Ignition needle assembly and stove burner comprising same
By designing a sealing structure of two-layer energy-concentrating rings in the ignition needle assembly, the discharge failure problem under the influence of oil pollution is solved, and the ignition success rate and breakdown capability are improved.
Patent Information
- Application Number
- CN202420111850.8
- 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
Existing ignition needle components are susceptible to oil pollution, resulting in discharge failure, weak breakdown ability and low ignition success rate.
Design an ignition needle assembly, including an electrode needle, an insulator, a first energy concentrating ring and a second energy concentrating ring, two layers of energy concentrating ring are arranged on the outer periphery of the insulator, and the bottom of the second energy concentrating ring is sealed on the insulator and the base There is a gap between the top and the insulator, and the bottom of the first energy-concentrating ring extends into the gap to contact, forming a sealing structure to improve oil stain resistance and grounding reliability.
Effectively prevent oil stains from entering the tail of the ignition needle assembly, improve the concentration and breakdown capability of discharge charge current, and improve the ignition success rate.
Smart Images
Figure CN222164891U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an ignition needle assembly and a stove burner comprising the same. Background Art
[0002] At present, most household gas stoves use pulse discharge of ignition needle assemblies to ignite gas. The ignition needle assembly is usually set near the burner fire hole of the gas stove. During ignition, the discharge end of the ignition needle assembly generates high voltage electricity, which breaks through the air between the ignition needle assembly and the fire cover to form an arc, thereby igniting the gas ejected from the fire hole and realizing the ignition of the gas stove.
[0003] However, the existing ignition needle assembly is easily affected by the adhesion of oil stains due to the structural design defects of the needle body. At the same time, the oil stains can easily flow into the tail of the ignition needle assembly where it contacts the burner head through the gap between the base and the ignition needle assembly, causing the charge current to be unconcentrated during discharge and the breakdown ability to be weak, which can easily cause ignition discharge failure and lead to a low ignition success rate of the product. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the defects in the prior art that the ignition needle assembly and the energy focusing ring have weak anti-oil pollution ability, easily cause ignition discharge failure, and cannot generate ignition sparks normally and continuously, resulting in ignition failure, and provide an ignition needle assembly and a stove burner containing the same.
[0005] The utility model solves the above technical problems through the following technical solutions:
[0006] An ignition needle assembly is connected to a mounting hole of a base, and is characterized in that the ignition needle assembly includes an electrode needle, an insulator, a first energy focusing ring and a second energy focusing ring, the insulator is covered on the electrode needle, the top of the electrode needle is exposed at the top of the insulator, the first energy focusing ring and the second energy focusing ring are both sleeved on the outer circumferential surface of the insulator, the bottom of the second energy focusing ring is sealed and pressed between the insulator and the mounting hole, there is a gap between the upper end of the second energy focusing ring and the insulator, the bottom of the first energy focusing ring extends into the gap and abuts against the second energy focusing ring.
[0007] In the present scheme, the above-mentioned structural form is adopted, and two layers of energy focusing rings are sleeved on the outer peripheral surface of the insulator. The second energy focusing ring at the bottom of the outer layer plays the role of installing and fixing the ignition needle assembly. The bottom seal of the second energy focusing ring is pressed between the insulator and the base mounting hole, which effectively avoids the problem of oil stains flowing into the tail of the ignition needle assembly contacting the burner head through the gap between the base and the ignition needle assembly. There is a gap between the top of the second energy focusing ring and the insulator, and this gap can store oil stains. The above characteristics improve the anti-oil stain ability of the ignition needle assembly. The bottom of the first energy focusing ring extends into the gap and abuts against the second energy focusing ring, ensuring the contact reliability of the first energy focusing ring and the second energy focusing ring, thereby ensuring the grounding reliability of the first energy focusing ring. In summary, the above technical characteristics make the charge current of the ignition needle assembly more concentrated when discharging, and the breakdown ability is stronger, thereby improving the product ignition success rate.
[0008] Preferably, the outer peripheral surface of the insulator has a sealing platform protruding outward, the inner wall surface of the second energy focusing ring has a step surface extending inward, and the sealing platform is sealed against the step surface.
[0009] In this solution, the above-mentioned structural form is adopted, and the sealing platform on the insulator is supported on the step surface of the second energy focusing ring, ensuring that the position of the insulator will not slide down, and the sealing surface between them effectively prevents the oil and dirt in the second energy focusing ring from penetrating into the tail of the electrode needle, thereby ensuring the reliability of the normal working discharge of the electrode needle.
