Inner ring fire cover and combustor comprising same

Abstract

The utility model provides an inner ring fire cover and a burner comprising the same, the inner ring fire cover comprises an inner ring fire cover body and an ignition needle, the inner ring fire cover body is provided with a plurality of diversion trenches and fire holes, the diversion trenches extend from the outer peripheral surface of the inner ring fire cover body to the radial inner side of the inner ring fire cover body, and the fire holes are formed in the inner ring fire cover body. The axis of any flow guide groove is at least intersected with the axis of the other flow guide groove to form an intersection point, openings of the flow guide grooves face the radial outer side of the inner ring fire cover, the intersection point is close to the discharge end of the ignition needle, and the fire hole is communicated with the flow guide grooves. Fuel gas enters the flow guide grooves through the fire holes and flows in the axis direction of the flow guide grooves, the fuel gas in the flow guide grooves flows out and then converges and collides at the ignition needle, the fuel gas forms a local high-concentration area near the discharging end of the ignition needle, electric arcs formed by discharging of the ignition needle can ignite the fuel gas more easily, ignition deflagration is facilitated, and therefore the ignition success rate is increased.

Description

Technical Field

[0001] The utility model relates to an inner ring fire cover and a burner comprising the same. Background Art

[0002] The ignition success rate of stove burners has always been an important factor affecting user experience. A low ignition success rate means low safety, that is, it takes multiple attempts to successfully ignite. During the multiple launches, safety hazards such as sparks and gas leaks may occur. In addition, a low ignition success rate means low energy utilization, and multiple ignitions cause energy waste and reduce efficiency. A high ignition success rate means that users can ignite the stove quickly and conveniently, improving user experience. The ignition success rate of existing burners is low. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect of low ignition success rate of the burner in the prior art, and to provide an inner ring fire cover and a burner comprising the same.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] An inner ring fire cover, the inner ring fire cover comprises an inner ring fire cover body and an ignition needle, the inner ring fire cover body is provided with a plurality of guide grooves and fire holes, the guide grooves extend from the outer peripheral surface of the inner ring fire cover body to the radial inner side of the inner ring fire cover body, the axis of any one of the guide grooves intersects with the axis of at least another one of the guide grooves and forms an intersection, the opening of the guide groove faces the radial outer side of the inner ring fire cover, and the intersection is close to the discharge end of the ignition needle, the fire hole is connected to the plurality of guide grooves,

[0006] In this scheme, guide grooves are opened and intersected at the discharge end of the ignition needle. The gas enters the guide groove through the fire hole and flows along the axial direction of the guide groove. The gas in multiple guide grooves converges and collides at the ignition needle after flowing out, so that the gas forms a local high concentration area near the discharge end of the ignition needle. The arc formed by the discharge of the ignition needle can more easily ignite the gas, which is conducive to ignition and deflagration, thereby improving the ignition success rate.

[0007] Preferably, the width of the guide groove is smaller than the diameter of the fire hole.

[0008] In this scheme, the width of the guide groove is smaller than the diameter of the fire hole. Under the same pressure, the flow rate of the gas in the guide groove is greater than the flow rate of the gas in the fire hole, which accelerates the gas. When high-speed gas converges, molecular collisions are more frequent and the aggregation speed is faster. Gas molecules are more likely to form high-concentration areas, which is conducive to ignition and deflagration, thereby improving the ignition success rate.

[0009] Preferably, the axes of all the guide grooves intersect at the same point.

[0010] In this solution, the axes of all the guide groove openings intersect at the same point, so that the gas molecules collide more frequently and it is easier for the gas molecules to form a high concentration area, which is conducive to ignition and deflagration, thereby improving the ignition success rate.

[0011] Preferably, the inner ring fire cover is also provided with a wide groove, which is grooved from the outer peripheral surface of the inner ring fire cover body to the radial inner side of the inner ring fire cover body, and the openings of multiple guide grooves are connected to the wide groove, the intersection is located in the wide groove, and the discharge end of the ignition needle faces the opening of the wide groove.

[0012] In this solution, a wide groove is provided so that dripping oil stains will not clog the guide groove, thereby improving the anti-clogging ability of the guide groove. In addition, the wide groove can reduce external interference to the guide groove and improve the anti-interference ability of the guide groove.

[0013] Preferably, the ignition needle includes a plurality of discharge ends.

[0014] In this solution, the ignition needle is provided with multiple discharge ends, and an arc is formed between the multiple discharge ends. Since the discharge ends are all located in the high concentration area of ​​the fuel gas, the ignition success rate is improved.

