CN216693539U

CN216693539U - Burner capable of converting fire shape

Info

Publication number: CN216693539U
Application number: CN202120929223.1U
Authority: CN
Inventors: 袁文锋; 蒋峰; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-06-07
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a burner capable of converting fire shapes, which comprises a fire cover, wherein the fire cover is provided with a fire rotating cavity and a fire straightening cavity, the fire rotating cavity and the fire straightening cavity are downwards opened and are arranged at intervals, the top of the fire rotating cavity is provided with a plurality of cutting grooves communicated with the fire rotating cavity, and the top of the fire straightening cavity is provided with a plurality of fire straightening holes communicated with the fire straightening cavity; the burner is provided with an air inlet cavity which is open upwards, and the air inlet cavity is selectively communicated with the fire rotating cavity and/or the fire straightening cavity. According to the burner, the fire rotating cavity and the direct fire cavity which are arranged at intervals are arranged on the fire cover, and the air inlet cavity of the burner is designed to be selectively communicated with the fire rotating cavity and/or the direct fire cavity, so that the fire shape of the burner can be converted among direct fire, rotating fire and rotating direct fire, the structure is simple, and different fire shapes can be converted for users to select.

Description

Combustor capable of converting fire shapes

Technical Field

The utility model relates to the technical field of burners and cookers, in particular to a burner capable of converting fire shapes.

Background

At present, most gas stoves on the market have single fire shapes, and the fire shapes are usually rotary fire, direct fire or rotary direct fire, so that different requirements of users cannot be met.

Therefore, the burner capable of changing the fire shape is designed to meet the selection requirements of different users.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the related art to some extent, and therefore, the present invention provides a burner capable of converting fire shapes, which has a simple structure and can convert different fire shapes for users to select.

According to the burner capable of converting the fire shape, the technical scheme is as follows:

a convertible firebox burner comprising: the fire cover is provided with a fire rotating cavity and a fire straightening cavity which are open downwards and are arranged at intervals, the top of the fire rotating cavity is provided with a plurality of cutting grooves communicated with the fire rotating cavity, and the top of the fire straightening cavity is provided with a plurality of fire straightening holes communicated with the fire straightening cavity; the burner is provided with an air inlet cavity which is open upwards, and the air inlet cavity is selectively communicated with the fire rotating cavity and/or the fire straightening cavity.

In some embodiments, the number of the fire rotating cavities and the number of the fire straightening cavities are equal to or less than two, and the fire straightening cavities and the fire rotating cavities are arranged in a staggered manner along the circumferential direction of the fire cover; the furnace end is provided with a plurality of air inlet cavities and blocking parts which are staggered in the circumferential direction, and the number of the air inlet cavities and the number of the blocking parts are the same as that of the fire swirling cavities; when the air inlet cavity is communicated with the fire rotating cavity, the blocking part seals the opening of the straight fire cavity; or when the air inlet cavity is communicated with the direct fire cavity, the blocking part seals the opening of the fire swirling cavity; or part of openings of the fire rotating cavity and the fire straightening cavity are communicated with the air inlet cavity, and the other part of openings are sealed by the blocking part.

In some embodiments, the blocking portion is a boss or a sealed cavity with an open top, and is used for sealing the opening of the fire swirling cavity or the opening of the fire straightening cavity, or is used for sealing a part of the opening of the fire swirling cavity and a part of the opening of the fire straightening cavity.

In some embodiments, an airflow passage is provided at a radially outer side or bottom of each of the blocking portions, and adjacent ones of the intake chambers communicate through the airflow passage.

In some embodiments, the fire cover is provided with a plurality of fire rotating cavities and fire straightening cavities which are arranged in a staggered mode along the circumferential direction or the radial direction; the air inlet cavity is of an annular structure and is respectively communicated with the fire rotating cavity and the fire straightening cavity; the sealing structure is movably arranged between the air inlet cavity and the fire cover and used for sealing the opening of the fire rotating cavity or the opening of the fire straightening cavity or used for sealing partial opening of the fire rotating cavity and partial opening of the fire straightening cavity.

