CN110762530B

CN110762530B - Burner with a burner head

Info

Publication number: CN110762530B
Application number: CN201911043196.1A
Authority: CN
Inventors: 苏慧玲; 郑军妹; 俞瑜; 严力峰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2021-03-26
Anticipated expiration: 2039-10-30
Also published as: CN110762530A

Abstract

The invention discloses a combustor, which comprises a middle gas mixing chamber, a middle ring fire cover, an inner gas mixing chamber and an inner ring fire cover, wherein the middle ring fire cover is covered on the middle gas mixing chamber; the inner gas mixing chamber and the middle ring fire cover are relatively fixed, and the inner ring fire cover and the middle gas mixing chamber are relatively fixed; the burner also comprises an air distribution plate, the air distribution plate is arranged between the middle air mixing chamber and the middle fire cover, a first communicating hole is formed on the air distribution plate, and the first communicating hole is communicated with the middle air mixing chamber; the middle ring fire cover is provided with a middle air inlet facing the air distribution plate; the middle ring fire cover and the inner air mixing chamber can rotate around the axis of the middle ring fire cover, so that the communication area of the middle air inlet and the first communication hole and the communication area of the inner air mixing chamber and the inner ring fire cover can be adjusted. This combustor only needs to rotate well fire lid, can realize interior ring fire, well ring fire the while regulation, and can design different regulation modes according to the design demand of difference, adjusts simple structure, and convenient in design can realize different radial position's firepower in a flexible way and adjust.

Description

Burner with a burner head

Technical Field

The present invention relates to a burner.

Background

The burner is usually provided with a plurality of annular fire covers with different radiuses, such as an inner ring fire cover, a middle ring fire cover and an outer ring fire cover. Through the firepower regulation of different annular fire lids, can realize the best firepower combination of cooking utensils, adapt to the demand of different firepower culinary arts, especially can adapt to chinese style culinary art to the extremely high requirement of firepower. The combination that the firepower of radial different position required changes very much, and the firepower of the radial different position of current is adjusted the mode and is adjusted through the valve body usually, but the structure that the valve body was adjusted is complicated, the mode of regulation is single, can not satisfy the firepower cooking demand of high requirement far away.

Disclosure of Invention

The invention aims to overcome the defects of complex structure and single adjusting mode of firepower adjusting at different radial positions of a combustor in the prior art, and provides the combustor.

The invention solves the technical problems through the following technical scheme:

a burner comprises a middle gas mixing chamber, a middle ring fire cover, an inner gas mixing chamber and an inner ring fire cover, wherein the middle ring fire cover covers the middle gas mixing chamber; the inner gas mixing chamber and the middle ring fire cover are relatively fixed, and the inner ring fire cover and the middle gas mixing chamber are relatively fixed; the combustor also comprises a gas distribution plate, the gas distribution plate is arranged between the middle gas mixing chamber and the middle ring fire cover, a first communicating hole is formed in the gas distribution plate, and the first communicating hole is communicated with the middle gas mixing chamber; the middle fire cover is provided with a middle air inlet facing the air distribution plate; the middle ring fire cover and the inner air mixing chamber can rotate around the axis of the middle ring fire cover, so that the communication area of the middle air inlet and the first communication hole and the communication area of the inner air mixing chamber and the inner ring fire cover are adjusted.

Preferably, when the communication area between the inner air mixing chamber and the inner ring fire cover is the largest, the communication area between the middle air inlet and the first communication hole is the largest; when the communication area of the inner air mixing chamber and the inner ring fire cover is the minimum, the middle air inlet is completely isolated from the first communication hole.

Preferably, when the communication area between the inner air mixing chamber and the inner ring fire cover is the largest, the middle air inlet is completely isolated from the first communication hole; when the communication area of the inner air mixing chamber and the inner ring fire cover is the minimum, the communication area of the middle air inlet and the first communication hole is the maximum.

Preferably, the middle air inlet and the first communication hole are both arc-shaped, the middle air inlet, the first communication hole and the middle fire cover are coaxially arranged, and the middle air inlet and the first communication hole are identical in shape.

