Ignition device and burner containing it

Abstract

This invention discloses an ignition device and a burner including the same. The ignition device includes an ignition needle and a grounding metal ring. The ignition needle includes an insulator and an electrode needle. The insulator covers the electrode needle, with the top of the electrode needle protruding from the top surface of the insulator. The grounding metal ring is fitted onto the outer circumferential surface of the insulator. The minimum distance between the top of the grounding metal ring and the tip of the electrode needle protruding from the insulator is H; wherein 6mm < H ≤ 15mm, and the minimum distance between the top of the grounding metal ring and the tip of the electrode needle is greater than the minimum distance between the tip of the electrode needle and the burner cap. By fitting the grounding metal ring onto the outer circumferential surface of the insulator, the charge on the ignition needle head is conducted through the grounding metal ring, causing the grounding metal ring to disrupt the charge stability of the ignition needle head, thereby greatly reducing the ignition threshold. This allows the ignition needle head to break through the air and discharge to the burner cap, improving the ignition success rate of the ignition device.

Description

Technical Field

[0001] The present invention relates to an ignition device and a burner comprising the same. Background Technology

[0002] Most existing gas stoves use an ignition needle pulse discharge method to ignite the gas. The ignition needle is usually located near the burner outlet of the gas stove. During ignition, a protrusion is designed under the burner cap corresponding to the position of the ignition needle. The discharge end of the ignition needle and the corresponding protrusion under the burner cap generate a high voltage, which breaks down the air between the burner cap and the gas cap to form an electric arc, thereby igniting the gas ejected from the burner outlet and realizing the ignition of the gas stove.

[0003] Currently, after a period of use, oil and other contaminants can accumulate on the ignition needle of a gas stove, causing it to become greasy and unable to generate a continuous ignition spark, resulting in ignition failure. Even with a shield on the burner cap to cover the tip of the ignition needle, some oil will inevitably remain, significantly impacting the ignition success rate. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the ignition needle is easily covered with a layer of oil stains, which causes the ignition spark to fail to be generated normally and continuously, resulting in ignition failure. The present invention provides an ignition device and a burner including the present invention.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] An ignition device is characterized in that it includes an ignition needle and a grounding metal ring. The ignition needle includes an insulator and an electrode needle. The insulator covers the electrode needle, and the top of the electrode needle protrudes from the top surface of the insulator. The grounding metal ring is sleeved on the outer circumferential surface of the insulator. The minimum distance between the top of the grounding metal ring and the tip of the electrode needle protruding from the insulator is H; wherein 6mm < H ≤ 15mm, and the minimum distance between the top of the grounding metal ring and the tip of the electrode needle protruding from the insulator is greater than the minimum distance between the tip of the electrode needle and the burner cap.

[0007] In this design, the aforementioned structure is used. A grounding metal ring is fitted around the outer circumference of the insulator. During ignition, the charge on the ignition needle tip is conducted through the grounding metal ring, which disrupts the charge stability of the ignition needle tip, thus significantly reducing the ignition threshold. Simultaneously, the grounding metal ring is directly connected to the base for grounding, while the burner is indirectly fixed to the chassis and grounded, forming a circuit. In other words, oil contamination raises the ignition threshold, while the grounding metal ring further lowers it through grounding, enabling the ignition needle tip to break through the air and discharge to the burner cap. This ensures the ignition needle's ability to generate an electric spark, greatly improving the ignition success rate of the ignition device.

[0008] By ensuring that the minimum distance between the top of the grounding metal ring and the tip of the electrode needle exposed on the insulator is greater than the minimum distance between the tip of the electrode needle and the burner cap, the tip of the electrode needle discharges to the nearest inner ring burner cap. This effectively prevents the tip of the electrode needle from directly discharging to the top of the grounding metal ring, ensuring the normal use of the ignition needle under normal circumstances, and thus greatly improving the ignition success rate of the ignition device.

[0009] The minimum distance between the top of the grounding metal ring and the tip of the electrode needle should be greater than 6mm. If the minimum distance is less than or equal to 6mm, the minimum distance between the head of the ignition needle and the uppermost edge of the grounding metal ring is similar to the distance between the head of the ignition needle and the inner ring of the burner cap. Under normal use, the head of the ignition needle may discharge directly to the grounding metal ring, resulting in inaccurate discharge. 6mm < H is the distance at which an electric spark can be generated under normal conditions.