In some embodiments, the number of the fire rotating cavities and the number of the fire straight cavities are equal to or less than two, and the fire rotating cavities and the fire straight cavities are arranged in a staggered manner along the circumferential direction of the fire cover; the sealing structure comprises baffle plates with the same number as the fire swirling cavities, and the baffle plates are movably arranged between the air inlet cavity and the fire cover and used for sealing the openings of the fire swirling cavities or the openings of the fire straightening cavities or used for sealing partial openings of the fire swirling cavities and partial openings of the fire straightening cavities.

In some embodiments, adjacent baffles are connected by connecting ribs, and openings for gas to pass through are formed between the baffles.

In some embodiments, the fire swirling cavity and the fire straightening cavity are both in an annular structure, and the fire straightening cavity is located at the radial inner side of the fire swirling cavity; the sealing structure comprises an inner ring baffle and an outer ring baffle, the inner ring baffle is detachably mounted at the bottom of the straight fire cavity and covers the opening of the straight fire cavity, and the outer ring baffle is detachably mounted at the bottom of the rotary fire cavity and covers the opening of the rotary fire cavity.

In some embodiments, the sealing structure comprises a middle ring baffle, the inner diameter of the outer ring baffle is larger than the inner diameter of the middle ring baffle, the middle ring baffle is detachably mounted between the air inlet cavity and the fire cover, the radial outer side of the middle ring baffle covers the inner side of the opening of the rotary fire cavity, and the radial inner side of the middle ring baffle covers the outer side of the opening of the straight fire cavity.

In some embodiments, the fire cover is further provided with an outer ring air cavity communicated with the air inlet cavity, the outer ring air cavity is located at the radial outer side of the straight fire cavity and the rotary fire cavity, the outer side wall of the fire cover is provided with a plurality of main fire holes arranged along the circumferential direction, and the main fire holes are communicated with the outer ring air cavity.

In some embodiments, the furnace end is further provided with an outer ring air inlet cavity located radially outside the air inlet cavity; the fire cover is further provided with an outer ring air cavity communicated with the outer ring air inlet cavity, the outer ring air cavity is located on the radial outer sides of the straight fire cavity and the rotary fire cavity, a plurality of main fire holes arranged along the circumferential direction are formed in the outer side wall of the fire cover, and the main fire holes are communicated with the outer ring air cavity.

Compared with the prior art, the utility model at least comprises the following beneficial effects:

according to the burner, the fire rotating cavity and the straight fire cavity which are arranged at intervals are arranged on the fire cover, and the air inlet cavity of the burner is designed to be selectively communicated with the fire rotating cavity and/or the straight fire cavity, so that the fire shape of the burner can be converted among straight fire, fire rotating and straight fire rotating, the structure is simple, and different fire shapes can be converted for a user to select.

Drawings

FIG. 1 is an exploded view of a burner according to a first embodiment of the present invention;

FIG. 2 is a bottom view of the fire cover in accordance with one embodiment of the present invention;

FIG. 3 is a top view of a burner according to one embodiment of the present invention, illustrating an eductor tube;

FIG. 4 is an exploded view of a burner according to a second embodiment of the present invention;

FIG. 5 is a top view of a third burner of the present invention illustrating an eductor tube;

FIG. 6 is an exploded view of a burner according to a fourth embodiment of the present invention;

fig. 7 is an exploded view of a burner according to a fifth embodiment of the present invention.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications of the embodiments of the utility model, or equivalent substitutions for parts of technical features without departing from the spirit of the utility model, should be included in the scope of the claims of the utility model.

