CN102713467B - Cryogenic refrigerator - Google Patents
Cryogenic refrigerator Download PDFInfo
- Publication number
- CN102713467B CN102713467B CN201080061617.4A CN201080061617A CN102713467B CN 102713467 B CN102713467 B CN 102713467B CN 201080061617 A CN201080061617 A CN 201080061617A CN 102713467 B CN102713467 B CN 102713467B
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- Prior art keywords
- cylinder
- ultra
- low temperature
- piston
- refrigerating device
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- Expired - Fee Related
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/001—Gas cycle refrigeration machines with a linear configuration or a linear motor
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/073—Linear compressors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Linear Motors (AREA)
Abstract
According to the present invention, a cryogenic refrigerator comprises: a sealed shell; a fixed member which is arranged in the sealed shell and which includes a cylinder; a movable member including a piston which reciprocates in an axial direction within the cylinder, and a displacer which reciprocates in the direction opposite to the piston; a permanent magnet connected to the piston; and an inner stator and an outer stator which are installed to maintain air gaps between the permanent magnet and the inner and outer stators, and which enable the permanent magnet to reciprocate by mutual electromagnetic force, wherein the inner stator is fixed so as to contact an outer surface of the cylinder, and the outer stator is fixed at an inner surface of the sealed shell. According to the present invention, the inner stator and the outer stator can be firmly installed to achieve improved operating reliability of the cryogenic refrigerator.
Description
Technical field
The present invention relates to a kind of ultra-low temperature refrigerating device, particularly relating to can by the ultra-low temperature refrigerating device arranging structure to raise the efficiency of improved cylinder and inner stator.
Background technology
Usually, ultra-low temperature refrigerating device is as the low vibration of cool small electronic component or superconductor etc., high reliability refrigeration machine, produce refrigeration work consumption by processes such as the compression of the working fluid of helium or hydrogen etc. or expansions, that is widely known by the people representative has sterlin refrigerator (Stirling refrigerator) and GM refrigeration machine (GM refrigerator) or Joule-Thomson refrigeration machine (Joule-Thomson refrigerator) etc.Not only there is the problem that its reliability reduces when running up in this refrigeration machine, also depositing is the problem that the wearing and tearing tackling friction position need be lubricated separately in the running.Therefore, need one can not only maintain its reliability in running up, but also without the need to lubricating, can not carrying out for a long time the ultra-low temperature refrigerating device that keeps in repair separately, what be suitable in the recent period is that the working fluid of high pressure plays a kind of bearing and is used for the unlubricated ultra-low temperature refrigerating device of the friction between minimizing part.
This ultra-low temperature refrigerating device is configured to, and compresses, extracts in compression stroke to cold-producing medium, after heat radiation and regenerative process, expands, by environment temperature being maintained ultra low temperature state with the heat exchange action of surrounding air in expansion space.Now, ultra-low temperature refrigerating device comprises: cylinder, forms the compression stroke of cold-producing medium; Piston, carries out linear reciprocating motion in the inner side of cylinder; And linear electric machine, drive piston, this linear electric machine is made up of inner stator and external stator and permanent magnet.
Summary of the invention
Technical problem
What the object of the present invention is to provide the inner stator in ultra-low temperature refrigerating device in the past and external stator preferably arranges structure, improves the operating reliability of ultra-low temperature refrigerating device.
The means of dealing with problems
For the ultra-low temperature refrigerating device of the present invention solved the problem, it is characterized in that, comprise: closed shell, fixed part, it is located at the inside of closed shell, this fixed part comprises cylinder, movable member, its inner side being included in cylinder is axially carried out the piston of linear reciprocating motion and carries out the displacer of linear reciprocating motion along the direction contrary with piston, permanent magnet, it is connected with piston, and inner stator and external stator, be set to maintain gap with permanent magnet, by mutual electromagnetic force, permanent magnet back and forth driven; Inner stator is fixed on the outer peripheral face of cylinder in the mode that can contact, and external stator is fixed on the inner peripheral surface of closed shell in the mode that can contact.
