CN203771769U - Structure of single linear compressor for driving U-type and coaxial pulse tube cryocoolers - Google Patents
Structure of single linear compressor for driving U-type and coaxial pulse tube cryocoolers Download PDFInfo
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- CN203771769U CN203771769U CN201420028431.4U CN201420028431U CN203771769U CN 203771769 U CN203771769 U CN 203771769U CN 201420028431 U CN201420028431 U CN 201420028431U CN 203771769 U CN203771769 U CN 203771769U
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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
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1406—Pulse-tube cycles with pulse tube in co-axial or concentric geometrical arrangements
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Abstract
The utility model discloses a structure of a single linear compressor for driving U-type and coaxial pulse tube cryocoolers The structure is composed of a main base, an auxiliary base, a double-pass type compressor base, an oppositely-arranged type linear compressor main component, a compressor left outer shell, a compressor right outer shell, a compressor upper connecting tube, an upper main heat exchanger, an upper auxiliary heat exchanger, an upper regenerator, an upper pulse tube, an upper cold end heat exchanger, an upper vacuum cover, an upper pulse tube connecting pipe, an upper inertial tube, an upper air reservoir, an upper protecting cover, a compressor lower connecting pipe, a lower main heat exchanger, a lower auxiliary heat exchanger, a lower regenerator, a lower pulse tube, a lower cold end heat exchanger, a lower vacuum cover, a lower pulse tube connecting pipe, a lower inertial tube, a lower air reservoir and a lower protecting cover. The structural characteristics of a U-type and coaxial pulse tube refrigerating machine are fully utilized, the aim of the single linear compressor for driving the U-type and coaxial pulse tube cryocoolers at the same time can be achieved, and the structure has the great significance in functionization of the pulse tube refrigerator in the special fields of aerospace and the like.
Description
Technical field
This patent belongs to refrigeration and cryogenic engineering field, relates to pulse tube refrigerating machine, and particularly a kind of separate unit linear compressor drives U-shaped and structure coaxial pulse-tube cold finger simultaneously.
Background technology
Pulse tube refrigerating machine is to regenerating type low-temperature refrigerator significant innovation, and it has cancelled the cold junction displacer being widely used in conventional regenerating type low-temperature refrigerator (as Stirling and G-M refrigeration machine), has realized the low vibration of cold junction, low interference and without wearing and tearing; And through the important improvement on structure optimization and pm mode, at typical warm area, its actual efficiency has also reached the peak of regenerating type low-temperature refrigerator.These remarkable advantages make pulse tube refrigerating machine become a big hot topic of Cryo Refrigerator research over nearly 30 years, at aspects such as Aero-Space, low-temperature electronics, superconduction industry and cryosurgery industry, all obtain a wide range of applications.
The drive compression machine of pulse tube refrigerating machine is divided into two kinds, linear compressor and G-M type compressor.The pulse tube refrigerating machine of the applications such as space flight and military affairs, weight and volume is had to very strict restriction, for the pulse tube refrigerating machine of this part application, generally all adopt the linear compressor of lightweight high frequency running, the operating frequency of linear compressor more than 30Hz, and for the frequency of the comparatively heavy G-M type compressor of Ground Application generally at 1～2Hz.Thereby, according to the difference of drive compression machine, again pulse tube refrigerating machine is divided for to the high frequency pulse tube cooler that driven by linear compressor and by two kinds, the low frequency pulse tube system refrigeration machine of G-M type driven compressor.The high frequency pulse tube cooler being driven by linear compressor, due to compact conformation, the outstanding advantages such as lightweight, volume is little, efficiency is high, running is reliable, life expectancy is long, becomes the Regeneration variety of space flight regenerating type low-temperature refrigerator of new generation just day by day.
According to the correlation of pulse tube and regenerator, pulse tube refrigerating machine can be divided into again following three kinds of exemplary configurations modes: U-shaped, coaxial type and linear pattern.Three class pulse tube refrigerating machines are all mainly comprised of compressor, connecting leg, vascular cold finger (comprising regenerator hot end heat exchanger, regenerator, cool end heat exchanger, pulse tube, pulse tube hot end heat exchanger and phase modulating mechanism).In linear pattern layout, pulse tube and regenerator are in a straight line; U-shaped layout refers to that pulse tube and regenerator are arranged in parallel, and the cold junction of pulse tube and regenerator is connected by pipeline; Coaxial type is arranged and is referred to that pulse tube and regenerator are arranged together with one heart.Pm mode is most important for pulse tube refrigerating machine, the maximum feature that pulse tube refrigerating machine is different from conventional regenerating type low-temperature refrigerator (as Stirling or G-M refrigeration machine) is to have cancelled the displacer of cold junction for control phase, and in hot junction, has arranged corresponding phase modulating mechanism.Wherein, inertia tube adds the pm mode of air reservoir because phase modulation wide ranges, the outstanding advantages such as simple in structure, stable and reliable for performance become preferred manner at special dimensions such as Aero-Space and Military Application.
In tradition, pulse tube refrigerating machine all adopts single compressor to drive the arrangement of separate unit pulse tube cold finger.Fig. 1 has shown that separate unit linear compressor drives the schematic diagram of the inertia cast pulse tube refrigerating machine of three kinds of exemplary configurations forms, wherein: (1) is U-shaped vascular cold finger for separate unit linear compressor drives, (2), for separate unit linear compressor drives co-axial pulse tube cold finger, (3) are separate unit linear compressor driving linear pattern vascular cold finger.
In concrete application practice, usually can run into the situation of refrigerating capacity need to be provided at two different warm areas.As in space remote sensing telemetry system, same system may have been used shortwave and medium-wave infrared detector simultaneously, or medium wave and Long Wave Infrared Probe, and the operation temperature area of different detectors is different; Or sometimes need cooled detector and optical system simultaneously, the operating temperature of detector and optical system is not identical yet.At this moment, conventional method is to adopt two Cryo Refrigerators in different temperature spot refrigeration, and system is loose, and weight, volume, power consumption all increase greatly, in some special application fields (as Aero-Space and Military Application), bring very big inconvenience, sometimes even unacceptable.In Aero-Space and the military field of waiting of emphasizing compact conformation and application reliability, seeking has become a great problem in the urgent need to address in application practice gradually with the scheme of two vascular cold fingers of separate unit linear compressor driving.
Summary of the invention
In view of this, this patent proposes a kind of separate unit linear compressor and drives U-shaped and structure coaxial pulse-tube cold finger simultaneously.
