CN112432174B - Burner fire cover, burner and gas stove - Google Patents

Burner fire cover, burner and gas stove Download PDF

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Publication number
CN112432174B
CN112432174B CN202011359915.3A CN202011359915A CN112432174B CN 112432174 B CN112432174 B CN 112432174B CN 202011359915 A CN202011359915 A CN 202011359915A CN 112432174 B CN112432174 B CN 112432174B
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China
Prior art keywords
fire cover
central
burner
infrared
annular
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CN202011359915.3A
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Chinese (zh)
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CN112432174A (en
Inventor
汪一
廖标建
陈震霖
邓伟
熊哲
向军
胡松
苏胜
江龙
徐俊
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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Priority to CN202011359915.3A priority Critical patent/CN112432174B/en
Publication of CN112432174A publication Critical patent/CN112432174A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14062—Special features of gas burners for cooking ranges having multiple flame rings

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

The invention provides a burner fire cover, a burner and a gas stove, which can improve the combustion efficiency and avoid the tempering phenomenon. A burner fire cover comprising: a central concentrator burner cap unit comprising: the central atmospheric fire cover is arranged at the center, and the central infrared fire cover is arranged around the central atmospheric fire cover; and at least two outer loop energy gathering combustor fire cover units, from interior to exterior in proper order around the central energy gathering combustor fire cover unit setting, every outer loop energy gathering combustor fire cover unit includes: the fire cover comprises an annular atmospheric fire cover arranged on the inner side and an annular infrared fire cover arranged on the outer side, wherein the height of the central infrared fire cover is 1.2-1.5 times that of the central atmospheric fire cover; the height of the annular infrared fire cover is 1.2-1.5 times of that of the annular atmospheric fire cover; the fire holes on the central infrared fire cover and the annular infrared fire cover are in the shape of thin waists, wherein the inner diameter of each thin waists gradually decreases and then gradually increases from the bottom of each fire hole to the top.

