CN101852506A - Implementation method of pulse tube refrigerator capable of being installed and used at any angle, and device thereof - Google Patents
Implementation method of pulse tube refrigerator capable of being installed and used at any angle, and device thereof Download PDFInfo
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- CN101852506A CN101852506A CN201010173173A CN201010173173A CN101852506A CN 101852506 A CN101852506 A CN 101852506A CN 201010173173 A CN201010173173 A CN 201010173173A CN 201010173173 A CN201010173173 A CN 201010173173A CN 101852506 A CN101852506 A CN 101852506A
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- vascular
- regenerator
- heat exchanger
- valve
- end heat
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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
- F25B2309/1414—Pulse-tube cycles characterised by pulse tube details
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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
- F25B2309/1424—Pulse tubes with basic schematic including an orifice and a reservoir
- F25B2309/14241—Pulse tubes with basic schematic including an orifice reservoir multiple inlet pulse tube
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to an implementation method of a pulse tube refrigerator capable of being installed and used at any angle, and a device thereof, adopting a spiral pulse tube to replace a straight-tube-shaped pulse tube. The device matched with the implementation method comprises a pressure wave generating device (1), a regenerator hot end heat exchanger (6), a regenerator (7), a cold end heat exchanger (8), a two-way air inlet valve (11), an ostiole valve (12) and a gas reservoir (13), wherein the pressure wave generating device (1) is connected with the regenerator hot end heat exchanger (6) and one end of the two-way air inlet valve (11); the regenerator hot end heat exchanger (6) is connected with one end of the regenerator (7), and the other end of the regenerator (7) is connected with the cold end heat exchanger (8); the other end of the two-way air inlet valve (11) and one end of the ostiole valve (12) are connected with a pulse tube hot end heat exchanger (10); the other end of the ostiole valve (12) is connected with the gas reservoir (13); and the invention is characterized in that the spiral pulse tube (9) is connected between the pulse tube hot end heat exchanger (10) and the cold end heat exchanger (8). The invention has simple structure, is easy to implement, and can be installed and used at any angle.
Description
Technical field
The present invention relates to a kind of refrigeration machine, especially a kind of vascular refrigerator, specifically a kind of implementation method and device of the vascular refrigerator that can arbitrarily angledly install and use.
Background technology
At present, what the Cryo Refrigerator great majority that are extensive use of in systems such as nuclear magnetic resonance and cryogenic pump adopted is the G-M refrigeration machine of cylinder piston structure, because this refrigeration machine is very high to the requirement on machining accuracy of its cylinder and piston, and moving component is arranged at low temperatures, make it in difficulty of processing, manufacturing cost and the very big problem of existence on service life.1963, the Gifford of the U.S. and Longsworth have proposed the vascular refrigerator of cold junction movement-less part, make increase greatly its service life, simultaneously, on difficulty of processing and manufacturing cost, also be better than the G-M refrigeration machine greatly, experiencing pinhole type, the bidirection air intake type, four valve types are after the multiple versions such as active air reservoir type, at present, the performance of the G-M type vascular refrigerator of the cold junction movement-less part of low running frequency constantly levels off to the G-M refrigeration machine of cylinder piston structure.Simultaneously, because the G-M type vascular refrigerator of cold junction movement-less part has plurality of advantages, in many application scenarios, replace the G-M refrigeration machine of cylinder piston structure just gradually.On arrangement form, G-M type vascular refrigerator mainly is a U type arrangement form (as Fig. 1) at present, wherein vascular is the straight tube of a hollow, utilize its gas inside piston can realize the effect of actual piston, yet, when refrigeration machine is in obliquity, gravity can make gas generation convection current in the vascular, thereby heat is passed to low temperature from high temperature, increases the chiller heat load, cause the refrigeration machine mis-behave serious.Fig. 2 solid line partly is depicted as the battery of tests result of the refrigerating capacity of single-stage pulse tube refrigerator when 77K with the angle of inclination, as can be seen the refrigeration machine poor performance during horizontal level.Directional problems when moving in order to solve vascular refrigerator, common way are to improve its running frequency, yet high running frequency can make the regenerator effectiveness of regenerator reduce, thereby does not reach lower cryogenic temperature.Therefore, when keeping vascular refrigerator to have low cryogenic temperature, the directional problems when solving its operation is the key that vascular refrigerator obtains further extensive use.
