| 摘要 |
The invention provides an exhaust heat recovering device. The exhaust heat recovering device comprises an evaporator, an expansion machine, a rotation machine, a condenser, a pump, a pressure sensor, and a control portion. The evaporator includes a heating medium flow path for flowing of a heating medium, and a motion medium flow path for flowing of a motion medium, wherein the heating medium is formed by steam or gas. The pressure sensor detects at least one of the pressure of the heating medium supplied to the heating medium flow path, the pressure of the heating medium flowing out of the heating medium flow path, the pressure of the motion medium flowing out of the motion medium flow path, and the pressure of the motion medium flowing into the motion medium flow path. When an obtained value obtained during a measuring period is greater than an upper limit value and smaller than a lower limit value within the allowed variable range which is based on a representative value associated with a detection value, obtained in advance, of the pressure sensor, the control portion enables the amount of the motion medium flowing into the motion medium flow path to be reduced. Through the above structure, liquid supplied to the heating medium formed by steam or gas in the evaporator is obviously prevented from changing in flow rate to cause water attach. |