Example one

As shown in fig. 1-3, the present embodiment provides a burner capable of changing fire shape, comprising a fire cover 1 and a burner 2, wherein the fire cover 1 is provided with a downward-opening fire swirling chamber 11 and a downward-opening fire straightening chamber 12, the fire swirling chamber 11 and the fire straightening chamber 12 are arranged at a distance, the top of the fire swirling chamber 11 is provided with a plurality of slots 110 communicated with the fire swirling chamber 11, the slots 110 are arranged along a radial direction, and when gas at the slots 110 is ignited, a fire swirling shape can be formed; the top of the straight fire cavity 12 is provided with a plurality of straight fire holes 120 communicated with the straight fire cavity, and the straight fire holes 120 are arranged at the top of the straight fire cavity 12 at intervals along the radial direction and the circumferential direction, so that when the gas at the cutting groove 110 is ignited, a straight fire shape can be formed. The furnace end 2 is provided with an air inlet cavity 21 which is open upwards, and the air inlet cavity 21 is selectively communicated with the rotary fire cavity 11 and/or the direct fire cavity 12. When the air inlet cavity 21 is only communicated with the cyclone fire cavity 11, the fuel gas is upwards transmitted into the cyclone fire cavity 11 from the air inlet cavity 21 of the burner head 1, then flows out of the cutting groove 110 and is ignited, and the fire of the burner is shaped as cyclone fire at the moment; when the air inlet cavity 21 is only communicated with the direct fire cavity 12, the fuel gas is upwards transmitted into the direct fire cavity 12 from the air inlet cavity 21 of the burner 1, then flows out of the direct fire hole 120 and is ignited, and the fire of the burner is shaped as direct fire; when the rotary fire cavity 11 and the straight fire cavity 12 are both communicated with the air inlet cavity 21, the fuel gas is upwards transmitted and shunted from the air inlet cavity 21 of the burner 1, one part of the fuel gas flows out of the cutting groove 110 through the rotary fire cavity 11 and is ignited, the other part of the fuel gas flows out of the straight fire hole 120 through the straight fire cavity 12 and is ignited, the fire shape of the burner is the rotary straight fire formed by combining the rotary fire and the straight fire, compared with the direct fire or the rotary fire, because all the straight fire holes 120 and all the cutting grooves 110 have the fuel gas to pass through and are ignited, the flame distribution of the rotary straight fire is more uniform, and the combustion firepower is larger.

It can be seen that the combustor of this embodiment sets up the spiral fire chamber 11 and the straight fire chamber 12 of interval arrangement on fire lid 1 to the air inlet chamber 21 of furnace end 2 designs to communicate selectively and revolves fire chamber 11 and/or straight fire chamber 12, makes the fire shape of combustor can be at the straight fire, revolve the fire and revolve and directly change between the fire, simple structure can change different fire shapes and supply the user to select.

As shown in fig. 1-2, preferably, fire cover 1 is equipped with a plurality of straight fire chamber 12 and a plurality of fire chamber 11 of spiraling along circumferential direction staggered arrangement, and the quantity of fire chamber 11 of spiraling is at least two, and the quantity of straight fire chamber 12 is also at least two, and the quantity of fire chamber 11 of spiraling is equal with the quantity of straight fire chamber 12, like this, through with straight fire chamber 12 and fire chamber 11 of spiraling design for along fire cover 1's circumferential direction staggered arrangement for straight fire chamber 12 and the distribution of fire chamber 11 of spiraling are more even, when guaranteeing that the combustor fire shape is straight fire or spiraling, and the distribution of burning flame is even, improves the even effect of heating. All be equipped with a plurality of grooving 110 along the even interval arrangement of circumferential direction at every top of whirling fire chamber 11, grooving 110 arranges along the radial direction of fire lid 1 to ensure that every whirling fire chamber 11 evenly gives vent to anger, do benefit to and improve the firepower distribution homogeneity of whirling fire in radial and circumferential direction, because grooving 110 arranges along radial direction, be convenient for transmit radial inboard flame to radial outside fast, promote the biography fire effect. All be equipped with at the top of every straight fire chamber 12 along a plurality of straight fire holes 120 of the even interval arrangement of circumference and radial direction to ensure that every straight fire chamber 12 evenly gives vent to anger, do benefit to and improve the firepower distribution homogeneity of straight fire in radial and circumference direction, because partial straight fire hole 120 arranges along radial direction, be convenient for transmit radial inboard flame to radial outside fast, promote and pass the fire effect.