Summary of the invention
The objective of the invention is needs vertical the installation at existing straight tube vascular refrigerator, and the problem that its performance sharply descends with the variation of straight tube vascular setting angle is invented a kind of method and device thereof that can make vascular refrigerator also still can keep superior performance in arbitrarily angled installation.
One of technical scheme of the present invention is:
A kind of implementation method of the pulse tube refrigeration that can arbitrarily angledly install and use is characterized in that adopting the spirality vascular to replace straight tube shape vascular, and this spirality vascular and regenerator are arranged in parallel or are wrapped on the regenerator.
Two of technical scheme of the present invention is:
A kind of spiral vascular refrigerator that can arbitrarily angledly install and use, it comprises pressure wave generator 1, regenerator hot end heat exchanger 6, regenerator 7, cool end heat exchanger 8, bidirection air intake valve 11, aperture valve 12 and air reservoir 13, pressure wave generator 1 links to each other with an end of regenerator hot end heat exchanger 6 and bidirection air intake valve 11, regenerator hot end heat exchanger 6 links to each other with an end of regenerator 7, the other end of regenerator 7 links to each other with cool end heat exchanger 8, one end of the other end of bidirection air intake valve 11 and aperture valve 12 all links to each other with vascular hot-side heat exchanger 10, the other end of aperture valve 12 links to each other with air reservoir 13, it is characterized in that being connected with spiral vascular 9 between vascular hot-side heat exchanger 10 and cool end heat exchanger 8.
Described spiral vascular 9 and regenerator 7 are arranged in juxtaposition or described spiral vascular 9 is wrapped on the described regenerator 7.
Described spiral vascular 9 is the spiralling stainless steel empty pipe of single or many parallel connections.The cold junction of spiral vascular 9 links to each other with the cold junction of regenerator 7 by cool end heat exchanger 8.
Described pressure wave generator 1 includes valve compressor 2 and distributing valve 3, and distributing valve 3 comprises two by- pass valve controls 4,5, valve compressor 2 is arranged by two by- pass valve controls 4,5 link to each other with regenerator hot end heat exchanger 6, and two by- pass valve controls 4,5 are magnetic valve or rotary valve.
Described pressure wave generator 1 comprises valveless compressor 14, and the output of valveless compressor 14 directly links to each other with regenerator hot end heat exchanger 6.
Described regenerator 7 is a stainless steel material, is filled with mesh-like filler, ball filler or magnetic fillers in the regenerator 7.
Described spiral vascular 9 should select for use diameter less, the hollow pipe that length is long.
Beneficial effect of the present invention:
The present invention adopts the spiral vascular to replace original straight shape vascular, need to guarantee to have enough expansion spaces, therefore, the spiral vascular selects for use diameter less, length longer pipe, make full use of spiral vascular minor diameter, and the design feature of spiral, when refrigeration machine inclination work, can produce following advantage: original straight shape vascular is when inclination work, the gas micelle since gravity and thrust not on same straight line, can produce circulatory motion, diameter is big more, and it is obvious more to move, be more prone to take the heat of high temperature to the low temperature place, under the acting in conjunction of the unidirectional circulatory motion of numerous gas micelle, the heat in hot junction is delivered to cold junction, has increased the thermic load of cold junction, make actual refrigerating capacity reduce, refrigeration performance worsens, and simultaneously, vascular internal gas piston is destroyed, reduce the efficient that the vascular internal insulation expands, also worsened refrigeration performance.And adopt spiral vascular of the present invention, the feature limits of its little caliber the generation of circulatory motion, simultaneously, when tilting, the circulatory motion that adjacent locations produces in the vascular pipeline is rightabout always, thereby suppresses the transmission of heat, greatly reduces the deterioration of refrigeration machine performance.Fig. 2 dotted portion is depicted as the battery of tests result of the refrigerating capacity of single-stage pulse tube refrigerator when 77K of employing spiral vascular with the angle of inclination, partly compares with solid line, and operation angle is reduced because of adopting the spiral vascular greatly to the deterioration degree of refrigeration performance.
