CN206094628U - By cryocooler of transmission union coupling compressor arrangement with regenerator - Google Patents
By cryocooler of transmission union coupling compressor arrangement with regenerator Download PDFInfo
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- CN206094628U CN206094628U CN201621071855.4U CN201621071855U CN206094628U CN 206094628 U CN206094628 U CN 206094628U CN 201621071855 U CN201621071855 U CN 201621071855U CN 206094628 U CN206094628 U CN 206094628U
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- China
- Prior art keywords
- regenerator
- heat exchanger
- transfer tube
- temperature
- cryo refrigerator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses a by cryocooler of transmission union coupling compressor arrangement with regenerator, backheat formula compressor arrangement, transmission pipe, precooling heat exchanger, low temperature section regenerator, regenerator cold end heat exchanger, connecting pipe, canalis haemalis cold end heat exchanger, canalis haemalis and phase modulation mechanism including connecting gradually still include: the cryogenic refrigeration module, be used for to the precooling heat exchanger volume of providing the precooling, adiabatic regional, be used for with the precooling heat exchanger is isolated with ambient temperature, the utility model discloses replace high temperature section regenerator to connect the backheat formula compressor arrangement of room temperature end and the precooling heat exchanger of low temperature end with transmitting the pipe, reduce regenerator conductive heat loss, the loss of gas -solid heat transfer loss harmony merit, improve cryocooler's efficiency.
Description
Technical field
This utility model is related to Cryo Refrigerator technical field, more particularly to a kind of to be connected compressor and returned by transfer tube
The Cryo Refrigerator of hot device.
Background technology
Because military affairs, space exploration etc. were required increasingly the cryogenic temperature of low temperature environment, reliability, weight and life-span etc.
Height, develop efficient, the compact Cryo Refrigerator of below 20K warm areas has become the study hotspot of space low-temperature refrigeration technology.Arteries and veins
Control cold cold end movement-less part, has the advantages that simple compact conformation, low vibration, low abrasion, long-life, meets many spies
Different requirement of the occasion to cryogenic refrigeration reliability.
Two-stage or multi-stage pulse tube refrigeration machine can reach very low cryogenic temperature to meet the demand of application, coupling between current level
Conjunction mode mainly has two kinds of gas coupling and thermal coupling, such as Fig. 1 and Fig. 2.Also early there is application using the scheme of other low-temperature receiver coolings, its
Principle is similar to thermal coupling, i.e., the regenerator middle part of low-temperature level reduces low-temperature level by Intermediate Heat Exchanger by high-temperature level pre-cooling
The following regenerator unit mass enthalpy stream of Intermediate Heat Exchanger, so as to improve net refrigerating capacity, reduces zero load cryogenic temperature.For basis
Research, thermal coupling structure enjoys favor due to analysis is disturbed less, be easy between level, and in recent years, the application of thermal coupling structure is more next
It is more.
Regenerator is the core component of philip refrigerator, and it is pumped certain heat from cold end by consumption sound work(
To hot junction.According to the function of regenerator, it is divided into pre-cooling regenerator and work regenerator.Pre-cooling regenerator is aimed at, and is being met
On the premise of pre- cold, as much as possible to cold end conveying sound work(, the loss of reduction sound work(；And the regenerator that works then must will increase sound
Work(and reduction enthalpy stream, the balanced consideration of the aspect of conductive heat loss two.Low-temperature level regenerator is damaged to reduce conductive heat loss and gas-solid heat exchange
Lose, need longer regenerator, but regenerator length increase then flow resistance increase, the sound work(for causing pre-cooling regenerator to lose increase,
The sound work(for reaching work regenerator reduces so as to which phase modulation is difficult and refrigerating capacity reduces.