[0010] Preferably, the outer peripheral surface of the second energy focusing ring has a first sealing surface, the second energy focusing ring extends into the mounting hole, and the first sealing surface is sealed against the inner wall surface of the mounting hole.
[0011] In this solution, the above-mentioned structural form is adopted to effectively prevent the oil dirt outside the second energy focusing ring from flowing into the tail of the electrode needle, thereby ensuring the reliability of the normal working discharge of the electrode needle.
[0012] Preferably, the outer peripheral surface of the second energy focusing ring has a second sealing surface extending outward in the horizontal direction, the second sealing surface is located above the first sealing surface, and the second energy focusing ring abuts against the base so that the second sealing surface seals against the top surface of the base.
[0013] In the present solution, the above-mentioned structural form is adopted, and the second sealing surface of the second energy focusing ring is supported on the top surface of the base, so that the ignition needle assembly is more firmly and reliably installed on the base. In addition, the sealing surface between the two can also effectively prevent oil stains outside the second energy focusing ring from flowing into the tail of the ignition needle assembly along the gap between the second energy focusing ring and the base, further ensuring the reliability of normal operating discharge of the ignition needle assembly.
[0014] Preferably, a sealing groove is provided between the second sealing surface and the first sealing surface, and the sealing groove is located in the mounting hole.
[0015] In this solution, by adopting the above-mentioned structural form, a sealing ring can be arranged in the sealing groove to further enhance the sealing effect and more effectively prevent impurities such as oil and dirt from penetrating into the tail of the ignition needle assembly.
[0016] Preferably, the top of the second energy focusing ring extends and bulges upward so that the height of the gap is 6-12 mm.
[0017] In the present scheme, the above-mentioned structural form and the gap height value of 6-12mm are adopted, so that the ignition needle assembly device has sufficient space to store oil and dirt, and can make the second energy focusing ring have a more significant effect on the spatial charge attraction and field strength of the insulator, which can effectively break the charge balance between the electrode needle and the insulator, ensure the reliability of discharge at the tip of the ignition needle assembly, and improve the ignition success rate.
[0018] Preferably, the second energy focusing ring is made of a conductor.
[0019] In this solution, the above-mentioned structural form is adopted, and the conductivity of the conductor can well guide the adverse charges on the ignition needle assembly into the base, thereby ensuring the reliability of ignition and discharge of the ignition needle assembly.
[0020] Preferably, the first energy focusing ring includes an energy focusing ring body and a conductive arm, the energy focusing ring body is sleeved on the outer circumferential surface of the insulator, the top of the conductive arm is connected to the bottom of the energy focusing ring body, the bottom end of the conductive arm extends outward and downward in a direction away from the energy focusing ring body, and the conductive arm can produce elastic deformation so that its bottom end abuts against the inner wall surface of the second energy focusing ring in an interference fit manner.
[0021] In this solution, the above-mentioned structural form is adopted to ensure that the first energy focusing ring is in reliable contact with the second energy focusing ring, thereby ensuring the grounding reliability of the first energy focusing ring.
[0022] Preferably, the energy focusing ring body has a guide slit, and the guide slit runs from the top of the energy focusing ring body along an arc-shaped curved direction to the bottom of the energy focusing ring body.
[0023] In the present scheme, the above-mentioned structural form is adopted, and a guide slot is set on the tube wall of the first energy focusing ring along the direction of the arc bend. Due to the wall adhesion effect of the liquid, the liquid will flow along the arc bend and be guided into the second energy focusing ring. By guiding the oil pollution to the arc bend, other smooth surfaces are protected, and the normal operation of most areas is achieved at the expense of local areas, thereby reducing the impact of oil pollution. The sudden change of curvature at the arc bend can effectively gather charges, attract adverse charges on the surface of the insulator to the first energy focusing ring, and then successfully guide them to the grounding end through the second energy focusing ring, thereby ensuring the ignition success rate.
[0024] A stove burner is characterized in that it comprises the ignition needle assembly as described above.
[0025] In the present solution, the above-mentioned structural form is adopted, and the ignition needle assembly is installed on the base of the stove burner. By sleeve-arranging two layers of energy-gathering rings on the outer peripheral surface of the insulator, the second energy-gathering ring at the bottom of the outer layer plays the role of installing and fixing the ignition needle assembly. More importantly, the sealing effect between the ignition needle assembly and the base effectively avoids the hidden danger of oil and dirt flowing into the tail of the ignition needle assembly contacting the burner head through the gap between the base mounting hole and the ignition needle assembly. There is a gap of a certain height between the top of the second energy-gathering ring and the insulator, and this gap can store oil and dirt. The above features improve The anti-oil pollution ability of the ignition needle assembly is improved; the bottom of the first energy focusing ring extends into the gap and abuts against the second energy focusing ring, ensuring the contact reliability of the first energy focusing ring and the second energy focusing ring, thereby ensuring the grounding reliability of the first energy focusing ring; the arc-shaped curved repeated cross-type unsealing structure running through the upper tube wall of the first energy focusing ring can not only divert the oil pollution from here to the gap of the second energy focusing ring, but also attract the unfavorable charges to here. The above technical features make the charge current of the ignition needle assembly more concentrated when discharging, and the breakdown ability is stronger, thereby improving the product ignition success rate.
