US 4,044,991 AGranted

High energy loss fluid flow control device

AssigneeConsolidated Controls Corporation

InventorHenry A. Waller

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Abstract

A high energy loss fluid flow control device comprises a housing having an annular wall with an inlet adjacent one end and an outlet adjacent the other end. The housing wall includes an inside surface formed with a continuous helical land and groove defining at least a part of a helical flow passage between the inlet and outlet. A valve member is mounted in the housing for movement toward and away from the inlet and has an outer surface formed with a continuous helical land and groove also defining at least a part of the helical flow passage extending between opposite ends of the member. The land of the valve member projects into the groove of the housing and the land of the housing wall projects into the groove of the valve member forming the continuous helical flow passage extending between the inlet and outlet and means is provided for supporting the valve member in the housing for relative rotation to move toward and away from the inlet to lengthen or shorten the continuous flow passage as desired.

Claims17

Dependent claims

A high energy loss fluid flow control device comprising:

a housing member having an annular wall with an inlet adjacent one end and an outlet adjacent another end.
said housing wall having an inside surface formed with a continuous helical land and groove defining at least a part of a continuous helical flow passage between said inlet and outlet,
a valve member mounted in said housing for movement toward and away from said inlet and having an outer surface formed with a continuous helical land and groove defining at least a part of said helical flow passage extending between opposite ends of said member,
said land of said valve member projecting into said groove in said housing and said land of said housing wall projecting into said groove in said valve member forming said helical flow passage, and
means independent of said lands and grooves supporting said valve member in said housing for relative rotation and linear movement toward and away from said inlet to lengthen and shorten said continuous flow passage without contact between opposite facing surfaces of said lands projecting into said grooves,
said supporting means including a spindle secured to said valve member and having a threaded portion supported from said housing in threaded engagement with a support member movably mounted thereon.

3 more elements

Dependencies are inferred from the claim text.