CN216922487U - Compression assembly and rotary compressor - Google Patents
Compression assembly and rotary compressor Download PDFInfo
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- CN216922487U CN216922487U CN202122671184.2U CN202122671184U CN216922487U CN 216922487 U CN216922487 U CN 216922487U CN 202122671184 U CN202122671184 U CN 202122671184U CN 216922487 U CN216922487 U CN 216922487U
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- 230000006835 compression Effects 0.000 title claims abstract description 61
- 238000007906 compression Methods 0.000 title claims abstract description 61
- 238000005192 partition Methods 0.000 claims abstract description 33
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 238000007373 indentation Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 11
- 239000003507 refrigerant Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a compression assembly and a rotary compressor, wherein the compression assembly comprises an air cylinder assembly, a crankshaft, a piston, a sliding vane, a main bearing and an auxiliary bearing; the air cylinder assembly comprises at least two air cylinders and a partition plate, each air cylinder is provided with a compression cavity and a first slide sheet groove, the partition plate is arranged between every two adjacent air cylinders, a second slide sheet groove is formed in the partition plate, the second slide sheet groove is opposite to the first slide sheet groove in position and jointly forms a slide sheet groove, and the slide sheet is arranged in the slide sheet groove; the crankshaft is provided with an eccentric part, the piston is sleeved on the eccentric part and positioned in the compression cavity, and the peripheral wall of the piston is abutted against the inner end face of the slide sheet; the main bearing and the auxiliary bearing are respectively arranged at the two axial ends of the air cylinder component. In the compression assembly and the rotary compressor that this application provided, through set up supplementary gleitbretter groove on the baffle, improve the bending deformation problem of gleitbretter, in addition, supplementary gleitbretter groove aligns easily with the original gleitbretter groove of cylinder, can avoid assembling dislocation problem, improves assembly efficiency.
Description
Technical Field
The application relates to the technical field of compressors, in particular to a compression assembly and a rotary compressor.
Background
In the design of the rotary compressor, due to the different pressures of the refrigerants at different positions of the compression mechanism, the differential pressure force borne by the sliding vane mainly comprises a first differential pressure force and a second differential pressure force, wherein the first differential pressure force is the differential pressure force borne by the part of the sliding vane extending into the compression chamber, the first differential pressure force is mainly determined by the extending length of the sliding vane, the height of the sliding vane and the pressures of the suction chamber and the discharge chamber, the second differential pressure force is the differential pressure force borne by the inner end of the sliding vane and the outer end of the sliding vane, and the second differential pressure force is mainly determined by the width of the sliding vane, the height of the sliding vane and the pressures in the compressor shell, the pressure of the suction chamber and the pressure of the discharge chamber.
Receiving the influence of first differential pressure, the gleitbretter can take place to warp, in order to be in reasonable within range with the deformation volume control of gleitbretter, then need make the gleitbretter guarantee certain width, for example the gleitbretter width generally needs to be greater than 3mm, but when the width of gleitbretter is great, second differential pressure can corresponding increase to indirectly increased the contact force of the inner of gleitbretter and piston, thereby can increase the power of compressor, influence rotary compressor's efficiency.
For this reason, a compression assembly composed of two bearing members and a cylinder is generally used in the industry, and a second slide groove is formed in at least one bearing to improve the problem of bending deformation of the slide, specifically, refer to patent document CN204312330U with patent name "compression mechanism for rotary compressor and rotary compressor having the same".
However, the above-mentioned compression assembly not only has a leakage problem, but also needs to adjust the relative position of the upper and lower bearings and the cylinder slightly in the pump body assembling process, and based on the processing precision of the current parts, the alignment limitation of the auxiliary slide groove (i.e. the second slide groove) and the original slide groove (the first slide groove) of the cylinder cannot be satisfied at all.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a compression assembly and a rotary compressor, which overcome the difficulties in the prior art, not only can improve the problem of bending deformation of a sliding vane, but also can avoid the problem of assembly dislocation of the sliding vane and a sliding vane groove in the assembly process, and effectively improve the assembly efficiency.
