CN104235889A - Gas stove - Google Patents
Gas stove Download PDFInfo
- Publication number
- CN104235889A CN104235889A CN201310234278.0A CN201310234278A CN104235889A CN 104235889 A CN104235889 A CN 104235889A CN 201310234278 A CN201310234278 A CN 201310234278A CN 104235889 A CN104235889 A CN 104235889A
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- Prior art keywords
- fire hole
- gas
- thermocouple
- cooker
- firing tip
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Abstract
A gas stove comprises an igniting electrode, a thermocouple and an igniting hole, the igniting electrode strikes sparks in the direction facing to the thermocouple, and electric sparks are formed between the igniting electrode and the thermocouple and ignites combustion gas ejected from the igniting hole. The gas stove utilizes the thermocouple used for flame-out protection for igniting and is ingenious in conception.
Description
[technical field]
The present invention relates to a kind of gas-cooker, particularly relate to a kind of dependency structure of igniting of gas-cooker.
[background technology]
Existing gas-cooker adopts the mode of ignition electrode energising sparking to light combustion gas mostly, the sparking direction of ignition electrode is all generally towards the fire hole of gas-cooker, during igniting, the end of the ignitor of ignition electrode produces moment high potential, puncture with fire hole near intermetallic air and form electric spark, thus light self-ignition hole ejection combustion gas.But existing sparking mode, ignitor is struck sparks towards fire hole, and combustion gas has just been flowed out from fire hole, is not also able to do in time fully to mix with air, causes gas ratio in combustion mixture too high, is unfavorable for sparking.And, the ignition electrode of this sparking mode is arranged on the vicinity of fire hole and will faces toward fire hole, when lighting a fire successfully, gas-cooker is when normally working, often ignition electrode is burnt from the flame of fire hole ejection, especially be coated on the insulating ceramics shell outside ignitor, the process through high temperature sintering, cooling frequently easily causes ceramic package to break, and shortens the life-span of ignition electrode.
Unless there are the evidence support of abundance, otherwise prior art described here not meaning that admits that the those of ordinary skill of these prior aries for the field that the invention relates to before the applying date of the application is known.
[summary of the invention]
Main purpose of the present invention is, the ignition structure for existing gas-cooker carries out improving and provides a kind of new gas-cooker.
The present invention solves above-mentioned technical problem by the following technical programs: a kind of gas-cooker, comprise: ignitor, thermocouple and fire hole, described ignitor is struck sparks towards described thermocouple, forms the combustion gas that spark ignition sprays from described fire hole between described ignitor and described thermocouple.The ceramic shell of wrap insulate understood outward by general ignitor, easily causes ceramic shell broken through long-term high temperature sintering, causes the electric discharge position of ignitor to change and loss of ignition.Ignitor of the present invention is struck sparks towards fire hole unlike prior art, but towards thermocouple sparking, again by spark ignition after combustion gas fully can mix with air after fire hole outflow, is conducive to successful ignition.Thermocouple of the present invention is used for blowout protection on the one hand, and after flame burns thermocouple, can produce induced electromotive force and as the signal controlling to open gas source, work as fray-out of flame, electromotive force reduces rapidly, gas source is closed.Thermocouple is made up of metal material and is finally contacted with burner, and when not having flame to spray, thermocouple is grounded.Simultaneously; the present invention utilizes the thermocouple being used for blowout protection to light a fire; be skillfully constructed; also there is another benefit: thermocouple is made up of metal materials such as copper; impact strength is higher than ignitor and the ceramic shell that is wrapped in outside ignitor; thermocouple from ignitor very close to, external force from thermocouple side can be kept out to the shock of ignitor.
