CN102377287B - Shaft type linear motor - Google Patents
Shaft type linear motor Download PDFInfo
- Publication number
- CN102377287B CN102377287B CN201110192191.2A CN201110192191A CN102377287B CN 102377287 B CN102377287 B CN 102377287B CN 201110192191 A CN201110192191 A CN 201110192191A CN 102377287 B CN102377287 B CN 102377287B
- Authority
- CN
- China
- Prior art keywords
- pipe
- magnet
- peripheral part
- stator
- linear motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides a shaft type linear motor capable of enabling the efficiency of the motor to be reduced substantially even though a refrigerant flow path is arranged on the surface layer part of a stator. The shaft type linear motor comprises a shaft-shaped stator formed by arranging a plurality of magnets in a pipe and a rotor possessing a plurality of coils wound around the stator. A clearance is arranged between the inner circumference of the pipe and the peripheries of the magnets and is used as a flow path for the cooling of the surface layer part of the stator, so that the efficiency of the motor can be reduced substantially even though the refrigerant flow path is arranged on the surface layer part of the stator.
Description
Technical field
The present invention relates to the shaft shaped linear motor of the stator with rotor and shaft-like, the stator of this shaft-like arranges multiple magnet and forms in pipe, and this rotor has the surrounding being centered around this stator and the multiple coils be wound.
Background technology
In the shaft shaped linear motor of said structure, by making rotor move relative to stator, because flow big current in coil when large thrust will be produced, so the heating quantitative change of coil is large to coil supply electric current.The heat trnasfer that result coil produces is to the magnet of stator side, and the temperature of magnet raises.If like this, then the magnetic force Yin Wendu of magnet rises and reduces, and the efficiency of motor also reduces.As the technology solving such problem, in documents 1, disclose the shaft shaped linear motor of the refrigerant stream had for cooling magnet.
Patent documentation 1:JP JP 2003-209962 publication (Fig. 6).
But, in the 5th embodiment of patent documentation 1, stator skin section and stator center portion are respectively arranged with the stream of refrigerant.For the coolant path of skin section wherein, cover with the pipe of non magnetic thin plate outside magnet being enclosed in inner cylindrical structural member, form stream.But if formed the coolant path of skin section by such structure, then compared with not arranging the situation of refrigerant flow, magnet becomes large to the distance of coil, and thus the magnetic field at coil position place is weak, and the efficiency of motor reduces.
Summary of the invention
The present invention proposes in view of the foregoing, even if its object is to provide the shaft shaped linear motor that the efficiency of motor also can be made to reduce few when stator skin section is provided with refrigerant flow.
In order to solve the problem, the invention of technical scheme 1 is shaft shaped linear motor, has: the stator of shaft-like, and its multiple magnet of arrangement in pipe forms; Rotor, multiple coils that its mode with the surrounding being centered around this stator reels; It is characterized in that, between the inner peripheral portion and the peripheral part of described magnet of described pipe, be provided with the gap formed by the peripheral part of the inner peripheral portion of described pipe and described magnet, using this gap as the cooling stream being used for making cooling fluid flow.
The shaft shaped linear motor of invention as described in technical scheme l of technical scheme 2, is characterized in that, the surface of the inner peripheral portion of described pipe is formed as concaveconvex shape, and described gap is formed by the peripheral part of the recess of the inner peripheral portion of described pipe and described magnet.
The shaft shaped linear motor of invention as described in technical scheme 1 or 2 of technical scheme 3, is characterized in that, the surface of the peripheral part of described magnet is formed as concaveconvex shape, and described gap is formed by the inner peripheral portion of the recess of the peripheral part of described magnet and described pipe.
The shaft shaped linear motor of invention as described in technical scheme 1 of technical scheme 4, is characterized in that, be provided with multiple intercommunicating pore on the tube, and described multiple intercommunicating pore makes the peripheral part of this pipe and described first cooling fluid communication.
The invention of technical scheme 5 is a kind of shaft shaped linear motor, has: the stator of shaft-like, and its multiple magnet of arrangement and multiple magnetic component in pipe form; Rotor, multiple coils that its mode with the surrounding being centered around this stator is arranged, it is characterized in that, the gap formed by the inner peripheral portion of described pipe and the peripheral part of described magnet and the peripheral part of described magnetic component is provided with, using this gap as the cooling stream being used for making cooling fluid flow between the inner peripheral portion of described pipe and the peripheral part of the peripheral part of described magnet and described magnetic component.
