Composite combustion energy-saving furnace used for combusting patch fuels

Abstract

A composite combustion energy-saving furnace used for combusting patch fuels comprises a casing arranged with a thermal insulating layer, the thermal insulating layer surrounds to form a hearth inside, fuel bearing strips are arranged below the hearth, and the fuel can go through a primary combustion in the hearth. The thermal insulating layer is a composite thermal insulating layer with a sandwich layer. A tempering loop is arranged above an upper edge of the hearth, the tempering loop and the upper edge of the hearth match mutually in shape so as to form a circumferential gap used for forcing the fuel to combust in the hearth to generate smoke to flow along the gap in a zigzag manner. A plurality of combustion air outlets are arranged below the circumferential gap, and therefore, fuel particles carried with the smoke produced by the primary combustion can go through a secondary combustion at a circumferential gap position. Thermal insulating performance of the combustion furnace is improved, so that temperature of an outer wall of the furnace is greatly lowered, and risk of scalding a user is eliminated. The circumferential gap enables the fuel to combust more completely, and fuel availability is enhanced and pollutant emission level is lowered.

Description

Technical field: [0001] The present invention relates to a composite combustion energy-saving furnace for burning block fuels, which can be used as a heating stove in a country house (for example, it can heat water for heating) and / or a stove used by rural residents in their daily life , for example as a kitchen cooking stove. Background technique: [0002] Coal (lump coal, honeycomb coal, etc.) is usually used as the main fuel for rural room heating and stoves in the daily life of residents (such as many rural kitchens). In the hearth of these existing stoves, the structure of the hearth is very simple, so that the combustion of the fuel is all one-time combustion, and the combustion of this kind of one-time combustion is insufficient, resulting in a large waste of fuel and serious environmental pollution. especially air pollution. Although these existing stoves are usually provided with a single-layer heat-insulating shell made of refractory materials around the hearth, ...

AI Technical Summary

Problems solved by technology

In the hearth of these existing stoves, the structure of the hearth is very simple, so that the combustion of the fuel is all one-time combustion, and the combustion of this kind of one-time combustion is insufficient, resulting in a large waste of fuel and serious environmental pollution. especially air pollution

Although these existing stoves are usually provided with a single-layer heat-insulating shell made of refractory materials around the hearth, in use, this single-layer heat-insulated shell still radiates a large amount of heat to the surroundings. , when used in summer, the room temperature will be too high, and the temperature of the outer wall of the furnace is very high, which may cause burns to the user

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