The invention discloses a nanometer physicochemical 
vapor generator. The nanometer physicochemical 
vapor generator comprises a shell with a heat source cavity and a 
water storage cavity, at least one nanometer physicochemical thermodynamic unit penetrates from the heat source cavity into the 
water storage cavity, the lower portions of the nanometer physicochemical thermodynamic units are disposed in the heat source cavity, the middle and upper portions of the nanometer physicochemical thermodynamic units are disposed in the 
water storage cavity, a vapor output port is formed in the top of the water storage cavity, a water inlet connected with a water inlet 
pipe is formed in the water storage cavity, a fuel 
combustor is fully or partly arranged in the heat source cavity, each nanometer physicochemical thermodynamic unit comprises a 
metal pipe with a sealed bottom end, a vacuum valve sealing the top end of each 
metal pipe is arranged at the top end of the corresponding 
metal pipe, a heat conduction nanometer synthetic medium is accommodated in the lower end of each metal pipe, and a vacuum heat conduction cavity is reserved between the vacuum valve in each metal pipe and the corresponding heat conduction nanometer synthetic medium. The nanometer physicochemical 
vapor generator is simple in structure, quick in heat conduction, smokeless, dust-free, 
pollution-free, capable of conducting heat to heat so as to generate vapor circularly and high in 
heating efficiency which 1-3 times of that of a normal heat conduction manner, the heat 
utilization rate reaches to 99% and the emission 
reduction rate is above 90%.