CN203190707U - Aqueduct/Stirling gas coupled composite type multistage refrigerating machine - Google Patents
Aqueduct/Stirling gas coupled composite type multistage refrigerating machine Download PDFInfo
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- CN203190707U CN203190707U CN 201320056742 CN201320056742U CN203190707U CN 203190707 U CN203190707 U CN 203190707U CN 201320056742 CN201320056742 CN 201320056742 CN 201320056742 U CN201320056742 U CN 201320056742U CN 203190707 U CN203190707 U CN 203190707U
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Abstract
The utility model discloses an aqueduct/Stirling gas coupled composite type multistage refrigerating machine which comprises a Stirling refrigerating unit and an aqueduct refrigerating unit. The Stirling refrigerating unit and the aqueduct refrigerating unit are in gas coupled connection and driven by the same linear compressor, and an opening portion of an air cylinder of the Stirling refrigerating unit is sealed and fixed with a cold end heat exchanger of the aqueduct refrigerating unit. The end, where backheating stuff is arranged, of a discharger in the Stirling refrigerating unit sequentially penetrates through a hot end head exchanger, a first-stage aqueduct refrigerating machine heat regenerator of the aqueduct refrigerating unit and a first-stage cold end heat exchanger of the Stirling refrigerating unit to be arranged in the air cylinder. The discharger and the first-stage aqueduct refrigerating machine heat regenerator are coaxially arranged and are in sliding match. The aqueduct/Stirling gas coupled composite type multistage refrigerating machine takes all stages of performance into consideration so as to acquire more excellent performance and higher reliability. Compared with an existing multistage aqueduct refrigerating machine, the aqueduct/Stirling gas coupled composite type multistage refrigerating machine can use the control of the discharger to obtain larger pressure ratio at the cold end and further obtain lower refrigerating temperature and larger refrigerating capacity.
Description
Technical field
The utility model relates to a kind of compound refrigeration machine, specifically relates to a kind of vascular/Stirling gas compound multi-stage refrigerating machine that is coupled.
Background technology
The regenerative refrigerating technology is an important branch of low-temperature refrigeration technology, compare with other Refrigeration Techniques, owing to adopted the regenerator that is filled with high volumetric specific heat capacity filler, the regenerative refrigerating technology has efficient height, compact conformation, the advantages such as (liquid helium warm areas) that can obtain profound hypothermia, is used widely in fields such as army's national defense and military, energy medical treatment, low-temperature physics at present.
Sterlin refrigerator and vascular refrigerator are two kinds of typical regenerating type low-temperature refrigerators, they have been widely used in the space tasks at present, but these two kinds of types are only relative with the development of 35K warm area ripe at 80K at present, and still having bigger technical difficulty at 10K and following warm area, this makes the efficient backheat refrigeration machine of low temperature warm area become research difficult point and the focus in current cryogenic refrigeration field.
For obtaining the cryogenic temperature below the 10K, sterlin refrigerator must adopt 3 grades even more multistage structure, and too much progression causes its displacer long, owing to adopt the clearance seal of spacing minimum (about 10 μ m) between the displacer in the Stirling decompressor and the cylinder, simultaneously because displacer leap warm area is big, material property changes violent, cause long displacer can't guarantee gap between piston and the cylinder, very easily cause wearing and tearing, cause to obtain high reliability and long-life, thereby its application is limited in the above warm area of 20K and two-layer configuration.Simultaneously, theory analysis shows for philip refrigerator, the optimized operation parameter of different refrigeration warm area correspondences is also different, as parameters such as the blowing pressures, so for the multi-stage stirling refrigeration machine, for obtaining lower cryogenic temperature and bigger refrigerating capacity, can't take into account performance at different levels in the design of multi-stage stirling refrigeration machine with in optimizing, can't guarantee that namely each grade all is operated under the optimum operating mode, so can only sacrifice the realization that the performance of high temperature level guarantees low temperature level performance, thereby limit the further raising of multi-stage stirling refrigeration machine efficient.
