CN115419895B - High-efficient split type infrared burner of infrared kitchen - Google Patents

Abstract

The application belongs to the technical field of household gas stoves, and provides a high-efficiency split infrared burner of an infrared stove, which comprises a premixing part and a combustion part, wherein the premixing part is connected with the combustion part in a matched manner, and the premixing part is provided with an ejector, a first mixing cavity, a splitter plate and an ignition probe assembly; the combustion part is provided with a second mixing cavity, a porous combustion radiation plate and an anti-fouling cover; one end of the ejector is connected with the first mixing cavity, the splitter plate is arranged in the first mixing cavity, and the ignition probe assembly penetrates through the first mixing cavity; the porous combustion radiation plate is matched with an cavity opening of the second mixing cavity, and the ignition probe assembly penetrates through the second mixing cavity and the porous combustion radiation plate. The application has two cavities, the premixing part adopts an integral molding casting process, the processing procedure is simple, and the flow dividing plate is arranged in the premixing part, thereby fundamentally solving the problems of primary air injection, complete premixing of fuel gas and air and consistency of heat intensity, and having the advantages of low carbon, environmental protection, high efficiency, energy saving, safety, reliability and uniform heating.

Description

High-efficient split type infrared burner of infrared kitchen

Technical Field

The application belongs to the technical field of household gas stoves, and particularly relates to a high-efficiency split type infrared burner of an infrared stove.

Background

In the past, the infrared stove has the advantages of high efficiency, energy conservation, low carbon, environmental protection, cleanness, sanitation, uniform heating, strong wind resistance and other performance indexes, thereby becoming a model for competing and pursuing of a plurality of brands in the industry and becoming the primary choice for purchase of a plurality of users. Infrared cookers are the product of the application of infrared burners to household cookers. The infrared burner is designed by adopting a complete premixing type combustion method, and when the burner works, the combustible mixture burns between the inner net and the outer net of the porous combustion radiation plate, and the temperature of the combustion surface is up to 1100 ℃. The working principle of the common natural induced air type infrared burner is as follows: the ejector naturally ejects air into the cavity of the burner through the pressure of the fuel gas, and the air is fully and completely mixed in the ejector and the furnace chamber. The uniformly mixed gas-air mixture enters the combustion surface through the fire holes, and is combusted under the stable flame action of the inner and outer surfaces of the porous combustion radiation plate and the high-temperature backflow flue gas, the primary air naturally ejected by the ejector generally accounts for 105% -110% of the total required theoretical air amount, and the gas-air mixture is combusted immediately after reaching the combustion area, so that the flame is very short and even invisible, and is also called flameless combustion. However, the infrared burner currently in circulation on the market has the following problems:

1. the infrared burner with the integral structural design is adopted, the ejector naturally ejects air into the burner cavity through the gas pressure, and as the mixing cavity is of a columnar structure, a split-flow structure is not designed, local combustion non-uniformity is easy to generate, local high temperature is caused, and the generation probability of nitrogen oxides is increased.

2. The infrared burner with integral structural design is adopted, the ejector naturally ejects air into the burner cavity through the pressure of the fuel gas, and as the mixing cavity is of a columnar structure, a split-flow structure is not designed, the mixing time of the fuel gas and the air in the ejector and the furnace chamber is short, the fuel gas and the air are not fully premixed completely, partial fuel gas layer fluid is formed in the furnace chamber, and the defects of incomplete combustion and low thermal efficiency are easily caused.

3. The infrared burner with the integral structural design is adopted, the ejector naturally ejects air into the burner cavity through the gas pressure, and because the porous burning radiation plate structure is unreasonable in design, the head resistance is large, and the primary air ejection capacity of the ejector is reduced, so that the gas-air mixture cannot realize primary complete combustion after reaching a combustion area, the complete combustion can be realized only by means of secondary air, the flame is elongated, the thermal efficiency is reduced, and the combustion mode of the product is closer to an atmospheric stove in strict sense.

4. The infrared burner adopting the integral structural design still has a plurality of design modes of adopting adhesive to bond and seal between the porous combustion radiation plate and the burner, and if the porous combustion radiation plate is accidentally damaged and needs to be replaced, the parts such as the panel, the burner and the like need to be disassembled for replacement, so that the maintenance complexity is high and the maintenance efficiency is low.

