CN214370177U - Flame projecting cover and combustor thereof - Google Patents
Flame projecting cover and combustor thereof Download PDFInfo
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- CN214370177U CN214370177U CN202023139851.4U CN202023139851U CN214370177U CN 214370177 U CN214370177 U CN 214370177U CN 202023139851 U CN202023139851 U CN 202023139851U CN 214370177 U CN214370177 U CN 214370177U
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Abstract
The utility model relates to the technical field of burner flame spraying covers, in particular to a flame spraying cover, which comprises a flame spraying cover body, wherein the flame spraying cover body is respectively provided with a plurality of circles of flame spraying holes along the axial direction, namely a main flame hole and a stable flame hole; the flame spraying cover body is provided with an outer convex arc-shaped top wall, and the main flame holes and the stable flame holes are arranged on the top wall. The flame cap can have a larger heating area under the condition of smaller diameter, so that the flame holes can be supplemented with sufficient air, and the flame cap can generate heat uniformly.
Description
Technical Field
The utility model relates to a combustor flame projecting lid field, more specifically relates to a flame projecting lid and combustor thereof.
Background
The fire shapes of atmospheric burners of cooking utensils generally have two kinds of direct fire and rotary fire, are mature in technology, have the advantages of large fire power, stable performance and the like, but the problem of uneven heating is easy to occur; the infrared burner belongs to a full premix burner, a plurality of circles of flame spray holes are arranged on a flame spray cover, all the flame spray holes burn simultaneously, and the infrared burner has the advantages that all the positions of the flame spray cover generate heat uniformly, and the like, but the diameter of the flame spray cover is generally larger and heavier, and the heat load is lower.
The Chinese patent publication with the publication number of "CN 110296405A" and the publication number of 2019, 10.1 discloses a burner fire cover, wherein a fire spraying hole is arranged on a fire cover body and is respectively a circle of main flame holes and a circle of stable flame holes, and in order to fully supplement air to the fire spraying holes, the distance between the main flame holes and the main flame holes needs to be increased, so that the diameter of the fire spraying cover is increased, and the problem that the fire spraying cover is large in diameter and heavy is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome at least one defect among the prior art, provide a flame projecting lid, can reduce the diameter of flame projecting lid, also can let flame projecting lid each department evenly generate heat simultaneously.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the flame spraying cover comprises a flame spraying cover body, wherein the flame spraying cover body is provided with a plurality of circles of flame spraying holes which are respectively a main flame hole and a stable flame hole; the flame spraying cover body is provided with an outer convex arc-shaped top wall, and the main flame holes and the flame stabilizing holes are arranged on the top wall.
In foretell technical scheme, on the flame projecting of equal diameter size was covered, the arc-shaped roof of evagination had a bigger surface area than other shapes, and when the same flame projecting hole quantity of overall arrangement, the arc-shaped roof of evagination made the interval between the flame projecting hole bigger, more was favorable to the replenishment of air between the flame projecting hole for under the diameter design less condition with the flame projecting lid, also can let main flame hole and steady flame hole all obtain abundant air replenishment, realize evenly generating heat.
In one embodiment, the main flame holes are provided with one circle, the flame stabilizing holes are provided with more than two circles, and one circle of main flame holes are positioned between two circles of flame stabilizing holes.
In one embodiment, the axes of the fire holes form an inclined angle with the horizontal plane, and the inclined angles of the fire holes in each circle are different. I.e. the orientation of each circle of the flame-spraying holes is not consistent.
In one embodiment, the axis of the main flame hole forms an inclination angle of 35-50 degrees with the horizontal plane.
In one embodiment, the flame stabilizing holes are provided with three circles, namely a direct-injection flame stabilizing hole, an oblique-injection flame stabilizing hole and an external flame stabilizing hole.
In one embodiment, the axis of the direct-injection flame-stabilizing hole forms an inclination angle of 85-95 degrees with the horizontal plane; the inclined angle formed by the axis of the inclined spraying flame stabilizing hole and the horizontal plane is 55-65 degrees; the inclined angle formed by the axis of the outer flame stabilizing hole and the horizontal plane is 20-30 degrees.
In one embodiment, two adjacent circles of the flame holes are arranged in a staggered mode, and each flame hole is located on the midline between two flame holes of the next circle.
In one embodiment, the diameter of the flame-spraying cover body is 50-100 mm.
In one embodiment, the material of the flame-spraying cover body is copper, stainless steel or cast iron.
