Combustor

Abstract

The utility model provides a burner which comprises a gas mixing base, an ignition device and an annular boss, a through hole is formed in the gas mixing base, the bottom end of the annular boss is connected to the gas mixing base and integrally formed with the gas mixing base, the top end of the annular boss extends upwards in the vertical direction, the annular boss surrounds the through hole, and the ignition device is arranged on the through hole. The ignition device vertically penetrates through the through hole and the annular boss, and a gap is formed between the inner wall face of the annular boss and the peripheral face of the ignition device. The annular boss changes power line distribution of an electric field from the head of the ignition device to the discharging end of the inner ring fire cover, power lines around the axis of the ignition device are more gathered, a gap is formed between the inner wall face of the annular boss and the peripheral face of the ignition device, charge movement does not exist, and charge distribution on the surface of the ignition device is not affected. Therefore, the intensity of a local electric field between the head of the ignition device and the discharge end of the inner ring fire cover is improved, the ignition performance of the combustor is improved, the annular boss is arranged, the ignition device can be prevented from shaking, and stability is improved.

Description

Technical Field

[0001] The utility model relates to a burner. 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 success rate, the existing method is to add a copper nut or a metal ring to the ignition needle to improve the grounding of the ignition needle and improve the ignition performance.

[0003] In a Chinese heavy oil cooking environment, after the gas stove has been used for a period of time, oil stains adhere to the "metal ring" and the ceramic body of the ignition needle, and the grounding performance of the "metal ring" and the gas mixing base decreases. When the voltage provided by the output end of the igniter remains unchanged, the breakdown voltage of the ignition needle head increases and the ignition performance decreases. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a burner in order to overcome the defect of the prior art that the ignition performance is reduced after the oil stains adhere to the metal ring.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A burner is characterized in that it includes a gas mixing base, an ignition device and an annular boss, the gas mixing base is provided with a through hole, the bottom end of the annular boss is connected to the gas mixing base and is integrally formed with the gas mixing base, the top end of the annular boss extends upward in a vertical direction, and the annular boss surrounds the through hole, the ignition device vertically passes through the through hole and the annular boss, and there is a gap between the inner wall surface of the annular boss and the outer peripheral surface of the ignition device.

[0007] In the present scheme, the annular boss and the mixing base are integrally formed, and the annular boss is arranged on the periphery of the ignition device, which changes the distribution of electric field lines from the head of the ignition device to the discharge end of the inner ring fire cover, making the electric field lines around the axis of the ignition device more concentrated. There is a gap between the inner wall surface of the annular boss and the outer peripheral surface of the ignition device, which does not affect the charge distribution on the surface of the ignition device. There is no charge movement between the ignition device and the annular boss, thereby increasing the local electric field strength from the head of the ignition device to the discharge end of the inner ring fire cover, thereby improving the ignition performance of the burner, and by setting the annular boss, the ignition device can be prevented from shaking and the stability is improved.

[0008] Preferably, the diameter of the cross section of the inner wall surface of the annular boss is d1, the diameter of the cross section of the outer peripheral surface of the ignition device is d2, and d1 is: d1≥d2+1.2mm.

[0009] In this solution, there is a gap between the inner wall surface of the annular boss and the outer peripheral surface of the ignition device, which does not affect the charge distribution on the surface of the ignition device, and the minimum gap is limited to 0.6mm to avoid installation tilt or shaking that causes the inner wall surface of the annular boss to contact the outer peripheral surface of the ignition device, resulting in charge movement between the ignition device and the annular boss, affecting the gathering of electric lines on the annular boss.

[0010] Preferably, the vertical distance from the top of the ignition device to the upper end surface of the annular boss is h1, and the vertical distance from the top of the ignition device to the discharge end of the inner ring fire cover is h2, and h1>h2.

[0011] In this solution, the vertical distance from the top of the ignition device to the upper end surface of the annular boss is greater than the vertical distance from the top of the ignition device to the discharge end of the inner ring fire cover, thereby avoiding creepage.

