Patent ID: 7810745
Filing Date: 2010-10-12
Classification: F02M

Abstract:
1. A nozzle device being substantially in a plate-shape, the nozzle device comprising: a nozzle portion having a plurality of nozzle holes for injecting a plurality of sprays grouped into a plurality of spray groups respectively injected in injection directions different from each other, wherein the nozzle portion has an injection axis extending through a center of the nozzle portion in a thickness direction of the nozzle portion, the injection axis perpendicularly intersects with an imaginary plane, which is at a predetermined distance from the nozzle portion in the injection directions, the plurality of nozzle holes of each of the plurality of spray groups respectively have passage axes from which imaginary lines respectively extend in the injection directions, the imaginary plane and the imaginary lines respectively intersect, defining a plurality of intersections, and each of the plurality of nozzle holes is inclined at an inclination angle being determined in such a manner that: for at least one of the spray groups, the imaginary plane and the imaginary lines of said spray group have intersections respectively defining a plurality of outer intersections and at least one inner intersection, the plurality of outer intersections define a first polygon, which is outwardly convex, or a first circle, and the at least one inner intersection is disposed inside the plurality of outer intersections, wherein every inner intersection is located on a single intercentral line, which extends along the imaginary plane through a center of the first polygon or the first circle defined by the outer intersection.