5. The infrared burner adopting the integral structural design cannot form a completely closed structure between the infrared burner and the panel (or the liquid bearing disc), so that stains are very easy to flow into a kitchen range from a gap between the infrared burner and the panel (or the liquid bearing disc) in the cooking process, and then flow into a cabinet, thereby influencing the use experience of a user.

6. The infrared burner adopting the split structural design basically adopts the cast iron structural design, the smoothness of the inner wall of the injection pipe is lower, the primary injection capacity is affected, the complete premixing of fuel gas and air cannot be realized, the flame is prolonged, and the thermal efficiency is reduced.

7. The infrared burner adopting the split structural design directly adopts an atmospheric furnace chamber structure in the premixing cavity, and the parameters of the injection pipe and the cavity cannot meet the design requirements, so that the gas-air cannot be completely premixed, the flame is prolonged, and the thermal efficiency is reduced.

8. The infrared burner with the split structural design is adopted, the inner ring is in atmospheric combustion, the outer ring is in infrared combustion, the atmosphere type and infrared mixing style on a single burner are formed, and no aesthetic feeling and performance advantages are designed.

9. The existing main stream infrared burner circulated in the market is characterized in that an ignition needle and an ion needle are generally arranged in a furnace end middle hole, and are connected by screws, so that when a porous combustion radiation plate is accidentally damaged and needs to be replaced, the ignition needle and the ion needle are required to be detached to loosen, and if the screw is corroded, the maintenance complexity is high and the maintenance efficiency is low.

10. The existing mainstream infrared burner circulated in the market is commonly provided with a stamping burner and a die-casting burner, is limited by stamping and die-casting processes, and adopts a design structure of welding or screw fixing and splicing between an injection pipe and a furnace chamber, so that the processing procedures are more, the processing process is complex, and the processing cost is high.

Disclosure of Invention

In order to overcome the defects in the prior art, the application aims to provide the efficient split type infrared burner of the infrared stove, which has the effects of safety, reliability, high efficiency, energy conservation and compact structure.

The technical scheme adopted for solving the technical problems is as follows:

an efficient split infrared burner for an infrared range, comprising:

a premixing part and a combustion part, wherein the premixing part is in matched connection with the combustion part,

the premixing part is provided with an ejector, a first mixing cavity, a flow dividing plate and an ignition probe assembly;

the combustion part is provided with a second mixing cavity, a porous combustion radiation plate and an anti-fouling cover;

one end of the ejector is connected with the first mixing cavity, the splitter plate is arranged in the first mixing cavity, and the ignition probe assembly is arranged in the first mixing cavity in a penetrating manner;

the porous combustion radiation plate is matched with an coelent of the second mixing cavity, the ignition probe assembly penetrates through the second mixing cavity and the porous combustion radiation plate, and the anti-fouling cover is arranged on the porous combustion radiation plate.

Preferably, the first mixing chamber comprises a first mixing chamber middle part, a first inner mixing chamber and a first outer mixing chamber which are arranged from inside to outside.

Preferably, the middle part of the first mixing cavity is cylindrical, the first inner mixing cavity and the first outer mixing cavity are annular, and the middle part of the first mixing cavity, the first inner mixing cavity and the first outer mixing cavity are concentrically arranged.

Preferably, a first mixing cavity middle hole is formed in the middle of the first mixing cavity, and the ignition probe assembly penetrates through the first mixing cavity middle hole.

Preferably, the ignition probe assembly comprises an ignition probe, a spring, an elastic sheet and a fixed support, wherein an installation position is arranged in a hole in the first mixing cavity, the ignition probe is connected with the installation position through the fixed support, the spring and the elastic sheet are arranged on the ignition probe, and the spring is arranged between the elastic sheet and the installation position.

Preferably, the splitter plate is of an annular structure, the splitter plate is arranged in the first outer mixing cavity, the splitter plate and the first outer mixing cavity are of a separable connecting structure or an integrally formed connecting structure, and one end of the splitter plate abuts against the ejector.

