CN102829574A - Regenerative type refrigerator - Google Patents
Regenerative type refrigerator Download PDFInfo
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- CN102829574A CN102829574A CN2012101969009A CN201210196900A CN102829574A CN 102829574 A CN102829574 A CN 102829574A CN 2012101969009 A CN2012101969009 A CN 2012101969009A CN 201210196900 A CN201210196900 A CN 201210196900A CN 102829574 A CN102829574 A CN 102829574A
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a regenerative type refrigerator. The regenerative type refrigerator can reduce amount of lubricant which flows from an inner space of a bearing member, reduce amount of foreign matter which mixes into the inner space of the bearing member, and prevent sealing members of the bearing member from deforming. The regenerative type refrigerator includes a cylinder expanding a refrigerant gas; a regenerator accumulating cold thermal energy and being provided inside the cylinder so as to be reciprocate inside the cylinder; a rotary drive portion generating driving force; a rotary member (31a) being rotated by the rotary drive portion; and a bearing member supporting the rotary member (31a) and including an inner wheel (61) and an outer wheel (62) which are arranged to rotate relative to each other around a same rotation shaft (RA), and two sealing members (63-1,63-2) disposed on two sides of the outer wheel and the inner wheel along the rotation shaft (RA), wherein the sealing members are fixed to one of the inner wheel member (61) and the outer wheel member (62), and a gap (G) is formed between the two sealing members (63-1,63-2) and another one of the inner wheel member (61) and the outer wheel member (62).
Description
Technical field
The application advocates the priority based on the Japanese patent application of on June 14th, 2011 application 2011-132506 number.The full content of its application is applied in this specification through reference.
The present invention relates to a kind of cold energy cold-storage that refrigerant gas will be expanded and produce in the cold accumulator type refrigeration machine of regenerator.
Background technology
As the ultra-low temperature refrigerating device that is used to obtain the ultralow temperature about 4K, for example use Ji Fude-McMahon (Gifford-McMahon; GM) refrigeration machine.
The GM refrigeration machine expands in the expansion space and produces cold energy through supplying to the refrigerant gas that is formed on the expansion space in the cylinder and makes supply from the refrigerant gas of for example being made up of helium of compressor.
The at different levels of GM refrigeration machine have cylinder and are arranged at the displacer in the cylinder.Displacer can be arranged in the cylinder with moving back and forth, and between end of displacer and cylinder, forms the expansion space.The inside of displacer is formed with and is used for to the expansion space the supply system refrigerant gas and the refrigerant gas stream of discharging.And, be formed at and contain the cool storage material that is used for contacting and cold energy is carried out cold-storage on the refrigerant gas stream of inside of displacer with refrigerant gas.
This GM refrigeration machine has in order back and forth to drive displacer and for example has motor, crank part, reaches the refrigeration machine (for example, the referenced patent document 1) of dog link.And this GM refrigeration machine has in addition cylinder is switched to the high-pressure side or the low-pressure side of compressor and makes the refrigeration machine of the rotary valve arrangements of its connection.
Patent documentation 1: TOHKEMY 2007-205581 communique
The GM refrigeration machine have the rotating shaft of rotatably mounted motor for example parts of bearings, be arranged at the parts of bearings such as parts of bearings of the valve body of parts of bearings or rotatably mounted rotary valve arrangements between crank part and the dog link.
Parts of bearings has inner ring, outer ring, rotor, reaches retainer.It can be that the center rotates relatively with same rotating shaft that inner ring and outer ring are set to.Between inner ring and the outer ring with the state that remains in retainer along with the rotating shaft be the center circumferentially equally spaced be provided with the rotor that for example has ball shape.
This parts of bearings also has along rotating shaft and is provided with the parts of bearings that is used for enclosing to the both sides, front and back of inner ring and outer ring 2 seal members of lubricant.By inner ring, outer ring, and the inner space that surrounds of 2 seal members enclose lubricant arranged.2 seal members are fixed in the outer ring.
Yet in order to enclose lubricant, seal member contacts with inner ring, therefore by inner ring, outer ring, and the inner space that surrounds of 2 seal members have air-tightness with respect to the outside of parts of bearings.And when through rotary valve arrangements cylinder being switched to the high-pressure side or the low-pressure side of compressor and it is communicated with, the outside pressure of parts of bearings changes significantly.And, along with the change of the outside pressure of parts of bearings, between the inner space of parts of bearings and outside, producing bigger pressure differential, seal member might bear bigger power because of the pressure differential that produces and be out of shape.
