Flue thermal-arrest energy-saving device of domestic gas water heater

Abstract

The invention relates to a flue thermal-arrest energy-saving device of a domestic gas water heater, comprising an outer shell. The flue thermal-arrest energy-saving device is characterized in that the bottom of the outer shell is provided with an intake pipe hole, an outlet pipe hole and a condensed water discharge outlet pipe, wherein the outer shell is internally provided with vertically and alternately arranged fins, water pipes, a left separator, a right separator and a condensing heat exchanger, the water pipes are respectively and transversally connected in series on the fins and are vertically and alternately arranged and distributed at corresponding holes; the left separator and the right separator with turned-over edges respectively extend out of the front ends and the rear ends of the corresponding holes at both ends of the water pipes on which the vertically and alternately arranged fins are uniformly distributed; the left separator and the right separator are respectively sleeved at both end parts of the water pipes extending out of the outer sides of the vertically and alternately arranged fins; the condensing heat exchanger comprises U-shaped elbows which are respectively communicated with the end parts of the water pipes extending out of the left separator and the right separator; the intake pipe hole is communicated with an intake hole pipe with a valve; the outlet pipe hole is communicated with an exhalent pipe; and the front end and the rear end of the outer shell are connected with a front cover with a flue gas inlet and a rear cover with a flue gas outlet. The invention is suitable for matched use by connecting with the domestic gas water heater.

Description

Technical field: [0001] The invention relates to a domestic gas water heater, in particular to a flue heat collection and energy saving device for a domestic gas water heater. Background technique: [0002] At present, most of the domestic gas water heaters sold in the domestic market will produce a large amount of high-temperature flue gas and discharge it directly to the outside during combustion. Generally, the temperature of the flue gas at the outlet of the exhaust pipe has been tested as high as 150-180 ° C, and some are even higher. . Take the 12L gas water heater used by a family of three as an example, due to the influence of the strong exhaust air in the gas water heater, about 15% of the heat energy is in the combustion chamber which is less than 50 cm long, and it is too late to heat the heating surface. In order to maintain the outlet water temperature of the gas water heater, each household needs to use about 6 cubic meters of gas (coal gas, natural gas, lique...

AI Technical Summary

Problems solved by technology

In addition, a large amount of acid waste gas and water vapor produced by combustion not only take away a large amount of heat energy, but also cause a waste of energy, and the discharge of a large amount of acid waste gas also causes great pollution to the surrounding environment

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