CN108534383B - Protection device for power vibration absorber of Stirling refrigerator - Google Patents
Protection device for power vibration absorber of Stirling refrigerator Download PDFInfo
- Publication number
- CN108534383B CN108534383B CN201810448924.6A CN201810448924A CN108534383B CN 108534383 B CN108534383 B CN 108534383B CN 201810448924 A CN201810448924 A CN 201810448924A CN 108534383 B CN108534383 B CN 108534383B
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- CN
- China
- Prior art keywords
- vibration absorber
- rubber pad
- buffer rubber
- protective cover
- absorber
- 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.)
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 74
- OIGNJSKKLXVSLS-VWUMJDOOSA-N prednisolone Chemical compound O=C1C=C[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 OIGNJSKKLXVSLS-VWUMJDOOSA-N 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 40
- 230000001012 protector Effects 0.000 claims 2
- 230000007613 environmental effect Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/13—Vibrations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a protection device for a Stirling refrigerator power absorber, which comprises a protection cover shell, a protection cover rear cover, an upper buffer rubber pad and a lower buffer rubber pad, wherein the protection cover shell is covered on the outer side of the power absorber and is connected with the tail end of the refrigerator, the protection cover rear cover is arranged at an opening at the upper end of the protection cover shell, the upper buffer rubber pad is arranged at the bottom of the protection cover shell, and the lower buffer rubber pad is arranged at the top of the tail end of the refrigerator. And if the longitudinal vertical distance between the mass ring of the dynamic vibration absorber and the upper and lower buffer rubber pads is s, s meets the formula F/K < s < delta F/K, wherein F is the maximum load born by the dynamic vibration absorber during working, K is the spring stiffness of the dynamic vibration absorber, and delta is the design safety coefficient of the spring of the dynamic vibration absorber. The invention can greatly improve the short-time environmental vibration bearing capacity of the dynamic vibration absorber and expand the application range of the dynamic vibration absorber in the Stirling refrigerator.
Description
Technical Field
The invention relates to the technical field of Stirling refrigerators, in particular to a protection device for a power vibration absorber of a Stirling refrigerator.
Background
The Stirling refrigerator mainly comprises a compressor and an expander, wherein the compressor mainly comprises a single-set structure and an opposite-set structure, and the expander mainly comprises a single-set structure. For either the single compressor or the expander, there is a large vibration that can severely impact the operating environment of the Stirling cooler. In order to reduce the vibration generated by the single compressor or the expander, a passive vibration reduction scheme can be adopted, namely a dynamic vibration absorber is added at the tail end of the single compressor or the expander. However, because of the application environment of the stirling cooler, some stirling coolers need to bear large environmental vibrations in short time, and therefore, the dynamic vibration absorber also needs to bear large environmental vibrations in short time along with the stirling cooler.
According to the principle of the dynamic vibration absorber, the dynamic vibration absorber mainly comprises a mass ring and a spring, and the aim of reducing the vibration of the Stirling refrigerator is achieved by tuning the natural frequency of the dynamic vibration absorber. When the dynamic vibration absorber bears short-time large environmental vibration, the spring of the dynamic vibration absorber can have short-time resonance, so that the spring of the dynamic vibration absorber is broken and destroyed, the dynamic vibration absorber is invalid, and the resonance phenomenon cannot be avoided.
The existing Stirling refrigerator is generally applied to occasions with small environmental vibration if a dynamic vibration absorber is adopted, and has limited application range. For occasions with short-time large environmental vibration, some Stirling refrigerators do not adopt a dynamic vibration absorber scheme, but adopt an active vibration reduction scheme, but the active vibration reduction is more complex than the dynamic vibration absorber structure, the design difficulty is high, the realization is difficult, and other Stirling refrigerators directly do not adopt any vibration reduction scheme.
