CN203627132U - Oppositely-arranged moving coil linear compressor allowing radial magnetizing to be achieved through short coils - Google Patents
Oppositely-arranged moving coil linear compressor allowing radial magnetizing to be achieved through short coils Download PDFInfo
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- CN203627132U CN203627132U CN201320740948.1U CN201320740948U CN203627132U CN 203627132 U CN203627132 U CN 203627132U CN 201320740948 U CN201320740948 U CN 201320740948U CN 203627132 U CN203627132 U CN 203627132U
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Abstract
The utility model discloses an oppositely-arranged moving coil linear compressor allowing radial magnetizing to be achieved through short coils. The opposite arrangement method is adopted for the whole structure so that mechanical vibration of the left potion and mechanical vibration of the right portion can be offset. The left portion and the right portion share one machine base and are respectively composed of a cylinder lining, a permanent magnet, an upper yoke, a lower yoke, a current-carrying coil, a coil framework, a piston, an upper plate spring set, a lower plate spring set, an upper pressing piece structure, a lower pressing piece structure, an upper supporting structure, a lower supporting structure, a displacement sensor iron core, a displacement sensor coil, a displacement sensor support and a machine shell. Radial magnetizing is conducted on the permanent magnets. The short coils serve as the current-carrying coils. The upper yoke, the piston and the current-carrying coil of the left portion should meet the requirement that the axial thickness of the bottom of the lower yoke is larger than the sum of the axial height of the current-carrying coil and the maximum stroke of the piston. The upper yoke, the piston and the current-carrying coil of the right portion should meet the requirement that the the axial thickness of the bottom of the lower yoke is larger than the sum of the axial height of the current-carrying coil and the maximum stroke of the piston. The oppositely-arranged moving coil linear compressor is compact in structure, low in vibration, high in motor efficiency and long in expected service life, and has important significance in development of the linear compressor which is high in reliability, long in service life and high in efficiency.
Description
Technical field
This patent relates to linear compressor, particularly a kind of opposed type moving-coil linear compressor that adopts short coil radial magnetizing.
Background technique
Linear compressor is the one of reciprocating-piston compressor.Traditional reciprocating-piston compressor belongs to rotary compressor mostly, adopts electric rotating machine to drive, realizes to-and-fro motion by the mechanical transmission of connecting rod etc.The technology of rotary compressor is comparatively ripe, but its energy transmission link is many, vibration and noise large, complete machine control complexity, energy conversion efficiency is on the low side, the lateral force particularly because of structural feature, piston being applied, be one of main source producing idle work and mechanical wear, thereby greatly limited its operating life.Linear compressor utilizes linear electric motor driven plunger to do reciprocating linear motion in cylinder, eliminate in theory the radial effect power to piston completely, thereby eliminate mechanical wear and the consequent idle work between piston and cylinder wall, operating life and energy conversion efficiency all improve greatly, so have very important application at the special dimension such as Aeronautics and Astronautics, military affairs that needs long lifetime and efficiency operation.
The core component of linear compressor is linear electric motor.Linear electric motor are mainly divided three classes according to moving element wherein: moving-iron type, moving coil and moving-magnetic type.Moving-iron type linear motor does not use permanent magnet, thereby price is cheaper, but performance is relatively unstable, control more difficult, its application gradually reduce; Moving coil and moving-magnetic type linear motor all comprise three class core components: permanent magnet, yoke and current-carrying coil are that moving coil and moving-magnetic type are divided in current-carrying coil or permanent magnet motion during according to motion.Wherein, moving coil linear compressor has been realized the elimination completely of radial force because of its structural feature, and on current-carrying coil, do not produce axial force and moment of torsion in when open circuit, thereby there is high efficiency, low noise and highly reliable outstanding advantages, thereby become the first-selected power source of the interior space regenerating type low-temperature refrigerator (as pulse tube refrigerating machine and sterlin refrigerator) of international coverage over nearly 30 years.Western developed country take the U.S. as representative is example, and in the space flight pulse tube refrigerating machine and sterlin refrigerator launching between nearly 20 years, the overwhelming majority has adopted moving coil linear compressor.
At present, be applied in the world space industry and need to guarantee that long lifetime, moving coil linear compressor highly reliable, efficiency operation mainly adopt Oxford type and opposed type structural type.So-called Oxford type, it is gained the name and comes from two key technologies of Regius professor---and clearance seal and leaf spring support, and these two technology are oil-free lubrication and key guarantee that can long lifetime running; So-called opposed type structural type, refers to and in agent structure, adopts two motions of equity and supporting structure mechanical vibration that self produce of cancelling out each other completely, this technology is to realize the reliable guarantee of the low vibration of linear compressor.
As previously mentioned, dynamic coil linear motor comprises three class core components: permanent magnet, yoke and current-carrying coil.When work, current-carrying coil is in permanent magnet and the common air gap forming of yoke, and magnetic field force induced effect, becomes reciprocal straight line motion.According to the magnetizing direction of the length of current-carrying coil and permanent magnet, dynamic coil linear motor can be divided into four kinds, Fig. 1 has provided the schematic diagram of these four kinds of forms, and wherein (1) is long loop axial charging form, (2) be short coil axial charging form, (3) be long loop radial magnetizing form, (4) are short coil radial magnetizing form, and wherein 63 is permanent magnet, 64 is upper yoke, 65 is lower yoke, and 66 is current-carrying coil, through hole centered by 67.
The kind of the linear electric motor that moving coil linear compressor adopts according to it, also be correspondingly divided into four kinds of forms, that is: adopted the moving coil linear compressor of the moving coil linear compressor of long loop axial charging, the moving coil linear compressor that adopts short coil axial charging, the moving coil linear compressor that adopts long loop radial magnetizing, employing short coil radial magnetizing.No matter moving coil linear compressor adopts any in above-mentioned four kinds of forms, if guarantee its energy stable operation, all must follow following basic principle: (1) or be in whole piston stroke, guarantee all the time steady magnetic field be in current-carrying coil within (corresponding to long loop form); (2) or be in whole piston stroke, guarantee all the time current-carrying coil (corresponding to short coil form) within stable magnetic field.The moving coil linear compressor of these four kinds of forms development at home is at present all at the early-stage.
Summary of the invention
This patent proposes a kind of opposed type moving-coil linear compressor that adopts short coil radial magnetizing.