And above-mentioned problem does not exist only in the GM refrigeration machine, and for comprising cool storage material and possessing the cold energy cold-storage common problem in the various cold accumulator type refrigeration machines of the regenerator of cool storage material that makes refrigerant gas expand and produce.
Summary of the invention
The present invention puts in view of the above problems and accomplishes; A kind of cold accumulator type refrigeration machine is provided; It can reduce the amount that lubricant flows out from the inner space of parts of bearings, and can reduce the amount that foreign matter is sneaked into the inner space of parts of bearings, and can prevent the seal member distortion of parts of bearings.
In order to solve above-mentioned problem, the present invention is a characteristic to have adopted following member.
Cold accumulator type refrigeration machine of the present invention, it has: the cylinder that is used to make the refrigerant gas expansion; Can be arranged in the said cylinder, inside contains cool storage material and forms with moving back and forth, and will follow the expansion of said refrigerant gas and the cold energy cold-storage that produces in the regenerator of said cool storage material; Generation is used for back and forth driving the rotary driving part of the driving force of said regenerator; By the rotary part of said rotary driving part rotation driving; And parts of bearings, said parts of bearings comprises: being arranged to be counterrotating inner loop component in center and outer coil component with same rotating shaft; And along said rotating shaft be arranged at the both sides, front and back of said inner loop component and said outer coil component respectively and be used for said inner loop component and said outside 2 seal members of inclosure lubricant between the coil component; And said parts of bearings can support said rotary part rotatably, said 2 seal members with arbitrary side's of being fixed in said inner loop component and said outer coil component parts and and the opposing party's parts between form the gap mode be provided with.
And the present invention is made up of resin across said gap and the part relative with said the opposing party's parts in said 2 seal members in above-mentioned cold accumulator type refrigeration machine at least.
And the present invention is in above-mentioned cold accumulator type refrigeration machine, and the width dimensions in said gap is 10～100 μ m.
And the present invention is in above-mentioned cold accumulator type refrigeration machine, and said rotary part is the rotating shaft of said rotary driving part.
And; The present invention is in above-mentioned cold accumulator type refrigeration machine; Said rotary part is a crank part; The rotary driving force that this cold accumulator type refrigeration machine has the said crank part that is driven in rotation converts the dog link that reciprocal driving force comes back and forth to drive said displacer into, and said parts of bearings is set at said dog link.
And; The present invention is in above-mentioned cold accumulator type refrigeration machine; This cold accumulator type refrigeration machine has the refrigerant gas that compression sucks from said cylinder and the compressor of the refrigerant gas after said cylinder spues compression, and said rotary part is for switching to the suction side or the exhaust end of said compressor with said cylinder and making the revolving valve of its connection.
The invention effect:
According to the present invention, can reduce the amount that lubricant flows out from the inner space of parts of bearings, and can reduce the amount that foreign matter is blended into the inner space of parts of bearings, and can prevent the seal member distortion of parts of bearings.
Description of drawings
Fig. 1 is the sectional view of the structure of the related GM refrigeration machine of expression embodiment.
Fig. 2 is the stereogram that amplifies the expression parts of bearings.
Fig. 3 is the exploded perspective view of scotch yoke mechanism.
Fig. 4 is the exploded perspective view of rotary valve arrangements.
Fig. 5 is the sectional view of the structure of expression parts of bearings.
Fig. 6 is the sectional view of structure of the parts of bearings of the related GM refrigeration machine of expression comparative example 1.
Fig. 7 is the sectional view of structure of the parts of bearings of the related GM refrigeration machine of expression comparative example 2.
Among the figure: 1-compressor, 2-cylinder portion, 3-housing department, the 1st grade of cylinder of 11-, the 2nd grade of cylinder of 12-, the 1st grade of displacer of 13-; The 2nd grade of displacer of 14-, 15, the 16-inner space, 17, the 18-cool storage material, 21,22, the 23-expansion space, 30-drive unit, 31-motor; The 31a-rotating shaft, 32-scotch yoke mechanism, 33-crank part, 33a-crank axle, 33b-crank-pin; The 34-dog link, 40-rotary valve arrangements, 41-valve body, 42-valve plate, 60,60A, 60B-parts of bearings; The 61-inner ring, 62-outer ring, 63,63-1,63-2-seal member, 64-rotor, 65-retainer.
