| 摘要 |
A pump having a canned motor which has a stator with an internal rotor disposed therein, the stator and the internal rotor being mutually separated fluid-tightly by a can disposed between stator and internal rotor, the stator having stator teeth which extend radially in the direction of the internal rotor and define with appurtenant stator-tooth end faces a receiving space for the internal rotor and the can, the can lying against the stator-tooth end faces, the can having on its surface facing the stator, in stator-tooth gaps which are respectively defined by two mutually adjacent stator teeth, ribs fitted in in a form-locking manner which taper in the radial direction, starting out from a rib root disposed on the can, with regard to a rib thickness defined in the circumferential direction of the can. |
| 主权项 |
1. A pump having a canned motor comprising:
with an internal rotor disposed therein, the stator and the internal rotor being mutually separated fluid-tightly by a can disposed between stator and internal rotor, the stator having stator teeth which extend radially in the direction of the internal rotor and define with appurtenant stator-tooth end faces a receiving space for the internal rotor and the can, the can lying against the stator-tooth end faces and having on its surface facing the stator, in stator-tooth gaps which are respectively defined by two mutually adjacent stator teeth, ribs fitted in in a form-locking manner which taper in the radial direction, starting out from a rib root disposed on the can, with regard to a height of the ribs defined in the circumferential direction of the can, a stator tooth comprising of a stator tooth shank and a stator tooth head having two stator-tooth-head members which respectively protrude beyond the stator tooth shank in both circumferential directions of the can, characterized in that rib flanks formed by side lines of the ribs are respectively in contact, over the region of the height of the ribs, with a contour of the stator-tooth-head members which is shaped complementarily to the side lines, as bearing points fixed against shearing-off, wherein the stator-tooth contour and thus the height of the ribs is so designed that equivalent stresses in the can are always smaller than the breaking point of the can material in the total region of the can under operating pressure load. |
