| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To carry out space saving and to improve a heat insulation property of a hot water storage tank by using a plurality of heat insulators. <P>SOLUTION: A vacuum heat insulator 11b is formed so as to be along a shape of a side face of a vessel body 3, and an end is formed linearly in a tangential direction of a curved surface of the vessel body 3 away from the vessel body 3. A molded heat insulator 11d is molded in a shape fitting a space shape formed of the vacuum heat insulator 11b and the vessel body 3. A heat seal part of the vacuum heat insulator 11b is arranged so as to be along an outer circumference of the molded heat insulator 11d. By this, a size of the hot water storage tank can be reduced, a radiation loss from gaps formed in portions contacting with the heat insulators can be reduced, and the heat insulation property can be improved. Since the heat seal part does not contact with the vessel body 3, the heat insulation property can be maintained throughout a long period of time. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
