CN117927970A - Ignition rod and ignition device - Google Patents
Ignition rod and ignition device Download PDFInfo
- Publication number
- CN117927970A CN117927970A CN202410176924.0A CN202410176924A CN117927970A CN 117927970 A CN117927970 A CN 117927970A CN 202410176924 A CN202410176924 A CN 202410176924A CN 117927970 A CN117927970 A CN 117927970A
- Authority
- CN
- China
- Prior art keywords
- ignition
- insulating shell
- leads
- silicon nitride
- tail end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 38
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000002485 combustion reaction Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 4
- 235000021168 barbecue Nutrition 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 abstract description 6
- 230000000391 smoking effect Effects 0.000 abstract description 4
- 238000005485 electric heating Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 7
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/22—Details
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
The invention relates to an ignition rod and an ignition device, and belongs to the technical field of electric heating devices. The ignition rod comprises an insulating shell, a silicon nitride heating body and two leads, wherein the leads are connected to one end of the silicon nitride heating body in the insulating shell; the other end of the silicon nitride heating body extends from the head end of the insulating shell to the outside of the insulating shell, the two leads extend outwards from the tail end of the insulating shell, and the leads and the tail end of the insulating shell are mutually fixed at the position of the chamfering platform. The ignition rod can finish primary starting ignition within 1-2 minutes, has short time consumption and quick ignition, does not generate a large amount of smoke in the ignition process, can be used indoors, and is more suitable for use scenes needing long-time ignition, such as a barbecue oven smoking mode and the like.
Description
Technical Field
The invention relates to the technical field of electric heating devices, in particular to the technical field of ignition bars, and specifically relates to an ignition bar and an ignition device.
Background
The existing ceramic material electrothermal body has the characteristic of high heating temperature and is widely used for ignition devices in equipment such as barbecue ovens and the like.
However, the barbecue oven using the ceramic material electric heating body has the problem of long ignition time, and the barbecue oven can be ignited after being electrified for 3-5 minutes, and a large amount of smoke is generated in the ignition time, so that the barbecue oven cannot be used indoors.
Therefore, how to overcome the above-mentioned drawbacks and provide a novel ignition device with short ignition time is a problem to be solved in the art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the ignition rod and the ignition device which can quickly ignite without generating a great amount of smoke in the ignition process and can be used indoors.
In order to achieve the above object, an ignition bar of the present invention has the following constitution:
The ignition rod comprises an insulating shell, a silicon nitride heating body and two leads, wherein the two leads are connected to one end of the silicon nitride heating body in the insulating shell; the other end of the silicon nitride heating body extends from the head end of the insulating shell to the outside of the insulating shell, the two leads extend outwards from the tail end of the insulating shell, the insulating shell is cylindrical, a chamfering platform is arranged at the tail end of the cylindrical insulating shell, and the leads and the tail end of the insulating shell are mutually fixed at the position of the chamfering platform.
In the ignition rod, the insulating shell is a ceramic shell, and the firing temperature of the ceramic shell is 1500-1650 ℃.
In the ignition rod, the two leads are welded on the silicon nitride heating body, and the welding point is positioned in the insulating shell.
The ignition rod also comprises a sleeve, the sleeve is arranged at the inner side of the tail end of the insulating shell, and the two leads pass through the sleeve.
In the ignition rod, the cross section of the sleeve is 8-shaped and comprises two independent through holes, and the two leads respectively pass through the two through holes.
The ignition rod also comprises a flange arranged at the outer side of the tail end of the insulating shell, and the two leads penetrate through and are fixed on the flange.
The invention also provides an ignition device, which comprises any ignition rod and a combustion chamber, wherein the combustion chamber comprises a chamber wall, an ignition hole is formed in the chamber wall, the ignition rod is arranged in the ignition hole, one end of the silicon nitride heating body extending from the head end of the insulating shell to the outside of the insulating shell is positioned at the inner side of the chamber wall, and the parts of the two leads extending outwards from the tail end of the insulating shell are positioned at the outer side of the chamber wall.
In the ignition device, the chamber wall is also provided with a combustible material placing hole through which the combustible material is placed on the inner side of the chamber wall and above the silicon nitride heating body.
In the ignition device, the combustion chamber further comprises a bottom connected with the chamber wall, and a plurality of air vents are formed in the chamber wall and/or the bottom.
