CN110274407A - A kind of split type sterlin refrigerator with novel cold head structure - Google Patents
A kind of split type sterlin refrigerator with novel cold head structure Download PDFInfo
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- CN110274407A CN110274407A CN201910574464.6A CN201910574464A CN110274407A CN 110274407 A CN110274407 A CN 110274407A CN 201910574464 A CN201910574464 A CN 201910574464A CN 110274407 A CN110274407 A CN 110274407A
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- expansion
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- heat exchanger
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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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
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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
A kind of split type sterlin refrigerator with novel cold head structure according to the present invention, including bulge, with slit heat exchanger, two expansion cylinders and multiple heat pipes that slit heat exchanger surface is set of coaxial-symmetrical arrangement, the both ends of slit heat exchanger are arranged in coaxial-symmetrical to two expansion cylinders respectively, slit heat exchanger and two expansion cylinders are coupled and constitute cold head structure, slit heat exchanger is in regular polygon prism shape, its inner wall is provided with a plurality of linear slit groove, it is provided in cylinder so that the completely isolated separator in both ends, expansion piston is provided in expansion cylinder, expansion piston, expansion cylinder is constituted and slit heat exchanger constitutes expansion chamber, two expansion chambers for being located at the both ends of slit heat exchanger are disconnected in slit heat exchanger, heat pipe is arranged to inverted U-shaped, heat Skewer enters the surface of slit heat exchanger to two straight tubes of pipe respectively, multiple heat pipe nestings settings and in the same plane.
Description
Technical field
The invention belongs to refrigerating fields, and in particular to a kind of split type sterlin refrigerator with novel cold head structure.
Background technique
The theoretical refrigerating efficiency of sterlin refrigerator is equal to Carnot efficiency, and efficiency when actual motion is also current low temperature
Highest one kind of efficiency in refrigeration machine.Compressor is completely independent provided separately by split type sterlin refrigerator with expanding machine,
Be connected therebetween by pipe fitting, can to avoid or vibrate influence to cold head with reducing compressor, make cooled
Device is far from vibration source.Free-piston Stirling cooler structure is proposed by William Beale the 1960s, is led
It is characterized in that there is structure using technologies such as linear compressor driving, flexible board spring supporting, clearance seal combination gas bearing
Compact, low noise, service life length, high reliability.
Since space refrigeration has stringent want to the vibration of component and payload under the premise of improving refrigerating efficiency
While asking, therefore improve efficiency of refrigerator, reducing refrigeration machine vibration and improving payload is exactly space refrigerating machine always
Mainstream research direction, the space refrigerating machine of mainstream is mainly sterlin refrigerator and vascular refrigerator, vascular refrigerator at present
There is no moving component, thus it is with small vibration, it is light-weight, but the expansion work in vascular refrigerator vascular dissipates do not recycle completely, turns
Become heat to be dissipated in environment, therefore its refrigerating efficiency is always lower than sterlin refrigerator.Split type freedom used at present
Piston Stirling cooler reduces the vibration of refrigeration machine using one or two expanding machine of opposed pistons driven compressor, still
Without reducing the vibration of expanding machine part well.
Summary of the invention
To solve the above-mentioned problems, while guaranteeing that split type sterlin refrigerator own advantages are high-efficient, reduce expansion
Machine partial vibration, enhances reliability, and design is optimized to existing split type free-piston Stirling cooler in the present invention.
One of the objects of the present invention is to provide a kind of split type sterlin refrigerator with novel cold head structure, this hairs
It is bright to be improved on the basis of original split type free-piston Stirling cooler, replace tradition with a kind of novel cold head structure
Expanding machine cold head structure, by the outside of two expansion chambers expansion cylinder thin-wall tube and slit heat exchanger by welding manner into
Row coupling forms a novel cold head, and cold head cooling capacity is passed to required component by heat pipe and is freezed, and can be effectively reduced
The vibration of expanding machine.
