CN104296411A - 4K lower-temperature pulse tube refrigerator with centrifugal spiral heat regenerator and method - Google Patents
4K lower-temperature pulse tube refrigerator with centrifugal spiral heat regenerator and method Download PDFInfo
- Publication number
- CN104296411A CN104296411A CN201410523678.8A CN201410523678A CN104296411A CN 104296411 A CN104296411 A CN 104296411A CN 201410523678 A CN201410523678 A CN 201410523678A CN 104296411 A CN104296411 A CN 104296411A
- Authority
- CN
- China
- Prior art keywords
- grades
- level
- regenerator
- vascular
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to a 4K lower-temperature pulse tube refrigerator with a centrifugal spiral heat regenerator and a method and belongs to the refrigeration technical field. The 4K lower-temperature pulse tube refrigerator with a centrifugal spiral heat regenerator is characterized in that a centrifugal spiral flow channel (5) is added to a temperature area position of a three-stage heat regenerator (13), wherein the temperature area position of a three-stage heat regenerator (13) is lower than 20 K; a hot end of the centrifugal spiral flow channel (5) is connected with a cold end of the three-stage heat regenerator (13); a cold end of the centrifugal spiral flow channel (5) is connected with a first end of a three-stage cold-end heat exchanger (18); the properties of the liquid helium which works in the temperature area can be close to those of the ideal gas through the centrifugal spiral flow channel (5). Accordingly, the refrigeration efficiency of the lower-temperature regenerative refrigerator can be improved.
Description
Technical field
The present invention relates to a kind of 4K warm area low temperature stirling-type vascular refrigerator adopting centrifugal screw type regenerator.
Background technology
Low temperature back-heating type vascular refrigerator is by compressor, and regenerator, cool end heat exchanger, hot end heat exchanger, heat bridge, inertia tube, the parts such as air reservoir form.Vascular refrigerator structure is simple, and it is convenient to control, and cold junction does not have moving component, and reliability is high, long working life, and cryogenic temperature is low.Because its advantage, low temperature back-heating type vascular refrigerator became study hotspot at space industry in recent years.
Common low temperature back-heating type vascular refrigerator has two kinds, G-M type low frequency vascular refrigerator and stirling-type high-frequency vascular refrigerator.The back-heating type stirling-type vascular refrigerator that the present invention relates to because of its operating frequency high, volume is little, vibrates little, has important application prospect at liquid helium region.
The operation temperature area of low temperature back-heating type vascular refrigerator is low to moderate below 20K, and at this warm area, the real gas character of working medium helium can significantly depart from perfect gas character.Real gas loss is the leading loss of low temperature back-heating type vascular refrigerator at low temperature warm area.The effective ways reducing real gas loss reduce pressure.Such as use throttle pipe to gas throttling step-down, increase expansion gear, bidirection air intake by time equal enthalpy stream reach maximum etc.
Summary of the invention
The object of the invention is to adopt centrifugal screw type regenerator, make fluid closer to the character of perfect gas, the loss that reduction fluid departs from perfect gas character and causes, thus improve the efficiency of 4K warm area vascular refrigerator.
