CN202973643U - Multi-stage pulse tube refrigerator adopting relay linear compressor - Google Patents
Multi-stage pulse tube refrigerator adopting relay linear compressor Download PDFInfo
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- CN202973643U CN202973643U CN201220686742.0U CN201220686742U CN202973643U CN 202973643 U CN202973643 U CN 202973643U CN 201220686742 U CN201220686742 U CN 201220686742U CN 202973643 U CN202973643 U CN 202973643U
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Abstract
The utility model discloses a multi-stage pulse tube refrigerator adopting a relay linear compressor. The multi-stage pulse tube refrigerator comprises a compressor, a regenerator hot end heat exchanger, a high-temperature section regenerator, high-temperature section regenerator cold end heat exchangers, a first-stage pulse tube, a first-stage pulse tube hot end heat exchanger and first-stage phase-modulating parts, which are sequentially communicated. The multi-stage pulse tube refrigerator further comprises a low-temperature section regenerator, low-temperature section regenerator cold end heat exchangers, a second-stage pulse tube, a second-stage pulse tube hot end heat exchanger and second-stage phase-modulating parts which are sequentially communicated. The cold end of the high-temperature section regenerator is connected with the hot end of the low-temperature section regenerator through a pipeline, and the pipeline is provided with the relay linear compressor which is used for compressing the air passing through the pipeline. The pressure ratio of the cold end of the high-temperature section regenerator of the multi-stage pulse tube refrigerator adopting the relay linear compressor is further increased, consequently, a high pressure ratio is obtained at the cold end of the multi-stage pulse tube refrigerator, and the efficiency of the multi-stage pulse tube refrigerator is ultimately increased; and meanwhile, the multi-stage pulse tube refrigerator has the advantages of being compact in structure, long in service life, high in reliability and the like.
Description
Technical field
The utility model relates to refrigeration technology field, specifically relates to a kind of multistage vascular refrigerator that adopts the relaying Linearkompressor.
Background technology
Table 1 has provided dissimilar in the space exploration and corresponding black body radiation temperature and applicable type photodetector and the operating temperature of electromagnetic wave wavelength, there is as can be seen from Table 1 quite most detector to be operated in 4K and mK level warm area, and mK level warm area must provide precooling by the 4K warm area, so the 4K warm area is an extremely important warm area in space exploration, is the Focal point and difficult point of scientific research always.
Table 1: dissimilar and corresponding black body radiation temperature and applicable type photodetector and the operating temperature of electromagnetic wave wavelength
At present, the refrigeration modes of liquid helium warm area mainly contains liquid helium (or superfluid helium) Dewar technology and mechanical type Refrigeration Technique.Wherein the utilization of liquid helium Dewar Refrigeration Technique is stored in liquid helium in the high vacuum multiple layer heat insulation storage tank or the evaporation endothermic of superfluid helium is realized refrigeration effect, this mode can obtain more stable temperature, space flight field of detecting in early days has a wide range of applications, technology is relatively ripe, but it exists that volume is large, Heavy Weight, adiabatic system is complicated, launch cost is high and be subject to the shortcoming such as working medium memory space restriction service life.Progress and development along with the mechanical type Refrigeration Technique, the particularly application of the technology such as flat spring and clearance seal, thoroughly solve the long-life problem that the Dewar technology can't overcome all the time, made the mechanical type Refrigeration Technique as fast-developing and occupy suitable share at space industry over nearly 20 years as sterlin refrigerator and vascular refrigerator.With sterlin refrigerator, compare, vascular refrigerator does not have moving component at cold junction, but has the advantages such as simple in structure, that cost is low, the little property of mechanical oscillation is high and the life-span is long, is the desirable type that is applicable to very much the space application.Vascular refrigerator is relative with 35K warm area technology ripe at 80K, existing some refrigeration machines are successfully applied in space tasks, but because refrigeration mechanism and the loss mechanism of 4K warm area are grasped not yet fully, high-frequency vascular refrigerator still is difficult to arrive the 4K temperature at present, although the report that adopts high-frequency vascular refrigerator to obtain the 4K warm area is arranged current, but refrigerator system textural anomaly complexity, efficiency is very low, and usually all needs abnormal rare helium-3 working medium in source.
