JPH0438162A - Magnetic coupling cooling structure - Google Patents
Magnetic coupling cooling structureInfo
- Publication number
- JPH0438162A JPH0438162A JP14248090A JP14248090A JPH0438162A JP H0438162 A JPH0438162 A JP H0438162A JP 14248090 A JP14248090 A JP 14248090A JP 14248090 A JP14248090 A JP 14248090A JP H0438162 A JPH0438162 A JP H0438162A
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- housing
- cooling housing
- magnetic
- cooling structure
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 172
- 230000008878 coupling Effects 0.000 title claims abstract description 20
- 238000010168 coupling process Methods 0.000 title claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 20
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 239000003507 refrigerant Substances 0.000 claims description 40
- 239000000126 substance Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 239000000112 cooling gas Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002826 coolant Substances 0.000 abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000543375 Sideroxylon Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は真空ポンプ又は圧縮機等の回転機械の回転体に
回転力を伝達するだめの磁気継手の冷却構造に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cooling structure for a magnetic coupling that transmits rotational force to a rotating body of a rotating machine such as a vacuum pump or a compressor.
磁気継手は機械的手段によらず動力を伝達する機構であ
り、回転軸に動力を伝達するため該回転軸を外部に導く
貫通部を設ける必要がなく回転機械の内部を外部雰囲気
から完全に遮断することかできるものである。このため
回転機械内部からの流体の漏れ、若しくは回転機械内部
への流体の侵入を嫌う場合は有効な動力伝達手段であり
、薬液ポンプ等に応用されている。A magnetic coupling is a mechanism that transmits power without using mechanical means, and since it transmits power to a rotating shaft, there is no need to provide a through part that guides the rotating shaft to the outside, completely shielding the inside of the rotating machine from the outside atmosphere. It is something that can be done. Therefore, it is an effective power transmission means when leakage of fluid from inside a rotating machine or intrusion of fluid into the inside of a rotating machine is to be avoided, and it is applied to chemical liquid pumps and the like.
磁気継手は開口部か全く無いキャンを介して動力伝達を
行なうため密封性が完璧である。しかしなから、導電性
を有する材料てキャンを製作した場合、回転する磁束の
貫通によりキャンに渦電流が生し熱か発生ずる。キャン
の材料として木材、プラスチック等の絶縁物を用いれば
渦ＴＬ流は流れないから、これによる熱の発生は無いが
、強度や密封性等の制約により通常、非磁性体金属とい
われるステンレス銅等が使用される。しかしながらこれ
らの金属は導電体であるため磁束を切ることにより渦電
流が発生し、この渦電流のジュール熱による加熱は避け
られない。この渦電流による発熱量は小型の装置におい
ても数百Ｗにも達し、冷却か不十分だと周囲部品の温度
は数分で数百度に上昇する。この過熱は磁石の磁力低下
を招き、動力伝達不能（脱調）に陥ってしまう。Magnetic couplings transmit power through cans with no openings at all, so they are perfectly sealed. However, when the can is made of conductive material, eddy currents are generated in the can due to the penetration of the rotating magnetic flux, which generates heat. If an insulating material such as wood or plastic is used as the material for the can, the vortex TL flow will not flow and no heat will be generated due to this. is used. However, since these metals are electrical conductors, cutting the magnetic flux generates eddy currents, and heating due to the Joule heat of these eddy currents is unavoidable. The amount of heat generated by this eddy current reaches several hundred watts even in a small device, and if cooling is insufficient, the temperature of surrounding parts can rise to several hundred degrees in a few minutes. This overheating causes a decrease in the magnetic force of the magnet, resulting in an inability to transmit power (step-out).
磁気継手の冷却方法として、例えは、水や低温流体を使
用流体とするポンプ等にあっては、キャン内部はこの使
用流体が充満しているため、自己液による自然冷却が可
能であり、またこの方法が玉流である。しかしながら真
空ポンプのようにキャン内部が真空或いは極め℃希薄な
気体である場合は自然冷却の方法は、熱輻射のみであり
充分な冷却は全く期待できない。As a cooling method for magnetic couplings, for example, in the case of pumps that use water or low-temperature fluid, the inside of the can is filled with this fluid, so natural cooling is possible with the self-liquid; This method is Gyokuryu. However, when the inside of the can is vacuum or gas is extremely diluted in temperature, such as in a vacuum pump, the only natural cooling method is thermal radiation, and sufficient cooling cannot be expected at all.
本発明は上述の点に鑑みてなされたもので、上記キ〜ン
を強制的に冷却するキャン冷却手段を設けることにより
、上記欠点を除去した磁気継手の冷却構造を提供するこ
とを巨的とする。The present invention has been made in view of the above-mentioned points, and it is an enormous object of the present invention to provide a cooling structure for a magnetic joint that eliminates the above-mentioned drawbacks by providing a can cooling means for forcibly cooling the above-mentioned key. do.
上記課題を解決するため本発明は、回転機械の回転体に
磁気力により駆動側回転体から非接触で回転力を伝達す
る磁気継手の冷却構造を下記の如く構成した。In order to solve the above problems, the present invention has a cooling structure for a magnetic coupling that transmits rotational force from a drive-side rotating body to a rotating body of a rotating machine in a non-contact manner by magnetic force, as described below.
磁気継手は回転機械の回転体軸に直接又は間接的に連結
諮れたロータ軸と、該ロータ軸外周との間に所定の間隙
を置いて同心円状に配置され且つ回転自在に支承された
円筒状のホイールとを具備し、該ロータ軸外周には被動
側磁石又は被動側導電体を設けると共に円筒状のホイー
ル内周には該被動側磁石又は被動側導電体と対応させて
駆動側導電体又は駆動側磁石を設け、ロータ軸とホイー
ルの間で且つ前記ロータ軸の先端を覆うように回転機械
内を外部雰囲気から遮断するキャンを設け、該キャンを
強制的に冷却するキャン冷却手段を設けたことを特徴と
する。A magnetic coupling is a rotor shaft that is directly or indirectly connected to the rotating body shaft of a rotating machine, and a cylinder that is rotatably supported and arranged concentrically with a predetermined gap between the outer periphery of the rotor shaft. A driven-side magnet or a driven-side conductor is provided on the outer periphery of the rotor shaft, and a driving-side conductor is provided on the inner periphery of the cylindrical wheel in correspondence with the driven-side magnet or driven-side conductor. Alternatively, a drive side magnet is provided, a can is provided between the rotor shaft and the wheel and covers the tip of the rotor shaft to isolate the inside of the rotating machine from the external atmosphere, and a can cooling means is provided to forcibly cool the can. It is characterized by:
また、キャン冷却手段はキャンに接触する独立した冷却
ハウジングであることを特徴とする。Further, the can cooling means is characterized in that it is an independent cooling housing that contacts the can.
また、冷却ハウジングはキャンに固定されていることを
特徴とする。Further, the cooling housing is fixed to the can.
また、冷却ハウジングは弾性部材によりキャンに予圧接
触されていることを特徴とする。Further, the cooling housing is characterized in that it is brought into preload contact with the can by an elastic member.
また、冷却ハウジングの支承手段としてキャン又は冷却
ハウジングに座を設けたことを特徴とする。Further, the present invention is characterized in that a seat is provided on the can or the cooling housing as a support means for the cooling housing.
また、キャンと冷却ハウジングの接触面間にグリース状
物質を塗布し、該キャンと冷却ハウジング間の接触熱伝
導率を向上許せたことを特徴とする。Another feature is that a grease-like substance is applied between the contact surfaces of the can and the cooling housing to improve the contact thermal conductivity between the can and the cooling housing.
