Water-cooled combustor and condensing boiler

Abstract

The invention provides a water-cooled combustor and a condensing boiler. The water-cooled combustor comprises a tubular body and fluid boxes connected to the two ends of the tubular body, wherein thetubular body comprises an inner barrel and a plurality of outer pipes, the inner barrel extends along the central axis and is provided with a mixing cavity, a plurality of rows of open holes are formed in the inner barrel, the multiple outer pipes are arranged in parallel around the outer side of the inner barrel, the length directions of the multiple outer pipes are consistent with the directionof the central axis of the inner barrel, each fluid box is provided with a fluid inlet and a fluid outlet, and the fluid inlets and the fluid outlets are correspondingly communicated with the multipleouter pipes. The combustor is not prone to blockage, and good in heat exchange effect, and can reduce the content of nitric oxide in flue gas.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular to a water-cooled burner and a condensing boiler. Background technique [0002] Condensing boilers have the characteristics of high efficiency, energy saving and environmental protection, and are the development direction of the boiler industry. At present, the technology of small condensing boilers or gas condensing water heaters has gradually matured. [0003] The burner needs a lot of air when burning, and the air contains a lot of impurities. The existing condensing boilers mostly use surface-type metal fiber mesh structure burners, and the surface is mesh-shaped. The existing surface-type burners pass through the metal mesh wound on the surface. It can filter the air entering the burner, can make the mixed gas evenly distributed, and has a certain anti-backfire function, but the existing burner is easy to cause the surface of the burner to be blocked, which needs to be replaced...

AI Technical Summary

Problems solved by technology

[0003] The burner needs a lot of air when burning, and the air contains a lot of impurities. The existing condensing boilers mostly use surface-type metal fiber mesh structure burners, and the surface is mesh-shaped. The existing surface-type burners pass through the metal mesh wound on the surface. It can filter the air entering the burner, can make the mixed gas evenly distributed, and has a certain anti-backfire function, but the existing burner is easy to cause the surface of the burner to be blocked, which needs to be replaced and cleaned frequently, which is time-consuming and laborious, and once blocked In the end, the output of the boiler will be greatly reduced, and it is easy to cause damage to the burner. In severe cases, it may even lead to safety hazards such as deflagration.

Images