According to one aspect of the present invention, there is provided a compression assembly comprising: the device comprises an air cylinder assembly, a crankshaft, a piston, a sliding vane, a main bearing and an auxiliary bearing;
the air cylinder assembly comprises at least two air cylinders and at least one partition plate, each air cylinder is provided with a compression cavity and a first sliding sheet groove, the first sliding sheet grooves extend along the radial direction and are communicated with the compression cavity, the partition plate is arranged between every two adjacent air cylinders, a second sliding sheet groove is formed in the partition plate, the second sliding sheet groove is opposite to the first sliding sheet groove in position, the second sliding sheet groove and the first sliding sheet groove jointly form a sliding sheet groove, and the sliding sheets are arranged in the sliding sheet grooves;
the crankshaft penetrates through the cylinder assembly and is provided with an eccentric part;
the piston is sleeved on the eccentric part of the crankshaft and is positioned in a compression cavity of the cylinder, and the outer peripheral wall of the piston is abutted against the inner end face of the slide sheet;
the main bearing and the auxiliary bearing are respectively arranged at two axial ends of the air cylinder assembly and are used for supporting the crankshaft to rotate.
Optionally, in the compression assembly, the second vane groove penetrates the partition plate in a thickness direction of the partition plate.
Optionally, in the compression assembly, the width of the second slide groove is equal to the width of the first slide groove.
Optionally, in the compression assembly, the width of the sliding piece ranges from 0.5mm to 3 mm.
Optionally, in the compression assembly, an arc notch is formed in the outer peripheral wall of the piston, an arc protrusion is formed in the inner end face of the sliding piece, and the arc protrusion is matched with the arc notch.
Optionally, in the compression assembly, the radius of the arc notch is larger than the radius of the arc protrusion by X micrometers, and the value range of X is a rational number between [0 and 15 ].
According to another aspect of the present invention, there is provided a rotary compressor including the compression assembly as described above.
In the compression assembly and the rotary compressor provided by the utility model, the auxiliary sliding sheet groove is formed in the partition plate to realize effective support of the sliding sheet, so that the stress mode of the sliding sheet is changed, the problem of bending deformation of the sliding sheet is further solved, the overall energy efficiency of the rotary compressor is improved, in addition, the auxiliary sliding sheet groove is easy to align with the original sliding sheet groove of the air cylinder, the problem of assembly dislocation can be avoided in the assembly process, and the assembly efficiency is improved.
Drawings
The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments so that the features and advantages of the present invention will be more apparent.
FIG. 1 is a schematic structural diagram of a compression assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a piston and a sliding vane according to an embodiment of the present invention.
Detailed Description
Hereinafter, a detailed description will be given of embodiments of the present invention. While the utility model will be described and illustrated in connection with certain specific embodiments thereof, it should be understood that the utility model is not limited to those embodiments. Rather, modifications and equivalents of the utility model are intended to be included within the scope of the claims.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and components are not shown in detail in order not to obscure the subject matter of the utility model.
The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments so that the features and advantages of the present invention will be more apparent.
Please refer to fig. 1 to fig. 2, which are schematic structural diagrams of a compressing assembly according to an embodiment of the present invention. As shown in fig. 1 to 2, the compressing assembly 10 includes: a cylinder assembly, a crankshaft (not shown), a piston 4, a sliding vane 5, a main bearing 6 and an auxiliary bearing 7; the cylinder assembly comprises at least two cylinders and at least one partition plate 3, each cylinder is provided with a compression cavity (the reference number is not shown in the figure) and a first sliding sheet groove (the reference number is not shown in the figure), the first sliding sheet groove extends along the radial direction and is communicated with the compression cavity, the partition plate 3 is arranged between two adjacent cylinders, a second sliding sheet groove 3a is formed in the partition plate 3, the second sliding sheet groove 3a corresponds to the first sliding sheet groove and forms a sliding sheet groove together with the first sliding sheet groove, and the sliding sheet 5 is arranged in the sliding sheet groove; the crankshaft penetrates through the cylinder assembly and is provided with an eccentric part; the piston 4 is sleeved on the eccentric part and is positioned in the compression cavity, and the peripheral wall of the piston 4 is abutted against the inner end face of the slide sheet 5; the main bearing 6 and the auxiliary bearing 7 are respectively arranged at two axial ends of the cylinder assembly and are used for supporting the crankshaft to rotate.
