CN1150639A - Coaxial vessel refrigerator - Google Patents
Coaxial vessel refrigerator Download PDFInfo
- Publication number
- CN1150639A CN1150639A CN 95118296 CN95118296A CN1150639A CN 1150639 A CN1150639 A CN 1150639A CN 95118296 CN95118296 CN 95118296 CN 95118296 A CN95118296 A CN 95118296A CN 1150639 A CN1150639 A CN 1150639A
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- CN
- China
- Prior art keywords
- regenerator
- pulse tube
- refrigeration machine
- insulation layer
- thermal insulation
- 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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- 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
- F25B9/145—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 pulse-tube cycle
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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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1406—Pulse-tube cycles with pulse tube in co-axial or concentric geometrical arrangements
Abstract
The present invention discloses a kind of coaxial type pulse tube refrigerator. It is characterized by that a heat-insulating layer is placed between the pulse tube and heat-regenerator sleeve-connected with the former, and the cold end of the pulse tube and the heat-insulating layer outside the tube are extended from the cold end of the heat-regenerator, and the pulse tube and the cold end orifice of the heat-regenerator are covered with cold end cover with high thermal conductivity, and the cold end cover edge and the outer wall edge of the cold end of the heat-regenerator are seal-connected so as to form the high-efficiency cold end heat-exchanger of the refrigerator. Said invention possesses the advantages of raising regeneration efficiency and reducing cold end temp..
Description
The present invention relates to a kind of co-axial pulse tube refrigerator.
In the development of existing co-axial pulse tube refrigerator (its regenerator is coaxial to be set in outside the pulse tube), people always the refrigeration performance of constantly seeking to improve it with further realize the microminiature size, wherein have many improvement projects to relate to the structure of pulse tube and regenerator and preparation thereof.Chinese patent CN2062805U is in design a kind of " coaxial impulse pipe refrigerating machine of band aperture and air reservoir ", proposition is in order to reduce heat transfer, improve refrigerating efficiency, adopt the material of lower thermal conductivity to make pulse tube, make between pulse tube and regenerator and set up thermal insulation layer.The superfine people of king is at " Miniaturization of a co-axialpulse tube cooler with linear motor drive compressor " (Cryogenic Engineering Conference and InterationalCryogenic Materials Conference, Columbus, USA, July, 1995) delivered an experimental result in the literary composition, they are when making pulse tube with two kinds of different heat-conductivity materials of stainless steel and nylon, under all identical situation of other conditions, as seen the latter can reach lower cold junction temperature, sets up the validity of thermal insulation layer between the pulse tube of coaxial pulse-tube refrigerator and regenerator.Yet, except the wall heat transfer factor of pulse tube, for existing coaxial pulse-tube refrigerator with pulse tube and the isometric structure of regenerator, should be taken into account that also pulse tube and regenerator are in the heat transfer factor that produces under the same cold junction situation, the performance that this heat transfer factor is restricting refrigeration machine too improves.Chinese patent CN2094008U has proposed to adopt pulse tube cold junction and hot junction all to stretch out in the not isometric improvement structure of formation outside the regenerator at this defective.According to the numerical simulation result of pulse tube of delivering in the superfine humanity of aforementioned king and regenerator Temperature Distribution, particularly remarkable in the cold junction heat transfer phenomenon of isometric structure.Thereby the pulse tube cold junction is stretched out just have more meaning outside the regenerator.Yet, meanwhile, but Chinese patent CN2094008U thinks that the not isometric structure of this patent " makes the temperature of regenerator from the hot junction to cold junction all than the mean temperature height of gas in the pulse tube of co-located ", and propose to make " filler of regenerator and the outer wall of vascular are close to " (this patent right requires 1 characteristic), allow " heat can pass to vascular from regenerator ", just will promote the tube wall of pulse tube to conduct heat.Obviously, show according to aforesaid experimental result, this heat transfer measure, not only be helpless to reduce cold junction temperature and improve refrigeration performance, and be obviously harmful.
The objective of the invention is when drawing above-mentioned prior art effective experience, to overcome their defective, seek the optimum structure and the configuration of pulse tube and regenerator, design a kind of coupling heat transfer of avoiding as far as possible between pulse tube and regenerator, producing, set up suitable temperature coupling between the two, thereby realize the co-axial pulse tube refrigerator of highly effective refrigeration.