Optionally, the bearing of trend of described fire hole is crossing with described thermocouple." bearing of trend of described fire hole is crossing with described thermocouple " is interpreted as intersecting along the aperture of fire hole toward the bearing of trend of space outerpace and thermocouple, bearing of trend can not narrowly be interpreted as straight line direction, and be interpreted as along fire hole outward in the three-dimensional bearing of trend of a column.Light a fire successfully, the flame that fire hole place is formed is roughly spray along the bearing of trend of fire hole.Like this, ensure that from the flame of fire hole ejection and can burn thermocouple, make thermocouple produce induced electromotive force, for the blowout protection of gas-cooker." thermocouple " described here is construed as position thermocouple with inducing function, but not other positions of thermocouple.
Optionally, described ignitor comprises firing tip, and described thermocouple comprises electric discharge earth terminal, and described electric spark is formed between described firing tip and described electric discharge earth terminal; Orthographic projection part on the straight line that described fire hole defines in described firing tip and described electric discharge earth terminal is between described firing tip and described electric discharge earth terminal.Because electric spark is formed between firing tip and electric discharge earth terminal, like this, meet electric spark between fire hole ejection combustion gas part crossing point fire end and electric discharge earth terminal, thus ignited.
Optionally, described fire hole comprises the first fire hole and second point fire hole, and the bearing of trend of described first fire hole is crossing with described thermocouple.Because thermocouple of the present invention is also for blowout protection, when gas-cooker works, the flame of gas-cooker needs to burn thermocouple to produce induced electromotive force, otherwise gas-cooker can stop working.Therefore, the bearing of trend that the present invention designs the first fire hole is crossing with described thermocouple, and like this, can burn thermocouple from the flame of the first fire hole ejection, thermocouple can produce induced electromotive force, for the blowout protection of gas-cooker.
Optionally, the orthographic projection on the straight line that defines in described firing tip and described electric discharge earth terminal of described second point fire hole is between described firing tip and described electric discharge earth terminal.Ignitor is generally coated with the insulation shells such as pottery outward, and the end be exposed at outside insulation shell is firing tip.Electric discharge earth terminal is the position near firing tip on thermocouple.Produce moment high potential at firing tip after ignitor energising to puncture and namely metal that it is nearest discharges the air between earth terminal and form electric spark, from running into electric spark between the combustion gas crossing point fire end of the ejection of fire hole and electric discharge earth terminal, be easy to be ignited.And light a fire successfully, gas-cooker operationally, from the ceramic shell that the flame of fire hole ejection can not burn ignitor and be wrapped in ignitor, is conducive to extending its life-span.
Optionally, described gas-cooker comprises ignition electrode, and described ignition electrode comprises described ignitor and the ceramic shell be wrapped in outside described ignitor, and the top of described ceramic shell has the groove of lateral openings, and the opening direction of described groove is towards described thermocouple.Because ceramic shell surrounds ignitor, the groove of lateral openings is only provided with at ceramic shell top, make the sparking direction of ignition electrode can by be limited to accurately the opening of groove towards orientation, in other words, only can discharge towards the direction of thermocouple after ignition electrode energising, improve the accuracy of igniting.
Optionally, described ignitor has bending end, and the end of described bending end is arranged at outwardly in described groove.Thus, the sparking direction of ignitor can by be limited to more accurately the end of bending end towards direction, firing tip can be realized and form electric spark between towards the electric discharge of electric discharge earth terminal.
Optionally, described gas-cooker comprises burner and is arranged at the burner below described burner, the burner base that described burner comprises the interior ring fire cover being provided with inner ring fire hole, the external ring fire cover being provided with outer shroud fire hole and is arranged at below described interior ring fire cover and described external ring fire cover, described fire hole is arranged on the sidewall of described burner base.Existing burner can be utilized, improve ignition electrode and thermocouple, and without the need to improving other structures.
Optionally, one of them of described ignition electrode and described burner comprises positioning convex, wherein another of described ignition electrode and described burner comprises detent, and described ignition electrode is fixed on described burner with described coordinating of detent by described positioning convex.Design like this, ensure that ignition electrode installation site is unique, can not rotate and cause sparking direction change and finally cause loss of ignition.