The ignition rod comprises an insulating shell, a silicon nitride heating body and two leads, wherein the two leads are connected to one end of the silicon nitride heating body in the insulating shell; the other end of the silicon nitride heating body extends from the head end of the insulating shell to the outside of the insulating shell, the two leads extend outwards from the tail end of the insulating shell, and the leads and the tail end of the insulating shell are mutually fixed at the position of the chamfering platform. The ignition rod can finish primary starting ignition within 1-2 minutes, has short time consumption and quick ignition, does not generate a large amount of smoke in the ignition process, can be used indoors, and is more suitable for use scenes needing long-time ignition, such as a barbecue oven smoking mode and the like.
Drawings
FIG. 1 is a schematic view of the structure of an ignition bar of the present invention;
FIG. 2 is a side view of the ignition bar of FIG. 1;
FIG. 3 is a cross-sectional view of the ignition bar of the present invention taken along line H-H of FIG. 2;
FIG. 4 is a schematic view of another embodiment of an ignition bar of the present invention;
fig. 5 is a schematic structural view of a first embodiment of the ignition device of the present invention;
fig. 6 is a schematic structural view of a second embodiment of the ignition device of the present invention;
fig. 7 is a schematic structural view of a third embodiment of an ignition device of the present invention;
fig. 8 is a schematic structural view of a fourth embodiment of an ignition device of the present invention;
fig. 9 is a schematic structural view of a fifth embodiment of an ignition device of the present invention;
FIG. 10 is a schematic view of the tail end of the insulating housing of FIG. 5;
FIG. 11 is a schematic view of the tail end of the insulating housing of FIG. 6;
FIG. 12 is a schematic view of the tail end of the insulating housing of FIG. 7;
FIG. 13 is a schematic view of the tail end of the insulating housing of FIG. 8;
FIG. 14 is a schematic view of an ignition bar of the present invention without a chamfer land;
FIG. 15 is a schematic view of the structure of an ignition bar with internal restraint of the present invention;
FIG. 16 is a schematic view of the structure of an ignition bar employing a thinner silicon nitride heater of the present invention;
FIG. 17 is a schematic view showing the structure of the silicon nitride heat-generating body in FIG. 16.
Reference numerals:
The device comprises an insulating shell 1, a silicon nitride heating body 2, a lead 3, an inner sleeve 4, a combustion chamber 5, an ignition hole 6, a combustible material placing hole 7, a vent 8, a hexagonal nut 9, a flange edge 10, a 90-degree fixing piece 11, a screw 12, a sleeve 13, a chamfer platform 14 and an inner limit 15.
Detailed Description
In order to make the technical contents of the present invention more clearly understood, the following examples are specifically described.
Fig. 1 is a schematic view of an ignition rod according to the present invention.
In one embodiment, as shown in fig. 1 to 4, the ignition rod comprises an insulating shell 1, a silicon nitride heating body 2 and two leads 3, wherein the two leads 3 are connected to one end of the silicon nitride heating body 2 in the insulating shell 1; the other end of the silicon nitride heating body 2 extends from the head end of the insulating shell 1 to the outside of the insulating shell 1, and the two leads 3 extend outwards from the tail end of the insulating shell 1. The insulating housing 1 may be cylindrical, the tail end of the cylindrical insulating housing 1 is provided with a chamfer platform 14, and the lead 3 and the tail end of the insulating housing 1 are mutually fixed at the position of the chamfer platform 14 by a screw. In an alternative embodiment, as shown in fig. 14, the tail end of the cylindrical insulating housing 1 may not be provided with a chamfer platform 14, and the lead 3 and the tail end of the insulating housing 1 may be fixed to each other by screws.
The two leads 3 are welded on the silicon nitride heating body 2 by adopting high-temperature wires, and the welding points are positioned in the insulating shell 1. The firing temperature of the silicon nitride heat-generating body 2 is 1700 to 2000 ℃, preferably 1800 ℃. And the silicon nitride heating body 2 is resistant to high temperature of 1500 ℃. The insulating shell 1 is an alumina ceramic shell, and the firing temperature is 1500 ℃ to 1650 ℃, preferably 1550 ℃ and the high temperature resistance is 1250 ℃. The ceramic shell has better insulativity, can keep good insulativity in a long-time high-temperature environment, and ensures the safety of the ignition rod.