The opposed type moving-coil linear compressor of the employing short coil radial magnetizing of inventing is by sharing support 0, left part cylinder liner 1, left part permanent magnet 2, yoke 3 on left part, left part lower yoke 4, left part current-carrying coil 5, left part coil rack 6, left part piston 7, plate spring groups 8 on left part, plate spring groups 9 under left part, tabletting structure 10 on left part, left part lower sheeting structure 11, left part upper support structure 12, left part lower support structure 13, left part displacement transducer iron core 14, left part displacement transducer coil 15, left part displacement transducer supports 16, left part casing 17 and right part cylinder liner 1 ', right part permanent magnet 2 ', yoke 3 on right part ', right part lower yoke 4 ', right part current-carrying coil 5 ', right part coil rack 6 ', right part piston 7 ', plate spring groups 8 on right part ', plate spring groups 9 under right part ', tabletting structure 10 on right part ', right part lower sheeting structure 11 ', right part upper support structure 12 ', right part lower support structure 13 ', right part displacement transducer iron core 14 ', right part displacement transducer coil 15 ', right part displacement transducer support 16 ', right part casing 17 ' composition jointly, it is characterized in that, the mechanical vibration that overall structure adopts opposed type to produce to offset left and right two-part, take vertical center line 40 as symmetry axis, all parts of left part and structural configuration and right part corresponding part and structural configuration enantiotropy each other, horizontal axis 50 indications are shown axial direction, share support 0 by left part cylinder 41, right part cylinder 41 ' and shared air outlet hole 42 form, left part cylinder liner 1 interference fit is embedded in the inside of left part cylinder 41, right part cylinder liner 1 ' interference fit be embedded in right part cylinder 41 ' inside, left part permanent magnet 2 is cylinder-like structure, and central position is processed with left part magnet inner via hole 43 vertically, on left part, yoke 3 is cylinder-like structure, and its central position is processed with yoke inner via hole 44 on the left part that diameter is d vertically, and on left part, the external diameter of yoke 3 is than little 2.0～3.0 μ m of the diameter of left part magnet inner via hole 43, left part lower yoke 4 is U-shaped structure, the internal diameter of U-shaped body is than large 2.0～3.0 μ m of the external diameter of left part permanent magnet 2, central position in U-shaped body bottom is processed with left part lower yoke inner via hole 45 vertically, and the diameter of left part lower yoke inner via hole 45 is greater than the external diameter of yoke 3 on left part, left part permanent magnet 2 radially magnetizes to saturated, on left part, yoke 3 inserts left part magnet inner via hole 43 inside afterwards, left part lower yoke 4 wraps up yoke 3 on left part permanent magnet 2 and left part wherein, on left part, yoke left side 18 flushes with left part lower yoke left side 19, and on left part, yoke right side 20, left part permanent magnet right side 22 and left part lower yoke right side 27 threes flush, on left part permanent magnet inner ring surface 21 and left part, yoke outer ring surface 67 is close together, and left part magnet outer surface 68 is close together with left part lower yoke inner ring surface 23, yoke 3, the common left part ring-type air gap 46 that forms of left part lower yoke 4 on left part permanent magnet 2, left part, left part current-carrying coil 5 inserts in left part ring-type air gap 46 with one heart, right part permanent magnet 2 ', yoke 3 on right part ', right part lower yoke 4 ' jointly form right part ring-type air gap 46 ', right part current-carrying coil 5 ' insert with one heart right part ring-type air gap 46 ' in, left part current-carrying coil 5 and right part current-carrying coil 5 ' axial height be h, range when left part piston 7 and right part piston 7 ' work is s, left part lower yoke 4 is δ with the axial thickness of right part lower yoke 4 ' bottom, and meets relation: δ > s+h, to guarantee in whole piston stroke, guarantees that current-carrying coil is within stable magnetic field all the time, upper left supports right end face 24 is supported on left part lower yoke left side 19, and the two is by screw fastening, and ring plain 25 is processed in the left side of left part upper support structure 12, lower-left supports right end face 47 is supported in and shares on support left surface 48, and the two welds together, lower-left carries left leading flank 26 is supported on left part lower yoke right side 27, and the two is by screw fastening, and lower ring plain 28 is processed in the side, lower-left of left part lower support structure 13, on left part, plate spring groups 8 is formed by stacking by some single piece plate spring thin slices, form upper left group outer rim 29 in outer rim, form upper left group inner edge 30 at inner edge, being processed with vertically diameter in center portion is the upper left group spring body center hole 31 of d, wherein upper left group outer rim 29 is positioned on the upper ring plain 25 of left part upper support structure 12, and passes through screw fastening, under left part, plate spring groups 9 is formed by stacking by some single piece plate spring thin slices, form lower-left group outer rim 32 in outer rim, form lower-left group inner edge 33 at inner edge, being processed with vertically diameter in center portion is the lower-left group spring body center hole 34 of d, wherein lower-left group outer rim 32 is positioned on the lower ring plain 28 of left part lower support structure 13, and passes through screw fastening, left part piston 7 is made up of left part piston head 35, left part piston middle transition platform 36 and left part piston rod 37, be processed with the left bar thread section 49 of long 1～3mm at the end of left part piston rod 37, the external diameter of left part piston head 35, than little 10～30 μ m of internal diameter of left part cylinder 41, guarantees that the diameter of left part piston rod 37 is less than d simultaneously, left part piston rod 37 runs through yoke inner via hole 44 on lower-left group spring body center hole 34, left part lower yoke inner via hole 45, left part, upper left group spring body center hole 31 successively, on left part, tabletting structure 10 tightens together upper left group inner edge 30 and left part coil rack 6 with left part piston rod 37, left part lower sheeting structure 11 tightens together lower-left group inner edge 33 with left part piston middle transition platform 36, thereby guarantees on left part current-carrying coil 5, left part coil rack 6 and left part piston 7, left part under plate spring groups 8, left part that plate spring groups 9 is connected to the entirety that can simultaneously move, left part displacement transducer iron core 14 inside are processed with the left iron core thread section 51 matching with left bar thread section 49, and left bar thread section 49 screws in left iron core thread section 51 also fastening, outside left part displacement transducer iron core 14, arrange with left part displacement transducer and support the 16 left part displacement transducer coils 15 that tighten together, left part displacement transducer supports 16 and then be supported on left part upper support structure 12 also and tighten together with it, left part casing 17 is welded and fixed by left part casing exterior edge face 61 and support exterior edge face, lower-left 52, thereby form left part airtight cavity, by left part cylinder liner 1, left part permanent magnet 2, yoke 3 on left part, left part lower yoke 4, left part current-carrying coil 5, left part coil rack 6, left part piston 7, plate spring groups 8 on left part, plate spring groups 9 under left part, tabletting structure 10 on left part, left part lower sheeting structure 11, left part upper support structure 12, left part lower support structure 13, left part displacement transducer iron core 14, left part displacement transducer coil 15, left part displacement transducer supports 16, left part casing 17 all covers in wherein, the all parts of right part and structural configuration are left part corresponding part and the structural configuration enantiotropies about vertical center line 40, right part casing 17 ' by right part casing exterior edge face 61 ' with support exterior edge face, bottom right 52 ' be welded and fixed, form right part airtight cavity, by right part cylinder liner 1 ', right part permanent magnet 2 ', yoke 3 on right part ', right part lower yoke 4 ', right part current-carrying coil 5 ', right part coil rack 6 ', right part piston 7 ', plate spring groups 8 on right part ', plate spring groups 9 under right part ', tabletting structure 10 on right part ', right part lower sheeting structure 11 ', right part upper support structure 12 ', right part lower support structure 13 ', right part displacement transducer iron core 14 ', right part displacement transducer coil 15 ', right part displacement transducer support 16 ', right part casing 17 ' all cover in wherein, thereby form a kind of opposed type moving-coil linear compressor that adopts short coil radial magnetizing.
