Swirling fire cap assembly, burner and gas stove

Abstract

The present invention discloses a swirling fire cap assembly, a burner and a gas stove. The swirling fire cap assembly includes a first annular fire cap and a second annular fire cap. The first annular fire cap is provided with first strip-shaped holes arranged in a ring shape and extending in the ring width direction. Between two adjacent first strip-shaped holes at the edge part of the first annular fire cap, there are a first strip-shaped boss and a second strip-shaped boss. The first strip-shaped boss and the second strip-shaped boss on both sides of the first strip-shaped hole jointly enclose a fire cavity. The second annular fire cap is installed on the first annular fire cap, and the lower end surface of the second annular fire cap abuts against the upper end surfaces of the first strip-shaped boss and the second strip-shaped boss. The second annular fire cap is correspondingly provided with second strip-shaped holes arranged in a ring shape corresponding to the first strip-shaped holes. The second annular fire cap, the first strip-shaped boss and the second strip-shaped boss jointly enclose an air cavity to supplement secondary air to the flame near the central part.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stove components, and particularly to a swirling fire cover assembly, a burner and a gas stove. Background Art

[0002] At present, most of the cookers on the market are atmospheric burners. The burners are divided into direct fire and swirling fire according to the flame shape. Since the direct fire has circular fire holes distributed along the circumference of the outer ring fire cover, the secondary air supplement is sufficient and the emission of harmful gas CO is low. However, since the fire holes of the direct fire burner are arranged on the outermost ring circumference, the flame is far from the bottom of the pot, and there is a large flame-free area between the upper ring fire and the middle fire, resulting in low burner efficiency and uneven firepower.

[0003] The swirling fire burner extends the flame area by setting a slit-type fire trough, increasing the flame contact area of the bottom of the pot. Therefore, the swirling fire burner just overcomes this defect of the direct fire burner, which is beneficial to improving the combustion efficiency of the burner and enhancing the firepower uniformity.

[0004] However, the existing swirling fire burner has the disadvantage of poor secondary air supplement. The secondary air supplement of the inner fire trough is worse, and the emission of harmful gas CO is high, resulting in a higher height of the bottom of the pot of the swirling fire burner from the burner than that of the direct fire burner, and the efficiency advantage cannot be directly converted. Summary of the Invention

[0005] The object of the present invention is to provide a swirling fire cover assembly, a burner and a gas stove, mainly to solve the secondary air supplement of the swirling fire burner. Its advantages are: since the first annular fire cover and the second annular fire cover jointly enclose an air cavity and a fire cavity at the edge part, when the gas flows upward to the outside, the air pressure at the air cavity position decreases, and the outside air around the edge part is sucked through the air cavity towards the center direction for secondary mixed combustion, improving the secondary air supplement of the flame in the central part, thereby improving the thermal efficiency of the swirling fire burner, reducing the carbon monoxide emission and saving energy.

[0006] A swirling burner cap assembly of the present invention includes a first annular burner cap and a second annular burner cap. The first annular burner cap is provided with first strip-shaped holes arranged in a ring and extending in the ring width direction. Between the edge portion of the first annular burner cap and two adjacent first strip-shaped holes, there are provided a first strip-shaped convex platform and a second strip-shaped convex platform. The extending directions of the first strip-shaped convex platform and the second strip-shaped convex platform are the same as the length direction of the first strip-shaped hole. The first strip-shaped convex platforms and the second strip-shaped convex platforms on both sides of the first strip-shaped hole jointly enclose a combustion chamber. The second annular burner cap is installed on the first annular burner cap, and the lower end surface of the second annular burner cap abuts against the upper end surfaces of the first strip-shaped convex platform and the second strip-shaped convex platform. The second annular burner cap is correspondingly provided with second strip-shaped holes arranged in a ring corresponding to the first strip-shaped holes. The second annular burner cap, the first strip-shaped convex platform, and the second strip-shaped convex platform jointly enclose an air chamber to enhance the secondary air supply near the central part.

