Volume type gas water heater

Abstract

The invention discloses a volume type gas water heater, which comprises an inner liner, at least one heat exchange flue, a combustion device and a reverse current cover, wherein the at least one heat exchange flue passes through the inner liner, the combustion device is used for heating the inner liner, the reverse current cover is arranged on the periphery of the inner liner, a heat exchange cavity is formed between the inner wall of the reverse current cover and the outer wall of the inner liner, the tail end of the heat exchange cavity is provided with a smoke gas suction device used for sucking smoke gas, and the smoke gas suction device is communicated with the heat exchange cavity. Compared with the prior art, the volume type gas water heater disclosed by the invention has the advantages that the smoke gas in the water heater can be exhausted in a forced way through the suction effect, and the smooth flowing of the smoke gas is ensured, so the fuel is sufficiently combusted, and the water heater is enabled to be normally used.

Description

technical field [0001] The invention relates to the technical field of water heaters, and more specifically, to a volumetric gas water heater. Background technique [0002] The existing volumetric gas water heater is equipped with an inner tank, which is filled with hot water heated once. At the same time, the inner tank is also provided with a heat exchange flue. The high-temperature flue gas generated by the combustion device passes through the heat exchange flue and The hot water in the inner tank undergoes secondary heat exchange, and the flue gas after heat exchange is reversely discharged through the heat exchange chamber on the outer wall of the inner tank, and undergoes three heat exchanges with the hot water in the inner tank during the reverse discharge process. [0003] However, the existing volumetric gas water heaters are usually low-power water heaters, the combustion power of the combustion device is relatively small, and the space required for flue gas flow i...

AI Technical Summary

Problems solved by technology

[0003] However, the existing volumetric gas water heaters are usually low-power water heaters, the combustion power of the combustion device is relatively small, and the space required for flue gas flow is also small

When increasing the power of the water heater, if the combustion power of the combustion device is increased, the smoke generated by the combustion will also increase, which will easily flow poorly, resulting in insufficient combustion or even extinguished combustion, making the water heater unable to be used normally

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