CN212108389U

CN212108389U - Infrared burner

Info

Publication number: CN212108389U
Application number: CN202020564676.4U
Authority: CN
Inventors: 田重青; ***
Original assignee: Shaoxing Desen Electrical Technology Co ltd
Current assignee: Shaoxing Pinsheng intelligent kitchen electricity Co.,Ltd.
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-08
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses an infrared burner, include: a porous ceramic plate for heating by external radiation; an outer ring mixing chamber for generating outer ring flame for heating the porous ceramic plate; an inner ring mixing chamber for generating inner ring flame for heating the porous ceramic plate; an outer ring venturi tube communicated with the outer ring mixing chamber; an inner ring venturi tube communicated with the inner ring mixing chamber; the outer ring mixing cavity is formed by connecting an outer ring upper mixing cavity and an outer ring lower mixing cavity which are mutually independent, the inner ring mixing cavity is formed by connecting an inner ring upper mixing cavity and an inner ring lower mixing cavity which are mutually independent, and the outer ring lower mixing cavity and the inner ring lower mixing cavity, as well as the outer ring venturi tube and the inner ring venturi tube are buckled up and down through integral stretching to form a cavity and a tube body. The utility model discloses infrared burner can effectively improve combustion efficiency, reduces harmful substance concentration in the dry flue gas, both can increase infrared burner's power simultaneously, greatly reduces the tempering probability again, improves combustion stability and security.

Description

Infrared burner

Technical Field

The utility model belongs to a part of cooking utensils, concretely relates to infrared burner.

Background

Infrared ray burner kitchen utensils have the advantages of complete combustion, high thermal efficiency, low concentration of harmful substances in the discharged dry flue gas, etc., and are widely used. The infrared burner adopts a full premix combustion technology, the coefficient of excess air a is 1.03-1.08, and enough premix air is needed to meet the combustion requirement, so the requirement on the manufacturing precision of the infrared burner is high.

The infrared ray burner's that currently market uses kitchen range has two kinds:

1. casting a iron cooking range: the cooking range is integrally cast by gray iron, and has the following defects: a. the inside of the venturi cannot be processed, the coaxiality of a nozzle cannot be guaranteed, and the suction of mixed air and the mixing of air and fuel gas are seriously influenced, so that the infrared burner is insufficient in combustion and the exhaust of smoke exceeds the standard; b. the burner cavity is connected with the mixing diffusion section of the venturi, and the heat of the porous ceramic plate is quickly transferred to the venturi during combustion, so that the temperature around the nozzle is quickly raised, and the tempering probability is greatly improved.

2. Drawing a cooking range by using a cold plate: the cooking range is stretched into an inner cylindrical cooking range cavity and an outer cylindrical cooking range cavity by a cold plate, and then two venturis of an outer ring and an inner ring are respectively inserted into the two cylindrical cooking range cavities, so that the cooking range has the following defects: a. the venturi is formed by three-section welding, and the coaxiality of the nozzle can not be ensured; b. the cooking range cavity is also connected with the mixed diffusion section of the venturi, so that the tempering probability is greatly improved.

In addition, the existing two cooking ranges adopt a straight barrel type cooking range mixing cavity, and the defects are that: a. when the infrared burner works, the heat at the lower part of the cooking range is too high, and the components such as an igniter, a battery box, an ignition wire and the like are seriously influenced; b. when mixed air flow of the outer ring venturi enters the mixing cavity of the outer ring cooking range from the side, the surface of the porous ceramic plate is biased to fire.

The chinese national intellectual property office announces 22 days in 2018 and 5 months, and the announcement number is CN207394843U, the utility model discloses create the utility model patent of a name infrared burner and announce 26 days in 2019 and 4 months, and the announcement number is CN208794411U, the utility model discloses create the utility model patent of a name infrared burner, all disclose the mixed diffusion section lug connection of venturi tube at the straight barrel type kitchen range hybrid chamber of kitchen range intracavity to can produce the not enough of above-mentioned record.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an infrared burner can effectively improve combustion efficiency and security, and it adopts following technical scheme:

an infrared burner comprising: a porous ceramic plate for heating by external radiation; an outer ring mixing chamber for generating outer ring flame for heating the porous ceramic plate; an inner ring mixing chamber for generating inner ring flame for heating the porous ceramic plate; an outer ring venturi tube communicated with the outer ring mixing chamber; an inner ring venturi tube communicated with the inner ring mixing chamber; the outer ring mixing cavity is formed by connecting an outer ring upper mixing cavity and an outer ring lower mixing cavity which are mutually independent, the inner ring mixing cavity is formed by connecting an inner ring upper mixing cavity and an inner ring lower mixing cavity which are mutually independent, and the outer ring lower mixing cavity and the inner ring lower mixing cavity, as well as the outer ring venturi tube and the inner ring venturi tube are buckled up and down through integral stretching to form a cavity and a tube body; the cavity that mixing chamber and inner ring lower mixing chamber formed under the outer loop, and the body that outer loop venturi tube and inner ring venturi tube formed are structure as an organic whole and communicate with each other, and two venturi tubes no longer are segmentation processing formation, guarantee the axiality of venturi tube contraction section, mixing section and diffusion section, guarantee the depth of parallelism between two venturi tubes each other and with the kitchen range simultaneously to make the air current smooth and easy, the burning is complete, effectively improves combustion efficiency, reduces harmful substance concentration in the dry flue gas.