Specifically, the cylinder assembly comprises two cylinders or a plurality of cylinders, and each cylinder is provided with a compression cavity and a first slide sheet groove. Piston 4 and gleitbretter 5 are all installed to the compression intracavity, on the eccentric portion of bent axle was located to piston 4 cover, can follow the rotation of bent axle carries out eccentric rotation. The slide 5 is stopped against the outer peripheral wall of the piston 4 and reciprocates.
In the present embodiment, the cylinder assembly includes a first cylinder 1 and a second cylinder 2, and the first cylinder 1 and the second cylinder 2 are disposed adjacent to each other with a partition plate 3 interposed therebetween. The main bearing 6 is disposed at an end of the first cylinder 1 facing away from the partition plate 3, the auxiliary bearing 7 is disposed at an end of the second cylinder 2 facing away from the partition plate 3, and the main bearing 6 and the auxiliary bearing 7 are used for supporting the crankshaft and are matched with the partition plate 3 to respectively seal compression cavities of the first cylinder 1 and the second cylinder 2.
As shown in fig. 1, the compression cavity of the first cylinder 1 is defined by a main bearing 6, the first cylinder 1 and a partition plate 3, the compression cavity of the second cylinder 2 is defined by a secondary bearing 7, the second cylinder 2 and the partition plate 3, a first vane groove extending in the radial direction and communicating with the compression cavity is formed on each of the first cylinder 1 and the second cylinder 2, the upper end of the first vane groove penetrates through the upper end surface of the corresponding cylinder, and the lower end of the first vane groove penetrates through the lower end surface of the corresponding cylinder.
A second sliding vane groove 3a is formed in the partition plate 3, the second sliding vane groove 3a also extends along the radial direction of the cylinder 1 and is opposite to the first sliding vane groove in position, and the first sliding vane groove and the second sliding vane groove form a sliding vane groove together.
In this embodiment, the second vane groove 3a penetrates the partition plate 3 in the thickness direction of the partition plate 3. Preferably, the width of the second vane groove 3a is equal to the width of the first vane groove. When the partition plate 3 and the first cylinder 1 are assembled in place, the projections of the first slide groove and the second slide groove 3a on a plane perpendicular to the axis of the first cylinder 1 are overlapped. Similarly, when the partition plate 3 and the second cylinder 2 are assembled in place, the projections of the first slide groove and the second slide groove 3a on a plane perpendicular to the axis of the second cylinder 2 coincide.
The crankshaft sequentially penetrates through the main bearing 6, the first cylinder 1, the partition plate 3, the second cylinder 2 and the auxiliary bearing 7, the eccentric portion of the crankshaft is located in the compression cavities of the first cylinder 1 and the second cylinder 2 respectively, the piston 4 is roughly formed into a cylindrical shape and sleeved on the eccentric portion, the rotation axis of the crankshaft coincides with the central axis of the compression cavity, the crankshaft can drive the piston 4 to roll along the inner wall of the compression cavity in the compression cavity through the eccentric portion in the rotating process, and in the rolling process, the peripheral wall of the piston 4 is always in linear butt joint with the inner peripheral side wall of the compression cavity.
The sliding sheet 5 is arranged in a sliding sheet groove formed by the first sliding sheet groove and the second sliding sheet groove 3a, and the inner end face of the sliding sheet 5 abuts against the outer peripheral wall of the piston 4. Specifically, the sliding sheet 5 can be slidably arranged in the sliding sheet groove through a spring, wherein the outer end of the spring is connected with the first cylinder 1 or the second cylinder 2, the inner end of the spring is connected with the outer end of the sliding sheet 5, the spring is always in a compression state, so that the inner end of the sliding sheet 5 can be pushed to extend into a compression cavity and be abutted against the outer peripheral wall of the piston 4 under the action of the elastic force of the spring, and therefore, in the process that the crankshaft drives the piston 4 to roll, the sliding sheet 5 can do reciprocating forward and backward movement in the sliding sheet groove under the dual action of the piston 4 and the spring. Here, it should be understood that the "inner end" refers to an end adjacent to the cylinder center axis, and the opposite end thereof is the "outer end", i.e., an end away from the cylinder center axis.
