Return air gasifier for charging air from bottom

Abstract

The invention discloses a return air gasifier for charging air from the bottom and relates to a civil stove. An air inlet channel is arranged on the top of a hearth, one end of a secondary air inlet pipe is communicated with the air inlet channel, and an opening at the other end is arranged in a base. The opening is provided with a secondary air inlet door, and an opening at the lower end of the hearth is provided with a main air door. The secondary air inlet door is linked with the main air door, namely when the main air door is opened, the secondary air inlet door is closed, and when the secondary air inlet door is opened, the main air door is closed. A return air stove state and a gasifier state can be conveniently switched, thus the invention has the advantages of large firepower of the return air stove and high utilization rate of the gasifier. The secondary air inlet door arranged at the bottom is convenient to open and close and cannot influence the appearance of the stove, the smoke discharge of a flue and the diameter of the hearth, thus ventilation in the hearth is smooth. The invention also has the advantages of fuel saving, high burning efficiency, large firepower and good heating effect.

Description

technical field [0001] The invention relates to a civil stove, in particular to a return air gasification furnace with bottom air intake. Background technique [0002] The stoves currently in use generally use a single-layer or double-layer furnace. The flue exhaust of the single-layer furnace is ideally arranged, and the long-distance flue of the loop can make better use of the heat of the fuel. However, the fuel is not fully burned in the furnace, and the carbon monoxide and hydrogen generated during the period are discharged from the flue along with the smoke; the double-layer furnace is equipped with air holes, and the air can enter the furnace from the cracks of the double-layer furnace to participate in the combustion, so that the fuel is not fully burned. The carbon monoxide and hydrogen generated during combustion are used for secondary combustion, so that the utilization rate of fuel is higher, but the setting of this kind of exhaust duct is more complicated, which ...

AI Technical Summary

Problems solved by technology

However, the fuel is not fully burned in the furnace, and the carbon monoxide and hydrogen generated during the period are discharged from the flue along with the smoke; the double-layer furnace is equipped with air holes, and the air can enter the furnace from the cracks of the double-layer furnace to participate in the combustion, so that the fuel is not fully burned. The carbon monoxide and hydrogen generated during combustion are used for secondary combustion, so that the utilization rate of fuel is higher, but the setting of this kind of exhaust duct is more complicated, which wastes raw materials, and the secondary air intake channel easily interferes with the exhaust duct, reducing the The use of heat by the flue; because of the existence of the double-layer furnace, the diameter of the main air intake channel will be correspondingly reduced for the same size furnace body, and the ashes after fuel combustion are easy to accumulate on the furnace bridge, blocking the air intake channel and reducing combustion. efficiency

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