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US 9,551,435 B2Granted
Method of preventing clogging in a microvalve
AssigneeDunAn Microstaq, Inc.
InventorsParthiban Arunasalam, Arvind Panduranga Rao, Dhaman Kumar Besarla, Gengxun Kara Gurley
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Abstract
A method of cleaning contaminants, including particulate contaminants, from a valve in a fluid system includes moving a valve flow control element of the valve from a first position to a second position in response to a change in a condition in the fluid system other than a change in superheat.
Claims20
A method of cleaning contaminants from a valve in a fluid system comprising:
- operating a valve in an open position wherein a valve flow control element is positioned relative to a fluid port of the valve to allow fluid flow through the fluid port;
- and
- moving the valve flow control element of the valve through a clean cycle step while the valve is in the open position, the clean cycle step including moving the valve flow control element from a first position to a second position and to one of the first position and a position intermediate the first and the second positions while the valve remains in the open position.
A method of cleaning contaminants from a valve in a fluid system comprising:
- moving a valve flow control element of the valve through a clean cycle step at first cycle rate;
- moving the valve flow control element of the valve through a clean cycle step at second cycle rate different than the first cycle rate;
- wherein the clean cycle step includes moving the valve flow control element from a first position to a second position;
- wherein the first and second cycle rates are defined as one or more clean cycle steps per a unit of time;
- and
- wherein each clean cycle step is performed without affecting the fluid system during execution of the clean cycle step.
3 more elements
A method of cleaning contaminants from a valve in a fluid system comprising:
- moving a valve flow control element of the valve through a clean cycle step;
- wherein the clean cycle step includes moving the valve flow control element from a first position to a second position and back to the first position;
- and
- wherein the clean cycle step is performed without affecting the fluid system during execution of the clean cycle step.
1 more element
Dependencies are inferred from the claim text.