WO2004088827A1 - Structure de refroidissement pour moteur lineaire - Google Patents

Structure de refroidissement pour moteur lineaire Download PDF

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Publication number
WO2004088827A1
WO2004088827A1 PCT/JP2004/004362 JP2004004362W WO2004088827A1 WO 2004088827 A1 WO2004088827 A1 WO 2004088827A1 JP 2004004362 W JP2004004362 W JP 2004004362W WO 2004088827 A1 WO2004088827 A1 WO 2004088827A1
Authority
WO
WIPO (PCT)
Prior art keywords
armature
linear motor
cooling
mounting plate
intermediate plate
Prior art date
Application number
PCT/JP2004/004362
Other languages
English (en)
Japanese (ja)
Inventor
Yasuhiro Miyamoto
Takahisa Yamada
Original Assignee
Kabushiki Kaisha Yaskawa Denki
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kabushiki Kaisha Yaskawa Denki filed Critical Kabushiki Kaisha Yaskawa Denki
Publication of WO2004088827A1 publication Critical patent/WO2004088827A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator

Definitions

  • the present invention relates to a linear motor cooling structure capable of improving cooling performance without increasing generation loss of a motor, suppressing thermal deformation of a table, and suppressing an increase in the shape of a motor mover.
  • FIG. 5 is a front sectional view of a linear motor showing the first related art.
  • reference numeral 1 denotes a fixed base
  • 2 denotes guide rails provided on both right and left ends of the fixed base 1
  • 3 denotes a slider that forms a linear guide in pairs with the guide rail 2.
  • 4 is a linear motor
  • 5 is a plate-shaped field yoke fixed to the fixed base 1 so as to face each other in the vertical direction
  • 6 is a field yoke 5 (in the direction perpendicular to the paper) that the magnetic poles are alternately different.
  • a plurality of permanent magnets are provided
  • 7 is an armature mounting plate for fixing the armature
  • 8 is provided opposite to the permanent magnet 6 via a magnetic gap, and is made of an I-shaped silicon steel plate, for example.
  • Reference numeral 9 denotes an armature coil wound around the winding accommodating portion of each armature core 8.
  • the field yoke 5 and the permanent magnet 6 constitute a stator (field section), and the armature core 8 and the armature coil 9 constitute a mover (armature section).
  • the above-mentioned armature unit is configured such that, after winding the armature coil 9 in the winding accommodating portion of each armature core 8, each armature core 8 is sequentially connected along a predetermined straight path. This is a completed block-build armature.
  • connection board made of a glass epoxy material for facilitating the connection process of the crossover and the neutral point of the coil conductor constituting the armature coil
  • 11 is A mold resin for fixing the armature coil 9 and the connection board 10
  • 15 is a table provided on the armature fixing plate 7.
  • the armature fixing plate 7 is secured by passing bolt screws 16 having male threads through the through holes 15a from the table 15 side, and then fixing the armature. It is screwed into the female screw 7 a provided on the plate 7 and fastened to the table 15.
  • the linear motor 4 is generally provided with an optical linear encoder composed of a linear scale and a sensor head in order to detect the position of the mover in the moving direction, but is not shown in FIG. I have.
  • the linear motor 4 when a current is applied to the armature coil 9 from a power source (not shown), the linear motor 4 generates a thrust along the longitudinal direction of the permanent magnet due to the electromagnetic action of the armature and the field. Perform a linear motion (see, for example, JP-A-2000-37070 and JP-A-2000-333432).
  • FIG. 6 is a plan view of a linear motor showing a second related art, and shows an overall configuration of an armature and a cooling member mounted on a base plate.
  • 30 is a linear motor armature
  • 31 is a base plate
  • 32 is an armature core
  • 33 is a coil
  • 34 is a flat cooling tube
  • 35 and 36 are a holder
  • 37 is a folded member.
  • the linear motor armature 30 includes a plurality of armature cores 32 each having an I-shaped electromagnetic steel sheet laminated thereon and a coil 33 wound around a concave portion thereof.
  • the armature blocks are arranged and arranged, and a cooling member for cooling the armature blocks is continuously S-shaped from one end 34 a to the other end 34 b so as to sew the gap between the adjacent armature blocks. It is constituted by a flat cooling pipe 34 of a flat hollow shape, which is disposed in a folded state.
  • both ends 34 a and 34 b of the elongate cooling pipe 34 are welded and connected to a first manifold 35 and a second manifold 36.
  • the armature core 32 is fixed to the base plate 31 with bolt screws (not shown).
  • the conventional cooling structure removes heat from the coil by flowing the refrigerant near the coil and transfers the coil to the outside of the motor.