Here, preferably, ultra-low temperature refrigerating device comprises leaf spring, and this spring supports displacer; Leaf spring is fixed on external stator by miscellaneous part.
Meanwhile, preferably, ultra-low temperature refrigerating device comprises support, and one end of this support is bolted the edge in leaf spring; The other end of support is fixedly welded on external stator.
Meanwhile, preferably, closed shell comprises the package of drum and the framework be fixedly welded on this package; External stator is fixedly welded on framework.
More preferably, ultra-low temperature refrigerating device can comprise multiple adhesion groove, and above-mentioned multiple adhesion groove is arranged at the outer peripheral face of cylinder, for accommodating the adhesive be fixed on by inner stator on the outer peripheral face of cylinder.
Further, adhere to groove and can have the ring-type that the outer peripheral face along cylinder formed in a circumferential direction.
Further, multiple adhesion groove axially can have predetermined distance at cylinder.
Further, the cross section of multiple adhesion groove is formed as, and along with the degree of depth of the outer peripheral face apart from cylinder deepens, its width just narrows.
Further, only epoxy resin can be coated with in the inside adhering to groove.
Ultra-low temperature refrigerating device of the present invention, comprise: closed shell, fixed part, be located at the inside of closed shell, this fixed part comprises cylinder, movable member, the inner side being included in cylinder is axially carried out the piston of linear reciprocating motion and carries out the displacer of linear reciprocating motion along the direction contrary with piston, permanent magnet, it is connected with piston, and inner stator and external stator, be set to maintain gap with permanent magnet, by mutual electromagnetic force, permanent magnet back and forth driven; Inner stator is fixed on the outer peripheral face of cylinder in the mode that can contact, and external stator is fixed on the inner peripheral surface of closed shell in the mode that can contact; Leaf spring, is fixed on closed shell, the end of this leaf spring resiliency supported displacer.
Ultra-low temperature refrigerating device of the present invention, comprise: closed shell, fixed part, be located at the inside of closed shell, this fixed part comprises cylinder, movable member, the inner side being included in cylinder is axially carried out the piston of linear reciprocating motion and carries out the displacer of linear reciprocating motion along the direction contrary with piston, permanent magnet, it is connected with piston, and inner stator and external stator, be set to maintain gap with permanent magnet, by mutual electromagnetic force, permanent magnet back and forth driven; Inner stator is fixed on the outer peripheral face of cylinder in the mode that can contact, and external stator is fixed on the inner peripheral surface of closed shell in the mode that can contact; Leaf spring, is fixed on closed shell, the end of this leaf spring resiliency supported displacer; Above-mentioned ultra-low temperature refrigerating device comprises multiple adhesion groove, described multiple adhesion groove is arranged at the outer peripheral face of cylinder, for accommodating the adhesive be fixed on by inner stator on the outer peripheral face of cylinder, described adhesion groove has the ring-type that the outer peripheral face along cylinder is formed in a circumferential direction, and described multiple adhesion groove axially has predetermined distance at cylinder.
The effect of invention
The ultra-low temperature refrigerating device of the present invention of formation described above only applies after as the adhesive of epoxy resin etc. at the adhesion groove of the outer peripheral face being located at cylinder, due to sub-folder decided at the higher level but not officially announced be bonded at the outer peripheral face of cylinder while be fixed, thus can prevent adhesive from leaking between inner stator and cylinder while reducing the use amount of adhesive, the disengaging that inner stator can also prevent inner stator can not only be firmly fixed, thus there is the advantage that can ensure operating reliability.
Accompanying drawing explanation
Fig. 1 is the side view of the preferably example that ultra-low temperature refrigerating device of the present invention is shown.
Fig. 2 is the side, sectional stereogram of the preferably example that ultra-low temperature refrigerating device of the present invention is shown.
Fig. 3 is the side sectional view of the preferably example that ultra-low temperature refrigerating device of the present invention is shown.
Fig. 4 is the exploded view of the fixed structure of the preferred inner stator that ultra-low temperature refrigerating device of the present invention is shown.