The technical measures that realize the object of the invention are, between the pulse tube of co-axial pulse tube refrigerator of the present invention and the coaxial regenerator that is set in outside its pipe, be provided with thermal insulation layer, the cold junction of pulse tube and thermal insulation layer on every side thereof stretch out outside the cold junction of regenerator, a cold junction cover cap with high heat conductance with the equal cover cap of cold junction port of the cold junction port of pulse tube and regenerator wherein, the edge sealing-in of the edge of this cover cap and regenerator cold junction outer wall is formed cool end heat exchanger with this cold junction cover cap and the thermal insulation layer wall that stretches out regenerator.
Because the present invention is between the pulse tube and regenerator of coaxial setting, no matter be between tube wall or at cold junction, all take to avoid the effective measures of conducting heat, thereby had the good effect that improves refrigerating efficiency and reduce cold junction temperature.
Below in conjunction with accompanying drawing and embodiment co-axial pulse tube refrigerator of the present invention is described in detail.
Fig. 1 implements structural representation of the present invention for first embodiment of the present invention in the co-axial pulse tube refrigerator of band aperture and air reservoir.
Fig. 2 is three kinds of embodiment schematic diagrames of cool end heat exchanger cross-section structure among the present invention, a) be the silk screen interlayer wherein, b) is with the metal tube and ring of joint-cutting radially, c) is narrow gap.
Fig. 3 implements structural representation of the present invention for second embodiment of the present invention in the co-axial pulse tube refrigerator of multi-channel shunt.
Fig. 4 implements structural representation of the present invention for the 3rd embodiment of the present invention in the double-piston co-axial pulse tube refrigerator.
Fig. 5 implements structural representation of the present invention for the 4th embodiment of the present invention in four valve co-axial pulse tube refrigerators.
The co-axial pulse tube refrigerator of first embodiment band of the present invention shown in Figure 1 aperture 1 and air reservoir 2, it is communicated with the coaxial hot junction that is set in the regenerator 6 outside the pulse tube 5 by the cooler 4 of a compressor 3 through outlet, between pulse tube 5 and regenerator 6, be provided with the ad hoc thermal insulation layer 7 that constitutes by low thermal conductivity material, pulse tube 5 stretches out outside the regenerator 6 at their cold junction with its thermal insulation layer 7 on every side, and this part pulse tube 5 that stretches out outside the regenerator 6 is lived with thermal insulation layer 7 cover caps by the cold junction cover cap 8 of a high heat conductance, seal at the edge of the edge of cold junction cover cap 8 and regenerator 6 cold junction outer walls, forms cool end heat exchanger 9 with this cold junction cover cap 8 and thermal insulation layer 7 walls that stretch out outside the regenerator 6.Establish a radiator 10 in pulse tube 5 hot junctions, it is communicated with an air reservoir 2, and pulse tube 5 hot-side heat dissipation devices 10 are communicated with the cooler 4 of compressor 3 outlets by a bidirection air intake valve 11 through aperture 1.The low heat conductivity thermal insulation layer 7 that between pulse tube 5 and regenerator 6, is provided with, except the ad hoc thermal insulation layer of above-mentioned one deck that constitutes by low thermal conductivity material, also can be the ad hoc vacuum heat-insulating layer of one deck, can also be the thermal insulation layer with 5 tube walls of the pulse tube with effect of heat insulation self formation of low Heat Conduction Material processing.
Formed cool end heat exchanger 9 with cold junction cover cap 8 and thermal insulation layer 7 walls that stretch out regenerator 6, Fig. 2 illustrates the embodiment of three kinds of sandwich cool end heat exchangers of the present invention's employing, a) be silk screen sandwich wherein, lay woven wire 12 in the interlayer between cold junction cover cap 8 and thermal insulation layer 7 walls, b) in interlayer, being plugged with the metal tube and ring 14 of joint-cutting 13 radially, c) be the space interlayer 15 of 3 millimeters of width less thaies, no any laying in the interlayer 15.