Description

Burner fire cover, burner and gas stove
Technical Field
The invention belongs to the field of combustion equipment, and particularly relates to a burner fire cover, a burner and a gas stove.
Background
Although a burner comprising a combination of an infrared burner and an atmospheric burner has a high efficiency and a low pollution to some extent, the following problems are present in the conventional art: 1. the combination mode is too simple, the atmospheric combustion structure and the infrared combustion structure independently act, and complementary organic combination integrity is not formed, so that the improvement of the efficiency of the combustor mainly depends on the action of the infrared combustor, and the improvement space is limited; 2. under the condition of large load, the infrared burner is easy to cause backfire, thereby causing potential safety hazard.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a burner fire cover, a burner, and a gas range, which can improve combustion efficiency and prevent a backfire phenomenon.
In order to achieve the purpose, the invention adopts the following scheme:
< burner fire lid >
The invention provides a burner fire cover, which is characterized by comprising: a central concentrator burner cap unit comprising: the central atmospheric fire cover is arranged at the center, and the central infrared fire cover is arranged around the central atmospheric fire cover; and at least two outer loop energy gathering combustor fire cover units, from interior to exterior in proper order around the central energy gathering combustor fire cover unit setting, every outer loop energy gathering combustor fire cover unit includes: the fire cover comprises an annular atmospheric fire cover arranged on the inner side and an annular infrared fire cover arranged on the outer side, wherein the height of the central infrared fire cover is 1.2-1.5 times that of the central atmospheric fire cover; the height of the annular infrared fire cover is 1.2-1.5 times of that of the annular atmospheric fire cover; the fire holes on the central infrared fire cover and the annular infrared fire cover are in the shape of thin waists, wherein the inner diameter of each thin waists gradually decreases and then gradually increases from the bottom of each fire hole to the top.
The beneficial effect of above scheme does:
the burner fire cover provided by the invention is characterized in that a multiple energy-gathering structure is formed by a central atmospheric fire cover, a central infrared fire cover with the height being 1.2-1.5 times of the height of the central atmospheric fire cover, an annular atmospheric fire cover and an annular infrared fire cover with the height being 1.2-1.5 times of the height of the annular atmospheric fire cover, and the infrared fire cover positioned on the outer side can fully gather high-temperature flue gas generated by the atmospheric fire cover positioned on the inner side through the structural arrangement, so that the diffusion of the internal high-temperature flue gas to the periphery is prevented, the residence time of the high-temperature flue gas at the bottom of a pot is effectively prolonged, and the heat exchange between the high-temperature flue gas and the bottom of the pot is further enhanced; on the other hand, the lower surface of the infrared fire cover porous medium radiation plate is heated to a certain extent, so that the temperature of premixed gas is increased, and the combustion efficiency can be effectively improved. Compared with the existing like products, the burner fire cover provided by the invention has the advantages of smaller heat loss and higher heat efficiency. In addition, in the invention, after the infrared fire cover is set to be higher than the atmospheric fire cover, the fire hole structure of the infrared fire cover is designed to be in a thin waist shape with the inner diameter gradually decreasing from the bottom of the fire hole to the top and then gradually increasing, so that after gas enters the fire hole, a high-flow-rate area is generated at the thin waist, the gas flow rate is far higher than the flame propagation speed, the dynamic tempering during combustion is effectively avoided while energy collection is realized, and the stability of the combustion process is practically ensured.
Preferably, in the burner fire cover according to the invention, there may also be provided the feature that: the height of the central infrared type fire cover is 1.2-1.3 times of that of the central atmospheric type fire cover, and the height of the annular infrared type fire cover is 1.2-1.3 times of that of the annular atmospheric type fire cover, so that the energy gathering effect is better.
Preferably, the burner fire cover according to the present invention may further include: the minimum position of the inner diameter of the fire hole on the central infrared type fire cover and the annular infrared type fire cover is 10-40% of the diameter of the inlet hole, so the anti-tempering effect is better.
Preferably, in the burner fire cover according to the invention, there may also be provided the feature that: the minimum inner diameter position of the fire hole on the central infrared type fire cover and the annular infrared type fire cover is 20-30% of the diameter of the inlet hole, so the anti-tempering effect is optimal.
Preferably, in the burner fire cover according to the invention, there may also be provided the feature that: the central energy-gathering burner fire cover unit and the adjacent outer ring energy-gathering burner fire cover unit are arranged at a certain distance, and the distance is 10-20% of the outer diameter of the central energy-gathering burner fire cover unit; the central atmosphere type fire cover and the central infrared type fire cover are arranged at a certain distance, and the distance is 30-50% of the width of the central infrared type fire cover; the fire cover units of adjacent outer ring energy gathering burners are arranged at a certain distance, and the distance is 30-50% of the width of the annular infrared fire cover; the annular atmosphere type fire cover and the annular infrared type fire cover are arranged at a certain distance, and the distance is 30-50% of the width of the annular infrared type fire cover, so that the energy gathering effect is better.
Preferably, in the burner fire cover according to the invention, there may also be provided the feature that: on the central atmospheric fire cover, fire holes are densely distributed in the middle area; on the annular atmospheric fire cover, the fire holes are uniformly distributed along the circumferential direction; on central infrared formula fire lid, cyclic annular infrared formula fire lid, the fire hole is all along the even densely covered of circumference, and it is better to gather the energy effect like this.
< burner >
Further, the present invention also provides a burner, characterized by comprising: burner fire cover as described in < burner fire cover > above.
< gas kitchen Range >
Further, the present invention also provides a gas range, comprising: the burner described in < burner > above.
Drawings
Fig. 1 is a perspective view of a burner according to an embodiment of the present invention;
FIG. 2 is a top view of a combustor according to an embodiment of the present invention;
FIG. 3 is a partial exploded view of a burner according to an embodiment of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 2;