Preferably, the splitter plate comprises an inner splitter plate and an outer splitter plate, the inner splitter plate is arranged in the first inner mixing cavity, and the outer splitter plate is arranged in the first outer mixing cavity.

Preferably, the ejector comprises an inner ejector and an outer ejector;

the inner ejector comprises an inner nozzle bracket, an inner shrinkage pipe, an inner throat pipe and an inner diffusion pipe, and is communicated with the first inner mixing cavity and integrally cast;

the outer ejector comprises an outer nozzle bracket, an outer shrinkage pipe, an outer throat pipe and an outer diffusion pipe, and is communicated with the first outer mixing cavity and integrally cast;

and a temperature control device is arranged at the outer throat pipe.

Preferably, the combustion part further comprises an inner decorative ring and an outer decorative ring, the second mixing cavity comprises a second inner mixing cavity, a second outer mixing cavity and a second mixing cavity middle part, the second inner mixing cavity and the second outer mixing cavity are annular, the second mixing cavity middle part, the second inner mixing cavity and the second outer mixing cavity are concentrically arranged, supporting ribs for connection are arranged between the second mixing cavity middle part and the second inner mixing cavity, a second mixing cavity middle hole is formed in the second mixing cavity middle part, and the ignition probe assembly penetrates through the second mixing cavity middle hole;

the inner circle part of the second outer mixing cavity is abutted against the inner circle part of the first outer mixing cavity, and the outer circle part of the second outer mixing cavity is abutted against the outer circle part of the first outer mixing cavity;

the porous combustion radiation plate is abutted to the upper ends of the second inner mixing cavity and the second outer mixing cavity;

the inner decorative ring is abutted to the inner ring of the porous combustion radiation plate and is fixedly pressed with the ignition probe assembly, and the outer decorative ring is abutted to the outer ring of the porous combustion radiation plate and is fixedly pressed.

Preferably, the anti-fouling cover is arranged at the top of the ignition probe assembly and the inner decorative ring, and a temperature display unit is arranged on the surface of the anti-fouling cover.

Compared with the prior art, the application has the beneficial effects that:

1. the premixing part and the combustion part are provided with two cavities, the premixing part adopts an integrated molding casting process, the processing procedure is simple, and the flow dividing plate is arranged in the premixing part, so that the problems of primary air injection, complete premixing of fuel gas and air and consistency of heat intensity are fundamentally solved, and the premixing device has the advantages of low carbon, environmental protection, high efficiency, energy saving, safety, reliability and uniform heating.

2. According to the application, the two cavities of the premixing part and the combustion part are arranged, the diameter of the second mixing cavity of the combustion part is larger than that of the first mixing cavity of the premixing part, so that the exposure of a burner gap can be effectively avoided, the anti-fouling cover is arranged in the center, the problem of the anti-fouling defect inside and outside the burner can be thoroughly solved, and the structure is attractive in appearance.

3. The application is provided with the premixing part and the two cavities of the combustion part, and the combustion part is tightly pressed by the ignition probe assembly, so that the application has the advantages of simple installation, convenient disassembly and assembly, high maintenance efficiency and the like.

Drawings

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

FIG. 1 is an exploded view of a high-efficiency split-type infrared burner of an infrared range according to embodiment 1 of the present application;

FIG. 2 is a sectional view showing the structure of a high-efficiency split-type infrared burner of an infrared range according to embodiment 1 of the present application;

FIG. 3 is a sectional view of a combustion section in embodiment 1 of the present application;

FIG. 4 is a schematic perspective view of a second mixing chamber in embodiment 1 of the present application;

FIG. 5 is a cross-sectional view of the premix section of example 1 of the present application;

FIG. 6 is a schematic perspective view of a first mixing chamber in embodiment 1 of the application;

FIG. 7 is a schematic perspective view of a diverter plate according to example 1 of the present application;

FIG. 8 is a perspective view of an ignition probe assembly according to embodiment 1 of the present application;

FIG. 9 is a schematic perspective view of a first mixing chamber in embodiment 2 of the present application;

FIG. 10 is a sectional view of a combustion section in embodiment 3 of the present application;

FIG. 11 is a sectional view showing the structure of a split-type infrared burner for an infrared range according to embodiment 4 of the present application;

FIG. 12 is a cross-sectional view of the premix section of example 4 of the present application;

FIG. 13 is a sectional view of a combustion section in embodiment 4 of the present application;

FIG. 14 is a schematic perspective view of a second mixing chamber in example 4 of the present application;

FIG. 15 is a top view of the infrared burner of example 5 of the present application (without the anti-fouling cover);

fig. 16 is a perspective view of an ignition probe assembly according to embodiment 5 of the present application.