Preferably, the inner gas mixing chamber is provided with an inner gas outlet facing the inner ring fire cover, the inner ring fire cover is provided with a fire outlet area, and the fire outlet area is fully distributed with a plurality of first fire holes; the inner gas mixing chamber and the middle ring fire cover can adjust the number of the first fire holes communicated with the inner gas outlet in the process of rotating around the axis of the middle ring fire cover.

Preferably, the fire outlet area of the inner ring fire cover comprises a fire outlet center positioned in the center and fire outlet side wings formed on the edge of the fire outlet center, and the inner air outlet of the inner air mixing chamber comprises an outlet center positioned in the center and outlet side wings formed on the edge of the outlet center; in the rotation process of the inner air mixing chamber, the fire outlet center is always communicated with the outlet center, and the overlapping area of the fire outlet side wing and the outlet side wing is adjusted according to the rotation of the inner air mixing chamber.

Preferably, the fire outlet side wing and the outlet side wing are both arc-shaped, the fire outlet side wing and the outlet side wing are coaxially arranged with the middle ring fire cover, and the fire outlet side wing and the outlet side wing are in the same shape.

Preferably, the fire outlet wing, the middle air inlet and the first connecting hole are all arc-shaped and are coaxially arranged with the middle ring fire cover, the central angles of the fire outlet wing, the middle air inlet and the first connecting hole are the same in degree, the central angle of the fire outlet wing and the central angle of the first connecting hole do not coincide along the axial direction of the middle ring fire cover, and the central angle of the outlet wing and the central angle of the middle air inlet coincide along the axial direction of the middle ring fire cover.

Preferably, the fire outlet wing, the middle air inlet and the first communication hole are all arc-shaped and are coaxially arranged with the middle ring fire cover, the central angles of the fire outlet wing, the middle air inlet and the first communication hole are the same in degree, the relative angle between the central angle of the fire outlet wing and the central angle of the first communication hole around the circumference of the middle ring fire cover is the same, and the relative angle between the central angle of the fire outlet wing and the central angle of the middle air inlet around the circumference of the middle ring fire cover is the same.

Preferably, the burner further comprises an air supply chamber, the air supply chamber is communicated with the outside air, a second communication hole communicated with the air supply chamber is formed in the air distribution plate, and the second communication hole is formed between the inner air mixing chamber and the middle ring fire cover; the inner gas mixing chamber is connected with the middle ring fire cover through a connecting plate, and a plurality of gas supplementing ports are formed in the connecting plate; and in the rotation process of the middle ring fire cover, the communication area of the air supplementing port and the second communication hole is adjusted.

Preferably, the air supplementing port is a first air supplementing port, and the first air supplementing port penetrates through the connecting plate along the axial direction of the middle ring fire cover.

Preferably, the inner ring fire cover is provided with a fire outlet area, and a plurality of first fire holes are distributed in the fire outlet area; the fire outlet area of the inner ring fire cover comprises a fire outlet center positioned in the center and fire outlet side wings formed on the edge of the fire outlet center, and the outlet of the inner air mixing chamber comprises an outlet center positioned in the center and outlet side wings formed on the edge of the outlet center; the fire outlet center is always communicated with the outlet center, and the overlapping area of the fire outlet side wing and the outlet side wing is adjusted according to the rotation of the inner gas mixing chamber; the outlet wing and the fan-shaped area formed by the axis of the middle fire cover, and the fan-shaped area formed by the first air supplement opening and the axis of the middle fire cover are coincided with each other along the axial projection of the middle fire cover.

Preferably, the air supplement port is a second air supplement port, and the second air supplement port is arranged facing the inner circumferential surface of the middle ring fire cover.

Preferably, the air supplementing port is also a first air supplementing port, the first air supplementing port penetrates through the connecting plate along the axial direction of the middle ring fire cover, and the first air supplementing port and the second air supplementing port are arranged at intervals around the circumference of the middle ring fire cover.

Preferably, the outer circumferential surface and the inner circumferential surface of the middle fire cover are provided with a plurality of second fire holes.

Preferably, the burner further comprises:

a base;

the rotating shaft is coaxially fixed with the middle ring fire cover, the rotating shaft is installed on the base, and the rotating shaft can drive the middle ring fire cover to rotate around the axis.

