阅读说明：本技术 一种点火设备 (Ignition equipment ) 是由 方可宁 薛志村 曾磊赟 何磊 李想 邬文燕 梁健 毛安元 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种点火设备,具有燃烧部和点火稳焰组件。燃烧部具有喷射口。点火稳焰组件至少部分位于燃烧部。点火稳焰组件包括稳焰装置、点火装置、离子火焰检测装置和信号强化装置。稳焰装置具有盘状的稳焰主体,稳焰主体面向喷射口,稳焰主体上有第一通孔。点火装置延伸进入第一通孔。离子火焰检测装置穿过喷射口延伸至燃烧部外。信号强化装置接地并延伸至燃烧部外,信号强化装置靠近离子火焰检测装置设置并与其隔开,以强化检测到的电信号。根据本发明的点火设备,能在设备内气体流速很快的情况下稳定火焰,避免脱火现象发生,点火时形成扇形电弧,有利于高速气流的点燃成功；能稳定检测高速气流的火焰信号强度,进而实现大功率运行。(The invention discloses an ignition device having a combustion portion and an ignition flame holding assembly. The combustion section has an injection port. The ignition flame holder assembly is at least partially located in the combustion section. The ignition flame stabilizing assembly comprises a flame stabilizing device, an ignition device, an ion flame detection device and a signal strengthening device. The flame holding device has a disk-shaped flame holding body facing the ejection port, and the flame holding body has a first through hole. The ignition device extends into the first through hole. The ion flame detection device passes through the jet orifice and extends out of the combustion part. The signal strengthening device is grounded and extends out of the combustion part, and the signal strengthening device is arranged close to and separated from the ion flame detection device so as to strengthen the detected electric signal. According to the ignition device, flame can be stabilized under the condition that the flow rate of gas in the device is high, the phenomenon of fire escape is avoided, and a fan-shaped electric arc is formed during ignition, so that the successful ignition of high-speed gas flow is facilitated; the flame signal intensity of high-speed airflow can be stably detected, and high-power operation is further realized.)

1. An ignition device, characterized in that the ignition device has a combustion portion and an ignition flame holding assembly for combustion and injection of a flame, the combustion portion having an injection port, the ignition flame holding assembly being at least partially disposed in the combustion portion to ignite a fuel gas in the combustion portion to produce a flame, the ignition flame holding assembly comprising:

the flame stabilizing device is provided with a disc-shaped flame stabilizing main body, the flame stabilizing main body is arranged facing the jet orifice, and a first through hole is formed in the flame stabilizing main body;

an ignition device extending into the first through-hole;

an ion flame detection device extending to the outside of the combustion section through the ejection port; and

a signal enhancing device configured to be grounded and extend to an outside of the combustion portion, the signal enhancing device being disposed adjacent to and spaced apart from the ion flame detection device such that ions generated via combustion between the signal enhancing device and the ion flame detection device form an electrical circuit to enhance an electrical signal detected by the ion flame detection device.

2. The ignition device of claim 1, wherein the signal intensifying apparatus comprises a main body, an end of the main body is provided with a first bending portion, and the first bending portion is bent towards a first side of the ionic flame detecting apparatus.

3. The ignition apparatus of claim 2, wherein the signal intensifying means further has a second bend spaced apart from the first bend, the second bend bending from the main body toward a second side of the ionic flame detecting means, the second side being opposite the first side.

4. The ignition device according to claim 3, wherein an angle of projection of the first bent portion and the second bent portion on a radial cross section of the combustion portion is 80 to 100 °.

5. The ignition device according to any one of claims 1 to 4, characterized by further comprising:

the premixing part is connected with a fuel gas channel and a combustion-supporting gas channel so as to enable the fuel gas and the combustion-supporting gas to be premixed; and

an extension connected between the premixing section and the combustion section;

the ignition flame stabilizing assembly further comprises a honeycomb part, a plurality of through holes are formed in the honeycomb part, the honeycomb part is arranged on the extending part, and the outer peripheral surface of the honeycomb part is abutted to the inner peripheral surface of the extending part.

