CN109253031A - A kind of plasma igniter with air inlet and hollow vent anode - Google Patents
A kind of plasma igniter with air inlet and hollow vent anode Download PDFInfo
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- CN109253031A CN109253031A CN201811272971.6A CN201811272971A CN109253031A CN 109253031 A CN109253031 A CN 109253031A CN 201811272971 A CN201811272971 A CN 201811272971A CN 109253031 A CN109253031 A CN 109253031A
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- 238000009413 insulation Methods 0.000 claims abstract description 42
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000446 fuel Substances 0.000 abstract description 51
- 230000000694 effects Effects 0.000 abstract description 20
- 239000008246 gaseous mixture Substances 0.000 abstract description 13
- 239000000203 mixture Substances 0.000 abstract description 9
- 230000002411 adverse Effects 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 238000000034 method Methods 0.000 description 13
- 239000007789 gas Substances 0.000 description 12
- 230000004888 barrier function Effects 0.000 description 11
- 238000010891 electric arc Methods 0.000 description 10
- 230000009257 reactivity Effects 0.000 description 10
- 239000003345 natural gas Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 239000003574 free electron Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/48—Generating plasma using an arc
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Spark Plugs (AREA)
Abstract
The invention discloses a kind of plasma igniter with air inlet and hollow vent anode, including Anodic, the lower anode, anodized insulation set being located in grounding electrode, the anodized insulation is set on the top of grounding electrode, the Anodic is embedded in the wall body of anodized insulation set, and one end of the lower anode is put in the mounting hole of anodized insulation set；The anodized insulation set includes groove a, groove b and the groove c being sequentially connected from top to bottom；The lower anode includes be connected boss a, boss b, boss c and platform, and the boss a is located in groove a, and boss b is located in groove b, and boss c is located in groove c, and platform is located at the lower part of grounding electrode；Since the fuel for igniting is passed through by fuel inlet, some another air and fuel mixture enters ionization space b through spout adverse current, and the gaseous mixture for being accordingly used in igniting is integrally in rich, can be further ensured that the effect that igniting is ignited.
Description
Technical field
The present invention relates to a kind of plasma igniter, it is specifically a kind of with air inlet and hollow vent anode etc.
Gas ions igniter.
Background technique
Natural gas is used as engine fuel as a kind of clean energy resource extensively.In power train in vehicle application field, it is with CNG
The passenger car and load-carrying vehicle of fuel are increasing；In ship power field, CNG and LNG powered ship has become " made in China
Focus on research direction in 2025 " planning.Compared with gasoline, the natural gas as gaseous fuel needs bigger ignition energy,
This causes to be difficult with single spark ignitor natural gas the natural gas used for automobile engine of small cylinder diameter in actual use, because
This makes engine work by the way of having to ignite or be arranged using other fuel precombustion chamber.Which results in system complex,
A series of problems, such as cost raising, reliability decrease.Therefore, it is necessary to take novel ignition technology, using relatively simple knot
Structure realizes the efficient igniting and burning of natural gas, so that natural gas engine is stablized under single-fuel mode, reliable work
Make.
Traditional engine spark plug configuration as shown in Figure 1, in structure generally by a central electrode and with its distance
Closer one or several lateral electrode compositions.When work, ignition coil is the power supply of center electrode, and voltage is up to ten thousand volts of 1.5-2.?
Under High Pressure Difference between contre electrode and lateral electrode, gas is breakdown, shape in the small space between central electrode and lateral electrode
At high temperature discharge channel, igniting and burning start.
The shortcomings that prior art are as follows: (1) existing spark plug easily leads to ignition energy utilization rate often with very high temperature rise
It is low and influence electrode life；(2) ignition range is only located at the small space between central electrode and lateral electrode, is applied to large-diameter
Engine or when being not easy fuel (such as natural gas) lighted, igniting less reliable is easily led to since ignition energy is too small.
Summary of the invention
For solve existing thermal equilibrium plasma igniter technical solution applied on the engine of large space burning room and
Ignition energy is small when applying on natural gas engine, igniting poor reliability, the problems such as ignition energy utilization rate is low, and the application provides
A kind of plasma igniter with air inlet and hollow vent anode.
