Pump housing with an interior for accommodating a pump rotor
AssigneeEcp Entwicklungsgesellschaft Mbh
InventorsLars Bredenbreuker, Joerg Schumacher
Life of this patent
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Abstract
In a pump housing having an interior for accommodating a pump rotor, which may be transferred from a radially compressed state into a radially expanded state, and comprises a housing skin revolving in circumferential direction, as well as at least one reinforcement element, a stretch-resistant element revolving in circumferential direction is provided, which is stretched less than 5% in the expanded state as opposed to the force-free state in circumferential direction, and which limits any further expansion of the pump housing in radial direction.
Claims25
A pump housing having an interior for accommodating a compressible pump rotor, the housing comprising:
- a stretch-resistant, radially compressible housing skin extending in a circumferential direction, the housing skin formed of a material that tightens in an expanded state such that a fully expanded housing skin defines a maximum expanded state of the housing;
- and
- at least one reinforcement configured to expand in the circumferential direction along with expansion of the housing skin wherein a ring surrounds the at least one reinforcement at least in sections,
- wherein a diameter of the pump housing increases along a longitudinal direction in the maximum expanded state of the housing.
A pump housing having an interior for accommodating a compressible and an expandable pump rotor, the housing comprising;
- a stretch-resistant, radially compressible housing skin extending in a circumferential direction, the housing skin formed of a stretch-resistant material, wherein a fully expanded housing skin defines a maximum expanded state of the housing;
- at least one reinforcement, the at least one reinforcement configured to expand in the circumferential direction along with expansion of the housing skin;
- wherein the material comprises at least one stretch-resistant fiber extending in the circumferential direction wherein the at least one stretch-resistant fiber is selected from the group consisting of glass fibers, carbon fibers, aramide fibers, and nylon fibers;
- and
- the pump housing having a compressible and expandable pump rotor accommodated therein wherein the rotor comprises blades comprising radially external ends, wherein the radially external ends and the interior of the housing form an intermediate gap therebetween, and wherein a size of the intermediate gap is minimized during rotation of the rotor.
A pump housing having an interior for accommodating a compressible and an expandable pump rotor, the housing comprising;
- a stretch-resistant, radially compressible housing skin extending in a circumferential direction, the housing skin formed of a stretch-resistant material, wherein a fully expanded housing skin defines a maximum expanded state of the housing;
- at least one reinforcement, the at least one reinforcement configured to expand in the circumferential direction along with expansion of the housing skin;
- wherein the material comprises at least one stretch-resistant fiber extending in the circumferential direction wherein the at least one stretch-resistant fiber is selected from the group consisting of glass fibers, carbon fibers, aramide fibers, and nylon fibers;
- and
- wherein a diameter of the pump housing increases along a longitudinal direction in the maximum expanded state of the housing.
Dependencies are inferred from the claim text.