The specific embodiment
Then, in conjunction with accompanying drawing the mode that is used for embodiment of the present invention is described.
(embodiment)
With reference to figure 1, illustration GM refrigeration machine is explained the cold accumulator type refrigeration machine that embodiment is related.The GM refrigeration machine has 2 level structures that are fit to obtain the ultralow temperature about number K～20K.
Fig. 1 is the sectional view of the structure of the related GM refrigeration machine of this embodiment of expression.Fig. 2 is the stereogram that amplifies expression parts of bearings 60.Fig. 3 is the exploded perspective view of scotch yoke mechanism 32.Fig. 4 is the exploded perspective view of rotary valve arrangements 40.
The GM refrigeration machine has compressor 1, cylinder portion 2 and housing department 3.
The 1st grade of cylinder 11, the 2nd grade of cylinder 12 are configured to 2 grades up and down.Slide respectively in the 1st grade of cylinder 11 and in the 2nd grade of cylinder 12 and can be provided with the 1st grade of displacer 13, the 2nd grade of displacer 14 with moving back and forth.
Be formed with expansion space 21,22,23 between the 1st grade of displacer 13, the 2nd grade of displacer 14 and the 1st grade of cylinder 11, the 2nd grade of cylinder 12.The inside of the 1st grade of displacer 13 is formed with inner space 15.The inside of the 2nd grade of displacer 14 is formed with inner space 16.Contain cool storage material 17,18 in the inner space 15,16 respectively.
And the mode that the lower, outer perimeter of the 1st grade of cylinder 11, the 2nd grade of cylinder 12 is closed with hot joining respectively is provided with flange 19,20.
In addition, as after state, the 1st grade of displacer 13, the 2nd grade of displacer 14 will follow the expansion of the refrigerant gas in the expansion space 21,22 respectively and the cold energy cold-storage that produces in cool storage material 17,18, be equivalent to the regenerator among the present invention.
As shown in Figure 1, housing department 3 has drive unit 30 and rotary valve arrangements 40.
As shown in Figure 1, the parts of bearings 60 of the front and back both sides of the rotating shaft 31a of motor 31 through being arranged at motor 31 along rotating shaft 31a is by rotatably mounted.As shown in Figure 2, parts of bearings 60 has and is set to can be mutual counterrotating inner ring 61, outer ring 62 and seal member 63.Seal member 63 be fixed in outer ring 62 and and inner ring 61 between form clearance G mode be provided with.Inner ring 61 is fixed in rotating shaft 31a.State after utilizing Fig. 5 to carry out for the detailed structure of other parts of bearings 60.
As shown in Figure 3, scotch yoke mechanism 32 has crank part 33 and dog link 34, and it is to be used for mechanism that the rotary driving force that is produced by motor 31 is converted into reciprocal driving force and back and forth drives the 1st grade of displacer 13 and the 2nd grade of displacer 14.
Crank part 33 is fixed in the rotating shaft 31a of motor 31, and is driven by motor 31 rotations.Crank part 33 becomes in the structure that crank-pin 33b is set from eccentric position, the position of the rotating shaft 31a that is installed on motor 31.Therefore, as if the rotating shaft 31a that crank part 33 is installed on motor 31, then rotating shaft 31a and crank-pin 33b are eccentric state.
Be formed with the arrow X1 in Fig. 3, the window 35a that grows crosswise that the X2 direction is extended on the yoke plate 35, be provided with parts of bearings 60A in the window 35a that grows crosswise.Parts of bearings 60A is set in the window 35a that grows crosswise, can rotate to arrow X1, X2 direction.
Parts of bearings 60A has and is arranged to can be mutual counterrotating inner ring 61, outer ring 62 and seal member 63, becomes the structure identical with aforesaid parts of bearings 60.Seal member 63 be fixed in outer ring 62 and and inner ring 61 between form clearance G mode be provided with.Inner ring 61 is fixed in crank-pin 33b.About the detailed structure of other parts of bearings 60A, then with utilize Fig. 5 after the parts of bearings 60 stated identical.
As if rotation rotating shaft 31a under the state that is fixed in parts of bearings 60A at crank-pin 33b, then crank-pin 33b rotates (eccentric rotation) with the mode of describing circular arc, and arrow Z1, the Z2 direction of dog link 34 in Fig. 3 moves back and forth.At this moment, the parts of bearings 60A arrow X1 in Fig. 3, X2 direction in the window 35a that grows crosswise moves back and forth.
