CN103363541B - Anoxia preventer nozzle od method performance is adjusted and controlled - Google Patents
Anoxia preventer nozzle od method performance is adjusted and controlled Download PDFInfo
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- CN103363541B CN103363541B CN201210095899.0A CN201210095899A CN103363541B CN 103363541 B CN103363541 B CN 103363541B CN 201210095899 A CN201210095899 A CN 201210095899A CN 103363541 B CN103363541 B CN 103363541B
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- nozzle
- induction tunnel
- gas
- air holes
- gas inlet
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Abstract
The present invention relates to a kind of anoxia preventer nozzle od method performance adjusted and controlled, the nozzle cage for gas inlet for mixing the induction tunnel of gas, lower end including upper end, induction tunnel is provided with air holes, induction tunnel lower end connects nozzle cage upper end, and nozzle cage upper end is provided with the gas inlet device for controlling gas inlet amount；The upper end of nozzle cage is outside is ledge structure, and the outside dimension of ledge structure is Φ, and shoulder height is h, and step matches on the air holes position of induction tunnel, and air holes is between bottom to the top of step, i.e. shoulder height h air holes aperture Φ F ＞ 0.This invention simplifies step and the method for ODS performance regulation and control, reduce ODS and purchase the cost of handling of goods and materials, production from former material, improve the consistency of performance of ODS simultaneously.
Description
Technical field
The present invention relates to a kind of anoxia preventer nozzle od for gas utensil security protection
Method performance is adjusted and controlled.
Background technology
Anoxia protection arrangement, also referred to as ODS (is two kinds typically as depicted in figs. 1 and 2
ODS), being widely used in indoor fuel gas tool, its concrete function is when gas utensil is in the indoor closed
During use, along with combustion gas is constantly burnt, indoor O2 constantly consumes, and produces human body simultaneously
The gases such as healthy unfavorable CO2, CO even having influence on body life safety, and ODS is by sensing sky
Each gas componant content in gas, and O2 content drop to that certain standard is interval or CO2,
When CO content rises to certain standard interval, ODS flame automatic distinguishing, send the control signal of telecommunication,
By the air-source shutoff of gas utensil, make gas utensil automatically die flame-out, reach to protect health peace
Full effect.Wherein, the gas duty gas percentage composition value such as O2, CO2, CO when ODS stops working,
Commonly referred to cut-off point.Conventional ODS is the same, has following basic structure (such as Fig. 1 and Fig. 2):
A. having thermocouple, thermocouple upper end is inductive head, in order to sense ODS's self
Flame combustion or OFF state, and produce electromotive force, by wire and joint, it is connected to gas utensil
Gas source on-off control device be usually electromagnetic valve.
B. having ignition electrode, fire maker is connected in wire electrode metal lower end, and is embedded in igniting
In the porcelain body of pin, ignition electrode porcelain body is fixed on ODS by riveting or other assembling mode and installs
On frame, ignition electrode porcelain body is by metal-insulator such as ignition electrode metal and installing racks, it is ensured that electricity during sparking
Spark flies out from wire electrode metal upper end, and wire electrode metal upper end, near ODS gas outlet, is beaten
Spark ignition ODS combustion gas is produced during fire.
C. there is induction tunnel, induction tunnel has one, two or more air holes, in order to control
Air inlet amount processed, its internal passage mixed with air conduction for combustion gas, lower end is typically provided with
Female thread, to be connected with gas inlet parts.
D. having nozzle cage, nozzle cage upper end is generally of pore, i.e. a gas inlet
Hole, wherein, pore can directly be processed on nozzle cage, it is also possible to is using rustless steel
Punch Deng material, make jet parts, then be pressed into inside nozzle cage upper end.Nozzle cage upper end
Coordinate injection tube structure, be typically provided with external screw thread etc. and can correct connect with induction tunnel with guarantee nozzle cage
Connect.Nozzle cage lower end generally arranges the attachment structure such as female thread or external screw thread, in order to connect combustion gas
Source of the gas.
E. there is installing rack, on the one hand in order to thermocouple, ignition electrode, induction tunnel etc. to be tied
Structure, by designing the fastening of relative position, on the other hand, it is provided that installing hole or other mounting structures, makes
ODS is easily installed on gas utensil.