The shaft shaped linear motor of invention as described in technical scheme 5 of technical scheme 6, it is characterized in that, the surface of the inner peripheral portion of described pipe is formed as concaveconvex shape, and described cooling stream is the gap formed by the recess of the inner peripheral portion of described pipe and the peripheral part of described magnet and the peripheral part of described magnetic component.
The shaft shaped linear motor of invention as described in technical scheme 5 or 6 of technical scheme 7, it is characterized in that, the surface of the peripheral part of the surface of the peripheral part of described magnet and described magnetic component is formed as concaveconvex shape, and described cooling stream is the gap formed by the recess of peripheral part of the recess of the peripheral part of described magnet and described magnetic component and the inner peripheral portion of described pipe.
The shaft shaped linear motor of invention as described in technical scheme 5 of technical scheme 8, is characterized in that, be provided with multiple through hole on the tube, and described multiple through hole makes the peripheral part of this pipe and described first cooling fluid communication.
According to the invention of technical scheme 1, gap is provided with between the inner peripheral portion and the peripheral part of magnet of pipe, using the cooling stream of this gap as stator skin section, even if thus when stator skin section is provided with refrigerant flow, the efficiency of motor also can be made to reduce few.
According to the invention of technical scheme 2, because the surface of the inner peripheral portion of pipe is formed as concaveconvex shape, form gap by the recess of pipe inner peripheral portion and the peripheral part of magnet, so this gap can be used as the cooling stream of stator skin section.
According to the invention of technical scheme 3, the surface of the peripheral part of magnet is formed as concaveconvex shape, forms gap by the recess of magnet peripheral part and the inner peripheral portion of pipe, thus this gap can be used as the cooling stream of stator skin section.
According to the invention of technical scheme 4, the multiple intercommunicating pores pipe of multiple magnet being provided with the cooling fluid communication making the peripheral part of this pipe and stator skin section are had in internal arrangement, thus cooling fluid can be sprayed from intercommunicating pore to rotor, thus can not only stator be cooled, can also cooled rotor.
According to the invention of technical scheme 5, gap is provided with between the inner peripheral portion of pipe and the peripheral part of the peripheral part of magnet and magnetic component, using the cooling stream of this gap as stator skin section, even if thus when stator skin section is provided with refrigerant flow, the efficiency of motor also can be made to reduce few.
According to the invention of technical scheme 6, the surface of the inner peripheral portion of pipe is formed as concaveconvex shape, forms gap by the peripheral part of the recess of pipe inner peripheral portion and the peripheral part of magnet and magnetic component, thus this gap can be used as the cooling stream of stator skin section.
According to the invention of technical scheme 7, the surface of the surface of the peripheral part of magnet and the peripheral part of magnetic component is formed as concaveconvex shape, form gap by the recess of the peripheral part of magnet and the recess of the peripheral part of magnetic component and the inner peripheral portion of pipe, thus this gap can be used as the cooling stream of stator skin section.
According to the invention of technical scheme 8, the multiple intercommunicating pores pipe of multiple magnet and multiple magnetic component being provided with the cooling fluid communication making the peripheral part of this pipe and stator skin section are had in internal arrangement, thus cooling fluid can be sprayed from intercommunicating pore to rotor, thus can not only stator be cooled, can also cooled rotor.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the shaft shaped linear motor as one embodiment of the present of invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the cutaway view of the shaft shaped linear motor as other embodiments of the present invention.
Fig. 4 is the A-A cutaway view forming irregular example in pipe side.
Fig. 5 A, Fig. 5 B are the A-A cutaway views of the example being provided with the intercommunicating pore that the peripheral part of pipe is communicated with first flow path on pipe.
Embodiment
Below, the shaft shaped linear motor as an embodiment of the invention is described in detail based on accompanying drawing.
[the first embodiment]
As shown in Figure 1, shaft shaped linear motor 1 has the stator 2 of shaft-like and is configured to concentric rotor 3 with the stator 2 of this shaft-like.