[0010] If the minimum distance between the top of the grounding metal ring and the head of the electrode needle is too large, firstly, the structure of the ignition needle limits the installation of the grounding metal ring; secondly, the greater the distance, the weaker the impact on the charge stability of the ignition needle head, thus reducing the ability to improve ignition performance. Therefore, the minimum distance between the top of the grounding metal ring and the head of the electrode needle should be controlled to be no more than 15mm. The closer the grounding metal ring is to the head of the ignition needle, the greater the impact of disrupting charge stability on the tip, the easier it is to improve the effect, effectively disrupt the charge stability of the ignition needle head, reduce the ignition threshold, and greatly improve the ignition success rate of the ignition device.

[0011] Preferably, 10mm ≤ H.

[0012] Preferably, the minimum distance between the top of the grounding metal ring and the tip of the electrode needle is greater than the minimum distance between the tip of the electrode needle and the corresponding ignition protrusion on the lower surface of the flame cap.

[0013] Preferably, the top end of the insulator has an umbrella-shaped structure, and the grounding metal ring is fitted onto the insulator from the bottom end, with the top end of the grounding metal ring abutting against the bottom surface of the umbrella-shaped structure, so that the umbrella-shaped structure can be used to shield the grounding metal ring.

[0014] In this design, the aforementioned structural form utilizes an umbrella-shaped structure to shield and guide the grounding metal ring, preventing oil from dripping onto its tip. This effectively avoids the grounding metal ring being completely encased in oil, which could severely impact the charge stability of the ignition needle tip and significantly improve the stability of the ignition device. Simultaneously, the umbrella-shaped structure directs the shielded oil into the interior of the grounding metal ring, specifically into the gap between the grounding metal ring and the insulator, ensuring the stability of the grounding metal ring and enhancing the ignition effect.

[0015] Preferably, the bottom surface of the umbrella-shaped structure has an inwardly recessed groove, and the top end of the grounding metal ring is inserted into the groove.

[0016] In this design, the aforementioned structural form ensures that the top of the grounding metal ring is inserted into a slot during assembly. Even with significant oil contamination, the oil remains only on the outside of the grounding metal ring and cannot penetrate its interior, guaranteeing its stability and thus improving the ignition success rate of the ignition device. Furthermore, inserting the top of the grounding metal ring into the slot allows for precise positioning and installation, effectively preventing misalignment during use and resulting in greater stability.

[0017] Preferably, the inner diameter of the grounding metal ring is 0.1 to 0.3 mm larger than the outer diameter of the insulator at the location corresponding to the grounding metal ring on the outer circumference of the insulator;

[0018] Preferably, the inner diameter of the grounding metal ring is 0.2 mm larger than the outer diameter of the insulator at the location corresponding to the grounding metal ring on the outer circumference of the insulator.

[0019] In this solution, the above-mentioned structural form ensures the normal installation of the grounding metal ring. At the same time, the grounding metal ring fits more closely against the ignition needle, which strengthens its ability to disrupt the charge stability of the ignition needle head, further reducing the ignition threshold and greatly improving the ignition success rate of the ignition device.

[0020] Preferably, the outer surface of the grounding metal ring is provided with a downwardly inclined guide groove.

[0021] In this solution, the above-mentioned structure is adopted. When oil flows down the outer wall from the head of the ignition needle, the oil can be guided out of the grounding metal ring through the guide groove, thereby draining the oil from the surface of the grounding metal ring more quickly. At the same time, the adhesion area of ​​the oil on the surface of the grounding metal ring is reduced. Even if there is a lot of oil, the oil will only stick to the outside of the grounding metal ring and will not completely cover the grounding metal ring, thereby reducing the impact on ignition and ensuring the ignition success rate.

[0022] Preferably, the thickness of the grounding metal ring is not less than 0.5 mm;

[0023] And / or, the grounding metal ring is made of copper.