The correlative study of pre-cold mould single-stage high-frequency vascular refrigerator is found, the principal element that the restriction high-frequency vascular refrigerator efficiently arrives the liquid helium warm area is that the temperature span large (300K to 4K) due to 4K warm area regenerator causes the pressure loss of regenerator large far beyond high temperature level regenerator, and then make the cold junction pressure ratio of 4K warm area regenerator less than normal, and the cold junction pressure ratio is a very important parameter in vascular refrigerator, large pressure ratio means larger acting ability, so, for high-frequency vascular refrigerator, the key that obtains efficiently the 4K warm area is how to obtain larger cold junction pressure ratio.
Adopt regenerator simulation softward Regen3.3 to the analog result of 4K warm area regenerator (being generally 4-20K) as shown in Figure 4, as can be seen from Figure 4 work as cold junction temperature and be fixed as 4K, at specific dimensions, under regenerative material and lower the blowing pressure condition (being generally 0.5-1.0MPa), its hot-side temperature significantly improves along with the increase of regenerator cold junction pressure ratio, the raising of its hot-side temperature means can provide precooling for it at higher warm area, alleviated the performance requirement to the precooling level, result of calculation also shows when adopting helium-4 for working medium, the cold junction pressure ratio is 1.4 o'clock, its hot-side temperature approaches 40K, if so adopt suitable structure to obtain 1.4 pressure ratio at the cold junction of liquid helium warm area regenerator, adopt the structure of three grades or even two-stage just can obtain efficiently the liquid helium warm area.Simultaneously the viscosity of helium along with the variation of temperature as shown in Figure 5, as can be seen from Figure 5 the viscosity of helium significantly reduces along with the reduction of temperature, it is the high temperature section that the pressure loss of regenerator mainly occurs in 300-80K, and the biography that almost can can't harm at low temperatures regenerator, think efficient acquisition liquid helium warm area key be how at the regenerator cold junction, to obtain larger pressure ratio.
The Patent Application Publication that application number is CN200920143251.X a kind of Split type Stirling refrigerating machine, comprise that dual linear motor drives two compression pistons of same axis, 180 ° of two linear electric motors are arranged symmetrically with, double-piston is to moving; Linear electric motors adopt moving-magnetic type linear motor, double voice coil structure; Compression piston, by two groups little quality long service-life diaphragm spring supportings, adopts contactless clearance sealing structure between piston and cylinder body; Decompressor adopts little quality displacer structure, and cylindrical spring supports, pneumatic actuation; The decompressor cylinder body consists of stainless steel thin-wall cylinder block body and the stainless steel cylinder body plug laser weld of through hole.While utilizing above-mentioned Split type Stirling refrigerating machine, still be difficult to obtain the following warm area of 4K, and refrigerating efficiency is very low.
The utility model content
The utility model provides a kind of multistage vascular refrigerator that adopts the relaying Linearkompressor, adopt this refrigeration machine, can obtain higher pressure ratio at the cold junction of regenerator, when obtaining identical cryogenic temperature, alleviated the performance requirement to the precooling level, reduce the regenerator loss, thereby improved the refrigerating efficiency of refrigeration machine.
A kind of multistage vascular refrigerator that adopts the relaying Linearkompressor, comprise the compressor be communicated with successively, the regenerator hot end heat exchanger, the high temperature section regenerator, high temperature section regenerator cool end heat exchanger, the one-level vascular, one-level vascular hot-side heat exchanger and one-level phase modulation parts, and the low-temperature zone regenerator be communicated with successively, low-temperature zone regenerator cool end heat exchanger, the secondary vascular, secondary vascular hot-side heat exchanger and secondary phase modulation parts, the cold junction of described high temperature section regenerator is communicated with the hot junction of low-temperature zone regenerator by pipeline simultaneously, this pipeline is provided with for compression by the relaying Linearkompressor of pipeline gas, to realize the increase of pressure ratio.
