CN103759452B - Separate unit linear compressor drives straight line and coaxial pulse-tube coldfinger and manufacture method - Google Patents

Separate unit linear compressor drives straight line and coaxial pulse-tube coldfinger and manufacture method Download PDF

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CN103759452B
CN103759452B CN201410020998.1A CN201410020998A CN103759452B CN 103759452 B CN103759452 B CN 103759452B CN 201410020998 A CN201410020998 A CN 201410020998A CN 103759452 B CN103759452 B CN 103759452B
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heat exchanger
compressor
pulse tube
tube
regenerator
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CN103759452A (en
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党海政
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Shanghai Institute of Technical Physics of CAS
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Shanghai Institute of Technical Physics of CAS
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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 invention discloses structure and manufacture method that a kind of separate unit linear compressor drives straight line and coaxial pulse-tube cold finger, this structure main basal base, secondary pedestal, bilateral type compressor pedestal, opposed type linear compressor main member, the left outside shell of compressor, compressor right casing, upper pulse tube hot end heat exchanger, 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, upper protective cover, on lift support and compressor under connecting leg, 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 present invention makes full use of the design feature of straight line and coaxial pulse-tube refrigerator, can realize separate unit linear compressor and drive straight line and coaxial pulse-tube cold finger simultaneously, practical significant at special dimensions such as Aero-Space of paired pulses control cold.

Description

Separate unit linear compressor drives straight line and coaxial pulse-tube coldfinger and manufacture method
Technical field
The invention belongs to refrigeration & cryogenic engineering field, relate to pulse tube refrigerating machine, particularly a kind of separate unit linear compressor drives structure and the manufacture method of straight line and coaxial pulse-tube cold finger.
Background technology
Pulse tube refrigerating machine is a significant innovation to regenerating type low-temperature refrigerator, which eliminates the cold junction displacer be widely used in conventional regenerating type low-temperature refrigerator (as Stirling and G-M refrigeration machine), achieves 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, the present invention proposes structure and the manufacture method that a kind of separate unit linear compressor drives straight line and coaxial pulse-tube cold finger.
The separate unit linear compressor invented drives the structure of straight line and coaxial pulse-tube cold finger by main basal base 1 simultaneously, 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, upper pulse tube hot end heat exchanger 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, on lift connecting leg 7 ' under support 29 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 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, vertically to open on compressor venthole 22 ' on venthole 22 and compressor respectively along central authorities in the both sides up and down of bilateral type compressor pedestal 3, realize the connection between the compression chamber 23 of opposed type linear compressor and upper hopper shape duct 28 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 40 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, venthole 22 is connected directly between on heat exchanger 11 last time, and is communicated with upper regenerator 10 by the upper hopper shape duct 28 in last time heat exchanger 11, 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 regenerator 10 to insert with one heart within main heat exchanger 8 and is welded to connect, upper cool end heat exchanger 12 is arranged at the junction of regenerator 10 and upper pulse tube 11, it is logical structure in a square, upper conical slit pore 41 is opened in left and right, be communicated with upper pulse tube 11 with upper regenerator 10 respectively, upper pulse tube 11 and upper regenerator 10 are welded to connect in the cool end heat exchanger upper and lower with one heart vertical insertion 12 respectively, on upper pulse tube 11 top, pulse tube hot end heat exchanger 7 is set, upper pulse tube 11 vertically inserts upper pulse tube hot end heat exchanger 7 inside and is welded to connect, upper pulse tube hot end heat exchanger 7 is a special-shaped composite construction, the upper connection headkerchief 43 opening upper intercommunicating pore 42 by upper cylindrical slot heat exchanging body 35 and inside of an intensive cutting slit from inside forms, upper cylindrical slot heat exchanging body 35 and upper connection headkerchief 43 weld together the upper pulse tube hot end heat exchanger 7 of composition, on lift one end of support 29 and upper brace table plane 25 is connected and fixed, the other end lifting support 29 lifts supporting role to upper pulse tube hot end heat exchanger 7, 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, one end of upper pulse tube connecting leg 14 is connected with upper pulse tube hot end heat exchanger 7, and be communicated with upper pulse tube 11 by the upper intercommunicating pore 42 in upper pulse tube hot end heat exchanger 7 and upper cylindrical slot heat exchanging body 35, the other end of upper pulse tube connecting leg 14, through upper brace table through hole 40, 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 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 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, 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 hot end heat exchanger 7, 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 straight line and coaxial pulse-tube cold finger simultaneously.
