CN112728537A

CN112728537A - Combustor with enhanced type light fire hole structure

Info

Publication number: CN112728537A
Application number: CN202110116880.9A
Authority: CN
Inventors: 陈光杰
Original assignee: Shanghai Linnei Co ltd
Current assignee: Shanghai Linnei Co ltd; Shanghai Rinnai Co Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-04-30

Abstract

The invention discloses a combustor with an enhanced type light fire hole structure, which comprises a combustor body, wherein a first fire hole plate, a second fire hole plate, a third fire hole plate and a fourth fire hole plate are arranged in the combustor body, and fire holes are respectively formed in the first fire hole plate, the second fire hole plate, the first fire hole plate, the third fire hole plate, the second fire hole plate and the fourth fire hole plate. The third boss and the fourth boss which are different from the first boss and the second boss in direction are added, so that the airflow in each fire hole is well uniform before combustion; and the structure is very compact, and the rectification effect is good. When the design of the mixing part of the burner body changes, the first boss, the second boss, the third boss and the fourth boss can be flexibly changed to correspond to the special-shaped structure, such as certain inclination or arc-shaped formation, and the like, so that the airflow direction is kept vertically upward.

Description

Combustor with enhanced type light fire hole structure

Technical Field

The invention relates to the technical field of combustors, in particular to a combustor with an enhanced type light fire hole structure.

Background

The gas burner is a key part of a gas water heater and a gas wall-mounted furnace, and heats a medium in a mode of mixing and then burning gas and air.

In the prior art, as shown in fig. 1: a classic shade type low nitrogen oxide burner structure. The burner is composed of an inner shell 1, a fire hole plate 2 installed inside the inner shell 1, and an outer shell 3 installed outside the inner shell 1. The mixed gas of the fuel gas and the air flows out after being mixed in the combustor to form stable flame in the combustion chamber. The gas flowing through the inner shell 1 is low in concentration and is called a light side 4; the gas flowing between the inner shell 1 and the outer shell 3 is relatively rich, referred to as the rich side 5. Accordingly, the combustion fire holes are respectively called as a light fire hole and a strong fire hole.

As shown in fig. 2-5: the fire hole of light survey comprises four layers of vertical metal sheets, and the four layers of metal sheets are respectively marked as a first fire hole plate 6, a second fire hole plate 7, a third fire hole plate 8 and a fourth fire hole plate 9. Wherein the first fire hole plate 6 and the second fire hole plate 7 form a first fire hole 10; the first fire hole plate 6 and the third fire hole plate 8, and the second fire hole plate 7 and the fourth fire hole plate 9 constitute a second fire hole 11 and a third fire hole 12, respectively. The inner shell 1 of the burner, the third fire hole plate 8 and the fourth fire hole plate 9 respectively form a backflow zone 13 at a position below a fire hole outlet, the burner shell is provided with two symmetrical concave platforms, the top surface of each platform is respectively in close contact with the third fire hole plate 8 and the fourth fire hole plate 9, the backflow zone 13 is sealed, and upstream airflow cannot flow into the backflow zone 13 from the position. In addition, corresponding grooves 14 are arranged at the outlet positions of the fire hole plates and are contacted with each other in a mirror symmetry mode, so that the first fire holes 10, the second fire holes 11 and the third fire holes 12 are divided into a plurality of independent fire holes.

As shown in fig. 4-5, a plurality of first bosses 15 and second bosses 16 facing the flow channels of the first fire hole 10 are respectively arranged on the first fire hole plate 6 and the second fire hole plate 7, the top ends of the two symmetrical first bosses 15 and the second bosses 16 are in close contact to form a rectifying part, and a group of rectifying parts are arranged in each independent fire hole.

The structure has the defect that along with the continuous reduction of the height of the burner, the flow direction of the gas entering the fire holes after mixing deflects, particularly the second fire holes 11 and the third fire holes 12 lack a secondary rectification structure to cause more serious deflection of the gas flow, and finally, the flame is distorted and deflected to influence the performance indexes such as emission, noise and the like. Therefore, a reasonable structure is needed for secondary rectification to ensure that the flame direction is vertically upward.

The person skilled in the art is dedicated to solving the above technical drawbacks.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, a technical object of the present invention is to solve the problems mentioned in the above-mentioned background art.

In order to achieve the technical purpose, the invention provides a burner with an enhanced type light fire hole structure, which comprises a burner body, wherein a first fire hole plate, a second fire hole plate, a third fire hole plate and a fourth fire hole plate are arranged in the burner body, the first fire hole plate, the second fire hole plate and the fourth fire hole plate respectively form fire holes, a plurality of first bosses and a plurality of second bosses are respectively arranged on the first fire hole plate and the second fire hole plate, a plurality of third bosses and a plurality of fourth bosses are also arranged on the first fire hole plate and the second fire hole plate, the first bosses, the second bosses, the third bosses and the fourth bosses are respectively arranged in each fire hole, and the directions of the third bosses and the fourth bosses are respectively opposite to the directions of the first bosses and the second bosses, the top ends of the third boss and the fourth boss are respectively attached to the inner surfaces of the third fire hole plate and the fourth fire hole plate, and the heights of the third boss and the fourth boss are respectively higher than those of the first boss and the second boss.

Preferably, in every fire hole first boss with the second boss is provided with two sets ofly respectively, the third boss with the fourth boss is provided with three sets ofly respectively, and is two sets ofly first boss is in three sets of the distance center department of third boss, and is two sets of the second boss is in three sets the distance center department of fourth boss, interval between the first boss with interval between the second boss equals respectively, interval between the third boss with interval between the second boss equals respectively.

Preferably, each fire hole is internally provided with three groups of the first bosses and the second bosses respectively, the third bosses and the fourth bosses are respectively provided with two groups of the third bosses, the two groups of the third bosses are positioned at the distance centers of the three groups of the first bosses, and the two groups of the fourth bosses are positioned at the distance centers of the three groups of the second bosses.

The invention has the beneficial effects that:

due to the structural design, the third boss and the fourth boss which are different from the first boss and the second boss in direction are added, so that the airflow in each fire hole is well uniform before combustion; and the structure is very compact, and the rectification effect is good.

When the design of the mixing part of the burner body changes, the first boss, the second boss, the third boss and the fourth boss can be flexibly changed to correspond to the special-shaped structure, such as certain inclination or arc-shaped formation, and the like, so that the airflow direction is kept vertically upward.

Drawings

FIG. 1 is a schematic view of the overall structure of a prior art burner;

FIG. 2 is a schematic view of the first, second, third and fourth fire orifice plates of FIG. 1 assembled together;

FIG. 3 is a schematic view of the structure of the burner head of FIG. 1;

FIG. 4 is a schematic view of the first fire aperture plate of FIG. 1;

FIG. 5 is a schematic view of the second fire hole plate of FIG. 1;

FIG. 6 is a schematic view of the structure of a first fire hole plate in the first embodiment of the present invention;

FIG. 7 is a schematic view of the first, second, third and fourth fire aperture plates of the first embodiment of the invention after deployment;

FIG. 8 is a schematic view of a first fire aperture plate according to a second embodiment of the invention;

FIG. 9 is a schematic expanded view of the fire hole plate, the second fire hole plate, the third fire hole plate and the fourth fire hole plate of the second embodiment of the present invention.

In the figure: 1 inner shell, 2 fire orifice plates, 3 outer shells, 4 light sides, 5 thick sides, 6 first fire orifice plates, 7 second fire orifice plates, 8 third fire orifice plates, 9 fourth fire orifice plates, 10 first fire orifices, 11 second fire orifices, 12 third fire orifices, 13 backflow zones, 14 grooves, 15 first bosses, 16 second bosses, 17 third bosses and 18 fourth bosses.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Example 1:

as shown in fig. 6-7, a burner with an enhanced type light fire hole structure comprises a burner body, wherein a first fire hole plate 6, a second fire hole plate 7, a third fire hole plate 8 and a fourth fire hole plate 9 are arranged in the burner body.

The first fire hole plate 6, the second fire hole plate 7, the first fire hole plate 6, the third fire hole plate 8, the second fire hole plate 7 and the fourth fire hole plate 9 respectively form fire holes.

The first fire hole plate 6 and the second fire hole plate 7 are respectively provided with a plurality of first bosses 15 and second bosses 16, and the first fire hole plate 6 and the second fire hole plate 7 are also provided with a plurality of third bosses 17 and fourth bosses 18.

A first boss 15, a second boss 16, a third boss 17 and a fourth boss 18 are located in each fire hole, respectively.

The third boss 17 and the fourth boss 18 are opposite in direction to the first boss 15 and the second boss 16, respectively.

The top ends of the first boss 15 and the fourth boss 18 are respectively attached to the inner surfaces of the third fire hole plate 8 and the fourth fire hole plate 9, and the heights of the first boss 15 and the fourth boss 18 are respectively higher than the heights of the third boss 17 and the second boss 16.

Specifically, three groups of first bosses 15 and three groups of second bosses 16 are arranged in each fire hole respectively, two groups of third bosses 17 and two groups of fourth bosses 18 are arranged respectively, two groups of third bosses 17 are located at the distance centers of the three groups of first bosses 15, and two groups of fourth bosses 18 are located at the distance centers of the three groups of second bosses 16.

Specifically, the fire holes formed by the first fire hole plate 6, the second fire hole plate 7, the third fire hole plate 8 and the fourth fire hole plate 9 are formed by punching, bending, blanking, shaping and other processes on a piece of material.

Example 2:

as shown in fig. 8-9, a combustor with an enhanced type light fire hole structure comprises a combustor body, wherein a first fire hole plate 6, a second fire hole plate 7, a third fire hole plate 8 and a fourth fire hole plate 9 are arranged in the combustor body, and fire holes are respectively formed in the first fire hole plate 6, the second fire hole plate 7, the first fire hole plate 6, the third fire hole plate 8, the second fire hole plate 7 and the fourth fire hole plate 9.

The first fire hole plate 6 and the second fire hole plate 7 are respectively provided with a plurality of first bosses 15 and second bosses 16.

The first fire hole plate 6 and the second fire hole plate 7 are also provided with a plurality of third bosses 17 and fourth bosses 18.

The third boss 17 and the fourth boss 18 are opposite to the first boss 15 and the second boss 16 in direction respectively, the top ends of the third boss 17 and the fourth boss 18 are attached to the inner surfaces of the third fire hole plate 8 and the fourth fire hole plate 9 respectively, and the heights of the third boss 17 and the fourth boss 18 are higher than the heights of the first boss 15 and the second boss 16 respectively.

Specifically, two sets of the first bosses 15 and the second bosses 16 are provided in each fire hole, and three sets of the third bosses 17 and the fourth bosses 18 are provided in each fire hole.

The two sets of first bosses 15 are at the distance centre of the three sets of third bosses 17. The two sets of second bosses 16 are at the center of the three sets of fourth bosses 18.

The pitch between the first bosses 15 and the pitch between the second bosses 16 are equal, respectively, and the pitch between the third bosses 17 and the pitch between the second bosses 18 are equal, respectively.

When the design of the mixing part of the burner body changes, the first boss, the second boss, the third boss and the fourth boss can be flexibly changed, the bosses can be designed into special-shaped structures, and if the bosses can have a certain inclination or form an arc shape and the like, other schemes are adopted to correspond, so that the airflow direction is kept vertically upward.

The distance between the top of the boss and the fire hole outlet should be a certain distance, such as more than 3 mm.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a take combustor of light fire hole structure of enhancement mode, includes the combustor body, its characterized in that: a first fire orifice plate (6), a second fire orifice plate (7), a third fire orifice plate (8) and a fourth fire orifice plate (9) are arranged in the burner body;

the first fire hole plate (6) and the second fire hole plate (7), the first fire hole plate (6) and the third fire hole plate (8), the second fire hole plate (7) and the fourth fire hole plate (9) are respectively provided with fire holes;

the first fire hole plate (6) and the second fire hole plate (7) are respectively provided with a plurality of first bosses (15) and second bosses (16);

the first fire hole plate (6) and the second fire hole plate (7) are also provided with a plurality of third bosses (17) and fourth bosses (18);

the first boss (15), the second boss (16), the third boss (17) and the fourth boss (18) are respectively positioned in each fire hole;

the third boss (17) and the fourth boss (18) are in opposite directions to the first boss (15) and the second boss (16), respectively;

the top ends of the third boss (17) and the fourth boss (18) are respectively attached to the inner surfaces of the third fire hole plate (8) and the fourth fire hole plate (9);

the third boss (17) and the fourth boss (18) have heights that are higher than the heights of the first boss (15) and the second boss (16), respectively.

2. The burner with enhanced thin fire hole structure according to claim 1, wherein: two groups of first bosses (15) and two groups of second bosses (16) are respectively arranged in each fire hole;

three groups of third bosses (17) and three groups of fourth bosses (18) are respectively arranged;

two sets of the first bosses (15) are located at the distance center of three sets of the third bosses (17);

two sets of said second bosses (16) are at the distance center of three sets of said fourth bosses (18);

the distance between the first bosses (15) is equal to the distance between the second bosses (16), and the distance between the third bosses (17) is equal to the distance between the second bosses (18).

3. The burner with enhanced thin fire hole structure according to claim 1, wherein: three groups of first bosses (15) and three groups of second bosses (16) are respectively arranged in each fire hole;

the third boss (17) and the fourth boss (18) are respectively provided with two groups;

the two groups of third bosses (17) are positioned at the distance centers of the three groups of first bosses (16), and the two groups of fourth bosses (18) are positioned at the distance centers of the three groups of second bosses (16).