The utility model adopts and arrange the relaying Linearkompressor between multistage vascular refrigerator high temperature section regenerator cold junction and low-temperature zone regenerator hot junction, realized the further increase of multistage vascular refrigerator high temperature section regenerator cold junction pressure ratio, and then obtain larger pressure ratio at multistage vascular refrigerator cold junction, finally improved the efficiency of multistage vascular refrigerator.
Adjustment for ease of the mass flow in the regenerator related in the utility model and pressure wave phase place, to improve the operating efficiency of vascular refrigerator, as preferably, described one-level phase modulation parts and secondary phase modulation parts are inertia tube and the air reservoir be communicated with corresponding vascular hot-side heat exchanger respectively.According to the difference of vascular refrigerator inner structure, described one-level phase modulation parts and secondary phase modulation parts also can be selected other phase modulation structures.
For ease of processing and the assembling of the multistage vascular refrigerator of employing relaying Linearkompressor of the present utility model, as preferably, described relaying Linearkompressor comprises: the cylinder body of both ends open, and this cylinder side wall is provided with the gas outlet with described pipeline connection; Coaxially be arranged on two pistons in the cylinder body both ends open; Drive respectively two linear electric machines of two piston operations; Coil in described two linear electric machines is superconducting coil.The utility model adopts superconducting coil, has eliminated the copper loss caused by resistance in the linear electric machine in the relaying Linearkompressor, has effectively improved efficiency and the service life of compressor.Simultaneously, adopt the relaying Linearkompressor to overcome the technical difficulty that current 4K warm area high-frequency vascular refrigerator can't obtain larger cold junction pressure ratio.
Superconduction relaying Linearkompressor is the relaying Linearkompressor of work employing superconducting coil at low temperatures, it is arranged between the high temperature section regenerator cold junction and low-temperature zone regenerator hot junction of multistage vascular refrigerator, because helium has larger viscosity in the warm area of high temperature section regenerator leap, cause the larger pressure loss, make the cold junction of high temperature section regenerator press smaller, superconduction relaying Linearkompressor provides the function of a high temperature section regenerator cold junction gas relaying compression, thereby realize the further compression of multistage vascular refrigerator high temperature section regenerator cold junction gas, and then in the larger pressure ratio of low-temperature zone regenerator porch acquisition, simultaneously because the viscosity of helium in the warm area of low-temperature zone regenerator leap is very little, so this larger entrance pressure ratio can be close to the harmless cold junction that is transferred to regenerator, thereby the cold junction at regenerator obtains larger pressure ratio, the final efficiency that improves multistage vascular refrigerator, simultaneously owing to having adopted superconducting coil, eliminated the copper loss caused by resistance in the linear electric machine, can effectively reduce for taking away the cold of work superconduction relaying compressor heating at a lower temperature, and the linear compressor arrangement of superconduction relaying is very compact, so adopt two-stage or the Three-stage Pulse Tube Refrigerator of superconduction relaying Linearkompressor just can obtain efficiently the 4K temperature, there is compact conformation, life-span length, high reliability simultaneously.
Described superconducting coil can adopt the superconductor of critical-temperature higher than 20K, and need be operated in it below critical-temperature.Be filled with the backheat filler (as stainless steel cloth etc.) of high volumetric specific heat capacity in described high temperature section regenerator, the low-temperature zone regenerator is filled with the backheat filler (as lead shot, Er3Ni etc.) of high volumetric specific heat capacity.