To achieve the above object, the technical solution of the application are as follows: it is a kind of with air inlet and hollow vent anode etc. from
Daughter igniter, including Anodic, the lower anode, anodized insulation set being located in grounding electrode, the anodized insulation is set on
The top of grounding electrode, the Anodic are embedded in the wall body of anodized insulation set, and it is exhausted that one end of the lower anode puts in anode
In the mounting hole of edge set；Anodized insulation set includes groove a, the groove b being sequentially connected from top to bottom and groove c, described recessed
Slot a, groove b are connected with groove c；The lower anode includes be connected boss a, boss b, boss c and platform, the boss a
In groove a, boss b is located in groove b, and boss c is located in groove c, and platform is located at the lower part of grounding electrode；
An ionization space a is formed between the part recess a and grounding electrode of the anodized insulation set, anodized insulation covers recessed
Isolated area is formed between slot c and grounding electrode, and ionization space b, the ionization are formed between the platform and grounding electrode of lower anode
Space a, isolated area are connected with ionization space b；The lower anode has hollow structure, and the hollow structure is air duct；
The upper one end of grounding electrode is provided with air inlet a, air inlet a is connected with ionization space a.
Further, the application further includes air inlet b.
Further, the air inlet b is located at the top other end of grounding electrode, and air inlet b is connected with ionization space a
It is logical.
Further, the air inlet b is located at the lower end thereof of grounding electrode, and is obliquely installed, air inlet b and electricity
It is connected from space b.
Further, the application further includes fixing bolt, for the phase between dead earth electrode and anodized insulation set
To position.
Further, ionization space b further includes lower anode bottom space.
As positioning mode further, that the grounding electrode lower part is used to install the plasma igniter equipped with one
It is blue.
As positioning mode further, that the grounding electrode top is used to install the plasma igniter equipped with one
It is blue.
The present invention due to using the technology described above, can obtain following technical effect:
1. this programme uses dielectric barrier discharge-arc discharge combined discharge mode, can be by nonequilibrium plasma
Lean flammability limit is wide, reactivity is big and the advantages such as the operating air pressure height of thermal equilibrium plasma combine, reach in width
The purpose of high energy, stable ignition is realized within the scope of wide fuel air ratio；
2. not needing the indoor mixing of main burning moreover, because the fuel and air for igniting are passed through by air inlet
Gas is flow backwards, therefore can be according to ignition conditions using air (or fuel) of the control through air inlet a and the fuel through air inlet b
The method control of (or air) flow is located at the equivalent proportion of gaseous mixture in ionization space b, and reaching improves ionization according to actual condition
And the purpose of ignition results；Since the fuel for igniting is passed through by fuel inlet, another some air and fuel mixture warp
Spout adverse current enters ionization space b, and the gaseous mixture for being accordingly used in igniting is integrally in rich, can be further ensured that igniting is ignited
Effect；
3. the air sprayed in air (or fuel) and lower anode that simultaneously, air inlet b is sprayed into will also play anode
Cooling effect can be played the role of extending electrode life.
Detailed description of the invention
Fig. 1 is engine spark plug configuration schematic diagram traditional in background technique；
Fig. 2 is the structural schematic diagram of embodiment 1；
Fig. 3 is the structural schematic diagram of embodiment 2；
Fig. 4 is the structural schematic diagram of embodiment 3；
Fig. 5 is ignition control strategy figure when embodiment 1-3 igniter is applied to internal combustion engine；
Fig. 6 is ignition control strategy figure when embodiment 1-3 igniter is applied to other engines and burner.
Number explanation in figure: 1, fixing bolt；2, Anodic；3, grounding electrode；4, anodized insulation set；5, lower anode；6,
Locating flange；7, ionization space b；8, isolated area；9, ionization space a；10, air inlet a；11, air inlet b.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments: doing as example to the application
Further description explanation.
Embodiment 1
As shown in Fig. 2, the present embodiment provides a kind of plasma igniter with air inlet and hollow vent anode, packet
Include Anodic, lower anode, grounding electrode, anodized insulation set.The Anodic is located at igniter center, is fixed on sun
In the insulation sleeve of pole；The lower anode has hollow structure, is mounted in anodized insulation set, using helicitic texture and anodized insulation set
Connection；The effect of anodized insulation set has two, and first is the insulation for both fixing Anodic and lower anode and realizing, the
Two effects are to be spaced apart ionization space a with ionization space b, avoid interfering with each other when electric discharge；It is arranged on the grounding electrode
There are two air inlets, are respectively used to be passed through air and fuel, the position of described two air inlets can suitably adjust according to actual needs
It is whole；There is a locating flange for being used to install the plasma igniter in the grounding electrode lower end.According to actual needs, the positioning mode
Orchid also can be set in upper grounding electrode.
