CN110207154B - Fire cover for burner and burner - Google Patents
Fire cover for burner and burner Download PDFInfo
- Publication number
- CN110207154B CN110207154B CN201811033530.0A CN201811033530A CN110207154B CN 110207154 B CN110207154 B CN 110207154B CN 201811033530 A CN201811033530 A CN 201811033530A CN 110207154 B CN110207154 B CN 110207154B
- Authority
- CN
- China
- Prior art keywords
- secondary air
- air inlet
- hole
- fire
- inlet pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007789 gas Substances 0.000 claims description 51
- 239000002737 fuel gas Substances 0.000 claims description 10
- 230000001502 supplementing effect Effects 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 description 18
- 244000171022 Peltophorum pterocarpum Species 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000003754 machining Methods 0.000 description 7
- 239000013589 supplement Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- 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
Landscapes
- 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 discloses a fire cover for a combustor and the combustor, which comprise a fire cover body and a secondary air inlet pipe, wherein the fire cover body is provided with an annular gas cavity, the annular gas cavity comprises an inner annular side wall and an outer annular side wall, the inner annular side wall is provided with a plurality of first round holes along the circumferential direction, the outer annular side wall is provided with a plurality of second round holes along the circumferential direction, the secondary air inlet pipe is provided with a plurality of second round holes and is respectively connected with the corresponding first round holes and the second round holes, the secondary air inlet pipe and the first round holes and/or the second round holes are in clearance fit to form an annular fire hole, and the secondary air inlet pipe and the first round holes and/or the second round holes are in clearance fit to form a hollow annular fire hole.
Description
Technical Field
The invention belongs to the technical field of gas stoves, and particularly relates to a fire cover for a burner and the burner.
Background
The gas cooker is a kitchen utensil which is heated by direct fire by using gas fuel such as liquefied petroleum gas, artificial gas, natural gas and the like.
The gas stove is also called a stove plate and is mainly divided into a liquefied gas stove, a gas stove and a natural gas stove according to a gas source; gas stoves are classified into single stoves, double stoves and multi-hole stoves according to stove holes.
The primary air coefficient of the existing atmospheric burner is about 05-0.7, so the supplement of secondary air is a key factor affecting the performance of the burner. The existing secondary air is mostly supplemented through dislocation distribution of fire holes, and the following problems exist in the mode of supplementing secondary air: 1. because of the limitation of the size of the fire cover and the size of the fire hole, the distance between the fire hole and the fire hole is very small and is about 3-6 mm, secondary air is difficult to supplement, and if the fire hole is provided with a flame stabilizing hole, the phenomenon of yellow flame is easy to occur, so that the improvement of the smoke performance and the thermal efficiency is influenced; 2. for secondary air supplement, the single main fire hole is generally smaller, the area is 2.5-5.4 mm 2, demoulding or machining is not facilitated, and the production cost is high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a fire cover for a burner and the burner.
The technical scheme of the invention is realized as follows:
The embodiment of the invention provides a fire cover for a combustor, which comprises a fire cover body and a secondary air inlet pipe, wherein the fire cover body is provided with an annular gas chamber, the annular gas chamber comprises an inner ring side wall and an outer ring side wall, the inner ring side wall is provided with a plurality of first round holes along the circumferential direction, the outer ring side wall is provided with a plurality of second round holes along the circumferential direction, the secondary air inlet pipe is provided with a plurality of corresponding first round holes and second round holes and is respectively connected with the corresponding first round holes and the corresponding second round holes, the secondary air inlet pipe and the first round holes and/or the second round holes are in clearance fit to form an annular fire hole, and the secondary air inlet pipe is used for supplementing secondary air to the annular fire hole.
Preferably, when the secondary air inlet pipe is in clearance fit with the first round hole or the second round hole, one end of the secondary air inlet pipe is in clearance fit with the first round hole or the second round hole to form an annular fire hole, and the other end of the secondary air inlet pipe is in clearance fit with the second round hole or the first round hole and is communicated with the outside to form a secondary air inlet hole.
Preferably, the included angle between the axis of the first round hole or the axis of the second round hole and the horizontal line is 0-60 degrees.
Preferably, the end face of the first round hole or the second round hole is an inclined plane.
