CN116928102A - Gap adjusting device and compressor - Google Patents

Abstract

The application provides a clearance adjusting device and a compressor. The gap adjustment device includes: a housing; the separation plate is arranged in the shell and is in circumferential sealing connection with the inner side wall of the shell, so that a region for accommodating oil-gas mixture is formed in the upper space of the separation plate; the frame component is arranged in the shell and positioned below the partition plate, an accommodating space is formed between the partition plate and the frame component, the partition plate is provided with a communication hole for communicating the upper space and the accommodating space, and at least one part of one side of the frame component, which is close to the partition plate, can move along the axial direction of the frame component; the connecting pipeline, the one end and the intercommunicating pore intercommunication of connecting pipeline, the inside of frame subassembly has the connecting channel, and the one end and the other end intercommunication of connecting pipeline of connecting channel, the other end of connecting channel is towards the frame subassembly motion part and for its drive power that provides, intercommunicating pore, connecting pipeline and connecting channel constitute the backward flow route. The application solves the problem of poor usability of the compressor in the prior art.

Description

Gap adjusting device and compressor

Technical Field

The application relates to the field of compressor equipment, in particular to a clearance adjusting device and a compressor.

Background

The common vortex compressor mainly comprises a movable vortex disc, a fixed vortex disc, a crankshaft, a base, an anti-rotation mechanism, a motor and the like, wherein molded lines of the movable vortex disc and the fixed vortex disc are spiral, the movable vortex disc is eccentric relative to the fixed vortex disc and is oppositely arranged with a phase difference of 180 degrees, in theory, the movable vortex disc and the fixed vortex disc axially contact on a plurality of straight lines, the end parts of molded lines of the vortex bodies are contacted with the bottoms of the opposite vortex bodies, and a series of crescent spaces, namely primitive volumes, are formed between the movable vortex bodies and the movable vortex bodies. When the movable vortex disk takes the center of the fixed vortex disk as the rotation center and does rotation translation without autorotation with a certain rotation radius, the crescent space of the outer ring can continuously move to the center, so that the volume of the primitive is continuously reduced and the pressure is continuously increased until the primitive is communicated with the central exhaust hole, and the high-pressure gas is discharged out of the compressor.

When the high-pressure gas is discharged out of the compressor, the refrigerant containing a certain amount of oil is compressed by the dynamic and static discs, enters a high-pressure discharge cavity formed by the upper cover assembly and the partition plate, and is discharged through the exhaust pipe. Because the refrigerant fills the whole exhaust cavity, lubricating oil in the refrigerant adheres to the inner wall of the upper cover and the partition plate, and finally a certain amount of relatively more refrigerating oil can remain in the exhaust cavity to form an exhaust high-pressure oil cavity on the partition plate, and the refrigerating oil in the exhaust high-pressure oil cavity on the partition plate can be increased along with the accumulation of time, so that the quantity of the internal parameters of the compressor and the quantity of circulating lubricating oil are reduced, and the performance of the compressor is affected.

For maximum efficiency, it is important that the scroll-type linear tip of the fixed scroll and the end plate of the orbiting scroll are sealingly joined to minimize leakage therebetween. In the prior art, a sealing device at the top end of a vortex type wire is generally used for solving the problems, the device is high in cost, the vortex body is difficult to process, the vortex disc is easy to wear, and the reliability is poor.

Therefore, the prior art has a problem of poor usability of the compressor.

Disclosure of Invention

The application mainly aims to provide a clearance adjusting device and a compressor, so as to solve the problem of poor usability of the compressor in the prior art.