Preferably, the fire cover 1 is further provided with an outer ring air chamber 13, the outer ring air chamber 13 is located radially outside the straight fire chamber 12 and the rotary fire chamber 11, and the outer ring air chamber 13 communicates with the air intake chamber 21 of the burner 2. The outer side wall of the fire cover 1 is provided with a plurality of main fire holes 130 arranged along the circumferential direction, and the main fire holes 130 are communicated with the outer ring air cavity 13. From this, through add outer loop air cavity 13 and the main fire hole 130 of intercommunication outer loop air cavity 13 on fire lid 1, when some gas when main fire hole 130 department ignition burning, can form outer loop fire, this outer loop fire cooperation is directly fired, is revolved fire and is revolved any fire shape in the direct fire for the firepower of combustor distributes more extensively, and the burning firepower is bigger, improves heating efficiency, and in addition, the burning flame of main fire hole 130 department can also play good flame steady effect.

As shown in fig. 1 and 3, preferably, the burner 2 is provided with a plurality of air inlet cavities 21 and blocking portions 22 which are staggered in the circumferential direction, the number of the air inlet cavities 21 is the same as that of the blocking portions 22, and the number of the blocking portions 22 is the same as that of the swirling cavities 11 or the straight fire cavities 12. When the fire cover 1 is rotated to enable each blocking part 22 to completely seal the opening of the corresponding straight fire cavity 12, at the moment, each air inlet cavity 21 is completely communicated with the corresponding rotary fire cavity 11, and when the burner is ignited and combusted, a rotary fire shape can be formed; or, the fire cover 1 is rotated to enable each blocking part 22 to completely seal the opening of the corresponding fire rotating cavity 11, at the moment, each air inlet cavity 21 is completely communicated with the corresponding straight fire cavity 12, and when the combustor is ignited and combusted, a straight fire shape can be formed; when the rotary fire cover 1 enables each blocking part 22 to be located between the adjacent rotary fire cavity 11 and the straight fire cavity 12, the opening of each rotary fire cavity 11 is communicated with the air cavity 21 on one side in the circumferential direction at the moment, the opening of each rotary fire cavity 11 is sealed by the blocking part 22 on the other side in the circumferential direction, correspondingly, the opening of each straight fire cavity 12 is communicated with the air cavity 21 on one side in the circumferential direction, the opening of each straight fire cavity 12 is sealed by the blocking part 22 on the other side in the circumferential direction, and when the burner is ignited and combusted, a rotary straight fire shape can be formed.

Preferably, the blocking part 22 of the present embodiment is a sealed cavity 221 with an open top, and the sealed cavity 221 is not communicated with an air source and is used for sealing the opening of the fire swirling cavity 11 or the opening of the fire straightening cavity 12, or is used for sealing a part of the opening of the fire swirling cavity 11 and a part of the opening of the fire straightening cavity 12. When the sealing cavity 221 is connected with the corresponding swirling fire cavity 11, the opening of the swirling fire cavity 11 can be completely covered, so that the fuel gas cannot enter the swirling fire cavity 11, at the moment, the straight fire cavity 12 is communicated with the corresponding air inlet cavity 21, the fuel gas transmitted upwards from the air inlet cavity 21 of the burner 2 is divided into two parts, one part is transmitted to the straight fire hole 120 of the straight fire cavity 12, and the other part is transmitted to the main fire hole 130 of the outer ring air cavity 13; on the contrary, when the sealing cavity 221 is connected to the corresponding straight fire cavity 12, the opening of the straight fire cavity 12 may be completely covered, so that the gas cannot enter the straight fire cavity 121, at this time, the swirling fire cavity 11 is communicated with the corresponding gas inlet cavity 21, the gas transmitted upward from the gas inlet cavity 21 of the burner 2 is divided into two parts, one part is transmitted to the cutting groove 110 of the swirling fire cavity 11, and the other part is transmitted to the main fire hole 130 of the outer ring gas cavity 13. Of course, each sealing cavity 221 may also span the adjacent straight fire cavity 12 and the adjacent swirling fire cavity 11, at this time, each air inlet cavity 21 is communicated with the adjacent straight fire cavity 12 and the swirling fire cavity 11, at this time, the fuel gas transmitted upwards from the air inlet cavity 21 of the burner 2 is divided into three parts, the first part is transmitted to the cutting groove 110 of the swirling fire cavity 11, the second part is transmitted to the straight fire hole 120 of the straight fire cavity 12, and the third part is transmitted to the main fire hole 130 of the outer ring air cavity 13.

