CN204084932U - Separate unit linear compressor drives the structure of two coaxial pulse-tube cold fingers - Google Patents
Separate unit linear compressor drives the structure of two coaxial pulse-tube cold fingers Download PDFInfo
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- CN204084932U CN204084932U CN201420310481.1U CN201420310481U CN204084932U CN 204084932 U CN204084932 U CN 204084932U CN 201420310481 U CN201420310481 U CN 201420310481U CN 204084932 U CN204084932 U CN 204084932U
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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
Abstract
The utility model discloses the structure that a kind of separate unit linear compressor drives two coaxial pulse-tube cold fingers, this structure is by main basal base, secondary pedestal, bilateral type compressor pedestal, opposed type linear compressor main member, the left outside shell of compressor, compressor right casing, connecting leg on compressor, upper main heat exchanger, last time heat exchanger, upper regenerator, upper pulse tube, upper cool end heat exchanger, upper vacuum (-tight) housing, upper pulse tube connecting leg, upper inertia tube, upper air reservoir, connecting leg under upper protective cover and compressor, lower main heat exchanger, next heat exchanger, lower regenerator, lower pulse tube, lower cool end heat exchanger, lower vacuum (-tight) housing, lower pulse tube connecting leg, lower inertia tube, lower air reservoir, lower protective cover composition.The utility model makes full use of the design feature of coaxial impulse pipe refrigerating machine, inertia tube phase modulation apparatus and linear compressor, separate unit linear compressor can be realized and drive two coaxial pulse-tube cold fingers simultaneously, practical significant at special dimensions such as Aero-Space of paired pulses control cold.
Description
Technical field
This patent belongs to refrigeration & cryogenic engineering field, relates to pulse tube refrigerating machine, and particularly a kind of separate unit linear compressor drives the structure of two coaxial pulse-tube cold fingers.
Background technology
Pulse tube refrigerating machine is a significant innovation to regenerating type low-temperature refrigerator, which eliminate the cold junction displacer be widely used in conventional regenerating type low-temperature refrigerator (as Stirling and G-M refrigeration machine), achieve the low vibration of cold junction, low interference and without wearing and tearing; And the important improvement in 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, all obtain a wide range of applications in Aero-Space, low-temperature electronics, superconduction industry and cryosurgery industry etc.
The driving compressor of pulse tube refrigerating machine is divided into linear compressor and two kinds, G-M type compressor.The pulse tube refrigerating machine of the application such as space flight and military affairs, very strict restriction is had to weight and volume, for the linear compressor that the pulse tube refrigerating machine of this part application generally all adopts lightweight high frequency to operate, the operating frequency of linear compressor at more than 30Hz, and for the frequency of the comparatively heavy G-M type compressor of Ground Application generally at 1 ~ 2Hz.Thus, according to the difference driving compressor, again pulse tube refrigerating machine is divided for the high frequency pulse tube cooler driven by linear compressor and two kinds, the low frequency pulse tube system refrigeration machine by G-M type driven compressor.The high frequency pulse tube cooler 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 primarily 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) composition.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 pulse tube is connected by pipeline with the cold junction of regenerator; 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) eliminates the displacer of cold junction for control phase, and arrange corresponding phase modulating mechanism in hot junction.Wherein, inertia tube adds the pm mode of air reservoir because the outstanding advantages such as phase modulation wide ranges, structure be simple, stable and reliable for performance, becomes preferred manner at the special dimension such as Aero-Space and Military Application.
Traditionally, pulse tube refrigerating machine all adopts single compressor to drive the arrangement of separate unit pulse tube cold finger.Fig. 1 shows 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.
In concrete application practice, usually can run into the situation needing to provide refrigerating capacity at two different warm areas.As in space remote sensing telemetry system, same system may use shortwave and medium-wave infrared detector simultaneously, or medium wave and Long Wave Infrared Probe, and the operation temperature area of different detector is different; Or sometimes need cooled detector and optical system simultaneously, detector is not identical with the operating temperature of optical system yet.At this moment, conventional method is that employing two Cryo Refrigerators freeze at different temperature spots, and system is loose, and weight, volume, power consumption increase all greatly, in some special application fields (as Aero-Space and Military Application), bring very big inconvenience, sometimes even unacceptable.Emphasizing the Aero-Space of compact conformation and application reliability and the field such as military, seek to drive the scheme of two vascular cold fingers to become a great problem in the urgent need to address in application practice gradually with separate unit linear compressor.
Summary of the invention
In view of this, this patent proposes the structure that a kind of separate unit linear compressor drives two coaxial pulse-tube cold fingers.
