Condensing type gas water heater

Abstract

The invention discloses a condensing gas water heater, including a shell, control keys and a display; wherein, the shell is internally provided with a cylindrical mesh burner, a double-layered stainless steel corrugated tube heat exchanger, a high air-pressure vortex enclosed blower and a controller. The upper part of the shell is provided with a community balance flue exhaust pipe; the shell is internally provided with an abnormal flame combustion inductive needle and a dual-purpose device for draining condensed water; the CPU of the controller is internally provided with current parameters of flame ions, a sensor used for measuring the water flow, a sensor for measuring the temperature of exhaust smoke, a sensor for measuring the temperature of hot water drained, and an igniter which are respectively and electrically connected with the controller; the controller is also connected with an air ratio valve and the display. The water heater of the invention is efficient in heat exchange, low in exhaust emission, easy for manufacturing and low in cost. When the hot water is set at the temperature of 50 DEG, the temperature of the exhaust discharged out of the flue is lower than that of the hot water, thus generating condensed water; the water heater can be automatically shutdown when the gas is not fully burned, which ensures the gas to be burned fully, thus being environment-friendly and energy-saving.

Description

technical field [0001] The invention relates to a water heater, in particular to a condensing gas water heater with improved structure, higher thermal efficiency, more energy saving and environmental protection. Background technique [0002] At present, when the existing gas water heaters on the market are burning and running, the temperature of the shell and the surface of the smoke exhaust pipe is relatively high, generally between 150°C and 250°C, so that the smoke exhaust pipe needs to be made of high-temperature resistant metal materials. Most of the pipes are usually made of stainless steel, which means that part of the heat generated by the combustion of gas is absorbed and dissipated by the shell of the water heater and the exhaust pipe. [0003] The heat exchanger of the existing gas water heater is generally made of circular copper tubes and metal sheets. The heat exchanger is installed above the burner. Small, the heat exchange efficiency is not high enough, the ...

AI Technical Summary

Problems solved by technology

[0003] The heat exchanger of the existing gas water heater is generally made of circular copper tubes and metal sheets. The heat exchanger is installed above the burner. Small, the heat exchange efficiency is not high enough, the heat loss is more, the heat generated by the combustion of gas is not fully absorbed, and about 10% to 30% of the heat is emitted into the atmosphere, which not only wastes energy, causes atmospheric environmental pollution, but also large economic losses

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