The manufacture method of the opposed type moving-coil linear compressor below in conjunction with accompanying drawing to invented employing short coil radial magnetizing is described as follows:
Fig. 2 is the section plan of the opposed type moving-coil linear compressor of invented employing short coil radial magnetizing; Take vertical center line 40 as symmetry axis each other all parts of left part of enantiotropy and right part corresponding part need adopt same batch of production part so that the difference between individuality minimize;
Fig. 3 is the three-dimensional cutaway view that shares support 0; Sharing support 0 adopts the titanium alloy material that mechanical strength is high, thermal expansion coefficient is little to make, adopt five-axis machine tool process simultaneously left part cylinder 41 and right part cylinder 41 ', assurance left part cylinder 41 and right part cylinder 41 ' about vertical center line 40 symmetries, and guarantee left part cylinder 41 and right part cylinder 41 ' coaxality be better than 1.0 μ m, guarantee that the endoporus circularity of above-mentioned two cylinders is all better than 0.5 μ m simultaneously; After left part cylinder 41 and right part cylinder 41 ' completion of processing, use same five-axis machine tool to process and share air outlet hole 42, guarantee to share air outlet hole 42 and left part cylinder 41 and right part cylinder 41 ' perpendicularity be all better than 2.0 μ m;
Fig. 4 is the three-dimensional cutaway view (for the left and right parts of enantiotropy each other, generally only provide the detailed maps of left part, and manufacturer's rule together being narrated left part and right part parts in accompanying drawing, lower same) of left part cylinder liner 1; left part cylinder liner 1 and right part cylinder liner 1 ' all adopt hardness is greater than 58 die steel material and uses the method for the silk thread cutting of being careful to be processed into cylindric, guarantee left part cylinder liner 1 and right part cylinder liner 1 ' external diameter respectively than left part cylinder 41 and right part cylinder 41 ' the large 0.5～1.0mm of internal diameter, then adopt interference fit and the mode of expanding with heat and contract with cold be inlaid into respectively left part cylinder 41 and right part cylinder 41 ' in, concrete method for embedding is as follows: it is homogeneous heating 4～6 hours in the heated at constant temperature case of 160 ℃ that shared support 0 entirety is as shown in Figure 3 positioned over to inside temperature, before shared support 0 takes out heated at constant temperature case 5～10 minutes, by left part cylinder liner 1 and right part cylinder liner 1 ' be positioned in liquid nitrogen and soak simultaneously, when shared support 0 takes out from heated at constant temperature case, by left part cylinder liner 1 and right part cylinder liner 1 ' take out from liquid nitrogen, then use mechanical external force by left part cylinder liner 1 and right part cylinder liner 1 ' push respectively left part cylinder 41 and right part cylinder 41 ' inside, thereby guarantee left part cylinder liner 1 and right part cylinder liner 1 ' outer wall respectively with left part cylinder 41 and right part cylinder 41 ' inwall combine closely, then use jig grinding machine to left part cylinder liner 1 and right part cylinder liner 1 ' endoporus carry out fine gtinding, guarantee that its endoporus circularity is all better than 0.5 μ m,
Fig. 5 is the section plan of left part piston 7; Left part piston 7 and right part piston 7 ' all adopt the titanium alloy material that mechanical strength is high, thermal expansion coefficient is little to make, first adopt numerical control machine tool to process blank, then adopt jig grinding machine to carry out fine gtinding, guarantee left part piston head 35 and right part piston head 35 ' circularity be all better than 0.5 μ m, and guarantee the beating lower than 3.0 μ m of left part piston rod 37 and right part piston rod 37 ' vertically, and left part piston rod 37 is better than 1.0 μ m with the perpendicularity of left part piston head 35, right part piston rod 37 ' with right part piston head 35 ' perpendicularity be better than 1.0 μ m; Left part piston rod 37 and right part piston rod 37 ' end use precise numerical control machine process respectively left bar thread section 49 and right bar thread section 49 '; Range when left part piston 7 and right part piston 7 ' work is all designed to s, guarantees that by limit structure stroke accuracy is better than 2.0 μ m;
Fig. 6 is the combination schematic diagram of tabletting structure 10 on plate spring groups 8 and left part on left part, and Fig. 7 is the combination schematic diagram of plate spring groups 9 and left part lower sheeting structure 11 under left part; Tabletting structure 10 on tabletting structure 10, left part lower sheeting structure 11 and right part on left part ', right part lower sheeting structure 11 ' higher by mechanical strength, metallic material that remanent magnetism is lower adopt numerical control machine tool processing and fabricating to form, machining accuracy is all better than 9.0 μ m; Plate spring groups 8 on plate spring groups 9 and right part under plate spring groups 8, left part on left part ', plate spring groups 9 under right part ' by some plate sheet leaf springs stack compositions, the thickness of monolithic thin slice leaf spring and quantity determine by specifically applying needed elastic stiffness, material is beryllium bronze or stainless steel, adopt the method for photoetching accurately to process inner molded line, inner molded line can be spirality, also can be straight-arm shape, that molded line requires is level and smooth, without burr, without knuckle, and exceed 10 by leaf spring vibration tester
8inspection of fatigue more than individual circulation;
The schematic diagram that inner molded line is spiral monolithic thin slice leaf spring as shown in Figure 8, on thin slice, etch spirality molded line 38 with photolithography, thereby self-assembling formation spirality leaf spring arm 39, outside reserves single piece plate spring outer rim 53, and evenly etch somely for the fixing screw hole 54 of screw thereon with photolithography, reserve single piece plate spring inner edge 55 in inner side;
The schematic diagram of the monolithic thin slice leaf spring that inner molded line is straight-arm shape as shown in Figure 9, on thin slice, etch straight-arm template spring arm 56 and movement arm 57 with photolithography, outside reserves single piece plate spring outer rim 58, and evenly etch somely for the fixing screw hole 59 of screw thereon with photolithography, reserve single piece plate spring inner edge 60 in inner side;
Figure 10 and Figure 11 are respectively the section plan of left part upper support structure 12 and left part lower support structure 13; Left part upper support structure 12 and the metallic material that left part lower support structure 13 is higher by mechanical strength, remanent magnetism is lower adopt numerical control machine tool processing and fabricating to form, and machining accuracy is all better than 5.0 μ m; The left side of left part upper support structure 12 is used precise numerical control machine to be processed into ring plain 25; Upper left supports right end face 24 is supported on left part lower yoke left side 19, and the two passes through screw fastening; Lower-left supports right end face 47 is supported in and shares on support left surface 48, the two welds together by electron beam welding technology, lower-left carries left leading flank 26 is supported on left part lower yoke right side 27, the two passes through screw fastening, the side, lower-left of left part lower support structure 13 is used precise numerical control machine to process lower ring plain 28, and the side, upper left of left part lower support structure 13 is used precise numerical control machine to process support exterior edge face, lower-left 52;
Figure 12 be right part lower support structure 13 ' section plan; Right part lower support structure 13 ' higher by mechanical strength, metallic material that remanent magnetism is lower adopt numerical control machine tool processing and fabricating to form, and machining accuracy is better than 5.0 μ m, its side, upper right use precise numerical control machine process support exterior edge face, lower-left 52 ';
Figure 13 is the section plan of left part displacement transducer iron core 14; Left part displacement transducer iron core 14 and right part displacement transducer iron core 14 ' make by pure iron material, inner be processed with respectively with the left iron core thread section 51 of left bar thread section 49 and right bar thread section 49 ' match and right iron core thread section 51 ', left bar thread section 49 and right bar thread section 49 ' screw in respectively left iron core thread section 51 and right iron core thread section 51 ' interior and fastening;
Left part coil rack 6, right part coil rack 6 ', left part displacement transducer supports 16, left part displacement transducer supports 16 ' metallic material higher by mechanical strength, that remanent magnetism is lower and adopts numerical control machine tool processing and fabricating to form, machining accuracy is all better than 9.0 μ m; Left part displacement transducer coil 15 and right part displacement transducer coil 15 ' form by enamel covered wire coiling on corresponding skeleton;