The sound work((PV work() of refrigeration machine generally produces input system by Linearkompressor in room temperature, and the heat of refrigeration machine is usual
Room temperature discharge system is transferred to by regenerator.For preferable kind of refrigeration cycle (inverse Carnot cycle), coefficient of refrigerating performanceOnly with high temperature heat source THWith low-temperature heat source TCTemperature it is relevant, high temperature heat source temperature
Spend lower, COPCarnotIt is higher.Space application refrigeration machine is in the cosmic microwave radiation background of about 3K, it is possible to achieve low temperature is arranged
Heat, and the at present research of low temperature heat extraction refrigeration machine and using considerably less.
In a blank pipe, the pressure wave of Oscillating flow working medium and the phase contrast of quality stream are long with blank pipe because of the inertia effect
Degree changes, and because blank pipe resistance it is little, hardly loss sound work(.Therefore the transfer tube being of convenient length, adjustable compressor outlet
Phase angle so as to quality stream phase-lead in pressure wave phase, so as to reach the purpose for driving vascular refrigerator.
Utility model content
The utility model proposes a kind of Cryo Refrigerator for being connected compressor and regenerator by transfer tube, can reduce back
Hot device conductive heat loss, gas-solid heat exchange loss harmony work(loss, so as to improve the refrigerating efficiency of Cryo Refrigerator.
A kind of Cryo Refrigerator for being connected compressor and regenerator by transfer tube, including the back-heating type compression being sequentially connected
Device, transfer tube, precool heat exchanger device, low-temperature zone regenerator, regenerator cool end heat exchanger, connecting tube, vascular cold end heat exchanger, arteries and veins
Pipe and phase modulating mechanism, it is characterised in that also include：
Cryogenic refrigeration module, for providing pre- cold to the precool heat exchanger device；
Adiabatic zone, for the precool heat exchanger device and ambient temperature to be completely cut off.
When using, temperature is formed between precool heat exchanger device of the transfer tube under the back-heating type compressor and low temperature of indoor temperature end
Degree gradient, transmission sound work(.
This utility model at room temperature runs back-heating type compressor, and regenerator hot junction is placed under low temperature, is changed by pre-cooling
Hot device connects other cryogenic refrigeration module pre-coolings, and transfer tube replaces high temperature section regenerator, connects the compressor of indoor temperature end and low
Low-temperature zone regenerator hot junction under temperature, so as to low-temperature zone regenerator conductive heat loss, gas-solid heat exchange loss harmony work(loss can be reduced,
So as to improve the refrigerating efficiency of Cryo Refrigerator.
Cryogenic refrigeration module can adopt various ways, install for convenience and manufacture, it is preferred that the cryogenic refrigeration mould
Block is liquid low temperature working medium or refrigeration machine cold end.
In space application, universe low-temp radiating background can provide the cold of abundance.Consider it at aspects such as space applications
Development prospect, it is preferred that the cryogenic refrigeration module be universe low-temp radiating device.
Preferably, the precooling temperature of the cryogenic refrigeration module is liquid nitrogen temperature, and liquid nitrogen is simple to manufacture, low cost, easily
In acquisition, the cold that abundance can be provided for cryogenic refrigeration module.The warm area is also the temperature range of single stage work.
In general, regenerator cold end quality stream lags behind 30 ° of pressure wave (30 °), and regenerator hot junction quality stream is led over
When 30 ° of pressure wave (- 30 °), i.e. regenerator middle part quality stream is 0 ° with the phase contrast of pressure wave, the effectiveness of regenerator of regenerator is most
It is high.Through to the transmission length of tube and the design of sectional area, using acoustic effect in transfer tube, changing transmission intraductal working medium matter
The phase relation of amount stream and pressure wave, can be the optimum angle that low-temperature zone regenerator entrance obtains -30 ° in transfer tube outlet.It is right
Need in different phase changes, there are different selections to transmitting length of tube and diameter.In order to reduce transfer tube loss, preferably
Sectional area is 2 ρ c | U1|/|p1|, wherein, ρ is gas density in pipe, is approximately certain value, and c is the sound wave velocity of sound, U1For volume flow
Amount, p1For overpressure；In the range of λ/4～λ/2, wherein λ is wave length of sound in pipe to preferred length.The transfer tube exists
While the phase relation of optimization working medium quality stream and pressure wave, compressor output sound work(is transferred to into regenerator hot junction, is driven
Dynamic Cryo Refrigerator work, lifts Cryo Refrigerator refrigeration performance.