FIG. 17 is a schematic diagram of the combustion temperature of the fire hole surface at different positions of the multi-hole combustion radiation plate measured by using a thermal imager in example 1 of the present application.

Wherein:

1: a premix;

1-1: an ejector; 1-1-1: an inner ejector; 1-1-1-1: an inner nozzle support; 1-1-1-2: an inner shrink tube; 1-1-1-3: an inner throat; 1-1-1-4: an inner diffusion tube; 1-1-2: an outer ejector; 1-1-2-1: an outer nozzle support; 1-1-2-2: an outer shrink tube; 1-1-2-3: an outer throat; 1-1-2-4: an outer diffusion tube;

1-2: a first mixing chamber; 1-2-1: a first outer mixing chamber; 1-2-2: a first internal mixing chamber; 1-2-3: a first mixing chamber orifice;

1-3: a diverter plate; 1-3A: an inner splitter plate; 1-3B: an outer splitter plate;

1-4: an ignition probe assembly; 1-4-1: an ignition probe; 1-4-2: a spring; 1-4-3: a spring plate; 1-4-4-fixing bracket;

1-5: a temperature control device;

2: a combustion section;

2-1: a second mixing chamber; 2-1-1: a second internal mixing chamber; 2-1-2: a second outer mixing chamber; 2-1-3: a support rib; 2-1-4: a second mixing chamber orifice;

2-2: a porous combustion radiant panel;

2-3: an inner decorative ring;

2-4: an outer decorative ring;

2-5: an anti-fouling cover.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. The embodiments of the present application and the features in the embodiments may be combined with each other without collision. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, and the described embodiments are merely some, rather than all, embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Example 1:

as shown in fig. 1 to 8, the present embodiment provides a high-efficiency split type infrared burner of an infrared range, comprising:

a premixing part 1 and a combustion part 2, wherein the premixing part 1 is matched and connected with the combustion part 2,

the premixing part 1 is provided with an ejector 1-1, a first mixing cavity 1-2, a splitter plate 1-3 and an ignition probe assembly 1-4; wherein the ejector 1-1 comprises an inner ejector 1-1-1 and an outer ejector 1-1-2;

the first mixing cavity 1-2 comprises a first mixing cavity 1-2 middle part, a first inner mixing cavity 1-2-2 and a first outer mixing cavity 1-2-1 which are arranged from inside to outside, the middle part of the first mixing cavity 1-2 is cylindrical, the first inner mixing cavity 1-2-2 and the first outer mixing cavity 1-2-1 are annular, the middle part of the first mixing cavity 1-2, the first inner mixing cavity 1-2-2 and the first outer mixing cavity 1-2-1 are concentrically arranged, a first mixing cavity middle hole 1-2-3 is arranged in the middle part of the first mixing cavity 1-2, the ignition probe component 1-4 is arranged in the first mixing cavity middle hole 1-2-3 in a penetrating way,

the inner ejector 1-1-1 comprises an inner nozzle bracket 1-1-1-1, an inner nozzle bracket 1-1-2, an inner throat pipe 1-1-1-3 and an inner diffusion pipe 1-1-1-4, wherein the inner ejector 1-1-1 is communicated with the first inner mixing cavity 1-2-2 and is integrally cast;

the outer ejector 1-1-2 comprises an outer nozzle bracket 1-1-2-1, an outer shrinkage tube 1-1-2-2, an outer throat tube 1-1-2-3 and an outer diffusion tube 1-1-2-4, wherein the outer ejector 1-1-2 is communicated with the first outer mixing cavity 1-2-1 and is integrally cast.

