Variable timing valves for gas compressors and expanders
OwnerJeffrey Lewis Barberinventor
Life of this patent
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Abstract
Variable valve timing is provided to control compressors and expanders in a fuel cell powering system in order to provide for matching the displaced volume of the compressor and expander over a range of pressure delivery requirements. A movable timing edge is positioned adjacent inlet and/or discharge ports to cooperate with a movable valve element with inlet and outlet slots to adjust the time and time period of open and close operations. Several embodiments are presented.
Claims18
A variable timing valve for a fluid supply apparatus comprising
- a movable element having inlet and outlet slots therein;
- a cylinder head with ports comprised of inlet ports and discharge ports, the number of inlet ports equal to the number of discharge ports, inlet slots, and outlet slots, said movable element positioned adjacent to said cylinder head such that said inlet and outlet slots can be moved into a first position that blocks said ports, into a second position that opens said inlet ports, and into a third position that opens said discharge ports;
- and
- a movable timing edge positioned adjacent to said cylinder head, said movable timing edge capable of blocking a portion of at least one of said inlet and discharge ports.
A method of controlling the efficiency of fluid supply apparatus as the delivery requirement of volume and pressure change comprising
- providing said apparatus including a cylinder head with inlet ports and discharge ports;
- providing a movable element with inlet slots and outlet slots which in assembly is positioned adjacent said cylinder head such that the inlet and outlet slots can be moved into a first position that opens said inlet ports and into a second position that opens said discharge ports;
- providing a movable timing edge which in assembly is positioned adjacent to said cylinder head, said movable timing edge capable of blocking at least a portion of at least one of said inlet and discharge ports.
Dependencies are inferred from the claim text.