As shown in fig. 3, preferably, an airflow passage 23 is provided at a radially outer side or bottom of each blocking portion 22, and adjacent intake chambers 21 communicate with each other through the airflow passage 23. This embodiment uses airflow channel 23 to set up the radial outside at separation portion 22 as an example, airflow channel 23 intercommunication fire lid 1's outer ring air cavity 13 this moment, like this, through airflow channel 23, make adjacent intake chamber 21 be linked together, be convenient for improve and divide gas homogeneity, when making the gas upwards transmit from intake chamber 21, partial gas is shunted to airflow channel 23 in and is full of airflow channel 23, then the gas upwards overflows to outer ring air cavity 13, the gas that makes to flow in outer ring air cavity 13 distributes more evenly, improve the firepower homogeneity of main fire hole 130.

As shown in fig. 1, the burner 2 is further provided with an injection pipe 24, each air inlet cavity 21 is communicated with the injection pipe 24, so as to synchronously control the on-off condition of the fuel gas in all the air inlet cavities 21, and as each air inlet cavity 21 is communicated with the injection pipe 24 and all the air inlet cavities 21 are uniformly arranged along the circumferential direction, the combustion distribution transmitted to the fire cover 1 is more uniform. Of course, the injection pipe 24 may be designed to communicate with one of the air inlet chambers 21, or communicate with two air inlet chambers 21 arranged oppositely.

As shown in fig. 1, further, the fire cover further includes a positioning structure 4, where the positioning structure 4 includes a plurality of positioning pillars 41 and a plurality of positioning holes 42, in this embodiment, the number of the positioning pillars 41 is two, two positioning pillars 41 are arranged at intervals along the circumferential direction, and each positioning pillar 41 is integrally formed with the bottom surface of the inner side wall of the fire cover 1. The number of the positioning holes 42 is three, three positioning holes 42 are arranged on the burner 2 at intervals along the circumferential direction and are located on the radial inner side of the air inlet cavity 21, the distance between two adjacent positioning holes 42 is equal to the distance between two positioning columns 41, the three positioning holes 42 are arranged in sequence according to the distance from the ignition and flameout assembly 5, the positioning hole 42 closest to the ignition and flameout assembly 5 is the first positioning hole, the positioning hole 42 farthest from the ignition and flameout assembly 5 is the third positioning hole, and the positioning hole located in the middle is the second positioning hole.

Two positioning posts 41 of the fire cover 1 can be inserted into the first and second positioning holes 42, or can be arranged in the second and third positioning holes 42. When two positioning columns 41 of the fire cover 1 are respectively inserted into the first positioning hole 42 and the second positioning hole 42, the fire swirling cavity 11 is communicated with the air inlet cavity 21, fuel gas passes through the fire swirling cavity 11, the burner burns in a fire swirling shape, correspondingly, the opening of the straight fire cavity 12 is covered and sealed by the blocking part 22, and no fuel gas passes through the straight fire cavity 12. When two positioning columns 41 of the fire cover 1 are respectively inserted into the second positioning hole 42 and the third positioning hole 42, the straight fire cavity 12 is communicated with the air inlet cavity 21, gas passes through the straight fire cavity 12, the burner burns in a straight fire shape, correspondingly, the opening of the fire rotating cavity 11 is covered and sealed by the blocking part 22, and no gas passes through the fire rotating cavity 11. Therefore, the two positioning columns 41 are matched with the three positioning holes 43, so that the connection between the fire cover 1 and the furnace end 2 is realized, the fire cover 1 is effectively prevented from shifting, and the reliable conversion between direct fire and rotary fire is facilitated.

In other embodiments, the number of the positioning holes 42 may be four, and when the two positioning pillars 41 of the fire cover 1 are inserted into the third and fourth positioning holes 42, the burner burns in a spiral fire shape.