Disclosure of Invention
The invention aims to provide a protection device for a power vibration absorber of a Stirling refrigerator, which can greatly improve the short-time environment vibration bearing capacity of the power vibration absorber and expand the application range of the power vibration absorber in the Stirling refrigerator.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A protection device for Stirling refrigerator power absorber, including cover establish in the power absorber outside and with the safety cover shell that refrigerating machine tail end links to each other, install the safety cover back lid of safety cover shell upper end opening part, install the upper buffer rubber pad of safety cover shell bottom and install the lower buffer rubber pad at refrigerating machine tail end top. The power vibration absorber comprises a spring and a mass ring, the power vibration absorber is arranged at the top of the tail end of the refrigerator, and the mass ring moves back and forth along with the spring when the power vibration absorber works. And if the longitudinal vertical distance between the mass ring of the dynamic vibration absorber and the upper and lower buffer rubber pads is s, s meets the formula F/K < s < delta F/K, wherein F is the maximum load born by the dynamic vibration absorber during working, K is the spring stiffness of the dynamic vibration absorber, and delta is the design safety coefficient of the spring of the dynamic vibration absorber. The longitudinal vertical distance s between the mass ring of the dynamic vibration absorber and the upper buffer rubber pad and the lower buffer rubber pad is reserved, and the numerical value of the distance s is limited, so that the dynamic vibration absorber can be effectively protected.
Further, the protective cover shell is a hollow cylinder with openings at the upper end and the lower end, and the peripheries of the upper end and the lower end of the hollow cylinder are respectively provided with a mounting part.
Furthermore, any connection mode can be adopted between the protective cover shell and the tail end of the refrigerator. Preferably, the protective cover shell is welded or screwed on the tail end of the refrigerator.
Furthermore, the rear cover of the protective cover and the shell of the protective cover can be connected in any mode. Preferably, the protective cover rear cover is welded or screwed on the protective cover shell. When the power vibration absorber is installed, the rear cover of the protective cover is firstly installed on the shell of the protective cover, and then the rear cover and the shell are covered on the outer side of the power vibration absorber and then are connected with the tail end of the refrigerating machine.
Further, the shape, structure and material of the upper and lower cushion rubber pads are not limited, and any rubber material may be used as long as it can play a role in cushion. Preferably, the upper cushion rubber pad and the lower cushion rubber pad are both annular.
According to the technical scheme, the protective cover shell and the protective cover rear cover are arranged on the periphery of the power vibration absorber, the buffer rubber pad is arranged between the power vibration absorber and the protective cover rear cover and between the power vibration absorber and the tail end of the refrigerator, and meanwhile, the distance between the buffer rubber pad and the mass ring of the power vibration absorber is designed, so that the short-time environmental vibration bearing capacity of the power vibration absorber can be greatly improved, the power vibration absorber can be effectively protected in short-time environmental vibration, and the application range of the power vibration absorber in the Stirling refrigerator can be expanded.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of an upper cushion rubber pad and a lower cushion rubber pad.
Wherein:
1. The junction of lid and safety cover shell behind the safety cover, 2, the safety cover lid behind 3, go up the cushion rubber pad, 4, the cushion rubber pad down, 5, refrigerator tail end, 6, refrigerator, 7, the junction of safety cover shell and refrigerator tail end, 8, the safety cover shell, 9, dynamic vibration absorber.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
The protection device for the Stirling refrigerator power absorber comprises a protection cover shell 8, a protection cover rear cover 2, an upper buffer rubber pad 3 and a lower buffer rubber pad 4, wherein the protection cover shell 8 is arranged on the outer side of the power absorber 9 and is connected with the tail end 5 of the refrigerator, the protection cover rear cover 2 is arranged at an opening of the upper end of the protection cover shell 8, the upper buffer rubber pad 3 is arranged at the bottom of the protection cover shell 8, and the lower buffer rubber pad 4 is arranged at the top of the tail end 5 of the refrigerator. The dynamic vibration absorber 9 comprises a spring and a mass ring, the dynamic vibration absorber 9 is arranged above the top of the tail end 5 of the refrigerator, and the mass ring moves back and forth along with the spring when in operation. The longitudinal vertical distance between the mass ring of the dynamic vibration absorber 9 and the upper buffer rubber pad 3 and the lower buffer rubber pad 4 is s, s meets the formula F/K < s < delta F/K, wherein F is the maximum load born by the dynamic vibration absorber during working, K is the spring rate of the dynamic vibration absorber, and delta is the design safety coefficient of the spring of the dynamic vibration absorber. The longitudinal vertical distance s between the mass ring of the dynamic vibration absorber 9 and the upper buffer rubber pad 3 and the lower buffer rubber pad 4 is reserved, and the numerical value of the distance s is limited, so that the dynamic vibration absorber 9 can be effectively protected.
