| 摘要 |
A vapor generator comprising an evaporator unit, which in turn includes an inner chamber for containing a first fluid in a liquid state, and further includes a preheated liquid inlet and a vapor outlet, the evaporator unit having a heating device therein which can be activated for vaporizing the first fluid contained in the inner chamber to generate vapor. The vapor generator further comprises a preheating tank defining an inner chamber and comprising a liquid inlet for injection of the first fluid in a liquid state in the inner chamber, and a liquid outlet. Moreover, the vapor generator comprises an opened liquid channel connecting the preheating tank liquid outlet to the evaporator unit liquid inlet, and establishing free and continuous fluid communication between the preheating tank inner chamber and the evaporator unit inner chamber. The first fluid in a liquid state injected through the preheating tank liquid inlet is continuously distributed between the evaporator unit inner chamber and the preheating tank inner chamber through the liquid channel, and the heating device of the evaporator unit can be activated for generating a temperature gradient across the liquid-state first fluid contained in the evaporator unit inner chamber, the liquid channel and the preheating tank inner chamber, the first fluid being thereby gradually preheated while it circulates from the preheating tank through the liquid channel and into the evaporator unit for being vaporized therein.
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