CN113217343A - Piston assembly, reciprocating compressor and refrigerator - Google Patents

Piston assembly, reciprocating compressor and refrigerator Download PDF

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Publication number
CN113217343A
CN113217343A CN202110660039.6A CN202110660039A CN113217343A CN 113217343 A CN113217343 A CN 113217343A CN 202110660039 A CN202110660039 A CN 202110660039A CN 113217343 A CN113217343 A CN 113217343A
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CN
China
Prior art keywords
piston
pin
hole
piston pin
positioning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110660039.6A
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Chinese (zh)
Other versions
CN113217343B (en
Inventor
莫子扬
徐敏
陈娟娟
邓聪聪
张家铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Original Assignee
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Gree Green Refrigeration Technology Center Co Ltd of Zhuhai filed Critical Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority to CN202110660039.6A priority Critical patent/CN113217343B/en
Publication of CN113217343A publication Critical patent/CN113217343A/en
Application granted granted Critical
Publication of CN113217343B publication Critical patent/CN113217343B/en
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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
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
    • 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
    • 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
    • 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
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/10—Connection to driving members
    • F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
    • F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compressor (AREA)

Abstract

The application provides a piston assembly, a reciprocating compressor and a refrigerator. The piston assembly includes a piston pin assembly for connecting the piston to the connecting rod; the piston pin assembly comprises a piston pin, the piston pin is arranged in a piston pin hole, at least two mounting positions are arranged in the piston pin hole, and the piston pin can be located at different positions in the axial direction of the piston; one end of the connecting rod is sleeved on the piston pin. This application is in different positions through adjusting the piston pin in the piston pin is downthehole, can make piston assembly adapt to the piston user demand of different model displacements to the commonality obtains improving greatly.

