CN2287282Y

CN2287282Y - Flaming gas burner

Info

Publication number: CN2287282Y
Application number: CN 96242705
Authority: CN
Inventors: 冯伟; 杨子初; 张旭; 将克义
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-25
Filing date: 1996-12-25
Publication date: 1998-08-05
Anticipated expiration: 2006-12-25

Abstract

The utility model relates to a flaming gas burner. A gas nozzle is arranged at the bottom of a burner body; a fire suction hole and a smoke window are arranged on the top of the burner body; the flame is ejected from the nozzle and enters a hearth through a fire through channel between a lower partition board and a burner wall; after products are heated through cross current, the flame can be discharged from the fire suction hole and the smoke window through fire through holes on the four corners of an upper partition board. The utility model is characterized in that the utility model adopts a flaming structure to cause the temperature difference of the hearth to be extremely small; simultaneously, the firing of oxidative atmosphere or reducing atmosphere in the hearth is realized through adjusting and controlling the pressure of the gas nozzle and an inserted plate of the smoke window; the firing curve can be conveniently established. The utility model is suitable for being used as a high-temperature testing device for the industrial fields of ceramic, glass, cement, pigment, etc.

Description

Rise flame formula gas furnace

The utility model relates to a kind of Thermal Equipment, especially a kind of hot test kiln that is applied to field of inorganic nonmetallic material.

At present, what field of inorganic nonmetallic material test was both at home and abroad generally adopted with stove is to be the resistance furnace of heater element by Elema, Si-Mo rod etc., its structure be in the burner hearth both sides (perhaps around burner hearth) resistive element is set is heater, furnace heat transfer mainly is that radiant heat transfer, flame are short, therefore certainly will cause the interior temperature difference of burner hearth bigger, heating object can not thermally equivalent, is unfavorable for burning till of goods.Simultaneously, these type of furnaces must be prepared the regulating and controlling voltage device, and not only the aging easily loss of heater element is big, and the big cost height of power consumption, and firing time is longer.Most importantly these type of furnaces all are heating heating products in air; can only carry out burning till of oxidizing atmosphere; and can not carry out burning till of reducing atmosphere; though some resistance furnace is under the situation of a large amount of optional equipments; also can carry out burning till under the protection of neutral atmosphere or inert gas; but working space is littler like this, cost is higher, also can't change the intensity of pressure in the burner hearth simultaneously.Thereby the application of resistance furnace has significant limitation.

Another kind of batch (-type) Thermal Equipment, all be to adopt downward flame, promptly combustion chamber (or nozzle) is set in side wall of furnace, flame rises to furnace roof by the combustion chamber, take out down through the suction fire hole that is arranged on furnace bottom then, again through flue, smokestack is discharged, the temperature difference is less in the kiln like this, can control firing atmosphere, but this kiln generally needs bigger space, and it is exactly very difficult with uneconomic adopting design like this for the kiln that burns till the space below 1 cubic metre, more particularly aims at the trial furnace that test or small lot batch manufacture are used, adopt the trial furnace of this structure of downward flame to be difficult to realize, this just present trial furnace generally adopts the main cause of resistance furnace.Test now exists all with stove that the temperature difference is big, cost is high, firing time is longer in a word, and firing atmosphere such as is difficult to regulate and control easily at defective.

The purpose of this utility model provides a kind of delicate structure, easy and simple to handle, with oil liquefied gas, natural gas or light diesel fuel is fuel, adopt and rise flame formula structure, can carry out burning till of oxidizing atmosphere or reducing atmosphere easily, have a narrow range of temperature, serviceability temperature is regulated and control in 1650 ℃, the test gas furnace that firing time can arbitrarily be controlled.

For achieving the above object, gas furnace of the present utility model, adopt and rise flame formula structure, be about to nozzle and be arranged on furnace bottom, exhanst gas outlet is arranged on furnace roof, flame is walked from lower to upper, in the import of flame and the exit of flue gas one dividing plate is set respectively, and flame is sprayed by nozzle, space by lower clapboard both sides and furnace wall enters burner hearth, lower clapboard has played the muffle effect like this, does not cause to be heated goods bottoms and directly to be heated, and has also played the cross-flow effect simultaneously, make flame cross-flow heating product in burner hearth, extract out through the through hole of four jiaos of upper spacers then, upper spacer has played the choked flow effect like this, does not cause the smokestack draft that hot-air is directly extracted out, because employing liquefied gas etc. is a fuel, flame is long, mainly is based on convection heat transfer' heat-transfer by convection in the burner hearth, so the minimum burning of this design burner hearth temperature difference is fast in speed.Regulate and control coefficient of excess air burning till in the burner hearth by regulating nozzle pressure size and smokestack plate simultaneously with realization oxidizing atmosphere or reducing atmosphere.

Compared with prior art, the utility model has following characteristics:

1, regulates and control coefficient of excess air in the burner hearth by regulating nozzle pressure size and smokestack plate, realized burning till under the oxidable atmosphere burning till under the also reducible atmosphere.

2, nozzle is located at furnace bottom, smokestack is located at the stove item, the centre is provided with upper and lower dividing plate, the radiant heat transfer that changes resistance furnace is main for based on convection heat transfer' heat-transfer by convection, makes in the burner hearth temperature difference littler.

3, easy and simple to handle, it is low to burn till cost, can adjust easily and burn till speed and firing time.

The utility model is applicable to the high-temperature test facility as industrial circles such as pottery, glass, cement, colorants.

Fig. 1 is the A-A cutaway view that the utility model rises flame formula gas furnace;

Fig. 2 is the front view that the utility model rises flame formula gas furnace;

Fig. 3 is the B-B cutaway view that the utility model rises flame formula gas furnace;

Fig. 4 is the C-C cutaway view that the utility model rises flame formula gas furnace.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

As shown in the figure, the utility model includes thermometer 1, electronic ignition switch 2, Pressure gauge 4, Pressure gauge 5, pressure regulator valve 6, be provided with nozzle 6 at furnace bottom, refractory brick 7, fire door 9, between stove outer covering and refractory brick 7, be provided with light heat insulation material 13, bottom and 6 of nozzles at burner hearth 14 are provided with lower clapboard 8, one end of lower clapboard 8 places furnace wall refractory brick fixing, leave certain distance between other three limits of lower clapboard 8 and the furnace wall and form the groove 16 that overdoes, lower clapboard has just played the effect of muffle like this, avoid flame directly to be sprayed onto the bottom that is heated goods, simultaneously, also make flame cross-flow in burner hearth 14, make to be heated goods and to be heated more even; Be provided with suction fire hole 15, smokestack 11 and pumping board 12 at the top of stove, control the draft of smokestack by pulling plate 12, on the top of burner hearth 14 and inhale between the fire hole 15 and be provided with upper spacer 10, the periphery of upper spacer 10 all places the refractory brick of furnace wall fixing, but all have logical fire hole 17 on four angles of upper spacer 10, like this, upper spacer 10 has played the choked flow effect, do not cause smokestack 11 that hot-air is directly extracted out, thereby the temperature difference is minimum in the burner hearth.

Operation principle is as follows: will be heated goods and put into burner hearth 14, connect source of the gas, under the situation of opening fire door 9, press electronic ignitor switch 2, supply gas pressure is adjusted to required state, close upper furnace door 9 then and stablize intensification, flame enters burner hearth 14 through the groove 16 that overdoes at lower clapboard 8 edges, behind the cross-flow heating product, through the logical fire hole 17 of 10 4 jiaos of upper spacers, discharge through smokestack 11 again by inhaling fire hole 15, heating rate and firing atmosphere are by plate 12 controls of nozzle pressure size and smokestack 11, by thermocouple temperature in the burner hearth 14 are measured and to be presented on the thermometer 1, close source of the gas after temperature reaches predetermined value, electronic ignitor switch returns zero and gets final product.

Claims

1, a kind of flame formula gas furnace that rises, it includes shell, thermometer (1), electronic ignition switch (2), Pressure gauge (4), Pressure gauge (5), pressure regulator valve (6), refractory brick (7), fire door (9), burner hearth (14), light heat insulation material (13), it is characterized in that:

A, be provided with combustion gas nozzle (6), be provided with at the top of body of heater and inhale fire hole (15), smokestack (11) in the bottom of body of heater, and smokestack plate (12), flame is flowed from lower to upper;

B, between combustion gas nozzle (6) and burner hearth (14), be provided with lower clapboard (8), at burner hearth (14) and inhale between the fire hole (15) and be provided with upper spacer (10).

2, the flame formula gas furnace that rises according to claim 1 is characterized in that an end of lower clapboard (8) is fixed in the refractory brick (7) of furnace wall, between other three limits and the furnace wall certain distance is arranged, and forms the groove (16) that overdoes.

3, according to right 1 or the 2 described flame formula gas furnaces that rise, it is characterized in that: four limits of upper spacer (10) all are fixed in the refractory brick (7) of furnace wall, and four jiaos of upper spacer (10) have logical fire hole (17).