When work, Anodic and lower anode are powered respectively by power supply.Power supply is first using lower voltage as Anodic power supply (example
Such as: 10,000 volts or less), this anode no power at present；At the lower voltage, it is sent out between Anodic-anodized insulation set-grounding electrode
Raw dielectric barrier discharge, the gas positioned at ionization space a ionize under DC Electric Field, generate free electron and have
The nonequilibrium plasma of positive charge cation composition, chemical reactivity improve.
After entering ionization space b with the nonequilibrium plasma compared with high reaction activity, air inlet a and air inlet b are closed.
Anodic powers off at this time, and supply voltage raising immediately (such as: it ten thousand volts of 1.5-2) and is lower anode supply, under action of high voltage
Arc discharge occurs between grounding electrode and lower anode.While lower anodal closure, the air duct in lower anode is passed through sky
Gas, this partial air are not involved in ionization reaction, and role is to cool down for electrode, and generate disturbance to the flow field of nozzle to change
Kind burning.Since the reactivity of gaseous mixture at this time has improved, igniting and combustion reaction occur rapidly.Flame will be with big
The form of volume flame torch is gone out from spout, into engine chamber, is ignited and is located at the indoor flammable air-fuel that burns
Gaseous mixture.
In entire discharge process, due to the presence of anodized insulation set, ionization space a and ionization space b is completely cut off.Cause
This, only occurs dielectric barrier discharge, arc discharge only occurs in ionization space b in ionization space a.
This programme uses dielectric barrier discharge-arc discharge combined discharge mode, can be by nonequilibrium plasma
Lean flammability limit is wide, reactivity is big and the advantages such as the operating air pressure height of thermal equilibrium plasma combine, and reaches in broadness
Fuel air ratio within the scope of realize high energy, stable ignition purpose；Moreover, because the fuel and air for igniting are by air inlet
It is passed through, does not need the indoor gaseous mixture of main burning and flow backwards, therefore can be according to ignition conditions using air of the control through air inlet a
And the method control of the fuel flow rate through air inlet b is located at the equivalent proportion of gaseous mixture in ionization space a and ionization space b, reaches
Improve the purpose of ionization and ignition results according to actual condition.Meanwhile a small amount of sky is passed through in the lower anode with hollow structure
Gas can be reached for electrode cooling, and generate disturbance to the flow field of nozzle to improve the effect of burning.
Embodiment 2
As shown in figure 3, the present embodiment provides a kind of plasma igniter with air inlet and hollow vent anode, packet
It includes including Anodic, lower anode, grounding electrode, anodized insulation set.The Anodic is located at igniter center, and installation is fixed
In anodized insulation set；The lower anode has hollow structure, is mounted in anodized insulation set；The effect of the anodized insulation set
Have two, first effect is and the insulation both realized for fixing Anodic and lower anode, and second effect is that isolation ionizes
Space a and ionization space b；It is provided with air inlet a and air inlet b on the grounding electrode, is respectively used to be passed through air or fuel；
There is a locating flange for being used to install the plasma igniter in the lower grounding electrode lower end, according to actual needs the locating flange
Also it can be set in upper grounding electrode.
Anodic and lower anode are powered respectively by power supply.When work, respectively by air inlet a be passed through a certain amount of air (or
Fuel).Power supply is first using lower voltage as Anodic power supply (such as: 10,000 volts or less), this anode no power at present；Lower
Under voltage, dielectric barrier discharge occurs between grounding electrode-anodized insulation set-Anodic, positioned at ionization space a air (or
Fuel) ionized under DC Electric Field, generate free electron and with positive charge cation composition it is non-equilibrium etc. from
Daughter, chemical reactivity improve.
