CN113638861A - Piston assembly, compressor and refrigerator with same - Google Patents
Piston assembly, compressor and refrigerator with same Download PDFInfo
- Publication number
- CN113638861A CN113638861A CN202111038773.5A CN202111038773A CN113638861A CN 113638861 A CN113638861 A CN 113638861A CN 202111038773 A CN202111038773 A CN 202111038773A CN 113638861 A CN113638861 A CN 113638861A
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- Prior art keywords
- piston
- mounting
- piston assembly
- hole
- pin
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The application provides a piston assembly, a compressor and a refrigerator with the same, and the piston assembly comprises a connecting rod structure, a piston body and a mounting structure, wherein a piston working surface is arranged on the piston body; the piston body is provided with a connecting position; the piston body is connected with the connecting rod structure through the mounting structure; the mounting structure is provided with at least two mounting positions; the connecting location is selectively connectable with one of the mounting locations to adjust a piston intercept of the piston assembly. According to the piston assembly, the compressor and the refrigerator with the same, the piston intercept can be effectively adjusted.
Description
Technical Field
The application belongs to the technical field of refrigerators, and particularly relates to a piston assembly, a compressor and a refrigerator with the same.
Background
At present, the refrigerator is used as an electric appliance in daily life, and along with the appearance of diversified refrigerators with multiple purposes and the increasing of the volume span of the refrigerator, the size of the refrigerator is increased. The existing reciprocating piston assembly with fixed parts and assembly modes and single discharge capacity is difficult to meet the matching requirements of various refrigerators.
Therefore, how to provide a piston assembly capable of effectively adjusting the piston intercept, a compressor and a refrigerator with the same become problems to be solved by the technical personnel in the field.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide a piston assembly, a compressor and a refrigerator with the same, which can effectively adjust the piston intercept.
In order to solve the above problems, the present application provides a piston assembly including:
a connecting rod structure;
the piston comprises a piston body, wherein a piston working surface is arranged on the piston body; the piston body is provided with a connecting position;
the piston body is connected with the connecting rod structure through the mounting structure; the mounting structure is provided with at least two mounting positions; the connecting location is selectively connectable with one of the mounting locations to adjust a piston intercept of the piston assembly.
Further, the piston body comprises a compression structure and a connection structure which are connected in sequence, and the connection position is arranged on the connection structure.
Further, the piston assembly further comprises a first plug-in structure; the mounting position is provided with a mounting hole, the connecting position is provided with a connecting hole, and the first inserting structure sequentially penetrates through the mounting hole and the connecting hole to be fixedly connected with the connecting structure.
Further, the piston assembly further comprises a second plug-in structure; the mounting structure is provided with a first fixing hole; the first inserting structure is also provided with a second fixing hole; the second inserting structure sequentially penetrates through the first fixing hole and the second fixing hole so as to fixedly connect the first inserting structure with the mounting structure; an included angle is formed between the plugging direction of the second plugging structure and the plugging direction of the first plugging structure.
Furthermore, the second plug structure comprises an elastic positioning pin which sequentially penetrates through the first fixing hole and the second fixing hole so as to fixedly connect the first plug structure with the mounting structure; the elastic positioning pin is in interference fit with the first fixing hole and/or the second fixing hole.
Further, a pin hole is formed in the mounting structure; the piston assembly includes a wrist pin that is capable of passing through the pin bore to securely connect the mounting structure with the connecting rod structure.
Further, the mounting positions and the pin holes are arranged in order in the moving direction of the piston body.
Furthermore, the mounting structure comprises a mounting cylinder with openings at two ends, and the piston body is mounted at the first end of the mounting cylinder; the connecting rod structure is arranged at the second end of the mounting cylinder.
Further, the at least two mounting positions are arranged in sequence in the moving direction of the piston body.
According to still another aspect of the present application, there is provided a compressor including a piston assembly as described above.