  • the cooling performance of the armature is limited only by the flat cooling pipe near the coil, so the cooling performance is limited. In other words, part of the heat generated by the armature coil is transmitted to the armature core teeth on which the coil is wound, and is easily transferred to the armature mounting plate and the table. Was adversely affected.
  • the flat cooling pipe has a wavy shape as shown in the figure, and is arranged so as to sew between the coils.Therefore, the mover of the return motor is provided by the presence of the refrigerant pipe further outside both ends of the coil end. The shape (width dimension) was to be increased.
  • the present invention has been made to solve the above-described problems, and it is an object of the present invention to improve cooling performance without increasing motor generation loss, suppress thermal deformation of a table, and suppress an increase in motor mover shape. It is an object of the present invention to provide a cooling structure for a reversible motor that can perform the cooling operation.
  • the invention according to the cooling structure for a linear motor according to claim 1 is characterized in that two field yokes made of magnetic materials are disposed on a fixed base and are vertically opposed to each other. And a field part comprising a plurality of permanent magnets having different magnetic poles alternately along the field yoke; an armature core and an armature core arranged in parallel with the fixed base via a gap between the field parts; An armature portion comprising an armature coil wound around the armature; A linear motor, comprising: an armature mounting plate provided on an upper portion of the mounting plate for fixing the armature portion; and a table provided on the upper portion of the armature portion for mounting a work. An intermediate plate is provided between the armature mounting plate and the table, and is disposed inside the intermediate plate and the armature mounting plate so as to be continuously folded in the moving direction of the armature portion. A cooling passage is provided.
  • the refrigerant flowing through the cooling passage flows from the intermediate plate and is discharged from the armature mounting plate. It is.
  • the cooling passage is formed of a copper cooling pipe.
  • the table, the intermediate plate, and the armature mounting plate are integrally fastened by a Bonoleto screw. is there.
  • the intermediate plate and the armature mounting plate have a refrigerant inlet, a seventh medium outlet, and the intermediate medium.
  • a joint for connecting a refrigerant outlet of the plate and a refrigerant inlet of the armature mounting plate is provided. .
  • FIG. 1 is a front sectional view of a linear motor showing an embodiment of the present invention
  • FIG. 2 is a side view of a luer motor mover of FIG. 1.
  • the cross section along the line A is broken
  • Bonoreto 21 and 22 are the cross sections along the line BB and C-C in Figure 1, respectively.
  • Figure 3 shows the refrigerant passage in the linear motor mover.
  • FIG. 4 is a front view showing a state in which inlet and outlet joints are connected
  • FIG. 4 is a schematic view for explaining the flow of refrigerant in the refrigerant passage in the present embodiment
  • FIG. 5 is a linear motor showing the first prior art.
  • FIG. 6 is a plan view of a linear motor showing a second conventional technique, and shows an overall configuration of an armature mounted on a base plate and a cooling member.
  • FIG. 1 is a front sectional view of a linear motor showing an embodiment of the present invention.
  • FIG. 2 is a side view of the linear motor mover of FIG. 1, in which the refrigerant passage 17 has a cross-section taken along line A--A in FIG. 1, and the bolts 21 and 22 have The cross-sections along the lines B-B and 'C-C in Fig. 1 are broken.
  • FIG. 3 is a front view showing a state in which the joints at the inlet and outlet of the refrigerant passage in the linear motor mover are connected.
  • the same components as those of the related art are denoted by the same reference numerals and the description thereof will be omitted, and only different points will be described.
  • reference numeral 12 denotes an intermediate plate
  • reference numeral 17 denotes a cooling passage.
  • 17 a is a refrigerant inlet of the refrigerant passage 17 provided in the intermediate plate 12
  • 17 b is a refrigerant outlet of the intermediate plate 12 side
  • 17 c is provided in the armature mounting plate 7.
  • a refrigerant inlet of the refrigerant passage 17, 17 d is a refrigerant outlet on the armature mounting plate 7 side
  • 23 is a joint.
  • the intermediate plate 12 is provided between the armature mounting plate 7 and the table 15 and is continuously folded inside the intermediate plate 12 and the armature mounting plate 7 in the moving direction of the armature portion.
  • a cooling passage 17 is provided.
  • the refrigerant flowing into the cooling passage 17 flows into the intermediate plate 12 and is discharged from the armature mounting plate 7.
  • the cooling passage 1 mm is made up of a copper cooling pipe.
  • the table 15, the intermediate plate 12 and the armature mounting plate 7 are fastened to the body by bolt screws 21 and 22.
