Loading patent…
AssigneeKalsi Engineering, Inc.
InventorsZachary Wade Leutwyler, Emil Mack Leutwyler, Mital Chandrakant Mistry, Manmohan Singh Kalsi
Estimating the term…
A passive, modulating flow control valve including a poppet having a precisely designed and constant unbalanced area. A spring rate is selected to achieve the desired poppet travel over the desired range of differential pressure. Preferably, the spring preload is selected such that the poppet will remain fully open until a specified minimum differential pressure is reached. The unbalanced area and spring force allow the poppet to reposition proportional to the differential pressure throughout the design range of differential pressure. An array of radial holes in the poppet are used to define the trim characteristics. As the poppet is pushed closed by the differential pressure, few radial holes remain uncovered, which increases the flow resistance. The single modulating poppet includes flow and trim characteristics that respond directly to differential pressure acting on it to achieve tight control of the mass flow rate.
A passive modulating flow control valve for maintaining a substantially constant mass flow rate over a fluid differential pressure design range across the valve, the valve comprising:
A passive modulating flow control valve comprising:
A passive modulating flow control valve comprising:
Dependencies are inferred from the claim text.