Due to being continually fed into for air (or fuel), the nonequilibrium plasma for ionizing generation continues to move downward, pass through
Isolated area simultaneously enters in ionization space b.At this point, air inlet a stopping is passed through air (or fuel), power cut-off.With that is, air inlet
Mouth b is passed through fuel (or air)；Under the high energy electron effect in generated nonequilibrium plasma, in the fuel of electroneutral
Molecule becomes positively charged heavy ion and electronegative free electron, to be changed into nonequilibrium plasma, reactivity is mentioned
It is high.At this point, power supply with higher voltage (such as: ten thousand volts of 1.5-2) power, under action of high voltage lower anode and grounding electrode it
Between arc discharge occurs.While lower anodal closure, the air duct in lower anode is passed through air, this partial air is not involved in
Ionization reaction, role are to cool down for electrode, and generate disturbance to the flow field of nozzle to improve burning.Due to mixing at this time
The reactivity of gas has improved, therefore igniting and combustion reaction occur rapidly.Flame by the form of large volume flame torch from
Spout is gone out, and into engine chamber, is ignited and is located at the indoor flammable air and fuel mixture that burns.
In entire discharge process, due to the presence of grounding electrode insulation set, ionization space a and ionization space b is completely cut off.
Therefore, dielectric barrier discharge will not occur between lower grounding electrode-anodized insulation set-anode.
This programme uses dielectric barrier discharge-arc discharge combined discharge mode, can be by nonequilibrium plasma
Lean flammability limit is wide, reactivity is big and the advantages such as the operating air pressure height of thermal equilibrium plasma combine, and reaches in broadness
Fuel air ratio within the scope of realize high energy, stable ignition purpose；Moreover, because the fuel and air for igniting are by air inlet
It is passed through, does not need the indoor gaseous mixture of main burning and flow backwards, therefore can be according to ignition conditions using air of the control through air inlet a
The method control of (or fuel) and fuel (or air) flow through air inlet b is located at the equivalent proportion of gaseous mixture in ionization space b,
Achieve the purpose that improve ionization and ignition results according to actual condition；Meanwhile air inlet b spray into air (or fuel) and under
The air sprayed in anode also will play the role of cooling effect to anode, can play and extend electrode life.
Embodiment 3
As shown in figure 4, the present embodiment provides a kind of plasma igniter with air inlet and hollow vent anode, packet
Include Anodic, lower anode, grounding electrode, anodized insulation set.The Anodic is located at igniter center, is fixed on sun
In the insulation sleeve of pole；The lower anode has hollow structure, is mounted in anodized insulation set；There are two make for the anodized insulation set
With first is and the insulation both realized for fixing Anodic and lower anode, and second is isolation ionization space a and electricity
From space b；It is provided with fuel inlet on the grounding electrode, for being passed through fuel；The lower grounding electrode lower end has one to be used for
The locating flange of the plasma igniter is installed, the locating flange also can be set in other positions according to actual needs.
Anodic and lower anode are powered respectively by power supply.When work, a certain amount of fuel is passed through by air inlet a respectively.This
When, power supply is first using lower voltage as Anodic power supply (such as: 10,000 volts or less), this anode no power at present；In lower voltage
Under, dielectric barrier discharge occurs between grounding electrode-anodized insulation set-Anodic, the fuel positioned at ionization space a is powered on outside
It is ionized under field action, generates free electron and the nonequilibrium plasma with positive charge cation composition, chemical reaction
Activity improves.
Due to being continually fed into for fuel, the nonequilibrium plasma for ionizing generation continues to move downward, by isolated area simultaneously
It enters in ionization space b.At this point, fuel inlet stopping is passed through fuel, Anodic power-off.Due to igniter spout and engine
Main chamber is connected, and main burning room pressure is larger, therefore will have part of fuel-air gaseous mixture to enter through spout adverse current
In ionization space b.Under the high energy electron effect in generated nonequilibrium plasma, in the gaseous mixture molecular change of electroneutral
For positively charged heavy ion and electronegative free electron, to be changed into nonequilibrium plasma, reactivity is improved.This
When, power supply with higher voltage (such as: ten thousand volts of 1.5-2) power, occur between anode and grounding electrode under action of high voltage
Arc discharge.While lower anodal closure, the air duct in lower anode is passed through air, and it is anti-that this partial air is not involved in ionization
It answers, role is to cool down for electrode, and generate disturbance to the flow field of nozzle to improve burning.It is anti-due to gaseous mixture at this time
Activity is answered to improve, therefore igniting and combustion reaction occur rapidly.Flame will be rushed in the form of large volume flame torch from spout
Out, it into engine chamber, ignites and is located at the indoor flammable air and fuel mixture that burns.