[0012] Preferably, h1 is: 11mm≤h1≤15mm, and h2 is: 3mm≤h2≤4.5mm.

[0013] In this solution, the vertical distance from the top of the ignition device to the discharge end of the inner ring fire cover is limited to 3-4.5mm to ensure the ignition success rate, and the vertical distance from the top of the ignition device to the upper end surface of the annular boss is limited to 11-15mm to avoid creepage and avoid energy loss caused by discharge in other places of the ignition device, thereby improving the ignition success rate.

[0014] Preferably, the gas mixing base includes a base body and a gas mixing chamber, the gas mixing chamber is arranged on the base body, the through hole is opened in the gas mixing chamber, the annular boss is connected to the gas mixing chamber, the bottom of the ignition device is connected to the base body, and the top of the ignition device passes through the gas mixing chamber.

[0015] In this solution, the base body and the mixing chamber are designed to be split, which is convenient for later maintenance and replacement. The mixing chamber is connected to an annular boss, and the ignition device passes through the annular boss. The annular boss limits the ignition device to prevent it from shaking.

[0016] Preferably, a protrusion is provided on the outer peripheral surface of the ignition device, and a supporting groove is provided on the top surface of the base body, and the protrusion abuts against the supporting groove.

[0017] In this solution, the ignition device is supported in the vertical direction by providing matching protrusions and supporting grooves to prevent the ignition device from moving up and down.

[0018] Preferably, the mixing base is integrally formed, and the ignition device includes an ignition needle, an insulator and a limiting structure, the insulator is circumferentially wrapped around the ignition needle, the limiting structure is connected to the outer circumferential surface of the insulator, and the bottom surface of the limiting structure is placed on the upper end surface of the annular boss.

[0019] In this solution, the mixing base is integrally formed to increase the structural strength, and the ignition device is placed on the upper end surface of the annular boss through a limiting structure to prevent the ignition device from shaking. The installation is simple and convenient, and the ease of use is improved.

[0020] Preferably, the limiting structure is in the shape of an umbrella.

[0021] In this solution, the limiting structure is umbrella-shaped, which can guide liquids and the like outwards and prevent oil stains from accumulating on the limiting structure.

[0022] Preferably, the outer diameter of the upper end surface of the annular boss is smaller than the outer diameter of the bottom surface of the limiting structure.

[0023] In this solution, the outer diameter of the bottom surface of the limiting structure is larger than the outer diameter of the upper end surface of the annular boss, and the liquid can be directed to the outside of the annular boss through the umbrella-shaped outer edge to prevent oil from gathering on the annular boss.

[0024] Preferably, the material of the limiting structure is an insulating material;

[0025] And / or, the vertical distance from the top of the ignition device to the upper end surface of the limiting structure is greater than the vertical distance from the top of the ignition device to the discharge end of the inner ring fire cover.

[0026] In this solution, the material of the limiting structure is an insulating material, and the outer diameter of the bottom surface of the limiting structure is larger than the outer diameter of the upper end surface of the annular boss. There is an insulating limiting structure between the top of the ignition device and the upper end surface of the annular boss, which solves the creepage phenomenon caused by overflowing liquid with good conductivity. The vertical distance from the top of the ignition device to the upper end surface of the limiting structure is greater than the vertical distance from the top of the ignition device to the discharge end of the inner ring fire cover, avoiding the creepage phenomenon.

[0027] The positive progressive effect of the utility model is that the burner disclosed by the utility model is formed with an annular boss and a gas mixing base in one piece, and the annular boss is arranged at the periphery of the ignition device, which changes the distribution of electric lines of the electric field from the head of the ignition device to the discharge end of the inner ring fire cover, so that the electric lines around the axis of the ignition device are more concentrated, and there is a gap between the inner wall surface of the annular boss and the outer peripheral surface of the ignition device, which does not affect the charge distribution on the surface of the ignition device, and there is no charge movement between the ignition device and the annular boss. Therefore, the local electric field strength between the head of the ignition device and the discharge end of the inner ring fire cover is improved, and the ignition performance of the burner is improved. Moreover, by setting the annular boss, the ignition device can be prevented from shaking and the stability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional view of the burner of the first embodiment of the present utility model.