Figure 14 is the section plan of left part permanent magnet 2; Left part permanent magnet 2 and right part permanent magnet 2 ' all adopt the rare earth permanent-magnetic material that magnetic energy product is higher to make, use the mode machine shaping of laser beam machining; Left part permanent magnet 2 and right part permanent magnet 2 ' all use pulsed magnetizer radially to magnetize to saturated;
Figure 15 is the section plan of yoke 3 on left part; Yoke 3 on yoke 3 and right part on left part ' all adopt the pure iron material that permeability is higher, uses precise numerical control machine to process, and machining accuracy is all better than 8.0 μ m;
Figure 16 is the section plan of left part lower yoke 4; Left part lower yoke 4 and right part lower yoke 4 ' all adopt the pure iron material that permeability is higher, use precise numerical control machine to process, the axial thickness of left part lower yoke 4 and right part lower yoke 4 ' bottom is δ, and machining accuracy is all better than 2.0 μ m;
Figure 17 is the schematic diagram of left part current-carrying coil 5; Left part current-carrying coil 5 and right part current-carrying coil 5 ' all adopt enamel covered wire coiling in solid support to form, the motor force that the diameter of enamel covered wire and thickness are provided by needs determines; Left part current-carrying coil 5 and right part current-carrying coil 5 ' axial height be h, when making, guarantee that by machine tool accuracy and technique for coiling the precision of h is better than 2.0 μ m;
Figure 18 is the combined planar sectional view of yoke 3 on left part permanent magnet 2, left part, left part lower yoke 4 and left part current-carrying coil 5; Left part lower yoke 4 wraps up yoke 3 on left part permanent magnet 2 and left part wherein, jointly forms left part ring-type air gap 46, and left part current-carrying coil 5 inserts in left part ring-type air gap 46 with one heart; Left part lower yoke 4 ' by left part permanent magnet 2 ' and left part on yoke 3 ' parcel wherein, jointly form right part ring-type air gap 46 ', right part current-carrying coil 5 ' insert with one heart right part ring-type air gap 46 ' in; Yoke 3 on yoke 3, left part current-carrying coil 5, left part piston 7 and right part on left part ' with right part current-carrying coil 5 ', right part piston 7 ' all need in the time making guarantees to meet the axial thickness of lower yoke bottom separately and is greater than the axial height of current-carrying coil separately and the range sum of piston separately, that is: δ > s+h, to guarantee in whole piston stroke, guarantee that all the time current-carrying coil is within stable magnetic field;
Figure 19 and Figure 20 be respectively left part casing 17 and right part casing 17 ' section plan; Left part casing 17 and right part casing 17 ' high by mechanical strength, compact structure, the metallic material that remanent magnetism is lower use precise numerical control machine processing and fabricating to be shaped; Left part casing exterior edge face 61 is used electron beam technology to weld together with support exterior edge face, lower-left 52, forms left side airtight cavity; Right part casing exterior edge face 61 ' weld together with support exterior edge face, bottom right 52 ' use electron beam technology, form right part airtight cavity, above-mentioned two complete airtight cavities of welding are all filled with to high-purity helium check, and compressive strength all need be higher than 5.0MPa, and helium leak-down rate all need be lower than 3.0 × 10
-8pam
3/ s.
The advantage of this patent is: stable, the reliable and continuous operation of having realized moving-coil linear compressor in the mode of short coil and radial magnetizing, there is compact structure, vibrate outstanding advantages low, that electric efficiency is high, expected life is long, significant to the development of highly reliable, long lifetime, high efficiency linear compressor.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of four kinds of forms of dynamic coil linear motor, and wherein (1) is long loop axial charging form, and (2) are short coil axial charging form, and (3) are long loop radial magnetizing form, and (4) are short coil radial magnetizing form.Wherein 63 is permanent magnet, and 64 is upper yoke, and 65 is lower yoke, and 66 is current-carrying coil, through hole centered by 67;
Fig. 2 is the section plan of the opposed type moving-coil linear compressor of invented employing short coil radial magnetizing, wherein: 0 for sharing support, 1 is left part cylinder liner, 2 is left part permanent magnet, 3 is yoke on left part, 4 is left part lower yoke, 5 is left part current-carrying coil, 6 is left part coil rack, 7 is left part piston, 8 is plate spring groups on left part, 9 is plate spring groups under left part, 10 is tabletting structure on left part, 11 is left part lower sheeting structure, 12 is left part upper support structure, 13 is left part lower support structure, 14 is left part displacement transducer iron core, 15 is left part displacement transducer coil, 16 is the support of left part displacement transducer, 17 is left part casing, 1 ' be right part cylinder liner, 2 ' be right part permanent magnet, 3 ' be yoke on right part, 4 ' be right part lower yoke, 5 ' be right part current-carrying coil, 6 ' be right part coil rack, 7 ' be right part piston, 8 ' be plate spring groups on right part, 9 ' be plate spring groups under right part, 10 ' be tabletting structure on right part, 11 ' be right part lower sheeting structure, 12 ' be right part upper support structure, 13 ' be right part lower support structure, 14 ' be right part displacement transducer iron core, 15 ' be right part displacement transducer coil, 16 ' be the support of right part displacement transducer, 17 ' be right part casing,
Fig. 3 is the three-dimensional cutaway view that shares support 0, and wherein 41 is left part cylinder, 41 ' be right part cylinder, 42 for sharing air outlet hole, and 48 for sharing support left surface;
Fig. 4 is the three-dimensional cutaway view of left part cylinder liner 1;
Fig. 5 is the section plan of left part piston 7, and wherein 35 is left part piston head, and 36 is left part piston middle transition platform, and 37 is left part piston rod, and 49 is left bar thread section;
Fig. 6 is the combination schematic diagram of tabletting structure 10 on plate spring groups 8 and left part on left part, and wherein 29 is upper left group outer rim, and 30 is upper left group inner edge, upper left group spring body center hole 31;
Fig. 7 is the combination schematic diagram of plate spring groups 9 and left part lower sheeting structure 11 under left part, and wherein 32 is lower-left group outer rim, and 33 is lower-left group inner edge, and 34 is lower-left group spring body center hole;
Fig. 8 is that inner molded line is the schematic diagram of spiral monolithic thin slice leaf spring, and wherein 38 is spirality molded line, and 39 is spirality leaf spring arm, and 53 is single piece plate spring outer rim, and 54 is screw hole, and 55 is single piece plate spring inner edge;
Fig. 9 is that inner molded line is the schematic diagram of the monolithic thin slice leaf spring of straight-arm shape, and wherein 56 is straight-arm template spring arm, and 57 is movement arm, and 58 is single piece plate spring outer rim, and 59 is screw hole, and 60 is single piece plate spring inner edge;
Figure 10 is the section plan of left part upper support structure 12, and wherein 24 is upper left supports right end face, and 25 is upper ring plain;
Figure 11 is the section plan of left part lower support structure 13, and wherein 26 is lower-left carries left leading flank, and 28 is lower ring plain, and 47 is lower-left supports right end face, and 52 is support exterior edge face, lower-left;
Figure 12 be right part lower support structure 13 ' section plan, wherein 52 ' be support exterior edge face, bottom right;
Figure 13 is the section plan of left part displacement transducer iron core 14, and wherein 51 is left iron core thread section;
Figure 14 is the section plan of left part permanent magnet 2, and wherein 21 is left part magnet inner ring surface; 22 is left part permanent magnet right side; 43 is left part magnet inner via hole, and 68 is left part magnet outer ring surface;
Figure 15 is the section plan of yoke 3 on left part, and wherein 18 is yoke left side on left part; 20 is yoke right side on left part; 44 is yoke inner via hole on left part, and 67 is yoke outer ring surface on left part;
Figure 16 is the section plan of left part lower yoke 4, and wherein 19 is left part lower yoke left side; 23 is left part lower yoke inner ring surface, and 27 is left part lower yoke right side; 45 is left part lower yoke inner via hole;
Figure 17 is the schematic diagram of left part current-carrying coil 5;
Figure 18 is the combined planar sectional view of yoke 3 on left part permanent magnet 2, left part, left part lower yoke 4 and left part current-carrying coil 5, and wherein 46 is left part ring-type air gap;
Figure 19 is the section plan of left part casing 17, and wherein 61 is left part casing exterior edge face, and 62 is left part engine housing;
Figure 20 be right part casing 17 ' section plan, wherein 61 ' be right part casing exterior edge face, 62 ' be right part engine housing.