また、キャン冷却手段はキャンに冷却ハウジングを一体
に設けたことを特徴とする。Further, the can cooling means is characterized in that a cooling housing is integrally provided with the can.
また、キャンと一体に設けた冷却ハウジングは該キャン
の回転機側とは反対の側面に設けたことを特徴とする。Further, the cooling housing provided integrally with the can is provided on the side of the can opposite to the rotating machine side.
また、冷却手段は前記キャンを二重壁構造とし、その壁
間に冷媒を入れることができるようにしたことを特徴と
する。Further, the cooling means is characterized in that the can has a double wall structure, and a refrigerant can be introduced between the walls.
また、二重壁構造を持つキャンの一部に冷媒入口及び出
口を設けたことを特徴とする。Furthermore, a feature is that a refrigerant inlet and outlet are provided in a part of the can having a double wall structure.
また、円筒状のホイールの一端は支持手段に固定された
ボスに軸受を介して支承し、該ボスに取付は軸受を外輪
回転とし、内輪を支承するボスの軸部に貫通穴を設けた
ことを特徴とする。In addition, one end of the cylindrical wheel is supported via a bearing on a boss fixed to a support means, and the bearing is mounted on the boss so that the outer ring rotates, and a through hole is provided in the shaft of the boss that supports the inner ring. It is characterized by
また、ボスの軸部の貫通穴には前記冷却ハウジング又は
２重構造のキャンの間に連通ずる冷媒配管を通したこと
を特徴とする。Further, a refrigerant pipe communicating with the cooling housing or the double structure can is passed through the through hole of the shaft portion of the boss.
また、冷却ハウジングはボスと一体に形成され、該冷却
ハウジングと前記キャンが面接触していることを特徴と
する。Further, the cooling housing is formed integrally with the boss, and the cooling housing and the can are in surface contact with each other.
また、キャンとボスと一体に形成された冷却ハウジング
の接触面間にグリース状物質を塗布し、該キャンと冷却
ハウジング間の接触熱伝導率を向上させたことを特徴と
する。Another feature is that a grease-like substance is applied between the contact surfaces of the cooling housing formed integrally with the can and the boss to improve the contact thermal conductivity between the can and the cooling housing.
また、前記円筒状のホイールの内周面又は軸と垂直方向
の端面に流路溝を設け、ホイール該流路溝を通る冷却用
気体によりキャンを冷却するキャン冷却手段を付加した
ことを特徴とする。The cylindrical wheel is further characterized in that a channel groove is provided on the inner circumferential surface or an end surface in a direction perpendicular to the shaft, and a can cooling means is added for cooling the can with cooling gas passing through the channel groove of the wheel. do.
磁気継手の冷却構造を上記の如く構成することにより、
ロータ軸と円筒状のホイールの間で且つ前記ロータ軸の
先端を覆うように回転機械内を外部雰囲気から遮断する
キャンを設け、このキャンを強制的に冷却するキャン冷
却手段を設けたので、駆動側ホイールの回転に連動して
ロータ軸も回転する。これによりキャンはロータ軸外周
の被動側磁石又は被動側導電体とホイール内周の駆動導
電体又は駆動側磁石との間に発生する磁束を横切ること
になり、渦電流か発生し、この渦電流のジュール熱によ
りキャンは過熱されるが、キャンを強制的に冷却するキ
ャン冷却手段を設けているので、キャンに発生する熱が
効果的に除去されるから、磁気継手を安全に連続して運
転させることが可能となる。By configuring the cooling structure of the magnetic joint as described above,
A can is provided between the rotor shaft and the cylindrical wheel and covers the tip of the rotor shaft to isolate the inside of the rotating machine from the outside atmosphere, and a can cooling means is provided to forcibly cool the can. The rotor shaft also rotates in conjunction with the rotation of the side wheels. As a result, the can crosses the magnetic flux generated between the driven magnet or driven conductor on the outer circumference of the rotor shaft and the drive conductor or drive magnet on the inner circumference of the wheel, generating an eddy current. The can is overheated due to the Joule heat of It becomes possible to do so.
る。Ru.
第１図は本発明の第１実施例である磁気継手の冷却構造
をスクリュ式真空ポンプに用いた例を示す断面図である
。スクリュ式真空ポンプは主として、主ケーシング１、
吸込側ケーシング２及び吐出側端面板３を具備し、雄ロ
ータ５及び雌ロータ６が主ケーシング１内にロータ軸受
７により回転自在に支承されている。また、吸込側ケー
シング２内には雄ロータ５及び雌ロータ６のそれぞれの
軸端に固着され且つ互いに噛み合うタミングキャ５ａ、
６ａが配置されている。なお、雄ロータ５及び雌ロータ
６のそれぞれのロータ軸が主ケーシング１及び吐出側端
面板３を貫通する部分には密封部材８が設けられ、主ケ
ーシング１内が外部から遮断される構造となっている。FIG. 1 is a sectional view showing an example in which a magnetic coupling cooling structure according to a first embodiment of the present invention is used in a screw type vacuum pump. A screw type vacuum pump mainly consists of a main casing 1,
It includes a suction side casing 2 and a discharge side end plate 3, and a male rotor 5 and a female rotor 6 are rotatably supported in the main casing 1 by a rotor bearing 7. Further, inside the suction side casing 2, there are timing caps 5a fixed to the respective shaft ends of the male rotor 5 and the female rotor 6 and meshing with each other.
6a is placed. A sealing member 8 is provided at the portion where the rotor shaft of the male rotor 5 and female rotor 6 penetrates the main casing 1 and the discharge side end plate 3, so that the inside of the main casing 1 is isolated from the outside. ing.
上記構造のスクリュ式真空ポンプは、雄ロータ５のロー
タ軸に動力が伝達され、雄ロータ５が回転するとタイミ
ングギヤ５ａ、６ａを介して動力が雌ロータ６のロータ
軸に伝達され、雌ロータ６も回転する。In the screw type vacuum pump having the above structure, power is transmitted to the rotor shaft of the male rotor 5, and when the male rotor 5 rotates, power is transmitted to the rotor shaft of the female rotor 6 via the timing gears 5a and 6a. It also rotates.
雄ロータ５のロータ軸５ｂを延長し、吐出側端面板３及
び磁気継手支持板４を貫通跡せ、該ロータ軸５ｂの端部
に磁気継手の被動側ハブ１ｏを固定し、該被動側ハブ１
０の外周には複数個の被動側磁石１０ａが固着されてい
る。The rotor shaft 5b of the male rotor 5 is extended to pass through the discharge side end plate 3 and the magnetic joint support plate 4, and the driven side hub 1o of the magnetic joint is fixed to the end of the rotor shaft 5b. 1
A plurality of driven side magnets 10a are fixed to the outer periphery of the magnet 0.
前記磁気継手支持板４にはロータ軸５ｂの軸端に固定さ
れた被動側ハブ１０を覆ってキャン１１を固定し、該キ
ャン１１によりスクリュ式真空ポンプ内を外部雰囲気か
ら完全に遮断している。被動側磁石１０ａとキャン１１
内周との間には所定の間隙が設けられており、互いに摺
接しないようになっている。A can 11 is fixed to the magnetic joint support plate 4 so as to cover the driven hub 10 fixed to the shaft end of the rotor shaft 5b, and the can 11 completely isolates the inside of the screw type vacuum pump from the outside atmosphere. . Driven side magnet 10a and can 11
A predetermined gap is provided between them and the inner periphery, so that they do not come into sliding contact with each other.
