OUTER AIR SUCTION AND INNER AIR EXHAUST DEVICE IN FRICTIONAL HEAT GENERATING MECHANISM AT EQUILIBRIUM UNDER REDUCED PRESSURE

摘要

PURPOSE:To enable to prevent the temperature in a hollow chamber from lowering by a method wherein the outer air suction action and inner air exhaustion action are acted in opposite directions in one and the same heat exchange mechanism and the nearly perfect heat exchange is performed by absorbing the heat quantity possesed by the high temperature gas in exhaustion stage with the low temperature gas in a suction stage. CONSTITUTION:The inner air is gradually exhausted by means of the suction and exhaustion action of a fan 6 through an inner air exhaust part 9 and the air pressure in the hollow chamber 1 is reduced. At equilibrium under reduced pressure, the stagnation phenomenon of the air occurs at a frictional heat generating part 8 within the rotational region of the fan 6 and frictional heat is generated at the part 8 and gradually raises the temperature of the air around the part 8 and successively said frictional heat is transmitted in the hollow chamber 1, resulting in enabling to heat the interior of the hollow chamber 1 up to the desired temperature. The outer air is diffusedly flowed in zigzags through a passage 18 and via a large number of heat exchange tubes 11 and two rows of space parts 14 and 14 into the hollow chamber 1. The water-containing gas in the hollow chamber 1, the volume of which corresponds to that of the inflowing outer air, is heat-exchanged with the inflowing outer air and exhausted outside through an inner air exhaust part 12.