CN216924350U

CN216924350U - Upper air inlet type combustor with gas distribution premixing structure

Info

Publication number: CN216924350U
Application number: CN202220592869.XU
Authority: CN
Inventors: 覃吉明; 向安奎; 陈阳; 李洲承; 莫秋霞
Original assignee: Foshan Dimple Electric Appliance Co ltd; Guangdong Siliko Intelligent Technology Co ltd
Current assignee: Foshan Dimple Electric Appliance Co ltd; Guangdong Siliko Intelligent Technology Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-07-08
Anticipated expiration: 2032-03-17

Abstract

The utility model discloses an upper air inlet type combustor with an air distribution premixing structure, which comprises a furnace end main body, a first air distribution disc and a second air distribution disc, wherein the first air distribution disc and the second air distribution disc are arranged above the furnace end main body; the first air distribution plate is provided with an outer ring air distribution seat extending vertically, the second air distribution plate is arranged on the outer ring air distribution seat, and an outer ring fire cover is arranged on the second air distribution plate; a first mixing cavity is formed by the enclosing of the inner walls of the first air distribution plate and the second air distribution plate; a second mixing cavity is formed by the second air distribution plate and the inner wall of the outer ring fire cover in an enclosing manner; the second gas distribution disc is provided with a plurality of gas distribution communication holes so as to communicate the first mixing cavity with the second mixing cavity. The burner is simple in structure, and the mixing degree of the gas and the air is effectively improved in the upper air inlet type burner with limited arrangement space of the mixing cavity through the twice mixing action of the first mixing cavity and the second mixing cavity, so that the combustion efficiency of the burner is improved.

Description

Upper air inlet type combustor with gas distribution premixing structure

Technical Field

The utility model relates to the technical field of gas cookers, in particular to an upper air inlet type combustor with a gas distributing premixing structure.

Background

The existing upper air inlet type combustor comprises a furnace end, an air distribution disc and a fire cover, when the combustor is installed on a panel of a kitchen range, an air inlet of the air distribution disc and an air outlet of the furnace end are both located above the panel of the kitchen range, so that the upper air inlet type combustor is safer to use, and the problem that the kitchen range is flamed out due to opening and closing of a cabinet door can be well solved.

However, compared with the traditional lower air inlet burner, the outer ring of the upper air inlet burner is generally integrated above the panel of the stove with the air distribution plate, and a long tubular injection pipe embedded in the shell of the stove is not arranged, so that the stroke of the air and gas mixing cavity is short, and the mixing degree of gas and air is not high.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an upper air inlet type combustor with an air distribution premixing structure.

The technical scheme adopted by the embodiment of the utility model for solving the technical problem is as follows: an upper intake type burner having a gas-distributing premixing structure, comprising: the burner comprises a burner body, a first gas distribution disc and a second gas distribution disc, wherein the first gas distribution disc and the second gas distribution disc are arranged above the burner body;

the first air distribution plate is provided with an outer ring air distribution seat extending vertically, the second air distribution plate is installed on the outer ring air distribution seat, and an outer ring fire cover is installed on the second air distribution plate;

the inner walls of the first air distribution disc and the second air distribution disc are surrounded to form a first mixing cavity; a second mixing cavity is formed by the second air distribution plate and the inner wall of the outer ring fire cover in an enclosing manner; and the second gas distribution disc is provided with a plurality of gas distribution communication holes so as to communicate the first mixing cavity with the second mixing cavity.

Optionally, the furnace end main body is provided with at least one outer ring gas nozzle; the first gas distribution disc is provided with at least one outer ring injection cavity; the gas inlet end of the outer ring injection cavity corresponds to the outer ring gas nozzle, and the gas outlet end of the outer ring injection cavity is communicated with the first mixing cavity.

Optionally, the gas distribution communication hole is far away from a connection between the gas outlet end of the outer ring injection cavity and the first mixing cavity.