FIG. 5 is a cross-sectional view of FIG. 2 taken at an angle of 45 from the A-A direction;
fig. 6 is a schematic structural view of an infrared type fire hole according to an embodiment of the present invention.
Detailed Description
The burner fire cover, the burner and the gas cooker according to the present invention will be described in detail with reference to the accompanying drawings.
< example >
As shown in fig. 1 to 5, the burner 10 includes a burner fire cover 20, a gas mixing chamber 30, an injection pipe 40, and a mounting member 50.
The burner cap 20 is mounted on top of the mixing chamber 30 and comprises a central concentrator burner cap unit 21 and two outer ring concentrator burner cap units 22.
The center concentrated burner fire cover unit 21 includes a center atmospheric type fire cover 211 and a center infrared type fire cover 212.
The central atmosphere type fire cover 211 is arranged at the central position in a disc shape, and fire holes are densely distributed on the surface.
The central infrared fire cover 212 is disposed around the central atmospheric fire cover 211, and has a ring shape, and the height of the ring shape is 1.3 times of the height of the central atmospheric fire cover 211. As shown in fig. 4 to 6, fire holes 212a are uniformly and densely distributed in the central infrared fire cover 212 along the circumferential direction, and the fire holes 212a are in the shape of a thin waist whose inner diameter gradually decreases and then gradually increases from the bottom of the hole upward. In this embodiment, the central infrared fire cover 212 is made of a cordierite honeycomb ceramic infrared combustion plate or a metal honeycomb infrared heating plate, and the minimum inner diameter of the fire hole 212a is 20% of the bottom inlet aperture (inner diameter of the hole bottom).
In this embodiment, the central atmospheric fire cover 211 and the central infrared fire cover 212 are disposed at a certain distance, and the distance is 30% of the width of the central infrared fire cover 212.
The two outer ring energy-gathering burner fire cover units 22 are in a concentric ring shape and are sequentially arranged around the central energy-gathering burner fire cover unit 21 from inside to outside. The adjacent outer ring energy gathering burner fire cover units 22 are arranged at a certain distance, and the distance is 30% of the width of the ring infrared type fire cover 222.
Each outer ring concentrator burner cap unit 22 includes a ring atmospheric cap 221 and a ring infrared cap 222. The annular atmospheric fire cover 221 and the annular infrared fire cover 222 are concentric and annular, and are arranged at a certain distance, and the distance is 30% of the width of the annular infrared fire cover 222. As shown in fig. 1 to 3, a circle of fire holes are uniformly distributed on the annular atmospheric fire cover 221 along the circumferential direction. The annular infrared fire cover 222 is disposed outside the annular atmospheric fire cover 221, and has a height 1.3 times the height of the annular atmospheric fire cover 221. As shown in fig. 4 to 6, the ring-shaped infrared fire cover 222 has fire holes 222a uniformly and densely distributed along the circumferential direction, and the fire holes 222a have a shape of a thin waist in which the inner diameter gradually decreases and then gradually increases from the bottom of the hole toward the top. In this embodiment, the annular infrared fire cover 222 is made of a cordierite honeycomb ceramic infrared combustion plate or a metal honeycomb infrared heating plate, and the minimum inner diameter of the fire hole 222a is 20% of the bottom inlet aperture (inner diameter of the hole bottom).
As shown in fig. 4 and 5, the gas mixing chamber 30 includes a first gas mixing chamber 31 correspondingly connected to the central atmospheric fire cover 211, a second gas mixing chamber 32 correspondingly connected to the central infrared fire cover 212, a third gas mixing chamber 33 correspondingly connected to the annular atmospheric fire cover 221 located at the inner ring, a fourth gas mixing chamber 34 correspondingly connected to the annular infrared fire cover 222 located at the inner ring, a fifth gas mixing chamber 35 correspondingly connected to the annular atmospheric fire cover 221 located at the outer ring, and a sixth gas mixing chamber 36 correspondingly connected to the annular infrared fire cover 222 located at the outer ring. The six air mixing cavities are all isolated from each other.
The ejector pipe 40 is communicated with the bottom of the gas mixing cavity 30 and comprises a first ejector pipe 41 communicated with the first gas mixing cavity 31, a second ejector pipe 42 communicated with the second gas mixing cavity 32, a third ejector pipe 43 communicated with the third gas mixing cavity 33, a fourth ejector pipe 44 communicated with the fourth gas mixing cavity 34, a fifth ejector pipe 45 communicated with the fifth gas mixing cavity 35 and a sixth ejector pipe 46 communicated with the sixth gas mixing cavity 36.
As shown in fig. 2, the mounting member 50 is cross-shaped and detachably connects the burner cap 20, the gas mixing chamber 30, and the injection pipe 40 to form an integral body.
The above is a specific structure of the burner 10 according to the present embodiment, and the operation process thereof is based on the structure: premixed fuel gas respectively enters a first air mixing cavity 31, a second air mixing cavity 32, a third air mixing cavity 33, a third four air mixing cavity 34 and a fifth air mixing cavity 35 from a first ejector pipe 41, a second ejector pipe 42, a third ejector pipe 43, a fourth ejector pipe 44, a fifth ejector pipe 45 and a sixth ejector pipe 46, and then is sprayed and combusted from a central atmospheric fire cover 211, a central infrared fire cover 212, an annular atmospheric fire cover 221, an inner annular infrared fire cover 222, an annular atmospheric fire cover 221 and an annular infrared fire cover 222, which are positioned at the top, of the inner ring. In this process, the central atmospheric fire cover 211 and the central infrared fire cover 212 form a first-stage energy-gathering structure, the annular atmospheric fire cover 221 and the annular infrared fire cover 222 located at the inner ring form a second-stage energy-gathering structure, and the annular atmospheric fire cover 221 and the annular infrared fire cover 222 located at the outer ring form a third-stage energy-gathering structure. The three-level energy accumulation structure effectively accumulates energy through the coupling effect of the atmosphere type and infrared type fire cover special structures, prevents heat from dissipating all around, effectively improves the combustion heat efficiency, and practically avoids the tempering phenomenon.
Further, the present embodiment also provides a gas range, which includes the burner 10, the housing, the panel, the gas valve, the switch, and the like described above.
The above is merely an illustration of the technical solution of the present invention. The burner fire cover, burner and gas stove according to the present invention are not limited to the structure described in the above embodiments, but are subject to the scope defined by the claims. Any modification or supplement or equivalent replacement made by the person skilled in the art on the basis of the present invention is within the scope of the claims of the present invention.