The blowout protection function of ODS, it is critical only that himself flame can sense the sky of surrounding
The change of gas component content, and auto extinguishing in suitable constant interval, finally send control
Signal turns off source of the gas.The sensing extinction function of ODS, is determined by multiple factors: gas families,
Such as liquefied gas (LPG), natural gas (NG)；Enter the combustion gas in ODS hybrid channel and air
The air inflow of (oxygen), mixed effect；Flame is done by self-flare pin or other structure
Disturb situation；ODS installation site on gas utensil and surrounding volume air humidity, temperature after installing
The environment such as degree, flowing, and by impacts such as the power of the main fire of gas utensil and fired states.
According to current industry standard, including CE, CSA etc., ODS should have a following application performance:
1, it is prone to igniting, as double igniting should ensure that ODS lights a fire successfully, need to fit
Ambient temperature when answering it to use combustion gas air pressure and igniting；Wherein, air pressure is too high, ambient temperature
Too low, highlands anoxias etc., all can reduce its ignition quality；
2, should be blue or light blue without yellow self flame color of flame, i.e. ODS, Ying Wuhuang
Color, because yellow flame is unfavorable to outward appearance, performance；
3, flame size is suitable, flameholding, can light the main fire of gas utensil, and mild wind,
Slight vibration is not put out a fire, to guarantee normally to use.
4, stopping working, this is the most basic the most necessary function of blowout protection, by CSA in good time
Generally can should put out a fire in the 17%-20% content interval of O2 in industry, the strictest by CE standard
Requiring that CO2 content can be put out a fire when 0.8%-1.5% interval, meanwhile, CO not can exceed that 80ppm.
Current conventional ODS performance, generally by adjusting its air holes (air inflow openings), gas
The size in hole (gas inlet hole), control the air inflow of self air fuel gas and mixed proportion and
Effect, it is thus achieved that different cut-off points (performance), and for same combustion gas gas kind and specified gas
Pressure, mostly uses and is equipped with adjustment pore opening when adjusting air holes size small part to obtain difference
ODS self cut-off point during so that ODS is applied to different gas utensil and varying environment, finally
Gas utensil can in cut-off point standard interval blowout protection.Owing to air holes and pore generally set up separately
On different parts, being embodied in air holes on induction tunnel, pore is at nozzle (assembly)
On, and these different parts also to assemble, therefore, for ODS's together with other parts
For manufacturer, it is desirable to have a variety of different configuration of ODS (to provide different performance),
This is unfavorable for the buying of spare and accessory parts, management very much, is unfavorable for production and the adjustment of product, the present invention
I.e. study for this, propose a kind of new Properties Control mode, make for same combustion gas gas
Plant and under the conditions of specified gaseous-pressure, as long as the size changing nozzle is obtained with difference
The control model of performance, be beneficial to management and performance adjusted and set and stable and consistent controls, it is possible to because of
Kind reduces and reduces purchase cost.
Summary of the invention
It is an object of the invention to simplify step and the method for the regulation and control of ODS performance, reduce ODS
Purchase the cost of handling of goods and materials, production from former material, improve the consistency of performance of ODS simultaneously.
Present configuration is shown in Fig. 3-6, it is achieved takes different Φ value can obtain different ODS and puts out
Effect of fire point, its main points are following (each size default units is mm):
1. all structures of induction tunnel, especially include that air holes (air inflow openings) position is with big
Little Φ F etc., immobilize, nozzle assembly of working good when only need to design.
2. combustion gas gas kind (such as LPG), and nominal pressure when it uses are determined for certain
Under the conditions of (such as 3kPa), on nozzle, the size specification Φ P of pore (gas inlet hole) is constant,
When being all in first design, aperture and the margin of tolerance are determined, such as Φ 0.19, the margin of tolerance
0～0.01.
3. the upper end of nozzle cage should have the outside ledge structure for smooth circular, its outer diameter ruler
Very little for Φ, as shown in Figure 4.Be the screw thread being connected with induction tunnel below step, and step with draw
Penetrate and should match on the air holes position of pipe, it is ensured that air holes be in this step bottom to top it
Between, i.e. shoulder height h-air holes aperture Φ F ＞ 0, generally should take 0.5 ＜ h-Φ F ＜ 3, this model
Enclose too small, be unfavorable for product stability, excessive, waste raw material, increase cost.
4. the key control point of this structure is the size of Φ, i.e. by adjusting this size.
