| 摘要 |
<P>PROBLEM TO BE SOLVED: To keep quality of a fluid, to prevent leakage of a fluid for heat exchange, to restrain the quantity of the fluid for heat exchange to be used, and to properly keep heat-retention efficiency and flow of the fluid for heat exchange, when the temperature of the fluid is kept. <P>SOLUTION: This fluid heat-retention device is provided with: a heat exchange duct 31 used for guiding cooled cooling water (fluid for heat exchange) and having thermal conductivity; a supply duct 32 used for guiding drinking water (desired fluid) and having thermal conductivity; a heat insulation pipe 33 including the heat exchange duct 31 and the supply duct 32 by bundling them and having a heat insulation property; and a filler material 34 used for filling a space between the heat exchange duct 31 and the supply duct 32 in the heat insulation pipe 33 and having thermal conductivity. That is to say, the cold of the cooling water is tranferred to the drinking water in the supply duct 32 through the heat exchange duct 31 and the filler material 34 and the drinking water is cooled and retained in temperature, whereby the supply duct 32 is prevented from being directly soused in the cooling water. As a result, beverage quality is kept, the leakage of the cooling water is prevented, the quantity of the cooling water to be used is restrained and the cooling (heat-retention) efficiency and the flow of the cooling water are properly kept. <P>COPYRIGHT: (C)2007,JPO&INPIT |