Further, the protective cover shell 8 is a hollow cylinder with openings at the upper end and the lower end, and the peripheries of the upper end and the lower end of the hollow cylinder are respectively provided with an installation part.
Further, any connection mode can be adopted between the protective cover shell 8 and the tail end 5 of the refrigerator. Preferably, the protective cover shell 8 is welded or screwed to the refrigerator end 5. As shown in fig. 1, in the present embodiment, at the connection 7 of the protective cover housing and the refrigerator tail end, the protective cover housing 8 is screwed to the refrigerator tail end 5.
Further, any connection mode can be adopted between the protective cover rear cover 2 and the protective cover shell 8. Preferably, the protective cover rear cover 2 is welded or screwed to the protective cover housing 8. When in installation, the protective cover rear cover 2 is firstly installed on the protective cover shell 8, and then the protective cover rear cover and the protective cover are covered on the outer side of the power vibration absorber 9 and then are connected with the tail end 5 of the refrigerator. As shown in fig. 1, in the present embodiment, the connection 1 between the rear cover of the protective cover and the protective cover case is formed by screwing the rear cover 2 of the protective cover to the protective cover case 8.
Further, the outer shape, structural style and material of the upper cushion rubber pad 3 and the lower cushion rubber pad 4 are not limited, and any rubber material may be used as long as it can play a role in cushion. Preferably, the upper cushion rubber pad 3 and the lower cushion rubber pad 4 are both annular, the annular design is mainly determined by the appearance structures of the expander and the damper, and the annular processing is simple.
In summary, the protective cover shell 8 and the protective cover rear cover 2 are arranged on the periphery of the power vibration absorber 9, the buffer rubber pad is arranged between the power vibration absorber 9 and the protective cover rear cover 2 and between the power vibration absorber 9 and the tail end 5 of the refrigerator, and meanwhile, the distance between the buffer rubber pad and the mass ring of the power vibration absorber is designed, so that the short-time environmental vibration bearing capacity of the power vibration absorber can be greatly improved, the power vibration absorber can be effectively protected in short-time environmental vibration, and the application range of the power vibration absorber in the Stirling refrigerator can be expanded.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (3)
1. A protection device for stirling refrigerator power absorber, its characterized in that: the device comprises a protective cover shell, a protective cover rear cover, an upper buffer rubber pad and a lower buffer rubber pad, wherein the protective cover shell is covered on the outer side of a power vibration absorber and is connected with the tail end of a refrigerator; the dynamic vibration absorber comprises a spring and a mass ring; the quality ring, the upper buffer rubber pad and the lower buffer rubber pad are all positioned in the protective cover shell; the method comprises the steps that the longitudinal vertical distance between a mass ring of a power vibration absorber and an upper buffer rubber pad and a lower buffer rubber pad is s, s meets the formula F/K < s < delta F/K, wherein F is the maximum load born by the power vibration absorber during working, K is the spring stiffness of the power vibration absorber, and delta is the design safety coefficient of the spring of the power vibration absorber; the protective cover shell is welded or screwed on the tail end of the refrigerator; the protective cover rear cover is welded or screwed on the protective cover shell.
2. A protector for a stirling cooler power absorber as claimed in claim 1 wherein: the protective cover shell is a hollow cylinder with openings at the upper end and the lower end, and the peripheries of the upper end and the lower end of the hollow cylinder are respectively provided with a mounting part.