Because extraneous air is outside induction tunnel, the air holes Φ F on induction tunnel, then into
This external diameter is the space between the step of Φ and induction tunnel internal ring wall Φ YN, finally gets to
Air fuel gas mixed zone, and adjust the size of Φ, i.e. change step and induction tunnel internal ring wall it
Between the size of cross-sectional area, specially S=π/4 × (Φ YN2-Φ2), wherein Φ YN
For certain fixed value (such as value 7.4), and then control inlet and the speed of air, finally reach
To obtaining different air fuel gas mixed proportion and the effect of mixability, finally obtain different
The performances such as ODS cut-off point.The feature of this regulating effect is, cut-off point is (such as stopping working of CO2
Point) and Φ2Become approximate ratio relation, in the case of other physical dimension determines, by experiment
Its curve chart can be drawn, it is simple to set the occurrence of Φ for different application.
The regulation and control induction tunnel air inflow openings Φ F used in the industry with current line and gas inlet hole
The methods that the size of Φ P reaches identical regulation and control ODS performance are different, and the present invention provides
The another kind of highly efficient method being also more easy to production and processing and pattern.
Additionally, present disclosure applies equally to igniting and the blowout protections such as the ever-burning flame of self flame
Device, i.e. to hypoxia protection without being strict with, requires nothing more than without yellow flame easily igniting etc., can realize a little
The ODS of the i.e. flame-out function of dying of the combustion main fire of gas utensil.
In order to achieve the above object, the present invention is by the following technical solutions:
A kind of anoxia preventer nozzle od method performance is adjusted and controlled, including upper end for mixing
The induction tunnel of gas, the nozzle cage for gas inlet of lower end, induction tunnel is provided with air holes, draws
Penetrating pipe lower end and connect nozzle cage upper end, nozzle cage upper end is provided with the combustion for controlling gas inlet amount
Gas air intake installation；It is characterized in that: the upper end of nozzle cage is outside for ledge structure, ledge structure
Outside dimension be Φ, shoulder height is h, and step matches on the air holes position of induction tunnel,
Air holes is between bottom to the top of step, i.e. shoulder height h-air holes aperture Φ F ＞ 0.
Preferably, 0.5 ＜ h-Φ F ＜ 3.
Particularly, gas inlet device is gas inlet hole or the nozzle zero in band gas inlet hole
Part.
Further, nozzle cage is step-like, and it is outside that gas inlet hole is located at nozzle cage mid portion
Highlight.
Further, induction tunnel inner bottom is provided with female thread；Nozzle cage upper end is provided with external screw thread,
Screw with induction tunnel bottom female thread and be fastenedly connected.
Accompanying drawing explanation
Fig. 1 is common ODS system structure schematic diagram；
Fig. 2 is common ODS system structure schematic diagram；
Fig. 3 is induction tunnel sectional structure schematic diagram of the present invention；
Fig. 4 is nozzle cage sectional structure schematic diagram of the present invention；
Fig. 5 be Fig. 3 and Fig. 4 combine after sectional structure schematic diagram；
Fig. 6 is Fig. 5 partial structurtes enlarged diagram；
In figure: 1, the even head of sensing, 2, ignition electrode, 3, ignition electrode magnet, 4, air holes, 5, combustion
Gas air inlet, 6, induction tunnel, 7, nozzle cage, 8, flame, 9, step, 10, injection
Pipe female thread, 11, nozzle cage external screw thread, 12 wires, 13 installing racks.
Detailed description of the invention
Embodiment 1: 1-6 referring to the drawings,
The design philosophy invented according to this, it is embodied as structure can be as in figure 2 it is shown, set
Surely taking gas families is LPG, 3kPa, and other portion structure is common joining in can using industry
Put: mixed zone, upper end body element induction tunnel, lower end gas inlet parts nozzle cage.
Wherein, induction tunnel interior zone is female thread M8 × 0.75, bottom, and nozzle cage upper end is outward
Screw thread M8 × 0.75, screws fastening with induction tunnel bottom female thread, and lower end is external screw thread M10
× 1, it is connected with gas utensil blast tube, one band gas inlet hole of nozzle cage upper end riveting
Jet parts.