Drive the manufacture method of the structure of straight line and coaxial pulse-tube cold finger to be described as follows below in conjunction with accompanying drawing to invented separate unit linear compressor simultaneously:
Fig. 2 drives the section plan of the structure of straight line and coaxial pulse-tube cold finger for invented separate unit linear compressor 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 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 is the assembled sectional view of upper regenerator 10, upper pulse tube 11, upper cool end heat exchanger 12 and upper pulse tube hot end heat exchanger 7, Fig. 7 is the schematic perspective view of lower main heat exchanger 8 ', Fig. 8 is the assembled sectional view of lower main heat exchanger 8 ' and next heat exchanger 9 ', Fig. 9 is the schematic perspective view of lower cool end heat exchanger 12 ', Figure 10 is the assembled sectional view of lower regenerator 10 ', lower pulse tube 11 ' and lower cool end heat exchanger 12 ', Figure 11 (1) and Figure 11 (2) is respectively the schematic perspective view of vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 ', Figure 12 (1) and Figure 12 (2) is respectively the schematic perspective view of inertia tube 15 and lower inertia tube 15 ', Figure 13 (1) and Figure 13 (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 40 and lower support platform through hole 21 ' respectively, venthole 22 and all use wire cutting method cutting to form with the upper hopper under shed 44 in the upper hopper shape duct 28 in last time heat exchanger 9 on compressor, ensure that on compressor, venthole 22 is all identical with the aperture of upper hopper under shed 44, worst error is no more than 5.0 μm, and when ensureing to connect on compressor the hole heart of venthole 22 and upper hopper under shed 44 point-blank, worst error is no more than 10.0 μm, being communicated with between the compression chamber 23 of opposed type linear compressor and upper regenerator 10 is realized with upper hopper shape duct 28 by venthole on compressor 22, 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 stainless steel of low heat conductivity or titanium alloy material 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 disc 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 going up cold accumulator 37 and lower cold accumulator 37 ' all adopts the stainless steel of low heat conductivity or titanium alloy material 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 ' are formed 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 and last time heat exchanger 9 all adopt the high-purity oxygen-free copper material of high thermal conductivity to make, wherein going up main heat exchanger 8 inside uses low-speed WEDM technology to be processed into a hollow structure, last time, heat exchanger 9 inserted in upper main heat exchanger 8 with one heart, therebetween joint face uses Vacuum Soldering Technology welding, heat exchanger last time lower surface 21 and upper brace table plane 25 are fitted closely, use bolt to connect therebetween, precision machine tool was used to process upper hopper shape duct 28 with the position of upper regenerator 10 vertical concentric in last time in heat exchanger 9, and use honing machine grinding inwall, make its surface smoothness all higher than 0.01mm, in the insertion with one heart of upper regenerator 10 within main heat exchanger 8, insertion depth remains between 2.0 ~ 4.0mm, and the contact surface inserting position all uses Vacuum Soldering Technology to weld, 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 ' make by the oxygenless copper material of high thermal conductivity, upper cool end heat exchanger 12 is arranged between regenerator 10 and upper pulse tube 11, its outside is square structure, adopt low-speed WEDM processing method to open upper conical slit pore 41 at the middle part of square structure, be communicated with upper regenerator 10 with upper pulse tube 11, the two ends of upper cool end heat exchanger 12 adopt Vacuum Soldering Technology to be welded to connect with the tube wall of upper pulse tube 11 and upper regenerator 10 respectively, 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, on lift support 29 and adopt the metal material of higher-strength to make, on lift one end of support 29 and upper brace table plane 25 is connected and fixed, the other end lifts supporting role to upper pulse tube hot end heat exchanger 7, and the two ends of above lifting support 29 all adopt Vacuum Soldering Technology to be welded to connect with upper brace table plane 25 and upper pulse tube hot end heat exchanger 7 respectively, 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 46, 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, upper intercommunicating pore 42 in one end of upper pulse tube connecting leg 14 and upper pulse tube hot end heat exchanger 7 uses Vacuum Soldering Technology to weld together, the other end of upper pulse tube connecting leg 14, through upper brace table through hole 40, then uses Vacuum Soldering Technology and upper inertia tube import 30 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.