Multiple coils 4 that the mode that rotor 3 is built-in with the surrounding being centered around stator 2 reels, by controlling the electric current of flowing in these coils 4, produce thrust, thus rotor 3 move linearly between magnet 5 and coil 4 along stator 2.
Stator 2 is the pipe 6 internal arrangement multiple magnet 5 in the cylindrical shape formed by nonmagnetic material material, is waited being joined together in the two ends of pipe 6 and end cap 7,8 by welding, avoids inner magnet 5 to fly out.As the stream of the cooling fluid on stator 2, the skin section of stator 2 is provided with first flow path 10, the central part of stator 2 is provided with the second stream 11.In addition, both can be the gases such as air as cooling fluid, also can be water, wet goods liquid.
The end cap 7 of side is provided with supply port 13, described supply port 13 connects the pipe arrangement from cooling fluid supply apparatus (not shown) such as the pumps for supplying cooling fluid, further, the end cap 7 of side is provided with supply port 13 respectively with the supply passageway 15 of the first and second fluid communication.In addition, the end cap 8 of opposite side is provided with the outlet 14 of the cooling fluid expulsion that have passed in stator 2, and, the end cap 8 of opposite side is provided with the drain passageway 16 that the first and second streams are communicated with outlet 14 respectively.
Magnet 5 is roughly cylindrical shape, as shown in Figure 2, outer peripheral face has protuberance 20 and recess 21, has through hole through in the orientation of magnet 5 at central part.The gap formed by the inner peripheral portion of the recess 21 on the outer peripheral face of this magnet 5 and pipe 6 forms first flow path 10.In addition, the through hole of the central part of magnet 5 forms the second stream 11.At this, in order to form first flow path 10, in the total length of stator 2, make recess 21 phase place in a rotational direction of adjacent magnets 5 consistent.In addition, if the length L=L/2+L/2 of the contact circular arc making protuberance 20 contact with the inner peripheral portion of pipe 6 is less than 50% of the circumferential length of the inner peripheral portion of pipe, even if then adjacent magnet 5 phase place is in a rotational direction inconsistent, the part that the recess that also can produce adjacent magnet coincides with one another, thus can guarantee first flow path.
The shaft shaped linear motor 1 of said structure, never illustrated cooling fluid supply apparatus supplies cooling fluid to the supply port 13 of end cap 7, and then cooling fluid is flowed in the first and second streams by supply passageway 15, thus the magnet 5 of stator 2 is cooled.About first flow path, between the inner peripheral portion and the peripheral part of magnet 5 of pipe 6, be provided with gap, this gap is the cooling stream of stator 2 skin section, thus, even if when stator 2 skin section is provided with refrigerant flow, the efficiency of motor also can be made to reduce few.
[the second embodiment]
Below, the second embodiment is described.The shaft shaped linear motor 1 of the second embodiment, as shown in Figure 3, in order to improve the magnetic characteristic of stator 2, is provided with magnetic component 22 between magnet 5 and magnet 5.The shaft shaped linear motor 1 of the present embodiment, also same with the first embodiment, as shown in Figure 2, be formed with protuberance 20 and recess 21 at the outer peripheral face of magnet 5, be formed with through hole through in the orientation of magnet 5 at central part.In addition, about magnetic component 22, also same with magnet 5, form the cross sectional shape (be formed with protuberance 20 and recess 21 at outer peripheral face, be formed with through hole through in the orientation of magnet 5 at central part) shown in Fig. 2.Thus, the shaft shaped linear motor 1 of the present embodiment, the gap formed by the recess 21 on the peripheral part of this magnet 5 and magnetic component 22 and the inner peripheral portion of pipe 6 forms first flow path 10, and the through hole of the central part of magnet 5 and magnetic component 22 forms the second stream 11.
In the shaft shaped linear motor 1 of the second embodiment formed like this, about first flow path, gap is provided with between the inner peripheral portion and the peripheral part of magnet 5 and magnetic component 22 of pipe 6, this gap is the cooling stream of the skin section of stator 2, thus, even if when the skin section of stator 2 is provided with refrigerant flow, the efficiency of motor also can be made to reduce few.
