CN108662803A - A kind of vascular refrigerator using microchannel phase modulation apparatus - Google Patents
A kind of vascular refrigerator using microchannel phase modulation apparatus Download PDFInfo
- Publication number
- CN108662803A CN108662803A CN201810359839.2A CN201810359839A CN108662803A CN 108662803 A CN108662803 A CN 108662803A CN 201810359839 A CN201810359839 A CN 201810359839A CN 108662803 A CN108662803 A CN 108662803A
- Authority
- CN
- China
- Prior art keywords
- phase modulation
- microchannel
- vascular
- modulation apparatus
- 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
- 230000002792 vascular Effects 0.000 title claims abstract description 43
- 210000005239 tubule Anatomy 0.000 claims abstract description 14
- 238000005057 refrigeration Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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
- F25B9/145—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle pulse-tube cycle
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
The invention discloses a kind of vascular refrigerators using microchannel phase modulation apparatus, including compressor, grade aftercooler, regenerator, cool end heat exchanger, vascular, microchannel phase modulation apparatus and the air reservoir being sequentially communicated, microchannel phase modulation apparatus includes the pipe joint at both ends and more intermediate Thermal Performance of Micro Channels tubules.By using microchannel phase modulating mechanism so that refrigeration machine phase modulation ability enhances.The pipe range of microchannel phase modulation apparatus with identical phase modulation ability substantially shortens than inertia tube pipe range, and the inertia tube increase that phase modulation Amplitude Ratio is traditional, for vascular refrigerator, the phase between pressure wave and quality stream can be made closer to ideal phase modulation range using microchannel phase modulation apparatus, and it can substitute hot end heat exchanger, make simple in structure, can more effectively improve the efficiency of vascular refrigerator.
Description
Technical field
The present invention relates to low temperature pulse tubes refrigeration machine field more particularly to a kind of pulse tube refrigerations using microchannel phase modulation apparatus
Machine.
Background technology
Since military, medical treatment and the development of space technology, requirement of the various high-grade, precision and advanced instruments to sub-cooled equipment are got over
Come it is more harsh, vascular refrigerator due under its low temperature movement-less part, mechanical oscillation it is small, simple in structure, to being closed extensively
Note.But since its cold end quality stream and pressure wave phase matching are not ideal enough, and it is less efficient, it needs to add effective phase modifier
Structure could promote its efficiency.
The currently used phase modulation apparatus for improving performance is mainly the following：Hole and air reservoir phase modulation apparatus, by
Mikulin is invented, and is improved by Radebaugh, is one small ports valve of placement after hot end heat exchanger, is connected air reservoir later,
It can consider quality stream and pressure wave same-phase at small ports valve, to realize phase modulation, because its phase modulation ability is limited, not at present
It is common；Bidirection air intake phase modulation apparatus, is proposed by Zhu Shaowei, and a side is connected between compressor outlet and hot end heat exchanger outlet
Port valve so that compressor come out gas some be directly entered vascular hot junction so that this part pass through vascular
Quality stream be pre-chilled without regenerator, can inhibit the phenomenon that the advanced pressure wave of vascular hot junction quality stream phase, in low-temperature space
Greatly improve the performance of refrigeration machine；Inertia tube air reservoir phase modulating mechanism, is proposed by Kanao, by Hole and air reservoir phase modulation apparatus
Small ports valve is substituted for an elongated pipe, by the capacitive reactance of the induction reactance of pipe and air reservoir in conjunction with come to quality stream and pressure wave into
Row is adjusted, and because its is simple in structure, and is widely used, but because it belongs to the passive phase modulation that cannot actively adjust, phase modulation energy
The problem of power meeting Shortcomings；In addition there are other various forms of phase modifiers such as dual-active plunger type, four valve-type and active air reservoir type
Structure, although phase modulation ability has some improvement, because structure too complex is not suitable for failing extensive use due to popularization.
