CN2219443Y - Safety self-gasifying device for liquid fuel range - Google Patents

Abstract

The utility model provides a safe self-gasifying device for a universal liquefied petroleum gas range using liquid phase hydrocarbon fuel. The device is composed of gasifiers, a bumping air bag and connecting pipelines, wherein, the gasifiers are connected in series, and a liquid phase self-locking device is arranged in the bumping air bag. Liquid phase hydrocarbon fuel having a special prescription can automatically gasify in the gasifiers for supplying combustion, and the liquid phase self-locking device arranged in the bumping air bag can automatically close oil paths to ensure safety when fire is extinguished abnormally (blown out by wind or poured by soup). A universal fuel gas range can successfully burn liquid fuel via the device, and the utility model has the characteristics of easy ignition and high safety without the need of inflation and without red flame, etc.

Description

Liquid fuel cooking range safety autopneumatolysis device

The utility model relates to a kind of safe autopneumatolysis device that uses the hydrocarbon liquid phase class A fuel A on general liquefied petroleum gas kitchen range, belongs to house coal gas kitchen field in the combustion apparatus.

General household liquified oil gas kitchen range can only use and be the liquefied petroleum gas of gas phase at normal temperatures and pressures.And the hydro carbons liquid phase fuel, as C ₅, C ₆, need inflate and preheating during burning such as kerosene.In recent years, C is used in some provinces and regions, China south morely ₅Class A fuel A is when kitchen range use, and electric air pump is inflated in storage liquid steel cylinder, utilizes air to send on the general liquefied petroleum gas kitchen range with liquid fuel atomization with after gasifying and burns.Though this mode can make C preferably ₅Fuel combustion, but owing to need wear air pump, do not have electricity or power failure and just be difficult to use, and the air pump fault is more, needs often to repair, and brings inconvenience to the user; When temperature is low, only come gasification result bad with air, firepower obviously reduces.Owing to exist these shortcomings to make its application be subjected to considerable restraint.Chinese patent CN1077790A discloses a kind of " domestic LPG gasifying system " (application number 93112403.4), is used for C ₅For leading and containing a small amount of C ₄Liquid fuel on kitchen range, burn.This system generally is used for the eyes kitchen range, and its core is in each kitchen range eye central authorities a gasifier to be housed.Gasifier is made up of oil inlet pipe, escape pipe, nozzle opening, heat-transfer area, ball float and holder net.From storing the C that liquid steel cylinder and pressure-reducing valve come out ₄, C ₅Fuel enters gasifier through carrier pipe, C ₄Gasification is used for kitchen range ignition and heating and gasifying device, C in advance ₅Burning is supplied with in the gasification back.When breaking down (abnormal misfire), the gasifier temperature descends, C ₅It still is liquid phase.The liquid phase fuel that constantly enters in the gasifier rises liquid level and the picking-up ball float, and the bellmouth of finally blocking the escape pipe upstream end prevents the liquid fuel leakage.The liquid fuel of this system leads to two gasifiers respectively by threeway, and promptly the oil-feed oil circuit is a state in parallel.

There is following problem in this system:＜1〉because the oil-feed oil circuit adopts parallel way, when only using a kitchen range at the moment, the kitchen range eye in the use can heat its central gasifier and keep normal gasification and burning.And another kitchen range eye is owing to not using the normal temperature state that is in, entering liquid phase fuel in the gasifier can not gasify and gather therein and liquid level is risen, when liquid level rises to certain altitude, will hold up ball float and block escape pipe, this kitchen range eye can't be realized igniting and burning this moment.＜2〉owing to structural relation, the escape pipe in the gasifier is generally 4～6mm, and the rational proportion of floating ball diameter and its sealing caliber should be 1.5～2: 1, and promptly floating ball diameter is about 10mm.This moment, the ball float volume was 0.52cm ³, and if C ₅Proportion is about 0.62, and C ₅The whole ball float of submergence, its buoyancy also only is 3.2mN, even ignore the suffered gravity of ball float itself, so little active force also is effective sealing that can't realize liquid, simultaneously, because these potted components all are loaded in the gasifier, and gasifier is under the flame high-temperature baking, temperature is very high, can't adopt the sealing ring of flexible material, thereby makes effective sealing become more difficult.＜3〉because gasifier is positioned at kitchen range eye central authorities, and generally have two to enclose pinkeye in each kitchen range eye of most of general liquefied petroleum gas stove, or holistic ceramic infrared burner, its central authorities do not have can be for the space that gasifier is installed, therefore when now having used the user of liquefied petroleum gas then when using liquid fuel, just need purchase kitchen range again.

The purpose of this utility model provides a kind of device that uses the hydrocarbon liquid phase class A fuel A on general liquefied petroleum gas kitchen range, this device not only can make the arbitrary kitchen range eye of eyes kitchen range (or multi-hole kitchen range) can both realize igniting and normal combustion at any time smoothly, and when abnormal misfire, can realize the liquid phase self-locking reliably, prevent that the fuel oil leakage is to guarantee safety.