Preferably, the base comprises a support cylinder, the rotating shaft is coaxially installed in the support cylinder, and the support cylinder is provided with a rotating groove arranged around the circumference of the support cylinder;

the rotating shaft and the middle ring fire cover are connected through a connecting section, and the connecting section is positioned in the rotating groove; when the rotating shaft drives the middle fire ring cover to rotate around the axis, the connecting section slides in the rotating groove.

The positive progress effects of the invention are as follows:

this combustor only needs to rotate well fire lid, can realize interior ring fire, well ring fire the while regulation, and can design different regulation modes according to the design demand of difference, for current valve regulation mode, adjusts simple structure, and convenient in design can realize different radial position's firepower in a flexible way and adjust.

Drawings

Fig. 1 is a schematic structural diagram of a burner according to a first embodiment of the present invention.

Fig. 2 is a sectional view of the burner shown in fig. 1.

Fig. 3 is a schematic structural view of an inner ring cap of the burner shown in fig. 1.

FIG. 4 is a schematic structural diagram of an outer ring fire cover, an intermediate ring fire cover, an inner gas mixing chamber and related connecting components of the burner shown in FIG. 1.

FIG. 5 is another perspective view of the outer ring fire cover, the middle ring fire cover, the inner air mixing chamber and the associated connecting components shown in FIG. 4.

Fig. 6 is a bottom view of the outer fire cover, the middle fire cover, the inner air mixing chamber and the related connecting parts shown in fig. 4.

Fig. 7 is a sectional view taken along the line a-a of the outer ring fire cover, the middle ring fire cover, the inner air mixing chamber and the related connecting parts shown in fig. 6.

Fig. 8 is a B-B sectional view of the outer ring fire cover, the middle ring fire cover, the inner air mixing chamber and the related connecting parts shown in fig. 6.

Fig. 9 is a schematic structural view of a gas distribution plate of the burner shown in fig. 1.

FIG. 10 is a schematic diagram of the relative positions of the inner ring fire cover, the inner air mixing chamber, the middle ring fire cover and the air distribution plate of the burner shown in FIG. 1.

FIG. 11 is a schematic view of another angle of relative positions of the inner ring fire cover, the inner air mixing chamber, the middle ring fire cover and the air distribution plate of the burner shown in FIG. 10.

FIG. 12 is a schematic view of the burner of FIG. 1 with the middle fire cover and base assembled.

FIG. 13 is a schematic structural diagram of an outer ring fire cover, an intermediate ring fire cover, an inner air mixing chamber and related connecting components of a second embodiment of the burner of the present invention.

FIG. 14 is another angle schematic view of the outer ring fire cover, the middle ring fire cover, the inner air mixing chamber and the related connecting components shown in FIG. 13.

FIG. 15 is a schematic view of the relative positions of the inner ring fire cover, the inner air mixing chamber, the middle ring fire cover and the air distribution plate of the burner shown in FIG. 13.

FIG. 16 is a schematic view of another angle of relative positions of the inner ring fire cover, the inner air mixing chamber, the middle ring fire cover and the air distribution plate of the burner shown in FIG. 15.

Description of the reference numerals

A middle gas mixing chamber 1; the middle fire cover 2, the middle air inlet 21 and the second fire hole 22; an inner air mixing chamber 3, an inner air outlet 31, an outlet center 311, outlet side wings 312; the inner ring fire cover 4, the fire outlet area 41, the first fire hole 411, the fire outlet center 412 and the fire outlet side wing 413; the gas distribution plate 5, the first communication hole 51, the second communication hole 52; an air supplement chamber 6; the connecting plate 7, the air supplement port 71, the first air supplement port 711 and the second air supplement port 712; a base 8, a support cylinder 81, a rotation groove 82; a rotating shaft 9; a connecting section 10; an outer ring fire cover 20.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1 to 2, the burner of the present embodiment includes a middle gas mixing chamber 1, a middle ring fire cover 2 covering the middle gas mixing chamber 1, an inner gas mixing chamber 3, and an inner ring fire cover 4 covering the inner gas mixing chamber 3, wherein the inner gas mixing chamber 3 and the middle ring fire cover 2 are fixed relatively, and the inner ring fire cover 4 and the middle gas mixing chamber 1 are fixed relatively.

