CN2106953U - Archimedean spiral burner - Google Patents

Abstract

The utility model relates to a burner which is suitable for various oil burners in hotels, collectives, dining rooms in armies and marine vehicles to use. In the burner, a furnace body comprising an inner and an outer rotary towers a distance apart is fixed in a furnace chamber; the bottom of the rotary tower along the tangent direction is provided with an air-stream tube in which an oil supply valve is arranged. The burner is characterized in that a movable rotary tower in an involute-shaped structure is additionally arranged between the two tower bodies. Flame distribution situation in the furnace can be changed at will through adjusting the inlet position of the movable rotary tower to make the burner achieve the optimal burning state. The burner with strong adaptability can adjust the flame distribution according to different requirements and raise the thermal efficiency by 20-25% than a furnace device of the same type.

Description

Archimedean spiral burner

The utility model relates to a kind of all kinds of restaurants, collective and army dining room and used burner of various marine fuel oil cooking stoves of being suitable for, this burner is arranged in the burner hearth, because being the Archimedian screw trajectory, its combustion flame rises, so again this burner is referred to as the Archimedian screw burner.

In the fuel oil stove and accessory that present all kinds of collectives eating and drinking establishments uses, mainly contain three kinds of gravity-flow ventilation oil dripping stove, gasified fuel stove and whirlwind oil burners.Owing to determined by Range structure and combustion system, the combustion efficiency of above-mentioned fuel oil stove and accessory and efficiency of combustion thereof all have very big-difference.

Gravity-flow ventilation oil dripping stove is mainly used at most with the boats and ships diet, and its cooking range structure is fixed, and fuel oil flows directly in the burner hearth tray for combustion by oil pipe, and combustion system adopts spontaneous firing.Whole combustion process adopts a variable to control, and has both adopted control valve control fuel delivery, adjusts the flame size purpose to reach.So poor, the over-emitting black exhaust of this oil oven combustion efficiency, the fuel consumption height, the thermal efficiency is low, and carbon deposit is very easily formed on burner hearth and cooker bottom.

The gasified fuel stove adopts the vaporization combustion principle, utilizes compressed air that fuel oil is refined into molecule by vaporization nozzles, burns then, and its combustion efficiency is comparatively desirable.But the shortcoming that exists is that flame size can't be adjusted, and normal vaporization combustion air consumption and noise sound are very big, and needs to be equipped with air compression plant, has increased oil burner separate unit cost cost, and its scope of application is greatly limited.

The CN86202004 patent has been introduced a kind of whirlwind atomized fuel stove, this oil oven adopts the overheavy firing mode, and blower fan is forced oxygen supply in burner hearth, and whole combustion process need regulate fuel delivery and two variablees of air distribution amount are controlled, to seek obtaining best air distribution, promote that fuel oil fully burns than effect.Facts have proved, the combustion efficiency quality of stove and accessory is not only relevant with oil kind and combustion system, and it is relevant with flame distribution in cooking stove, this oil oven weak point is limited than adjustable range by burner hearth fixed structure and air distribution, flame distributes in burner hearth and fired state can't adjust accordingly according to operating position, flame combustion distribution dullness.When particularly burning the variety classes fuel oil, as kerosene, diesel oil and flushing oil, because these oil there are differences aspect the physical characteristics such as viscosity, volatility, burning-point and calorific value, depend merely on and regulate air distribution than guaranteeing that with regard to being difficult to oil burner is in optimal combustion state and user mode all the time, therefore only change and have the cooking range structure of stove and accessory now, make the flame distribution state reach arbitrarily adjustable, just may improve and improve the oil burner thermal efficiency, satisfy the needs that people use different fuel oils.

The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of cooking range structure to require the oil burner adjusted arbitrarily with type of fuel and flame distribution, to satisfy collective unit and the diet service trade demand to the fuel oil stove and accessory.