Embodiment
Below in conjunction with drawings and Examples, the embodiment of this patent is described in further detail:
The opposed type moving-coil linear compressor of the employing short coil radial magnetizing of inventing is by sharing support 0, left part cylinder liner 1, left part permanent magnet 2, yoke 3 on left part, left part lower yoke 4, left part current-carrying coil 5, left part coil rack 6, left part piston 7, plate spring groups 8 on left part, plate spring groups 9 under left part, tabletting structure 10 on left part, left part lower sheeting structure 11, left part upper support structure 12, left part lower support structure 13, left part displacement transducer iron core 14, left part displacement transducer coil 15, left part displacement transducer supports 16, left part casing 17 and right part cylinder liner 1 ', right part permanent magnet 2 ', yoke 3 on right part ', right part lower yoke 4 ', right part current-carrying coil 5 ', right part coil rack 6 ', right part piston 7 ', plate spring groups 8 on right part ', plate spring groups 9 under right part ', tabletting structure 10 on right part ', right part lower sheeting structure 11 ', right part upper support structure 12 ', right part lower support structure 13 ', right part displacement transducer iron core 14 ', right part displacement transducer coil 15 ', right part displacement transducer support 16 ', right part casing 17 ' composition jointly, it is characterized in that, the mechanical vibration that overall structure adopts opposed type to produce to offset left and right two-part, take vertical center line 40 as symmetry axis, all parts of left part and structural configuration and right part corresponding part and structural configuration enantiotropy each other, horizontal axis 50 indications are shown axial direction, share support 0 by left part cylinder 41, right part cylinder 41 ' and shared air outlet hole 42 form, left part cylinder liner 1 interference fit is embedded in the inside of left part cylinder 41, right part cylinder liner 1 ' interference fit be embedded in right part cylinder 41 ' inside, left part permanent magnet 2 is cylinder-like structure, and central position is processed with left part magnet inner via hole 43 vertically, on left part, yoke 3 is cylinder-like structure, and its central position is processed with yoke inner via hole 44 on the left part that diameter is d vertically, and on left part, the external diameter of yoke 3 is than little 2.0～3.0 μ m of the diameter of left part magnet inner via hole 43, left part lower yoke 4 is U-shaped structure, the internal diameter of U-shaped body is than large 2.0～3.0 μ m of the external diameter of left part permanent magnet 2, central position in U-shaped body bottom is processed with left part lower yoke inner via hole 45 vertically, and the diameter of left part lower yoke inner via hole 45 is greater than the external diameter of yoke 3 on left part, left part permanent magnet 2 radially magnetizes to saturated, on left part, yoke 3 inserts left part magnet inner via hole 43 inside afterwards, left part lower yoke 4 wraps up yoke 3 on left part permanent magnet 2 and left part wherein, on left part, yoke left side 18 flushes with left part lower yoke left side 19, and on left part, yoke right side 20, left part permanent magnet right side 22 and left part lower yoke right side 27 threes flush, on left part permanent magnet inner ring surface 21 and left part, yoke outer ring surface 67 is close together, and left part magnet outer surface 68 is close together with left part lower yoke inner ring surface 23, yoke 3, the common left part ring-type air gap 46 that forms of left part lower yoke 4 on left part permanent magnet 2, left part, left part current-carrying coil 5 inserts in left part ring-type air gap 46 with one heart, right part permanent magnet 2 ', yoke 3 on right part ', right part lower yoke 4 ' jointly form right part ring-type air gap 46 ', right part current-carrying coil 5 ' insert with one heart right part ring-type air gap 46 ' in, left part current-carrying coil 5 and right part current-carrying coil 5 ' axial height be h, range when left part piston 7 and right part piston 7 ' work is s, left part lower yoke 4 is δ with the axial thickness of right part lower yoke 4 ' bottom, and meets relation: δ > s+h, to guarantee in whole piston stroke, guarantees that current-carrying coil is within stable magnetic field all the time, upper left supports right end face 24 is supported on left part lower yoke left side 19, and the two is by screw fastening, and ring plain 25 is processed in the left side of left part upper support structure 12, lower-left supports right end face 47 is supported in and shares on support left surface 48, and the two welds together, lower-left carries left leading flank 26 is supported on left part lower yoke right side 27, and the two is by screw fastening, and lower ring plain 28 is processed in the side, lower-left of left part lower support structure 13, on left part, plate spring groups 8 is formed by stacking by some single piece plate spring thin slices, form upper left group outer rim 29 in outer rim, form upper left group inner edge 30 at inner edge, being processed with vertically diameter in center portion is the upper left group spring body center hole 31 of d, wherein upper left group outer rim 29 is positioned on the upper ring plain 25 of left part upper support structure 12, and passes through screw fastening, under left part, plate spring groups 9 is formed by stacking by some single piece plate spring thin slices, form lower-left group outer rim 32 in outer rim, form lower-left group inner edge 33 at inner edge, being processed with vertically diameter in center portion is the lower-left group spring body center hole 34 of d, wherein lower-left group outer rim 32 is positioned on the lower ring plain 28 of left part lower support structure 13, and passes through screw fastening, left part piston 7 is made up of left part piston head 35, left part piston middle transition platform 36 and left part piston rod 37, be processed with the left bar thread section 49 of long 1～3mm at the end of left part piston rod 37, the external diameter of left part piston head 35, than little 10～30 μ m of internal diameter of left part cylinder 41, guarantees that the diameter of left part piston rod 37 is less than d simultaneously, left part piston rod 37 runs through yoke inner via hole 44 on lower-left group spring body center hole 34, left part lower yoke inner via hole 45, left part, upper left group spring body center hole 31 successively, on left part, tabletting structure 10 tightens together upper left group inner edge 30 and left part coil rack 6 with left part piston rod 37, left part lower sheeting structure 11 tightens together lower-left group inner edge 33 with left part piston middle transition platform 36, thereby guarantees on left part current-carrying coil 5, left part coil rack 6 and left part piston 7, left part under plate spring groups 8, left part that plate spring groups 9 is connected to the entirety that can simultaneously move, left part displacement transducer iron core 14 inside are processed with the left iron core thread section 51 matching with left bar thread section 49, and left bar thread section 49 screws in left iron core thread section 51 also fastening, outside left part displacement transducer iron core 14, arrange with left part displacement transducer and support the 16 left part displacement transducer coils 15 that tighten together, left part displacement transducer supports 16 and then be supported on left part upper support structure 12 also and tighten together with it, left part casing 17 is welded and fixed by left part casing exterior edge face 61 and support exterior edge face, lower-left 52, thereby form left part airtight cavity, by left part cylinder liner 1, left part permanent magnet 2, yoke 3 on left part, left part lower yoke 4, left part current-carrying coil 5, left part coil rack 6, left part piston 7, plate spring groups 8 on left part, plate spring groups 9 under left part, tabletting structure 10 on left part, left part lower sheeting structure 11, left part upper support structure 12, left part lower support structure 13, left part displacement transducer iron core 14, left part displacement transducer coil 15, left part displacement transducer supports 16, left part casing 17 all covers in wherein, the all parts of right part and structural configuration are left part corresponding part and the structural configuration enantiotropies about vertical center line 40, right part casing 17 ' by right part casing exterior edge face 61 ' with support exterior edge face, bottom right 52 ' be welded and fixed, form right part airtight cavity, by right part cylinder liner 1 ', right part permanent magnet 2 ', yoke 3 on right part ', right part lower yoke 4 ', right part current-carrying coil 5 ', right part coil rack 6 ', right part piston 7 ', plate spring groups 8 on right part ', plate spring groups 9 under right part ', tabletting structure 10 on right part ', right part lower sheeting structure 11 ', right part upper support structure 12 ', right part lower support structure 13 ', right part displacement transducer iron core 14 ', right part displacement transducer coil 15 ', right part displacement transducer support 16 ', right part casing 17 ' all cover in wherein, thereby form a kind of opposed type moving-coil linear compressor that adopts short coil radial magnetizing.
