CN1158501C - Pulse tube refrigerator with new-type double-valve bidirectional air intake structure - Google Patents
Pulse tube refrigerator with new-type double-valve bidirectional air intake structure Download PDFInfo
- Publication number
- CN1158501C CN1158501C CNB021122482A CN02112248A CN1158501C CN 1158501 C CN1158501 C CN 1158501C CN B021122482 A CNB021122482 A CN B021122482A CN 02112248 A CN02112248 A CN 02112248A CN 1158501 C CN1158501 C CN 1158501C
- Authority
- CN
- China
- Prior art keywords
- valve
- heat exchanger
- pulse tube
- air intake
- direct current
- 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.)
- Expired - Fee Related
Links
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 19
- 230000002792 vascular Effects 0.000 claims description 28
- 238000000034 method Methods 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 2
- 239000008384 inner phase Substances 0.000 abstract 1
- 239000012071 phase Substances 0.000 abstract 1
- 101100171060 Caenorhabditis elegans div-1 gene Proteins 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
Images
Classifications
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- 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
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- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1408—Pulse-tube cycles with pulse tube having U-turn or L-turn type geometrical arrangements
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- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1424—Pulse tubes with basic schematic including an orifice and a reservoir
- F25B2309/14241—Pulse tubes with basic schematic including an orifice reservoir multiple inlet pulse tube
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The present invention discloses a pulse tube refrigerator with new-type double-valve bidirectional air intake structure. The present invention comprises an air holder, an eyelet valve, a heat exchanger for the hot end of a pulse tube, a pulse tube, a heat exchanger for the cold end of the pulse tube, a cold junction, a heat exchanger for the cold end of a heat regenerator, a heat regenerator and a heat exchanger for the hot end of the heat regenerator, wherein a double-valve bidirectional air intake valve is arranged between the heat exchanger for the hot end of the pulse tube and the heat exchanger for the hot end of the heat regenerator. The present invention can effectively control and adjust the flow of direct current which flows in the heat regenerator and a closed loop of the pulse tube to improve the performance of the refrigerator. A plurality of kinds of methods are used for controlling and eliminating the direct current, for example, an inner phase modulation is adopted to avoid the generation of the direct current under the condition of high frequency, the phase modulation modes of four valves, an active air holder, etc. are adopted to avoid the generation of the direct current under the condition of low frequency, the common disadvantages of the methods are that structure is complicated, and the method is adverse to adjustment and can not exert the advantages of the bidirectional air intake which can improve the performance of the heat regenerator and improve the inner pressure ratio of the pulse tube.
Description
Technical field
The present invention relates to a kind of pulse tube refrigerator with new-type double-valve bidirectional air intake structure.
Background technology
In the vascular refrigerator by the driven compressor of simple harmonic motion, it is feature that working fluid flows with alternation.When vascular refrigerator is in bidirection air intake pattern when work, because the asymmetry of valve flow coefficient, flow in the breathing action and to flow out the tolerance of bidirection air intake valve incomplete same, in the closed-loop path of the vascular of flowing through, regenerator, can cause direct current.Studies show that, only account for the very small scale of alternating masses stream even direct current flows, its caused parasitic hot-fluid but is in the same order of magnitude with the theoretical refrigerating capacity of vascular refrigerator.These flow to cold junction from the hot junction additional hot-fluid has not only increased the load of cool end heat exchanger, has reduced the performance of vascular refrigerator, but also is to cause the unsettled major reason of vascular refrigerator cryogenic temperature.The method of elimination and control direct current has a variety of, and phase modulation in for example adopting under high frequency situations, low frequency adopt four valves, active air reservoir type phase modulation etc. down.The common drawback of these methods is complex structures, is unfavorable for regulating.
Summary of the invention
The purpose of this invention is to provide a kind of pulse tube refrigerator with new-type double-valve bidirectional air intake structure.
It comprises air reservoir, little ports valve, vascular hot-side heat exchanger, vascular, vascular cold end heat exchanger, cold head, regenerator cool end heat exchanger, regenerator, regenerator hot end heat exchanger; Be provided with the double-valve bidirectional air intake valve between said vascular hot-side heat exchanger and the regenerator hot end heat exchanger.
The present invention is arranged in parallel, flows to the single valve doors that opposite dual-valve structure replaces traditional bidirection air intake with two, have simple to operate, advantage such as effect is obvious.It has utilized the asymmetrical type of breathing action valve flow coefficient, realized effectively controlling to the direct current that is circulated in regenerator and vascular is mobile, overcome the mobile negative influence that brings of direct current that traditional bidirectional air intake structure brings out, thereby improved the dual-way air-intake vascular refrigeator performance, avoided problems such as the unusual distribution of vascular and regenerator temperature, refrigeration machine long-life running temperature shakiness.
Description of drawings
Fig. 1 is the pulse tube refrigerator with new-type double-valve bidirectional air intake structure schematic diagram;
Fig. 2 is the double-valve bidirectional air intake structure layout drawing.
The specific embodiment
Pulse tube refrigerator with new-type double-valve bidirectional air intake structure comprises air reservoir 3, aperture valve 4, vascular hot-side heat exchanger 5, vascular 6, vascular cold end heat exchanger 7, cold head 8, regenerator cool end heat exchanger 9, regenerator 10, regenerator, hot end heat exchanger 11; Be provided with double-valve bidirectional air intake valve 1,2 between said vascular hot-side heat exchanger 5 and the regenerator hot end heat exchanger 11.