Detailed description of the invention
Below, embodiments of the invention will be described in detail with reference to accompanying drawing.
Fig. 1 to Fig. 3 is the figure of the example that ultra-low temperature refrigerating device of the present invention is shown.
As shown in Figure 1 to Figure 3, an example of ultra-low temperature refrigerating device of the present invention comprises: shell (case) 10, and it is for the formation of outward appearance; Fixed part 20, it is fixed on the inside of shell 10, forms predetermined space; Movable member 30, its compression stroke C in fixed part 20 axially carries out linear reciprocating motion and compresses cold-producing medium and expand; Linear electric machine (linear motor) 40, it is arranged between shell 10 and fixed part 20, drives movable member 30; Regenerator 50, itself and movable member 30 axially combine, to realize equal-volume regeneration between the cold-producing medium of direction contrary mutually flowing; Radiating part 60, it is installed on the periphery of fixed part 20 and movable member 30 and regenerator 50, externally distributes by the heat of the cold-producing medium compressed; Cooling end 70, it is axially combined to form expansion space E with regenerator 50, makes the heat of the refrigerant suction outside of expanding.
Shell 10 comprises and to form concentric framework (frame) 11 with regenerator 50, radiating part 60 and cooling end 70, is axially connected with framework 11 and the package (shell tube) 12 of fixing drum.Framework 11 is connected preferably by welding with package, and forms closed shell therein.Even if the diameter that fixed part 20 is formed by the part of fastened by screw in framework 11 is less than package 12, but its thickness is very thick, and in order to improve heat exchanger effectiveness, the thickness that the part of installing radiating part 60 in framework 11 is formed is relatively thin.Thering is provided predetermined pipe 13 at package 12, after making the inside of shell 10 be in the vacuum state of height by exhaust, inject the cold-producing medium of pure helium (He) gas etc., being therefore provided for exhaust or the pipe 13 for injecting cold-producing medium.In addition, package 12 also has the power supply terminal 14 supplying power supply to linear electric machine 40.
Fixed part 20 extend to while being included in and being fixed on framework 11 inner side of package 12 cylinder (cylinder) 21, extend from cylinder 21 with the displacer outer cover (displacer housing) 22 matched with the inner side of framework 11.Cylinder 21 and displacer outer cover 22 are in the drum having difference in height, and the diameter of displacer outer cover 22 is less than the diameter of cylinder 21, and framework 11 is fixed on by screw in the coupling part extended from the outer peripheral face of cylinder 21.At this moment, cylinder 21 and displacer outer cover 22 will form the compression stroke C of compressed refrigerant in inside, and have through hole 21h, 22h of being communicated with the heat-dissipating space D of the inner side of radiating part 60 respectively.
The inside that movable member 30 is included in cylinder 21 is driven by linear electric machine 40 described later and carries out the piston (piston) 31 of linear reciprocating motion, carries out in the opposite direction along the side with piston 31 in linkage the displacer (displacer) 32 of linear reciprocating motion in the inside of displacer outer cover 22 according to the action-reaction law of the linear reciprocating motion to piston 31.The piston only (piston body) 311 that piston 31 stays gap to arrange by the inner peripheral surface at cylinder 21 is formed with the piston plug-in unit (piston plug) 312 of the inner side being arranged on piston only 311.Displacer 32 by while the center of through piston plug-in unit 312 by the displacer rod (displacer rod) 321 that is supported with being fixed on the leaf spring S available buffer of shell 10 and the displacer body 321a axially accommodating/be combined in the end as the displacer rod 321 being built in displacer outer cover 22, the displacer lid (displacer cover) 322 forming the predetermined space making flow of refrigerant is formed, and forms compression stroke C between piston 31 and displacer body 321a.Now, the cross section of displacer body 321a in " U " font while there is the 1st through hole 321h, the 2nd through hole 321H that are communicated with the inner side of radiating part 60, and displacer lid 322 pressure differential not only had by the suction inlet (not shown) be communicated with regenerator 50 carrys out the displacer valve 323 of opening and closing, also has the through hole 322H be communicated with the inner side of displacer body 321a.