Description

Piston assembly, reciprocating compressor and refrigerator
Technical Field
The application belongs to the technical field of refrigerators, and particularly relates to a piston assembly, a reciprocating compressor and a refrigerator.
Background
At present, with the improvement of living standard and quality, the overall dimension of the totally-enclosed reciprocating compressor is smaller and smaller, and with the improvement of manpower and material cost, the price competition of refrigerator manufacturers is fierce, the price requirement on the compressor is lower and lower, and the compressor with low price and cost has great competitive advantage.
In the piston assembly structure of the conventional structure, as shown in fig. 11, pistons of different types and displacements need to adjust piston intercepts, so redesign and machining are needed, the machining processes and working hours of parts need to be repeated, and the universality of the pistons of compressors of different displacements is poor.
Disclosure of Invention
Therefore, the application provides a piston assembly, reciprocating compressor and refrigerator, can solve the piston of the different model discharge capacities that exists among the above-mentioned prior art and need adjust the piston intercept and carry out redesign processing again, and the manufacturing procedure and the man-hour of part need be repeated, the poor problem of the piston commonality of the compressor of different discharge capacities.
In order to solve the above problems, the present application provides a piston assembly including:
a piston pin assembly for connecting the piston with the connecting rod; a piston pin hole is formed in the piston;
the piston pin assembly comprises a piston pin, the piston pin is arranged in a piston pin hole, at least two mounting positions are arranged in the piston pin hole, and the piston pin can be located at different positions in the axial direction of the piston; one end of the connecting rod is sleeved on the piston pin.
Optionally, the connecting rod moves to form a moving surface, and a diameter of the piston is positioned on the moving surface; all of the mounting locations enable the wrist pin to be located at different positions on the diameter.
Optionally, the piston pin assembly further comprises an adjusting block, and the piston pin is arranged in the piston pin hole through the adjusting block; the adjusting block is used for adjusting the piston pin to be in different positions.
Optionally, the adjusting block comprises an eccentric ring-shaped structure, and one end of the piston pin is arranged in an eccentric hole of the adjusting block in a penetrating manner; the adjusting block is provided with at least two positioning holes, and each positioning hole penetrates through the eccentric hole along the radial direction of the adjusting block.
Optionally, the positioning hole includes a first hole and a second hole, and the first hole and the second hole are communicated along the same diameter of the adjusting block.
Optionally, the center of the eccentric hole is located on the diameter where the first hole and the second hole are communicated.
Optionally, the positioning hole further includes a third hole, and an included angle between a center line of the third hole and a center line of the first hole or the second hole is set to be a preset angle on the cross section of the adjusting block.
Optionally, the positioning hole further includes a fourth hole, and the fourth hole and the third hole are communicated along the same diameter of the adjusting block.
Optionally, one end of the piston pin is provided with a mounting pin, the mounting pin is inserted into the eccentric hole, and the mounting pin is provided with a slot corresponding to the positioning hole.
Optionally, the piston assembly further comprises a positioning pin, and the piston is provided with an axial positioning pin hole; the positioning pin penetrates through the positioning pin hole to limit the piston pin or the adjusting block.
According to another aspect of the present application, there is provided a reciprocating compressor including the piston assembly as described above.
According to another aspect of the present application, there is provided a refrigerator including the piston assembly as described above or the reciprocating compressor as described above.
The present application provides a piston assembly comprising: a piston pin assembly for connecting the piston with the connecting rod; a piston pin hole is formed in the piston; the piston pin assembly comprises a piston pin, the piston pin is arranged in a piston pin hole, at least two mounting positions are arranged in the piston pin hole, and the piston pin can be located at different positions in the axial direction of the piston; one end of the connecting rod is sleeved on the piston pin.
At least two mounting positions are arranged in a piston pin hole of the piston, so that a piston pin can be mounted at different positions in the axial direction of the piston, and accordingly piston intercept, namely the distance from an end face on the compression side of the piston to the center of a small end of a connecting rod, can be changed correspondingly, and therefore for the same connecting rod, the positions of upper and lower dead points of the piston are changed, and the displacement of a cylinder can be changed.
