CN209991452U

CN209991452U - A kind of burner

Info

Publication number: CN209991452U
Application number: CN201920197497.9U
Authority: CN
Inventors: 吴桂安; 李志敏; 朱莲宗; 邓飞忠; 仇明贵; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2019-02-14
Filing date: 2019-02-14
Publication date: 2020-01-24
Anticipated expiration: 2029-02-14

Abstract

The utility model discloses a combustor, arrange including a plurality of firerows that set up side by side, the firerow is including fire row casing and fire hole inner core, fire row casing is equipped with the gas runner that supplies the gas circulation, fire hole inner core fixed connection be in the exit of gas runner, wherein the top surface of fire hole inner core is provided with main fire hole and its both sides face and is equipped with the biography fire hole, main fire hole is including the main fire hole of first main fire hole and the main fire hole of second that separate each other, first main fire hole with the main fire hole staggered arrangement of second. The utility model has the advantages of it is following: 1. the staggered main fire holes are formed in the top of the fire hole inner core, so that stable and reliable fire transfer among the main fire holes is guaranteed; 2. the utility model discloses set up in the side of fire hole inner core and pass the fire hole and pass the fire piece, under passing the fire hole and passing fire piece synergism, the flame transmission between each fire row is more even, continuous, has improved the flame stability and the reliability of combustor, can not influence the fume emission index of combustor simultaneously.

Description

A kind of burner

Technical Field

The utility model relates to a combustor technical field especially relates to a combustor suitable for gas heater and gas heating stove.

Background

The burner is one of the key parts of gas water heater and gas heating furnace, mainly to promote the contact and mixing of fuel and air and the place where the violent heat releasing reaction occurs, and is the important part for releasing the potential energy of fuel. The stability of the combustion condition of the burner directly affects important indexes of the system, such as heat efficiency, hot water yield, flue gas emission index and the like. The flame stability of a burner assembly assembled by a plurality of burners in a single piece is an important factor influencing whether the combustion system can work normally or not.

At present, the kind of combustor on the market is more, and its fire hole structure is arranged for the main with strip seam type array more, passes fire between different combustor monolithic and mainly realizes through passing fire piece structure setting, but this combustor structure can have following not enough:

(1) the single slit type fire hole structure arranged in an array mode easily causes poor fire transmission among different fire holes due to uneven air pressure in a local area because the areas of the single fire holes are the same and the single fire holes are influenced by an air flow channel;

(2) the single fire transfer piece structure mode is adopted to transfer fire among different combustor monoliths, and the problem that poor fire transfer under cold condition and incapability of transferring fire when the air inlet pressure is lower can appear.

(3) When the system is in poor fire conduction, unstable fluctuation of heat release rate is easily caused, system combustion shock is caused, and poor use experience is brought to users.

Disclosure of Invention

The utility model aims at providing a combustor for to prior art current situation, its biography fire is stable, reliable, has promoted combustion system's flame stability, has solved effectively because of passing the combustion oscillation that the fire is bad and produce.

According to the utility model discloses a purpose provides a combustor, arrange including a plurality of firerows that set up side by side, the firerow is including fire row casing and fire hole inner core, the fire row casing is equipped with the gas runner that supplies the gas circulation, fire hole inner core fixed connection be in the exit of gas runner, wherein the top surface of fire hole inner core is provided with main fire hole and its both sides face is equipped with the biography fire hole, main fire hole is including the first main fire hole and the main fire hole of second at interval each other, first main fire hole with the staggered arrangement in second main fire hole.

In some embodiments, the length of the first main fire holes is smaller than that of the second main fire holes, the number of the first main fire holes is at least a plurality, and every two first main fire holes are arranged on two opposite sides of the top surface of the fire hole inner core and form a fire hole group.

In some embodiments, the outer side of the fire hole inner core is provided with a fire transfer piece which extends outwards and is used for stabilizing flame.

In some embodiments, the number of the fire transmitting pieces is four, and the fire transmitting pieces are arranged at two ends of two opposite side surfaces of the fire hole inner core in a group.

In some embodiments, the fire grate housing comprises a first fire grate housing and a second fire grate housing, which are arranged opposite to each other, the first fire grate housing is formed with a first flow passage through stamping, the second fire grate housing is formed with a second flow passage opposite to the first flow passage through stamping, the first fire grate housing and the second fire grate housing are in close fit and snap connection, and the first flow passage and the second flow passage enclose to form the fuel gas flow passage.