On the other hand, because movable member 30 carries out linear reciprocating motion, except leaf spring S, thus also adopt the gas bearing of the part lubrication that can make friction mutually, the structure formed is as follows.Axis along piston plug-in unit 312 has the stream 312a that the cold-producing medium of compression stroke C can be made to flow into; And there are the outer peripheral face along piston plug-in unit 312 that is communicated with therewith circumferentially multiple accumulator tank 312b of being formed of direction; And have by the through multiple hole 311h of the radial direction of piston only 311, make the cold-producing medium of the accumulator tank 312b being stored in piston plug-in unit 312 be fed to space between piston only 311 and cylinder 21; And have by the through multiple hole 312h of the radial direction of piston plug-in unit 312, make the cold-producing medium of the accumulator tank 312b being stored in piston plug-in unit 312 be fed to space between piston plug-in unit 312 and displacer rod 321.Certainly, in order to the cold-producing medium of the accumulator tank 312b being stored in piston plug-in unit 312 is guided to the hole 311h of the piston only 311 or hole 312h of piston plug-in unit 312, at outer peripheral face circumferentially direction or the variform groove of axial tool (not shown) of piston plug-in unit 312, provide between compression stroke C and accumulator tank 312b and can make the piston valve of unidirectional flow of refrigerant (not shown).
Linear electric machine 40 comprises: cylindrical shape inner stator (inner stator) 41, and it is fixed on the outer peripheral face of cylinder 21 in the mode that can contact; Cylindrical shape external stator (outer stator) 42, it is fixed on the inner peripheral surface of package 12 in the mode that can contact, to maintain predetermined distance with the outside of inner stator 41; Permanent magnet 43, it is connected with piston only 311, to maintain the predetermined distance between inner stator 41 and external stator 42.Certainly, external stator 42 is provided with multiple pellet (core block) 422 at coil wound body 421, and this coil wound body 421 is connected with the power supply terminal 14 of shell 10 side.One end of the pellet 422 of external stator 42 is supported by framework 11, and preferably by being fixedly welded on framework 11, the other end is supported by support 16.Support 16 is fixed on the periphery of leaf spring S by screw.That is, one end of external stator is supported by framework 11, and the other end is supported by the support 16 be connected with leaf spring S-phase.
Regenerator 50 comprises: regeneration outer cover 51, and it is combined with displacer outer cover 22, cylindrical shape; Heat-storing material 52, it is inserted into a part of displacer body 321a and the inner side of regeneration outer cover 51; End cap (end cap) 53, it adheres to hiding the end of heat-storing material 52.Cold-producing medium is by heat-storing material 52 and end cap 53.Because heat-storing material 52 plays by contacting the effect of carrying out returning again after heat exchange carrys out accumulation of energy with refrigerant gas, therefore not only heat exchange area and specific heat is large but also heat transfer coefficient is little, preferably be made up of the material with uniform gas permeability, as an example, the morphosis can rolled into a ball by fine rule.
Radiating part 60 is made up of the base 61 of drum and the plate shape fin 62 that is circumferentially arranged closely in this base 61, and the metal material of the copper high by heat transference efficiency etc. formed.
Cooling end 70 is arranged on the end of regenerator 50, to form expansion space E between energy and end cap 53, maintains ultralow temperature by heat exchange action.Certainly, cooling end 70 can be configured to, in order to the effect playing heat exchange between the cold-producing medium and the air of outside of inside forms wider surface area.
In addition, shown in unaccounted Reference numeral 80 is passive equilibrium device (passive balancer), and this passive equilibrium device can comprise the leaf spring of the vibration reducing the closed shell produced when operating ultra-low temperature refrigerating device.
Watch the running of ultra-low temperature refrigerating device as constituted above, as follows.