Optionally, described burner base comprises to be provided the inner ring mixing chamber of combustion gas for described inner ring fire hole and described fire hole and provides the outer shroud mixing chamber of combustion gas for described outer shroud fire hole, and described fire hole is arranged on the sidewall of described inner ring mixing chamber; Described firing tip is D1 to the distance of described electric discharge earth terminal, described firing tip is D2 to the distance of described inner ring mixing chamber, described firing tip to the distance of described external ring fire cover is D3, and described D1, D2, D3 meet following relation: D1 < D2 and D1 < D3.The distance of described electric discharge earth terminal " the described firing tip to " do not refer to the center of firing tip to electric discharge earth terminal center between distance, but be interpreted as the minimum distance between the center of the end face of firing tip to electric discharge earth terminal profile.Similarly, " described firing tip is to the distance of described inner ring mixing chamber " is interpreted as the minimum distance between the center of the end face of firing tip to inner ring mixing chamber profile." described firing tip is to the distance of described external ring fire cover " is interpreted as the minimum distance between the center of the end face of firing tip to external ring fire cover profile.Only can puncture the air between the metal that it is nearest due to firing tip and form electric spark, therefore, D1 < D2 and D1 < D3 ensure that electric spark is only formed between firing tip and electric discharge earth terminal.
[accompanying drawing explanation]
Fig. 1 is the stereogram of gas-cooker when burner is unassembled of one embodiment of the invention;
Fig. 2 is the top view of the gas-cooker of one embodiment of the invention;
Fig. 3 is the stereogram of the gas-cooker of another embodiment of the present invention.
Explanation about Reference numeral in figure:
1-gas-cooker; 3-burner; 5-burner; 10-ignition electrode; Ring fire cover in 31-; 32-external ring fire cover; 34-inner ring mixing chamber; 50-detent; 100-ignitor; 101-bending end; 120-ceramic shell; 121-groove; 130-positioning convex; 200-thermocouple; 300-fire hole; 301-first fire hole; 302-second point fire hole; 310-inner ring fire hole; 320-outer shroud fire hole; 341-side protuberance; 100a-firing tip; 200a-discharges earth terminal.
[detailed description of the invention]
For making there is further understanding to object of the present invention, structure, feature and function thereof, embodiment is hereby coordinated to be described in detail as follows.
Please refer to Fig. 1 to Fig. 3, Fig. 1 is the stereogram of gas-cooker when burner is unassembled of one embodiment of the invention; Fig. 2 is the top view of the gas-cooker of one embodiment of the invention; Fig. 3 is the stereogram of the gas-cooker of another embodiment of the present invention.Gas-cooker 1 of the present invention comprises: ignitor 100, thermocouple 200 and fire hole 300.Ignitor 100 is struck sparks towards thermocouple 200, forms the combustion gas that spark ignition sprays from fire hole 300 between ignitor 100 and thermocouple 200.Ignitor not towards fire hole sparking, but towards thermocouple sparking, again by spark ignition after combustion gas fully can mix with air after fire hole outflow, is conducive to successful ignition.Light a fire successfully, when gas-cooker works, from the ceramic shell that the flame of fire hole 300 ejection can not burn ignitor 100 and be wrapped in ignitor, be conducive to extending its life-span.In addition, the ignitor of prior art is struck sparks towards fire hole, forms electric spark between the metal near ignitor and fire hole.But burner initial temperature is large compared with low and volume, and thus the heat radiation of burner to initial flame center is excessive, so that flame propagation velocity is slow, thus reduces sparking speed.Thermocouple of the present invention has tip, and size is little, little to the heat radiation at initial flame center, is conducive to sparking, and sparking speed is faster.
Gas-cooker 1 comprises burner 3 and is arranged at the burner 5 below burner 3.Burner 3 comprises the interior ring fire cover 31 being provided with inner ring fire hole 310, the external ring fire cover 32 being provided with outer shroud fire hole 320 and is arranged at the burner base below interior ring fire cover 31 and external ring fire cover 32, and fire hole 300 is arranged on the sidewall of burner base.Burner base comprises further to be provided the inner ring mixing chamber 34 of combustion gas for inner ring fire hole 310 and fire hole 300 and provides the outer shroud mixing chamber (not shown) of combustion gas for outer shroud fire hole 320.In one embodiment of the invention, fire hole 300 is arranged on the side protuberance 341 of inner ring mixing chamber 34.