In order to achieve the above object, according to one aspect of the present application, there is provided a gap adjusting device comprising: a housing; the separation plate is arranged in the shell and is in circumferential sealing connection with the inner side wall of the shell, so that a region for accommodating oil-gas mixture is formed in the upper space of the separation plate; the frame component is arranged in the shell and positioned below the partition plate, an accommodating space is formed between the partition plate and the frame component, the partition plate is provided with a communication hole for communicating the upper space and the accommodating space, and at least one part of one side of the frame component, which is close to the partition plate, can move along the axial direction of the frame component; the connecting pipeline, the one end and the intercommunicating pore intercommunication of connecting pipeline, the inside of frame subassembly has the connecting channel, and the one end and the other end intercommunication of connecting pipeline of connecting channel, the other end of connecting channel is towards the frame subassembly motion part and for its drive power that provides, intercommunicating pore, connecting pipeline and connecting channel constitute the backward flow route.

Further, the gap adjusting device further includes a pressure adjusting element that is disposed on the return path and adjusts a pressure of the return path so that a pressure of the pressure adjusting element near an inlet side of the return path is greater than a pressure of an outlet side of the return path.

Further, the pressure regulating element is arranged at one end of the connecting pipeline connected with the connecting channel or is arranged inside the connecting channel.

Further, the pressure regulating element comprises a pressure regulating rod, the diameter of the pressure regulating rod near the inlet side of the return path being larger than the diameter of the outlet side of the return path.

Further, the pressure regulating lever includes at least two connecting sections that set up along the axial, and the diameter of two connecting sections is different, and the diameter of the connecting section that is close to the entry side of backward flow route is greater than the diameter of the connecting section of the exit side of backward flow route, and the one end of two connecting sections interconnect forms the step face.

Further, the connecting section of the pressure regulating lever near the outlet side of the return path has a threaded section.

Further, the pressure regulating element comprises a pressure regulating rod, and the circumferential outer side wall of the pressure regulating rod is provided with a thread section.

Further, a first accommodating groove is formed in one side, away from the rack assembly, of the partition plate, and the communication hole is communicated with the first accommodating groove.

Further, the rack assembly includes: the frame seat is provided with a connecting channel; the machine frame plate is arranged on one side of the machine frame seat, which is close to the partition plate, and can move along the axial direction of the machine frame seat, and one end of the connecting channel, which is far away from the connecting pipeline, faces the machine frame plate.

Further, a second accommodating groove is formed in one side of the frame base facing the frame plate or one side of the frame plate facing the frame base, and the connecting channel is communicated with the second accommodating groove.

Further, the gap adjusting device further includes a seal member provided at a circumferential inner side wall of the second accommodation groove.

Further, one side of the frame base facing the partition plate is provided with a containing cavity, and the frame plate is movably arranged in the containing cavity.

Further, the connecting channel comprises a first channel section extending along the axial direction of the frame seat, a second channel section extending along the radial direction of the frame seat and a third channel section extending along the axial direction of the frame seat, wherein the length of the first channel section is greater than that of the third channel section; and/or the first channel section and the third channel section are both positioned on the upper side of the second channel section; and/or one end of the second channel section penetrates to the outer peripheral surface of the frame seat; and/or the distance between the first channel section and the third channel section in the radial direction of the frame base is smaller than the length of the second channel section.

Further, the partition plate is further provided with an air vent, and the gap adjusting device further comprises a check valve arranged at one end of the air vent, which is far away from the rack assembly.

According to another aspect of the present application, there is provided a compressor including the above gap adjusting device.

Further, the partition plate, the frame assembly and the connecting pipeline of the gap adjusting device are all arranged in the area between the air suction pipe and the air discharge pipe of the compressor, the partition plate is close to the air discharge pipe relative to the frame assembly, and the frame assembly is close to the air suction pipe relative to the partition plate.

Further, the compressor further includes: the movable vortex disc and the fixed vortex disc are oppositely arranged, the movable vortex disc and the fixed vortex disc are arranged in the accommodating space of the gap adjusting device, the fixed vortex disc is connected with the partition plate of the gap adjusting device, and the movable vortex disc is abutted on the frame component of the gap adjusting device; and the driving shaft of the driving assembly penetrates through the frame assembly and is in driving connection with the movable vortex disk.