First, if supply power supply by power supply terminal 14 to external stator 42, then between inner stator 41 and external stator 42 and permanent magnet 43, can produce electromagnetic force mutually, permanent magnet 43 will carry out linear reciprocating motion by this electromagnetic force.At this moment, because permanent magnet 43 and piston only 311 and the piston plug-in unit 312 that matches therewith are connected, thus piston 31 will carry out linear reciprocating motion together with permanent magnet 43.Therefore, once piston 31 carries out linear reciprocating motion in the inside of cylinder 21, according to action-reaction law, displacer 32 carries out rightabout motion by the motion of piston 31, obtain resiliency supported by leaf spring S simultaneously, linear reciprocating motion rightabout with the motion of piston will be carried out thus.
Therefore, through following process: by the rightabout linear reciprocating motion of piston 31 and displacer 32, through the through hole 21h of cylinder 21 while the compression stroke C compressed refrigerant of the inside of cylinder 21, radiating part 60 while the heat-dissipating space D via the inner side of framework 11, is utilized to carry out the isotherm compression process of dispelling the heat.When compression stroke C is compressed, because displacer body 321a also together moves with the heat-storing material 52 of regenerator, thus negative relative is formed in the inside of expansion space E, make the cold-producing medium through isotherm compression process be flow into the inside of the heat-storing material 52 of regenerator by the through hole 22h of displacer outer cover 22 and the 1st through hole 321h of displacer body 321a, the cold-producing medium flowed with its rightabout plays heat exchange action through equal-volume regenerative process.Cold-producing medium through equal-volume regenerative process is transferred to while expansion space E is inflated through cooling the isothermal expansion process of extraneous air at cooling end 70.After this, after the cold-producing medium of isothermal expansion process again flow into the inside of regenerator 50 in expansion space E is relatively by the process of compression stroke C relative expansion while compressing, the equal-volume regenerative process that the cold-producing medium through flowing in the opposite direction as the utilization of above-mentioned explanation regenerates.At this moment, cold-producing medium, by being located at the suction inlet of displacer lid 322 and displacer valve 323 via behind the inside of displacer body 321a and displacer lid 322, flow into compression stroke C again by the through hole 322H of displacer lid 322 and the 2nd through hole 321h of displacer body 321a.Certainly, in the process that linear electric machine 40 operates, incite somebody to action successively above-mentioned isotherm compression process, equal-volume regenerative process, isothermal expansion process and equal-volume regenerative process repeatedly, to realize ultralow temperature cooling at cooling end 70.
On the other hand, as above aforementioned, along with the piston 31 and displacer 32 that form movable member 30 carry out rightabout linear reciprocating motion according to law of action and reaction with for the impact of the leaf spring supporting displacer 32, and repeatedly carry out compression stroke C volume-diminished, become large, the cold-producing medium of compression stroke C not only flows to regenerator 50 direction, also flow to its rightabout, play the gas bearing effect of the part lubrication making mutually to slidingly contact.Specifically, flow to the cold-producing medium of regenerator 50 side via heat-dissipating space D from compression stroke C, between displacer outer cover 22 and displacer body 321a, play gas bearing effect; Flowed to the cold-producing medium of accumulator tank 312b by the stream 312a axially arranged at piston plug-in unit 312 from compression stroke C, by flow at the radial through hole 311h of piston only 311 play gas bearing effect between piston only 311 and cylinder 21 while by flowing at the through hole 312h of piston plug-in unit 312 radial direction the effect playing gas bearing between piston plug-in unit 312 and displacer rod 321.
Especially, watch the inner stator 41 of drum and the fixed structure of external stator 42 that form linear electric machine 40, first, with regard to external stator 42, one end of pellet 422 is fixedly welded on framework 11, the other end is then fixedly welded on support 16, makes the outer peripheral face of pellet 422 be fixed on the inner peripheral surface of closed shell in the mode that can contact.As confirmed in the cross section shown in Fig. 3, support 16 is the parts being formed with the drum of flange part 16a, 16b at upper and lower side respectively, the upper surface of upper end flange portion 16a is fixedly welded on below the other end of pellet 422, and lower end flange portion 16b is fixed on the edge of leaf spring S by screw.Therefore, under the state that leaf spring S is fixed on support 16 at its edge, can the end of resiliency supported displacer rod 321, under the state that pellet 422 is supported by framework 11 and support 16 respectively at two ends, be fixed on the inner peripheral surface of package 12 in the mode that can contact.
