CN220506708U

CN220506708U - Burner

Info

Publication number: CN220506708U
Application number: CN202321794161.3U
Authority: CN
Inventors: 张波; 俞瑜
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-02-20
Anticipated expiration: 2033-07-07

Abstract

A burner, comprising: a base (1) having an inner annular wall (11), an outer annular wall (12) and a bottom wall (13) between which an annular chamber (10) with an upper portion open is formed; one of the inner annular wall (11) and the outer annular wall (12) is provided with gas holes (110) at intervals along the circumferential direction so as to enable gas to enter the annular chamber (10) through the gas holes (110); the other one of the inner annular wall (11) and the outer annular wall (12) is provided with air inlet holes (120) at intervals along the circumferential direction so that air can enter the annular chamber (10) through the air inlet holes (120); the discharge end of the ignition needle (2) is arranged in the annular chamber (10); the cover body (3) is arranged on the annular chamber (10), and the cover body (3) is provided with an air outlet hole (30) penetrating through the wall thickness of the cover body. Compared with the prior art, the burner can prevent flame from overflowing outwards and can heat normally.

Description

Burner

Technical Field

The utility model belongs to the technical field of household stoves, and particularly relates to a combustor.

Background

The existing stove burner generally adopts open fire to directly heat the cooker, and specifically has the structure disclosed in China patent application No. 202021773687.X, namely a burner for a gas stove (issued publication No. CN 213453624U), china patent application No. 202221698066.9, namely a burner for a gas stove (issued publication No. CN 218721485U) and the like.

When in use, flame overflows outwards from the fire hole, which is easy to cause safety risks such as burn; and meanwhile, the temperature of the part of the pan bottom, which is in direct contact with the flame, is higher than that of the part which is not in contact with the flame, so that the pan bottom is heated unevenly.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a burner which can prevent flame from overflowing outwards and can heat normally at the same time.

The second technical problem to be solved by the present utility model is to provide a burner, so as to avoid the excessive temperature thereof.

The third technical problem to be solved by the utility model is to provide a burner capable of improving combustion efficiency.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a burner, comprising:

the base is provided with an inner annular wall extending upwards, an outer annular wall located at the periphery of the inner annular wall along the circumferential direction and a bottom wall connected with the inner annular wall and the outer annular wall, and an annular chamber with an upper opening is formed among the bottom wall, the inner annular wall and the outer annular wall;

an ignition needle;

the cover body is covered on the annular chamber;

the method is characterized in that:

one of the inner annular wall and the outer annular wall is provided with gas holes at intervals along the circumferential direction so as to enable gas to enter the annular cavity through the gas holes; the other one of the inner annular wall and the outer annular wall is provided with air inlet holes at intervals along the circumferential direction so that air can enter the annular cavity through the air inlet holes;

the discharge end of the ignition needle is arranged in the annular cavity;

the cover body is provided with an air outlet hole penetrating through the wall thickness of the cover body.

After the ignition needle discharges, the fuel gas and air can perform combustion reaction in the annular cavity, and the generated high-temperature flue gas flows upwards and rushes to the bottom of the pot through the air outlet hole of the cover body, so that the bottom of the pot is heated, flame exists in the annular cavity in the whole process, and the flame can be prevented from overflowing outwards. Meanwhile, as the discharge end of the ignition needle is arranged in the annular cavity and the cover body is arranged above the discharge end, the ignition can be prevented from being influenced by external factors such as overflow liquid and the like.

Preferably, the fuel holes are arranged at intervals in the circumferential direction in one group, at least two groups and are arranged at intervals in the up-down direction; the air inlet holes are arranged at intervals in the circumferential direction and are at least two groups and are arranged at intervals in the up-down direction.

Further, the interval distance between the upper and lower adjacent two groups of gas holes is smaller than the interval distance between the upper and lower adjacent two groups of air inlet holes.

Further, the interval distance between two adjacent gas holes in the circumferential direction is smaller than the interval distance between two adjacent air inlet holes in the circumferential direction.

Preferably, the gas holes are staggered with the air inlet holes. Thus, the mutual interference of the fuel gas and the air can be avoided.

In order to further avoid the flame from spilling out, it is preferable that the outer annular wall is provided with the air inlet holes near the upper edge of the outer annular wall and above the upper edge of the inner annular wall. The area where the air inlet hole is positioned is not provided with a gas hole, and the air inlet hole can provide enough over-fire air to enable the gas to be fully combusted, so that no open fire is ensured to upwards flow out through the gas outlet hole on the cover body.