Compare with sterlin refrigerator, vascular refrigerator has higher reliability owing to do not have moving component at low temperatures, and the design of multilevel hierarchy and make more conveniently, makes vascular refrigerator obtain extensive use in the space exploration field.The cold junction pressure ratio is parameter with decisive role in the philip refrigerator, and in certain regenerator physical dimension scope, the performance of philip refrigerator enlarges markedly along with the increase of cold junction pressure ratio.But, owing to lack the active pm mode that is similar to the ejector in the sterlin refrigerator, the bigger pressure loss that closely knit backheat filler brings in the regenerator in addition, cause vascular refrigerator to obtain bigger pressure ratio at its cold junction, thereby make vascular refrigerator also can't obtain to be lower than the cryogenic temperature of 10K efficiently, for obtaining 10K and following cryogenic temperature, vascular refrigerator generally need adopt three grades structure, the cryogenic temperature that obtains the 4K warm area then needs level Four and more multistage structure, must adopt expensive helium-3 gas as refrigeration working medium simultaneously.
As mentioned above, current sterlin refrigerator and vascular refrigerator all can't obtain to be lower than the cryogenic temperature of 10K efficiently, its main cause is the multi-stage stirling refrigeration machine has been sacrificed the high temperature level owing to the realization that will guarantee low temperature level performance performance, vascular refrigerator is owing to lack the bigger pressure loss in active phase modulating mechanism and the regenerator, cause and to obtain bigger pressure ratio at cold junction, thereby make it can't obtain lower cryogenic temperature efficiently.
The utility model content
The utility model provides a kind of vascular/Stirling gas compound multi-stage refrigerating machine that is coupled, all can't efficiently obtain to be lower than the technical difficulty of 10K cryogenic temperature at current sterlin refrigerator and vascular refrigerator, this refrigeration machine can be taken into account performance at different levels, avoid the excessive technical barrier that causes clearance seal to guarantee of displacer length simultaneously, thereby can obtain more excellent performance and the reliability of Geng Gao.
A kind of vascular/Stirling gas compound multi-stage refrigerating machine that is coupled, comprise stirling refrigeration unit and pulse tube refrigeration unit, be of coupled connections by gas between described stirling refrigeration unit and the pulse tube refrigeration unit and driven by same Linearkompressor, and the opening of the cylinder of stirling refrigeration unit and pulse tube refrigeration unit cool end heat exchanger sealing and fixing; The end that displacer in the described stirling refrigeration unit is equipped with the backheat filler is passed first order vascular refrigerator regenerator and the first order cool end heat exchanger of hot end heat exchanger, vascular refrigerator unit successively, and places in the described cylinder; Described displacer and the coaxial setting of first order vascular refrigerator regenerator, and be slidingly matched.
But the ejector that has an ACTIVE CONTROL in the cold chamber of sterlin refrigerator, can realize the control of ejector stroke by the control of associated drives parts, thereby can remedy the pressure loss that closely knit backheat filler brings in the regenerator in sizable degree, thereby the cold junction at sterlin refrigerator obtains bigger pressure ratio, and the cold junction pressure ratio is a very important decisive parameter for philip refrigerator, big cold junction pressure ratio can be brought more excellent performance, and vascular refrigerator adopts the passive modulation phase structure, there is not moving component, can be arranged in different warm areas comparatively easily, so vascular refrigerator and sterlin refrigerator are coupled, wherein vascular refrigerator is as the first order, sterlin refrigerator is as the second level, so just, can utilize both advantages, make first order vascular refrigerator be operated in optimum state, and second level sterlin refrigerator obtains bigger pressure ratio at its cold junction, solved that the multi-stage stirling refrigeration machine can't be taken into account performances at different levels and the vascular refrigerator pressure loss can't obtain the shortcoming of big cold junction pressure ratio greatly, and then adopted two-layer configuration to obtain to be lower than the cryogenic temperature of 10K efficiently.
Described pulse tube refrigeration unit can be selected the vascular refrigerator structure of single-stage or multilevel hierarchy for use, layout and installation for ease of equipment, as preferably, described pulse tube refrigeration unit is the single-stage pulse tube refrigerator structure, comprises Linearkompressor, exports hot end heat exchanger, first order vascular refrigerator regenerator, first order cool end heat exchanger, first order vascular, first order vascular hot-side heat exchanger and the first order phase modulation parts that are communicated with successively with Linearkompressor.
First order phase modulation parts can be selected other phase modulating mechanisms with identical phase modulation function for use, are used for the interior mass flow of corresponding regenerator and the adjustment of pressure wave phase place, guarantee the stable and high effective operation of system.As preferably, described first order phase modulation parts are the first order inertia tube that is communicated with first order vascular hot-side heat exchanger of an end and the first order air reservoir that is communicated with the first order inertia tube other end.