The separate unit linear compressor of inventing drives the structure of U-shaped and coaxial pulse-tube cold finger by main basal base 1 simultaneously, inferior pedestal 2, bilateral type compressor pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor, compressor right casing 6, on compressor, connecting leg 7, upper main heat exchanger 8, last time, heat exchanger 9, upper regenerator 10, upper pulse tube 11, upper cool end heat exchanger 12, upper vacuum (-tight) housing 13, upper pulse tube connecting leg 14, upper inertia tube 15, upper air reservoir 16, upper protective cover 17, and connecting leg 7 under compressor ', lower main heat exchanger 8 ', next heat exchanger 9 ', lower regenerator 10 ', lower pulse tube 11 ', lower cool end heat exchanger 12 ', lower vacuum (-tight) housing 13 ', lower pulse tube connecting leg 14 ', lower inertia tube 15 ', lower air reservoir 16 ', lower protective cover 17 ' composition, it is characterized in that, main basal base 1 is as total supporting base of total, the lower end of inferior pedestal 2 processes time pedestal lower surface 18, and is supported on main basal base upper surface 19, and the upper end of inferior pedestal 2 processes supports cambered surface 20, supports the shell surface downside that cambered surface 20 is supported in bilateral type compressor pedestal 3, bilateral type compressor pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor and compressor right casing 6 form an opposed type linear compressor, this compressor adopts double-piston opposed formula structure, and left and right two parts are along central axis 36 full symmetrics, in the both sides up and down of bilateral type compressor pedestal 3 along central authorities vertically open respectively venthole 22 and compressor lower production well 22 on compressor ', by venthole on compressor 22, realize the connection between connecting leg 7 on the compression chamber 23 of opposed type linear compressor and compressor, connecting leg 7 under the compression chamber 23 by compressor lower production well 22 ' realize opposed type linear compressor and compressor ' between connection, in the both sides of bilateral type compressor pedestal 3, process respectively compressor upper support platform 24 and compressor lower support platform 24 ', compressor upper support platform 24 contact to connect by the upper main heat exchangers 8 of 25 pairs, upper support platform plane and supports, compressor lower support platform 24 ' by lower support platform plane 25 ' to lower main heat exchanger 8 ' contact connection support, compressor upper support platform 24 and compressor lower support platform 24 ' on process respectively upper support platform through hole 21 and lower support platform through hole 21 ', side, pedestal lower-left 26 seal weldings of the openend of the left outside shell 5 of compressor and bilateral type compressor pedestal 3, pedestal lower right sides 27 seal weldings of the openend of compressor right casing 6 and bilateral type compressor pedestal 3, last time heat exchanger 9 insert with one heart upper main heat exchanger 8 within and be welded to connect, the lower main heat exchanger 8 of next heat exchanger 9 ' insert with one heart ' within and be welded to connect, on compressor, one end of connecting leg 7 is connected with venthole on compressor 22, the other end with last time heat exchanger 8 be connected, and be communicated with upper regenerator 10 by the upper regenerator end infundibulate duct 28 in last time heat exchanger 8, connecting leg 7 under compressor ' one end and compressor lower production well 22 ' be connected, the other end and lower main heat exchanger 8 ' be connected, and by lower main heat exchanger 8 ' with next heat exchanger 9 ' between formation lower annular gap 28 ' with lower regenerator 10 ' be communicated with, upper regenerator 10 and upper pulse tube 11 are arranged in parallel, one end of upper regenerator 10 and upper pulse tube 11 is inserted abreast upper regenerator end boss 39 and the upper pulse pipe end boss 40 of cool end heat exchanger 12 and is welded to connect, and the other end inserts abreast in heat exchanger 9 last time and is welded to connect, lower pulse tube 11 ' regenerator 10 under inserting with one heart ' among, lower regenerator 10 ' and lower pulse tube 11 ' one end insert with one heart lower cool end heat exchanger 12 ' within, lower regenerator 10 ' and lower pulse tube 11 ' the other end insert respectively lower main heat exchanger 8 ' and next heat exchanger 9 ' within, one end of upper pulse tube connecting leg 14 with last time heat exchanger 9 be connected, and be communicated with upper pulse tube 11 by the upper pulse pipe end funnel-shaped hole road 29 in last time heat exchanger 9, the other end of upper pulse tube connecting leg 14 is drawn through the upper right through slot 40 of upper main heat exchanger 8 bottoms, and then through upper support platform through hole 21, be communicated with inertia tube import 30, lower pulse tube connecting leg 14 ' one end and next heat exchanger 9 ' be connected, and the lower infundibulate duct 29 by next heat exchanger 9 ' interior ' with lower pulse tube 11 ' be communicated with, lower pulse tube connecting leg 14 ' the other end through lower support platform through hole 21 ', then with lower inertia tube import 30 ' be communicated with, upper inertia tube 15 closely coils on compressor right casing 6, and upper inertia tube outlet 31 is connected with upper air reservoir air inlet 32, lower inertia tube 15 ' closely coil on the left outside shell 5 of compressor, lower inertia tube outlet 31 ' with lower air reservoir air inlet 32 ' be connected, upper air reservoir 16 is the hollow sealed volume that an interior ring diameter is slightly larger than compressor right casing 6 external diameters, and upper air reservoir inner ring surface 33 is held on compressor right casing 6, lower air reservoir 16 is the hollow sealed volume that an interior ring diameter is slightly larger than left outside shell 5 external diameters of compressor, lower air reservoir inner ring surface 33 ' be held on the left outside shell 5 of compressor, working gas is by bilateral type compressor pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor, compressor right casing 6, on compressor, connecting leg 7, upper main heat exchanger 8, last time, heat exchanger 9, upper regenerator 10, upper pulse tube 11, upper cool end heat exchanger 12, upper pulse tube connecting leg 14, upper inertia tube 15, connecting leg 7 under air reservoir 16 and compressor ', lower main heat exchanger 8 ', next heat exchanger 9 ', lower regenerator 10 ', lower pulse tube 11 ', lower cool end heat exchanger 12 ', lower pulse tube connecting leg 14 ', lower inertia tube 15 ', reciprocating vibration in the confined space of lower air reservoir 16 ' composition, upper protective cover 17 is the case of one end sealing, and side, upper right 34 seal weldings of its openend and bilateral type compressor pedestal 3, cover in upper inertia tube 15, upper air reservoir 16 and compressor right casing 6 wherein, lower protective cover 17 ' be the case of one end sealing, side, the upper left 34 ' seal welding of its openend and bilateral type compressor pedestal 3, by lower inertia tube 15 ', lower air reservoir 16 ' and the left outside shell 5 of compressor cover in wherein, thereby jointly form a kind of separate unit linear compressor and drive U-shaped and structure coaxial pulse-tube cold finger simultaneously.
