| 摘要 |
A container having a chamber with a cool water inlet disposed at the top thereof in a burner near the bottom thereof. An exhaust for flue gases is disposed at the top of the container. A first heat exchange zone is disposed in the chamber above the burner inlet for permitting the rising heat and products of combustion to contact the falling water from the water inlet. A second heat exchange zone is disposed in the chamber below the first heat exchange zone and a heat exchange pipe is disposed in the second heat exchange zone for being in direct contact with the flame of the burner. A pool of heated water is disposed at the bottom of the container and is pumped therefrom through the heat exchanger in the second zone whereby the water therein will be heated and pumped to a radiator or other place where the heat is needed. A third heat exchange zone is provided for receiving the exhaust flue gases and using such heat to heat the same zone as the other heat exchangers, another zone, or another medium.
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