Further, the inner annular wall is provided with an upper annular part and a lower annular part, and the upper annular part and the lower annular part are both provided with the fuel gas holes;

the position of the upper ring part of the outer ring wall corresponding to the inner ring wall is an air inlet-free area without air inlet holes;

the position of the lower ring part of the outer ring wall corresponding to the inner ring wall is an air inlet area provided with the air inlet holes.

Thus, the part corresponding to the air inlet area in the annular cavity is a primary combustion area, the part corresponding to the air inlet-free area is a reburning area, and the part corresponding to the upper part of the inner annular wall is a burnout area, wherein the primary combustion area is a main combustion area and is in oxidizing or weak reducing atmosphere; in the reburning zone, the fuel gas is made to be in a reducing atmosphere after entering, hydrocarbon radicals are generated under the high temperature and the reducing atmosphere, and the radicals react with NOx generated in the primary combustion zone to mainly generate N ₂ . And feeding secondary air above the reburning zone to burn the fuel gas completely. In the whole process, a small amount of NO is generated, but the emission amount of NOx is greatly reduced.

Preferably, the air inlet area has at least three groups of air inlets which are arranged at intervals up and down.

Preferably, the air inlet Kong Bikai is provided at the discharge end of the ignition needle. Thereby ensuring the ignition success rate.

In each of the above solutions, preferably, the air supply device further includes an air blowing device for providing an air blowing source, and an air outlet end of the air blowing device is communicated with the air inlet hole.

Preferably, the inner annular wall of the base encloses an inner annular chamber, the upper part of the inner annular chamber is closed by a top wall, and the lower part of the inner annular chamber is opened for fuel gas input. In order to further solve the second and third technical problems, preferably, the base further has a ring wall circumferentially located at the periphery of the outer ring wall, an outer ring cavity is formed between the ring wall and the outer ring wall, and a blowing hole communicating with the air outlet end of the blower is formed in the ring wall. The blast air flow in the outer ring cavity is combined with the periphery of the annular cavity, so that the temperature of the outer side wall of the burner can be reduced, the high-temperature annular cavity can preheat the blast air flow in the outer ring cavity, the temperature of the blast air flow entering the annular cavity is improved, and the combustion efficiency is improved.

Preferably, the upper edge of the outer annular wall is connected with the upper edge of the annular wall through an annular wall, and air outlet holes are formed in the annular wall at intervals along the circumferential direction. Thus, the air flow output upwards from the air outlet hole can assist the high-temperature flue gas generated by combustion to flow upwards.

Preferably, the peripheral edge of the cover engages the upper edge of the collar wall.

Further, the cover body is in a shape of a screen plate uniformly provided with the air outlet holes.

Preferably, the outer side edge of the bottom wall extends outwards transversely and is connected with the ring wall, an air inlet cavity for inputting fuel gas is arranged at a position below the bottom wall of the base, and the air inlet cavity is communicated with the inner ring cavity through an opening. Therefore, the high-temperature annular chamber can preheat the fuel gas in the gas inlet chamber, and the temperature of the fuel gas in the annular chamber is improved, so that the combustion efficiency is improved.

Compared with the prior art, the utility model has the advantages that: through being equipped with the gas vent at one of them along circumference interval in interior rampart, outer rampart, another one is equipped with the fresh air inlet along circumference interval, the ring chamber is located to the discharge end of ignition needle, the lid is established on the ring chamber, and be equipped with the venthole that runs through self wall thickness on the lid, so, after the ignition needle discharges, gas and air can carry out combustion reaction in the ring chamber, the high temperature flue gas that produces upwards flows and wash to the bottom of a boiler through the venthole of lid, heat the bottom of a boiler, whole in-process flame exists in the ring chamber, can prevent that the flame from spilling over outwards. Meanwhile, as the discharge end of the ignition needle is arranged in the annular cavity and the cover body is arranged above the discharge end, the ignition can be prevented from being influenced by external factors such as overflow liquid and the like.