The present invention also can be developed into two-stage or multistage cryogenic vacuum pumping system, G-M refrigeration machine in the existing cryogenic vacuum pumps directly can be replaced with the spiral vascular refrigerator, when guaranteeing enough low cryogenic temperature, can satisfy the requirement of various installation directions again, make the longer service life of cryogenic vacuum pumps.
For multistage vascular refrigerator, can realize installing and using at any angle by adopting a plurality of spiral vasculars to replace original a plurality of straight shape vascular.
Method and structure of the present invention is all very simple, by changing the version of vascular, has fundamentally changed the scope of application of vascular refrigerator, has expanded the application of vascular refrigerator greatly, makes it can be applied to various required complicated occasions.
The present invention can suppress the deterioration of the refrigeration performance that vascular refrigerator produces effectively when incline direction is worked, it is simple to have processing, and cost is low, and the life-span is long, and characteristics such as compact conformation have further been widened the application of vascular refrigerator.
Description of drawings
Fig. 1 is the structural principle schematic diagram of existing vascular refrigerator.
Fig. 2 is that existing straight pipe type vascular refrigerator and the refrigeration performance of spiral vascular refrigerator of the present invention when different heeling condition change schematic diagram.
Fig. 3 is the theory of constitution schematic diagram that best embodies the spiral vascular refrigerator of design concept of the present invention and thinking.
Fig. 4 is the another kind of equivalent structure schematic diagram of vascular refrigerator shown in Figure 3.
Fig. 5 is the structural representation that utilizes multistage (two-stage) vascular refrigerator of principle design of the present invention.
Fig. 6 is a concrete application example of multistage vascular refrigerator shown in Figure 5.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one.
As shown in Figure 3.
A kind of implementation method of the pulse tube refrigeration that can arbitrarily angledly install and use, it replaces existing straight tube shape vascular to carry out work by the spiral-shaped spiral vascular that turns to that adopts little caliber, big length, and this spirality vascular and regenerator are arranged in parallel or are wrapped on the regenerator.It utilizes the generation of the feature limits circulatory motion of little caliber, simultaneously, when tilting, the circulatory motion that adjacent locations produces in the vascular pipeline is rightabout always, thereby suppress the transmission of heat, greatly reduce the deterioration of refrigeration machine performance, even when horizontal positioned, the decline of its refrigerating efficiency is also very limited, as shown in phantom in Figure 2.
Embodiment two.
Shown in Fig. 3,4.
A kind of single step helical vascular refrigerator, it comprises pressure wave generator 1, regenerator hot end heat exchanger 6, regenerator 7, cool end heat exchanger 8, spiral vascular 9, vascular hot-side heat exchanger 10, aperture valve 12, air reservoir 13, and the bidirection air intake valve 11 that links to each other with regenerator hot end heat exchanger 6 with vascular hot-side heat exchanger 10.Spiral vascular 9 and regenerator 7 in Fig. 3 are arranged in juxtaposition, spiral vascular 9 among Fig. 4 is wrapped in regenerator 7 outsides, pressure wave generator 1 links to each other with regenerator hot end heat exchanger 6 and bidirection air intake valve 11, aperture valve 12 links to each other with vascular hot-side heat exchanger 10 and bidirection air intake valve 11, and air reservoir 13 links to each other with aperture valve 12.
