| 摘要 |
PURPOSE:To eliminate the variation of jet temperature due to that of rotational frequency of an engine by providing a plate-shaped adjusting valve having in series two flow adjusting means perpendicular to warm water flow and connecting the upstream side of a bypass valve between both adjusting means. CONSTITUTION:A flow adjusting valve 24 is set to the intermediate position between the position of non-heating period and that of the highest heating period to communicate selectively flow adjusting holes 27a, 27b, 27c in the first plate member 24a to the first warm water inlet path 4 and flow adjusting holes 28a, 28b, 28c in the second plte member 24b to the second warm water outlet path 12 respectively. Since a portion of the warm water passing through the flow adjusting holes 27a, 27b, 27c flows into a bypass 37, the warm water jet pressure of an engine 8 is raised by the increase of the revolution of the engine to open a bypass valve 38 for bypassing the warm water. Thus, even if the revolution of the engine is varied, the flow of the warm water to a heat exchanger 15 is maintained at a set amount so long as the opening of the adjusting valve 24 is constant. Hence, the variation of the jet air temperature is prevented. |
