Three-section heat exchange type warm air furnace

Abstract

The invention relates to heat supply equipment, in particular to a three-section heat exchange type warm air furnace. The three-section heat exchange type warm air furnace comprises a fire bar, a hearth, a fire throat, a heat exchanger, a warm air chamber and a shell, wherein the heat exchanger is an inner / outer two-layer cylinder structure; a cold air inlet is formed in an outer cylinder of the heat exchanger; one side of the outer cylinder of the heat exchanger is shorter than the other side; the short inner side position of the outer cylinder of the heat exchanger is in closed connection with a furnace stage board; a sandwich layer between the inner cylinder and the outer cylinder of the heat exchanger is communicated with an upper hearth sandwich layer through the blockage of a spacing plate; the upper hearth sandwich layer and a lower hearth sandwich layer are communicated at the front end of the hearth; side stand plates are respectively and symmetrically arranged below sandwich layers at the two sides of a lower hearth; the lower hearth sandwich layer is divided into a transition chamber and a buffer chamber by the side stand plates; the fire bar is a hollow fire bar; and two ports of the fire bar are respectively communicated with the transition chamber and the buffer chamber. The three-section heat exchange type warm air furnace has the advantages of simple structure, high heat exchange efficiency, sufficient fuel combustion, low smoke discharge, energy conservation and environmental protection.

Description

Technical field [0001] The invention relates to a heating equipment, in particular to a three-stage heat exchange type energy-saving heater. Background technique [0002] The heater is a professional heating equipment that uses hot air as a medium and carrier, which can greatly improve the heat utilization rate and heat work effect. The structure of the heater is a combination of a combustion furnace and a heat exchanger, which can burn coal and other fuels. The heater has the characteristics of simple operation, good heating effect, high safety factor, etc., and it is widely used in the field of space heating or air heating by all walks of life. However, due to the structural design of the existing heating stove, it still has the following technical problems: the surface temperature of the furnace body is high, even reaching the level of red heat, dissipating a large amount of heat, causing a large amount of heat loss; cold air and the heating surface inside the furnace The c...

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Problems solved by technology

However, due to the design of the structure of the existing air heater, it also has the following technical problems: the surface temperature of the furnace body is high, even reaching the degree of red heat, which emits a large amount of heat, causing a large amount of heat loss; the cold air and the heating surface inside the furnace The contact time is short, the area is small, the heat exchange is insufficient, and the heat utilization efficiency is low; when the furnace is pressed at night (slow combustion), the heat generated by the burning fuel near the furnace bar at the bottom of the furnace cannot be used, resulting in low heat utilization efficiency ; The tar and carbon deposits on the inner wall of the heat exchanger and on the surface of the heat exchange tube cannot be removed; the existing heater can only be used for heating only, and has no cooking function

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