The separate unit linear compressor invented drives the structure of two coaxial pulse-tube cold fingers by main basal base 1, secondary 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, connecting leg 7 on compressor, 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 ' forms, it is characterized in that, main basal base 1 is as total supporting base of total, the lower end of secondary pedestal 2 processes time pedestal lower surface 18, and is supported on main basal base upper surface 19, and the upper end of secondary pedestal 2 processes and supports cambered surface 20, supports cambered surface 20 and is supported on the downside of the shell surface of 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 axis 36 full symmetric centrally, venthole 22 and compressor lower production well 22 ' on compressor is vertically opened respectively along central authorities in the both sides up and down of bilateral type compressor pedestal 3, realize the connection on the compression chamber 23 of opposed type linear compressor and compressor between connecting leg 7 by venthole on compressor 22, realize the connection under the compression chamber 23 of opposed type linear compressor and compressor between connecting leg 7 ' by compressor lower production well 22 ', brace table 24 and compressor lower support platform 24 ' on compressor is processed respectively in the both sides of bilateral type compressor pedestal 3, on compressor, brace table 24 carries out contact connection support by upper brace table plane 25 to upper main heat exchanger 8, and compressor lower support platform 24 ' carries out contact by lower support platform plane 25 ' to lower main heat exchanger 8 ' and connects support, on the compressor brace table 24 and compressor lower support platform 24 ' process brace table through hole 21 and lower support platform through hole 21 ' respectively, the openend of the left outside shell 5 of compressor and pedestal lower left side 26 seal welding of bilateral type compressor pedestal 3, the openend of compressor right casing 6 and pedestal lower right sides 27 seal welding of bilateral type compressor pedestal 3, heat exchanger 9 to insert with one heart within upper main heat exchanger 8 and to be welded to connect last time, and next heat exchanger 9 ' inserts with one heart and is welded to connect within main heat exchanger 8 ' down, on compressor, one end of connecting leg 7 is connected with venthole on compressor 22, and the other end is connected with upper main heat exchanger 8, and is communicated with upper regenerator 10 with the upper annular gap 28 formed between heat exchanger 9 last time by upper main heat exchanger 8, under compressor, one end of connecting leg 7 ' is connected with compressor lower production well 22 ', and the other end is connected with lower main heat exchanger 8 ', and is communicated with lower regenerator 10 ' by the lower annular gap 28 ' formed between lower main heat exchanger 8 ' with next heat exchanger 9 ', upper pulse tube 11 inserts among regenerator 10 with one heart, one end of upper regenerator 10 and upper pulse tube 11 is inserted within cool end heat exchanger 12 with one heart, and the other end of upper regenerator 10 and upper pulse tube 11 inserts within main heat exchanger 8 and last time heat exchanger 9 respectively, lower pulse tube 11 ' inserts among lower regenerator 10 ' with one heart, one end of lower regenerator 10 ' and lower pulse tube 11 ' is inserted within lower cool end heat exchanger 12 ' with one heart, and the other end of lower regenerator 10 ' and lower pulse tube 11 ' inserts within lower main heat exchanger 8 ' and next heat exchanger 9 ' respectively, one end of upper pulse tube connecting leg 14 9 to be connected with heat exchanger last time, and is communicated with upper pulse tube 11 by the upper hopper shape duct 29 in last time heat exchanger 9, and the other end of upper pulse tube connecting leg 14, through upper brace table through hole 21, is then communicated with upper 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 ' that next heat exchanger 9 ' is interior, 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 5 of compressor, and lower inertia tube outlet 31 ' is connected with lower air reservoir air inlet 32 ', upper air reservoir 16 is the hollow sealed volume of an annular diameters 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 of an annular diameters slightly larger than compressor left outside shell 5 external diameter, and lower air reservoir inner ring surface 33 ' is 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, connecting leg 7 on compressor, 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 upper 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, the case that upper protective cover 17 is closed for one end, upper right side 34 seal welding of its openend and bilateral type compressor pedestal 3, covers in wherein by upper inertia tube 15, upper air reservoir 16 and compressor right casing 6, the case that lower protective cover 17 ' is closed for one end, side, the upper left 34 ' seal welding of its openend and bilateral type compressor pedestal 3, covers in wherein by left outside to lower inertia tube 15 ', lower air reservoir 16 ' and compressor shell 5, thus a kind of separate unit linear compressor of common formation drives the structure of two coaxial pulse-tube cold fingers.
The manufacture method of the structure of two coaxial pulse-tube cold fingers is driven to be described as follows below in conjunction with accompanying drawing to invented separate unit linear compressor:
Fig. 2 drives the section plan of the structure of two coaxial pulse-tube cold fingers for invented separate unit linear compressor; 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 time pedestal 2; Fig. 5 (1) and Fig. 5 (2) is respectively section plan and the schematic perspective view of bilateral type compressor pedestal 3; Fig. 6 (1) and Fig. 6 (2) is respectively the schematic perspective view of main heat exchanger 8 and lower main heat exchanger 8 '; Fig. 7 (1) for upper main heat exchanger 8 and last time heat exchanger 9 assembled sectional view, Fig. 7 (2) is the assembled sectional view of lower main heat exchanger 8 ' and next heat exchanger 9 '; Fig. 8 (1) and Fig. 8 (2) is respectively the schematic perspective view of cool end heat exchanger 12 and lower cool end heat exchanger 12 '; Fig. 9 (1) for the assembled sectional view of upper regenerator 10, upper pulse tube 11 and upper cool end heat exchanger 12, Fig. 9 (2) be lower regenerator 10 ', the assembled sectional view of lower pulse tube 11 ' and lower cool end heat exchanger 12 '; Figure 10 (1) and Figure 10 (2) is respectively the schematic perspective view of vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 '; Figure 11 (1) and Figure 11 (2) is respectively the schematic perspective view of inertia tube 15 and lower inertia tube 15 '; Figure 12 (1) and Figure 12 (2) is respectively the schematic perspective view of air reservoir 16 and lower air reservoir 16 '.