Optionally, the outer ring draws and penetrates the chamber and be the arc setting, the outer ring draws the chamber and forms helical structure's mixing passage with first mixing chamber intercommunication.

Optionally, the joint of the outer ring injection cavity and the first mixing cavity is in a long-strip groove structure; the long groove is close to the air outlet end of the outer ring injection cavity and is an air outlet starting end of a joint, and the air distribution communication hole is not overlapped with the air outlet starting end of the joint.

Optionally, the number of the gas distribution communication holes is three, the three gas distribution communication holes are arranged at 90-degree intervals and are far away from the joint of the gas outlet end of the outer ring injection cavity and the first mixing cavity.

Optionally, the number of the outer ring injection cavities is two, and the two outer ring injection cavities are arranged in central symmetry.

Optionally, the outer ring air-separating seat includes two outer ring side walls concentrically arranged; the outer ring side wall is provided with an inwards concave step structure, and the second air distribution disc can be arranged on the step structure.

Optionally, the first gas distribution disc is provided with a limiting column; the second gas distribution disc is provided with a limiting hole corresponding to the limiting column.

Optionally, the first air distribution disc is further provided with an inner ring air distribution seat extending vertically, and the inner ring air distribution seat is provided with an inner ring fire cover; and the second air distribution plate is provided with a secondary air supplement groove, and the secondary air supplement groove can supplement secondary air to the inner ring air distribution seat.

The utility model has the beneficial effects that: a second air distribution disc is arranged between the first air distribution disc and the outer ring outer cover, the second air distribution disc and the first air distribution disc and the outer ring fire cover form a first mixing cavity and a second mixing cavity respectively, and the communication between the mixing cavity and the fire cover is partially blocked; gas and air are once mixed in first mixing chamber by the separation of second gas distribution dish, because blockking of second gas distribution dish, gas and air can carry out intensive mixing, get into the second mixing chamber through dividing the gas intercommunicating pore afterwards, carry out the secondary and mix, then export through the fire hole of outer ring fire lid. The burner is simple in structure, and the mixing degree of the gas and the air is effectively improved in the upper air inlet type burner with limited arrangement space of the mixing cavity through the twice mixing action of the first mixing cavity and the second mixing cavity, so that the combustion efficiency of the burner is improved.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible and comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of an upper air inlet type burner with an air-distributing premixing structure according to an embodiment of the present invention;

FIG. 2 is an exploded view of the upper air intake type burner with the air-distributing premixing structure in FIG. 1;

FIG. 3 is an exploded view of the upper inlet air burner of FIG. 2 with the air-distributing premixing structure;

FIG. 4 is an exploded schematic view of the first and second gas splitters;

FIG. 5 is a sectional view of an upper intake type burner having a gas-distributing premixing structure in one embodiment.

Description of the main element symbols:

10. a burner body; 11. an outer ring gas nozzle; 12. an outer ring gas inlet port; 13. an inner ring gas nozzle; 14. an inner ring gas inlet port; 20. a first gas distribution plate; 21. an outer ring gas distribution seat; 211. an outer ring sidewall; 22. an outer ring injection cavity; 23. a limiting post; 24. an inner ring gas distribution seat; 25. an inner ring injection cavity; 30. a second gas distribution plate; 31. a gas distribution communicating hole; 32. a limiting hole; 33. a secondary supplementary air tank; 40. an outer ring fire cover; 41. an inner ring fire cover; 50. a first mixing chamber; 51. a second mixing chamber; 60. a joint; 61. and an air outlet starting end.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, preferred embodiments of which are illustrated in the accompanying drawings, wherein the drawings are provided for the purpose of visually supplementing the description in the specification and so forth, and which are not intended to limit the scope of the utility model.

