MICROPUMP
3 Assignments
0 Petitions
Accused Products
Abstract
A pump comprising a housing comprising a rotor chamber, inlet and outlet channels opening into the rotor chamber, and inlet and outlet seals mounted on a surface of the chamber, and a rotor rotatably and axially slidably received in the chamber and comprising a first axial extension comprising a liquid supply channel and a second axial extension comprising a liquid supply channel, the first and second axial extensions having different diameters. The inlet and outlet seals engage a surface of the rotor, whereby the liquid supply channel of each axial extension in conjunction with a corresponding seal forms a valve that opens and closes as a function of the angular and axial displacement of the rotor. At least one of the inlet and outlet channels opens transversely into the rotor chamber and at least one of the inlet and outlet seals forms a closed circuit circumscribing said at least one of the inlet and outlet channels.
-
Citations
32 Claims
-
1-16. -16. (canceled)
-
17. A pump comprising:
-
a housing comprising a rotor chamber, inlet and outlet channels (26) opening into the rotor chamber, and inlet and outlet seals mounted on a surface of the chamber, and a rotor rotatably and axially slidably received in the chamber and comprising a first axial extension comprising a liquid supply channel and a second axial extension comprising a liquid supply channel, the first and second axial extensions having different diameters, said inlet and outlet seals engaging a surface of the rotor, said liquid supply channel of each axial extension in conjunction with a corresponding said seal forming a valve that opens and closes as a function of the angular and axial displacement of the rotor, wherein at least one of the inlet and outlet channels opens transversely or radially into the rotor chamber and at least one of the inlet and outlet seals forms a closed circuit circumscribing said at least one of the inlet and outlet channels. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A method of detecting occlusion or leakage of a pump, including:
- providing a pump comprising;
a housing comprising a rotor chamber, inlet and outlet channels (26) opening into the rotor chamber, and inlet and outlet seals mounted on a surface of the chamber, and a rotor rotatably and axially slidably received in the chamber and comprising a first axial extension comprising a liquid supply channel and a second axial extension comprising a liquid supply channel, the first and second axial extensions having different diameters, said inlet and outlet seals engaging a surface of the rotor, said liquid supply channel of each axial extension in conjunction with a corresponding said seal forming a valve that opens and closes as a function of the angular and axial displacement of the rotor, wherein that at least one of the inlet and outlet channels opens transversely or radially into the rotor chamber and at least one of the inlet and outlet seals forms a closed circuit circumscribing said at least one of the inlet and outlet channels; performing an initial measurement comprising turning the rotor in a forward pumping direction at least one revolution and storing the axial displacement as a function of rotation displacement profile in a look-up table as a cam profile; and measuring the rotor axial displacement as a function of rotation displacement during subsequent pumping and comparing the measured rotor displacement with the stored cam profile. - View Dependent Claims (28, 29)
- providing a pump comprising;
-
30. A method of removing gas bubbles or detecting leakage in a pump comprising a housing and an axially and rotatably movable rotor mounted in the housing and having an inlet valve (V1) and an outlet valve (V2), the method including applying a back and forth displacement of the rotor over an angle less than 180°
- while applying an axial force on the rotor.
- View Dependent Claims (31, 32)
Specification