In some embodiments, the gas flow passage comprises a convergent tube for gas entry, a throat and a diffuser tube for gas exit, the throat being disposed between the convergent tube and the diffuser tube.

In some embodiments, the fire grate housing is made of a stainless steel material.

In some embodiments, the gas flow passage further comprises a hollow box body, a side wall of the box body is provided with a plurality of through holes for air to flow through and spaced from each other, the number of the through holes corresponds to the number of the fire rows one to one, the fire rows are installed in the box body side by side, and the inlets of the gas flow passage are communicated with the through holes.

In some embodiments, the top of box is equipped with the mount that extends inwards, the mount be provided with the fire arrange the draw-in groove of the edge cooperation joint of casing, the edge of fire arrange the casing is embedded into in the draw-in groove.

In some embodiments, the fire grate housing is provided with an outwardly extending flange at an end facing away from the inlet of the gas flow channel, and the box body is provided with an opening at a side wall opposite to the through hole through which the flange passes, the flange being visible through the opening.

Compared with the prior art, the utility model, following beneficial effect has:

1. the staggered main fire holes are formed in the top of the fire hole inner core, so that the problem of poor fire transmission among different main fire holes due to uneven pressure and low pressure of the fire hole surface is effectively solved, and the stable and reliable fire transmission among the main fire holes is ensured;

2. the utility model discloses set up in the side of fire hole inner core and pass the fire hole and pass the fire piece, under passing the fire hole and passing fire piece synergism, the flame transmission between each fire row is more even, continuous, has improved the flame stability and the reliability of combustor, can not influence the fume emission index of combustor simultaneously.

Drawings

FIG. 1 is an exploded view of the burner of the present invention;

FIG. 2 is a top view of the burner of FIG. 1 after assembly;

FIG. 3 is a schematic view of the fire grate of FIG. 1;

FIG. 4 is a top view of the fire row of FIG. 3;

fig. 5 is a partially enlarged view of a portion a in fig. 4.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present invention.

As shown in fig. 1 to 5, the burner of the present embodiment includes a plurality of fire rows 1 and a hollow case 2, and the fire rows 1 are installed adjacent to each other in the case 2. The fire grate 1 comprises a fire grate shell 11 and a fire hole inner core 12, wherein the fire grate shell 11 is provided with a fuel gas flow channel 110 for fuel gas to flow through, the fire hole inner core 12 is fixedly connected at an outlet of the fuel gas flow channel 110, a main fire hole 121 is arranged on the top surface of the fire hole inner core 12, fire transfer holes 122 are arranged on two side surfaces of the fire hole inner core 12, the main fire hole 121 comprises a first main fire hole 121A and a second main fire hole 121B, and the first main fire hole 121A and the second main fire hole 121B are arranged at intervals in a staggered mode. Furthermore, the top surface of the fire hole inner core 12 is provided with a plurality of first main fire holes 121A and second main fire holes 121B which are staggered with each other, so that the abnormal problems of uneven fire hole surface pressure and low pressure caused by the influence of the gas flow channel 110 can be solved, and the stable and reliable fire transfer between the first main fire holes 121A and the second main fire holes 121B is ensured.

Further, the number of the fire holes 122 is a plurality of, and a plurality of fire holes 122 are arranged at two sides of the fire hole inner core 12 at intervals, and are synchronously ignited when the main fire hole 121 fires, so that flame transmission among the fire rows 1 can be better realized, the fire transmission stability of the combustion system is ensured, and the user experience is improved. Preferably, the number of the fire holes 122 is six, and two fire holes are arranged on two sides of the fire hole inner core 12 at intervals, so that the flame transmission between the fire rows 1 is uniform and connected.

As shown in fig. 4 to 5, preferably, the length of the first main fire holes 121A is smaller than that of the second main fire holes 121B, the number of the first main fire holes 121A is at least plural, and every two first main fire holes 121A are disposed on opposite sides of the top surface of the fire hole core 12 and form a fire hole group. Specifically, the fire hole groups and the second main fire holes 121B are arranged in a staggered manner, so that the main fire holes 121 are in a staggered arrangement structure of long main fire holes and short main fire holes, the total area of the fire holes is increased, flame transmission among the fire holes is facilitated, and the flame uniformity and the stability of the fire row are high.