This application is in different positions through adjusting the piston pin in the piston pin is downthehole, can make piston assembly adapt to the piston user demand of different model displacements to the commonality obtains improving greatly.
Drawings
Figure 1 is an exploded view of a moving part in a reciprocating compressor according to an embodiment of the present application;
FIG. 2 is a schematic perspective view of an adjustment block according to an embodiment of the present application;
FIG. 3 is a top view of the adjustment block of FIG. 2 in accordance with an embodiment of the present disclosure;
FIG. 4 is a schematic structural view of a piston pin according to an embodiment of the present application;
FIG. 5 is a schematic view of an assembled state of a maximum piston intercept of an embodiment of the present application;
FIG. 6 is a top view of the piston of FIG. 5 in an embodiment of the present application;
FIG. 7 is a schematic view of the minimum piston intercept assembly of an embodiment of the present application;
FIG. 8 is a top view of the piston of FIG. 7 in an embodiment of the present application;
FIG. 9 is a schematic view of an assembled state of piston intercepts in accordance with an embodiment of the present application;
FIG. 10 is a top view of the piston of FIG. 9 in an embodiment of the present application;
fig. 11 is an exploded view of a moving part in a conventional reciprocating compressor.
The reference numerals are represented as:
1. a piston; 11. a piston pin; 111. assembling a pin; 112. a slot; 12. an adjusting block; 121. an assembly hole; 122. positioning holes; 13. positioning pins; 2. a connecting rod; 21. a small end; 22. a big end; 3. a crankshaft.
Detailed Description
Referring collectively to fig. 1-10, according to an embodiment of the present application, a piston assembly includes:
a piston pin assembly for connecting the piston 1 and the connecting rod 2; a piston pin 11 hole is formed in the piston 1;
the piston pin assembly comprises a piston pin 11, the piston pin 11 is arranged in a piston pin hole, at least two mounting positions are arranged in the piston pin hole, and the piston pin 11 can be located at different positions in the axial direction of the piston 1; one end of the connecting rod 2 is sleeved on the piston pin 11.
The traditional piston pin 11 is inserted into a piston pin hole along the radial direction of the piston 1, and a small end 21 of the connecting rod 2 penetrates through the piston 1, so that the connecting rod 2 and the piston pin 11 are connected together in a shaft type, and finally the piston pin 11 is limited to fall off by a positioning pin 13. The piston pin 11 is a cylindrical structure and cannot change in position along the axial direction of the piston 1, so that the positions of the top dead center and the bottom dead center of the piston 1 in the axial direction are fixed and unchanged.
In the application, at least two mounting positions are arranged in the piston pin hole, so that the piston pin 11 can be assembled in the piston pin hole in a position-changing manner; different installation positions enable the piston pin 11 to be located at different positions in the axial direction of the piston 1, so that the positions of the top dead center and the bottom dead center of the piston 1 in the axial direction can be changed, as shown in fig. 5 and 7 for comparison, the piston pin 11 is located in the piston 1 at a position close to the connecting rod 2 in fig. 5, so that the connecting rod 2 extends into the piston 1 less, and relatively speaking, the distance between the left end surface of the piston 1 and the center of the small end 21 of the connecting rod 2 is larger, while the piston pin 11 is located in the piston 1 at a position far away from the connection in fig. 7, so that the connecting rod 2 extends into the piston 1 more, and the distance between the opposite left end surface of the piston 1 and the center of the small end 21 of the connecting rod 2 is smaller.
Therefore, the piston assembly can solve the problems that the piston 1 with different types and discharge capacities needs to adjust the piston intercept to carry out redesign and processing, and the processing procedure and the working hours of parts need to be repeatedly carried out.
In addition, the traditional piston intercept adjustment is realized by changing the length of the connecting rod 2, but when the piston 1 runs to the bottom dead center, the traditional piston intercept adjustment has the risk of interference with a crankshaft balance block, the balance weight of the crankshaft balance block is influenced, and the universality of compressor parts is influenced. And the length of connecting rod 2 does not change in this application, consequently can not take place piston 1 and the risk of interfering with the crankshaft balance weight when moving bottom dead center.
In some embodiments, the connecting rod 2 moves to form a moving surface, and a diameter of the piston 1 is positioned on the moving surface; all the mounting positions enable the piston pin 11 to be located at different positions on the diameter.
According to the piston, the piston pin 11 can be positioned at different positions along the axial direction of the piston 1 when positioned at different positions along the axial direction of the piston 1, and the effect of changing the piston intercept can also be achieved. In the adjusting process of combining the two, the radial adjustment has the effect of fine adjustment, and the adjustment is more convenient.