The present invention provides a kind of split type sterlin refrigerators with novel cold head structure, have the feature that,
Including bulge, two expansion cylinders arranged with slit heat exchanger, coaxial-symmetrical and multiple settings are changed in slit
The heat pipe on hot device surface, wherein the both ends of slit heat exchanger are arranged in coaxial-symmetrical to two expansion cylinders respectively, and slit changes
Hot device and two expansion cylinders, which are coupled, constitutes cold head structure, and slit heat exchanger is in regular polygon prism shape, in
Wall is provided with a plurality of linear slit groove, is provided in cylinder so that the completely isolated separator in both ends, sets in expansion cylinder
It is equipped with expansion piston, expansion piston, expansion cylinder are constituted and slit heat exchanger constitutes expansion chamber, and two expansion chambers are coaxially right
Claim arrangement, be located at the both ends of slit heat exchanger, two expansion chambers at both ends be in slit heat exchanger it is disconnected,
Heat pipe is pulsating heat pipe, and heat pipe is arranged to inverted U-shaped, and skewer enters the surface of slit heat exchanger to two straight tubes of heat pipe respectively, multiple
Heat pipe nesting setting and in the same plane.
In the split type sterlin refrigerator provided by the invention with novel cold head structure, which is characterized in that also wrap
Include regenerator, in a ring tubular, be arranged on the outside of expansion piston and be located at the inside of expander cylinder, one end of regenerator with return
Hot device bearing is connected, and the other end is connected with slit heat exchanger.
In addition, can also have in the split type sterlin refrigerator provided by the invention with novel cold head structure
Such feature: where regenerator is made of any one in polyester film, nylon and polytetrafluoroethylene material,
Polyester film with a thickness of 20~50 μm.
In addition, in the split type sterlin refrigerator provided by the invention with novel cold head structure, which is characterized in that
Further include compression unit, there is compression cylinder, there are two the compression piston of coaxial-symmetrical arrangement, two compressions for setting in compression cylinder
Piston and compression cylinder constitute compression chamber.
In addition, can also have in the split type sterlin refrigerator provided by the invention with novel cold head structure
Such feature: where expansion cylinder wall pipe and slit heat exchanger on the outside of expansion chamber are coupled in one by welding
It rises.
In addition, can also have in the split type sterlin refrigerator provided by the invention with novel cold head structure
Such feature: where compression unit includes two compression pistons, two compression pistons that coaxial-symmetrical is arranged in compression cylinder
Bar, two compression piston connectors, two linear electric machines, two flat springs and two flat spring brackets, inside compression piston
For hollow design, compression piston tail portion is connected with compression piston connector, and compression piston bar is arranged in compression piston connector,
Piston rod one end is connected at the top of compression piston, and the other end is connected with flat spring.
In addition, can also have in the split type sterlin refrigerator provided by the invention with novel cold head structure
Such feature: where bulge includes two expansion pistons, two backheats that coaxial-symmetrical is arranged in two expansion cylinders
Device, two expansion piston connectors, two springs, expansion piston inside are hollow, expansion piston tail portion opening and expansion piston
Connector is connected, and one end of spring is connected with expansion piston connector, and the other end is connected with spring support.
In addition, in the split type sterlin refrigerator provided by the invention with novel cold head structure, which is characterized in that
It further include conduit connection, three with a right compression conduit, two expansion pipelines, connection right compression conduit and two expansion pipelines
It passes to and two solenoid valves, wherein solenoid valve is arranged in threeway and expands the interface of pipeline.
In addition, in the split type sterlin refrigerator provided by the invention with novel cold head structure, which is characterized in that
It further include the compression cylinder radiator being arranged in outside compression chamber, compression cylinder radiator and ambient enviroment carry out heat convection,
The compression heat generated in compression chamber is discharged.
The action and effect of invention
With the split type sterlin refrigerator of novel cold head structure involved according to the present invention, because cold head structure will
Expansion cylinder thin-walled and slit heat exchanger on the outside of two expansion chambers, which link together, forms novel cold head, therefore, reduces
The vibration of the expanding machine of conventional two-piece free-piston type sterlin refrigerator, greatly improve refrigeration machine stability and
Reliability.
In addition, expanding machine uses the expansion piston of two coaxial-symmetricals arrangement, two expansion chambers and slit are exchanged heat
Device is coupled by welding manner, it is ensured that axial force can obtain maximum balance, be greatly reduced vibration, enhancing
Reliability.
