CN218093451U

CN218093451U - Crankshaft eccentric wheel assembly, compressor and gas regulating equipment

Info

Publication number: CN218093451U
Application number: CN202222427330.1U
Authority: CN
Inventors: 祝韬; 阙沛祯; 梁社兵; 崔雪梅
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2022-12-20
Anticipated expiration: 2032-09-13

Abstract

The application relates to the technical field of compressors, and particularly discloses a crankshaft eccentric wheel assembly, a compressor and gas regulating equipment. Wherein, bent axle eccentric wheel subassembly includes: eccentric wheel body, block structure, buffer structure and piston ring, block structure slidable ground links to each other with the eccentric wheel body, and the eccentric wheel body links to each other with buffer structure respectively with the block structure, and the inner wall of cylinder contacts with the outer wall of piston ring, and eccentric wheel body and block structure all contact with the inner wall of piston ring. The buffer structure is used for fixing and supporting the block structure and the eccentric wheel body, and can absorb liquid pressure to adjust a gap between the inner wall of the air cylinder and the outer wall of the piston ring when pressing oil, so that oil can pass through the gap, and the crankshaft eccentric wheel assembly is protected. The problem of among the prior art bent axle eccentric wheel subassembly be integrated into one piece structure, when having lubricating oil in the cylinder, press oil phenomenon to lead to bent axle eccentric wheel subassembly to take place serious distortion easily, cause bent axle eccentric wheel subassembly to become invalid has been solved effectively to this application.

Description

Crankshaft eccentric wheel assembly, compressor and gas regulating equipment

Technical Field

The application relates to the technical field of compressors, in particular to a crankshaft eccentric wheel assembly, a compressor and gas regulating equipment.

Background

With the development of compressor technology, the research and development of large-scale compressors become an industry development trend, and with the increase of displacement, the part processing and reliability of the compressors face more severe tests. The rotor compressor mainly comprises a shell assembly, a pump body assembly, a motor assembly and a liquid distributor assembly, wherein the pump body assembly comprises a flange, a roller, a cylinder, an eccentric shaft, a partition plate, a sliding sheet and the like. The main and auxiliary bearings of the large-specification compressor have large span, the eccentric shaft is long in length, the eccentric shaft is limited to be machined, and even the machining efficiency is seriously influenced. In the vacuum limit reliability test process of a large-specification compressor, the compressor pump body cannot suck air under the condition that the air suction pressure valve is closed, the eccentric shaft drives the roller to do rotary motion in the cylinder, the cylinder is pumped into negative pressure, the relative pressure in the compressor shell is high, lubricating oil in the compressor shell penetrates into the cylinder from high pressure to low pressure through an internal gap, the lubricating oil enters the cylinder and cannot be discharged, and the phenomenon of oil pressing of the roller in the rotating process in the cylinder is caused.

At present, the processing mode of pressing oil is to increase the gap between the roller and the inner wall of the cylinder, so that the oil is divided from the large gap to avoid pressing the oil, the oil pressing phenomenon is avoided, and the problem generated by part of reliability tests can be solved. In the prior art, when a large gap is not formed, the outer wall of the eccentric shaft is in contact with the cylinder or is in contact with the cylinder through the piston ring sleeved outside the cylinder in the working process of the eccentric shaft, when lubricating oil appears in the cylinder, the oil cannot be discharged in time to produce the phenomenon of pressing the oil, the eccentric cam on the eccentric shaft is high in rigidity and generally has an integrally formed structure with the eccentric shaft, the eccentric cam cannot avoid the oil in the radial direction, so that the hydraulic pressure directly acts on the eccentric cam, the eccentric shaft is seriously distorted and deformed in the extrusion process, and the reliability of the eccentric shaft is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The application provides a bent axle eccentric wheel subassembly, compressor and gaseous adjusting equipment to bent axle eccentric wheel subassembly is the integrated into one piece structure among the solution prior art, when having lubricating oil in the cylinder, presses the oil phenomenon and leads to bent axle eccentric wheel subassembly to take place serious distortion easily, causes the problem that bent axle eccentric wheel subassembly became invalid.

In a first aspect, the present application provides a crankshaft eccentric wheel assembly comprising: the piston ring comprises an eccentric wheel body, a block structure, a buffering structure and a piston ring, wherein the block structure is connected with the eccentric wheel body in a sliding manner; the eccentric wheel body and the block structure are respectively connected with the buffer structure; the inner wall of cylinder contacts with the outer wall of piston ring, and eccentric wheel body and block structure all contact with the inner wall of piston ring.