[0024] In this solution, the above-mentioned structural form is adopted to ensure that the grounding metal ring has a certain structural strength, thus guaranteeing the stability of the ignition device.

[0025] In addition, copper has good electrical conductivity and is inexpensive.

[0026] A burner characterized in that it includes an ignition device as described above.

[0027] In this design, the aforementioned structure is used. A grounding metal ring is fitted onto the outer circumference of the insulator. During ignition, the charge on the ignition needle tip is conducted through the grounding metal ring, which disrupts the charge stability of the ignition needle tip, thereby significantly reducing the ignition threshold. Simultaneously, the grounding metal ring forms a grounding circuit; that is, while oil contamination raises the ignition threshold, the grounding metal ring further lowers it through grounding, enabling the ignition needle tip to break through the air and discharge to the burner cap. This ensures the ignition needle's ability to generate an electric spark, greatly improving the ignition success rate of the ignition device.

[0028] In addition, under normal conditions, the distance at which the ignition needle can generate an electric spark effectively prevents the tip of the electrode needle from directly discharging to the top of the grounding metal ring; at the same time, it effectively disrupts the charge stability of the ignition needle head, reduces the ignition threshold, and greatly improves the ignition success rate of the ignition device.

[0029] Preferably, the burner further includes a base, the ignition needle is mounted on the base, and the bottom surface of the grounding metal ring is sealed and abutted against the base.

[0030] In this solution, the above-mentioned structural form is adopted to prevent oil from flowing into the inner sleeve of the base, ensuring good grounding of the grounding metal ring, thereby improving the ignition effect of the ignition device.

[0031] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0032] The positive and progressive effects of this invention are as follows:

[0033] The ignition device and burner comprising the present invention utilize a grounding metal ring fitted around the outer periphery of an insulator. During ignition, the charge on the ignition needle tip is conducted through the grounding metal ring, which disrupts the charge stability of the ignition needle tip, thereby significantly reducing the ignition threshold. Furthermore, the grounding metal ring serves as a grounding element, further reducing the ignition threshold and enabling the ignition needle tip to break through the air and discharge to the flame cap, thus ensuring the ignition needle's ability to generate an electric spark and improving the ignition success rate of the ignition device. Simultaneously, by ensuring a minimum distance H between the top of the grounding metal ring and the tip of the electrode needle exposed on the insulator (6mm < H ≤ 15mm), the ignition needle tip is guaranteed to discharge to the flame cap under normal conditions, effectively preventing the electrode needle tip from directly discharging to the grounding metal ring. This effectively disrupts the charge stability of the ignition needle tip, reducing the ignition threshold and significantly improving the ignition success rate of the ignition device. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the burner structure according to an embodiment of the present invention.

[0035] Figure 2 This is a partially enlarged schematic diagram of the burner according to an embodiment of the present invention.

[0036] Figure 3 This is a schematic diagram of the ignition device according to an embodiment of the present invention.

[0037] Figure 4 This is a schematic diagram of the internal structure of the ignition device according to an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] Ignition needle 1

[0040] Electrode needle 11

[0041] Insulator 12

[0042] Umbrella structure 121

[0043] Card slot 122

[0044] Electrode needle body

[0045] Grounding metal ring 2

[0046] Guide channel 21

[0047] Inner ring fire cap 10

[0048] 101 bumps

[0049] Outer ring fire cap 20

[0050] Base 30

[0051] Drainage port 301 Detailed Implementation

[0052] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0053] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the present invention discloses a burner, which includes an ignition device, an inner ring burner cap 10, an outer ring burner cap 20, and a base 30. The inner ring burner cap 10 and the outer ring burner cap 20 are both disposed on the base 30. The ignition device is mounted on the base 30 and discharges to the inner ring burner cap 10 to achieve ignition.

[0054] The ignition device includes an ignition needle 1 and a grounding metal ring 2. The ignition needle 1 includes an insulator 12 and an electrode needle 11. The insulator 12 covers the electrode needle 11, and the top of the electrode needle 11 protrudes from the top surface of the insulator 12. The grounding metal ring 2 is fitted on the outer circumferential surface of the insulator 12. The minimum distance between the top of the grounding metal ring 2 and the tip of the electrode needle 11 exposed on the insulator 12 is H; wherein, 6mm < H ≤ 15mm, and the minimum distance between the top of the grounding metal ring 2 and the tip of the electrode needle 11 is greater than the minimum distance between the tip of the electrode needle 11 and the inner ring flame cap 10.