[0007] Another possible form of the swirling burner cap assembly of the present invention is:

[0008] Both the first annular burner cap and the second annular burner cap are umbrella-shaped rings.

[0009] The first annular burner cap includes a first inner ring side wall, a first annular top wall fixedly connected to the first inner ring side wall, and an outer ring side wall fixedly connected to the first annular top wall. Among them, a bent portion bent 130 degrees towards the edge is provided in the middle of the first inner ring side wall. The included angle between the first annular top wall and the first inner ring side wall is 120 degrees, and the included angle between the first annular top wall and the outer ring side wall is 112 degrees.

[0010] The second annular burner cap includes a second inner ring side wall and a second annular top wall. The included angle between the second annular top wall and the second inner ring side wall is correspondingly 120 degrees.

[0011] The lengths of the first strip-shaped convex platform and the second strip-shaped convex platform are 20% - 70% of the length of the first strip-shaped hole.

[0012] The included angle between the edge end of the first strip-shaped hole and the radial line of the first annular burner cap is 15 - 35 degrees.

[0013] There are twenty-eight first strip-shaped holes.

[0014] The present invention also provides a burner, including the above-mentioned swirling burner cap assembly.

[0015] A burner of the present invention further includes a gas distribution plate and an inner ring burner cap. Among them, the gas distribution plate includes an inner ring gas mixing chamber part and an outer ring gas mixing chamber part. The inner ring burner cap is installed on the inner ring gas mixing chamber part, the first annular burner cap is installed on the outer ring gas mixing chamber part, and the second annular burner cap is installed on the first annular burner cap.

[0016] The object of the present invention also provides a gas stove, including the burner described above.

[0017] A swirl fire cap assembly, a burner and a gas stove of the present invention have the following advantages compared with the prior art: Since the swirl fire cap assembly includes a first annular fire cap and a second annular fire cap, the first annular fire cap is provided with first strip-shaped holes arranged in a ring shape and extending in the ring width direction. Between the edge portion of the first annular fire cap and two adjacent first strip-shaped holes, there are a first strip-shaped boss and a second strip-shaped boss. The first strip-shaped boss and the second strip-shaped boss on both sides of the first strip-shaped hole jointly enclose a fire cavity to reduce the air consumption at the edge portion of the first annular fire cap. The second annular fire cap is installed on the first annular fire cap, and the lower end surface of the second annular fire cap abuts against the upper end surfaces of the first strip-shaped boss and the second strip-shaped boss. The second annular fire cap is correspondingly provided with second strip-shaped holes arranged in a ring shape corresponding to the first strip-shaped holes. The second annular fire cap, the first strip-shaped boss and the second strip-shaped boss jointly enclose an air cavity. In this way, the gas at the edge portion flows upward to the outside through the first strip-shaped holes, the fire cavity and the second strip-shaped holes, and the gas near the center flows upward to the outside through the first strip-shaped holes and the second strip-shaped holes. Since the gas has a certain speed when flowing from the first strip-shaped holes to the second strip-shaped holes, the pressure is low where the speed is fast. Thus, the outside air around the edge portion is entrained through the air cavity towards the center direction for secondary mixed combustion, improving the secondary air supply of the flame near the center portion, thereby improving the thermal efficiency of the swirl burner, reducing the emission of carbon monoxide and saving energy. Description of the Drawings

[0018] Figure 1 It is a disassembled schematic diagram of a swirl fire cap assembly of the present invention.

[0019] Figure 2 It is a perspective schematic diagram of a swirl fire cap assembly of the present invention.

[0020] Figure 3 It is a disassembled schematic diagram of a burner of the present invention.

[0021] Figure 4 It is a sectional view schematic diagram of a burner of the present invention.