Described stirling refrigeration unit comprises Linearkompressor, exports expansion unit, hot end heat exchanger, cylinder and the second level cool end heat exchanger that is communicated with successively with Linearkompressor, is provided with the displacer drive motors that drives the displacer motion in the expansion unit.For obtaining lower cryogenic temperature, as the liquid helium warm area, can connect extra third level vascular refrigerator at the cold junction of above-mentioned second level sterlin refrigerator, because helium viscosity at low temperatures is much smaller than high temperature, so the cold junction pressure ratio that second level sterlin refrigerator cold junction is bigger can be close to the break-even cold junction that is passed to third level vascular refrigerator, thereby obtain the liquid helium warm area efficiently.So as preferred, described vascular/Stirling gas compound multi-stage refrigerating machine that is coupled also comprises third level vascular refrigerator regenerator, third level cool end heat exchanger, third level vascular, third level vascular hot-side heat exchanger and the third level phase modulation parts that are communicated with the outlet of second level cool end heat exchanger.
Third level phase modulation parts can select for use other to have the phase modulating mechanism of identical phase modulation function, be used for the interior mass flow of corresponding regenerator and the adjustment of pressure wave phase place, the stable and high effective operation of assurance system, as preferably, described third level phase modulation parts are third level inertia tube and the third level air reservoir that is communicated with the described third level vascular hot-side heat exchanger of an end.Described third level phase modulation parts link to each other by heat bridge with described second level cool end heat exchanger.
Owing to adopt the structure of gas coupling between at different levels, complete machine structure is very compact, high and life-span of the reliability that has of vascular refrigerator self such as grows at advantage in addition, simultaneously since in the displacer length of the sterlin refrigerator that the structure that the utility model proposes adopts and the space field two-stage sterlin refrigerator commonly used identical, so do not exist amount of deflection excessive and cause the problem that axiality can't guarantee between cylinder and the displacer, so the vascular that the utility model proposes/Stirling gas coupling multistage refrigeration machine is a kind of novel efficient high reliability close-coupled profound hypothermia space refrigeration machine that use in the space that satisfies.
Prior art is compared, and the beneficial effects of the utility model are embodied in:
Compare with existing multi-stage stirling refrigeration machine, the vascular that the utility model proposes/Stirling gas compound multi-stage refrigerating machine that is coupled can be taken into account performance at different levels, avoid the excessive technical barrier that causes clearance seal to guarantee of displacer length simultaneously, thereby can obtain more excellent performance and the reliability of Geng Gao; Compare with existing multistage vascular refrigerator, the vascular that the utility model proposes/Stirling gas compound multi-stage refrigerating machine that is coupled can the control by displacer obtain bigger pressure ratio at cold junction, thereby can obtain lower cryogenic temperature and bigger refrigerating capacity.
Description of drawings
Fig. 1 is the be coupled a kind of structural representation of embodiment of compound multi-stage refrigerating machine of vascular of the present utility model/Stirling gas.
Fig. 2 is the be coupled structural representation of another kind of embodiment of compound multi-stage refrigerating machine of vascular of the present utility model/Stirling gas.
Fig. 3 is the be coupled structural representation of the third embodiment of compound multi-stage refrigerating machine of vascular of the present utility model/Stirling gas.
The specific embodiment
Embodiment 1
As shown in Figure 1, a kind of two-stage vascular/Stirling gas compound multi-stage refrigerating machine that is coupled comprises: Linearkompressor 1, displacer drive motors 2, expansion unit 3, displacer 4, hot end heat exchanger 5, first order vascular refrigerator regenerator 6, first order cool end heat exchanger 7, first order vascular 8, first order vascular hot-side heat exchanger 9, first order inertia tube 10, first order air reservoir 11, second level sterlin refrigerator cylinder 12, second level cool end heat exchanger 13.