Further, use pulsating heat pipe as heat pipe, the simple centreless of structure, shape can be arbitrarily bent, equivalent heat transfer
Coefficient is big, small in size, is a kind of high heat flux density, miniaturization and heat transfer element at low cost.
Further, compressor uses the compression piston of two coaxial-symmetricals arrangement, reduces the vibration of compressor.
Further, the present invention provides the expanding machine that an opposed Linearkompressor is arranged to two coaxial-symmetricals to pressure
Wave, by the working condition for the expansion chamber that two coaxial-symmetricals of open and close control of valve are arranged, have high-efficient, high reliablity,
Vibrate low plurality of advantages.
Further, it selects pulsating heat pipe to be combined with cold head, efficiently utilizes pulsating heat pipe high heat flux density, body
Product is small, the advantages of being arbitrarily bent, ensure that effective transmitting of cooling capacity.
Compared with traditional split type free-piston Stirling cooler, the fission with novel cold head structure of the invention
Formula sterlin refrigerator has many advantages, such as with small vibration, and stability is high, is applicable to the aviation of different cryogenic temperatures and refrigerating capacity
AEROSPACE APPLICATION field is also suitble to wine cabinet etc. to require high occasion to reliability and vibration.
Detailed description of the invention
Fig. 1 is the split type sterlin refrigerator diagrammatic cross-section in the embodiment of the present invention with novel cold head structure；
Fig. 2 is the perspective cross-sectional schematic diagram of cold head structure in the embodiment of the present invention；
Fig. 3 is a kind of stereoscopic schematic diagram of cold head structure in the embodiment of the present invention；
Fig. 4 is the stereoscopic schematic diagram of cold head structure and the connection type of coiled heat pipe in the embodiment of the present invention；
Fig. 5 is the stereoscopic schematic diagram of cold head structure and the connection type of straight pipe type heat pipe in the embodiment of the present invention two；With
And
Fig. 6 is the perspective cross-sectional schematic diagram of cold head structure in the embodiment of the present invention three.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing is applied to be specifically addressed the split type sterlin refrigerator with novel cold head structure of the invention.
Embodiment one
As shown in Figure 1, the split type sterlin refrigerator 100 with novel cold head structure includes compression unit 200, bulge
300, conduit connection 400.
Compression unit 200 is by two Linearkompressors 210, two compression pistons 220, compression chamber 230, compressor back pressure cavities
240, upper and lower compressor housing 250, compression cylinder and radiator 260, flanged joint 270 form.
Two Linearkompressors 210 are all by interior yoke and mover 211, permanent magnet 212, permanent magnetism body support frame 213, coil
Skeleton 214, coil 215, outer yoke 216 form.Wherein, there is gap, mover setting between interior yoke 211 and outer yoke 216
In gap, mover includes permanent magnet 212 and permanent magnetism body support frame 213.Outer yoke 216 and interior yoke 211 are soft magnetic materials, are commonly used
The materials such as electric work pure iron, silicon steel sheet are made, and two permanent magnets 212 are made of permanent-magnet material.Interior yoke 211, permanent magnet 212, forever
Magnet carrier 213, coil rack 214, coil 215, outer yoke 216 are annular, and using coaxially arranged.
When coil is passed through direct current, magnetic force loop line will form between interior yoke 211 and outer yoke 216, thus in interior yoke
Magnetic pole is generated on iron and outer yoke 216.When coil is passed through alternating current, permanent magnet 212 will receive alternating electromagnetic force just to do
Linear reciprocating motion.When permanent magnet 212 does linear reciprocating motion, it will drive compression piston 220 and do linear reciprocating motion, plate bullet
Spring 224 provides axial reciprocating elastic power and radial support.
220 inner hollow of compression piston, hollow inside are equipped with threaded hole 221 and 222 spiral shell of compression piston bar close to piston area
It connects, 220 tail portion opening of compression piston is spirally connected with connector 223, and compression piston bar 222 passes through in 223 surface of connector
Heart hole is fixedly connected with flat spring 224, and cooperation is fixed by bolt with flat spring bracket 225 in flat spring 224.Wherein, plate
Spring support 225 is integrated with compressor housing 250, is made of 4 studs.
The compression piston 220 and compression cylinder 260 of two coaxial-symmetricals arrangement constitute compression chamber 230.