Further, a flame-transmitting piece 123 extending outward and used for flame stabilization is provided on the outer side surface of the fire hole core 12. Preferably, the number of the fire transmitting pieces 123 is four, and two fire transmitting pieces 123 are arranged at two ends of two opposite side surfaces of the fire hole core 12. Therefore, the problem of unstable fire power can be solved, the combustion heat intensity of the combustor is improved, and the problem that the flue gas emission index of the combustor is blocked due to the fact that the number of the fire transfer pieces 123 is too large can be avoided.

In other embodiments, the number of the fire transmitting pieces 123 may be two, and the two fire transmitting pieces 123 are staggered at the end parts of the two opposite outer side surfaces, so that the fire transmitting stability between the fire rows 1 is not affected, the number of the fire transmitting pieces 123 is reduced, the processing procedure is simplified, and the production cost is reduced.

Further, the fire grate housing 11 includes a first fire grate housing 111 and a second fire grate housing 112 (as shown in fig. 4) which are disposed opposite to each other, the first fire grate housing 111 is formed with a first flow channel which is recessed outwards by stamping, the second fire grate housing 112 is formed with a second flow channel which is opposite to the first flow channel by stamping, the first fire grate housing 111 and the second fire grate housing 112 are closely and tightly buckled and connected, and the first flow channel and the second flow channel enclose to form a fuel gas flow channel 110. Preferably, the fire hole inner core 12 is fixed at the outlet of the gas flow channel 110 by spot welding, that is, the fire hole inner core 12 is fixedly connected with the opposite side walls of the first fire grate outer shell 111 and the second fire grate outer shell 112 by welding, so that once the fire hole inner core 12 has a problem and needs to be replaced, only the fire hole inner core 12 needs to be replaced, the whole fire grate 1 does not need to be replaced, and the later maintenance cost of the burner is reduced. In other embodiments, the fire hole core 12 may be integrally formed with the outlet of the gas flow channel 110 to simplify the manufacturing process.

Further, the gas flow passage 110 includes a contraction pipe 110A for gas to enter, a throat pipe 110B and a diffuser pipe 110C for gas to flow out, and the throat pipe 110B is disposed between the contraction pipe 110A and the diffuser pipe 110C (as shown in fig. 3), so that the gas and the air can be mixed sufficiently and flow out from the main fire hole 121 and the fire transfer hole 122 at a certain flow rate, thereby ensuring that the burner burns sufficiently and stably.

Preferably, the fire row housing 11 is made of stainless steel material, i.e. the first fire row housing 111 and the second fire row housing 112 are made of stainless steel material, respectively.

As shown in fig. 1-2, a through hole 21 is further provided on a side wall of the case 2 for air to flow through, and the through hole 21 is communicated with an inlet of the gas flow channel 110 of the fire grate 1, so that when gas is injected into the gas flow channel 110, air is driven to flow into the gas flow channel 110 from the through hole 21 and is uniformly mixed with the gas. Specifically, the number of the through holes 21 is arranged in one-to-one correspondence with the number and positions of the fire rows 1, so that the gas and the air in the gas flow passage 110 of each fire row 1 are uniformly mixed.

Further, the top of box 2 is equipped with the mount 22 that extends inwards, and mount 22 is provided with the draw-in groove 221 that cooperatees the joint with the border of fire grate casing 11, and the border of fire grate casing 11 is embedded into in the draw-in groove 221. The inner wall of the box body 2 is provided with a bracket 20 which extends inwards and is used for supporting the fire grate 1, and the bracket 20 is parallel to the fixed frame 22 and is provided with a groove 201. Specifically, the clamping grooves 221 are located right above the grooves 201 and are parallel to the center lines of the grooves 201, and the number of the clamping grooves 221 and the number of the grooves 201 are respectively equal to the number of the fire rows 1. During installation, the fire grate 1 is installed in the box body 2 from bottom to top, one end of the fire grate shell 11, which is away from an inlet of the gas flow channel 110, extends into a position between the support 20 and the fixed frame 22, the upper end of the edge of the fire grate shell 11 is embedded into the clamping groove 221 of the fixed frame 22 when the fire grate shell is installed in place, the lower end of the edge of the fire grate shell 11 is embedded into the groove 201 and is supported by the support 20, and the inlet of the gas flow channel 110 of the fire grate 1 is opposite to the through hole 21.

