Patent ID: 9121602
Filing Date: 2015-09-01
Classification: F22B,F28F

Abstract:
1. A steam generator comprising: a steam chamber having an inner wall defining an enclosed steam chamber, an outer wall being spaced apart from the inner wall, an enclosed fluid chamber being defined by a space between the inner and outer walls of the steam chamber, and a plurality of tubes passing through the enclosed steam chamber, each one of the plurality of the tubes having a passageway extending between a first end of the tube and a second end of the tube; a combustion chamber having an inner wall defining an enclosed air channel an outer wall being spaced apart from the inner wall, an enclosed fluid chamber being defined by a space between the inner and outer walls of the combustion chamber, the inner wall of the combustion chamber having a first end and an opposite second end, the first end of the inner wall of the combustion chamber being in fluid communication with a burner, and the second end of the inner wall of the combustion chamber being in fluid communication with the first ends of the plurality of the tubes of the steam chamber; and a heat transfer section having an inner wall defining an enclosed air channel, an outer wall being spaced apart from the inner wall, an enclosed fluid chamber being defined by a space between the inner and outer walls of the heat transfer section, the inner wall of the heat transfer section having a first end and an opposite second end, the second end of the inner wall of the heat transfer section being in fluid communication with the second ends of the plurality of the tubes of the steam chamber, and the first end of the inner wall of the heat transfer section being in fluid communication with a vacuum source; wherein the steam generator is configured for pumping a fluid on a flow path constraining the fluid to circulate: from the enclosed fluid chamber of the heat transfer section to the enclosed fluid chamber of the steam chamber, and from the enclosed fluid chamber of the steam chamber to the enclosed fluid chamber of the combustion chamber, and from the enclosed fluid chamber of the combustion chamber to the enclosed steam chamber; and wherein the steam generator is configured for causing a heated air mixture to be generated by the burner and drawn by the vacuum source into the enclosed air channel of the combustion chamber, and for causing the heated air mixture to be drawn by the vacuum source from the enclosed air channel of the combustion chamber into the passageways of the plurality of the tubes of the steam chamber, and for causing the heated air mixture to be drawn by the vacuum source from the passageways of the plurality of the tubes of the steam chamber into the enclosed air channel of the heat transfer section.