Described two linear electric machines are independently moving-magnetic type linear electric machine, moving-coil type linear electric machine or moving-iron type linear electric machine respectively, in the practical set process, can select according to actual needs the linear electric machine of appropriate configuration.As preferably, described moving-magnetic type linear electric machine comprises: with the relatively-stationary yoke of cylinder body; Be fixed on the superconducting coil be connected with power supply in yoke; Permanent magnet; For the permanent magnet support of fixing described permanent magnet, this permanent magnet support interfixes with corresponding piston by the first flat spring.
As preferably, described moving-coil type linear electric machine comprises: with the relatively-stationary yoke of cylinder body; Be fixed on the permanent magnet in yoke; The superconducting coil be connected with power supply; For the coil brace of fixing described superconducting coil, this coil brace interfixes with corresponding piston by the second flat spring.
The first flat spring and the second flat spring, when guaranteeing piston fast reposition, have also guaranteed the axiality of piston and cylinder body, reduce the wearing and tearing between cylinder body and piston, the service life of further improving compressor.When cylinder body shorter, when piston is longer, for further guaranteeing the axiality between cylinder body and piston, as further preferred, the multistage vascular refrigerator of the utility model also comprises the shell with blow vent, and described cylinder body is fixing in the enclosure by the fixed mount with gas flow; Described yoke and coil brace interfix with described fixed mount simultaneously; Also be respectively equipped with the 3rd flat spring between described fixed mount and two pistons.The quantity that the 3rd flat spring arranges can be determined according to the length of actual cylinder body and piston, generally can arrange one to two.The first flat spring, the second flat spring and the 3rd flat spring other flexible members that also optional use has a same function replace.
For ease of processing and the installation of shell, as preferably, described fixed mount is loop configuration, and this fixed mount outer wall is provided with positioning convex ring; Described shell is comprised of symmetrically arranged two stavings, and each staving opening is equipped with the flange face for cooperatively interacting with described positioning convex ring, during actual installation, directly utilizes bolt that the positioning convex ring on two stavings and described fixed mount is interfixed and gets final product.
For ease of the layout of permanent magnet or superconducting coil, as preferably, described yoke is comprised of outer yoke and the interior yoke of annular, and described superconducting coil and permanent magnet are arranged between described outer yoke and interior yoke.Outer yoke and interior yoke can adopt the small-sized yoke of polylith to slap together, so that the layout of the installation of inside and outside yoke and superconducting coil, permanent magnet.Described outer yoke and interior yoke interfix by bonding mode.
Compared with prior art, the beneficial effects of the utility model are embodied in:
(1) the utility model adopts and arrange the relaying Linearkompressor between multistage vascular refrigerator high temperature section regenerator cold junction and low-temperature zone regenerator hot junction, can realize the further increase of multistage vascular refrigerator high temperature section regenerator cold junction pressure ratio, and then obtain larger pressure ratio at multistage vascular refrigerator cold junction, finally improve the efficiency of multistage vascular refrigerator.
(2) the utility model is owing to having adopted superconducting coil, eliminated the copper loss caused by resistance in the linear electric machine of relaying Linearkompressor employing, effectively improved the efficiency of compressor, so adopt the multistage vascular refrigerator complete machine of relaying Linearkompressor will there is higher efficiency, there is compact conformation, life-span length, high reliability simultaneously.
The accompanying drawing explanation
The structural representation of the multistage vascular refrigerator that Fig. 1 is employing relaying Linearkompressor of the present utility model.
The structural representation that Fig. 2 is a kind of embodiment of relaying Linearkompressor in multistage vascular refrigerator shown in Fig. 1.
The structural representation that Fig. 3 is the second embodiment of relaying Linearkompressor in multistage vascular refrigerator shown in Fig. 1.