Adopt a 4K warm area low temperature pulse tubes refrigeration machine for centrifugal screw type regenerator, comprise one-level back-heating type vascular refrigerator, secondary back-heating type vascular refrigerator, three grades of back-heating type vascular refrigerators, heat bridges;
Wherein one-level back-heating type vascular refrigerator comprises stage compressor, one-level cooler, one-level regenerator, one-level vascular, one-level hot end heat exchanger, one-level inertia tube, one-level air reservoir; Wherein the outlet of stage compressor is connected with the entrance of one-level cooler, the outlet of one-level cooler is connected with the entrance of one-level regenerator again, the outlet of one-level vascular connects one-level hot end heat exchanger first end, and one-level hot end heat exchanger second end connects one-level air reservoir through one-level inertia tube;
Wherein secondary back-heating type vascular refrigerator comprises split-compressor, secondary coolers, secondary regenerator, secondary vascular, secondary hot end heat exchanger, secondary inertia tube, secondary air reservoir; Wherein split-compressor outlet connects secondary coolers entrance, and secondary coolers outlet connects secondary regenerator entrance, and the outlet of secondary vascular connects secondary hot end heat exchanger first end, and secondary hot end heat exchanger second end connects secondary air reservoir through secondary inertia tube;
Wherein three grades of back-heating type vascular refrigerators comprise three-stage blower, three grades of coolers, three grades of regenerators, centrifugal screw type runner, three grades of cool end heat exchangers, tertiary vein pipe, three grades of hot end heat exchangers, three grades of inertia tubes, three grades of air reservoirs; Wherein three-stage blower outlet connection three grades of cooler entrances, three grades of cooler outlets connect three grades of regenerator hot junctions, three grades of regenerator cold junctions connect three grades of cool end heat exchanger first ends, three grades of cool end heat exchanger second ends connect tertiary vein tube inlet, tertiary vein pipe outlet connection three grades of hot end heat exchanger first ends, three grades of hot end heat exchanger second ends connect three grades of air reservoirs by three grades of inertia tubes;
The outlet of above-mentioned one-level regenerator and the entrance of one-level vascular are connected to three grades of regenerators and secondary regenerator by heat bridge, and the outlet of secondary regenerator and the entrance of secondary vascular are connected to three grades of regenerators, the outlet of tertiary vein pipe and three grades of hot end heat exchangers by heat bridge;
It is characterized in that: third level vascular refrigerator adopts centrifugal screw type regenerator, this regenerator makes the character of the fluid helium working in this warm area closer to perfect gas.
The feature of the 4K warm area low temperature pulse tubes refrigeration machine of centrifugal screw type regenerator is adopted to comprise following process:
The process of refrigerastion of the first order is after stage compressor Compressed Gas, and gas enters the cooling of one-level cooler, and then gas enters after one-level regenerator lowers the temperature further, enters one-level vascular.Gas compresses and heat is discharged rear backflow by one-level hot end heat exchanger in one-level vascular, cooling of expanding in reflux course, and absorbs the thermic load from heat bridge.One-level inertia tube and one-level air reservoir are to gas phase modulation.Rely on the thermal coupling of heat bridge, one-level back-heating type vascular refrigerator is to secondary back-heating type vascular refrigerator and the precooling of three grades of back-heating type vascular refrigerators, and secondary back-heating type vascular refrigerator is to the precooling of three grades of back-heating type vascular refrigerators.
The process of refrigerastion of the second level is after split-compressor Compressed Gas, makes gas enter secondary coolers cooling, and then gas enters after secondary regenerator lowers the temperature further, enters secondary vascular.Gas compresses and heat is discharged rear backflow by secondary hot end heat exchanger in secondary vascular, and cooling of expanding in reflux course, absorbs the thermic load from heat bridge.Secondary inertia tube and secondary air reservoir are to gas phase modulation.Rely on the thermal coupling of heat bridge, secondary back-heating type vascular refrigerator is to the precooling of three grades of back-heating type vascular refrigerators.
The process of refrigerastion of the third level is after three-stage blower Compressed Gas, makes gas enter the cooling of three grades of coolers, and then gas enters after three grades of regenerators lower the temperature further, enters tertiary vein pipe.Gas compresses and heat is discharged rear backflow by three grades of hot end heat exchangers in tertiary vein pipe, and cooling of expanding in reflux course, absorbs the thermic load from three grades of cool end heat exchangers.Three grades of inertia tubes and three grades of air reservoirs are to gas phase modulation.Third level regenerator cold junction inside is filled with the laminarization that copper mesh ensures heat exchange and the helium working medium from the outflow of screw type runner, and screw type runner makes the character of the fluid helium working in this warm area closer to perfect gas.Third level regenerator cold junction inside is filled with the laminarization that copper mesh ensures heat exchange and the helium working medium from the outflow of screw type runner, centrifugal helical flow path its radius of spin from hot junction to cold junction reduces gradually, and its effect is that the character of the fluid helium making to work in this warm area is closer to perfect gas.