  • the armature mounting plate 7 is provided with female screws 7a.Bolt screws 21 and 22 are screwed into each female screw 7a, and the table 15, intermediate plate 12 and armature mounting plate 7 are integrated. You.
  • the refrigerant inlet 17 b of the intermediate plate 12 and the refrigerant inlet 17 c of the armature mounting plate 7 are connected to the refrigerant inlet and the refrigerant outlet of the intermediate plate 12 and the armature mounting plate 7. Joints 23 are provided.
  • FIG. 4 is a schematic diagram for explaining the flow of the refrigerant in the refrigerant passage in this embodiment.
  • the refrigerant inlets 17a, 17c, 17b, 17d are circled. The part enclosed by is shown.
  • the refrigerant flows into the refrigerant inlet 17a of the intermediate plate 12 from an external refrigerant supply source (not shown), the refrigerant cools the intermediate plate 12 and then flows out of the refrigerant outlet 17b.
  • the refrigerant flowing out from the refrigerant outlet 17b enters the refrigerant inlet 17c of the armature mounting plate 7, cools the armature mounting plate 7, and flows out from the refrigerant outlet 17d.
  • the armature mounting plate 7 is cooled later.
  • the intermediate plate 12 is provided between the armature mounting plate 7 and the table 15, and the armature portion is provided inside the intermediate plate 12 and inside the armature mounting plate 7. Since the cooling passages 17 are provided so as to be continuously folded in the moving direction, heat generated by the armature coil 9 of the linear motor is cooled by the cooling passages provided in the intermediate plate 12 and the armature mounting plate 7, respectively. The refrigerant is removed by flowing the refrigerant through the cooling medium 17, thereby improving the cooling performance without increasing the generation loss of the motor and suppressing the thermal deformation of the table 15. As a result, it is possible to minimize the influence of deterioration in accuracy due to thermal deformation due to the temperature rise in Table 15. In addition, the linear guide attached to the table 15 ⁇ can maintain good positioning accuracy of the table 15 without adversely affecting a linear scale (not shown).
  • the intermediate plate 12 having a small heat exchange amount by the refrigerant is cooled first.
  • the temperature rise due to the heat exchange of the refrigerant in the intermediate plate 12 that directly contacts the table 15 is minimized. Can be suppressed.
  • the cooling passage 17 is formed of a copper cooling pipe, the danger of electrolytic corrosion can be eliminated even when water is used as the refrigerant.
  • the table 15, the intermediate plate 12 and the armature mounting plate 7 are integrally fastened by the bolt screws 21 and 22, the contact thermal resistance between each member can be improved, and the heat generated in the armature portion The generated heat can be effectively radiated to the cooling passage 17.
  • the refrigerant inlet and outlet of the intermediate plate 12 and the armature mounting plate 7 are Since the joint for connecting the refrigerant inlet and the outlet is provided, the connection structure of the refrigerant inlet and the outlet of the intermediate plate 12 and the armature mounting plate 7 can be made compact and simple.
  • the present invention relates to a linear motor cooling structure, and is particularly useful as a cooling structure for a linear motor mover having a magnetic attraction force canceling structure.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Linear Motors (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne une structure de refroidissement pour un moteur linéaire (4). Cette structure comprend des parties d'inducteur, composées de deux culasses de champ (5) constituées d'un corps magnétique agencé de façon opposée sur une base stationnaire (1) à intervalles verticaux et d'aimants permanents (6) présentant différents pôles magnétiques alternés le long des culasses de champ (5), des parties d'induit constituées de noyaux d'induit (8) placés parallèlement à la base stationnaire (1), entre les parties d'inducteur avec un écartement entre les noyaux, et des bobines d'induit (9) enroulées sur les noyaux d'induit (8), une plaque d'installation d'induit (7), placée au-dessus de la partie d'induit et sur laquelle cette partie d'induit est fixée, ainsi qu'une table (15) placée au-dessus de la plaque d'installation d'induit (7) et sur laquelle la pièce est fixée, une plaque intermédiaire (12) étant placée entre la plaque d'installation d'induit (7) et la table (15). Une voie de refroidissement (17) est également ménagée à l'intérieur de la plaque intermédiaire (12) et de la plaque d'installation d'induit (7), de façon à être pliée en continu dans le sens de déplacement des parties d'induit.
PCT/JP2004/004362 2003-03-31 2004-03-26 Structure de refroidissement pour moteur lineaire WO2004088827A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003095413A JP2004304932A (ja) 2003-03-31 2003-03-31 リニアモータの冷却構造
JP2003-095413 2003-03-31