The annexation of above-mentioned each parts is as follows: Linearkompressor 1 is connected with hot end heat exchanger 5 with expansion unit 3 respectively, displacer drive motors 2 is arranged in the expansion unit 3 and with displacer 4 and is connected, be used for driving displacer 4 operations, hot end heat exchanger 5 and first order vascular refrigerator regenerator 6, first order cool end heat exchanger 7, second level sterlin refrigerator cylinder 12, second level cool end heat exchanger 13 connects successively, first order cool end heat exchanger 7 and first order vascular 8, first order vascular hot-side heat exchanger 9, first order inertia tube 10, first order air reservoir 11 connects successively, displacer 4 passes from first order vascular refrigerator regenerator 6 and first order cool end heat exchanger 7 middle parts and is arranged in the second level sterlin refrigerator cylinder 12, and guarantee clearance seal with the wall of second level sterlin refrigerator cylinder 12, the backheat filler of second level sterlin refrigerator is filled in the displacer 4, and the two ends of filling backheat filler part in the displacer 4 have aperture for gas communication.
The running of the compound multi-stage refrigerating machine of the vascular/Stirling of present embodiment is:
High pressure phase, in hot end heat exchanger 5, be cooled to normal temperature high voltage by the high temperature and high pressure gas after Linearkompressor 1 compression, enter then in the first order vascular refrigerator regenerator 6, and carry out heat exchange with the backheat filler of wherein filling, gas temperature reduces, a part of gas enters first order vascular 8 successively in first order cool end heat exchanger 7, first order vascular hot-side heat exchanger 9, first order inertia tube 10 and first order air reservoir 11, then system pressure reduces, this portion gas is successively by first order air reservoir 11, first order inertia tube 10, first order vascular hot-side heat exchanger 9, first order vascular 8, first order cool end heat exchanger 7, first order vascular refrigerator regenerator 6 and hot end heat exchanger 5 return in the Linearkompressor 1, because there is the temperature difference in the gas of turnover first order cool end heat exchanger 7, produces refrigeration effect thus.
Another part gas enters the displacer 4 that is arranged in second level sterlin refrigerator cylinder 12 by first order cool end heat exchanger 7 by the aperture of filling backheat filler two ends partly in the displacer 4, be arranged in the displacer drive motors 2 that decompressor group 3 is connected with displacer 4 bottoms by control, realization is to the Stroke Control of displacer 4, this portion gas carries out heat exchange with the backheat filler that is positioned at displacer 4 ends simultaneously, cold junction at second level sterlin refrigerator cylinder 12 expands simultaneously, thereby the generation refrigeration effect, refrigerating capacity is taken out by second level cool end heat exchanger 13.
Embodiment 2:
As shown in Figure 2, a kind of tertiary vein pipe/Stirling gas compound refrigeration machine that is coupled is with the difference of embodiment 1: be connected third level vascular refrigerator regenerator 14, third level cool end heat exchanger 15, third level vascular 16, third level vascular hot-side heat exchanger 17, third level inertia tube 18 and third level air reservoir 19 successively behind the second level of embodiment 1 cool end heat exchanger 13.By adding third level vascular refrigerator, can in third level cool end heat exchanger 15, obtain lower cryogenic temperature, thereby satisfy the more application demand of low temperature.
Embodiment 3:
As shown in Figure 3, a kind of tertiary vein pipe/Stirling gas compound refrigeration machine that is coupled, be that with the difference of embodiment 2 second level cool end heat exchanger 13, third level vascular hot-side heat exchanger 17, third level inertia tube 18 and third level air reservoir 19 are connected with heat bridge 20 respectively, by third level inertia tube 18 and third level air reservoir 19 are cooled to lower temperature, can obtain bigger phase modulation angle, thereby make the compound refrigeration machine of this vascular/Stirling more efficient.
Claims (7)
1. vascular/Stirling gas compound multi-stage refrigerating machine that is coupled, comprise stirling refrigeration unit and pulse tube refrigeration unit, it is characterized in that, be of coupled connections by gas between described stirling refrigeration unit and the pulse tube refrigeration unit and driven by same Linearkompressor (1), and first order cool end heat exchanger (7) sealing and fixing of the opening of the cylinder of stirling refrigeration unit (12) and pulse tube refrigeration unit; The end that displacer (4) in the described stirling refrigeration unit is equipped with the backheat filler is passed first order vascular refrigerator regenerator (6) and the first order cool end heat exchanger (7) of hot end heat exchanger (5), vascular refrigerator unit successively, and places in the described cylinder (12); Described displacer (4) and the coaxial setting of first order vascular refrigerator regenerator (6), and be slidingly matched.