The specific embodiment
As shown in Figure 1: a kind of multistage vascular refrigerator that adopts the relaying Linearkompressor comprises: compressor C, regenerator hot end heat exchanger HX1, high temperature section regenerator RG1, high temperature section regenerator cool end heat exchanger HX2, one-level vascular PT1, one-level vascular hot-side heat exchanger HX3, one-level inertia tube I1, one-level air reservoir R1, superconduction relaying Linearkompressor C2, low-temperature zone regenerator RG2, low-temperature zone regenerator cool end heat exchanger HX4, secondary vascular PT2, secondary vascular hot-side heat exchanger HX5, secondary inertia tube I2, secondary air reservoir R2, compressor C and regenerator hot end heat exchanger HX1, high temperature section regenerator RG1, high temperature section regenerator cool end heat exchanger HX2, one-level vascular PT1, one-level vascular hot-side heat exchanger HX3, one-level inertia tube I1 is connected successively with one-level air reservoir R1, high temperature section regenerator cool end heat exchanger HX2 and superconduction relaying Linearkompressor C2, low-temperature zone regenerator RG2, low-temperature zone regenerator cool end heat exchanger HX4, secondary vascular PT2, secondary vascular hot-side heat exchanger HX5, secondary inertia tube I2 is connected successively with secondary air reservoir R2, and the superconducting coil of superconduction relaying Linearkompressor adopts the superconductor of critical-temperature higher than 20K, and need be operated in it below critical-temperature, be filled with the backheat filler (as stainless steel cloth etc.) of high volumetric specific heat capacity in high temperature section regenerator RG1, low-temperature zone regenerator RG2 is filled with the backheat filler of high volumetric specific heat capacity (as lead shot, Er
3ni etc.), after each parts connect according to foregoing description, fill helium to predetermined pressure in system, connect the power supply of compressor C and superconduction relaying Linearkompressor C2, by frequency modulator, the operating frequency of compressor C and superconduction relaying Linearkompressor C2 is adjusted to resonant frequency, just can realizes the highly effective refrigeration of vascular refrigerator.
High temperature section regenerator cool end heat exchanger HX2 is wholely set structure; Can be also Split type structure, be separately positioned on high temperature section regenerator RG1 cold junction and one-level vascular PT1 cold junction, then by runner, both are communicated with.Low-temperature zone regenerator cool end heat exchanger HX4 is wholely set structure; Can be perhaps Split type structure, be separately positioned on the cold junction of low-temperature zone regenerator RG2 cold junction and secondary vascular PT2, then by runner, both are communicated with.
The running of the multistage vascular refrigerator of the employing relaying Linearkompressor of present embodiment is: the high temperature and high pressure gas of compressed machine C compression is cooled to room temperature through regenerator hot end heat exchanger HX1, the high temperature section of flowing through afterwards regenerator RG1 carries out heat exchange with backheat filler wherein, the gas that arrives the regenerator cold junction is cooled to lower temperature, a cryogenic gas part enters in one-level vascular PT1, swell refrigeration in one-level vascular PT1, temperature reduces, there is the temperature difference in gas at turnover high temperature section regenerator cool end heat exchanger HX2, thereby realize refrigeration effect, and at high temperature section regenerator cool end heat exchanger HX2 place, cold is taken out.From high temperature section regenerator RG1, other a part of gas out is after superconduction relaying Linearkompressor C2 compresses again, pressure ratio further increases, after after low-temperature zone regenerator RG2 heat exchange, enter secondary vascular PT2 swell refrigeration, temperature reduces, there is the temperature difference in gas at turnover low-temperature zone regenerator cool end heat exchanger HX4, thereby realizes refrigeration effect, and at low-temperature zone regenerator cool end heat exchanger HX4 place, cold is taken out.Wherein inertia tube and air reservoir are the phase modulation structures, its objective is in order to obtain suitable phase angle between pressure wave and mass flow in regenerator.
Above-mentioned superconduction relaying Linearkompressor C2 can select a kind of of following two kinds of embodiments:
The superconduction relaying Linearkompressor C2 of the first structure:
As shown in Figure 2: a kind of superconduction relaying moving-magnetic type Linearkompressor, in this compressor, adopt the moving-magnetic type motor that power is provided, comprise: compressor case S, fixed mount G, cylinder body PC, two the first flat spring F1, two superconducting coil SC, two piston P, two yoke Y, two permanent magnet M and two permanent magnet support H, this compressor is symmetrical structure.