Publications (1)

Publication Number Publication Date
WO2004088827A1 true WO2004088827A1 (fr) 2004-10-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2004/004362 WO2004088827A1 (fr) 2003-03-31 2004-03-26 Structure de refroidissement pour moteur lineaire

Country Status (3)

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JP (1) JP2004304932A (fr)
TW (1) TWI272755B (fr)
WO (1) WO2004088827A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016146003A1 (fr) * 2015-03-16 2016-09-22 中国科学院宁波材料技术与工程研究所 Dispositif d'isolation thermique de moteur
US20190109501A1 (en) * 2017-10-10 2019-04-11 Mts Systems Corporation Linear motor with armature cooling channels

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5029830B2 (ja) * 2007-12-27 2012-09-19 株式会社安川電機 リニアモータおよびそれを備えたテーブル送り装置
JP5460991B2 (ja) * 2008-09-29 2014-04-02 オークマ株式会社 リニアモータの固定子
KR101302789B1 (ko) 2012-01-31 2013-09-02 주식회사 효성 모터의 엔드 플레이트
JP2014042423A (ja) 2012-08-23 2014-03-06 Sanyo Denki Co Ltd リニアモータ
JP5908819B2 (ja) * 2012-09-19 2016-04-26 オークマ株式会社 リニアモータ
EP2808986B1 (fr) * 2013-05-27 2016-03-09 Etel S. A.. Corps de refroidissement pour moteur linéaire
CN107666211A (zh) * 2016-07-27 2018-02-06 大银微系统股份有限公司 马达一次侧的传热机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11504199A (ja) * 1996-02-08 1999-04-06 クラウス−マツフアイ アクチエンゲゼルシヤフト リニアモータ
JP2002044928A (ja) * 2000-07-21 2002-02-08 Sodick Co Ltd リニアモータ
JP2002165433A (ja) * 2000-11-21 2002-06-07 Yaskawa Electric Corp リニアモータ
WO2003005538A1 (fr) * 2001-07-06 2003-01-16 Samick Lms Co.,Ltd. Moteur lineaire comprenant un systeme de refroidissement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11504199A (ja) * 1996-02-08 1999-04-06 クラウス−マツフアイ アクチエンゲゼルシヤフト リニアモータ
JP2002044928A (ja) * 2000-07-21 2002-02-08 Sodick Co Ltd リニアモータ
JP2002165433A (ja) * 2000-11-21 2002-06-07 Yaskawa Electric Corp リニアモータ
WO2003005538A1 (fr) * 2001-07-06 2003-01-16 Samick Lms Co.,Ltd. Moteur lineaire comprenant un systeme de refroidissement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016146003A1 (fr) * 2015-03-16 2016-09-22 中国科学院宁波材料技术与工程研究所 Dispositif d'isolation thermique de moteur
US20190109501A1 (en) * 2017-10-10 2019-04-11 Mts Systems Corporation Linear motor with armature cooling channels
US10992193B2 (en) * 2017-10-10 2021-04-27 Mts Systems Corporation Linear motor with armature cooling channels

Also Published As

Publication number Publication date
JP2004304932A (ja) 2004-10-28
TWI272755B (en) 2007-02-01
TW200507416A (en) 2005-02-16

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