Patent ID: 9644892
Date: 2017-05-09
CPC Classifications: F26B

Claim:
1. An internal staged suppression system for a grain dryer, the system comprising: an inlet in fluid communication with a drainage elbow; at least one vertical column section in fluid communication with the drainage elbow and a portion of the vertical column section extending along an exterior of a grain dryer and a portion extending in an interior of the grain dryer; at least one horizontal column in fluid communication with the vertical column and linearly extending to a terminal end; at least two spray heads, spaced vertically apart from each other; wherein at least one of the spray heads is secured to the terminal end of the horizontal column and having a deflector cap that defines a lift off height, the lift off height being configured such that a water spray pattern is a generally horizontal spray pattern; wherein the at least two spray heads are positioned in a generally radial center of the interior of the grain dryer, the generally horizontal water spray pattern being sufficient to cascade water over interior walls of a plurality of grain columns spaced around the grain dryer interior; wherein the deflector cap is biased in a closed position relative to a spray base; wherein the spray base includes a diffuser configured to divide an incoming water stream such that the generally horizontal water spray pattern is maintained; and wherein at least one of the spray heads is located in a generally radial center of a burner section of the grain dryer.