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 all uses fine turning lathe, milling machine and grinding machine processing guarantee to be between 1.0 ~ 5.0 μm, flatbed horizontal is placed, and carries out vertical support to total; Secondary pedestal 2 is made by high-thermal conductive metal material, the flatness of secondary pedestal lower surface 18 uses fine turning lathe, milling machine and grinding machine processing guarantee to be between 1.0 ~ 5.0 μm, supporting cambered surface 20 uses the method for low-speed WEDM to process, and matches with cambered surface on the downside of the shell surface of bilateral type compressor pedestal 3; Bilateral type compressor pedestal 3 adopts the metal material of high thermal conductivity and high strength to make, its both sides adopt precise numerical control machine to process brace table 24 and compressor lower support platform 24 ' on compressor respectively, the outer surface of the two uses fine turning lathe, milling machine and grinding machine to process brace table plane 25 and lower support platform plane 25 ' respectively, on the compressor brace table 24 and compressor lower support platform 24 ' uses drilling machine to process brace table through hole 21 and lower support platform through hole 21 ' respectively; The left outside shell 5 of compressor and compressor right casing 6 all adopt the metal material of high strength to make, wherein the openend of the left outside shell 5 of compressor and the pedestal lower left side 26 of bilateral type compressor pedestal 3 adopt electron beam technology seal welding, and the openend of compressor right casing 6 and the pedestal lower right sides 27 of bilateral type compressor pedestal 3 adopt 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, on its one end and compressor, venthole 22 adopts Vacuum Soldering Technology to be welded to connect, the other end is drawn from the upper left through slot 35 of upper main heat exchanger 8 bottom, and adopting Vacuum Soldering Technology to be welded on main heat exchanger 8, the upper annular gap 28 formed between heat exchanger 9 with upper main heat exchanger 8 and last time is communicated with; Under compressor, connecting leg 7 ' adopts the pure copper tube of internal diameter 3.0 ~ 8.0mm to be made, its one end and compressor lower production well 22 ' adopt Vacuum Soldering Technology to be welded to connect, the other end is drawn from the bottom left through slot 35 ' of lower main heat exchanger 8 ' bottom, and adopt Vacuum Soldering Technology to be welded on lower main heat exchanger 8 ', be communicated with the lower annular gap 28 ' formed between lower main heat exchanger 8 ' and next heat exchanger 9 '; Upper pulse tube 11 and lower pulse tube 11 ' all adopt the metal material of low heat conductivity to make, and adopt low-speed WEDM method to process, inwall grinding and polishing, ensure that inwall fineness is better than 0.5 μm; Upper regenerator 10 by upper cold accumulator 37 and be filled in upper cold accumulator 37 inside annular on cold-storage filler 38 form, lower regenerator 10 ' by lower cold accumulator 37 ' and under being filled in the inner annular of lower cold accumulator 37 ' cold-storage filler 38 ' form, wherein go up cold accumulator 37 and lower cold accumulator 37 ' all adopts the metal material of low heat conductivity to make, low-speed WEDM method is adopted to process, inwall grinding and polishing, all ensure that inwall fineness is better than 2.0 μm, upper cold-storage filler 38 and lower cold-storage filler 38 ' form by the silk screen of high specific heat or the tight filling of sphere; Upper main heat exchanger 8,Last time heat exchanger 9 and lower main heat exchanger 8 ' and next heat exchanger 9 ' all adopt the high-purity oxygen-free copper material of high thermal conductivity to make; Upper main heat exchanger 8 inside uses low-speed WEDM technology to be processed into a hollow structure, and last time, heat exchanger 9 inserted in upper main heat exchanger 8 with one heart, and joint face therebetween uses Vacuum Soldering Technology welding; The interior precise numerical control machine that uses of heat exchanger 9 last time processes upper hopper shape duct 29, the funnel openings internal diameter in upper hopper shape duct 29 is identical with the external diameter of upper pulse tube 11, and upper pulse tube 11 realizes being communicated with between upper pulse tube connecting leg 14 by upper hopper shape duct 29; Upper main heat exchanger 8 and last time form upper annular gap 28 between heat exchanger 9, and on compressor, connecting leg 7 is communicated with upper regenerator 10 by upper annular gap 28; Fitting closely with the upper brace table plane 25 of brace table 24 on compressor in upper main heat exchanger lower surface 44, uses bolt to connect therebetween; One end of upper regenerator 10 and upper pulse tube 11 is inserted within upper main heat exchanger 8 and last time heat exchanger 9 respectively with one heart, and insertion depth all remains between 2.0 ~ 4.0mm, and the contact surface inserting position all uses Vacuum Soldering Technology to weld; Wire cutting method is used to process upper left through slot 35 and upper right through slot 39 respectively in the left and right sides of upper main heat exchanger 8; Lower main heat exchanger 8 ' inside uses low-speed WEDM technology to be processed into a hollow structure, and next heat exchanger 9 ' inserts in lower main heat exchanger 8 ' with one heart, and joint face therebetween uses Vacuum Soldering Technology welding; Heat exchanger 9 ' next time interior use precise numerical control machine processes lower infundibulate duct 29 ', the funnel openings internal diameter in lower infundibulate duct 29 ' is identical with the external diameter of lower pulse tube 11 ', and lower pulse tube 11 ' is realized and being communicated with between lower pulse tube connecting leg 14 ' by lower infundibulate duct 29 '; Form lower annular gap 28 ' between lower main heat exchanger 8 ' and next heat exchanger 9 ', under compressor, connecting leg 7 ' is communicated with lower regenerator 10 ' by lower annular gap 28 '; Fitting closely with the lower support platform plane 25 ' of compressor lower support platform 24 ' in lower main heat exchanger lower surface 44 ', uses bolt to connect therebetween; One end of lower regenerator 10 ' and lower pulse tube 11 ' is inserted within lower main heat exchanger 8 ' and next heat exchanger 9 ' respectively with one heart, and insertion depth all remains between 2.0 ~ 4.0mm, and the contact surface inserting position all uses Vacuum Soldering Technology to weld; Use wire cutting method to process bottom left through slot 35 ' and bottom right through slot 39 ' respectively in the left and right sides of lower main heat exchanger 8 '; 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; The inside of upper cool end heat exchanger 12 uses low-speed WEDM technology evenly to cut out slit, inner slit walls forms upper groove 40, upper welding anchor ring 41 is formed on slit, on upper welding anchor ring 41, use fine turning lathe, milling machine and grinding machine to process a flatness be in upper cold platform 42 between 1.0 ~ 2.0 μm, upper regenerator 10 and upper pulse tube 11 insert within cool end heat exchanger 12 with one heartThe tube wall wherein going up regenerator 10 with on weld anchor ring 41 contact surface adopt Vacuum Soldering Technology to weld, upper pulse tube 11 inserts in upper groove 40, insertion depth remains between 2.0 ~ 3.0mm, the outer wall of upper pulse tube 11 and the contact internal walls face of upper groove 40 adopt the method close-fitting of interference fit, and the magnitude of interference is that the internal diameter that the external diameter of upper pulse tube 11 exceedes upper groove 40 is between 0.03 ~ 0.05mm, the inside of lower cool end heat exchanger 12 ' uses low-speed WEDM technology evenly to cut out slit, inner slit walls forms low groove 40 ', lower welding anchor ring 41 ' is formed on slit, fine turning lathe is used on lower welding anchor ring 41 ', milling machine and grinding machine process a flatness and are in lower cold platform 42 ' between 1.0 ~ 2.0 