6. The ignition device of claim 5,

the flame stabilizing device further comprises a connecting part, wherein the connecting part extends along the axial direction of the combustion part and is connected between the middle part of the honeycomb part and the middle part of the flame stabilizing main body;

the signal strengthening device is connected to the flame stabilizing main body;

the ignition device and the ion flame detection device extend through the honeycomb part and are electrically connected with the control device; and/or

The flame stabilizing main body is provided with at most two through holes.

7. The ignition device according to claim 5, wherein a staged swirling device is provided in the premixing portion, the staged swirling device includes at least two swirling discs for sufficiently mixing fuel gas and combustion-supporting gas, the at least two swirling discs are axially spaced apart from each other along the premixing portion, an outer periphery of each swirling disc abuts against an inner periphery of the premixing portion, and the swirling discs are provided with a plurality of openings inclined in an axial direction of the swirling discs and extending substantially in a radial direction of the swirling discs.

8. The ignitor of claim 7, wherein the staged swirling device includes a first stage swirling disk and a second stage swirling disk, the second stage swirling disk is closer to the extension portion than the first stage swirling disk, the premixing portion further has a fuel gas nozzle communicating with the fuel gas channel, the fuel gas nozzle is close to the end of the extension portion is configured as a closed end, the closed end extends through the first stage swirling disk and is located between the first stage swirling disk and the second stage swirling disk, and is close to the sidewall of the tube body at the closed end is circumferentially provided with a plurality of nozzles, and the plurality of nozzles face the inner wall of the premixing portion in the radial direction.

9. The ignition apparatus of claim 7 wherein the number of openings in the at least two swirl disks of the staged swirl device increases in steps in a direction away from the extension.

10. The ignition device of claim 5, wherein a radial dimension of the extension is less than a radial dimension of the premix portion.

Technical Field

The invention relates to the technical field of machinery, in particular to ignition equipment.

Background

The conventional ignition guns, such as those of equipment such as an incinerator and a gasification furnace, have the problems of low power, insufficient combustion, unstable flame, poor flame detection signal and the like. When the existing ignition gun is applied to a scene requiring high-power combustion, the phenomenon of fire escape can be caused by increasing the gas pressure or flow rate.

Therefore, there is a need for an ignition device that at least partially addresses the above problems.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

To at least partially solve the above problems, the present invention provides an ignition apparatus having a combustion portion for combustion and injection of a flame, the combustion portion having an injection port, and an ignition flame holding assembly at least partially provided to the combustion portion to ignite a fuel gas in the combustion portion to generate a flame, the ignition flame holding assembly comprising:

the flame stabilizing device is provided with a disc-shaped flame stabilizing main body, the flame stabilizing main body is arranged facing the jet orifice, and a first through hole is formed in the flame stabilizing main body;

an ignition device extending into the first through-hole;

an ion flame detection device extending to the outside of the combustion section through the ejection port; and

a signal enhancing device configured to be grounded and extend to an outside of the combustion portion, the signal enhancing device being disposed adjacent to and spaced apart from the ion flame detection device such that ions generated via combustion between the signal enhancing device and the ion flame detection device form an electrical circuit to enhance an electrical signal detected by the ion flame detection device.

According to the ignition device, the flame stabilizing device is arranged in the combustion part, so that flame can be stabilized under the condition that the flow rate of gas in the device is high, and the phenomenon of fire escape is avoided; the ignition device extends into the first through hole on the flame stabilizing device to form a fan-shaped electric arc during ignition, so that successful ignition of high-speed airflow is facilitated; the ion flame detection device and the signal strengthening device are matched, so that the combustion of high-speed airflow can be stably detected; therefore, high-efficiency ignition and stable combustion can be realized under the condition of high gas pressure and/or high flow velocity, and further high-power operation of the ignition equipment can be realized.

Further, the signal strengthening device comprises a main body, wherein a first bending part is arranged at the end part of the main body, and the first bending part is bent towards the first side of the ion flame detection device. Thereby, the formation of the detection loop may be facilitated.

