CN103851822A - Refrigerating machine for compactly coupled inertia tube type linear pulse tube and manufacturing method - Google Patents
Refrigerating machine for compactly coupled inertia tube type linear pulse tube and manufacturing method Download PDFInfo
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- CN103851822A CN103851822A CN201410020987.3A CN201410020987A CN103851822A CN 103851822 A CN103851822 A CN 103851822A CN 201410020987 A CN201410020987 A CN 201410020987A CN 103851822 A CN103851822 A CN 103851822A
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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
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Abstract
The invention discloses a refrigerating machine for a compactly coupled inertia tube type high-frequency linear pulse tube and a manufacturing method. The refrigerating machine is composed of a main base, a secondary base, an irregularly shaped compressor base, oppositely arranged linear compressor primary components, a left compressor shell, a right compressor shell, a heat-end heat exchanger for pulse tube, a main heat exchanger, a secondary heat exchanger, a cold accumulator, a pulse tube, a cold-end heat exchanger, a vacuum cover, a pulse tube connecting pipe, an inertia tube, an air reservoir, a protecting cover and a lifting support. The structural features of the refrigerating machine for the linear pulse tube, an inertia tube phasing device and a linear compressor are fully utilized by the refrigerating machine provided by the invention, so that the compactness and the high reliability of the whole system are realized and a significance in practicability of the refrigerating machine for the linear pulse tube in the special fields, such as, aerospace field, and the like, is achieved.
Description
Technical field
The invention belongs to refrigeration and cryogenic engineering field, relate to pulse tube refrigerating machine, particularly a kind of close-coupled inertia cast straight pulse pipe refrigeration machine and manufacture method.
Background technology
Pulse tube refrigerating machine is to regenerating type low-temperature refrigerator significant innovation, and it has cancelled the cold junction displacer being widely used in conventional regenerating type low-temperature refrigerator (as Stirling and G-M refrigeration machine), has realized the low vibration of cold junction, low interference and without wearing and tearing; And through the important improvement on structure optimization and pm mode, at typical warm area, its actual efficiency has also reached the peak of regenerating type low-temperature refrigerator.These remarkable advantages make pulse tube refrigerating machine become a big hot topic of Cryo Refrigerator research over nearly 30 years, all obtain a wide range of applications at aspects such as Aero-Space, low-temperature electronics, superconduction industry and cryosurgery industry.
According to the correlation of pulse tube and regenerator, pulse tube refrigerating machine can be divided into again following three kinds of exemplary configurations modes: U-shaped, coaxial type and linear pattern.Three class pulse tube refrigerating machines are all mainly made up of compressor, connecting leg, pulse tube cold finger (comprising regenerator hot end heat exchanger, regenerator, cool end heat exchanger, pulse tube, pulse tube hot end heat exchanger and phase modulating mechanism).In linear pattern layout, pulse tube and regenerator are in a straight line; U-shaped layout refers to that pulse tube and regenerator are arranged in parallel, and the cold junction of pulse tube and regenerator is connected by pipeline; Coaxial type is arranged and is referred to that pulse tube and regenerator are arranged together with one heart.
Phase modulating mechanism is one of critical component of pulse tube refrigerating machine.The maximum feature that pulse tube refrigerating machine is different from conventional regenerating type low-temperature refrigerator (as Stirling or G-M refrigeration machine) is to have cancelled the displacer of cold junction for control phase, and has arranged corresponding phase modulating mechanism in hot junction.Conventional phase modulating mechanism mainly contains aperture and adds that air reservoir, valve add air reservoir, nozzle adds air reservoir and inertia tube adds air reservoir etc., correspondingly, pulse tube refrigerating machine is divided into pinhole type, valve type, nozzle type, inertia cast pulse tube refrigerating machine etc. according to the difference of above-mentioned phase modulating mechanism.Wherein inertia cast pulse tube refrigerating machine becomes the first-selected machine of space flight and Military Application pulse tube refrigerating machine because of its phase modulation wide ranges, the outstanding advantages such as simple in structure, stable and reliable for performance.
The compressor of driving pulse pipe refrigeration machine is divided into two kinds, linear compressor and G-M type compressor.The pulse tube refrigerating machine of the applications such as space flight and military affairs, weight and volume is had to very strict restriction, generally all adopt the linear compressor of lightweight high frequency running for the pulse tube refrigerating machine of this part application, the operating frequency of linear compressor more than 30Hz, and for the frequency of the comparatively heavy G-M type compressor of Ground Application generally at 1～2Hz.Thereby, according to the difference of drive compression machine, again pulse tube refrigerating machine is divided for to the high frequency pulse tube cooler that driven by linear compressor and by two kinds, the low frequency pulse tube system refrigeration machine of G-M type driven compressor.The high frequency pulse tube cooler being driven by linear compressor, due to compact conformation, the outstanding advantages such as lightweight, volume is little, efficiency is high, running is reliable, life expectancy is long, becomes the Regeneration variety of space flight regenerating type low-temperature refrigerator of new generation just day by day.
Fig. 1 has shown the routine combination schematic diagram of the inertia cast high frequency pulse tube cooler of the linear compressor driving of three kinds of exemplary configurations forms, and wherein: (1) is U-shaped, (2) are coaxial type, and (3) are linear pattern.According to Fig. 1, three kinds of exemplary configurations forms are all made up of linear compressor, connecting leg, regenerator hot end heat exchanger, regenerator, cool end heat exchanger, pulse tube, pulse tube hot end heat exchanger, inertia tube and air reservoir.