[0055] The insulator 12 is installed on the base 30 and covers the electrode needle 11. The top of the electrode needle 11 is exposed on the top surface of the insulator 12. Under normal circumstances, when the stove is ignited, the igniter will give the ignition needle 1 a charge. The charge will be distributed on the head of the ignition needle 1. That is, both the insulator 12 and the electrode needle 11 will have charge distribution. The tip of the electrode needle 11 is closest to the protrusion 101 of the inner ring burner cap 10 corresponding to the ignition. It will break down the air and generate an electric spark to discharge to the inner ring burner cap 10.

[0056] When oil sludge covers the head of the ignition needle 1, the needle needs to break through the oil and air to generate an electric spark. At this point, the charge distribution at the head of the needle is very stable. The more stable the charge, the more difficult it is to break through and generate an electric spark, thus significantly increasing the ignition threshold and making it difficult for the needle to ignite normally. By using a grounding metal ring 2 fitted around the outer circumference of the insulator 12, the charge at the head of the ignition needle 1 is conducted through the grounding metal ring 2 during ignition. This causes the grounding metal ring 2 to disrupt the charge stability at the head of the ignition needle 1, thereby significantly reducing the ignition threshold. Simultaneously, the grounding metal ring 2 can also reduce the ignition threshold if it is not grounded, but the effect is not as good as when it is grounded. When the oil completely covers the grounding metal ring 2, it becomes ineffective. In this embodiment of the invention, the grounding metal ring 2 is directly connected to the base 30 to achieve grounding, while the burner is indirectly fixed to the chassis and grounded, thus forming a circuit. That is, the oil stains increase the ignition threshold, and the grounding metal ring 2 further reduces the ignition threshold through grounding, so that the head of the ignition needle 1 can break through the air to discharge to the inner ring burner cap 10, thereby ensuring the ability of the ignition needle 1 to generate an electric spark and greatly improving the ignition success rate of the ignition device.

[0057] like Figure 2 As shown, the minimum distance between the top of the grounding metal ring 2 and the tip of the electrode needle 11 is greater than the minimum distance between the tip of the electrode needle 11 and the inner ring burner cap 10. This ensures that the tip of the electrode needle 11 discharges to the nearest inner ring burner cap 10, effectively preventing the tip of the electrode needle 11 from directly discharging to the top of the grounding metal ring 2, guaranteeing the normal use of the ignition needle 1 under normal circumstances, thereby greatly improving the ignition success rate of the ignition device. Preferably, the minimum distance between the top of the grounding metal ring 2 and the tip of the electrode needle 11 is greater than the distance between the tip of the electrode needle 11 and the corresponding ignition protrusion 101 on the lower surface of the inner ring burner cap 10.

[0058] The minimum distance H between the top of the grounding metal ring 2 and the tip of the electrode needle 11 is 6mm < H ≤ 15mm. If H is less than or equal to 6mm, the minimum distance between the head of the ignition needle 1 and the uppermost edge of the grounding metal ring 2 is similar to the distance between the head of the ignition needle 1 and the inner ring flame cap 10. Under normal use, the head of the ignition needle 1 may directly discharge to the grounding metal ring 2, resulting in inaccurate discharge. 6mm < H is the distance at which an electric spark can be generated under normal conditions. Preferably, 10mm ≤ H, the minimum distance between the top of the grounding metal ring 2 and the tip of the electrode needle 11 is greater than or equal to 10mm.

[0059] If the minimum distance between the top of the grounding metal ring 2 and the head of the electrode needle 11 is too large, firstly, it is due to the structural limitations of the ignition needle 1, which makes the installation of the grounding metal ring 2 difficult; secondly, the farther the distance to the head of the ignition needle 1, the weaker the impact on the charge stability of the head, thus reducing the ability to improve ignition performance. Therefore, the minimum distance between the top of the grounding metal ring 2 and the head of the electrode needle 11 is controlled to be no more than 15mm. The closer the grounding metal ring 2 is to the head of the ignition needle 1, the greater the impact of disrupting charge stability on the tip, and the easier it is to improve the effect. This effectively disrupts the charge stability of the head of the ignition needle 1, reduces the ignition threshold, and greatly improves the ignition success rate of the ignition device.