The last lower shaft 36 that is arranged at the bottom of dog link 34 is linked to the 1st grade of displacer 13.Therefore, arrow Z1, the Z2 direction of dog link 34 in Fig. 1 back and forth drives the 1st grade of displacer 13.
In addition, crank part 33 is to mobile being limited of crank-pin 33b axial (Y1, Y2 direction), and dog link 34 also is limited to the moving of axial (Y1, Y2 direction) of crank-pin 33b.
And crank-pin 33b is equivalent to the crank part among the present invention.
As shown in Figure 1, rotary valve arrangements 40 is set between compressor 1 and the 1st grade of cylinder 11 and the 2nd grade of cylinder 12.Rotary valve arrangements 40 is used to control flowing of refrigerant gas.Particularly, rotary valve arrangements 40 switches to the 1st grade of cylinder 11 and the 2nd grade of cylinder 12 the high-pressure side 1b of compressor 1 and makes its connection.At this moment, the refrigerant gas that spues from the high-pressure side 1b of compressor 1 is drawn onto in the 1st grade of cylinder 11, the 2nd grade of cylinder 12.And rotary valve arrangements 40 switches to the 1st grade of cylinder 11 and the 2nd grade of cylinder 12 the low-pressure side 1a of compressor 1 and makes its connection.At this moment, the low-pressure side pipe arrangement 5 that the refrigerant gas of discharging in the 1st grade of cylinder 11, the 2nd grade of cylinder 12 pass the volume inside 4 that is arranged at housing department 3 and the upside that is arranged at housing department 3 and are communicated with space 4, and be inhaled into the low-pressure side 1a of compressor 1.Through repeating this action, rotary valve arrangements 40 switches to the 1st grade of cylinder 11 and the 2nd grade of cylinder 12 the low-pressure side 1a or the high-pressure side 1b of compressor 1 and makes its connection.In addition, the low-pressure side 1a of compressor 1 is equivalent to the suction side among the present invention, and the high-pressure side 1b of compressor 1 is equivalent to the exhaust end among the present invention.
Like Fig. 1 and shown in Figure 4, rotary valve arrangements 40 has valve body 41 and valve plate 42.Valve body 41 and valve plate 42 have smooth face, and the mutual face contact of this smooth face.
Like Fig. 1 and shown in Figure 4, valve plate 42 passes through parts of bearings 60B by rotatably mounted.Parts of bearings 60B has and is arranged to can be mutual counterrotating inner ring 61, outer ring 62 and seal member 63, becomes the structure identical with aforesaid parts of bearings 60.Seal member 63 be fixed in outer ring 62 and and inner ring 61 between form clearance G mode be provided with.Inner ring 61 is fixed in valve plate 42.About the detailed structure of other parts of bearings 60B, then with utilize Fig. 5 after the parts of bearings 60 stated identical.
In addition, for the ease of diagram, represent parts of bearings 60B among Fig. 4 with dotted line.And valve plate 42 is equivalent to the revolving valve among the present invention.
Be penetrated with the refrigerant gas suction hole 44 of the high-pressure side 1b that is connected in compressor 1 in the valve body 41 in the heart.As shown in Figure 4, valve plate side end face 45 be that the concentric circles at center is provided with circular-arc groove 46 with refrigerant gas suction hole 44.Be equipped with an end on the valve body 41 to circular-arc groove 46 openings and the other end passes in lateral opening from the valve body 41 to valve body 41 be used as the spuing through hole 48 in hole 47.And, the hole 47 that spues through passage 49 with reference to figure 1) be communicated in expansion space 23.
The valve body side end face 50 of valve plate 42 is provided with the groove 51 that the mind-set radial direction extends from this.And, with the circular-arc groove 46 same circumference of valve body 41 on the position be equipped with circular-arc hole 53 so that be through to opposition side end face 52 from the valve body side end face 50 of valve plate 42.
By refrigerant gas suction hole 44, groove 51, circular-arc groove 46, and through hole 48 constitute inlet valve.And, by through hole 48, circular-arc groove 46, and circular-arc hole 53 constitute air bleeding valve.
If dog link 34 moves back and forth along Z1, Z2 direction, then the 1st grade of displacer 13, the 2nd grade of displacer 14 are back and forth driven along Z1, Z2 direction, and respectively in the 1st grade of cylinder 11, in the 2nd grade of cylinder 12, between bottom dead centre LP and top dead-centre UP, move back and forth.
When the 1st grade of displacer 13, when the 2nd grade of displacer 14 arrives bottom dead centre LP, exhaust valve closure, and and through hole 48, circular-arc groove 46, and groove 51 between form the refrigerant gas stream.The refrigerant gas of high pressure in housing department 3 passage 49 and begin to flow to expansion space 23.Afterwards, the 1st grade of displacer 13, the 2nd grade of displacer 14 surpass bottom dead centre LP and begin rising, and refrigerant gas passes through cool storage material 17,18 from top to bottom, and is filled in expansion space 21,22 gradually.
And when the 1st grade of displacer 13, when the 2nd grade of displacer 14 arrives top dead-centre UP, inlet valve cuts out, and between through hole 48 and circular-arc groove 46, circular-arc hole 53 formation refrigerant gas stream.In expansion space 21,22; The refrigerant gas of high pressure produces cold energy and the cold energy cooling flange 19,20 through producing through carrying out adiabatic expansion; And pass through from the bottom up while cooling off cool storage material 17,18, and begin to flow to the low-pressure side 1a of compressor 1 through space 4, low-pressure side pipe arrangement 5.At this moment, the cold energy cold-storage of generation is in cool storage material 17,18.
Afterwards, when the 1st grade of displacer 13, when the 2nd grade of displacer 14 arrives bottom dead centre LP, exhaust valve closure and inlet valve are opened and are finished 1 circulation.So, refrigeration machine can produce the cold energy of cold energy and cold-storage generation through the compression that repeats refrigerant gas, the circulation of expansion.
In addition; Also can promptly replace rotary valve arrangements 40 in the outside of housing department 3 at the switching device shifter that compressor 1 side setting is made up of inlet valve and air bleeding valve, and through switching device shifter with inlet valve and air bleeding valve can with the reciprocating motion of displacer synchronously switching way be connected compressor 1 and expansion space 21～23.And, when the 1st grade of displacer 13, when the 2nd grade of displacer 14 moves back and forth, can switch being connected of low-pressure side 1a, high-pressure side 1b of expansion space 21～23 and compressor 1 through switching device shifter, repeat the compression of refrigerant gas, the circulation of expansion thus.At this moment, parts of bearings 60B is not set.
Then, the structure to parts of bearings 60,60A, 60B describes.Below represent parts of bearings 60,60A, 60B that parts of bearings 60 is described, but parts of bearings 60A, 60B also can the be made as structure identical with parts of bearings 60.
Fig. 5 is the sectional view of the structure of expression parts of bearings 60.Also illustrate the rotating shaft 31a that is fixed in inner ring 61 among Fig. 5 in the lump.In addition, among the parts of bearings 60A, crank-pin 33b is fixed in inner ring 61 and replaces rotating shaft 31a.And among the parts of bearings 60B, valve plate 42 is fixed in inner ring 61 and replaces rotating shaft 31a.
As shown in Figure 5, parts of bearings 60 has inner ring 61, outer ring 62, seal member 63, rotor 64, reaches retainer 65.
In addition, inner ring 61 is equivalent to the inner loop component among the present invention, and outer ring 62 is equivalent to the outer coil component among the present invention.
It can be that the center rotates relatively with same rotating shaft RA that inner ring 61 and outer ring 62 are arranged to.The inside of outer ring 62 is assembled with inner ring 61.
Be provided with between the outer peripheral face of the inner peripheral surface of outer ring 62 and inner ring 61 and be used to make outer ring 62 to rotate rotor 64 freely relatively with respect to inner ring 61.Can use for example ball shape (ball bearing), drum (needle bearing) etc. as rotor 64.And, be provided with between outer ring 62 and the inner ring 61 and be used for making along with rotating shaft RA being the constant state in interval between the rotor 64 of circumferential adjacency at the center retainer 65 of maintenance rotor 64 down.
As utilizing Fig. 1 and Fig. 2 aforementioned, inner ring 61 is fixed in rotating shaft 31a.On the other hand, the housing department 3 of GM refrigeration machine is fixed in outer ring 62.Therefore, the parts of bearings 60 rotatably mounted rotating shaft 31a in the GM refrigeration machine that forms by inner ring 61 and outer ring 62.