Shell S is comprised of two symmetrically arranged stavings, and each staving opening is provided with flange face.Fixed mount G is loop configuration, and fixed mount G sidewall is provided with gas flow; Fixed mount G two ends are provided with respectively the screw that the flange face with two stavings interfixes, and utilize bolt two stavings and fixed mount can be interfixed.Fixed mount G inwall is provided with the fixed lobe extended to center, for stationary housing.
Cylinder body PC is comprised of two symmetries and the coaxial cylindrical shell arranged, and two cylindrical shell one ends are fixing with the fixed lobe sealing of fixed mount G inwall respectively.Yoke Y is comprised of outer yoke and interior yoke, and superconducting coil SC is fixed between outer yoke and interior yoke, and permanent magnet M slide arrangement is between interior yoke and outer yoke; Outer yoke and fixed mount G interfix by stay bolt, and interior yoke and cylinder body PC interfix by stay bolt.The first flat spring F1 outside interfixes by fixed support and outer yoke, and inboard interfixes by bolt with permanent magnet support H and piston P end.The first flat spring F1, superconducting coil SC, permanent magnet support H, permanent magnet support H, piston P, cylinder body PC, yoke Y and permanent magnet M are arranged in the enclosed cavity of compressor case S composition, superconducting coil SC adopts the superconductor of critical-temperature higher than 20K, and need be operated in it below critical-temperature.Guarantee clearance seal between piston P and cylinder body PC, after each parts connect according to foregoing description, connect the power supply of superconducting coil SC, by frequency modulator, the operating frequency of relaying compressor is adjusted to resonant frequency, just can realize the compression again of gas.
The superconduction relaying Linearkompressor C2 of the second structure:
As shown in Figure 3: a kind of superconduction relaying moving-coil type Linearkompressor, in this compressor, adopt moving coil motor that power is provided, comprise compressor case S, fixed mount G, two the second flat spring F2, two the 3rd flat spring F3, two superconducting coil SC, two superconducting coil fixed mount H2, two yoke Y, two piston P, cylinder body PC and two permanent magnet M; Fixed form and the first structure are basic identical, difference is: permanent magnet M is fixed in yoke Y, yoke Y is fixed on compressor case S, the second flat spring F2 outside is fixed on compressor case S, the second flat spring F2 inboard is connected with piston P end, superconducting coil fixed mount H2, the 3rd flat spring F3 outside is fixed with fixed mount G, and the inboard end with the close cylinder body PC of piston interfixes; Guarantee clearance seal between piston P and cylinder body PC, the second flat spring F2, the 3rd flat spring F3, superconducting coil SC, piston P, yoke Y, cylinder body PC and permanent magnet M are arranged in the enclosed cavity of compressor case S composition, superconducting coil SC adopts the superconductor of critical-temperature higher than 20K, and need be operated in it below critical-temperature.After each parts connect according to foregoing description, connect the power supply of superconducting coil SC, by frequency modulator, the operating frequency of relaying compressor is adjusted to resonant frequency, just can realize the compression again of gas.
Claims (10)
1. a multistage vascular refrigerator that adopts the relaying Linearkompressor, comprise the compressor (C) be communicated with successively, regenerator hot end heat exchanger (HX1), high temperature section regenerator (RG1), high temperature section regenerator cool end heat exchanger (HX2), one-level vascular (PT1), one-level vascular hot-side heat exchanger (HX3) and one-level phase modulation parts, and the low-temperature zone regenerator (RG2) be communicated with successively, low-temperature zone regenerator cool end heat exchanger (HX4), secondary vascular (PT2), secondary vascular hot-side heat exchanger (HX5) and secondary phase modulation parts, it is characterized in that, the cold junction of described high temperature section regenerator (RG1) is communicated with the hot junction of low-temperature zone regenerator (RG2) by pipeline simultaneously, this pipeline is provided with for compression by the relaying Linearkompressor of pipeline gas.