The separate unit linear compressor invented drives the manufacture method of the structure of straight line and coaxial pulse-tube cold finger simultaneously, and the position of straight line vascular cold finger and coaxial pulse-tube cold finger can exchange.
The invention has the advantages that the design feature making full use of straight line and coaxial pulse-tube refrigerator, separate unit linear compressor can be realized and drive straight line and coaxial pulse-tube cold finger 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 45 is linear compressor, and 46 is regenerator hot end heat exchanger, and 47 is regenerator, and 48 is cool end heat exchanger, and 49 is pulse tube, and 50 is pulse tube hot end heat exchanger, and 51 is inertia tube, and 52 is air reservoir;
Fig. 2 drives the section plan of the structure of straight line and coaxial pulse-tube cold finger for invented separate unit linear compressor 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 upper pulse tube hot end heat exchanger, 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, 17 is upper protective cover, 22 is venthole on compressor, 23 is compression chamber, 29 on lift support 29, 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, 40 is upper brace table through hole, and 40 ' is lower support platform through hole;
Fig. 6 is the assembled sectional view of upper regenerator 10, upper pulse tube 11, upper cool end heat exchanger 12 and upper pulse tube hot end heat exchanger 7, wherein 21 is heat exchanger last time lower surface, 28 is upper hopper shape duct, 35 is upper cylindrical slot heat exchanging body, and 37 is upper cold accumulator, and 38 is upper cold-storage filler, 41 is upper conical slit pore, 42 is upper intercommunicating pore, and 43 is upper connection headkerchief, and 44 is upper hopper under shed;
Fig. 7 is the schematic perspective view of lower main heat exchanger 8 ', and wherein 35 ' is bottom left through slot, and 39 ' is bottom right through slot;
Fig. 8 is the assembled sectional view of lower main heat exchanger 8 ' and next heat exchanger 9 ', and wherein 28 ' is lower annular gap, and 29 ' is lower infundibulate duct, and 44 ' is lower main heat exchanger lower surface, and 45 ' is lower main heat exchanger upper surface;
Fig. 9 is the schematic perspective view of lower cool end heat exchanger 12 ', and wherein 40 ' is low groove, and 41 ' is lower welding anchor ring, and 42 ' is lower cold platform;
Figure 10 is the assembled sectional view of lower regenerator 10 ', lower pulse tube 11 ' and lower cool end heat exchanger 12 ', and wherein 37 ' is lower cold accumulator, and 38 ' is lower cold-storage filler;
Figure 11 (1) and Figure 11 (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 12 (1) and Figure 12 (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 13 (1) and Figure 13 (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
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:
Fig. 2 drives the section plan of the structure of straight line and coaxial pulse-tube cold finger for invented separate unit linear compressor 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 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 is the assembled sectional view of upper regenerator 10, upper pulse tube 11, upper cool end heat exchanger 12 and upper pulse tube hot end heat exchanger 7; Fig. 7 is the schematic perspective view of lower main heat exchanger 8 '; Fig. 8 is the assembled sectional view of lower main heat exchanger 8 ' and next heat exchanger 9 '; Fig. 9 is the schematic perspective view of lower cool end heat exchanger 12 '; Figure 10 is the assembled sectional view of lower regenerator 10 ', lower pulse tube 11 ' and lower cool end heat exchanger 12 '; Figure 11 (1) and Figure 11 (2) is respectively the schematic perspective view of vacuum (-tight) housing 13 and lower vacuum (-tight) housing 13 '; Figure 12 (1) and Figure 12 (2) is respectively the schematic perspective view of inertia tube 15 and lower inertia tube 15 '; Figure 13 (1) and Figure 13 (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 straight line and coaxial pulse-tube cold finger by main basal base 1 simultaneously, 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, upper pulse tube hot end heat exchanger 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, on lift connecting leg 7 ' under support 29 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 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, vertically to open on compressor venthole 22 ' on venthole 22 and compressor respectively along central authorities in the both sides up and down of bilateral type compressor pedestal 3, realize the connection between the compression chamber 23 of opposed type linear compressor and upper hopper shape duct 28 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 40 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, venthole 22 is connected directly between on heat exchanger 11 last time, and is communicated with upper regenerator 10 by the upper hopper shape duct 28 in last time heat exchanger 11, 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 regenerator 10 to insert with one heart within main heat exchanger 8 and is welded to connect, upper cool end heat exchanger 12 is arranged at the junction of regenerator 10 and upper pulse tube 11, it is logical structure in a square, upper conical slit pore 41 is opened in left and right, be communicated with upper pulse tube 11 with upper regenerator 10 respectively, upper pulse tube 11 and upper regenerator 10 are welded to connect in the cool end heat exchanger upper and lower with one heart vertical insertion 12 respectively, on upper pulse tube 11 top, pulse tube