Example two

As shown in fig. 4, the present embodiment is different from the first embodiment in the structure of the blocking portion 22. Specifically, the blocking portion 22 is a boss 222, the boss 222 is disposed inside the intake cavity 21 and is integrally formed with the inner annular wall of the intake cavity 21, the top surface of the boss 222 is a plane, the top surface of the boss 222 is used for covering the opening of the swirling fire cavity 11 or the opening of the direct fire cavity 12, so that the gas cannot enter the swirling fire cavity 11 or the direct fire cavity 12, or is used for covering a part of the opening of the swirling fire cavity 11 and a part of the opening of the direct fire cavity 12, and other portions are the same as those in the first embodiment.

It can be seen that, through designing separation portion 22 as boss 222 to the top surface design of boss 222 is the plane, makes the overall structure of separation portion 22 simpler, and quick machine-shaping is easier, does benefit to the machining precision that reduces spiral fire chamber 11 and the straight fire chamber 12 of fire lid 1 simultaneously. In addition, when the combustor is in the direct fire or the direct fire state, even if the fire cover 1 slightly deflects, the top surface of the boss 222 can be effectively ensured to reliably cover the opening of the rotary fire cavity 11 or the direct fire cavity 12, gas is prevented from streaming to the rotary fire cavity 11 or the direct fire cavity 12, and the gas cross-flow prevention effect is improved.

EXAMPLE III

As shown in fig. 5, the present embodiment is different from the first embodiment in the structure of the burner 2. Specifically, the adjacent air inlet cavities 21 are not communicated, or the adjacent air inlet cavities 21 are communicated through an air flow passage (not shown) located at the bottom of the blocking portion 22, and all the air inlet cavities 21 are communicated with the same injection pipe. The furnace end 2 of this embodiment is further provided with an outer ring air inlet cavity 25 located on the radial outer side of the air inlet cavity 21, and the outer ring air inlet cavity 25 and the air inlet cavity 21 are communicated with different injection pipes, that is, the outer ring air inlet cavity 25 is communicated with one injection pipe separately. The outer ring air cavity 13 of the fire cover 1 is directly communicated with the outer ring air inlet cavity 25, and other parts are the same as those of the first embodiment.

It can be seen that, through set up the outer loop air intake chamber 25 that is located the radial outside of air intake chamber 21 on furnace end 2 to with outer loop air intake chamber 25 intercommunication fire lid 1's outer loop air cavity 13, make the gas supply of outer loop air cavity 13 provide alone by outer loop air intake chamber 25, and like this, through the gas passageway of control outer loop air intake chamber 25, can realize whether the burning is igniteed in main fire hole 130 of control, realized whether the independent control combustion chamber forms outer loop fire, make firepower control range wider, satisfy user's big firepower demand better.

Example four

As shown in fig. 6, the present embodiment is different from the first embodiment in that the burner 2 has a different structure, and the burner further includes a sealing structure 3. Specifically, the air inlet cavity 21 of the burner 2 is of an annular structure, and the air inlet cavity 21 is communicated with the rotary fire cavity 11 and the direct fire cavity 12 respectively. The sealing structure 3 is movably arranged between the air inlet cavity 21 and the fire cover 1 and is used for sealing the opening of the fire swirling cavity 11 or the opening of the fire straightening cavity 12, or is used for sealing part of the opening of the fire swirling cavity 11 and part of the opening of the fire straightening cavity 12.

In this embodiment, the sealing structure 3 includes baffles 31 equal in number to the fire swirling cavities 11 or the fire straightening cavities 12, each baffle 31 is movably disposed between the air intake cavity 21 and the fire cover 1, and is used for sealing the opening corresponding to the fire swirling cavity 11 or the opening corresponding to the fire straightening cavity 12, or is used for sealing a part of the opening corresponding to the fire swirling cavity 11 and a part of the opening corresponding to the fire straightening cavity 12, so that, through the plurality of baffles 31, it is possible to adjust each fire swirling cavity 11 to be connected to the air intake cavity 21 or the baffles 31, and adjust each fire straightening cavity 12 to be connected to the air intake cavity 21 or the baffles 31. Correspondingly, the first or third positioning hole 42 in the positioning structure 4 can be omitted, and other parts are the same as those in the first embodiment.

