Radially compressible and expandable rotor for a pump having an impeller blade
AssigneeEcp Entwicklungsgesellschaft Mbh
InventorsThomas Toellner, Mario Scheckel
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Abstract
The invention relates to a radially compressible and expandable rotor for a pump having at least one impeller blade, wherein the impeller blade has an impeller blade body whose material is elastically deformable as well as at least one stiffening strut which is at least partially embedded in the material of the impeller blade body. The struts are designed suitably in size, shape and arrangement and are integrated in suitable hollow spaces of the impeller blade body for stabilizing the impeller blade. Elements with tensile strength can additionally be provided.
Claims15
A radially compressible and expandable rotor (13, 13a, 13b) for a pump having at least one impeller blade (19, 20, 22, 36, 36a, 36b, 36c, 36d, 36e, 36f, 36g, 37, 37a, 37b, 37c, 37d, 37e, 37f, 74, 88, 89, 90), wherein the impeller blade has an impeller blade body whose material is elastically deformable as well as at least one stiffening strut (25, 26, 27, 30, 31, 32, 52, 53, 57, 58, 62, 63, 67, 95) which is at least partially embedded in the material of the impeller blade body, and wherein the impeller blade thickness between the pressure side and the suction side amounts to at least 80%, in particular 100%, advantageously more than the thickness of the struts in the same direction, in particular more than the respective largest thickness of a strut.
Dependencies are inferred from the claim text.