キャン１１の外周には円筒状の磁気継手の駆動側ホイー
ル９が配置され、該駆動側ホイール９の内周面には前記
複数個の被動側磁石１０ａと対応する駆動側磁石９ａが
固着されている。この駆動側磁石９ａとキャン１１の外
周面の間には所定の間隙が設けられており、互いに摺接
しないようになっている。また、駆動側ホイール９は軸
受１４を介してボス１３に支承されている。ボス１３は
ロッド１６を介して磁気継手支持板４に固定されている
。キャン１１のボス１３側の平面部に独立した冷却ハウ
ジング１２を配置している。この冷却ハウジング１２は
ボス１３との間に介在させコイルバネ１５の弾性力によ
りキャン１１の平面部に当接させられている。また、キ
ャン１１のボス１３側の下端には第２図に示すように冷
却ハウジング１２を支承する半円筒状の座１１ａが形成
されている。なお、第２図は第１図のキャン１１のＡ−
Ａ矢視断面図である。A driving side wheel 9 of a cylindrical magnetic coupling is arranged on the outer periphery of the can 11, and a driving side magnet 9a corresponding to the plurality of driven side magnets 10a is fixed to the inner peripheral surface of the driving side wheel 9. There is. A predetermined gap is provided between the drive side magnet 9a and the outer peripheral surface of the can 11, so that they do not come into sliding contact with each other. Further, the drive side wheel 9 is supported by a boss 13 via a bearing 14. The boss 13 is fixed to the magnetic joint support plate 4 via a rod 16. An independent cooling housing 12 is arranged on the flat surface of the can 11 on the boss 13 side. The cooling housing 12 is interposed between the cooling housing 12 and the boss 13, and is brought into contact with the flat surface of the can 11 by the elastic force of a coil spring 15. Further, a semi-cylindrical seat 11a for supporting the cooling housing 12 is formed at the lower end of the can 11 on the boss 13 side, as shown in FIG. In addition, Fig. 2 shows the A- of can 11 in Fig. 1.
It is a sectional view taken along arrow A.
また、ボス１３のキャン１１に対向する中央部には貫通
穴１３ａが設けられており、該貫通穴１３ａ内には前記
冷却ハウジング１２に冷却水等の冷媒を送る大冷媒管１
２ａ及び冷却ハウジング１２から冷媒１２ｃを排出する
出冷媒管１２ｂが配置されている。Further, a through hole 13a is provided in the central portion of the boss 13 facing the can 11, and a large refrigerant pipe 1 is provided in the through hole 13a for feeding a refrigerant such as cooling water to the cooling housing 12.
A refrigerant outlet pipe 12b for discharging the refrigerant 12c from the cooling housing 12 and the cooling housing 12 is disposed.
駆動側ホイール９に一体に形成されたブリー９ｂを回動
することにより、駆動側ホイール９の内周に固着された
駆動側磁石９ａが回転し、該駆動側磁石９ａと被動側磁
石１０ａの間の磁力の作用により、被動側ハブ１０を介
して回転力がロータ軸５ｂに伝達され、雄ロータ５が回
転すると同時にタミングギ−ｖ５ａ、６ａを介して雌ロ
ータ６も回転する。即ち、スクリュ式真空ポンプが駆動
されることになる。By rotating the bully 9b formed integrally with the driving wheel 9, the driving magnet 9a fixed to the inner periphery of the driving wheel 9 rotates, and the space between the driving magnet 9a and the driven magnet 10a is rotated. Due to the action of the magnetic force, the rotational force is transmitted to the rotor shaft 5b via the driven hub 10, and at the same time as the male rotor 5 rotates, the female rotor 6 also rotates via the timing gears v5a, 6a. That is, the screw type vacuum pump is driven.
この場合、駆動側ホイール９０回転により、駆動側磁石
９ａ及び被動側磁石１０ａが回転するが、これにより駆
動側磁石９ａと被動側磁石１゜ａの間に発生する磁束を
キャン１１が横切ることになるから、キャン１１の材料
がステンレス等の導電体であれは、キャン１１内に渦電
流が発生し、この渦電流によるジュール熱によりキャン
１１か熱される。キャン１１が熱セられ温度が高くなる
と磁気継手として不具合いが発生することは前述の通り
である。ここでは大冷媒管１２ａ及び出冷媒管１２ｂを
通して水等の冷媒１２ｃを冷却ハウジング１２内に流す
ことにより、この冷却ハウジング１２を介してキャン１
１を冷却している。なお、ここでキャン１１と冷却ハウ
ジング１２を一体とせずに分離独立させたのは以下の理
由による。即ち、キャン１１内に発生する渦電流はキャ
ンエ１の肉厚が薄い程小きくなるが、キャン１１と冷却
ハウジング１２を一体とすると、寸法、肉厚、重量が大
きくなり、大きな渦電流が発生しキャン１１の上昇温度
も高くなる。そこでキャン１１と冷却ハウジング１２を
分離独立きせると、キャン１１の肉厚を薄くし、渦電流
の発生量をノ」１さく抑えことができる。また、キャン
１１と冷却ハウジング１２が分離独立した構造であれば
、何等かの理由により冷却ハウジング１２が破損した場
合もキャン１１が破壊しないかぎり、冷媒１２ｃは真空
ポンプ内に侵入することがない。In this case, as the driving side wheel 90 rotates, the driving side magnet 9a and the driven side magnet 10a rotate, but as a result, the can 11 crosses the magnetic flux generated between the driving side magnet 9a and the driven side magnet 1°a. Therefore, if the material of the can 11 is a conductor such as stainless steel, an eddy current is generated within the can 11, and the can 11 is heated by Joule heat generated by this eddy current. As mentioned above, if the can 11 is heated and the temperature rises, problems will occur as a magnetic joint. Here, by flowing a refrigerant 12c such as water into the cooling housing 12 through the large refrigerant pipe 12a and the outlet refrigerant pipe 12b, the can 12c is passed through the cooling housing 12.
1 is being cooled. The reason why the can 11 and the cooling housing 12 are not integrated but separated and independent is as follows. In other words, the thinner the wall thickness of the can 11 is, the smaller the eddy current generated in the can 11 is, but if the can 11 and the cooling housing 12 are integrated, the dimensions, wall thickness, and weight will increase, and a large eddy current will be generated. The temperature rise of the can 11 also increases. Therefore, by making the can 11 and the cooling housing 12 separate and independent, the wall thickness of the can 11 can be made thinner, and the amount of eddy current generated can be suppressed by a factor of 1. Further, if the can 11 and the cooling housing 12 are constructed as separate and independent structures, even if the cooling housing 12 is damaged for some reason, the refrigerant 12c will not enter the vacuum pump unless the can 11 is destroyed.
また、本実施例ではボス１３と冷却ハウジング１２の間
にコイルバネ１５を介在させ、該コイルバネ１５の弾性
力により、冷却ハウジング１２をキャン１１の平面部に
当接きせている。これにより、キャン１１と冷却ハウジ
ング１２が強制的に密着することになり熱伝達がより確
実なものとなる。Further, in this embodiment, a coil spring 15 is interposed between the boss 13 and the cooling housing 12, and the elastic force of the coil spring 15 brings the cooling housing 12 into contact with the flat surface of the can 11. Thereby, the can 11 and the cooling housing 12 are forcibly brought into close contact with each other, thereby making the heat transfer more reliable.