Oil burner overall structure provided by the utility model is very simple, wherein furnace body partly adopts inside and outside revolving between tower bistable fixed structure, two tower bodies to have certain intervals and bottom fixedly to fuse, outward turning tower outer wall is provided with an airflow pipeline near the bottom along peripheral tangential direction, this pipeline directly and the small-power fan outlet connect, make extraneous air enter two and revolve between the tower by gas flow tube.This burner fueller adopts adjustable rod-type delivery valve, and this valve fore-end passes the said flow pipe, and is fixed in the gas flow tube.The delivery valve front end is an atomizer, and valve body adopts metal tube to make, and needle-valve is housed in the valve body, and this needle-valve links to each other with the valve rear end regulating handle.Use regulating handle can open and close atomizer and adjusting fuel delivery size.The utility model design feature is that inside and outside the revolving of above-mentioned cooking stove is provided with a movable tower that revolves between the tower, and this revolves tower structure and is involute shape or analogous shape.Revolve tower involute inlet when activity and be in inside and outsidely when revolving between the tower diverse location, do not changing air distribution than under the prerequisite, different combustion distribution states both can appear in combustion flame.Regulate burning thereby reach, make flame in burner hearth, be in the best distribution state, prolong flame holdup time in burner hearth, promote the abundant completing combustion of fuel oil, improve the purpose of the oil burner thermal efficiency.

Tower structure is revolved in the utility model employing activity, fixedly cooking stove tactic pattern but also utilization activity are revolved tower and can be taken into full account fuel characteristic and flame distribution state not only to have changed in the past oil burner, make oil burner both can regulate flame size by fuel delivery, also can revolve tower position adjustment flame distribution state, the fuel oil of supply is fully burnt by changing activity.Reached the purpose of regulating different flame distribution states, improving the oil burner thermal efficiency, actual test proof, tower structure is revolved in the employing activity can make fire box temperature reach 1100～1200 ℃, improves the thermal efficiency about 20～25%.

Fig. 1 is this burner structure and combustion flame distribution schematic diagram thereof.

Flame distribution view when Fig. 2 (a) and (b), (c), (d) expression activity are revolved tower and be in four kinds of diverse locations of burner hearth.

As seen from Figure 1, the activity of this burner is revolved tower 2 and is arranged between inward turning tower 1 and the outward turning tower 3, and gas flow tube 4 connects with little fan outlet (not drawing among the figure), and delivery valve (its structure is same as the prior art) joins with oil tank.This burner utilizes oil tank internal pressure (being generally 0.5～1.0 atmospheric pressure) that liquid fuel kerosene, diesel oil, flushing oil are sprayed in the cooking stove with 0.5～0.7 meter speed of per second by delivery valve 5, utilize fan airflow to form oil, gas mixing swirl flow combustion after lighting, the adjustment activity is revolved tower 2 inlet and is revolved position between the tower 1,3 inside and outside, change flame combustion and distribution, four kinds of flame distribution figure that represent by Fig. 2 can clear view to this variation.

Among Fig. 2 (a), revolve tower 2 inlet when activity and when revolving between the tower 1,3 A place, both formed two flame track a ', b ' inside and outside in the burner hearth, this moment, flame was full of whole burner hearth, and oil inflame is comparatively complete, suitable burning diesel oil.

Among Fig. 2 (b), activity is revolved tower 2 inlets and is positioned at cooking stove B place, and furnace flame concentrates on inward turning tower 1 and activity is revolved in the middle of the tower 2, and flame is little and concentrated, and whole fire box temperature is lower, is suitable for using under little fire or the slow fire situation.The kerosene that burns this moment is more suitable.

Among Fig. 2 (c), tower 2 entry positions are revolved in activity be transferred to cooking stove c place, flame this moment stroke in burner hearth is the longest, and oil inflame is comparatively abundant, can use diesel oil or flushing oil fuel under this kind state.

Among Fig. 2 (d), activity is revolved tower 2 inlet and is avoided burner hearth low-temperature space (air flow inlet place) and be positioned at cooking stove D place, though this moment, flame travel was shorter than state shown in Fig. 2 (c) less, but revolve between the tower 2 and burn because flame can enter inward turning tower 1 and activity with higher temperature, therefore, its flame distribution and combustion efficiency the best and fuel oil adaptability are stronger.

Claims (1)

1, a kind of oil burner, furnace body fixedly is made up of the inside and outside tower 1,3 that revolves that keeps at a certain distance away, wherein outward turning tower 3 tangentially is provided with gas flow tube 4 near the bottom, delivery valve 5 is housed in this pipe, and this burner characteristics are to be provided with a structure between the said fixing tower body to be the activity of involute shape and to revolve tower 2.