Fig. 2 is the section plan of the opposed type moving-coil linear compressor of invented employing short coil radial magnetizing; Take vertical center line 40 as symmetry axis each other all parts of left part of enantiotropy and right part corresponding part need adopt same batch of production part so that the difference between individuality minimize;
Fig. 3 is the three-dimensional cutaway view that shares support 0; Sharing support 0 adopts the titanium alloy material that mechanical strength is high, thermal expansion coefficient is little to make, adopt five-axis machine tool process simultaneously left part cylinder 41 and right part cylinder 41 ', assurance left part cylinder 41 and right part cylinder 41 ' about vertical center line 40 symmetries, and guarantee left part cylinder 41 and right part cylinder 41 ' coaxality be better than 1.0 μ m, guarantee that the endoporus circularity of above-mentioned two cylinders is all better than 0.5 μ m simultaneously; After left part cylinder 41 and right part cylinder 41 ' completion of processing, use same five-axis machine tool to process and share air outlet hole 42, guarantee to share air outlet hole 42 and left part cylinder 41 and right part cylinder 41 ' perpendicularity be all better than 2.0 μ m;
Fig. 4 is the three-dimensional cutaway view (for the left and right parts of enantiotropy each other, generally only provide the detailed maps of left part, and manufacturer's rule together being narrated left part and right part parts in accompanying drawing, lower same) of left part cylinder liner 1; left part cylinder liner 1 and right part cylinder liner 1 ' all adopt hardness is greater than 58 die steel material and uses the method for the silk thread cutting of being careful to be processed into cylindric, guarantee left part cylinder liner 1 and right part cylinder liner 1 ' external diameter respectively than left part cylinder 41 and right part cylinder 41 ' the large 0.5～1.0mm of internal diameter, then adopt interference fit and the mode of expanding with heat and contract with cold be inlaid into respectively left part cylinder 41 and right part cylinder 41 ' in, concrete method for embedding is as follows: it is homogeneous heating 5 hours in the heated at constant temperature case of 160 ℃ that shared support 0 entirety is as shown in Figure 3 positioned over to inside temperature, take out heated at constant temperature case first 6 minutes at shared support 0, by left part cylinder liner 1 and right part cylinder liner 1 ' be positioned in liquid nitrogen and soak simultaneously, when shared support 0 takes out from heated at constant temperature case, by left part cylinder liner 1 and right part cylinder liner 1 ' take out from liquid nitrogen, then use mechanical external force by left part cylinder liner 1 and right part cylinder liner 1 ' push respectively left part cylinder 41 and right part cylinder 41 ' inside, thereby guarantee left part cylinder liner 1 and right part cylinder liner 1 ' outer wall respectively with left part cylinder 41 and right part cylinder 41 ' inwall combine closely, then use jig grinding machine to left part cylinder liner 1 and right part cylinder liner 1 ' endoporus carry out fine gtinding, guarantee that its endoporus circularity is all better than 0.5 μ m,
Fig. 5 is the section plan of left part piston 7; Left part piston 7 and right part piston 7 ' all adopt the titanium alloy material that mechanical strength is high, thermal expansion coefficient is little to make, first adopt numerical control machine tool to process blank, then adopt jig grinding machine to carry out fine gtinding, guarantee left part piston head 35 and right part piston head 35 ' circularity be all better than 0.5 μ m, and guarantee the beating lower than 3.0 μ m of left part piston rod 37 and right part piston rod 37 ' vertically, and left part piston rod 37 is better than 1.0 μ m with the perpendicularity of left part piston head 35, right part piston rod 37 ' with right part piston head 35 ' perpendicularity be better than 1.0 μ m; Left part piston rod 37 and right part piston rod 37 ' end use precise numerical control machine process respectively left bar thread section 49 and right bar thread section 49 '; Range when left part piston 7 and right part piston 7 ' work is all designed to s, guarantees that by limit structure stroke accuracy is better than 2.0 μ m;
Fig. 6 is the combination schematic diagram of tabletting structure 10 on plate spring groups 8 and left part on left part, and Fig. 7 is the combination schematic diagram of plate spring groups 9 and left part lower sheeting structure 11 under left part; Tabletting structure 10 on tabletting structure 10, left part lower sheeting structure 11 and right part on left part ', right part lower sheeting structure 11 ' higher by mechanical strength, metallic material that remanent magnetism is lower adopt numerical control machine tool processing and fabricating to form, machining accuracy is all better than 9.0 μ m; Plate spring groups 8 on plate spring groups 9 and right part under plate spring groups 8, left part on left part ', plate spring groups 9 under right part ' by some plate sheet leaf springs stack compositions, the thickness of monolithic thin slice leaf spring and quantity determine by specifically applying needed elastic stiffness, material is beryllium bronze or stainless steel, adopt the method for photoetching accurately to process inner molded line, inner molded line can be spirality, also can be straight-arm shape, that molded line requires is level and smooth, without burr, without knuckle, and exceed 10 by leaf spring vibration tester
8inspection of fatigue more than individual circulation;
The schematic diagram that inner molded line is spiral monolithic thin slice leaf spring as shown in Figure 8, on thin slice, etch spirality molded line 38 with photolithography, thereby self-assembling formation spirality leaf spring arm 39, outside reserves single piece plate spring outer rim 53, and evenly etch somely for the fixing screw hole 54 of screw thereon with photolithography, reserve single piece plate spring inner edge 55 in inner side;
The schematic diagram of the monolithic thin slice leaf spring that inner molded line is straight-arm shape as shown in Figure 9, on thin slice, etch straight-arm template spring arm 56 and movement arm 57 with photolithography, outside reserves single piece plate spring outer rim 58, and evenly etch somely for the fixing screw hole 59 of screw thereon with photolithography, reserve single piece plate spring inner edge 60 in inner side;