The shortcomings that because of above-mentioned various different phase modulating mechanisms or there are phase modulation ability relative deficiencies, or increase movement portion
Therefore part or volume is excessively huge or structure is excessively complicated preferably to improve the performance of vascular refrigerator, needs one
The significantly more efficient and simple in structure phase modulating mechanism of kind.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of pulse tube refrigerations using microchannel phase modulation apparatus
Machine using microchannel phase modulation apparatus, the enhancing of phase modulation ability, and since it is with good heat dissipation performance, can cancel refrigeration machine
In hot end heat exchanger.
A kind of vascular refrigerator using microchannel phase modulation apparatus, including be sequentially communicated compressor, grade aftercooler, return
Hot device, vascular cold end heat exchanger, vascular, microchannel phase modulation apparatus and air reservoir, the microchannel phase modulation apparatus are micro- logical by several
Road tubule is constituted.
In the above technical solution, phase modulation, the enhancing of phase modulation ability are carried out by microchannel phase modulating mechanism.With identical phase modulation
The microchannel of ability is substantially shortened relative to traditional inertia tube pipe range, and the inertia tube increase that phase modulation Amplitude Ratio is traditional.Meanwhile
Since microchannel phase modulation apparatus has good heat dissipation performance, the hot end heat exchanger in refrigeration machine can be also served as, is eliminated
Hot end heat exchanger, keep the structure of entire vascular refrigerator compacter with it is simple.
Preferably, the inner tube diameter of the microchannel tubule is less than 1mm.
For the tubule of microchannel, because its caliber is very small, within 1mm, boundary layer is almost full with entire pipe,
It takes the small argument of column Bessel function approximate under the conditions of this, obtains：
Wherein,For the damped coefficient of capillary,For effective density, wherein paFor pressure, x is cross
Coordinate position, η are the coefficient of viscosity, and K is empirical coefficient, and a is caliber,For speed mean value, ρ0For averag density.
The sound wave propagated in microchannel, because its caliber is very small, internal gas may be considered constant temperature process, rather than
Adiabatic process, therefore, the velocity of sound of sound wave is isothermal sound speed, then ACOUSTIC WAVE EQUATION is represented by as follows：
Wherein, ρ0For averag density, c0For acoustic speed, γ is adiabatic exponent,For average speed, x is abscissa position
It sets, t is the time, and R is damped coefficient.
Because caliber is very thin, it may be considered thatMore much smaller than R, then the equation can be reduced to：
Can in the hope of in capillary absorption coefficient and the velocity of sound be respectively：
And for tubule, impedance is respectively：
Wherein, ω is angular speed, and α is absorption coefficient, and c is local velocity of sound, RaFor acoustic resistance, l is tube length, and a is caliber,
MaFor acoustic reactance.
For the phase modulating mechanism of microchannel, because its caliber is sufficiently fine, therefore acoustic absorptivity is very high, and sound wave is decayed quickly,
Energy is very easy to dissipate, so as to cancel hot end heat exchanger.Acoustic resistance and acoustic reactance are very big simultaneously so that it is with good
Good phase modulation ability.
Preferably, the material of the microchannel tubule is copper, stainless steel or the good metal of other heat conduction, increase micro-
The heat dissipation performance of channel tubule.
Several microchannels tubule both ends are respectively welded pipe joint.Pass through setting and vascular, air reservoir connector
Matched pipe joint so that microchannel phase modulating mechanism is more convenient to be connect with vascular with air reservoir.
Can also retain vascular hot-side heat exchanger between the vascular and microchannel phase modulation apparatus, microchannel phase modulation apparatus with
Vascular hot-side heat exchanger can provide heat dissipation simultaneously, further increase heat dissipation performance.
The vascular refrigerator can be sterlin refrigerator.The vascular refrigerator can be that single-stage pulse tube freezes
Machine or multi-stage pulse tube refrigeration machine.
