JPS6433446A - Humidifier - Google Patents

Abstract

PURPOSE:To reduce damage to a water tank and expansion pipe and increase their life by arranging horizontally the expansion pipe incorporating a heater in a water tank and supporting the one side of the expansion pipe at the wall of the water tank and at the same time providing a flange section on the outer circumference of the side of the expansion pipe that is supported by the wall of the water tank. CONSTITUTION:In a water tank 4 an expansion tube 5 which is made of stainless steel and incorporates a heater 11 is laid horizontally. A flange section 12 is provided around the insertion side of the heater 11 is this expansion pipe 5, and this empansion pipe 5 is divided into the side of the insertion of the heater 11 and the side opposite to it. The wall of the water tank 4 and the expansion pipe 5 are not connected into one body, and because the connection of the expansion pipe 5 to the wall of the water tank 4 is effected by abutting the flange section 12 to the inside of the wall of the water tank 4, the restraint to the mutual deformation is alleviated and the deformations of the water talk 4 and expansion pipe 5 due to change in temperature can be made relatively freely. Accordingly, excessively large stress, etc., are not developed and damage to the water tank 4 and expansion pipe 5 is little nd their life is extended.