Ignition device and burner comprising same
By opening the through grooves and limiting parts on the insulator of the ignition device, the problem of ignition needle being easily burned red in high temperature environments and having a short service life is solved, and a higher ignition success rate and service life is achieved.
Patent Information
- Application Number
- CN202420506115.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-15
AI Technical Summary
The ignition needles of existing gas stoves are easily burned by flames under certain combustion conditions, resulting in a reduced flame color reaction and service life.
An ignition device is designed, which opens a through groove on the side of the insulator away from the ignition hole, increasing the area of the ignition needle exposed from the insulator to absorb static charge and increase the electric spark generation rate. At the same time, the circumferential rotation of the ignition device is restricted by the limiting member to avoid direct contact with the ignition needle.
It improves the ignition success rate and service life of the ignition needle, avoiding the problems of flame color reaction and the needle extreme redness.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to an ignition device and a burner comprising the same. Background Art
[0002] The ignition system of an existing gas stove is usually composed of a pulse igniter and an ignition needle. The tip of the ignition needle discharges, and the electric spark ignites the gas. In order to improve the ignition performance and increase the ignition success rate, the existing method lengthens the length of the ignition needle exposed outside the ceramic body. The length of the ignition needle assembly exposed from the ceramic body becomes longer. Under certain combustion conditions: such as liquefied gas 20Y, pressure 3000Pa, and propylene gas, the needle is easily burned by the flame and turns red, causing the flame of the fire hole near the ignition hole to react with the flame color, and the flame turns red, affecting the user's visual experience. In addition, the needle is exposed longer, and being burned by the flame for a long time will affect the service life of the ignition needle. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art in that the flame color reaction and the ignition needle life are reduced due to the long exposed length of the ignition needle, and to provide an ignition device and a 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 an insulator, wherein the insulator is wrapped around the bottom of the ignition needle, the top of the ignition needle is exposed on the top surface of the insulator, and a through groove is opened on the side of the insulator away from the ignition hole, the through groove is recessed downward from the top of the insulator, and part of the ignition needle is exposed from the insulator through the through groove.
[0006] In this solution, a through groove is opened on the side of the insulator away from the ignition hole to increase the area of the ignition needle exposed to the insulator. By increasing the exposed area of the ignition needle, more static charges in the environment are absorbed. When the igniter provides a high voltage to the input end of the ignition needle, the density of ionized electrons is greater, and more electrons collide to generate sparks, thereby improving the ignition success rate. Opening on the side away from the ignition hole can ensure that the exposed area of the ignition needle facing the flame area is small, reducing the area of the flame directly acting on the ignition needle, thereby increasing the service life of the ignition needle. At the same time, the needle is not easy to be burned red, avoiding the generation of flame color reaction.
[0007] Preferably, the central angle θ of the through groove is: 60°≤θ≤180°.
[0008] In this scheme, the central angle of the through groove refers to the central angle θ corresponding to the through groove opened in the insulator in the top view, θ≥60°, to ensure that the area of the ignition needle exposed through the through groove can absorb more static charge, θ≤180°, to avoid the flame directly acting on the ignition needle through the through groove, thereby increasing the service life of the ignition needle and avoiding flame color reaction.
[0009] Preferably, the bisector of the central angle of the through groove is parallel to the central axis of the ignition hole.
[0010] In this solution, the bisector of the central angle of the through slot is parallel to the center axis of the ignition hole, so that the maximum angle can be opened while ensuring that the flame cannot act on the ignition needle through the through slot, thereby improving the ignition success rate.
[0011] Preferably, the diameter of the ignition needle is d, and the distance h1 from the bottom of the through groove to the top of the ignition needle in the vertical direction is: d≤h1≤1.5d.
[0012] In this solution, by limiting h1≥d, the area of the ignition needle exposed through the through groove is larger, which can better improve the ignition success rate. By limiting h1≤1.5d, it is avoided that the distance between the ignition needle and the base is too small due to the groove being too large, resulting in creepage and danger.
[0013] Preferably, the vertical distance from the top of the insulator where no through groove is formed to the top of the ignition needle is h2, and h2 is: h2=d / 2.
[0014] In this solution, the height of the ignition needle protruding from the insulator at the portion where the through groove is not provided is limited to h2, so as to minimize the area of the ignition needle directly contacting the flame while ensuring a certain ignition success rate.
[0015] Preferably, the cross-sectional area of the horizontal cross section of the ignition needle is S1, the area of the ignition needle exposed through the through groove is S2, and S2 is: 1≤S2 / S1≤2.
[0016] In this solution, the area of the ignition needle leaking through the through slot is limited, which improves the ignition success rate while preventing the slot from being too large, causing the flame to directly contact the ignition needle through the through slot.
