CN108413639A - It is a kind of to inhibit structure by the fluctuation of the combined temp of low-temperature receiver of refrigeration machine - Google Patents
It is a kind of to inhibit structure by the fluctuation of the combined temp of low-temperature receiver of refrigeration machine Download PDFInfo
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- CN108413639A CN108413639A CN201810307044.7A CN201810307044A CN108413639A CN 108413639 A CN108413639 A CN 108413639A CN 201810307044 A CN201810307044 A CN 201810307044A CN 108413639 A CN108413639 A CN 108413639A
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- Prior art keywords
- fluctuation
- refrigeration machine
- combined temp
- thermal capacitance
- temperature
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/11—Reducing heat transfers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F2013/001—Particular heat conductive materials, e.g. superconductive elements
Abstract
Inhibiting structure by the fluctuation of the combined temp of low-temperature receiver of refrigeration machine the present invention relates to a kind of comprising：Refrigeration machine provides low-temperature receiver；Refrigeration machine cooled end flange is connected to the refrigeration machine；Sample flange, is attached with sample；It is provided with combined temp fluctuation between cold section of flange of the refrigeration machine and the sample flange and inhibits structure.Present invention incorporates the respective advantages of both Capacity method and heat resistance method, reduce temperature fluctuation using laminar thermal capacitance material and temperature is not caused to increase substantially, reduce temperature fluctuation using elongated and thermal resistance material with high heat conduction and do not cause temperature to increase substantially；The form that thermal capacitance material is all made of the low temperature glue of high thermal conductivity coefficient or directly welds is connected with other component, has prevented the uncontrollable disadvantage of thermal contact resistance caused by being threadedly coupled.
Description
Technical field
The present invention relates to a kind of temperature fluctuations to inhibit structure, more particularly to a kind of using refrigeration machine as the combined temp of low-temperature receiver
Fluctuation inhibits structure.
Background technology
GM refrigeration machines or the 4K warm area refrigeration machines that GM pulse tube refrigerating machines are currently the only commercialization, in low-temperature physics, doctor
The fields such as learning has an important application, especially using refrigeration machine as in the cryogenic system of low-temperature receiver, GM refrigeration machines or GM pulse control
Cold is more and more applied due to the advantages that being not necessarily to cryogenic liquid, simple operation, long operational time.
Since GM refrigeration machines or GM pulse tube refrigerating machines need periodic pressure wave driving that can just generate refrigeration effect,
Cyclic fluctuation is presented in the variation that the temperature of its internal working medium will be with pressure, and the specific heat capacity of the materials such as copper is very under low temperature in addition
It is small so that the temperature outside GM refrigeration machines or GM pulse tube refrigerating machine cool end heat exchangers has fluctuation by a relatively large margin (about
200mK-500mK), so cryogenic sample can not usually be directly installed on refrigeration machine cold end and be tested.To make refrigeration machine cold end
Temperature obtains effective attenuation, and common practice is divided into two kinds at present, and one is Capacity methods, i.e., between refrigeration machine cold end and sample
Increase the low temperature high specific heat materials such as liquid helium chamber, lead；Another way is heat resistance method, i.e., increases between refrigeration machine cold end and sample
Add low Heat Conduction Material.Wherein Capacity method will will increase heavy burden and the complexity of refrigeration machine cold end, and temperature fluctuation inhibition
It is limited；And heat resistance method will make sample that there are the larger temperature difference with refrigeration machine, and the minimum temperature of sample is made to increase.
The deficiency that suppressing method is fluctuated for current refrigeration machine cold junction temperature, need to propose a kind of simple effective method with
Realize the efficient inhibition of sample temperature fluctuation.
Invention content
Present invention aim to address tradition using refrigeration machine as in the sample structure of low-temperature receiver and its temperature fluctuation suppressing method
The problems such as existing volume is big, quality is heavy, complicated, entire thermal resistance is difficult to control and minimum temperature increases.
Inhibiting structure by the fluctuation of the combined temp of low-temperature receiver of refrigeration machine the present invention provides a kind of comprising：Refrigeration machine,
Low-temperature receiver is provided；Refrigeration machine cooled end flange is connected to the refrigeration machine；Sample flange, is attached with sample；In the system
It is provided with combined temp fluctuation between cold section of flange of cold and the sample flange and inhibits structure.