μm, lower regenerator 10 ' and lower pulse tube 11 ' insert within lower cool end heat exchanger 12 ' with one heart, the tube wall of regenerator 10 ' is wherein descended to adopt Vacuum Soldering Technology to weld with the lower contact surface welding anchor ring 41 ', lower pulse tube 11 ' inserts in low groove 40 ', insertion depth remains between 2.0 ~ 3.0mm, the outer wall of lower pulse tube 11 ' and the contact internal walls face of low groove 40 ' adopt the method close-fitting of interference fit, the magnitude of interference is that the internal diameter that the external diameter of lower pulse tube 11 ' exceedes low groove 40 ' is 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, and one end of upper vacuum (-tight) housing 13 is closed, and 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, one end of lower vacuum (-tight) housing 13 ' is closed, and its lower open end anchor ring 43 ' is connected by bolt and the seal with elastometic washer of " O " type with lower main heat exchanger upper surface 45 ', and upper vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ' inside all use 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 last time 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 39 of upper main heat exchanger 8 bottom, then through upper brace table through hole 21, Vacuum Soldering Technology and upper inertia tube import 30 is used to weld together, one end of lower pulse tube connecting leg 14 ' and next heat exchanger 9 ' use Vacuum Soldering Technology to weld together, the other end of lower pulse tube connecting leg 14 ' is drawn through the bottom right through slot 39 ' of lower main heat exchanger 8 ' bottom, then through lower support platform through hole 21 ', Vacuum Soldering Technology and lower inertia tube import 30 ' is used to 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, and upper inertia tube 15 closely coils on compressor right casing 6, and upper inertia tube outlet 31 uses Vacuum Soldering Technology to weld together with upper air reservoir air inlet 32, lower inertia tube 15 ' closely coils on the left outside shell 5 of compressor,Lower inertia tube outlet 31 ' uses Vacuum Soldering Technology to weld together with lower air reservoir air inlet 32 '; 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 annular diameters slightly larger than compressor right casing 6 external diameter, outer annular diameter is slightly less than the hollow sealed volume of upper protective cover 17 internal diameter, 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 to be made into an annular diameters slightly larger than compressor left outside shell 6 ' external diameter, outer annular diameter is slightly less than the hollow sealed volume of lower protective cover 17 ' internal diameter, the inner ring of lower air reservoir 16 ' is 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, precise numerical control machine is used to be made into the closed housing in one end respectively, the upper right side 34 of the openend and bilateral type compressor pedestal 3 of wherein going up protective cover 17 adopts electron beam technology seal welding, covers in wherein by upper inertia tube 15, upper air reservoir 16 and compressor right casing 6; The openend of lower protective cover 17 ' and the side 34 ', upper left of bilateral type compressor pedestal 3 adopt electron beam technology seal welding, are covered in wherein by left outside to lower inertia tube 15 ', lower air reservoir 16 ' and compressor shell 5.
The advantage of this patent is the design feature making full use of coaxial impulse pipe refrigerating machine, inertia tube phase modulation apparatus and linear compressor, separate unit linear compressor can be realized and drive two coaxial pulse-tube cold fingers simultaneously, practical significant at special dimensions such as Aero-Space of paired pulses control cold.
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 46 is linear compressor, and 47 is regenerator hot end heat exchanger, and 48 is regenerator, and 49 is cool end heat exchanger, and 50 is pulse tube, and 51 is pulse tube hot end heat exchanger, and 52 is inertia tube, and 53 is air reservoir;
Fig. 2 drives the section plan of the structure of two coaxial pulse-tube cold fingers for invented separate unit linear compressor, 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 ' is connecting leg under compressor, 8 ' is lower main heat exchanger, 9 ' is next heat exchanger, 10 ' is lower regenerator, 11 ' is lower pulse tube, 12 ' is lower cool end heat exchanger, 13 ' is lower vacuum (-tight) housing, 14 ' is lower pulse tube connecting leg, 15 ' is lower inertia tube, 16 ' is lower air reservoir, 17 ' is lower protective cover, 22 ' is 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 of secondary pedestal 2, and wherein 20 for supporting cambered surface;
Fig. 5 (1) and Fig. 5 (2) is respectively section plan and the schematic perspective view of bilateral type compressor pedestal 3, wherein 24 is brace table on compressor, 25 is brace table plane, 26 is pedestal lower left side, 27 is pedestal lower right sides, and 34 is upper right side, and 34 ' is side, upper left, 21 is upper brace table through hole, and 21 ' is lower support platform through hole;
Fig. 6 (1) and Fig. 6 (2) is respectively the schematic perspective view of main heat exchanger 8 and lower main heat exchanger 8 ', and wherein 35 is upper left through slot, and 39 is upper right through slot, and 35 ' is bottom left through slot, and 39 ' is bottom right through slot;
Fig. 7 (1) for upper main heat exchanger 8 and last time heat exchanger 9 assembled sectional view, Fig. 7 (2) is lower main heat exchanger 8 ' and the assembled sectional view of next heat exchanger 9 ', wherein 28 is upper annular gap, 29 is upper hopper shape duct, and 44 is upper main heat exchanger lower surface, and 45 is upper main heat exchanger upper surface, 28 ' is lower annular gap, 29 ' is lower infundibulate duct, and 44 ' is lower main heat exchanger lower surface, and 45 ' is lower main heat exchanger upper surface;
Fig. 8 (1) and Fig. 8 (2) is respectively the schematic perspective view of cool end heat exchanger 12 and lower cool end heat exchanger 12 ', and wherein 40 is upper groove, and 41 is upper welding anchor ring, 42 is upper cold platform, 40 ' is low groove, and 41 ' is lower welding anchor ring, and 42 ' is lower cold platform;
Fig. 9 (1) is the assembled sectional view of upper regenerator 10, upper pulse tube 11 and upper cool end heat exchanger 12, Fig. 9 (2) is lower regenerator 10 ', the assembled sectional view of lower pulse tube 11 ' and lower cool end heat exchanger 12 ', wherein 37 is upper cold accumulator, 38 is upper cold-storage filler, 37 ' is lower cold accumulator, and 38 ' is lower cold-storage filler;
Figure 10 (1) and Figure 10 (2) is respectively the schematic perspective view of vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ', and wherein 43 is upper open end anchor ring, and 43 ' is lower open end anchor ring;
Figure 11 (1) and Figure 11 (2) is respectively the schematic perspective view of inertia tube 15 and lower inertia tube 15 ', and wherein 30 is upper inertia tube import, and 31 is the outlet of upper inertia tube, and 30 ' is lower inertia tube import, and 31 ' exports for lower inertia tube;
Figure 12 (1) and Figure 12 (2) is respectively the schematic perspective view of air reservoir 16 and lower air reservoir 16 ', and wherein 32 is upper air reservoir air inlet, and 33 is upper air reservoir inner ring surface, and 32 ' is lower air reservoir air inlet, and 33 ' is lower air reservoir inner ring surface.