hot end heat exchanger 7 is set, upper pulse tube 11 vertically inserts upper pulse tube hot end heat exchanger 7 inside and is welded to connect, upper pulse tube hot end heat exchanger 7 is a special-shaped composite construction, the upper connection headkerchief 43 opening upper intercommunicating pore 42 by upper cylindrical slot heat exchanging body 35 and inside of an intensive cutting slit from inside forms, upper cylindrical slot heat exchanging body 35 and upper connection headkerchief 43 weld together the upper pulse tube hot end heat exchanger 7 of composition, on lift one end of support 29 and upper brace table plane 25 is connected and fixed, the other end lifting support 29 lifts supporting role to upper pulse tube hot end heat exchanger 7, 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, one end of upper pulse tube connecting leg 14 is connected with upper pulse tube hot end heat exchanger 7, and be communicated with upper pulse tube 11 by the upper intercommunicating pore 42 in upper pulse tube hot end heat exchanger 7 and upper cylindrical slot heat exchanging body 35, the other end of upper pulse tube connecting leg 14, through upper brace table through hole 40, 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 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 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, 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 hot end heat exchanger 7, 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 straight line and coaxial pulse-tube cold finger simultaneously, 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 40 and lower support platform through hole 21 ' respectively, venthole 22 and all use wire cutting method cutting to form with the upper hopper under shed 44 in the upper hopper shape duct 28 in last time heat exchanger 9 on compressor, ensure that on compressor, venthole 22 is all identical with the aperture of upper hopper under shed 44, worst error is no more than 5.0 μm, and when ensureing to connect on compressor the hole heart of venthole 22 and upper hopper under shed 44 point-blank, worst error is no more than 10.0 μm, being communicated with between the compression chamber 23 of opposed type linear compressor and upper regenerator 10 is realized with upper hopper shape duct 28 by venthole on compressor 22, under compressor, connecting leg 7 ' adopts the pure copper tube of internal diameter 5.0mm 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 stainless steel of low heat conductivity or titanium alloy material 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 disc 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 going up cold accumulator 37 and lower cold accumulator 37 ' all adopts the stainless steel of low heat conductivity or titanium alloy material 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 ' are formed 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 and last time heat exchanger 9 all adopt the high-purity oxygen-free copper material of high thermal conductivity to make, wherein going up main heat exchanger 8 inside uses low-speed WEDM technology to be processed into a hollow structure, last time, heat exchanger 9 inserted in upper main heat exchanger 8 with one heart, therebetween joint face uses Vacuum Soldering Technology welding, heat exchanger last time lower surface 21 and upper brace table plane 25 are fitted closely, use bolt to connect therebetween, precision machine tool was used to process upper hopper shape duct 28 with the position of upper regenerator 10 vertical concentric in last time in heat exchanger 9, and use honing machine grinding inwall, make its surface smoothness all higher than 0.01mm, in the insertion with one heart of upper regenerator 10 within main heat exchanger 8, insertion depth is between 3.0mm, and the contact surface inserting position all uses Vacuum Soldering Technology to weld, 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 between 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 ' make by the oxygenless copper material of high thermal conductivity, upper cool end heat exchanger 12 is arranged between regenerator 10 and upper pulse tube 11, its outside is square structure, adopt low-speed WEDM processing method to open upper conical slit pore 41 at the middle part of square structure, be communicated with upper regenerator 10 with upper pulse tube 11, the two ends of upper cool end heat exchanger 12 adopt Vacuum Soldering Technology to be welded to connect with the tube wall of upper pulse tube 11 and upper regenerator 10 respectively, 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 between 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 0.04mm that the external diameter of lower pulse tube 11 ' exceedes low groove 40 ', on lift support 29 and adopt the metal material of higher-strength to make, on lift one end of support 29 and upper brace table plane 25 is connected and fixed, the other end lifts supporting role to upper pulse tube hot end heat exchanger 7, and the two ends of above lifting support 29 all adopt Vacuum Soldering Technology to be welded to connect with upper brace table plane 25 and upper pulse tube hot end heat exchanger 7 respectively, 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 46, 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 6.0mm to be made, upper intercommunicating pore 42 in one end of upper pulse tube connecting leg 14 and upper pulse tube hot end heat exchanger 7 uses Vacuum Soldering Technology to weld together, the other end of upper pulse tube connecting leg 14, through upper brace table through hole 40, then uses Vacuum Soldering Technology and upper inertia tube import 30 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.
Described separate unit linear compressor drives the manufacture method of the structure of straight line and coaxial pulse-tube cold finger simultaneously, and the position of straight line vascular cold finger and coaxial pulse-tube cold finger can exchange.

Claims (3)

1. separate unit linear compressor drives a structure for straight line and coaxial pulse-tube cold finger, by 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), upper pulse tube hot end heat exchanger (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), on lift connecting leg (7 ') under support (29) 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 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 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 between the compression chamber (23) of opposed type linear compressor and upper hopper shape duct (28) 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 (40) 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, venthole (22) is connected directly between on heat exchanger last time (9), and is communicated with upper regenerator (10) by the upper hopper shape duct (28) in 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 regenerator (10) to insert with one heart within main heat exchanger (8) and is welded to connect, upper cool end heat exchanger (12) is arranged at the junction of regenerator (10) and upper pulse tube (11), it is logical structure in a square, upper conical slit pore (41) is opened in left and right, be communicated with upper pulse tube (11) with upper regenerator (10) respectively, upper pulse tube (11) and upper regenerator (10) are respectively from being welded to connect in cool end heat exchanger (12) upper and lower with one heart vertical insertion, on upper pulse tube (11) top, upper pulse tube hot end heat exchanger (7) is set, upper pulse tube (11) vertically inserts upper pulse tube hot end heat exchanger (7) inside and is welded to connect, upper pulse tube hot end heat exchanger (7) is a special-shaped composite construction, the upper connection headkerchief (43) of opening upper intercommunicating pore (42) by upper cylindrical slot heat exchanging body (35) and inside of an intensive cutting slit from inside forms, upper cylindrical slot heat exchanging body (35) and upper connection headkerchief (43) weld together the upper pulse tube hot end heat exchanger (7) of composition, on lift one end of support (29) and upper brace table plane (25) is connected and fixed, on lift support (29) the other end supporting role is lifted to upper pulse tube hot end heat exchanger (7) rising, 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, one end of upper pulse tube connecting leg (14) is connected with upper pulse tube hot end heat exchanger (7), and be communicated with upper pulse tube (11) by the upper intercommunicating pore (42) in upper pulse tube hot end heat exchanger (7) and upper cylindrical slot heat exchanging body (35), the other end of upper pulse tube connecting leg (14), through upper brace table through hole (40), 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) 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) uses Vacuum Soldering Technology to weld together 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 ') uses Vacuum Soldering Technology to weld together 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), 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 hot end heat exchanger (7), 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 straight line and coaxial pulse-tube cold finger simultaneously.
