盘管换热商用燃气热水器

Coil heat exchange commercial gas water heater

Abstract

The utility model relates to a coil heat exchange commercial gas heater and belongs to the technical field of water heaters. The water heater comprises a cylindrical water storage casing; a vertical combustion chamber straight tube is arranged at the center of the water storage casing; a combustor is mounted at the upper end of the combustion chamber straight tube, and the lower end of the combustion chamber straight tube is communicated with one end of a helical heat exchange coil surrounding the straight tube; the other end of the heat exchange coil is communicated with an external fume exhaust pipeline; and the combustion chamber straight tube is connected with one end of the heat exchange coil through a reducing pipe. Therefore, when fume passes through, the flow speed, the flow capacity and the flow direction are gradually changed along the diameter of the tube, and partial pressure is reduced, so that the massive concentration of the heat of the fume is avoided, the damage caused by excessive concentration of the fume is further prevented, and the service life of the heat exchange coil is effectively prolonged.
本实用新型涉及一种盘管换热商用燃气热水器,属于热水器技术领域。该热水器包括圆柱形的储水壳体,储水壳体的中心安置垂直的燃烧室直管;燃烧室直管的上端装有燃烧器,下端与环绕该直管的螺旋状换热盘管一端连通;换热盘管的另一端与外部排烟管道连通;燃烧室直管通过渐缩管与换热盘管的一端连接。这样,烟气在流经该处时,流速、流量、流向均沿着管径逐渐变化,局部压力得到降低,从而避免了烟气热量在该处大量集中,进而防止了因热量过于集中导致的损坏,有效延长了换热盘管的使用寿命。

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    CN-103822349-AMay 28, 2014A.O.史密斯公司Water heater and pressure probe for a water heater
    CN-103868228-AJune 18, 2014艾欧史密斯(中国)热水器有限公司Volumetric gas water heater
    CN-103868228-BApril 12, 2017艾欧史密斯(中国)热水器有限公司容积式燃气热水器