In some embodiments, the piston pin assembly further comprises an adjustment block 12, said piston pin 11 being arranged in said piston pin bore via the adjustment block 12, the adjustment block 12 being adapted to adjust said piston pin 11 in different positions.
The position of the piston pin 11 can be adjusted through an adjusting block 12; as shown in FIG. 1, the two ends of the piston pin 11 are connected to the adjusting block 12 of the eccentric structure, the adjusting block 12 is arranged in the piston pin hole, and the adjusting block 12 is rotated to change the position in the piston pin hole, so that the piston pin 11 can change the position along the axial direction of the piston 1. Eccentric means here that the axis of the piston pin 11 is offset from the axis of the piston pin bore.
In some embodiments, the adjusting block 12 comprises an eccentric ring-shaped structure, and one end of the piston pin 11 is arranged in an eccentric hole of the adjusting block 12 in a penetrating mode; at least two positioning holes 122 are formed in the adjusting block 12, and each positioning hole 122 penetrates through the eccentric hole along the radial direction of the adjusting block 12.
The adjusting block 12 is of an eccentric annular structure, and the adjusting block 12 rotates to enable the piston pin 11 in eccentric connection to change the axial position and the radial position, so that the change of piston intercept is realized; finally, the adjusting block 12 can be limited by a positioning hole 122 in the radial direction of the adjusting block 12, so that the position of the entire piston pin 11 and the adjusting block 12 in the piston 1 is fixed.
The adjusting block 12 may also be a ring structure with a polygonal outer periphery or other similar shapes, which can also achieve the above-mentioned effect of changing the piston intercept.
In some embodiments, the positioning hole 122 includes a first hole and a second hole, and the first hole and the second hole are arranged in communication along the same diameter of the adjusting block 12.
The adjusting block 12 is of an annular structure, and two radial positioning holes 122 with the same diameter enable the position change of the piston pin 11 to be obvious, so that the effect of adjusting the intercept of the piston 1 in a large range is achieved.
In some embodiments, the eccentric bore has a center located on a diameter at which the first bore and the second bore communicate.
More preferably, the conducting path of the first hole and the second hole on the same diameter passes through the center of the eccentric hole, namely the mounting position of the piston pin 11 on the adjusting block 12, namely the assembly hole 121, which is the maximum variation range of the intercept of the adjusting piston.
In some embodiments, the positioning hole 122 further includes a third hole, and an included angle between a center line of the third hole and a center line of the first hole or the second hole is set to be a preset angle in the cross section of the adjusting block 12.
As shown in FIG. 3, a third hole is arranged at a position of a preset angle A beside the first hole or the second hole, the position of the piston pin 11 is changed only by rotating the adjusting block 12, and the adjusting block 12 and the piston pin 11 are positioned through the third hole, so that the piston intercept is changed. A fourth hole may be further provided in a diameter direction along the third hole, and the fourth hole and the third hole are provided to communicate with each other along the same diameter of the adjustment block 12. The position of the piston pin 11 can be adjusted in multiple directions and multiple angles, so that the general type of the part is greatly improved.
In some embodiments, one end of the piston pin 11 is provided with a fitting pin 111, the fitting pin 111 is inserted into the eccentric hole, and the fitting pin 111 is provided with a slot 112 corresponding to the positioning hole 122.
In the concrete connection structure of the piston pin 11 and the adjusting block 12, an assembly pin 111 at the end of the piston pin 11 is inserted into an assembly hole 121 of the adjusting block 12, a slotted hole 112 is further arranged on the assembly pin 111, and a positioning pin 13 can be arranged in a positioning hole 122 on the adjusting block 12 and the slotted hole 112 on the piston pin 11 in a penetrating manner in the assembly process of the reciprocating compressor, so that the position fixing of the piston pin 11 and the adjusting block 12 is realized; when the rotation adjusting block 12 is exchanged to another positioning hole 122, the slot hole 112 may be configured as an open U-shaped slot structure to facilitate the alignment of the slot hole 112 on the piston pin 11 with the positioning hole 122 at the other angles.
In some embodiments, the piston assembly further comprises a positioning pin 13, and the piston 1 is provided with a positioning pin hole in the axial direction; the positioning pin 13 is arranged through the positioning pin hole to limit the piston pin 11 or the adjusting block 12.
The piston assembly structure of the conventional reciprocating compressor comprises a positioning pin 13 for radially limiting the piston pin 11 in the piston 1, wherein the positioning pin 13 is inserted into the piston 1 along a positioning pin hole in the axial direction of the piston 1. In the present application, the positioning pin 13 is inserted into the piston 1 through the positioning pin hole, but the positioning pin passes through the positioning hole 122 of the adjusting block 12 and then is partially inserted into the slot 112 of the piston pin 11. After the positioning pin 13 is pulled out, the adjusting block 12 is rotated to change another positioning hole 122 through which the positioning pin 13 passes, so that the piston pin 11 changes position, and the piston intercept is changed.