In the process of the movement of the sliding sheet 5, because the outer end of the sliding sheet 5 is always positioned in the sliding sheet groove, and the inner end of the sliding sheet 5 is always tightly abutted to the peripheral wall of the piston 4, so that the sliding sheet 5 and the piston 4 can separate the compression cavity into an air suction cavity and an air exhaust cavity which are isolated from each other, the air suction cavity can suck a refrigerant through an air suction port, the air exhaust cavity can exhaust the compressed refrigerant through an air exhaust port, the space volume of the air suction cavity and the air exhaust cavity is continuously changed in the process of rolling the piston 4 and sliding the sliding sheet 5, the refrigerant flowing into the air suction cavity from the air suction port can be compressed, and then the refrigerant is exhausted from the air exhaust port on the air exhaust cavity. Here, in the process of compressing the refrigerant, the two sides of the sliding vane 5 are a suction chamber and a discharge chamber, respectively, and the sliding vane 5 is subjected to a pressure difference Fa due to the difference in gas pressure between the suction chamber and the discharge chamber.
The in-process of gleitbretter 5 at reciprocating motion, wherein one end of gleitbretter 5 cooperates completely all the time in first gleitbretter groove, the other end of gleitbretter 5 cooperates completely all the time in second gleitbretter groove 3a, first gleitbretter groove with second gleitbretter groove 3a can support gleitbretter 5 effectively to improve gleitbretter 5's deformation problem.
In this embodiment, by providing the second vane groove 3a on the partition plate 3, it is possible to effectively support the vane 5, thereby improving the stress manner of the vane 5, which is similar to the stress manner of a cantilever beam changed into a simply supported beam, and avoiding the bending deformation of the vane 5, so that it is possible to use a thinner vane 5, i.e., it is possible to greatly reduce the width of the vane 5, thereby reducing the contact force between the inner end surface of the vane 5 and the piston 4, and avoiding a large pressure difference Fb between the inner end of the vane 5 and the outer end of the vane 5, thereby reducing the power of the rotary compressor and improving the overall energy efficiency of the rotary compressor. In addition, through setting up second gleitbretter groove 3a, can be so that the extension length of gleitbretter 5 does not receive the influence of gleitbretter 5 protrusion rate to increase the protrusion rate of gleitbretter 5, reduce the total length of gleitbretter 5, increase the eccentric volume of bent axle, make rotary compressor's flat design become possible.
Here, it should be understood that "width" refers to a width perpendicular to a moving direction of the slide plate 5, "length" refers to a length along the moving direction of the slide plate 5, "protruding length of the slide plate 5" refers to a length of the slide plate 5 protruding into the compression chamber, "protruding rate of the slide plate 5" refers to a ratio of the protruding length of the slide plate 5 to a total length of the slide plate 5, "eccentric amount e" of the crankshaft may be understood as a distance between a central axis of the piston 4 and a central axis of the cylinder 1, and the central axis of the cylinder is a central axis of the compression chamber.
In this embodiment, one end of the sliding sheet 5 is located in the first sliding sheet groove, and the other end of the sliding sheet 5 is located in the second sliding sheet groove 3a, so the height of the sliding sheet 5 may be greater than the height of the compression cavity. Here, it is to be understood that "height" refers to a height in the axial direction of the first cylinder 1 or the second cylinder 2.
In this embodiment, because second slide groove 3a is seted up on baffle 3, at the in-process of assembly, can not arouse the problem of the assembly dislocation of gleitbretter 5 and second slide groove 3a because of the aligning process, that is to say, can guarantee the depth of parallelism of second slide groove 3a and first slide groove conveniently and effectively to ensure that gleitbretter 5 can freely, smoothly move in the slide groove, avoid gleitbretter 5 to take place the problem such as motion card dies, thereby improve assembly efficiency effectively.