なお、コイルバネ１５の代わりに板バネ、プラスチック
等の弾性部材を用いてもよい。更に、キャン１１と冷却
ハウジング１２の間にシリコンオイル等のグリース状の
物質を塗布することにより、両者間の熱伝達は一層良好
なものとなる。Note that instead of the coil spring 15, an elastic member such as a plate spring or plastic may be used. Furthermore, by applying a grease-like substance such as silicone oil between the can 11 and the cooling housing 12, heat transfer between the two can be further improved.
また、上記実施例では冷却ハウジング１２内に水等の冷
媒１２ｃを流す例を示したが、この冷却ハウジング１２
に熱電素子等の冷媒の出入りが不要な冷却素子を収納す
るようにしてもよい。Further, in the above embodiment, an example was shown in which the refrigerant 12c such as water is caused to flow inside the cooling housing 12, but this cooling housing 12
A cooling element such as a thermoelectric element that does not require the passage of refrigerant in and out may be housed in the housing.
また、上記実施例ではキャン１１のボス１３側の端面下
端に冷却ハウジング１２を支承するだめの半円筒状の座
１１ａを設けているが、冷却ハウジング１２の支承手段
としては、冷却ハウジング１２の上下左右の振れをある
程度抑制できるものであれはなんでもよく、例えば、第
３図に示すように、冷却ハウジング１２に支承用の半円
筒状の座１２ｄを設けてもよい。Further, in the above embodiment, a semi-cylindrical seat 11a for supporting the cooling housing 12 is provided at the lower end of the end surface of the can 11 on the boss 13 side. Any device may be used as long as it can suppress the horizontal vibration to some extent. For example, as shown in FIG. 3, the cooling housing 12 may be provided with a semi-cylindrical seat 12d for support.
また、冷却ハウジング１２の固定方法としては、図示は
省略するが、ボルトナツト或いは接着剤等により、直接
キャン１１に固定してもよいことは当然である。Furthermore, as a method of fixing the cooling housing 12, although not shown in the drawings, it is of course possible to fix the cooling housing 12 directly to the can 11 using bolts, nuts, adhesive, or the like.
また、冷却ハウジング１２の構造及びその取付は位置も
第１図の例４こ限定されるものではなく、例えは、第１
１図、第１２図、第１３図及び第１５図に示すような構
造及び取付は方法がある。Further, the structure of the cooling housing 12 and its mounting position are not limited to the example 4 in FIG.
There are several methods of structure and installation as shown in FIGS. 1, 12, 13, and 15.
第１１図の例は冷却ハウジング１２をキャン１１の外周
全面を覆うように円筒状に形成し、この円筒状の冷却ハ
ウジング１２内周部にキャン１１を挿入して取付ける。In the example shown in FIG. 11, the cooling housing 12 is formed into a cylindrical shape so as to cover the entire outer periphery of the can 11, and the can 11 is inserted and attached to the inner periphery of the cylindrical cooling housing 12.
この場合人冷媒管１２ａ及び出冷媒管１２ｂの取付は位
置は１２ａ’ 、１２ａ゛及び１２ｂ’１２ｂ”′のよ
うにする。In this case, the refrigerant pipe 12a and the outlet refrigerant pipe 12b are installed at positions 12a', 12a'' and 12b'12b'''.
本実施例の場合には、駆動側磁石９ａと被動側磁石１０
ａの間に厚い冷却ハウジング１２が介在するので磁力が
弱まり、駆動側ホイール９の回転力を被動側ハブ１０に
伝達する伝達率は若干低下するが、キャン１１の過熱を
抑えるには効果的である。In the case of this embodiment, the driving side magnet 9a and the driven side magnet 10
Since the thick cooling housing 12 is interposed between a, the magnetic force is weakened, and the transmission rate for transmitting the rotational force of the driving wheel 9 to the driven hub 10 is slightly lowered, but it is effective in suppressing overheating of the can 11. be.
第１２図の例は冷却ハウジング１２をキャン１１の外周
の一部であるフランジ側近傍を覆うようにリング状に形
成したもので、第１．１図に比較し、回転力の伝達率は
低下しないが、キャン１１の冷却効果は第１１図の場合
に比較し若干劣る。In the example shown in Fig. 12, the cooling housing 12 is formed in a ring shape so as to cover a part of the outer periphery of the can 11 near the flange side, and the transmission rate of rotational force is lower than that in Fig. 1.1. However, the cooling effect of the can 11 is slightly inferior to that shown in FIG.
第１３図の例は冷却ハウジング１２をキャン１１の外周
面及びポス１３側端面の全域を覆うように円筒状に形成
したもので、このようにすることによりキャン１１の冷
却効果はより向上するが、回転力の伝達率は第１１図の
場合と略同程度となる。In the example shown in FIG. 13, the cooling housing 12 is formed into a cylindrical shape so as to cover the entire outer peripheral surface of the can 11 and the end surface on the side of the post 13. By doing so, the cooling effect of the can 11 is further improved. , the transmission rate of rotational force is approximately the same as in the case of FIG.
第１５図の例は冷却ハウジング１２をリング状ニ形成し
、第１２図の場合とは反対にキャン１１のポス１３側端
部近傍を覆うようにしたものである。この場合も第１２
図の場合と同様、第１１図に比較し、回転力の伝達率は
低下しないが、キャン１１の冷却効果は第１１図の場合
に比較し、若干劣る。In the example shown in FIG. 15, the cooling housing 12 is formed into a ring shape and covers the vicinity of the end of the can 11 on the post 13 side, contrary to the case shown in FIG. In this case also the 12th
As in the case shown in the figure, the transmission rate of rotational force does not decrease compared to that shown in FIG. 11, but the cooling effect of the can 11 is slightly inferior compared to that shown in FIG.
なお、第１１図、第１２図、第１３図及び第１５区に示
す磁気継手の冷却構造においても、キャン１１と冷却ハ
ウジング１２の接触面間にはシリコンオイル等のグリー
ス状の物質を塗布することにより、両者間の熱伝達率を
一層向上きせることができる。Note that also in the cooling structure of the magnetic joint shown in FIGS. 11, 12, 13, and 15, a grease-like substance such as silicone oil is applied between the contact surfaces of the can 11 and the cooling housing 12. By doing so, the heat transfer coefficient between the two can be further improved.
第４図は本発明の第２の実施例である磁気継手の冷却構
造をスクリュ式真空ポンプに用いた例を示す断面図であ
る。同図において、第１図と同一符号を付した部分は同
一部分を示す。なお、他の図面においても同様とする。FIG. 4 is a cross-sectional view showing an example in which a cooling structure for a magnetic joint, which is a second embodiment of the present invention, is used in a screw type vacuum pump. In this figure, parts given the same reference numerals as in FIG. 1 indicate the same parts. Note that the same applies to other drawings.
第４図が第１図と相違する点は、第４図においては、駆
動側ホイール９のキャン１１と対向する端面、即ち軸方
向に対する垂直方向の端面に、第５図及び第６図に示す
ように流路溝１７が設けられている点であり、その他の
点は同一である。なお、第５図は駆動側ホイール９の第
４図のＡ−Ａ矢視図であり、第６図は第５図のＢ矢視図
である。The difference between FIG. 4 and FIG. 1 is that in FIG. The only difference is that the flow path groove 17 is provided, and the other points are the same. In addition, FIG. 5 is a view of the driving side wheel 9 taken along arrow A-A in FIG. 4, and FIG. 6 is a view taken along arrow B of FIG.