Below in conjunction with accompanying drawing, to invented separate unit linear compressor, drive the manufacture method of the structure of U-shaped and coaxial pulse-tube cold finger to be described as follows simultaneously:
The section plan of the structure of Fig. 2 and coaxial pulse-tube cold finger U-shaped for invented separate unit linear compressor drives simultaneously; Fig. 3 is the generalized section that main basal base 1 and time pedestal 2 support opposed type linear compressor; Fig. 4 is the schematic perspective view of inferior pedestal 2; Fig. 5 (1) and Fig. 5 (2) are respectively section plan and the schematic perspective view of bilateral type compressor pedestal 3; Fig. 6 (1) and Fig. 6 (2) be respectively main heat exchanger 8 and lower main heat exchanger 8 ' schematic perspective view; Fig. 7 (1) be upper main heat exchanger 8 and last time heat exchanger 9 assembled sectional view, Fig. 7 (2) be lower main heat exchanger 8 ' and next heat exchanger 9 ' assembled sectional view; Fig. 8 (1) and Fig. 8 (2) are respectively schematic perspective view and the section plan of cool end heat exchanger 12; Fig. 9 (1) be lower cool end heat exchanger 12 ' schematic perspective view; Figure 10 (1) is the assembled sectional view of upper regenerator 10, upper pulse tube 11 and upper cool end heat exchanger 12, Figure 10 (2) be lower regenerator 10 ', lower pulse tube 11 ' and lower cool end heat exchanger 12 ' assembled sectional view; Figure 11 (1) and Figure 11 (2) be respectively vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ' schematic perspective view; Figure 12 (1) and Figure 12 (2) be respectively inertia tube 15 and lower inertia tube 15 ' schematic perspective view; Figure 13 (1) and Figure 13 (2) be respectively air reservoir 16 and lower air reservoir 16 ' schematic perspective view; The high thermal conductivity metal plate that main basal base 1 is 20～40mm by thickness is made, the flatness of dull and stereotyped upper and lower surface is all used fine turning lathe, milling machine and grinding machine processing to ensure between 1.0～5.0 μ m, dull and stereotyped horizontal positioned, carries out vertical support to total; Inferior pedestal 2 is made by high-thermal conductive metal material, the flatness of inferior pedestal lower surface 18 is used fine turning lathe, milling machine and grinding machine processing to ensure between 1.0～5.0 μ m, support the method processing that cambered surface 20 is used the silk thread cutting of being careful, match with the shell surface downside cambered surface of bilateral type compressor pedestal 3; Bilateral type compressor pedestal 3 adopts high thermal conductivity and high-intensity metal material to make, its both sides adopt precise numerical control machine process respectively brace table 24 and compressor lower support platform 24 on compressor ', the outer surface of the two use respectively fine turning lathe, milling machine and grinding machine process brace table plane 25 and lower support platform plane 25 ', brace table 24 and compressor lower support platform 24 on compressor ' on use respectively drilling machine process brace table through hole 21 and lower support platform through hole 21 '; The left outside shell 5 of compressor and compressor right casing 6 all adopt high-intensity metal material to make, wherein the side, pedestal lower-left 26 of the openend of the left outside shell 5 of compressor and bilateral type compressor pedestal 3 adopts electron beam technology seal welding, and the pedestal lower right sides 27 of the openend of compressor right casing 6 and bilateral type compressor pedestal 3 adopts electron beam technology seal welding; On compressor, connecting leg 7 adopts the pure copper tube of internal diameter 3.0～8.0mm to be made, and on its one end and compressor, venthole 22 adopts Vacuum Soldering Technology to be welded to connect, and the other end is drawn by the hollow structure of upper main heat exchanger 8 bottoms,And adopt Vacuum Soldering Technology to be welded on heat exchanger 9 last time, be communicated with the upper regenerator end infundibulate duct 28 in last time heat exchanger 9, the pure copper tube of connecting leg 7 under compressor ' employing internal diameter 3.0～8.0mm is made, its one end and compressor lower production well 22 ' employing Vacuum Soldering Technology is welded to connect, the other end is from the bottom left through slot 35 of lower main heat exchanger 8 ' bottom ' draw, and adopt Vacuum Soldering Technology to be welded on lower main heat exchanger 8 ' upper, with lower main heat exchanger 8 ' and next heat exchanger 9 ' between the lower annular gap 28 ' be communicated with that forms, upper pulse tube 11 and lower pulse tube 11 ' all adopt the stainless steel of low heat conductivity or titanium alloy material to make, adopt slow wire feeding wire cutting method to process, inwall grinding and polishing, ensures that inwall fineness is better than 0.5 μ m, upper regenerator 10 is by upper cold accumulator 37 and be filled in cold-storage filler 38 on the disc of upper cold accumulator 37 inside and form, lower regenerator 10 ' by lower cold accumulator 37 ' and be filled in cold-storage filler 38 under the annular of lower cold accumulator 37 ' inside ' form, wherein going up stainless steel or the titanium alloy material of cold accumulator 37 and lower cold accumulator 37 ' all adopt low heat conductivity makes, adopt slow wire feeding wire cutting method to process, inwall grinding and polishing, all ensure that inwall fineness is better than 2.0 μ m, upper cold-storage filler 38 and lower cold-storage filler 38 ' formed by silk screen or the tight filling of sphere of high specific heat, upper main heat exchanger 8, last time heat exchanger 9 and lower main heat exchanger 8 ', next heat exchanger 9 ' all adopt high-purity oxygenless copper material of high thermal conductivity to make, the inner slow wire feeding line cutting technologies that use of upper main heat exchanger 8 are processed into a hollow structure, and last time, heat exchanger 9 inserted in upper main heat exchanger 8 with one heart, and the joint face between the two uses Vacuum Soldering Technology welding, fitting closely with upper brace table plane 25 in upper main heat exchanger lower surface 44, uses bolt to connect between the two, within upper main heat exchanger 8 is inserted respectively with one heart in the lower end of upper regenerator 10 and upper pulse tube 11, insertion depth all remains between 2.0～4.0mm, and the contact-making surface that inserts position all uses Vacuum Soldering Technology welding, use wire cutting method to process upper right through slot 46 in the right both sides of upper main heat exchanger 8, in heat exchanger 9, respectively used precision machine tool to process regenerator end infundibulate duct 28 and upper pulse pipe end funnel-shaped hole road 29 with upper regenerator 10 concentric position vertical with upper pulse tube 11 in last time, and use honing machine to grind the two inwall, make its surface smoothness all higher than 0.01mm, the funnel opening internal diameter in upper regenerator end infundibulate duct 28 is identical with the external diameter of upper regenerator 10, realize being communicated with between upper compressor connecting leg 7 and upper regenerator 10 by upper regenerator end infundibulate duct 28, the funnel opening internal diameter in upper pulse pipe end funnel-shaped hole road 29 is identical with the external diameter of upper pulse tube 11, realizes being communicated with between upper pulse tube connecting leg 14 and upper pulse tube 11 by upper pulse pipe end funnel-shaped hole road 29, lower main heat exchanger 8 ' inside is used slow wire feeding line cutting technology to be processed into a hollow structure, next heat exchanger 9 ' main heat exchanger 8 under inserting with one heart ' in, the joint face between the two uses Vacuum Soldering Technology welding,Next time heat exchanger 9 ' interior use precise numerical control machine process lower infundibulate duct 29 ', lower infundibulate duct 29 ' funnel opening internal diameter and lower pulse tube 11 ' external diameter identical, lower pulse tube 11 ' by lower infundibulate duct 29 ' realization and lower pulse tube connecting leg 14 ' between be communicated with, lower main heat exchanger 8 ' and next heat exchanger 9 ' between form lower annular gap 28 ', connecting leg 7 under compressor ' by lower annular gap 28 ' with lower regenerator 10 ' be communicated with, lower main heat exchanger lower surface 44 ' with