Patent ID: 9624920
Date: 2017-04-18
CPC Classifications: F04B

Claim:
1. A staged peristaltic pump system configured to displace a working fluid, the system comprising: a system inlet; a system outlet; a plurality of peristaltic pumps disposed in series between the system inlet and the system outlet, each peristaltic pump comprising a rotor which rotates to displace the working fluid; the plurality of peristaltic pumps configured such that a working fluid pressure change across any single pump is approximately the same as the working fluid pressure change across any other pump in the plurality of peristaltic pumps; a plurality of pressure chambers, wherein each pressure chamber of the plurality of pressure chambers is configured to enclose a single pump of the plurality of peristaltic pumps and to maintain an internal pressure therein to be greater than the pressure of an external environment; wherein each said pressure chamber of the plurality of pressure chambers is configured to maintain the internal pressure to be different from the internal pressure within the other pressure chambers, and wherein at least one working fluid pump inlet and at least one working fluid pump outlet are configured to cross at least one wall of the pressure chamber.