Drawings

FIG. 1 is a schematic view of a burner according to an embodiment of the present utility model when mounted on a panel;

FIG. 2 is a longitudinal cross-sectional view of FIG. 1;

FIG. 3 is another longitudinal cross-sectional view of FIG. 1;

FIG. 4 is a transverse cross-sectional view of a burner of an embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 4, a preferred embodiment of a burner according to the present utility model includes a base 1, an ignition needle 2, a cover 3, and a blower 4.

The base 1 has an inner annular wall 11 extending upward, an outer annular wall 12 located circumferentially around the inner annular wall 11, a ring wall 14 located circumferentially around the outer annular wall 12, and a bottom wall 13 connecting the inner annular wall 11, the outer annular wall 12, and the ring wall 14, the inner annular wall 11 encloses an inner annular chamber 111, an upper portion of the inner annular chamber 111 is closed by a top wall, and a lower portion of the inner annular chamber 111 is opened for gas input. An annular chamber 10 with an upper opening is formed between the bottom wall 13, the inner annular wall 11 and the outer annular wall 12. The annular wall 14, the outer annular wall 12 and the bottom wall 13 together form an outer annular chamber 140. The upper edge of the outer annular wall 12 is joined to the upper edge of the annular wall 14 by an annular wall 15, the annular wall 15 being located above the top wall of the inner annular chamber 111, and the annular wall 15 being provided with air outlet holes 150 circumferentially spaced apart. Meanwhile, the base 1 has an air intake chamber 16 for gas input at a position below the bottom wall 13, and the air intake chamber 16 communicates with the inner ring chamber 111 through an opening.

In this embodiment, the inner annular wall 11 is circumferentially provided with gas holes 110 at intervals, so that gas can enter the annular chamber 10 through the gas holes 110; and the fuel holes 110 are arranged at intervals in the circumferential direction in one group, at least two groups, and are arranged at intervals in the up-down direction. Meanwhile, the inner annular wall 11 has an upper annular portion and a lower annular portion, both of which are provided with the above-described gas holes 110.

The annular wall 14 is provided with a blowing hole 141 communicating with the air outlet end of the blower 4, and the blowing hole 141 is located at the lower part of the annular wall 14, so that the blowing air source can enter the outer annular chamber 140.

The outer annular wall 12 is provided with air inlet holes 120 at intervals along the circumferential direction, so that air can enter the annular chamber 10 through the air inlet holes 120; the air inlets 120 are arranged at intervals in the circumferential direction in one group, at least two groups, and are arranged at intervals in the up-down direction. Specifically, the position of the upper ring portion of the outer ring wall 12 corresponding to the inner ring wall 11 is an air inlet-free region 121 without air inlet holes. The position of the lower ring part of the outer ring wall 12 corresponding to the inner ring wall 11 is provided with an air inlet area 122 provided with the air inlet holes 120, and the air inlet holes 120 of the air inlet area 122 are arranged in three groups and are vertically spaced. A circle of air inlet holes 120 are arranged on the outer annular wall 12 near the upper edge of the outer annular wall, and are positioned above the upper edge of the inner annular wall 11.

Meanwhile, in the present embodiment, the interval distance between the two adjacent upper and lower groups of gas holes 110 is smaller than the interval distance between the two adjacent upper and lower groups of gas inlet holes 120. The interval distance between two adjacent gas holes 110 in the circumferential direction is smaller than the interval distance between two adjacent gas inlet holes 120 in the circumferential direction. And the gas holes 110 are staggered with the air inlet holes 120.

The cover 3 is formed in a net plate shape with air outlet holes 30 uniformly distributed, and is covered on the annular chamber 10 at a position above the annular wall 15, and the periphery of the cover 3 is jointed with the upper edge of the annular wall 14.

The discharge end of the ignition needle 2 is disposed in the annular chamber 10 at a position corresponding to the lower annular portion of the inner annular wall 11, and avoids the air inlet 120.

So, after the ignition needle 2 discharges, the gas and air can carry out combustion reaction in the annular chamber 10, the generated high-temperature flue gas flows upwards and rushes to the bottom of the pot through the air outlet hole 30 of the cover body 3, the bottom of the pot is heated, flame exists in the annular chamber 10 in the whole process, and the flame can be prevented from overflowing outwards.