compressor lower support platform 24 ' the laminating of lower support platform plane 25 ' closely, between the two, use bolt to connect, lower regenerator 10 ' and lower pulse tube 11 ' one end insert with one heart respectively lower main heat exchanger 8 ' and next heat exchanger 9 ' within, insertion depth all remains between 2.0～4.0mm, the contact-making surface that inserts position all uses Vacuum Soldering Technology welding, lower main heat exchanger 8 ' the left and right sides use respectively wire cutting method process bottom left through slot 35 ' and bottom right through slot 39 ', upper cool end heat exchanger 12 and lower cool end heat exchanger 12 ' all adopt the oxygenless copper material of high heat conduction to make, an end face of upper cool end heat exchanger 12 processes regenerator end boss 39 and upper pulse pipe end boss 40, another end face uses fine turning lathe, milling machine and grinding machine to process the upper cold platform 42 of a flatness between 2.0～3.0 μ m, upper regenerator end boss 39 and upper pulse pipe end boss 40 insert respectively in regenerator 10 and upper pulse tube 11 tube wall separately, insertion depth all remains between 2.0～4.0mm, contact-making surface all adopts Vacuum Soldering Technology welding, and on interior the opening of upper cool end heat exchanger 12, U-shaped hole 41 is communicated with regenerator 10 and upper pulse tube 11, lower cool end heat exchanger 12 ' inside use slow wire feeding line cutting technology evenly to cut out slit, inner slit walls formation low groove 40 ', welding anchor ring 41 under forming on slit ', lower welding anchor ring 41 ' on use fine turning lathe, milling machine and grinding machine process the lower cold platform 42 of a flatness between 1.0～2.0 μ m ', lower regenerator 10 ' and lower pulse tube 11 ' cool end heat exchanger 12 under inserting with one heart ' within, wherein descend regenerator 10 ' tube wall and lower welding anchor ring 41 ' contact-making surface adopt Vacuum Soldering Technology welding, lower pulse tube 11 ' insertion low groove 40 ' in, insertion depth remains between 2.0～3.0mm, lower pulse tube 11 ' outer wall and low groove 40 ' inwall contact-making surface adopt the method close-fitting of interference fit, the magnitude of interference be lower pulse tube 11 ' external diameter exceed low groove 40 ' internal diameter between 0.03～0.05mm, upper vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ' all adopt stainless steel material to use precise numerical control machine to process, one end sealing of upper vacuum (-tight) housing 13, its upper open end anchor ring 43 is connected by bolt and the seal with elastometic washer of " O " type with upper main heat exchanger upper surface 45, lower vacuum (-tight) housing 13 ' one end sealing, its lower open end anchor ring 43 ' with lower main heat exchanger upper surface 45 ' be connected by bolt and the seal with elastometic washer of " O " typeUpper vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ' inside are all used vacuum molecular pump to keep being better than 3.0 × 10
-5The vacuum of Pa; Upper pulse tube connecting leg 14 and lower pulse tube connecting leg 14 ' all adopt the pure copper tube of internal diameter 1.0～10.0mm to be made, one end of upper pulse tube connecting leg 14 and next heat exchanger 9 use Vacuum Soldering Technology to weld together, the other end of upper pulse tube connecting leg 14 is drawn through the upper right through slot 46 of upper main heat exchanger 8, and then through upper brace table through hole 21, use Vacuum Soldering Technology and upper inertia tube import 30 to weld together; Lower pulse tube connecting leg 14 ' one end and next heat exchanger 9 ' use Vacuum Soldering Technology weld together, lower pulse tube connecting leg 14 ' the other end through the bottom right through slot 39 of lower main heat exchanger 8 ' bottom ' draw, then through lower support platform through hole 21 ', use Vacuum Soldering Technology and lower inertia tube import 30 ' weld together; Upper inertia tube 15 and lower inertia tube 15 ' all adopt single hop or multistage long and thin metal copper pipe to make, upper inertia tube 15 closely coils on compressor right casing 6, and upper inertia tube outlet 31 is used Vacuum Soldering Technology to weld together with upper air reservoir air inlet 32; Lower inertia tube 15 ' closely coil on the left outside shell 5 of compressor, lower inertia tube outlet 31 ' weld together with lower air reservoir air inlet 32 ' use Vacuum Soldering Technology; Upper air reservoir 16 and lower air reservoir 16 ' all adopt the flexible metal material of high thermal conductivity to make, upper air reservoir 16 use precise numerical control machine and Vacuum Soldering Technology to be made into an inner ring slightly larger in diameter in compressor right casing 6 external diameters and outside ring diameter be slightly less than the hollow sealed volume of upper protective cover 17 internal diameters, the inner ring of upper air reservoir 16 is closely buckled on compressor right casing 6; Lower air reservoir 16 ' use precise numerical control machine and Vacuum Soldering Technology be made into an inner ring slightly larger in diameter in the left outside shell 6 ' external diameter of compressor and outside ring diameter be slightly less than the hollow sealed volume of lower protective cover 17 ' internal diameter, lower air reservoir 16 ' inner ring be closely buckled on the left outside shell 5 of compressor; Upper protective cover 17 and lower protective cover 17 ' all adopt the metal material of high thermal conductivity to make, use respectively precise numerical control machine to be made into the housing of one end sealing, wherein go up the openend of protective cover 17 and the side, upper right 34 of bilateral type compressor pedestal 3 adopts electron beam technology seal welding, upper inertia tube 15, upper air reservoir 16 and compressor right casing 6 are covered in wherein; Lower protective cover 17 ' openend and side, upper left 34 ' employing electron beam technology seal welding of bilateral type compressor pedestal 3, by lower inertia tube 15 ', lower air reservoir 16 ' and the left outside shell 5 of compressor cover in wherein.
The separate unit linear compressor of inventing drives the manufacture method of the structure of U-shaped and coaxial pulse-tube cold finger simultaneously, and the position of U-shaped vascular cold finger and coaxial pulse-tube cold finger can exchange.
The advantage of this patent is to make full use of U-shaped and design feature coaxial impulse pipe refrigerating machine, can realize separate unit linear compressor and drive U-shaped and coaxial pulse-tube cold finger simultaneously, paired pulses pipe refrigeration machine is practical significant the special dimensions such as Aero-Space.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that separate unit linear compressor drives the inertia cast pulse tube refrigerating machine of three kinds of exemplary configurations forms, wherein: (1) is U-shaped vascular cold finger for separate unit linear compressor drives, (2), for separate unit linear compressor drives co-axial pulse tube cold finger, (3) are separate unit linear compressor driving linear pattern vascular cold finger; Wherein 47 is linear compressor, and 48 is regenerator hot end heat exchanger, and 49 is regenerator, and 50 is cool end heat exchanger, and 51 is pulse tube, and 52 is pulse tube hot end heat exchanger, and 53 is inertia tube, and 54 is air reservoir;
Fig. 2 is the section plan that invented separate unit linear compressor drives the structure of U-shaped and coaxial pulse-tube cold finger simultaneously, wherein 1 is main basal base, 2 is time pedestal, 3 is bilateral type compressor pedestal, 4 is opposed type linear compressor main member, 5 is the left outside shell of compressor, 6 is compressor right casing, 7 is connecting leg on compressor, 8 is upper main heat exchanger, 9 is heat exchanger last time, 10 is upper regenerator, 11 is upper pulse tube, 12 is upper cool end heat exchanger, 13 is upper vacuum (-tight) housing, 14 is upper pulse tube connecting leg, 15 is upper inertia tube, 16 is upper air reservoir 16, 17 is upper protective cover 17, 22 is venthole on compressor, 23 is compression chamber, axis centered by 36, 7 ' be connecting leg under compressor, 8 ' be lower main heat exchanger, 9 ' be next heat exchanger, 10 ' be lower regenerator, 11 ' be lower pulse tube, 12 ' be lower cool end heat exchanger, 13 ' be lower vacuum (-tight) housing, 14 ' be lower pulse tube connecting leg, 15 ' be lower inertia tube, 16 ' be lower air reservoir, 17 ' be lower protective cover, 22 ' be compressor lower production well,