上記のように駆動側ホイール９のキャン１１と対向する
端面に凹部となる流路溝１７を設けることにより、駆動
側ホイール９が回転することにより、凸部と流路溝１７
をそれぞれファンの翼と翼の間に流路として作用し、フ
ァン効果によりキャン１１の冷却を行なうことができる
。このような構造とすることにより、冷却ハウジング１
２による冷却に加え、駆動側ホイール９の回転によるフ
ァン効果によりキャン１１の冷却効果が更に向上するる
。また、駆動側ホイール９が回転している限り冷媒（主
として大気）はボス１３等の貫通穴１３ａより吸入され
、例えば、冷却ハウジング１２に供給される冷媒が減少
しても冷却不良は起こり得す、安定した冷却が可能であ
る。As described above, by providing the channel groove 17 serving as a concave portion on the end surface of the drive side wheel 9 facing the can 11, when the drive side wheel 9 rotates, the convex portion and the channel groove 17
act as a flow path between the blades of the fan, and the can 11 can be cooled by the fan effect. With this structure, the cooling housing 1
In addition to the cooling effect of the can 11, the fan effect caused by the rotation of the driving wheel 9 further improves the cooling effect of the can 11. Furthermore, as long as the drive wheel 9 is rotating, the refrigerant (mainly atmospheric air) is sucked in through the through hole 13a of the boss 13, etc., and for example, even if the refrigerant supplied to the cooling housing 12 decreases, poor cooling may occur. , stable cooling is possible.
なお、本実施例では貫通穴１３ａを駆動側ホイール９に
同心の円筒形状としたが、ボス１３を貫通する穴であれ
ばどのような穴でもよいことは当然である。In this embodiment, the through hole 13a has a cylindrical shape concentric with the drive wheel 9, but it goes without saying that any hole that penetrates the boss 13 may be used.
第７図は本発明の第３の実施例である磁気継手の冷却構
造をスクリュ式真空ポンプに用いた例を示す断面図であ
る。第７図が第１図と相違する点は、第７図においては
冷却ハウジング１２がキャン１１のスクリュ式真空ポン
プ側とは反対側の面に該キャン１１と一体に設けられて
いる点であり、その他の点は第１図と路間−である。FIG. 7 is a sectional view showing an example in which a cooling structure for a magnetic joint according to a third embodiment of the present invention is used in a screw type vacuum pump. The difference between FIG. 7 and FIG. 1 is that in FIG. 7, the cooling housing 12 is provided integrally with the can 11 on the opposite side of the can 11 from the screw-type vacuum pump side. , the other points are between Fig. 1 and the road.
キャン１１と一体に設けられた冷却ハウジング１２内に
大冷媒管１２ａ及び出冷媒管１２ｂを通して水等の冷媒
を供給することにより、キャン１１を冷却することがで
きる。この場合、キャン１１と冷却ハウジング１２は一
体に形成されているためキヘ・ン１１と冷却ハウジング
１２間の熱伝導率が第１図のキャン１１と冷却ハウジン
グ１２が分離独立する場合より良くなり、部品点数も減
少する。但し、何等かの原因でキャン１１が破損した場
合、冷媒１２ｃが真空ポンプ内に侵入する恐れがある。The can 11 can be cooled by supplying a refrigerant such as water into the cooling housing 12 that is provided integrally with the can 11 through the large refrigerant pipe 12a and the outlet refrigerant pipe 12b. In this case, since the can 11 and the cooling housing 12 are integrally formed, the thermal conductivity between the can 11 and the cooling housing 12 is better than when the can 11 and the cooling housing 12 are separated and independent as shown in FIG. The number of parts is also reduced. However, if the can 11 is damaged for some reason, there is a risk that the refrigerant 12c may enter the vacuum pump.
なお、冷却ハウジング１２をキャン１１と一体に形成す
る例としては上記例に限定されるものでなく、例えば第
１４区に示すように、キャン１１のフランジ近傍の外周
に一体に設けてもよい。Note that the example in which the cooling housing 12 is integrally formed with the can 11 is not limited to the above example, and may be integrally provided on the outer periphery of the can 11 near the flange, for example, as shown in Section 14.
第８図は本発明の第４の実施例である磁気継手の冷却構
造をスクリュ式真空ポンプに用いた例を示す断面図であ
る。第８図が第１区と相違する点は、第８図においては
冷却ハウジング１２がボス１３と一体に設けられ、且つ
キャン１１のポンプ側とは反対側の面に当接している点
であり、その他の点は第１図と路間−である。FIG. 8 is a cross-sectional view showing an example in which a magnetic coupling cooling structure according to a fourth embodiment of the present invention is used in a screw type vacuum pump. The difference between FIG. 8 and Section 1 is that in FIG. 8, the cooling housing 12 is provided integrally with the boss 13, and is in contact with the surface of the can 11 on the side opposite to the pump side. , the other points are between Fig. 1 and the road.
図示するように、冷却ハウジング１２とボス１３とを一
体とし、キャン１１と冷却ハウジング１２を分離独立さ
れたのは下記の理由による。即ち、第１図の場合と同様
、キャン１１と冷却ハウジング１２を分離独立させるこ
とにより、キャン１１の肉厚を薄くし、渦を流の発生量
を小きく抑えることができる。また、キャン１１と冷却
ハウジング１２が分離独立した構造であれば、何等かの
理由により冷却ハウジング１２が破損した場合もキャン
１１が破損しない限り冷媒１２ｃは真空ポンプ内に侵入
することがない。また、キャン１１には冷却ハウジング
１２を支持する手段や位置決めをする手段を必要としな
いから、キャン１１をより薄くできる。The reason why the cooling housing 12 and the boss 13 are integrated and the can 11 and the cooling housing 12 are separated and independent as shown in the figure is as follows. That is, as in the case of FIG. 1, by making the can 11 and the cooling housing 12 separate and independent, the thickness of the can 11 can be made thinner, and the amount of vortices generated can be kept small. Furthermore, if the can 11 and the cooling housing 12 are constructed as separate and independent structures, even if the cooling housing 12 is damaged for some reason, the refrigerant 12c will not enter the vacuum pump unless the can 11 is damaged. Further, since the can 11 does not require means for supporting or positioning the cooling housing 12, the can 11 can be made thinner.
また、キャン１１と冷却ハウジング１２０間にはシリコ
ンオイル等のグリース状の物質を塗布することにより、
両者間の熱伝達はいっそう良好なものとなる。Furthermore, by applying a grease-like substance such as silicone oil between the can 11 and the cooling housing 120,
Heat transfer between the two becomes even better.
なお、本実施例では第８図に示す通り、冷却ハウジング
１２を支持する方法とし、該冷却ハウジング１２とボス
１３を一体に設ける構造を採用している。これは鋳物及
び溶接等の方法により達成できる。また、冷却ハウジン
グ１２とボス１３を分離して製作し、冷却ハウジング１
２をボス１３にボルト又は接着剤等で固定するようにし
ても同様な効果が得られる。In this embodiment, as shown in FIG. 8, a method of supporting the cooling housing 12 is adopted, and a structure in which the cooling housing 12 and the boss 13 are integrally provided is adopted. This can be achieved by methods such as casting and welding. In addition, the cooling housing 12 and the boss 13 are manufactured separately, and the cooling housing 1
2 to the boss 13 with bolts or adhesive, similar effects can be obtained.
第９図は本発明の第５の実施例である磁気継手の冷却構
造をスクリュ式真空ポンプに用いた例を示す断面図であ
る。第９図が第１図と相違する点は、第９図においては
キャン１１は外壁１１ｂ１内壁１１ｃを持つ二重壁構造
とし、且つキャンフランジ１１ａに冷媒入口ｌｉｄと冷
媒出口ｌｉｅを備える構造とした。水等の冷媒１１ｆは
前記冷媒入口ｌｉｄより入り、二重壁内でキャン１１に
発生した熱を奪った後、冷媒出口ｌｉｅより外に排出さ
れる。また、キャン１１内には冷媒の出入りが不要な冷
却要素を封入してもよい。但しこの場合は冷媒人口ｌｉ
ｄ及び冷媒出口ｌｉｅに電線等を通す。FIG. 9 is a sectional view showing an example in which a cooling structure for a magnetic joint according to a fifth embodiment of the present invention is used in a screw type vacuum pump. The difference between FIG. 9 and FIG. 1 is that in FIG. 9, the can 11 has a double wall structure with an outer wall 11b1 and an inner wall 11c, and the can flange 11a has a refrigerant inlet lid and a refrigerant outlet lie. . A refrigerant 11f such as water enters through the refrigerant inlet lid, removes heat generated in the can 11 within the double wall, and is then discharged to the outside through the refrigerant outlet lie. Further, a cooling element that does not require refrigerant to flow in and out may be enclosed within the can 11. However, in this case, the refrigerant population li
d and refrigerant outlet lie.
第１０図は第９図の変形例であり、図示するように冷媒
をキャン１１の二重壁内に送る入冷媒管１１ｇと排出す
る出冷媒管１１ｈをキャンフランジｌｌａに設けずに、
キャン１１のボス１３と対向する面に設けている。これ
はボス１３の軸部に貫通穴１３ａを設けることにより、
この構造を容易に達成できる。FIG. 10 is a modification of FIG. 9, in which an inlet refrigerant pipe 11g for sending refrigerant into the double wall of the can 11 and an outlet refrigerant pipe 11h for discharging the refrigerant are not provided on the can flange lla as shown in the figure.
It is provided on the surface of the can 11 facing the boss 13. This is achieved by providing a through hole 13a in the shaft portion of the boss 13.
This structure is easily achieved.
なお、第９図の場合も第１０図の場合もキャン１１の外
壁１１ｂ及び内壁１１ｃは溶接若しくはプレスにより製
作できる。In addition, both in the case of FIG. 9 and the case of FIG. 10, the outer wall 11b and inner wall 11c of the can 11 can be manufactured by welding or pressing.
上記のようにキャン１１を外壁１１ｂ１内壁１１ｃ及び
キャンフランジｌｌａにより構成させ、外壁１１ｂと内
壁１１ｃとで形成される二重壁内に冷媒１１ｆ’を流す
ことにより、キャン１１の冷却が確実となり、更に冷却
専用の部品を付加する必要がなくなり、部品点数の減少
と小型化を可能にすることができる。As described above, the can 11 is constituted by the outer wall 11b1, the inner wall 11c, and the can flange lla, and by flowing the coolant 11f' into the double wall formed by the outer wall 11b and the inner wall 11c, the can 11 can be reliably cooled. Furthermore, there is no need to add any parts dedicated to cooling, making it possible to reduce the number of parts and downsize.
磁気継手の構造は、上記実施例に限定されるものではな
く、第１６図に示す構造の磁気継手であってもよい。即
ち、駆動側ホイール９の一端を軸受１４ｂを介して磁気
継手支持板４の側部に回転自在に支承させる構造として
もよい。なお、第１６図においては、駆動側ホイール９
の支承認構造が異なるだけで、他は上記磁気継手同一で
ある。また、第１６図においては、キャン１１を冷却す
るキャン冷却手段の図示は省略している。The structure of the magnetic joint is not limited to the above embodiment, but may be a magnetic joint having the structure shown in FIG. 16. In other words, one end of the driving wheel 9 may be rotatably supported on the side of the magnetic joint support plate 4 via the bearing 14b. In addition, in FIG. 16, the driving side wheel 9
The only difference is the support structure, and the rest is the same as the above magnetic joint. Further, in FIG. 16, illustration of a can cooling means for cooling the can 11 is omitted.
なお、上記実施例においては駆動側ホイール９の内周面
に設けた駆動側磁石９ａも被動側ハブ１０の外周に設け
た被動側磁石１０ａも磁石である同期型としたが、両者
とも磁石である必要がなく、一方を磁石とし、他方を導
電体又は己ステリシス材体とする所謂誘導型とすること
も可能である。また、磁石も永久磁石に限定されるもの
ではなく、電磁石でもよいことは当然である。In the above embodiment, both the driving side magnet 9a provided on the inner peripheral surface of the driving side wheel 9 and the driven side magnet 10a provided on the outer periphery of the driven side hub 10 are synchronous type magnets, but both are magnets. It is also possible to use a so-called induction type in which one is a magnet and the other is a conductor or a self-steresis material. Moreover, the magnet is not limited to a permanent magnet, and it goes without saying that an electromagnet may also be used.
また、上記実施例では、磁気継手をスクリュー式真空ポ
ンプに用いた例を示したが、本発明の磁気継手の冷却構
造はこれに限定されるものではなく、回転式の真空ポン
プは勿論、真空ポンプに限定されることなく、キャンに
より外部雰囲気と完全に遮断する回転機械に回転動力伝
達手段として用いる磁気継手の冷却に有効である。In addition, in the above embodiment, an example was shown in which the magnetic joint was used in a screw type vacuum pump, but the cooling structure of the magnetic joint of the present invention is not limited to this, and it can be used not only in a rotary type vacuum pump but also in a vacuum pump. It is effective for cooling not only pumps but also magnetic couplings used as rotational power transmission means in rotating machines that are completely isolated from the outside atmosphere by cans.
なお、上記実施例において磁気継手のロータ軸５ｂをス
クリュー式真空ポンプの雄ロータ５の軸に直結する構造
としているが、直結するものに限定されるものではなく
、例えば増減速ギアを介して間接的に連結する構造であ
ってもよいことは出熱である。In the above embodiment, the rotor shaft 5b of the magnetic coupling is directly connected to the shaft of the male rotor 5 of the screw vacuum pump, but the structure is not limited to direct connection. It is possible to have a structure in which the parts are connected to each other because of heat output.
以上説明したように本発明によれば下記のような優れた
効果か得られる。As explained above, according to the present invention, the following excellent effects can be obtained.
＜１）ロータ軸とホイールの間で且つ前記ロータ軸の先
端を覆うように回転機械内を外部雰囲気から遮断するキ
ャンを設け、キャンを強制的に冷却するキャン冷却手段
を設けたので、駆動側ホイールの回転により、キャン内
に発生する渦電流による熱をキャン冷却手段が効果的に
除去するから、磁気継手を安全に連続運転させることか
可能となる。<1) A can that isolates the inside of the rotating machine from the outside atmosphere is provided between the rotor shaft and the wheel and covers the tip of the rotor shaft, and a can cooling means is provided that forcibly cools the can, so that the drive side Since the can cooling means effectively removes heat due to eddy currents generated within the can by rotation of the wheel, it is possible to safely and continuously operate the magnetic coupling.
〈２）キャン冷却手段がキャンに接触する独立した冷却
ハウジングであることにより、何等かの理由により冷却
ハウジングが破損しても冷媒が回転機械に侵入すること
がない。(2) Since the can cooling means is an independent cooling housing that contacts the can, even if the cooling housing is damaged for some reason, the refrigerant will not enter the rotating machine.
（３）冷却ハウジングは弾性部材によりキャンに予圧接
触させることにより、冷却ハウジングを別部品としても
、キャンと冷却ハウジングの熱伝達効率を下げることな
くキャン内に発生する熱を良好に除去できる。(3) By bringing the cooling housing into pre-pressure contact with the can using an elastic member, even if the cooling housing is a separate component, the heat generated within the can can be efficiently removed without reducing the heat transfer efficiency between the can and the cooling housing.
（４）キャンと冷却ハウジングの接触面間にグリース状
物質を塗布することにより、冷却ハウジング間の接触熱
伝達率を向上させた、キャン内に発生する熱を更に良好
に除去できる。(4) By applying a grease-like substance between the contact surfaces of the can and the cooling housing, the contact heat transfer coefficient between the cooling housing is improved, and the heat generated in the can can be removed more effectively.
（５）キャン冷却手段はキャンに冷却ハウジングを一体
に設けることにより、キャンと冷却ハウジングの接触面
接触がなく熱伝達率の低下がないから、キャン内に発生
する熱を有効に除去できる。(5) Since the can cooling means has a cooling housing integrated with the can, there is no contact surface between the can and the cooling housing, and there is no reduction in heat transfer coefficient, so that heat generated within the can can be effectively removed.
また、部品点数が少なく組立ても容易になる。Furthermore, the number of parts is small and assembly is easy.
（６） 冷却手段は前記キャンを二重壁構造とし、そ
の壁間に冷媒を入れることができるようにすることによ
り、極めて効率的にしかも確実にキャン内に発生する熱
を除去できる。また、冷却専用の部品を付加する必要が
なくなり、部品点数の減少と小型化が可能となる。(6) The cooling means has a double wall structure for the can, and by allowing a refrigerant to enter between the walls, the heat generated in the can can be removed extremely efficiently and reliably. Further, there is no need to add a component dedicated to cooling, and the number of components and size can be reduced.
（７）円筒状のホイールの一端は支承するボスの細部に
貫通穴を設けたことにより、冷媒配管の設置、大気等の
冷却気体の通過に制約がなく、キャンを充分に冷却する
ことができる。(7) One end of the cylindrical wheel has a through hole in the detail of the boss that supports it, so there are no restrictions on the installation of refrigerant piping or the passage of cooling gas such as the atmosphere, and the can can be sufficiently cooled. .
（８）冷却ハウジングをボスと一体に形成することによ
り、キャンに冷却ハウジングに支持する手段を設けるこ
となく、キャンが肉薄にでき渦電流を抑制することがで
きると共に部品点数が少なく、且つ効果的にキャン内に
発生する熱を除去できる。また、キャンと冷却ハウジン
グの接触面間にグリース状物質を塗布し、該キャンと冷
却ハウジング間の接触熱伝導率を向上させることができ
る。(8) By forming the cooling housing integrally with the boss, the can can be made thinner and eddy currents can be suppressed without providing a means for supporting the cooling housing on the can, and the number of parts is small, and it is effective. The heat generated inside the can can be removed. Additionally, a grease-like substance can be applied between the contact surfaces of the can and the cooling housing to improve the contact thermal conductivity between the can and the cooling housing.
（９）円筒状のホイールの内周面又は軸と垂直方向の端
面に流路溝を設け、ホイール該流路溝を通る冷却用気体
によりキャンを冷却するキャン冷却手段を付加すること
により、キャンの冷却をより確実にすることができる。(9) By providing a flow passage groove on the inner peripheral surface of the cylindrical wheel or on the end face in a direction perpendicular to the axis, and adding a can cooling means for cooling the can with cooling gas passing through the flow passage groove of the wheel, the can can be cooled. cooling can be made more reliable.
第１図は本発明の第１実施例である磁気継手の冷却構造
を示す断面図、第２図は第１図のキャンのＡ−Ａ矢視図
、第３図は第１実施例の変形例を示す図、第４図は本発
明の第２実施例である磁気継手の冷却構造を示す断面図
、第５図は第４図の駆動側ホイールのＡ−Ａ矢視図、第
６図は第５図のＢ矢視図、第７図は本発明の第３実旌例
である磁気継手の冷却構造を示す断面図、第８図は本発
明の第４実施例である磁気継手の冷却構造を示す断面図
、第９図は本発明の第５実施例である磁気継手の冷却構
造を示す断面図、第１０図は第６実施例である磁気継手
の冷却構造を示す図、第１１図、第１２図、第１３図及
び第１５図は第１実施例の変形例を示す図、第１４図は
第３実施例の変形例を示す図、第１６図は本発明の冷却
構造を採用する他の磁気継手の構造を示す図である。
図中、１・・・・主ケーシング、２・・・・吸込側ケー
シング、３・・・・吐出側端面板、４・・・・磁気継手
支持板、５・・ 雄ロータ、６・・・雌ロータ、７・・
軸受、８・・・・密封部材、９・・・・駆動側ホイール
、１０・・・・被動側ハブ、１１・・・・キャン、１２
冷却ハウジング、１３・・・・ボス、１４・・・・軸受
、１５・・・・コイルバネ、１６・・・・ロッド。
特許出願人 株式会社荏原製作所
代理人 弁理士 熊谷隆（外１名）
第
図
第３図
第
７図
第８
図
第４図
第６
図
第６図
第１０図Fig. 1 is a sectional view showing the cooling structure of a magnetic joint according to the first embodiment of the present invention, Fig. 2 is a view taken along the arrow A-A of the can of Fig. 1, and Fig. 3 is a modification of the first embodiment. 4 is a cross-sectional view showing a cooling structure of a magnetic coupling according to a second embodiment of the present invention, FIG. 5 is a view taken along the arrow A-A of the drive side wheel in FIG. 4, and FIG. 6 is a diagram showing an example. 5 is a view taken in the direction of arrow B in FIG. 5, FIG. 7 is a sectional view showing the cooling structure of a magnetic joint according to a third embodiment of the present invention, and FIG. 8 is a diagram showing a magnetic joint according to a fourth embodiment of the present invention. 9 is a cross-sectional view showing a cooling structure of a magnetic joint according to a fifth embodiment of the present invention; FIG. 10 is a cross-sectional view showing a cooling structure of a magnetic joint according to a sixth embodiment of the present invention; FIG. 11, 12, 13, and 15 are diagrams showing a modification of the first embodiment, FIG. 14 is a diagram showing a modification of the third embodiment, and FIG. 16 is a cooling structure of the present invention. It is a figure showing the structure of another magnetic joint which employs. In the figure, 1...main casing, 2...suction side casing, 3...discharge side end plate, 4...magnetic joint support plate, 5...male rotor, 6... Female rotor, 7...
