Nozzles with internal manifolding

Abstract

A nozzle includes a nozzle body defining a liquid circuit extending from a liquid inlet to a liquid outlet. The liquid circuit includes a plurality of spiral liquid passages spiraling radially inward relative to a spray axis. The spiral liquid passages all lie in a plane normal to the spray axis. A manifold assembly includes a plurality of such nozzles. A manifold ring is in fluid communication with the liquid inlet of each of the nozzles to deliver liquid to the nozzles. The nozzles are circumferentially spaced apart around the manifold ring.

What is claimed is: 
     
         1 . A method of assembling a liquid circuit comprising:
 abutting a liquid swirler with at least one groove defined therein against a nozzle body so the at least one groove forms a spiral liquid passage that spirals radially inward relative to a spray axis, each of the at least one spiral liquid passages laying in a plane normal to the spray axis.   
     
     
         2 . The method as recited in  claim 1 , wherein the nozzle includes a heat shield mounted to a downstream face thereof. 
     
     
         3 . The method as recited in  claim 2 , wherein the nozzle includes an inner air circuit passing inboard of a liquid outlet and an outer air circuit passing outboard of the liquid outlet. 
     
     
         4 . The method as recited in  claim 3 , wherein the inner air circuit extends radially inward from an inlet thereof and turns in an axial direction to an outlet thereof radially inboard of the liquid outlet. 
     
     
         5 . The method as recited in  claim 4 , further comprising mounting a radial air swirler to the nozzle body, wherein radial air slots defined in the radial air swirler define an inlet of the inner air circuit. 
     
     
         6 . The method as recited in  claim 4 , wherein the inner air circuit and liquid circuit are in a co-swirling configuration. 
     
     
         7 . The method as recited in  claim 1 , each spiral liquid passage defines a respective outlet orifice of the liquid outlet. 
     
     
         8 . The method as recited in  claim 7 , wherein the outlet orifice defines an orifice axis that has a tangential component relative to the spray axis and lies in the plane normal to the spray axis. 
     
     
         9 . The method as recited in  claim 1 , wherein the nozzle body includes an outer air circuit passing outboard of a liquid outlet. 
     
     
         10 . The method as recited in  claim 9 , wherein the outer air circuit extends radially inward from an inlet thereof and turns in an axial direction to an outlet thereof radially outboard of the liquid outlet. 
     
     
         11 . The method as recited in  claim 9 , wherein the nozzle body includes a plurality of spacers extending from an annular face of the nozzle body in a parallel direction to the spray axis, and further comprising a heat shield mounted to the nozzle body, spaced apart from the nozzle body by the spacers, wherein the outer air circuit is defined between the nozzle body, spacers, and heat shield. 
     
     
         12 . The method as recited in  claim 11 , wherein the spacers define a non-tangential flow path for non-swirling issue of air through the outer air circuit. 
     
     
         13 . The method as recited in  claim 1 , wherein the nozzle body includes inner and outer manifold ring segments, wherein at least one of the ring segments includes a liquid manifold passage in fluid communication with the liquid inlet of the liquid circuit. 
     
     
         14 . The method as recited in  claim 13 , wherein at least one of the ring segments includes a bayonet feature configured to receive a corresponding bayonet feature of a combustor wall or combustor sliding support.