Fig. 3 is the generalized section that main basal base 1 and time pedestal 2 support opposed type linear compressor, and wherein 18 is time pedestal lower surface, and 19 is main basal base upper surface;
Fig. 4 is the schematic perspective view for time pedestal 2, and wherein 20 for supporting cambered surface;
Fig. 5 (1) and Fig. 5 (2) are respectively section plan and the schematic perspective view of bilateral type compressor pedestal 3, wherein 24 is compressor upper support platform, 25 is brace table plane, 26 is side, pedestal lower-left, 27 is pedestal lower right sides, and 34 is side, upper right, 34 ' be side, upper left, 21 is upper support platform through hole, 21 ' be lower support platform through hole;
Fig. 6 (1) and Fig. 6 (2) be respectively main heat exchanger 8 and lower main heat exchanger 8 ' schematic perspective view, wherein 46 is upper right through slot, 35 ' be bottom left through slot, 39 ' be bottom right through slot;
Fig. 7 (1) be upper main heat exchanger 8 and last time heat exchanger 9 assembled sectional view, Fig. 7 (2) be lower main heat exchanger 8 ' and next heat exchanger 9 ' assembled sectional view, wherein 28 is upper regenerator end infundibulate duct, 29 is upper pulse pipe end funnel-shaped hole road, and 44 is upper main heat exchanger lower surface, and 45 is upper main heat exchanger upper surface, 28 ' be lower annular gap, 29 ' be lower infundibulate duct, 44 ' be lower main heat exchanger lower surface, 45 ' be lower main heat exchanger upper surface;
Fig. 8 (1) and Fig. 8 (2) are respectively schematic perspective view and the section plan of cool end heat exchanger 12, and wherein 39 is upper regenerator end boss, and 40 is upper pulse pipe end boss, and 41 is upper U-shaped hole, and 42 is upper cold platform;
Fig. 9 (1) be lower cool end heat exchanger 12 ' schematic perspective view, wherein 40 ' be low groove, 41 ' be lower welding anchor ring, 42 ' be lower cold platform;
Figure 10 (1) is the assembled sectional view of upper regenerator 10, upper pulse tube 11 and upper cool end heat exchanger 12, Figure 10 (2) be lower regenerator 10 ', lower pulse tube 11 ' and lower cool end heat exchanger 12 ' assembled sectional view, wherein 37 is upper cold accumulator, 38 is upper cold-storage filler, 37 ' be lower cold accumulator, 38 ' be lower cold-storage filler;
Figure 11 (1) and Figure 11 (2) be respectively vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ' schematic perspective view, wherein 43 is upper open end anchor ring, 43 ' be lower open end anchor ring;
Figure 12 (1) and Figure 12 (2) be respectively inertia tube 15 and lower inertia tube 15 ' schematic perspective view, wherein 30 is upper inertia tube import, 31 is upper inertia tube outlet, 30 ' be lower inertia tube import, 31 ' be that lower inertia tube exports;
Figure 13 (1) and Figure 13 (2) be respectively air reservoir 16 and lower air reservoir 16 ' schematic perspective view, wherein 32 is upper air reservoir air inlet, 33 is upper air reservoir inner ring surface, 32 ' be lower air reservoir air inlet, 33 ' be lower air reservoir inner ring surface.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of this patent is described in further detail:
Fig. 2 is the section plan that invented separate unit linear compressor drives the structure of U-shaped and coaxial pulse-tube cold finger simultaneously, Fig. 3 is the generalized section that main basal base 1 and time pedestal 2 support opposed type linear compressor, Fig. 4 is the schematic perspective view for time pedestal 2, Fig. 5 (1) and Fig. 5 (2) are respectively section plan and the schematic perspective view of bilateral type compressor pedestal 3, Fig. 6 (1) and Fig. 6 (2) be respectively main heat exchanger 8 and lower main heat exchanger 8 ' schematic perspective view, Fig. 7 (1) be upper main heat exchanger 8 and last time heat exchanger 9 assembled sectional view, Fig. 7 (2) be lower main heat exchanger 8 ' and next heat exchanger 9 ' assembled sectional view, Fig. 8 (1) and Fig. 8 (2) are respectively schematic perspective view and the section plan of cool end heat exchanger 12, Fig. 9 (1) be lower cool end heat exchanger 12 ' schematic perspective view, Figure 10 (1) is the assembled sectional view of upper regenerator 10, upper pulse tube 11 and upper cool end heat exchanger 12, Figure 10 (2) be lower regenerator 10 ', lower pulse tube 11 ' and lower cool end heat exchanger 12 ' assembled sectional view, Figure 11 (1) and Figure 11 (2) be respectively vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ' schematic perspective view, Figure 12 (1) and Figure 12 (2) be respectively inertia tube 15 and lower inertia tube 15 ' schematic perspective view, Figure 13 (1) and Figure 13 (2) be respectively air reservoir 16 and lower air reservoir 16 ' schematic perspective view, the separate unit linear compressor of inventing drives the structure of U-shaped and coaxial pulse-tube cold finger by main basal base 1 simultaneously, inferior pedestal 2, bilateral type compressor pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor, compressor right casing 6, on compressor, connecting leg 7, upper main heat exchanger 8, last time, heat exchanger 9, upper regenerator 10, upper pulse tube 11, upper cool end heat exchanger 12, upper vacuum (-tight) housing 13, upper pulse tube connecting leg 14, upper inertia tube 15, upper air reservoir 16, upper protective cover 17, and connecting leg 7 under compressor ', lower main heat exchanger 8 ', next heat exchanger 9 ', lower regenerator 10 ', lower pulse tube 11 ', lower cool end heat exchanger 12 ', lower vacuum (-tight) housing 13 ', lower pulse tube connecting leg 14 ', lower inertia tube 15 ', lower air reservoir 16 ', lower protective cover 17 ' composition, it is characterized in that, main basal base 1 is as total supporting base of total, the lower end of inferior pedestal 2 processes time pedestal lower surface 18, and is supported on main basal base upper surface 19, and the upper end of inferior pedestal 2 processes supports cambered surface 20, supports the shell surface downside that cambered surface 20 is supported in bilateral type compressor pedestal 3, bilateral type compressor pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor and compressor right casing 6 form an opposed type linear compressor, this compressor adopts double-piston opposed formula structure, and left and right two parts are along central axis 36 full symmetrics, in the both sides up and down of bilateral type compressor pedestal 3, along central authorities, vertically open respectively on compressor venthole 22 on venthole 22 and compressor ', by venthole on compressor 22, realize the connection between connecting leg 7 on the compression chamber 23 of opposed type linear compressor and compressor, connecting leg 7 under the compression chamber 23 by compressor lower production well 22 ' realize opposed type linear compressor and compressor ' between connection, in the both sides of bilateral type compressor pedestal 3, process respectively compressor upper support platform 24 and compressor lower support platform 24 ', compressor upper support platform 24 contact to connect by the upper main heat exchangers 8 of 25 pairs, upper support platform plane and supports, compressor lower support platform 24 ' by lower support platform plane 25 ' to lower main heat exchanger 8 ' contact connection support, compressor upper support platform 24 and compressor lower support platform 24 ' on process respectively upper support platform through hole 21 and lower support platform through hole 21 ', side, pedestal lower-left 26 seal weldings of the openend of the left outside shell 5 of compressor and bilateral type compressor pedestal 3, pedestal lower right sides 27 seal weldings of the openend of compressor right casing 6 and bilateral type compressor pedestal 3, last time heat exchanger 9 insert with one heart upper main heat exchanger 8 within and be welded to connect, the lower main heat exchanger 8 of next heat exchanger 9 ' insert with one heart ' within and be welded to connect, on compressor, one end of connecting leg 7 is connected with venthole on compressor 22, the other end with last time heat exchanger 8 be connected, and be communicated with upper regenerator 10 by the upper regenerator end infundibulate duct 28 in last time heat exchanger 8, connecting leg 7 under compressor ' one end and compressor lower production well 22 ' be connected, the other