Spiral vascular 9 is spiralling vasculars, the cold junction of spiral vascular 9 links to each other with the cold junction of regenerator 7 by cool end heat exchanger 8, spiral vascular 9 and regenerator 7 are stainless steel material, and the filler of regenerator 7 is web material, spheroidal material or magnetic fillers.
Embodiment three.
As shown in Figure 5.
A kind of compaction type two-stage spiral vascular refrigerator, it comprises: pressure wave generator 1, one-level regenerator hot end heat exchanger 6, one-level regenerator 7, one-level cool end heat exchanger 8, one-level spiral vascular 9, one-level vascular hot-side heat exchanger 10, one-level aperture valve 12, one-level air reservoir 13, and the one-level bidirection air intake valve 11 that links to each other with one-level regenerator hot end heat exchanger 6 with one-level vascular hot-side heat exchanger 10, secondary regenerator 15, secondary cool end heat exchanger 16, deuterostrophies vascular 17, secondary vascular hot-side heat exchanger 18, secondary aperture valve 20, secondary air reservoir 21, and the secondary bidirection air intake valve 19 that links to each other with one-level regenerator hot end heat exchanger 6 with secondary vascular hot-side heat exchanger 18.In this embodiment, one-level spiral vascular 9 is wrapped in one-level regenerator 7 outsides, deuterostrophies vascular 17 is wrapped in the secondary regenerator 15 and one-level regenerator 7 outsides, pressure wave generator 1 links to each other with one-level regenerator hot end heat exchanger 6, one-level bidirection air intake valve 11 and secondary bidirection air intake valve 19, one-level aperture valve 12 links to each other with one-level vascular hot-side heat exchanger 10 and one-level bidirection air intake valve 11, and one-level air reservoir 13 links to each other with one-level aperture valve 12; Secondary aperture valve 20 links to each other with secondary vascular hot-side heat exchanger 18 and secondary bidirection air intake valve 19, and secondary air reservoir 21 links to each other with secondary aperture valve 20.
The cold junction of one-level spiral vascular 9 links to each other with the cold junction of one-level regenerator 7 and the hot junction of secondary regenerator 15 by one-level cool end heat exchanger 8, and the filler of one-level regenerator 7 is web material or spheroidal material.The cold junction of deuterostrophies vascular 17 links to each other with the cold junction of secondary regenerator 15 by secondary cool end heat exchanger 16, and the filler of secondary regenerator 15 is spheroidal material or magnetic fillers.
Embodiment four.
As shown in Figure 6.
A kind of cryogenic pump system of being made up of compaction type two-stage spiral vascular refrigerator, this cryogenic pump system comprise two-stage close-coupled spiral vascular refrigerator (describing in detail), one-level baffle plate 22 in embodiment three, secondary baffle plate 23, radiation shield 24, vacuum (-tight) housing 25, adpting flange 26.One-level baffle plate 22 is installed in the radiation shield 24, radiation shield 24 is connected on the one-level cool end heat exchanger 8, provide low temperature by one-level cool end heat exchanger 8 for radiation shield 24 and one-level baffle plate 22, radiation shield 24 can reduce the leakage heat of secondary cool end heat exchanger 16, and one-level baffle plate 22 is used for chilled water molecule and carbon dioxide equimolecular; Secondary baffle plate 23 is connected on the secondary cool end heat exchanger 16, utilizes temperature cryogenic nitrogen, oxygen, the argon equimolecular of secondary cool end heat exchanger 16, on secondary baffle plate 23 active carbon is housed, main absorption hydrogen, helium, neon equimolecular; Vacuum (-tight) housing 25 is connected on one-level regenerator hot end heat exchanger 6, one-level vascular hot-side heat exchanger 10 and the secondary vascular hot-side heat exchanger 18, by adpting flange 26, and is linked to each other by the pump object.