Further, the compressor further comprises a cross slip ring arranged between the frame assembly and the movable scroll and connected with the movable scroll.

By applying the technical scheme of the application, the gap adjusting device comprises a shell, a partition plate, a frame assembly and a connecting pipeline. The partition plate is arranged in the shell and is in circumferential sealing connection with the inner side wall of the shell, so that an area for accommodating oil-gas mixture is formed in the upper space of the partition plate; the frame component is arranged in the shell and is positioned below the partition plate, an accommodating space is formed between the partition plate and the frame component, the partition plate is provided with a communication hole for communicating the upper space and the accommodating space, and at least one part of one side of the frame component, which is close to the partition plate, can move along the axial direction of the frame component; one end of the connecting pipeline is communicated with the communicating hole, a connecting channel is arranged in the frame assembly, one end of the connecting channel is communicated with the other end of the connecting pipeline, the other end of the connecting channel faces the moving part of the frame assembly and provides driving force for the frame assembly, and the communicating hole, the connecting pipeline and the connecting channel form a backflow path.

When the gap adjusting device of the present application is used, the gap adjusting device needs to be installed inside the compressor, and the shell of the gap adjusting device may actually be a part of the shell of the compressor, and the region formed by the upper space of the partition plate for accommodating the oil-gas mixture in the present application is the high pressure chamber part of the compressor, and the region where the oil-gas mixture in this region actually means that there is both lubricating oil and gas in this space, that is, the high pressure oil chamber described in the prior art. In the application, the refrigerating oil in the high-pressure oil cavity can return to the compressor through the return path and participate in circulating lubrication, so that the service performance of the compressor is ensured. Meanwhile, as the returned frozen oil and gas can drive part of the structure of the frame component to move along the axial direction, the movable vortex disc of the compressor can be axially adjusted, and further the axial clearance between the fixed vortex disc and the movable vortex disc of the compressor can be ensured to be adaptively adjusted along with working conditions so as to achieve axial force balance, and sealing force is adjusted, so that the compressor can keep extremely low friction loss and can not cross air when working at any working condition point. While also avoiding compressor failure when impurities or liquid are sucked into the compressor. Therefore, the clearance adjusting device effectively solves the problem of poor usability of the compressor in the prior art.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

fig. 1 shows a schematic structure of a compressor according to an embodiment of the present application;

FIG. 2 is a schematic view showing the structure of a partition plate and a connecting pipe of a gap adjusting apparatus according to an embodiment of the present application;

FIG. 3 is a schematic view showing the structure of a frame assembly of a gap adjusting apparatus according to an embodiment of the present application;

FIG. 4 is a schematic view showing the structure of a frame assembly of a gap adjusting apparatus according to another embodiment of the present application;

FIG. 5 is a schematic view showing the structure of a pressure regulating lever of a gap adjusting device according to an embodiment of the present application;

FIG. 6 is a schematic view showing the structure of a pressure regulating lever of a gap adjusting device according to another embodiment of the present application;

fig. 7 is a schematic structural view showing a pressure regulating lever of a gap adjusting device according to still another embodiment of the present application.

Wherein the above figures include the following reference numerals:

10. a housing; 11. an intermediate housing; 12. a lower housing; 13. a lower cover; 20. a partition plate; 21. a communication hole; 22. a first accommodation groove; 23. an air guide hole; 30. a frame assembly; 31. a connection channel; 311. a first channel segment; 312. a second channel segment; 313. a third channel segment; 32. a frame base; 321. a receiving chamber; 33. a frame plate; 34. a second accommodation groove; 40. a connecting pipeline; 50. a voltage regulating element; 51. a pressure regulating rod; 511. a connection section; 512. a threaded section; 60. a seal; 70. a check valve; 80. an air suction pipe; 90. an exhaust pipe; 100. a movable scroll; 200. a fixed scroll; 300. a drive assembly; 301. a rotor; 302. a stator; 303. a crankshaft; 304. a stator fixing ring; 400. a cross slip ring; 500. a lower bracket; 600. a lower bracket bearing; 700. and a lower support ring.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present application, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present application.