As shown in fig. 3 and 4, the ignition rod further includes an inner sleeve 4, the inner sleeve 4 is disposed inside the tail end of the insulating housing 1, and the two wires 3 pass through the inner sleeve 4. The cross section of the inner sleeve 4 can be round,
The inner sleeve 4, which is oval or "8" -shaped in cross-section, comprises two separate through holes. In the case of an oval or circular cross-section of the inner sleeve 4 as shown in fig. 1, two wires 3 can be conveniently passed through the inner sleeve 4 during production; in the case of the cross section of the shape of the figure 8 shown in fig. 4, the two leads 3 respectively pass through the two through holes, and in the case of the cross section of the shape of the figure 8, the wall thickness of the inner sleeve 4 is increased, so that the stability of the inner sleeve 4 in fixed connection with the insulating housing 1 is improved, and particularly, the insulating housing 1 is prevented from being damaged when the screw is used for fixing.
In a further preferred embodiment, the ignition rod further comprises a flange disposed at the outer side of the tail end of the insulating housing 1, and the two leads 3 pass through and are fixed to the flange. The positional relationship between the lead 3 and the silicon nitride heating element 2 and the insulating case 1 may be fixed by screws or by flanges.
The invention also provides an ignition device, in one embodiment, as shown in fig. 5 and 10, the ignition device further comprises a combustion chamber 5, the combustion chamber 5 comprises a chamber wall, the chamber wall is provided with an ignition hole 6, a sleeve 13 is sleeved outside the ignition hole 6, the silicon nitride heating body 2 extends from the head end of the insulating shell 1 to one end outside the insulating shell 1 and is positioned at the inner side of the chamber wall, namely positioned in the combustion chamber 5, and the part of the two leads 3 extending outwards from the tail end of the insulating shell 1 is positioned at the outer side of the chamber wall, namely positioned outside the combustion chamber 5. The two leads 3 are fixed with the tail end of the insulating shell 1 through a hexagonal nut 9.
The chamber wall is also provided with a combustible material placing hole 7, and the combustible material is placed into the inner side of the chamber wall through the combustible material placing hole 7 and is positioned above the silicon nitride heating body 2.
The combustion chamber 5 further comprises a bottom part connected with the chamber wall, and a plurality of air vents 8 are formed in the chamber wall and/or the bottom part.
In other embodiments, the lead 3 and the tail end of the insulating housing 1 may be fixed by other means. As shown in fig. 6 and 11, the ignition rod is sleeved with a sleeve 13, and the sleeve 13 is abutted and fixed with the tail end of the insulating shell 1 through a screw 12. The structure shown in fig. 7 and 12 may be adopted, wherein the tail end of the insulating housing 1 is provided with a 90 ° fixing piece 11, and the 90 ° fixing piece 11 is fixed with the tail end of the insulating housing 1 by a screw 12.
In another embodiment of the ignition device shown in fig. 8 and 13, the tail end of the insulating housing 1 is provided with a flange 10, and the lead 3 is fixed to the tail end of the insulating housing 1 by the flange 10. The flange 10 is abutted and fixed with the insulating shell 1 through a screw 12, and a sleeve 13 is positioned between the flange 10 and the tail end of the insulating shell 1.
In another embodiment of the ignition device, shown in fig. 9, which comprises only a sleeve 13, the ignition rod is arranged in the sleeve 13 and passes through the ignition hole 6 on the wall of the combustion chamber 5.
In the above embodiments, various fixing methods of the lead wire 3 to the tail end of the insulating housing 1 are described. In addition, in another embodiment, as shown in fig. 15, the insulating housing 1 is provided with an inner limit 15 at the outer periphery of the head end of the silicon nitride heating body 2, and the position of the ignition rod can be fixed from the inner side of the combustion chamber 5 by the inner limit 15, so that the position is more stable.
In other alternative embodiments, as shown in fig. 16 and 17, a thinner silicon nitride heat-generating body 2 may be used, which heats up faster than the thinner silicon nitride heat-generating body 2 in the previous embodiments, and the ignition process may be completed faster, while on the other hand, a thicker silicon nitride heat-generating body 2 may have higher strength and longer service life. Can be applied to different specific ignition devices as required.