In one embodiment of the invention, gas-cooker 1 comprises ignition electrode 10, ignition electrode 10 comprises aforesaid ignitor 100 and the ceramic shell 120 be wrapped in outside ignitor 100, and the top of ceramic shell 120 has the groove 121 of lateral openings, and the opening direction of groove 121 is towards thermocouple 200.In one embodiment of the invention, ignitor 100 has bending end 101, and the end of bending end 101 is arranged at outwardly in groove 121.Please refer to Fig. 1, in one embodiment of the invention, ignition electrode 10 comprises positioning convex 130, and burner 5 has detent 50, and ignition electrode 10 is fixed on burner 5 with coordinating of detent 50 by positioning convex 130.Certainly, ignition electrode is arranged and detent, burner arrange this scheme of positioning convex also should be included in scope.
Please refer to Fig. 2 and Fig. 3, the bearing of trend of fire hole 300 of the present invention is crossing with thermocouple 200, so that when gas-cooker 1 works, the flame sprayed from fire hole 300 can burn thermocouple 200.Ignitor 100 comprises firing tip 100a, i.e. the end of the bending end 101 of the present embodiment.Thermocouple 200 comprises electric discharge earth terminal 200a, i.e. the position towards firing tip 100a at thermocouple 200 top of the present embodiment.Electric spark is formed between firing tip 100a and electric discharge earth terminal 200a, roughly curved.Orthographic projection part on the straight line that fire hole 300 defines in firing tip 100a and electric discharge earth terminal 200a is between 100a firing tip and electric discharge earth terminal 200a.Like this, the combustion gas part sprayed from fire hole 300 is passed between firing tip 100a and electric discharge earth terminal 200a, can run into the electric spark formed between firing tip 100a and electric discharge earth terminal 200a, thus be lighted.Light a fire successfully, the flame sprayed from fire hole 300 can burn thermocouple 200 again, for the blowout protection of gas-cooker 1.
Please refer to Fig. 3, in another embodiment of the present invention, fire hole 300 comprises the first fire hole 301 and second point fire hole 302.Wherein, the bearing of trend of the first fire hole 300 is crossing with thermocouple 200.Orthographic projection on the straight line that second point fire hole 300 defines in firing tip 100a and electric discharge earth terminal 200a is between firing tip 100a and electric discharge earth terminal 200a.Like this, having further benefit is, the first fire hole 301 divides the work clearly, not interfere with each other with second point fire hole 302.When gas-cooker works, because the bearing of trend of the first fire hole 301 is crossing with thermocouple 200, the flame sprayed from the first fire hole 301 can burn thermocouple 200, makes thermocouple produce induced electromotive force, for the blowout protection of gas-cooker.And the orthographic projection on the straight line that second point fire hole 300 defines in firing tip 100a and electric discharge earth terminal 200a is between firing tip 100a and electric discharge earth terminal 200a, the flame that second point fire hole 302 is sprayed passes between firing tip 100a and electric discharge earth terminal 200a, contact with firing tip 100a and the electric spark produced between earth terminal 200a that discharges thus ignited, for gas combustion range ignition.And, the stop of thermocouple 200 can not be subject to from the combustion gas of second point fire hole 302 ejection, be conducive to successful ignition.The thermocouple 200 of the present embodiment is made up of copper and other particulate metal materials, and contacts with burner, and when the induction head of thermocouple is not burnt by flame, induced electromotive force is zero, can provide electric discharge earth terminal and for igniting.
