement of the lubricating oil caused by vehicle movement, and the bearing area cannot be lubricated, the current solutions are: 1. Adding a coating to the surface of the bearing or shaft to improve wear resistance; 2. Increasing the oil seal volume and adding an oil baffle inside the compressor to reduce the axial movement of the lubricating oil in the compressor oil pool with the vehicle.

[0069] This embodiment aims to solve the wear problem of the main and auxiliary bearings of the horizontal vehicle-mounted compressor, and proposes a radial oil path structure of the annular grooves of the main and auxiliary bearings, which can effectively improve the lubrication reliability.

[0070] This embodiment relates to a rotary compressor, comprising: a shaft system; a main bearing (i.e., the first bearing 58), an annular groove (i.e., the oil groove 54) is provided at the root of the main bearing, and a radial connecting channel (i.e., the connecting channel 56) is provided at the root of the annular groove; a secondary bearing (i.e., the second bearing 59), an annular groove is provided at the root of the secondary bearing, and a radial connecting channel is provided at the root of the annular groove; a crankshaft 2, the crankshaft mainly comprises a long shaft, a short shaft and an eccentric part 22, the long shaft and the main bearing form a friction pair; the short shaft and the secondary main bearing form a friction pair, the lower thrust surface of the eccentric part is located on the upper end surface of the secondary bearing, which plays a role in supporting and restraining the crankshaft; a roller 3, the roller is installed on the eccentric part of the crankshaft, and the lower end surface of the roller contacts the upper end surface of the secondary bearing; a cylinder 1, the cylinder 1 is located between the main and secondary bearings, and is fixed and constrained to the main and secondary bearings by screws; the cylinder 1 and the main and secondary bearings form a cavity, and the eccentric part 22 and the roller of the crankshaft 2 are located in this cavity. The eccentric part of the crankshaft and the roller crankshaft have an eccentric shaft and an inclined profile at its upper end; the vane 4, the vane 4 is installed in the cylinder vane groove, and the head contacts the roller 3, which plays the role of dividing the suction chamber and the compression chamber; the muffler 9 forms a closed cavity at the lower part of the auxiliary bearing, so that the gas discharged from the auxiliary bearing does not contact the oil pool, but is transferred to the upper part of the pump body through the through hole in the pump body; the oiling blade (specifically, it can be an oil guide blade 7), the oiling blade is installed at the lower end of the through hole inside the crankshaft, which plays the role of enhancing oil suction; the oil guide pipe 8, one end of which is installed on the lower muffler, connected to the through hole inside the crankshaft, and the other end extends to the oil pool.

[0071] Furthermore, the radial connecting channel of the annular groove is located at the root of the annular groove of the main and secondary bearings. The main and secondary bearings support the entire component and form a cavity with the cylinder. Driven by the motor rotor, the crankshaft rotates. The crankshaft's long shaft and the main bearing form a friction pair, the short shaft and the secondary bearing form a friction pair, the eccentric shaft and the roller form a friction pair, and the eccentric shaft's lower thrust surface and the secondary bearing form a thrust bearing friction pair. When the crankshaft rotates, it drives the rollers and vanes to move, compressing the gas flowing into the cylinder intake chamber. During the process of rotating and compressing the gas, the crankshaft is subjected to gas force, which acts on the friction pair formed by its long and short shafts and the main and secondary bearings. When lubrication is insufficient, the friction pair will wear.

[0072] To ensure good lubrication of the friction pair, lubricating oil must be introduced into the gap between them. When the crankshaft rotates, the lubricating oil in the oil pool is introduced into the crankshaft through-hole through the suction pipe, and then supplied to the friction pair through the radial oil grooves on the crankshaft major and minor shafts and the eccentric shaft.

[0073] When a horizontal vehicle-mounted compressor moves axially, the lubricating oil in the friction pair of the main and secondary bearings may be thrown out, and the oil guide pipe cannot transport the lubricating oil to the crankshaft through-hole and lubricate the friction pair through the radial oil groove, causing wear.

