CN1405497A - Momentum-drawing fully-premixed range - Google Patents

Abstract

The present invention relates to a momentum suction full premix gas range which can replace the horizontal flow gas range, which applies to lkiquified gas, natural gas, and coal gas combustion unit. It comprises of four main units (gas injector, momemtum suction premixer, gas burner and furnace grate base). The gas range is characterized by fast chemical reaction after ignition, quick burning and high temperature. In addition, it helps keep warm by flame and burning gas, making good use of tail gas, and has good circulation of reflected heat and radiant heat, thus saving energy and reducing environmental pollution.

Description

Momentum-drawing fully-premixed range

The present invention relates to a kind of momentum-drawing fully-premixed range of alternative advection gas kitchen ranges.It is as being used for liquefied gas, natural gas, gas-fired instrument.

The domestic gas kitchen range that use all belong to the advection gas kitchen ranges at present, recent two decades is unique kitchen range of being used widely, but this advection gas kitchen ranges exposes its a series of shortcoming gradually in actual application: 1, the big weight of cooking range furnace end volume is big, heat absorption and distribute heat are big, thus interior can the dissipation greatly.2, combustion gas and Air mixing chance for once in the burner is so some premixed gas.Still the combustion gas of unmixed air can only be carried out the second time and mix with air when the outlet burning.Though this combustion method also may completing combustion but its combustion flame speed is slow, seriously lacks general firepower.3, since fire strive long, grate big, flame is big with the inside and outside contact area of ambient cold air, causes flame temperature decline.4, owing to be subjected to the restriction of above-mentioned shortcoming and some condition, be difficult to take corresponding measure that flame, burning gases are incubated.Using waste heat from tail gas and reverberation do not have condition to obtain utilizing yet.Therefore the advection gas kitchen ranges energy dissipates big.Pollution severe height, combustion thermal efficiency is low.The advection gas kitchen ranges thermal efficiency that uses is up to 45-55% at present, and the general advection gas kitchen ranges thermal efficiency has only 35-45%.

The objective of the invention is development provides that a kind of energy consumption is low, to pollute severe low, and the cost cost is low, and safe and reliable momentum-drawing fully-premixed burning kitchen range easy to use are with alternative present advection gas kitchen ranges.

The present invention relies on liquefied gas, natural gas, momentum-drawing combustion air when the pressure of coal gas own is sprayed at a high speed by 4 grades of main injection jets and 1 grade of cap jet.And enter top, letter road from interior bypass passage (12) (13) and carry out mixing fast evenly, because premixed is fast and fully, fast through the igniting chemical reaction, it is very rapid to burn, and can obtain high temperature, energy consumption is low.The momentum that has like this formed a kind of not additionaling power attracts fully-premixed burning kitchen range, and its structure is made up of following four big parts.1, fuel gas injection device, by rotary switch screw (1), milk head screw (2), lock nut (3), appendix (4), shower nozzle (5) are formed.2, momentum-drawing premixed device by retainer (6), draws and inhales spout seat (7) (8) (9) composition.3, burner draws suction inlet (10), flow splitter (11), interior bypass passage (12) (13), steady crest of flame type groove (14), Pyatyi puff prot (15), Pyatyi by level Four and draws suction inlet (16), Pyatyi air inlet (17), aerofoil profile and prop up lining (18), central combustion chamber (19), outer fire ring (20) and formed.4, grate grate base props up lining (21) by grate, tail gas guiding hypotenuse (22), and grate base (23) is formed, and the fuel gas injection device is screwed in appendix (4) on the nipple of milk head screw by lock nut (3).The momentum-drawing premixed device is inserted on the shower nozzle (5) by retainer (6) end opening.Burner, to be inserted into retainer (6) by burner bottom suitable for reading, and grate grate base is sat and is placed in the recessed circle of kitchen range face (24).

The momentum that designs and produces by technique scheme attracts fully-premixed range, burning work is to open burnt gas switch earlier, gas-flow is through gas pipeline (4), spray by gas spray head (5), produced the kinetic energy of momentum-drawing combustion air, combustion gas enters first and draws and inhale spout seat (7) bottom and draw suck (account for required air inlet 20%), mist is a momentum for the first time again, draw suction inlet from the ejection of second spout by two and draw suck, draw suction inlet up to 4 grades of spouts and 4 grades in the same way, 4 grades are drawn the gaseous mixture that suction inlet (10) draws suction and are divided into two-way by flow splitter (11), wherein 75% gaseous mixture from bypass passage (13) enter enter again after fully mix on bypass passage top outside fire ring (20).All the other partly gaseous mixtures enter the 5th grade of spout ejection from inner by-pass (12) and produce the 5th and draw suck and carry out the 5th and mix.(it is 80% that the 2-5 level is introduced air capacity), the 5th gaseous mixture are opened the ignition switch igniting after entering central combustion chamber (19), and central combustion chamber (19) burns simultaneously with outer fire ring (20).40mm, flame are short though flame diameter has only, profile is also not too obvious, grate base (23) with produced 3 heat affected zone after the bottom of a pan engages.Be direct burning heat affected zone, the bottom of a pan A in the flame diameter 160mm scope, is burning gases the bottom of a pan heat affected zone B in the diameter 160-240mm scope, and diameter 240mm scope is tail gas heat affected zone, the bottom of a pan C that applies ointment or plaster, Fire Radiation heat and reverberation D in addition.With regard to above-mentioned burning operation principle, constitute a kind of existing flame, the insulation of burning gases, the utilization of using waste heat from tail gas has radiant heat again, the good combustion working cycles of reverberation performance.Its energy-saving effect is very remarkable.And greatly reduce environmental pollution.This kind kitchen range are simple in structure, light, and are esy to use, safe and reliable.Its combustion thermal efficiency reaches more than 80%.