The burner also comprises a gas distribution plate 5, the gas distribution plate 5 is arranged between the middle gas mixing chamber 1 and the middle fire cover 2, a first communicating hole 51 is formed on the gas distribution plate 5, and the first communicating hole 51 is communicated with the middle gas mixing chamber 1; the middle ring fire cover 2 is provided with a middle air inlet 21 facing the air distribution plate 5; the middle ring fire cover 2 and the inner air mixing chamber 3 can rotate around the axis of the middle ring fire cover 2, so that the communication area of the middle air inlet 21 and the first communication hole 51 and the communication area of the inner air mixing chamber 3 and the inner ring fire cover 4 can be adjusted.

The inner gas mixing chamber 3 supplies gas to the inner ring fire cover 4, and the size of the flame of the inner ring fire cover 4 is related to the communication area of the inner gas mixing chamber 3 and the inner ring fire cover 4. When the communication area of the inner gas mixing chamber 3 and the inner ring fire cover 4 is increased, the flow of the gas is increased, and the flame of the inner ring fire cover 4 is increased; when the communication area of the inner gas mixing chamber 3 and the inner ring fire cover 4 is reduced, the flow of the fuel gas is reduced, and the flame of the inner ring fire cover 4 is reduced.

The gas in the middle gas mixing chamber 1 flows into the middle fire cover 2 through the first communication hole 51 and the middle gas inlet 21. When the communication area between the middle air inlet 21 and the first communication hole 51 is increased, the flow rate of the gas is increased, and the flame of the middle ring flame cover 2 is increased; when the communication area between the middle air inlet 21 and the first communication hole 51 is reduced, the flow rate of the fuel gas is reduced, and the flame of the middle ring flame cover 2 is reduced; when the middle air inlet 21 is not communicated with the first communication hole 51 completely, the flame of the middle ring fire cover 2 is extinguished.

Through the design of the relative positions of the first communication hole 51, the middle air inlet 21, the inner air mixing chamber 3 and the inner ring fire cover 4, the simultaneous adjustment of the inner ring fire and the middle ring fire can be realized only by rotating the middle ring fire cover 2. And different adjusting modes can be designed according to different design requirements. For example, in the embodiment, when the communication area between the inner air mixing chamber 3 and the inner fire cover 4 is the largest, the middle air inlet 21 and the first communication hole 51 are completely isolated; when the communication area of the inner air mixing chamber 3 and the inner ring fire cover 4 is the smallest, the communication area of the middle air inlet 21 and the first communication hole 51 is the largest. Thus, in the process of rotating the middle ring fire cover 2, the firepower of the middle ring fire and the inner ring fire are developed in opposite directions, when the inner ring fire is maximum, the middle ring fire is extinguished, and when the inner ring fire is minimum, the middle ring fire is maximum.

As shown in fig. 4 to 9, one specific structure of the middle air inlet 21 and the first communication hole 51 is as follows: the middle air inlet 21 and the first communication hole 51 are both arc-shaped, the middle air inlet 21 and the first communication hole 51 are coaxially arranged with the middle fire cover 2, and the middle air inlet 21 and the first communication hole 51 are identical in shape. When the middle fire cover 2 rotates, the communication area of the middle air inlet 21 and the first communication hole 51 is in fixed proportion to the rotation angle of the middle fire cover 2. The communication area of the middle air inlet 21 and the first communication hole 51 can be adjusted by adjusting the rotation angle of the middle fire cover 2, namely, the gas flow of the middle fire cover 2 can be adjusted.

As shown in fig. 3, 10 to 11, one specific structure of the inner air mixing chamber 3 and the inner ring fire cover 4 is as follows: the inner gas mixing chamber 3 is provided with an inner gas outlet 31 facing the inner ring fire cover 4, the inner ring fire cover 4 is provided with a fire outlet area 41, and the fire outlet area 41 is fully distributed with a plurality of first fire holes 411; in the process that the inner air mixing chamber 3 and the middle fire cover 2 rotate around the axis of the middle fire cover 2, the number of the first fire holes 411 communicated with the inner air outlet 31 can be adjusted.

