Conical air supply combustion device with large regulating ratio

Abstract

The invention discloses a conical air supply combustion device with a large regulating ratio. The conical air supply combustion device with the large regulating ratio comprises an air regulating baffle, an air bellows, a conical diffusion disc, a flame tube, an ignition electrode, a gas nozzle and a flame detecting bar. The air regulating baffle is hinged to an air inlet of the air bellows, the gas nozzle is installed at the front end inside the air bellows, and the conical diffusion disc is installed at the rear end inside the air bellows and connected with the gas nozzle. The flame detecting bar penetrates through the whole gas nozzle, one end of the flame tube is inserted into the air bellows and overlaps part of the conical diffusion disc, and the ignition electrode is installed at the lower end of the air bellows. According to the device, the air regulating baffle, the gas nozzle and the conical diffusion disc are matched, an air duct distributed in a trapezoid shape is arranged in the conical diffusion disc, and thus sufficient mixing combustion of fuel and combustion air can be guaranteed, it can also be guaranteed that the regulating ratio of the device reaches 40:1, and the use requirements of production equipment are met. The device is further provided with the flame detecting bar, whether flames exist or not can be judged, and safe use of the combustion device is guaranteed.

Description

technical field [0001] The invention relates to a burner device, in particular to a conical air supply combustion device with a large adjustment ratio. Background technique [0002] In industrial production, the load of the production line may change continuously according to the actual demand. In some occasions that rely on thermal energy for heating and baking, it is required that the adjustment and change of the heating equipment can meet the change of the production load. At the same time, in order to maximize energy saving, users do not want the equipment to start and stop frequently. In this way, the requirements for the combustion device as an energy conversion device are greatly increased. The most effective way to cope with large changes in demand and reduce start and stop is to increase the turndown ratio of the combustion plant. [0003] The traditional combustion device, due to the problem of the gas / air adjustment ratio, can meet the requirements at full load,...

AI Technical Summary

Problems solved by technology

[0003] The traditional combustion device, due to the problem of the gas / air adjustment ratio, can meet the requirements at full load, but when the gas flow rate is too small, due to structural reasons, the combustion air is small enough, and the flow rate is too small, which will cause incombustibility. completely

If the combustion air is too large, it will cause the flame to be blown out by the wind

Therefore, the general adjustment ratio of conventional combustion devices is only about 10:1, which cannot meet the needs of production equipment.

Images