CN207299597U - Coaxial type level-one Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger - Google Patents
Coaxial type level-one Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger Download PDFInfo
- Publication number
- CN207299597U CN207299597U CN201720863524.2U CN201720863524U CN207299597U CN 207299597 U CN207299597 U CN 207299597U CN 201720863524 U CN201720863524 U CN 201720863524U CN 207299597 U CN207299597 U CN 207299597U
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- China
- Prior art keywords
- heat exchanger
- level
- vascular
- slit
- stirling
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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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1406—Pulse-tube cycles with pulse tube in co-axial or concentric geometrical arrangements
-
- 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
- F25B2309/1412—Pulse-tube cycles characterised by heat exchanger details
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- Devices That Are Associated With Refrigeration Equipment (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
This patent discloses a kind of coaxial type level-one Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger.Its main structure body is made of a kind of slit heat exchanger and related flow-guiding structure, and heat exchanger is the nearly column structure of hollow high thermal conductivity material processing, and centre is slit finned heat exchanger, and exchanger base radial direction has a through hole to be used to install inertia tube.The heat exchange area in inlet and outlet velocity uniformity and limited bulk that this patent realizes nonaxisymmetric structure between the non-equal diameter of non-axis symmetry by way of increasing diversion trench and uniformly processing slit maximizes, and the length and depth design of diversion trench meet the requirement of level-one Stirling expansion chamber void volume and secondary inlet velocity uniformity at the same time.The patent can effectively lift coaxial type two-stage Stirling vascular hybrid refrigeration machine overall performance.
Description
Technical field
This patent is related to a kind of heat exchanger, and in particular in a kind of coaxial type level-one Stirling two level vascular hybrid refrigeration machine
Between heat exchanger.
Background technology
The vascular refrigerator of 20-50K warm areas generally uses two-layer configuration, and level-one Stirling two level vascular hybrid refrigeration machine is made
For a kind of novel two stage refrigeration machine, it is by level-one Stirling cold finger and two level vascular regenerator hot junction by Intermediate Heat Exchanger by gas
Unicom is flowed, by same driven compressor, the cold working medium of level-one cold finger enters two level cold finger by Intermediate Heat Exchanger, while also may be used
Cold is externally provided, two level cold finger working gas finally enters two level vascular cold finger refrigeration into low-temperature zone regenerator backheat.
Intermediate Heat Exchanger is component extremely crucial in level-one Stirling two level vascular hybrid refrigeration machine.In ideal situation
Under, it will realize following several respects major function：
1) realize that working medium is transmitted between level-one cold finger and two level cold finger.Working medium, which has to pass through level-one cold finger, could enter two level
Cold finger, this just needs Intermediate Heat Exchanger to reduce flow resistance to the greatest extent while transmission working medium requirement is reached.
2) high efficient heat exchanging.Intermediate Heat Exchanger not only wants external cooling, and two level cold finger regenerator, vascular also need to level-one cold finger
Cold carry out precooling, and particularly heat exchange in co-axial pulse tube refrigerator to gas in regenerator is realized to two again
The precooling of level vascular, this just needs to realize larger heat exchange area under limited bulk.
3) rectification is carried out to the working medium for entering two level regenerator.For coaxial type level-one Stirling two level vascular hybrid refrigeration
Machine, its inertia tube are that non-centrosymmetric structure is presented from the extraction of the side of Intermediate Heat Exchanger, whole Intermediate Heat Exchanger, this makes to bring about the desired sensation
Stream becomes particularly significant by entering the airflow homogeneity problem of two level regenerator after Intermediate Heat Exchanger.By by heat exchanger fin
It is divided into two sections, gap is left in the fin of heat exchanger lower semisection, it is possible to achieve the working medium rectification to entering two level regenerator
Function.
The content of the invention
The purpose of this patent is, in one intermediate heat transfer of level two design of level-one Stirling two level vascular hybrid refrigeration machine
Device, solves the high efficiency of transmission of air-flow and cold between level-one cold finger and two level cold finger, and the flowing of two level cold finger regenerator entrance is uniform
The problem of property.