Specifically, the fire outlet area 41 of the inner ring fire cover 4 includes a fire outlet center 412 at the center and fire outlet flaps 413 formed at the edge of the fire outlet center 412, and the inner air outlet 31 of the inner air mixing chamber 3 includes an outlet center 311 at the center and outlet flaps 312 formed at the edge of the outlet center 311; during the rotation of the inner air mixing chamber 3, the fire outlet center 412 is always communicated with the outlet center 311, and the overlapping area of the fire outlet edge 413 and the outlet edge 312 is adjusted according to the rotation of the inner air mixing chamber 3.

When the middle ring fire cover 2 drives the inner gas mixing chamber 3 to rotate together, the fire outlet center 412 is always communicated with the outlet center 311, namely the center of the inner ring fire is always on fire; when the fire wing 413 is communicated with the outlet wing 312, the first fire hole 411 of the fire wing 413 is also communicated with the inner air mixing chamber 3, and the fire wing 413 is also fired; when the overlapping area of the fire outlet wing 413 and the outlet wing 312 is the largest, the number of the first fire holes 411 communicated with the inner air outlet 31 is the largest, and the inner ring fire is also the largest.

One preferred shape of the fire and exit flaps 413, 312 is: the fire outlet wing 413 and the outlet wing 312 are both arc-shaped, the fire outlet wing 413 and the outlet wing 312 are coaxially arranged with the middle ring fire cover 2, and the fire outlet wing 413 and the outlet wing 312 have the same shape. When the inner air mixing chamber 3 rotates, the communication area of the fire outlet edge 413 and the outlet edge 312 is in a fixed proportion to the rotation angle of the inner air mixing chamber 3. By adjusting the rotation angle of the inner air mixing chamber 3, the communication area of the fire wing 413 and the outlet wing 312, that is, the area of the fire area 41 of the inner ring fire cover 4 can be adjusted.

When the fire outlet wing 413, the outlet wing 312, the middle air inlet 21 and the first communication hole 51 are all arc-shaped and are coaxially arranged with the middle ring fire cover 2, in order to realize the effect of "when the inner ring fire is the largest, the middle ring fire is extinguished, when the inner ring fire is the smallest, the middle ring fire is the largest", the fire outlet wing can be arranged according to the following structure: the central angles of the fire outlet wing 413, the outlet wing 312, the middle air inlet 21 and the first communication hole 51 are the same in degree, the central angle of the fire outlet wing 413 and the central angle of the first communication hole 51 do not coincide along the axial direction of the middle ring fire cover 2, and the central angle of the outlet wing 312 and the central angle of the middle air inlet 21 coincide along the axial direction of the middle ring fire cover 2.

Thus, when the middle ring fire cover 2 is rotated, the effect of "when the inner ring fire is maximum, the middle ring fire is extinguished, and when the inner ring fire is minimum, the middle ring fire is maximum" can be achieved. The above structural arrangement of the group of fire outlet edge wings 413, the outlet edge wings 312, the middle air inlet 21 and the first communication hole 51 can be designed into a plurality of groups arranged along the circumferential direction as required. For example, the burner of the present embodiment has a structure in which two sets of the centrally symmetric flame outlet edge 413, the outlet edge 312, the middle inlet 21, and the first communication hole 51 are arranged.

As shown in fig. 2, 4 to 8, in order to supplement secondary air, the burner further comprises an air supplement chamber 6, the air supplement chamber 6 is communicated with external air, a second communication hole 52 communicated with the air supplement chamber 6 is arranged on the air distribution plate 5, and the second communication hole 52 is arranged between the inner air mixing chamber 3 and the middle fire cover 2; the inner gas mixing chamber 3 is connected with the middle fire cover 2 through a connecting plate 7, and a plurality of air supplementing ports 71 are formed on the connecting plate 7; during the rotation of the middle fire cover 2, the communication area between the air supplement port 71 and the second communication hole 52 is adjusted.