The double-valve bidirectional air intake valve is to flow to opposite double-valve structure in parallel.
Because the asymmetry of valve flow coefficient, when pressing various flows when arranging, the direct current direction of its generation is also with difference.For this reason, we have proposed the double-valve structure that is arranged in parallel by drag flow valve and adverse current valve as shown in Figure 2, and arrow is represented the main flow direction of valve among the figure, and manufacturer can mark with arrow on valve usually.Because the flow direction difference of two valves, this moment, their each free alternating flows caused that the direct current direction is just in time opposite, therefore can realize control and adjusting to direct current by the reasonable disposition to two valve openings.Need to prove, for common employing single valve bidirectional air intake structure, owing to direct current is not controlled, when the bidirection air intake valve has just obtained optimum aperture when aperture is very little, this is because temperature distribution caused by direct current is unreasonable makes valve opening further increase the pressure ratio of bringing to increase caused favourable influence and offset by the negative influence of the additional hot-fluid that direct current brought.And when adopting double-valve structure that direct current is controlled and regulated, the bidirection air intake valve opening can increase, and is beneficial to improve the vascular inner pressure ratio, reduces the regenerator flow resistance loss, has further improved the vascular refrigerator performance.Mandatory declaration, because the pressure reduction of regenerator and vascular is very little, even the bidirection air intake valve opening is very big, the flow that passes through also is limited, can not worsen the backheat performance.This structure is clear to the control principle of direct current, and is easy and simple to handle, can very realize control and adjusting to straight flow of two-way air inlet pulsing pipe refrigerator effectively, greatly improves the performance of refrigeration machine.
For vascular refrigerator, do not having under the DC case, the temperature of vascular and each point for measuring temperature of regenerator should be linear distribution substantially.The existence of direct current will influence the Temperature Distribution of regenerator and each point for measuring temperature of vascular greatly.Therefore, can be by the investigation of regenerator and temperature of vessels distribution being judged intuitively the direction and the size of direct current.It is to be noted, except influence of direct current, also relevant for its performance of two-way air inlet pulsing pipe refrigerator, promptly relevant with the tolerance proportioning of flow through regenerator and bidirection air intake valve with the bidirection air intake valve opening, therefore in adjustment process, should take into full account two links of valve opening and DC control.In initial adjustment, open one of them two-way valve earlier and be made as D1 to DIV1 aperture, this moment, refrigeration machine will have the direct current that is circulated in certain orientation, established its direction for to flow to cold junction from the vascular hot junction, and its amplitude will increase with the increase of valve D1 aperture.Open another valve D2 then, because the valve flow coefficient has directionality, the direct current that this moment, D2 caused will be opposite with the direct current direction that valve D1 causes, thereby can realize control, establish the direct current that can be during for DIV2 causes during for DIV1 when valve D2 aperture and eliminate valve D1 aperture to direct current.Then further open big valve D1 to DIV1 ' again, the same with above-mentioned regulative mode, the direct current that causes in the time of valve D1 aperture can being DIV1 ' when valve D2 aperture increases to DIV2 ' is eliminated, and the like till performance the best.Can realize control very easily by means of test macro temperature displayed distribution map to direct current.
Claims (2)
1, a kind of pulse tube refrigerator with new-type double-valve bidirectional air intake structure, it comprises air reservoir [3], little ports valve [4], vascular hot-side heat exchanger [5], vascular [6], vascular cold end heat exchanger [7], cold head [8], regenerator cool end heat exchanger [9], regenerator [10], the regenerator hot end heat exchanger [11] that connects successively; It is characterized in that between said vascular hot-side heat exchanger [5] and regenerator hot end heat exchanger [11], being provided with double-valve bidirectional air intake valve [1], [2].
2, a kind of pulse tube refrigerator with new-type double-valve bidirectional air intake structure according to claim 1 is characterized in that said double-valve bidirectional air intake valve is to flow to opposite double-valve structure in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021122482A CN1158501C (en) | 2002-06-25 | 2002-06-25 | Pulse tube refrigerator with new-type double-valve bidirectional air intake structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021122482A CN1158501C (en) | 2002-06-25 | 2002-06-25 | Pulse tube refrigerator with new-type double-valve bidirectional air intake structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1389694A CN1389694A (en) | 2003-01-08 |
| CN1158501C true CN1158501C (en) | 2004-07-21 |
Family
ID=4741958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021122482A Expired - Fee Related CN1158501C (en) | 2002-06-25 | 2002-06-25 | Pulse tube refrigerator with new-type double-valve bidirectional air intake structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1158501C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153756B (en) * | 2006-09-29 | 2012-05-30 | 住友重机械工业株式会社 | Refrigerator of pulse tube |
| CN101551181B (en) * | 2009-05-18 | 2011-01-05 | 浙江大学 | Variable cross-section heat regenerator used in low-temperature refrigerator |
| JP5931787B2 (en) * | 2013-03-26 | 2016-06-08 | 住友重機械工業株式会社 | U-shaped pulse tube refrigerator |
| CN107036320B (en) * | 2016-02-04 | 2020-07-28 | 同济大学 | Cold compression type pulse tube refrigerator and precooling type refrigerator system |
| JP6901964B2 (en) * | 2017-12-26 | 2021-07-14 | 住友重機械工業株式会社 | Manufacturing method of pulse tube refrigerator and pulse tube refrigerator |
-
2002
- 2002-06-25 CN CNB021122482A patent/CN1158501C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1389694A (en) | 2003-01-08 |
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