Induction regulator valve for rotary compressors
AssigneeHoerbiger Ventilwerke Aktiengesellschaft
InventorGerhard Kindl
Life of this patent
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Abstract
An induction regulator valve is incorporated in the induction manifold of a compressor to provide for infinitely variable regulation of the output from the rotary type compressor, in particular the screw-type compressor. The closing piece of the induction regulator valve can be adjusted by means of an actuator system. To improve this regulation performance of this system, in particular to reduce its sensitivity when the regulator valve is almost closed, the spring system is formed so that its stiffness varies along the length of its spring path, the stiffness of the spring system being smaller when the induction regulator valve is open than when it approaches the closed position of the closing piece of the induction regulator valve.
Claims12
An induction regulator valve for installation in the induction manifold of a rotary compressor and operable by a pneumatic actuator, comprising:
- a closure member for regulating fluid flow through the valve;
- a displaceable adjusting member accommodating sad closure member and responsive to a pressurized medium to determine an operating position of the closure member that can lie between a closed position and an open position;
- and
- spring means operable to oppose the action of said pressurized medium on an adjusting member, said spring means having a varying stiffness that is less when the operating position of said closure member is closer to its open position than when said closure member is closer to its closed position.
Dependencies are inferred from the claim text.