A CONDENSING HEAT EXCHANGER AND A BOILER WITH THE CONDENSING HEAT EXCHANGER

摘要

The present invention relates to a condensing heat exchanger and a boiler including the same. The condensing heat exchanger comprises: a body formed in the shape a hollow sealed barrel; a combustion chamber provided in the body and having a plurality of through holes to emit combustion gas; an exhaust pipe having one end coupled to the through holes of the combustion chamber, and the other end coupled to the body; a used water inlet port provided on one side of the body to allow used water to be flowed into; and a used water outlet port provided on the other side of the body to allow used water heated inside the body to be discharged. Thus, the heat exchange efficiency of the heat exchanger can be improved and a high-efficiency tubular heat exchanger can be manufactured without an additional increase of volume, by widening a contact area of high-temperature combustion gas generated in the combustion chamber by using a plurality of exhaust pipes and a two path method. In addition, a loss of pressure of used water can be reduced by shortening a path between the inlet port and the outlet port. The efficiency reduction of the heat exchanger can be also minimized by matching a falling direction of condensate water and a progressing direction of combustion gas even when the condensate water is generated on the exhaust pipes. Furthermore, the flow of used water can be made smooth by fixing the positions of the exhaust pipes by using a first fixing member and a second fixing member, and the heat exchange efficiency of the heat exchanger can be improved by widening a heat exchange area through the first and second fixing members.