Cryo Refrigerator of the present utility model, by the phase between the power pressure ripple and quality stream that design transfer tube regulation
Potential difference, in regenerator porch -30 ° of optimum angle is reached, and the effectiveness of regenerator of low-temperature zone regenerator is improved, so as to lift low temperature
Refrigeration machine cooling performance.
The phase modulating mechanism is inertia tube and air reservoir or bidirection air intake valve group etc., it is preferred that the hot junction of the vascular, described
Phase modulating mechanism is connected with the precool heat exchanger device.Low temperature phase modulation strengthens phase modulation function, makes to obtain more preferable phase place point in refrigeration machine
Cloth, improves the performance of refrigeration machine.
Cryo Refrigerator of the present utility model is vascular refrigerator, it is preferred that the back-heating type compressor is G-M type pressures
Compression apparatus or stirling-type compressor.Vascular refrigerator cold head movement-less part and compact conformation, it is excellent with stability height etc.
Point.
Preferably, the Cryo Refrigerator is multi-stage pulse tube refrigeration machine, and multilevel hierarchy is that thermal coupling structure or gas are coupled
Structure.Series can be two-stage, three-level, level Four etc., to reach lower cryogenic temperature.
The back-heating type compressor is in room temperature environment, and the precool heat exchanger device is in low temperature environment, the transfer tube
Precool heat exchanger device under the back-heating type compressor and low temperature environment of connection room temperature environment.
Refrigeration machine more compact structure is made in order to improve, it is preferred that the connecting tube is U-tube.
For a refrigeration system, input work W, in low-temperature heat source TCRefrigerating capacity is produced, that is, is absorbed heatIn high temperature heat source TH
Discharge heatIts Carnot's cycle efficiency
It is only relevant with the temperature of high temperature heat source and low-temperature heat source.When certain cryogenic temperature is reached, high temperature heat source temperature
THLower, then its Carnot efficiency is higher.
If in medium temperature TM(TC＜ TM＜ TH) increase radiatingIt is fixed according to the first law of thermodynamics and thermodynamics second
Rule, the efficiency of Reversible Cycle：
More than COPCarnotIf increasing in multiple medium temperatures Ti(TC＜ Ti＜ TH, i=1,2,3 ...) and discharge heat Qi, then
The efficiency of the system Reversible Cycle increases with the increase of medium temperature.
Therefore, Cryo Refrigerator heat of the present utility model is discharged at low temperature, and the theoretical efficiency of refrigeration machine can be carried
Rise.
The beneficial effects of the utility model are as follows：
Cryo Refrigerator of the present utility model, the back-heating type compression of high temperature section regenerator connection indoor temperature end is replaced with transfer tube
Device and the precool heat exchanger device of low-temperature end, reduce regenerator conductive heat loss, gas-solid heat exchange loss harmony work(loss, improve low temperature system
The efficiency of cold.
Cryo Refrigerator of the present utility model, heat is excluded at low temperature, improves the theoretical efficiency of refrigeration machine, and it is more suitable
For space application.
Cryo Refrigerator of the present utility model, high temperature section regenerator, refrigeration machine structure are replaced with a blank pipe as transfer tube
Simply, and processing cost reduce.
Description of the drawings
Fig. 1 is the structural representation of traditional gas coupled mode vascular refrigerator level.
Fig. 2 is the structural representation of traditional thermal coupling type vascular refrigerator level.
Fig. 3 is refrigerator system Carnot cycle wire figure.
Fig. 4 is the structural representation of the refrigeration machine of transfer tube connection compressor of the present utility model and regenerator.
