The vacuum multi-purpose furnace uses the characteristics of low boiling point of water under low pressure to rapidly heat the heat medium water filled in the sealed furnace body. The heat medium water boils  evaporates the high-temperature water vapor,  the water vapor condenses on the heat exchange tube to heat the cold water in the heat exchange tube, so as to supply hot water.

(1) Vacuum negative pressure operation, no explosion, excellent safety.

(2) The successful separation of high temperature zone  high pressure zone of the stressed steel plate can prolong the service life by 2-3 times,  the design service life can reach 30 years.

(3) The overall design is scientific, reasonable  compact, saving 50-70% of the floor area.

(4) When heat exchange is carried out in the body, the efficiency of the whole machine is over 91%,  70-80 ℃ hot water can be provided within 2-3 minutes after start-up, which greatly shortens the preheating period  reduces energy waste.

(5) Fully automatic control, intelligent, unmanned operation  remote network control.

(6) Built in stainless steel heat exchanger, no pollution to water quality.

(7) Compared with indirect heating (boiler + external heat exchanger + circulating water pump + material + installation cost), the installation cost is saved by more than 30-40%.

(8) With high efficiency, fast heating  good heat exchange, the fuel cost can be saved by more than 20-30%.