According to still another aspect of the present application, there is provided a refrigerator including a piston assembly as described above.
The piston assembly, the compressor and the refrigerator with the same are provided, for example, the installation positions comprise a first installation position and a second installation position, and when the connection position is connected with the first installation position, the piston intercept is a first piston intercept; when the connecting position is connected with the second mounting position, the piston intercept is a second piston intercept; this application adjusts piston assembly's piston intercept through adjusting piston body and mounting structure's mounted position. This application can effectively adjust the piston intercept.
Drawings
FIG. 1 is a schematic view of an installation configuration of a piston assembly according to an embodiment of the present application;
FIG. 2 is a longitudinal cross-sectional view of a piston assembly according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a piston body according to an embodiment of the present disclosure;
FIG. 4 is a longitudinal cross-sectional view of a piston body of an embodiment of the present application;
FIG. 5 is a top view of a piston assembly according to an embodiment of the present application;
fig. 6 is a longitudinal sectional view of a mounting structure of an embodiment of the present application;
FIG. 7 is a left side view of a mounting structure of an embodiment of the present application;
FIG. 8 is a schematic illustration of a piston assembly according to an embodiment of the present disclosure in a first piston intercept state;
FIG. 9 is a longitudinal cross-sectional view of the piston assembly at a first piston intercept position in accordance with an embodiment of the present application;
FIG. 10 is a longitudinal cross-sectional view of the piston assembly at a first piston intercept position in accordance with an embodiment of the present application;
FIG. 11 is a longitudinal cross-sectional view of a piston assembly at a second piston intercept position in accordance with an embodiment of the subject application.
The reference numerals are represented as:
1. a piston body; 11. a compression structure; 12. a connecting structure; 121. connecting holes; 13. a chamfering structure; 2. a mounting structure; 21. mounting holes; 211. a first mounting hole; 212. a second mounting hole; 22. a pin hole; 23. a first fixing hole; 24. an installation space; 251. an inner support surface; 252. an outer bearing surface; 3. a first plug-in structure; 31. a second fixing hole; 4. a connecting rod structure; 5. a piston pin; 6. and a second plug structure.
Detailed Description
Referring to fig. 1-11 in combination, a piston assembly includes a connecting rod structure 4, a piston body 1 and a mounting structure 2, wherein a piston working surface is arranged on the piston body 1; the piston body 1 is provided with a connecting position; the piston body 1 is connected with the connecting rod structure 4 through the mounting structure 2; the mounting structure 2 has at least two mounting positions thereon; the connecting position is selectively connected with one of the mounting positions to adjust the piston intercept of the piston assembly, for example, the mounting position comprises a first mounting position and a second mounting position, and when the connecting position is connected with the first mounting position, the piston intercept is a first piston intercept; when the connecting position is connected with the second mounting position, the piston intercept is a second piston intercept; the piston intercept of the piston assembly is adjusted by adjusting the mounting positions of the piston body 1 and the mounting structure 2, so that the problem of fixed intercept of a single-type piston in the prior art is solved; the problem that the displacement of the compressor is difficult to change under the condition that the structure of a matching part is not changed by a single-type piston is solved; the reciprocating compressor can reduce the types of parts in the production process of the reciprocating compressor, optimize material preparation and save cost. The mounting position may further include a plurality of mounting positions such as a third mounting position, a fourth mounting position, and the like. At least two mounting positions are arranged in sequence in the moving direction of the piston body 1.