The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.

Fig. 1 is a cross-sectional schematic of the present invention.

Fig. 2 is the A-A generalized section of Fig. 1.

By shown in Figure 1,1, the fuel gas injection device, the head screw (2) of will suckling is contained in the kitchen range rotary switch screw (1), by lock nut (3) appendix (4) is screwed on the nipple.Again shower nozzle (5) is gluedd joint in the other end of appendix.

2. momentum-drawing premixed device, produce one jet when spraying by shower nozzle (5), ambient air enters first with jet body and draws suction inlet, momentum entrainments, formed first order premixed gas, drawn and inhale spout seat (7) (8) (9) and not only played to draw and inhale the combustion air effect but also play the gaseous mixture effect of spraying, 2-4 level jet all is the mist that sprays, comprise that the 5th grade in the letter road, center (12) is drawn the suction spout, 2 grades are drawn suction spout seat (7) is that design is on premixed device retainer (6) body.Drawing suction spout seat (8) (9) is to be inserted in the premixed device retainer (6).

3. burner; drawing the gaseous mixture of inhaling spout seat (9) ejection by the 4th grade enters the burner bottom and draws suction inlet (10); because the mist centre of the 4th grade of spout ejection and the gaseous mixture ratio of perisphere are different; the gaseous mixture ratio in centre does not reach proper mixture ratio, must augment certain air capacity once more and carry out center the 5th mixing.So by inner by-pass wall and bypass passage inwall junction is flow splitter (11), the gaseous mixture that the 4th grade of ejection is drawn suction is divided into two-way by flow splitter (11).One the tunnel is that the gaseous mixture in centre enters center inner by-pass (12), by level V spout (15) ejection, draws suction inlet (16) and air is introduced from 5 grades of air inlets (17) is mixed.Enter central combustion chamber (19) again.Another road be the mixed airflow of perisphere through bypass passage (13), enter and enter outer fire ring (20) again after further mix on bypass passage top, through the ignition center combustion chamber with outside fire ring burn rapidly.The inner by-pass outer wall props up lining (18) with the bypass passage outer wall by 3 aerofoil profiles and is connected.The burner bottom is connected with the full premixed device retainer of momentum-drawing socket suitable for reading.

4, grate grate base: pot is placed grate props up lining (21), at this moment pot with understand 3 heat affected zone of generation after the grate base engages.Flame diameter at first has only 40mm, outwards move by the center, we will be referred to as flame heat affected zone, the bottom of a pan A that directly burns in the diameter 160mm scope for diameter 160mm in change, beyond the diameter 160mm no longer is flame, should be referred to as burning gases, gradually to external diffusion, temperature is along with diffusion reduces gradually, therefore we will in the 160-240mm scope be burning gases the bottom of a pan heat affected zone B, beyond the 240mm is tail gas, if tail gas is not taked corresponding measure, tail gas is difficult to the contact the bottom of a pan, using waste heat from tail gas will cause waste, in order to make using waste heat from tail gas obtain utilizing, we establish a guiding hypotenuse (22) at grate base diameter 240mm edge, and tail gas just has the directionality surface, the bottom of a pan of applying ointment or plaster, diffuse to form the bigger spoke face that is heated gradually, thereby using waste heat from tail gas can obtain utilizing.Therefore we are beyond the 240mm, and to be referred to as apply ointment or plaster heat affected zone, the bottom of a pan C, Fire Radiation heat and reverberation of tail gas be because grate base (23) surface is white in color, and have certain reflecting properties.

Figure 2 shows that the burner aerofoil profile props up lining (18) cross sectional shape.

Claims (2)

1. the momentum-drawing fully-premixed burning kitchen range of an alternative advection gas kitchen ranges mainly are made of four big parts.1, the fuel gas injection device, formed by rotary switch screw (1), milk head screw (2), lock nut (3), appendix (4), shower nozzle (5).It is characterized in that appendix (4) not only plays the gas transmission effect but also play burner and prop up the lining fixation, shower nozzle (5) sprays combustion gas in vertical direction.2, momentum-drawing premixed device by retainer (6), draws and inhales spout seat (7) (8) (9) composition.It is characterized in that drawing suction spout seat (7) is to design on retainer (6) body, and drawing suction spout seat (8) (9) is to be inserted in the retainer (6), and the retainer end opening is inserted on the shower nozzle (5).3, burner, draw suction inlet (10) flow splitter (11), interior bypass passage (12) (13) by the burner bottom, steady crest of flame type groove (14), Pyatyi puff prot (15), Pyatyi is drawn suction inlet (16), and Pyatyi air inlet (17), interior bypass passage connect aerofoil profile and prop up lining (18), central combustion chamber (19), outer fire ring (20) is formed.It is characterized in that whole burner part all is to adopt light-weight refractory, anticorrosive, anti-oxidant, low heat conductivity ceramic material is made, and sinters integral body into, and burner is that to be inserted into retainer (6) suitable for reading.4, grate grate base, grate prop up lining (21), tail gas guiding hypotenuse (22), and grate base (23) is formed, and its feature grate grate base all is that employing is high temperature resistant, the low property led, insulation material is made, and the surface is white in color.And sintering integral body into, grate grate base is sat and is placed in the recessed circle of kitchen range face (24).

2. according to the described civilian momentum-drawing fully-premixed burning kitchen range of claim 1, its feature is by the fuel gas injection device, the momentum-drawing premixed device, and burner three big parts consist of vertical burner, and its volume is little, in light weight.More than all parts in the three big parts, comprise the same axis of grate base, burner is installed perpendicular to the kitchen range face.