The 4K low temperature pulse tubes refrigeration machine of centrifugal screw type regenerator is adopted to compare with other vascular refrigerators.When fluid flow to the process of cold junction from regenerator hot junction, in regenerator, the flow area of working fluid helium reduces gradually, and fluid velocity increases, and pressure reduces, thus make the character of fluid closer to perfect gas, reduce because helium working medium departs from the regenerator loss that perfect gas characteristic causes; When fluid refluxes from vascular, through centrifugal screw type regenerator, in regenerator, the flow area of working fluid helium increases gradually, and fluid velocity reduces, and pressure increases gradually.The barometric gradient reduced gradually is formed along inner hot junction to the cold junction direction of screw type regenerator, regenerator cold junction working medium is made to be in environment under low pressure, reduce real gas loss, and under regenerator screw type runner hot junction working medium is in relative high pressure, be more conducive to improve the refrigeration effect of working medium at respective warm area.The following real gas loss of 20K warm area is the leading loss (accounting for 50%-80%) of 4K warm area low temperature philip refrigerator.Compared to two-dimentional gradual shrinkage regenerator runner, the circulation area change of centrifugal helical flow path is milder, is conducive to the laminarization of fluid.The present invention, by adopting centrifugal screw type regenerator lower than 20K warm area position, makes the fluid helium character working in this warm area closer to perfect gas, therefore has vital effect for the refrigerating efficiency improving low temperature philip refrigerator.
Accompanying drawing explanation
Fig. 1 is a kind of low temperature back-heating type stirling-type vascular refrigerator;
Fig. 2 is the screw type runner of centrifugal screw type regenerator;
Fig. 3 is real gas loss QUOTE
?
with the ratio of cold junction PV merit and the relation of pressure;
Label title in figure: 1, stage compressor, 2, one-level cooler, 3, one-level regenerator, 4, heat bridge, 5, centrifugal screw type runner, 6, one-level vascular, 7, one-level hot end heat exchanger, 8, one-level inertia tube, 9, one-level air reservoir, 10, one-level back-heating type vascular refrigerator, 11, three-stage blower, 12, three grades of coolers, 13, three grades of regenerators, 14, three grades of air reservoirs, 15, three grades of inertia tubes, 16, three grades of hot end heat exchangers, 17, tertiary vein pipe, 18, three grades of cool end heat exchangers, 19, three grades of back-heating type vascular refrigerators, 20, split-compressor, 21, secondary coolers, 22, secondary regenerator, 23, secondary vascular, 24, secondary hot end heat exchanger, 25, secondary inertia tube, 26, secondary air reservoir, 27, secondary back-heating type vascular refrigerator.
Detailed description of the invention
Shown in Fig. 1, have employed the 4K low temperature pulse tubes refrigeration machine of centrifugal screw type regenerator, comprise one-level back-heating type vascular refrigerator 10, secondary back-heating type vascular refrigerator 27, three grades of back-heating type vascular refrigerators 19, heat bridges 4;
Wherein one-level back-heating type vascular refrigerator 10 comprises stage compressor 1, one-level cooler 2, one-level regenerator 3, one-level vascular 6, one-level hot end heat exchanger 7, one-level inertia tube 8, one-level air reservoir 9; Wherein the outlet of stage compressor 1 is connected with the entrance of one-level cooler 2, the outlet of one-level cooler 2 is connected with the entrance of one-level regenerator 3 again, the outlet of one-level vascular 6 connects one-level hot end heat exchanger 7 first end, and one-level hot end heat exchanger 7 second end connects one-level air reservoir 9 through one-level inertia tube 8;
Wherein secondary back-heating type vascular refrigerator 27 comprises split-compressor 20, secondary coolers 21, secondary regenerator 22, secondary vascular 23, secondary hot end heat exchanger 24, secondary inertia tube 25, secondary air reservoir 26; Wherein split-compressor 20 exports and connects secondary coolers 21 entrance, secondary coolers 21 exports and connects secondary regenerator 22 entrance, secondary vascular 23 exports and connects secondary hot end heat exchanger 24 first end, and secondary hot end heat exchanger 24 second end connects secondary air reservoir 26 through secondary inertia tube 25;
