Spray nozzle design
AssigneeTurbotak Technologies Inc.
InventorsDonald R. Spink, Gordon P. Janes
Life of this patent
Estimating the term…
Abstract
Novel cluster nozzle designs useful for the formation of atomized sprays of fine liquid droplets in a continuous gas phase are described. A plurality of individual gas-liquid mixing zones communicate with a common source of liquid and a common source of gas to form gas-liquid mixtures for spraying from individual orifices in the nozzle. An improved uniformity of spray pattern is attained, as well as the ability to effect a greater liquid output from the nozzle through the use of larger size or numbers of orifices, while retaining very uniform sprays, by effecting a degree of premixing of liquid and gas before passage to the individual gas-liquid mixing zones.
Claims20
A nozzle for the formation of an atomized spray of fine liquid droplets in a continuous gaseous phase or of fine gas bubbles in a continuous liquid phase, which comprises:
- first chamber means for communicating with a source of liquid,
- second chamber means for communicating with a source of gas,
- passage means extending between said second chamber means and said first chamber means for pre-mixing the gas and liquid in said first chamber means to form a first mixture of gas and liquid,
- a plurality of individual mixing chamber means communicating with both said first and second chamber means for mixing said gas from said second chamber means and said first gas liquid mixture from said first chamber means to form an equilibrium two-phase mixture of gas and liquid in each of said individual mixing chamber means for ejection from said nozzle, and
- a plurality of orifice means downstream of and communicating with said plurality of individual mixing chamber means for ejection of the two-phase mixture from each said individual mixing chamber means to form said atomized spray.
The nozzle of claim wherein said nozzle is of cylindrical shape and has a longitudinal axis, and said plurality of orifice means comprise multiple pluralities of orifice means arranged in circles about said longitudinal axis with the orifice means in each successively-wider circle being arranged to eject said second two-phase mixture at successively wider angles to said longitudinal axis.
A nozzle for the formation of an atomized spray of, fine liquid droplets in a continuous gaseous phase or of fine gas bubbles in a continuous liquid phase, said nozzle being of cylindrical shape and having a longitudinal axis, which comprises:
- first chamber means for communicating with a source of liquid,
- second chamber means for communicating with a source of gas,
- passage means extending between said second chamber means and said first chamber means for pre-mixing the gas and liquid in said first chamber means to form a first mixture of gas and liquid,
- a plurality of individual mixing chamber means communicating with both said first and second chamber means for mixing said gas from said second chamber means and said first gas/liquid mixture from said first chamber means to form an equilibrium two-phase mixture of gas and liquid in each of said individual mixing chamber means for ejection from said nozzle, and
- a plurality of orifice means downstream of and communicating with said plurality of individual mixing chamber means arranged for ejection of the two-phase mixture from each said individual mixing chamber means substantially perpendicularly to said longitudinal axis to form said atomized spray.
A nozzle of generally cylindrical shape for the formation of an atomized spray of fine liquid droplets in a continuous gaseous phase or of fine gas bubbles in a continuous liquid phase, which comprises:
- first chamber means comprising a single cylindrical chamber means axially extending within said nozzle from an inlet end for communicating with source of liquid to an outlet end,
- second chamber means comprising a single annular chamber means axially extending within said nozzle concentrically with said single cylindrical chamber means and having an opening in an exterior side wall thereof for communicating with a source of gas,
- third chamber means separated from said second chamber means by annular internal wall means,
- a plurality of axially-directed passages through
- internal wall extending between said second and third chamber means for flow of gas from said second chamber means to said third chamber means,
- a plurality of individual mixing chamber means communicating with the outlet end of said first chamber means for receiving liquid therefrom and said third chamber means for receiving gas therefrom and for mixing the gas and liquid to form a two-phase mixture of the gas and liquid in each of the individual mixing chamber means for ejection from said nozzle, and
- a plurality of orifice means downstream of and communicating with said plurality of individual mixing chamber means for ejection of the two-phase mixture from each said individual mixing chamber means to form the atomized spray.
A method of forming an atomized spray of fine liquid droplets in a continuous gaseous phase or of fine gas bubbles in a continuous liquid phase, which comprises:
- feeding a liquid and a gas to a first gas-liquid mixing zone and forming a first mixture of gas and liquid in said first gas-liquid mixing zone,
- feeding said first gas-liquid mixture and a gas to a plurality of individual second gas-liquid mixing zones and forming an equilibrium two-phase mixture of gas and liquid in each of said individual second gas-liquid mixing zones, and
- ejecting said two-phase mixture from each of said individual second gas-liquid mixing zones through orifices to form said atomized spray.
Dependencies are inferred from the claim text.