As seen from Figure 1, when pulse tube refrigerating machine adopts linear pattern arrangement, pulse tube and regenerator are in a straight line, air-flow does not need to turn back at cold junction, thereby reduce to greatest extent the flow resistance of cool end heat exchanger, give end air flow with minimum disturbance, thereby refrigerating efficiency is the highest in three kinds of arrangements, with the largest potentiality in the refrigeration that given energy is consuming time.In recent years, along with related application (as space flight and the cooling application of military infrared device etc.) is more and more harsher to refrigeration machine requirement, the advantage of the high refrigerating efficiency of linear pattern pulse tube refrigerating machine and large refrigerating capacity potentiality is paid much attention to just day by day, demonstrates gradually more and more wide application prospect.
As seen from Figure 1, inertia tube mainly uses the slender metal pipe that some draw ratios are very large, and air reservoir mainly uses the canister that certain empty volume can be provided.For practical application, the coupling of the phase modulating mechanism being made up of inertia tube and air reservoir and linear compressor, straight pulse pipe cold finger need to be a vital problem (particularly for space flight and Military Application) at the compact conformation not affecting in efficiency situation.Under many circumstances, often because a cramped construction that energy is practical cannot be provided, or after densification, brought very considerable Efficiency Decreasing, and it is real practical that many pulse tube refrigerating machine principle prototypes of having succeeded in developing cannot be entered.
For linear pattern pulse tube refrigerating machine, due to pulse tube and regenerator in alignment, structure is very loose, has more proposed very large challenge for its compact designed, becomes one of the U-shaped pulse tube refrigerating machine of inertia cast high frequency important bottleneck aspect practical.In the field such as space flight and military affairs of emphasizing application reliability and high refrigerating efficiency, obtaining practical close-coupled inertia cast high frequency linear pulse tube refrigerating machine has become a great problem in the urgent need to address in application practice gradually.
Summary of the invention
In view of this, the present invention proposes a kind of close-coupled structure and manufacture method that is applicable to inertia cast straight pulse pipe cold finger and linear compressor.
The close-coupled inertia cast high frequency linear pulse tube refrigerating machine of inventing, by main basal base 1, inferior pedestal 2, compressor abnormity pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor, compressor right casing 6, pulse tube hot end heat exchanger 7, main heat exchanger 8, inferior heat exchanger 9, regenerator 10, pulse tube 11, cool end heat exchanger 12, vacuum (-tight) housing 13, pulse tube connecting leg 14, inertia tube 15, air reservoir 16, protective cover 17, lift and support 29 and form, it is characterized in that, main basal base 1 is as total supporting base of total; The lower end of inferior pedestal 2 processes time pedestal lower surface 18, and be supported on main basal base upper surface 19, the upper end of inferior pedestal 2 processes respectively time pedestal upper left and supports cambered surface 20 and inferior pedestal upper right support cambered surface 21, is supported in respectively the shell surface downside of the left outside shell 5 of compressor and protective cover 17; Compressor abnormity pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor and compressor right casing 6 form an opposed type linear compressor; This compressor adopts double-piston opposed formula structure, and left and right two parts are along central axis 36 full symmetrics; Vertically open compressor venthole 22 in compressor abnormity pedestal 3 center upper portion, realize the connection between compression chamber 23 and the infundibulate duct 28 of opposed type linear compressor by compressor venthole 22; Upside at compressor abnormity pedestal 3 processes brace table 24 on a compressor, and on compressor, brace table 24 carries out vertical support by brace table plane 25 to main heat exchanger 8, and the while is as the main radiator structure in straight pulse pipe refrigeration machine hot junction; On compressor, on brace table 24, process brace table through hole 40; Side, pedestal lower-left 26 seal weldings of the openend of the left outside shell 5 of compressor and compressor abnormity pedestal 3, pedestal lower right sides 27 seal weldings of the openend of compressor right casing 6 and compressor abnormity pedestal 3; Within inferior heat exchanger 9 inserts main heat exchanger 8 with one heart from bottom and be welded to connect; Compressor venthole 22 is directly connected on time heat exchanger 11, and is realized and being communicated with regenerator 10 by the infundibulate duct 28 in inferior heat exchanger 11; Within regenerator 10 inserts main heat exchanger 8 with one heart from top and be welded to connect; Cool end heat exchanger 12 is arranged at the junction of regenerator 10 and pulse tube 11, and cool end heat exchanger 12 is logical structure in a square, and tapered slot hole 41 is opened in left and right, is communicated with respectively with regenerator 10 and pulse tube 11; Pulse tube 11 inserts in cool end heat exchanger 12 and is welded to connect from upper and lower is vertical with one heart respectively with regenerator 10; On pulse tube 11 tops, pulse tube hot end heat exchanger 7 is set, pulse tube 11 inserts pulse tube hot end heat exchanger 7 inside and is welded to connect from lower vertical; Pulse tube hot end heat exchanger 7 is a special-shaped composite construction, its underpart be one from inside the cylindrical slot heat exchanging body 35 of intensive cutting slit, top is the connection headkerchief 43 that intercommunicating pore 42 is opened in an inside, cylindrical slot heat exchanging body 35 be connected headkerchief 43 and weld together composition pulse tube hot end heat exchanger 7, one end and the brace table plane 25 of lifting support 29 are connected and fixed, and 7 of other end paired pulses pipe hot end heat exchangers are lifted supporting role; One end of pulse tube connecting leg 14 is connected with pulse tube hot end heat exchanger 7, and be communicated with pulse tube 11 by the intercommunicating pore 42 in pulse tube hot end heat exchanger 7 and cylindrical slot heat exchanging body 35, the other end of pulse tube connecting leg 14, through upper brace table through hole 40, is then communicated with inertia tube import 30; Inertia tube 15 closely coils on compressor right casing 6, and inertia tube outlet 31 is connected with air reservoir air inlet 32; Air reservoir 16 is the hollow sealed volume that an interior ring diameter is slightly larger than compressor right casing 6 external diameters, and air reservoir inner ring surface 33 is held on compressor right casing 6; Working gas is reciprocating vibration in the confined space being made up of compressor abnormity pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor, compressor right casing 6, main heat exchanger 8, inferior heat exchanger 9, regenerator 10, pulse tube 11, cool end heat exchanger 12, pulse tube hot end heat exchanger 7, pulse tube connecting leg 14, inertia tube 15 and air reservoir 16; Protective cover 17 is the case of one end sealing, and side, upper right 34 seal weldings of its openend and compressor abnormity pedestal 3, cover in inertia tube 15, air reservoir 16 and compressor right casing 6 wherein.Thereby jointly form a kind of close-coupled inertia cast high frequency linear pulse tube refrigerating machine.
Below in conjunction with accompanying drawing, the manufacture method of invented close-coupled inertia cast high frequency linear pulse tube refrigerating machine is described as follows:
Fig. 2 is the section plan of invented close-coupled inertia cast high frequency linear pulse tube refrigerating machine; Fig. 3 is the schematic perspective view of time pedestal 2; Fig. 4 (1) and Fig. 4 (2) are respectively section plan and the schematic perspective view of compressor abnormity pedestal 3; Fig. 5 is the assembled sectional view of regenerator 10, pulse tube 11, cool end heat exchanger 12 and pulse tube hot end heat exchanger 7; Fig. 6 is the schematic perspective view of vacuum (-tight) housing 13; Fig. 7 is the schematic perspective view of inertia tube 15; Fig. 8 is the schematic perspective view of 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 is all used fine turning lathe, milling machine and grinding machine processing to ensure between 1.0～5.0 μ m, dull and stereotyped horizontal positioned, carries out vertical support to total; Inferior pedestal 2 is made by high-thermal conductive metal material, the flatness of inferior pedestal lower surface 18 is used fine turning lathe, milling machine and grinding machine processing to ensure between 1.0～5.0 μ m, inferior pedestal upper left supports cambered surface 20 and the method processing that cambered surface 21 is all used the silk thread of being careful to cut is supported in inferior pedestal upper right, matches respectively with the shell surface cambered surface of the left outside shell 5 of compressor and protective cover 17; Compressor abnormity pedestal 3 adopts high thermal conductivity and high-intensity metal material to make, its upside adopts precise numerical control machine to process brace table 24 on compressor, on compressor, the upper surface of brace table 24 uses fine turning lathe, milling machine and grinding machine to process brace table plane 25, ensure that the flatness of brace table plane 25 itself is between 3.0～5.0 μ m, and the depth of parallelism between brace table plane 25 and main basal base 1 remains between 2.0～3.0 μ m; On compressor, on brace table 24, use drilling machine to process brace table through hole 40; The left outside shell 5 of compressor and compressor right casing 6 all adopt high-intensity metal material to make, wherein the side, pedestal lower-left 26 of the openend of the left outside shell 5 of compressor and compressor abnormity pedestal 3 adopts electron beam technology seal welding, and the pedestal lower right sides 27 of the openend of compressor right casing 6 and compressor abnormity pedestal 3 adopts electron beam technology seal welding; The funnel under shed 44 in the infundibulate duct 28 in compressor venthole 22 and inferior heat exchanger 9 all uses wire cutting method cutting to form, ensure that compressor venthole 22 is all identical with the aperture of funnel under shed 44, worst error is no more than 5.0 μ m, and while ensureing to connect, point-blank, worst error is no more than 10.0 μ m to the hole heart of compressor venthole 22 and funnel under shed 44; Realize being communicated with between the compression chamber 23 of opposed type linear compressor and regenerator 10 by compressor venthole 22 and infundibulate duct 28; Pulse tube 11 adopts the stainless steel of low heat conductivity or titanium alloy material to make, and adopts slow wire feeding wire cutting method to process, and inwall grinding and polishing ensures that inwall fineness is better than 0.5 μ m; Regenerator 10 is made up of cold accumulator 37 and the disc cold-storage filler 38 that is filled in cold accumulator 37 inside, wherein cold accumulator 37 adopts the stainless steel of low heat conductivity or titanium alloy material to make, adopt slow wire feeding wire cutting method to process, inwall grinding and polishing, ensure that inwall fineness is better than 2.0 μ m, disc cold-storage filler 38 is formed by silk screen or the tight filling of sphere of high specific heat; Main heat exchanger 8 and time heat exchanger 9 all adopt high-purity oxygenless copper material of high thermal conductivity to make, wherein the inner slow wire feeding line cutting technology that uses of main heat exchanger 8 is processed into a hollow structure, inferior heat exchanger 9 inserts in main heat exchanger 8 with one heart from bottom, and the joint face between the two uses Vacuum Soldering Technology welding; Fitting closely with brace table plane 25 in inferior heat exchanger lower surface 45, uses bolt to connect between the two; In inferior heat exchanger 9, concentric position vertical with regenerator 10 used precision machine tool to process infundibulate duct 28, and inwall grinding and polishing, makes its surface smoothness all higher than 0.01mm; Within main heat exchanger 8 is inserted with one heart from top in the lower end of regenerator 10, insertion depth remains between 2.0～4.0mm, and the contact-making surface that inserts position all uses Vacuum Soldering Technology welding; Cool end heat exchanger 12 adopts the oxygenless copper material of high thermal conductivity to make, be arranged between regenerator 10 and pulse tube 11, its outside is square structure, adopt slow wire feeding wire-electrode cutting and processing method to open tapered slot hole 41 at the middle part of square structure, be communicated with pulse tube 11 and regenerator 10, the two ends up and down of cool end heat exchanger 12 adopt Vacuum Soldering Technology to be welded to connect with the tube wall of pulse tube 11 and regenerator 10 respectively; Lifting support 29 adopts the metal material processing of higher-strengths to form, its lower end is supported on brace table plane 25 and is connected and fixed, 7 of upper end paired pulses pipe hot end heat exchangers are lifted supporting role, lift support 29 two ends up and down all adopt Vacuum Soldering Technology respectively with pulse tube hot end heat exchanger 7 and compressor on brace table 24 be welded to connect; Vacuum (-tight) housing 13 adopts stainless steel material to use precise numerical control machine to process, its one end sealing, openend anchor ring 43 is connected by bolt and the seal with elastometic washer of " O " type with the upper surface of main heat exchanger 8, and the inner vacuum molecular pump that uses of vacuum (-tight) housing 13 keeps being better than 3.0 × 10
-5the vacuum of Pa; Pulse tube connecting leg 14 adopts the pure copper tube of internal diameter 1.0～10.0mm to be made, intercommunicating pore 42 in its one end and pulse tube hot end heat exchanger 7 uses Vacuum Soldering Technology to weld together, the other end of pulse tube connecting leg 14, through upper brace table through hole 40, then uses Vacuum Soldering Technology and inertia tube import 30 to weld together; Inertia tube 15 adopts single hop or multistage long and thin metal copper pipe to make, and then closely coils on compressor right casing 6, and inertia tube outlet 31 is used Vacuum Soldering Technology to weld together with air reservoir air inlet 32; Air reservoir 16 adopts the flexible metal material of high thermal conductivity to make, use precise numerical control machine and Vacuum Soldering Technology to be made into that an interior ring diameter is slightly larger than compressor right casing 6 external diameters and outer ring diameter is slightly less than the hollow sealed volume of protective cover 17 internal diameters, the interior ring of air reservoir 16 is closely buckled on compressor right casing 6; Protective cover 17 adopts the metal material of high thermal conductivity to make, use precise numerical control machine to be processed into the housing of one end sealing, the side, upper right 34 of the openend of protective cover 17 and compressor abnormity pedestal 3 adopts electron beam technology seal welding, and inertia tube 15, air reservoir 16 and compressor right casing 6 are covered in wherein;
The manufacture method of the close-coupled inertia cast high frequency linear pulse tube refrigerating machine of inventing; the left outside shell 5 of compressor and compressor right casing 6 are about central axis 36 symmetries; the phase modulating mechanism being made up of inertia tube 15, air reservoir 16 and protective cover 17 both can be coupled on compressor right casing 6, also can be coupled on the left outside shell 5 of compressor.
The invention has the advantages that the design feature that has fully adapted to straight pulse pipe refrigeration machine, inertia tube phase modulation apparatus and linear compressor, realize the compactedness of total system and highly reliable, practical significant to straight pulse pipe refrigeration machine at special dimensions such as Aero-Space.
Brief description of the drawings
Fig. 1 is the routine combination schematic diagram of the inertia cast high frequency pulse tube cooler of the linear compressor driving of three kinds of exemplary configurations forms, and wherein: (1) is U-shaped, (2) are coaxial type, and (3) are linear pattern.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 is the section plan of invented close-coupled inertia cast high frequency linear pulse tube refrigerating machine, wherein 1 is main basal base, 2 is time pedestal, 3 is compressor abnormity pedestal, 4 is opposed type linear compressor main member, 5 is the left outside shell of compressor, 6 is compressor right casing, 7 is compressor connecting leg, 8 is main heat exchanger, 9 is time heat exchanger, 10 is regenerator, 11 is pulse tube, 12 is cool end heat exchanger, 13 is vacuum (-tight) housing, 14 is pulse tube connecting leg, 15 is inertia tube, 16 is air reservoir, 17 is protective cover, 18 is time pedestal lower surface, 19 is main basal base upper surface, 22 is compressor venthole, 23 is compression chamber, 29 for lifting support, axis centered by 36,
Fig. 3 is the schematic perspective view of time pedestal 2, and wherein 20 is that cambered surface is supported in time pedestal upper left, and 21 is that cambered surface is supported in time pedestal upper right;
Fig. 4 (1) and Fig. 4 (2) are respectively section plan and the schematic perspective view of compressor abnormity pedestal 3, and wherein 24 is brace table on compressor, and 25 is brace table plane, 26 is side, pedestal lower-left, 27 is pedestal lower right sides, and 34 is side, upper right, and 40 is upper brace table through hole;
Fig. 5 is the assembled sectional view of regenerator 10, pulse tube 11, cool end heat exchanger 12 and pulse tube hot end heat exchanger 7,28 is infundibulate duct, 35 is cylindrical slot heat exchanging body, 37 is cold accumulator, and 38 is cold-storage filler, and 41 is tapered slot hole, 42 is intercommunicating pore, 43 for connecting headkerchief, and 44 is funnel under shed, and 45 is time heat exchanger lower surface;
Fig. 6 is the schematic perspective view of vacuum (-tight) housing 13, and wherein 43 is openend anchor ring;
Fig. 7 is the schematic perspective view of inertia tube 15, and wherein 30 is inertia tube import, and 31 is inertia tube outlet;
Fig. 8 is the schematic perspective view of air reservoir 16, and wherein 32 is air reservoir air inlet, and 33 is 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 is the section plan of invented close-coupled inertia cast high frequency linear pulse tube refrigerating machine; Fig. 3 is the schematic perspective view of time pedestal 2; Fig. 4 (1) and Fig. 4 (2) are respectively section plan and the schematic perspective view of compressor abnormity pedestal 3; Fig. 5 is the assembled sectional view of regenerator 10, pulse tube 11, cool end heat exchanger 12 and pulse tube hot end heat exchanger 7; Fig. 6 is the schematic perspective view of vacuum (-tight) housing 13; Fig. 7 is the schematic perspective view of inertia tube 15; Fig. 8 is the schematic perspective view of air reservoir 16;
The close-coupled inertia cast high frequency linear pulse tube refrigerating machine of inventing by main basal base 1, inferior pedestal 2, compressor abnormity pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor, compressor right casing 6, pulse tube hot end heat exchanger 7, main heat exchanger 8, inferior heat exchanger 9, regenerator 10, pulse tube 11, cool end heat exchanger 12, vacuum (-tight) housing 13, pulse tube connecting leg 14, inertia tube 15, air reservoir 16, protective cover 17, lift and support 29 and form, it is characterized in that, main basal base 1 is as total supporting base of total; The lower end of inferior pedestal 2 processes time pedestal lower surface 18, and be supported on main basal base upper surface 19, the upper end of inferior pedestal 2 processes respectively time pedestal upper left and supports cambered surface 20 and inferior pedestal upper right support cambered surface 21, is supported in respectively the shell surface downside of the left outside shell 5 of compressor and protective cover 17; Compressor abnormity pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor and compressor right casing 6 form an opposed type linear compressor; This compressor adopts double-piston opposed formula structure, and left and right two parts are along central axis 36 full symmetrics; Vertically open compressor venthole 22 in compressor abnormity pedestal 3 center upper portion, realize the connection between compression chamber 23 and the infundibulate duct 28 of opposed type linear compressor by compressor venthole 22; Upside at compressor abnormity pedestal 3 processes brace table 24 on a compressor, and on compressor, brace table 24 carries out vertical support by brace table plane 25 to main heat exchanger 8, and the while is as the main radiator structure in straight pulse pipe refrigeration machine hot junction; On compressor, on brace table 24, process brace table through hole 40; Side, pedestal lower-left 26 seal weldings of the openend of the left outside shell 5 of compressor and compressor abnormity pedestal 3, pedestal lower right sides 27 seal weldings of the openend of compressor right casing 6 and compressor abnormity pedestal 3; Within inferior heat exchanger 9 inserts main heat exchanger 8 with one heart from bottom and be welded to connect; Compressor venthole 22 is directly connected on time heat exchanger 11, and is realized and being communicated with regenerator 10 by the infundibulate duct 28 in inferior heat exchanger 11; Within regenerator 10 inserts main heat exchanger 8 with one heart from top and be welded to connect; Cool end heat exchanger 12 is arranged at the junction of regenerator 10 and pulse tube 11, and cool end heat exchanger 12 is logical structure in a square, and tapered slot hole 41 is opened in left and right, is communicated with respectively with regenerator 10 and pulse tube 11; Pulse tube 11 inserts in cool end heat exchanger 12 and is welded to connect from upper and lower is vertical with one heart respectively with regenerator 10; On pulse tube 11 tops, pulse tube hot end heat exchanger 7 is set, pulse tube 11 inserts pulse tube hot end heat exchanger 7 inside and is welded to connect from lower vertical; Pulse tube hot end heat exchanger 7 is a special-shaped composite construction, its underpart be one from inside the cylindrical slot heat exchanging body 35 of intensive cutting slit, top is the connection headkerchief 43 that intercommunicating pore 42 is opened in an inside, cylindrical slot heat exchanging body 35 be connected headkerchief 43 and weld together composition pulse tube hot end heat exchanger 7, one end and the brace table plane 25 of lifting support 29 are connected and fixed, and 7 of other end paired pulses pipe hot end heat exchangers are lifted supporting role; One end of pulse tube connecting leg 14 is connected with pulse tube hot end heat exchanger 7, and be communicated with pulse tube 11 by the intercommunicating pore 42 in pulse tube hot end heat exchanger 7 and cylindrical slot heat exchanging body 35, the other end of pulse tube connecting leg 14, through upper brace table through hole 40, is then communicated with inertia tube import 30; Inertia tube 15 closely coils on compressor right casing 6, and inertia tube outlet 31 is connected with air reservoir air inlet 32; Air reservoir 16 is the hollow sealed volume that an interior ring diameter is slightly larger than compressor right casing 6 external diameters, and air reservoir inner ring surface 33 is held on compressor right casing 6; Working gas is reciprocating vibration in the confined space being made up of compressor abnormity pedestal 3, opposed type linear compressor main member 4, the left outside shell 5 of compressor, compressor right casing 6, main heat exchanger 8, inferior heat exchanger 9, regenerator 10, pulse tube 11, cool end heat exchanger 12, pulse tube hot end heat exchanger 7, pulse tube connecting leg 14, inertia tube 15 and air reservoir 16; Protective cover 17 is the case of one end sealing, and side, upper right 34 seal weldings of its openend and compressor abnormity pedestal 3, cover in inertia tube 15, air reservoir 16 and compressor right casing 6 wherein.Thereby jointly form a kind of close-coupled inertia cast high frequency linear pulse tube refrigerating machine.