Then, inner stator 41 is fixed on the outer peripheral face of cylinder 21 by adhesive, and as mentioned above, permanent magnet 43 is arranged on the gap between inner stator 41 and external stator 42.
But, after the outer peripheral face entirety of the cylinder 21 of drum applies the adhesive of epoxy resin etc., when the inner stator 41 of drum being inserted and sticks to the outer peripheral face of cylinder 21, the vacuum forming process that the adhesive that epoxy resin while inner stator 41 is sandwiched in cylinder 21 etc. can occur outwards is extruded or epoxy resin between cylinder and inner stator was implemented before injecting cold-producing medium is by the phenomenon (Outgassing) of leaking, even if therefore use a large amount of adhesives also can reduce adhesion property between cylinder and inner stator, inner stator likely departs from from cylinder.Therefore, in a preferred embodiment of the invention, as shown in Figure 4, at the outer peripheral face of the cylinder 21 of drum, there is multiple adhesion groove 21a, only after these adhere to the adhesive of groove 21a coating epoxy resin etc., make both match if inner stator 41 to be clipped in cylinder 21 outer peripheral face, then inner stator 41 adheres to and is fixed on cylinder 21.Certainly, other adhesives can also be used except epoxy resin.
In more detail, multiple adhesion groove 21a has the ring-type that the outer peripheral face along cylinder 21 is formed in a circumferential direction, forms at the predetermined distance that axially has of cylinder 21.At this moment, the width that preferably should expand multiple adhesion groove 21a in order to improve adhesion expands the face contacted with the inner peripheral surface of inner stator 41, but in order to prevent excessive use adhesive, the cross section adhering to groove 21a should preferably be formed as along with more toward the form that its width of inner side of cylinder 21 is narrower.As an example, preferably, process aluminium bar, be integrated by cylinder 21 make fixed part 20 with displacer outer cover 22 one-tenth, three adhere to groove 21a and can be processed to have predetermined distance with its cross section in " ▽ " shape at the outer peripheral face of cylinder 21.
Therefore, if only apply as adhesives such as epoxy resin at the multiple adhesion groove 21a being located at cylinder 21, then the use amount of adhesive can be reduced.And, be clipped in the outer peripheral face of cylinder 21 if inner stator 41 can hide and match with adhering to groove 21a, the adhesive being contained in multiple adhesion groove 21a then can be prevented to the phenomenon of extruding between inner stator 41 and cylinder 21 or leaking, adhesion property can be improved thus, and then can prevent inner stator 41 from departing from from cylinder 21, thus operating reliability can be guaranteed.
Above, the present invention based on embodiments of the invention and accompanying drawing and by this as example to invention has been detailed description.But scope of the present invention is not limited to above embodiment and accompanying drawing, scope of the present invention only should be confined to content described in claims described later.
Claims (7)
1. a ultra-low temperature refrigerating device, is characterized in that,
Comprise:
Closed shell,
Fixed part, is located at the inside of closed shell, and this fixed part comprises cylinder,
Movable member, the inner side being included in cylinder is axially carried out the piston of linear reciprocating motion and carries out the displacer of linear reciprocating motion along the direction contrary with piston,
Permanent magnet, it is connected with piston, and
Inner stator and external stator, be set to maintain gap with permanent magnet, by mutual electromagnetic force, permanent magnet back and forth driven;
Inner stator is fixed on the outer peripheral face of cylinder in the mode that can contact, and external stator is fixed on the inner peripheral surface of closed shell in the mode that can contact;
Leaf spring, is fixed on closed shell, the end of this leaf spring resiliency supported displacer;
Above-mentioned ultra-low temperature refrigerating device comprises multiple adhesion groove, described multiple adhesion groove is arranged at the outer peripheral face of cylinder, for accommodating the adhesive be fixed on by inner stator on the outer peripheral face of cylinder, described adhesion groove has the ring-type that the outer peripheral face along cylinder is formed in a circumferential direction, and described multiple adhesion groove axially has predetermined distance at cylinder.