Figure 10 and Figure 11 are respectively the section plan of left part upper support structure 12 and left part lower support structure 13; Left part upper support structure 12 and the metallic material that left part lower support structure 13 is higher by mechanical strength, remanent magnetism is lower adopt numerical control machine tool processing and fabricating to form, and machining accuracy is all better than 5.0 μ m; The left side of left part upper support structure 12 is used precise numerical control machine to be processed into ring plain 25; Upper left supports right end face 24 is supported on left part lower yoke left side 19, and the two passes through screw fastening; Lower-left supports right end face 47 is supported in and shares on support left surface 48, the two welds together by electron beam welding technology, lower-left carries left leading flank 26 is supported on left part lower yoke right side 27, the two passes through screw fastening, the side, lower-left of left part lower support structure 13 is used precise numerical control machine to process lower ring plain 28, and the side, upper left of left part lower support structure 13 is used precise numerical control machine to process support exterior edge face, lower-left 52;
Figure 12 be right part lower support structure 13 ' section plan; Right part lower support structure 13 ' higher by mechanical strength, metallic material that remanent magnetism is lower adopt numerical control machine tool processing and fabricating to form, and machining accuracy is better than 5.0 μ m, its side, upper right use precise numerical control machine process support exterior edge face, lower-left 52 ';
Figure 13 is the section plan of left part displacement transducer iron core 14; Left part displacement transducer iron core 14 and right part displacement transducer iron core 14 ' make by pure iron material, inner be processed with respectively with the left iron core thread section 51 of left bar thread section 49 and right bar thread section 49 ' match and right iron core thread section 51 ', left bar thread section 49 and right bar thread section 49 ' screw in respectively left iron core thread section 51 and right iron core thread section 51 ' interior and fastening;
Left part coil rack 6, right part coil rack 6 ', left part displacement transducer supports 16, left part displacement transducer supports 16 ' metallic material higher by mechanical strength, that remanent magnetism is lower and adopts numerical control machine tool processing and fabricating to form, machining accuracy is all better than 9.0 μ m; Left part displacement transducer coil 15 and right part displacement transducer coil 15 ' form by enamel covered wire coiling on corresponding skeleton;
Figure 14 is the section plan of left part permanent magnet 2; Left part permanent magnet 2 and right part permanent magnet 2 ' all adopt the rare earth permanent-magnetic material that magnetic energy product is higher to make, use the mode machine shaping of laser beam machining; Left part permanent magnet 2 and right part permanent magnet 2 ' all use pulsed magnetizer radially to magnetize to saturated;
Figure 15 is the section plan of yoke 3 on left part; Yoke 3 on yoke 3 and right part on left part ' all adopt the pure iron material that permeability is higher, uses precise numerical control machine to process, and machining accuracy is all better than 8.0 μ m;
Figure 16 is the section plan of left part lower yoke 4; Left part lower yoke 4 and right part lower yoke 4 ' all adopt the pure iron material that permeability is higher, use precise numerical control machine to process, the axial thickness of left part lower yoke 4 and right part lower yoke 4 ' bottom is δ, and machining accuracy is all better than 2.0 μ m;
Figure 17 is the schematic diagram of left part current-carrying coil 5; Left part current-carrying coil 5 and right part current-carrying coil 5 ' all adopt enamel covered wire coiling in solid support to form, the motor force that the diameter of enamel covered wire and thickness are provided by needs determines; Left part current-carrying coil 5 and right part current-carrying coil 5 ' axial height be h, when making, guarantee that by machine tool accuracy and technique for coiling the precision of h is better than 2.0 μ m;
Figure 18 is the combined planar sectional view of yoke 3 on left part permanent magnet 2, left part, left part lower yoke 4 and left part current-carrying coil 5; Left part lower yoke 4 wraps up yoke 3 on left part permanent magnet 2 and left part wherein, jointly forms left part ring-type air gap 46, and left part current-carrying coil 5 inserts in left part ring-type air gap 46 with one heart; Left part lower yoke 4 ' by left part permanent magnet 2 ' and left part on yoke 3 ' parcel wherein, jointly form right part ring-type air gap 46 ', right part current-carrying coil 5 ' insert with one heart right part ring-type air gap 46 ' in; Yoke 3 on yoke 3, left part current-carrying coil 5, left part piston 7 and right part on left part ' with right part current-carrying coil 5 ', right part piston 7 ' all need in the time making guarantees to meet the axial thickness of lower yoke bottom separately and is greater than the axial height of current-carrying coil separately and the range sum of piston separately, that is: δ > s+h, to guarantee in whole piston stroke, guarantee that all the time current-carrying coil is within stable magnetic field;
Figure 19 and Figure 20 be respectively left part casing 17 and right part casing 17 ' section plan; Left part casing 17 and right part casing 17 ' high by mechanical strength, compact structure, the metallic material that remanent magnetism is lower use precise numerical control machine processing and fabricating to be shaped; Left part casing exterior edge face 61 is used electron beam technology to weld together with support exterior edge face, lower-left 52, forms left side airtight cavity; Right part casing exterior edge face 61 ' weld together with support exterior edge face, bottom right 52 ' use electron beam technology, form right part airtight cavity, above-mentioned two complete airtight cavities of welding are all filled with to high-purity helium check, and compressive strength all need be higher than 5.0MPa, and helium leak-down rate all need be lower than 3.0 × 10
-8pam
3/ s.