Upper and lower compressor housing 250 connect cooperation by flanged joint 270 with compression cylinder and radiator, same by two
The compressor housing 250 and compression chamber 230 of axial symmetry arrangement are closed, and form an entirety.
One end of right compression conduit 401 is connected to compression chamber, and the other end is connected to threeway 404, and Linearkompressor 210 passes through after being powered
Compression piston bar 222 drives mover and compression piston 210 to move, after gas working medium is compressed by compression piston 210, by compression chamber
230 flow to right compression conduit 401.
The heat of compression that 210 compressed gas working medium of compression piston generates timely is discharged by compression cylinder and radiator 260
In ambient enviroment, to improve the working efficiency of compressor.
Bulge 300 is expanded by two expansion pistons 320, two regenerator 330, two of expanding machine back pressure cavity 310, two
Chamber 340, slit heat exchanger 350, heat pipe 360, expander cylinder and shell 370, flanged joint 380 form.
The design of 320 inner hollow of expansion piston, 320 tail portion of expansion piston opening are spirally connected with connector 321, connector
321 are spirally connected fixation with 322 threaded of spring, spring 322 and spring support 323, and spring support bearing 324 is by spring support
323 are fixed on expanding machine shell 370.
The tubular in a ring of regenerator 330, setting is in 320 outside of expansion piston, 370 inside of expander cylinder, one end with return
Hot device bearing 331 is connected, and the other end is connected with slit heat exchanger 360.Regenerator 330 using polyester film, nylon and
Any one in polytetrafluoroethylene material is made, and regenerator 330 is made of polyester film in embodiment one, and polyesters are thin
Film with a thickness of 20~50 μm.
As shown in Fig. 2, slit heat exchanger 350 and the pipe of expansion cylinder 370 in two 340 outsides of expansion chamber pass through welding
Mode, which is coupled, forms a new cold head structure.
In embodiment, 370 tube wall of expansion cylinder in 340 outside of expansion chamber is thin-walled, and material is stainless steel, slit heat exchange
Device 350 is made and cylindrical of red copper, is had the gap between expansion cylinder 370 and slit heat exchanger 350, gap is filled out with solder
It is charged into capable welding.350 interior surface of slit heat exchanger is provided with multiple slit grooves, to enhance heat transfer coefficient, strengthens cold head
Conduction cooling effect.In embodiment, the linear shape of the slit, direction is parallel with the axis of cylinder.
As shown in Figure 1, two expanding machine back pressure cavities 310 and two 340 coaxial-symmetrical of expansion chamber arrangements.Expanding machine shell
370 tail portions are equipped with flanged joint 380, and bulge 300 can connect cooperation with external fixation device by flanged joint 380,
The vibration of refrigeration machine is further decreased, stability is enhanced.
Conduit connection 400 include right compression conduit 401, first expand pipeline 402, second expand pipeline 403, threeway 404,
First solenoid valve 405, second solenoid valve 406.
401 one end of right compression conduit is connected with compression chamber, and the other end is connected with threeway 404, other two gas of threeway 404
Hole is connected with the first expansion pipeline 402 and the second expansion pipeline 403 respectively, and the setting of the first solenoid valve 405 is in threeway 404 and the
The connectivity part of threeway 404 and the second expansion pipeline 403 is arranged in the connectivity part of one expansion pipeline 402, second solenoid valve 406, the
One expansion pipeline 402 and the second expansion pipeline 403 are connected to expanding machine back pressure cavity 310 respectively.
Compressed gas is shunted by threeway 404, passes through the first expansion pipeline 402 and the second expansion pipeline 403 respectively
Expansion piston 320 is pushed to do linear reciprocating motion after into expanding machine back pressure cavity 310, spring 322 provides axial reciprocal elastic force
And radial support.Compressed gas pushes expansion piston 320 to be moved to 330 inlet of regenerator in regenerator 330 for heat
Regenerator matrix is passed to, then swell refrigeration, cooling capacity are changed by slit in expansion chamber 340 and slit heat exchanger 350
Hot device 350 passes to heat pipe 360, and cooling capacity is passed to the component for needing to freeze by the working medium in heat pipe 360.