Detailed description of the invention
Be described in further detail below in conjunction with the detailed description of the invention of drawings and Examples to this patent:
Fig. 2 drives the section plan of the structure of two coaxial pulse-tube cold fingers for invented separate unit linear compressor; 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 time pedestal 2; Fig. 5 (1) and Fig. 5 (2) is respectively section plan and the schematic perspective view of bilateral type compressor pedestal 3; Fig. 6 (1) and Fig. 6 (2) is respectively the schematic perspective view of main heat exchanger 8 and lower main heat exchanger 8 '; Fig. 7 (1) for upper main heat exchanger 8 and last time heat exchanger 9 assembled sectional view, Fig. 7 (2) is the assembled sectional view of lower main heat exchanger 8 ' and next heat exchanger 9 '; Fig. 8 (1) and Fig. 8 (2) is respectively the schematic perspective view of cool end heat exchanger 12 and lower cool end heat exchanger 12 '; Fig. 9 (1) for the assembled sectional view of upper regenerator 10, upper pulse tube 11 and upper cool end heat exchanger 12, Fig. 9 (2) be lower regenerator 10 ', the assembled sectional view of lower pulse tube 11 ' and lower cool end heat exchanger 12 '; Figure 10 (1) and Figure 10 (2) is respectively the schematic perspective view of vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 '; Figure 11 (1) and Figure 11 (2) is respectively the schematic perspective view of inertia tube 15 and lower inertia tube 15 '; Figure 12 (1) and Figure 12 (2) is respectively the schematic perspective view of air reservoir 16 and lower air reservoir 16 ';
The separate unit linear compressor invented drives the structure of two coaxial pulse-tube cold fingers by main basal base 1, secondary 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, connecting leg 7 on compressor, 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 ' forms, it is characterized in that, main basal base 1 is as total supporting base of total, the lower end of secondary pedestal 2 processes time pedestal lower surface 18, and is supported on main basal base upper surface 19, and the upper end of secondary pedestal 2 processes and supports cambered surface 20, supports cambered surface 20 and is supported on the downside of the shell surface of 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 axis 36 full symmetric centrally, venthole 22 and compressor lower production well 22 ' on compressor is vertically opened respectively along central authorities in the both sides up and down of bilateral type compressor pedestal 3, realize the connection on the compression chamber 23 of opposed type linear compressor and compressor between connecting leg 7 by venthole on compressor 22, realize the connection under the compression chamber 23 of opposed type linear compressor and compressor between connecting leg 7 ' by compressor lower production well 22 ', brace table 24 and compressor lower support platform 24 ' on compressor is processed respectively in the both sides of bilateral type compressor pedestal 3, on compressor, brace table 24 carries out contact connection support by upper brace table plane 25 to upper main heat exchanger 8, and compressor lower support platform 24 ' carries out contact by lower support platform plane 25 ' to lower main heat exchanger 8 ' and connects support, on the compressor brace table 24 and compressor lower support platform 24 ' process brace table through hole 21 and lower support platform through hole 21 ' respectively, the openend of the left outside shell 5 of compressor and pedestal lower left side 26 seal welding of bilateral type compressor pedestal 3, the openend of compressor right casing 6 and pedestal lower right sides 27 seal welding of bilateral type compressor pedestal 3, heat exchanger 9 to insert with one heart within upper main heat exchanger 8 and to be welded to connect last time, and next heat exchanger 9 ' inserts with one heart and is welded to connect within main heat exchanger 8 ' down, on compressor, one end of connecting leg 7 is connected with venthole on compressor 22, and the other end is connected with upper main heat exchanger 8, and is communicated with upper regenerator 10 with the upper annular gap 28 formed between heat exchanger 9 last time by upper main heat exchanger 8, under compressor, one end of connecting leg 7 ' is connected with compressor lower production well 22 ', and the other end is connected with lower main heat exchanger 8 ', and is communicated with lower regenerator 10 ' by the lower annular gap 28 ' formed between lower main heat exchanger 8 ' with next heat exchanger 9 ', upper pulse tube 11 inserts among regenerator 10 with one heart, one end of upper regenerator 10 and upper pulse tube 11 is inserted within cool end heat exchanger 12 with one heart, and the other end of upper regenerator 10 and upper pulse tube 11 inserts within main heat exchanger 8 and last time heat exchanger 9 respectively, lower pulse tube 11 ' inserts among lower regenerator 10 ' with one heart, one end of lower regenerator 10 ' and lower pulse tube 11 ' is inserted within lower cool end heat exchanger 12 ' with one heart, and the other end of lower regenerator 10 ' and lower pulse tube 11 ' inserts within lower main heat exchanger 8 ' and next heat exchanger 9 ' respectively, one end of upper pulse tube connecting leg 14 9 to be connected with heat exchanger last time, and is communicated with upper pulse tube 11 by the upper hopper shape duct 29 in last time heat exchanger 9, and the other end of upper pulse tube connecting leg 14, through upper brace table through hole 21, is then communicated with upper 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 ' that next heat exchanger 9 ' is interior, 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 5 of compressor, and lower inertia tube outlet 31 ' is connected with lower air reservoir air inlet 32 ', upper air reservoir 16 is the hollow sealed volume of an annular diameters 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 of an annular diameters slightly larger than compressor left outside shell 5 external diameter, and lower air reservoir inner ring surface 33 ' is 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, connecting leg 7 on compressor, 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 upper 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, the case that upper protective cover 17 is closed for one end, upper right side 34 seal welding of its openend and bilateral type compressor pedestal 3, covers in wherein by upper inertia tube 15, upper air reservoir 16 and compressor right casing 6, the case that lower protective cover 17 ' is closed for one end, side, the upper left 34 ' seal welding of its openend and bilateral type compressor pedestal 3, covers in wherein by left outside to lower inertia tube 15 ', lower air reservoir 16 ' and compressor shell 5, thus a kind of separate unit linear compressor of common formation drives the structure of two coaxial pulse-tube cold fingers.