In order to solve the problem of poor usability of a compressor in the prior art, the application provides a clearance adjusting device and the compressor.

As shown in fig. 2 to 7, the gap adjusting device in the present application includes a housing 10, a partition plate 20, a frame assembly 30, and a connection pipe 40. The partition plate 20 is disposed in the casing 10 and is connected with the inner sidewall of the casing 10 in a circumferential sealing manner such that an upper space of the partition plate 20 is formed with a region for accommodating the oil-gas mixture; the frame assembly 30 is arranged in the shell 10 and below the partition plate 20, a containing space is arranged between the partition plate 20 and the frame assembly 30, the partition plate 20 is provided with a communication hole 21 for communicating the upper space and the containing space, and at least one part of one side of the frame assembly 30, which is close to the partition plate 20, can move along the axial direction of the frame assembly 30; one end of the connection pipe 40 communicates with the communication hole 21, the inside of the housing assembly 30 has a connection passage 31, one end of the connection passage 31 communicates with the other end of the connection pipe 40, the other end of the connection passage 31 faces the moving portion of the housing assembly 30 and provides a driving force thereto, and the communication hole 21, the connection pipe 40 and the connection passage 31 constitute a return flow path.

When the gap adjusting device of the present application is used, the gap adjusting device needs to be installed inside the compressor, and the housing 10 of the gap adjusting device may actually be a part of the housing 10 of the compressor, and the region formed by the upper space of the partition plate 20 for accommodating the oil-gas mixture in the present application is the high pressure chamber portion of the compressor, and the region where the oil-gas mixture herein actually means that there is both lubricating oil and gas in the space, i.e., the high pressure oil chamber described in the prior art. In the application, the refrigerating oil in the high-pressure oil cavity can return to the compressor through the return path and participate in circulating lubrication, so that the service performance of the compressor is ensured. Meanwhile, as the returned frozen oil and gas can drive part of the structure of the frame assembly 30 to move along the axial direction, the movable vortex plate 100 of the compressor can be axially adjusted, and further the axial clearance between the fixed vortex plate 200 and the movable vortex plate 100 of the compressor can be ensured to be adaptively adjusted along with working conditions so as to achieve axial force balance, and sealing force is adjusted, so that the compressor can keep extremely low friction loss and cannot be in gas leakage when working at any working condition point. While also avoiding compressor failure when impurities or liquid are sucked into the compressor. Therefore, the clearance adjusting device effectively solves the problem of poor usability of the compressor in the prior art.

Also, it is also added that when the gap adjusting apparatus of the present application is applied to a compressor, the pressure of the side of the partition plate 20 away from the frame assembly 30 is higher than the pressure of the side of the partition plate 20 close to the frame assembly 30, and the pressure at the outlet of the return path is higher than the pressure of the side of the partition plate 20 close to the frame assembly 30, thereby ensuring that the fluid flowing out of the return path can provide driving force to the moving part of the frame assembly 30.

Specifically, the gap adjusting device further includes a pressure adjusting member 50, the pressure adjusting member 50 being disposed on the return path and adjusting the pressure of the return path such that the pressure of the pressure adjusting member 50 near the inlet side of the return path is greater than the pressure of the outlet side of the return path. In the present application, by providing the pressure regulating element 50, the pressure of the fluid passing through the pressure regulating element 50 in the return flow path can be effectively reduced, and the pressure of the fluid entering the connecting passage 31 from the oil-gas mixing region can be reduced, thereby preventing the pressure in the connecting passage 31 from becoming excessive.

Alternatively, the pressure regulating member 50 is provided at an end of the connection pipe 40 connected to the connection passage 31 or the pressure regulating member 50 is provided inside the connection passage 31. In the present application, the pressure regulating element 50 may be disposed in the connection pipe 40 or the connection passage 31 according to actual use requirements.