The width of gleitbretter 5 among the correlation technique generally is 3.2mm ~ 5mm, owing to set up second gleitbretter groove 3a on baffle 3, has changed the atress mode of gleitbretter 5 from this, has improved the bending deformation problem of gleitbretter 5, and then can further reduce the width of gleitbretter 5 and gleitbretter groove, for example the width D of gleitbretter 5 can reduce to 0.5mm ~ 3mm, that is to say, in the cylinder assembly of seting up second gleitbretter groove 3a, the width D of gleitbretter 5 can satisfy: 0.5mm < D < 3mm, and preferably the width D of the slider 5 further satisfies: d is more than or equal to 1mm and less than or equal to 2.5mm, so that the rotary compressor is convenient to process and manufacture and the overall performance of the rotary compressor is improved.
Along with the reduction of the width of the sliding sheet 5, the width of the sliding sheet groove can be correspondingly reduced, so that the sliding sheet 5 can reliably and stably reciprocate in the sliding sheet groove, and the problems of leakage and the like are avoided. In this embodiment, the width of the second vane groove 3a is equal to the width of the first vane groove. Thus, the processing is convenient, and the slide sheet 5 can reliably and stably reciprocate in the slide sheet groove.
In this embodiment, because the second slip sheet groove 3a has been seted up on the baffle 3 to the atress mode of gleitbretter 5 has been changed, makes the extension length of gleitbretter 5 not receive the influence of gleitbretter 5 extension rate, thereby can further increase the extension rate of gleitbretter 5, reduce the total length of gleitbretter 5. Therefore, the effective length L of the sliding vane 5 and the eccentric amount e of the crankshaft can satisfy: (2 × e) mm ≦ L ≦ 2 × e +20mm, and preferably, the effective length L of the slide 5 and the eccentric amount e of the crankshaft further satisfy: l is more than or equal to 2 × e +3mm and less than or equal to 2 × e +8mm, thereby facilitating the processing and manufacturing and improving the overall performance of the rotary compressor.
The "effective length of the sliding piece 5" may be understood as a length between an inner end of the sliding piece 5 and an effective outer end of the sliding piece 5 when the piston 4 moves to the bottom dead center position, where the "effective outer end" refers to an outermost end of the sliding piece 5 contacting the first sliding piece groove when the piston 4 moves to the bottom dead center position.
In this embodiment, the second vane groove 3a penetrates the partition plate 3 in the thickness direction of the partition plate 3. Thus, the processing of the partition plate 3 can be facilitated, and it can be ensured that the thickness of the partition plate 3 is not too thick to further facilitate the flattening of the rotary compressor.
In this embodiment, the outer peripheral wall of the piston 4 and the inner end surface of the sliding piece 5 are provided with structures matched with each other to avoid leakage. Please refer to fig. 2, which is a schematic structural diagram of a piston and a sliding vane according to an embodiment of the present invention. As shown in fig. 2, an arc notch (no reference numeral shown in the figure) is arranged on the peripheral wall of the piston 4, an arc protrusion (no reference numeral shown in the figure) is arranged on the inner end face of the slide sheet 5, the arc protrusion is matched with the arc notch in shape and size, and the arc protrusion can be inserted into the arc notch, so that the gap between the slide sheet 5 and the piston 4 is reduced, the amount of gas leaked from high-pressure gas in a compression cavity to a low-pressure cavity is reduced, the reduction of refrigerating capacity is avoided, and the performance of the compressor is improved.
Preferably, the radius of the arc-shaped notch is larger than the radius of the arc-shaped protrusion by X micrometers, the value range of X is a rational number between [0 and 15], and the radius of the arc-shaped notch is slightly larger in principle, so that the compression assembly 10 is ensured not to have a leakage problem.
Accordingly, the present embodiment also provides a rotary compressor including the compression assembly 10 as described above. Please refer to the above, which is not described herein.