The application also discloses some embodiments, and piston body 1 includes compact structure 11 and connection structure 12 that connect gradually, and the hookup location sets up on connection structure 12. In the moving direction of the piston body 1, the compression structure 11 and the connecting structure 12 are sequentially connected, the first surface of the compression structure 11 is a piston working surface, the second surface of the compression structure 11 is connected with the connecting structure 12, and the first surface and the second surface are oppositely arranged. The piston intercept of the piston assembly is adjusted by adjusting the mounting position of the connecting structure 12 to the mounting structure 2. Compression structure 11 is the cylinder structure, and the first terminal surface of cylinder forms the piston working face, and the piston working face passes through chamfer structure 13 with the cylinder side to be connected, can reduce the burr. The first end surface of the cylinder and the second end surface of the cylinder are parallel to each other. The second end face of the cylinder is connected with the connecting structure 12, the appearance of the connecting structure 12 is a rounded rectangle, the upper end face and the lower end face of the connecting structure are rectangular faces perpendicular to the rear end face of the compression part, the left side and the right side of the connecting structure are arc-shaped supporting faces, and the radius of the arc is matched with that of the inner supporting face 251 of the installation space 24. The connecting structure 12 is provided with a connecting hole 121 which is used for penetrating and matching with the first plug pin, and the connecting hole 121 is provided with a chamfer for reducing processing burrs.
The application also discloses some embodiments, piston assembly still includes that the mounted position of first grafting structure 3 is provided with mounting hole 21, and the hookup location is provided with connecting hole 121, and first grafting structure 3 runs through mounting hole 21 and connecting hole 121 in proper order to with connection structure 12 and mounting structure 2 fastening connection. First grafting structure 3 is first bolt, and first bolt runs through mounting hole 211 and connecting hole 121 in proper order to the cross section with connecting structure 12 and mounting structure 2 fastening connection connecting hole 121 is the rectangle, and the preceding, back fitting surface of connecting hole 121 are parallel with the first terminal surface of piston compression structure 11, and the left and right fitting surface is parallel with the left and right end face of connecting structure 12.
The application also discloses embodiments, the piston assembly further comprises a second plug-in structure 6; the mounting structure 2 is provided with a first fixing hole 23; the first inserting structure 3 is also provided with a second fixing hole 31; the second plug structure 6 penetrates through the first fixing hole 23 and the second fixing hole 31 in sequence to fixedly connect the first plug structure 3 with the mounting structure 2; an included angle is formed between the plugging direction of the second plugging structure 6 and the plugging direction of the first plugging structure 3. The plugging directions of the second plugging structure 6 and the first plugging structure 3 are perpendicular to each other.
The application also discloses some embodiments, the second plug-in structure 6 comprises an elastic positioning pin, and the elastic positioning pin sequentially penetrates through the first fixing hole 23 and the second fixing hole 31 to fixedly connect the first plug-in structure 3 with the mounting structure 2; the elastic positioning pin is in interference fit with the first fixing hole 23 and/or the second fixing hole 31. The elastic positioning pin is a positioning pin which has higher strength and can elastically deform towards the center of the pin, and the pin body of the elastic positioning pin is a spring steel coiled material with an opening on one side. Because the elastic locating pin with first, second fixed orifices be interference fit, elastic locating pin simple structure, but assembly back elastic deformation plays the constraint effect to the vertical direction of first grafting structure. The elastic positioning pin is made of spring steel and has certain flexibility and plasticity. During installation, the central lines of the first fixing hole 23 and the second fixing hole 31 are adjusted to coincide, the elastic positioning pin enters from one side, close to the pin hole, of the installation structure until the front portion of the elastic positioning pin is aligned with the front end face of the installation structure, and the elastic positioning pin is in an elastic deformation state at the moment and plays a role in restraining the vertical direction of the first plug-in structure 3. In the cross section of the spring positioning pin, the spring positioning pin is a ring with a gap, when the spring positioning pin enters the first fixing hole 23 and/or the second fixing hole 31, the spring positioning pin contracts towards the inner periphery side of the ring under the action of the inner wall of the hole to sequentially penetrate through the first fixing hole 23 and the second fixing hole 31, and when the spring positioning pin is installed, the spring positioning pin extends towards the outer periphery side of the ring to be in interference fit with the first fixing hole 23 and/or the second fixing hole 31.