Further, the fire row shell 11 is provided with a convex edge 112A extending outwards in the middle of one end facing away from the inlet of the fuel gas flow channel 110, the box body 2 is provided with an opening 23 on the side wall opposite to the through hole 21 for the convex edge 112A to pass through, and the convex edge 112A can be seen through the opening 23. Preferably, the number of the openings 23 is equal to the number of the fire rows 1, and the positions thereof are arranged in one-to-one correspondence with the convex edges 112A, so that the fire rows 1 are more stably installed. Specifically, the flange 112A is disposed at a lateral edge of the second fire row housing 112 along a middle portion and is integrally formed with the second fire row housing 112.

Specifically, a baffle plate 24 is arranged at the top of the box body 2, and the baffle plate 24 is fixedly connected to one end of the top of the box body 2 close to the through hole 21 and used for supporting the fire grate 1 when the burner is in the right position and playing a role in controlling wind.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A burner comprises a plurality of fire banks (1) arranged side by side, wherein each fire bank (1) comprises a fire bank shell (11) and a fire hole inner core (12), the fire bank shell (11) is provided with a gas flow channel (110) for gas to circulate, and the fire hole inner cores (12) are fixedly connected at the outlet of the gas flow channel (110), the burner is characterized in that a main fire hole (121) is arranged on the top surface of the fire hole inner core (12) and two side surfaces of the fire hole inner core are provided with fire transmission holes (122), the main fire hole (121) comprises a first main fire hole (121A) and a second main fire hole (121B) which are spaced from each other, and the first main fire hole (121A) and the second main fire hole (121B) are arranged in a staggered mode.

2. A burner as in claim 1, wherein the length of the first main fire holes (121A) is smaller than the length of the second main fire holes (121B), the number of the first main fire holes (121A) is at least plural, and every two first main fire holes (121A) are disposed on opposite sides of the top surface of the fire hole core (12) and form a fire hole group.

3. A burner as claimed in claim 1, characterised in that the outer side of said fire hole core (12) is provided with fire-transfer fins (123) extending outwards for flame-holding.

4. A burner as claimed in claim 3, wherein said fire transmitting plates (123) are four in number, and said fire transmitting plates (123) are arranged in pairs at both ends of opposite sides of said fire hole core (12).

5. A burner as claimed in claim 1, wherein the fire grate housing (11) comprises a first fire grate housing (111) and a second fire grate housing (112) which are arranged opposite to each other, the first fire grate housing (111) is formed with a first flow passage by stamping, the second fire grate housing (112) is formed with a second flow passage opposite to the first flow passage by stamping, the first fire grate housing (111) and the second fire grate housing (112) are in close fitting connection, and the first flow passage and the second flow passage enclose to form the gas flow passage (110).

6. A burner as claimed in claim 1 or 5, wherein said gas flow channel (110) comprises a converging tube (110A) for the entry of gas, a throat (110B) and a diffuser tube (110C) for the exit of gas, said throat (110B) being arranged between said converging tube (110A) and said diffuser tube (110C).

7. A burner as claimed in claim 1, characterised in that said fire-grate housing (11) is made of stainless steel material.

8. A burner as claimed in claim 1, further comprising a hollow case (2), a side wall of said case (2) being provided with a plurality of through holes (21) through which air flows and which are spaced apart from each other, the number of said through holes (21) corresponding one-to-one to the number of said fire rows (1), a plurality of said fire rows (1) being installed side by side in said case (2) and an inlet of said gas flow channel (110) being in communication with said through holes (21).

9. A burner as claimed in claim 8, characterized in that the top of the box body (2) is provided with an inwardly extending fixing frame (22), the fixing frame (22) is provided with a clamping groove (221) which is matched and clamped with the edge of the fire grate housing (11), and the edge of the fire grate housing (11) is embedded into the clamping groove (221).

10. A burner as claimed in claim 8, characterized in that the fire row housing (11) is provided with an outwardly extending collar (112A) at the end facing away from the inlet of the gas flow channel (110), the box (2) being provided with an opening (23) at the side wall opposite the through hole (21) for the collar (112A) to pass through, the collar (112A) being visible through the opening (23).