Furthermore, one side of the eccentric wheel body close to the block structure is provided with a first matching portion, one side of the block structure close to the eccentric wheel body is provided with a second matching portion, and the first matching portion and the second matching portion can be mutually attached.

Furthermore, the first matching part and the second matching part are both planes, and the first matching part and the second matching part are arranged in parallel.

Further, the buffer structure further comprises an adjusting screw, a threaded hole is formed in the first matching portion, a counter bore is formed in one side, away from the eccentric wheel body, of the block structure, the counter bore penetrates through the second matching portion, the adjusting screw penetrates through the counter bore to be in threaded connection with the threaded hole, and the sum of the length of the counter bore and the length of the threaded hole is smaller than the length of the adjusting screw.

Further, buffer structure still includes the spring, and first cooperation portion is provided with first ring channel, and first ring channel encircles the screw hole setting, and second cooperation portion sets up the second ring channel, and the second ring channel encircles the counter bore setting, and adjusting screw's the week outside is located to the spring housing, and the first end of spring sets up in first ring channel, and the second end of spring sets up in the second ring channel.

Further, the eccentric wheel body includes first shaft segment, first cooperation portion sets up on first shaft segment, the week outside that first cooperation portion was kept away from to first shaft segment is the arc setting, the block structure includes first platform type section, second cooperation portion sets up on first platform type section, one side that second cooperation portion was kept away from to first platform type section is the arc setting, when first cooperation portion and the laminating of second cooperation portion, first shaft segment and first platform type section make up into the cylinder.

Further, the block structure still includes second platform type section, and second platform type section links to each other with the mesa of first platform type section is fixed, and the eccentric wheel body still includes the second axle section, and the second axle section links to each other with first axle section is fixed, and the second axle section can laminate each other with second platform type section, and when first cooperation portion and the laminating of second cooperation portion, the second axle section links to each other wholly with second platform type section, and holistic cross-section holds in the cross-section of cylinder completely.

Furthermore, the block structure further comprises a buffering through hole, the buffering through hole is arranged in the first shaft section, and the buffering through hole penetrates through the first shaft section along the thickness direction of the eccentric wheel body.

Furthermore, the buffer through hole comprises a first arc section and a second arc section, the two ends of the first arc section are connected with the second arc section, the opening directions of the first arc section and the second arc section are the same, and the arc length of the first arc section is larger than that of the second arc section. Further, bent axle eccentric wheel subassembly still includes the axis body, and the eccentric wheel body is a plurality of, and a plurality of eccentric wheel bodies and axis body are integrated into one piece structure.

In a second aspect, the present application provides a compressor comprising the crankshaft eccentric wheel assembly described above.

In a third aspect, the present application provides a gas conditioning apparatus comprising a compressor as described above.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the embodiment of the application provides a bent axle eccentric wheel subassembly, compressor and gaseous adjusting equipment, wherein, bent axle eccentric wheel subassembly includes: eccentric wheel body, block structure, buffer structure and piston ring, block structure slidable ground links to each other with the eccentric wheel body, and the eccentric wheel body links to each other with buffer structure respectively with the block structure, and the inner wall of cylinder contacts with the outer wall of piston ring, and eccentric wheel body and block structure all contact with the inner wall of piston ring. The arrangement of the buffer structure enables the block structure and the eccentric wheel body to be relatively fixed in the condition that lubricating oil does not exist in the air cylinder, and the block structure and the eccentric wheel body are filled in the piston ring and abut against the inner wall of the piston ring. When having lubricating oil in the cylinder, fluid contacts with the outer wall of cylinder inner wall and piston ring when the space diminishes gradually, apply the effort to the outer wall of piston ring, the piston ring is pushed the block structure to the eccentric wheel body, buffer structure is compressed, produce the clearance between piston ring and the cylinder, fluid can pass through in the clearance, the hydraulic pressure that fluid brought shifts for buffer structure with the energy storage of other forms, avoid direct great effort of applying to bent axle eccentric wheel subassembly of fluid, make bent axle eccentric wheel subassembly take place serious distortion. The problem that the crankshaft eccentric wheel assembly fails due to the fact that severe distortion of the crankshaft eccentric wheel assembly easily occurs due to the fact that oil pressing phenomenon exists when lubricating oil exists in the cylinder is effectively solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is an exploded view of a crankshaft eccentric wheel assembly according to an embodiment of the present disclosure;

FIG. 2 is a top schematic view of the crankshaft eccentric wheel assembly of FIG. 1;

FIG. 3 is a front schematic view of the crankshaft eccentric assembly of FIG. 2;

FIG. 4 is a top view of the eccentric crankshaft assembly of FIG. 2 with the first mating portion engaged with the second mating portion;

FIG. 5 isbase:Sub>A schematic cross-sectional view of the crankshaft eccentric assembly of FIG. 4 in the direction A-A.