Wherein：
1st, back-heating type compressor, 2, transfer tube, 3, level cooler, 4, phase modulating mechanism, 5, high temperature section regenerator, 6, vascular,
7th, vascular cold end heat exchanger, 8, U-shaped connecting tube, 9, regenerator cool end heat exchanger, 10, low-temperature zone regenerator, 11, pre-cooling level it is U-shaped
Connecting tube, 12, precool heat exchanger device, 13, pre-cooling level vascular, 14, pre-cooling level vascular hot-side heat exchanger, 15, pre-cooling level phase modulating mechanism,
16th, pre-cooling level regenerator, 17, pre-cooling level level cooler, 18, vacuum insulation system.
Specific embodiment
As shown in figure 3, the Cryo Refrigerator of the present embodiment includes back-heating type compressor 1, transfer tube 2, precool heat exchanger device
12nd, low-temperature zone regenerator 10, regenerator cool end heat exchanger 9, U-shaped connecting tube 8, vascular cold end heat exchanger 7, vascular 6 and phase modifier
Structure 4 is sequentially connected with；The hot junction of vascular 6 and phase modulating mechanism 4 are connected with precool heat exchanger device 12.
The pre- cold of precool heat exchanger device 12 is provided by liquid low temperature working medium or refrigeration machine, and pre- cold can also be low by universe
Warm radiation background is provided, make low-temperature zone regenerator 10, the hot junction of vascular 6 and phase modulating mechanism 4 in precooling temperature (below 120K,
It is 77K if using Liquid nitrogen precooler) under, whole Cryo Refrigerator freezes at low temperature, reaches profound hypothermia.
Transfer tube 2 is an elongated hollow circular-tube, and to transfer tube 2 design of length and sectional area, design size are carried out
It is as follows：
Sectional area is 2 ρ c | U1|/|p1|, wherein, ρ is gas density in pipe, is approximately each definite value, and c is the sound wave velocity of sound,
U1For volume flow, p1For overpressure；In the range of λ/3, wherein λ is wave length of sound in pipe to length.
The low-temperature zone that transfer tube 2 connects under back-heating type compressor 1, precool heat exchanger device 12 and the precooling temperature of indoor temperature end is returned
Hot device 10, automatically forms in the axial direction thermograde.Start the back-heating type compressor 1 of indoor temperature end, transfer tube 2 will be produced under room temperature
Sound work(be almost transferred directly to without loss under low temperature, drive Cryo Refrigerator work.
For a refrigeration system, as shown in figure 3, input work W, in low-temperature heat source TCRefrigerating capacity is produced, that is, is absorbed heat
High temperature heat source THDischarge heatIts Carnot's cycle efficiency
It is only relevant with the temperature of high temperature heat source and low-temperature heat source.When certain cryogenic temperature is reached, high temperature heat source temperature
THLower, then its Carnot efficiency is higher.
If in medium temperature TM(TC＜ TM＜ TH) increase radiatingIt is fixed according to the first law of thermodynamics and thermodynamics second
Rule, the efficiency of Reversible Cycle：
More than COPCarnotIf increasing in multiple medium temperatures Ti(TC＜ Ti＜ TH, i=1,2,3 ...) and discharge heat Qi, then
The efficiency of the system Reversible Cycle increases with the increase of medium temperature.
Therefore, the Cryo Refrigerator heat of the present embodiment is discharged at low temperature, and the theoretical efficiency of refrigeration machine can be lifted.
Model is set up using philip refrigerator software for calculation Sage to the present embodiment Cryo Refrigerator as shown in Figure 4 to enter
Going and verify calculating, and set up model according to two-stage stirling-type vascular refrigerator as shown in Figure 2 carries out numerical simulation as right
Than, to draw and provide pre-cooling in 80K, in the case that 22K provides refrigerating capacity, the input PV work(of Cryo Refrigerator needs, the system for obtaining
Cold and coefficient of performance are as shown in table 1.Can be obtained by table 1, the cryogenic refrigeration engine efficiency of the present embodiment is improved significantly.
Table 1.