Electric spark is formed because firing tip 100a can puncture the intermetallic air nearest with it, for ensureing ignitor 100 only to electric discharge earth terminal 200a electric discharge, the distance between firing tip 100a and electric discharge earth terminal 200a must be less than firing tip 100a and other intermetallic distances.Ignitor 100 of the present invention is arranged between interior ring fire cover 31 and external ring fire cover 32, fire hole 300 arranges on the side protuberance 341 of the inner ring mixing chamber 34 of burner base 30, and therefore inner ring mixing chamber 34 is nearer than the distance of interior ring fire cover 31 to firing tip 100a.And the inner edge of external ring fire cover 32 protrudes from outer shroud mixing chamber, therefore external ring fire cover 32 is nearer to the distance of firing tip 100a than outer shroud mixing chamber.As shown in Figure 2, firing tip 100a is D1 to the distance of electric discharge earth terminal 200a.Obviously, D1 refers to the minimum distance of firing tip 100a to electric discharge earth terminal 200a.Firing tip 100a is D2 to the distance of inner ring mixing chamber 34, firing tip 100a is D3 to the distance of external ring fire cover 32, D2, D3 and D1 are similar, also refer to corresponding minimum distance, and D1, D2, D3 meet following relation: D1 < D2 and D1 < D3.The concrete span of D1, D2, D3 is: 3mm≤D1≤5mm; D2 > 5mm; D3 > 5mm, this span can ensure successfully to light a fire fast, and in lighting a fire successfully, can burn thermocouple, play the effect of blowout protection from the flame of fire hole ejection.
The present invention is described by above-mentioned related embodiment, but above-described embodiment is only enforcement example of the present invention.Must it is noted that the embodiment disclosed limit the scope of the invention.On the contrary, change done without departing from the spirit and scope of the present invention and retouching, all belong to scope of patent protection of the present invention.
Claims (10)
1. a gas-cooker (1), comprising: ignitor (100), thermocouple (200) and fire hole (300), is characterized in that,
Described ignitor (100), towards described thermocouple (200) sparking, forms the combustion gas that spark ignition sprays from described fire hole (300) between described ignitor (100) and described thermocouple (200).
2. gas-cooker (1) as claimed in claim 1, it is characterized in that, the bearing of trend of described fire hole (300) is crossing with described thermocouple (200).
3. gas-cooker (1) as claimed in claim 2, it is characterized in that, described ignitor (100) comprises firing tip (100a), described thermocouple (200) comprises electric discharge earth terminal (200a), and described electric spark is formed between described firing tip (100a) and described electric discharge earth terminal (200a); Orthographic projection part on the straight line that described fire hole (300) defines in described firing tip (100a) and described electric discharge earth terminal (200a) is positioned between described firing tip (100a) and described electric discharge earth terminal (200a).
4. gas-cooker (1) as claimed in claim 3, it is characterized in that, described fire hole (300) comprises the first fire hole (301) and second point fire hole (302), and the bearing of trend of described first fire hole (301) is crossing with described thermocouple (200).
5. gas-cooker (1) as claimed in claim 4, it is characterized in that, the orthographic projection on the straight line that described second point fire hole (302) defines in described firing tip (100a) and described electric discharge earth terminal (200a) is positioned between described firing tip (100a) and described electric discharge earth terminal (200a).
6. the gas-cooker (1) according to any one of claim 3-5, it is characterized in that, comprise ignition electrode (10), described ignition electrode (10) comprises described ignitor (100) and is wrapped in described ignitor (100) ceramic shell outward (120), the top of described ceramic shell (120) has the groove (121) of lateral openings, and the opening direction of described groove (121) is towards described thermocouple (200).
7. gas-cooker (1) as claimed in claim 6, it is characterized in that, described ignitor (100) has bending end (101), and the end of described bending end (101) is arranged at outwardly in described groove (121).
8. gas-cooker (1) as claimed in claim 6, it is characterized in that, comprise burner (3) and be arranged at the burner (5) of described burner (3) below, described burner (3) comprises the interior ring fire cover (31) being provided with inner ring fire hole (310), the external ring fire cover (32) being provided with outer shroud fire hole (320) and is arranged at the burner base of described interior ring fire cover (31) and described external ring fire cover (32) below, and described fire hole (300) is arranged on the sidewall of described burner base.
