Patent ID: 7547005
Filing Date: 2009-06-16
Classification: F22B,Y10S

Abstract:
1. A vapor delivery system, comprising: a chamber adapted to contain a liquid and a vapor from the liquid, wherein the chamber includes a port configured to couple the chamber to a vacuum so as to enable a pressure in the chamber to be lowered below atmospheric pressure; a vapor outlet arranged relative to the chamber so as to be capable of exhausting the vapor from the chamber; a pressure sensor within the chamber and arranged outside of the liquid to measure the pressure in the chamber, wherein the sensor is configured to provide a signal indicative of the pressure in the chamber; a heater coupled to the chamber and arranged so as to be capable of imparting heat to the liquid; and a control circuit coupled to the pressure sensor and the heater, wherein the control circuit is configured to increase an amount of heat imparted to the liquid by the heater in response to the signal indicating a drop in the pressure of the chamber.