In the description of the present invention, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the present number, and greater than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless explicitly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can be detachably connected and can be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

Examples

Referring to fig. 1 to 5, the present invention provides an upper intake type burner with a gas-distributing premixing structure, including: a burner body 10, and a first gas distribution plate 20 and a second gas distribution plate 30 which are installed above the burner body 10;

the first gas distribution plate 20 is provided with an outer ring gas distribution seat 21 extending vertically, the second gas distribution plate 30 is arranged on the outer ring gas distribution seat 21, and an outer ring fire cover 40 is arranged on the second gas distribution plate 30;

a first mixing cavity 50 is formed by the inner walls of the first air distribution plate 20 and the second air distribution plate 30; a second mixing cavity 51 is formed by the second gas distribution plate 30 and the inner wall of the outer ring fire cover 40 in an enclosing manner; the second gas distribution plate 30 is provided with a plurality of gas distribution communication holes 31 to communicate the first mixing chamber 50 with the second mixing chamber 51.

In the utility model, a second air distribution disc 30 is arranged between the first air distribution disc 20 and the outer ring outer cover, the second air distribution disc 30 forms a first mixing cavity 50 and a second mixing cavity 51 with the first air distribution disc 20 and the outer ring fire cover 40 respectively, and the communication between the mixing cavities and the fire cover is partially blocked; the gas and the air are blocked by the second gas distribution plate 30 to be mixed in the first mixing chamber 50 for the first time, and due to the blocking of the second gas distribution plate 30, the gas and the air can be fully mixed, then enter the second mixing chamber 51 through the gas distribution communication hole 31 to be mixed for the second time, and then are output through the fire hole of the outer ring fire cover 40. According to the utility model, the structure of the burner is simple, the gas and the air are mixed twice through the first mixing cavity 50 and the second mixing cavity 51, and the mixing degree of the gas and the air is effectively improved in the upper air inlet type burner with limited arrangement space of the mixing cavities, so that the combustion efficiency of the burner is improved.

In the present embodiment, the burner body 10 is provided with at least one outer ring gas nozzle 11; the first gas distribution disc 20 is provided with at least one outer ring injection cavity 22; the air inlet end of the outer ring injection cavity 22 corresponds to the outer ring gas nozzle 11, and the air outlet end of the outer ring injection cavity 22 is communicated with the first mixing cavity 50. The air inlet end of the outer ring injection cavity 22 and the nozzle are arranged at intervals, and when the nozzle injects fuel towards the outer ring injection cavity 22, air is carried into the outer ring injection cavity 22, so that preliminary mixing of injected air, fuel gas and air is achieved. Preferably, two outer ring gas nozzles 11 are provided.

Specifically, the burner main body 10 is provided with an outer ring air inlet port and an inner ring air inlet port which are connected with a gas pipe, gas of the gas pipe is sent into the burner main body 10 from the outer ring air inlet port, and the gas passes through an outer ring gas passage and then is injected into the outer ring injection cavity 22 through an outer ring gas nozzle 11; similarly, the gas in the gas pipe is fed into the burner body 10 from the inner ring gas inlet port, passes through the inner ring gas passage, and then is injected into the inner ring injection cavity 25 through the inner ring gas nozzle 13.

In this embodiment, the outer ring ejection cavity 22 may be configured as a strip-shaped or spiral structure according to the arrangement requirement; the outer annular injection cavity 22 and the first mixing cavity 50 can be communicated through a connecting hole or be in transitional connection through a long groove.

In this embodiment, in order to allow the gas and air to pass through the first mixing chamber 50 for a sufficient mixing path and time, they are supplied to the second mixing chamber 51 through the gas communication hole 31; the gas-distributing communication hole 31 is far away from the junction 60 of the gas outlet end of the outer ring injection cavity 22 and the first mixing cavity 50.

