Water heater
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United States of America Patent
Stats
-
Dec 6, 2005
Grant Date -
Feb 24, 2005
app pub date -
Aug 13, 2004
filing date -
Aug 20, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A water heater is provided in which neutralization process of drain is not required and an excellent heat efficiency is achieved. A route of exhaust gas which is passing through the main heat exchanger 18 is divided into a first exhaust gas chamber 23 having a secondary heat exchanger 19 and a second exhaust gas chamber 24 having a drain evaporator. Because of this, hot exhaust gas which is passing through only the main heat exchanger 18 flows into both the secondary heat exchanger 19 and the drain evaporator 100. Therefore, in the secondary heat exchanger 19 exhaust gas heat can be efficiently recovered by utilizing the hot exhaust gas, and in the drain evaporator 100 drain can be evaporated efficiently by utilizing the hot exhaust gas.
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Family
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