CN220567227U

CN220567227U - Burner and gas appliance

Info

Publication number: CN220567227U
Application number: CN202322039944.7U
Authority: CN
Inventors: 陈文风; 黄官贤; 王金; 熊晓俊
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-03-08
Anticipated expiration: 2033-07-28

Abstract

The utility model discloses a combustor and a gas device. The burner comprises a shell and a fire grate assembly, wherein the shell is provided with an air inlet which is used for being matched with the fan; the fire row component is arranged in the shell, one side of the fire row component facing the air inlet is provided with a flow guide convex hull, and the flow guide convex hull and the air inlet are arranged oppositely so as to be used for guiding air flow around the flow guide convex hull. The burner of the technical scheme of the utility model can reduce the rebound of the air inlet flow, reduce wind resistance, ensure the air inlet efficiency and improve the combustion efficiency of the burner.

Description

Burner and gas appliance

Technical Field

The utility model relates to the technical field of gas equipment, in particular to a combustor and gas equipment.

Background

The burner is a core component of the gas plant. In the related art, a combustor internal component is arranged in a shell of the combustor, an air inlet is formed in the shell, and air is provided for the interior of the shell from the air inlet through a fan; the gas nozzle sprays gas to jet air into the fire grate assembly, and then sprays and burns at the fire outlet.

However, when air enters the shell from the air inlet, the air is easy to collide with the fire exhaust component and rebound, so that the air inlet resistance is increased, and the combustion efficiency is affected.

Disclosure of Invention

The utility model mainly aims to provide a combustor, which aims to reduce air inlet resistance, ensure air inlet efficiency and improve combustion efficiency.

To achieve the above object, the present utility model provides a burner comprising:

the shell is provided with an air inlet which is used for being matched with the fan; and

the fire row assembly is arranged in the shell, a flow guide convex hull is arranged on one side, facing the air inlet, of the fire row assembly, and the flow guide convex hull and the air inlet are arranged oppositely and used for guiding air to the periphery of the flow guide convex hull.

In one embodiment of the present application, the fire grate assembly comprises:

the support is arranged on the shell, the inner cavity of the shell is divided into a first cavity and a second cavity, the first cavity is communicated with the air inlet, and the flow guide convex hull is arranged on one side, facing the first cavity, of the support; and

the fire row body is arranged on the bracket and is positioned in the second cavity.

In an embodiment of the present application, the burner further includes a gas nozzle disposed in the first cavity, the fire grate body is provided with an injection channel and a secondary air channel, and the injection channel is provided with an injection port opposite to the gas nozzle;

the bracket comprises:

the first air inlet plate is arranged on one side of the fire grate body, provided with the injection port, and is provided with a first air flow hole communicated with the injection port and the first cavity; and

the second air inlet plate is connected with the first air inlet plate in an included angle and positioned between the fire grate body and the air inlet, and is provided with a second air flow hole which is communicated with the secondary air channel and the first cavity; the flow guide convex hulls are arranged at the positions of the second air inlet plates, which are opposite to the air inlet.

In an embodiment of the present application, the flow guiding convex hull and the second air inlet plate are of an integral structure; and/or the second air inlet plate and the first air inlet plate are of an integrated structure.

In an embodiment of the present application, the flow guiding convex hull is formed by the second air inlet plate towards the air inlet in a pressing and protruding manner.

In an embodiment of the present application, the radial dimension of the guiding convex hull is greater than the radial dimension of the air inlet.

In an embodiment of the present application, the flow guiding convex hull is a spherical convex hull.

In an embodiment of the present application, the flow guiding convex hull is a trapezoid convex hull.

In an embodiment of the present application, the air inlet is formed in the bottom of the housing, and the flow guiding convex hull is formed in the bottom of the fire grate assembly.

In order to achieve the above purpose, the present application further provides a gas device, which comprises a fan and the burner, wherein the fan is assembled at an air inlet of the burner; the burner comprises:

the shell is provided with an air inlet; and

According to the burner disclosed by the technical scheme of the utility model, the shell is provided with the air inlet, and the air flow entering from the air inlet is firstly contacted with the wall surface of the air flow convex hull by arranging the air flow convex hull on one side of the fire row component, which faces the air inlet, and the air flow convex hull is opposite to the air inlet, so that the air flow can flow to the periphery under the flow guiding effect of the air flow convex hull, the air flow rebound can be reduced, the wind resistance is reduced, the air inlet efficiency is ensured, and the combustion efficiency of the burner is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a burner according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of K-K of FIG. 1;

FIG. 3 is a schematic view of an embodiment of a stent and a convex hull according to the present utility model;

FIG. 4 is a bottom view of the embodiment of FIG. 3;

FIG. 5 is a full cross-sectional view of the embodiment of FIG. 3;

FIG. 6 is a schematic view of another embodiment of the stent and the deflector skirt according to the present utility model;

FIG. 7 is a bottom view of the embodiment of FIG. 6;

fig. 8 is a full cross-sectional view of the embodiment of fig. 6.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Shell body	222	Second air inlet plate
101	Air inlet	222a	Second air flow hole
				210	Fire grate body	223	Mounting plate
211	Injection channel	224	First flanging
				211a	Injection port	225	Second flanging
220	Support frame	230	Flow guide convex hull
				221	First air inlet plate	300	Gas nozzle
221a	First air flow hole

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a combustor, which aims to guide the inlet air flow by arranging a guide convex hull at a position opposite to an air inlet, reduce wind power rebound, reduce air inlet resistance, ensure air inlet efficiency and improve combustion efficiency.

In an embodiment of the present utility model, as shown in fig. 1 and 2, the burner includes a housing 100 and a fire grate assembly.

The shell 100 is provided with an air inlet 101, and the air inlet 101 is used for being matched with the fan; the fire row assembly is disposed in the housing 100, and a flow guiding convex hull 230 is disposed on a side of the fire row assembly facing the air inlet 101, and the flow guiding convex hull 230 is disposed opposite to the air inlet 101, so as to guide the airflow to the periphery of the flow guiding convex hull 230.

It will be appreciated that the housing 100 defines a cavity therein, the air inlet 101 is in communication with the cavity, external air is introduced into the housing 100 through the air inlet 101 by fan driving, the fire grate assembly is disposed within the housing 100, and air from the air inlet 101 is capable of providing a supply for combustion of the fire grate assembly. In practical application, because the fan drives air to have certain airflow impact force when entering from the air inlet 101, when the air inflow impacts the fire exhaust component, the wall of the fire exhaust component is easy to rebound against the airflow, so that larger wind rebound resistance is caused.

It should be noted that, the specific position of the flow guiding convex hull 230 in this embodiment is determined according to the position of the air inlet 101 of the casing 100, when the air inlet 101 is disposed at the bottom wall or the side wall of the casing 100, the flow guiding convex hull 230 is correspondingly disposed at the bottom or the side of the fire grate assembly, so that the flow guiding convex hull 230 can be opposite to the air inlet 101, thereby playing a better role in guiding and diverting the air flow. It can be appreciated that the guide convex hull 230 is opposite to the air inlet 101, and the guide convex hull 230 may be opposite to the air inlet 101 in a partial dislocation manner, or the guide convex hull 230 is opposite to the air inlet 101. In practical application, the guide convex hull 230 and the air inlet 101 can be selected to be opposite to each other in consideration of better guide and diversion effects on the air inlet, so that better guide effects can be generated on the air flow with stronger wind power vertically incident from the air inlet 101.

It can be appreciated that the specific shape and structure of the flow guiding convex hull 230 may be according to practical situations, for example, may be "V" shape, circular arc shape, spherical shape, trapezoid shape, or other shapes, and the shape of the flow guiding convex hull 230 may not be limited herein, so long as the flow guiding and splitting effect can be achieved on the intake air flow.

In the burner of the technical scheme of the utility model, the shell 100 is provided with the air inlet 101, and the air flow guiding convex hull 230 is arranged on one side of the fire row component, which faces the air inlet 101, and the air guiding convex hull 230 is arranged opposite to the air inlet 101, so that the air inlet flow entering from the air inlet 101 is firstly contacted with the wall surface of the air guiding convex hull 230 and can flow to the periphery under the guiding action of the air guiding convex hull 230, thereby reducing the air flow rebound, reducing the wind resistance, ensuring the air inlet efficiency and improving the combustion efficiency of the burner.

In an embodiment of the present application, referring to fig. 1 and 2, the fire grate assembly includes a support 220 and a fire grate body 210, where the support 220 is mounted on the housing 100 and divides an inner cavity of the housing 100 into a first cavity a and a second cavity B, the first cavity a is communicated with the air inlet 101, and the guide convex hull 230 is disposed on a side of the support 220 facing the first cavity a; the fire grate body 210 is mounted to the bracket 220 and is located in the second cavity B.

In this embodiment, the bracket 220 functions to mount the fire grate body 210. The bracket 220 is installed with the housing 100 and divides the inner cavity of the housing 100 into a first cavity a and a second cavity B, the first cavity a is communicated with the air inlet 101, and it is understood that the first cavity a is used for introducing air required for combustion and corresponds to an air cavity. The fire grate body 210 is located in the second cavity B, which is formed as a combustion chamber, and air in the first cavity a can be introduced into the fire grate body 210. The guide convex hull 230 is arranged on one side of the support 220, which faces the first cavity A, so that the guide convex hull 230 can be opposite to the air inlet 101, and therefore the diversion guiding effect on the air inlet flow can be achieved, and the wind rebound resistance is reduced.

In practical application, the support 220 and the housing 100 can be connected in a sealing manner, so as to prevent the air flow from flowing between the support 220 and the housing 100 to cause the cross flow of the flue gas.

Further, referring to fig. 1 to 5, the burner further includes a gas nozzle 300 provided in the first cavity a, the fire grate body 210 is provided with an injection passage 211 and a secondary air passage (not shown), and the injection passage 211 is provided with an injection port 211a opposite to the gas nozzle 300; the bracket 220 comprises a first air inlet plate 221 and a second air inlet plate 222, the first air inlet plate 221 is arranged on one side of the fire grate body 210 where the injection port 211a is arranged, and the first air inlet plate 221 is provided with a first air flow hole 221a which is communicated with the injection port 211a and the first cavity A; the second air inlet plate 222 is connected with the first air inlet plate 221 in an included angle and is positioned between the fire grate body 210 and the air inlet 101, and the second air inlet plate 222 is provided with a second air flow hole 222a for communicating a secondary air channel with the first cavity A; the guide convex hull 230 is disposed at a position opposite to the air inlet 101 of the second air inlet plate 222.

It will be appreciated that when the gas nozzle 300 injects gas toward the injection port 211a, air around the injection port 211a is sucked into the injection passage 211, and the air entering from the injection port 211a is primary air. The first air inlet plate 221 is arranged on one side of the fire grate body 210, which is provided with the injection port 211a, and the first air inlet plate 221 is provided with a first air flow hole 221a corresponding to the injection port 211a, so that air in the first cavity A can smoothly enter the injection port 211a, and the air inlet quantity of primary air is ensured.

The fire grate body 210 is provided with a secondary air passage, and it can be appreciated that the secondary air passage can be a gap between two adjacent fire grate monoliths when the plurality of fire grate monoliths are arranged side by side, and secondary air can be introduced into the flame through the secondary air passage when the fire grate body 210 burns, so that the combustion is more sufficient. The second air inlet plate 222 in this embodiment is provided with a second air flow hole 222a for communicating the secondary air passage with the first cavity a, so that air in the first cavity a can smoothly enter the secondary air passage, and the air intake of secondary air is ensured. The second air inlet plate 222 is located between the fire grate body 210 and the air inlet 101, and the air flowing from the air inlet 101 can be split and guided to the periphery by the guide convex hull 230 by arranging the guide convex hull 230 at the position where the second air inlet plate 222 is opposite to the air inlet 101, and then respectively enters the injection channel 221 from the first air flow hole 221a of the first air inlet plate 221, and enters the secondary air channel from the second air flow hole 222a of the second air inlet plate 222.

In practical application, the fire grate body 210 has a plurality of injection ports 211a, and as an example, the first air flow holes 221a on the first air inlet plate 221 are a plurality, each first air flow hole 221a is corresponding to one injection port 211a, and each injection port 211a is opposite to one gas nozzle 300.

As an example, the second air inlet plate 222 is provided with a plurality of second air flow holes 222a, and in order to further increase the air intake, a plurality of second air flow holes 222a may be provided on the flow guiding convex hull 230, so that the flow guiding convex hull 230 may not only guide the air intake to the periphery, but also introduce part of the air into the secondary air channel of the fire grate body 210 directly through the second air flow holes 222 a.

In an embodiment, referring to fig. 3 to 8, the second air inlet plate 222 and the guide convex hull 230 are integrally formed. In practical application, the flow guiding convex hull 230 can be arranged in a shape of being pressed and protruded from the second air inlet plate 222 towards the air inlet 101, so that the forming process can be simplified, and the manufacturing efficiency can be improved.

In an embodiment, referring to fig. 3 to 8, the first air inlet plate 221 and the second air inlet plate 222 are integrally formed. As an example, the second air inlet plate 222 and the first air inlet plate 221 may be formed to form an included angle by bending, thereby simplifying the forming process and improving the manufacturing efficiency.

In some other embodiments, the bracket 220 further includes a mounting plate 223 connected to the first air inlet plate 221, a first flange 224 is provided at an edge of the mounting plate 223, the second air inlet plate 222 is connected to a second flange 225, the mounting plate 223 is connected to the fire grate body 210, the first flange 224 is connected to an inner wall of the housing 100 in a sealing manner, and the second flange 225 is connected to the inner wall of the housing 100 in a sealing manner, so as to realize the functions of mounting the bracket 220 to the housing 100 and supporting and mounting the fire grate body 210.

In an embodiment of the present application, referring to fig. 1 to 8, the radial dimension of the guide convex hull 230 is greater than the radial dimension of the air intake 101.

In this embodiment, the radial dimension of the outline of the guide convex hull 230 is set to be greater than the radial dimension of the outline of the air inlet 101, so that the guide convex hull 230 can completely cover the outline of the air inlet 101, and thus, air entering from the air inlet 101 can be guided and split by the guide convex hull 230, thereby further reducing wind power rebound and improving air inlet efficiency.

In an embodiment of the present application, the shape and structure of the guide convex hull 230 may be determined according to practical situations.

As an example, referring to fig. 3 to 5, the guide projection 230 is a spherical projection. By setting the flow guiding convex hull 230 to be spherical, the outer surface of the flow guiding convex hull 230 is spherical, and when the air flow vertically hits the flow guiding convex hull 230 from the air inlet 101, the spherical surface can guide and diverge the air flow towards the periphery, so that the air flow resistance can be reduced.

As an example, referring to fig. 6 to 8, the guide projection 230 is a trapezoidal projection. By setting the flow guiding convex hull 230 to be trapezoidal, the outer surface of the trapezoidal convex hull has an inclined plane facing the periphery, so that when the air flow vertically hits the flow guiding convex hull 230 from the air inlet 101, the inclined plane can guide and diverge the air flow toward the periphery, and the air flow resistance can be further reduced.

Of course, in practical application, the shape structure of the guide convex hull 230 is not limited to the above two structures, but may be other structures, which may not be limited herein.

In an embodiment of the present application, referring to fig. 1 to 8, the air inlet 101 is disposed at the bottom of the housing 100, and the guiding convex hull 230 is disposed at the bottom of the fire grate assembly.

During practical application, air flow (such as air and flue gas) in the combustor flows from bottom to top, based on the air flow, the fan can be arranged at the bottom of the shell 100 and blows air towards the inside of the combustor, such as a forced air drum type gas device, at the moment, the air inlet 101 is arranged at the bottom of the shell 100, and the air inlet 101 is opposite to the air inlet 101 by arranging the flow guide convex hulls 230 at the bottom of the fire grate assembly, so that wind energy blown by the fan can be split and guided by the flow guide convex hulls 230, wind power rebound is reduced, air inlet resistance is reduced, air inlet efficiency is guaranteed, and combustion efficiency is improved.

The utility model also provides a gas device, which comprises a fan and a burner, wherein the specific structure of the burner refers to the embodiment, and as the gas device adopts all the technical schemes of all the embodiments, the gas device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein. Wherein, the fan is assembled at the air inlet 101 of the burner.

Alternatively, the gas device may be a gas water heater, a boiler, a wall-mounted boiler, or the like having a burner structure.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims

1. A burner, comprising:

2. The burner of claim 1, wherein the fire grate assembly comprises:

3. The burner of claim 2, further comprising a gas nozzle disposed in the first cavity, the flame row body having an injection passage and a secondary air passage, the injection passage having an injection port opposite the gas nozzle;

the bracket comprises:

4. The burner of claim 3, wherein the deflector ledge is of unitary construction with the second air inlet plate; and/or the second air inlet plate and the first air inlet plate are of an integrated structure.

5. The burner of claim 4, wherein the deflector ledge is arranged in a press-shaped projection from the second intake plate toward the air intake.

6. The burner of any one of claims 1 to 5, wherein the radial dimension of the deflector ledge is greater than the radial dimension of the air intake.

7. The burner of any one of claims 1 to 5, wherein the deflector ledge is a spherical ledge.

8. The burner of any one of claims 1 to 5, wherein the deflector ledge is a trapezoidal ledge.

9. The burner of any one of claims 1 to 5, wherein the air intake is provided at the bottom of the housing and the deflector ledge is provided at the bottom of the fire grate assembly.

10. A gas plant comprising a fan and a burner as claimed in any one of claims 1 to 9, said fan being fitted at the air intake of said burner.