end and lower main heat exchanger 8 ' be connected, and by lower main heat exchanger 8 ' with next heat exchanger 9 ' between formation lower annular gap 28 ' with lower regenerator 10 ' be communicated with, upper regenerator 10 and upper pulse tube 11 are arranged in parallel, one end of upper regenerator 10 and upper pulse tube 11 is inserted abreast upper regenerator end boss 39 and the upper pulse pipe end boss 40 of cool end heat exchanger 12 and is welded to connect, and the other end inserts abreast in heat exchanger 9 last time and is welded to connect, lower pulse tube 11 ' regenerator 10 under inserting with one heart ' among, lower regenerator 10 ' and lower pulse tube 11 ' one end insert with one heart lower cool end heat exchanger 12 ' within, lower regenerator 10 ' and lower pulse tube 11 ' the other end insert respectively lower main heat exchanger 8 ' and next heat exchanger 9 ' within, one end of upper pulse tube connecting leg 14 with last time heat exchanger 9 be connected, and be communicated with upper pulse tube 11 by the upper pulse pipe end funnel-shaped hole road 29 in last time heat exchanger 9, the other end of upper pulse tube connecting leg 14 is drawn through the upper right through slot 40 of upper main heat exchanger 8 bottoms, and then through upper support platform through hole 21, be communicated with inertia tube import 30, lower pulse tube connecting leg 14 ' one end and next heat exchanger 9 ' be connected, and the lower infundibulate duct 29 by next heat exchanger 9 ' interior ' with lower pulse tube 11 ' be communicated with, lower pulse tube connecting leg 14 ' the other end through lower support platform through hole 21 ', then with lower inertia tube import 30 ' be communicated with, upper inertia tube 15 closely coils on compressor right casing 6, and upper inertia tube outlet 31 is connected with upper air reservoir air inlet 32, lower inertia tube 15 ' closely coil on the left outside shell 5 of compressor, lower inertia tube outlet 31 ' with lower air reservoir air inlet 32 ' be connected, upper air reservoir 16 is the hollow sealed volume that an interior ring diameter is slightly larger than compressor right casing 6 external diameters, and upper air reservoir inner ring surface 33 is held on compressor right casing 6, lower air reservoir 16 is the hollow sealed volume that an interior ring diameter is slightly larger than left outside shell 5 external diameters of compressor, lower air reservoir inner ring surface 33 ' be held on the left outside shell 5 of compressor, working gas is by bilateral type compressor pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor, compressor right casing 6, on compressor, connecting leg 7, upper main heat exchanger 8, last time, heat exchanger 9, upper regenerator 10, upper pulse tube 11, upper cool end heat exchanger 12, upper pulse tube connecting leg 14, upper inertia tube 15, connecting leg 7 under air reservoir 16 and compressor ', lower main heat exchanger 8 ', next heat exchanger 9 ', lower regenerator 10 ', lower pulse tube 11 ', lower cool end heat exchanger 12 ', lower pulse tube connecting leg 14 ', lower inertia tube 15 ', reciprocating vibration in the confined space of lower air reservoir 16 ' composition, upper protective cover 17 is the case of one end sealing, and side, upper right 34 seal weldings of its openend and bilateral type compressor pedestal 3, cover in upper inertia tube 15, upper air reservoir 16 and compressor right casing 6 wherein, lower protective cover 17 ' be the case of one end sealing, side, the upper left 34 ' seal welding of its openend and bilateral type compressor pedestal 3, by lower inertia tube 15 ', lower air reservoir 16 ' and the left outside shell 5 of compressor cover in wherein, thereby jointly form a kind of separate unit linear compressor and drive U-shaped and structure coaxial pulse-tube cold finger simultaneously.
The separate unit linear compressor of inventing drives U-shaped and structure coaxial pulse-tube cold finger to be produced as follows simultaneously: the high thermal conductivity metal plate that main basal base 1 is 30mm by thickness is made, the flatness of dull and stereotyped upper and lower surface is all used fine turning lathe, milling machine and grinding machine processing to ensure to be 4.0 μ m, dull and stereotyped horizontal positioned, carries out vertical support to total, inferior pedestal 2 is made by high-thermal conductive metal material, the flatness of inferior pedestal lower surface 18 is used fine turning lathe, milling machine and grinding machine processing to ensure to be 3.0 μ m, support the method processing that cambered surface 20 is used the silk thread cutting of being careful, match with the shell surface downside cambered surface of bilateral type compressor pedestal 3, bilateral type compressor pedestal 3 adopts high thermal conductivity and high-intensity metal material to make, its both sides adopt precise numerical control machine process respectively brace table 24 and compressor lower support platform 24 on compressor ', the outer surface of the two use respectively fine turning lathe, milling machine and grinding machine process brace table plane 25 and lower support platform plane 25 ', brace table 24 and compressor lower support platform 24 on compressor ' on use respectively drilling machine process brace table through hole 21 and lower support platform through hole 21 ', the left outside shell 5 of compressor and compressor right casing 6 all adopt high-intensity metal material to make, wherein the side, pedestal lower-left 26 of the openend of the left outside shell 5 of compressor and bilateral type compressor pedestal 3 adopts electron beam technology seal welding, and the pedestal lower right sides 27 of the openend of compressor right casing 6 and bilateral type compressor pedestal 3 adopts electron beam technology seal welding, on compressor, connecting leg 7 adopts the pure copper tube of internal diameter 6.0mm to be made, on its one end and compressor, venthole 22 adopts Vacuum Soldering Technology to be welded to connect, the other end is drawn by the hollow structure of upper main heat exchanger 8 bottoms, and adopt Vacuum Soldering Technology to be welded on heat exchanger 9 last time, be communicated with the upper regenerator end infundibulate duct 28 in last time heat exchanger 9, the pure copper tube of connecting leg 7 under compressor ' employing internal diameter 5.0mm is made, its one end and compressor lower production well 22 ' employing Vacuum Soldering Technology is welded to connect, the other end is from the bottom left through slot 35 of lower main heat exchanger 8 ' bottom ' draw, and adopt Vacuum Soldering Technology to be welded on lower main heat exchanger 8 ' upper, with lower main heat exchanger 8 ' and next heat exchanger 9 ' between the lower annular gap 28 ' be communicated with that forms, upper pulse tube 11 and lower pulse tube 11 ' all adopt the stainless steel of low heat conductivity or titanium alloy material to make, adopt slow wire feeding wire cutting method to process, inwall grinding and polishing, ensures that inwall fineness is better than 0.5 μ m, upper regenerator 10 is by upper cold accumulator 37 and be filled in cold-storage filler 38 on the disc of upper cold accumulator 37 inside and form, lower regenerator 10 ' by lower cold accumulator 37 ' and be filled in cold-storage filler 38 under the annular of lower cold accumulator 37 ' inside ' form, wherein going up stainless steel or the titanium alloy material of cold accumulator 37 and lower cold accumulator 37 ' all adopt low heat conductivity makes, adopt slow wire feeding wire cutting method to process, inwall grinding and polishing, all ensure that inwall fineness is better than 2.0 μ m, upper cold-storage filler 38 and lower cold-storage filler 38 ' formed by silk screen or the tight filling of sphere of high specific heat, upper main heat exchanger 8,Last time heat exchanger 9 and lower main heat exchanger 8 ', high-purity oxygenless copper material of next heat exchanger 9 ' all adopt high thermal conductivity makes; The inner slow wire feeding line cutting technologies that use of upper main heat exchanger 8 are processed into a hollow structure, and last time, heat exchanger 9 inserted in upper main heat exchanger 8 with one heart, and the joint face between the two uses Vacuum Soldering Technology welding; Fitting closely with upper brace table plane 25 in upper main heat exchanger lower surface 44, uses bolt to connect between the two; Within upper main heat exchanger 8 is inserted respectively with one heart in