Adjustable venturi mixing valve assembly

摘要

A venturi mixing valve assembly includes three open-ended tubular sections. A first section, coupled to a supply of a first gas and a supply of a second gas, has a sleeve defined therein wherein an annular channel open on one end thereof is defined between the sleeve and an inner surface of the first section. A second section defines an annular region with a plurality of holes and a venturi region coupled to the annular region. The annular region circumscribes at least a portion of the first section's sleeve. A third section is threadably coupled to outer surfaces of the first and second sections such that rotation of the third section in a first direction causes the first and second sections to move axially towards one another, while rotation of the third section in a second direction causes the first and second sections to move axially away from one another.

主权项

1. A venturi mixing valve assembly, comprising:
an open-ended first tubular section adapted to be coupled to a supply of a first gas and a supply of a second gas, said first tubular section having a sleeve defined therein wherein an annular channel open on one end thereof is defined between said sleeve and an inner surface of said first tubular section; an open-ended second tubular section defining an annular region with a plurality of holes and a venturi region coupled to said annular region, said annular region circumscribing at least a portion of said sleeve of said first tubular section and sealed to said sleeve; and an open-ended third tubular section threadably coupled to an outer surface of said first tubular section and threadably coupled to an outer surface of said second tubular section, wherein rotation of said third tubular section in a first direction causes said first tubular section and said second tubular section to move axially towards one another, and wherein rotation of said third tubular section in a second direction opposing said first direction causes said first tubular section and said second tubular section to move axially away from one another.