FIG. 6 is a schematic cross-sectional view of a pump body of a compressor provided in accordance with an embodiment of the present application;

FIG. 7 is a schematic cross-sectional view taken along the direction B-B of the pump body of the compressor of FIG. 6.

Wherein the figures contain the following reference numerals:

10. an eccentric wheel body; 11. a first mating portion; 111. a threaded hole; 112. a first annular groove; 12. a first shaft section; 13. a second shaft section; 20. a block structure; 21. a second mating portion; 211. a second annular groove; 22. a counter bore; 23. a first bench type section; 24. a second bench section; 25. a buffer through hole; 251. a first arcuate segment; 252. a second arcuate segment; 30. a buffer structure; 31. a spring; 32. an adjusting screw; 40. a piston ring; 50. a cylinder; 51. a slip sheet structure; 52. a fluid aperture; 60. a shaft body; 70. a bulkhead assembly; 71. a first separator; 72. a second separator; 80. a connection assembly; 81. a first connecting member; 82. a second connecting member; 90. a sound attenuation assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.

As shown in fig. 1 to 5, in a first aspect, in the technical solution of this embodiment, there is provided a crankshaft eccentric wheel assembly, including: the eccentric wheel comprises an eccentric wheel body 10, a block structure 20, a buffer structure 30 and a piston ring 40, wherein the block structure 20 is connected with the eccentric wheel body 10 in a sliding manner; the eccentric wheel body 10 and the block structure 20 are respectively connected with a buffer structure 30; the inner wall of the cylinder 50 is in contact with the outer wall of the piston ring 40, and the eccentric wheel body 10 and the block structure 20 are in contact with the inner wall of the piston ring 40.

As shown in fig. 2 to 5, in the solution of the present embodiment, the arrangement of the buffering structure 30 keeps the relative positions of the block structure 20 and the eccentric wheel body 10 fixed when there is no lubricating oil in the cylinder 50, and fills the piston ring 40 to abut against the inner wall of the piston ring 40. When there is lubricating oil in the cylinder 50, fluid when the space diminishes gradually contacts with the outer wall of cylinder 50 inner wall and piston ring 40 simultaneously, apply the effort to the outer wall of piston ring 40, piston ring 40 pushes block structure 20 to eccentric wheel body 10, buffer structure 30 is compressed, produce the clearance between piston ring 40 and the cylinder 50, fluid can pass through in the clearance, the fluid pressure that fluid brought shifts for buffer structure 30 with the energy storage of other forms, avoid the direct great effort of applying of fluid to bent axle eccentric wheel subassembly, make bent axle eccentric wheel subassembly take place serious distortion. The problem of among the prior art bent axle eccentric wheel subassembly be integrated into one piece structure, when having lubricating oil in the cylinder, press oil phenomenon to lead to bent axle eccentric wheel subassembly to take place serious distortion easily, cause bent axle eccentric wheel subassembly to become invalid has been solved effectively to this application.

It should be noted that, the buffer structure 30 has a certain amount of elastic deformation, and can convert pressure brought by liquid into elastic potential energy through elastic deformation to be stored, after oil passes through a gap, the pressure brought by the oil disappears, and at this time, the elastic potential energy is converted into an acting force to push the block structure 20 away along a direction away from the eccentric wheel body 10, so as to ensure that the block structure 20 and the eccentric wheel body 10 can support the piston ring 40, avoid a gap from occurring between the piston ring 40 and the cylinder 50, and ensure airtightness between the piston ring and the cylinder. When the condition that has fluid to exist, the clearance can be filled up to fluid, makes the gas tightness up to standard, can not influence the refrigeration effect. The cylinder 50 further comprises a sliding vane structure 51 and fluid holes 52, specifically, the sliding vane structure 51 is arranged between the two fluid holes 52, and the sliding vane structure 51 and the piston ring 40 divide the interior of the cylinder 50 into two parts of space for facilitating the compression and directional discharge of gas.

As shown in fig. 2 to fig. 5, in the technical solution of the present embodiment, a first matching portion 11 is disposed on a side of the eccentric wheel body 10 close to the block structure 20, a second matching portion 21 is disposed on a side of the block structure 20 close to the eccentric wheel body 10, and the first matching portion 11 and the second matching portion 21 can be attached to each other. The first matching part 11 and the second matching part 21 can be mutually attached, the size of the gap can be controlled by the arrangement, and the structure is more compact. When first cooperation portion 11 and second cooperation portion 21 laminating, there is not the clearance between the two, can avoid fluid to go out the entering from the gap like this to influence the whole cooperation of first cooperation portion 11 and second cooperation portion 21.