[0029] Figure 2 This is a cross-sectional view of a burner according to Embodiment 1 of the present invention.

[0030] Figure 3 This is a partial enlarged view of the A area of ​​the burner in the first embodiment of the present utility model.

[0031] Figure 4 This is a three-dimensional view of the burner of the second embodiment of the present utility model.

[0032] Figure 5 This is a cross-sectional view of a burner according to Embodiment 2 of the present invention.

[0033] Figure 6 This is a partial enlarged view of the B area of ​​the burner in the second embodiment of the present utility model.

[0034] Figure 7 This is a schematic diagram of the structure of the ignition device of the second embodiment of the utility model.

[0035] Description of reference numerals:

[0036] Mixing Base 100

[0037] Gas Mixing Chamber 101

[0038] Base body 102

[0039] Through hole 103

[0040] Support groove 104

[0041] Ignition device 200

[0042] Ignition needle 201

[0043] Insulator 202

[0044] Bump 203

[0045] Limiting structure 204

[0046] Annular boss 300

[0047] Inner ring fire cover discharge end 400 DETAILED DESCRIPTION

[0048] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0049] Embodiment 1

[0050] like Figure 1 , Figure 2 As shown, this embodiment discloses a burner, including a gas mixing base 100, an ignition device 200 and an annular boss 300, a through hole 103 is opened on the gas mixing base 100, the bottom end of the annular boss 300 is connected to the gas mixing base 100 and is integrally formed with the gas mixing base 100, the top end of the annular boss 300 extends upward in the vertical direction, and the annular boss 300 surrounds the through hole 103, the ignition device 200 vertically passes through the through hole 103 and the annular boss 300, and there is a gap between the inner wall surface of the annular boss 300 and the outer peripheral surface of the ignition device 200.

[0051] The annular boss 300 is arranged on the periphery of the ignition device 200, which changes the distribution of the electric field lines from the head of the ignition device 200 to the discharge end 400 of the inner ring fire cover, so that the electric field lines around the axis of the ignition device 200 are more concentrated. By setting the annular boss 300, the ignition device 200 can be prevented from shaking and the stability can be improved. The annular boss 300 and the gas mixing base 100 are integrally formed to improve the structural strength and prevent the overflow from flowing into the connection between the two, resulting in a reduction in the service life and the ignition performance of the burner. When oil stains are attached to the surface or tail of the ignition device 200, the grounding of the ignition device 200 becomes worse, and the effect of the annular boss on the analysis of the electric field lines around the axis of the ignition device 200 is not weakened and still works. The breakdown voltage of the discharge end of the ignition device 200 is still low, and the gas cooker can be ignited and used normally.

[0052] There is a gap between the inner wall surface of the annular boss 300 and the outer peripheral surface of the ignition device 200, which does not affect the charge distribution on the surface of the ignition device 200. There is no charge movement between the ignition device 200 and the annular boss 300, thereby increasing the local electric field strength from the head of the ignition device 200 to the discharge end 400 of the inner ring fire cover, thereby improving the ignition performance of the burner.

[0053] like Figure 3 As shown, the diameter of the cross section of the inner wall of the annular boss 300 is d1, and the diameter of the cross section of the outer peripheral surface of the ignition device 200 is d2, and d1 satisfies d1≥d2+1.2mm. There is a gap between the inner wall of the annular boss 300 and the outer peripheral surface of the ignition device 200, which does not affect the charge distribution on the surface of the ignition device 200, and the minimum gap is limited to 0.6mm to avoid the inner wall of the annular boss 300 contacting the outer peripheral surface of the ignition device 200 due to tilting or shaking of the installation, resulting in charge movement between the ignition device 200 and the annular boss 300, affecting the gathering of electric lines of the annular boss 300.

[0054] In other alternative embodiments, the diameter d1 of the cross-section of the inner wall surface of the annular boss 300, the diameter d2 of the cross-section of the outer peripheral surface of the ignition device 200, and the gap therebetween can be selected according to actual conditions.