[0026] 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.
[0027] The positive and progressive effects of the utility model are:
[0028] The ignition needle assembly of the utility model and the stove burner including the same, the ignition needle assembly is installed on the base of the stove burner, and two layers of energy-gathering rings are sleeved on the outer peripheral surface of the insulator. The second energy-gathering ring at the bottom of the outer layer plays a sealing role between the ignition needle assembly and the base, which effectively avoids the hidden danger of oil and dirt flowing into the tail of the ignition needle assembly contacting the stove head through the gap between the base mounting hole and the ignition needle assembly. There is a gap of a certain height between the top of the second energy-gathering ring and the insulator, and the gap can store oil and dirt. The above features improve the ignition needle. The component's anti-oil pollution ability; the bottom of the first energy focusing ring extends into the gap and abuts against the second energy focusing ring, ensuring the contact reliability of the first energy focusing ring and the second energy focusing ring, thereby ensuring the grounding reliability of the first energy focusing ring. The arc-shaped repeated cross-type unsealing structure that runs through the upper tube wall of the first energy focusing ring can not only divert the oil pollution from here to the gap of the second energy focusing ring, but also attract the adverse charges here. The above technical features make the charge current of the ignition needle assembly more concentrated when discharging, and the breakdown ability is stronger, thereby improving the product ignition success rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 The figure is a schematic diagram of the structure of a stove burner according to an embodiment of the utility model.
[0030] Figure 2 The figure is a schematic diagram of the internal structure of a stove burner according to an embodiment of the utility model.
[0031] Figure 3 It is a partially enlarged schematic diagram of the ignition needle assembly according to the embodiment of the utility model.
[0032] Figure 4 It is a schematic structural diagram of the first energy focusing ring of the ignition needle assembly of an embodiment of the utility model.
[0033] Description of reference numerals:
[0034] Electrode needle 1
[0035] Insulator 2
[0036] Sealing station 21
[0037] The first energy ring 3
[0038] Energy ring body 31
[0039] Diversion seam 311
[0040] Conductive arm 32
[0041] Second energy ring 4
[0042] Step surface 41
[0043] First sealing surface 42
[0044] Second sealing surface 43
[0045] Seal groove 44
[0046] Base 50
[0047] Mounting hole 501 DETAILED DESCRIPTION
[0048] 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.
[0049] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, an embodiment of the utility model discloses a stove burner, which includes an ignition needle assembly and a base 50, the ignition needle assembly includes an electrode needle 1, an insulator 2, a first energy focusing ring 3 and a second energy focusing ring 4, the insulator 2 is covered on the electrode needle 1, the top of the electrode needle 1 is exposed at the upper end of the insulator 2, the first energy focusing ring 3 and the second energy focusing ring 4 are both sleeved on the outer circumferential surface of the insulator 2, the bottom of the second energy focusing ring 4 is sealed and pressed between the insulator 2 and the mounting hole 501, there is a gap between the top of the second energy focusing ring 4 and the insulator 2, the bottom of the first energy focusing ring 3 extends into the gap and abuts against the second energy focusing ring 4.
[0050] By arranging two layers of energy focusing rings on the outer peripheral surface of the insulator 2, the second energy focusing ring 4 at the bottom of the outer layer plays the role of installing and fixing the ignition needle assembly. The bottom seal of the second energy focusing ring 4 is pressed between the insulator 2 and the mounting hole 501 of the base 50, which effectively avoids the problem of oil stains flowing into the tail of the ignition needle assembly contacting the burner head through the gap between the base 50 and the ignition needle assembly. There is a gap between the top of the second energy focusing ring 4 and the insulator 2, and this gap can store oil stains. The above characteristics improve the anti-oil stain ability of the ignition needle assembly. The bottom of the first energy focusing ring 3 extends into the gap and abuts against the second energy focusing ring 4, ensuring the contact reliability of the first energy focusing ring 3 and the second energy focusing ring 4, thereby ensuring the grounding reliability of the first energy focusing ring 3. In summary, the above technical features make the charge current of the ignition needle assembly more concentrated when discharging, and the breakdown ability is stronger, thereby improving the product ignition success rate.