Specifically, the pressure regulating member 50 includes a pressure regulating lever 51, and the diameter of the pressure regulating lever 51 near the inlet side of the return path is larger than the diameter of the outlet side of the return path. By this arrangement, the pressure regulating element 50 can be made to act as a pressure reducing function, so that it can be ensured that the pressure at the inlet of the return path is greater than the pressure at the outlet of the return path.

In the embodiment shown in fig. 5, the pressure regulating lever 51 includes at least two connection sections 511 disposed in the axial direction, the two connection sections 511 are different in diameter, the connection section 511 near the inlet side of the return path is larger in diameter than the connection section 511 at the outlet side of the return path, and one end of the two connection sections 511 connected to each other forms a stepped surface. By this arrangement, when the fluid flows in the return path, the fluid passes through the connecting section 511 having a large diameter, then passes through the stepped surface formed by the two connecting sections 511, and finally passes through the connecting section 511 having a small diameter, thereby realizing the pressure reducing effect through the pressure regulating lever 51.

In the embodiment shown in fig. 6, the connecting section 511 of the pressure regulating rod 51 near the outlet side of the return path has a threaded section 512.

In the embodiment shown in fig. 7, the pressure regulating element 50 comprises a pressure regulating rod 51, the circumferential outer side wall of the pressure regulating rod 51 having a threaded section 512. In both of the above embodiments, the fluid in the return path can be depressurized through the threaded section 512.

In the present application, the pressure regulating element 50 is capable of reducing the pressure of the fluid from P1 to P2 by using the flow resistance of the pressure fluid in the elongated tube with a changed sectional area, and the pressure P2 is optimally effective in the interval of 0.55P1< P2<0.70p1, and the axial gap of the orbiting scroll 100 and the fixed scroll 200 is adaptively driven and regulated by using the pressure P2 of the oil or the oil-gas mixture fluid.

Specifically, the partition plate 20 has a first receiving groove 22 at a side thereof remote from the frame assembly 30, and the communication hole 21 communicates with the first receiving groove 22. In the application, the high-pressure gas compressed by the compressor can realize the separation of the refrigerant and the frozen oil in the oil-gas mixing cavity, so that the separated frozen oil can enter a reflux path through the first accommodating groove 22 to realize reflux. Therefore, in the present application, by providing the first storage tank 22, the frozen oil can be collected more easily, and the recovery of the frozen oil can be accelerated.

In one embodiment of the present application, the frame assembly 30 includes a frame mount 32 and a frame plate 33. The frame base 32 has a connecting channel 31; the frame plate 33 is provided on a side of the frame base 32 near the partition plate 20 and is movable in the axial direction of the frame base 32, and an end of the connection passage 31 remote from the connection pipe 40 is directed toward the frame plate 33. That is, in the present embodiment, the frame plate 33 can move along the axial direction of the frame base 32 under the pressure of the fluid discharged from the backflow path, or in the present application, the frame plate 33 can float relative to the frame base 32, so that the adjustment of the axial gap between the movable scroll 100 and the fixed scroll 200 can be realized, and the cyclic utilization of the lubricating oil can be realized, so that the compressor can keep extremely low friction loss and no air leakage when working at any working point.

Alternatively, the side of the frame plate 33 facing the frame plate 32 or the side of the frame plate 33 facing the frame plate 32 has a second receiving groove 34, and the connection passage 31 communicates with the second receiving groove 34. By the arrangement, the stress of the frame plate 33 can be effectively ensured to be more uniform, so that the frame plate 33 can move along the preset direction, and the stability of the movement between the movable scroll 100 and the fixed scroll 200 is ensured.

Preferably, the gap adjusting device further includes a seal 60, the seal 60 being provided at a circumferential inner side wall of the second accommodation groove 34.