A combustor comprises the flame spraying cover.
The utility model discloses a flame projecting lid compares with the background art, and the beneficial effect of production is: the flame cap can have a larger heating area under the condition of smaller diameter, so that the flame holes can be supplemented with sufficient air, and the flame cap can generate heat uniformly.
Drawings
Fig. 1 is a schematic structural view of a flaming cover of the present invention;
fig. 2 is a top view of a flaming cover according to the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a sectional view B-B of fig. 2.
In the drawings: 1-a flame-spraying cover body; 101-a top wall; 2-main flame holes; 3-flame stabilizing holes; 301-direct injection flame stabilizing holes; 302-oblique flame-spraying stabilizing holes; 303-outer flame stabilizing holes.
Detailed Description
Examples
As shown in fig. 1-2, an embodiment of a fire-spraying cover includes a fire-spraying cover body 1, wherein the fire-spraying cover body 1 is respectively provided with a plurality of fire-spraying holes, which are respectively a main flame hole 2 and a stable flame hole 3; the flame spraying cover body 1 is provided with a convex arc-shaped top wall 101, and the main flame holes 2 and the stable flame holes 3 are arranged on the top wall 101.
Cover at the flame that equal diameter size, the arc-shaped roof 101 of evagination has a bigger surface area than other shapes, and when the same flame projecting hole quantity of overall arrangement, arc-shaped roof 101 of evagination makes the interval between the flame projecting hole bigger, more is favorable to the replenishment of air between the flame projecting hole for under the diameter design less condition with the flame projecting lid, also can let main flame hole 2 and steady flame hole 3 obtain abundant air replenishment, realize evenly generating heat.
In one embodiment, the main flame holes 2 are provided with one circle, and the flame stabilizing holes 3 are provided with more than two circles. The diameter of the flame stabilizing holes 3 is smaller than that of the main flame holes 2, the resistance is larger when the gas passes through the flame stabilizing holes 3, so that the air speed is reduced, and the flame stabilizing effect is achieved. Because the interval between the arc-shaped roof 101 of evagination makes the flame jet is bigger, and the replenishment of air between the main flame hole 2 is more, and unstable phenomenon easily appears in the flame of main flame hole 2 spun, for promoting the stability that main flame hole 2 goes out the fire, makes round main flame hole 2 be located wherein between two circle flame holes 3, through being located main flame hole 2 top and the flame holes 3 that stabilize of below, makes main flame hole 2 spun flame more stable.
In one embodiment, the axes of the fire holes form an inclined angle with the horizontal plane, and the inclined angles of the fire holes in each circle are different. Flame interference can lead to the fire hole burning unstable, appears the flame phenomenon even, makes secondary air more difficult to supply between the fire hole, and the gas is forced to supply secondary air to burning more outside, makes flame length increase, and in the serious time, when outer flame has not yet formed, flame just contacted earlier with the bottom of a boiler, and the gas fails the complete combustion and leads to flue gas surge and inefficiency scheduling problem to appear. And the inclination angle of each circle of flame spraying holes is different, and the flame orientation of each circle of flame spraying holes is different, because the interference between flames is avoided.
In one embodiment, as shown in fig. 3, the axis of the main flame holes 2 forms an inclination angle a of 40-50 degrees with the horizontal plane.
In one embodiment, as shown in fig. 1, the flame stabilizing hole 3 is provided with three circles, namely a direct-injection flame stabilizing hole 301, an oblique-injection flame stabilizing hole 302 and an external flame stabilizing hole 303; theoretically, the more the fire hole rows are, the better the flame stabilizing effect is, but at the same time, because of the increase of the fire hole rows, the air supplement of the fire holes inside becomes very difficult. The three circles of flame stabilizing holes 3 are arranged, so that a good flame stabilizing effect can be realized, and the sufficient air supplement of the flame stabilizing holes 3 can be ensured. In the present embodiment, the main flame holes 2 are located between the oblique-spray flame-stabilizing holes 302 and the outer flame-stabilizing holes 303.
In one embodiment, as shown in fig. 3 and 4, the axis of the direct-injection flame-stabilizing hole 301 forms an inclination angle b of 90 degrees with the horizontal plane; the inclined angle c formed by the axis of the inclined spraying flame stabilizing hole 302 and the horizontal plane is 60 degrees; the inclined angle d formed by the axis of the outer flame stabilizing hole 303 and the horizontal plane is 25 degrees. The orientations of the direct-injection flame-stabilizing holes 301, the oblique-injection flame-stabilizing holes 302 and the external flame-stabilizing holes 303 are respectively positioned at three different angles, and the angles are relatively large, so that the problem that the flames are easily interfered because the angles between different rings of flame-stabilizing holes 3 are similar is solved.
