CN201110257Y - Movable magnetic vibrator - Google Patents
Movable magnetic vibrator Download PDFInfo
- Publication number
- CN201110257Y CN201110257Y CNU2007200879211U CN200720087921U CN201110257Y CN 201110257 Y CN201110257 Y CN 201110257Y CN U2007200879211 U CNU2007200879211 U CN U2007200879211U CN 200720087921 U CN200720087921 U CN 200720087921U CN 201110257 Y CN201110257 Y CN 201110257Y
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Abstract
The utility model relates to a dynamic magnetic vibration exciter, which belongs to a linear compressor in the general mechanical engineering, which is suitable for the field of low temperature cooling. The utility model installs a column-shaped branch hanging spring, a heel piece and a coil in the heel piece in cylinder-shaped shell, a cylinder is inserted into a cylinder flange, the cylinder flange is centered and matched with the shell, a piston in the cylinder is fixedly connected with a piston rod and is traversed through the heel piece and the coil in the heel piece to support in the center of the column-shaped branch hanging spring, permanent magnetic rings are composed of two axial permanent magnetic rings and a radial permanent magnetic ring, the heel piece is composed of two circular columns with grooves which are convoluted by silicon-steel sheets and are put together, the cross section of the upper surface and the lower surface of the heel piece is a concave ladder type, and the heel piece is connected with cover plate silicon-steel sheets whose cross section is a convex ladder type. The vibration exciter of the utility model has simple structure, small whole machine size and easy assembly, error transmission is reduced, the service life of the machine is prolonged, the linear compressor can realize the connection with different working demands, simultaneously, the working frequency and the piston stroke can be regulated, and the linear compressor can work according to a locking crank phase through an electric control system under the opposed condition.
Description
Technical field
The utility model belongs to a kind of linear compressor in the universal machine engineering, is applicable to the cryogenic refrigeration field, also can be used for field of acoustics and medical domain.
Background technique
The approval time of the hot machine patent of Stirling is 1818, and it uses regenerator to realize the process of isothermal compression and expansion in sealing system, is the highest hot machine circulation of thermodynamic efficiency.But because of complex process not developed.The hot machine of heat sound of the appearance eighties in last century can be folded at acoustic resonance Guan Zhongyong heat sound heat is directly changed into merit.Through the development in surplus 20 years, the easy structure of the high efficiency of the hot machine of Stirling and the hot machine of heat sound might combine by little processing (MEMS), became to work in high-frequency hot acoustic Stirling resonant transducer.Its most noticeable characteristic is can convert mechanical work to by the heat that grade is very low without movable member, becomes the novel transducer that gets a good chance of in renewable energy technologies.Energy demand urgent, cause the development of renewable energy technologies, hot acoustic Stirling can reduce the self-oscillatory starting of oscillation threshold value of heat sound by the excitation in external excitation source, but at present the majority that adopts remains the moving coil vibration exciter, and its coil lead is along with moving-coil vibrates together, frangibility, and because of the moving-coil quality big, can not work under high frequency, the permanent magnetism of radial magnetizing causes the off-centre of mover simultaneously, makes compressor piston form high-quality clearance seal with cylinder.
Miniature Stirling refrigerating machine is the critical component in photoelectron technology, superconductor technology and the space telecommunication technique, also can be applicable in pacemaker, medical oxygen producing system and the medical refrigerator.It requires to adopt the gap sealed moving coil vibration exciter of oil-free lubrication, after improving for many years, the moving coil vibration exciter can be realized the life-span of 2-3, but to the requirement on machining accuracy height, processing cost is difficult to descend, and because wearing and tearing and obstruction make service life shorter, these characteristics have caused the life-span bottleneck of sterlin refrigerator.
Moving-magnet exciter is simple in structure, piston wear is little, the life-span is long, control is simple, can control the frequency and the displacement of vibration, and along with the development of high magnetic flux permanent magnet rubidium iron boron, and architecture advances, also have further performance improvement.Reducing of piston rod length all helps the stable operation of sterlin refrigerator and improves the life-span for the motion that reduces propagation of error and avoid connecting lead.
Chinese invention patent application publication number 1585857A proposes a kind of linear compressor, it is a kind of moving-magnet exciter, is made of cylinder body, piston, cylinder body end face, the moving element that constitutes the linear motor part and standing part, helical spring, end cap part, support mechanism part, seal container etc.Be formed with the pressing chamber that carries out gas compression in the cylinder body.Spring component is made of the helical spring with certain spring rigidity.The moving-magnetic type linear motor Driven Compressor has been adopted in this invention, but helical spring radial rigidity is almost nil, and lateral force will inevitably cause the side wear of cylinder and piston, thereby shortens the working life of compressor.
