Ignition device and stove burner comprising same
By designing the combined structure of the electrode needle and the metal grounding ring, the problem of the ignition needle being easily contaminated by oil is solved, the stability and reliability of the ignition device are ensured, normal spark generation is achieved, and user experience is improved.
Patent Information
- Application Number
- CN202420109928.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-17
AI Technical Summary
The existing ignition needles are easily contaminated by oil pollution, resulting in the inability to generate ignition sparks normally and continuously, causing ignition failure and affecting the user experience.
Design an ignition device, including an electrode needle and a metal grounding ring, the top surface height of the exposed insulator on the top of the electrode needle is greater than 3mm, and a combination of an umbrella insulator structure and a metal grounding ring is adopted to ensure that oil stains do not drip to the top of the grounding ring. The 0.3mm gap and oil barrier tank reduce oil infiltration and improve stability.
It effectively avoids oil pollution affecting the discharge of the grounding ring, ensures the stability and reliability of the ignition device, ensures normal spark generation, and improves user experience.
Smart Images
Figure CN222164890U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an ignition device and a stove burner comprising the ignition device. Background Art
[0002] At present, most household gas stoves use ignition needle pulse discharge to ignite gas. However, due to the structural design defects of the existing ignition needle, oil or the like may stick to the ignition needle or even wrap around the needle tip, which will cause the ignition spark to fail to be generated normally and continuously, resulting in ignition failure, which seriously affects the user experience. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the defect in the prior art that the ignition needle is easily contaminated by oil, resulting in failure to generate ignition sparks normally and continuously, and thus causing ignition failure, and to provide an ignition device and a stove burner including the same.
[0004] The utility model solves the above technical problems through the following technical solutions:
[0005] An ignition device, characterized in that it includes an ignition needle and a metal grounding ring, the ignition needle includes an electrode needle and an insulator, the insulator is covered on the electrode needle, the top of the electrode needle is exposed from the top surface of the insulator, and the height of the electrode needle exposed from the top surface of the insulator is greater than 3 mm, the metal grounding ring is sleeved on the outer peripheral surface of the insulator, the top of the insulator has an umbrella-shaped structure, the top of the metal grounding ring is sealed against the bottom surface of the umbrella-shaped structure, and the outer side of the metal grounding ring does not exceed the outer edge of the umbrella-shaped structure.
[0006] In this solution, the above-mentioned structural form is adopted, and the height of the top of the electrode needle exposed from the top surface of the insulator is greater than 3mm. Because oil has tension and viscosity, the height of the oil stain will be maintained at about 1.5mm. Therefore, even if there is a certain amount of residual oil stain, it can ensure that there is a very small amount of oil attached to the tip head at a height of about 1.5mm, ensuring normal ignition and spark generation.
[0007] In addition, the top of the insulator is an umbrella-shaped structure, and the outer side of the metal grounding ring sleeved on its outer peripheral surface does not exceed the outer edge of the umbrella-shaped structure. The umbrella-shaped structure will shield and guide the metal grounding ring, so that impurities such as oil will not drip onto the top of the metal grounding ring, effectively avoiding the grounding metal ring being completely wrapped by oil and seriously affecting and destroying the discharge of the grounding metal ring, thereby greatly improving the stability of the ignition device.
[0008] Preferably, the gap between the inner wall surface of the metal grounding ring and the outer peripheral surface of the insulator corresponding to the metal grounding ring is 0.3 mm.
[0009] In this solution, the above-mentioned structural form is adopted to avoid the problem that when the distance between the upper end of the metal grounding ring and the insulator is too small, a small amount of oil will penetrate into the gap between the copper ring and the insulator, which will cause the gap between the copper ring and the insulator to be completely filled with oil, affecting ignition. The 0.3mm gap has the ability to drain a small amount of oil leakage, ensuring that the space between the metal grounding ring and the insulator is not filled with oil; at the same time, the 0.3mm gap also ensures the thickness of the metal grounding ring, ensuring that the top of the metal grounding ring and the bottom of the umbrella-shaped structure of the insulator have sufficient contact area, which can achieve good sealing and reduce the probability of oil penetration.
[0010] Preferably, the inner wall surface of the metal grounding ring has a fitting portion close to the insulator.
[0011] In this solution, the above-mentioned structural form is adopted to reduce the shaking between the metal grounding ring and the insulator, thereby ensuring the reliability and stability of the connection.
[0012] Preferably, the fitting portion is located at the lower end of the inner wall surface of the metal grounding ring.
[0013] In this solution, the above-mentioned structural form is adopted, which not only takes into account the oil drainage function of the large gap at the upper end of the metal grounding ring, but also ensures the reliability and stability of the installation of the metal grounding ring. At the same time, the fitting part at the lower end can also effectively reduce the oil pollution in the large gap at the upper end from continuing to flow into the tail of the ignition needle.
