CN2158503Y - Burner - Google Patents

Abstract

The utility model relates to a burner device used for fuel gas, such as burners of a cooker and a stove. The burner device used for fuel gas comprises a combustion head 1 and a mixing pipe 2. The burner device used for fuel gas is characterized in that a premixer 4 is connected with a gas inlet port of the mixing pipe 2. A fuel gas spray head is arranged and installed in the premixer 4. A blower 7 is connected with the rear end of the premixer 4. The primary air oxygenation quantity of the burner device used for fuel gas is enhanced through the premixer 4 and the blower 7, and the fuel gas is fully mixed. The burner device used for fuel gas has the advantages of strong adaptability, good combustion effect, fire concentration and high heat efficiency. By using the burner device used for fuel gas, the flame temperature can be raised by 200-400 DGE C.

Description

Burner

The burnt gas combustion device that the utility model relates to is as the burner of kitchen range, stove and accessory.

The burner (seeing accompanying drawing 1) that combustion gas is at present used is the jet injection suction primary air oxygenation by combustion gas nozzle 23, combustion gas and primary air enter into burner head 21 for burning after mixing tube 22 mixes, its shortcoming and defect is that gas supply pressure size directly influences primary air (oxygen) amount, the primary air oxygen amount that jet sucked more by force when the supply gas pressure value was higher is more relatively, can reach the designing requirement of burner.But because supply gas pressure does not often reach normal pressure or jet-flow when more weak, the primary air oxygen amount that injection is sucked in the mixing tube reduces greatly, cause burning insufficient, flame is yellowish red color, and primary air becomes parastate to flow with combustion gas in mixing tube on the other hand, adds the proportion difference, the Forced Mixing ability is very little, so mixing velocity is slow, be difficult for reaching fully and mix, influence burning quality.Also need auxiliary air oxygen in this in addition burner normal combustion process, promptly requiring has air oxygen further combustion-supporting around the burner head flame, could guarantee the burner normal combustion like this, such oxygen supply and combustion system are that nature carries out, so can not reach the best combustion effect, big or the gas supply amount is big when burner rating, when being big fire, it is inadequate in other words conj.or perhaps that the auxiliary air oxygen and aiding combustion is not enough often, and particularly the burner head central part is more obvious, and auxiliary air oxygen is influenced by peripheral flame and is difficult to enter into central part, make it often be in anaerobic condition, make burning insufficient, influence burning quality, reduce the thermal efficiency.These problems become more obvious because the calorific value of combustion gas is different with oxygen demand at gas source not simultaneously.So a kind of burner design typing back adaptive capacity is very narrow.More can not general various combustion gas, promptly can not general coal gas, oil liquefied gas, natural gas.

The purpose of this utility model is to improve at the deficiencies in the prior art, provides a kind of adaptive capacity strong, and combustion efficiency is good, the burner that the thermal efficiency is high.

Major technique solution of the present utility model is to connect at the air inlet port of mixing tube a premixed device is set, the gas supply shower nozzle is installed in this premixed device, the rear portion of premixed device inner chamber and an air air supply source be communications and liaison mutually, improve the primary air oxygen-adding amount, air oxygen enters in the premixed device and combustion gas together blows out from the gas outlet of premixed device front end and enters mixing tube, the air oxygen of capacity not only is provided, and oxygen is fully mixed with combustion gas at premixed device outlet side interruption-forming Forced Mixing air-flow, strengthen the oxygenation ability and the effect of primary air, and improve the burning quality of combustion gas with this, adapt to the variation that different calorific value fuel gas are used by the wind supply quantity of adjusting primary air.

Fig. 2 is the utility model structural representation.

Fig. 3 is the utility model embodiment schematic diagram.

Below in conjunction with accompanying drawing the utility model is elaborated.