Wherein, it includes the first thermal capacitance material, thermal resistance material and the second thermal capacitance material that the combined temp fluctuation, which inhibits structure,.
Wherein, it is HoCu to state the first thermal capacitance material2、Er3Ni、Er0.5Pr0.5Or the magnetic materials such as ErNi.
Wherein, the first thermal capacitance material is the material having under other low temperature such as lead compared with high specific heat capacity.
Wherein, the second thermal capacitance material is HoCu2、Er3Ni、Er0.5Pr0.5Or the magnetic materials such as ErNi.
Wherein, the second thermal capacitance material is the material having under other low temperature such as lead compared with high specific heat capacity.
Wherein, the material identical of the first thermal capacitance material and the second thermal capacitance material.
Wherein, the material of the first thermal capacitance material and the second thermal capacitance material differs.
Wherein, the thermal resistance material is to have high heat conduction under the low temperature such as high-purity oxygen-free copper, rafifinal, sapphire or graphene
The material of coefficient.
Wherein, the refrigeration machine is the pulse tube refrigerating machine of low vibration, and the operating temperature of 2.2K-300K is provided for sample.
The present invention proposes a kind of combined temp fluctuation inhibition structure so that the small temperature difference can be realized using simple structure
Under temperature fluctuation efficiently inhibit.
Description of the drawings
Fig. 1 is that the combined temp fluctuation of the present invention inhibits structural schematic diagram.
Specific implementation mode
To facilitate the understanding of the present invention, the embodiment of the present invention is illustrated below in conjunction with the accompanying drawings, people in the art
Member should be appreciated that following explanations only to facilitate being explained to invention, and not as the specific restriction to its range.
It is fluctuated the present invention provides a kind of combined temp and inhibits structure, Fig. 1 is the inhibition structural schematic diagram of the present invention.Such as figure
Shown in 1, combined temp of the invention fluctuation inhibition structure includes：Refrigeration machine 1, refrigeration machine cooled end flange 2, the first thermal capacitance material 3-
1, thermal resistance material 3-2, the second thermal capacitance material 3-3, sample flange 4.Wherein refrigeration machine 1 is the low-temperature receiver needed for sample measures；3-1、
3-2 and 3-3 is formed inhibits temperature fluctuation to be transferred to sample flange 4 at composite construction；So that sample flange 4 carries for sample
For pulsation-free steady temperature.
In case study on implementation as shown in Figure 1, refrigeration machine 1 is the pulse tube refrigerating machine of low vibration, can be provided for sample
The operating temperature of 2.2K-300K, the at this time original fluctuation about 200mK-500mK of the temperature of refrigeration machine cooled end flange.It is preferred that the system
Cold 1 can be GM refrigeration machines or GM pulse tube refrigerating machines, VM refrigeration machines, VM pulse tube refrigerating machines, sterlin refrigerator, this
Special crop type pulse tube refrigerating machine etc. other use pressure wave driving refrigeration machine form.
First thermal capacitance material 3-1 is flake, and is pasted onto refrigeration machine cooled end flange 2 by the low temperature glue of high thermal conductivity coefficient
On.The low temperature glue that high thermal conductivity coefficient may be used in the first thermal capacitance material 3-1 and refrigeration machine cooled end flange 2 is bonded,
Other welding forms such as soldering, silver soldering can be used to be attached.
The shape of the first thermal capacitance material 3-1 can be round or other polygons, and thickness is preferably
0.01mm-10mm, equivalent diameter can be the arbitrary dimension less than refrigeration machine cooled end flange 2；The first thermal capacitance material is excellent
It is selected as HoCu2、Er3Ni、Er0.5Pr0.5Or the magnetic materials such as ErNi；May be to have compared with high specific heat capacity under other low temperature such as lead
Material.
The first thermal capacitance material 3-1 has higher specific heat at low temperature, and thermal diffusion coefficient is low, thus from its upper surface
Effective attenuation can be obtained by being transferred to the temperature fluctuation of lower surface, and temperature fluctuation can decay to 10mK or so, due to the first thermal capacitance
Material 3-1 thickness is thin, the basic indifference of mean temperature of top and bottom.
Thermal resistance material 3-2 is connected with the first thermal capacitance material 3-1, the thermal resistance material 3-2 and first thermal capacitance
It can be used between material 3-1 and be attached using other welding forms such as soldering, silver soldering, the low of high thermal conductivity coefficient can also be used
Warm glue is bonded.