2. the multistage vascular refrigerator of employing relaying Linearkompressor according to claim 1, is characterized in that, described one-level phase modulation parts and secondary phase modulation parts are inertia tube and the air reservoir be communicated with corresponding vascular hot-side heat exchanger respectively.
3. the multistage vascular refrigerator of employing relaying Linearkompressor according to claim 1, is characterized in that, described relaying Linearkompressor comprises:
The cylinder body of both ends open (PC), this cylinder side wall is provided with the gas outlet with described pipeline connection;
Coaxially be arranged on two pistons (P) in cylinder body (PC) both ends open;
Drive respectively two linear electric machines of two pistons (P) operation;
Coil in described two linear electric machines is superconducting coil.
4. the multistage vascular refrigerator of employing relaying Linearkompressor according to claim 3, is characterized in that, described two linear electric machines are independently moving-magnetic type linear electric machine, moving-coil type linear electric machine or moving-iron type linear electric machine respectively.
5. the multistage vascular refrigerator of employing relaying Linearkompressor according to claim 4, is characterized in that, described moving-magnetic type linear electric machine comprises:
With the relatively-stationary yoke of cylinder body (PC) (Y);
Be fixed on the superconducting coil (SC) be connected with power supply in yoke (Y);
Permanent magnet (M);
For the permanent magnet support (H) of fixing described permanent magnet (M), this permanent magnet support (H) interfixes with corresponding piston (P) by the first flat spring (F1).
6. the multistage vascular refrigerator of employing relaying Linearkompressor according to claim 4, is characterized in that, described moving-coil type linear electric machine comprises:
With the relatively-stationary yoke of cylinder body (PC) (Y);
Be fixed on the permanent magnet (M) in yoke (Y);
The superconducting coil be connected with power supply (SC);
For the coil brace (H2) of fixing described superconducting coil (SC), this coil brace interfixes with corresponding piston (P) by the second flat spring (F2).
7. according to the multistage vascular refrigerator of the described employing relaying of claim 5 or 6 Linearkompressor, it is characterized in that, also comprise the shell (S) with blow vent, described cylinder body (PC) is fixed in shell (S) by the fixed mount with gas flow (G); Described yoke (Y) and coil brace (H2) interfix with described fixed mount (G) simultaneously; Also be respectively equipped with the 3rd flat spring (F3) between described fixed mount (G) and two pistons (P).
8. the multistage vascular refrigerator of employing relaying Linearkompressor according to claim 7, is characterized in that, described fixed mount (G) is loop configuration, and this fixed mount outer wall is provided with positioning convex ring; Described shell (S) is comprised of symmetrically arranged two stavings, and each staving opening is equipped with the flange face for cooperatively interacting with described positioning convex ring.
9. the multistage vascular refrigerator of employing relaying Linearkompressor according to claim 7, it is characterized in that, described yoke (Y) is comprised of outer yoke and the interior yoke of annular, and described superconducting coil (SC) and permanent magnet (M) are arranged between described outer yoke and interior yoke.
10. the multistage vascular refrigerator of employing relaying Linearkompressor according to claim 9, is characterized in that, described outer yoke and interior yoke interfix by bonding mode.
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| CN201220686742.0U CN202973643U (en) | 2012-12-11 | 2012-12-11 | Multi-stage pulse tube refrigerator adopting relay linear compressor |
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| CN201220686742.0U CN202973643U (en) | 2012-12-11 | 2012-12-11 | Multi-stage pulse tube refrigerator adopting relay linear compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102980321A (en) * | 2012-12-11 | 2013-03-20 | 浙江大学 | Multi-stage pulse tube refrigerator adopting relay linear compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980321A (en) * | 2012-12-11 | 2013-03-20 | 浙江大学 | Multi-stage pulse tube refrigerator adopting relay linear compressor |
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