Preferably, the side of the frame base 32 facing the partition plate 20 has a receiving cavity 321, and the frame plate 33 is movably disposed in the receiving cavity 321. The arrangement can not only effectively reduce the space occupied by the frame assembly 30, but also play a limiting role on the movement of the frame plate 33 through the inner side wall of the accommodating cavity 321, thereby ensuring that the frame plate 33 can move along a preset direction.

Specifically, the connection passage 31 includes a first passage section 311 extending in the axial direction of the rack mount 32, a second passage section 312 extending in the radial direction of the rack mount 32, and a third passage section 313 extending in the axial direction of the rack mount 32, wherein the length of the first passage section 311 is greater than the length of the third passage section 313; the first channel section 311 and the third channel section 313 are both located on the upper side of the second channel section 312; one end of the second channel section 312 penetrates to the outer peripheral surface of the rack mount 32; and/or the distance between the first channel section 311 and the third channel section 313 in the radial direction of the frame mount 32 is smaller than the length of the second channel section 312. In the present embodiment, the pressure regulating member 50 is able to enter the inside of the second passage section 312 through the outer peripheral surface of the chassis base 32, and seals the communication place of the second passage section 312 and the outer surface of the chassis base 32. The end of the pressure regulating element 50 may thus be provided with a sealing section sealing the end of the second channel section 312 close to the outer surface of the frame base 32. Meanwhile, the connection passage 31 can be processed more conveniently by such arrangement. Also, in this embodiment the communication line may communicate with the first channel segment 311.

Optionally, the partition plate is further provided with an air vent hole 23, and the gap adjusting device further includes a check valve 70, the check valve 70 being provided at an end of the air vent hole 23 remote from the rack assembly 30. By this arrangement, the backflow of the fluid in the region where the oil and gas are mixed above the partition plate 20 can be effectively prevented through the gas guide hole 23, and thus the stable operation of the compressor can be ensured. In one embodiment of the application, the side of the divider plate remote from the housing assembly 30 has a circular boss and the circular boss has air holes 23.

Alternatively, the first accommodation groove 22 is an annular groove, and the first accommodation groove 22 is provided around the circumference of the communication hole 21.

Optionally, the second receiving groove 34 is an annular groove.

As shown in fig. 1, the compressor of the present application includes the above-described gap adjusting device. The partition plate 20, the frame unit 30, and the connecting pipe 40 of the gap adjusting device are provided in the region between the intake pipe 80 and the exhaust pipe 90 of the compressor, the partition plate 20 is positioned closer to the exhaust pipe 90 than the frame unit 30, and the frame unit 30 is positioned closer to the intake pipe 80 than the partition plate 20. Meanwhile, the compressor further includes: the movable vortex plate 100, the fixed vortex plate 200 and the driving assembly 300 are oppositely arranged, the movable vortex plate 100 and the fixed vortex plate 200 are arranged in the accommodating space of the gap adjusting device, the fixed vortex plate 200 is connected with the partition plate 20 of the gap adjusting device, and the movable vortex plate 100 is abutted on the frame assembly 30 of the gap adjusting device; the drive shaft of the drive assembly 300 passes through the housing assembly 30 and is drivingly connected to the orbiting scroll 100. The compressor of the present application includes, in addition to the above-described casing 10, an intermediate casing 11, a lower casing 12, and a lower cover 13 connected to the lower casing. Meanwhile, the driving assembly includes a rotor 301, a stator 302, a crankshaft 303, and a stator fixing ring 304. The lower end of the crankshaft 303 is connected to the lower bracket 500 via a lower bracket bearing 600. Meanwhile, the lower bracket 500 is connected with the lower case through the lower bracket support ring 700.

Preferably, the compressor further includes a cross slip ring 400, and the cross slip ring 400 is disposed between the frame assembly 30 and the orbiting scroll 100 and is coupled with the orbiting scroll 100.

Specifically, the drive shaft is a crankshaft. In the application, the phase angles of the movable vortex plate 100 and the fixed vortex plate 200 are oppositely arranged on the frame component 30, the movable vortex plate 100 moves under the drive of a crankshaft and is meshed with the fixed vortex plate 200 to form a series of crescent sealed cavities which are isolated from each other and have continuously-changing volumes.