The application also discloses embodiments, the mounting structure 2 is provided with a pin hole 22; the piston assembly comprises a piston pin 5, which piston pin 5 can be passed through the pin bore 22 for fastening the mounting structure 2 to the connecting rod structure 4. Namely, the compression structure 11 of the piston body 1 is a piston plate; the mounting structure 2 is internally provided with a mounting cavity, and the piston body 1 and the connecting rod mechanism are both positioned in the mounting cavity and are connected with the mounting structure 2 through a first bolt. The connecting structure 12 of the piston body 1 is provided with a connecting hole 121 matched with the first bolt, and the mounting structure 2 is provided with two mounting holes 21 matched with the first bolt and a pin hole 22 for mounting a connecting rod. The distance from the compression working section of the piston assembly to the motion center of the piston pin 5 is suitable for various reciprocating compressors with different displacements through the fixed matching of the piston plate connecting holes 121 and the mounting holes 21 at different positions.
The application also discloses embodiments, and the installation positions and the pin holes 22 are arranged in sequence in the moving direction of the piston body 1. The pin hole 22 is a circular hole.
The application also discloses some embodiments, the mounting structure 2 comprises a mounting cylinder with openings at two ends, and the piston body 1 is mounted at the first end of the mounting cylinder; the link structure 4 is mounted to the second end of the mounting cylinder. The connecting structure 12 of the piston body 1 is arranged in the cylinder of the mounting cylinder, and the connecting rod structure 4 is arranged in the cylinder of the mounting cylinder. The mounting cylinder is a symmetrical structure which is symmetrical about the central axis of the mounting cylinder, and the first mounting hole 211, the second mounting hole 212 and the pin hole 22 penetrate through the side walls on two sides of the central axis of the mounting cylinder, namely the first mounting hole 211, the second mounting hole 212 and the pin hole 22 all penetrate through the side wall on the first side of the central axis of the mounting cylinder and penetrate through the side wall on the second side of the central axis of the mounting cylinder. The installation barrel is internally provided with an installation space 24, the side walls of the two sides of the central axis of the installation barrel are provided with first fixing holes 23, and each first fixing hole 23 is correspondingly provided with a second inserting structure 6. The left and right sides of the installation space 24 are arc-shaped outer supporting surfaces 252, the diameter of the arc is equal to the outer diameter of the piston plate, the inner supporting surface 251 inside the installation space 24 is arc-shaped, and the radius of the arc is consistent with the supporting surface of the piston plate connecting part. The upper and lower end faces of the connecting and mounting space 24 are parallel to the upper and lower end faces of the internal mounting space 24, and the height of the mounting space 24 is greater than that of the connecting hole 121. Above the attachment holes 121 and the mounting space 24 are elastic alignment pin holes 22.
The application also discloses embodiments, wherein at least two mounting positions are arranged in sequence in the moving direction of the piston body 1. The mounting positions include a first mounting position and a second mounting position, which are arranged in order in the moving direction of the piston body 1, i.e., the reciprocating axis direction, and the pin holes 22. In the mounting state, the connecting hole 121 of the piston connecting structure 12 is overlapped with one of the mounting holes 21 on the mounting cylinder, and the first plug pin enters the mounting hole 21 to limit the reciprocating axial direction and horizontal direction positions of the piston body 1 and the mounting structure 2. When the fixed attachment mounting space 24 is the first mounting hole 211, the piston assembly has a first intercept. When the fixed attachment mounting space 24 is the second mounting hole 212, the piston assembly has a second intercept. In the reciprocating axial direction, the first mounting hole 211 and the second mounting hole 212 have the same cross section and are rectangular in cross section, and chamfers for reducing machining burrs are arranged at the connecting corners.
In the mounted state, when the connection hole 121 of the piston plate body corresponds to the position of one of the mounting holes 21, both end surfaces of the connection hole 121 are respectively connected to the edges of the piston plate connecting structure 12. The vertical outer surface of the first plug closely coincides with the inner surfaces of the connecting hole 121 and the mounting hole 21, and at this time, the distance from the working surface of the piston compression structure 11 to the piston pin 5 in the direction of the reciprocating axis becomes the intercept.