The position of the air supplement port 71 is set according to the requirement of the air supplement path of the secondary air of the inner ring fire and the middle ring fire. For example, in the present embodiment, the air supply ports 71 are a first air supply port 711 and a second air supply port 712, the first air supply port 711 penetrates the connecting plate 7 in the axial direction of the middle ring fire cover 2, and the second air supply port 712 is disposed facing the inner circumferential surface of the middle ring fire cover 2. The first air supplement port 711 can supplement air to the middle ring fire cover 2 and the inner ring fire cover 4 at the same time, and the second air supplement port 712 can supplement air to the middle ring fire cover 2. The first and second air supply ports 711 and 712 may be provided in plural, and are provided at intervals around the circumference of the middle ring fire cover 2.

During the rotation of the middle ring fire cover 2, the communication area of the first air supplement port 711, the second air supplement port 712 and the second communication hole 52 is adjusted according to the rotation angle of the middle ring fire cover 2. And then, combining the positions of the middle air mixing chamber 1, the middle ring fire cover 2, the inner air mixing chamber 3 and the inner ring fire cover 4, determining a secondary air supplementing path according to the secondary air requirement of firepower of the inner ring fire and the middle ring fire, and setting the positions of the first air supplementing opening 711 and the second air supplementing opening 712.

For example, as shown in fig. 10 to 11, in the present embodiment, the sector area formed by the outlet wing 312 and the axis of the middle ring fire cover 2, and the sector area formed by the first air supplement port 711 and the axis of the middle ring fire cover 2 coincide with each other in a projection along the axial direction of the middle ring fire cover 2. Thus, the amount of the supplementary secondary air of the first supplementary air port 711 corresponds to the size of the inner ring fire. When the inner ring fire increases, the supplement amount of the secondary air becomes large; when the inner ring fire becomes small, the supplementary amount of secondary air becomes small.

Correspondingly, when the communication area between the first air supplement port 711 and the second communication hole 52 is smaller, the communication area between the second air supplement port 712 and the second communication hole 52 is increased, that is, the air supplement amount of the first air supplement port 711 is decreased, the air supplement amount of the second air supplement port 712 is increased, so that the effects of decreasing the air supplement amount of the inner ring fire and increasing the air supplement amount of the middle ring fire are achieved, and the effects are adapted to the fire power regulation requirement of 'when the inner ring fire is maximum, the middle ring fire is extinguished, and when the inner ring fire is minimum, the middle ring fire is maximum' in the embodiment.

As shown in fig. 4, a plurality of second fire holes 22 are formed on both the outer circumferential surface and the inner circumferential surface of the middle fire cover 2. When the middle fire cover 2 is not fired, the second fire holes 22 on both circumferential surfaces form a supplementary path of secondary air extending in the radial direction.

As shown in fig. 12, the burner further comprises a base 8 and a rotating shaft 9, the rotating shaft 9 is coaxially fixed with the middle fire cover 2, the rotating shaft 9 is installed on the base 8, and the rotating shaft 9 can drive the middle fire cover 2 to rotate around the axis. The rotation of the rotating shaft 9 can be driven by a common rotation driving mechanism, the middle air mixing chamber 1 is formed between the base 8 and the air distributing plate 5, and the inner air mixing chamber 3 is arranged at the end of the rotating shaft 9.

A specific mounting structure of the rotating shaft 9 and the base 8 is as follows: the base 8 comprises a supporting cylinder 81, the rotating shaft 9 is coaxially arranged in the supporting cylinder 81, and the supporting cylinder 81 is provided with a rotating groove 82 which is arranged around the circumference of the supporting cylinder 81; the rotating shaft 9 and the middle fire cover 2 are connected through a connecting section 10, and the connecting section 10 is positioned in the rotating groove 82; when the rotation shaft 9 rotates the middle fire cover 2 around the axis, the connection section 10 slides in the rotation groove 82. The rotating track of the rotating shaft 9 is limited by the rotating groove 82, and the rotating stability of the rotating shaft 9 is ensured.

As shown in fig. 1 to 2, the burner further includes an outer fire cover 20, and the outer fire cover 20 may be provided with a gas mixing chamber alone, or may share the middle gas mixing chamber 1 with the middle fire cover 2. When the outer ring fire cover 20 and the middle ring fire cover 2 share the middle gas mixing chamber 1, the change degree of the outer ring fire and the inner ring fire is the same.