[0017] Preferably, the ignition device further comprises a limiter, which is connected to the outer circumferential surface of the insulator and is used to pass through the through hole of the base, and the limiter abuts against the inner wall surface of the through hole to limit the circumferential rotation of the ignition device.
[0018] In this solution, a limiting member is provided to limit the circumferential rotation of the ignition device, thereby preventing the flame from directly passing through the through slot and contacting the ignition needle due to the rotation of the ignition device.
[0019] Preferably, one end of the limiting member is connected to the outer peripheral surface of the insulator, the other end of the limiting member protrudes outwardly, and the limiting member has a limiting surface, which abuts against the inner wall surface of the through hole.
[0020] In this solution, the limiting surface is pressed against the inner wall surface of the perforation, so the structure and process are simple.
[0021] Preferably, it is characterized in that the limiting surface is a plane.
[0022] In this solution, the limiting surface is limited to a plane, the processing technology is simple, and it is convenient to ensure that the through groove faces away from the flame during installation.
[0023] A burner is characterized in that it comprises the ignition device as described above.
[0024] In this solution, the leakage area of the ignition needle is increased, thereby improving the ignition success rate, and the reduction in the life of the ignition needle and the flame color reaction caused by the increase in the leakage area of the ignition needle are avoided.
[0025] The positive and progressive effect of the utility model is that: in the utility model, a through groove is provided on the side of the insulator away from the ignition hole to increase the area of the ignition needle exposed to the insulator. By increasing the exposed area of the ignition needle, more static charges in the environment are adsorbed. When the igniter provides a high voltage to the input end of the ignition needle, the density of ionized electrons is greater, and more electrons collide to generate electric sparks, thereby improving the ignition success rate. The ignition needle is provided on the side away from the ignition hole to ensure that the exposed area of the ignition needle facing the flame area is small, and the area of the flame directly acting on the ignition needle is reduced, thereby increasing the service life of the ignition needle. At the same time, the needle is not easy to be burned red, avoiding the generation of flame color reaction. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is an axial view of an ignition device according to an embodiment of the present invention.
[0027] Figure 2 This is a front view of an ignition device according to an embodiment of the present utility model.
[0028] Figure 3 It is a top view of an ignition device according to an embodiment of the present utility model.
[0029] Figure 4 This is a diagram showing the cooperation between the ignition device and the base according to one embodiment of the utility model.
[0030] Description of reference numerals:
[0031] Ignition needle 100
[0032] Insulator 200
[0033] Through slot 201
[0034] Limiting piece 300
[0035] Limiting surface 301
[0036] Base 400
[0037] Perforation 401
[0038] Inner wall 402 DETAILED DESCRIPTION
[0039] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.
[0040] like Figures 1 to 3 As shown, this embodiment discloses an ignition device, which includes an ignition needle 100 and an insulator 200. The insulator 200 is wrapped around the bottom of the ignition needle 100, and the top of the ignition needle 100 is exposed on the top surface of the insulator 200. A through groove 201 is opened on the side of the insulator 200 away from the ignition hole. The through groove 201 is recessed downward from the top of the insulator 200, and a portion of the ignition needle 100 is exposed from the insulator 200 through the through groove 201. The through groove 201 is opened on the side of the insulator 200 away from the ignition hole, and the side away from the ignition hole is as shown in FIG. Figure 2 , 3 As shown, the area of the ignition needle 100 exposed to the insulator 200 is increased on the side away from the flame direction. By increasing the exposed area of the ignition needle 100, more static charges in the environment are absorbed, more charges are accumulated at the discharge tip, and the breakdown voltage of the head is reduced. When the igniter provides a high voltage to the input end of the ignition needle 100, the density of ionized electrons is greater, and more electrons collide to generate electric sparks, thereby improving the ignition success rate. The side away from the ignition hole can ensure that the exposed area of the ignition needle 100 facing the flame area is small, reducing the area of the flame directly acting on the ignition needle 100, thereby reducing the heating rate of the ignition needle 100 and increasing the service life of the ignition needle 100. At the same time, the needle is not easy to be burned red, avoiding the red flame caused by the flame color reaction.
[0041] The central angle θ of the through slot 201 is as follows: Figure 3 As shown, in this embodiment, θ is 180°. In other embodiments, the central angle θ of the through slot 201 can be adjusted between 60° and 180° as required. θ≥60° to ensure that the area of the ignition needle 100 exposed through the through slot 201 can absorb more static charge, and θ≤180° to prevent the flame from directly passing through the through slot 201 to act on the ignition needle 100, thereby increasing the service life of the ignition needle 100 and avoiding flame color reaction.
[0042] The bisector of the central angle θ of the through groove 201 is parallel to the central axis direction of the ignition hole. Figure 2 , Figure 3 As shown in the flame direction, the bisector of the central angle θ of the through slot 201 is parallel to the central axis of the ignition hole, so that the maximum angle is opened while ensuring that the flame cannot act on the ignition needle 100 through the through slot 201, thereby improving the ignition success rate.