[0015] Preferably, the wide groove is extended along the circumferential direction of the inner ring fire cover body, and the plurality of discharge ends are projected along the radial direction of the inner ring fire cover body and are located within the wide groove.

[0016] In this scheme, the wide groove is extended along the circumferential direction of the inner ring fire cover body to expand the size of the high gas concentration area formed, and multiple discharge ends are projected in the radial direction of the inner ring fire cover body within the wide groove to ensure that the discharge ends are all located in the middle position of the high gas concentration area, where the gas concentration is higher, thereby improving the ignition success rate.

[0017] Preferably, the plurality of discharge ends are equidistantly arranged along the circumference of the inner ring fire cover body.

[0018] In this solution, multiple discharge ends are arranged at equal distances, so that the probability of arc formation between adjacent discharge ends is equal, and the arc can be generated evenly, thereby improving the ignition stability and the ignition success rate.

[0019] Preferably, the openings of the plurality of guide grooves are arranged at the groove bottom of the wide groove, and the groove width of the wide groove is not less than the sum of the groove widths of the plurality of guide grooves.

[0020] In this solution, the opening of the guide groove is set at the bottom of the wide groove to prevent oil stains from adhering to and clogging the guide groove, thereby reducing the ignition success rate. The width of the wide groove is limited to allow the gas to be fully mixed in the wide groove to form a sufficiently large high-concentration gas area, thereby improving the ignition success rate.

[0021] Preferably, the inner ring fire cover also includes a protective umbrella, which is connected to the outer circumferential surface of the inner ring fire cover body and protrudes from the outer circumferential surface of the inner ring fire cover body in the radial direction of the inner ring fire cover body, and the projection of the protective umbrella in the vertical direction covers the ignition needle.

[0022] In this solution, setting up a protective umbrella can prevent oil from falling and covering the discharge end of the ignition needle, making it difficult to form an arc at the discharge end and thus reducing the ignition success rate. Setting up a protective umbrella can also prevent oil from clogging the wide groove and guide groove, further improving the anti-blocking and anti-interference capabilities.

[0023] A burner comprises the inner ring fire cover as described above.

[0024] In this scheme, guide grooves are opened and intersected at the discharge end of the ignition needle. The gas enters the guide groove through the fire hole and flows along the axial direction of the guide groove. The gas in multiple guide grooves converges and collides at the ignition needle after flowing out, so that the gas forms a local high concentration area near the discharge end of the ignition needle. The arc formed by the discharge of the ignition needle can more easily ignite the gas, which is conducive to ignition and deflagration, thereby improving the ignition success rate.

[0025] The positive progressive effect of the utility model is that: guide grooves are opened and intersected at the discharge end of the ignition needle, the gas enters the guide grooves through the fire hole and flows along the axial direction of the guide grooves, and the gas in multiple guide grooves converges and collides at the ignition needle after flowing out, so that the gas forms a local high concentration area near the discharge end of the ignition needle. The arc formed by the discharge of the ignition needle can more easily ignite the gas, which is conducive to ignition and deflagration, thereby improving the ignition success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional view of an inner ring fire cover according to an embodiment of the utility model.

[0027] Figure 2 It is a front view of an inner ring fire cover according to an embodiment of the utility model.

[0028] Figure 3 It is a cross-sectional view of an inner ring fire cover along the AA direction according to an embodiment of the present invention.

[0029] Figure 4 This is a partial enlarged view of the B area of ​​the inner ring fire cover according to an embodiment of the utility model.

[0030] Figure 5 It is a front view of the inner ring fire cover body according to one embodiment of the utility model.

[0031] Figure 6 This is a three-dimensional view of an ignition needle according to an embodiment of the present utility model.

[0032] Description of reference numerals:

[0033] Inner ring fire cover body 100

[0034] Fire Hole 101

[0035] Diversion trough 102

[0036] Wide slot 103

[0037] Umbrella 104

[0038] Ignition needle 200

[0039] Discharge end 201 DETAILED DESCRIPTION

[0040] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0041] like Figures 1 to 6 As shown, this embodiment discloses an inner ring fire cover, which includes an inner ring fire cover body 100 and an ignition needle 200. Figure 4 As shown, the inner ring fire cover body 100 is provided with two guide grooves 102 and a plurality of fire holes 101, the guide grooves 102 are extended from the outer peripheral surface of the inner ring fire cover body 100 to the radial inner side of the inner ring fire cover body 100, the axis of the guide groove 102 intersects with the axis of another guide groove 102 and forms an intersection, the opening of the guide groove 102 faces the radial outer side of the inner ring fire cover, and the intersection is close to the discharge end 201 of the ignition needle 200, and the plurality of fire holes 101 are connected to the two guide grooves 102. A guide groove 102 is provided and intersected at the discharge end 201 of the ignition needle 200. The gas enters the guide groove 102 through the fire hole 101 and flows along the axial direction of the guide groove 102. The gas in multiple guide grooves 102 converges and collides at the ignition needle 200 after flowing out, so that the gas forms a local high concentration area near the discharge end 201 of the ignition needle 200. The arc formed by the discharge of the ignition needle 200 can more easily ignite the gas, which is beneficial to ignition and deflagration, thereby improving the ignition success rate.