[0022] Description of the Drawing Numbers

[0023] 1. First annular fire cap; 11. First strip-shaped hole; 12. First strip-shaped boss; 13. Second strip-shaped boss; 14. Fire cavity; 15. Air cavity; 16. First inner ring side wall; 17. First annular top wall; 18. Outer ring side wall;

[0024] 2. Second annular fire cap; 21. Second strip-shaped hole; 22. Second inner ring side wall; 23. Second annular top wall;

[0025] 3. Gas distribution plate; 31. Inner ring gas mixing cavity part; 32. Outer ring gas mixing cavity part;

[0026] 4. Inner ring burner cap. Specific embodiments

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed description will be omitted.

[0028] The terms "a", "an", "the", and "said" are used to denote the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to denote an open inclusion meaning and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.

[0029] The following in conjunction with the accompanying drawings Figures 1 to 4 A swirling burner cap assembly, a burner, and a gas stove of the present invention will be further described in detail.

[0030] A swirling burner cap assembly of the present invention, please refer to Figures 1 to 4 the relevant drawings, including a first annular burner cap 1 and a second annular burner cap 2.

[0031] The first annular burner cap 1 is provided with first strip-shaped holes 11 arranged in a ring and extending in the ring width direction. Between the edge portion of the first annular burner cap 1 and two adjacent first strip-shaped holes 11, there are provided a first strip-shaped convex platform 12 and a second strip-shaped convex platform 13, and the extending directions of the first strip-shaped convex platform 12 and the second strip-shaped convex platform 13 are the same as the length direction of the first strip-shaped holes 11.

[0032] The first strip-shaped convex platform 12 and the second strip-shaped convex platform 13 on both sides of the first strip-shaped holes 11 jointly enclose a fire cavity 14.

[0033] The second annular burner cap 2 is installed on the first annular burner cap 1 and is located above the first annular burner cap 1. The lower end surface of the edge portion of the second annular burner cap 2 abuts against the upper end surfaces of the first strip-shaped convex platform 12 and the second strip-shaped convex platform 13.

[0034] The second annular burner cap 2 is correspondingly provided with second strip-shaped holes 21 arranged in a ring corresponding to the first strip-shaped holes 11. The second annular burner cap 2, the first strip-shaped convex platform 12, and the second strip-shaped convex platform 13 jointly enclose an air cavity 15 at the edge portion.

[0035] In this way, the gas at the edge part flows upward through the first strip-shaped hole 11, the fire chamber 14, and the second strip-shaped hole 21 to the outside, and the gas near the center flows upward through the first strip-shaped hole 11 and the second strip-shaped hole 21 to the outside.

[0036] Since the gas has a certain velocity when flowing from the first strip-shaped hole 11 to the second strip-shaped hole 21, the pressure is low where the velocity is fast. Thus, the external air around the edge part is entrained through the air chamber 15 towards the center direction for secondary mixing combustion, enhancing the secondary air supplement for the flame near the center part, thereby improving the thermal efficiency of the swirling fire burner, reducing the emission of carbon monoxide, and saving energy.

[0037] For a swirling fire cap assembly of the present invention, please refer to Figures 1 to 4 the relevant drawings. On the basis of the previous technical solutions, it can also be that both the first annular fire cap 1 and the second annular fire cap 2 are umbrella-shaped rings.

[0038] For example, the height from the center part to the edge end of both the first annular fire cap 1 and the second annular fire cap 2 gradually decreases, so as to further enhance the secondary air supplement for the flame near the center part, thereby further improving the thermal efficiency of the swirling fire burner.

[0039] For a swirling fire cap assembly of the present invention, please refer to Figure 4 the relevant drawings. On the basis of the previous technical solutions, it can also be that the first annular fire cap 1 includes a first inner ring side wall 16, a first annular top wall 17 fixedly connected to the first inner ring side wall 16, and an outer ring side wall 18 fixedly connected to the first annular top wall 17. A gas mixing chamber is jointly enclosed by the first inner ring side wall 16, the first annular top wall 17, and the outer ring side wall 18. The first strip-shaped hole 11 is located on the first annular top wall 17 and the upper annular inclined surface of the first inner ring side wall 16. Both the first strip-shaped boss 12 and the second strip-shaped boss 13 are located on the edge part of the first annular top wall 17.

