CN109945185A - A kind of porous-medium gas hot kitchen range based on sphere accumulation - Google Patents
A kind of porous-medium gas hot kitchen range based on sphere accumulation Download PDFInfo
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- CN109945185A CN109945185A CN201910143618.6A CN201910143618A CN109945185A CN 109945185 A CN109945185 A CN 109945185A CN 201910143618 A CN201910143618 A CN 201910143618A CN 109945185 A CN109945185 A CN 109945185A
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- sphere
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Abstract
The invention belongs to kitchen utensils fields, and disclose a kind of porous-medium gas hot kitchen range based on sphere accumulation.Including interior furnace chamber, outer furnace chamber, outer ejector pipe, interior ejector pipe, porous media filling bed body and igniter, interior furnace chamber is sheathed on the inside of outer furnace chamber, porous media packed bed outer ring includes the first support orifice plate, preheating zone and the first combustion zone being sequentially arranged in above outer furnace chamber, porous media packed bed inner ring includes the second support orifice plate and the second combustion zone being sequentially arranged in above interior furnace chamber, preheating zone, the first combustion zone and the second combustion zone are filled with sphere, and the porosity of preheating zone is greater than the porosity of the first combustion zone.The accumulation that the present invention passes through sphere, to form multi-hole medium combustion region, pass through the porosity of building combustion zone stepped-style simultaneously, the air-flow and temperature gradient steady for shape Heisei, increase combustion intensity, the stability of flame is enhanced, the discharge amount of nitrogen oxides and carbon monoxide, environmental protection and economy benefit with higher are reduced.
Description
Technical field
The present invention relates to gas cooker fields, in particular to a kind of porous-medium gas hot stove based on sphere accumulation
Tool.
Background technique
Gas kitchen refers to the kitchen that straight fire heating is carried out with gaseous fuels such as liquefied petroleum gas (liquid), artificial coal gas, natural gases
Room apparatus.Gas-cooker is called stone or metal plate for standing a stove on as a precaution against fire, and popular degree is known to all, but is difficult to see a current concept.Desk-top stove
Tool mainly (can be seperated shell by burner (burner, interior outer fire cover), valve body (containing nozzle, air door plate, volute spring), shell
Body --- panel, back plate and left side plate assemble, and are also possible to integrally stretching shell), grate, knob, drip pan, furnace
The composition such as foot, air inlet pipe and pulse igniter (pulse firing mode kitchen range are dedicated).At work, combustion gas is from air inlet for gas-cooker
Pipe enters in stove, enters in burner by the adjusting (user is adjusted by knob) of gas valve, while mixing a part
Air (this partial air is referred to as primary air), these mixed gas spray from the fire hole of distributor while being ignited device
It lights to be formed flame (required air is referred to as auxiliary air when burning), these flames are used to heating and are placed on pan bracket
Cooker.
Traditional flame gas-cooker of originally lighting a fire have the shortcomings that adjust it is higher than low, flame instability, disposal of pollutants, give off NOx,
CO and unburned hydrocarbon (UHC), these emissions cause room air pollution, are harmful to the human body.And porous gas
Kitchen range have the features such as discharge of low pollution object, high power density, high reduction of speed ratio, strengthen burning stability.
Currently, widely used porous media mainly has foamed ceramics, wire mesh or single sphere.When solid is small
When ball is as filled media, porosity, thus flow resistance is larger, has relatively good heat storage capacity, is household combustion
The ideal material of gas stove.
Summary of the invention
For it is traditional originally light a fire flame gas-cooker the shortcomings that, the invention proposes a kind of porous medias based on sphere accumulation
Gas cooker to form multi-hole medium combustion region, while passing through building combustion zone stairstepping by the accumulation of sphere
The porosity of formula, the air-flow and temperature gradient steady for shape Heisei, increases combustion intensity, enhances the stability of flame, subtract
Lacked residence time of the gas in high-temperature region, reduced the discharge amount of nitrogen oxides and carbon monoxide, environmental protection with higher with
Economic benefit.
