Latent heat exchanger in condensing boiler

Abstract

The present invention aims to provide a latent heat exchanger in a condensing boiler, which has no limit in the usage of a burner, comprises an upward combustion condensing boiler with a simple installation structure, reduces the exhaust resistance of a combustion product, and allows seamless discharging of condensed water generated from the latent heat exchanger so as to enhance the efficiency of latent heat recovery. To this end, the condensing boiler of the present invention comprises: a sensible heat exchanger for absorbing combusted sensible heat from the burner; the latent heat exchanger for absorbing the latent heat in water vapors in the combustion product that has been heat-exchanged in the sensible heat exchanger; an exhaust hood for discharging the combustion product that has passed through the latent heat exchanger; and a condensed water outlet port for discharging the condensed water generated from the latent heat exchanger, wherein the combustion product combusted in the burner is passed through the sensible heat exchanger, perpendicularly raised to the latent heat exchanger, descended in a slanted manner on the outer side, creating an acute angle with a horizontal surface, for heat-exchanging in the latent heat exchanger, and then perpendicularly raised and discharged from the exhaust hood.

Description

technical field [0001] The present invention relates to a latent heat heat exchanger for a condensing boiler, in particular to a latent heat heat exchanger that reduces the exhaust impedance of combustion products and smoothly discharges latent heat by aligning the exhaust direction of combustion products with the discharge direction of condensed water. The condensed water generated in the heat exchanger is combined with the latent heat heat exchanger of the condensing boiler with a simple structure inside. Background technique [0002] A boiler is a device that heats a heat medium in a closed container through a heat source to heat a desired area. It is composed of a burner for burning fuel and a heat exchanger for transferring heat from the burned high-temperature combustion air to heating water. [0003] The heat exchanger of the initial boiler only used the sensible heat generated by the burner, and the high-temperature combustion air was directly discharged through the ...

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Problems solved by technology

[0023] In contrast, the Bunsen burner is a burner that supplies the primary air required for combustion at the nozzle part where the gas is injected, and supplies excess secondary air at the part where the flame is formed to achieve complete combustion. The flame length that reacts with the secondary air is long and The flame density is low, so the flame has a tendency to face upwards, so there is a disadvantage that it can only be applied to the upward burning type

[0024] Therefore, when using an existing down-firing condensing boiler, it is necessary to use a premixed burner capable of down-firing, but the premixed burner suffers from reduced combustion stability, and in order to achieve very complicated combustion control Problems with using expensive control systems

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