The high thermal conductivity metal plate that main basal base 1 is 20 ~ 40mm by thickness is made, and it is 3.0 μm that the flatness of dull and stereotyped upper and lower surface all uses fine turning lathe, milling machine and grinding machine to process guarantee, and flatbed horizontal is placed, and carries out vertical support to total; Secondary pedestal 2 is made by high-thermal conductive metal material, the flatness of secondary pedestal lower surface 18 uses fine turning lathe, milling machine and grinding machine processing guarantee to be 4.0 μm, supporting cambered surface 20 uses the method for low-speed WEDM to process, and matches with cambered surface on the downside of the shell surface of bilateral type compressor pedestal 3; Bilateral type compressor pedestal 3 adopts the metal material of high thermal conductivity and high strength to make, its both sides adopt precise numerical control machine to process brace table 24 and compressor lower support platform 24 ' on compressor respectively, the outer surface of the two uses fine turning lathe, milling machine and grinding machine to process brace table plane 25 and lower support platform plane 25 ' respectively, on the compressor brace table 24 and compressor lower support platform 24 ' uses drilling machine to process brace table through hole 21 and lower support platform through hole 21 ' respectively; The left outside shell 5 of compressor and compressor right casing 6 all adopt the metal material of high strength to make, wherein the openend of the left outside shell 5 of compressor and the pedestal lower left side 26 of bilateral type compressor pedestal 3 adopt electron beam technology seal welding, and the openend of compressor right casing 6 and the pedestal lower right sides 27 of bilateral type compressor pedestal 3 adopt electron beam technology seal welding; On compressor, connecting leg 7 adopts the pure copper tube of internal diameter 4.0mm 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 from the upper left through slot 35 of upper main heat exchanger 8 bottom, and adopting Vacuum Soldering Technology to be welded on main heat exchanger 8, the upper annular gap 28 formed between heat exchanger 9 with upper main heat exchanger 8 and last time is communicated with; Under compressor, connecting leg 7 ' adopts the pure copper tube of internal diameter 4.0mm to be made, its one end and compressor lower production well 22 ' adopt Vacuum Soldering Technology to be welded to connect, the other end is drawn from the bottom left through slot 35 ' of lower main heat exchanger 8 ' bottom, and adopt Vacuum Soldering Technology to be welded on lower main heat exchanger 8 ', be communicated with the lower annular gap 28 ' formed between lower main heat exchanger 8 ' and next heat exchanger 9 '; Upper pulse tube 11 and lower pulse tube 11 ' all adopt the metal material of low heat conductivity to make, and adopt low-speed WEDM method to process, inwall grinding and polishing, ensure that inwall fineness is better than 0.5 μm; Upper regenerator 10 by upper cold accumulator 37 and be filled in upper cold accumulator 37 inside annular on cold-storage filler 38 form, lower regenerator 10 ' by lower cold accumulator 37 ' and under being filled in the inner annular of lower cold accumulator 37 ' cold-storage filler 38 ' form, wherein go up cold accumulator 37 and lower cold accumulator 37 ' all adopts the metal material of low heat conductivity to make, low-speed WEDM method is adopted to process, inwall grinding and polishing, all ensure that inwall fineness is better than 2.0 μm, upper cold-storage filler 38 and lower cold-storage filler 38 ' form by the silk screen of high specific heat or the tight filling of sphere; Upper main heat exchanger 8,Last time heat exchanger 9 and lower main heat exchanger 8 ' and next heat exchanger 9 ' all adopt the high-purity oxygen-free copper material of high thermal conductivity to make; Upper main heat exchanger 8 inside uses low-speed WEDM technology to be processed into a hollow structure, and last time, heat exchanger 9 inserted in upper main heat exchanger 8 with one heart, and joint face therebetween uses Vacuum Soldering Technology welding; The interior precise numerical control machine that uses of heat exchanger 9 last time processes upper hopper shape duct 29, the funnel openings internal diameter in upper hopper shape duct 29 is identical with the external diameter of upper pulse tube 11, and upper pulse tube 11 realizes being communicated with between upper pulse tube connecting leg 14 by upper hopper shape duct 29; Upper main heat exchanger 8 and last time form upper annular gap 28 between heat exchanger 9, and on compressor, connecting leg 7 is communicated with upper regenerator 10 by upper annular gap 28; Fitting closely with the upper brace table plane 25 of brace table 24 on compressor in upper main heat exchanger lower surface 44, uses bolt to connect therebetween; One end of upper regenerator 10 and upper pulse tube 11 is inserted within upper main heat exchanger 8 and last time heat exchanger 9 respectively with one heart, and insertion depth is 3.0mm, and the contact surface inserting position all uses Vacuum Soldering Technology to weld; Wire cutting method is used to process upper left through slot 35 and upper right through slot 39 respectively in the left and right sides of upper main heat exchanger 8; Lower main heat exchanger 8 ' inside uses low-speed WEDM technology to be processed into a hollow structure, and next heat exchanger 9 ' inserts in lower main heat exchanger 8 ' with one heart, and joint face therebetween uses Vacuum Soldering Technology welding; Heat exchanger 9 ' next time interior use precise numerical control machine processes lower infundibulate duct 29 ', the funnel openings internal diameter in lower infundibulate duct 29 ' is identical with the external diameter of lower pulse tube 11 ', and lower pulse tube 11 ' is realized and being communicated with between lower pulse tube connecting leg 14 ' by lower infundibulate duct 29 '; Form lower annular gap 28 ' between lower main heat exchanger 8 ' and next heat exchanger 9 ', under compressor, connecting leg 7 ' is communicated with lower regenerator 10 ' by lower annular gap 28 '; Fitting closely with the lower support platform plane 25 ' of compressor lower support platform 24 ' in lower main heat exchanger lower surface 44 ', uses bolt to connect therebetween; One end of lower regenerator 10 ' and lower pulse tube 11 ' is inserted within lower main heat exchanger 8 ' and next heat exchanger 9 ' respectively with one heart, and insertion depth is 3.0mm, and the contact surface inserting position all uses Vacuum Soldering Technology to weld; Use wire cutting method to process bottom left through slot 35 ' and bottom right through slot 39 ' respectively in the left and right sides of lower main heat exchanger 8 '; 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; The inside of upper cool end heat exchanger 12 uses low-speed WEDM technology evenly to cut out slit, inner slit walls forms upper groove 40, upper welding anchor ring 41 is formed on slit, on upper welding anchor ring 41, use fine turning lathe, milling machine and grinding machine to process a flatness is upper cold platform 42 between 2.0 μm, upper regenerator 10 and upper pulse tube 11 insert within cool end heat exchanger 12 with one heart, the tube wall wherein going up regenerator 10 with on weld anchor ring 41 contact surface adopt Vacuum Soldering Technology to weld, upper pulse tube 11 inserts in upper groove 40Insertion depth is 2.0mm, and the outer wall of upper pulse tube 11 and the contact internal walls face of upper groove 40 adopt the method close-fitting of interference fit, and the magnitude of interference is the internal diameter that the external diameter of upper pulse tube 11 exceedes upper groove 40 is 0.04mm, the inside of lower cool end heat exchanger 12 ' uses low-speed WEDM technology evenly to cut out slit, inner slit walls forms low groove 40 ', lower welding anchor ring 41 ' is formed on slit, fine turning lathe is used on lower welding anchor ring 41 ', milling machine and grinding machine process the lower cold platform 42 ' that a flatness is 1.5 μm, lower regenerator 10 ' and lower pulse tube 11 ' insert within lower cool end heat exchanger 12 ' with one heart, the tube wall of regenerator 10 ' is wherein descended to adopt Vacuum Soldering Technology to weld with the lower contact surface welding anchor ring 41 ', lower pulse tube 11 ' inserts in low groove 40 ', insertion depth is 2.5mm, the outer wall of lower pulse tube 11 ' and the contact internal walls face of low groove 40 ' adopt the method close-fitting of interference fit, the magnitude of interference is the internal diameter that the external diameter of lower pulse tube 11 ' exceedes low groove 40 ' is 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, and one end of upper vacuum (-tight) housing 13 is closed, and 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, one end of lower vacuum (-tight) housing 13 ' is closed, and its lower open end anchor ring 43 ' is connected by bolt and the seal with elastometic washer of " O " type with lower main heat exchanger upper surface 45 ', and upper vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ' inside all use 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 3.0mm to be made, one end of upper pulse tube connecting leg 14 and last time 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 39 of upper main heat exchanger 8 bottom, then through upper brace table through hole 21, Vacuum Soldering Technology and upper inertia tube import 30 is used to weld together, one end of lower pulse tube connecting leg 14 ' and next heat exchanger 9 ' use Vacuum Soldering Technology to weld together, the other end of lower pulse tube connecting leg 14 ' is drawn through the bottom right through slot 39 ' of lower main heat exchanger 8 ' bottom, then through lower support platform through hole 21 ', Vacuum Soldering Technology and lower inertia tube import 30 ' is used to 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, and upper inertia tube 15 closely coils on compressor right casing 6, and upper inertia tube outlet 31 uses Vacuum Soldering Technology to weld together with upper air reservoir air inlet 32, lower inertia tube 15 ' closely coils on the left outside shell 5 of compressor, and lower inertia tube outlet 31 ' uses Vacuum Soldering Technology to weld together with lower air reservoir air inlet 32 ', 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 annular diameters slightly larger than compressor right casing 6 external diameter, outer annular diameter is slightly less than the hollow sealed volume of upper protective cover 17 internal diameter, 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 to be made into an annular diameters slightly larger than compressor left outside shell 6 ' external diameter, outer annular diameter is slightly less than the hollow sealed volume of lower protective cover 17 ' internal diameter, the inner ring of lower air reservoir 16 ' is 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, precise numerical control machine is used to be made into the closed housing in one end respectively, the upper right side 34 of the openend and bilateral type compressor pedestal 3 of wherein going up protective cover 17 adopts electron beam technology seal welding, covers in wherein by upper inertia tube 15, upper air reservoir 16 and compressor right casing 6; The openend of lower protective cover 17 ' and the side 34 ', upper left of bilateral type compressor pedestal 3 adopt electron beam technology seal welding, are covered in wherein by left outside to lower inertia tube 15 ', lower air reservoir 16 ' and compressor shell 5.
