| 摘要 |
PURPOSE:To contrive the improvement in thermal efficiency as a whole of a device, by providing a mixing chamber connected with a combustion chamber of a pulse combustion device within an air chamber supplying air in an air supply path. CONSTITUTION:At the time of operation of a pulse combustion device a mixing chamber 25 is cooled by blowing the open air at a low temperature state sucked by driving of a blower 35 provided within an air chamber 34 against the mixing chamber 25 to be heated at a high temperature state. Then the thermal expansion of the air and fuel gas to be led within the mixing chamber 25 through an air supply pipe 29 and a fuel supply pipe 30 is reduced. With this construction, a quantity of combustion is increased by increasing a quantity of supply of a fuel- air mixture to be used for combustion by making specific volume small. In addition to the above, the hot air heated through heat exchange with the mixing chamber 25 is led within the mixing chamber 25 from an air flap valve 31 through the air supply pipe 29 and used for pulse combustion. Then a dissipating quantity of heat from the mixing chamber 25 can be used for heating of water in a heating tank 21 and thermal efficiency as a whole of a hot water supply device is improved. |