To achieve the goals above, the present invention provides a kind of porous-medium gas hot kitchen range based on sphere accumulation, feature
It is, including interior furnace chamber, outer furnace chamber, outer ejector pipe, interior ejector pipe, porous media filling bed body and igniter, wherein
The interior furnace chamber is sheathed on the inside of the outer furnace chamber, and the air inlet of the outer furnace chamber and the outer ejector pipe connect
It connects, the air inlet of the interior ejector pipe is connect with the interior ejector pipe；
Porous media filling bed body includes porous media packed bed outer ring and porous media packed bed inner ring, described more
Hole media filler bed outer ring includes the first support orifice plate, preheating zone and the first combustion zone being sequentially arranged in above the outer furnace chamber,
The porous media packed bed inner ring includes the second support orifice plate and the second combustion zone being sequentially arranged in above the interior furnace chamber, institute
It states preheating zone, the first combustion zone and the second combustion zone and is filled with the sphere for being used to form porous zone, wherein the hole of preheating zone
Gap rate is greater than the porosity of the first combustion zone, and the air-flow and temperature gradient steady for shape Heisei improve burn rate and efficiency, drop
The discharge amount of low NOx and carbon monoxide；
The igniter sequentially passes through the interior furnace chamber and the second combustion zone, for striking sparks.
Further, the sphere includes multiple the first spheres set on the preheating zone, is set to first combustion zone
The second sphere and third sphere set on second combustion zone.
Further, the porosity that the multiple first sphere is formed is 30%-40%, it is preferred that the multiple first
The porosity that sphere is formed is 35%；The porosity that the multiple second sphere is formed is 60%-70%, it is preferred that described more
The porosity that a second sphere is formed is 65%；The porosity that the multiple third sphere is formed is 30%-40%, it is preferred that
The porosity that the multiple first sphere is formed is 35%.
Further, the diameter of first sphere is 3mm-10mm, it is preferred that the diameter of first sphere is 6mm；
The diameter of second sphere is 5mm-15mm, it is preferred that the diameter of second sphere is 10mm；The third sphere it is straight
Diameter is 3mm-10mm, it is preferred that the diameter of the third sphere is 6mm.
Further, the cross-sectional area of the preheating zone is greater than the cross-sectional area of the outer furnace chamber.
Further, the upper surface of described first combustion zone is equipped with annular gland, and the annular gland is along first burning
The outer edge in area is arranged, is additionally provided with through-hole on the annular gland.
Further, the igniter includes body portion and the electric discharge being fixedly connected with body portion induction head, wherein body
Portion sequentially passes through the interior furnace chamber and the second combustion zone, and electric discharge induction head is set to the outside of second combustion zone.
Further, the sphere is one or more of copper ball, iron ball, Ceramic Balls.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
(1) present invention to form multi-hole medium combustion region, while passing through building combustion zone by the accumulation of sphere
The porosity of stepped-style, the air-flow and temperature gradient steady for shape Heisei, increases combustion intensity, enhances the stabilization of flame
Property, reduce residence time of the gas in high-temperature region, reduce the discharge amount of nitrogen oxides and carbon monoxide, so that kitchen range make
With more safe and reliable, environmental protection and economy benefit with higher.
(2) porosity (for 30%-40%) of preheating zone of the present invention is greater than the porosity of the first combustion zone (for 60%-
70%), the air-flow and temperature gradient steady for shape Heisei improve burn rate and efficiency, reduce nitrogen oxides and carbon monoxide
Discharge amount, meanwhile, increase and be also used to increase the flow velocity of combustion zone exit gas, avoid being tempered.
(3) present invention constructs the preheated zone of gas cooker and porous Jie of combustion zone by the sphere of multiple accumulations
Matter so that combustion zone temperature tends to uniformly, maintain stable temperature gradient rapidly, simultaneously because combustion zone porosity compared with
Greatly, there is biggish surface of solids product, thus heat storage capacity is stronger, enable combustion gas full combustion, and then reduce nitrogen oxides
With the discharge amount of carbon monoxide.
(4) cross-sectional area of preheating zone of the present invention is greater than the cross-sectional area of the outer furnace chamber, so that mixed gas
Body can flow to preheating zone faster, avoid being tempered.