In addition, in the first and second embodiment, the peripheral part of magnet 5 and magnetic component 22 is formed as concaveconvex shape, but also as shown in Figure 4, the inner peripheral surface of pipe 6 can be formed protuberance 23 and recess 24, and inner peripheral portion surface is formed as concaveconvex shape.Under magnet 5 and the irregular situation of magnetic component 22 side tool, in order to form first flow path 10, need the operation making magnet 5 consistent with the phase place of the recess 21 of magnetic component 22 in the total length of stator 2, but when pipe 6 side arranges concavo-convex, do not need such operation.
In addition, all can arrange concavo-convex in magnet 5 side and pipe 6 side.In addition, forming the gap of first flow path 10 to arrange, must not arrange concavo-convex in magnet side and pipe 6 side, also the external diameter of magnet 5 can be set smaller than the internal diameter of pipe 6 and the gap that produces as first flow path 10.
And, no matter in which embodiment, as shown in Fig. 5 A, 5B, pipe 6 can arrange the multiple intercommunicating pores 25 be communicated with first flow path 10 by the peripheral part of pipe 6.If like this, then because to make in first flow path 10 the cooling fluid of flowing spray from intercommunicating pore 25 to rotor 3, so can not only stator be cooled, can also cooled rotor simultaneously.As long as arrange multiple intercommunicating pore 25 equably on the whole length direction of pipe 6, no matter rotor is positioned at along that position of stator, and the cooling fluid of flowing in first flow path 10 can both be made to spray from intercommunicating pore 25 towards rotor.In addition, the configuration of intercommunicating pore 25 can be made to concentrate on specific position, such as, if by intercommunicating pore 25 concentrated setting in the high position of the stop frequency of the high position of the acceleration frequency of rotor 3 or rotor, then can cooled rotor efficiently, and the consumption of cooling fluid can be reduced.
And the present invention, except the mode that above-mentioned multiple embodiments are recorded, can also carry out various change, improvement based on the knowledge of technical staff.
Claims (8)
1. a shaft shaped linear motor,
Have:
The stator of shaft-like, its multiple magnet of arrangement in pipe forms,
Rotor, it has the multiple coils reeled in the mode of the surrounding around this stator;
It is characterized in that,
The gap formed by the peripheral part of the inner peripheral portion of described pipe and described magnet is provided with, using this gap as the first cooling stream being used for making cooling fluid flow between the inner peripheral portion and the peripheral part of described magnet of described pipe.
2. shaft shaped linear motor as claimed in claim 1, is characterized in that, the surface of the inner peripheral portion of described pipe is formed as concaveconvex shape, and described cooling stream is the gap formed by the peripheral part of the recess of the inner peripheral portion of described pipe and described magnet.
3. the shaft shaped linear motor as described in claim l or 2, is characterized in that, the surface of the peripheral part of described magnet is formed as concaveconvex shape, and described cooling stream is the gap formed by the inner peripheral portion of the recess of the peripheral part of described magnet and described pipe.
4. shaft shaped linear motor as claimed in claim 1, it is characterized in that, be provided with multiple intercommunicating pore on the tube, described multiple intercommunicating pore makes the peripheral part of this pipe and described first cooling fluid communication.
5. a shaft shaped linear motor,
Have:
The stator of shaft-like, its multiple magnet of arrangement and multiple magnetic component in pipe form,
Rotor, it has the multiple coils reeled in the mode of the surrounding around this stator;
It is characterized in that,
The gap formed by the inner peripheral portion of described pipe and the peripheral part of described magnet and the peripheral part of described magnetic component is provided with, using this gap as the first cooling stream being used for making cooling fluid flow between the inner peripheral portion of described pipe and the peripheral part of the peripheral part of described magnet and described magnetic component.
6. shaft shaped linear motor as claimed in claim 5, it is characterized in that, the surface of the inner peripheral portion of described pipe is formed as concaveconvex shape, and described cooling stream is the gap formed by the recess of the inner peripheral portion of described pipe and the peripheral part of described magnet and the peripheral part of described magnetic component.
7. the shaft shaped linear motor as described in claim 5 or 6, it is characterized in that, the surface of the peripheral part of the surface of the peripheral part of described magnet and described magnetic component is formed as concaveconvex shape, and described cooling stream is the gap formed by the recess of peripheral part of the recess of the peripheral part of described magnet and described magnetic component and the inner peripheral portion of described pipe.