The close-coupled inertia cast high frequency linear pulse tube refrigerating machine of inventing can be produced as follows: the high thermal conductivity metal plate that main basal base 1 is 25mm by thickness is made, the flatness of dull and stereotyped upper and lower surface is all used fine turning lathe, milling machine and grinding machine processing to ensure to be 4.0 μ m, dull and stereotyped horizontal positioned, carries out vertical support to total; Inferior pedestal 2 is made by high-thermal conductive metal material, the flatness of inferior pedestal lower surface 18 is used fine turning lathe, milling machine and grinding machine processing to ensure to be 3.0 μ m, inferior pedestal upper left supports cambered surface 20 and the method processing that cambered surface 21 is all used the silk thread of being careful to cut is supported in inferior pedestal upper right, matches respectively with the shell surface cambered surface of the left outside shell 5 of compressor and protective cover 17; Compressor abnormity pedestal 3 adopts high thermal conductivity and high-intensity metal material to make, its upside adopts precise numerical control machine to process brace table 24 on compressor, on compressor, the upper surface of brace table 24 uses fine turning lathe, milling machine and grinding machine to process brace table plane 25, the flatnesses that ensure brace table plane 25 itself are 4.0 μ m, and the depth of parallelism between brace table plane 25 and main basal base 1 remains 2.5 μ m; On compressor, on brace table 24, use drilling machine to process brace table through hole 40; The left outside shell 5 of compressor and compressor right casing 6 all adopt high-intensity metal material to make, wherein the side, pedestal lower-left 26 of the openend of the left outside shell 5 of compressor and compressor abnormity pedestal 3 adopts electron beam technology seal welding, and the pedestal lower right sides 27 of the openend of compressor right casing 6 and compressor abnormity pedestal 3 adopts electron beam technology seal welding; The funnel under shed 44 in the infundibulate duct 28 in compressor venthole 22 and inferior heat exchanger 9 all uses wire cutting method cutting to form, ensure that compressor venthole 22 is all identical with the aperture of funnel under shed 44, worst error is no more than 5.0 μ m, and while ensureing to connect, point-blank, worst error is no more than 10.0 μ m to the hole heart of compressor venthole 22 and funnel under shed 44; Realize being communicated with between the compression chamber 23 of opposed type linear compressor and regenerator 10 by compressor venthole 22 and infundibulate duct 28; Pulse tube 11 adopts the stainless steel of low heat conductivity or titanium alloy material to make, and adopts slow wire feeding wire cutting method to process, and inwall grinding and polishing ensures that inwall fineness is better than 0.5 μ m; Regenerator 10 is made up of cold accumulator 37 and the disc cold-storage filler 38 that is filled in cold accumulator 37 inside, wherein cold accumulator 37 adopts the stainless steel of low heat conductivity or titanium alloy material to make, adopt slow wire feeding wire cutting method to process, inwall grinding and polishing, ensure that inwall fineness is better than 2.0 μ m, disc cold-storage filler 38 is formed by silk screen or the tight filling of sphere of high specific heat; Main heat exchanger 8 and time heat exchanger 9 all adopt high-purity oxygenless copper material of high thermal conductivity to make, wherein the inner slow wire feeding line cutting technology that uses of main heat exchanger 8 is processed into a hollow structure, inferior heat exchanger 9 inserts in main heat exchanger 8 with one heart from bottom, and the joint face between the two uses Vacuum Soldering Technology welding; Fitting closely with brace table plane 25 in inferior heat exchanger lower surface 45, uses bolt to connect between the two; In inferior heat exchanger 9, concentric position vertical with regenerator 10 used precision machine tool to process infundibulate duct 28, and inwall grinding and polishing, makes its surface smoothness all higher than 0.01mm; Within main heat exchanger 8 is inserted with one heart from top in the lower end of regenerator 10, insertion depth remains 3.0mm, and the contact-making surface that inserts position all uses Vacuum Soldering Technology welding; Cool end heat exchanger 12 adopts the oxygenless copper material of high thermal conductivity to make, be arranged between regenerator 10 and pulse tube 11, its outside is square structure, adopt slow wire feeding wire-electrode cutting and processing method to open tapered slot hole 41 at the middle part of square structure, be communicated with pulse tube 11 and regenerator 10, the two ends up and down of cool end heat exchanger 12 adopt Vacuum Soldering Technology to be welded to connect with the tube wall of pulse tube 11 and regenerator 10 respectively; Lifting support 29 adopts the metal material processing of higher-strengths to form, its lower end is supported on brace table plane 25 and is connected and fixed, 7 of upper end paired pulses pipe hot end heat exchangers are lifted supporting role, lift support 29 two ends up and down all adopt Vacuum Soldering Technology respectively with pulse tube hot end heat exchanger 7 and compressor on brace table 24 be welded to connect; Vacuum (-tight) housing 13 adopts stainless steel material to use precise numerical control machine to process, its one end sealing, openend anchor ring 43 is connected by bolt and the seal with elastometic washer of " O " type with the upper surface of main heat exchanger 8, and the inner vacuum molecular pump that uses of vacuum (-tight) housing 13 keeps being better than 3.0 × 10
-5the vacuum of Pa; Pulse tube connecting leg 14 adopts the pure copper tube of internal diameter 2.0～8.0mm to be made, intercommunicating pore 42 in its one end and pulse tube hot end heat exchanger 7 uses Vacuum Soldering Technology to weld together, the other end of pulse tube connecting leg 14, through upper brace table through hole 40, then uses Vacuum Soldering Technology and inertia tube import 30 to weld together; Inertia tube 15 adopts single hop or multistage long and thin metal copper pipe to make, and then closely coils on compressor right casing 6, and inertia tube outlet 31 is used Vacuum Soldering Technology to weld together with air reservoir air inlet 32; Air reservoir 16 adopts the flexible metal material of high thermal conductivity to make, use precise numerical control machine and Vacuum Soldering Technology to be made into that an interior ring diameter is slightly larger than compressor right casing 6 external diameters and outer ring diameter is slightly less than the hollow sealed volume of protective cover 17 internal diameters, the interior ring of air reservoir 16 is closely buckled on compressor right casing 6; Protective cover 17 adopts the metal material of high thermal conductivity to make, use precise numerical control machine to be processed into the housing of one end sealing, the side, upper right 34 of the openend of protective cover 17 and compressor abnormity pedestal 3 adopts electron beam technology seal welding, and inertia tube 15, air reservoir 16 and compressor right casing 6 are covered in wherein;
The manufacture method of the close-coupled inertia cast high frequency linear pulse tube refrigerating machine of inventing; the left outside shell 5 of compressor and compressor right casing 6 are about central axis 36 symmetries; the phase modulating mechanism being made up of inertia tube 15, air reservoir 16 and protective cover 17 both can be coupled on compressor right casing 6, also can be coupled on the left outside shell 5 of compressor.