Wherein three grades of back-heating type vascular refrigerators 19 comprise three-stage blower 11, three grades of coolers 12, three grades of regenerators 13, centrifugal screw type runner 5, three grades of cool end heat exchangers 18, tertiary vein pipe 17, three grades of hot end heat exchangers 16, three grades of inertia tubes 15, three grades of air reservoirs 14; Wherein three-stage blower 11 exports connection three grades of cooler 12 entrances, three grades of coolers 12 export connection three grades of regenerator 13 hot junctions, three grades of regenerator 13 cold junctions connect three grades of cool end heat exchanger 18 first ends, three grades of cool end heat exchanger 18 second ends connect tertiary vein pipe 17 entrance, tertiary vein pipe 17 exports connection three grades of hot end heat exchanger 16 first ends, and three grades of hot end heat exchanger 16 second ends connect three grades of air reservoirs 14 by three grades of inertia tubes 15; Above-mentioned one-level regenerator 3 exports, the middle part of one-level vascular 6 entrance, three grades of regenerators 13, secondary regenerator 22 is connected together successively by the first heat bridge 4-1; Secondary vascular 23 entrance, secondary regenerator 22 export, three grades of regenerators 13, tertiary vein pipe 17 export, three grades of hot end heat exchanger 16 first ends are connected together successively by the second heat bridge 4-2;
The described back-heating type stirling-type vascular refrigerator third level adds centrifugal screw type regenerator, when fluid flow to the process of cold junction from regenerator hot junction, in regenerator, the flow area of working fluid helium reduces gradually, fluid velocity increases, fluid pressure reduces, thus make the character of fluid closer to perfect gas, reduce because helium working medium departs from the regenerator loss that perfect gas characteristic causes; When fluid is back to regenerator from vascular, fluid is through centrifugal screw type runner, in regenerator, the flow area of working fluid helium increases gradually, fluid velocity reduces, and pressure increases gradually, forms the barometric gradient increased gradually along regenerator cold junction to direction, hot junction, regenerator cold junction working medium is made to be in environment under low pressure, and under screw type regenerator hot junction working medium is in relative high pressure, be more conducive to improve the refrigeration effect of working medium at respective warm area, thus improve the refrigerating efficiency of refrigeration machine.
Shown in Fig. 2, centrifugal screw type regenerator is spiraled by gradually reducing pipeline and forms.Fluid changes flow velocity and volume ratio because of the sectional area change of pipeline.Compared to two-dimentional gradual shrinkage regenerator, the circulation area change of centrifugal screw type regenerator runner is milder, is conducive to the laminarization of fluid.
Shown in Fig. 3, working medium helium-3 and helium-4 real gas enthalpy stream QUOTE
?
with the change along with pressure of the ratio of cold junction PV merit.Under normal circumstances QUOTE
?
namely the criterion that relevant to pressure term enthalpy stream loses as real gas.In the leading loss that this loss of below 20K warm area is 4K warm area regenerator.At low pressures, working medium character is close to perfect gas, and the real gas loss of refrigeration machine is little, is conducive to improving refrigerating efficiency.By using centrifugal screw type regenerator, the pressure of working medium helium at below 20K warm area significantly can be reduced.
Concrete implementation method of the present invention is: this low temperature back-heating type vascular refrigerator is three grades of thermal coupling type structures, and under low temperature, gas circuit at different levels does not interfere with each other.These structural parameters are clear, step-by-step optimization, certainty are good.Three grades of this vascular refrigerator use three compressor driving gases respectively, and a two stage cooler is given three grades and provided precooling.When the fluid in three grades of regenerators enters centrifugal screw type regenerator, in regenerator, the flow area of working fluid helium reduces gradually, fluid velocity increases, pressure reduces, thus make the character of fluid closer to perfect gas, reduce because helium working medium departs from the regenerator loss that perfect gas characteristic causes; When fluid is back to regenerator from vascular, fluid is through centrifugal screw type runner, and in regenerator, the flow area of working fluid helium increases gradually, and fluid air flow speed reduces, and pressure increases gradually.The barometric gradient reduced gradually is formed along screw type regenerator hot junction to cold junction direction, regenerator cold junction working medium is made to be in environment under low pressure, reduce real gas loss, and under regenerator screw type runner hot junction working medium is in relative high pressure, be more conducive to improve the refrigeration effect of working medium at respective warm area, thus improve the refrigerating efficiency of low temperature philip refrigerator.
After this refrigeration machine installs centrifugal screw type runner additional, retaining the advantage that structure is simple, reliability is high, cryogenic temperature is low while, refrigerating efficiency is improved, for improving vascular refrigerator important in inhibiting better.