As inner ring 61, outer ring 62, rotor 64, and the material of retainer 65, for example can utilize the material etc. that martensitic stainless steel such as SUS440C or ferritic stainless steel with excellent formability are implemented material that suitable thermmohardening handles and austenitic stainless steels such as precipitation-hardening class stainless steel such as SUS630 or SUS316 implemented surperficial cure process.
Be formed at and enclose the lubricant that for example has by grease composition in the internal space S between inner ring 61 and the outer ring 62.And, be provided with seal member 63-1,63-2 along rotating shaft RA in the both sides, front and back (left and right sides among Fig. 5) of inner ring 61 and outer ring 62.Seal member 63-1,63-2 are used between inner ring 61 and outer ring 62, enclosing lubricant.
Seal member 63-1,63-2 are fixed in outer ring 62.Seal member 63-1,63-2 along with rotating shaft RA be the center circumferentially for example be fixed in outer ring 62 through bonding, not and outer ring 62 between form the gap.On the other hand, seal member 63-1,63-2 are not fixed in inner ring 61.Seal member 63-1,63-2 be arranged to along with rotating shaft RA be the center circumferentially and inner ring 61 between form clearance G.Thus, can reduce the amount of lubricant space S outflow internally, and can reduce the amount that foreign matter is sneaked into internal space S, and can prevent seal member 63-1,63-2 distortion.
At this, can reduce the amount of lubricant space S outflow internally with reference to 1,2 pairs of comparative examples, and can reduce foreign matter and sneak into the amount of internal space S and can prevent that the action effect of seal member 63-1,63-2 distortion from describing.
Fig. 6 is the sectional view of structure of the parts of bearings 60a of the related GM refrigeration machine of expression comparative example 1.Fig. 7 is the sectional view of structure of the parts of bearings 60b of the related GM refrigeration machine of expression comparative example 2.
In the comparative example 1, on the parts of bearings 60a seal member is not set, replaces seal member but the barricade 63a-1, the 63a-2 that are made up of steel plate are set.Barricade 63a-1,63a-2 and inner ring 61 separate big distance and are provided with, and do not have the function of seal lubrication agent.Therefore, lubricant increases through the amount of the space LG space S outflow internally of barricade 63a-1,63a-2 and inner ring 61.And the foreign matters such as wearing and tearing powder that produce from each sliding part of GM refrigeration machine are blended into the amount increase of internal space S through the space LG between barricade 63a-1,63a-2 and the inner ring 61.
And, in the comparative example 2,, do not form the gap between seal member 63b-1,63b-2 and the inner ring 61 and be in contact with one another though parts of bearings 60b is provided with seal member 63b-1,63b-2.Therefore, by inner ring 61, outer ring 62, and 2 seal member 63b-1, the 63b-2 internal space S of surrounding have air-tightness with respect to the outside of parts of bearings 60b.And, as aforementioned, when cylinder 11,12 being switched to the high-pressure side 1b or the low-pressure side 1a of compressor 1 and it is communicated with, be arranged at the pressure for example 2MPa of 1b and for example changing between the 0.5MPa of low-pressure side 1a of the volume inside 4 of housing department 3 in the high-pressure side.And, along with the change of the pressure in space 4, producing bigger pressure differential between the internal space S of parts of bearings 60b and the outside, seal member 63b-1,63b-2 might bear bigger power because of the pressure differential that produces and be out of shape.And inner ring 61 contacts with seal member 63b-1,63b-2 and slides and might increase the required torque in relative rotation inner ring 61 and outer ring 62.
On the other hand, in this embodiment, seal member 63-1,63-2 be arranged to be fixed in outer ring 62 and and inner ring 61 between form clearance G.Thus, can reduce the amount of lubricant space S outflow internally through the space between seal member 63-1,63-2 and the inner ring 61.And, can reduce the foreign matters such as wearing and tearing powder that produce from each sliding part of GM refrigeration machine are blended into internal space S through the space between seal member 63-1,63-2 and the inner ring 61 amount.And, can prevent that seal member 63-1,63-2 are out of shape because of the change of the pressure in the space 4 of housing department 3 when cylinder 11,12 being switched to the high-pressure side 1b or the low-pressure side 1a of compressor 1 and it is communicated with.And, can prevent that inner ring 61 from contacting with seal member 63-1,63-2 to slide and increase the required torque of rotation inner ring 61 and outer ring relatively 62.