(5) sphere of the present invention is one or more of copper ball, iron ball, Ceramic Balls, has relatively good heat storage capacity,
So that the partial heat that premixed combustion gas generates is transmitted to the low-temperature space of preheating zone from the high-temperature region of combustion zone, for preheating not
Mixed gas is fired, and then improves burn rate and promotes fuel completely burned, and then reduces the row of nitrogen oxides and carbon monoxide
High-volume.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the porous-medium gas hot kitchen range based on sphere accumulation of the present invention；
Fig. 2 is that a kind of porous media that the porous-medium gas hot kitchen range based on sphere accumulation are related to of the present invention fills bed body
Structural schematic diagram.
In all the appended drawings, identical appended drawing reference is used to indicate identical element, wherein 1- lights a fire inductive needle, outside 2-
Furnace chamber, furnace chamber in 3-, 4- porous media fill bed body, 5- annular gland, ejector pipe in 6-, the outer ejector pipe of 7-, 41- porous media
Packed bed outer ring, 42- porous media packed bed inner ring, 411- first support orifice plate, the preheating zone 412-, the combustion zone 413-, 421-
Second support orifice plate, the second combustion zone 422-.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
As depicted in figs. 1 and 2, wherein Fig. 1 is a kind of knot of the porous-medium gas hot kitchen range based on sphere accumulation of the present invention
Structure schematic diagram, Fig. 2 are that a kind of porous media that the porous-medium gas hot kitchen range based on sphere accumulation are related to of the present invention fills bed body
Structural schematic diagram, gas cooker of the invention include igniting inductive needle 1, outer furnace chamber 2, interior furnace chamber 3, porous media fill bed body
4, annular gland 5, interior ejector pipe 6, outer ejector pipe 7, porous media packed bed outer ring 41, porous media packed bed inner ring 42, the
One support orifice plate 411, preheating zone 412, the first combustion zone 413, second supports orifice plate 421, the second combustion zone 422.Combustion gas is from height
It presses nozzle to spray, drives surrounding air flowing, porous media packed bed body region is flowed into after being sufficiently mixed inside gas furnace, so
Electric spark is generated by by pulse igniter continuous discharge and in igniting inductive needle, gaseous mixture is lighted, can be adjusted by air door
The excess air coefficient of gaseous mixture, the lower part of preheating zone 412 are equipped with metal and support orifice plate 411, and the top of the first combustion zone 413 is set
There is dismountable annular gland 5, secure the sphere of accumulation, while keeping the combustion gas of outlet more uniform, annular gland 5 can be removed
Sphere inside replacement.Through-hole is additionally provided on the annular gland 5.
Specifically, being connect the inventive system comprises the outer ejector pipe 7 being connect with the outer furnace chamber 2 with interior furnace chamber 3
Interior ejector pipe 6,3 sets of the interior furnace chamber penetrate the outside in the outer furnace chamber 2, wherein (power is not less than under the conditions of high-power
1.5KW), outer ejector pipe 7 is opened simultaneously with interior ejector pipe 6, inputs combustion gas in outside furnace chamber 2 and interior furnace chamber 3 respectively, and roll up suction one
Secondary air enters premix in outer furnace chamber 2 and interior furnace chamber 3；Under the conditions of small-power, interior ejector pipe 6 is opened, input in inside furnace chamber 3
Combustion gas, and roll up and inhale primary air into premix in interior furnace chamber 3.
Porous media fills bed body 4 and includes porous media packed bed outer ring 41 and be set to outside the porous media packed bed
Porous media packed bed inner ring 42 inside ring 41, wherein the porous media packed bed inner ring 42 is set to the interior furnace chamber 3
Top, the porous media packed bed outer ring 41 are set to the top of the outer furnace chamber 2.The porous media packed bed outer ring 41 wraps
Include metal support orifice plate 411, preheating zone 412, the first combustion zone 413, wherein the first support orifice plate 411 is set to described outer
2 top of furnace chamber, the preheating zone 412 are set to the top of the first support orifice plate 411, and first combustion zone 413 is set to institute
State 412 top of preheating zone.Wherein, the first sphere is filled in the preheating zone 412, the diameter of first sphere is 3mm-
10mm, it is preferred that the diameter of first sphere is 6mm, is filled with the second sphere in first combustion zone 413, described the
The diameter of two spheres is 5mm-15mm, it is preferred that the diameter of second sphere is 10mm.The porous media packed bed inner ring
42 include the set on the second support orifice plate 421 on interior 3 top of furnace chamber and above the second support orifice plate 421
Two combustion zones 422, second combustion zone 422 is interior to be filled with third sphere, and the diameter of the third sphere is 3mm-
10mm, it is preferred that the diameter of the third sphere is 6mm.