Therefore, by additionally arranging the sealing structure 3, the combustor can be flexibly switched among direct fire, rotary fire and rotary direct fire, and compared with the furnace end in the first embodiment, the furnace end 2 in the first embodiment has a simpler structure, and the furnace end 2 is more convenient to machine and form quickly.

EXAMPLE five

As shown in fig. 7, the present embodiment is different from the fourth embodiment in the structure of the seal structure 3. Specifically, the sealing structure 3 further includes a plurality of connecting ribs 32, the adjacent baffles 31 are connected by the connecting ribs 32, an opening 33 for passing gas is formed between the baffles 31, and other portions are the same as those in the fourth embodiment.

Therefore, the adjacent baffles 31 are reliably connected into a whole through the connecting ribs 32, so that each baffle 31 is convenient to move synchronously, and the fire line switching is quicker and more efficient.

EXAMPLE six

The present embodiment is different from the fourth or fifth embodiment in that the fire lid 1 and the seal structure 3 have different structures. Specifically, the rotary fire cavity 11 and the direct fire cavity 12 are arranged on the fire cover 1 at intervals along the radial direction, the rotary fire cavity 11 and the direct fire cavity 12 are both in an annular structure, the number of the rotary fire cavity 11 and the number of the direct fire cavity 12 are both one, and the direct fire cavity 12 is located on the radial inner side of the rotary fire cavity 11. The sealing structure 3 comprises an inner ring baffle and an outer ring baffle, the inner ring baffle is detachably arranged at the bottom of the straight fire cavity 12 and covers the opening of the straight fire cavity 12, so that the opening of the straight fire cavity 12 is sealed through the inner ring baffle; the outer ring baffle is detachably mounted at the bottom of the fire swirling cavity 11 and covers the opening of the fire swirling cavity 11, so that the opening of the fire swirling cavity 11 is sealed through the outer ring baffle. Thus, the inner ring baffle plate selectively covers the opening of the straight fire cavity 12, and the outer ring baffle plate selectively covers the opening of the rotary fire cavity 11, so that the fire line can be switched between the straight fire and the rotary fire.

In addition, the sealing structure 3 may further include a middle ring baffle, the inner diameter of the outer ring baffle is larger than the inner diameter of the middle ring baffle and larger than the inner diameter of the inner ring baffle, the middle ring baffle is detachably installed between the air inlet cavity 21 and the fire cover 1, the radial outer side of the middle ring baffle covers the inner side of the opening of the fire swirling cavity 11, and the radial inner side of the middle ring baffle covers the outer side of the opening of the fire straightening cavity 12, so that the burner has a fire swirling and straightening function by selectively covering the inner side of the opening of the fire swirling cavity 11 and the outer side of the opening of the fire straightening cavity 12 with the middle ring baffle.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the utility model.

Claims

1. A convertible firebox burner comprising:

the fire cover (1) is provided with a rotary fire cavity (11) and a straight fire cavity (12) which are opened downwards and are arranged at intervals, the top of the rotary fire cavity (11) is provided with a plurality of cutting grooves (110) communicated with the rotary fire cavity, and the top of the straight fire cavity (12) is provided with a plurality of straight fire holes (120) communicated with the straight fire cavity;

the burner (2) is provided with an air inlet cavity (21) which is open upwards, and the air inlet cavity (21) is selectively communicated with the rotary fire cavity (11) and/or the straight fire cavity (12).

2. A convertible fire shape burner as claimed in claim 1, characterized in that said fire swirling chambers (11) and said fire straightening chambers (12) are equal in number and not less than two, said fire straightening chambers (12) and said fire swirling chambers (11) are staggered in a circumferential direction of said fire cover (1); the furnace end (2) is provided with a plurality of air inlet cavities (21) and blocking parts (22) which are arranged in a staggered mode along the circumferential direction, and the number of the air inlet cavities (21) and the number of the blocking parts (22) are the same as that of the fire swirling cavities (11);

when the air inlet cavity (21) is communicated with the fire swirling cavity (11), the blocking part (22) seals the opening of the straight fire cavity (12); or when the air inlet cavity (21) is communicated with the straight fire cavity (12), the blocking part (22) seals the opening of the fire swirling cavity (11); or part of openings of the fire swirling cavity (11) and the fire straightening cavity (12) are communicated with the air inlet cavity (21), and the other part of openings are sealed by the blocking part (22).