9. gas-cooker (1) as claimed in claim 8, it is characterized in that, described ignition electrode (10) comprises positioning convex (130) with one of them of described burner (5), wherein another of described ignition electrode (10) and described burner (5) comprises detent (50), and described ignition electrode (10) was fixed on described burner (5) by described positioning convex (130) and coordinating of described detent (50).
10. gas-cooker (1) as claimed in claim 8, it is characterized in that, described burner base comprises to be provided the inner ring mixing chamber (34) of combustion gas for described inner ring fire hole (310) and described fire hole (300) and provides the outer shroud mixing chamber of combustion gas for described outer shroud fire hole (320), and described fire hole (300) is arranged on described inner ring mixing chamber (34); Described firing tip (100a) is D1 to the distance of described electric discharge earth terminal (200a), described firing tip (100a) is D2 to the distance of described inner ring mixing chamber (34), described firing tip (100a) to the distance of described external ring fire cover (32) is D3, and described D1, D2, D3 meet following relation: D1 < D2 and D1 < D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234278.0A CN104235889B (en) | 2013-06-13 | 2013-06-13 | Gas-cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310234278.0A CN104235889B (en) | 2013-06-13 | 2013-06-13 | Gas-cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235889A true CN104235889A (en) | 2014-12-24 |
| CN104235889B CN104235889B (en) | 2017-12-08 |
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ID=52224488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310234278.0A Active CN104235889B (en) | 2013-06-13 | 2013-06-13 | Gas-cooker |
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| Country | Link |
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| CN (1) | CN104235889B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671722A (en) * | 2018-07-03 | 2020-01-10 | 博西华电器（江苏）有限公司 | Gas stove and ignition device thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3034572A (en) * | 1958-07-23 | 1962-05-15 | Lewis R Kinsey | Lifeguard pilot light for range tops |
| US6173709B1 (en) * | 1999-09-17 | 2001-01-16 | Snow Peak, Inc. | Portable gas cooking stove |
| CN2911464Y (en) * | 2006-05-16 | 2007-06-13 | 宝应县电子陶瓷厂 | Ignition electrode II |
| CN201706552U (en) * | 2010-01-06 | 2011-01-12 | 林美玲 | Rapid ignition structure with gas safety switch for main fire ignition |
| CN202485054U (en) * | 2012-02-08 | 2012-10-10 | 扬州市飞鹰电子科技有限公司 | Silicon nitride-type hypoxia protection device |
| CN202757157U (en) * | 2012-06-26 | 2013-02-27 | 宁波市比利仕燃器科技有限公司 | Hypoxia protection device performance control system suitable for various gas types and gas pressures |
-
2013
- 2013-06-13 CN CN201310234278.0A patent/CN104235889B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3034572A (en) * | 1958-07-23 | 1962-05-15 | Lewis R Kinsey | Lifeguard pilot light for range tops |
| US6173709B1 (en) * | 1999-09-17 | 2001-01-16 | Snow Peak, Inc. | Portable gas cooking stove |
| CN2911464Y (en) * | 2006-05-16 | 2007-06-13 | 宝应县电子陶瓷厂 | Ignition electrode II |
| CN201706552U (en) * | 2010-01-06 | 2011-01-12 | 林美玲 | Rapid ignition structure with gas safety switch for main fire ignition |
| CN202485054U (en) * | 2012-02-08 | 2012-10-10 | 扬州市飞鹰电子科技有限公司 | Silicon nitride-type hypoxia protection device |
| CN202757157U (en) * | 2012-06-26 | 2013-02-27 | 宁波市比利仕燃器科技有限公司 | Hypoxia protection device performance control system suitable for various gas types and gas pressures |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671722A (en) * | 2018-07-03 | 2020-01-10 | 博西华电器（江苏）有限公司 | Gas stove and ignition device thereof |
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| Publication number | Publication date |
|---|---|
| CN104235889B (en) | 2017-12-08 |
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