Patent ID: 7093566
Filing Date: 2006-08-22
Classification: F22B,F22D,F28D

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