초록 ▼

A fluid flow regulator in which the fluid flow therethrough is restricted twice, first through a fixed orifice in a slidable piston and then through a variable flow restrictor which is a spring. This spring is axially aligned with and bears against the piston, and fluids issuing from the orifice emp

A fluid flow regulator in which the fluid flow therethrough is restricted twice, first through a fixed orifice in a slidable piston and then through a variable flow restrictor which is a spring. This spring is axially aligned with and bears against the piston, and fluids issuing from the orifice empties into the interior of the spring, the end of the spring opposite the piston being closed. Fluids thus flow from within the spring through the gaps between its coils and into a chamber surrounding the spring, and from there exits through the outlet of the regulator. The gaps between the spring coils are quite narrow and cause the flow of fluids to be restricted this second time. This restriction is variable since the piston moves as the differential pressure thereacross varies which causes the length of the spring to vary accordingly. This in turn varies the size of the gaps. In this manner, the regulator compensates automatically to provide a fluid flow rate which is substantially constant.

대표청구항 ▼

A fluid flow regulator device, comprising: (a) housing means having a flow course therethrough; (b) a coil spring in said flow course of said housing: (c) means in said housing supporting said spring and closing the downstream end thereof; (d) a piston slidable in said housing means and closing the

A fluid flow regulator device, comprising: (a) housing means having a flow course therethrough; (b) a coil spring in said flow course of said housing: (c) means in said housing supporting said spring and closing the downstream end thereof; (d) a piston slidable in said housing means and closing the upstream end of said spring, said piston having an orifice therethrough and an external flange thereabout for limiting movement of said piston means relative to said housing and relative to said coil spring; (e) whereby an increase in the flow rate of fluids flowing through said piston orifice and into said spring will displace said piston and cause it to compress said spring to bring the coils thereof closer together to restrict and reduce the rate of flow to thus allow said piston to move in the opposite direction and allow said spring to relax and its coils to move farther apart so that the flow rate of the flowing fluids will be maintained substantially constant.