Second embodiment of the present invention shown in Figure 3 implements regenerator of the present invention and pulse tube structure and allocation plan in the coaxial type pulse tube refrigerating machine of multi-channel shunt.The pulse tube 5 of this embodiment and coaxial on every side sheathed regenerator 6 thereof are divided into two sections of thicknesses, the pulse tube 5a of thick section is connected with the end of thin segment pulse tube 5b and thin segment regenerator 6b respectively at same section with the end of the regenerator 6a of thick section, two sections junction is provided with multi-channel shunt element 16, the other end of thick section is the hot junction, the other end of thin end is a cold junction, be provided with thermal insulation layer 7 between the pulse tube 5 that comprises thick section and thin segment and the outer coaxial sheathed regenerator 6 of its pipe, the situation of the structure of cool end heat exchanger 9 and configuration and first embodiment of the present invention is identical, the hot junction of regenerator 6a is communicated with the cooler 4 in a compressor 3 exits, pulse tube 5a establishes in the hot junction radiator 10, be communicated with an air reservoir 2 through an aperture 1, and have a two-way intake valve 11 that the radiator 10 in pulse tube 5a hot junction is communicated with the cooler 4 of compressor 3 outlets.
Fig. 4 illustrates the 3rd embodiment double-piston co-axial pulse tube refrigerator of the present invention, the arranged coaxial of its pulse tube 5 and regenerator 6 and the structure of cool end heat exchanger 9 are all identical with the situation of first embodiment of the present invention, the hot junction of its regenerator 6 is communicated with the cooler 4 in a compressor 3 exits, and 10 in the radiator in pulse tube 5 hot junctions is communicated with a decompressor 17.
Fig. 5 illustrates the 4th embodiment four valve co-axial pulse tube refrigerators of the present invention, the arranged coaxial of its pulse tube 5 and regenerator 6 and the structure of cool end heat exchanger 9 are all identical with the situation of this bright first embodiment, the hot junction one cover bilateral rotary valve 18 of its regenerator 6 is communicated with high-pressure air source 19 and low-pressure gas source 20 respectively, and 10 in the radiator in pulse tube 5 hot junctions passes through an aperture 1 and is communicated with high-pressure air source 19 and low-pressure gas source 20 respectively through another set of bilateral rotary valve 21.
Claims (11)
1, a kind of with the coaxial co-axial pulse tube refrigerator that is set in outside the pulse tube of regenerator, it is characterized in that, described pulse tube with coaxial be set in its pipe outside regenerator between be provided with thermal insulation layer, the cold junction of described pulse tube and the thermal insulation layer that is provided with on every side thereof stretch out outside the cold junction of described regenerator, a cold junction cover cap with high heat conductance with the equal cover cap of cold junction port of the cold junction port of described pulse tube and described regenerator wherein, the cool end heat exchanger of described refrigeration machine is made of in the edge sealing-in of the edge of cold junction cover cap and described regenerator cold junction outer wall cold junction cover cap and the thermal insulation layer wall that stretches out described regenerator.
2, according to the described refrigeration machine of claim 1, it is characterized in that, be laid with woven wire in the interlayer of described cool end heat exchanger between described cold junction cover cap and the described thermal insulation layer wall that stretches out described regenerator.
3, according to the described refrigeration machine of claim 1, it is characterized in that, be plugged with in the interlayer of described cool end heat exchanger between described cold junction cover cap and the described thermal insulation layer wall that stretches out described regenerator with the metal tube and ring of joint-cutting radially.
4, according to the described refrigeration machine of claim 1, it is characterized in that, the interlayer of described cool end heat exchanger between described cold junction cover cap and the described thermal insulation layer wall that stretches out described regenerator be the width of first any laying at 3 millimeters with interior space interlayer.
According to the described refrigeration machine of claim 1, it is characterized in that 5, described is the ad hoc thermal insulation layer of one deck with the low thermal conductivity material formation at described pulse tube with the coaxial thermal insulation layer that is provided with between the outer regenerator of its pipe that is set in.
6, according to the described refrigeration machine of claim 1, it is characterized in that, described between described pulse tube and the coaxial regenerator that is set in outside its pipe the thermal insulation layer that is provided be the ad hoc vacuum heat-insulating layer of one deck.
7, according to the described refrigeration machine of claim 1, it is characterized in that described is the described thermal insulation layer that the heat insulation tube wall of the described pulse tube self processed by low thermal conductivity material forms at described pulse tube with the coaxial thermal insulation layer that is provided with between the outer regenerator of its pipe that is set in.
8, according to the described refrigeration machine of claim 1, it is characterized in that, described refrigeration machine is the co-axial pulse tube refrigerator of band aperture and air reservoir, it is communicated with the described coaxial regenerator hot junction that is set in outside the pulse tube pipe by the cooler of a compressor through the exit, establish a radiator in described pulse tube hot junction, be communicated with an air reservoir through an aperture, and be communicated with the radiator in described pulse tube hot junction and the cooler of compressor outlet by a bidirection air intake valve.