Claims (2)
1. have employed a 4K Cryo Refrigerator for centrifugal screw type regenerator, comprise one-level back-heating type vascular refrigerator (10), secondary back-heating type vascular refrigerator (27), three grades of back-heating type vascular refrigerators (19), heat bridge (4);
Wherein one-level back-heating type vascular refrigerator (10) comprises stage compressor (1), one-level cooler (2), one-level regenerator (3), one-level vascular (6), one-level hot end heat exchanger (7), one-level inertia tube (8), one-level air reservoir (9); Wherein the outlet of stage compressor (1) is connected with the entrance of one-level cooler (2), the outlet of one-level cooler (2) is connected with the entrance of one-level regenerator (3) again, the outlet of one-level vascular (6) connects one-level hot end heat exchanger (7) first end, and one-level hot end heat exchanger (7) second end connects one-level air reservoir (9) through one-level inertia tube (8);
Wherein secondary back-heating type vascular refrigerator (27) comprises split-compressor (20), secondary coolers (21), secondary regenerator (22), secondary vascular (23), secondary hot end heat exchanger (24), secondary inertia tube (25), secondary air reservoir (26); Wherein split-compressor (20) outlet connects secondary coolers (21) entrance, secondary coolers (21) outlet connects secondary regenerator (22) entrance, secondary vascular (23) outlet connects secondary hot end heat exchanger (24) first end, and secondary hot end heat exchanger (24) second end connects secondary air reservoir (26) through secondary inertia tube (25);
Wherein three grades of back-heating type vascular refrigerators (19) comprise three-stage blower (11), three grades of coolers (12), three grades of regenerators (13), centrifugal screw type runner (5), three grades of cool end heat exchangers (18), tertiary vein pipe (17), three grades of hot end heat exchangers (16), three grades of inertia tubes (15), three grades of air reservoirs (14); Wherein three-stage blower (11) outlet connection three grades of cooler (12) entrances, three grades of cooler (12) outlet connection three grades of regenerator (13) hot junctions, three grades of regenerator (13) cold junctions connect three grades of cool end heat exchanger (18) first ends, three grades of cool end heat exchanger (18) second ends connect tertiary vein pipe (17) entrance, tertiary vein pipe (17) outlet connection three grades of hot end heat exchanger (16) first ends, three grades of hot end heat exchanger (16) second ends connect three grades of air reservoirs (14) by three grades of inertia tubes (15); The middle part of above-mentioned one-level regenerator (3) outlet, one-level vascular (6) entrance, three grades of regenerators (13), secondary regenerator (22) is connected together successively by the first heat bridge (4-1); The outlet of secondary vascular (23) entrance, secondary regenerator (22), three grades of regenerators (13), tertiary vein pipe (17) outlet, three grades of hot end heat exchanger (16) first ends are connected together successively by the second heat bridge (4-2);
It is characterized in that:
Three grades of regenerators (13) add centrifugal screw type runner (5) lower than 20K warm area position, wherein centrifugal screw type runner (5) hot junction is connected with three grades of regenerator (13) cold junctions, and centrifugal screw type runner (5) cold junction is connected with three grades of cool end heat exchanger (18) first ends; Centrifugal helical flow path (5) its radius of spin from hot junction to cold junction reduces gradually, and its effect is that the character of the fluid helium making to work in this warm area is closer to perfect gas.