The structure of the inner ejector 1-1-1 and the outer ejector 1-1-2 are concentrated at one end of the premixing part 1 and are integrally cast and formed, so that the processing procedure is simplified, and the problems of primary air ejection capacity and gas-air mixing are fundamentally solved. In the embodiment, the burner is integrally cast and molded by adopting aluminum materials, so that the smoothness of the surface of the inner wall surface is ensured, and compared with a die-casting molding process, the burner has no process core-pulling holes, and the stability of gas-air circulation is ensured.

The outer surface of the outer venturi tube 1-1-2-3 is provided with a temperature control device 1-5, the temperature control device 1-5 has the function of tempering prevention, and a dynamic tempering or thermal tempering fault generated under extreme accident conditions closes a valve through an executing mechanism of the temperature control device 1-5 so as to achieve the aim of safety protection. In this embodiment, the valve is a gas control electromagnetic valve for controlling the supply of gas.

The splitter plate 1-3 is of an annular structure, the splitter plate 1-3 is arranged in the first outer mixing cavity 1-2-1, the splitter plate 1-3 is an independent component, the splitter plate 1-3 and the first outer mixing cavity 1-2-1 are of a separable connecting structure, one end of the splitter plate 1-3 abuts against the outer diffusion tube 1-1-2-4, and the problems of complete premixing of gas and air and consistency of heat intensity can be further and effectively solved, and the specific principle is as follows:

the fuel gas-air mixture flows out of the inner diffusion tube 1-1-1-4 and the outer diffusion tube 1-1-2-4 and then directly enters the first mixing cavity 1-2, and the fuel gas-air mixture generally shows a spiral rotation rising trend; as the traditional infrared burner is not provided with the splitter plate, part of mixed gas is not mixed by rotation and directly rises into the fire hole to burn, so that the defects of uneven burning and high heat intensity of the fire hole are caused; the splitter plate 1-3 is arranged at the outlet of the outer diffusion pipe 1-1-2-4, so that the direct rising path of the mixed gas after flowing out of the diffusion pipe is blocked, the mixed gas is forced to rotate and mix, and the defects of uneven combustion and high heat intensity of the fire hole caused by the direct rising of the gas flow into the fire hole are eliminated.

As a further improvement, as the mixed gas is forced to be mixed and rotated to rise after encountering the splitter plates 1-3, and the mixing speed is gradually reduced, a notch is arranged at the tail end of the splitter plate along the mixing direction, and the angle of the notch is 0-270 degrees, the scheme adopts an optimal 90-degree dividing line, so that the mixed gas can be further ensured to uniformly enter the fire hole for stable combustion.

The ignition probe assembly 1-4 comprises an ignition probe 1-4-1, a spring 1-4-2 and an elastic sheet 1-4-3, wherein an installation position is arranged in a hole 1-2-3 in the first mixing cavity, the ignition probe 1-4-1 is connected with the installation position, the spring 1-4-2 and the elastic sheet 1-4-3 are arranged on the ignition probe 1-4-1, the spring 1-4-2 is arranged between the elastic sheet 1-4-3 and the installation position, and the ignition probe assembly 1-4 mainly has the functions of discharging and flame induction.

The combustion part 2 is provided with a second mixing cavity 2-1, a porous combustion radiation plate 2-2, an anti-fouling cover 2-5, an inner decorative ring 2-3 and an outer decorative ring 2-4; the second mixing cavity 2-1 comprises a second inner mixing cavity 2-1-1, a second outer mixing cavity 2-1-2 and the middle part of the second mixing cavity 2-1, the second inner mixing cavity 2-1-1 and the second outer mixing cavity 2-1-2 are annular, the middle part of the second mixing cavity 2-1, the second inner mixing cavity 2-1-1 and the second outer mixing cavity 2-1-2 are concentrically arranged from inside to outside, a supporting rib 2-1-3 for connection is arranged between the middle part of the second mixing cavity 2-1 and the second inner mixing cavity 2-1-1, a second mixing cavity middle hole 2-1-4 is arranged in the middle part of the second mixing cavity 2-1, and the ignition probe assembly 1-4 is arranged in the second mixing cavity middle hole 2-1-4 in a penetrating manner;

the inner circle part of the second outer mixing cavity 2-1-2 is abutted against the inner circle part of the first outer mixing cavity 1-2-1, and the outer circle part of the second outer mixing cavity 2-1-2 is abutted against the outer circle part of the first outer mixing cavity 1-2-1;

the porous combustion radiation plate 2-2 is abutted to the upper ends of the second inner mixing cavity 2-1-1 and the second outer mixing cavity 2-1-2;

the inner decorative ring 2-3 is abutted to the inner ring of the porous combustion radiation plate 2-2 and is pressed and fixed with the ignition probe assembly 1-4, and the outer decorative ring 2-4 is abutted to the outer ring of the porous combustion radiation plate 2-2 and is pressed and fixed, so that the tightness is ensured.