Claims (3)
1. a close-coupled inertia cast high frequency linear pulse tube refrigerating machine, comprise main basal base (1), inferior pedestal (2), compressor abnormity pedestal (3), opposed type linear compressor main member (4), the left outside shell of compressor (5), compressor right casing (6), pulse tube hot end heat exchanger (7), main heat exchanger (8), inferior heat exchanger (9), regenerator (10), pulse tube (11), cool end heat exchanger (12), vacuum (-tight) housing (13), pulse tube connecting leg (14), inertia tube (15), air reservoir (16), protective cover (17) and lift support (29), it is characterized in that, main basal base (1) is as total supporting base of total, the lower end of inferior pedestal (2) processes time pedestal lower surface (18), and be supported on main basal base upper surface (19), the upper end of inferior pedestal (2) processes respectively time pedestal upper left and supports cambered surface (20) and inferior pedestal upper right support cambered surface (21), is supported in respectively the shell surface downside of the left outside shell of compressor (5) and protective cover (17), compressor abnormity pedestal (3), opposed type linear compressor main member (4), the left outside shell of compressor (5) and compressor right casing (6) form an opposed type linear compressor, this compressor adopts double-piston opposed formula structure, and left and right two parts are along central axis (36) full symmetric, vertically open compressor venthole (22) in compressor abnormity pedestal (3) center upper portion, realize the connection between compression chamber (23) and infundibulate duct (28) of opposed type linear compressor by compressor venthole (22), upside at compressor abnormity pedestal (3) processes brace table (24) on a compressor, brace table on compressor (24) carries out vertical support by brace table plane (25) to main heat exchanger (8), and the while is as the main radiator structure in coaxial impulse pipe refrigerating machine hot junction, on brace table on compressor (24), process upper brace table through hole (40), side, pedestal lower-left (26) seal welding of the openend of the left outside shell of compressor (5) and compressor abnormity pedestal (3), pedestal lower right sides (27) seal welding of the openend of compressor right casing (6) and compressor abnormity pedestal (3), within inferior heat exchanger (9) inserts main heat exchanger (8) with one heart from bottom and be welded to connect, it is upper that compressor venthole (22) is directly connected to time heat exchanger (11), and realized and being communicated with regenerator (10) by the infundibulate duct (28) in time heat exchanger (11), within regenerator (10) inserts main heat exchanger (8) with one heart from top and be welded to connect, cool end heat exchanger (12) is arranged at the junction of regenerator (10) and pulse tube (11), and cool end heat exchanger (12) is logical structure in a square, and tapered slot hole (41) is opened in left and right, is communicated with respectively with regenerator (10) and pulse tube (11), pulse tube (11) inserts in cool end heat exchanger (12) and is welded to connect from upper and lower is vertical with one heart respectively with regenerator (10), on pulse tube (11) top, pulse tube hot end heat exchanger (7) is set, pulse tube (11) inserts pulse tube hot end heat exchanger (7) inside and is welded to connect from lower vertical, pulse tube hot end heat exchanger (7) is a special-shaped composite construction, its underpart be one from inside the cylindrical slot heat exchanging body (35) of intensive cutting slit, top is the connection headkerchief (43) that intercommunicating pore (42) is opened in an inside, cylindrical slot heat exchanging body (35) be connected headkerchief (43) weld together composition pulse tube hot end heat exchanger (7), one end and the brace table plane (25) of lifting support (29) are connected and fixed, and other end paired pulses pipe hot end heat exchanger (7) rises lifts supporting role, one end of pulse tube connecting leg (14) is connected with pulse tube hot end heat exchanger (7), and be communicated with pulse tube (11) by intercommunicating pore (42) and cylindrical slot heat exchanging body (35) in pulse tube hot end heat exchanger (7), the other end of pulse tube connecting leg (14), through upper brace table through hole (40), is then communicated with inertia tube import (30), inertia tube (15) closely coils on compressor right casing (6), and inertia tube outlet (31) is connected with air reservoir air inlet (32), air reservoir (16) is the hollow sealed volume that an interior ring diameter is slightly larger than compressor right casing (6) external diameter, and air reservoir inner ring surface (33) is held on compressor right casing (6), working gas is reciprocating vibration in the confined space being made up of compressor abnormity pedestal (3), opposed type linear compressor main member (4), the left outside shell of compressor (5), compressor right casing (6), main heat exchanger (8), inferior heat exchanger (9), regenerator (10), pulse tube (11), cool end heat exchanger (12), pulse tube hot end heat exchanger (7), pulse tube connecting leg (14), inertia tube (15) and air reservoir (16), protective cover (17) is the case of one end sealing, and side, upper right (34) seal welding of its openend and compressor abnormity pedestal (3), covers in inertia tube (15), air reservoir (16) and compressor right casing (6) wherein, thereby jointly form a kind of close-coupled inertia cast high frequency linear pulse tube refrigerating machine.