Further, the signal enhancement device further has a second bending portion, the second bending portion is separated from the first bending portion, the second bending portion is bent from the main body toward a second side of the ion flame detection device, and the second side is opposite to the first side. According to the scheme, the ion concentration near the ion flame detection device can be further improved, and the detection signal can be improved.

Further, the included angle of the projection of the first bending part and the projection of the second bending part on the radial section of the combustion part is 80-100 degrees.

Further, the ignition apparatus further includes:

the premixing part is connected with a fuel gas channel and a combustion-supporting gas channel so as to enable the fuel gas and the combustion-supporting gas to be premixed; and

an extension connected between the premixing section and the combustion section;

the ignition flame stabilizing assembly further comprises a honeycomb part, a plurality of through holes are formed in the honeycomb part, the honeycomb part is arranged on the extending part, and the outer peripheral surface of the honeycomb part is abutted to the inner peripheral surface of the extending part. According to this scheme, honeycomb portion can make the gas mixture accelerate before getting into combustion portion, and is favorable to the formation of backward flow district.

Further, the air conditioner is provided with a fan,

the flame stabilizing device further comprises a connecting part, wherein the connecting part extends along the axial direction of the combustion part and is connected between the middle part of the honeycomb part and the middle part of the flame stabilizing main body;

the signal strengthening device is connected to the flame stabilizing main body;

the ignition device and the ion flame detection device extend through the honeycomb part and are electrically connected with the control device; and/or

The flame stabilizing main body is provided with at most two through holes. According to the arrangement, the flame stabilizing main body is basically of a solid structure, so that the speed of the airflow can be effectively reduced, and a backflow area is formed.

Further, be provided with hierarchical whirl device in the portion of premixing, hierarchical whirl device includes two at least whirl dishes to make fuel gas and combustion-supporting gas can the intensive mixing, two at least whirl dishes are followed the axial interval of portion of premixing sets up, just the periphery of whirl dish with the interior circumference butt of portion of premixing, the whirl dish is seted up along the axial direction slope of whirl dish and roughly along a plurality of openings of the radial extension of whirl dish. According to the scheme, the fuel gas and the combustion-supporting gas can be fully mixed, and the combustion efficiency is improved.

Further, hierarchical whirl device includes one-level whirl dish and second grade whirl dish, second grade whirl dish for one-level whirl dish is closer to the extension, in the portion of premixing still have with the fuel gas spray tube of fuel gas passageway intercommunication, being close to of fuel gas spray tube the tip structure of extension is the blind end, the blind end extension extends the one-level whirl dish and is located one-level whirl dish with between the second grade whirl dish, and be close to the lateral wall of the body of closed end department is provided with a plurality of spouts along circumference, a plurality of spouts are followed the radial direction orientation of portion of premixing the inner wall of portion of premixing. According to the scheme, the crossing of the flowing directions of the fuel gas and the combustion-supporting gas can be utilized to realize the uniform and sufficient mixing.

Further, the number of the openings on the at least two swirl disks of the staged swirl device increases in steps in a direction away from the extension. Thereby, gas mixing is further facilitated.

Further, a radial dimension of the extension is smaller than a radial dimension of the premixing portion.

Drawings

The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In the drawings:

fig. 1 is a schematic side view of an ignition device according to a preferred embodiment of the present invention;

FIG. 2 is a partial schematic structural view of a premixing portion of an ignition apparatus according to a preferred embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a partial structural view at an ignition flame holding structure of an ignition device according to a preferred embodiment of the present invention;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a schematic side view of the ignition apparatus of FIG. 1 from another perspective;

FIG. 7 is an enlargement of portion C of bitmap 6 in an attempt;

fig. 8 is a schematic structural view of a flame holding means of the ignition device according to the preferred embodiment of the present invention;

fig. 9 is a schematic structural view of a signal intensifying apparatus of an ignition device according to a preferred embodiment of the present invention; and

fig. 10 is a schematic view of the signal enhancing apparatus of fig. 9 from another perspective.