As shown in fig. 2 to 5, in the technical solution of the present embodiment, the first matching portion 11 and the second matching portion 21 are both planar, and the first matching portion 11 and the second matching portion 21 are disposed in parallel. The arrangement is more convenient to process, the requirement on assembly is reduced, and the processing efficiency can be improved. It should be noted that, the block structure 20 is detachably connected with the eccentric wheel body 10, and the detachable connection can solve the problem of accuracy caused by a long shaft body 60 in the actual machining process of the crankshaft eccentric wheel assembly, and after the basic size of the eccentric wheel body 10 is obtained through rough machining, the specific size of the block structure 20 is adjusted to match the eccentric wheel body 10, so that the machining and the manufacturing are facilitated, and the machining efficiency is improved.

As shown in fig. 3 and 5, in the technical solution of the present embodiment, the buffering structure 30 further includes an adjusting screw 32, the first matching portion 11 is provided with a threaded hole 111, one side of the block structure 20 away from the eccentric wheel body 10 is provided with a counter bore 22, the counter bore 22 passes through the second matching portion 21, the adjusting screw 32 passes through the counter bore 22 and is in threaded connection with the threaded hole 111, and a sum of a length of the counter bore 22 and a length of the threaded hole 111 is smaller than a length of the adjusting screw 32. Adjusting screw 32's setting can restrict the position of block structure 20 on the one hand, avoids block structure 20 directly to drop from eccentric wheel body 10, and on the other hand can play the guide effect when block structure 20 slides relative eccentric wheel body 10, avoids appearing the drunkenness or sideslipping, leads to the condition of going wrong with piston ring 40's cooperation.

As shown in fig. 3 and fig. 5, in the technical solution of the present embodiment, the buffering structure 30 further includes a spring 31, the first matching portion 11 is provided with a first annular groove 112, the first annular groove 112 is disposed around the threaded hole 111, the second matching portion 21 is provided with a second annular groove 211, the second annular groove 211 is disposed around the counter bore 22, the spring 31 is sleeved outside the adjusting screw 32, a first end of the spring 31 is disposed in the first annular groove 112, and a second end of the spring 31 is disposed in the second annular groove 211. The setting of spring 31 is when normal condition promptly, avoids block structure 20 to be close to eccentric wheel body 10 to realize that block structure 20 and eccentric wheel body 10 strut in piston ring 40, when having fluid pressure, stores elastic potential energy through self compression again, offsets fluid pressure protection bent axle eccentric wheel assembly, and when fluid pressure disappears, pushes away the block structure again and keeps realizing that block structure 20 and eccentric wheel body 10 strut in piston ring 40. Effectively avoiding the aging of the crankshaft eccentric wheel component and prolonging the service life. The first annular groove 112 and the second annular groove 211 are arranged to limit the spring in the annular groove, so that on one hand, the attachment of the first matching part 11 and the second matching part 21 can not be affected, on the other hand, the annular groove can limit the spring 31 not to move along the circumferential direction, and the spring 31 does not need to be fixedly connected with the first matching part 11 or the second matching part 21, so that the assembly sequence is reduced.

It should be noted that, in the technical solution of the present embodiment, the number of the buffer structures 30 is plural, and due to the arrangement of the counter bores 22 and the adjusting screws 32, the degree of freedom of the block structure 20 along the circumferential direction of the adjusting screws 32 cannot be limited, the state of the block structure 20 cannot be ensured to be fixed, and the rotation of the block structure can be limited by arranging the plural buffer structures 30. The degree of freedom of the block structure 20 can also be limited by the matching relationship between the first matching portion 11 and the second matching portion 21, for example, the block structure 20 can be limited by fitting in a snap-fit manner or matching a protrusion and a groove. The first annular groove 112 is disposed around the threaded hole 111, and the second annular groove 211 is disposed around the counter bore 22, which are disposed for the adjusting screw 32 to pass through the spring 31, so that the arrangement structure is more compact, and at the same time, the spring 31 is further ensured not to fall off from the annular groove, and the function of the buffer structure 30 is ensured.

