| 摘要 |
<p>PURPOSE:To early increase recovery efficiency of heat at warm-up operation of an engine, by concurrently providing engine side and muffler side water passages, interposing a water jacket of the engine and cooling water chamber of the muffler in each water passage and connecting the water jacket of the engine and the cooling water chamber of the muffler through a starting water passage. CONSTITUTION:In a heat pump system, comprising a water-cooled engine 10, cooling water circulating pump 1 and hot water tank 4, the pump 1, water jacket 7 and the hot water tank 4 are connected to form an engine side water passage A. While the pump 1, muffler 8 and the hot water tank 4 are connected to form a muffler side water passage B, and a cooling water chamber 9 of the muffler 8 and the water jacket 7 are connected to form a starting water passage C, then opening-closing valves 15, 15, 16 are provided in the water passages A, B, C. Then under a starting condition of the engine 10, the valves 15, 15 are closed, while the valve 16 is opened, and cooling water from the pump 1 is circulated flowing from the muffler 8 to the water jacket 7 in series to perform recovery of heat.</p> |
