WATER HEATER MODULE HAVING DETACHABLE HEAT EXCHANGER
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United States of America Patent
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Issued Date -
Mar 24, 2011
app pub date -
Oct 13, 2009
filing date -
Sep 1, 2009
priority date (Note) -
Abandoned
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Abstract
A water heater module of the present invention includes a water heater and an extra heat exchanger. The extra heat exchanger has a spiral pipe and is detachably connected to the water heater. The spiral pipe is heated by high temperature gas from the water heater to pre-heat cold water in the pipe, and then the water is sent to the water heater for further heating that the temperature of the water will be raised within a short time.
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