Thermal resistance material 3-2 is soldered to together with thermal capacitance material 3-1, and thermal resistance material 3-2, which is selected, has high heat conduction system under low temperature
Several elongated strip materials, high thermal conductivity coefficient can guarantee mean temperature do not increase substantially, elongate, threadlike ensure its sectional area it is small and
Length is long so that and temperature fluctuation is inhibited, so when temperature fluctuation reaches lower end by the upper end of thermal resistance material 3-2, temperature
Fluctuation can further decay to 1mK or so.
Thermal resistance material 3-2 can be that filament shape, preferably a diameter of 0.1mm-5mm, or flake, thickness are
0.1mm-5mm, length can be 1mm-1m；It can make one when use, or the more or more pencil shapes twined
Formula, radical 1-10000 roots.Thermal resistance material 3-2 can be high-purity oxygen-free copper or rafifinal, sapphire, graphene etc.
Material with high thermal conductivity coefficient under low temperature；The shape of thermal resistance material 3-2 can be C-shaped, or linear type, S-shaped etc. its
Its shape, interface shape can be any suitable shapes such as semicircle or round or ellipse.
Second thermal capacitance material 3-3 can be selected from HoCu2、Er3Ni、Er0.5Pr0.5Or the magnetic materials such as ErNi, or lead
Deng the material having under other low temperature compared with high specific heat capacity；The shape of second thermal capacitance material 3-3 can be round or other
Polygon, thickness 0.1mm-10mm, equivalent diameter can be the arbitrary dimension less than sample flange 4.Second heat
Capacity materials 3-3 is flake, and the upper surface of the second thermal capacitance material 3-3 is connected with thermal resistance material 3-2, the thermal resistance material
It can be used between 3-2 and the second thermal capacitance material 3-3 and be attached using other welding forms such as soldering, silver soldering, it can also
It is bonded using the low temperature glue of high thermal conductivity coefficient；The lower surface of the second thermal capacitance material 3-3 passes through the low of high thermal conductivity coefficient
Warm glue is on sample flange 4.Do not limit to using the low of high thermal conductivity coefficient between second thermal capacitance material 3-3 and sample flange 2
Warm glue is bonded, and other welding forms such as soldering, silver soldering can also be used and be attached.With the principle of the first thermal capacitance material 3-1
Equally, temperature fluctuation further can decay to 0.1mK hereinafter, and whole mean temperature base after by thermal capacitance material 3-3
This is consistent with refrigeration machine cooled end flange 3-1.
The first thermal capacitance material 3-1 and the second thermal capacitance material 3-3 can be same material or different materials
Material；Composite construction is formed using the first thermal capacitance material 3-1, thermal resistance material 3-2 and the second thermal capacitance material 3-3 and connects refrigeration machine cold end
When flange 2 and sample flange 4, may be used 1 group, can also use it is multigroup, quantity can be 1-100 groups.
Present invention incorporates the respective advantages of both Capacity method and heat resistance method, and temperature is reduced using laminar thermal capacitance material
It fluctuates and temperature is not caused to increase substantially, temperature fluctuation is reduced using elongated and thermal resistance material with high heat conduction and do not draw substantially
Temperature is played to increase；The form that thermal capacitance material is all made of the low temperature glue of high thermal conductivity coefficient or directly welds is connected with other component,
The uncontrollable disadvantage of thermal contact resistance caused by being threadedly coupled is prevented.
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, every content without departing from technical solution of the present invention is right according to the technical essence of the invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (10)
1. a kind of inhibiting structure by the fluctuation of the combined temp of low-temperature receiver of refrigeration machine comprising：Refrigeration machine provides low-temperature receiver；Refrigeration
Machine cooled end flange is connected to the refrigeration machine；Sample flange, is attached with sample；It is characterized in that：In the refrigeration
It is provided with combined temp fluctuation between cold section of flange of machine and the sample flange and inhibits structure.
2. combined temp fluctuation as described in claim 1 inhibits structure, it is characterised in that：The combined temp fluctuation inhibits knot
Structure includes the first thermal capacitance material, thermal resistance material and the second thermal capacitance material.
3. combined temp fluctuation as described in claim 1 inhibits structure, it is characterised in that：The first thermal capacitance material is
HoCu2、Er3Ni、Er0.5Pr0.5Or the magnetic materials such as ErNi.
4. combined temp fluctuation as described in claim 1 inhibits structure, it is characterised in that：The first thermal capacitance material is lead
Deng the material having under other low temperature compared with high specific heat capacity.
5. combined temp fluctuation as described in claim 1 inhibits structure, it is characterised in that：The second thermal capacitance material is
HoCu2、Er3Ni、Er0.5Pr0.5Or the magnetic materials such as ErNi.
6. combined temp fluctuation as described in claim 1 inhibits structure, it is characterised in that：The second thermal capacitance material is lead
Deng the material having under other low temperature compared with high specific heat capacity.
7. combined temp fluctuation as described in claim 1 inhibits structure, it is characterised in that：The first thermal capacitance material and second
The material identical of thermal capacitance material.
8. combined temp fluctuation as described in claim 1 inhibits structure, it is characterised in that：The first thermal capacitance material and second
The material of thermal capacitance material differs.
9. combined temp fluctuation as described in claim 1 inhibits structure, it is characterised in that：The thermal resistance material is high-purity anaerobic
Material with high thermal conductivity coefficient under the low temperature such as copper, rafifinal, sapphire or graphene.
10. combined temp fluctuation as described in claim 1 inhibits structure, it is characterised in that：The refrigeration machine is low vibration
Pulse tube refrigerating machine provides the operating temperature of 2.2K-300K for sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810307044.7A CN108413639B (en) | 2018-04-08 | 2018-04-08 | Composite temperature fluctuation suppression structure with refrigerator as cold source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810307044.7A CN108413639B (en) | 2018-04-08 | 2018-04-08 | Composite temperature fluctuation suppression structure with refrigerator as cold source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108413639A true CN108413639A (en) | 2018-08-17 |
| CN108413639B CN108413639B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810307044.7A Active CN108413639B (en) | 2018-04-08 | 2018-04-08 | Composite temperature fluctuation suppression structure with refrigerator as cold source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178967A (en) * | 2020-09-16 | 2021-01-05 | 上海卫星装备研究所 | Multi-angle mounting structure suitable for cold screen |
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| JPH07260266A (en) * | 1994-03-24 | 1995-10-13 | Sumitomo Heavy Ind Ltd | Cryogenic refrigerator |
| JPH0882450A (en) * | 1994-09-12 | 1996-03-26 | Takakuni Hashimoto | Cold accumulator for cryogenic refrigerator |
| CN1472764A (en) * | 2002-07-11 | 2004-02-04 | 内桥艾斯泰克股份有限公司 | Alloy temperature fuse and wire material therefor |
| CN101577989A (en) * | 2008-05-08 | 2009-11-11 | 于�玲 | Self-control thermostatic electric heating insulated board |
-
2018
- 2018-04-08 CN CN201810307044.7A patent/CN108413639B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479367A (en) * | 1981-12-28 | 1984-10-30 | Santa Barbara Research Center | Thermal filter |
| JPH07260266A (en) * | 1994-03-24 | 1995-10-13 | Sumitomo Heavy Ind Ltd | Cryogenic refrigerator |
| JPH0882450A (en) * | 1994-09-12 | 1996-03-26 | Takakuni Hashimoto | Cold accumulator for cryogenic refrigerator |
| CN1472764A (en) * | 2002-07-11 | 2004-02-04 | 内桥艾斯泰克股份有限公司 | Alloy temperature fuse and wire material therefor |
| CN101577989A (en) * | 2008-05-08 | 2009-11-11 | 于�玲 | Self-control thermostatic electric heating insulated board |
Non-Patent Citations (1)
| Title |
|---|
| 代杰: "高精度低温温度测量与控制系统实验研究", 中国优秀硕士学位论文全文数据库工程科技Ⅱ辑, no. 12, pages 005 - 30 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178967A (en) * | 2020-09-16 | 2021-01-05 | 上海卫星装备研究所 | Multi-angle mounting structure suitable for cold screen |
| CN112178967B (en) * | 2020-09-16 | 2022-02-08 | 上海卫星装备研究所 | Multi-angle mounting structure suitable for cold screen |
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| Publication number | Publication date |
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| CN108413639B (en) | 2023-10-13 |
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