As shown in Figure 3,4, heat pipe 360 is coiled pulsating heat pipe, is arranged on the outer surface of slit heat exchanger 350,
Pulsating heat pipe can be arbitrarily bent as a kind of new heat pipe, the simple centreless of structure, shape, and equivalent heat transfer coefficient is big, small in size.
Embodiment two
The present embodiment other structures are the same as example 1, the difference is that slit heat exchanger 350, as shown in figure 5, this reality
It applies in regular pentagon prism shape outside the slit heat exchanger 350 in example, it is recessed that the surface of inner passage is still provided with slit
Slot.
Multiple heat pipes are respectively arranged on each pentagonal prisms face, heat pipe still uses pulsating heat pipe, and heat pipe is arranged to
Inverted U-shaped, heat pipe transmits cooling capacity in the form of 2 straight tube cuttages enter 350 surface of slit heat exchanger.
In embodiment, multiple U-shaped heat pipe nestings are disposed on the same plane.
Embodiment three
The present embodiment other structures are the same as example 1, the difference is that 350 internal channel structure of slit heat exchanger is not
Together, as shown in fig. 6, being provided in 350 inner passage of slit heat exchanger so that the completely isolated separator or insulating course in both ends
351, the channel at 350 inside both ends of slit heat exchanger be it is obstructed, two expansion chambers 340 no longer pass through slit heat exchanger
The connection of 350 inner passages.
When 350 inner passage of slit heat exchanger is not connected to, the solenoid valve of two expansion tube roads can be operated, is controlled
It into the working medium flow of two expansion chambers, and then realizes that the refrigerating capacity for controlling two expansion chamber cold heads is different, reaches slit and change
The different effect of cryogenic temperature at hot 350 both ends of device.
Example IV
The present embodiment other structures are identical as embodiment two, the difference is that 350 internal channel structure of slit heat exchanger is not
Together, as shown in fig. 6, being provided in 350 inner passage of slit heat exchanger so that the completely isolated separator or insulating course in both ends
351, the channel at 350 inside both ends of slit heat exchanger be it is obstructed, two expansion chambers 340 no longer pass through slit heat exchanger
The connection of 350 inner passages.
When 350 inner passage of slit heat exchanger is not connected to, the solenoid valve of two expansion tube roads can be operated, is controlled
It into the working medium flow of two expansion chambers, and then realizes that the refrigerating capacity for controlling two expansion chamber cold heads is different, reaches slit and change
The different effect of cryogenic temperature at hot 350 both ends of device.
The action and effect of embodiment
A kind of split type sterlin refrigerator with novel cold head structure according to involved in the present embodiment, because of cold head
Expansion cylinder thin-walled on the outside of two expansion chambers is formed novel cold head by structure together with slit Welding of Heat-exchanger, because
This, reduces the vibration of the expanding machine of conventional two-piece free-piston type sterlin refrigerator, greatly improves refrigeration machine
Stability and reliability.
In addition, expanding machine uses the expansion piston of two coaxial-symmetricals arrangement, two expansion chambers and slit are exchanged heat
Device is coupled by welding manner, it is ensured that axial force can obtain maximum balance, be greatly reduced vibration, enhancing
Reliability.
Further, use pulsating heat pipe as heat pipe, the simple centreless of structure, shape can be arbitrarily bent, equivalent heat transfer
Coefficient is big, small in size, is a kind of high heat flux density, miniaturization and heat transfer element at low cost.
Further, compressor uses the compression piston of two coaxial-symmetricals arrangement, reduces the vibration of compressor.
Further, the present embodiment provides the expanding machine that an opposed Linearkompressor is arranged to two coaxial-symmetricals to pressure
Reeb has high-efficient, reliability by the working condition for the expansion chamber that two coaxial-symmetricals of open and close control of valve are arranged
High, the low plurality of advantages of vibration.
Further, it selects pulsating heat pipe to be combined with cold head, efficiently utilizes pulsating heat pipe high heat flux density, body
Product is small, the advantages of being arbitrarily bent, ensure that effective transmitting of cooling capacity.
Further, the opening and closing of the solenoid valve of two expansion tube roads can control the working condition of expansion chamber, realize not
Same cryogenic temperature and refrigerating capacity requires stringent occasion to vibration suitable for aerospace and chateau etc..