Chinese invention patent application publication number CN1773112A proposes a kind of moving-magnetic linear compressor, it also is a kind of moving-magnet exciter, comprise a straight line electric machine assembly, mainly contain interior outer yoke, moving magnetic filed, permanent magnet and the electric mover carriage of concentric composite structure, permanent magnet is arranged on the motor mover carriage and is in the magnetic field that is made of outer yoke.Its characteristics one are suspension assemblies, mainly contain the spring bracket that is connected with support, be installed on spring bracket on motor mover carriage flexure spring, interior outer washer and be installed in the crashproof cylinder frame structure that prevents between electric mover carriage and the inner yoke that piston and cylinder from bumping against; The 2nd, permanent magnet adopts the multi-disc type structure that reduces eccentric magnetic force.This structure more complicated, the requirement on machining accuracy height, while multi-disc permanent magnetism is difficult to ensure the quality of products and is evenly distributed.
Summary of the invention
The utility model proposes a kind of moving-magnet exciter, overcome deficiency and defective that prior art structure more complicated, multi-disc type structure permanent magnet cause eccentric magnetic force and radial permanent magnet body, increase the driving force and the working life of compressor.
A kind of moving-magnet exciter of the present utility model, column is housed in cylindrical housing props up the coil that hangs spring, yoke and inside thereof, cylinder embeds the cylinder flange, cylinder flange and shell centering cooperate, piston in the cylinder is fixedlyed connected with piston rod, the piston rod of permanent-magnetic clamp is posted on the surface, passes yoke and inner coil supports thereof and props up in column and hang spring center, it is characterized in that:
Described permanent-magnetic clamp is made up of two axial permanent magnetic rings and a radial permanent magnet ring, and the permanent-magnetic clamp material is the rubidium iron boron magnet;
Described yoke is wound into two cylinders that have groove by silicon steel plate and is spliced, and the cylinder upper and lower surface cross section of splicing is trapezoidal for what be recessed into, and is connected for the trapezoidal silicon steel plate cover plate that protrudes with the cross section.
Described moving-magnet exciter is characterized in that: be connected with mighty bond with piston rod behind the described permanent-magnetic clamp liner silicon steel plate; Described shell is connected the employing plane contact with the cylinder flange, have positioning table on the fitting surface of cylinder flange and shell, has seal groove on the fitting surface of shell.
The magnetic intensity that axial permanent magnetic ring of the present utility model provides driving force to need, radial permanent magnet ring are used for limiting the piston stroke that needs.The Spielpassung location of piston and permanent-magnetic clamp relies on column to prop up and hangs spring and cylinder flange, after determining good suitable gap, and the permanent-magnetic clamp that processing is corresponding.Silicon steel plate is wound into the suitable groove coil of packing into, and forms trapezoidal bridging arrangement and be connected with the cover plate silicon steel plate.Magnetic field and permanent magnet magnetic field interactions rear driving piston rod movement by coil stimulating formation.
To being used for the occasion of Stirling-electric hybrid, the running of moving-magnet exciter of the present utility model is when drive coil feeds Ac, between interior outer yoke and air gap, form alternating magnetic field, rotor permanent magnet is subjected to the electromagnetic force of alternation, drive piston and form reciprocal compression and inflation process with hanging spring, gas in the cylinder is formed compression and expansion alternately, and under the opposed situation of moving-magnet exciter, control mechanism can be arranged according to locking phase work.
The utility model is simple in structure, the complete machine size is little, is easy to assembling; Rubidium iron boron axial magnetizing permanent magnetism ring is adopted at two ends, and the middle radial magnetizing permanent magnetism ring that adopts realizes that magnetic field focuses on and magnetic intensity is big, and piston stroke is controlled well; Coil stationary is in the groove that the special moulding of silicon steel plate forms, and trapezoidal connection between the silicon steel plate forms closed magnetic path, and the motion of the pair of connecting wires of coil does not have influence; The mover quality that permanent-magnetic clamp, piston and piston rod are formed is little, is easy to realize high frequency; Owing to reduced piston rod length, thereby reduced propagation of error, prolonged service life of a machine.
The utility model can be realized and being connected of different operating demand, and can adjust frequency of okperation and piston stroke simultaneously, and can be by automatical control system according to locking phase work under opposed situation.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 the utility model permanent-magnetic clamp is arranged and the field circuit schematic representation;
The trapezoidal connection diagram of silicon steel plate of Fig. 3 the utility model yoke.