In some embodiments, the outer annular ejection chamber 22 is arc-shaped, and the outer annular ejection chamber 22 is communicated with the first mixing chamber 50 to form a mixing channel with a spiral structure. The spiral mixing channel is formed by enabling gas and air to rotate and flow for multiple circles in the first mixing cavity 50 and then enter the second mixing cavity 51 through the gas communication hole 31, namely, the flowing stroke of the gas in the first mixing cavity 50 is prolonged in a phase change mode, and therefore the mixing effect of the gas and the air is improved.

Referring to fig. 4, in the present embodiment, the connection portion 60 between the arc-shaped outer ring injection cavity 22 and the first mixing cavity 50 is in a transition connection in a long-strip groove structure. The joint 60 of the outer ring injection cavity 22 and the first mixing cavity 50 is in a long-strip groove structure; the gas outlet end of the strip groove close to the outer ring injection cavity 22 is a gas outlet starting end 61 of a joint 60, and the gas distribution communication hole 31 is not overlapped with the gas outlet starting end 61 of the joint 60. The gas distributing communication hole 31 is not overlapped with the gas outlet starting end 61 of the joint 60, when the gas and the air are sent into the first mixing chamber 50, the gas and the air can not be directly sent into the second mixing chamber 51 from the gas distributing communication hole 31, and the gas and the air need to be carried and sent into the gas distributing communication hole 31 in the process of rotating flow, so that the gas and the air can be effectively mixed.

In this embodiment, three gas distribution communication holes 31 are provided, and the three gas distribution communication holes 31 are arranged at 90 ° intervals and far away from the junction 60 between the gas outlet end of the outer ring injection cavity 22 and the first mixing cavity 50. The plurality of gas distribution communication holes 31 arranged at intervals enable the gas to be uniformly distributed when the gas is sent into the second mixing cavity 51 from the first mixing cavity 50, and the gas outlet end of the outer ring injection cavity 22 is far away from the junction 60 of the first mixing cavity 50, so that the gas and the air can be sent into the second mixing cavity 51 after a relatively long stroke.

In some embodiments, there are two outer ring injection cavities 22, and the two outer ring injection cavities 22 are arranged in a central symmetry manner. Two ejector pipes with central symmetry can send gas and air into the same rotation direction, and form a bolt rotation supply circulation structure with more uniform outer ring gas.

In some embodiments, the air inlet end of the outer annular injection cavity 22 is provided with a flared opening extending outward and expanding toward the outer annular nozzle, so that fuel and air injected by the nozzle can be better introduced into the outer annular injection cavity 22.

In the present embodiment, the outer ring gas separation base 21 includes two outer ring side walls 211 concentrically arranged; the outer ring side wall 211 is provided with a stepped structure that is concave and on which the second gas distribution plate 30 can be mounted. The second gas distribution plate 30 can be firmly locked and fixed in the first gas distribution plate 20 through a step structure.

Specifically, the second gas distribution plate 30 is mounted to the first gas distribution plate 20 by interference press-fit connection.

Further, the first air distribution disc 20 is provided with a limiting column 23; the second gas distribution plate 30 is provided with a limiting hole 32 corresponding to the limiting column 23. The second gas distribution plate 30 and the first gas distribution plate 20 can limit the relative positions of the first gas distribution plate 20 and the second gas distribution plate 30 through aligning the limiting columns 23 and the limiting holes 32, and then are compacted, so that the relative positions of the first gas distribution plate 20 and the second gas distribution plate can be ensured, and the design requirements are met.

In some two implementations, the first gas distribution plate 20 is further provided with an inner ring gas distribution seat 24 extending vertically, and the inner ring gas distribution seat 24 is provided with an inner ring fire cover 41; the second air distribution plate 30 is provided with a secondary air supplement groove 33, and the secondary air supplement groove 33 can supplement secondary air to the inner ring air distribution seat 24. The secondary supplementary air groove 33 arranged on the second gas distribution plate 30 provides secondary air for the combustion of the inner ring fire, thereby improving the combustion efficiency of the inner ring fire.

The present invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications and substitutions are included in the scope of the present invention defined by the claims.