Example 2

Most of the structure of this example is the same as that of example 1. The difference is that the present embodiment achieves the following effects: the inner ring fire and the middle ring fire change simultaneously; namely, when the inner ring fire is maximum, the middle ring fire is maximum; when the fire of the inner ring is minimum, the middle ring has no fire. The simultaneous variation of the inner ring fire and the middle ring fire is also an extremely wide cooking requirement.

In order to meet the fire power regulation requirement, the relative positions of the first communication hole 51, the middle air inlet 21, the inner air mixing chamber 3 and the inner ring fire cover 4 can be adjusted, as shown in fig. 13 to 16. Namely, when the communication area between the inner air mixing chamber 3 and the inner ring fire cover 4 is the largest, the communication area between the middle air inlet 21 and the first communication hole 51 is the largest; when the communication area of the inner air mixing chamber 3 and the inner ring fire cover 4 is minimum, the middle air inlet 21 and the first communication hole 51 are completely isolated.

When the fire outlet wing 413, the outlet wing 312, the middle air inlet 21 and the first communication hole 51 are all arc-shaped and are coaxially arranged with the middle ring fire cover 2, in order to realize the effect of simultaneously changing the inner ring fire and the middle ring fire, the fire outlet wing can be arranged according to the following structure: the central angles of the fire outlet wing 413, the outlet wing 312, the middle air inlet 21 and the first communication hole 51 are the same in degree, the relative angle between the central angle of the fire outlet wing 413 and the central angle of the first communication hole 51 around the circumferential direction of the middle fire cover 2 is the same, and the relative angle between the central angle of the outlet wing 312 and the central angle of the middle air inlet 21 around the circumferential direction of the middle fire cover 2 is the same.

Since the middle ring fire and the inner ring fire of the present embodiment are changed at the same time, the air supplement port 71 may be only provided as the first air supplement port 711, and the first air supplement port 711 penetrates the connecting plate 7 in the axial direction of the middle ring fire cover 2. The supplementary amount of the secondary air of the first supplementary air port 711 is changed according to the requirements of the middle ring fire and the inner ring fire. When the middle ring fire and the inner ring fire increase, the supplement amount of the secondary air becomes large; when the middle ring fire and the inner ring fire become small, the supplementary amount of the secondary air becomes small.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A burner comprises a middle gas mixing chamber, a middle ring fire cover covering the middle gas mixing chamber, an inner gas mixing chamber and an inner ring fire cover covering the inner gas mixing chamber, and is characterized in that:

the inner gas mixing chamber and the middle ring fire cover are relatively fixed, and the inner ring fire cover and the middle gas mixing chamber are relatively fixed;

the combustor also comprises a gas distribution plate, the gas distribution plate is arranged between the middle gas mixing chamber and the middle ring fire cover, a first communicating hole is formed in the gas distribution plate, and the first communicating hole is communicated with the middle gas mixing chamber; the middle fire cover is provided with a middle air inlet facing the air distribution plate;

the middle ring fire cover and the inner air mixing chamber can rotate around the axis of the middle ring fire cover, and the communication area of the middle air inlet and the first communication hole and the communication area of the inner air mixing chamber and the inner ring fire cover are adjusted.

2. The burner of claim 1, wherein: when the communication area of the inner air mixing chamber and the inner ring fire cover is the largest, the communication area of the middle air inlet and the first communication hole is the largest; when the communication area of the inner air mixing chamber and the inner ring fire cover is the minimum, the middle air inlet is completely isolated from the first communication hole.

3. The burner of claim 1, wherein: when the communication area of the inner air mixing chamber and the inner ring fire cover is the largest, the middle air inlet is completely isolated from the first communication hole; when the communication area of the inner air mixing chamber and the inner ring fire cover is the minimum, the communication area of the middle air inlet and the first communication hole is the maximum.

4. The burner of claim 1, wherein: the middle air inlet and the first communication hole are both arc-shaped, the middle air inlet, the first communication hole and the middle ring fire cover are coaxially arranged, and the middle air inlet and the first communication hole are identical in shape.

5. The burner of claim 1, wherein: the inner gas mixing chamber is provided with an inner gas outlet facing the inner ring fire cover, the inner ring fire cover is provided with a fire outlet area, and the fire outlet area is fully distributed with a plurality of first fire holes; the inner gas mixing chamber and the middle ring fire cover can adjust the number of the first fire holes communicated with the inner gas outlet in the process of rotating around the axis of the middle ring fire cover.

6. The burner of claim 5, wherein: the fire outlet area of the inner ring fire cover comprises a fire outlet center positioned in the center and fire outlet side wings formed on the edge of the fire outlet center, and the inner air outlet of the inner air mixing chamber comprises an outlet center positioned in the center and outlet side wings formed on the edge of the outlet center; in the rotation process of the inner air mixing chamber, the fire outlet center is always communicated with the outlet center, and the overlapping area of the fire outlet side wing and the outlet side wing is adjusted according to the rotation of the inner air mixing chamber.

7. The burner of claim 6, wherein: the fire outlet side wing and the outlet side wing are both arc-shaped, the fire outlet side wing and the outlet side wing are coaxially arranged with the middle ring fire cover, and the fire outlet side wing and the outlet side wing are the same in shape.

8. The burner of claim 6, wherein: go out the fire wing the export wing the well air inlet first communication hole be the arc and with the well fire lid sets up coaxially, go out the fire wing the export wing the well air inlet the number of degrees of the central angle of first communication hole is the same, go out the central angle of fire wing with the central angle of first communication hole is followed the axial of well fire lid does not coincide, the central angle of export wing with the central angle of well air inlet is followed the axial of well fire lid coincides mutually.

9. The burner of claim 6, wherein: go out the fire wing the export wing the well air inlet first through-hole be the arc and with the well fire lid is coaxial to be set up, go out the fire wing the export wing the well air inlet the number of degrees of the central angle of first through-hole is the same, go out the central angle of fire wing with the central angle of first through-hole is around the relative angle of the circumference of well fire lid, the central angle of export wing with the central angle of well air inlet is around the relative angle of the circumference of well fire lid is the same.

10. The burner of claim 1, further comprising:

the air supply chamber is communicated with external air, a second communication hole communicated with the air supply chamber is formed in the air distribution plate, and the second communication hole is formed between the inner air mixing chamber and the middle ring fire cover;

the inner gas mixing chamber is connected with the middle ring fire cover through a connecting plate, and a plurality of gas supplementing ports are formed in the connecting plate; and in the rotation process of the middle ring fire cover, the communication area of the air supplementing port and the second communication hole is adjusted.

11. The burner of claim 10, wherein: the air supplementing port comprises a first air supplementing port, and the first air supplementing port penetrates through the connecting plate along the axial direction of the middle ring fire cover.

12. The burner of claim 11, wherein: the inner ring fire cover is provided with a fire outlet area, and a plurality of first fire holes are distributed in the fire outlet area; the fire outlet area of the inner ring fire cover comprises a fire outlet center positioned in the center and fire outlet side wings formed on the edge of the fire outlet center, and the outlet of the inner air mixing chamber comprises an outlet center positioned in the center and outlet side wings formed on the edge of the outlet center; the fire outlet center is always communicated with the outlet center, and the overlapping area of the fire outlet side wing and the outlet side wing is adjusted according to the rotation of the inner gas mixing chamber; the outlet wing and the fan-shaped area formed by the axis of the middle fire cover, and the fan-shaped area formed by the first air supplement opening and the axis of the middle fire cover are coincided with each other along the axial projection of the middle fire cover.

13. The burner of claim 10, wherein: the air supplementing port comprises a second air supplementing port which is arranged facing the inner circumferential surface of the middle ring fire cover.

14. The burner of claim 13, wherein: the air supplementing port further comprises a first air supplementing port, the first air supplementing port penetrates through the connecting plate along the axial direction of the middle ring fire cover, and the first air supplementing port and the second air supplementing port are arranged at intervals around the circumferential direction of the middle ring fire cover.

15. The burner of claim 1, wherein: and a plurality of second fire holes are formed in the outer peripheral surface and the inner peripheral surface of the middle fire cover.

16. The burner of claim 1, further comprising:

a base;

17. The burner of claim 16, wherein:

the base comprises a supporting cylinder, the rotating shaft is coaxially arranged in the supporting cylinder, and the supporting cylinder is provided with a rotating groove which is circumferentially arranged around the supporting cylinder;