The utility model burner apparatus includes burner head 1, the mixing tube 2 that connects with burner head 1, in mixing tube, supply the gas spray head 3 of combustion gas, it is characterized in that being equipped with a premixed device 4 at air inlet port 5 first line of a couplet of mixing tube 2, gas spray head 3 can move axially being installed in the premixed device 4 of adjustment, the front end of premixed device 4-give vent to anger port 6 coning, or premixed device 4 inner chambers own are exactly conical, the front end of gas spray head 3 is facing to the port 6 of giving vent to anger of premixed device inner chamber, gas spray head 3 front end profiles and premixed device give vent to anger port 6 shapes corresponding promptly also be conical, both cone angles are basic identical, cone angle is 25～30 °, when gas spray head 3 is regulated in front and back, the port 6 of giving vent to anger of premixed device 4 is moved by the position of gas spray head 3 and amplifies or dwindle, and form the uniform annulus taper port of giving vent to anger, premixed device 4 inner chamber rear portions are connected with an air blast 7, in premixed device, mainly provide primary air oxygen by air blast 7, the accompanying drawing illustrated embodiment, gas spray head 3 tandem arrangements are slidingly matched with premixed device aft bulkhead 4 ' on premixed device 4 and connect, the part that promptly stretch out outside the premixed device rear end of gas spray head 3 is docked with gas supply pipe 8 threaded engagement, the adjusting lock nut 9 who cooperates with gas supply pipe 8 end faces is arranged on gas spray head 3, be provided with keeper-positioning linkage rod 10 at premixed device 4 and 8 of gas supply pipes.

The utility model is by premixed device and many grades or adjustable speed fan reinforcement primary air oxygen, be not subjected to the restriction of gas supply pressure, improve the primary air oxygen combined amount of combustion gas, and reach q.s, must be not inessential in other words and auxiliary air oxygen is become, overcome of the harmful effect of auxiliary air hypoxgia to the burner combustion effect.Port is conical because premixed device is given vent to anger, and the pressure of the primary air that blower fan provides is higher than gas supply pressure, the wind speed of port 6 of giving vent to anger is higher than combustion gas, combustion gas is in negative pressure state all the time, so an air oxygen amount is not influenced by gas supply pressure and effluxvelocity, air oxygen is given vent to anger from premixed device and is surrounded combustion gas after port 6 blows out and form behind the convergent cone spray again in the mixing tube inscattering, air oxygen fully can be mixed with combustion gas.Because primary air oxygen-adding amount height, can reach optimum mixture ratio, mix, and gaseous mixture is higher than the normal atmospheric formula at the outlet pressure of burner head 1, institute is so that combustion efficiency is better, and firepower is concentrated, and can improve 200～400 ℃ of flame temperatures.Different according to the calorific value of different combustion gas and oxygen demand can be adjusted the sectional area of the port 6 of giving vent to anger of premixed device by regulating gas spray head 3 in addition, implement the oxygen-adding amount of homophony primary air, adapt to the oxygen demand of different combustion gas.So it is strong to the utlity model has adaptive capacity, not influenced by gas supply pressure and auxiliary air oxygen, can use various combustion gas-coal gas, oil liquefied gas, natural gas, make the burner generalization, combustion efficiency is good, the advantage that the thermal efficiency is high, and when not having blower fan, still can use as normal atmospheric formula burner normal use.

Claims (3)

1, burner apparatus, include burner head, the mixing tube that links with burner head, in mixing tube, supply the gas spray head of combustion gas, it is characterized in that connecting and be provided with a premixed device (4) gas spray head (3) and be installed in the premixed device (4) at the air inlet port of mixing tube (2), the front end one of premixed device (4) has gas outlet (6) with mixing tube (2) union end, and the rear portion of the inner chamber of premixed device (4) and an air supply source be communications and liaison mutually.

2, burner apparatus according to claim 1, it is characterized in that gas spray head (3) but be being installed in the premixed device (4) of moving of axial adjustment, and facing to the port of giving vent to anger (6) of premixed device (4), the port of giving vent to anger (6) of premixed device coning/premixed device (4) inner chamber coning, the profile of the front end of gas spray head (3) and premixed device give vent to anger port (6) shape corresponding also be conical, both cone angles are basic identical.

3, burner apparatus according to claim 1 and 2, it is characterized in that gas spray head (3) tandem arrangement connects last being slidingly matched with premixed device (4) aft bulkhead of premixed device (4), the part that promptly stretch out outside the premixed device rear end of gas spray head (3) is docked with gas supply pipe (8) threaded engagement, the adjusting lock nut (9) who cooperates with gas supply pipe (8) end face is arranged on gas spray head (3), between premixed device (4) and gas supply pipe (8), be provided with keeper-positioning linkage rod (10).

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