CN111140653A - Refrigerating machine power piston assembly - Google Patents
Refrigerating machine power piston assembly Download PDFInfo
- Publication number
- CN111140653A CN111140653A CN201911128154.8A CN201911128154A CN111140653A CN 111140653 A CN111140653 A CN 111140653A CN 201911128154 A CN201911128154 A CN 201911128154A CN 111140653 A CN111140653 A CN 111140653A
- Authority
- CN
- China
- Prior art keywords
- outer sleeve
- power piston
- piston assembly
- porous body
- gas bearing
- 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.)
- Pending
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Classifications
-
- 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
- F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces
- F16J1/006—Pistons; Trunk pistons; Plungers obtained by assembling several pieces of different materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressor (AREA)
Abstract
The invention discloses a refrigerating machine power piston assembly which comprises an outer sleeve, a sealing column, a pressing cover, a porous body and a gas bearing retainer ring, wherein the sealing column is arranged in the outer sleeve, the pressing cover is arranged at the end part of the outer sleeve and is abutted against the sealing column to prevent the sealing column from being separated from the outer sleeve, a buffer cavity is formed between the sealing column and the outer sleeve, the porous body is in interference fit with the inner wall of the outer sleeve, the gas bearing retainer ring is in interference fit with the porous body to press the porous body on the inner wall of the outer sleeve, and the porous body and the gas bearing retainer ring are positioned in the buffer cavity.
Description
Technical Field
The invention relates to a refrigerator, in particular to a power piston assembly of the refrigerator.
Background
The Stirling refrigerator refrigerates by a cycle of cooling, compressing, absorbing heat and expanding working medium (hydrogen or helium) in a cylinder. The power piston is an important component of the Stirling refrigerator, and the Stirling refrigerator organizes the flow of working media in a closed circulation system by means of the movement of the power piston.
However, the existing power piston has the defects of complex structure, heavy weight and large loss of friction and inertia force.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a power piston assembly of a refrigerator, which has a light structure and small friction and inertia force.
The utility model provides a refrigerator power piston assembly, includes outer sleeve, sealed post, gland, porous body and gas bearing retaining ring, sealed post install in the outer sleeve, the gland install in outer sleeve tip and with sealed post is contradicted in order to prevent sealed post breaks away from the outer sleeve, sealed post with form the cushion chamber between the outer sleeve, the porous body with outer sleeve inner wall interference fit, the gas bearing retaining ring with porous body interference fit will the porous body is pressed the outer sleeve inner wall, the porous body reaches the gas bearing retaining ring is located in the cushion chamber.
Further, the porous body is made of ultra-high molecular weight polyethylene.
Furthermore, the outer sleeve is provided with an exhaust hole, the exhaust hole is positioned on one side of the porous body and the gas bearing retainer ring, and the exhaust hole is communicated with the buffer cavity through the porous body and the gas bearing retainer ring.
Further, refrigerator power piston subassembly still includes the atmoseal subassembly, the atmoseal subassembly includes filter tip and filter screen, the filter tip is located in the gland, the filter screen is located the filter tip below.
Further, the filter interior communicates with the buffer cavity.
Further, the gas seal assembly further comprises a hard spring and a soft spring, and the hard spring and the soft spring are located between the gland and the outer sleeve.
Further, the hard reed is positioned above the soft reed.
Furthermore, the refrigerating machine power piston assembly further comprises two sealing rings, one sealing ring is located between the gland and the outer sleeve, and the other sealing ring is located between the gland and the sealing column.
Further, the gas bearing retainer ring is a bearing with 8 small holes.
Furthermore, a coating is arranged on the outer surface of the outer sleeve and is made of polytetrafluoroethylene containing polyamide-imide and titanium dioxide.
Compared with the prior art, the refrigerating machine power piston assembly comprises the outer sleeve, the sealing column, the pressing cover, the porous body and the gas bearing retainer ring, wherein the sealing column is arranged in the outer sleeve, the pressing cover is arranged at the end part of the outer sleeve and is abutted against the sealing column to prevent the sealing column from being separated from the outer sleeve, the buffering cavity is formed between the sealing column and the outer sleeve, the porous body is in interference fit with the inner wall of the outer sleeve, the gas bearing retainer ring is in interference fit with the porous body to press the porous body on the inner wall of the outer sleeve, and the porous body and the gas bearing retainer ring are located in the buffering cavity.