Meanwhile, the inlet of the outer ring venturi and the inlet of the inner ring venturi are both connected with the double-layer nozzle frame, so that the coaxiality of the nozzle and the venturi is further ensured, the air flow is smoother, and the combustion efficiency is improved.

The outer ring venturi and the inner ring venturi are respectively and integrally positioned outside the outer ring lower mixing cavity and the inner ring lower mixing cavity, the outer ring venturi is integrally positioned outside the outer ring lower mixing cavity, the inner ring venturi is integrally positioned outside the inner ring lower mixing cavity, and the outer ring venturi and the inner ring venturi are respectively communicated with the outer ring lower mixing cavity and the inner ring lower mixing cavity after mixed diffusion; the two venturis are integrally connected without extending into the mixing cavity, the two venturis are far away from the mixing cavity, and the temperature around the venturis and the nozzles of the venturis is controlled, so that the power of the infrared burner can be increased, the tempering probability is greatly reduced, and the combustion stability of the infrared burner is obviously improved; meanwhile, the temperature of the lower part of the mixing cavity is effectively controlled, so that the normal work of components such as an igniter, a battery box, an ignition wire and the like is guaranteed, the service life of a product is prolonged, and the safety of the product is improved.

Meanwhile, a gap is formed between the outer ring venturi and the inner ring venturi and the outer wall of the mixing cavity on the outer ring, and the two venturis are not in direct contact with the mixing cavity on the outer ring, so that the heat conduction of the mixing cavity on the outer ring to the two venturis is further reduced, the temperature around the venturis and the nozzles of the venturis is controlled, and the combustion stability is improved.

The intracavity of outer loop hybrid chamber is equipped with the separation limit, the separation limit is corresponding to the exit of outer loop venturi tube, the junction of hybrid chamber under hybrid chamber and the outer loop on the outer loop can be established on the separation limit, the separation is along the inner wall that hybrid chamber and outer loop were gone up to the outer loop and is the arc extension setting, the air current receives the guide effect on separation limit after flowing out from the exit of outer loop venturi tube, with air current homodisperse to whole outer loop hybrid chamber, effectively avoid infrared burner porous ceramic plate surface fire partially, realize the even heating.

The top end of the mixing cavity on the inner ring is embedded into the porous ceramic plate, so that the inner ring flame and the outer ring flame are isolated.

The utility model discloses infrared burner can effectively improve combustion efficiency, reduces harmful substance concentration in the dry flue gas, both can increase infrared burner's power simultaneously, greatly reduces the tempering probability again, improves combustion stability and security.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a schematic view of the infrared burner of the present invention;

FIG. 2 is an isometric view of the venturi tube of the middle and outer rings of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a view taken along line A of FIG. 3;

FIG. 5 is a view taken along line B of FIG. 3;

FIG. 6 is a partial cross-sectional view of the porous ceramic plate of FIG. 5 when attached;

FIG. 7 is an enlarged view of a portion of FIG. 6 at I;

FIG. 8 is a cross-sectional view of a middle double nozzle holder according to the present invention;

fig. 9 is a cross-sectional view of two venturi structures in the present invention.

Detailed Description

As shown in fig. 1 to 9, the utility model discloses an infrared burner, include: a porous ceramic plate 1 for heating by external radiation; an outer ring mixing chamber for generating outer ring flame for heating the porous ceramic plate 1; an inner ring mixing chamber for generating inner ring flame for heating the porous ceramic plate 1; an outer ring venturi 4 communicated with the outer ring mixing chamber; an inner ring venturi 5 communicated with the inner ring mixing chamber; the outer ring mixing cavity is formed by connecting an outer ring upper mixing cavity 21 and an outer ring lower mixing cavity 22 which are mutually independent, a blocking edge 23 which extends in an arc shape is arranged at the joint of the outer ring upper mixing cavity 21 and the outer ring lower mixing cavity 22, and the blocking edge 23 corresponds to the outlet of the outer ring venturi tube 4; the inner ring mixing cavity is formed by connecting an inner ring upper mixing cavity 31 and an inner ring lower mixing cavity 32 which are independent from each other. So that the whole infrared burner is divided into an upper part and a lower part:

wherein the outer ring upper mixing cavity 21 and the inner ring upper mixing cavity 31 are two cylindrical stretching pieces with different sizes, the inner ring upper mixing cavity 31 is arranged in the outer ring upper mixing cavity 21, the upper plane of the inner ring upper mixing cavity 31 is 1mm higher than the lower plane of the porous ceramic plate 1, so that the top end of the inner ring upper mixing cavity 31 is embedded in the porous ceramic plate 1 for 1mm, and an upper component a of the infrared burner is formed by spot welding;

wherein the outer ring lower mixing cavity 22, the inner ring lower mixing cavity 32, the outer ring venturi tube 4 and the inner ring venturi tube 5 are respectively integrally stretched into corresponding convex-concave parts through two sheets of plates, the two convex-concave parts are vertically buckled to form a hollow part, namely the outer ring lower mixing cavity 22, the inner ring lower mixing cavity 32, the outer ring venturi tube 4 and the inner ring venturi tube 5 which are integrally communicated, and then the double-layer nozzle frame 6 is welded at the inlet of the outer ring venturi tube 4 and the inlet of the inner ring venturi tube 5 to form a lower component b of the infrared burner.

The outer ring venturi 4 and the inner ring venturi 5 are respectively and integrally arranged outside the outer ring lower mixing cavity 22 and the inner ring lower mixing cavity 32, and the outer ring venturi 4 and the inner ring venturi 5 are only integrally connected without extending into the mixing cavities; meanwhile, a gap 7 is formed between the outer ring venturi 4 and the inner ring venturi 5 and the outer wall of the outer ring upper mixing cavity 21, and the two venturis are not in direct contact with the outer wall of the outer ring upper mixing cavity 21; the air and the fuel gas are mixed and diffused in an accelerating way through a nozzle (not shown) and two venturis in the double-layer nozzle frame 6, the whole process is finished outside the mixing cavity, and then the mixed gas enters the outer ring lower mixing cavity 22 and the inner ring lower mixing cavity 32 respectively.

The utility model discloses the working process is as follows:

after air and fuel gas are subjected to accelerated mixing and diffusion through the nozzle and the two venturis, the mixed gas respectively enters the outer ring lower mixing cavity 22 and the inner ring lower mixing cavity 32; the mixed gas in the outer ring lower mixing cavity 22 enters the outer ring upper mixing cavity 21 through the blocking edge 23 and is fully mixed and then overflows from the porous ceramic plate 1; the mixed gas in the inner ring lower mixing chamber 32 enters the inner ring upper mixing chamber 31 to be fully mixed and then overflows from the porous ceramic plate 1.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Any simple change, equivalent replacement or modification made based on the utility model with the basically same means to achieve the basically same function and the basically same effect is covered in the protection scope of the utility model.

Claims

1. An infrared burner comprising:

a porous ceramic plate for heating by external radiation;

an outer ring mixing chamber for generating an outer ring flame for heating said porous ceramic plate;

an inner ring mixing chamber for generating an inner ring flame for heating said porous ceramic plate;

an outer ring venturi in communication with said outer ring mixing chamber;

an inner ring venturi in communication with said inner ring mixing chamber;

the method is characterized in that:

the outer ring mixing cavity is formed by connecting an outer ring upper mixing cavity and an outer ring lower mixing cavity which are mutually independent,

the inner ring mixing cavity is formed by connecting an inner ring upper mixing cavity and an inner ring lower mixing cavity which are mutually independent,

the outer ring lower mixing cavity, the inner ring lower mixing cavity, the outer ring venturi tube and the inner ring venturi tube are integrally stretched and are buckled up and down to form a cavity and a tube body.

2. The infrared burner as set forth in claim 1, wherein: the outer ring venturi and the inner ring venturi are respectively and integrally arranged outside the outer ring lower mixing cavity and the inner ring lower mixing cavity, and the outer ring venturi and the inner ring venturi are respectively communicated with the outer ring lower mixing cavity and the inner ring lower mixing cavity after mixed and expanded.

3. The infrared burner as set forth in claim 2, wherein: and gaps are formed between the outer ring venturi and the inner ring venturi and the outer wall of the mixing cavity on the outer ring.

4. An infrared burner as set forth in any one of claims 1-3, wherein: and a blocking edge is arranged in the cavity of the outer ring mixing cavity and corresponds to the outlet of the outer ring venturi tube.

5. The infrared burner as set forth in claim 4, wherein: the blocking edge is arranged at the joint of the mixing cavity on the outer ring and the mixing cavity under the outer ring.

6. The infrared burner as set forth in claim 5, wherein: the blocking edge extends along the inner walls of the outer ring upper mixing cavity and the outer ring lower mixing cavity in an arc shape.

7. An infrared burner as set forth in any one of claims 1-3, wherein: the inlet of the outer ring venturi and the inlet of the inner ring venturi are both connected with a double-layer nozzle frame.

8. An infrared burner as set forth in any one of claims 1-3, wherein: the top end of the mixing cavity on the inner ring is embedded in the porous ceramic plate.