Preferably, when the secondary air inlet pipe is in clearance fit with the first round hole and the second round hole, the annular gas chamber further comprises a bottom wall, the secondary air inlet pipe comprises a first secondary air inlet pipe and a second secondary air inlet pipe, one end of the first secondary air inlet pipe is in clearance fit with the first round hole to form an annular fire hole, the other end of the first secondary air inlet pipe is fixed on the bottom wall and communicated with the outside to form a secondary air inlet hole, one end of the second secondary air inlet pipe is in clearance fit with the second round hole to form an annular fire hole, and the other end of the second secondary air inlet pipe is fixed on the bottom wall and communicated with the outside to form a secondary air inlet hole.
Preferably, the bottom wall is provided with an air inlet for introducing fuel gas into the annular fuel gas chamber and the annular fire hole.
Preferably, the bottom wall is upwards protruded to form a secondary air inlet channel, and two sides of the protrusion are respectively used for fixing the first secondary air inlet pipe and the second secondary air inlet pipe.
Preferably, the included angle between the axis of the first round hole and the horizontal line is 10-60 degrees, and the included angle between the axis of the second round hole and the horizontal line is 10-60 degrees.
Preferably, the diameter of the first round hole is 3-5 mm, and the diameter of the second round hole is 3-5 mm.
The embodiment of the invention also provides a burner, which comprises the fire cover for the burner and a burner assembly, wherein the fire cover for the burner is arranged on the burner assembly.
Compared with the prior art, the embodiment of the invention provides a fire cover for a combustor and the combustor, the fire cover comprises a fire cover body and a secondary air inlet pipe, the fire cover body is provided with an annular gas cavity, the annular gas cavity comprises an inner annular side wall and an outer annular side wall, the inner annular side wall is provided with a plurality of first round holes along the circumferential direction, the outer annular side wall is provided with a plurality of second round holes along the circumferential direction, the secondary air inlet pipe is provided with a plurality of second round holes and is respectively connected with the corresponding first round holes and the second round holes, the secondary air inlet pipe is in clearance fit with the first round holes and/or the second round holes to form an annular fire hole, and the secondary air inlet pipe is used for supplementing the annular fire hole with secondary air.
Drawings
FIG. 1 is a schematic view showing a fire cover for a burner according to embodiment 1 of the present invention;
FIG. 2 is a side view of a fire cover for a burner according to embodiment 1 of the present invention;
FIG. 3 is a bottom view of a fire cover for a burner according to embodiment 1 of the present invention;
FIG. 4 is a cross-sectional view of a fire cover for a burner according to embodiment 1 of the present invention;
FIG. 5 is a first cross-sectional view of a fire cover for a burner according to embodiment 2 of the present invention;
FIG. 6 is a second cross-sectional view of a fire cover for a burner according to embodiment 2 of the present invention;
fig. 7 is a sectional view of a fire cover for a burner according to embodiment 3 of the present invention.
The reference numerals are as follows:
1-fire cover body, 11-annular gas chamber, 111-inner annular side wall, 112-outer annular side wall, 113-bottom wall, 114-air inlet, 115-secondary air inlet channel, 2-secondary air inlet pipe, 21-first secondary air inlet pipe, 22-second secondary air inlet pipe, 3-first round hole, 4-second round hole.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment 1 of the invention provides a fire cover for a burner, as shown in fig. 1-4, the embodiment 1 adopts an outward expansion fire hole, which comprises a fire cover body 1 and a secondary air inlet pipe 2, the bottom of the fire cover body 1 is inwards sunken to form an annular gas chamber 11, the annular gas chamber 11 comprises an inner annular side wall 111 and an outer annular side wall 112, an opening at the bottom of the annular gas chamber 11 is used for entering fuel gas, the inner annular side wall 111 is provided with a plurality of first round holes 3 along the circumferential direction, the outer annular side wall 112 is provided with a plurality of second round holes 4 along the circumferential direction, the secondary air inlet pipe 2 is provided with a plurality of second round holes 4 and is respectively connected with the corresponding first round holes 3 and the second round holes 4, one end of the secondary air inlet pipe 2 is in clearance fit with the second round holes 4 of the outer annular side wall 112 to form an annular fire hole, and the other end of the secondary air inlet pipe 2 is in interference fit with the first round holes 3 of the inner annular side wall 111 and is communicated with the outside to form a secondary air inlet hole.
The secondary air inlet pipe 2 and the second round hole 4 form a hollow annular fire hole, and secondary air can enter the annular fire hole through the secondary air inlet pipe 2 and the outer side of the annular fire hole, so that a secondary air supplementing path is increased, sufficient secondary air can be supplemented to the annular fire hole, the contact area of fuel gas and air is increased, combustion is more sufficient, generation of yellow flame is reduced, and further improvement of combustion performance is facilitated.