[0040] Among them, a bent part that bends 130 degrees towards the edge direction is provided in the middle of the first inner ring side wall 16. The included angle between the first annular top wall 17 and the first inner ring side wall 16 is 120 degrees, and the included angle between the first annular top wall 17 and the outer ring side wall 18 is 112 degrees. Of course, the bent part in the middle of the first inner ring side wall 16 is not limited to bending 130 degrees, the included angle between the first annular top wall 17 and the first inner ring side wall 16 is not limited to 120 degrees, and the included angle between the first annular top wall 17 and the outer ring side wall 18 is not limited to 112 degrees. Those skilled in the art can select the size of the included angle according to actual needs.

[0041] For a swirling fire cap assembly of the present invention, please refer to Figures 1 to 4With reference to the relevant drawings, on the basis of the foregoing technical solutions, it may also be: The second annular burner cap 2 includes a second inner ring side wall 22 and a second annular top wall 23, and the included angle between the second annular top wall 23 and the second inner ring side wall 22 is correspondingly 120 degrees, so that the shape of the second annular burner cap 2 is adapted to the upper shape of the first annular burner cap 1.

[0042] For a swirling burner cap assembly of the present invention, please refer to Figures 1 to 4 With reference to the relevant drawings, on the basis of the foregoing technical solutions, it may also be: The lengths of the first strip-shaped boss 12 and the second strip-shaped boss 13 are 20-70% of the length of the first strip-shaped hole 11, and when the length is 30-50% of the length of the first strip-shaped hole 11, the effect of secondary air replenishment is the best.

[0043] For a swirling burner cap assembly of the present invention, please refer to Figures 1 to 4 With reference to the relevant drawings, on the basis of the foregoing technical solutions, it may also be: When the included angle between the edge end of the first strip-shaped hole 11 and the radial line of the first annular burner cap 1 is 15-35 degrees, the thermal efficiency of the swirling flame is the best. Of course, the included angle between the edge end of the first strip-shaped hole 11 and the radial line of the first annular burner cap 1 is not limited to 15-35 degrees, and those skilled in the art can select the included angle between the edge end of the first strip-shaped hole 11 and the radial line of the first annular burner cap 1 according to actual needs.

[0044] For a swirling burner cap assembly of the present invention, please refer to Figures 1 to 4 With reference to the relevant drawings, on the basis of the foregoing technical solutions, it may also be: When the number of the first strip-shaped holes 11 is 28, the thermal efficiency of the swirling flame is the best. Of course, the number of the first strip-shaped holes 11 is not limited to 28, and those skilled in the art can select the number of the first strip-shaped holes 11 according to actual needs.

[0045] The present invention also provides a burner, which includes a burner head, a gas distribution plate 3, an inner ring burner cap 4, and the above-mentioned swirling burner cap assembly. Among them, the gas distribution plate 3 is installed on the burner head. For example, the gas distribution plate 3 includes an inner ring gas mixing cavity part 31 and an outer ring gas mixing cavity part 32. The inner ring burner cap 4 is installed on the inner ring gas mixing cavity part 31, the first annular burner cap 1 is installed on the outer ring gas mixing cavity part 32, and the second annular burner cap 2 is installed on the first annular burner cap 1.

[0046] For a burner of the present invention, since it includes the above-mentioned swirling burner cap assembly, the secondary air replenishment of the flame near the central part is improved, the combustion is made more sufficient, thereby improving the thermal efficiency of the swirling burner, reducing the emission of carbon monoxide, and saving energy.

[0047] The present invention also provides a gas stove, which includes the above-mentioned burner. For a gas stove of the present invention, since it includes the above-mentioned burner, the effects of high combustion efficiency and energy saving are achieved, thereby improving the user experience.