Claims (1)
1. separate unit linear compressor drives a structure for two coaxial pulse-tube cold fingers, comprises main basal base (1), secondary 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 (7) on compressor, 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 '), heat exchanger next time (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 '), with lower protective cover (17 '), it is characterized in that, main basal base (1) is as total supporting base of total, the lower end of secondary pedestal (2) processes time pedestal lower surface (18), and be supported on main basal base upper surface (19), the upper end of secondary pedestal (2) processes and supports cambered surface (20), supports cambered surface (20) and is supported on the downside of the shell surface of 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 axis (36) full symmetric centrally, venthole on compressor (22) and compressor lower production well (22 ') is vertically opened respectively along central authorities in the both sides up and down of bilateral type compressor pedestal (3), realize the connection on the compression chamber (23) of opposed type linear compressor and compressor between connecting leg (7) by venthole on compressor (22), realize the connection under the compression chamber (23) of opposed type linear compressor and compressor between connecting leg (7 ') by compressor lower production well (22 '), brace table on compressor (24) and compressor lower support platform (24 ') is processed respectively in the both sides of bilateral type compressor pedestal (3), on compressor, brace table (24) carries out contact connection support by upper brace table plane (25) to upper main heat exchanger (8), and compressor lower support platform (24 ') is carried out contact by lower support platform plane (25 ') to lower main heat exchanger (8 ') and connected support, on the compressor brace table (24) and compressor lower support platform (24 ') process brace table through hole (21) and lower support platform through hole (21 ') respectively, the openend of the left outside shell of compressor (5) and pedestal lower left side (26) seal welding of bilateral type compressor pedestal (3), the openend of compressor right casing (6) and pedestal lower right sides (27) seal welding of bilateral type compressor pedestal (3), inserting with one heart heat exchanger last time (9) within main heat exchanger (8) and to be welded to connect, next heat exchanger (9 ') to be inserted with one heart within lower main heat exchanger (8 ') and is welded to connect, on compressor, one end of connecting leg (7) is connected with venthole on compressor (22), the other end is connected with upper main heat exchanger (8), and is communicated with upper regenerator (10) by the upper annular gap (28) formed between upper main heat exchanger (8) with heat exchanger last time (9), under compressor, one end of connecting leg (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 ') formed between lower main heat exchanger (8 ') with next heat exchanger (9 '), upper pulse tube (11) inserts among regenerator (10) with one heart, one end of upper regenerator (10) and upper pulse tube (11) is inserted within cool end heat exchanger (12) with one heart, and the other end of upper regenerator (10) and upper pulse tube (11) inserts main heat exchanger (8) and within heat exchanger last time (9) respectively, lower pulse tube (11 ') is inserted among lower regenerator (10 ') with one heart, one end of lower regenerator (10 ') and lower pulse tube (11 ') is inserted within lower cool end heat exchanger (12 ') with one heart, and the other end of lower regenerator (10 ') and lower pulse tube (11 ') inserts within lower main heat exchanger (8 ') and next heat exchanger (9 ') respectively, one end of upper pulse tube connecting leg (14) was connected with heat exchanger last time (9), and be communicated with upper pulse tube (11) by the upper hopper shape duct (29) in heat exchanger last time (9), the other end of upper pulse tube connecting leg (14), through upper brace table through hole (21), is then communicated with upper 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 ') is closely coiled 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 of an annular diameters 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 of an annular diameters 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 (7) on compressor, 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 upper air reservoir (16) and compressor, lower main heat exchanger (8 '), heat exchanger next time (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, the case that upper protective cover (17) is closed for one end, upper right side (34) seal welding of its openend and bilateral type compressor pedestal (3), covers in wherein by upper inertia tube (15), upper air reservoir (16) and compressor right casing (6), the case that lower protective cover (17 ') is closed for one end, side, upper left (34 ') seal welding of its openend and bilateral type compressor pedestal (3), covers in wherein by lower inertia tube (15 '), lower air reservoir (16 ') and the left outside shell of compressor (5), thus a kind of separate unit linear compressor of common formation drives the structure of two coaxial pulse-tube cold fingers.
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| CN201420310481.1U CN204084932U (en) | 2014-01-17 | 2014-06-12 | Separate unit linear compressor drives the structure of two coaxial pulse-tube cold fingers |
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| CN104034080A (en) * | 2014-01-17 | 2014-09-10 | 中国科学院上海技术物理研究所 | Structure of two coaxial pulse tube cryocoolers by single linear compressor and manufacturing method thereof |
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| CN108253652A (en) * | 2018-01-10 | 2018-07-06 | 中国科学院上海技术物理研究所 | A kind of Split type welded hot end heat exchanger of coaxial type pulse pipe refrigerator |
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| US5303555A (en) * | 1992-10-29 | 1994-04-19 | International Business Machines Corp. | Electronics package with improved thermal management by thermoacoustic heat pumping |
| JP3102639B2 (en) * | 1998-07-23 | 2000-10-23 | エルジー電子株式会社 | Oil-free compressor-integrated pulsating tube refrigerator |
| JP3624109B2 (en) * | 1999-01-08 | 2005-03-02 | 東栄電機株式会社 | Compressor for cryogenic refrigerator and armature coil used therefor |
| JP2001221522A (en) * | 2000-02-10 | 2001-08-17 | Sumitomo Heavy Ind Ltd | Gas compressor for regenerative refrigeration system |
| CN1238670C (en) * | 2002-07-09 | 2006-01-25 | 中国科学院理化技术研究所 | Nonmagnetic low-vibration coaxial impulse pipe refrigerating machine |
| CN102735088B (en) * | 2012-06-25 | 2013-12-04 | 中国科学院上海技术物理研究所 | Conical slit-type hot end heat exchanger of coaxial pulse tube refrigerator and manufacturing method |
| CN104034080B (en) * | 2014-01-17 | 2016-01-13 | 中国科学院上海技术物理研究所 | Separate unit linear compressor drives structure and the manufacture method of two coaxial pulse-tube cold fingers |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104034080A (en) * | 2014-01-17 | 2014-09-10 | 中国科学院上海技术物理研究所 | Structure of two coaxial pulse tube cryocoolers by single linear compressor and manufacturing method thereof |
| CN104034080B (en) * | 2014-01-17 | 2016-01-13 | 中国科学院上海技术物理研究所 | Separate unit linear compressor drives structure and the manufacture method of two coaxial pulse-tube cold fingers |
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| CN104034080B (en) | 2016-01-13 |
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