2. the manufacture method of the structure of a separate unit linear compressor driving straight line as claimed in claim 1 and coaxial pulse-tube cold finger, it is characterized in that, 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, support the method processing that cambered surface (20) uses low-speed WEDM, match 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 on compressor (24) and compressor lower support platform (24 ') respectively, the outer surface of the two uses fine turning lathe respectively, milling machine and grinding machine process brace table plane (25) and lower support platform plane (25 '), on the compressor brace table (24) and compressor lower support platform (24 ') use drilling machine to process brace table through hole (40) and lower support platform through hole (21 ') respectively, venthole (22) and all use wire cutting method cutting to form with the upper hopper under shed (44) in the upper hopper shape duct (28) in heat exchanger last time (9) on compressor, ensure that on compressor, venthole (22) is all identical with the aperture of upper hopper under shed (44), worst error is no more than 5.0 μm, and when ensureing to connect on compressor the hole heart of venthole (22) and upper hopper under shed (44) point-blank, worst error is no more than 10.0 μm, being communicated with between the compression chamber (23) of opposed type linear compressor and upper regenerator (10) is realized with upper hopper shape duct (28) by venthole on compressor (22), 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 stainless steel of low heat conductivity or titanium alloy material 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) is by upper cold accumulator (37) and be filled in cold-storage filler (38) on the inner disc of upper cold accumulator (37) and 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 going up cold accumulator (37) and lower cold accumulator (37 ') all adopts the stainless steel of low heat conductivity or titanium alloy material 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 ') are formed by the silk screen of high specific heat or the tight filling of sphere, upper main heat exchanger (8), heat exchanger last time (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) and all adopted heat exchanger last time (9) the high-purity oxygen-free copper material of high thermal conductivity to make, wherein going up main heat exchanger (8) inside uses low-speed WEDM technology to be processed into a hollow structure, inserted heat exchanger last time (9) in main heat exchanger (8) with one heart, therebetween joint face uses Vacuum Soldering Technology welding, heat exchanger last time lower surface (21) and upper brace table plane (25) are fitted closely, use bolt to connect therebetween, within heat exchanger last time (9), used precision machine tool to process upper hopper shape duct (28) with the position of upper regenerator (10) vertical concentric, and use honing machine grinding inwall, make its surface smoothness all higher than 0.01mm, in the insertion with one heart of upper regenerator (10) within main heat exchanger (8), insertion depth remains between 2.0 ~ 4.0mm, and the contact surface inserting position all uses Vacuum Soldering Technology to weld, lower main heat exchanger (8 ') inside uses low-speed WEDM technology to be processed into a hollow structure, insert with one heart heat exchanger next time (9 ') in lower main heat exchanger (8 '), joint face therebetween uses Vacuum Soldering Technology welding, precise numerical control machine is used to process lower infundibulate duct (29 ') in heat exchanger next time (9 '), the funnel openings internal diameter of 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 '), lower main heat exchanger lower surface (44 ') is fitted closely with lower support platform plane (25 ') of compressor lower support platform (24 '), 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, 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 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 ') make by the oxygenless copper material of high thermal conductivity, upper cool end heat exchanger (12) is arranged between regenerator (10) and upper pulse tube (11), its outside is square structure, adopt low-speed WEDM processing method to open upper conical slit pore (41) at the middle part of square structure, be communicated with upper regenerator (10) with upper pulse tube (11), the two ends of upper cool end heat exchanger (12) adopt Vacuum Soldering Technology to be welded to connect with the tube wall of upper pulse tube (11) and upper regenerator (10) respectively, 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 '), anchor ring (41 ') is welded under being 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 ') are inserted 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 ') is inserted 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, on lift support (29) adopt higher-strength metal material make, on lift one end of support (29) and upper brace table plane (25) is connected and fixed, the other end lifts supporting role to upper pulse tube hot end heat exchanger (7) rising, and the two ends of above lifting support (29) all adopt Vacuum Soldering Technology to be welded to connect with upper brace table plane (25) and upper pulse tube hot end heat exchanger (7) respectively, 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 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 (46), one end of lower vacuum (-tight) housing (13 ') is closed, 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, upper intercommunicating pore (42) in one end of upper pulse tube connecting leg (14) and upper pulse tube hot end heat exchanger (7) uses Vacuum Soldering Technology to weld together, the other end of upper pulse tube connecting leg (14), through upper brace table through hole (40), then uses Vacuum Soldering Technology and upper inertia tube import (30) 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, 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 ') is closely coiled on the left outside shell of compressor (5), 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 of compressor (5), 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, upper left (34 ') of bilateral type compressor pedestal (3) adopt electron beam technology seal welding, lower inertia tube (15 '), lower air reservoir (16 ') and the left outside shell of compressor (5) are covered in wherein.
3. a kind of separate unit linear compressor according to claim 1 drives the structure of straight line and coaxial pulse-tube cold finger, it is characterized in that, described straight line vascular cold finger and the location swap of coaxial pulse-tube cold finger.
CN201410020998.1A 2014-01-17 2014-01-17 Separate unit linear compressor drives straight line and coaxial pulse-tube coldfinger and manufacture method Active CN103759452B (en)

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CN112240650B (en) * 2020-09-15 2021-11-19 中国科学院上海技术物理研究所 Straight-through slit precooling heat exchanger of precooling type low-temperature throttling refrigerator and manufacturing method

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