Drawings
FIG. 1 is a cross-sectional view of a refrigerator power piston assembly in accordance with the present invention;
fig. 2 is another cross-sectional view of the chiller power piston assembly of fig. 1.
In the figure: 20. a refrigerator power piston assembly; 21. an outer sleeve; 210. an exhaust hole; 211. connecting holes; 212. mounting holes; 213. plating; 22. sealing the column; 23. a porous body; 24. a gas bearing retainer ring; 25. a gland; 26. a gas seal assembly; 260. a filter tip; 261. filtering with a screen; 262. a hard reed; 263. a soft reed; 27. a buffer chamber; 28. and (5) sealing rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-2, a refrigerating machine power piston assembly 20 of the present invention includes an outer sleeve 21, a sealing post 22, a porous body 23, a gas bearing retainer ring 24, a gland 25, a gas seal assembly 26, and two sealing rings 28.
The outer sleeve 21 is made of an aluminum alloy. The outer sleeve 21 is provided with a discharge hole 210, a connection hole 211, and a mounting hole 212. The vent holes 210 are located in the side wall of the outer sleeve 21 and communicate with the interior of the outer sleeve 21. The connecting hole 211 is a blind hole at the bottom of the outer sleeve 21. The mounting hole 212 is located at the center of the bottom of the outer sleeve 21. The outer sleeve 21 is provided with a coating 213 on its outer surface. The plating layer 213 is required to have good wear resistance and to be made of polytetrafluoroethylene (containing polyamideimide and titanium dioxide).
The sealing column 22 is made of carbon fiber filled polytetrafluoroethylene. The sealing post 22 is received inside the outer sleeve 21. The outer diameter of the sealing post 22 is smaller than the inner diameter of the outer sleeve 21, and a buffer cavity 27 is formed between the sealing post 22 and the outer sleeve 21.
The porous body 23 is made of ultra-high molecular weight polyethylene. The gas bearing retainer ring 24 is a double row 8-orifice bearing. The porous body 23 is interference fitted with the inner wall of the outer sleeve 21. The gas bearing retainer ring 24 is in interference fit with the porous body 23 to press the porous body 23 against the inner wall of the outer sleeve 21. At this time, the porous body 23 and the gas bearing retainer 24 are positioned in the buffer chamber 27, and the gas discharge hole 210 is positioned on the porous body 23 side. The exhaust hole 210 communicates with the cushion chamber 27 through the porous body 23 and the gas bearing retainer 24.
The gland 25 is mounted on the end of the outer sleeve 21 and interferes with the sealing post 22 to prevent the sealing post 22 from separating from the outer sleeve 21. A sealing ring 28 is located between the gland 25 and the outer sleeve 21 to provide a seal. Another sealing ring 28 is located between the gland 25 and the sealing post 22 to act as a seal.
The power piston assembly 20 of the refrigerator is sealed with the cylinder wall by a gas bearing. The air distribution piston rod passes through the refrigerator power piston assembly 20, and the gap between the air distribution piston rod and the refrigerator power piston assembly 20 is sealed. By the design, the power piston assembly 20 of the refrigerator is light in structure and small in friction and inertia force.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (10)
1. A chiller power piston assembly comprising an outer sleeve, characterized in that: refrigerator power piston assembly still includes sealed post, gland, porous body and gas bearing retaining ring, sealed post install in the outer sleeve, the gland install in outer sleeve tip and with sealed post is contradicted in order to prevent sealed post breaks away from the outer sleeve, sealed post with form the cushion chamber between the outer sleeve, the porous body with outer sleeve inner wall interference fit, the gas bearing retaining ring with porous body interference fit will the porous body is pressed the outer sleeve inner wall, the porous body reaches the gas bearing retaining ring is located in the cushion chamber.
2. The chiller power piston assembly of claim 1, wherein: the porous body is made of ultra-high molecular weight polyethylene.
3. The chiller power piston assembly of claim 1, wherein: the outer sleeve is provided with an exhaust hole, the exhaust hole is positioned on one side of the porous body and the gas bearing retainer ring, and the exhaust hole is communicated with the buffer cavity through the porous body and the gas bearing retainer ring.
4. The chiller power piston assembly of claim 1, wherein: the refrigerator power piston subassembly still includes the atmoseal subassembly, the atmoseal subassembly includes filter tip and filter screen, the filter tip is located in the gland, the filter screen is located the filter tip below.