Claims (8)

1. A burner fire cover, comprising:
a central concentrator burner cap unit comprising: the central atmospheric fire cover is arranged at the center, and the central infrared fire cover is arranged around the central atmospheric fire cover; and
at least two outer loop energy gathering combustor fire cover units, from interior to exterior in proper order around the central energy gathering combustor fire cover unit sets up, every outer loop energy gathering combustor fire cover unit includes: an annular atmospheric fire cover arranged at the inner side, an annular infrared fire cover arranged at the outer side,
wherein the height of the central infrared fire cover is 1.2-1.5 times of that of the central atmospheric fire cover;
the height of the annular infrared fire cover is 1.2-1.5 times of that of the annular atmospheric fire cover;
the fire holes on the central infrared fire cover and the annular infrared fire cover are in the shape of thin waists, wherein the inner diameter of each thin waists gradually decreases from the bottom of each hole to the top of each hole, and then gradually increases.
2. The burner fire cover of claim 1, wherein:
the height of the central infrared fire cover is 1.2-1.3 times of that of the central atmospheric fire cover, and the height of the annular infrared fire cover is 1.2-1.3 times of that of the annular atmospheric fire cover.
3. The burner fire cover of claim 1, wherein:
wherein the minimum inner diameter position of the fire hole on the central infrared fire cover and the annular infrared fire cover is 10-40% of the diameter of the inlet hole.
4. The burner fire cover of claim 1, wherein:
wherein the minimum inner diameter position of the fire hole on the central infrared fire cover and the annular infrared fire cover is 20-30% of the diameter of the inlet hole.
5. The burner fire cover of claim 1, wherein:
the central energy-gathering burner fire cover unit and the adjacent outer ring energy-gathering burner fire cover unit are arranged at a certain distance, and the distance is 10-20% of the outer diameter of the central energy-gathering burner fire cover unit;
the central atmospheric fire cover and the central infrared fire cover are arranged at a certain distance, and the distance is 30-50% of the width of the central infrared fire cover;
the fire cover units of the adjacent outer ring energy gathering burners are arranged at a certain distance, and the distance is 30-50% of the width of the annular infrared fire cover;
the annular atmospheric fire cover and the annular infrared fire cover are arranged at a certain distance, and the distance is 30-50% of the width of the annular infrared fire cover.
6. The burner fire cover of claim 1, wherein:
wherein, on the central atmospheric fire cover, fire holes are densely distributed in the middle area;
on the annular atmospheric fire cover, fire holes are uniformly distributed along the circumferential direction;
and fire holes are uniformly and densely distributed on the central infrared type fire cover and the annular infrared type fire cover along the circumferential direction.
7. A burner, comprising:
the burner fire cover of any one of claims 1 to 6.
8. A gas range, comprising:
the burner of claim 7.
CN202011359915.3A 2020-11-27 2020-11-27 Burner fire cover, burner and gas stove Active CN112432174B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011359915.3A CN112432174B (en) 2020-11-27 2020-11-27 Burner fire cover, burner and gas stove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011359915.3A CN112432174B (en) 2020-11-27 2020-11-27 Burner fire cover, burner and gas stove

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Publication Number Publication Date
CN112432174A CN112432174A (en) 2021-03-02
CN112432174B true CN112432174B (en) 2021-11-16

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