[0060] In this embodiment, as Figure 3 and Figure 4 As shown, the insulator 12 has an umbrella-shaped structure 121 at its top. The grounding metal ring 2 is fitted onto the insulator 12 from its bottom end, with the top of the grounding metal ring 2 abutting against the bottom surface of the umbrella-shaped structure 121. This allows the umbrella-shaped structure 121 to shield the grounding metal ring 2. The umbrella-shaped structure 121 acts as a shield and guide for the grounding metal ring 2, preventing oil from dripping onto its top. This effectively avoids the grounding metal ring 2 being completely covered by oil, which would severely affect the charge stability of the ignition needle 1 head and greatly improve the stability of the ignition device. Simultaneously, the umbrella-shaped structure 121 guides the shielding oil into the interior of the grounding metal ring 2, that is, into the gap between the grounding metal ring 2 and the insulator 12, ensuring the stability of the grounding metal ring 2 and improving the ignition effect.

[0061] The top of the insulator 12 acts as a guide through the umbrella-shaped structure 121, allowing oil to flow outwards and downwards. The umbrella-shaped structure 121 has an inclination angle of 30 to 40 degrees, with almost no horizontal surface. When oil or other substances drip onto the umbrella-shaped structure 121, they can flow directly downwards along the steep slope, preventing oil from sticking to the head of the ignition needle 1. Preferably, the inclination angle of the umbrella-shaped structure 121 is 35 degrees.

[0062] The outer surface of the grounding metal ring 2 is provided with a downwardly extending guide groove 21. When oil flows down the outer wall from the head of the ignition needle 1, the guide groove 21 can guide the oil out of the grounding metal ring 2, thereby draining the oil from the surface of the grounding metal ring 2 more quickly. At the same time, it reduces the adhesion area of ​​the oil on the surface of the grounding metal ring 2, so that even if there is a lot of oil, the oil will only stick to the outside of the grounding metal ring 2 and will not completely cover the grounding metal ring 2, thereby reducing the impact on ignition and ensuring the ignition success rate.

[0063] In this embodiment, a drain port 301 is designed on the base 30, and the lowest point of the guide groove 21 intersects with and is connected to the drain port 301. The drain port 301 is located at the intersection of the outer ring flame cap 20 and the base 30. The guide groove 21 can guide the oil to the drain port 301, and the drain port 301 will increase the drainage speed and prevent the oil from accumulating at the junction of the two after flowing down.

[0064] The bottom surface of the umbrella-shaped structure 121 has an inwardly recessed groove 122 into which the top of the grounding metal ring 2 is inserted. During assembly, the top of the grounding metal ring 2 is inserted into the groove 122, ensuring that even with heavy oil stains, the oil only adheres to the outside of the grounding metal ring 2 and cannot enter its interior, thus guaranteeing its stability and improving the ignition success rate of the ignition device. Simultaneously, inserting the top of the grounding metal ring 2 into the groove 122 allows for precise positioning and installation, effectively preventing misalignment during use and resulting in higher stability. The minimum distance between the uppermost end of the grounding metal ring 2 exposed to the insulator 12 and the tip of the electrode needle 11 exposed to the insulator 12 is H, which effectively prevents the tip of the electrode needle 11 from directly discharging to the uppermost end of the grounding metal ring 2 exposed to the insulator 12. The minimum distance between the uppermost end of the grounding metal ring 2 exposed to the insulator 12 and the tip of the electrode needle body is controlled to be no more than 15mm, thereby greatly improving the ignition success rate of the ignition device.

[0065] The ignition needle 1 is mounted on the base 30 via an insulator 12, and the bottom surface of the grounding metal ring 2 is sealed against the base 30. Specifically, the bottom surface of the grounding metal ring 2 is flat, and the top surface of the outer sleeve on the base 30 that fixes the ignition needle 1 is also flat. The bottom surface of the grounding metal ring 2 and the top surface of the outer sleeve on the base 30 are fitted together to achieve a seal, thereby preventing oil from flowing into the inner part of the outer sleeve on the base 30, ensuring good grounding of the grounding metal ring 2, and thus improving the ignition effect of the ignition device.