Claims (1)
1. adopt an opposed type moving-coil linear compressor for short coil radial magnetizing, by shared support (0), left part cylinder liner (1), left part permanent magnet (2), yoke on left part (3), left part lower yoke (4), left part current-carrying coil (5), left part coil rack (6), left part piston (7), plate spring groups on left part (8), plate spring groups under left part (9), tabletting structure on left part (10), left part lower sheeting structure (11), left part upper support structure (12), left part lower support structure (13), left part displacement transducer iron core (14), left part displacement transducer coil (15), left part displacement transducer supports (16), left part casing (17) and right part cylinder liner (1 '), right part permanent magnet (2 '), yoke on right part (3 '), right part lower yoke (4 '), right part current-carrying coil (5 '), right part coil rack (6 '), right part piston (7 '), plate spring groups on right part (8 '), plate spring groups under right part (9 '), tabletting structure on right part (10 '), right part lower sheeting structure (11 '), right part upper support structure (12 '), right part lower support structure (13 '), right part displacement transducer iron core (14 '), right part displacement transducer coil (15 '), right part displacement transducer supports (16 ') and right part casing (17 ') composition, it is characterized in that, the mechanical vibration that overall structure adopts opposed type to produce to offset left and right two-part, take vertical center line (40) as symmetry axis, all parts of left part and structural configuration and right part corresponding part and structural configuration enantiotropy each other, horizontal axis (50) indication is shown axial direction, sharing support (0) is made up of left part cylinder (41), right part cylinder (41 ') and shared air outlet hole (42), left part cylinder liner (1) interference fit is embedded in the inside of left part cylinder (41), and right part cylinder liner (1 ') interference fit is embedded in the inside of right part cylinder (41 '), left part permanent magnet (2) is cylinder-like structure, and central position is processed with left part magnet inner via hole (43) vertically, yoke on left part (3) is cylinder-like structure, and its central position is processed with yoke inner via hole (44) on the left part that diameter is d vertically, and the external diameter of yoke on left part (3) is than little 2.0～3.0 μ m of the diameter of left part magnet inner via hole (43), left part lower yoke (4) is U-shaped structure, the internal diameter of U-shaped body is than large 2.0～3.0 μ m of the external diameter of left part permanent magnet (2), central position in U-shaped body bottom is processed with left part lower yoke inner via hole (45) vertically, and the diameter of left part lower yoke inner via hole (45) is greater than the external diameter of yoke on left part (3), left part permanent magnet (2) radially magnetizes to saturated, on left part, yoke (3) inserts left part magnet inner via hole (43) inside afterwards, left part lower yoke (4) wraps up yoke (3) on left part permanent magnet (2) and left part wherein, on left part, yoke left side (18) flush with left part lower yoke left side (19), and on left part, yoke right side (20), left part permanent magnet right side (22) and left part lower yoke right side (27) three flush, on left part permanent magnet inner ring surface (21) and left part, yoke outer ring surface (67) is close together, and left part magnet ring surface (68) is close together with left part lower yoke inner ring surface (23), on left part permanent magnet (2), left part, yoke (3), left part lower yoke (4) form left part ring-type air gap (46) jointly, left part current-carrying coil (5) inserts in left part ring-type air gap (46) with one heart, on right part permanent magnet (2 '), right part, yoke (3 '), right part lower yoke (4 ') form right part ring-type air gap (46 ') jointly, and right part current-carrying coil (5 ') inserts in right part ring-type air gap (46 ') with one heart, left part current-carrying coil (5) is h with the axial height of right part current-carrying coil (5 '), range when left part piston (7) is worked with right part piston (7 ') is s, left part lower yoke (4) is δ with the axial thickness of right part lower yoke (4 ') bottom, and meets relation: δ > s+h, to guarantee in whole piston stroke, guarantees that current-carrying coil is within stable magnetic field all the time, upper left supports right end face (24) is supported on left part lower yoke left side (19), and the two is by screw fastening, and ring plain (25) is processed in the left side of left part upper support structure (12), lower-left supports right end face (47) is supported in and shares on support left surface (48), and the two welds together, lower-left carries left leading flank (26) is supported on left part lower yoke right side (27), and the two is by screw fastening, and lower ring plain (28) is processed in the side, lower-left of left part lower support structure (13), plate spring groups on left part (8) is formed by stacking by some single piece plate spring thin slices, form upper left group outer rim (29) in outer rim, form upper left group inner edge (30) at inner edge, being processed with vertically diameter in center portion is the upper left group spring body center hole (31) of d, wherein upper left group outer rim (29) is positioned on the upper ring plain (25) of left part upper support structure (12), and passes through screw fastening, under left part, plate spring groups 9 is formed by stacking by some single piece plate spring thin slices, form lower-left group outer rim (32) in outer rim, form lower-left group inner edge (33) at inner edge, being processed with vertically diameter in center portion is the lower-left group spring body center hole (34) of d, wherein lower-left group outer rim (32) is positioned on the lower ring plain (28) of left part lower support structure (13), and passes through screw fastening, left part piston (7) is made up of left part piston head (35), left part piston middle transition platform (36) and left part piston rod (37), be processed with the left bar thread section (49) of long 1～3mm at the end of left part piston rod (37), the external diameter of left part piston head (35), than little 10～30 μ m of internal diameter of left part cylinder (41), guarantees that the diameter of left part piston rod (37) is less than d simultaneously, left part piston rod (37) runs through yoke inner via hole (44), upper left group spring body center hole (31) on lower-left group spring body center hole (34), left part lower yoke inner via hole (45), left part successively, tabletting structure on left part (10) tightens together upper left group inner edge (30) and left part coil rack (6) with left part piston rod (37), left part lower sheeting structure (11) tightens together lower-left group inner edge (33) with left part piston middle transition platform (36), thereby guarantees on left part current-carrying coil (5), left part coil rack (6) and left part piston (7), left part under plate spring groups (8), left part that plate spring groups (9) is connected to the entirety that can simultaneously move, left part displacement transducer iron core (14) inside is processed with the left iron core thread section (51) matching with left bar thread section (49), and left bar thread section (49) screws in left iron core thread section (51) also fastening, outside left part displacement transducer iron core (14), arrange with left part displacement transducer and support the left part displacement transducer coil (15) that (16) tighten together, left part displacement transducer supports (16) and then is supported on left part upper support structure (12) and tightens together with it, left part casing (17) is welded and fixed by left part casing exterior edge face (61) and support exterior edge face, lower-left (52), thereby form left part airtight cavity, by left part cylinder liner (1), left part permanent magnet (2), yoke on left part (3), left part lower yoke (4), left part current-carrying coil (5), left part coil rack (6), left part piston (7), plate spring groups on left part (8), plate spring groups under left part (9), tabletting structure on left part (10), left part lower sheeting structure (11), left part upper support structure (12), left part lower support structure (13), left part displacement transducer iron core (14), left part displacement transducer coil (15), left part displacement transducer supports (16), left part casing (17) all covers in wherein, the all parts of right part and structural configuration are left part corresponding part and the structural configuration enantiotropies about vertical center line (40), right part casing (17 ') is welded and fixed by right part casing exterior edge face (61 ') and support exterior edge face, bottom right (52 '), form right part airtight cavity, by right part cylinder liner (1 '), right part permanent magnet (2 '), yoke on right part (3 '), right part lower yoke (4 '), right part current-carrying coil (5 '), right part coil rack (6 '), right part piston (7 '), plate spring groups on right part (8 '), plate spring groups under right part (9 '), tabletting structure on right part (10 '), right part lower sheeting structure (11 '), right part upper support structure (12 '), right part lower support structure (13 '), right part displacement transducer iron core (14 '), right part displacement transducer coil (15 '), right part displacement transducer supports (16 '), right part casing (17 ') all covers in wherein, thereby forms a kind of opposed type moving-coil linear compressor that adopts short coil radial magnetizing.
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| CN201320740948.1U CN203627132U (en) | 2013-11-21 | 2013-11-21 | Oppositely-arranged moving coil linear compressor allowing radial magnetizing to be achieved through short coils |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671014A (en) * | 2013-11-21 | 2014-03-26 | 中国科学院上海技术物理研究所 | Oppositely-arranged moving coil linear compressor adopting short-coil radial magnetization and manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671014A (en) * | 2013-11-21 | 2014-03-26 | 中国科学院上海技术物理研究所 | Oppositely-arranged moving coil linear compressor adopting short-coil radial magnetization and manufacturing method |
| CN103671014B (en) * | 2013-11-21 | 2016-01-13 | 中国科学院上海技术物理研究所 | Adopt opposed type moving-coil linear compressor and the manufacture method of short-coil radial magnetization |
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