Importance

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Abstract

The present invention relates to a heat exchanger that can enhance thermal efficiency by enabling combustion heat of combustion gas generated by the combustion of a burner to be maximally returned to a heating medium, the heat exchanger being provided with a heat exchange unit having heating medium flow channels through which a heating medium flows and combustion gas flow channels through which combustion gas combusted in the burner flows to be alternately formed and adjacent to each other in spaces between a plurality of plates, wherein the heat exchange unit comprises: a sensible heat unit which surrounds the outer side of a combustion chamber, is formed of one side area of the plates, and heats the heating medium by using sensible heat of combustion gas generated by the combustion of the burner; and a latent heat unit which is formed of the other side area of the plates, and heats the heating medium by using latent heat of water vapor included in combustion gas that has finished undergoing heat exchange in the sensible heat unit, wherein a flow channel cap is coupled to the rear of the sensible heat unit so as to provide a flow channel for combustion gas in order to enable combustion gas that passed through the combustion gas flow channels formed on the upper part of the sensible heat unit to enter into the combustion gas flow channels of the latent heat unit.

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First Claim