2. the manufacture method of a close-coupled inertia cast high frequency linear type pulse tube refrigerating machine as claimed in claim 1, 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 is all used fine turning lathe, milling machine and grinding machine processing to ensure between 1.0～5.0 μ m, dull and stereotyped horizontal positioned, carries out vertical support to total; Inferior pedestal (2) is made by high-thermal conductive metal material, the flatness of inferior pedestal lower surface (18) is used fine turning lathe, milling machine and grinding machine processing to ensure between 1.0～5.0 μ m, inferior pedestal upper left supports cambered surface (20) and the method processing that cambered surface (21) is all used the silk thread of being careful to cut is supported in inferior pedestal upper right, matches respectively with the shell surface cambered surface of the left outside shell of compressor (5) and protective cover (17); Compressor abnormity pedestal (3) adopts high thermal conductivity and high-intensity metal material to make, its upside adopts precise numerical control machine to process brace table on compressor (24), the upper surface of brace table on compressor (24) uses fine turning lathe, milling machine and grinding machine to process brace table plane (25), ensure that flatness of brace table plane (25) itself is between 3.0～5.0 μ m, and the depth of parallelism between brace table plane (25) and main basal base (1) remains between 2.0～3.0 μ m; The upper drilling machine that uses of brace table on compressor (24) processes upper brace table through hole (40); The left outside shell of compressor (5) and compressor right casing (6) all adopt high-intensity metal material to make, wherein the side, pedestal lower-left (26) of the openend of the left outside shell of compressor (5) and compressor abnormity pedestal (3) adopts electron beam technology seal welding, and the pedestal lower right sides (27) of the openend of compressor right casing (6) and compressor abnormity pedestal (3) adopts electron beam technology seal welding; The funnel under shed (44) in the infundibulate duct (28) in compressor venthole (22) and inferior heat exchanger (9) all uses wire cutting method cutting to form, ensure that compressor venthole (22) is all identical with the aperture of funnel under shed (44), worst error is no more than 5.0 μ m, and while ensureing to connect, point-blank, worst error is no more than 10.0 μ m to the hole heart of compressor venthole (22) and funnel under shed (44); Realize being communicated with between the compression chamber (23) of opposed type linear compressor and regenerator (10) by compressor venthole (22) and infundibulate duct (28); Pulse tube (11) adopts the stainless steel of low heat conductivity or titanium alloy material to make, and adopts slow wire feeding wire cutting method to process, and inwall grinding and polishing ensures that inwall fineness is better than 0.5 μ m; Regenerator (10) is by cold accumulator (37) and be filled in the inner disc cold-storage filler (38) of cold accumulator (37) and form, wherein cold accumulator (37) adopts the stainless steel of low heat conductivity or titanium alloy material to make, adopt slow wire feeding wire cutting method to process, inwall grinding and polishing, ensure that inwall fineness is better than 2.0 μ m, disc cold-storage filler (38) is formed by silk screen or the tight filling of sphere of high specific heat; Main heat exchanger (8) and time heat exchanger (9) all adopt high-purity oxygenless copper material of high thermal conductivity to make, wherein the inner slow wire feeding line cutting technology that uses of main heat exchanger (8) is processed into a hollow structure, inferior heat exchanger (9) inserts in main heat exchanger (8) with one heart from bottom, and the joint face between the two uses Vacuum Soldering Technology welding; Fitting closely with brace table plane (25) in inferior heat exchanger lower surface (45), uses bolt to connect between the two; In inferior heat exchanger (9), concentric position vertical with regenerator (10) used precision machine tool to process infundibulate duct (28), and inwall grinding and polishing, makes its surface smoothness all higher than 0.01mm; Within main heat exchanger (8) is inserted with one heart from top in the lower end of regenerator (10), insertion depth remains between 2.0～4.0mm, and the contact-making surface that inserts position all uses Vacuum Soldering Technology welding; Cool end heat exchanger (12) adopts the oxygenless copper material of high thermal conductivity to make, be arranged between regenerator (10) and pulse tube (11), its outside is square structure, adopt slow wire feeding wire-electrode cutting and processing method to open tapered slot hole (41) at the middle part of square structure, be communicated with pulse tube (11) and regenerator (10), the two ends up and down of cool end heat exchanger (12) adopt Vacuum Soldering Technology to be welded to connect with the tube wall of pulse tube (11) and regenerator (10) respectively; Lifting support (29) adopts the metal material processing of higher-strength to form, its lower end is supported on brace table plane (25) and is connected and fixed, upper end paired pulses pipe hot end heat exchanger (7) rises and lifts supporting role, the two ends up and down of lifting support (29) all adopt Vacuum Soldering Technology respectively with pulse tube hot end heat exchanger (7) and compressor on brace table (24) be welded to connect; Vacuum (-tight) housing (13) adopts stainless steel material to use precise numerical control machine to process, its one end sealing, openend anchor ring (43) is connected by bolt and the seal with elastometic washer of " O " type with the upper surface of main heat exchanger (8), and the inner vacuum molecular pump that uses of vacuum (-tight) housing (13) keeps being better than 3.0 × 10
-5the vacuum of Pa; Pulse tube connecting leg (14) adopts the pure copper tube of internal diameter 1.0～10.0mm to be made, intercommunicating pore (42) in its one end and pulse tube hot end heat exchanger (7) uses Vacuum Soldering Technology to weld together, the other end of pulse tube connecting leg (14), through upper brace table through hole (40), then uses Vacuum Soldering Technology and inertia tube import (30) to weld together; Inertia tube (15) adopts single hop or multistage long and thin metal copper pipe to make, and then closely coils on compressor right casing (6), and inertia tube outlet (31) is used Vacuum Soldering Technology to weld together with air reservoir air inlet (32); Air reservoir (16) adopts the flexible metal material of high thermal conductivity to make, use precise numerical control machine and Vacuum Soldering Technology to be made into that an interior ring diameter is slightly larger than compressor right casing (6) external diameter and outer ring diameter is slightly less than the hollow sealed volume of protective cover (17) internal diameter, the interior ring of air reservoir (16) is closely buckled on compressor right casing (6); Protective cover (17) adopts the metal material of high thermal conductivity to make; use precise numerical control machine to be processed into the housing of one end sealing; the side, upper right (34) of the openend of protective cover (17) and compressor abnormity pedestal (3) adopts electron beam technology seal welding, and inertia tube (15), air reservoir (16) and compressor right casing (6) are covered in wherein.
3. a kind of close-coupled inertia cast high frequency linear pulse tube refrigerating machine according to claim 1; it is characterized in that; the phase modulating mechanism being made up of described inertia tube (15), air reservoir (16) and protective cover (17) is upper outside except being coupling in compressor right casing (6), can also be coupled on the left outside shell of compressor (5).
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Effective date of registration: 20230914 Address after: 1155 Liuxiang Road, Nanxiang Town, Jiading District, Shanghai, 201802 Patentee after: Shanghai Platinum-indigo Refrigeration Technology Co.,Ltd. Address before: 200083 No. 500, Yutian Road, Shanghai, Hongkou District Patentee before: SHANGHAI INSTITUTE OF TECHNICAL PHYSICS, CHINESE ACADEMY OF SCIENCE |