the lower end of upper regenerator 10 and upper pulse tube 11, insertion depth is between 3.0mm, and the contact-making surface that inserts position all uses Vacuum Soldering Technology welding; Use wire cutting method to process upper right through slot 46 in the right both sides of upper main heat exchanger 8; In heat exchanger 9, respectively used precision machine tool to process regenerator end infundibulate duct 28 and upper pulse pipe end funnel-shaped hole road 29 with upper regenerator 10 concentric position vertical with upper pulse tube 11 in last time, and use honing machine to grind the two inwall, make its surface smoothness all higher than 0.01mm; The funnel opening internal diameter in upper regenerator end infundibulate duct 28 is identical with the external diameter of upper regenerator 10, realize being communicated with between upper compressor connecting leg 7 and upper regenerator 10 by upper regenerator end infundibulate duct 28, the funnel opening internal diameter in upper pulse pipe end funnel-shaped hole road 29 is identical with the external diameter of upper pulse tube 11, realizes being communicated with between upper pulse tube connecting leg 14 and upper pulse tube 11 by upper pulse pipe end funnel-shaped hole road 29; Lower main heat exchanger 8 ' inside is used slow wire feeding line cutting technology to be processed into a hollow structure, next heat exchanger 9 ' main heat exchanger 8 under inserting with one heart ' in, the joint face between the two uses Vacuum Soldering Technology welding; Next time heat exchanger 9 ' interior use precise numerical control machine process lower infundibulate duct 29 ', lower infundibulate duct 29 ' funnel opening internal diameter and lower pulse tube 11 ' external diameter identical, lower pulse tube 11 ' by lower infundibulate duct 29 ' realization and lower pulse tube connecting leg 14 ' between be communicated with; Lower main heat exchanger 8 ' and next heat exchanger 9 ' between form lower annular gap 28 ', connecting leg 7 under compressor ' by lower annular gap 28 ' with lower regenerator 10 ' be communicated with; Lower main heat exchanger lower surface 44 ' with compressor lower support platform 24 ' the laminating of lower support platform plane 25 ' closely, between the two, use bolt to connect; Lower regenerator 10 ' and lower pulse tube 11 ' one end insert with one heart respectively lower main heat exchanger 8 ' and next heat exchanger 9 ' within, insertion depth is 2.5mm, the contact-making surface that inserts position all uses Vacuum Soldering Technology welding; Lower main heat exchanger 8 ' the left and right sides use respectively wire cutting method process bottom left through slot 35 ' and bottom right through slot 39 '; Upper cool end heat exchanger 12 and lower cool end heat exchanger 12 ' all adopt the oxygenless copper material of high heat conduction to make; An end face of upper cool end heat exchanger 12 processes regenerator end boss 39 and upper pulse pipe end boss 40, and another end face uses fine turning lathe, milling machine and grinding machine to process the upper cold platform 42 that a flatness is 2.5 μ m,Upper regenerator end boss 39 and upper pulse pipe end boss 40 insert respectively in regenerator 10 and upper pulse tube 11 tube wall separately, insertion depth is 3.0mm, contact-making surface all adopts Vacuum Soldering Technology welding, and on interior the opening of upper cool end heat exchanger 12, U-shaped hole 41 is communicated with regenerator 10 and upper pulse tube 11, lower cool end heat exchanger 12 ' inside use slow wire feeding line cutting technology evenly to cut out slit, inner slit walls formation low groove 40 ', welding anchor ring 41 under forming on slit ', lower welding anchor ring 41 ' on use fine turning lathe, milling machine and grinding machine process the lower cold platform 42 that a flatness is 1.5 μ m ', lower regenerator 10 ' and lower pulse tube 11 ' cool end heat exchanger 12 under inserting with one heart ' within, wherein descend regenerator 10 ' tube wall and lower welding anchor ring 41 ' contact-making surface adopt Vacuum Soldering Technology welding, lower pulse tube 11 ' insertion low groove 40 ' in, insertion depth is 2.5mm, lower pulse tube 11 ' outer wall and low groove 40 ' inwall contact-making surface adopt the method close-fitting of interference fit, the magnitude of interference be lower pulse tube 11 ' external diameter exceed low groove 40 ' internal diameter 0.04mm, upper vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ' all adopt stainless steel material to use precise numerical control machine to process, one end sealing of upper vacuum (-tight) housing 13, its upper open end anchor ring 43 is connected by bolt and the seal with elastometic washer of " O " type with upper main heat exchanger upper surface 45, lower vacuum (-tight) housing 13 ' one end sealing, its lower open end anchor ring 43 ' with lower main heat exchanger upper surface 45 ' is connected by bolt and the seal with elastometic washer of " O " type, upper vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ' inside are all used vacuum molecular pump maintenance to be better than 3.0 × 10
-5the vacuum of Pa, upper pulse tube connecting leg 14 and lower pulse tube connecting leg 14 ' all adopt the pure copper tube of internal diameter 3.0～7.0mm to be made, one end of upper pulse tube connecting leg 14 and next heat exchanger 9 use Vacuum Soldering Technology to weld together, the other end of upper pulse tube connecting leg 14 is drawn through the upper right through slot 46 of upper main heat exchanger 8, and then through upper brace table through hole 21, use Vacuum Soldering Technology and upper inertia tube import 30 to weld together, lower pulse tube connecting leg 14 ' one end and next heat exchanger 9 ' use Vacuum Soldering Technology weld together, lower pulse tube connecting leg 14 ' the other end through the bottom right through slot 39 of lower main heat exchanger 8 ' bottom ' draw, then through lower support platform through hole 21 ', use Vacuum Soldering Technology and lower inertia tube import 30 ' weld together, upper inertia tube 15 and lower inertia tube 15 ' all adopt single hop or multistage long and thin metal copper pipe to make, upper inertia tube 15 closely coils on compressor right casing 6, and upper inertia tube outlet 31 is used Vacuum Soldering Technology to weld together with upper air reservoir air inlet 32, lower inertia tube 15 ' closely coil on the left outside shell 5 of compressor, lower inertia tube outlet 31 ' weld together with lower air reservoir air inlet 32 ' use Vacuum Soldering Technology, upper air reservoir 16 and lower air reservoir 16 ' all adopt the flexible metal material of high thermal conductivity to make,Upper air reservoir 16 use precise numerical control machine and Vacuum Soldering Technology to be made into an inner ring slightly larger in diameter in compressor right casing 6 external diameters and outside ring diameter be slightly less than the hollow sealed volume of upper protective cover 17 internal diameters, the inner ring of upper air reservoir 16 is closely buckled on compressor right casing 6; Lower air reservoir 16 ' use precise numerical control machine and Vacuum Soldering Technology be made into an inner ring slightly larger in diameter in the left outside shell 6 ' external diameter of compressor and outside ring diameter be slightly less than the hollow sealed volume of lower protective cover 17 ' internal diameter, lower air reservoir 16 ' inner ring be closely buckled on the left outside shell 5 of compressor; Upper protective cover 17 and lower protective cover 17 ' all adopt the metal material of high thermal conductivity to make, use respectively precise numerical control machine to be made into the housing of one end sealing, wherein go up the openend of protective cover 17 and the side, upper right 34 of bilateral type compressor pedestal 3 adopts electron beam technology seal welding, upper inertia tube 15, upper air reservoir 16 and compressor right casing 6 are covered in wherein; Lower protective cover 17 ' openend and side, upper left 34 ' employing electron beam technology seal welding of bilateral type compressor pedestal 3, by lower inertia tube 15 ', lower air reservoir 16 ' and the left outside shell 5 of compressor cover in wherein.
The separate unit linear compressor of inventing drives the manufacture method of the structure of U-shaped and coaxial pulse-tube cold finger simultaneously, and the position of U-shaped vascular cold finger and coaxial pulse-tube cold finger can exchange.