The anti-fouling cover 2-5 is arranged at the top of the ignition probe assembly 1-4 and the inner decorative ring 2-3, the anti-fouling cover 2-5 is made of a nonmetallic material, and the surface of the anti-fouling cover is provided with a temperature display unit which is made by mixing a thermochromic material and a nonmetallic material.

Example 2:

as shown in fig. 9, the embodiment of the present application provides a high-efficiency split infrared burner of an infrared stove, which is different from embodiment 1 in that the splitter plate 1-3 has an integral structure with the pre-mixer 1, specifically, the inner splitter plate 1-3A is disposed in the first inner mixing chamber 1-2-2, the outer splitter plate 1-3B is disposed in the first outer mixing chamber 1-2-1, the structure is more centralized, and the processing technology is simple.

Example 3:

as shown in fig. 10, the present embodiment of the present application provides a high-efficiency split-type infrared burner of an infrared range, which is different from embodiment 1 in that the combustion portion 2 is provided with a flow guiding structure that inclines upwards from inside to outside, so that the mixed gas can be effectively uniformly guided and distributed to each fire hole of the multi-hole combustion radiation plate 2-2, which has the advantages of uniform combustion and reduced local high temperature.

Example 4:

11-14, the difference between the efficient split infrared burner provided in this embodiment and embodiment 1 is that the second inner mixing chamber 2-1-1 of the combustion portion 2 is provided with a second mixing chamber middle hole 2-1-4, the ignition probe assembly 1-4 is disposed in the second mixing chamber middle hole 2-1-4 of the combustion portion 2, the inner circle portion of the second inner mixing chamber 2-1-1 of the combustion portion 2 is abutted against the inner circle portion of the first inner mixing chamber 1-2-2 of the pre-mixing portion 1, the inner circle portion of the second outer mixing chamber 2-1-2 of the combustion portion 2 is abutted against the inner circle portion of the first outer mixing chamber 1-2-1 of the pre-mixing portion 1, and the outer circle portion of the second outer mixing chamber 2-1-2 of the combustion portion 2 is abutted against the outer circle portion of the first outer mixing chamber 1-2-1 of the pre-mixing portion 1.

Example 5:

15-16, the difference between the high-efficiency split infrared burner of the infrared stove provided in this embodiment and embodiment 1 is that the ignition probe assembly 1-4 includes an ignition probe 1-4-1 and a fixing bracket 1-4-4, and the ignition probe assembly 1-4 and the inner decoration ring 2-3 are fixed together in the first mixing cavity hole 1-2-3 of the pre-mixing part 1 by screws, so as to compress the porous radiant combustion plate, so that the structure is firmer and the sealing performance is better.

In order to further achieve the effects of complete premixing of the gas and the air, complete combustion of the gas and the air, and consistency of the heat intensity of the fire hole, the premixing part 1 and the combustion part 2 have certain constraint relations besides meeting the above conditions, and the technical parameters are as shown in table 1:

	diameter of outer circle of first outer mixing chamber	The ratio of the diameter of the outer circle of the second outer mixing cavity to the diameter of the outer circle of the first outer mixing cavity
			Technical parameters	φ90-φ130mm	(1-1.5):1

The porous combustion radiation plate adopts a porous honeycomb ceramic plate which is prepared from cordierite as a main raw material, and the technical parameters are shown in Table 2:

porous combustion radiant panel	Material of material	Diameter of fire hole	Fire hole opening ratio	Diameter to thickness ratio
					Technical parameters	Cordierite articles	φ1.0-φ1.3mm	35％-50％	(10-15)：1