[0055] like Figure 3 As shown, the vertical distance from the top of the ignition device 200 to the upper end surface of the annular boss 300 is h1, and the vertical distance from the top of the ignition device 200 to the discharge end 400 of the inner ring fire cover is h2, and h1>h2. The vertical distance from the top of the ignition device 200 to the upper end surface of the annular boss 300 is greater than the vertical distance from the top of the ignition device 200 to the discharge end 400 of the inner ring fire cover to avoid creepage.

[0056] Preferably, h1 is: 11mm≤h1≤15mm, and h2 is: 3mm≤h2≤4.5mm. The vertical distance from the top of the ignition device 200 to the discharge end 400 of the inner ring fire cover is limited to 3-4.5mm to ensure the ignition success rate, and the vertical distance from the top of the ignition device 200 to the upper end surface of the annular boss 300 is limited to 11-15mm to avoid creepage.

[0057] In other alternative embodiments, the vertical distance h1 from the top of the ignition device 200 to the upper end surface of the annular boss 300 and the vertical distance h2 from the top of the ignition device 200 to the discharge end 400 of the inner ring fire cover can be selected according to actual needs.

[0058] like Figure 2 , Figure 3 As shown, the gas mixing base 100 in this embodiment includes a base body 102 and a gas mixing chamber 101, the gas mixing chamber 101 is arranged on the base body 102, the through hole 103 is opened in the gas mixing chamber 101, the annular boss 300 is connected to the gas mixing chamber 101, the bottom of the ignition device 200 is connected to the base body 102, and the top of the ignition device 200 passes through the gas mixing chamber 101. The base body 102 and the gas mixing chamber 101 are designed in a split type, which is convenient for later maintenance and replacement. The annular boss 300 is connected to the gas mixing chamber 101, and the ignition device 200 passes through the annular boss 300. The annular boss 300 plays a limiting role on the ignition device 200 to prevent the ignition device 200 from shaking.

[0059] The outer peripheral surface of the ignition device 200 is provided with a protrusion 203, and the top surface of the base body 102 is provided with a support groove 104, and the protrusion 203 abuts against the support groove 104. By providing the matching protrusion 203 and the support groove 104, the ignition device 200 is supported in the vertical direction to prevent the ignition device 200 from moving up and down. The cross section of the support groove 104 can also be set to a specific shape so that the protrusion 203 abuts against the inner wall surface of the support groove 104 to limit the circumferential rotation of the ignition device 200.

[0060] Embodiment 2

[0061] like Figures 4 to 7As shown, the basic structure of the burner in Example 2 is basically the same as that in Example 1, and the main difference is that the mixing base 100 is integrally formed, the ignition device 200 includes an ignition needle 201, an insulator 202 and a limiting structure 204, the insulator 202 is circumferentially wrapped around the ignition needle 201, the limiting structure 204 is connected to the outer peripheral surface of the insulator 202, and the bottom surface of the limiting structure 204 is placed on the upper end surface of the annular boss 300.

[0062] The gas mixing chamber 101 and the base body 102 are integrally formed to increase the structural strength. The ignition device 200 is placed on the upper end surface of the annular boss 300 through the limiting structure 204 to prevent the ignition device 200 from shaking. The installation is simple and convenient, and the convenience of use is improved.

[0063] like Figure 5 , Figure 6 As shown, the limiting structure 204 is in an umbrella shape, that is, the cross-sectional area of ​​the limiting structure 204 gradually increases from top to bottom, which guides the overflow outwards and prevents oil from gathering on the limiting structure 204 .

[0064] like Figure 6 As shown, the outer diameter d3 of the upper end surface of the annular boss 300 is smaller than the outer diameter d4 of the bottom surface of the limiting structure 204. The liquid can be guided to the outside of the annular boss 300 through the umbrella-shaped outer edge to avoid the accumulation of oil on the annular boss 300. That is, in an oily environment, its grounding is still not affected, and it has better ignition performance.