Claims

1. An upper air inlet type burner with a gas-distributing premixing structure, comprising: the gas stove comprises a stove head main body (10), and a first gas distribution disc (20) and a second gas distribution disc (30) which are arranged above the stove head main body (10);

the first gas distribution plate (20) is provided with a vertically extending outer ring gas distribution seat (21), the second gas distribution plate (30) is installed on the outer ring gas distribution seat (21), and an outer ring fire cover (40) is installed on the second gas distribution plate (30);

a first mixing cavity (50) is formed by the enclosing of the inner walls of the first air distribution plate (20) and the second air distribution plate (30); a second mixing cavity (51) is formed by the second gas distribution plate (30) and the inner wall of the outer ring fire cover (40) in an enclosing manner; the second gas distribution disc (30) is provided with a plurality of gas distribution communication holes (31) so as to enable the first mixing cavity (50) to be communicated with the second mixing cavity (51).

2. The upper intake air type burner with a gas-distributing premixing structure as claimed in claim 1, wherein: the furnace end main body (10) is provided with at least one outer ring gas nozzle (11); the first air distribution disc (20) is provided with at least one outer ring injection cavity (22); the gas inlet end of the outer ring injection cavity (22) corresponds to the outer ring gas nozzle (11), and the gas outlet end of the outer ring injection cavity (22) is communicated with the first mixing cavity (50).

3. The upper intake air type burner with a gas-distributing premixing structure as claimed in claim 2, wherein: the gas-distributing communication hole (31) is far away from the joint (60) of the gas outlet end of the outer ring injection cavity (22) and the first mixing cavity (50).

4. The upper intake air type burner with a gas-distributing premixing structure as claimed in claim 2, wherein: the outer ring injection cavity (22) is arranged in an arc shape, and the outer ring injection cavity (22) is communicated with the first mixing cavity (50) to form a mixing channel of a spiral structure.

5. The upper intake air type burner with a gas-distributing premixing structure as claimed in claim 4, wherein: the joint (60) of the outer ring injection cavity (22) and the first mixing cavity (50) is of a long-strip groove structure; the long groove is close to the air outlet end of the outer ring injection cavity (22) and is an air outlet starting end (61) of a joint (60), and the air distribution communication hole (31) is not overlapped with the air outlet starting end (61) of the joint (60).

6. The upper intake air type burner with a gas-distributing premixing structure as claimed in claim 4, wherein: the number of the gas distribution communication holes (31) is three, the three gas distribution communication holes (31) are arranged at intervals of 90 degrees and are far away from a joint (60) of the gas outlet end of the outer ring injection cavity (22) and the first mixing cavity (50).

7. The upper intake air type burner with a gas-distributing premixing structure as claimed in claim 2, wherein: the outer ring is penetrated the chamber (22) and is equipped with two, two the outer ring is penetrated the chamber (22) and is central symmetry setting.

8. The upper intake air type burner with a gas-distributing premixing structure as claimed in claim 1, wherein: the outer ring gas distribution seat (21) comprises two outer ring side walls (211) which are concentrically arranged; the outer ring side wall (211) is provided with a concave step structure, and the second air distribution disc (30) can be mounted on the step structure.

9. The upper intake air type burner with a gas-distributing premixing structure as claimed in claim 1, wherein: the first air distribution disc (20) is provided with a limiting column (23); the second air distribution disc (30) is provided with a limiting hole (32) corresponding to the limiting column (23).

10. The upper intake air type burner with a gas-distributing premixing structure as claimed in claim 1, wherein: the first air distribution disc (20) is further provided with an inner ring air distribution seat (24) extending vertically, and an inner ring fire cover (41) is installed on the inner ring air distribution seat (24); and the second air distribution plate (30) is provided with a secondary air supplement groove (33), and the secondary air supplement groove (33) can supplement secondary air to the inner ring air distribution seat (24).