Claims (10)
1. a kind of Cryo Refrigerator for being connected compressor and regenerator by transfer tube, fills including the back-heating type compression being sequentially connected
Put, transfer tube, precool heat exchanger device, low-temperature zone regenerator, regenerator cool end heat exchanger, connecting tube, vascular cold end heat exchanger, vascular
And phase modulating mechanism, it is characterised in that also include：
Cryogenic refrigeration module, for providing pre- cold to the precool heat exchanger device；
Adiabatic zone, for the precool heat exchanger device and ambient temperature to be completely cut off.
2. as claimed in claim 1 by transfer tube connection compressor and the Cryo Refrigerator of regenerator, it is characterised in that institute
Cryogenic refrigeration module is stated for liquid low temperature working medium or refrigeration machine cold end.
3. as claimed in claim 1 by transfer tube connection compressor and the Cryo Refrigerator of regenerator, it is characterised in that institute
Cryogenic refrigeration module is stated for universe low-temp radiating device.
4. as claimed in claim 1 by transfer tube connection compressor and the Cryo Refrigerator of regenerator, it is characterised in that institute
The precooling temperature for stating cryogenic refrigeration module is liquid nitrogen temperature.
5. as claimed in claim 1 by transfer tube connection compressor and the Cryo Refrigerator of regenerator, it is characterised in that institute
State the hot junction of vascular, the phase modulating mechanism to be connected with the precool heat exchanger device.
6. as claimed in claim 1 by transfer tube connection compressor and the Cryo Refrigerator of regenerator, it is characterised in that institute
Back-heating type compressor is stated for G-M types compressor or stirling-type compressor.
7. as claimed in claim 1 by transfer tube connection compressor and the Cryo Refrigerator of regenerator, it is characterised in that institute
It is multi-stage pulse tube refrigeration machine to state Cryo Refrigerator, and multilevel hierarchy is thermal coupling structure or gas coupled structure.
8. as claimed in claim 1 by transfer tube connection compressor and the Cryo Refrigerator of regenerator, it is characterised in that institute
Adiabatic zone is stated using vacuum insulation system, the transfer tube connection precool heat exchanger device part, precool heat exchanger device, low-temperature zone is covered
Regenerator, regenerator cool end heat exchanger, connecting tube, vascular cold end heat exchanger, vascular and phase modulating mechanism.
9. as claimed in claim 1 by transfer tube connection compressor and the Cryo Refrigerator of regenerator, it is characterised in that institute
Connecting tube is stated for U-tube.
10. as claimed in claim 1 by transfer tube connection compressor and the Cryo Refrigerator of regenerator, it is characterised in that
The sectional area of the transfer tube is 2 ρ c | U1 |/| p1 |, wherein, ρ is gas density in pipe, and c is the sound wave velocity of sound, and U1 is volume flow
Amount, p1 is overpressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621071855.4U CN206094628U (en) | 2016-09-22 | 2016-09-22 | By cryocooler of transmission union coupling compressor arrangement with regenerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621071855.4U CN206094628U (en) | 2016-09-22 | 2016-09-22 | By cryocooler of transmission union coupling compressor arrangement with regenerator |
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| Publication Number | Publication Date |
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| CN206094628U true CN206094628U (en) | 2017-04-12 |
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| CN201621071855.4U Expired - Fee Related CN206094628U (en) | 2016-09-22 | 2016-09-22 | By cryocooler of transmission union coupling compressor arrangement with regenerator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288481A (en) * | 2016-09-22 | 2017-01-04 | 浙江大学 | A kind of Cryo Refrigerator being connected compressor and regenerator by transfer tube |
| CN113217484A (en) * | 2021-05-21 | 2021-08-06 | 福州大学 | Hydraulic soft switching transformer for realizing pressure lifting and working method thereof |
-
2016
- 2016-09-22 CN CN201621071855.4U patent/CN206094628U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288481A (en) * | 2016-09-22 | 2017-01-04 | 浙江大学 | A kind of Cryo Refrigerator being connected compressor and regenerator by transfer tube |
| CN113217484A (en) * | 2021-05-21 | 2021-08-06 | 福州大学 | Hydraulic soft switching transformer for realizing pressure lifting and working method thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| 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: 20170412 Termination date: 20190922 |