2. the refrigerating method of the 4K warm area Cryo Refrigerator of the centrifugal screw type regenerator of employing according to claim 1, is characterized in that comprising following process:
The process of refrigerastion of the first order is after stage compressor (1) Compressed Gas, makes gas enter one-level cooler (2) cooling, after then gas enters the further cooling of one-level regenerator (3), enters one-level vascular (6); Gas compresses and heat is discharged rear backflow by one-level hot end heat exchanger (7) in one-level vascular (6), and cooling of expanding in reflux course, absorbs the thermic load from heat bridge (4); One-level inertia tube (8) and one-level air reservoir (9) are to gas phase modulation; Rely on the thermal coupling of heat bridge (4-1), one-level back-heating type vascular refrigerator (10) carries out precooling to secondary back-heating type vascular refrigerator (27) and three grades of back-heating type vascular refrigerators (19), and secondary back-heating type vascular refrigerator (28) carries out precooling to three grades of back-heating type vascular refrigerators (19);
The process of refrigerastion of the second level is after split-compressor (20) Compressed Gas, makes gas enter secondary coolers (21) cooling, after then gas enters the further cooling of secondary regenerator (22), enters secondary vascular (23); Gas compresses and heat is discharged rear backflow by secondary hot end heat exchanger (24) in secondary vascular (23), and cooling of expanding in reflux course, absorbs the thermic load from heat bridge (4-2); Secondary inertia tube (25) and secondary air reservoir (26) are to gas phase modulation; Rely on the thermal coupling of heat bridge (4-2), secondary back-heating type vascular refrigerator (23) is to the precooling of three grades of back-heating type vascular refrigerators (19);
The process of refrigerastion of the third level is after three-stage blower (11) Compressed Gas, makes gas enter three grades of cooler (12) coolings, after then gas enters the further cooling of three grades of regenerators (13), enters tertiary vein pipe (17); Gas compresses and heat is discharged rear backflow by three grades of hot end heat exchangers (24) in tertiary vein pipe (17), and cooling of expanding in reflux course, absorbs the thermic load from three grades of cool end heat exchangers (18); Three grades of inertia tubes (15) and three grades of air reservoirs (14) are to gas phase modulation; Third level regenerator cold junction inside is filled with the laminarization that copper mesh ensures heat exchange and the helium working medium from the outflow of screw type runner, and screw type runner makes the character of the fluid helium working in this warm area closer to perfect gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523678.8A CN104296411B (en) | 2014-10-08 | 2014-10-08 | Use 4K low temperature pulse tubes refrigeration machine and the method for centrifugal screw type regenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523678.8A CN104296411B (en) | 2014-10-08 | 2014-10-08 | Use 4K low temperature pulse tubes refrigeration machine and the method for centrifugal screw type regenerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104296411A true CN104296411A (en) | 2015-01-21 |
| CN104296411B CN104296411B (en) | 2016-08-24 |
Family
ID=52316251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410523678.8A Expired - Fee Related CN104296411B (en) | 2014-10-08 | 2014-10-08 | Use 4K low temperature pulse tubes refrigeration machine and the method for centrifugal screw type regenerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104296411B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091463A (en) * | 2016-05-09 | 2016-11-09 | 南京航空航天大学 | 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and refrigerating method thereof |
| CN106313520A (en) * | 2016-08-31 | 2017-01-11 | 河北永昌车辆部件科技有限公司 | Coated seal strip and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3148426A1 (en) * | 1981-12-08 | 1983-06-23 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Liquid/gas phase separator |
| US5638684A (en) * | 1995-01-16 | 1997-06-17 | Bayer Aktiengesellschaft | Stirling engine with injection of heat transfer medium |
| CN101852506A (en) * | 2010-05-14 | 2010-10-06 | 南京柯德超低温技术有限公司 | Implementation method of pulse tube refrigerator capable of being installed and used at any angle, and device thereof |
| CN102331105A (en) * | 2011-09-23 | 2012-01-25 | 浙江大学 | Pulse tube refrigerator with precooling pulse tube |
| CN202928220U (en) * | 2012-11-28 | 2013-05-08 | 浙江大学 | Deep low temperature heat regenerator adopting carbon nanometer heat regeneration filling materials and pulse pipe refrigerating machine of deep low temperature heat regenerator |