3. A convertible fire burner as claimed in claim 2, characterised in that said dam (22) is a boss (222) or an open-topped sealed chamber (221) for sealing the opening of said swirling chamber (11) or the opening of said straight chamber (12), or for sealing part of the opening of said swirling chamber (11) and part of the opening of said straight chamber (12).

4. A convertible burner as claimed in claim 2, characterised in that an airflow channel (23) is provided radially outside or at the bottom of each of said partitions (22), adjacent said intake chambers (21) communicating through said airflow channels (23).

5. A burner as claimed in claim 1, characterized by further comprising a sealing structure (3), wherein said fire cover (1) is provided with a plurality of said swirling fire chambers (11) and said straight fire chambers (12) which are staggered in the circumferential or radial direction; the air inlet cavity (21) is of an annular structure and is respectively communicated with the fire swirling cavity (11) and the fire straightening cavity (12);

the sealing structure (3) is movably arranged between the air inlet cavity (21) and the fire cover (1) and is used for sealing the opening of the fire swirling cavity (11) or the opening of the straight fire cavity (12) or sealing partial opening of the fire swirling cavity (11) and partial opening of the straight fire cavity (12).

6. A convertible fire shape burner as claimed in claim 5, characterized in that said fire swirling chambers (11) and said fire straightening chambers (12) are equal in number and not less than two, said fire swirling chambers (11) and said fire straightening chambers (12) being staggered in a circumferential direction of said fire cover (1); the sealing structure (3) comprises baffle plates (31) with the same number as the fire swirling cavities (11), and the baffle plates (31) are movably arranged between the air inlet cavity (21) and the fire cover (1) and used for sealing the openings of the fire swirling cavities (11) or the openings of the straight fire cavities (12) or used for sealing partial openings of the fire swirling cavities (11) and partial openings of the straight fire cavities (12).

7. A burner as claimed in claim 6, characterised in that adjacent baffles (31) are connected by a web (32), and in that apertures (33) are formed between the baffles (31) for the passage of gas.

8. A burner as claimed in claim 5, characterized in that the swirling chamber (11) and the straight chamber (12) are both annular structures, the straight chamber (12) being located radially inside the swirling chamber (11); the sealing structure (3) comprises an inner ring baffle and an outer ring baffle, the inner ring baffle is detachably mounted at the bottom of the straight fire cavity (12) and covers the opening of the straight fire cavity (12), and the outer ring baffle is detachably mounted at the bottom of the rotary fire cavity (11) and covers the opening of the rotary fire cavity (11).

9. Burner as claimed in claim 8, characterized in that said sealing means (3) comprises a middle ring baffle, the inner diameter of said outer ring baffle > the inner diameter of said middle ring baffle > the inner diameter of said inner ring baffle, said middle ring baffle being removably mounted between said air intake chamber (21) and said fire cover (1), and the radially outer side of the middle ring baffle covers the inner side of the opening of said swirling fire chamber (11) and the radially inner side covers the outer side of the opening of said straight fire chamber (12).

10. A convertible fire burner as claimed in any one of claims 1 to 9, characterised in that said fire lid (1) is further provided with an outer ring air chamber (13) communicating with said air inlet chamber (21), said outer ring air chamber (13) being located radially outside said straight fire chamber (12) and said swirling fire chamber (11), and a plurality of main fire holes (130) arranged in a circumferential direction are provided on an outer side wall of said fire lid (1), said main fire holes (130) communicating with said outer ring air chamber (13).

11. Burner according to any one of claims 1 to 9, characterized in that said burner (2) is further provided with an outer annular intake chamber (25) located radially outside said intake chamber (21); the fire cover (1) is further provided with an outer ring air cavity (13) communicated with the outer ring air inlet cavity (25), the outer ring air cavity (13) is located on the radial outer sides of the straight fire cavity (12) and the rotary fire cavity (11), a plurality of main fire holes (130) arranged along the circumferential direction are formed in the outer side wall of the fire cover (1), and the main fire holes (130) are communicated with the outer ring air cavity (13).