Be 10～100 μ m with rotating shaft RA preferably along the width dimensions GW that is the clearance G radially at center.This is because when width dimensions GW surpasses 100 μ m, might increase the amount of lubricant space S outflow internally or increase the amount that foreign matter is sneaked into internal space S.And; This is because when width dimensions GW less than 10 μ m, the air-tightness of internal space S improves; When cylinder 11,12 being switched to the high-pressure side 1b or the low-pressure side 1a of compressor 1 and it is communicated with, seal member 63-1,63-2 might be out of shape because of the pressure oscillation in the space 4 of housing department 3.Perhaps, this is because when width dimensions GW less than 10 μ m, inner ring 61 and seal member 63-1,63-2 contact slip because of dimensional tolerance etc. is local, might increase the required torque in relative rotation inner ring 61 and outer ring 62.
And, form by resin across clearance G and inner ring 61 relative parts at least among preferred seal member 63-1, the 63-2, more preferably utilize NBR or fluororesin such as ACN synthetic rubber such as (acrylic rubbers), PTFE etc. as resin.Thus; Even if when inner ring 61 slides because of parts such as dimensional tolerance contact with seal member 63-1,63-2; Also can reduce the recruitment of torque, therefore can set width dimensions GW less, and can further reduce the discharge of lubricant and the mixed volume of foreign matter.And, even if at inner ring 61 and seal member 63-1,63-2 is local when contact slip, also can prevent inner ring 61 damages such as grade.Its result can prolong life-span of parts of bearings 60.
More than, preferred implementation of the present invention is recorded and narrated, but the present invention is not limited to such specific implementations, in the aim scope of in claims, putting down in writing of the present invention, can carry out various distortion and change.
For example, in this embodiment, to seal member 63-1,63-2 be arranged to be fixed in outer ring 62 and and inner ring 61 between form clearance G example be illustrated.But, seal member 63-1,63-2 also can be arranged to be fixed in inner ring 61 and and outer ring 62 between form clearance G.That is, seal member 63-1,63-2 can be arranged to be fixed in inner ring 61 and outer ring 62 arbitrary side parts and and the opposing party's parts between form clearance G.
And, in any one or 2 of 3 parts of bearings 60,60A, 60B, seal member 63-1,63-2 can be arranged to be fixed in inner ring 61 and outer ring 62 arbitrary side parts and and the opposing party's parts between form clearance G.
Claims (6)
1. cold accumulator type refrigeration machine, it has:
Cylinder is used to make refrigerant gas to expand;
Regenerator can be arranged in the said cylinder with moving back and forth, and inside contains cool storage material and forms, and will follow the expansion of said refrigerant gas and the cold energy cold-storage that produces in said cool storage material;
Rotary driving part produces the driving force that is used for back and forth driving said regenerator;
Rotary part is driven by said rotary driving part rotation; And
Parts of bearings, this parts of bearings comprises: being arranged to be counterrotating inner loop component in center and outer coil component with same rotating shaft; And along said rotating shaft be arranged at the both sides, front and back of said inner loop component and said outer coil component respectively and be used for said inner loop component and said outside 2 seal members of inclosure lubricant between the coil component; And this parts of bearings can support said rotary part rotatably
Said 2 seal members with arbitrary side's of being fixed in said inner loop component and said outer coil component parts and and the opposing party's parts between form the gap mode be provided with.
2. cold accumulator type refrigeration machine as claimed in claim 1, wherein,
At least form by resin across said gap and the part relative in said 2 seal members with said the opposing party's parts.
3. according to claim 1 or claim 2 cold accumulator type refrigeration machine, wherein,
The width dimensions in said gap is 10～100 μ m.
4. like each described cold accumulator type refrigeration machine in the claim 1 to 3, wherein,
Said rotary part is the rotating shaft of said rotary driving part.
5. like each described cold accumulator type refrigeration machine in the claim 1 to 3, wherein,
Said rotary part is a crank part,
The rotary driving force that this cold accumulator type refrigeration machine has the said crank part that is driven in rotation converts the dog link that reciprocal driving force comes back and forth to drive said displacer into,
Said parts of bearings is set on the said dog link.