2. ultra-low temperature refrigerating device according to claim 1, is characterized in that, above-mentioned leaf spring is fixed on external stator by miscellaneous part.
3. ultra-low temperature refrigerating device according to claim 1, is characterized in that,
Comprise support, one end of this support is secured by bolts in the edge of leaf spring;
The other end of support is fixedly welded on external stator.
4. ultra-low temperature refrigerating device according to any one of claim 1 to 3, is characterized in that,
The package that closed shell comprises drum and the framework be fixedly welded on this package;
External stator is fixedly welded on framework.
5. ultra-low temperature refrigerating device according to claim 1, is characterized in that, inner stator hides adhesion trough and is clipped in the outer peripheral face of cylinder and matches.
6. ultra-low temperature refrigerating device according to claim 1, is characterized in that, each cross section adhering to groove is formed as, and along with the degree of depth of the outer peripheral face apart from cylinder deepens, its width just narrows.
7. ultra-low temperature refrigerating device according to claim 1, is characterized in that, is only coated with epoxy resin in the inside adhering to groove.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2010-0016693 | 2010-02-24 | ||
| KR1020100016693A KR20110097065A (en) | 2010-02-24 | 2010-02-24 | Cooler |
| PCT/KR2010/008576 WO2011105681A1 (en) | 2010-02-24 | 2010-12-02 | Cryogenic refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102713467A CN102713467A (en) | 2012-10-03 |
| CN102713467B true CN102713467B (en) | 2015-07-01 |
Family
ID=44507061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080061617.4A Expired - Fee Related CN102713467B (en) | 2010-02-24 | 2010-12-02 | Cryogenic refrigerator |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20110097065A (en) |
| CN (1) | CN102713467B (en) |
| WO (1) | WO2011105681A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020031160A (en) * | 2018-08-23 | 2020-02-27 | 住友重機械工業株式会社 | Superconducting magnet cooling device and superconducting magnet cooling method |
| CN110081632A (en) * | 2019-04-19 | 2019-08-02 | 东南大学 | A kind of sterlin refrigerator driven using linear motor |
| CN111121334A (en) * | 2019-11-18 | 2020-05-08 | 上海厚酷科技有限公司 | Refrigerating machine power piston component |
| JP2022140969A (en) * | 2021-03-15 | 2022-09-29 | 住友重機械工業株式会社 | cryogenic refrigerator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291197C (en) * | 2004-01-29 | 2006-12-20 | Lg电子株式会社 | Stirling cooler |
| CN100554821C (en) * | 2004-01-29 | 2009-10-28 | Lg电子株式会社 | Stirling cooler and heat exchanger thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07286763A (en) * | 1994-04-15 | 1995-10-31 | Daikin Ind Ltd | Compressor |
| JP3624109B2 (en) * | 1999-01-08 | 2005-03-02 | 東栄電機株式会社 | Compressor for cryogenic refrigerator and armature coil used therefor |
| JP3566647B2 (en) * | 2000-11-01 | 2004-09-15 | シャープ株式会社 | Stirling refrigerator |
| JP2003185281A (en) * | 2001-12-17 | 2003-07-03 | Fuji Electric Co Ltd | Control method for compressor for cryogenic refrigerator, compressor, and power supply device controlling compressor thereof |
-
2010
- 2010-02-24 KR KR1020100016693A patent/KR20110097065A/en not_active Application Discontinuation
- 2010-12-02 CN CN201080061617.4A patent/CN102713467B/en not_active Expired - Fee Related
- 2010-12-02 WO PCT/KR2010/008576 patent/WO2011105681A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291197C (en) * | 2004-01-29 | 2006-12-20 | Lg电子株式会社 | Stirling cooler |
| CN100554821C (en) * | 2004-01-29 | 2009-10-28 | Lg电子株式会社 | Stirling cooler and heat exchanger thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110097065A (en) | 2011-08-31 |
| WO2011105681A1 (en) | 2011-09-01 |
| CN102713467A (en) | 2012-10-03 |
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