[0043] like Figure 2 As shown, the diameter of the ignition needle 100 is d, and the distance h1 in the vertical direction from the bottom of the through slot 201 to the top of the ignition needle 100 is: d≤h1≤1.5d. By limiting h1≥d, the area of the ignition needle 100 exposed through the through slot 201 is larger, which can better improve the ignition success rate. By limiting h1≤1.5d, it is avoided that the distance between the ignition needle 100 and the base 400 is too small due to the slot being too large, thereby avoiding the creepage phenomenon and causing danger.
[0044] The vertical distance from the top of the insulator 200 where the through groove 201 is not formed to the top of the ignition needle 100 is h2, and h2 is: h2 = d / 2. The height of the ignition needle 100 leaking out of the insulator 200 where the through groove 201 is not formed is limited to h2, while ensuring a certain ignition success rate, the area of the ignition needle 100 directly contacting the flame is minimized.
[0045] The cross-sectional area of the horizontal cross section of the ignition needle 100 is S1, S1 = π*d 2 / 4, the area of the ignition needle 100 exposed through the through slot 201 is S2, S2 is: 1≤S2 / S1≤2. Limiting the area of the ignition needle 100 leaking through the through slot 201 improves the ignition success rate while preventing the flame from directly contacting the ignition needle 100 through the through slot 201 due to the slot being too large.
[0046] The ignition device further includes a stopper 300, which is connected to the outer peripheral surface of the insulator 200 and is used to pass through the through hole 401 of the base 400, and the stopper 300 abuts against the inner wall surface 402 of the through hole 401 to limit the circumferential rotation of the ignition device. One end of the stopper 300 is connected to the outer peripheral surface of the insulator 200, and the other end of the stopper 300 extends outward and bulges, and the stopper 300 has a stopper surface 301, and the stopper surface 301 abuts against the inner wall surface 402 of the through hole 401. By setting the stopper 300, the circumferential rotation of the ignition device is limited, and the flame is prevented from directly contacting the ignition needle 100 through the through slot 201 due to the rotation of the ignition device. By abutting the stopper surface 301 against the inner wall surface 402 of the through hole 401, the structure is simple and the process is simple. In this embodiment, the limiting surface 301 is a plane, and the limiting surface 301 and the inner wall surface 402 are matched, both of which are planes. When installed, the two surfaces fit together, thereby preventing the ignition device from rotating in the circumferential direction. The processing technology is simple, and it is convenient to ensure that the through groove 201 is facing away from the flame direction during installation. Figure 4As shown, the ignition device passes through the through hole 401 on the base 400, and the limiting surface 301 is in contact with the inner wall surface 402 of the through hole 401, thereby limiting the circumferential rotation of the ignition device.
[0047] This embodiment also includes a burner, which includes the ignition device as described above.
Claims
1. An ignition device, characterized in that: It includes an ignition needle and an insulator, wherein the insulator is wrapped around the bottom of the ignition needle, the top of the ignition needle is exposed on the top surface of the insulator, a through groove is opened on the side of the insulator away from the ignition hole, the through groove is recessed downward from the top of the insulator, and part of the ignition needle is exposed from the insulator through the through groove.
2. The ignition device according to claim 1, characterized in that: The central angle θ of the through groove is: 60°≤θ≤180°.
3. The ignition device according to claim 2, characterized in that: The bisector of the central angle of the through groove is parallel to the central axis direction of the ignition hole.
4. The ignition device according to claim 1, characterized in that: The diameter of the ignition needle is d, and the distance h1 from the bottom of the through groove to the top of the ignition needle in the vertical direction is: d≤h1≤1.5d.
5. The ignition device according to claim 4, characterized in that: The vertical distance from the top of the insulator where no through groove is formed to the top of the ignition needle is h2, and h2 is: h2=d / 2.
6. The ignition device according to claim 5, characterized in that The cross-sectional area of the horizontal cross section of the ignition needle is S1, and the area of the ignition needle exposed through the through groove is S2, and S2 is: 1≤S2 / S1≤2.
7. The ignition device according to claim 1, characterized in that: The ignition device further comprises a limiter, which is connected to the outer peripheral surface of the insulator and is used to pass through the through hole of the base, and the limiter abuts against the inner wall surface of the through hole to limit the circumferential rotation of the ignition device.
8. The ignition device according to claim 7, characterized in that One end of the limiting member is connected to the outer peripheral surface of the insulator, the other end of the limiting member protrudes outward, and the limiting member has a limiting surface, which abuts against the inner wall surface of the through hole.
9. The ignition device according to claim 8, characterized in that The limiting surface is a plane.
10. A burner, characterized in that: It comprises an ignition device as claimed in any one of claims 1-9.