Mark among the figure: back pressure suction tude 1, shell 2, locking nut 3, column is propped up and is hung spring 4, yoke 5, coil 6, cylinder flange 7, permanent-magnetic clamp 8, piston rod 9, piston 10, cylinder connection piece 11, cylinder 12, seal ring 13, gasket ring 14, silicon steel plate 15, silicon steel plate cover plate 16, piston rod perforation 17, coil recess 18.
Embodiment
As shown in Figure 1, the utility model adopts stainless steel to make shell 2, control concentricity and perpendicularity in the processing, the column that meets the output demand that designs propped up hang spring 4 and slide and pack into, both play supporting role, also played the bearing effect simultaneously, also will realize location piston rod 9, add upper baffle ring and realize support, and stay column and prop up and hang the displacement amount that spring 4 distortion need yoke 5.Yoke 5 is selected silicon steel plate for use, forms closed magnetic path according to trapezoidal butt joint, and coil 6 just is placed on the groove that forms in the middle of the yoke 5, and lead-in wire then can be drawn by perforate on shell 2.Coil 6 adopts a kind of hollow not magnetic conduction aluminum alloy framework, helps heat radiation.Permanent-magnetic clamp 8 and piston rod 9 usefulness viscose glues are fixed, and make that the gap character between permanent-magnetic clamp 8 and the coil 6 adds up to the gap value of calculating, and form air gap.Piston 10 and piston rod 9 all adopt beryllium bronze, and existing intensity is magnetic conduction not again.Cylinder 12 and cylinder flange 7 drive fits, cylinder 12 adopts alloyed steel to be easy to form rational roughness, and at the fitting surface of cylinder flange 7 and shell 2 positioning table of getting on the bus out, realize the centering of piston rod 9 and piston 10, this is by the control of the perpendicularity between the fitting surface of cylinder flange 7 and shell 2.Also can form the sealing configuration of moving-magnet exciter at the fitting surface of shell 2 seal groove of getting on the bus out.Permanent-magnetic clamp adopts integral loop, and the quality of avoiding the multi-disc assembly unit to produce is inhomogeneous.Permanent-magnetic clamp length is carried out suitable determining according to stroke and stitch length.Back pressure suction tude 1 realizes the balanced action of moving-magnet exciter static pressure.
Fig. 2 is that permanent-magnetic clamp is arranged and the field circuit signal.Permanent-magnetic clamp 8 is made up of two axial permanent magnetic rings and a radial permanent magnet ring; When coil 6 electric current alternations, the N utmost point and the S utmost point will exchange on the yoke 5, change moving direction thereby allow permanent-magnetic clamp 8 drive piston rod 9.
Fig. 3 is the trapezoidal connection diagram of yoke 5, and yoke 5 is reeled from inner ring by silicon steel plate 15, is wound into two cylinders that have groove and is spliced, and forms piston rod perforation 17, coil recess 18; The cylinder upper and lower surface cross section of splicing is trapezoidal for what be recessed into, and is connected for trapezoidal silicon steel plate cover plate 16 couplings of protruding with the cross section, guarantees that the magnetic resistance loss is little.
Claims (2)
1. moving-magnet exciter, column is housed in cylindrical housing props up the coil that hangs spring, yoke and inside thereof, cylinder embeds the cylinder flange, cylinder flange and shell centering cooperate, piston in the cylinder is fixedlyed connected with piston rod, the piston rod of permanent-magnetic clamp is posted on the surface, passes yoke and inner coil supports thereof and props up in column and hang spring center, it is characterized in that:
Described permanent-magnetic clamp is made up of two axial permanent magnetic rings and a radial permanent magnet ring, and the permanent-magnetic clamp material is the rubidium iron boron magnet;
Described yoke is wound into two cylinders that have groove by silicon steel plate and is spliced, and the cylinder upper and lower surface cross section of splicing is trapezoidal for what be recessed into, and is connected for the trapezoidal silicon steel plate cover plate that protrudes with the cross section.