[0042] In this embodiment, the number of guide grooves 102 is two. In other alternative embodiments, the number of guide grooves 102 is at least two, and the axis of any guide groove 102 intersects with the axis of at least one other guide groove 102. The more guide grooves 102 there are, the easier it is for gas molecules in the fuel gas to collide, thereby improving the ignition success rate. The number of guide grooves 102 is selected based on actual conditions and is not specifically limited here. Preferably, the axes of all guide grooves 102 intersect at the same point, and the axes of all openings of the guide grooves 102 intersect at the same point, so that gas molecules collide more frequently and gas molecules are more likely to form high-concentration areas, which is conducive to ignition and deflagration, thereby improving the ignition success rate.

[0043] like Figure 4 As shown, the groove width of the guide groove 102 is smaller than the diameter of the fire hole 101. The fire hole 101 is connected to the guide groove 102. Under the same pressure, the flow rate of the gas in the guide groove 102 is greater than the flow rate of the gas in the fire hole 101, that is, the gas is accelerated, and when the high-speed gas converges, the molecular collision is more frequent, the gathering speed is faster, and the gas molecules are more likely to form a high-concentration area, which is conducive to ignition and deflagration, thereby improving the ignition success rate.

[0044] like Figure 4 As shown, the inner ring fire cover is also provided with a wide groove 103, which is grooved from the outer circumference of the inner ring fire cover body 100 to the radial inner side of the inner ring fire cover body 100, and the openings of multiple guide grooves 102 are connected to the wide groove 103, and the intersection is located in the wide groove 103, and the discharge end 201 of the ignition needle 200 faces the opening of the wide groove 103. The wide groove 103 is provided so that dripping oil stains will not block the guide groove 102, thereby improving the anti-blocking ability of the guide groove 102, and the wide groove 103 can reduce the external interference of the guide groove 102, and improve the anti-interference ability of the guide groove 102.

[0045] like Figure 1 , Figure 6 As shown, the ignition needle 200 includes three discharge ends 201. The ignition needle 200 is provided with three discharge ends 201. Two arcs are formed between the three discharge ends 201. When one of the arcs is difficult to form, an arc can be formed through the other arc to ignite the gas, thereby improving the ignition success rate. In other alternative embodiments, the specific number of the plurality of discharge ends 201 is selected according to actual conditions. Even if there are only two discharge ends 201, the ignition success rate can be improved because the two discharge ends 201 are both located in a high concentration area of ​​the gas.

[0046] like Figure 2 As shown, the wide groove 103 is extended along the circumferential direction of the inner ring fire cover body 100, and the multiple discharge ends 201 are projected in the radial direction of the inner ring fire cover body 100 and are located in the wide groove 103. The wide groove 103 is extended along the circumferential direction of the inner ring fire cover body 100 to expand the size of the high-concentration gas area formed, and the multiple discharge ends 201 are projected in the radial direction of the inner ring fire cover body 100 and are located in the wide groove 103, ensuring that the discharge ends 201 are all located in the middle of the high-concentration gas area, where the gas concentration is higher, thereby improving the ignition success rate.

[0047] Figure 6 As shown, multiple discharge ends 201 are equidistantly arranged along the circumference of the inner ring fire cover body 100, so that the probability of forming an arc between adjacent discharge ends 201 is equal, the arc can be generated evenly, the overall arc is in a circular arc shape, and is equidistantly close to the opening of the wide groove 103, realizing multi-point ignition, thereby improving the ignition stability and the ignition success rate.

[0048] Figure 4 As shown, the openings of the plurality of guide grooves 102 are arranged at the bottom of the wide groove 103, and the groove width of the wide groove 103 is not less than the sum of the groove widths of the plurality of guide grooves 102. The openings of the guide grooves 102 are arranged at the bottom of the wide groove 103 to prevent oil stains from adhering to and blocking the guide grooves 102, thereby reducing the ignition success rate, and limiting the groove width of the wide groove 103, so that the gas is fully mixed in the wide groove 103, forming a sufficiently large gas high concentration area, thereby improving the ignition success rate.