5. The chiller power piston assembly of claim 4, wherein: the filter tip is inside with the cushion chamber intercommunication.
6. The chiller power piston assembly of claim 4, wherein: the gas seal assembly further comprises a hard reed and a soft reed, and the hard reed and the soft reed are located between the gland and the outer sleeve.
7. The chiller power piston assembly of claim 6, wherein: the hard reed is positioned above the soft reed.
8. The chiller power piston assembly of claim 1, wherein: the refrigerating machine power piston assembly further comprises two sealing rings, one sealing ring is located between the gland and the outer sleeve, and the other sealing ring is located between the gland and the sealing column.
9. The chiller power piston assembly of claim 1, wherein: the gas bearing retainer ring is a bearing with 8 small holes.
10. The chiller power piston assembly of claim 1, wherein: the outer sleeve is provided with a coating on the outer surface, and the coating is made of polytetrafluoroethylene containing polyamide imide and titanium dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128154.8A CN111140653A (en) | 2019-11-18 | 2019-11-18 | Refrigerating machine power piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128154.8A CN111140653A (en) | 2019-11-18 | 2019-11-18 | Refrigerating machine power piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111140653A true CN111140653A (en) | 2020-05-12 |
Family
ID=70517141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911128154.8A Pending CN111140653A (en) | 2019-11-18 | 2019-11-18 | Refrigerating machine power piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111140653A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3723950A1 (en) * | 1987-02-03 | 1988-08-11 | Helmut Prof Dr Krauch | Regenerative heat engine with a hypocycloidal eccentric crank mechanism |
| CN1421501A (en) * | 2002-12-19 | 2003-06-04 | 中国科学院兰州化学物理研究所 | Antiwear lubricating paint for engine piston ring |
| CN101107484A (en) * | 2005-01-18 | 2008-01-16 | 夏普株式会社 | Stirling engine |
| US20080314356A1 (en) * | 2007-04-23 | 2008-12-25 | Dean Kamen | Stirling Cycle Machine |
| CN103851819A (en) * | 2014-01-17 | 2014-06-11 | 中国科学院上海技术物理研究所 | Structure for driving linear and U-shaped pulse pipe cold fingers by single linear compressor and manufacturing method of structure |
| CN108331679A (en) * | 2018-04-09 | 2018-07-27 | 杨厚成 | A kind of sound energy power generation machine for preventing gas distribution piston from radial deflection occurs |
| CN108870792A (en) * | 2018-08-02 | 2018-11-23 | 杨厚成 | A kind of sound energy refrigerator device |
-
2019
- 2019-11-18 CN CN201911128154.8A patent/CN111140653A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3723950A1 (en) * | 1987-02-03 | 1988-08-11 | Helmut Prof Dr Krauch | Regenerative heat engine with a hypocycloidal eccentric crank mechanism |
| CN1421501A (en) * | 2002-12-19 | 2003-06-04 | 中国科学院兰州化学物理研究所 | Antiwear lubricating paint for engine piston ring |
| CN101107484A (en) * | 2005-01-18 | 2008-01-16 | 夏普株式会社 | Stirling engine |
| US20080314356A1 (en) * | 2007-04-23 | 2008-12-25 | Dean Kamen | Stirling Cycle Machine |
| CN103851819A (en) * | 2014-01-17 | 2014-06-11 | 中国科学院上海技术物理研究所 | Structure for driving linear and U-shaped pulse pipe cold fingers by single linear compressor and manufacturing method of structure |
| CN108331679A (en) * | 2018-04-09 | 2018-07-27 | 杨厚成 | A kind of sound energy power generation machine for preventing gas distribution piston from radial deflection occurs |
| CN108870792A (en) * | 2018-08-02 | 2018-11-23 | 杨厚成 | A kind of sound energy refrigerator device |
Non-Patent Citations (3)
| Title |
|---|
| （德）弗兰克•亨宁（FRANKHENNING）: "《轻量化手册 1 轻量化产品开发过程与生命周期评价》", 31 March 2015, 北京理工大学出版社 * |
| 赵韩: "《安徽汽车工程学会2010学术年会论文集》", 31 March 2011, 合肥工业大学出版社 * |
| 阮徐炤: "《设备泄漏防治技术》", 28 February 1981, 浙江科学技术出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20200512 |