[0065] In order to avoid the creepage phenomenon that occurs when encountering a spill with good conductive properties, the following three solutions can be used:

[0066] Solution 1: The material of the limiting structure 204 is an insulating material. The umbrella-shaped limiting structure 204 covering the upper end surface of the annular boss 300 is an insulating material. There is an insulating limiting structure 204 between the top of the ignition device 200 and the upper end surface of the annular boss 300 to avoid creepage.

[0067] Solution 2: The vertical distance h1 from the top of the ignition device 200 to the upper end surface of the limiting structure 204 is greater than the vertical distance h2 from the top of the ignition device 200 to the discharge end 400 of the inner ring fire cover to prevent creepage.

[0068] Solution three: The material of the limiting structure 204 is an insulating material, and the vertical distance h1 from the top of the ignition device 200 to the upper end surface of the limiting structure 204 is greater than the vertical distance h2 from the top of the ignition device 200 to the discharge end 400 of the inner ring fire cover. The umbrella-shaped limiting structure 204 covering the upper end surface of the annular boss 300 is an insulating material, and there is an insulating limiting structure 204 between the top of the ignition device 200 and the upper end surface of the annular boss 300, and the vertical distance h1 from the top of the ignition device 200 to the upper end surface of the limiting structure 204 is greater than the vertical distance h2 from the top of the ignition device 200 to the discharge end 400 of the inner ring fire cover, further preventing the occurrence of creepage. In this embodiment, Solution three is selected, and in other alternative embodiments, selection can be made as needed.

[0069] 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. A burner, characterized in that: It includes a gas mixing base, an ignition device and an annular boss. The gas mixing base is provided with a through hole. The bottom end of the annular boss is connected to the gas mixing base and is integrally formed with the gas mixing base. The top end of the annular boss extends upward in a vertical direction, and the annular boss surrounds the through hole. The ignition device vertically passes through the through hole and the annular boss, and there is a gap between the inner wall surface of the annular boss and the outer peripheral surface of the ignition device.

2. The burner according to claim 1, characterized in that The diameter of the cross section of the inner wall surface of the annular boss is d1, and the diameter of the cross section of the outer peripheral surface of the ignition device is d2, and d1 is: d1≥d2+1.2mm.

3. The burner according to claim 1, characterized in that The vertical distance from the top of the ignition device to the upper end surface of the annular boss is h1, and the vertical distance from the top of the ignition device to the discharge end of the inner ring fire cover is h2, h1>h2.

4. The burner according to claim 3, characterized in that The h1 is: 11mm≤h1≤15mm, and the h2 is: 3mm≤h2≤4.5mm.

5. The burner according to claim 1, characterized in that The gas mixing base includes a base body and a gas mixing chamber, the gas mixing chamber is arranged on the base body, the through hole is opened in the gas mixing chamber, the annular boss is connected to the gas mixing chamber, the bottom of the ignition device is connected to the base body, and the top of the ignition device passes through the gas mixing chamber.

6. The burner according to claim 5, characterized in that The outer peripheral surface of the ignition device is provided with a protrusion, the top surface of the base body is provided with a supporting groove, and the protrusion abuts against the supporting groove.

7. The burner according to claim 1, characterized in that: The gas mixing base is integrally formed, and the ignition device includes an ignition needle, an insulator and a limiting structure. The insulator circumferentially wraps around the ignition needle, the limiting structure is connected to the outer circumferential surface of the insulator, and the bottom surface of the limiting structure is placed on the upper end surface of the annular boss.

8. The burner according to claim 7, characterized in that The limiting structure is in an umbrella shape.

9. The burner according to claim 8, characterized in that The outer diameter of the upper end surface of the annular boss is smaller than the outer diameter of the bottom surface of the limiting structure.

10. The burner according to claim 9, characterized in that The material of the limiting structure is insulating material; And / or, the vertical distance from the top of the ignition device to the upper end surface of the limiting structure is greater than the vertical distance from the top of the ignition device to the discharge end of the inner ring fire cover.

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