This programme uses dielectric barrier discharge-arc discharge combined discharge mode, can be by nonequilibrium plasma
Lean flammability limit is wide, reactivity is big and the advantages such as the operating air pressure height of thermal equilibrium plasma combine, and reaches in broadness
Fuel air ratio within the scope of realize high energy, stable ignition purpose；Since the fuel for igniting is passed through by fuel inlet, separately there is one
Partial air-fuel mixture enters ionization space b through spout adverse current, and the gaseous mixture for being accordingly used in igniting is integrally in rich,
It can be further ensured that the effect that igniting is ignited；Meanwhile the air sprayed in lower anode will also play cooling effect, energy to anode
Enough play the role of extending electrode life.
Embodiment 4
The control method of above-described embodiment 1-3 igniter includes control method on piston-mode motor, in other hairs
The control method of motivation and burner；
(1) control method on piston-mode motor (reciprocating or rotary piston) specifically: crank position sensing
Device judges crank position, if current crank angle does not arrive setting value, continues to judge；If having arrived setting value, by ECU to power supply
Output low pressure discharge instruction.
After power supply is connected to electric discharge instruction, a certain lower voltage U1 is exported to Anodic, is denoted as time t1 at this time.On at this point,
Anode and grounding electrode discharge, and form dielectric barrier discharge in ionization space a, the gas in ionization space a is ionized
At nonequilibrium plasma.It is moved downward with that is, being ionized gas, enters ionization space b by insulating space through the Δ t time.
In t1+ time Δt, low pressure discharge instruction is terminated, Anodic power-off.At this point, ECU refers to power supply output electrion
It enables, the downward anode of power supply exports a certain high voltage U2 (U2 > U1).At this point, lower anode and grounding electrode discharge, in ionization space
Arc discharge is formed in b, the nonequilibrium plasma in ionization space b with very high reaction activity is ignited, and burning is anti-
It should start.Flame goes out spout in the form of flame torch, enters main chamber.While lower anode discharge, ECU output control
Instruction, the air duct of downward anode are passed through air, and cooling for lower anode, this partial air goes out spout, to flame jet
Flow field generates disturbance, promotes combustion efficiency.
ECU reads cylinder pressure sensor signal.If cylinder presses p to be greater than a certain setting value p1, then it is assumed that light a fire successfully, ECU continues
CRANK SENSOR is read, subsequent cycle igniting is carried out.If cylinder presses p to be less than p1, then it is assumed that loss of ignition, at this time ECU
To power source output command, with U2+ Δ U to lower anode discharge, while increasing the fuel flow rate entered through air inlet, and continue to read
Cylinder presses signal, until lighting a fire successfully；If when discharge voltage increases to always setting value U3 (U3 > U2) or fuel flow rate
Loss of ignition is still judged when increasing to a certain setting value, and to guarantee that ignitor terminates safely electric discharge, this circulation is no longer lighted a fire.
(2) in the control method of other engines and burner specifically: ECU issues low pressure discharge instruction to power supply.Electricity
After source is connected to electric discharge instruction, a certain lower voltage U1 is exported to Anodic, is denoted as time t1 at this time.At this point, Anodic and ground connection
Electrode discharge forms dielectric barrier discharge in ionization space a, and the gas in ionization space a is ionized to non-equilibrium etc.
Gas ions.It is moved downward with that is, being ionized gas, enters ionization space b by insulating space through the Δ t time.
In t1+ time Δt, low pressure discharge instruction is terminated, Anodic power-off.At this point, ECU refers to power supply output electrion
It enables, power supply exports a certain high voltage U2 (U2 > U1) to anode.At this point, lower anode and grounding electrode discharge, in ionization space b
Interior formation arc discharge, the nonequilibrium plasma in ionization space b with very high reaction activity are ignited, combustion reaction
Start.Flame goes out spout in the form of flame torch, enters main chamber.While lower anode discharge, ECU output control refers to
It enables, the air duct of downward anode is passed through air, and cooling for lower anode, this partial air goes out spout, to flame jet stream
Field generates disturbance, promotes combustion efficiency.