2. vascular according to claim 1/Stirling gas compound multi-stage refrigerating machine that is coupled, it is characterized in that described pulse tube refrigeration unit comprises Linearkompressor (1), exports hot end heat exchanger (5), first order vascular refrigerator regenerator (6), first order cool end heat exchanger (7), first order vascular (8), first order vascular hot-side heat exchanger (9) and the first order phase modulation parts that are communicated with successively with Linearkompressor.
3. vascular according to claim 2/Stirling gas compound multi-stage refrigerating machine that is coupled, it is characterized in that described first order phase modulation parts are the first order inertia tube (10) that is communicated with first order vascular hot-side heat exchanger (9) of an end and the first order air reservoir (11) that is communicated with first order inertia tube (10) other end.
4. vascular according to claim 1/Stirling gas compound multi-stage refrigerating machine that is coupled, it is characterized in that, described stirling refrigeration unit comprises Linearkompressor (1), exports expansion unit (3), hot end heat exchanger (5), cylinder (12) and the second level cool end heat exchanger (13) that is communicated with successively with Linearkompressor (1), is provided with the displacer drive motors (2) that drives displacer (4) motion in the expansion unit (3).
5. vascular according to claim 4/Stirling gas compound multi-stage refrigerating machine that is coupled, it is characterized in that, also comprise the third level vascular refrigerator regenerator (14), third level cool end heat exchanger (15), third level vascular (16), third level vascular hot-side heat exchanger (17) and the third level phase modulation parts that are communicated with second level cool end heat exchanger (13) outlet.
6. vascular according to claim 5/Stirling gas compound multi-stage refrigerating machine that is coupled, it is characterized in that described third level phase modulation parts are third level inertia tube (18) and the third level air reservoir (19) that is communicated with the described third level vascular hot-side heat exchanger of an end (17).
7. according to claim 5 or the 6 described vascular/Stirling gas compound multi-stage refrigerating machine that is coupled, it is characterized in that described third level phase modulation parts link to each other by heat bridge with described second level cool end heat exchanger (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320056742 CN203190707U (en) | 2013-01-30 | 2013-01-30 | Aqueduct/Stirling gas coupled composite type multistage refrigerating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320056742 CN203190707U (en) | 2013-01-30 | 2013-01-30 | Aqueduct/Stirling gas coupled composite type multistage refrigerating machine |
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| CN203190707U true CN203190707U (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320056742 Withdrawn - After Issue CN203190707U (en) | 2013-01-30 | 2013-01-30 | Aqueduct/Stirling gas coupled composite type multistage refrigerating machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062952A (en) * | 2013-01-30 | 2013-04-24 | 浙江大学 | Pulse tube/Stirling gas coupling composite multi-stage refrigerator |
| CN103759452A (en) * | 2014-01-17 | 2014-04-30 | 中国科学院上海技术物理研究所 | Linear and coaxial pulse tube cold finger structure driven by single linear compressor and manufacturing method thereof |
| CN105928238A (en) * | 2016-05-11 | 2016-09-07 | 宁波华斯特林电机制造有限公司 | Head tank of Stirling circulator |
-
2013
- 2013-01-30 CN CN 201320056742 patent/CN203190707U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062952A (en) * | 2013-01-30 | 2013-04-24 | 浙江大学 | Pulse tube/Stirling gas coupling composite multi-stage refrigerator |
| CN103062952B (en) * | 2013-01-30 | 2014-12-03 | 浙江大学 | Pulse tube/Stirling gas coupling composite multi-stage refrigerator |
| CN103759452A (en) * | 2014-01-17 | 2014-04-30 | 中国科学院上海技术物理研究所 | Linear and coaxial pulse tube cold finger structure driven by single linear compressor and manufacturing method thereof |
| CN103759452B (en) * | 2014-01-17 | 2016-01-13 | 中国科学院上海技术物理研究所 | Separate unit linear compressor drives straight line and coaxial pulse-tube coldfinger and manufacture method |
| CN105928238A (en) * | 2016-05-11 | 2016-09-07 | 宁波华斯特林电机制造有限公司 | Head tank of Stirling circulator |
| CN105928238B (en) * | 2016-05-11 | 2018-08-21 | 宁波华斯特林电机制造有限公司 | A kind of head tank of Stirling circulator |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130911 Effective date of abandoning: 20141203 |
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| RGAV | Abandon patent right to avoid regrant |