Because the compression assembly 10 that adopts this embodiment to provide among the rotary compressor has changed the atress mode of gleitbretter 5, consequently can suitably attenuate gleitbretter and gleitbretter groove width, further reduce the compressor entry, the deformation problem of gleitbretter 5 also can be improved moreover, reduces the wearing and tearing volume of gleitbretter 5 and gleitbretter groove department from this, improves the reliability of compressor, still can suitably reduce the clearance in gleitbretter 5 and gleitbretter groove to improve the volumetric efficiency of compressor, promote the efficiency of compressor. More importantly, the compression assembly 10 provided by the embodiment can improve the assembly dislocation problem of the sliding sheet and the auxiliary sliding sheet groove, and solve the problems of difficult sealing or assembly and part increase in the prior art.
In this embodiment, the rotary compressor is a double-cylinder compressor. In other embodiments, the rotary compressor may also be a multi-cylinder compressor.
In summary, according to the compression assembly and the rotary compressor, the auxiliary sliding sheet groove is formed in the partition plate to effectively support the sliding sheet, so that the stress mode of the sliding sheet is changed, the bending deformation problem of the sliding sheet is solved, the overall energy efficiency of the rotary compressor is improved, in addition, the auxiliary sliding sheet groove is easily aligned with the original sliding sheet groove of the air cylinder, the problem of assembly dislocation can be avoided in the assembly process, and the assembly efficiency is improved. Furthermore, the inner end face of the sliding piece is provided with an arc-shaped protrusion, the outer peripheral wall of the piston is correspondingly provided with an arc-shaped notch matched with the outer peripheral wall of the piston, and the arc-shaped protrusion is inserted into the arc-shaped notch to avoid the leakage problem.
The foregoing is a more detailed description of the present application in connection with specific preferred embodiments and it is not intended that the present application be limited to these specific details. For those skilled in the art to which the present application pertains, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be considered as belonging to the protection scope of the present application.
Claims (6)
1. A compression assembly, comprising: the device comprises an air cylinder assembly, a crankshaft, a piston, a sliding vane, a main bearing and an auxiliary bearing;
the air cylinder assembly comprises at least two air cylinders and at least one partition plate, each air cylinder is provided with a compression cavity and a first sliding sheet groove, the first sliding sheet grooves extend along the radial direction and are communicated with the compression cavity, the partition plate is arranged between every two adjacent air cylinders, a second sliding sheet groove is formed in the partition plate, the second sliding sheet groove is opposite to the first sliding sheet groove in position, the second sliding sheet groove and the first sliding sheet groove jointly form a sliding sheet groove, and the sliding sheets are arranged in the sliding sheet grooves;
the crankshaft penetrates through the cylinder assembly and is provided with an eccentric part;
the piston is sleeved on the eccentric part of the crankshaft and is positioned in a compression cavity of the cylinder, and the peripheral wall of the piston is abutted against the inner end face of the slide sheet; an arc-shaped notch is formed in the outer peripheral wall of the piston, an arc-shaped protrusion is arranged on the inner end face of the sliding piece, and the arc-shaped protrusion is matched with the arc-shaped notch;
the main bearing and the auxiliary bearing are respectively arranged at two axial ends of the air cylinder assembly and are used for supporting the crankshaft to rotate.
2. The compression assembly of claim 1, wherein the second slide groove extends through the diaphragm in a thickness direction of the diaphragm.
3. The compression assembly of claim 1, wherein the second slide groove has a width equal to a width of the first slide groove.
4. The compression assembly of claim 1, wherein the width of the slip ranges between 0.5mm and 3 mm.
5. The compression assembly of claim 1, wherein the radius of the arcuate indentation is X microns greater than the radius of the arcuate projection, and X has a value in the range of a rational number between [0, 15 ].
6. A rotary compressor, comprising: the compression assembly of any one of claims 1-5.
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| CN202122671184.2U CN216922487U (en) | 2021-11-03 | 2021-11-03 | Compression assembly and rotary compressor |
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| CN202122671184.2U CN216922487U (en) | 2021-11-03 | 2021-11-03 | Compression assembly and rotary compressor |
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| CN116066363A (en) * | 2021-11-03 | 2023-05-05 | 上海海立电器有限公司 | Compression assembly and rotary compressor |
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| CN116066363A (en) * | 2021-11-03 | 2023-05-05 | 上海海立电器有限公司 | Compression assembly and rotary compressor |
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