Residental sprinkler arrangement

摘要

In the particular embodiment disclosed in the specification, a sprinkler has a sprinkler body with a passage having an orifice providing a K factor of about 3 to 6 which is normally closed by a cap retained in position by a glass bulb thermally responsive element. A deflector spaced from the orifice and supported from the sprinkler body by a pair of frame arms has a circumferential array of tines separated by radial slot-like openings and two openings located in the plane in the frame arms have a length greater than that of the other slot-like openings while four openings located at 45° to the plane of the frame arms are shorter than the other openings. The openings in the plane of the frame arms have a width of about 25% to 75% of the width of the frame arms adjacent to the deflector and a root diameter of about 150% to 300% of the width of the frame arms adjacent to the deflector.