WATER HEATER, STEAM GENERATOR AND GAS BURNER THEREFOR

摘要

A hot water boiler and/or hot steam generator as well as a gas burner and a water vessel for the hot water boiler and hot steam generator are disclosed. The water boiler or hot steam generator includes a water vessel which includes an elongated flue pipe which is preferably convoluted and which is fully submerged in the water to be heated during normal operation so that the generated heat is distributed along the flue pipe which is also the gas combustion chamber and can be efficiently dispersed into the water surrounding the flue pipe. This invention also describes a gas burner having an elongated body whose internal aperture increases along its length to create a venturi effect to improve combustion of the fuel gas mixture.