The connecting hole 121 of the connecting structure 12 corresponds to the position of the first mounting hole 211 of the mounting structure 2, and the first pin enters the mounting hole 21 from the first mounting hole 211 until the elastic positioning pin holes 22 of the first pin and the piston assembly coincide, so as to define the reciprocating axis direction and the horizontal direction position of the piston plate and the mounting structure 2. The connecting rod enters the mounting space 24 from the second end of the mounting cylinder and is provided with a connecting rod pin hole 22, and the connecting rod pin hole 22 coincides with the hole 22 of the piston pin 5 on the mounting structure 2. The piston pin 5 enters the piston pin 5 bore 22 from the side wall of the mounting cylinder until the piston pin 5 and piston assembly resilient dowel pin bores 22 coincide. The vertical position of the fixing pin and the piston pin 5 is limited by the interference fit of the elastic locating pin with the first bolt, the piston pin 5 and the elastic locating pin hole 22 of the mounting structure 2. The piston assembly is now in a first intercept operating condition.
The connecting hole 121 on the connecting structure 12 of the piston body 1 coincides with the second mounting hole 212 of the mounting structure 2, the front end face of the mounting cylinder coincides with the second end face of the compression structure 11, the first bolt enters the mounting hole 21 from the side wall until the first bolt is fixed with the piston body 1 through the elastic positioning pin hole 22, and the elastic positioning pin hole 22 limits the position of the piston body 1 and the mounting cylinder in the reciprocating axis direction and the horizontal direction. The connecting rod enters the mounting cylinder from the rear end of the mounting cylinder, and the connecting rod pin hole 22 corresponds to the position of the piston pin 5 hole 22 of the mounting structure 2. The piston pin 5 enters the piston pin 5 bore 22 from above until the piston pin 5 and piston assembly resilient dowel pin bores 22 coincide. The elastic locating pin hole 22 is in interference fit with the fixing pin, the piston pin 5 and the elastic locating pin hole 22 connecting the cavity, so that the position of the first difference pin and the piston pin 5 in the axial direction of the mounting cylinder is limited. The piston assembly is now in a second intercept operating condition. In the working state, the second intercept is smaller than the first intercept.
According to an embodiment of the present application, there is provided a compressor including a piston assembly, the piston assembly being the above-described piston assembly.
According to an embodiment of the application, a refrigerator is provided, which comprises a piston assembly, wherein the piston assembly is the piston assembly.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (11)
1. A piston assembly, comprising:
a link structure (4);
the piston comprises a piston body (1), wherein a piston working surface is arranged on the piston body (1); the piston body (1) is provided with a connecting position;
the piston body (1) is connected with the connecting rod structure (4) through the mounting structure (2); the mounting structure (2) is provided with at least two mounting positions; the attachment location is selectively attachable to one of the mounting locations to adjust a piston intercept of the piston assembly.
2. Piston assembly according to claim 1, characterised in that the piston body (1) comprises a compression structure (11) and a connection structure (12) connected in series, the connection location being provided on the connection structure (12).
3. Piston assembly according to claim 2, further comprising a first plug-in structure (3); the mounting position is provided with mounting hole (21), the hookup location is provided with connecting hole (121), first grafting structure (3) run through in proper order mounting hole (21) and connecting hole (121), with connection structure (12) with mounting structure (2) fastening connection.
4. A piston assembly according to claim 3, characterized in that it further comprises a second plug-in structure (6); a first fixing hole (23) is formed in the mounting structure (2); the first inserting structure (3) is also provided with a second fixing hole (31); the second plug-in structure (6) penetrates through the first fixing hole (23) and the second fixing hole (31) in sequence to enable the first plug-in structure (3) to be fixedly connected with the mounting structure (2); an included angle is formed between the plugging direction of the second plugging structure (6) and the plugging direction of the first plugging structure (3).
5. The piston assembly according to claim 4, characterized in that said second plug-in structure (6) comprises an elastic positioning pin which passes through said first fixing hole (23) and said second fixing hole (31) in sequence to firmly connect said first plug-in structure (3) with said mounting structure (2); the elastic positioning pin is in interference fit with the first fixing hole (23) and/or the second fixing hole (31).
6. A piston assembly according to claim 1, characterized in that the mounting structure (2) is provided with a pin hole (22); the piston assembly comprises a piston pin (5), the piston pin (5) being capable of passing through the pin bore (22) for fastening the mounting structure (2) with the connecting rod structure (4).
7. The piston assembly according to claim 6, characterized in that the mounting positions are arranged in sequence with the pin bores (22) in the direction of movement of the piston body (1).
8. A piston assembly according to claim 1, wherein the mounting structure (2) comprises a mounting cylinder open at both ends, the piston body (1) being mounted at a first end of the mounting cylinder; the connecting rod structure (4) is arranged at the second end of the mounting cylinder.
9. Piston assembly according to claim 1, wherein at least two of said mounting positions are arranged one after the other in the direction of movement of said piston body (1).
10. A compressor comprising a piston assembly, wherein the piston assembly is as claimed in any one of claims 1 to 9.
11. A refrigerator comprising a piston assembly, wherein the piston assembly is according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038773.5A CN113638861A (en) | 2021-09-06 | 2021-09-06 | Piston assembly, compressor and refrigerator with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111038773.5A CN113638861A (en) | 2021-09-06 | 2021-09-06 | Piston assembly, compressor and refrigerator with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113638861A true CN113638861A (en) | 2021-11-12 |
Family
ID=78425228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111038773.5A Withdrawn CN113638861A (en) | 2021-09-06 | 2021-09-06 | Piston assembly, compressor and refrigerator with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113638861A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005120891A (en) * | 2003-10-16 | 2005-05-12 | Hitachi Ltd | Piston for internal combustion engine and its manufacturing method |
| CN102032054A (en) * | 2009-10-06 | 2011-04-27 | 现代自动车株式会社 | Variable compression ratio device |
| CN112065690A (en) * | 2020-09-30 | 2020-12-11 | 珠海格力电器股份有限公司 | Compressor piston, compressor piston assembly, compressor and household appliance |
| CN113217343A (en) * | 2021-06-15 | 2021-08-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston assembly, reciprocating compressor and refrigerator |
| CN113339239A (en) * | 2021-07-05 | 2021-09-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston assembly, compressor and have its electrical apparatus |
| CN214118346U (en) * | 2020-07-28 | 2021-09-03 | 比亚迪股份有限公司 | Piston device for engine and engine |
-
2021
- 2021-09-06 CN CN202111038773.5A patent/CN113638861A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005120891A (en) * | 2003-10-16 | 2005-05-12 | Hitachi Ltd | Piston for internal combustion engine and its manufacturing method |
| CN102032054A (en) * | 2009-10-06 | 2011-04-27 | 现代自动车株式会社 | Variable compression ratio device |
| CN214118346U (en) * | 2020-07-28 | 2021-09-03 | 比亚迪股份有限公司 | Piston device for engine and engine |
| CN112065690A (en) * | 2020-09-30 | 2020-12-11 | 珠海格力电器股份有限公司 | Compressor piston, compressor piston assembly, compressor and household appliance |
| CN113217343A (en) * | 2021-06-15 | 2021-08-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston assembly, reciprocating compressor and refrigerator |
| CN113339239A (en) * | 2021-07-05 | 2021-09-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston assembly, compressor and have its electrical apparatus |
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Application publication date: 20211112 |
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| WW01 | Invention patent application withdrawn after publication |