EXHAUST SYSTEM OF GAS HEATER

摘要

PURPOSE: An exhaust system for a gas heater is provided to actively discharge combustion gas by preventing an exhaust pipe from being clogged. CONSTITUTION: An exhaust system of a gas heater comprises an exhaust pipe(11) penetrating wall(10); an air inlet pipe(12) absorbing air by being mounted on an outer circumference of the exhaust pipe; an exhaust pipe cap(20) combined to an end portion of the exhaust pipe; a pipe unit(21) having a cylinder shape; plural through holes(23) formed on the pipe unit; and a counter blow preventing unit(22) sealing the other side portion of the pipe unit. A middle portion of the counter blow preventing unit is protruded toward the exhaust pipe. A thread is formed on a combination portion between the exhaust pipe and the exhaust pipe cap. Thereby, the exhaust system of the gas heater actively discharges combustion gas by preventing the exhaust pipe from being clogged.