ECU reads temperature sensor signal, obtains burning room temperature T.If temperature T is greater than a certain setting value T1, then recognize
To light a fire successfully, electrion instruction immediately is terminated, and lower anodal opening, ignition process terminates.If temperature T is less than T1, then it is assumed that
Loss of ignition, ECU is to power source output command at this time, with U2+ Δ U to anode discharge, while increasing the fuel entered through air inlet
Flow, and continue to read temperature signal, until lighting a fire successfully；If when discharge voltage increase to always setting value U3 (U3 >
Loss of ignition is still judged when U2) or when fuel flow rate increases to a certain setting value, to guarantee that ignitor terminates safely electric discharge,
And export failure alarm signal.
The protection scope of the invention is not limited thereto, and anyone skilled in the art is in the present invention
It creates in the technical scope disclosed, the technical solution and its inventive concept created according to the present invention are subject to equivalent substitution or change,
It should all cover within the protection scope of the invention.
Claims (8)
1. a kind of plasma igniter with air inlet and hollow vent anode, which is characterized in that including being located at ground connection electricity
Anodic, lower anode, anodized insulation set in extremely, the anodized insulation are set on the top of grounding electrode, the Anodic
It is embedded in the wall body of anodized insulation set, one end of the lower anode is put in the mounting hole of anodized insulation set；The anode is exhausted
Edge set includes groove a, the groove b and groove c being sequentially connected from top to bottom, and the groove a, groove b are connected with groove c；Institute
Stating lower anode includes be connected boss a, boss b, boss c and platform, and the boss a is located in groove a, and boss b is located at groove b
In, boss c is located in groove c, and platform is located at the lower part of grounding electrode；
An ionization space a, the groove c of anodized insulation set are formed between the part recess a and grounding electrode of the anodized insulation set
Isolated area is formed between grounding electrode, and ionization space b, the ionization space are formed between the platform and grounding electrode of lower anode
A, isolated area is connected with ionization space b；The lower anode has hollow structure, and the hollow structure is air duct；It is connecing
The upper one end of ground electrode is provided with air inlet a, and air inlet a is connected with ionization space a.
2. a kind of plasma igniter with air inlet and hollow vent anode, feature exist according to claim 1
In the application further includes air inlet b.
3. a kind of plasma igniter with air inlet and hollow vent anode, feature exist according to claim 2
In the air inlet b is located at the top other end of grounding electrode, and air inlet b is connected with ionization space a.
4. a kind of plasma igniter with air inlet and hollow vent anode, feature exist according to claim 2
In the air inlet b is located at the lower end thereof of grounding electrode, and is obliquely installed, and air inlet b is connected with ionization space b.
5. a kind of plasma igniter with air inlet and hollow vent anode, feature exist according to claim 1
In the application further includes fixing bolt, for the relative position between dead earth electrode and anodized insulation set.
6. a kind of plasma igniter with air inlet and hollow vent anode, feature exist according to claim 1
In ionization space b further includes lower anode bottom space.
7. a kind of plasma igniter with air inlet and hollow vent anode, feature exist according to claim 1
In the grounding electrode lower part is equipped with one for installing the locating flange of the plasma igniter.
8. a kind of plasma igniter with air inlet and hollow vent anode, feature exist according to claim 1
In the grounding electrode top is equipped with one for installing the locating flange of the plasma igniter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811272971.6A CN109253031A (en) | 2018-10-26 | 2018-10-26 | A kind of plasma igniter with air inlet and hollow vent anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811272971.6A CN109253031A (en) | 2018-10-26 | 2018-10-26 | A kind of plasma igniter with air inlet and hollow vent anode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109253031A true CN109253031A (en) | 2019-01-22 |
Family
ID=65042876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811272971.6A Withdrawn CN109253031A (en) | 2018-10-26 | 2018-10-26 | A kind of plasma igniter with air inlet and hollow vent anode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109253031A (en) |
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2018
- 2018-10-26 CN CN201811272971.6A patent/CN109253031A/en not_active Withdrawn
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Application publication date: 20190122 |
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| WW01 | Invention patent application withdrawn after publication |