In order to achieve the above object, the level-one Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger invented, intermediate heat transfer
Device uses the nearly column structure of high thermal conductivity material processing, is the slit heat exchange fin 1 of circumference on the inside of heat exchanger, fin
Lower semisection has diversion trench 2, and exchanger base radial direction has a through hole 3.
Heat exchanger top is connected with low-temperature zone regenerator 8, and outside diameter is equal to the outside diameter of low-temperature zone regenerator 8, under heat exchanger
Portion is connected with high temperature section regenerator 12；Heat exchanger lower semisection outside diameter is equal to the outside diameter of high temperature section regenerator 12.Slit heat exchange wing
Piece 1 is the trapezoidal fin structure of uniform circular arrangement, and slit body epimere diameter of bore is equal to outside diameter, the hypomere slit arteries and veins of vascular 11
There are diversion trench between pipe outside diameter.
Intermediate Heat Exchanger design method is as follows：
First, slit cutting width W is determined according to processing technology；
Secondly, slit bar number n (rounding even number) is determined：
Wherein：D1For vascular outside diameter；
Finally, slit height H is calculated：
Wherein：Q is heat exchanger heat exchange amount, D2It is the temperature that working gas flows through heat exchanger for high temperature section regenerator internal diameter, Δ T
Difference, h are working gas and surface film thermal conductance of the heat exchanger solid material in temperature T.The advantages of this patent, is as follows：
1) it is Stirling cold finger cold finger cold end and vascular cold finger hot junction is direct-connected by Intermediate Heat Exchanger, realize the straight of cold working medium
Connect transmission；
2) mode for being in close contact in vascular hot junction and inertia tube inlet with Intermediate Heat Exchanger, is realized to vascular and inertia tube
Precooling, the compact-sized temperature difference is small；
4) slit lower semisection is more smaller than upper semisection to inertia tube junction slit height, formed diversion trench, slit outside diameter with
Low-temperature zone regenerator internal diameter is identical, homogenizes the air-flow into low-temperature zone regenerator；
5) footpath is identical with vascular outside diameter in tapered slot body, slit body is formed good thermally contact with vascular and reaches to vascular
The purpose of precooling, can effectively improve pulse tube refrigeration coefficient.
Above-mentioned advantage will greatly promote the raising of coaxial type two-stage Stirling vascular hybrid refrigeration machine Intermediate Heat Exchanger performance,
Lifting for refrigeration machine overall performance has very important significance.
Brief description of the drawings
Fig. 1 is the coaxial type two-stage Stirling vascular hybrid refrigeration machine Intermediate Heat Exchanger sectional view invented；
Fig. 2 is view under the coaxial type two-stage Stirling vascular hybrid refrigeration machine Intermediate Heat Exchanger invented；
Fig. 3 is the two level cold finger partial cutaway for the coaxial type two-stage Stirling vascular hybrid refrigeration machine Intermediate Heat Exchanger invented
View；Wherein：1 is slit heat exchange fin；2 be diversion trench；3 be inertia tube mounting hole；4 be vascular water conservancy diversion silk screen；5 low-temperature zones
Regenerator outer wall；6 be Intermediate Heat Exchanger；7 be high temperature section Stirling outer wall；8 be low-temperature zone regenerator matrix；9 be the first welding
Point；10 be the second pad；11 be vascular；12 be high temperature section regenerator.
Embodiment
Specific implementation of the patent mode is done with reference to the accompanying drawings and embodiments and is further described in detail.In this patent
Description in, it is necessary to explanation, the term " finger such as " center ", " radial direction ", " on ", " under ", " interior ", " outer ", " vertical ", " level "
Show that orientation or position relationship are based on position relationship shown in attached drawing, be for only for ease of description this patent and simplify description, without
It is instruction or implies particular orientation that signified device or element must have, with specific azimuth configuration and operation, therefore not
It is understood that as the limitation to this patent.In addition term " first ", " second " are only used for description purpose, and it is not intended that instruction or
Imply relative importance.In addition, in the description of this patent unless otherwise indicated, " multiple " be meant that two or two with
On.