In one embodiment, as shown in fig. 2, two adjacent circles of the fire holes are arranged in a staggered manner, and each fire hole is located on a midline between two fire holes of the next circle. The farther the distance between the fire holes, the more easily the distance from the flame is generated, and conversely, the closer the distance between the fire holes, the more difficultly the distance from the flame is generated, namely, the flame stabilizing effect is better. Except the fire-jet holes positioned in the circle at the lowest part, any fire-jet hole of each circle of the rest fire-jet holes is positioned on the center line of the two fire-jet holes in the next circle, namely, two fire-jet holes which correspond to the fire-jet holes at equal intervals are arranged, and the mutual flame stabilizing effect among the fire-jet holes is achieved. The phenomenon that the distance between the flame spraying holes is too far away from the flame and the distance is too close to influence the combustion performance is avoided.
In one embodiment, the diameter of the cap body 1 is 50-100 mm. The diameter of the flame-throwing cover can be within 100mm, so that the flame-throwing cover is smaller in volume and lighter in weight.
In one embodiment, the material of the flaming cover body 1 is copper, stainless steel or cast iron.
Embodiments of a burner are also provided, including a cap as described in any of the above embodiments.
In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a flame projecting lid, includes flame projecting lid body (1), flame projecting lid body (1) is provided with a plurality of rings flame projecting hole respectively, is main flame hole (2) and steady flame hole (3) respectively, its characterized in that, flame projecting lid body (1) is provided with evagination curved roof (101), main flame hole (2) and steady flame hole (3) all set up in on roof (101).
2. The flaming cover according to claim 1, characterized in that the main flame holes (2) are provided with one circle, the flame stabilizing holes (3) are provided with more than two circles, and one circle of main flame holes (2) is located between two circles of flame stabilizing holes (3).
3. The fire cap of claim 2, wherein the axes of the fire holes are all at an oblique angle to the horizontal, and the oblique angle of each fire hole circle is not uniform.
4. The flame cap according to claim 3, characterized in that the axis of the main flame holes (2) forms an angle of inclination with the horizontal plane of 35-50 degrees.
5. The flame cap according to claim 3, characterized in that the flame stabilizing hole (3) is provided with three rings, respectively a direct-injection flame stabilizing hole (301), an oblique-injection flame stabilizing hole (302) and an outer flame stabilizing hole (303).
6. The flame cap according to claim 5, characterized in that the axis of the direct-injection flame-stabilizing hole (301) forms an inclination angle of 85-95 degrees with the horizontal plane; the inclined angle formed by the axis of the inclined spraying flame stabilizing hole (302) and the horizontal plane is 55-65 degrees; the inclination angle formed by the axis of the outer flame stabilizing hole (303) and the horizontal plane is 20-30 degrees.
7. The cap of claim 2, wherein the adjacent two circles of fire holes are staggered, and each fire hole is located on a midline between two fire holes of the next circle.
8. The cap according to claim 1, characterized in that the diameter of the cap body (1) is 50-100 mm.
9. The cap of claim 1, wherein the material of the cap body (1) is one of copper, stainless steel or cast iron.
10. A burner comprising the fire cover of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023139851.4U CN214370177U (en) | 2020-12-23 | 2020-12-23 | Flame projecting cover and combustor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023139851.4U CN214370177U (en) | 2020-12-23 | 2020-12-23 | Flame projecting cover and combustor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214370177U true CN214370177U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023139851.4U Active CN214370177U (en) | 2020-12-23 | 2020-12-23 | Flame projecting cover and combustor thereof |
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| CN (1) | CN214370177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594735A (en) * | 2019-09-18 | 2019-12-20 | 广东万和电气有限公司 | Outer ring fire lid and combustor |
-
2020
- 2020-12-23 CN CN202023139851.4U patent/CN214370177U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594735A (en) * | 2019-09-18 | 2019-12-20 | 广东万和电气有限公司 | Outer ring fire lid and combustor |
| CN110594735B (en) * | 2019-09-18 | 2024-04-12 | 广东万和电气有限公司 | Outer ring fire cover and burner |
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