[0066] like Figure 4As shown, the inner diameter of the grounding metal ring 2 needs to be as small as possible, slightly larger than the outer diameter of the corresponding grounding metal ring 2 on the ignition needle 1. Specifically, the inner diameter L2 of the grounding metal ring 2 is 0.1–0.3 mm larger than the outer diameter L1 of the corresponding grounding metal ring 2 on the outer circumference of the insulator 12. During installation, the grounding metal ring 2 is fitted onto the insulator 12 from the bottom upwards, so that the top of the grounding metal ring 2 is inserted into the slot 122 for positioning, ensuring proper installation of the grounding metal ring 2. Simultaneously, the grounding metal ring 2 fits more closely against the ignition needle 1, increasing its ability to disrupt the charge stability of the ignition needle 1 head, further reducing the ignition threshold and significantly improving the ignition success rate of the ignition device. Preferably, the inner diameter L2 of the grounding metal ring 2 is 0.2 mm larger than the outer diameter L1 of the corresponding grounding metal ring 2 on the outer circumference of the insulator 12.

[0067] In this embodiment, the grounding metal ring 2 is made of copper, which has good electrical conductivity and is low in cost. The insulator 12 is made of ceramic, which has good insulation properties and is also low in cost.

[0068] The thickness of the grounding metal ring 2 is not less than 0.5mm, and the wall thickness of the grounding metal ring 2 is greater than or equal to 0.5mm, so that the grounding metal ring 2 has a certain structural strength and ensures the stability of the ignition device.

[0069] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An ignition device, characterized in that, It includes an ignition needle and a grounding metal ring. The ignition needle includes an insulator and an electrode needle. The insulator covers the electrode needle, and the top of the electrode needle protrudes from the top surface of the insulator. The grounding metal ring is fitted onto the outer circumferential surface of the insulator. The minimum distance between the top of the grounding metal ring and the tip of the electrode needle protruding from the insulator is H; wherein, 6mm < H ≤ 15mm, and the minimum distance between the top of the grounding metal ring and the tip of the electrode needle is greater than the minimum distance between the tip of the electrode needle and the burner cap. The insulator has an umbrella-shaped structure at its top end. The grounding metal ring is fitted onto the insulator from its bottom end, and the top end of the grounding metal ring abuts against the bottom surface of the umbrella-shaped structure, so that the umbrella-shaped structure can shield the grounding metal ring.

2. The ignition device as described in claim 1, characterized in that, 10mm≤H.

3. The ignition device as described in claim 1, characterized in that, The minimum distance between the top of the grounding metal ring and the tip of the electrode needle exposed in the insulator is greater than the minimum distance between the tip of the electrode needle and the flame cap.

4. The ignition device as described in claim 1, characterized in that, The bottom surface of the umbrella-shaped structure has an inwardly recessed groove, and the top end of the grounding metal ring is inserted into the groove.

5. The ignition device as described in claim 1, characterized in that, The inner diameter of the grounding metal ring is 0.1 to 0.3 mm larger than the outer diameter of the insulator at the location corresponding to the grounding metal ring on the outer circumference.

6. The ignition device as described in claim 5, characterized in that, The inner diameter of the grounding metal ring is 0.2 mm larger than the outer diameter of the insulator at the location corresponding to the grounding metal ring on the outer circumference.

7. The ignition device as described in claim 1, characterized in that, The outer surface of the grounding metal ring is provided with a downwardly inclined guide groove.

8. The ignition device as described in claim 1, characterized in that, The thickness of the grounding metal ring is not less than 0.5 mm; And / or, the grounding metal ring is made of copper.

9. A burner, characterized in that, It includes the ignition device as described in any one of claims 1-8.

10. The burner as claimed in claim 9, characterized in that, The burner also includes a base, the ignition needle is mounted on the base, and the bottom surface of the grounding metal ring is sealed and abutted against the base.

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