The burner of this embodiment can be inserted into the mounting hole 50 of the panel 5, and the ring wall 14 of the burner is opposite to the wall of the mounting hole 50, and the temperature of the ring wall 14 is low due to the air blast in the ring wall 14, so that the temperature of the panel 5 can be reduced, and the overhigh temperature of the panel 5 can be avoided.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims

1. A burner, comprising:

a base (1) having an upwardly extending inner annular wall (11), an outer annular wall (12) circumferentially located at the periphery of the inner annular wall (11), and a bottom wall (13) joining the inner annular wall (11) and the outer annular wall (12), wherein an annular chamber (10) having an upper opening is formed between the bottom wall (13), the inner annular wall (11) and the outer annular wall (12);

an ignition needle (2);

the cover body (3) is covered on the annular chamber (10);

the method is characterized in that:

one of the inner annular wall (11) and the outer annular wall (12) is provided with gas holes (110) at intervals along the circumferential direction so that gas can enter the annular chamber (10) through the gas holes (110); the other one of the inner annular wall (11) and the outer annular wall (12) is provided with air inlet holes (120) at intervals along the circumferential direction so that air can enter the annular chamber (10) through the air inlet holes (120);

the discharge end of the ignition needle (2) is arranged in the annular chamber (10);

the cover body (3) is provided with an air outlet hole (30) penetrating through the wall thickness of the cover body.

2. The burner of claim 1, wherein: at least two groups of gas holes (110) are arranged at intervals along the up-down direction; the air inlets (120) are arranged at intervals in the circumferential direction in one group, at least two groups and are arranged at intervals in the up-down direction.

3. The burner of claim 2, wherein: the interval distance between the upper and lower adjacent two groups of gas holes (110) is smaller than the interval distance between the upper and lower adjacent two groups of air inlet holes (120).

4. The burner of claim 2, wherein: the distance between two adjacent gas holes (110) in the circumferential direction is smaller than the distance between two adjacent gas inlet holes (120) in the circumferential direction.

5. The burner of claim 2, wherein: the gas holes (110) and the air inlet holes (120) are staggered.

6. The burner of claim 2, wherein: the outer annular wall (12) is provided with the air inlet hole (120) at a position close to the upper edge of the outer annular wall, and is positioned above the upper edge of the inner annular wall (11).

7. The burner of claim 6, wherein: the inner annular wall (11) is provided with an upper annular part and a lower annular part, and the upper annular part and the lower annular part are both provided with the fuel gas holes (110);

the position of the upper ring part of the outer ring wall (12) corresponding to the inner ring wall (11) is an air inlet-free area (121) without air inlet holes;

the position of the lower ring part of the outer ring wall (12) corresponding to the inner ring wall (11) is an air inlet area (122) provided with the air inlet holes (120).

8. The burner of claim 7, wherein: at least three groups of air inlets (120) of the air inlet area (122) are arranged at intervals up and down.

9. The burner of claim 1, wherein: the air inlet hole (120) is arranged avoiding the discharge end of the ignition needle (2).

10. The burner according to any one of claims 1 to 9, wherein: the air-blowing device (4) is used for providing an air-blowing source, and the air outlet end of the air-blowing device is communicated with the air inlet hole (120).

11. The burner of claim 10, wherein: the inner annular wall (11) of the base (1) encloses an inner annular chamber (111), the upper part of the inner annular chamber (111) is closed through the top wall, and the lower part of the inner annular chamber (111) is opened for inputting fuel gas.

12. The burner of claim 11, wherein: the base (1) is also provided with a ring wall (14) which is positioned at the periphery of the outer ring wall (12) along the circumferential direction, an outer ring cavity (140) is formed between the ring wall (14) and the outer ring wall (12), and the ring wall (14) is provided with a blast hole (141) communicated with the air outlet end of the blast device (4).

13. The burner of claim 12, wherein: the upper edge of the outer annular wall (12) is combined with the upper edge of the ring wall (14) through an annular wall (15), and air outlet holes (150) are formed in the annular wall (15) at intervals along the circumferential direction.

14. The burner of claim 12, wherein: the peripheral edge of the cover body (3) is connected with the upper edge of the ring wall (14).

15. The burner of claim 14, wherein: the cover body (3) is in a shape of a net plate uniformly provided with the air outlet holes (30).

16. The burner of claim 12, wherein: the outer side edge of the bottom wall (13) extends outwards transversely and is connected with the ring wall (14), an air inlet cavity (16) for inputting fuel gas is arranged at a position below the bottom wall (13) of the base (1), and the air inlet cavity (16) is communicated with the inner ring cavity (111) through an opening.