In the application of the invention, taking the ignition device provided with the ignition rod as an example, the tail ends of the two leads can be connected with various external power supplies according to the requirement to form a loop, and the power supplies can be designed into direct current 12V, 20V, 24V, 36V, 110V-120V or 200V-250V according to the design. And various powers can be adopted according to application scenes. The combustible particles are placed in the combustion chamber through the combustible material placing holes, then the combustion chamber is electrified, the silicon nitride heating body heats after being electrified, the initial starting ignition can be completed within about 6 to 12 seconds, the speed is high, and a large amount of smoke can not be generated in the ignition process. The ignition device is suitable for most of the existing barbecue ovens, carbon ovens, gas ovens and the like, and can also be suitable for ignition of various gas household appliances such as hydrogen energy combustion batteries, gas air-conditioning ignition, gas stoves, gas water heaters, gas ovens, gas dryers and the like, and is used for replacing the traditional pulse ignition mode.
When the ignition device is suitable for most existing barbecue ovens, the barbecue oven is more suitable for indoor use. On the other hand, the ignition rod has good temperature stability and high compensation temperature response speed, and is particularly suitable for modes such as a smoking mode and the like. Meanwhile, the ignition rod is safer, high-temperature-resistant, free of electric leakage, better in insulating performance and longer in service life. The combustion chamber has simple structure, so that the whole barbecue oven is convenient to clean and more sanitary.
The ignition rod comprises an insulating shell, a silicon nitride heating body and two leads, wherein the two leads are connected to one end of the silicon nitride heating body in the insulating shell; the other end of the silicon nitride heating body extends from the head end of the insulating shell to the outside of the insulating shell, the two leads extend outwards from the tail end of the insulating shell, and the leads and the tail end of the insulating shell are mutually fixed at the position of the chamfering platform. The ignition rod can finish primary starting ignition within 1-2 minutes, has short time consumption and quick ignition, does not generate a large amount of smoke in the ignition process, can be used indoors, and is more suitable for use scenes needing long-time ignition, such as a barbecue oven smoking mode and the like.
In this specification, the invention has been described with reference to specific embodiments thereof. It will be apparent that various modifications and variations can be made without departing from the spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (9)
1. The ignition rod is characterized by comprising an insulating shell, a silicon nitride heating body and two leads, wherein the two leads are connected to one end of the silicon nitride heating body in the insulating shell; the other end of the silicon nitride heating body extends from the head end of the insulating shell to the outside of the insulating shell, the two leads extend outwards from the tail end of the insulating shell, the insulating shell is cylindrical, a chamfering platform is arranged at the tail end of the cylindrical insulating shell, and the leads and the tail end of the insulating shell are mutually fixed at the position of the chamfering platform.
2. An ignition bar according to claim 1, wherein the insulating sheath is a ceramic sheath having a firing temperature of 1500 ℃ to 1650 ℃.
3. An ignition bar according to claim 1, wherein both of said leads are welded to said silicon nitride heater, the weld being located within said insulating housing.
4. An ignition bar as recited in claim 1, further comprising a sleeve disposed inside the tail end of said insulating housing, said two leads passing through said sleeve.
5. An ignition bar according to claim 4, wherein the sleeve has an "8" cross-section and comprises two separate through holes, and the two leads extend through the two through holes, respectively.
6. An ignition bar as recited in claim 4, further comprising a flange disposed outside of said tail end of said insulating housing, said two leads extending through and being secured to said flange.
7. An ignition device comprising an ignition rod according to any one of claims 1 to 6, and further comprising a combustion chamber, wherein the combustion chamber comprises a chamber wall, the chamber wall is provided with an ignition hole, the ignition rod is arranged in the ignition hole, one end of the silicon nitride heating body extending from the head end of the insulating shell to the outside of the insulating shell is positioned at the inner side of the chamber wall, and the parts of the two leads extending outwards from the tail end of the insulating shell are positioned at the outer side of the chamber wall.
8. The ignition device of claim 7 wherein said chamber wall is further provided with a combustible material placement hole through which combustible material is placed inside said chamber wall above said silicon nitride heater.
9. The ignition device of claim 8, wherein the combustion chamber further comprises a bottom portion connected to the chamber wall, and a plurality of air vents are formed in the chamber wall and/or the bottom portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410176924.0A CN117927970A (en) | 2024-02-08 | 2024-02-08 | Ignition rod and ignition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410176924.0A CN117927970A (en) | 2024-02-08 | 2024-02-08 | Ignition rod and ignition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117927970A true CN117927970A (en) | 2024-04-26 |
Family
ID=90763065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410176924.0A Pending CN117927970A (en) | 2024-02-08 | 2024-02-08 | Ignition rod and ignition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117927970A (en) |
-
2024
- 2024-02-08 CN CN202410176924.0A patent/CN117927970A/en active Pending
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |