CN219036634U - Self-air-suction concentric ring mixing cavity and combustor - Google Patents

Abstract

The utility model discloses a self-air-suction concentric ring mixing cavity and a burner, wherein the mixing cavity comprises one or more than one group of ring paths, and the ring paths are concentric circles, simulated concentric circles, stripes or a combination of a plurality of stripes; each group of annular channels comprises an inner wall and an outer wall, the inner wall is provided with a plurality of concave arc grooves, the outer wall is provided with a plurality of convex arc grooves, the concave arc grooves and the convex arc grooves are arranged corresponding to the air inlet nozzles, and secondary air channels are arranged between adjacent annular channels. The burner includes an air intake cavity, a fire bore cavity, and a mixing cavity. The top or the lateral part of fire hole chamber is provided with a plurality of fire holes, the chamber of admitting air with be provided with a wind channel between the chamber of mixing, the chamber of admitting air bottom is provided with the gas entry, chamber of admitting air top or upper portion side are provided with a plurality of first gas outlets, set up the air inlet nozzle inside and outside the chamber of admitting air in every first gas outlet. The utility model has the advantages of simpler structure, good integrity, simple manufacture and reduced cost.

Description

Self-air-suction concentric ring mixing cavity and combustor

Technical Field

The utility model relates to the technical field of self-air-suction concentric ring mixing cavities and combustors, in particular to a self-air-suction concentric ring mixing cavity and a combustor.

Background

Common furnace end from induced drafting in market adopts components of a whole that can function independently structure, and a plurality of discrete big fire hole and one or more little fire hole are constituteed, and a plurality of big fire holes encircle the setting around the fire hole, and big fire hole all connects the ring that admits air that is located the bottom, and the subassembly of connecting big fire hole and gas inlet ring is the hybrid chamber, is the open-ended cylinder structure in side lower part generally, and independent air feed of fire hole.

Such burners suffer from the following drawbacks: firstly, ignition is difficult, because each big fire hole is independent, and the distance is far away, and when igniting, usually by the fire hole of fire, other big fire holes are lighted in proper order by it again, and the distance that is far away has caused is difficult to ignite between the big fire hole of adjacent, usually needs put the pan and pushes down the flame to scatter in order to ignite big fire hole, perhaps needs the operating personnel to blow to the flame and make it drift to other fire holes and pilot it, has certain danger.

Secondly, the cost is high, each big fire hole is an independent component, the use amount is large, and the production process is complex. In addition, the gas flow process in the cylindrical mixing cavity is simple, and the mixing effect of the fuel gas and the combustion air is poor.

Accordingly, it is desirable to provide a self-air-suction concentric ring mixing chamber and burner that address the above-described issues.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a self-air-suction concentric ring mixing cavity and a burner, which solve the problems in the prior art.

In order to achieve the above purpose, the utility model provides a self-air-suction concentric ring mixing cavity, which comprises one or more groups of ring paths, wherein the ring paths are concentric circles, simulated concentric circles, stripes or a combination of a plurality of stripes; each group of annular channels comprises an inner wall and an outer wall, the inner wall is provided with a plurality of concave arc grooves, the outer wall is provided with a plurality of convex arc grooves, the concave arc grooves and the convex arc grooves are arranged corresponding to the air inlet nozzles, and secondary air channels are arranged between adjacent annular channels.

Preferably, the inner wall and the outer wall are in structures with large ends and small middle parts, and the inlet section is arranged corresponding to the nozzle.

Preferably, a connecting piece is arranged between adjacent loops.

Preferably, an inclined guide vane is arranged between the inner wall and the outer wall, and the inclined guide vane is used for guiding the mixed gas to go upwards obliquely.

Preferably, the inner wall and the outer wall are provided with inclined guide grooves in a pressing mode.

A burner is also provided, comprising an air inlet cavity, a fire bore cavity and the mixing cavity.

Preferably, a plurality of fire holes are formed in the top or side of the fire hole cavity, a primary air duct is arranged between the air inlet cavity and the mixing cavity, a fuel gas inlet is formed in the bottom of the air inlet cavity, a plurality of first air outlets are formed in the top or side face of the upper portion of the air inlet cavity, and an air inlet nozzle communicated with the inside and the outside of the air inlet cavity is arranged in each first air outlet.

Preferably, the air inlet cavity and the fire cavity are of cylindrical structures.

Preferably, the distribution of the fire holes is arranged corresponding to the air inlet nozzles.

Preferably, the fire hole is a round hole, a strip hole, a regular polygon hole or a strip hole embedded corrugated belt hole.

The utility model has the beneficial effects that:

the utility model provides a self-air-suction concentric ring mixing cavity and a burner, wherein the mixing cavity comprises one or more than one group of ring channels, and the ring channels are concentric circles, simulated concentric circles, stripes or a combination of a plurality of stripes; each group of annular channels comprises an inner wall and an outer wall, the inner wall is provided with a plurality of concave arc grooves, the outer wall is provided with a plurality of convex arc grooves, the concave arc grooves and the convex arc grooves are arranged corresponding to the air inlet nozzles, and secondary air channels are arranged between adjacent annular channels. The structure is simpler, the wholeness is good, and simple manufacture has reduced the cost. The fire holes densely distributed on the fire hole cavities have small intervals, so that the finally sprayed fuel gas participating in combustion is very close, and the flame can be rapidly transferred to all the fire holes, so that the fire can be thoroughly ignited more safely and rapidly. The inner wall and the outer wall of the utility model are of structures with large ends and small middle parts, so that the fuel gas and the combustion air are mixed more fully, and the combustion efficiency is higher.

Drawings

Fig. 1 is a schematic structural view of embodiment 1;

figure 2 is a schematic structural view of embodiment 2,

FIG. 3 is a schematic structural view of embodiment 3;

fig. 4 is a schematic structural view of embodiment 4;

fig. 5 is a schematic structural view of embodiment 5;

fig. 6 is a schematic structural view of embodiment 6;

the device comprises a 10-loop, a 11-inner wall, a 12-outer wall, a 13-concave arc-shaped groove, a 14-convex arc-shaped groove, a 15-nozzle, a 16-connecting piece, a 17-air inlet cavity, a 18-fire hole cavity, a 19-fire hole, a 20-mixing cavity, a 21-primary air duct, a 22-fuel gas inlet and a 23-first air outlet.

Detailed Description

The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.

Referring to fig. 1 to 6, the present utility model provides a self-air-suction concentric ring mixing chamber, the mixing chamber 20 includes one or more groups of ring channels 10, each group of ring channels 10 includes an inner wall 11 and an outer wall 12, the inner wall 11 is provided with a plurality of inner concave arc-shaped grooves 13, the outer wall 12 is provided with a plurality of outer convex arc-shaped grooves 14, the inner concave arc-shaped grooves 13 and the outer convex arc-shaped grooves 14 are arranged corresponding to air inlet nozzles 15, and secondary air channels are arranged between adjacent ring channels 10. The loop 10 is concentric, pseudo-concentric, and a combination of strips and bars.

In one embodiment, the inner wall 11 and the outer wall 12 have a structure with two large ends and a small middle part, and the inlet section is arranged corresponding to the nozzle 15.

In one embodiment, the connecting piece 16 is arranged between the adjacent loops 10, so that the mixing cavity 20 is integrated, and the installation is convenient and the cost is saved.

In one embodiment, an inclined deflector is disposed between the inner wall 11 and the outer wall 12, and is used for guiding the mixture gas obliquely upwards.

In one embodiment, the inner wall 11 and the outer wall 12 are provided with inclined guide grooves in a pressing manner.

There is also provided a burner comprising an air inlet chamber 17, a fire hole chamber 18 and a mixing chamber 20 as described above.

The top or the lateral part of the fire hole cavity 18 is provided with a plurality of fire holes 19, a primary air duct 21 is arranged between the air inlet cavity 17 and the mixing cavity 20, the bottom of the air inlet cavity 17 is provided with a fuel gas inlet 22, the top or the lateral surface of the upper part of the air inlet cavity 17 is provided with a plurality of first air outlets 23, and an air inlet nozzle 15 communicated with the inside and the outside of the air inlet cavity 17 is arranged in each first air outlet 23.

In one embodiment, the air inlet cavity 17 and the fire hole cavity 18 are cylindrical structures.

In one embodiment, the distribution of the fire holes 19 is arranged corresponding to the air intake nozzles 15.

In one embodiment, the fire hole 19 is a round hole, a strip hole, a regular polygon hole or a strip hole embedded with a corrugated strip hole.

The utility model has the beneficial effects that:

the utility model provides a self-air-suction concentric ring mixing cavity and a burner, wherein the mixing cavity 20 comprises one or more groups of annular channels 10, each group of annular channels 10 comprises an inner wall 11 and an outer wall 12, the inner wall 11 is provided with a plurality of inner concave arc grooves 13, the outer wall 12 is provided with a plurality of outer convex arc grooves 14, the inner concave arc grooves 13 and the outer convex arc grooves 14 are arranged corresponding to air inlet nozzles 15, and secondary air channels are arranged between adjacent annular channels 10. The structure is simpler, the wholeness is good, and simple manufacture has reduced the cost. The fire holes 19 densely distributed on the fire hole cavities 18 are small in distance, so that the finally sprayed fuel gas participating in combustion is very close, and the flame can be rapidly transferred to all the fire holes 19, so that the ignition is safer and faster. The inner wall 11 and the outer wall 12 of the utility model have structures with large ends and small middle parts, so that the fuel gas and the combustion air are mixed more fully, and the combustion efficiency is higher.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing is a further detailed description of the utility model in connection with specific embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the utility model.

Claims (10)

1. The self-air-suction concentric ring mixing cavity is characterized by comprising one or more groups of annular channels, wherein the annular channels are concentric circles, simulated concentric circles, stripes or a combination of a plurality of stripes; each group of annular channels comprises an inner wall and an outer wall, the inner wall is provided with a plurality of concave arc grooves, the outer wall is provided with a plurality of convex arc grooves, the concave arc grooves and the convex arc grooves are arranged corresponding to the air inlet nozzles, and secondary air channels are arranged between adjacent annular channels.

2. The self-priming concentric ring mixing chamber of claim 1, wherein the inner wall and the outer wall have a structure with large ends and small middle parts, and the inlet section is arranged corresponding to the nozzle.

3. The self-priming concentric ring mixing chamber of claim 1, wherein a connector is provided between adjacent rings.

4. The self-air-suction concentric ring mixing chamber according to claim 1, wherein an inclined deflector is arranged between the inner wall and the outer wall, and is used for guiding the mixed gas obliquely upwards.

5. The self-priming concentric ring mixing chamber of claim 1, wherein the inner and outer walls are stamped with beveled guide grooves.

6. A burner comprising an air intake chamber, a fire hole chamber and a mixing chamber as claimed in any one of claims 1 to 5.

7. The burner of claim 6, wherein a plurality of fire holes are formed in the top or side of the fire hole cavity, a primary air duct is arranged between the air inlet cavity and the mixing cavity, a fuel gas inlet is formed in the bottom of the air inlet cavity, a plurality of first air outlets are formed in the top or upper side of the air inlet cavity, and an air inlet nozzle communicated with the inside and the outside of the air inlet cavity is arranged in each first air outlet.

8. The burner of claim 7 wherein said air intake chamber and fire chamber are of cylindrical configuration.

9. The burner of claim 7 wherein the distribution of fire holes is arranged corresponding to the air intake nozzles.

10. The burner of claim 9, wherein the fire holes are round holes, bar holes, regular polygonal holes, or bar holes embedded with corrugated tape holes.

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