The test results obtained with reference to the method of use of the preferred embodiment of the application are given below:

example 1: the method comprises the steps that by means of the fact that the diameter of the outer circle of a first mixing cavity of a premixing part 1 is phi 110mm, the diameter of the outer circle of a second mixing cavity is phi 150mm, the diameter of a fire hole of a porous combustion radiation plate is phi 1.3mm, the opening ratio of the fire hole is 40%, the thickness of the porous combustion radiation plate is 12mm, an efficient split type infrared burner with the diameter of the porous combustion radiation plate being phi 150mm is arranged on an infrared stove with a rated heat load of 3.5kW and tested under the rated pressure, a dark area and a bright area cannot be seen on an image of a thermal infrared imager, and complete combustion is indicated. As shown in fig. 17;

table 3 is a chart of the combustion temperature of the fire hole surface at different positions of the multi-hole combustion radiation plate measured by using an infrared thermometer:

combustion time	Temperature measuring point a	Temperature measuring point b	Temperature measuring point c	Temperature measuring point d	Temperature measuring point e
						60S	663.5℃	683.3℃	675.4℃	661.7℃	668.6℃
120S	766.8℃	797.8℃	788.5℃	765.6℃	770.8℃
						300S	925.3℃	955.3℃	948.3℃	1923.8℃	931.1℃
600S	1033.4℃	1063.7℃	1055.5℃	1041.3℃	1038.2℃

The temperature measurement point a, b, c, d, e is the position shown in fig. 17.

The mixing principle of the fuel gas and the air in the scheme is as follows:

the fuel gas is sprayed out from a nozzle of the ejector, air is ejected into the outer shrinkage tube together by means of natural draft, and the primary air coefficient alpha reaches 1.03-1.10 after passing through the ejector; the fuel gas and the air flow through the outer venturi tube from the outer shrinkage tube, are mixed and then enter the inner diffusion tube and the outer diffusion tube for further mixing, and meanwhile, a part of dynamic pressure is changed into static pressure, so that the pressure of the mixed gas is improved; because an integral molding casting process is adopted, the tail part of the outer diffusion tube is provided with no process core-pulling hole, the resistance loss of the gas-air mixture is reduced, and the primary air injection capacity is further improved; the gas-air mixture directly enters the first mixing cavity for rotary mixing after flowing out of the outer diffusion pipe, and as the upper end of the first mixing cavity is provided with the splitter plate and an asymmetric annular design structure is adopted, the gas-air mixture is ensured to be basically and uniformly distributed into the second mixing cavity, and the gas-air mixture is fully mixed in the second mixing cavity at last, so that the gas-air is in a complete premixing state; the gas and air mixture finally reaches each fire hole uniformly for stable and complete combustion, and the consistency of the heat intensity of each fire hole is ensured.

In summary, the application has the following advantages:

1. the premixing part and the combustion part are provided with two cavities, the premixing part adopts an integrated molding casting process, the processing procedure is simple, and the flow dividing plate is arranged in the premixing part, so that the problems of primary air injection, complete premixing of fuel gas and air and consistency of heat intensity are fundamentally solved, and the premixing device has the advantages of low carbon, environmental protection, high efficiency, energy saving, safety, reliability and uniform heating.

2. According to the application, the two cavities of the premixing part and the combustion part are arranged, the diameter of the second mixing cavity of the combustion part is larger than that of the first mixing cavity of the premixing part, so that the exposure of a burner gap can be effectively avoided, the anti-fouling cover is arranged in the center, the problem of the anti-fouling defect inside and outside the burner can be thoroughly solved, and the structure is attractive in appearance.

3. The application is provided with the premixing part and the two cavities of the combustion part, and the combustion part is tightly pressed by the ignition probe assembly, so that the application has the advantages of simple installation, convenient disassembly and assembly, high maintenance efficiency and the like.

The present application is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present application are within the scope of the technical proposal of the present application.

Claims (6)

1. An efficient split infrared burner for an infrared range, comprising:

a premixing part and a combustion part, wherein the premixing part is in matched connection with the combustion part,

the premixing part is provided with an ejector, a first mixing cavity, a flow dividing plate and an ignition probe assembly;

the combustion part is provided with a second mixing cavity, a porous combustion radiation plate and an anti-fouling cover;

one end of the ejector is connected with the first mixing cavity, the splitter plate is arranged in the first mixing cavity, and the ignition probe assembly is arranged in the first mixing cavity in a penetrating manner;

the porous combustion radiation plate is matched with an cavity opening of the second mixing cavity, the ignition probe assembly penetrates through the second mixing cavity and the porous combustion radiation plate, and the anti-fouling cover is arranged on the porous combustion radiation plate;

the first mixing cavity comprises a first mixing cavity middle part, a first inner mixing cavity and a first outer mixing cavity which are arranged from inside to outside;

the middle part of the first mixing cavity is cylindrical, the first inner mixing cavity and the first outer mixing cavity are circular rings, and the middle part of the first mixing cavity, the first inner mixing cavity and the first outer mixing cavity are concentrically arranged;

the combustion part further comprises an inner decorative ring and an outer decorative ring, the second mixing cavity comprises a second inner mixing cavity, a second outer mixing cavity and a second mixing cavity middle part, the second inner mixing cavity and the second outer mixing cavity are annular, the second mixing cavity middle part, the second inner mixing cavity and the second outer mixing cavity are concentrically arranged, supporting ribs for connection are arranged between the second mixing cavity middle part and the second inner mixing cavity, a second mixing cavity middle hole is formed in the second mixing cavity middle part, and the ignition probe assembly penetrates through the second mixing cavity middle hole;

the inner circle part of the second outer mixing cavity is abutted against the inner circle part of the first outer mixing cavity, and the outer circle part of the second outer mixing cavity is abutted against the outer circle part of the first outer mixing cavity;

the porous combustion radiation plate is abutted to the upper ends of the second inner mixing cavity and the second outer mixing cavity;

the inner decorative ring is abutted to the inner ring of the porous combustion radiation plate and is fixedly pressed with the ignition probe assembly, and the outer decorative ring is abutted to the outer ring of the porous combustion radiation plate and is fixedly pressed;

the anti-fouling cover is arranged at the top of the ignition probe assembly and the inner decorative ring, and the surface of the anti-fouling cover is provided with a temperature display unit;

the splitter plate is of an annular structure, the splitter plate is arranged in the first outer mixing cavity, the splitter plate and the first outer mixing cavity are of a separable connecting structure or an integrally formed connecting structure, and one end of the splitter plate abuts against the ejector; the end of the splitter plate along the mixing direction is provided with a notch, and the angle of the notch is 0-270 degrees.

2. The infrared burner of claim 1, wherein a first mixing chamber orifice is formed in the middle of the first mixing chamber, and the ignition probe assembly is disposed through the first mixing chamber orifice.

3. The infrared burner of claim 2, wherein the ignition probe assembly comprises an ignition probe, a spring sheet and a fixing support, wherein a mounting position is arranged in the first mixing cavity, the ignition probe is connected with the mounting position through the fixing support, the spring and the spring sheet are arranged on the ignition probe, and the spring is arranged between the spring sheet and the mounting position.

4. The efficient split infrared burner of the infrared stove according to claim 1, wherein the splitter plate is of an annular structure, the splitter plate is arranged in the first outer mixing cavity, the splitter plate and the first outer mixing cavity are of a split connection structure or an integrated connection structure, and one end of the splitter plate abuts against the ejector.

5. The infrared burner of claim 4, wherein the splitter plate comprises an inner splitter plate and an outer splitter plate, the inner splitter plate being disposed in the first inner mixing chamber and the outer splitter plate being disposed in the first outer mixing chamber.

6. The efficient split infrared burner of an infrared range of claim 4, wherein the injector comprises an inner injector and an outer injector;

the inner ejector comprises an inner nozzle bracket, an inner shrinkage pipe, an inner throat pipe and an inner diffusion pipe, and is communicated with the first inner mixing cavity and integrally cast;

the outer ejector comprises an outer nozzle bracket, an outer shrinkage pipe, an outer throat pipe and an outer diffusion pipe, and is communicated with the first outer mixing cavity and integrally cast;

and a temperature control device is arranged at the outer throat pipe.