Claims (2)
1. separate unit linear compressor drives a structure for U-shaped and coaxial pulse-tube cold finger, comprises main basal base (1), inferior pedestal (2), bilateral type compressor pedestal (3), opposed type linear compressor main member (4), the left outside shell of compressor (5), compressor right casing (6), connecting leg on compressor (7), upper main heat exchanger (8), heat exchanger last time (9), upper regenerator (10), upper pulse tube (11), upper cool end heat exchanger (12), upper vacuum (-tight) housing (13), upper pulse tube connecting leg (14), upper inertia tube (15), upper air reservoir (16), upper protective cover (17), and connecting leg (7 ') under compressor, lower main heat exchanger (8 '), next heat exchanger (9 '), lower regenerator (10 '), lower pulse tube (11 '), lower cool end heat exchanger (12 '), lower vacuum (-tight) housing (13 '), lower pulse tube connecting leg (14 '), lower inertia tube (15 '), lower air reservoir (16 ') and lower protective cover (17 '), is characterized in that, main basal base (1) is as total supporting base of total, the lower end of inferior pedestal (2) processes time pedestal lower surface (18), and be supported on main basal base upper surface (19), the upper end of inferior pedestal (2) processes supports cambered surface (20), supports the shell surface downside that cambered surface (20) is supported in bilateral type compressor pedestal (3), bilateral type compressor pedestal (3), opposed type linear compressor main member (4), the left outside shell of compressor (5) and compressor right casing (6) form an opposed type linear compressor, this compressor adopts double-piston opposed formula structure, and left and right two parts are along central axis (36) full symmetric, venthole on compressor (22) and compressor lower production well (22 ') are vertically opened respectively along central authorities in both sides up and down at bilateral type compressor pedestal (3), by venthole on compressor (22), realize the connection between connecting leg (7) on the compression chamber (23) of opposed type linear compressor and compressor, by compressor lower production well (22 '), realize the connection between connecting leg (7 ') under the compression chamber (23) of opposed type linear compressor and compressor, in the both sides of bilateral type compressor pedestal (3), process respectively compressor upper support platform (24) and compressor lower support platform (24 '), compressor upper support platform (24) contacts to connect to upper main heat exchanger (8) by upper support platform plane (25) and supports, and compressor lower support platform (24 ') contacts to connect to lower main heat exchanger (8 ') by lower support platform plane (25 ') and supports, on compressor upper support platform (24) and compressor lower support platform (24 '), process respectively upper support platform through hole (21) and lower support platform through hole (21 '), side, pedestal lower-left (26) seal welding of the openend of the left outside shell of compressor (5) and bilateral type compressor pedestal (3), pedestal lower right sides (27) seal welding of the openend of compressor right casing (6) and bilateral type compressor pedestal (3), within heat exchanger last time (9) inserts main heat exchanger (8) with one heart and be welded to connect, within next heat exchanger (9 ') inserts lower main heat exchanger (8 ') with one heart and be welded to connect, one end of connecting leg on compressor (7) is connected with venthole on compressor (22), and the other end is connected with heat exchanger last time (8), and is communicated with upper regenerator (10) by the upper regenerator end infundibulate duct (28) in heat exchanger last time (8), one end of connecting leg under compressor (7 ') is connected with compressor lower production well (22 '), the other end is connected with lower main heat exchanger (8 '), and is communicated with lower regenerator (10 ') by the lower annular gap (28 ') of formation between lower main heat exchanger (8 ') and next heat exchanger (9 '), upper regenerator (10) and upper pulse tube (11) are arranged in parallel, one end of upper regenerator (10) and upper pulse tube (11) is inserted abreast upper regenerator end boss (39) and the upper pulse pipe end boss (40) of cool end heat exchanger (12) and is welded to connect, and the other end inserts abreast in heat exchanger last time (9) and is welded to connect, lower pulse tube (11 ') inserts among lower regenerator (10 ') with one heart, within one end of lower regenerator (10 ') and lower pulse tube (11 ') is inserted lower cool end heat exchanger (12 ') with one heart, within the other end of lower regenerator (10 ') and lower pulse tube (11 ') inserts respectively lower main heat exchanger (8 ') and next heat exchanger (9 '), one end of upper pulse tube connecting leg (14) is connected with heat exchanger last time (9), and be communicated with upper pulse tube (11) by the upper pulse pipe end funnel-shaped hole road (29) in heat exchanger last time (9), the other end of upper pulse tube connecting leg (14) is drawn through the upper right through slot (40) of upper main heat exchanger (8) bottom, and then through upper support platform through hole (21), be communicated with inertia tube import (30), one end of lower pulse tube connecting leg (14 ') is connected with next heat exchanger (9 '), and be communicated with lower pulse tube (11 ') by the lower infundibulate duct (29 ') in next heat exchanger (9 '), the other end of lower pulse tube connecting leg (14 '), through lower support platform through hole (21 '), is then communicated with lower inertia tube import (30 '), upper inertia tube (15) closely coils on compressor right casing (6), and upper inertia tube outlet (31) is connected with upper air reservoir air inlet (32), lower inertia tube (15 ') closely coils on the left outside shell of compressor (5), and lower inertia tube outlet (31 ') is connected with lower air reservoir air inlet (32 '), upper air reservoir (16) is the hollow sealed volume that an interior ring diameter is slightly larger than compressor right casing (6) external diameter, and upper air reservoir inner ring surface (33) is held on compressor right casing (6), lower air reservoir (16) is the hollow sealed volume that an interior ring diameter is slightly larger than the left outside shell of compressor (5) external diameter, and lower air reservoir inner ring surface (33 ') is held on the left outside shell of compressor (5), working gas is by bilateral type compressor pedestal (3), opposed type linear compressor main member (4), the left outside shell of compressor (5), compressor right casing (6), connecting leg on compressor (7), upper main heat exchanger (8), heat exchanger last time (9), upper regenerator (10), upper pulse tube (11), upper cool end heat exchanger (12), upper pulse tube connecting leg (14), upper inertia tube (15), connecting leg (7 ') under air reservoir (16) and compressor, lower main heat exchanger (8 '), next heat exchanger (9 '), lower regenerator (10 '), lower pulse tube (11 '), lower cool end heat exchanger (12 '), lower pulse tube connecting leg (14 '), lower inertia tube (15 '), reciprocating vibration in the confined space that lower air reservoir (16 ') forms, upper protective cover (17) is the case of one end sealing, and side, upper right (34) seal welding of its openend and bilateral type compressor pedestal (3), covers in upper inertia tube (15), upper air reservoir (16) and compressor right casing (6) wherein, lower protective cover (17 ') is the case of one end sealing, side, upper left (34 ') seal welding of its openend and bilateral type compressor pedestal (3), lower inertia tube (15 '), lower air reservoir (16 ') and the left outside shell of compressor (5) are covered in wherein, thereby jointly form a kind of separate unit linear compressor, drive U-shaped and structure coaxial pulse-tube cold finger simultaneously.
2. a kind of separate unit linear compressor according to claim 1 drives the structure of U-shaped and coaxial pulse-tube cold finger, it is characterized in that, described U-shaped vascular cold finger and the position of coaxial pulse-tube cold finger can exchange.
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| CN201420028431.4U CN203771769U (en) | 2014-01-17 | 2014-01-17 | Structure of single linear compressor for driving U-type and coaxial pulse tube cryocoolers |
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| CN201420028431.4U CN203771769U (en) | 2014-01-17 | 2014-01-17 | Structure of single linear compressor for driving U-type and coaxial pulse tube cryocoolers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759453A (en) * | 2014-01-17 | 2014-04-30 | 中国科学院上海技术物理研究所 | U-shaped and coaxial pulse tube cold finger structure driven by single linear compressor and manufacturing method thereof |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759453A (en) * | 2014-01-17 | 2014-04-30 | 中国科学院上海技术物理研究所 | U-shaped and coaxial pulse tube cold finger structure driven by single linear compressor and manufacturing method thereof |
| CN103759453B (en) * | 2014-01-17 | 2015-11-25 | 中国科学院上海技术物理研究所 | Separate unit linear compressor drives U-shaped and coaxial pulse-tube coldfinger and manufacture method |
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