| 摘要 |
<p>The present invention relates to a condensing boiler comprising a burner, a sensible heat exchanger for absorbing combustion heat generated by the burner, and a latent heat exchanger for absorbing latent heat from water vapor contained in a combustion gas which has completed heat exchanging in the sensible heat exchanger. The latent heat exchanger comprises: a first heat exchange portion comprising one or more latent heat exchange pipes; an induction duct for inducing the combustion gas which has passed through the sensible heat exchanger to the upper space in the first heat exchange portion; a second heat exchange portion comprising one or more latent heat exchange pipes for absorbing latent heat of the combustion gas a second time, wherein the latent heat of the combustion gas is absorbed for the first time in the first heat exchange portion; a combustion gas passage portion for inducing to the upper space in the second heat exchange portion the combustion gas which has been shifted from the upper space to the lower space in the first heat exchange portion; and a condensation water discharge port for discharging condensation water produced from the first and second heat exchange portions.</p> |