Methods according to the present invention and principle, as in figure 2 it is shown, can be concrete by it
Structure is set to:
1. two air holes sizes of induction tunnel are fixed, Φ F=3.0；
2. induction tunnel mixes the internal diameter of gas passage internal ring wall is Φ YN=7.4, and tolerance is desirable
-0.05～0；
3. nozzle cage upper end step height h=4mm；
4. nozzle cage upper end press-in steel cap, the gas inlet hole Φ P=0.19 on steel cap；
5. nozzle cage outer diameter of step Φ controllable application size range: Φ 3.5～Φ
5.5。
Wherein, to different gas kinds or pressure, the Φ value that optional difference regulation and control are interval, and add routinely
Work technique, the dimensional tolerance that can be readily available Φ is 0～0.03, according to (Φ 5.5-Φ 3.5)
/ 0.03 ≈ 70 calculates, and finally can obtain precision and reach the performance control accuracy of 70 increasing sequences
Scope.
Above-described embodiment is only for clearly demonstrating example of the present invention, and is not
Restriction to embodiments of the present invention.For those of ordinary skill in the field, exist
Can also make other changes in different forms on the basis of described above.Every belong to
What technical scheme was extended out obviously changes or changes still in the present invention
The row of protection domain.
Claims (4)
1. an anoxia preventer nozzle od method performance is adjusted and controlled, including upper end for mixing
The induction tunnel of gas, the nozzle cage for gas inlet of lower end, induction tunnel is provided with air holes, draws
Penetrating pipe lower end and connect nozzle cage upper end, nozzle cage upper end is provided with the combustion for controlling gas inlet amount
Gas air intake installation；It is characterized in that: the upper end of nozzle cage is outside for ledge structure, ledge structure
Outside dimension be Φ, shoulder height is h, and step matches on the air holes position of induction tunnel,
Air holes is between bottom to the top of step, i.e. shoulder height h-air holes aperture Φ F ＞ 0.
A kind of anoxia preventer nozzle od method performance regulation and control knot the most according to claim 1
Structure, it is characterised in that: 0.5mm ＜ h-Φ F ＜ 3mm.
A kind of anoxia preventer nozzle od method performance regulation and control knot the most according to claim 1
Structure, it is characterised in that: gas inlet device is gas inlet hole or the nozzle in band gas inlet hole
Part.
A kind of anoxia preventer nozzle od method performance regulation and control knot the most according to claim 1
Structure, it is characterised in that: induction tunnel inner bottom is provided with female thread；Nozzle cage upper end is provided with outer spiral shell
Stricture of vagina, screws with induction tunnel bottom female thread and is fastenedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095899.0A CN103363541B (en) | 2012-04-01 | 2012-04-01 | Anoxia preventer nozzle od method performance is adjusted and controlled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210095899.0A CN103363541B (en) | 2012-04-01 | 2012-04-01 | Anoxia preventer nozzle od method performance is adjusted and controlled |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103363541A CN103363541A (en) | 2013-10-23 |
| CN103363541B true CN103363541B (en) | 2016-07-27 |
Family
ID=49365480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210095899.0A Expired - Fee Related CN103363541B (en) | 2012-04-01 | 2012-04-01 | Anoxia preventer nozzle od method performance is adjusted and controlled |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990316B (en) * | 2017-12-29 | 2024-04-30 | 青岛海尔智慧厨房电器有限公司 | Gas stove burner and gas stove |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57207718A (en) * | 1981-06-16 | 1982-12-20 | Matsushita Electric Ind Co Ltd | Overall primary combustion device |
| CN2484501Y (en) * | 2001-05-16 | 2002-04-03 | 南京斯奥欣电气具有限公司 | Light-operated oxygen-lack protection apparatus |
| CN2901067Y (en) * | 2006-05-16 | 2007-05-16 | 南京普鲁卡姆电器有限公司 | Double gas source lack oxygen protection ignitor |
| CN201028526Y (en) * | 2007-04-04 | 2008-02-27 | 高永� | Oxygen-deficiency protecting equipment |
| CN102252351B (en) * | 2011-01-13 | 2013-07-31 | 长兴奔能燃具有限公司 | Oxygen deficiency protection device |
| CN203099915U (en) * | 2012-04-01 | 2013-07-31 | 宁波比利仕燃器科技有限公司 | Performance control structure of oxygen depletion safety shutoff system based on nozzle outer diameter method |
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2012
- 2012-04-01 CN CN201210095899.0A patent/CN103363541B/en not_active Expired - Fee Related
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| CN103363541A (en) | 2013-10-23 |
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Granted publication date: 20160727 Termination date: 20180401 |