Further, the invention also includes the igniting for passing through the interior furnace chamber 3 and the porous media packed bed inner ring 42
Inductive needle 1.The igniting inductive needle is pulsed igniting inductive needle.The igniter includes body portion and fixes company with the body portion
The electric discharge induction head connect, wherein body portion sequentially passes through the interior furnace chamber and the second combustion zone 422, and the electric discharge incudes head
It is set to the outside of second combustion zone 422.The cross-sectional area of the preheating zone 412 is greater than the cross section of the outer furnace chamber 2
Product.Further, in order to which the circulation area for reducing the outlet of the first combustion zone 413 is gone back in the top of first combustion zone 413
Equipped with annular gland 5.Preferably, the cross-sectional area of the preheating zone 412 is not less than the cross section of first combustion zone 413
Product.
Under the conditions of high-power (power is not less than 1.5KW), outer ejector pipe 7 is opened simultaneously with interior ejector pipe 6, outside respectively
Combustion gas is inputted in furnace chamber 2 and interior furnace chamber 3, and is rolled up suction primary air and entered premix in outer furnace chamber 2 and interior furnace chamber 3, the gas after premix
When body flows into preheating zone, flow area increases, and flow velocity decline helps to stablize combustion flame, achievees the purpose that anti-backfire, and works as
When combustion product flows into the first combustion zone, preheating zone filler porosity is 60%-70%, and circulation area reduces, and flow velocity increases,
Enhance heat convection effect, reduces exhaust gas temperature loss.Since the first combustion zone internal porosity is larger, help to support burning,
Improve ignition temperature.Meanwhile different void densities can be steep to avoid temperature gradient near flame front, temperature distributing disproportionation, office
The presence of portion high-temperature region, solves the problems, such as flame instability, keeps burning more abundant, and that realizes low-BTU gas stablizes burning.
Meanwhile sphere of the present invention is one or more of copper ball, iron ball, Ceramic Balls, has relatively good heat storage capacity, so that in advance
The partial heat that mixed gas burning generates is transmitted to the low-temperature space of preheating zone from the high-temperature region of combustion zone, for preheating unburned mixing
Gas, and then improve burn rate and promote fuel completely burned, and then reduce the discharge amount of nitrogen oxides and carbon monoxide.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (8)
1. it is a kind of based on sphere accumulation porous-medium gas hot kitchen range, which is characterized in that including interior furnace chamber (3), outer furnace chamber (2),
Outer ejector pipe (7), interior ejector pipe (6), porous media filling bed body (4) and igniter (1), wherein
The interior furnace chamber (3) is sheathed on the inside of the outer furnace chamber (2), the air inlet and the outer injection of the outer furnace chamber (2)
(7) connection is managed, the air inlet of the interior ejector pipe (6) is connect with the interior ejector pipe (6)；
Porous media filling bed body (4) includes porous media packed bed outer ring (41) and porous media packed bed inner ring
(42), the porous media packed bed outer ring (41) includes the first support orifice plate being sequentially arranged in above the outer furnace chamber (2)
(411), preheating zone (412) and the first combustion zone (413), the porous media packed bed inner ring (42) are described including being sequentially arranged in
The second support orifice plate (421) and the second combustion zone (422) above interior furnace chamber (3), the preheating zone (412), the first combustion zone
(413) and the second combustion zone (422) are filled with the sphere for being used to form porous zone, wherein the porosity of preheating zone (412)
Greater than the porosity of the first combustion zone (413), the air-flow and temperature gradient steady for shape Heisei improve burn rate and efficiency,
Reduce the discharge amount of nitrogen oxides and carbon monoxide；
The igniter (1) sequentially passes through the interior furnace chamber (3) and the second combustion zone (422), for striking sparks.
2. porous-medium gas hot kitchen range according to claim 1, which is characterized in that the sphere includes described in multiple be set to
First sphere of preheating zone (412), multiple the second spheres set on first combustion zone (413) and multiple it is set to described the
The third sphere of two combustion zones (422).