[0048] The above only illustrates several specific embodiments of the present invention, but it cannot be used as the protection scope of the present invention. Any equivalent changes, modifications, equal-proportion enlargements or reductions made in accordance with the design spirit of the present invention shall be considered to fall within the protection scope of the present invention.

Claims

1. A swirling burner cap assembly, characterized in that, it includes: A first annular burner cap (1) is provided with first strip-shaped holes (11) arranged in a ring and extending in the ring width direction. Between the edge part of the first annular burner cap (1) and two adjacent first strip-shaped holes (11), there are provided a first strip-shaped boss (12) and a second strip-shaped boss (13). The extending directions of the first strip-shaped boss (12) and the second strip-shaped boss (13) are the same as the length direction of the first strip-shaped hole (11). The first strip-shaped boss (12) and the second strip-shaped boss (13) on both sides of the first strip-shaped hole (11) jointly enclose a combustion chamber (14). A second annular burner cap (2) is installed on the first annular burner cap (1), and the lower end surface of the second annular burner cap (2) abuts against the upper end surfaces of the first strip-shaped boss (12) and the second strip-shaped boss (13). The second annular burner cap (2) is correspondingly provided with second strip-shaped holes (21) arranged in a ring. The second annular burner cap (2), the first strip-shaped boss (12) and the second strip-shaped boss (13) jointly enclose an air chamber (15) to supplement secondary air to the flame near the central part. The gas at the edge part flows upward out to the outside through the first strip-shaped hole (11), the combustion chamber (14) and the second strip-shaped hole (21), and the gas near the center flows upward out to the outside through the first strip-shaped hole (11) and the second strip-shaped hole (21).

2. The swirling burner cap assembly according to claim 1, characterized in that, both the first annular burner cap (1) and the second annular burner cap (2) are umbrella-shaped rings.

3. The swirling burner cap assembly according to claim 2, characterized in that, the lengths of the first strip-shaped boss (12) and the second strip-shaped boss (13) are 20-70% of the length of the first strip-shaped hole (11).

4. The swirling burner cap assembly according to claim 3, characterized in that, the included angle between the edge end of the first strip-shaped hole (11) and the radial line of the first annular burner cap (1) is 15-35 degrees.

5. The swirling burner cap assembly according to claim 4, characterized in that, the number of the first strip-shaped holes (11) is twenty-eight.

6. The swirling burner cap assembly according to claim 5, characterized in that, the first annular burner cap (1) includes a first inner ring side wall (16), a first annular top wall (17) fixedly connected to the first inner ring side wall (16), and an outer ring side wall (18) fixedly connected to the first annular top wall (17). Wherein, a bent part that bends 130 degrees towards the edge direction is provided in the middle of the first inner ring side wall (16), the included angle between the first annular top wall (17) and the first inner ring side wall (16) is 120 degrees, and the included angle between the first annular top wall (17) and the outer ring side wall (18) is 112 degrees.

7. The swirling burner cap assembly according to claim 6, characterized in that, The second annular burner cap (2) includes a second inner ring side wall (22) and a second annular top wall (23), and the angle between the second annular top wall (23) and the second inner ring side wall (22) is correspondingly 120 degrees.

8. A burner, characterized in that it includes the swirling burner cap assembly according to any one of claims 1-7.

9. The burner according to claim 8, characterized in that it further includes an air distribution plate (3) and an inner ring burner cap (4), wherein the air distribution plate (3) includes an inner ring air mixing cavity part (31) and an outer ring air mixing cavity part (32), the inner ring burner cap (4) is installed on the inner ring air mixing cavity part (31), the first annular burner cap (1) is installed on the outer ring air mixing cavity part (32), and the second annular burner cap (2) is installed on the first annular burner cap (1).

10. A gas stove, characterized in that it includes the burner according to any one of claims 8 and 9.

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