Compared with prior art, beneficial effects of the present invention are：It is simple in structure, be easy to implement, to vascular refrigerator other
Component does not have particular/special requirement.Using microchannel phase modulation apparatus, the enhancing of phase modulation ability.Microchannel phase modulation with identical phase modulation ability
Device will compare traditional inertia tube and increase, while can reduce hot end heat exchanger component, can improve vascular refrigerator performance.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of vascular refrigerator using microchannel phase modulation apparatus of the invention；
Fig. 2 is the schematic diagram of microchannel phase modulation apparatus of the present invention.
Wherein：1 is compressor；2 be grade aftercooler；3 be regenerator；4 be cool end heat exchanger；5 be vascular；6 be hot junction
Heat exchanger；7 be microchannel phase modulation apparatus；8 be air reservoir；9 be microchannel tubule；10 be pipe joint.
Specific implementation mode
The present invention is further elaborated with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of vascular refrigerator using microchannel phase modulation apparatus, including compressor 1, grade aftercooler 2,
Regenerator 3, cool end heat exchanger 4, vascular 5, hot end heat exchanger 6, microchannel phase modulation apparatus 7 and air reservoir 8.
Wherein compressor 1 is opposed type Linearkompressor also known as pressure wave generator, and working medium used is helium, generates friendship
The pressure of variable oscillation.The outlet of compressor 1 is connected with grade aftercooler 2 by one section of void volume, and grade aftercooler 2 is shell-and-tube
Heat exchanger is water cooling type heat exchanger, and the high-temperature oscillation gas cooling that compressor comes out is got off by cooling water, while also may be used
The heat that face component regenerator 3 generates thereafter is taken away.3 inside of regenerator is porous media, as used not in the present embodiment
Rust steel wire and helium are adequately exchanged heat.In the preceding half period of refrigerating device inner alternation gas oscillation, gas is by heat
Stainless steel cloth in regenerator is passed to, in the second half of the cycle of alternation gas oscillation, gas absorbs heat out of regenerator silk screen
Amount, it is final so that axial temperature gradient occurs in regenerator, close to one section of temperature height of grade cooler 2, close to cold end regenerator 4
One section of temperature is low.Final cold is gone from the export of cool end heat exchanger 4, needs the equipment of low temperature environment to use for other.Cold end backheat
It is connected with vascular 5 after device 4, vascular 5 is one section of empty pipe, equally has prodigious axial-temperature gradient, the enthalpy of cold end is spread
It is delivered to hot end heat exchanger 6, the cooled water of heat is converted to and takes away.It is connected with microchannel phase modulation apparatus 7 after hot end heat exchanger 6.
As shown in Fig. 2, pipe joint 10 and intermediate more piece microchannel tubule 9 structures of the microchannel phase modulation apparatus 7 by both ends
At by being weldingly connected.It is connected with air reservoir 8 after microchannel phase modulating mechanism 7.Microchannel phase modulation apparatus 7 and air reservoir 8 are to allow
Vascular refrigerator obtains higher efficiency.
In another embodiment, hot end heat exchanger 6 can also remove, and heat exchange function can be filled completely by microchannel phase modulation
7 are set to be replaced.
The foregoing is merely the preferable implementation examples of the present invention, are not intended to restrict the invention, it is all in spirit of that invention and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of vascular refrigerator using microchannel phase modulation apparatus, which is characterized in that including be sequentially communicated compressor, after grade
Cooler, regenerator, vascular cold end heat exchanger, vascular, microchannel phase modulation apparatus and air reservoir, if the microchannel phase modulation apparatus by
Dry root microchannel tubule is constituted.
2. the vascular refrigerator according to claim 1 using microchannel phase modulation apparatus, which is characterized in that the microchannel
The inner tube diameter of tubule is less than 1mm.
3. the vascular refrigerator according to claim 1 using microchannel phase modulation apparatus, which is characterized in that the microchannel
The material of tubule is copper or stainless steel.
4. microchannel phase modulating mechanism according to claim 1, which is characterized in that several microchannels tubule both ends point
Pipe joint is not welded with it.