Also can develop the cryogenic system of various use spiral vascular refrigerators according to the present invention, wherein the spiral vascular refrigerator can satisfy the requirement of various installation directions again when guaranteeing that enough low cryogenic temperature is arranged, and improves the range of application of vascular refrigerator greatly.
Operation principle of the present invention is:
Adopt the spiral vascular to replace original straight shape vascular among the present invention, the vascular of selecting for use should guarantee enough expansion spaces, therefore, selects for use diameter less for the spiral vascular, length longer pipe.When straight shape vascular refrigerator inclination work, gas micelle in the straight shape vascular originally since gravity and thrust not on same straight line, can produce circulatory motion, diameter is big more, it is obvious more to move, therefore, the heat with high temperature takes the low temperature place to easily, under the unidirectional circulatory motion effect of numerous gas micelle, the heat in hot junction is delivered to cold junction, increased the thermic load of cold junction, made actual refrigerating capacity reduce, refrigeration performance worsens, simultaneously, vascular internal gas piston is destroyed, has reduced the efficient that the vascular internal insulation expands, and has also worsened refrigeration performance.And spiral vascular refrigerator of the present invention since the feature limits of its little caliber the generation of circulatory motion, simultaneously, when tilting, the circulatory motion that adjacent locations produces in the vascular pipeline is rightabout always, thereby suppress the transmission of heat, make the refrigeration machine angle of inclination dwindle greatly the deterioration degree of refrigeration performance.
Although more than combine the given specific embodiment of specification the present invention is described in detail, the present invention should not be limited to above-mentioned specific embodiment or given feature compound mode.Under the prerequisite that does not exceed essence of the present invention, can design the enforcement structure and the arrangement form of various equivalences voluntarily, and those of ordinary skills also can finish corresponding modification and improvement in accordance with the teachings of the present invention.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (7)
1. the implementation method of the vascular refrigerator that can arbitrarily angledly install and use is characterized in that adopting the spirality vascular to replace straight tube shape vascular, and this spirality vascular and regenerator are arranged in parallel or are wrapped on the regenerator.
2. the spiral vascular refrigerator that can arbitrarily angledly install and use, it comprises pressure wave generator (1), regenerator hot end heat exchanger (6), regenerator (7), cool end heat exchanger (8), bidirection air intake valve (11), little ports valve (12) and air reservoir (13), pressure wave generator (1) links to each other with an end of regenerator hot end heat exchanger (6) and bidirection air intake valve (11), regenerator hot end heat exchanger (6) links to each other with an end of regenerator (7), the other end of regenerator (7) links to each other with cool end heat exchanger (8), one end of the other end of bidirection air intake valve (11) and little ports valve (12) all links to each other with vascular hot-side heat exchanger (10), the other end of little ports valve (12) links to each other with air reservoir (13), it is characterized in that being connected with spiral vascular (9) between vascular hot-side heat exchanger (10) and cool end heat exchanger (8).
3. the spiral vascular refrigerator that can arbitrarily angledly install and use according to claim 2 is characterized in that described spiral vascular (9) and regenerator (7) are arranged in juxtaposition or described spiral vascular (9) is wrapped on the described regenerator (7).
4. according to claim 2 or the 3 described spiral vascular refrigerators that can arbitrarily angledly install and use, it is characterized in that the spiralling stainless steel empty pipe of described spiral vascular (9) for single or many parallel connections.
5. according to claim 2, the 3 or 4 described spiral vascular refrigerators that can arbitrarily angledly install and use, it is characterized in that described pressure wave generator (1) includes valve compressor (2) and distributing valve (3), distributing valve (3) comprises two by-pass valve controls (4,5), valve compressor (2) is arranged by two by-pass valve controls (4,5) link to each other with regenerator hot end heat exchanger (6), two by-pass valve controls (4,5) are magnetic valve or rotary valve.