| CN103994597A (en) * | 2014-05-27 | 2014-08-20 | 南京航空航天大学 | 4K regenerative type low-temperature refrigerating machine and method by adoption of ultrasonic atomization device |
| CN204141881U (en) * | 2014-10-08 | 2015-02-04 | 南京航空航天大学 | Adopt the 4K low temperature pulse tubes refrigeration machine of centrifugal screw type regenerator |
-
2014
- 2014-10-08 CN CN201410523678.8A patent/CN104296411B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3148426A1 (en) * | 1981-12-08 | 1983-06-23 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Liquid/gas phase separator |
| US5638684A (en) * | 1995-01-16 | 1997-06-17 | Bayer Aktiengesellschaft | Stirling engine with injection of heat transfer medium |
| CN101852506A (en) * | 2010-05-14 | 2010-10-06 | 南京柯德超低温技术有限公司 | Implementation method of pulse tube refrigerator capable of being installed and used at any angle, and device thereof |
| CN102331105A (en) * | 2011-09-23 | 2012-01-25 | 浙江大学 | Pulse tube refrigerator with precooling pulse tube |
| CN202928220U (en) * | 2012-11-28 | 2013-05-08 | 浙江大学 | Deep low temperature heat regenerator adopting carbon nanometer heat regeneration filling materials and pulse pipe refrigerating machine of deep low temperature heat regenerator |
| CN103994597A (en) * | 2014-05-27 | 2014-08-20 | 南京航空航天大学 | 4K regenerative type low-temperature refrigerating machine and method by adoption of ultrasonic atomization device |
| CN204141881U (en) * | 2014-10-08 | 2015-02-04 | 南京航空航天大学 | Adopt the 4K low temperature pulse tubes refrigeration machine of centrifugal screw type regenerator |
Non-Patent Citations (2)
| Title |
|---|
| L.M. QIU,Q. CAO,X.Q. ZHI,Z.H. GAN,Y.B. YU,Y. LIU: "A three-stage Stirling pulse tube cryocooler operating below the critical point of helium-4", 《CRYOGENICS》, vol. 51, no. 10, 31 October 2011 (2011-10-31), pages 609 - 612, XP 028321429, DOI: doi:10.1016/j.cryogenics.2011.07.007 * |
| 植晓琴，邱利民，甘智华，曹强，刘旸: "可达5K以下的三级斯特林型脉管制冷机性能研究", 《工程热物理学报》, vol. 33, no. 5, 15 May 2012 (2012-05-15) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091463A (en) * | 2016-05-09 | 2016-11-09 | 南京航空航天大学 | 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and refrigerating method thereof |
| CN106313520A (en) * | 2016-08-31 | 2017-01-11 | 河北永昌车辆部件科技有限公司 | Coated seal strip and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104296411B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108253650B (en) | A kind of control method of critical-cross carbon dioxide combined heat-pump system | |
| CN102147164A (en) | High-efficiency vas refrigerating machine | |
| CN203375758U (en) | Refrigerating cycle system | |
| CN104197591B (en) | Use helium as the deep hypothermia regenerator of backheat medium and vascular refrigerator thereof | |
| CN105466063A (en) | Heat pump system | |
| CN102331105A (en) | Pulse tube refrigerator with precooling pulse tube | |
| CN105202793A (en) | Vortex-tube-bearing CO2 double-stage compressive refrigerating system | |
| CN202598941U (en) | Thermal coupling pulse tube refrigerator | |
| CN203561058U (en) | Hot water unit of carbon dioxide heat pump | |
| US11674724B2 (en) | Air source CO2 heat pump system for preventing evaporator from frosting by using heat of heat regenerator | |
| CN104296411B (en) | Use 4K low temperature pulse tubes refrigeration machine and the method for centrifugal screw type regenerator | |
| CN206584789U (en) | A kind of cold-junction container for helium gas cooling | |
| CN213040803U (en) | Efficient liquefaction system of regenerative refrigerator adopting direct current | |
| CN106683821B (en) | A kind of cold-junction container for helium gas cooling | |
| CN204141881U (en) | Adopt the 4K low temperature pulse tubes refrigeration machine of centrifugal screw type regenerator | |
| CN106091463A (en) | 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and refrigerating method thereof | |
| CN106642768A (en) | Air conditioning system | |
| CN206320956U (en) | Heating heat pump under a kind of ultra-low temperature surroundings | |
| CN206377880U (en) | Suitable for ultra-high vacuum environment compact without liquid helium 1K cryogenic refrigerating units | |
| CN206131508U (en) | Critical CO2 combined heat pump strides | |
| CN204787375U (en) | Refrigerating system and refrigeration plant with change white function | |
| CN205957528U (en) | 4K thermal coupling backheat formula cryocooler based on controllable heat pipe | |
| CN103673370B (en) | Gas coupled mode multi-stage pulse tube refrigerator | |
| CN103743149B (en) | Check valve controls the heat pump type air conditioning system of refrigerant flow direction in regenerator | |
| CN202792723U (en) | Parallel flow condenser for freezer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20171008 |