According to another aspect of the present application, there is provided a reciprocating compressor including the piston assembly as described above.
By adopting the piston assembly, when the adjusting block 12 is rotationally adjusted, the piston intercept in the reciprocating compressor is changed, the reciprocating compressor is suitable for the compression conditions of different discharge capacities, the universality of the whole product is stronger, the processing of pistons 1 or connecting rods 2 of different models is avoided, and the design and processing cost is reduced.
The structure of the moving part of the reciprocating compressor comprises an adjusting block 12, a piston pin 11, a piston 1, a positioning pin 13, a connecting rod 2 and a crankshaft 3, wherein the positioning pin 13, the piston 1, the connecting rod 2 and the crankshaft 3 are all of conventional structures, and a piston pin hole on the piston 1 is of a conventional circular hole structure, so that the processing and mass production are facilitated.
This application adopts eccentric regulating block 12 and piston pin 11 cooperation to realize the regulation of piston intercept, piston pin 11 is the axisymmetric structure, as shown in fig. 4, 11 both ends of piston pin are equipped with the little assembly pin 111 of diameter, assembly pin 111 structure and the cooperation of assembly hole 121 of regulating block 12 in fig. 2, be equipped with U type notch 112 on the assembly pin 111, U type notch 112 corresponds with the locating hole 122 cooperation in the regulating block 12 of fig. 2, under locating pin 13 interference fit, through the regulation with the corresponding cooperation realization piston intercept of different serial number locating holes 122.
The adjusting block 12 is provided with an assembling hole 121 matched with the piston pin 11 and a plurality of positioning holes 122, and the positioning holes 122 are distributed on the circumference of the adjusting block 12 in sequence, and can be arranged and designed according to specific requirements, the adjusting range of the displacement and the displacement sequence. The center of the assembling hole 121 and the center of the adjusting block 12 are eccentrically arranged, the eccentric amount D1 of the assembling hole 121 determines the maximum range 2D1 of the piston intercept of the adjusting block 12, the piston intercept adjusting range can be adjusted randomly in an eccentric circle range, large-range stepless adjustment can be achieved, the positioning holes 122 in the adjusting block 12 are distributed on the circumference of the adjusting block 12, the positioning holes 122 are sequentially and reversely distinguished, and adjustment of different piston intercepts is achieved. When 3 holes or 1 hole of the preset angle A are adopted, the intercept of the piston 1 is D2, the preset angle A can be adjusted according to the intercept of the piston 1 in practical use, the preset angle A is an acute angle, and the angle shown in figure 3 is 45 degrees.
The structure of the moving parts of the reciprocating compressor as shown in fig. 5 and 6 is the assembly structure of the maximum piston intercept in the present application, wherein D3 is the maximum piston intercept, 5 holes of the positioning hole 122 in the adjusting block 12 are matched with the positioning pin hole on the piston 1, the U-shaped slot hole 112 on the piston pin 11 faces 5 holes, and the eccentric adjusting block 12, the piston pin 11 and the piston 1 are fixed under the interference fit of the positioning pin 13 to enable the adjusting range of the adjusting block 12 to be at the maximum.
As shown in fig. 7 and 8, which are assembly views of the minimum piston intercept, D4 is the minimum piston intercept, 2 holes of the positioning hole 122 in the adjusting block 12 are matched with the positioning pin hole on the piston 1, the U-shaped slotted hole 112 on the piston pin 11 faces 2 holes, and the eccentric adjusting block 12, the piston pin 11 and the piston 1 are fixed under the interference fit of the positioning pin 13, so that the adjusting range of the adjusting block 12 is at the minimum.
Fig. 9 and 10 are assembly views of the intermediate value between the maximum and minimum piston intercepts, where D5 is the intermediate value piston intercept, 3 holes of the positioning hole 122 in the adjustment block 12 are fitted with the positioning pin hole in the piston 1, the U-shaped hole in the piston pin 11 faces 3 holes, and the eccentric adjustment block 12, the piston pin 11, and the piston 1 are fixed by interference fit of the positioning pin 13 so that the adjustment range of the adjustment block 12 is at the intermediate value. The angle of the positioning hole 122 on the adjusting block 12 can be adjusted according to specific requirements, so that adjustment of different intercept distances is realized.
According to another aspect of the present application, there is provided a refrigerator including the piston assembly as described above or the reciprocating compressor as described above.
It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. 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 (12)