[0074] The radial connecting channel of the annular groove of the main and secondary bearings supplies the lubricating oil stored in the annular groove of the main and secondary bearings to the main and secondary bearings when the lubricating oil is thrown out in the friction pair of the main and secondary bearings and there is no lubricating oil supplied to the radial oil groove of the crankshaft, so as to ensure the normal lubrication of the main and secondary bearings.

[0075] The rotary compressor shaft system of this embodiment includes: a crankshaft, a main bearing, an upper cylinder, an upper roller, an upper sliding vane, a partition, a lower cylinder, a lower roller, a lower sliding vane, a secondary bearing, an upper oil blade, a lower muffler, an oil guide pipe, and a main shaft annular groove, a main bearing annular groove radial connecting channel and a secondary shaft annular groove, and a secondary bearing annular groove connecting channel.

[0076] The main bearing is welded to the compressor's main housing. The main bearing, upper cylinder, partition, lower cylinder, auxiliary bearing, and lower muffler are secured together with screws. The crankshaft's major axis forms a friction pair with the main bearing, while the minor axis forms a friction pair with the auxiliary bearing. The thrust surface of the crankshaft's lower eccentric contacts the upper end face of the auxiliary bearing, forming the thrust bearing. These friction pairs both restrain and support the crankshaft. The upper eccentric forms a friction pair with the upper roller, while the lower eccentric forms a friction pair with the lower roller. The upper vane fits into the upper cylinder's vane slot, with its head contacting the upper roller, dividing the upper cylinder's internal cavity into suction and discharge chambers. The lower vane fits into the lower cylinder's vane slot, with its head contacting the upper roller, dividing the upper cylinder's internal cavity into suction and discharge chambers. The upper oil vane fits into the crankshaft's internal through-hole. The lower muffler is assembled with the oil guide pipe, one end of which is connected to the crankshaft through-hole and the other end extends into the oil sump.

[0077] The crankshaft rotates under the drive of the motor rotor. The rotation of the crankshaft drives the upper and lower rollers and the upper and lower slides to move, and as it rotates, it compresses the refrigerant gas in the compression chamber. The force acting on the upper and lower rollers of the compressed refrigerant gas is transmitted to the upper and lower eccentric parts of the crankshaft, and then acts on the main and secondary bearing friction pairs composed of the crankshaft long shaft and main bearing, and the crankshaft short shaft and secondary bearing.

[0078] As the crankshaft rotates, the oil pipe draws lubricating oil from the oil reservoir into the crankshaft through-hole. The oil is then delivered through the crankshaft's major and minor shafts and the oil groove on the eccentric section to the friction pair for lubrication. The annular grooves in the main and auxiliary bearings also serve as oil reservoirs.

[0079] The horizontal vehicle-mounted compressor moves with the vehicle. When the vehicle starts or brakes, the lubricating oil in the friction pairs of the main and secondary bearings is thrown out, and the oil pool moves axially with the compressor. The oil guide pipe cannot absorb the oil, resulting in lack of lubricating oil in the friction pairs of the main and secondary bearings and wear.

[0080] The radial connecting channel of the main bearing annular groove and the connecting channel of the auxiliary bearing annular groove are respectively located at the roots of the main bearing annular groove and the auxiliary bearing annular groove. When the lubricating oil in the friction pair is insufficient, the lubricating oil in the main bearing annular groove and the auxiliary bearing annular groove is supplied to the friction pair through the radial connecting channel to ensure good lubrication of the friction pair.

[0081] Furthermore, an inclined profile structure is provided on the upper end surface of the eccentric shaft of the crankshaft, the diameter of the communication channel is 0.5mm-2mm, and the number of the communication channels is preferably 2-5 evenly distributed along the circumference of the crankshaft.

