Gas water heater with waste gas purification and filtration functions

Abstract

A gas water heater includes a gas water heater main unit having an exhaust pipe attached thereto for guiding out waste gas during burning of a fuel gas to heat water, an ozone generator installed in the exhaust pipe and electrically connected to an external power source for generating ozone into the exhaust pipe to mix with the waste gas produced during operation of the gas water heater main unit, and a gas filter installed in the exhaust pipe for removing solid matters from the waste gas passing through the exhaust pipe.

1 . A gas water heater, comprising:
 a gas water heater main unit adapted for burning a fuel gas to heat a flow of water passing therethrough, said gas water heater main unit having an exhaust pipe attached thereto, said exhaust pipe having a waste gas inlet for receiving waste gas produced during operation of said gas water heater main unit and a waste gas outlet for output of waste gas into the outside open air;   an ozone generator installed in said exhaust pipe and electrically connected to an external power source and adapted for generating ozone into the exhaust pipe to mix with the waste gas produced during operation of said gas water heater main unit; and   a gas filter installed in said exhaust pipe and adapted for removing solid matters from the waste gas passing through said exhaust pipe.   
     
     
         2 . The gas water heater as claimed in  claim 1 , wherein said gas filter is a precious metal catalyst honeycomb ceramic filter cartridge. 
     
     
         3 . The gas water heater as claimed in  claim 1 , wherein said power source is an AC power supply system. 
     
     
         4 . The gas water heater as claimed in  claim 1 , wherein said ozone generator is installed in said exhaust pipe between said waste gas inlet and said waste gas outlet; said gas filter is installed in said exhaust pipe between said ozone generator and the waste gas outlet of said exhaust pipe.