CN2341077Y

CN2341077Y - Air heating furnace using gas fuel

Info

Publication number: CN2341077Y
Application number: CN 98222433
Authority: CN
Inventors: 王兴道
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-18
Filing date: 1998-09-18
Publication date: 1999-09-29
Anticipated expiration: 2008-09-18

Abstract

The utility model relates to a gas hot air furnace, comprising a furnace body, and a furnace hearth. The utility model is characterized in that the interior of a hollow cavity between the upper cover plate and the lower cover plate of the furnace body is vertically provided with circular pipes; the circular pipes are communicated with the furnace hearth and a smoke exhaust cavity; the hollow cavity between the circular pipes of the interior of the furnace body is an air heating cavity; a cold air inlet is arranged on the upper part of the side of the furnace body; a hot air outlet is arranged on the low part of the side of the furnace body; a smoke exhaust opening is arranged on the top of the furnace body. The utility model has the advantages that the interior of the furnace body is uniformly distributed with steel pipes which are in vertical arrangement; the gas flame upwards combusts along each steel pipe; the flame is uniformly distributed; the circular pipe is equally heated; the air heating cavity of the exterior of the steel pipe is smoothly and stably heated; the hot air temperature is equal, and is easy for regulating and controlling; the baking effect is better.

Description

Fuel gas hot-blast stove

The utility model is used to the chicken farm, the fuel gas hot-blast stove that occasions such as used for drying corps are used.

At present, some chicken farm, rural area, hot house need heat, also have grain heat-drying, flue-cured tobacco oven dry etc., all need to toast with hot-blast stove.And existing hot-blast stove generally to adopt coal, heavy oil be fuel, produce hot blast.Though they extensive use but still exist some defective for many years; 1, the air heat chamber in the hot-blast stove is a big cavity, and be heated upwards heat transfer, convection current and the width of cloth of furnace bottom penetrated, because heating surface only is the furnace bottom face, thereby whole air heat chamber is subjected to thermoae inhomogeneous, the difficult control of hot blast temperature, fluctuated, make the product that is toasted sometimes by adustion; Sometimes do not reach the desired effect of baking, cause unnecessary loss for peasant brother; 2, because the auxiliary device configuration is many, complete equipment price height, peasant brother dimension bears; 3, adopting coal, heavy oil is that fuel, power consumption are big, and the thermal efficiency is low and waste energy contaminated environment.

The purpose of this utility model is in order to solve the problem of above-mentioned existence, a kind of fuel gas hot-blast stove to be provided.It can realize following purpose: 1, the hot blast temperature of Chan Shenging is even, is easy to control; 2, reduce the cost and price of this equipment; 3, save the energy, reduce and pollute.

In order to achieve the above object, the utility model comprises body of heater, burner hearth, be provided with gas-cooker in the burner hearth, body of heater is provided with the cold wind import, hot-blast outlet and exhaust opening is characterized in that vertical array has pipe in the cavity between the upper and lower cover plate of body of heater, and this pipe is communicated with burner hearth and smoke extraction chamber, cavity between the pipe in body of heater is the air heat chamber, and the cold wind import is located at body of heater side top; Hot-blast outlet is located at the body of heater side-lower; Exhaust opening is located at the body of heater top.

The utlity model has following advantage and good effect: 1, be evenly equipped with vertically disposed steel pipe in the body of heater, gas flame is along the upwards burning of each steel pipe, flame distribution is even, the pipe approximate equality of being heated, it is steadily stable that the outer air heat chamber of steel pipe is heated, so, the hot blast temperature equilibrium, and be easy to regulate control.Cured effect is good; 2, the cold wind import is above the body of heater side, and hot-blast outlet is below body of heater, and cold wind flow process from top to bottom is heated gradually, and the heating route is long, and thermal loss is little; 3, save air and supplied with special equipment, reduced the cost and price of complete equipment; 4, adopting stalk coal gas or biogas is heating source, thus can utilize the rural area in large quantities stalk (as maize straw, wheat straw stalk etc.) be raw material, turn waste into wealth, not only saved the energy but also reduce pollution, achieve many things at one stroke.

Fig. 1 is the utility model cutaway view;

Fig. 2 is the A-A cutaway view among Fig. 1;

Fig. 3 is the B-B cutaway view among Fig. 1.

1, body of heater; 2, burner hearth; 3, gas-cooker: 4, cold wind import; 5, hot-blast outlet; 6, exhaust opening; 7, upper cover plate; 8, lower cover; 9, pipe; 10, smoke extraction chamber; 11, air heat chamber; 12, air valve.

Referring to Fig. 1, Fig. 2, Fig. 3, body of heater 1 adopts A3 steel, wall thickness δ=3mm.Body of heater 1 internal diameter is Φ 580mm.Burner hearth 2 is provided with 4 gas-cookers 3 in body of heater 1 bottom in it, gas-cooker 3 connects combustion gas (coal gas of producing as stalk or biogas etc.) pipeline, and flame size can be by air valve 12 controls.Vertical uniform arrangement cylindrical steel tube 9 between the body of heater 1 upper and lower cover plate 7,8, caliber is Φ 20 * 37.So just form smoke discharging in the pipe, pipe is outer to be air heat chamber 11.Flue gas and air heat are isolated mutually.Exhaust opening 6 is located at body of heater 1 top, and cold wind import 4 is located at body of heater side top; Hot-blast outlet 5 is located at body of heater 1 side-lower.Heated like this cold air is heated gradually by flowing under last, and is effective.

When the baking of grain heat-drying, tobacco, Chinese medicine processing and greenhouse gardening, often need to adopt hot blast to toast or heating.During use, combustion gas is burnt heat along upwards burning of pipe 9 with pipe 9, and air heat chamber 11 temperature in the body of heater 1 raise rapidly.Cold air enters in the air heat chamber 11 from cold wind import 4 and is heated gradually, and hot-blast outlet 5 outer ends are connected to induced-draught fan, thereby hot blast is delivered to bakery from hot-blast outlet 5 continuously.

Claims

1, a kind of fuel gas hot-blast stove, it comprises body of heater (1), burner hearth (2), be provided with gas-cooker (3) in the burner hearth (2), body of heater (1) is provided with cold wind import (4), hot-blast outlet (5) and exhaust opening (6), it is characterized in that vertical array has pipe (9) in the cavity between the upper and lower cover plate of body of heater (1) (7), (8), this pipe (9) is communicated with burner hearth (2) and smoke extraction chamber (10), cavity between the pipe (9) in body of heater (1) is air heat chamber (11), and cold wind import (4) is located at body of heater (1) side top; Hot-blast outlet (5) is located at body of heater (1) side-lower; Exhaust opening (6) is located at body of heater (1) top.