Gas pressurized liquid pump with intermediate chamber
AssigneeChemand Corporation
InventorKenneth Alan Johnson
Life of this patent
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Abstract
The multi-chamber liquid pump of the present invention includes an input chamber, an intermediate chamber and a liquid output chamber. Pressurized gas provides the motive force for outputting liquid from the pump, such that liquid is output at a constant flow rate during pump operation. Liquid flows into the input chamber, through one or more valves into the intermediate chamber, and through one or more subsequent valves to the output chamber while liquid is constantly output from the output chamber. The system controller provides control signals to the valves to facilitate the pump's continual operation.
Claims17
A multi-chamber liquid pump comprising:
- an input chamber having a means for inputting liquid thereinto;
- an intermediate chamber;
- a liquid output chamber having a means for outputting liquid therefrom;
- a first liquid flow control valve being engaged between said input chamber and said intermediate chamber;
- a second liquid flow control valve being engaged between said intermediate chamber and said output chamber;
- a pressurized gas source being engaged to said output chamber to provide pressurized gas into said output chamber to output liquid from said output chamber;
- said pressurized gas source being engaged to said intermediate chamber to provide pressurized gas to said intermediate chamber;
- and
- a pump controller being operable to control the flow of pressurized gas into and out of said intermediate chamber to control the flow of liquid from said input chamber into said intermediate chamber and from said intermediate chamber into said output chamber.
A method for pumping liquid comprising the steps of:
- inputting liquid into an input chamber of a multiple chamber pump;
- controlling the gas pressure within an intermediate chamber of said pump to cause liquid within said input chamber to flow into said intermediate chamber;
- controlling the gas pressure within said intermediate chamber to cause liquid to flow from said intermediate chamber into an output chamber of said pump;
- controlling the gas pressure within said output chamber of said pump to cause liquid to constantly flow out of said output chamber.
Dependencies are inferred from the claim text.