As shown in fig. 2 to fig. 5, in the technical solution of this embodiment, the eccentric wheel body 10 includes a first shaft segment 12, a first matching portion 11 is disposed on the first shaft segment 12, a circumferential outer side of the first shaft segment 12, which is far away from the first matching portion 11, is an arc-shaped arrangement, the block structure 20 includes a first table-shaped segment 23, a second matching portion 21 is disposed on the first table-shaped segment 23, one side of the first table-shaped segment 23, which is far away from the second matching portion 21, is an arc-shaped arrangement, and when the first matching portion 11 and the second matching portion 21 are attached to each other, the first shaft segment 12 and the first table-shaped segment 23 are combined into a cylinder. The inner wall of the piston ring 40 is circular and the cylinder can be fully received within the piston ring with a wider contact surface to further prevent damage. Meanwhile, the piston ring 40 is in clearance fit with the cylinder, and under the action of the buffer structure 30, the block structure 20 abuts against the eccentric wheel body 10 and the inner wall of the piston ring 40, so that the existence of a clearance is ensured, and the clearance is reduced to participate in the fit when oil is pressed. Can play a role in slowing down the oil hydraulic pressure to a certain extent.

As shown in fig. 2 to 5, in the technical solution of this embodiment, the block structure 20 further includes a second table-shaped section 24, the second table-shaped section 24 is fixedly connected to a table top of the first table-shaped section 23, the eccentric wheel body 10 further includes a second shaft section 13, the second shaft section 13 is fixedly connected to the first shaft section 12, the second shaft section 13 and the second table-shaped section 24 can be attached to each other, when the first matching portion 11 is attached to the second matching portion 21, the second shaft section 13 and the second table-shaped section 24 are connected to form a whole, and the whole cross section is completely accommodated in the cross section of the cylinder. The second shaft section 13 and the second table-shaped section 24 are arranged to facilitate clamping during machining, the formed integral cross section can be completely accommodated in the cross section of the cylinder, on one hand, tool retracting during machining can be facilitated, on the other hand, the second shaft section 13 and the second table-shaped section 24 are attached during machining, positioning between the first matching portion 11 and the second matching portion 21 can be achieved, and machining accuracy of the first shaft section 12 and the first table-shaped section 23 is guaranteed. Specifically, the eccentric wheel body 10 and the block structure 20 are machined by first machining the first matching portion 11 and the second matching portion 21, after the first matching portion 11 and the second matching portion 21 are attached to each other, drilling the threaded hole 111 and the counter bore 22, tightly combining the eccentric wheel body 10 and the block structure 20 through screws, and then machining the periphery of the eccentric wheel body 10 and the block structure 20.

As shown in fig. 2 to 5, in the technical solution of the present embodiment, the block structure 20 further includes a buffer through hole 25, the buffer through hole 25 is disposed in the first shaft segment 12, and the buffer through hole 25 penetrates through the first shaft segment 12 along the thickness direction of the eccentric wheel body 10. The buffer through hole 25 can be elastically deformed to a certain extent, and the force action of the liquid pressure on the crankshaft eccentric wheel assembly is further slowed down.

As shown in fig. 2 to 5, in the solution of the present embodiment, the buffer through hole 25 includes a first arc-shaped segment 251 and a second arc-shaped segment 252, two ends of the first arc-shaped segment 251 are both connected to the second arc-shaped segment 252, the opening directions of the first arc-shaped segment 251 and the second arc-shaped segment 252 are the same, and the arc length of the first arc-shaped segment 251 is greater than the arc length of the second arc-shaped segment 252. Specifically, the buffer through hole 25 is a crescent through hole, the first arc-shaped section 251 and the second arc-shaped section 252 are both arc-shaped sections, wherein the radius of the first arc-shaped section 251 is 16.5mm to 17.5mm, the angle of the first arc-shaped section 251 is 83.6 °, the radius of the second arc-shaped section 252 is 19.5mm to 20mm, the corresponding angle of the second arc-shaped section 252 is 64.9 °, the distance between the circle center of the first arc-shaped section 251 and the circle center of the second arc-shaped section 252 is 5mm, the circle center of the first arc-shaped section 251, the circle center of the second arc-shaped section 252 and the axial center line of the eccentric wheel body 10 are on the same straight line, and the circle center of the second arc-shaped section 252 is 5mm away from the normal direction of the axial center line of the eccentric wheel body 10. The aforesaid setting is the concrete structure of buffering through-hole 25, sets up through centre of a circle and different radial cooperation, makes the buffering through-hole have curved buffering face, when spring 31 thoroughly died, can also carry out a small amount of elastic deformation, can absorb the pressure that liquid brought on the one hand, reduces the destroyed possibility of bent axle, and on the other hand buffering through-hole 25 avoids block structure 20 directly to be squashed for certain extrusion space of block structure 20.