As shown in figure 3, the thermal coupling coaxial type two-stage vascular refrigerator two level Intermediate Heat Exchanger invented, use are highly thermally conductive
The material manufacture of rate, Intermediate Heat Exchanger heat exchange amount are 10W, operating temperature 80K, 8 outside diameter 10.2mm of vascular, high temperature section regenerator
Internal diameter is 30mm, and low-speed WEDM technology cuts the wide 0.2mm of slit, and working gas flows through the temperature difference control of heat exchanger in order to control
Within 1.5K, the surface film thermal conductance of helium and heat exchanger solid material is 1115W/ (m under the 80K looked into2K), then calculate
The height of heat exchanger slit is 9mm, and the inside of Intermediate Heat Exchanger as shown in Figure 3 uses low-speed WEDM mode along the cone
The center line of shape slit body upper and lower end face uniformly processes trapezoidal fin structure and forms slit body, the upper surface of tapered slot body with
The lower face of low-temperature zone regenerator matrix flushes, and heat exchanger lower semisection forms the diversion trench of 2mm wide.
So as to form the Intermediate Heat Exchanger for coaxial type two-stage Stirling vascular hybrid refrigeration machine.
Claims (1)
- A kind of 1. coaxial type level-one Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger, it is characterised in that：The Intermediate Heat Exchanger is the nearly column structure of high thermal conductivity material processing, is the slit of circumference on the inside of heat exchanger Formula heat exchange fin (1), fin lower semisection have diversion trench (2), and exchanger base radial direction has inertia tube mounting hole (3)；Heat exchanger top is connected with low-temperature zone regenerator (8), and outside diameter is equal to low-temperature zone regenerator (8) outside diameter, heat exchanger lower part It is connected with high temperature section regenerator (12)；Heat exchanger lower semisection outside diameter is equal to high temperature section regenerator (12) outside diameter；Slit heat exchange wing Piece (1) is the trapezoidal fin structure of uniform circular arrangement, and slit body epimere diameter of bore is equal to vascular (11) outside diameter, hypomere slit There are diversion trench between vascular outside diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720863524.2U CN207299597U (en) | 2017-07-17 | 2017-07-17 | Coaxial type level-one Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720863524.2U CN207299597U (en) | 2017-07-17 | 2017-07-17 | Coaxial type level-one Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207299597U true CN207299597U (en) | 2018-05-01 |
Family
ID=62451185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720863524.2U Withdrawn - After Issue CN207299597U (en) | 2017-07-17 | 2017-07-17 | Coaxial type level-one Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207299597U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356008A (en) * | 2017-07-17 | 2017-11-17 | 中国科学院上海技术物理研究所 | A kind of coaxial type one-level Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger |
| CN112867898A (en) * | 2018-09-20 | 2021-05-28 | 住友重机械工业株式会社 | Pulse tube refrigerator and method for manufacturing pulse tube refrigerator |
-
2017
- 2017-07-17 CN CN201720863524.2U patent/CN207299597U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356008A (en) * | 2017-07-17 | 2017-11-17 | 中国科学院上海技术物理研究所 | A kind of coaxial type one-level Stirling two level vascular hybrid refrigeration machine Intermediate Heat Exchanger |
| CN107356008B (en) * | 2017-07-17 | 2022-11-11 | 中国科学院上海技术物理研究所 | Intermediate heat exchanger of coaxial type primary Stirling secondary pulse tube mixed refrigerator |
| CN112867898A (en) * | 2018-09-20 | 2021-05-28 | 住友重机械工业株式会社 | Pulse tube refrigerator and method for manufacturing pulse tube refrigerator |
| CN112867898B (en) * | 2018-09-20 | 2023-01-13 | 住友重机械工业株式会社 | Pulse tube refrigerator and method for manufacturing pulse tube refrigerator |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180501 Effective date of abandoning: 20221111 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180501 Effective date of abandoning: 20221111 |