2. moving-magnet exciter as claimed in claim 1 is characterized in that: be connected with mighty bond with piston rod behind the described permanent-magnetic clamp liner silicon steel plate; Described shell is connected the employing plane contact with the cylinder flange, have positioning table on the fitting surface of cylinder flange and shell, has seal groove on the fitting surface of shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200879211U CN201110257Y (en) | 2007-11-02 | 2007-11-02 | Movable magnetic vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200879211U CN201110257Y (en) | 2007-11-02 | 2007-11-02 | Movable magnetic vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110257Y true CN201110257Y (en) | 2008-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200879211U Expired - Fee Related CN201110257Y (en) | 2007-11-02 | 2007-11-02 | Movable magnetic vibrator |
Country Status (1)
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| CN (1) | CN201110257Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741211A (en) * | 2008-11-13 | 2010-06-16 | 中国电子科技集团公司第二十一研究所 | Linear motor for stirling refrigerator with axial magnetic path |
| CN101858325A (en) * | 2010-05-21 | 2010-10-13 | 浙江大学 | Direct-driving compressor of movable magnet type |
| CN101943629A (en) * | 2010-09-02 | 2011-01-12 | 中国人民解放军国防科学技术大学 | Low-temperature pneumatic vibration exciter for pneumatic vibration equipment |
| CN102259088A (en) * | 2011-06-13 | 2011-11-30 | 华中科技大学 | Miniature moving-magnet vibration exciter |
| CN103835912A (en) * | 2012-11-26 | 2014-06-04 | 海尔集团公司 | Liner compressor |
| CN104596751A (en) * | 2015-01-16 | 2015-05-06 | 宁波华斯特林电机制造有限公司 | Fatigue test device of plane spring |
| CN107976292A (en) * | 2017-12-22 | 2018-05-01 | 脉创测控装备科技（苏州）有限公司 | Efficient magnetic structure and vibration occurrence of equipment applied to vibration occurrence of equipment |
| CN108173409A (en) * | 2017-12-28 | 2018-06-15 | 陕西仙童科技有限公司 | A kind of Linearkompressor using moving-magnetic type linear motor |
| CN112523990A (en) * | 2020-11-25 | 2021-03-19 | 杭州电子科技大学 | Moving-coil linear compressor |
| CN112901445A (en) * | 2021-02-22 | 2021-06-04 | 杭州电子科技大学 | Double-coil linear compressor based on current magnetic effect |
| CN113495236A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration test system with background magnetic field |
| CN114452684A (en) * | 2020-11-10 | 2022-05-10 | 菲尔德森(江苏)生物技术有限公司 | Platelet-rich plasma extraction and separation kit and extraction method |
-
2007
- 2007-11-02 CN CNU2007200879211U patent/CN201110257Y/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741211A (en) * | 2008-11-13 | 2010-06-16 | 中国电子科技集团公司第二十一研究所 | Linear motor for stirling refrigerator with axial magnetic path |
| CN101741211B (en) * | 2008-11-13 | 2013-08-07 | 中国电子科技集团公司第二十一研究所 | Linear motor for stirling refrigerator with axial magnetic path |
| CN101858325A (en) * | 2010-05-21 | 2010-10-13 | 浙江大学 | Direct-driving compressor of movable magnet type |
| CN101858325B (en) * | 2010-05-21 | 2012-08-29 | 浙江大学 | Direct-driving compressor of movable magnet type |
| CN101943629A (en) * | 2010-09-02 | 2011-01-12 | 中国人民解放军国防科学技术大学 | Low-temperature pneumatic vibration exciter for pneumatic vibration equipment |
| CN102259088A (en) * | 2011-06-13 | 2011-11-30 | 华中科技大学 | Miniature moving-magnet vibration exciter |
| CN103835912B (en) * | 2012-11-26 | 2016-12-21 | 青岛海尔智能技术研发有限公司 | Linearkompressor |
| CN103835912A (en) * | 2012-11-26 | 2014-06-04 | 海尔集团公司 | Liner compressor |
| CN104596751A (en) * | 2015-01-16 | 2015-05-06 | 宁波华斯特林电机制造有限公司 | Fatigue test device of plane spring |
| CN104596751B (en) * | 2015-01-16 | 2017-09-26 | 宁波华斯特林电机制造有限公司 | A kind of fatigue test device of plane spring |
| CN107976292A (en) * | 2017-12-22 | 2018-05-01 | 脉创测控装备科技（苏州）有限公司 | Efficient magnetic structure and vibration occurrence of equipment applied to vibration occurrence of equipment |
| CN107976292B (en) * | 2017-12-22 | 2024-03-29 | 脉创测控装备科技（苏州）有限公司 | Efficient magnetic circuit structure applied to vibration generating equipment and vibration generating equipment |
| CN108173409A (en) * | 2017-12-28 | 2018-06-15 | 陕西仙童科技有限公司 | A kind of Linearkompressor using moving-magnetic type linear motor |
| CN113495236A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration test system with background magnetic field |
| CN113495236B (en) * | 2020-04-07 | 2024-06-11 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration test system with background magnetic field |
| CN114452684A (en) * | 2020-11-10 | 2022-05-10 | 菲尔德森(江苏)生物技术有限公司 | Platelet-rich plasma extraction and separation kit and extraction method |
| CN112523990A (en) * | 2020-11-25 | 2021-03-19 | 杭州电子科技大学 | Moving-coil linear compressor |
| CN112901445A (en) * | 2021-02-22 | 2021-06-04 | 杭州电子科技大学 | Double-coil linear compressor based on current magnetic effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |