PUMP

One embodiment of this pump comprises: a rotor that is capable of rotating about a center axis; a stator that surrounds the rotor and is positioned outward of the rotor in the radial direction; a pump part that connects to the rotor on the side in one axial direction; a support member that has a bas...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHIZUKU Yoshiyuki, KATAOKA Shigehiro
Format: Patent
Sprache:eng ; fre ; jpn
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Beschreibung
Zusammenfassung:One embodiment of this pump comprises: a rotor that is capable of rotating about a center axis; a stator that surrounds the rotor and is positioned outward of the rotor in the radial direction; a pump part that connects to the rotor on the side in one axial direction; a support member that has a base portion which covers the stator from the side in the one axial direction, and a rotor housing portion which is made from a non-magnetic body, is positioned inward of the stator in the radial direction, and houses the rotor in the interior thereof; and a fixed shaft that extends in the axial direction and rotatably supports the rotor. The rotor housing portion is provided with a lid portion that covers the rotor from the side in the other axial direction, and a cylinder portion that is positioned between the rotor and the stator in the radial direction and is open on the side in the one axial direction. The lid portion is provided with a holding portion that holds the end portion of the fixed shaft on the side in the other axial direction. In the end portion of the fixed shaft on the side in the other axial direction, a hole portion that is recessed toward the side in the one axial direction is provided. The holding portion is provided with a protruding portion that covers at least a portion of the inner surface of the hole portion. A screw is screwed into the lid portion from the side in the other axial direction. At least a portion of the screw is screwed into the protruding portion. Un mode de réalisation de cette pompe comprend : un rotor qui est capable de se mettre en rotation autour d'un axe central ; un stator qui entoure le rotor et qui est positionné à l'extérieur du rotor dans la direction radiale ; une partie pompe qui est raccordée au rotor sur le côté dans une première direction axiale ; un élément de support qui présente une partie base qui recouvre le stator à partir du côté dans la première direction axiale, et une partie de logement de rotor qui est constituée d'un corps non magnétique, est positionnée vers l'intérieur du stator dans la direction radiale, et loge le rotor en son sein ; et un arbre fixe qui s'étend dans la direction axiale et supporte de manière rotative le rotor. La partie de logement de rotor comprend une partie couvercle qui recouvre le rotor à partir du côté dans l'autre direction axiale, et une partie cylindre qui est positionnée entre le rotor et le stator dans la direction radiale et qui est ouverte sur le côté dans la p