1. A piston assembly, comprising:
a piston pin assembly for connecting the piston (1) with the connecting rod (2); a piston pin hole is formed in the piston (1);
the piston pin assembly comprises a piston pin (11), the piston pin (11) is arranged in a piston pin hole, at least two mounting positions are arranged in the piston pin hole, and the piston pin (11) can be located at different positions in the axial direction of the piston (1); one end of the connecting rod (2) is sleeved on the piston pin (11).
2. Piston assembly according to claim 1, characterized in that the connecting rod (2) moves with a plane of movement on which a diameter of the piston (1) lies; all the mounting positions enable the piston pin (11) to be located at different positions on the diameter.
3. A piston assembly according to claim 1 or 2, characterized in that the piston pin assembly further comprises an adjustment block (12), the piston pin (11) being arranged in the piston pin bore via the adjustment block (12); the adjusting block (12) is used for adjusting the piston pin (11) to different positions.
4. The piston assembly according to claim 3, characterized in that the adjusting block (12) comprises an eccentric circular ring structure, and one end of the piston pin (11) is arranged in an eccentric hole of the adjusting block (12) in a penetrating way; the adjusting block (12) is provided with at least two positioning holes (122), and each positioning hole (122) penetrates through the eccentric hole along the radial direction of the adjusting block (12).
5. The piston assembly of claim 4, wherein the positioning bore (122) includes a first bore and a second bore, the first bore and the second bore being in communication along a same diameter of the adjustment block (12).
6. The piston assembly of claim 5 wherein said eccentric bore is centered on a diameter at which said first bore and said second bore communicate.
7. The piston assembly of claim 6, wherein the positioning hole (122) further comprises a third hole, and an included angle between a center line of the third hole and a center line of the first hole or the second hole is set to a preset angle in a cross section of the adjusting block (12).
8. The piston assembly of claim 7, wherein said pilot bore (122) further comprises a fourth bore, said fourth bore and said third bore being in communication along a same diameter of said adjustment block (12).
9. The piston assembly according to claim 4, characterized in that one end of the piston pin (11) is provided with a fitting pin (111), the fitting pin (111) is arranged in the eccentric hole in a penetrating way, and the fitting pin (111) is provided with a slotted hole (112) corresponding to the positioning hole (122).
10. A piston assembly according to any one of claims 1-9, characterized in that the piston assembly further comprises a positioning pin (13), and the piston (1) is provided with an axial positioning pin hole; the positioning pin (13) penetrates through the positioning pin hole to limit the piston pin (11) or the adjusting block (12).
11. A reciprocating compressor comprising a piston assembly according to any one of claims 1 to 10.
12. A refrigerator comprising a piston assembly according to any one of claims 1 to 10 or a reciprocating compressor according to claim 11.
CN202110660039.6A 2021-06-15 2021-06-15 Piston assembly, reciprocating compressor and refrigerator Active CN113217343B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110660039.6A CN113217343B (en) 2021-06-15 2021-06-15 Piston assembly, reciprocating compressor and refrigerator

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Application Number Priority Date Filing Date Title
CN202110660039.6A CN113217343B (en) 2021-06-15 2021-06-15 Piston assembly, reciprocating compressor and refrigerator

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CN113217343B CN113217343B (en) 2022-07-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113638861A (en) * 2021-09-06 2021-11-12 珠海凌达压缩机有限公司 Piston assembly, compressor and refrigerator with same

Citations (2)

* Cited by examiner, † Cited by third party
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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113638861A (en) * 2021-09-06 2021-11-12 珠海凌达压缩机有限公司 Piston assembly, compressor and refrigerator with same

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