[0014] Preferably, the angle of the umbrella-shaped structure is 30-40 degrees.
[0015] In this solution, the above-mentioned structural form is adopted, which can not only allow the bottom surface of the umbrella structure to have enough area to cover the metal grounding ring, but also can well guide the oil stains dripping on the slope.
[0016] Preferably, the bottom surface of the umbrella-shaped structure is a plane and fits with the top surface of the metal grounding ring.
[0017] In this solution, the above-mentioned structural form is adopted, and the bottom surface is a flat regular umbrella shape, which ensures the structural strength of the insulator. At the same time, the bottom surface of the top umbrella structure of the insulator and the top surface of the metal grounding ring are fitted together through the planes, which also ensures the reliability of the sealing.
[0018] Preferably, the outer side of the lower end of the metal grounding ring has an inwardly recessed oil retaining groove.
[0019] In this solution, the above-mentioned structural form is adopted. When the oil flows down along the metal grounding ring, this groove can guide a certain amount of oil into the inside of the groove, slowing down the flow rate of the oil, reducing the oil from penetrating from the matching surface between the lower end of the metal grounding ring and the base, ensuring the grounding effect of the metal grounding ring. At the same time, this groove plays an indicator role, which is easy to assemble and identify.
[0020] Preferably, the outer peripheral surface of the electrode needle has a limiting boss protruding outward, and the limiting boss is exposed from the insulator and abuts against the top end of the insulator.
[0021] In this solution, the above structural form is adopted, and the limiting boss ensures that the height of the electrode needle exposed from the insulator meets the requirement of being greater than 3 mm. At the same time, it is convenient for installation and setting.
[0022] A stove burner comprises the ignition device as described above.
[0023] In the present solution, the above-mentioned structural form is adopted, and the height of the top of the electrode needle of the ignition device of the stove burner exposed above the top surface of the insulator is greater than 3 mm. Because oil has tension and viscosity, the height of the oil stain will be maintained at about 1.5 mm. Therefore, even if there is a certain amount of residual oil stain, it can be ensured that there is a very small amount of oil attached to the tip of about 1.5 mm, ensuring normal ignition and spark generation.
[0024] In addition, the top of the insulator is an umbrella-shaped structure, and the outer side of the metal grounding ring sleeved on its outer peripheral surface does not exceed the outer edge of the umbrella-shaped structure. The umbrella-shaped structure will shield and guide the metal grounding ring, so that oil will not drip onto the top of the metal grounding ring, effectively avoiding the grounding metal ring being completely wrapped by oil and seriously affecting and destroying the discharge of the grounding metal ring, thereby greatly improving the stability of the ignition device.
[0025] Preferably, the stove burner further comprises a base, the ignition device is mounted and connected to the base, and the bottom surface of the metal grounding ring is sealed and abutted against the base.
[0026] In this solution, the above-mentioned structural form is adopted to effectively reduce the amount of oil stains that penetrate into the bottom surface of the metal grounding ring on the base, ensure good grounding of the grounding metal ring, and improve the ignition effect of the ignition device.
[0027] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.
[0028] The positive and progressive effects of the utility model are:
[0029] The ignition device of the utility model and the stove burner including the same are sleeved on the outer peripheral surface of the insulator through a metal grounding ring, and the top of the electrode needle of the ignition device of the stove burner is exposed to a height of more than 3mm from the top surface of the insulator, ensuring normal ignition and spark generation. The top of the insulator has an umbrella-shaped structure, which will shield and guide the metal grounding ring, so that oil will not drip onto the top of the metal grounding ring, effectively avoiding the grounding metal ring being completely wrapped by oil and seriously affecting and destroying the discharge of the grounding metal ring, and greatly improving the stability of the ignition device. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 The figure is a schematic diagram of the structure of a stove burner according to an embodiment of the utility model.
[0031] Figure 2 It is a partial enlarged schematic diagram of a stove burner according to an embodiment of the utility model.
[0032] Figure 3 It is a structural schematic diagram of an ignition device according to an embodiment of the utility model.
[0033] Description of reference numerals:
[0034] Ignition needle 1
[0035] Electrode needle 11
[0036] Limiting boss 111
[0037] Insulator 12
[0038] Umbrella structure 121
[0039] Rounded Corner 122
[0040] Metal grounding ring 2
[0041] Oil retaining groove 21
[0042] Lamination section 22
[0043] Base 30 DETAILED DESCRIPTION
[0044] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.
[0045] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the utility model discloses a stove burner, which includes an ignition device and a base 30. The ignition device is installed on the base 30 to discharge to achieve ignition.