3. A protector for a stirling cooler power absorber as claimed in claim 1 wherein: the upper buffer rubber pad and the lower buffer rubber pad are both annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810448924.6A CN108534383B (en) | 2018-05-11 | 2018-05-11 | Protection device for power vibration absorber of Stirling refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810448924.6A CN108534383B (en) | 2018-05-11 | 2018-05-11 | Protection device for power vibration absorber of Stirling refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108534383A CN108534383A (en) | 2018-09-14 |
| CN108534383B true CN108534383B (en) | 2024-05-10 |
Family
ID=63476955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810448924.6A Active CN108534383B (en) | 2018-05-11 | 2018-05-11 | Protection device for power vibration absorber of Stirling refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108534383B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810894B (en) * | 2022-03-24 | 2024-05-10 | 中国电子科技集团公司第十六研究所 | Magnetic damping vibration absorbing device |
| CN114810937A (en) * | 2022-03-25 | 2022-07-29 | 昆明物理研究所 | Vibration isolator for single-piston linear compressor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06137698A (en) * | 1992-10-27 | 1994-05-20 | Daikin Ind Ltd | Damping device for stirling refrigerator |
| JPH07198218A (en) * | 1993-12-28 | 1995-08-01 | Sanyo Electric Co Ltd | Free piston type thermal gas engine |
| KR20010083613A (en) * | 2000-02-17 | 2001-09-01 | 구자홍 | Pulse tube refrigerator |
| JP2006046419A (en) * | 2004-08-02 | 2006-02-16 | Sharp Corp | Vibration suppressing device and stirling engine equipped therewith |
| CN103245121A (en) * | 2013-04-26 | 2013-08-14 | 中国科学院上海技术物理研究所 | Cold-end flexible cold chain structure of coaxial pulse tube refrigerator and manufacturing method |
| CN203868209U (en) * | 2014-05-04 | 2014-10-08 | 中国电子科技集团公司第十六研究所 | Dynamic vibration absorber for Stirling cryocooler |
| CN107131247A (en) * | 2017-06-27 | 2017-09-05 | 嘉善凯达纺织有限公司 | A kind of damping frame of textile machine |
| CN208365858U (en) * | 2018-05-11 | 2019-01-11 | 中国电子科技集团公司第十六研究所 | A kind of protective device for sterlin refrigerator dynamic vibration absorber |
-
2018
- 2018-05-11 CN CN201810448924.6A patent/CN108534383B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06137698A (en) * | 1992-10-27 | 1994-05-20 | Daikin Ind Ltd | Damping device for stirling refrigerator |
| JPH07198218A (en) * | 1993-12-28 | 1995-08-01 | Sanyo Electric Co Ltd | Free piston type thermal gas engine |
| KR20010083613A (en) * | 2000-02-17 | 2001-09-01 | 구자홍 | Pulse tube refrigerator |
| JP2006046419A (en) * | 2004-08-02 | 2006-02-16 | Sharp Corp | Vibration suppressing device and stirling engine equipped therewith |
| CN103245121A (en) * | 2013-04-26 | 2013-08-14 | 中国科学院上海技术物理研究所 | Cold-end flexible cold chain structure of coaxial pulse tube refrigerator and manufacturing method |
| CN203868209U (en) * | 2014-05-04 | 2014-10-08 | 中国电子科技集团公司第十六研究所 | Dynamic vibration absorber for Stirling cryocooler |
| CN107131247A (en) * | 2017-06-27 | 2017-09-05 | 嘉善凯达纺织有限公司 | A kind of damping frame of textile machine |
| CN208365858U (en) * | 2018-05-11 | 2019-01-11 | 中国电子科技集团公司第十六研究所 | A kind of protective device for sterlin refrigerator dynamic vibration absorber |
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| Publication number | Publication date |
|---|---|
| CN108534383A (en) | 2018-09-14 |
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