METHOD INSTALLING OF HEAT PRESERVING LAYER IN HOT SPRING WELL AND HEAT RESERVING CYLINDER FOR HOT SPRING WELL

摘要

PURPOSE:To make it possible to simply form a heat reserving layer even for a hot spring well constructed already by inserting a heat reserving cylinder provided with high water absorbable resin arranged on its outer peripheral surface into a casing for forming a heat reserving layer with resin between the casing and the heat reserving cylinder. CONSTITUTION:Being inserted from the upper part of an upper casing 2, a heat reserving cylinder 5 sinks into hot water inside a casing 1 until the bottom end of the heat reserving cylinder 5 abuts on a connecting ring 4, the heat reserving cylinder 5 generates a clearance between the upper casing 2 and itself, and becomes in a state of soaked into the hot water in the casing 1. Then, a high water absorbable resin layer made to stick to the outer periph eral surface of the heat reserving cylinder 5 comes in contact with hot spring hot water, this high water absorbable resin absorbs water to expand, increases its volume, the outer peripheral surface of the high water absorbable resin layer reaches the inner wall of the upper casing 2, and a heat reserving layer 6B is formed by filling up the clearance between both with the high water absorbable resin layer containing hot water. Therefore, it is possible to simply form the heat reserving layer 6B, and it is possible to simply form the heat reserving layer 6B even for a hot spring well already constructed and having no heat reserving layer 6B.