5. the vascular refrigerator according to claim 1 using microchannel phase modulation apparatus, which is characterized in that the vascular with
Vascular hot-side heat exchanger is equipped between the phase modulation apparatus of microchannel.
6. the vascular refrigerator according to claim 1 using microchannel phase modulation apparatus, which is characterized in that the vascular
Refrigeration machine is sterlin refrigerator.
7. the vascular refrigerator according to claim 1 using microchannel phase modulation apparatus, which is characterized in that the vascular
Refrigeration machine is single-stage pulse tube refrigerator or multi-stage pulse tube refrigeration machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810359839.2A CN108662803B (en) | 2018-04-20 | 2018-04-20 | Pulse tube refrigerator adopting microchannel phase modulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810359839.2A CN108662803B (en) | 2018-04-20 | 2018-04-20 | Pulse tube refrigerator adopting microchannel phase modulation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108662803A true CN108662803A (en) | 2018-10-16 |
| CN108662803B CN108662803B (en) | 2019-12-24 |
Family
ID=63780626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810359839.2A Expired - Fee Related CN108662803B (en) | 2018-04-20 | 2018-04-20 | Pulse tube refrigerator adopting microchannel phase modulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108662803B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486974A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Second level lamination with medial inlet interlock microchannel throttling heat exchange refrigerator |
| CN110486973A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Multi-stage precooling microchannel throttling heat exchange refrigerator with medial inlet |
| CN110486972A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Multistage two sides pre-cooling lamination interlocks microchannel throttling heat exchange refrigerator |
| CN110486980A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Microchannel throttling refrigerator |
| CN110486971A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Waveform lamination microchannel refrigerator |
| CN110486970A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | The lamination microchannel throttling heat exchange refrigerator of multistage unilateral pre-cooling |
| CN110645729A (en) * | 2019-09-30 | 2020-01-03 | 杭州电子科技大学 | Pulse tube refrigerator adopting multiple valves and metal round tubes as parallel inertia tubes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353967A (en) * | 2003-05-29 | 2004-12-16 | Matsushita Electric Ind Co Ltd | Pulse tube refrigerator |
| CN1731047A (en) * | 2005-08-25 | 2006-02-08 | 上海交通大学 | Minisize pulse tube refrigerator |
| CN1743761A (en) * | 2005-10-09 | 2006-03-08 | 浙江大学 | Dual-way air-intake vascular refrigeator with corrugated pipe direct-current blocking-up structure |
-
2018
- 2018-04-20 CN CN201810359839.2A patent/CN108662803B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353967A (en) * | 2003-05-29 | 2004-12-16 | Matsushita Electric Ind Co Ltd | Pulse tube refrigerator |
| CN1731047A (en) * | 2005-08-25 | 2006-02-08 | 上海交通大学 | Minisize pulse tube refrigerator |
| CN1743761A (en) * | 2005-10-09 | 2006-03-08 | 浙江大学 | Dual-way air-intake vascular refrigeator with corrugated pipe direct-current blocking-up structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486974A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Second level lamination with medial inlet interlock microchannel throttling heat exchange refrigerator |
| CN110486973A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Multi-stage precooling microchannel throttling heat exchange refrigerator with medial inlet |
| CN110486972A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Multistage two sides pre-cooling lamination interlocks microchannel throttling heat exchange refrigerator |
| CN110486980A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Microchannel throttling refrigerator |
| CN110486971A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | Waveform lamination microchannel refrigerator |
| CN110486970A (en) * | 2019-08-29 | 2019-11-22 | 上海理工大学 | The lamination microchannel throttling heat exchange refrigerator of multistage unilateral pre-cooling |
| CN110645729A (en) * | 2019-09-30 | 2020-01-03 | 杭州电子科技大学 | Pulse tube refrigerator adopting multiple valves and metal round tubes as parallel inertia tubes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108662803B (en) | 2019-12-24 |
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