8. shaft shaped linear motor as claimed in claim 5, it is characterized in that, be provided with multiple through hole on the tube, described multiple through hole makes the peripheral part of this pipe and described first cooling fluid communication.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-187615 | 2010-08-06 | ||
| JP2010187615A JP5627339B2 (en) | 2010-08-06 | 2010-08-06 | Shaft type linear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102377287A CN102377287A (en) | 2012-03-14 |
| CN102377287B true CN102377287B (en) | 2015-07-01 |
Family
ID=45795429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110192191.2A Active CN102377287B (en) | 2010-08-06 | 2011-07-05 | Shaft type linear motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5627339B2 (en) |
| CN (1) | CN102377287B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016025975A1 (en) * | 2014-08-22 | 2016-02-25 | Anca Pty Ltd | Linear motor |
| JP7116661B2 (en) * | 2018-11-01 | 2022-08-10 | Ｋｙｂ株式会社 | Cylindrical linear motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1770595A (en) * | 2004-09-16 | 2006-05-10 | 三菱电机株式会社 | Ring type sintered magnet |
| CN1969444A (en) * | 2004-06-21 | 2007-05-23 | 柯尼卡美能达医疗印刷器材株式会社 | Method of producing linear motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10127035A (en) * | 1996-10-16 | 1998-05-15 | Canon Inc | Linear motor and stage device using the motor, and aligner |
| JP4134560B2 (en) * | 2002-01-16 | 2008-08-20 | 株式会社ニコン | Linear motor and stage device |
| WO2009041185A1 (en) * | 2007-09-25 | 2009-04-02 | Kabushiki Kaisha Yaskawa Denki | Cylindrical linear motor, and its stator manufacturing method |
-
2010
- 2010-08-06 JP JP2010187615A patent/JP5627339B2/en active Active
-
2011
- 2011-07-05 CN CN201110192191.2A patent/CN102377287B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1969444A (en) * | 2004-06-21 | 2007-05-23 | 柯尼卡美能达医疗印刷器材株式会社 | Method of producing linear motor |
| CN1770595A (en) * | 2004-09-16 | 2006-05-10 | 三菱电机株式会社 | Ring type sintered magnet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102377287A (en) | 2012-03-14 |
| JP2012039840A (en) | 2012-02-23 |
| JP5627339B2 (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10989308B1 (en) | Sealing device with convertible magnetic sealing medium | |
| US8373326B2 (en) | Axial gap motor, compressor, motor system, and power generator | |
| CN103563219B (en) | Electric rotating machine | |
| JP2012518376A5 (en) | ||
| US7504753B2 (en) | Motor | |
| US20120025642A1 (en) | Rotating electric machine | |
| US20120161556A1 (en) | Superconducting electric motor | |
| CN110247485A (en) | The stator of rotating electric machine | |
| US20190049158A1 (en) | Wire, heat exchanger, and magnetic heat pump device | |
| CN102377287B (en) | Shaft type linear motor | |
| CN111030341B (en) | Low-power-consumption high-speed double-coil magnetic steel brushless direct current motor | |
| JP2017192201A (en) | Stator of rotary electric machine | |
| JP2010148230A (en) | Toroidal winding motor | |
| CN105896765B (en) | The stator module for accommodating shell and using the shell of stator for motor | |
| KR101372291B1 (en) | Rotor core and superconducting rotating machine with the rotor core | |
| JP2012143050A (en) | Superconducting motor | |
| CN205406219U (en) | Electricity permanent magnet | |
| CN104377852B (en) | Magneto, refrigeration compressor and air conditioning unit | |
| JP2009081953A (en) | Rotating electric machine | |
| JP2014230408A (en) | Rotary electric machine | |
| US11451102B2 (en) | Rotary electric machine | |
| WO2017077813A1 (en) | Axial-gap rotating electric machine | |
| CN208738934U (en) | Motor, compressor and air-conditioning | |
| JP2020188560A (en) | Rotary electric machine | |
| WO2018176942A1 (en) | Rotor used for electric motor, electric motor and compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |