Gas-fired water heating boiler

Abstract

The invention relates to a fuel gas water heating boiler, which comprises a boiler case, an internal furnace, a smoke tube and a ventilating device. Wherein, the internal furnace is filled by water; the smoke tube is through the internal furnace whose open has a flame injector and connected to the interlayer between the internal furnace and the case; the upper end of said interlayer has a open of smoke channel; the flame injector has wind inlet; the open of said smoke channel has a ventilating device; and the smoke tube is a corrugated tube. The invention has high efficiency which can reach 97% and increase the water temperature to preset one in short time. The invention can save energy while the consumed fuel is one third of similar product, and it can protect environment without discharging innocent smoke. It can operate without pressure to replace the coal boiler which is less than 1t.

Description

1. Technical field [0001] The invention belongs to the technical field of boiler manufacturing, and in particular relates to a gas-fired hot water boiler. 2. Background technology [0002] Most of the existing gas-fired boilers spray gas into the combustion chamber, and the water in the boiler furnace or jacket is heated for use by gas combustion. The disadvantage of these gas furnaces is that they do not burn well and are not thermally efficient. At present, the more advanced boiler is a condensing boiler. Its working process is that the flame directly hits the furnace cavity, the high-temperature flue gas is deflected back in the furnace, and the heat is exchanged at the exhaust port by a condensing heat exchanger, so that To achieve the purpose of higher utilization of heat energy. Because the flame of this kind of boiler is directly sprayed into the furnace cavity, there is no resistance, and the unburned gas is also discharged out of the furnace along with the flue ga...

AI Technical Summary

Problems solved by technology

Because the flame of this kind of boiler is directly sprayed into the furnace cavity, there is no resistance, and the unburned gas is discharged out of the furnace along with the flue gas, resulting in insufficient combustion, low thermal efficiency and high fuel consumption.

This kind of boiler is equipped with a condensing heat exchanger at the exhaust port, and uses high-temperature flue gas to heat the water in the heat exchanger, which requires the temperature of the high-temperature flue gas passing through the exhaust port to be very high, thereby reducing the The utilization rate of high-temperature flue gas in the boiler, and the installation of heat exchangers will correspondingly increase the manufacturing cost and process difficulty, and also increase the cost of consumers

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