[0046] The ignition device includes an ignition needle 1 and a metal grounding ring 2. The ignition needle 1 includes an electrode needle 11 and an insulator 12. The insulator 12 is covered on the electrode needle 11. The top of the electrode needle 11 is exposed on the top surface of the insulator 12. The metal grounding ring 2 is sleeved on the outer peripheral surface of the insulator 12. The metal grounding ring 2 can introduce adverse charges on the electrode needle 11 and the insulator 12 into the base 30, breaking the charge balance and making it easier for the ignition device to achieve tip discharge ignition.
[0047] Depend on Figure 2 and Figure 3It can be seen that the height of the electrode needle 11 exposed from the top surface of the insulator 12 is H, H>3mm. When oil and other dirt drip onto the head of the ignition needle 1, there will inevitably be some oil residue. The needle head of the electrode needle 11 is more than 3mm, because the oil has tension and adhesion, there will be a certain height, the height is about 1.5mm, so even if there is a certain amount of residual oil, it can ensure that there is about 1.5mm of very little oil attached to the tip of the electrode needle 11, thereby ensuring that the electrode needle 11 can ignite normally to generate sparks. In this embodiment, H is 4.2mm.
[0048] The outer peripheral surface of the electrode needle 11 has a limiting boss 111 protruding outward, and the limiting boss 111 is exposed from the insulator 12 and abuts against the top of the insulator 12. Figure 3 As shown, the limiting boss 111 is a flat cylinder with a very low height. This structure can stably and reliably install the electrode needle 11 at a required height position.
[0049] The top of the insulator 12 has an umbrella-shaped structure 121, the top of the metal grounding ring 2 is sealed against the bottom surface of the umbrella-shaped structure 121, and the outer side of the metal grounding ring 2 does not exceed the outer edge of the umbrella-shaped structure 121. Figure 3 As shown, the umbrella-shaped structure 121 can effectively shield the oil stains dripping onto the top surface of the metal grounding ring 2, ensuring that the metal grounding ring 2 can be normally grounded and conductive, thereby improving the ignition success rate of the ignition device.
[0050] The angle of the umbrella-shaped structure 121 of the insulator 12 is 30-40 degrees, and the bottom surface of the umbrella-shaped structure 121 is a plane and fits with the top surface of the metal grounding ring 2. Figure 3 As shown, in this embodiment, the top surface of the umbrella-shaped structure 121 has almost no horizontal surface. When oil or the like drips onto the head of the ignition needle 1, it will flow directly downward along the 30-40 degree large slope of the umbrella-shaped structure 121 to prevent the oil from sticking to the head of the ignition needle 1. The bottom surface of the umbrella-shaped structure 121 is a flat regular structure, which can ensure the strength of the insulator 12. In addition, it can also ensure that its bottom surface and the top surface of the metal grounding ring 2 have the largest area of sealing matching surface, thereby effectively blocking the infiltration of oil in this part, ensuring the relative cleanliness of the ignition needle 1, and ensuring the reliability of the normal operation of the ignition needle 1. Preferably, the angle of the umbrella-shaped structure 121 is 35 degrees.
[0051] like Figure 3As shown, the gap D between the inner wall surface of the metal grounding ring 2 and the outer peripheral surface of the insulator 12 at the corresponding metal grounding ring 2 is 0.3mm. Because in the actual production process, the bottom surface of the umbrella-shaped structure 121 of the insulator 12 and the top surface of the metal grounding ring 2 cannot be completely matched and sealed. Therefore, when the oil flows onto the metal grounding ring 2, a small amount of oil will inevitably flow through the non-sealed part to the gap between them. The more the area of the metal grounding ring 2 wrapped by the oil, the greater the damage to ignition. Therefore, the gap between the metal grounding ring 2 and the insulator 12 cannot be too small. When the gap is particularly small, such as the gap is 0.1mm, a small amount of oil will penetrate into the metal grounding ring 2 and the insulator 12. The gap between the insulator 12 is completely filled, which affects the ignition. At the same time, it should be considered that the thicker the metal grounding ring 2 is, the larger the contact area between the top surface of the metal grounding ring 2 and the insulator 12 is, the better the sealing is, and the lower the probability of oil infiltration is. In order to ensure the above points, the designed single-side distance between the copper ring and the ceramic body is 0.3mm. This larger gap has the ability to drain a small amount of oil leakage, thereby ensuring that the space between the upper end of the metal grounding ring 2 and the insulator 12 is not filled with oil, reducing the harm of oil to discharge ignition, and improving the working stability of the metal grounding ring 2.