In the present application, when the compressor is operated, the crank shaft of the driving assembly 300 rotates, and the crank shaft of the crank shaft drives the orbiting scroll 100 to move, and the orbiting scroll 100 makes a translational motion around the center of the crank shaft with a fixed radius under the anti-rotation restriction of the cross slip ring 400. Refrigerant from outside the compressor enters the compressor through the suction pipe 80, is sucked into a crescent suction cavity formed by the movable scroll 100 and the fixed scroll 200, enters a high-pressure cavity formed by the casing 10 and the partition plate 20 through the exhaust hole of the fixed scroll 200 and the check valve 70 after being compressed, namely, an oil-gas mixing area, and is discharged through the exhaust pipe 90. And after the oil-gas mixed fluid can be separated in the high-pressure cavity, the frozen oil can be recycled through a backflow path.

The compressor of the application can keep extremely low friction loss when working at any working point, and the dynamic and static disc compression cavities can be automatically separated to avoid the compressor from faults when the compressor sucks impurities or liquid is impacted.

From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

1. the axial gaps of the movable disc and the static disc of the vortex compressor are adjusted along with the working condition in a self-adaptive manner to achieve axial force balance, so that the sealing force is adjusted, and the compressor keeps extremely low friction loss and does not cross air when working at any working condition point;

2. the air exhaust cavity, namely the area surrounded by the upper part of the partition plate 20 and the shell 10, is automatically oil-returned under high pressure, so that lubrication is increased;

3. compared with the existing structure which is sold on the market and solves the same type of problem, the structure has better functions and effects and greatly reduces the cost.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (18)

1. A gap adjusting apparatus, comprising:

a housing (10);

the separation plate (20) is arranged in the shell (10) and is in circumferential sealing connection with the inner side wall of the shell (10), so that an upper space of the separation plate (20) is provided with a region for accommodating oil-gas mixture;

the rack assembly (30), the rack assembly (30) is arranged in the shell (10) and is positioned below the partition plate (20), a containing space is formed between the partition plate (20) and the rack assembly (30), the partition plate (20) is provided with a communication hole (21) for communicating the upper space and the containing space, and at least one part of one side of the rack assembly (30) close to the partition plate (20) can move along the axial direction of the rack assembly (30);

the connecting pipeline (40), the one end of connecting pipeline (40) with intercommunicating pore (21) intercommunication, the inside of frame subassembly (30) has connecting channel (31), the one end of connecting channel (31) with the other end intercommunication of connecting pipeline (40), the other end orientation of connecting channel (31) frame subassembly (30) motion's part and for it provides the drive power, intercommunicating pore (21), connecting pipeline (40) with connecting channel (31) constitute the backward flow route.

2. The gap adjusting device according to claim 1, further comprising a pressure regulating element (50), the pressure regulating element (50) being provided on the return path and regulating the pressure of the return path such that the pressure of the pressure regulating element (50) near an inlet side of the return path is greater than the pressure of an outlet side of the return path.

3. The gap adjusting device according to claim 2, characterized in that the pressure adjusting element (50) is provided at an end of the connecting pipe (40) connected to the connecting passage (31) or the pressure adjusting element (50) is provided inside the connecting passage (31).

4. The gap-adjusting device according to claim 2, characterized in that the pressure-adjusting element (50) comprises a pressure-adjusting lever (51), the diameter of the pressure-adjusting lever (51) near the inlet side of the return path being larger than the diameter of the outlet side of the return path.

5. The gap adjusting device according to claim 4, wherein the pressure adjusting lever (51) includes at least two connecting sections (511) arranged in an axial direction, diameters of the two connecting sections (511) are different, a diameter of the connecting section (511) near an inlet side of the return path is larger than a diameter of the connecting section (511) at an outlet side of the return path, and one end of the two connecting sections (511) connected to each other forms a stepped surface.

6. The gap-adjusting device according to claim 5, characterized in that the connecting section (511) of the pressure-adjusting lever (51) near the outlet side of the return path has a threaded section (512).

7. The gap adjustment device according to claim 2, characterized in that the pressure regulating element (50) comprises a pressure regulating rod (51), the circumferential outer side wall of the pressure regulating rod (51) having a threaded section (512).

8. The gap adjustment device according to any one of claims 1 to 7, characterized in that a side of the partition plate (20) remote from the frame assembly (30) has a first accommodation groove (22), and the communication hole (21) communicates with the first accommodation groove (22).

9. The gap adjustment device according to any one of claims 1 to 7, characterized in that the frame assembly (30) comprises:

a frame mount (32), the frame mount (32) having the connection channel (31);

the rack plate (33), the rack plate (33) is arranged on one side of the rack seat (32) close to the partition plate (20) and can move along the axial direction of the rack seat (32), and one end of the connecting channel (31) away from the connecting pipeline (40) faces the rack plate (33).

10. The gap adjustment device according to claim 9, characterized in that the side of the frame base (32) facing the frame plate (33) or the side of the frame plate (33) facing the frame base (32) has a second receiving groove (34), the connection channel (31) communicating with the second receiving groove (34).

11. The gap adjustment device according to claim 10, characterized in that the gap adjustment device further comprises a seal (60), the seal (60) being provided at a circumferential inner side wall of the second accommodation groove (34).

12. The gap adjustment device according to claim 9, characterized in that the side of the frame base (32) facing the partition plate (20) has a receiving chamber (321), the frame plate (33) being movably arranged in the receiving chamber (321).

13. The gap-setting device according to claim 9, characterized in that the connection channel (31) comprises a first channel section (311) extending in the axial direction of the housing base (32), a second channel section (312) extending in the radial direction of the housing base (32) and a third channel section (313) extending in the axial direction of the housing base (32), wherein,

-the length of the first channel section (311) is greater than the length of the third channel section (313); and/or

-the first channel section (311) and the third channel section (313) are both located on the upper side of the second channel section (312); and/or

One end of the second channel section (312) penetrates to the outer peripheral surface of the frame base (32); and/or

The distance between the first channel section (311) and the third channel section (313) in the radial direction of the frame base (32) is smaller than the length of the second channel section (312).

14. The gap adjustment device according to any one of claims 1 to 7, characterized in that the partition plate (20) is further provided with an air vent (23), the gap adjustment device further comprising a check valve (70), the check valve (70) being provided at an end of the air vent (23) remote from the frame assembly (30).

15. A compressor comprising the clearance adjustment device of any one of claims 1 to 14.

16. The compressor according to claim 15, wherein the partition plate (20), the frame assembly (30), and the connection pipe (40) of the gap adjusting device are all disposed in a region between the suction pipe (80) and the discharge pipe (90) of the compressor, the partition plate (20) is adjacent to the discharge pipe (90) with respect to the frame assembly (30), and the frame assembly (30) is adjacent to the suction pipe (80) with respect to the partition plate (20).

17. The compressor of claim 15, further comprising:

the movable vortex disc (100) and the fixed vortex disc (200) are oppositely arranged, the movable vortex disc (100) and the fixed vortex disc (200) are arranged in the accommodating space of the gap adjusting device, the fixed vortex disc (200) is connected with the partition plate (20) of the gap adjusting device, and the movable vortex disc (100) is abutted on the frame assembly (30) of the gap adjusting device;

and a driving assembly (300), wherein a driving shaft of the driving assembly (300) penetrates through the frame assembly (30) and is in driving connection with the movable vortex disc (100).

18. The compressor of claim 17, further comprising a cross slip ring (400), the cross slip ring (400) disposed between the frame assembly (30) and the orbiting scroll (100) and coupled to the orbiting scroll (100).