Electronic infinite step controller actuator

摘要

An unloader assembly and method for unloading a compressor, with the unloader assembly including one or more fingers configured to engage one or more valve elements of a suction valve of the compressor. The unloader assembly also includes a biasing member coupled to the one or more fingers and configured to bias the one or more fingers downward such that the one or more fingers follow the one or more valve elements, and an actuating rod coupled to the one or more fingers and extending longitudinally therefrom. The unloader assembly further includes a first reservoir containing a smart fluid and adapted to receive the actuating rod, and a coil disposed at least one of proximal to and within the first reservoir, with the coil being configured to produce a field when an electrical current is supplied to the coil, to change one or more viscoelastic properties of the smart fluid.

主权项

1. An unloader assembly for a compressor, comprising:
one or more fingers configured to engage one or more valve elements of a suction valve of the compressor, the one or more valve elements being configured to move downward from a closed position to an open position and being biased toward the closed position; a biasing member coupled to the one or more fingers and configured to bias the one or more fingers downward such that the one or more fingers follow the one or more valve elements; an actuating rod coupled to the one or more fingers and extending longitudinally therefrom; a first reservoir containing a smart fluid and adapted to receive the actuating rod; a housing in which the one or more fingers and the actuating rod are at least partially disposed; a pressure balance line extending from within the housing to the first reservoir, such that a pressure in the first reservoir is referenced to a pressure in the housing; and a coil disposed at least one of proximal to and within the first reservoir, the coil being configured to produce a field when an electrical current is supplied to the coil to change one or more viscoelastic properties of the smart fluid.