CN2198524Y

CN2198524Y - Coal Burning stove

Info

Publication number: CN2198524Y
Application number: CN 94228599
Authority: CN
Inventors: 唐功成; 李永林; 王宝富; 李晓华
Original assignee: DALIAN ENVIRONMENTAL EQUIPMENT ENGINEERING Co
Current assignee: DALIAN ENVIRONMENTAL EQUIPMENT ENGINEERING Co
Priority date: 1994-05-08
Filing date: 1994-05-08
Publication date: 1995-05-24
Anticipated expiration: 2004-05-08

Abstract

The utility model relates to a combustion furnace combusting solid fuels such as coal, etc. The utility model is composed of a furnace shell, a furnace body, a fire grate, a furnace base, a matched blower fan, etc. A spiral wind-guiding groove is arranged on the external wall of the furnace body, a plurality of air nozzles penetrating a furnace wall are arranged in the spiral wind-guiding groove, and air come from the blower fan is sent to a fuel bed and a furnace cavity by the air nozzles to make fuels sufficiently combust to obtain high temperature flame. The blackness of the exhaust fume of exhaust gas can conform to the environment protecting requirements, fuel utilization is high, and even if black ore with low thermal value can also be combusted and used. The utility model can be used on kitchen ranges and vertical boilers.

Description

Coal Burning stove

The utility model is a kind of burner of using for solid fuel such as burning coal, can be used for cooking stove and vertical boiler.

Existing this type of coal furnace, the combustion air that is blasted by blower fan is to carry out combustion reaction by fuel bed and fuel that the fire grate bottom is passed on the fire grate, the supply of its air is random: promptly thicker or hard grade of fuel bed located the resistance larger part, air is difficult to pass, to burn bad herein, even only smolder and do not burn, and the resistance smaller part, air is concentrated away short circuit, take up thinner coal powder simultaneously, therefore, whole fuel bed burning is inhomogeneous, the igniting or banking fire again the blow-on time long, particularly in this type of stove, flue gas (CO that includes the coal fine silt and produce when imperfect combustion, in the coal fugitive constituent etc.) holdup time in burner hearth is short, and be difficult to fully mix the formation vortex combustion with air, therefore, a large amount of still imperfect combustion inflammable substances can enter atmosphere with waste gas, and not only coal utilization rate is low, and flame temperature does not increase yet and causes the heat supply situation poor, but also because of the oke exhaust blackness height, the many and atmosphere pollution of oxious component.

The purpose of this utility model provides a kind of coal burning stove fast, that burning is complete, flame temperature is high of lighting a fire.

Structure of the present utility model comprises the blower fan of furnace shell, body of heater, fire grate (promptly unloading slag chute), stove seat and adapted, it is characterized in that between furnace shell and the body of heater, body of heater around be wound with upper end closed on the sidewall, be terminated at the spirality wind guide tank of blower fan outlet down, this wind guide tank has again in wind-guiding and gives hot-air and heat insulation effect: in this wind guide tank, the wind that evenly has the straight-flow furnace body wall along furnace body wall is chewed, its percent opening (with respect to the furnace wall area) is 0.5-1.5%, and wind is chewed and exported and horizontal angle=10-60 °.

The wind of offering in wind guide tank is chewed and be can be slot, the long limit of its vertical wind guide tank center line can be 1:2 with the length ratio of broadside, percent opening can be 0.8-1.0%, like this, to entering the even distribution of the air stream in the burner hearth, to the suppression of upper punch flue gas, flame, to prolong its holdup time in burner hearth more favourable.

The utility model compared with prior art has following advantage:

1, igniting fast: during to the stove of banking fire blow-on again, generally only needed 1-2 minute can change the normal combustion state over to.

2, burning fully, fully: its oke exhaust blackness (Lin Gemantu) is 0 grade, and flame temperature can be up to 1650 ℃.

3, coal utilization rate height: slag is canescence, and it is assorted to can not see the flammable coal tong of black in the slag.

4, available coal is wide; Even the gangue that calorific value is low also can burn usefulness.

The drawing of accompanying drawing is described as follows:

Fig. 1 structural representation of the present utility model

Fig. 2 body of heater front view

Fig. 3 B-B cutaway view Amplified image

Further specify structure of the present utility model and use below in conjunction with accompanying drawing:

Fig. 1, stove shown in Fig. 2, its body of heater 1 is bearing on the stove seat 9, be garden shape, furnace shell 2 is arranged outside it, overall dimensions are 576 * 300 millimeters of ∮, body of heater mouth 7 is flange and closes up, can improve the burner hearth heat-radiating properties, four circle spirality wind guide tanks 3 are arranged on the furnace body outer wall, the wind that has 10 long * wide=5 * 10 millimeter on every circle wind guide tank chews 6, bunker coal is added by body of heater mouth 7, slag uses drawing and pulling type fire grate 5 through slide rail 4 intermittent discharges, the cold air of being sent here by blower fan during use is chewed by lower furnace body wall windward through air inlet 8 parts and is sprayed into the bunker coal of being pushed down fire, it is blown combustion, form flame, meanwhile, in addition the part air in wind guide tank, given by the body of heater conduction heat transfer heat become hot blast (its temperature enters the normal combustion state with stove and increases) by in, wind on the furnace body wall of top is chewed and is sprayed in the burner hearth, it is combustion-supporting on the one hand flame to be carried out secondary, then to suppress the flame upper punch on the other hand, force flame in burner hearth, to carry out vortex combustion, therefore, can make air and flue gas, flame is fully mixed and can be prolonged their burning holdup times in stove, make sufficient combustion, thereby obtain thermal-flame, being equipped with 200W blower fan burning Lower heat value with this stove is 15.8MJ/kg, ash 28%, the bituminous coal of fugitive constituent 32% (including gangue), boiled 50kg water, 6 minutes consuming time, 0 grade of oke exhaust blackness, waste residue is canescence, waste gas, waste residue all meets the environment protection emission requirement.

Claims

1, a kind of coal furnace, the blower fan that comprises furnace shell, body of heater, fire grate, stove seat and adapted, feature of the present utility model is between furnace shell and body of heater, be wound with the spirality wind guide tank of upper end closed around the body of heater on the sidewall, evenly having the wind that connects the furnace wall along furnace body wall in the groove chews, it exports and horizontal angle=10-60 °, and the percent opening that wind is chewed is 0.5-1.5%.

2, according to the described coal furnace of claim 1, it is characterized in that wind is chewed mouthful to be rectangle that its length-width ratio is 1:2, percent opening is 0.8-1.0%.