Patent ID: 8448714

Claim:
A fuse type sprinkler comprising: a body which is fastened to a drain pipe for spraying water through a drain formed inside; a valve of which an upper end is inserted into the drain of the body and to which a sealing unit is mounted along an upper end circumference to press and seal an inner surface of the drain; a frame which is fastened to the body to surround the valve and is provided with a hook on a lower end inner peripheral surface; a heat sensing unit which supports a lower end of the valve to allow the upper end of the valve to be inserted into the drain while being hooked by the hook of the frame, and is provided with a fuse which is separated from the frame to fall off when the fuse is fused by heat; and a deflector which is positioned inside the frame and falls off and is hung on the hook when the heat sensing unit is separated to distribute water sprayed through the drain, wherein the heat sensing unit includes: a pinching plate; a ball balancer positioned under the pinching plate; a heat plate positioned under the ball balancer; balls positioned at a boundary of a space between the pinching plate and the ball balancer to be positioned on an upper portion of the hook; a fixing bolt penetrating centers of the pinching plate, the ball balancer, and the heat plate; a fuse piston fastened to a lower end of the fixing bolt; and the fuse which is set on the fuse piston to support the heat plate.