It should be noted that, in the technical scheme of this embodiment, two fillets with a radius of 0.5mm are further disposed at the connection between the first arc-shaped segment 251 and the second arc-shaped segment 252, the fillet is convenient to process and can be set as a groove for retracting the cutter, and the setting of the fillet can increase the strength of the buffer through hole 25 and can bear a larger liquid pressure. The position of the center of the first arc-shaped segment 251 can be set relative to the axial center line of the eccentric wheel body 10, specifically, when the center of the first arc-shaped segment 251 is set between the axial center line and the block structure 20, the thickness of the radial distance between the first arc-shaped segment and the outer wall surface of the block structure 20 is thinnest, and the greater the thickness of the buffering surface is as the angles of the two sides of the outer arc become larger.

As shown in fig. 2 to 5, in the technical solution of the present embodiment, the crankshaft eccentric wheel assembly further includes a shaft body 60, a plurality of eccentric wheel bodies 10 are provided, and the plurality of eccentric wheel bodies 10 and the shaft body 60 are an integrated structure. The eccentric wheel bodies 10 correspond to the cylinders, and can meet different requirements.

In another embodiment, in order to realize flexible buffering of the eccentric wheel assembly of the crankshaft, an axle body 60, an adjusting screw 32, a spring 31, an eccentric wheel body 10 and a block structure 20 are arranged. In order to ensure the lubrication and heat dissipation of all parts of the pump body of the compressor, a certain amount of oil is injected into the compressor. During the operation of the compressor, oil in the shell can be conveyed to gaps of all parts, and lubrication is guaranteed. In the process of carrying out a reliability test (vacuum limit) on the compressor, because of the special test, the suction valve is closed, no suction is carried out in the pump body, the piston ring 40 does not stop rotating, the limit vacuum is formed in the pump body, and the high pressure in the shell can not be circulated and is always kept high. Lubricating oil permeates into the cylinder 50 from high pressure to low pressure through the gap to cause the piston ring 40 to rotate to press oil in the cylinder 50, in the oil pressing process, the piston ring 40 is subjected to abnormal radial pressure to cause the piston ring 40 to displace in the radial inward direction, the piston ring 40 extrudes the block structure 20, the spring 31 between the block structure 20 and the shaft body 60 performs compression motion due to the abnormal pressure, the piston ring 40 and the block structure 20 perform radial displacement to increase the radial gap between the piston ring 40 and the cylinder 50, and therefore the oil between the cylinder 50 and the piston ring 40 flows away from the gap; when the oil flows away, the spring 31 recovers an elastic state, the support block structure 20 moves in the radial outward direction, and the piston ring 40 is driven to move in the radial outward direction, so that the outer wall surface of the piston ring 40 is tightly attached to the inner wall of the cylinder 50, and the performance of the compressor is improved.

The block structure 20 is semicircular in cross section, the semicircular block structure is provided with the buffering through hole 25, the buffering through hole 25 is crescent in shape, the second buffering mechanism serves as a second buffering mechanism, when the spring 31 flexible buffering mechanism is forced to reach the maximum limit gap by pressure, the second buffering mechanism elastically deforms, the semicircular arc surface on the block structure 20 flexibly deforms, the gap between the piston ring 40 and the inner wall of the air cylinder 50 is enlarged, and pressure oil is avoided. A counter bore 22 is provided in the radial direction of the block structure 20 for connection of the first fitting portion 11 and the second fitting portion 21; the plane of the eccentric wheel body 10 is provided with at least 4 threaded holes 111 and a first annular groove 112, the plane of the side edge of the block structure 20 is provided with at least 4 counter bores and a second annular groove 211, the plane of the eccentric wheel body 10 corresponds to the threaded holes 111 of the plane of the side edge of the block structure 20, a spring 31 is arranged in the middle of the eccentric wheel body for flexible buffering, and an adjusting screw 32 is used for limiting and fixing to enable the eccentric wheel body 10 and the block structure 20 to keep a 0.05mm gap for displacement in the radial direction. The threaded holes 111 are uniformly formed in the first matching part 11 to improve the connection strength between the eccentric wheel body 10 and the block structure 20; a first annular groove 112 is arranged around the outer side of the threaded hole 111 and corresponds to the counter bore 22 through the threaded hole 111; the spring 31 penetrates through the adjusting screw 32 and is positioned between the eccentric wheel body 10 and the block body structure 20, one end of the spring 31 is connected with the first annular groove 112, the other end of the spring 31 is connected with the second annular groove 211, and the block body structure 20 is tightly locked on the eccentric wheel body 10 through the adjusting screw 32; when the eccentric wheel body 10 is subjected to a force in the radial inner direction, the block structure 20 can overcome the force of the spring 31 and work along the adjusting screw 32 and deflect in the radial inner direction.