Safe autopneumatolysis device of the present utility model is by gasifier, and buffer air bag and connecting pipe are formed.Gasifier is a flat cavity, all has an inflow pipe and effuser to be attached thereto and connects.Each kitchen range eye all is equipped with two gasifiers, and they are symmetrically placed in the space between the pinkeye outside and the liquid-bearing pan.The eyes kitchen range has four gasifiers, all adopts between each gasifier to be connected in series, and the gasifier effuser that promptly is in the upstream all communicates with its downstream gasifier inflow pipe.Buffer air bag is made up of pneumatophore, airbag cover, liquid phase self-locking device, inflow pipe and escape pipe.The gasifier effuser in downstream is communicated with the inflow pipe of buffer air bag, and escape pipe then communicates with the air admission hole of two kitchen range eye switch assemblies respectively by a threeway.The liquid phase self-locking device is arranged in the pneumatophore inner chamber, is made up of float, lever, hinge, bead (cylinder, cone), sealing ring.Sealing ring can be installed in inflow pipe, also can be installed in the escape pipe.One end of lever connects firmly on float, and the other end then links with hinge as fulcrum, and can rotate around the fulcrum axis.When liquid level rose the picking-up float, lever was pressed to sealing ring with bead, thereby sealing escape pipe (or inflow pipe) reaches the purpose of cutting off oil circuit.

Embodiment of the present utility model is provided by accompanying drawing one, figure two and figure three.

Figure one is the pipeline flow chart of this device when being used for the eyes kitchen range.

Figure two is structural representations of gasifier.

Figure three is structural representations of buffer air bag.

Operation principle below in conjunction with this device of description of drawings.

This device is formed the kitchen range combustion system jointly with steel cylinder, pressure-reducing valve and general kitchen range.Open cylinder angle valve, from the hydrocarbon liquid phase class A fuel A that contain a small amount of combustion gas of steel cylinder through the pressure-reducing valve outflow, enter gasifier 1, gasifier 2, gasifier 3 and gasifier 4 successively through carrier pipe, effuser 15 openings are higher owing to inflow pipe 14 openings in the gasifier are lower, must have certain liquid phase fuel to be trapped in the gasifier.The fuel that flows out from gasifier 4 effusers enters the inner chamber of pneumatophore 7 from the inflow pipe 6 of buffer air bag 5, and liquid phase fuel is collected at the bottom of airbag chamber, and combustion gas then enters the air admission hole of Range switch assembly through escape pipe 8.If corollary stove is the piezoelectric ceramic electric igniter, press and rotate ignition switch this moment, combustion gas will be lighted and in pinkeye burning, the gasifier that is positioned at the kitchen range eye outside is heated, and make liquid phase fuel gasification wherein and enter the kitchen range nozzle and realize continuous normal combustion through buffer air bag.Because each gasifier is connected in series, so as long as a kitchen range eye burning is arranged, the liquid phase fuel of the gasifier of flowing through can both realize heating and gasifying, entering in pneumatophore 7 chambeies all is fuel through gasifying.Because the air admission hole of the ignition switch assembly of two kitchen range eyes all communicates with air bag escape pipe 8, when so another kitchen range eye need use, at any time all can realize igniting and burning, and the phenomenon that to light a fire because escape pipe is plugged among the patent CN1077790A can not occur being similar to.When abnormal misfire (wind is gone out, soup put out by water) phenomenon takes place when, the gasifier temperature descends, entering wherein liquid phase fuel can not gasify and enter the pneumatophore inner chamber and gather therein, along with liquid level rises, hold up float 9 and drive lever 10 and rotate around hinge 11, bead 12 is pressed to sealing ring 13 and escape pipe 8 is blocked, thereby prevented the leakage of liquid phase fuel.Because the volume of float 9 can be done greatlyyer, can produce bigger buoyancy, simultaneously the float center than center of pellet from the big manyfold of hinge axle center distance, it is much bigger that bead is pressed to the buoyancy of force rate float of sealing ring, and buffer air bag is far away from flame, and when kitchen range normally used, its temperature only was 60～80 ℃ through experimental verification, sealing ring material can adopt flexible materials such as oil resistant rubber, so the liquid phase sealing is reliable especially.

We have carried out long-term operation and have investigated having increased on the general liquefied petroleum gas eyes kitchen range of this device, the result is very desirable, use liquid fuel to reach the same effect of liquefied petroleum gas fully, its igniting easily, flame stabilization during burning, do not have flourishing phenomenon, the kitchen range thermal efficiency is 58%, waste gas CO content is less than 0.05%.We also deliberately cause abnormal misfire with manual method, assign 1h in the situation that cylinder angle valve and Range switch are opened simultaneously, because the liquid phase self-locking device in time plays a role, find to illustrate that the security performance of this device is fabulous by any oil leakage phenomenon near nozzle.

Because liquid fuel is compared with liquefied petroleum gas, have the advantage that the source is easy, price is lower, this device can be realized having broad application prospects liquid fuel replacement liquid liquefied oil gas on general kitchen range.

Claims (2)

1, a kind of liquid fuel cooking range safety autopneumatolysis device, form by a plurality of gasifiers, buffer air bag and connecting pipe, it is characterized in that gasifier is installed in the space between the pinkeye outside and the liquid-bearing pan, and be connected in series with pipeline between each gasifier, a liquid phase self-locking device that is made of float 9, lever 10, hinge 11, bead 12 and sealing ring 13 is arranged in the buffer air bag.

2, according to the described kitchen range safety of claim 1 autopneumatolysis device, it is characterized in that an end of lever 10 is fixed on the float 9.

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