[0051] like Figure 3 As shown, the outer peripheral surface of the insulator 2 has a sealing platform 21 protruding outward, and the inner wall surface of the second energy focusing ring 4 has a step surface 41 extending inward, and the sealing platform 21 is sealed against the step surface 41. The sealing platform 21 on the insulator 2 allows it to be supported on the step surface 41 of the second energy focusing ring 4, ensuring that the position of the insulator 2 will not slide down, and the sealing surface between them effectively prevents the oil and dirt in the second energy focusing ring 4 from penetrating into the tail of the electrode needle 1, ensuring the reliability of the normal discharge of the electrode needle 1. Specifically, the bottom surface of the sealing platform 21 and the top surface of the step surface 41 are both planes, and the fit between the planes makes the sealing performance here better.
[0052] like Figure 3 As shown, the outer peripheral surface of the second energy focusing ring 4 has a first sealing surface 42, and the second energy focusing ring 4 extends into the mounting hole 501 of the base 50, and the first sealing surface 42 is sealed against the inner wall surface of the mounting hole 501. The oil and dirt outside the second energy focusing ring 4 are effectively prevented from flowing into the tail of the electrode needle 1, ensuring the reliability of the normal discharge of the electrode needle 1. Specifically, the first sealing surface 42 is a smooth cylindrical surface with low roughness, and the gap between it and the inner wall surface of the mounting hole 501 is small, which improves the sealing performance between the sealing mating surfaces, and the end of the first sealing surface 42 has a chamfer for easy guiding installation.
[0053] The outer peripheral surface of the second energy focusing ring 4 has a second sealing surface 43 extending outward in the horizontal direction, and the second sealing surface 43 is located above the first sealing surface 42. The second energy focusing ring 4 abuts against the base 50 so that the second sealing surface 43 seals against the top surface of the base 50. The second sealing surface 43 of the second energy focusing ring 4 is supported on the top surface of the base 50, so that the ignition needle assembly is more firmly and reliably installed on the base 50. In addition, the sealing surface between the two can also effectively prevent the oil stains outside the second energy focusing ring 4 from flowing into the tail of the ignition needle assembly along the gap between the second energy focusing ring 4 and the base 50, further ensuring the reliability of the normal working discharge of the ignition needle assembly.
[0054] In this embodiment, in order to increase the sealing and installation reliability of the second energy focusing ring 4, it has a larger thickness, and the overall structure is composed of two sections of cylinders with different upper outer diameters. The bottom surface of the large outer diameter cylindrical part is the second sealing surface 43, and the mounting hole 501 of the base 50 is a countersunk hole. The larger sealing area here can effectively prevent oil and dirt from flowing from here to the tail of the ignition needle assembly.
[0055] A sealing groove 44 is provided between the second sealing surface 43 and the first sealing surface 42, and the sealing groove 44 is located in the mounting hole 501. The sealing groove 44 is used to accommodate a sealing ring to further enhance the sealing effect. Specifically, the sealing groove 44 is located at the top of the outer circumference of the small outer diameter cylindrical part of the second energy focusing ring 4.
[0056] The top of the second energy focusing ring 4 extends upward to make the height of the gap 6-12mm. Figure 2 As shown, the inner diameter of the large cylindrical part of the second energy focusing ring 4 is larger than the outer diameter of the insulator 2 surrounded by it, so there is a certain installation gap and space that can be used to store oil. Changing the height H of the second energy focusing ring 4 at this point can adjust the oil storage capacity, and as the height H increases, the second energy focusing ring 4 has a more significant effect on the space charge attraction and field strength of the insulator 2, which can effectively break the charge balance between the electrode needle 1 and the insulator 2. The best effect is achieved when the height H is 6-12mm.
[0057] The material of the second energy focusing ring 4 is a conductor. The conductivity of the conductor enables it to well introduce the adverse charges on the ignition needle assembly to the base 50. In this embodiment, the material of the second energy focusing ring 4 is a copper alloy or stainless steel.
[0058] The first energy focusing ring 3 includes an energy focusing ring body 31 and a conductive arm 32. The energy focusing ring body 31 is sleeved on the outer peripheral surface of the insulator 2. The top of the conductive arm 32 is connected to the bottom of the energy focusing ring body 31. The bottom end of the conductive arm 32 extends outward and downward in a direction away from the energy focusing ring body 31. The conductive arm 32 can produce elastic deformation so that its bottom end rests on the inner wall surface of the second energy focusing ring 4 in an interference fit manner.