The eccentric wheel body 10 and the block structure 20 are in tightening connection through the adjusting screw 32, the eccentric wheel body 10 and the block structure 20 have the functions of being convenient to disassemble, assemble and replace, the eccentric wheel body 10 can be made of other wear-resistant metal materials and light materials, so that the local position of the crankshaft eccentric wheel assembly and the piston ring 40 have high wear resistance and high strength, the service life of the crankshaft eccentric wheel assembly is prolonged, and the cost is saved; the centrifugal force caused by the rotation of the crankshaft eccentric wheel component can be reduced by reducing the mass of the eccentric wheel body 10, and the stable operation of the compressor is ensured; crankshaft eccentric wheel subassembly is as rotary part, the interior circle contact of its eccentric wheel body 10 and block structure 20 and piston ring 40, when receiving radial internal direction's extrusion force, piston ring 40 and eccentric wheel body 10 and block structure 20 take place the friction, use removable eccentric wheel body 10 and the high wear-resisting material of block structure 20, can improve the partial wear of crankshaft eccentric wheel subassembly, effectively avoid between piston ring 40 and eccentric wheel body 10 and the block structure 20 because the friction failure problem. The connection block structure 20 on the eccentric wheel body 10 has various combinations, such as bolt connection, key groove connection and the like; the buffer mechanism of the block structure 20 has various forms, namely combination of crescent and multi-cylindrical holes; in this embodiment, according to the pressure of the oil in different degrees encountered in the test process, the buffering structure 30 and the buffering through hole 25 can be used for meeting different pressure requirements, so that the oil in the cylinder 50 can be effectively prevented from being pressed by the piston ring 40, the torsional deformation of the crankshaft eccentric wheel assembly can be improved, and the reliability of the crankshaft eccentric wheel assembly can be improved.

The above is provided as a detachable crankshaft eccentric wheel assembly with a buffering structure 30. The crankshaft eccentric wheel assembly is formed by combining an eccentric wheel body 10 and a detachable block structure 20, and by adopting the eccentric wheel body 10 with the buffer structure 30, when oil is pressed in the air cylinder 50, the piston ring 40 can realize flexible rebound, which is beneficial to improving the abrasion of the crankshaft eccentric wheel assembly caused by the oil pressing; by adopting the detachable block structure 20, the processing difficulty of the eccentric wheel component of the integral crankshaft is reduced during processing, and the processing difficulty of the buffer structure 30 of the eccentric wheel body 10 is also reduced; the detachable block structure 20 has the advantage of changeable material properties, replacing the material of the block structure 20 with good wear resistance.

In a second aspect, as shown in fig. 6 to 7, in the technical solution of the present embodiment, there is provided a compressor including the above-mentioned crankshaft eccentric wheel assembly. Specifically, the compressor has the pump body including the bent axle eccentric wheel subassembly, and the pump body has still included baffle subassembly 70, coupling assembling 80 and amortization subassembly 90, and baffle subassembly 70 sets up between a plurality of cylinders 50, and coupling assembling 80 sets up the rotatable continuous with bent axle eccentric wheel subassembly in the one end of cylinder 50, and amortization subassembly 90 is located outside the bent axle eccentric wheel subassembly, and amortization subassembly 90 links to each other with coupling assembling 80. The diaphragm assembly 70 includes a first diaphragm 71 and a second diaphragm 72 stacked to separate adjacent cylinders. The connecting assembly comprises a first connecting piece 81 and a second connecting piece 82, wherein the first connecting piece 81 is provided with an upper flange, the second connecting piece 82 is provided with a lower flange, and the connecting assembly 80 is matched with the shaft body 60 to form a shell of the pump body. The silencing assembly 90 is used for silencing when the pump body works. It should be noted that, the compressor is specifically a rotor compressor, and such a compressor can avoid the condition of pressing oil, increase the service life of the compressor, and facilitate the disassembly, assembly and maintenance, and at the same time, can improve and prolong the service life of the crankshaft eccentric wheel assembly, ensure the smooth operation of the rotor compressor, and enhance the reliability of the compressor

In a third aspect, in the technical solution of the present embodiment (not shown in the figures), there is provided a gas regulating device, the gas regulating device comprising the above-mentioned crank eccentric assembly, or the gas regulating device comprising the above-mentioned pump body, or the gas regulating device comprising the above-mentioned compressor. The service life of the gas regulating equipment can be prolonged while the refrigeration and heat exchange effects are ensured.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crankshaft eccentric wheel assembly, comprising:

an eccentric wheel body (10);

a block structure (20), wherein the block structure (20) is connected with the eccentric wheel body (10) in a sliding way;

the eccentric wheel body (10) and the block body structure (20) are respectively connected with the buffer structure (30);

a piston ring (40), the inner wall of a cylinder (50) is in contact with the outer wall of the piston ring (40), and the eccentric wheel body (10) and the block structure (20) are both in contact with the inner wall of the piston ring (40).

2. A crankshaft eccentric wheel assembly according to claim 1, characterized in that the side of the eccentric wheel body (10) close to the block structure (20) has a first fitting part (11), the side of the block structure (20) close to the eccentric wheel body (10) has a second fitting part (21), and the first fitting part (11) and the second fitting part (21) can be fitted to each other.

3. A crankshaft eccentric wheel assembly according to claim 2, characterized in that the first fitting part (11) and the second fitting part (21) are both plane surfaces, the first fitting part (11) and the second fitting part (21) being arranged parallel to each other.

4. A crankshaft eccentric wheel assembly according to claim 3, characterized in that the buffer structure (30) further comprises an adjusting screw (32), the first fitting portion (11) is provided with a threaded hole (111), one side of the block structure (20) far away from the eccentric wheel body (10) is provided with a counter bore (22), the counter bore (22) penetrates through the second fitting portion (21), the adjusting screw (32) penetrates through the counter bore (22) to be in threaded connection with the threaded hole (111), and the sum of the length of the counter bore (22) and the length of the threaded hole (111) is smaller than the length of the adjusting screw (32).

5. The crankshaft eccentric wheel assembly according to claim 4, characterized in that the buffering structure (30) further comprises a spring (31), the first fitting portion (11) is provided with a first annular groove (112), the first annular groove (112) is disposed around the threaded hole (111), the second fitting portion (21) is provided with a second annular groove (211), the second annular groove (211) is disposed around the counter bore (22), the spring (31) is sleeved outside the circumference of the adjusting screw (32), a first end of the spring (31) is disposed in the first annular groove (112), and a second end of the spring (31) is disposed in the second annular groove (211).

6. The crankshaft eccentric wheel assembly according to claim 2, characterized in that the eccentric wheel body (10) comprises a first shaft section (12), the first matching portion (11) is arranged on the first shaft section (12), the circumference outer side of the first shaft section (12) far away from the first matching portion (11) is arranged in an arc shape, the block structure (20) comprises a first platform section (23), the second matching portion (21) is arranged on the first platform section (23), the side of the first platform section (23) far away from the second matching portion (21) is arranged in an arc shape, and when the first matching portion (11) is jointed with the second matching portion (21), the first shaft section (12) and the first platform section (23) are combined into a cylinder.

7. The crankshaft eccentric wheel assembly according to claim 6, characterized in that said block structure (20) further comprises a second stepped section (24), said second stepped section (24) is fixedly connected with the table surface of said first stepped section (23), said eccentric wheel body (10) further comprises a second shaft section (13), said second shaft section (13) is fixedly connected with said first shaft section (12), said second shaft section (13) and said second stepped section (24) can be attached to each other, when said first fitting portion (11) is attached to said second fitting portion (21), said second shaft section (13) and said second stepped section (24) are connected into a whole, and the cross section of said whole is completely contained in the cross section of said cylinder.

8. A crankshaft eccentric wheel assembly according to claim 6, characterized in that the block structure (20) further comprises a buffer through hole (25), the buffer through hole (25) being provided in the first shaft section (12), the buffer through hole (25) penetrating the first shaft section (12) in the thickness direction of the eccentric body (10).

9. The crankshaft eccentric wheel assembly according to claim 8, characterized in that the buffer through hole (25) comprises a first arc-shaped section (251) and a second arc-shaped section (252), both ends of the first arc-shaped section (251) are connected with the second arc-shaped section (252), the opening directions of the first arc-shaped section (251) and the second arc-shaped section (252) are the same, and the arc length of the first arc-shaped section (251) is larger than that of the second arc-shaped section (252).

10. A crankshaft eccentric wheel assembly according to any of claims 1 to 9, characterized in that it further comprises a shaft body (60), said eccentric bodies (10) being in plurality, a plurality of said eccentric bodies (10) being in one piece construction with said shaft body (60).

11. A compressor, characterized in that it comprises a crankshaft eccentric wheel assembly according to any one of claims 1 to 10.

12. A gas conditioning plant, characterized in that it comprises a compressor according to claim 11.