Whirlwind type multi-layer air inlet hood installed inside biomass combustion furnace

Abstract

The invention discloses a whirlwind type multi-layer air inlet hood installed inside a biomass combustion furnace. The whirlwind type multi-layer air inlet hood comprises surface hoods and whirlwind blades, and is characterized in that the multi-layer air inlet hood consists of two or more surface hoods; a fire hole is formed in the center of the surface hoods; and the whirlwind blades are uniformly installed at an inner wall of the surface hoods. The whirlwind blades are linear-shaped or arc-shaped and are uniformly distributed with the fire hole in an oblique incidence manner; the whirlwind blades are installed in a certain angle with the inner walls of the surface hoods; and a plurality of surface hoods are overlapped so as to form a multi-layer air inlet. The whirlwind type multi-layer air inlet hood is simple in structure, scientific in air inlet mode and excellent in energy concentration effect, pyrolysis and combustion of tar and steam are prompted, the heat efficiency is improved, the energy consumption of the biomass energy is reduced, and the carbon discharge is reduced. The whirlwind type multi-layer air inlet hood is applicable to a biomass combustion stove.

Description

technical field [0001] The invention relates to a device in a biomass combustion furnace, in particular to a cyclone-type multi-layer air intake hood installed in a biomass combustion furnace which not only lights up and gathers energy, but also cracks and burns tar and water vapor. Background technique [0002] At present, the combustion effect of all biomass direct-fired stoves used is not ideal, and there are defects such as incomplete combustion, excessive smoke and dust, no energy gathering, and no energy saving. Therefore, the popularization rate in rural areas is not high. The main reason is that the two problems of air intake and energy gathering have not been solved. It is undeniable that the use of the secondary air intake device has a good effect on biomass combustion, but the lack of energy gathering is still exposed during use, and the firepower is not strong. The biomass direct-fired furnace that performs secondary air distribution through the fan forceful...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the two major problems of air intake and energy gathering, the present invention provides a cyclone-type multi-layer air intake hood installed in a biomass combustion furnace that not only lights up and gathers energy, but also cracks and burns tar and water vapor. The cyclone-type multi-layer air intake hood adopts multi-layer masks overlapping, no fan is needed, and the air is self-inhaled. The inner wall of the mask is equipped with cyclone blades, so that the air enters the fire hole to generate a rotating airflow. Aggregate to form a larger high-temperature zone, and the tar and water vapor coming out of the fire hole are cracked and burned at high temperature, generating huge heat and improving thermal efficiency, which better solves the problem of incomplete combustion of biomass stoves. The problem of low thermal efficiency due to non-concentrated firepower

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