9, according to the described refrigeration machine of claim 8, it is characterized in that, described refrigeration machine is again the coaxial type pulse tube refrigerating machine of multi-channel shunt simultaneously, described pulse tube and coaxial on every side sheathed regenerator thereof are divided into two sections of thicknesses, the pulse tube of thick section is connected with an end of thin segment pulse tube and thin segment regenerator respectively at same section with an end of the regenerator of thick section, two sections junction is provided with the multi-channel shunt element, the other end of thick section is the hot junction, the other end of thin end is a cold junction, comprises that the thick section described pulse tube with thin segment is provided with described thermal insulation layer between the coaxial sheathed regenerator outward with its pipe.
According to the described refrigeration machine of claim 1, it is characterized in that 10, described refrigeration machine is the double-piston co-axial pulse tube refrigerator, the hot junction of described regenerator is communicated with the cooler at a compressor outlet place, and the radiator in described pulse tube hot junction is communicated with a decompressor.
11, according to the described refrigeration machine of claim 1, it is characterized in that, described refrigeration machine is four valve type coaxial pulse-tube refrigerators, the hot junction one cover bilateral rotary valve of described regenerator is communicated with a high-pressure air source and a low-pressure gas source respectively, and the radiator in described pulse tube hot junction then is communicated with a high-pressure air source and a low-pressure gas source respectively through another set of bilateral rotary valve by an aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95118296 CN1074525C (en) | 1995-11-21 | 1995-11-21 | Coaxial vessel refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95118296 CN1074525C (en) | 1995-11-21 | 1995-11-21 | Coaxial vessel refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1150639A true CN1150639A (en) | 1997-05-28 |
| CN1074525C CN1074525C (en) | 2001-11-07 |
Family
ID=5081631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95118296 Expired - Fee Related CN1074525C (en) | 1995-11-21 | 1995-11-21 | Coaxial vessel refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074525C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383470C (en) * | 2006-05-18 | 2008-04-23 | 上海交通大学 | Dual-cooling-head slit-cooling coaxial neamal tube refrigerating machine |
| CN102636074A (en) * | 2012-04-19 | 2012-08-15 | 武汉工程大学 | Pulsating flow generating device and pulsation heat-transfer system |
| CN103868270A (en) * | 2012-12-13 | 2014-06-18 | 中国科学院理化技术研究所 | Multi-way bypass coaxial pulse tube refrigerator capable of solving problem of air leakage of pulse tube connection position |
| CN107091539A (en) * | 2017-06-02 | 2017-08-25 | 中科力函（深圳）低温技术有限公司 | Pulse tube refrigerating machine |
| CN109059330A (en) * | 2018-07-13 | 2018-12-21 | 浙江大学 | A kind of piston phase modulation type vascular refrigerator by spring connect compressor piston |
-
1995
- 1995-11-21 CN CN 95118296 patent/CN1074525C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383470C (en) * | 2006-05-18 | 2008-04-23 | 上海交通大学 | Dual-cooling-head slit-cooling coaxial neamal tube refrigerating machine |
| CN102636074A (en) * | 2012-04-19 | 2012-08-15 | 武汉工程大学 | Pulsating flow generating device and pulsation heat-transfer system |
| CN103868270A (en) * | 2012-12-13 | 2014-06-18 | 中国科学院理化技术研究所 | Multi-way bypass coaxial pulse tube refrigerator capable of solving problem of air leakage of pulse tube connection position |
| CN103868270B (en) * | 2012-12-13 | 2016-02-10 | 中国科学院理化技术研究所 | The multi-channel shunt type coaxial pulse-tube refrigerator of vascular junction leakage problem can be solved |
| CN107091539A (en) * | 2017-06-02 | 2017-08-25 | 中科力函（深圳）低温技术有限公司 | Pulse tube refrigerating machine |
| CN107091539B (en) * | 2017-06-02 | 2020-09-18 | 中科力函（深圳）低温技术有限公司 | Pulse tube refrigerator |
| CN109059330A (en) * | 2018-07-13 | 2018-12-21 | 浙江大学 | A kind of piston phase modulation type vascular refrigerator by spring connect compressor piston |
| CN109059330B (en) * | 2018-07-13 | 2020-08-18 | 浙江大学 | Piston phase modulation type pulse tube refrigerator with piston of compressor connected by spring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1074525C (en) | 2001-11-07 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |