PURPOSE: To dispense with a pressure safety valve and prevent damage to an air pipe even when the clogging occurs in it by connection a steam discharge port so as to communicate with the main body and mounting it freely movably, making it possible to let the steam pressure escape, and providing a silencer body with many holes to pass the steam.
CONSTITUTION: The water that is heated in a steam generator separates out the scale ingredient and is sent with the steam to a steam discharge device 1. As the time of use passes, scale 14 attaches the inner face of a silencer body 4 and the porous section gradually to cause clogging. This clogging raises the pressure applied to the inside and it finally becomes P2. At this time a silencer body 4 overcomes the load by a spring 5 which presses down the silencer body 4 and it moves in the direction of A and makes an open section (the steam and pressure escape hole) between the silencer body 4 and the connection port 2a of the main body 2 of the steam discharge port. The steam is thereby dis charged into the water to reduce the inner pressure and the pressure returns to P1.
ADACHI YOSHIYUKI
YAMAUCHI HIROAKI