6. according to claim 2, the 3 or 4 described spiral vascular refrigerators that can arbitrarily angledly install and use, it is characterized in that described pressure wave generator (1) comprises valveless compressor (14), the output of valveless compressor (14) directly links to each other with regenerator hot end heat exchanger (6).
7. according to claim 2,3,4, the 5 or 6 described spiral vascular refrigerators that can arbitrarily angledly install and use, it is characterized in that described regenerator (7) is a stainless steel material, regenerator is filled with mesh-like filler, ball filler or magnetic fillers in (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010173173A CN101852506A (en) | 2010-05-14 | 2010-05-14 | Implementation method of pulse tube refrigerator capable of being installed and used at any angle, and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010173173A CN101852506A (en) | 2010-05-14 | 2010-05-14 | Implementation method of pulse tube refrigerator capable of being installed and used at any angle, and device thereof |
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| CN101852506A true CN101852506A (en) | 2010-10-06 |
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| CN201010173173A Pending CN101852506A (en) | 2010-05-14 | 2010-05-14 | Implementation method of pulse tube refrigerator capable of being installed and used at any angle, and device thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032985A (en) * | 2011-09-28 | 2013-04-10 | 住友重机械工业株式会社 | Cryogenic refrigerator |
| CN103206802A (en) * | 2013-02-25 | 2013-07-17 | 朱绍伟 | Pulse tube expansion machine |
| CN103216966A (en) * | 2013-04-25 | 2013-07-24 | 浙江大学 | Free piston type pulse tube refrigerator |
| GB2510912A (en) * | 2013-02-19 | 2014-08-20 | Hymatic Eng Co Ltd | A pulse tube refrigerator/cryocooler apparatus |
| CN104296411A (en) * | 2014-10-08 | 2015-01-21 | 南京航空航天大学 | 4K lower-temperature pulse tube refrigerator with centrifugal spiral heat regenerator and method |
| CN110959094A (en) * | 2017-08-01 | 2020-04-03 | 住友重机械工业株式会社 | Ultra-low temperature refrigerating device and temperature rising method of pulse tube refrigerator |
-
2010
- 2010-05-14 CN CN201010173173A patent/CN101852506A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032985A (en) * | 2011-09-28 | 2013-04-10 | 住友重机械工业株式会社 | Cryogenic refrigerator |
| CN103032985B (en) * | 2011-09-28 | 2015-05-20 | 住友重机械工业株式会社 | Cryogenic refrigerator |
| GB2510912A (en) * | 2013-02-19 | 2014-08-20 | Hymatic Eng Co Ltd | A pulse tube refrigerator/cryocooler apparatus |
| US9909787B2 (en) | 2013-02-19 | 2018-03-06 | The Hymatic Engineering Company Limited | Pulse tube refrigerator/cryocooler apparatus |
| GB2510912B (en) * | 2013-02-19 | 2018-09-26 | The Hymatic Engineering Company Ltd | A pulse tube refrigerator / cryocooler apparatus |
| CN103206802A (en) * | 2013-02-25 | 2013-07-17 | 朱绍伟 | Pulse tube expansion machine |
| CN103206802B (en) * | 2013-02-25 | 2018-03-27 | 朱绍伟 | A kind of pulse tube expander |
| CN103216966A (en) * | 2013-04-25 | 2013-07-24 | 浙江大学 | Free piston type pulse tube refrigerator |
| CN104296411A (en) * | 2014-10-08 | 2015-01-21 | 南京航空航天大学 | 4K lower-temperature pulse tube refrigerator with centrifugal spiral heat regenerator and method |
| CN110959094A (en) * | 2017-08-01 | 2020-04-03 | 住友重机械工业株式会社 | Ultra-low temperature refrigerating device and temperature rising method of pulse tube refrigerator |
| CN110959094B (en) * | 2017-08-01 | 2021-10-29 | 住友重机械工业株式会社 | Ultra-low temperature refrigerating device and temperature rising method of pulse tube refrigerator |
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Application publication date: 20101006 |