| 摘要 |
<p>PURPOSE:To rapidly supply hot water of a proper temperature by providing a water flow type heating means for sucking water from the lower part of an inner tank and supplying water to the upper part of the inner tank through a connecting pipe after heating. CONSTITUTION:A connecting pipe 23 is provided outward of a hot water storage tank 11 having an outer tank 13 and an inner tank 12 and a vacuum heat insulating layer 14 between the inner and outer tanks, and an air bubble pump device 22 is disposed in the connecting pipe 23. When power is supplied to an electric heater 24, water in contact with the inner surface of a main pump body 27 is rapidly heated, and hot water within a heating chamber 67 is delivered to a connecting pipe 33. Cool water existing at the lower part within the inner tank 12 is sucked up into the heating chamber 67 via a connecting pipe 30, whereby, when steam bubbles 61 within the heating chamber 67 vanish, the flowing of water through the connecting pipe 30 is stopped, and the temperature of water within the heating chamber 67 is again raised. Hereinafter, this operation is repeated. Accordingly, hot water of 80 deg.C, for example, is supplied from the heating chamber 67 into the inner tank 12 via the connecting pipe 33 and a pipeline 19 part in a laminated state within the inner tank 12, it is made possible to supply hot water of 80 deg.C in a short time.</p> |