[0052] like Figure 3 As shown, the inner wall surface of the metal grounding ring 2 has a fitting portion 22 close to the insulator 12. The gap between the metal grounding ring 2 and the insulator 12 will cause the metal grounding ring 2 to shake. It is necessary to ensure that even if the metal grounding ring 2 shakes to the most extreme position, its outer side will not exceed the outermost edge of the umbrella-shaped structure 121 of the insulator 12, otherwise the excess part will accumulate oil, resulting in an increased risk of oil leakage. At the same time, it is necessary to ensure that the metal grounding ring 2 will not interfere with the fillet 122 of the insulator 12 at the most extreme position, otherwise it will cause the metal grounding ring 2 to tilt, resulting in a gap in its sealing and matching part. Therefore, the inner wall surface of the metal grounding ring 2 has a fitting portion 22 close to the insulator 12, which effectively avoids the shaking of the metal grounding ring, thereby reducing the infiltration of oil pollution, ensuring the installation firmness and stability of the metal grounding ring 2, and improving the working stability of the metal grounding ring 2.
[0053] like Figure 3 As shown, the fitting portion 22 of the metal grounding ring 2 is located at the lower end of its inner wall surface. The fitting portion 22 located at the lower end can effectively reduce the oil stains in the metal grounding ring 2 from continuing to flow down along this part to the tail of the ignition needle 1, thereby improving the working stability of the ignition needle 1.
[0054] The outer side of the lower end of the metal grounding ring 2 has an inwardly recessed oil retaining groove 21. Figure 1 , Figure 2As shown, the bottom surface of the metal grounding ring 2 is sealed with the plane of the base 30, and the oil retaining groove 21 on the outer side of the lower end of the metal grounding ring 2 will have a certain blocking effect on the oil. When the oil flows down along the grounding metal ring, this oil retaining groove 21 can change the flow direction of the oil to a certain extent, that is, guide the oil to the inside, slow down the flow speed of the oil, and reduce the oil from The penetration of the matching surface between the lower end of the metal grounding ring 2 and the base 30 ensures the grounding effect of the metal grounding ring 2. At the same time, this oil retaining groove 21 plays an indicating role, which is easy to assemble and identify.
[0055] The ignition device is installed and connected to the base 30 of the stove burner, and the bottom surface of the metal grounding ring 2 is sealed and abutted against the base 30. Specifically, the bottom surface of the metal grounding ring 2 is a plane, and the top surface of the ignition needle 1 fixed on the base 30 is also a plane. The two planes fit against each other to achieve a matching seal, effectively reducing the amount of oil and dirt that penetrates into the bottom surface of the metal grounding ring 2 on the base 30, ensuring good grounding of the grounding metal ring, and improving the ignition effect of the ignition device.
[0056] In this embodiment, the metal grounding ring 2 is made of copper. Copper has good electrical conductivity, low cost and is easy to process. The insulator 12 is made of ceramic, which has good insulation effect, high mechanical strength, acid and alkali corrosion resistance and other excellent properties.
[0057] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.
Claims
1. An ignition device, characterized in that: It includes an ignition needle and a metal grounding ring, the ignition needle includes an electrode needle and an insulator, the insulator is covered on the electrode needle, the top of the electrode needle is exposed from the top surface of the insulator, and the height of the electrode needle exposed from the top surface of the insulator is greater than 3mm, the metal grounding ring is sleeved on the outer peripheral surface of the insulator, the top of the insulator has an umbrella-shaped structure, the top of the metal grounding ring is sealed against the bottom surface of the umbrella-shaped structure, and the outer side of the metal grounding ring does not exceed the outer edge of the umbrella-shaped structure.
2. The ignition device according to claim 1, characterized in that: The gap between the inner wall surface of the metal grounding ring and the outer peripheral surface of the insulator corresponding to the metal grounding ring is 0.3 mm.
3. The ignition device according to claim 1, characterized in that: The inner wall surface of the metal grounding ring has a fitting portion close to the insulator.
4. The ignition device according to claim 3, characterized in that: The fitting portion is located at the lower end of the inner wall surface of the metal grounding ring.
5. The ignition device according to claim 1, characterized in that: The angle of the umbrella-shaped structure is 30-40 degrees.
6. The ignition device according to claim 1, characterized in that: The bottom surface of the umbrella-shaped structure is a plane and fits with the top surface of the metal grounding ring.
7. The ignition device according to claim 1, characterized in that: The outer side of the lower end of the metal grounding ring is provided with an inwardly recessed oil retaining groove.
8. The ignition device according to claim 1, characterized in that: The outer peripheral surface of the electrode needle has a limiting boss protruding outward, and the limiting boss is exposed from the insulator and abuts against the top end of the insulator.
9. A stove burner, characterized in that: It comprises an ignition device as claimed in any one of claims 1-8.
10. The stove burner according to claim 9, characterized in that: The stove burner also includes a base, the ignition device is installed and connected to the base, and the bottom surface of the metal grounding ring is sealed and abutted against the base.