CN105042922B - Pulse tube refrigerator and flow guide structure thereof - Google Patents
Pulse tube refrigerator and flow guide structure thereof Download PDFInfo
- Publication number
- CN105042922B CN105042922B CN201510395116.4A CN201510395116A CN105042922B CN 105042922 B CN105042922 B CN 105042922B CN 201510395116 A CN201510395116 A CN 201510395116A CN 105042922 B CN105042922 B CN 105042922B
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- Prior art keywords
- guide layer
- catch
- guiding structure
- flow
- vascular
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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
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line 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
- F25B2309/1414—Pulse-tube cycles characterised by pulse tube details
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to a flow guide structure of a pulse tube refrigerator. The flow guide structure comprises a cold-end connecting tube, a pulse tube and an inertia tube, and further comprises a first flow guide layer and a second flow guide layer which are located in the pulse tube, a first transition cavity connecting the first flow guide layer with the cold-end connecting tube, a second transition cavity connecting the second flow guide layer with the inertia tube, a first retaining piece located in the first transition cavity and/or a second retaining piece located in the second transition cavity. By adopting the flow guide structure of the pulse tube refrigerator, in the flow guide process, the resistance loss is few, the flow guide effect is greatly improved, air flow in the pulse tube flows evenly, and therefore the refrigeration capacity of the refrigerator is significantly improved.
Description
Technical field
The present invention relates to refrigeration machine field, and in particular to a kind of vascular refrigerator and its flow-guiding structure.
Background technology
Vascular refrigerator does not have moving component in cold head, has the advantages that simple structure, stable, dependable performance, is
A kind of extremely potential Cryo Refrigerator.At present, stirling-type vascular refrigerator be successfully applied to Infrared Detectors,
The numerous areas such as super conductive filter, forceful electric power superconduction.Abrupt-change cross section, i.e. runner circulating face are usually there will be in existing vascular refrigerator
Long-pending suddenly change.In these abrupt-change cross section both sides, flowing in big runner whether influence uniformly to refrigeration machine performance very
Significantly, whether uniform flowing and in small flow channels is does not have influence on systematic function substantially.Reciprocating working fluid is by rill
Easily there is jet into during big runner in road, causes occur flowing non-uniform phenomenon in big runner, so that the performance of refrigeration machine
Drastically decline.
As shown in figure 1, the abrupt interface of existing vascular refrigerator often appears in junction, the cold end of inertia tube 9 and vascular 7
The junction of connecting tube 4 and vascular 7, in addition, between cold end connecting tube 4 and cold end heat exchanger tube 3, main water cooler porch there is also
Abrupt-change cross section, but both jet rear is slightly smaller to refrigeration machine performance impact.Flow non-uniform phenomenon caused by jet to eliminate,
Prior art often installs certain flow-guiding structure at abrupt-change cross section, as shown in figure 1, being installed at abrupt-change cross section certain thickness
Silk screen is used as guide layer 6.The kinetic energy that silk screen has certain resistance, Jetstream fluid can be dissipated gradually after silk screen is run into,
Then big runner is entered uniformly across water conservancy diversion silk screen again.Silk screen provides uniform resistance as guide layer in whole flow cross section
Power so that the power of the jet that dissipates, but silk screen during water conservancy diversion along with excessive drag losses, water conservancy diversion effect can be more next
It is poorer.In order to solve this problem, also it has been proposed that increasing screen thickness in the place just to jet, but when air-flow reverse flow
When dynamic, that is, air-flow is from big runner into being then unfavorable for the Uniform Flow of big runner interior air-flow during small flow channels, therefore also has no
To good result.Also attempt to set up certain space between tubule and guide layer, after making air-flow be flowed out from tubule
Rapidly and evenly it scatter and flows to guide layer, enters back into big runner.The effect of this design is also very faint, because jet
Angle of flare is 10 degree or so, it means that if to allow jet to scatter naturally, the space length between tubule and guide layer
Will be very long, this can not possibly be realized in actual applications.