[0049] In this embodiment, the vertical width of the wide groove 103 is 3-6 mm, and the groove width of the guide groove 102 is 0.6-1 mm. In other alternative embodiments, the groove widths of the wide groove 103 and the guide groove 102 are selected according to actual needs and are not specifically limited here.

[0050] Figure 3 As shown, the inner ring fire cover also includes a protective umbrella 104, which is connected to the outer peripheral surface of the inner ring fire cover body 100 and protrudes from the outer peripheral surface of the inner ring fire cover body 100 in the radial direction of the inner ring fire cover body 100. The projection of the protective umbrella 104 in the vertical direction covers the ignition needle 200. The provision of the protective umbrella 104 can prevent oil stains from falling and covering the discharge end 201 of the ignition needle 200, making it difficult for the discharge end 201 to form an arc, thereby reducing the ignition success rate. The provision of the protective umbrella 104 can also prevent oil stains from clogging the wide groove 103 and the guide groove 102, further improving the anti-blocking ability and anti-interference ability.

[0051] Figure 3 As shown, the inner ring fire cover is provided with a protective umbrella 104 and a wide groove 103, which cooperate with each other. First, the protective umbrella 104 blocks the oil stains that drip directly, preventing the ignition needle 200 and the guide groove 102 from being covered by oil stains, thereby reducing the ignition success rate, and avoiding external interference during ignition, thereby improving the anti-infection ability. Then, the wide groove 103 is connected to the guide groove 102, rather than directly opening the guide groove 102 to the outer peripheral surface of the inner ring fire cover body 100, further preventing the oil stains from clogging the guide groove 102, thereby improving the anti-interference ability and anti-blocking ability of the guide groove 102, and improving the ignition success rate.

[0052] This embodiment also discloses a burner, which includes the inner ring fire cover as described above. A guide groove 102 is provided and intersected at the discharge end 201 of the ignition needle 200. The gas enters the guide groove 102 through the fire hole 101 and flows along the axis direction of the guide groove 102. After the gas in the multiple guide grooves 102 flows out, it converges and collides at the ignition needle 200, so that the gas forms a local high concentration area near the discharge end 201 of the ignition needle 200. The arc formed by the discharge of the ignition needle 200 is more likely to ignite the gas, which is conducive to ignition and deflagration, thereby improving the ignition success rate.

[0053] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0054] 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 inner ring fire cover, characterized in that: The inner ring fire cover includes an inner ring fire cover body and an ignition needle. The inner ring fire cover body is provided with a plurality of guide grooves and fire holes. The guide grooves extend from the outer peripheral surface of the inner ring fire cover body to the radial inner side of the inner ring fire cover body. The axis of any one of the guide grooves intersects with the axis of at least another one of the guide grooves and forms an intersection. The opening of the guide groove faces the radial outer side of the inner ring fire cover, and the intersection is close to the discharge end of the ignition needle. The fire hole is connected to the plurality of guide grooves.

2. The inner ring fire cover according to claim 1, characterized in that: The width of the guide groove is smaller than the diameter of the fire hole.

3. The inner ring fire cover according to claim 1, characterized in that: The axes of all the guide grooves intersect at the same point.

4. The inner ring fire cover according to claim 1, characterized in that: The inner ring fire cover is also provided with a wide groove, which is grooved from the outer peripheral surface of the inner ring fire cover body to the radial inner side of the inner ring fire cover body, and the openings of multiple guide grooves are connected to the wide groove. The intersection is located in the wide groove, and the discharge end of the ignition needle faces the opening of the wide groove.

5. The inner ring fire cover according to claim 4, characterized in that: The ignition needle includes a plurality of discharge ends.

6. The inner ring fire cover according to claim 5, characterized in that: The wide groove is extended along the circumferential direction of the inner ring fire cover body, and the plurality of discharge ends are projected in the radial direction of the inner ring fire cover body and are located in the wide groove.

7. The inner ring fire cover according to claim 6, characterized in that: The plurality of discharge ends are arranged equidistantly along the circumference of the inner ring fire cover body.

8. The inner ring fire cover according to claim 4, characterized in that: The openings of the plurality of guide grooves are arranged at the groove bottom of the wide groove, and the groove width of the wide groove is not less than the sum of the groove widths of the plurality of guide grooves.

9. The inner ring fire cover according to claim 1, characterized in that: The inner ring fire cover also includes a protective umbrella, which is connected to the outer circumferential surface of the inner ring fire cover body and protrudes from the outer circumferential surface of the inner ring fire cover body in the radial direction of the inner ring fire cover body, and the projection of the protective umbrella in the vertical direction covers the ignition needle.

10. A burner, characterized in that: The burner comprises an inner ring fire cover as described in any one of claims 1-9.

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