Description of reference numerals:

100: the ignition device 110: combustion section 111: jet orifice

120: the flame stabilizing device 121: flame holding body 122: first through hole

123: connecting part 124: second through hole 130: ignition device

140: ion flame detection device 150: signal enhancing device 151: main body

152: first bent portion 153: second bent portion 160: premixing section

161: fuel gas passage 162: oxidant gas passage 163: fuel gas nozzle

164: closed end 165: the nozzle 170: extension part

180: honeycomb portion 181: perforation 190: grading rotational flow device

191: primary swirl disk 192: secondary swirl disk 193: opening of the container

166: mounting flange

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.

In the following description, a detailed description will be given in order to thoroughly understand the present invention. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. It is apparent that the implementation of the embodiments of the invention is not limited to the specific details familiar to those skilled in the art. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.

It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

It is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used herein for purposes of illustration only and are not limiting.

Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings.

Refer to fig. 1, 2 and 4. The ignition device of the invention can be used for various types of devices such as incinerators and gasifiers. The ignition device 100 of the present invention includes a premixing portion 160, an extension portion 170, and a combustion portion 110, the extension portion 170 being connected between the premixing portion 160 and the combustion portion 110. The premixing part 160 is used for premixing fuel gas and combustion-supporting gas, and is connected with a fuel gas passage 161 and a combustion-supporting gas passage 162. The premixing part 160 may be installed outside the incinerator, the gasifier, and the like. In addition, a staged swirling device 190 is disposed in the pre-mixing portion 160 to uniformly mix the fuel gas and the combustion-supporting gas.

The extension part 170 is used to extend into the above-mentioned incinerator, gasifier, etc., and plays a role of transition and gas mixing. A mounting flange 166 is provided at the junction of the extension 170 and the premix section 160. The ignition device 100 can be fixed to the above-described devices such as the incinerator and the gasifier via the mounting flange 166. The combustion section 110 has an injection port 111 for combustion and injection of flame. The ignition device 100 further comprises an ignition flame holder assembly located at least partially within the combustion section 110. Alternatively, the ignition flame holding assembly is partially disposed in the extension portion 170, partially disposed in the combustion portion 110, and the other portion protrudes from the injection port 111. The radial dimension of the extension 170 is preferably smaller than the radial dimension of the premix section 160.

When the device is operated, the fuel gas and the combustion-supporting gas enter the premixing part 160, are uniformly mixed under the action of the grading cyclone device 190, enter the combustion part 110 through the extension part 170, and are ignited under the action of the ignition flame-stabilizing component to form stable flame.

Please refer to fig. 1, fig. 4, fig. 5 and fig. 6. The ignition flame holding assembly includes flame holding means 120, ignition means 130, ionic flame detection means 140, signal enhancing means 150 and honeycomb portion 180. The honeycomb portion 180 is disposed inside the extending portion 170, and the outer peripheral surface thereof abuts against the inner peripheral surface of the extending portion 170. Specifically, the honeycomb 180 is caught within the extension 170 perpendicular to the circumferential direction of the extension 170. The honeycomb portion 180 is provided with a plurality of through holes 181. Wherein, two large through holes are arranged in the radial direction of the honeycomb part 180 for the penetration of the ignition device 130 and the ion flame detection device 140. The other small through holes (i.e., the through holes 181) are distributed on both sides of the two large through holes. Thus, the mixed gas may be accelerated at the honeycomb portion 180, and the arrangement of the penetration holes 181 facilitates the formation of a recirculation zone at the flame upon combustion.

Please refer to fig. 4, fig. 5, fig. 7 and fig. 8 for the detailed structure of the flame holding device 120. Which includes a disk-shaped flame holding body 121 and a connecting portion 123. The connection part 123 has one end connected to the middle of the honeycomb part 180 and the other end connected to the middle of the flame holding body 121, and the flame holding body 121 is disposed to face the injection port 111. The flame holding means 120 is formed substantially in a "T" shape in a circumferential cross section along the combustion portion 110. Thereby, the flame holder 120 can be fixed to the honeycomb portion 180. Preferably, the flame holding body 121 may be coaxially disposed with the combustion part 110. It will be readily appreciated that the area of the flame holding body 121 is significantly less than the radial cross-sectional area of the combustion section 110. For example, the area of the flame holding body 121 may be 10% to 90%, preferably 30% to 70%, more preferably 40% to 60%, or the like of the radial cross-sectional area of the combustion portion 110.

Referring to fig. 4, 5 and 7, the flame holding body 121 is provided with a first through hole 122 and a second through hole 124. It will be readily appreciated that the flame holding body 121 may also be provided with a third hole (e.g., a threaded blind hole, a non-through hole) for mounting the connection 123. Preferably, the flame holding body 121 and the connecting portion 123 are constructed as a single piece, i.e., they are integrally formed, and only two through holes, i.e., the above-mentioned first through hole 122 and the second through hole 124, are provided on the flame holding body 121.

Wherein one end of the ignition device 130 extends into the first through hole 122 and is located at the first through hole 122, and the other end passes through the large through hole of the honeycomb portion 180 and is electrically connected to the control device. The ignition device 130 may be configured as an ignition electrode capable of discharging electricity to the flame holding body 121. Due to the presence of the first through hole 122, the arc of the discharge may appear as a sector. In this way, the mixture can be ignited more easily, especially also successfully when the flow rate of the mixture is extremely fast. One end of the ion flame detecting device 140 extends to the outside of the combustion part 110 through the injection port 111, and the other end passes through another large through hole on the honeycomb part 180 and is electrically connected to the control device.

The ion flame detection device 140 is used for detecting an electrical signal generated during flame combustion, so as to determine a flame state according to the intensity and fluctuation properties of the electrical signal. Specifically, the flame generates ions when burning, and has a unidirectional conductive property. When an electric potential is applied to the end of the ion flame detection device 140, a loop can be formed by the flame and the grounded equipment casing, so that a weak current is generated, and an electric signal is obtained.

In addition, the flame holding body 121 is provided with an approximately solid plate, so that the high-speed mixed air flow can be decelerated and redirected to a certain extent, two rotating vortexes can be more easily formed at one side of the flame holding body 121 facing the injection port 111 to form a backflow area, and the phenomenon of fire dropping during high-power operation can be avoided. By utilizing the flame stabilization principle of the backflow zone, high-temperature flue gas generated by combustion of the mixed gas flows back to the backflow zone at the flame stabilizing disc under the backflow effect of the rotating vortex. The backflow of the high-temperature flue gas enables the gas in the area to have high temperature, and the stable high-temperature area can continuously ignite flame after the flame is formed, so that the flame can be stably burnt.

However, since the ignition device 100 of the present invention can operate with high power, the flow rate of the internal mixture gas is very high, the concentration of ions emitted from the end of the ion flame detection device 140 is reduced, the contact between the flame and the outer shell of the combustion part 110 is weakened, the signal is prone to be attenuated, and the stability is poor. For this purpose, a signal enhancing device 150 is provided, specifically referring to fig. 4, fig. 6, fig. 7, fig. 9 and fig. 10. Configured as a ground probe. One end of the signal strengthening device 150 is connected to the flame holding body 121, and the other end extends out of the jet opening 111, and the signal strengthening device 150 is disposed near the ion flame detection device 140 and is separated from the ion flame detection device 140. Further, the signal amplification device 150 preferably has a branch at a portion outside the ejection port 111.

For example, the signal enhancing device 150 may include a main body 151, a first bending part 152 and a second bending part 153. Wherein the first bending part 152 is located at an end of the main body 151 located outside the injection port 111, which is bent toward the first side of the ion flame detection device 140. The second bent portion 153 is spaced apart from the first bent portion 152, or spans the first bent portion. That is, the second bent portion 153 is closer to the ejection opening 111 than the first bent portion 152.

The second bent portion 153 is bent from the main body 151 toward a second side of the ion flame detection device 140 opposite to the first side. Thus, the included angle of the projection of the first bent portion 152 and the second bent portion 153 on the radial cross section of the combustion portion 110 is 80 to 100 °, for example, the included angle α of the first bent portion 152 and the second bent portion 153 shown in fig. 7 and 10 is 90 °. It is easy to understand that more bending portions can be arranged according to the requirement of signal strength, and are not described herein again.

This makes it possible to form an electric circuit between the signal amplification device 150 and the ion flame detection device 140 via ions generated by combustion, to amplify the electric signal detected by the ion flame detection device 140, and to form a stable signal supplement when the mixed gas velocity is too high.

Please refer to fig. 1, 2 and 3. As described above, the staged swirling device 190 in the pre-mixing portion 160 can sufficiently mix the fuel gas and the oxidant gas. Wherein the staged swirling device 190 comprises at least two swirling discs, such as 2, 3, 4, 5 or more, etc. At least two whirl plates are arranged along the axial direction of the premixing part 160 at intervals, and the outer peripheries of the whirl plates are abutted against the inner periphery of the premixing part 160. I.e., the swirl disks are disposed perpendicular to the axial direction of the premixing section 160.

The spinning disk is provided with a plurality of openings 193 that incline along the axial direction of the spinning disk and extend generally along the radial direction of the spinning disk. Thus, the gas can turn while passing through the opening 193, forming a rotating flow trajectory. Preferably, the number of openings 193 in at least two of the spinning disks increases in steps away from the extension 170. That is, the degree of swirl flow is reduced along the traveling direction of the gas, which is more advantageous for uniform mixing, and does not cause excessive loss to the velocity of the gas. Wherein the larger the angle at which the opening 193 is inclined, the better the mixing effect.

Specifically, in the present embodiment, 2 swirl disks, i.e., a primary swirl disk 191 and a secondary swirl disk 192, are provided. Wherein the primary swirl disk 191 is further away from the extension 170 than the secondary swirl disk 192. I.e. the gas passes first through the primary discs 191 and then through the secondary discs 192.

The communication position of the combustion-supporting air channel 162 and the premixing part 160 is located on one side of the primary cyclone disk 191 far away from the extension part 170. The gas passage is connected to a fuel gas nozzle 163 disposed in the premixing part 160, and a nozzle of the fuel gas nozzle 163 is positioned between the primary spinning disk 191 and the secondary spinning disk 192.

Specifically, the end of the fuel gas nozzle 163 adjacent the extension 170 is configured as a closed end 164, the closed end 164 extending through the primary swirl disk 191. And the sidewall of the tube body near the closed end 164 is provided with a plurality of nozzles 165 in a circumferential direction, the plurality of nozzles 165 being directed toward the inner wall of the premixing part 160 in a radial direction of the premixing part 160. Therefore, the combustion-supporting gas can be formed into a first swirling flow, then is mixed with the fuel gas jetted along the radial direction intensely, and then is subjected to a second swirling flow, so that the mixing uniformity can be greatly improved. Especially when the equipment runs at high power, the mode can ensure that the fuel gas and the combustion-supporting gas are uniformly mixed under the condition of extremely high flow velocity.

According to the ignition device 100 of the present invention, the flame stabilizer 120 is disposed in the combustion portion 110, so that the flame can be stabilized when the gas flow rate in the device is fast, thereby avoiding the occurrence of misfire; the ignition device 130 extends into the first through hole 122 on the flame holder 120 to form a fan-shaped arc during ignition, which is beneficial to successful ignition of high-speed airflow; the cooperation of the ion flame detection device 140 and the signal enhancement device 150 can stably detect the combustion of the high-speed airflow; and the grading cyclone device 190 can still uniformly mix the air flow under the high flow speed state. As a result, stable ignition and combustion can be achieved under conditions of high gas pressure and/or high flow rate, and stable combustion can be achieved in a high-power operation state of the ignition device 100.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.