[0059] like Figure 3 As shown, the conductive arm 32 of the first energy focusing ring 3 is inclined outward and downward, and the horizontal projection of the bottom end of the conductive arm 32 in the undeformed state should exceed the inner diameter of the second energy focusing ring 4 around it, so that the conductive arm 32 can produce elastic deformation when they are matched, thereby ensuring that the bottom end of the conductive arm 32 is reliably against the inner wall surface of the second energy focusing ring 4 in an interference fit manner. This kind of matching method ensures that the first energy focusing ring 3 can be reliably grounded and discharged, and ensures that the ignition needle assembly can discharge reliably and efficiently.
[0060] The energy focusing ring body 31 has a guide slot 311 , and the guide slot 311 runs through from the top of the energy focusing ring body 31 to the bottom of the energy focusing ring body 31 along an arc-shaped direction.
[0061] like Figure 3 and Figure 4 As shown, in this embodiment, the energy-gathering ring body 31 tightly embraces the insulator 2, and a guide seam 311 that is repeatedly cross-spliced and unsealed is opened on the tube wall of the energy-gathering ring body 31, and the two side boundaries of the guide seam 311 are connected by several arcs. Of course, in other embodiments, the two side boundaries of the guide seam 311 can also be a variety of curves. Due to the wall attachment effect of the liquid, the liquid will flow along the curved part and be guided into the second energy-gathering ring. By guiding the oil to the curved part, other smooth surfaces are protected, and the normal operation of most areas is sacrificed in exchange for the local area, thereby reducing the impact of oil; the sudden change of curvature in the curved part can effectively gather charges, attract the adverse charges on the surface of the insulator to the first energy-gathering ring, and then successfully guide them to the ground through the second energy-gathering ring, so as to ensure the success rate of ignition.
[0062] 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 needle assembly connected to a mounting hole of a base, characterized in that: The ignition needle assembly includes an electrode needle, an insulator, a first energy focusing ring and a second energy focusing ring. The insulator is covered on the electrode needle, and the top of the electrode needle is exposed at the top of the insulator. The first energy focusing ring and the second energy focusing ring are both sleeved on the outer circumferential surface of the insulator. The bottom of the second energy focusing ring is sealed and pressed between the insulator and the mounting hole. There is a gap between the upper end of the second energy focusing ring and the insulator, and the bottom of the first energy focusing ring extends into the gap and abuts against the second energy focusing ring.
2. The ignition needle assembly according to claim 1, characterized in that: The outer peripheral surface of the insulator is provided with a sealing platform protruding outward, the inner wall surface of the second energy focusing ring is provided with a step surface extending inward, and the sealing platform is sealed against the step surface.
3. The ignition needle assembly according to claim 1, characterized in that: The outer peripheral surface of the second energy focusing ring has a first sealing surface. The second energy focusing ring extends into the mounting hole, and the first sealing surface is sealed against the inner wall surface of the mounting hole.
4. The ignition needle assembly according to claim 3, characterized in that: The outer peripheral surface of the second energy focusing ring has a second sealing surface extending outward in the horizontal direction, the second sealing surface is located above the first sealing surface, and the second energy focusing ring abuts against the base so that the second sealing surface seals against the top surface of the base.
5. The ignition needle assembly according to claim 4, characterized in that: A sealing groove is provided between the second sealing surface and the first sealing surface, and the sealing groove is located in the mounting hole.
6. The ignition needle assembly according to claim 1, characterized in that: The top of the second energy focusing ring extends and bulges upward, so that the height of the gap is 6-12 mm.
7. The ignition needle assembly according to claim 1, characterized in that: The material of the second energy focusing ring is a conductor.
8. The ignition needle assembly according to claim 1, characterized in that: The first energy focusing ring includes an energy focusing ring body and a conductive arm. The energy focusing ring body is sleeved on the outer circumferential surface of the insulator, the top of the conductive arm is connected to the bottom of the energy focusing ring body, and the bottom end of the conductive arm extends outward and downward in a direction away from the energy focusing ring body, and the conductive arm can produce elastic deformation so that its bottom end rests on the inner wall surface of the second energy focusing ring in an interference fit manner.
9. The ignition needle assembly according to claim 8, characterized in that The energy focusing ring body is provided with a guide slot, and the guide slot runs through from the top end of the energy focusing ring body along an arc-shaped curved direction to the bottom end of the energy focusing ring body.
10. A stove burner, characterized in that: It comprises an ignition needle assembly as claimed in any one of claims 1-9.