In sum, existing vascular refrigerator flow-guiding structure during water conservancy diversion along with excessive drag losses, water conservancy diversion
Effect can be worse and worse.Although there are many people to propose idea, good effect is all unable to reach, so providing a kind of arteries and veins
Control cold flow-guiding structure solves the problems, such as that current water conservancy diversion effect on driving birds is not good is particularly significant.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of vascular refrigerator flow-guiding structure and solve current water conservancy diversion effect
Not good problem.
For this purpose, the present invention proposes a kind of vascular refrigerator flow-guiding structure, including：Cold end connecting tube, vascular, inertia
Pipe, also including the first guide layer and the second guide layer in the vascular, connects first guide layer and the cold end
The First Transition chamber of connecting tube, connect second guide layer and the second adapter cavity of the inertia tube, positioned at first mistake
The first catch crossed in chamber and/or the second catch in second adapter cavity.
Preferably, first catch is parallel with first guide layer, and just to the cold end connecting tube, described first
Diameter of the diameter of catch less than the cold end connecting tube；And/or,
Second catch is parallel with second guide layer, and just to the inertia tube, the diameter of second catch
Less than the diameter of the inertia tube.
Preferably, first guide layer and second guide layer are uniform porous material.
Preferably, first guide layer and second guide layer are web materials.
Preferably, the flow-guiding structure also includes：Positioned at the first guide layer at least support of side and positioned at described
The support of two guide layers at least side.
Preferably, the support is the net for playing a supportive role, and the bracket clamp is in the vascular.
Preferably, first guide layer and second guide layer are fibrous felt materials.
Preferably, first catch is close to first guide layer, and second catch is close to second guide layer.
Preferably, first catch and second catch are circle.
Preferably, the second guide layer thickness is bigger than the first guide layer thickness.
Preferably, the First Transition chamber and second adapter cavity are bell shape.
On the other hand, present invention also offers a kind of vascular refrigerator, including：Main radiator, regenerator, cool end heat exchanger
And air reservoir, also including the vascular refrigerator flow-guiding structure described in above-mentioned any one.
By using vascular refrigerator flow-guiding structure provided by the present invention, drag losses is small during water conservancy diversion, water conservancy diversion
Effect is greatly improved, and the air current flow in vascular is uniform, and the refrigerating capacity of refrigeration machine is substantially improved.
Brief description of the drawings
The features and advantages of the present invention can be more clearly understood from by reference to accompanying drawing, accompanying drawing is schematical without that should manage
Solution is to carry out any limitation to the present invention, in the accompanying drawings：
Fig. 1 shows the conventional flow-guiding structure schematic diagram of vascular refrigerator in the prior art；
Fig. 2 shows the vascular refrigerator flow-guiding structure schematic diagram of the embodiment of the present invention 1；
Fig. 3 shows the close-up schematic view of flow-guiding structure in the embodiment of the present invention 1；
Fig. 4 shows flow schematic diagram of the air-flow in structure shown in Fig. 3 in the embodiment of the present invention 1；
Fig. 5 shows the structural representation of the medium-height trestle of the embodiment of the present invention 1；
Fig. 6 shows the vascular refrigerator flow-guiding structure schematic diagram of the embodiment of the present invention 2；
Fig. 7 shows the close-up schematic view of flow-guiding structure in the embodiment of the present invention 2；
Fig. 8 shows that traditional flow-guiding structure flow-guiding structure new with the present invention compares signal to the performance impact of refrigeration machine
Figure.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
As shown in Fig. 2 vascular refrigerator flow-guiding structure of the present invention includes：Cold end connecting tube 4, vascular 6, inertia tube 7, also wrap
Include：The first guide layer 501 and the second guide layer 502 in the vascular 6, connect first guide layer 501 with it is described
The First Transition chamber 101 of cold end connecting tube 4, the second adapter cavity 102 for connecting second guide layer 502 and the inertia tube 7,
The first catch 111 in the First Transition chamber 101 and/or the second catch in second adapter cavity 102
112.The vascular refrigerator flow-guiding structure that the present invention is provided is launched to describe in detail with reference to specific embodiment.
Embodiment 1
As shown in Figure 2-5, vascular refrigerator flow-guiding structure of the present invention is removed includes existing cold end connecting tube 4, vascular 6, is used to
Outside property pipe 7, also including the first guide layer 501 and the second guide layer 502 in the vascular 6.Wherein more preferably, described
One guide layer 501 and second guide layer 502 are uniform porous material；First guide layer 501 and described second is led
Fluid layer 502 can be the web material of 40 mesh, and thickness can be 3mm or so, in order to play good refrigeration, described second
The thickness of guide layer 502 is general bigger than the thickness of the first guide layer 501.Because guide layer silk screen is softer than relatively thin, in order to anti-
Only silk screen deforms under airflow function and influences water conservancy diversion effect, and more preferably, vascular refrigerator flow-guiding structure also includes：Positioned at first
The support 901 of at least side of guide layer 501 and the support 902 positioned at the second guide layer at least side.Preferably, in the first water conservancy diversion
The both sides of layer 501 are provided with support 901, and are provided with support 902 in the both sides of the second guide layer 502.Support is
The net of supporting role, lateral dimension and the radial dimension of vascular 6 of support match, and are easy to make bracket clamp in vascular 6.Work as arteries and veins
When the cross section of pipe 6 is for circle, internal diameter of the stent diameter preferably with vascular 6 is identical.The design principle of support is to meet support
It is as far as possible thin under conditions of intensity, its barrier effect to air-flow is reduced as far as possible, so support is preferably with the structure shown in Fig. 5.
Although, with support 901 to illustrate, support 902 can also be using similar structure for Fig. 5.
The flow-guiding structure also includes：Connect the First Transition chamber of first guide layer 501 and the cold end connecting tube 4
101st, second guide layer 502 and the second adapter cavity 102 of the inertia tube 7 are connected, in the First Transition chamber 101
The first catch 111 and the second catch 112 in second adapter cavity 102；In order to play more preferable water conservancy diversion effect, the
Second catch 112 of one catch 111 can be thin rounded flakes, and First Transition chamber 101 and second adapter cavity 102 are loudspeaker
Mouth-shaped；First catch 111 is parallel with first guide layer 501, and just to the outlet of the cold end connecting tube 4；Institute
State the diameter of the diameter less than the cold end connecting tube 4 of the first catch 111；Second catch 112 and second guide layer
502 is parallel, and just to the entrance of the inertia tube 7；Diameter of the diameter of second catch 112 less than the inertia tube 7.
Fig. 4 is flow schematic diagram of the air-flow in structure shown in Fig. 3.When air-flow flows to vascular 6 from cold end connecting tube 4,
Air-flow is subject to the stop of the first catch 111 and is spread to surrounding in First Transition chamber 101, forms vortex, and kinetic energy is dissipated, speed
After degree is reduced, then uniform flowing is formed by the water conservancy diversion of the first guide layer 501, then enter back into vascular 6；When air-flow from vascular 6
When flowing to cold end connecting tube 4, although by after the first guide layer 501, the first catch 111 also has certain obstruction to air-flow, but
Because mean flow rate now is very low, air-flow more can swimmingly bypass the first catch 111 and enter cold end connecting tube 4, vascular 6
Still can inside keep uniform flowing.
From unlike flow-guiding structure shown in Fig. 1：The present invention changes airflow direction using catch, is dissipated simultaneously in adapter cavity
Air velocity is reduced, guide layer is then entered back into, and prior art is then as shown in Figure 1 to allow high velocity air to be directly entered water conservancy diversion
Layer, by the kinetic energy of the resistance dissipation air-flow of the guide layer of previous section, is carried out by the guide layer of aft section again after reducing speed
Water conservancy diversion.Therefore the water conservancy diversion layer resistance needed for the present invention will be much smaller than the resistance of the flow-guiding structure shown in Fig. 1, water conservancy diversion knot of the invention
Structure drag losses is small, and water conservancy diversion effect is good, and refrigeration machine cooling effect is greatly improved using flow-guiding structure of the invention.Such as Fig. 8 institutes
Show, traditional flow-guiding structure is big to refrigeration machine performance impact, compared with the new flow-guiding structure of the present invention, new flow-guiding structure refrigeration
Temperature is lower, and refrigerating capacity is also higher than traditional flow-guiding structure.So it can also be seen that using water conservancy diversion knot of the invention from Fig. 8
Structure, water conservancy diversion effect is good, and flowing is uniform in big runner, good refrigeration effect.
Embodiment 2
As shown in fig. 6-7, vascular refrigerator flow-guiding structure of the present invention is removed includes existing cold end connecting tube 4, vascular 6, is used to
Outside property pipe 7, also including the first guide layer 501 and the second guide layer 502 in the vascular 6.Wherein more preferably, described
One guide layer 501 and second guide layer 502 are uniform porous material, and the thickness of the second guide layer 502 typically compares institute
State the thickness of the first guide layer 501 big.First guide layer 501 and second guide layer 502 can be the smaller fibres of resistance
Dimension felt material, thickness can increase to 5mm or so, and fibrofelt by after high temperature sintering, being glued mutually between fleece
Knot together, with larger rigidity, therefore does not need support to be fixed it, makes structure simpler.
The flow-guiding structure also includes：Connect the First Transition chamber of first guide layer 501 and the cold end connecting tube 4
101st, second guide layer 502 and the second adapter cavity 102 of the inertia tube 7 are connected, in the First Transition chamber 101
The first catch 111 and the second catch 112 in second adapter cavity 102.It is same as Example 1, in order to play more
Good water conservancy diversion effect, the first catch 111 and the second catch 112 can be thin rounded flakes, First Transition chamber 101 and second mistake
Cross chamber 102 and be bell shape；First catch 111 is parallel with first guide layer 501, and just the cold end is connected
The outlet of adapter 4；Diameter of the diameter of first catch 111 less than the cold end connecting tube 4；Second catch 112 with
Second guide layer 502 is parallel, and just to the entrance of the inertia tube 7；The diameter of second catch 112 is used less than described
The diameter of property pipe 7.Wherein more preferably, first catch 111 is close to first guide layer 501, and second catch 112 is tight
Second guide layer 502 is pasted, this causes that processing and manufacturing is simpler, simultaneously as guide layer is thickened, low speed flow can be with
Catch is more swimmingly streamed, therefore does not interfere with the effect of water conservancy diversion.
Embodiment 3
Present invention also offers a kind of vascular refrigerator, including main radiator 1, regenerator 2, cool end heat exchanger 3 and air reservoir
8, also including the vascular refrigerator flow-guiding structure described in above-described embodiment 1 or 2.
By using flow-guiding structure of the invention, drag losses is small during water conservancy diversion, and water conservancy diversion effect is greatly improved, vascular
Interior air current flow is uniform, and the refrigerating capacity of refrigeration machine is substantially improved.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this hair
Various modifications and variations are made in the case of bright spirit and scope, such modification and modification are each fallen within by appended claims
Within limited range.
Claims (11)
1. a kind of vascular refrigerator flow-guiding structure, including：Cold end connecting tube, vascular, inertia tube, it is characterised in that also including position
In the first guide layer and the second guide layer in the vascular, connect first guide layer and the first of the cold end connecting tube
Adapter cavity, second guide layer is connected with the second adapter cavity, in the First Transition chamber first of the inertia tube
Catch and/or the second catch in second adapter cavity；
First catch is parallel with first guide layer, and just to the cold end connecting tube, the diameter of first catch
Less than the diameter of the cold end connecting tube；And/or,
Second catch is parallel with second guide layer, and just to the inertia tube, the diameter of second catch is less than
The diameter of the inertia tube.
2. vascular refrigerator flow-guiding structure according to claim 1, it is characterised in that first guide layer and described
Two guide layers are uniform porous material.
3. vascular refrigerator flow-guiding structure according to claim 2, it is characterised in that first guide layer and described
Two guide layers are web materials.
4. the vascular refrigerator flow-guiding structure according to claim 1-3 any one, it is characterised in that also include：It is located at
The first guide layer at least support of side and the support positioned at second guide layer at least side.
5. vascular refrigerator flow-guiding structure according to claim 4, it is characterised in that the support plays a supportive role
Net, the bracket clamp is in the vascular.
6. vascular refrigerator flow-guiding structure according to claim 1 and 2, it is characterised in that first guide layer and institute
It is fibrous felt materials to state the second guide layer.
7. vascular refrigerator flow-guiding structure according to claim 6, it is characterised in that first catch is close to described
One guide layer, second catch is close to second guide layer.
8. vascular refrigerator flow-guiding structure according to claim 1, it is characterised in that first catch and/or described
Second catch is circle.
9. vascular refrigerator flow-guiding structure according to claim 1, it is characterised in that the second guide layer thickness compares institute
State the first guide layer thickness big.
10. vascular refrigerator flow-guiding structure according to claim 1, it is characterised in that the First Transition chamber and described
Second adapter cavity is bell shape.
A kind of 11. vascular refrigerators, including：Main radiator, regenerator, cool end heat exchanger and air reservoir, it is characterised in that also include
Vascular refrigerator flow-guiding structure in claim 1-10 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510395116.4A CN105042922B (en) | 2015-07-07 | 2015-07-07 | Pulse tube refrigerator and flow guide structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510395116.4A CN105042922B (en) | 2015-07-07 | 2015-07-07 | Pulse tube refrigerator and flow guide structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105042922A CN105042922A (en) | 2015-11-11 |
| CN105042922B true CN105042922B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510395116.4A Active CN105042922B (en) | 2015-07-07 | 2015-07-07 | Pulse tube refrigerator and flow guide structure thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562450A (en) * | 2018-04-17 | 2018-09-21 | 中国科学院理化技术研究所 | A kind of regenerator drag characteristic test device under the conditions of profound hypothermia |
| CN109489300B (en) * | 2018-10-11 | 2020-11-27 | 同济大学 | Small-hole pulse tube thermoacoustic refrigerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2886449Y (en) * | 2006-04-28 | 2007-04-04 | 浙江大学 | Pulse tube refrigerator with cold end gas storage |
| CN103090578A (en) * | 2013-01-31 | 2013-05-08 | 中国科学院上海技术物理研究所 | Coaxial type pulse pipe refrigerator hot end inner diversion structure and manufacturing method thereof |
| CN103175329A (en) * | 2013-03-26 | 2013-06-26 | 中国科学院上海技术物理研究所 | Flow guide structure inside hot end of U-type / linear pulse tube refrigerating machine and manufacturing method thereof |
| CN203249422U (en) * | 2013-03-26 | 2013-10-23 | 中国科学院上海技术物理研究所 | Internal flow guide structure at hot end of U-shaped and linear pulse tube refrigerating machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001263840A (en) * | 2000-03-15 | 2001-09-26 | Sumitomo Heavy Ind Ltd | Pulse tube refrigerator |
-
2015
- 2015-07-07 CN CN201510395116.4A patent/CN105042922B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2886449Y (en) * | 2006-04-28 | 2007-04-04 | 浙江大学 | Pulse tube refrigerator with cold end gas storage |
| CN103090578A (en) * | 2013-01-31 | 2013-05-08 | 中国科学院上海技术物理研究所 | Coaxial type pulse pipe refrigerator hot end inner diversion structure and manufacturing method thereof |
| CN103175329A (en) * | 2013-03-26 | 2013-06-26 | 中国科学院上海技术物理研究所 | Flow guide structure inside hot end of U-type / linear pulse tube refrigerating machine and manufacturing method thereof |
| CN203249422U (en) * | 2013-03-26 | 2013-10-23 | 中国科学院上海技术物理研究所 | Internal flow guide structure at hot end of U-shaped and linear pulse tube refrigerating machine |
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| Publication number | Publication date |
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| CN105042922A (en) | 2015-11-11 |
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