Compared with traditional split type free-piston Stirling cooler, point with novel cold head structure of the present embodiment
Body formula sterlin refrigerator has many advantages, such as with small vibration, and stability is high, is applicable to the boat of different cryogenic temperatures and refrigerating capacity
Empty AEROSPACE APPLICATION field is also suitble to wine cabinet etc. to require high occasion to reliability and vibration.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.
Claims (9)
1. a kind of split type sterlin refrigerator with novel cold head structure characterized by comprising
Bulge, two expansion cylinders arranged with slit heat exchanger, coaxial-symmetrical and multiple settings are in the slit
The heat pipe of formula heat exchanger surface,
Wherein, the both ends of the slit heat exchanger, the slit heat exchange is arranged in coaxial-symmetrical to two expansion cylinders respectively
Device and two expansion cylinders are coupled and constitute cold head structure,
The slit heat exchanger is in regular polygon prism shape, and inner wall is provided with a plurality of linear slit groove, in cylinder
It is provided with so that the completely isolated separator in both ends,
Expansion piston is provided in the expansion cylinder, the expansion piston, the expansion cylinder constitutes and the slit
Heat exchanger constitutes expansion chamber,
Two expansion chamber coaxial-symmetrical arrangements, are located at the both ends of the slit heat exchanger, two expansions at both ends
Chamber be in the slit heat exchanger it is disconnected,
The heat pipe is pulsating heat pipe, and the heat pipe is arranged to inverted U-shaped, and skewer enters the slit to two straight tubes of the heat pipe respectively
The surface of formula heat exchanger,
Multiple heat pipe nestings settings and in the same plane.
2. split type free-piston Stirling cooler according to claim 1, which is characterized in that further include:
Regenerator, tubular, is arranged on the outside of the expansion piston and is located at the inside of the expander cylinder in a ring,
One end of the regenerator is connected with regenerator bearing, and the other end is connected with the slit heat exchanger.
3. split type free-piston Stirling cooler according to claim 2, it is characterised in that:
Wherein, the regenerator is made of any one in polyester film, nylon and polytetrafluoroethylene material,
The polyester film with a thickness of 20~50 μm.
4. split type free-piston Stirling cooler according to claim 1, which is characterized in that further include:
Compression unit has compression cylinder, and there are two the compression piston of coaxial-symmetrical arrangement, two institutes for setting in the compression cylinder
It states compression piston and the compression cylinder constitutes compression chamber.
5. split type free-piston Stirling cooler according to claim 1, it is characterised in that:
Wherein, the expansion cylinder wall pipe on the outside of the expansion chamber and the slit heat exchanger are coupled in one by welding
It rises.
6. split type free-piston Stirling cooler according to claim 4, it is characterised in that:
Wherein, the compression unit includes two compression pistons, two institutes that coaxial-symmetrical is arranged in the compression cylinder
Compression piston bar, two compression piston connectors, two linear electric machines, two flat springs and two flat spring brackets are stated,
It is hollow design inside the compression piston, the compression piston tail portion is connected with the compression piston connector, described
Compression piston bar is arranged in the compression piston connector, and described piston rod one end is connected at the top of the compression piston, separately
One end is connected with the flat spring.
7. split type free-piston Stirling cooler according to claim 1, it is characterised in that:
Wherein, the bulge includes two expansion pistons, two that coaxial-symmetrical is arranged in two expansion cylinders
A regenerator, two expansion piston connectors, two springs,
Be inside the expansion piston it is hollow, the expansion piston tail portion opening is connected with the expansion piston connector, described
One end of spring is connected with the expansion piston connector, and the other end is connected with the spring support.
8. split type free-piston Stirling cooler according to claim 1, which is characterized in that further include:
Conduit connection has a right compression conduit, two expansion pipelines, is connected to the right compression conduit and two expansion tubes
The threeway on road and two solenoid valves,
Wherein, the interface of the threeway and the expansion pipeline is arranged in the solenoid valve.
9. split type free-piston Stirling cooler according to claim 1, which is characterized in that further include:
Compression cylinder radiator outside the compression chamber is set,
The compression cylinder radiator and ambient enviroment carry out heat convection, and the compression heat generated in the compression chamber is arranged
Out.
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Application publication date: 20190924 |