| 摘要 |
PURPOSE:To make it possible to circulate a condensate without being affected by a heat difference due to pressure loss by providing an opening and closing valve in a condensate pipe at the lower part of a condensing part to intermittently open or close the same, and causing the condensate to flow down. CONSTITUTION:One or two or more opening and closing valves 7a and 7b are mounted at the lower part of the condensing part of a heat insulating condensate pipe 5 connecting the side of a condensate 6 of an evaporating part A to the side of a condensate of a condensing part, at a suitable interval, and a heat exchanger is actuated in a closed state. When the condensate 6a is accumulated on the opening and closing valve 7a, the opening and closing valve 7a is opened and the accumulated condensate 6a is caused to flow down. Thereafter, the opening and closing valve 7a is closed. Since the condensate 6b which has flowed down is accumulated on the valve 7b, the valve 7b is opened to cause the condensate 6b to flow down, and then the valve 7b is closed. As a result, even is there is a high pressure difference, it is possible to cause the circulating condensate to flow down. |
