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US 11,098,713 B2Granted
Pump
AssigneeWatson-Marlow Limited
InventorsAchim Staedele, Eric Mayer
Life of this patent
Estimating the term…
Abstract
A pump includes a rotor and a pump housing. The rotor is rotatable about a rotation axis and comprises a rotor hub and a rotor collar. The rotor collar extends from the rotor hub in the radial direction and encircles the rotor hub in an undulating manner. The pump housing comprises a first axial housing component, a central annular housing component, and a second axial housing component. A pump duct is formed (i) in the axial direction by the first and second housing components and (ii) in the radial direction by the central annular housing component and the rotor.
Claims18
A pump comprising:
- a rotor rotatable about a rotation axis and comprising a rotor hub and a rotor collar, the rotor collar extending from the rotor hub in a radial direction and encircling the rotor hub in an undulating manner;
- and
- a pump housing comprising a first axial housing component, a central annular housing component, and a second axial housing component,
- wherein an annular pump duct is formed (i) in an axial direction by the first and second axial housing components and (ii) in the radial direction by the central annular housing component and the rotor;
- and
- wherein the central annular housing component is spaced from the annular pump duct in the radial direction to form inlet/outlet spaces radially spaced outside the annular pump duct and extending over an entire axial height of the annular pump duct, and
- wherein a radial spacing of the central annular housing component narrows in a circumferential direction in a respective end region of the inlet/outlet spaces, such that an edge portion of the inlet/outlet spaces that abuts the annular pump duct forms a portion of a triangular shape in an axial view.
4 more elements
A pump comprising:
- a rotor rotatable about a rotation axis and comprising a rotor hub and a rotor collar, the rotor collar extending from the rotor hub in a radial direction and encircling the rotor hub in an undulating manner;
- a pump housing including a central annular housing component forming an annular pump duct with the rotor, said annular pump duct having a constant cross section and connecting a first radially external inlet/outlet space to a second radially external inlet/outlet space;
- and
- a blocking device arranged between the first radially external inlet/outlet space and the second radially external inlet/outlet space, the blocking device comprising a blocking element blocking the annular pump duct in an axial direction on both sides of the rotor collar,
- wherein the first and second radially external inlet/outlet spaces are formed over an entire axial height of the annular pump duct, and
- wherein a radial spacing of the central annular housing component narrows in a circumferential direction in a respective end region of the first and second radially external inlet/outlet spaces, such that an edge portion of the first and second radially external inlet/outlet spaces that abuts the annular pump duct forms a portion of a triangular shape in an axial view.
3 more elements
Dependencies are inferred from the claim text.