6. like each described cold accumulator type refrigeration machine in the claim 1 to 3, wherein,
This cold accumulator type refrigeration machine has compression from the refrigerant gas of said cylinder suction and the compressor of the refrigerant gas after said cylinder spues compression,
Said rotary part is for switching to the suction side or the exhaust end of said compressor with said cylinder and making the revolving valve of its connection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011132506A JP2013002687A (en) | 2011-06-14 | 2011-06-14 | Cold storage refrigerator |
| JP132506/2011 | 2011-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102829574A true CN102829574A (en) | 2012-12-19 |
Family
ID=47332796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101969009A Pending CN102829574A (en) | 2011-06-14 | 2012-06-14 | Regenerative type refrigerator |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120317994A1 (en) |
| JP (1) | JP2013002687A (en) |
| KR (1) | KR20120138669A (en) |
| CN (1) | CN102829574A (en) |
| TW (1) | TWI473956B (en) |
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| CN103940136A (en) * | 2013-01-21 | 2014-07-23 | 住友重机械工业株式会社 | Cryogenic refrigerator |
| CN103968591A (en) * | 2013-01-30 | 2014-08-06 | 住友重机械工业株式会社 | Cryogenic refrigerator |
| CN104121717A (en) * | 2013-04-24 | 2014-10-29 | 住友重机械工业株式会社 | Cryogenic refrigerator |
| CN104422192A (en) * | 2013-09-10 | 2015-03-18 | 住友重机械工业株式会社 | Cryogenic refrigerator |
| CN104713263A (en) * | 2013-12-16 | 2015-06-17 | 住友重机械工业株式会社 | Regenerative Refrigerator |
| CN110242547A (en) * | 2018-03-07 | 2019-09-17 | 阿耐思特岩田株式会社 | Reciprocating compressor |
| CN112119270A (en) * | 2018-05-23 | 2020-12-22 | 住友重机械工业株式会社 | Rotary valve for cryogenic refrigerator and cryogenic refrigerator |
| CN113323873A (en) * | 2021-07-05 | 2021-08-31 | 漯河职业技术学院 | Electric compressor and control method thereof |
| CN114585867A (en) * | 2019-10-15 | 2022-06-03 | 住友重机械工业株式会社 | Cryogenic refrigerator, diagnostic device for cryogenic refrigerator, and diagnostic method |
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| JP6214498B2 (en) | 2014-09-02 | 2017-10-18 | 住友重機械工業株式会社 | Cryogenic refrigerator |
| JP6305287B2 (en) * | 2014-09-11 | 2018-04-04 | 住友重機械工業株式会社 | Cryogenic refrigerator |
| WO2016201348A1 (en) * | 2015-06-10 | 2016-12-15 | Reflexion Medical, Inc. | High bandwidth binary multi-leaf collimator design |
| JP6767291B2 (en) * | 2017-03-13 | 2020-10-14 | 住友重機械工業株式会社 | Cryogenic freezer |
| JP7464398B2 (en) * | 2020-02-13 | 2024-04-09 | 住友重機械工業株式会社 | Cryogenic refrigerators and sealing parts |
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| CN103940136A (en) * | 2013-01-21 | 2014-07-23 | 住友重机械工业株式会社 | Cryogenic refrigerator |
| CN103940136B (en) * | 2013-01-21 | 2016-07-06 | 住友重机械工业株式会社 | Ultra-low temperature refrigerating device |
| CN103968591A (en) * | 2013-01-30 | 2014-08-06 | 住友重机械工业株式会社 | Cryogenic refrigerator |
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| CN114585867A (en) * | 2019-10-15 | 2022-06-03 | 住友重机械工业株式会社 | Cryogenic refrigerator, diagnostic device for cryogenic refrigerator, and diagnostic method |
| CN114585867B (en) * | 2019-10-15 | 2023-08-15 | 住友重机械工业株式会社 | Ultralow temperature refrigerator, diagnosis device and diagnosis method for ultralow temperature refrigerator |
| CN113323873A (en) * | 2021-07-05 | 2021-08-31 | 漯河职业技术学院 | Electric compressor and control method thereof |
| CN113323873B (en) * | 2021-07-05 | 2022-07-22 | 漯河职业技术学院 | Electric compressor and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013002687A (en) | 2013-01-07 |
| KR20120138669A (en) | 2012-12-26 |
| TWI473956B (en) | 2015-02-21 |
| US20120317994A1 (en) | 2012-12-20 |
| TW201314150A (en) | 2013-04-01 |
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Application publication date: 20121219 |