Bearing, 8... Sealing member, 9... Drive side wheel, 10... Driven side hub, 11... Can, 12
Cooling housing, 13... Boss, 14... Bearing, 15... Coil spring, 16... Rod. Patent applicant Ebara Corporation Agent Patent attorney Takashi Kumagai (1 other person) Figure 3 Figure 7 Figure 8 Figure 4 Figure 6 Figure 6 Figure 10
Claims (15)
ら非接触で回転力を伝達する磁気継手において、 前記磁気継手は前記回転機械の回転体軸に直接又は間接
的に連結されたロータ軸と、 該ロータ軸外周との間に所定の間隙を置いて同心円状に
配置され且つ回転自在に支承された円筒状のホィールと
を具備し、 該ロータ軸外周には被動側磁石又は被動側導電体又は被
動側ヒステリシス材体を設けると共に、前記円筒状のホ
ィール内周には該被動側磁石又は被動側導電体又は被動
側ヒステリシス材体と対応させて駆動側導電体又は駆動
側磁石又は駆動側ヒステリシス材体を設け、前記ロータ
軸と前記ホィールの間で且つ前記ロータ軸の先端を覆う
ように前記回転機械内を外部雰囲気から遮断するキャン
を設け、 前記キャンを強制的に冷却するキャン冷却手段を設けた
ことを特徴とする磁気継手の冷却構造。(1) In a magnetic coupling that non-contact transmits rotational force from a drive-side rotating body to a rotating body of a rotating machine by magnetic force, the magnetic coupling is connected to a rotor that is directly or indirectly connected to a rotating body axis of the rotating machine. a shaft, and a cylindrical wheel arranged concentrically with a predetermined gap between the outer periphery of the rotor shaft and rotatably supported; A conductor or a driven side hysteresis material is provided, and a driving side conductor, a driving side magnet, or a driving side is provided on the inner periphery of the cylindrical wheel in correspondence with the driven side magnet, the driven side conductor, or the driven side hysteresis material. A side hysteresis material body is provided, a can is provided between the rotor shaft and the wheel and covers the tip of the rotor shaft to isolate the inside of the rotating machine from the external atmosphere, and can cooling is forcibly cooled the can. A cooling structure for a magnetic joint, characterized in that a means is provided.
却ハウジングであることを特徴とする請求項（１）記載
の磁気継手の冷却構造。(2) The cooling structure for a magnetic joint according to claim 1, wherein the cooling means is an independent cooling housing that contacts the can.
されていることを特徴とする請求項（２）記載の磁気継
手の冷却構造。(3) The magnetic coupling cooling structure according to claim (2), wherein the independent cooling housing is fixed to the can.
に予圧接触されていることを特徴とする請求項（２）記
載の磁気継手の冷却構造。(4) The cooling structure for a magnetic joint according to claim (2), wherein the cooling housing is preloaded into contact with the can by an elastic member.
又は冷却ハウジングに座を設けたことを特徴とする請求
項（２）又は（４）記載の磁気継手の冷却構造。(5) The cooling structure for a magnetic joint according to claim 2 or 4, characterized in that a seat is provided on the can or the cooling housing as a support means for the cooling housing.
リース状物質を塗布し、該キャンと冷却ハウジング間の
接触熱伝達率を向上させたことを特徴とする請求項（１
）乃至（５）のいずれか一つに記載の磁気継手の冷却構
造。(6) A grease-like substance is applied between the contact surfaces of the can and the cooling housing to improve the contact heat transfer coefficient between the can and the cooling housing.
) to (5), the cooling structure of the magnetic joint according to any one of (5).
体に設けたことを特徴とする請求項（１）記載の磁気継
手の冷却構造。(7) The cooling structure for a magnetic joint according to claim (1), wherein the cooling means includes a cooling housing integrally provided with the can.
ャンの前記回転機側とは反対の側面に設けしたことを特
徴とする請求項（７）記載の磁気継手の冷却構造。(8) A cooling structure for a magnetic coupling according to claim (7), wherein the cooling housing provided integrally with the can is provided on a side surface of the can opposite to the rotating machine side.
の壁間に冷媒を入れることができるようにたことを特徴
とする請求項（１）記載の磁気継手の冷却構造。(9) A cooling structure for a magnetic joint according to claim (1), wherein the cooling means has a double wall structure for the can, and a refrigerant can be inserted between the walls.
及び出口を設けたことを特徴とする請求項（９）記載の
磁気継手の冷却構造。(10) The cooling structure for a magnetic joint according to claim 9, wherein a part of the can having a double wall structure is provided with a refrigerant inlet and an outlet.
されたボスに軸受を介して支承し、該ボスに取付け軸受
を外輪回転とし、内輪を支承するボスの軸部に貫通穴を
設けたことを特徴とする請求項（１）乃至（１１）のい
ずれか一つに記載の磁気継手の冷却構造。(11) One end of the cylindrical wheel is supported via a bearing on a boss fixed to a support means, the bearing is attached to the boss to rotate the outer ring, and a through hole is provided in the shaft of the boss that supports the inner ring. The cooling structure for a magnetic joint according to any one of claims (1) to (11).
グまたは二重壁構造のキャンの壁間に連通する冷媒配管
を通したことを特徴とする請求項（１）乃至（１１）の
いずれか一つに記載の磁気継手の冷却構造。(12) Any one of claims (1) to (11), characterized in that a refrigerant pipe communicating between the walls of the cooling housing or the double-walled can is passed through the through hole of the shaft portion of the boss. The cooling structure of the magnetic joint described in one of the above.
はボスに固定され、且つ該冷却ハウジングと前記キャン
が面接触していることを特徴とする請求項（１１）記載
の磁気継手の冷却構造。(13) The cooling structure for a magnetic joint according to claim (11), wherein the cooling housing is formed integrally with the boss or is fixed to the boss, and the cooling housing and the can are in surface contact with each other.
ース状物質を塗布し、該キャンと冷却ハウジング間の接
触熱伝導率を向上させたことを特徴とする請求項（１３
）記載の磁気継手の冷却構造。(14) Claim (13) characterized in that a grease-like substance is applied between the contact surfaces of the can and the cooling housing to improve contact thermal conductivity between the can and the cooling housing.
) Cooling structure of the magnetic coupling described.
向の端面に流路溝を設け、ホィール該流路溝を通る冷却
用気体によりキャンを冷却するキャン冷却手段を付加し
たことを特徴とする請求項（１）乃至（１３）のいずれ
か一つに記載の磁気継手の冷却構造。(15) A channel groove is provided on the inner circumferential surface of the cylindrical wheel or an end surface in a direction perpendicular to the axis, and a can cooling means is added for cooling the can with cooling gas passing through the channel groove. A cooling structure for a magnetic joint according to any one of claims (1) to (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14248090A JPH0438162A (en) | 1990-05-31 | 1990-05-31 | Magnetic coupling cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14248090A JPH0438162A (en) | 1990-05-31 | 1990-05-31 | Magnetic coupling cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438162A true JPH0438162A (en) | 1992-02-07 |
Family
ID=15316301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14248090A Pending JPH0438162A (en) | 1990-05-31 | 1990-05-31 | Magnetic coupling cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438162A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008163865A (en) * | 2006-12-28 | 2008-07-17 | Anest Iwata Corp | Fluid machine coupled to driving source via magnetic coupling |
| JP2008164095A (en) * | 2006-12-28 | 2008-07-17 | Anest Iwata Corp | Magnetic coupling device |
| CN104518641A (en) * | 2013-09-30 | 2015-04-15 | 中达电通股份有限公司 | Permanent magnetic speed regulating coupling |
-
1990
- 1990-05-31 JP JP14248090A patent/JPH0438162A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008163865A (en) * | 2006-12-28 | 2008-07-17 | Anest Iwata Corp | Fluid machine coupled to driving source via magnetic coupling |
| JP2008164095A (en) * | 2006-12-28 | 2008-07-17 | Anest Iwata Corp | Magnetic coupling device |
| CN104518641A (en) * | 2013-09-30 | 2015-04-15 | 中达电通股份有限公司 | Permanent magnetic speed regulating coupling |
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