3. porous-medium gas hot kitchen range according to claim 2, which is characterized in that the hole that the multiple first sphere is formed
Gap rate is 30%-40%, it is preferred that the porosity that the multiple first sphere is formed is 35%；The multiple second spherical
At porosity be 60%-70%, it is preferred that the porosity that the multiple second sphere is formed is 65%；The multiple third
The porosity that sphere is formed is 30%-40%, it is preferred that the porosity that the multiple first sphere is formed is 35%.
4. porous-medium gas hot kitchen range according to claim 2 or 3, which is characterized in that the diameter of first sphere is
3mm-10mm, it is preferred that the diameter of first sphere is 6mm；The diameter of second sphere is 5mm-15mm, it is preferred that
The diameter of second sphere is 10mm；The diameter of the third sphere be 3mm-10mm, it is preferred that the third sphere it is straight
Diameter is 6mm.
5. porous-medium gas hot kitchen range according to claim 1-4, which is characterized in that the preheating zone (412)
Cross-sectional area be greater than the outer furnace chamber (2) cross-sectional area.
6. porous-medium gas hot kitchen range according to claim 1-5, which is characterized in that first combustion zone
The upper surface of (413) annular gland (5) are equipped with, are additionally provided with through-hole on the annular gland (5).
7. porous-medium gas hot kitchen range according to claim 1-6, which is characterized in that igniter (1) packet
Include body portion and the electric discharge being fixedly connected with body portion induction head, wherein body portion sequentially passes through the interior furnace chamber (3) and second
Combustion zone (422), electric discharge induction head are set to the outside of second combustion zone (422).
8. porous-medium gas hot kitchen range according to claim 1-7, which is characterized in that the sphere be copper ball,
One or more of iron ball, Ceramic Balls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143618.6A CN109945185A (en) | 2019-02-27 | 2019-02-27 | A kind of porous-medium gas hot kitchen range based on sphere accumulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143618.6A CN109945185A (en) | 2019-02-27 | 2019-02-27 | A kind of porous-medium gas hot kitchen range based on sphere accumulation |
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| CN109945185A true CN109945185A (en) | 2019-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910143618.6A Pending CN109945185A (en) | 2019-02-27 | 2019-02-27 | A kind of porous-medium gas hot kitchen range based on sphere accumulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425530A (en) * | 2019-07-10 | 2019-11-08 | 华帝股份有限公司 | Infrared burner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3322179A (en) * | 1963-04-09 | 1967-05-30 | Paul H Goodell | Fuel burner having porous matrix |
| US5306140A (en) * | 1976-04-07 | 1994-04-26 | Smith Thomas M | Infra-red generation |
| CN2913860Y (en) * | 2006-02-09 | 2007-06-20 | 董建华 | Single ceramic plate double-ring infrared combustor |
| CN103528062A (en) * | 2013-09-25 | 2014-01-22 | 杭州电子科技大学 | Combustion radiator of blast rotation pre-mixed porous medium gas stove and combustion method thereof |
| CN107355787A (en) * | 2017-08-13 | 2017-11-17 | 广州市红日燃具有限公司 | A kind of infrared burner |
| CN206919010U (en) * | 2017-05-19 | 2018-01-23 | 西南石油大学 | A kind of combined type catalytic burner |
-
2019
- 2019-02-27 CN CN201910143618.6A patent/CN109945185A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3322179A (en) * | 1963-04-09 | 1967-05-30 | Paul H Goodell | Fuel burner having porous matrix |
| US5306140A (en) * | 1976-04-07 | 1994-04-26 | Smith Thomas M | Infra-red generation |
| CN2913860Y (en) * | 2006-02-09 | 2007-06-20 | 董建华 | Single ceramic plate double-ring infrared combustor |
| CN103528062A (en) * | 2013-09-25 | 2014-01-22 | 杭州电子科技大学 | Combustion radiator of blast rotation pre-mixed porous medium gas stove and combustion method thereof |
| CN206919010U (en) * | 2017-05-19 | 2018-01-23 | 西南石油大学 | A kind of combined type catalytic burner |
| CN107355787A (en) * | 2017-08-13 | 2017-11-17 | 广州市红日燃具有限公司 | A kind of infrared burner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425530A (en) * | 2019-07-10 | 2019-11-08 | 华帝股份有限公司 | Infrared burner |
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Application publication date: 20190628 |
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