[0082] The compressor of this embodiment incorporates radial communication channels in the annular grooves of the primary and secondary bearings. When lubricating oil in the primary and secondary bearings is ejected due to axial movement of the compressor, and the tail oil suction pipe is unable to draw oil to the bearings due to axial movement of the lubricating oil in the oil sump, the radial communication channels in the annular grooves of the primary and secondary bearings deliver the stored lubricating oil to the bearings, ensuring proper lubrication. Under normal circumstances, the roots of the annular grooves of the primary and secondary bearings also experience the highest oil pressure, and the radial communication channels at the roots of the annular grooves also help reduce the oil film pressure in this area.

[0083] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" 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 application. In this specification, the illustrative expressions 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 suitable manner in any one or more embodiments or examples.

[0084] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A compression assembly, characterized in that: Used for a compressor, the compressor includes an oil supply passage, and the compression assembly includes: A cylinder comprising a receiving cavity and a sliding vane groove communicating with the receiving cavity; A crankshaft comprising an eccentric portion, wherein the eccentric portion is located in the accommodating cavity; a roller, mounted on the eccentric portion, located in the accommodating cavity, and capable of rotating with the crankshaft; a sliding vane installed in the sliding vane groove and capable of sliding back and forth along the sliding vane groove, wherein one end of the sliding vane close to the roller abuts against the outer circumferential surface of the roller, and the roller and the sliding vane are capable of dividing the accommodating chamber of the cylinder into an intake chamber and an exhaust chamber; At least two bearings, the bearings are arranged at one end of the cylinder along the axial direction of the crankshaft, the bearings are provided with an axial hole, one end of the crankshaft is passed through the axial hole, at least one of the bearings is provided with an oil groove on the end close to the cylinder, the oil groove is connected to the oil supply channel, the bearing further includes one or more communicating channels, one end of the communicating channel is connected to the oil groove, and the other end of the communicating channel is connected to the axial hole.

2. The compression assembly according to claim 1, wherein At least two of the bearings include: a first bearing, disposed at one end of the cylinder along the axial direction of the crankshaft, for supporting the first end of the crankshaft, the first bearing being provided with the shaft hole, the oil groove, and one or more communicating channels; The second bearing is provided at the other end of the cylinder along the axial direction of the crankshaft and is used to support the second end of the crankshaft. The second bearing is provided with the shaft hole, the oil groove and one or more communicating channels.

3. The compression assembly according to claim 1, wherein The oil groove is arranged in an annular shape along the circumference of the crankshaft, and the communication channel is arranged along the radial direction of the shaft hole.

4. The compression assembly according to claim 1, wherein The communication channel is communicated with the bottom of the oil groove.

5. The compression assembly according to claim 1, wherein The crankshaft comprises at least two eccentric portions, and the at least two eccentric portions are spaced apart along the axial direction of the crankshaft; There are at least two cylinders, rollers and slides, at least two cylinders are spaced apart along the axial direction of the crankshaft, and at least two eccentric parts, at least two rollers and at least two slides are arranged in a one-to-one correspondence with at least two cylinders.

6. The compression assembly according to claim 1, wherein Also includes: An isolation plate is installed between two adjacent cylinders to separate the two adjacent cylinders, and a through hole for the crankshaft to pass through is provided on the isolation plate.

7. The compression assembly according to any one of claims 1 to 6, characterized in that The crankshaft is a hollow shaft, and the interior of the crankshaft forms part of the oil supply channel. The compression assembly further includes: An oil guide vane is installed in the crankshaft; An oil guide pipe, one end of which is connected to the interior of the crankshaft, and the other end of which is used to connect to an oil pool.

8. A compressor, characterized in that: Comprising a compression assembly as claimed in any one of claims 1 to 7.

9. The compressor according to claim 8, characterized in that The compressor is a horizontal compressor.

10. A vehicle, characterized in that: include: A compression assembly as claimed in any one of claims 1 to 7; and / or A compressor as claimed in claim 8 or 9.

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