Wherein, a plurality of first round holes 3 and a plurality of second round holes 4 are equidistant setting, can flow in the secondary air to annular fire hole between the adjacent second round hole 4.
Referring to fig. 4, the second round hole 4 is arranged close to the top surface of the fire cover body 1, the end surface of the second round hole 4 is inclined inwards, or the axis of the second round hole 4 forms a certain included angle with the horizontal line, the included angle is generally 0-60 °, so that the direction of the second round hole 4 is changed from the horizontal direction to the inclined upper direction, the annular fire hole forms an included angle with the pot body to be heated, the contact area of flame and the pot body can be improved, and the combustion efficiency is further improved.
The diameter of the second round hole 4 is 3-5 mm, the diameter of the secondary air inlet pipe 2 is 1-3 mm, the diameter of the secondary air inlet pipe 2 is slightly smaller than the diameter of the second round hole 4, and the secondary air inlet pipe 2 and the second round hole 4 are in clearance fit to form an annular fire hole.
In the prior art, the diameter of the fire holes of the fire cover is generally 1.8-2.5 mm, the distance between the fire holes is generally 3-6 mm, the secondary air of the fire cover enters from one side, the secondary air can only enter the fire holes from the outer sides of the fire holes, the distance between the fire holes is smaller, the secondary air entering amount of each fire hole is difficult to ensure, the yellow flame phenomenon is easily caused, and the smoke performance and the heat efficiency are influenced. In addition, the diameter of the fire hole is smaller, which is not beneficial to demoulding and machining, and the production cost is higher.
The secondary air inlet pipe 2 of this embodiment 1 stretches into the second round hole 4, the entering mode of the secondary air of fire cover is changed into two-sided entering, specifically, the supplementary route of secondary air is, on the one hand, supplement secondary air through the secondary air inlet pipe 2, on the other hand secondary air enters from the fire cover outside, namely, along the lateral wall inflow annular fire hole between two adjacent second round holes 4, secondary air enters from the both sides of annular fire hole respectively, can supplement sufficient secondary air to annular fire hole, make the area of contact of gas and air increase, the burning is more abundant, thereby reduce the production of yellow flame, be favorable to further promotion of combustion performance, and, like this, set up the diameter 3 ~ 5mm of second round hole 4, be convenient for drawing of patterns and machining, can reduce manufacturing cost.
The working process of the embodiment is as follows: the gas gets into annular gas cavity 11 from the bottom of fire lid body 1, gas and primary air mix at annular gas cavity 11, the mixed gas of gas and primary air outwards flows and gets into the annular fire hole that secondary air-supply line 2 and second round hole 4 formed, in the in-process of burning, the secondary air gets into annular fire hole from the fire lid inboard through secondary air-supply line 2, simultaneously, the secondary air outside the fire lid flows into annular fire hole along the lateral wall between the adjacent second round hole 4, for the burning of gas improves sufficient secondary air, thereby improve combustion efficiency.
Example 2
Embodiment 2 of the present invention provides a fire cover for a burner, as shown in fig. 5 and 6, embodiment 2 is a cohesive fire hole, which includes a fire cover body 1 and a secondary air inlet pipe 2, the bottom of the fire cover body 1 is recessed inwards to form an annular gas chamber 11, the annular gas chamber 11 includes an inner annular sidewall 111 and an outer annular sidewall 112, an opening at the bottom of the annular gas chamber 11 is used for entering fuel gas, the inner annular sidewall 111 is circumferentially provided with a plurality of first round holes 3, the outer annular sidewall 112 is circumferentially provided with a plurality of second round holes 4, the secondary air inlet pipe 2 is provided with a plurality of second round holes 4 and is respectively connected with the corresponding first round holes 3 and the second round holes 4, one end of the secondary air inlet pipe 2 is in clearance fit with the first round holes 3 of the inner annular sidewall 111, and the other end is in interference fit with the second round holes 4 of the outer annular sidewall 112 and is communicated with the outside to form secondary air inlet holes.
The secondary air inlet pipe 2 and the first round hole 3 form a hollow annular fire hole, and secondary air can enter the annular fire hole through the secondary air inlet pipe 2 and the outer side of the annular fire hole, so that a secondary air supplementing path is increased, sufficient secondary air can be supplemented to the annular fire hole, the contact area of fuel gas and air is increased, combustion is more sufficient, generation of yellow flame is reduced, and further improvement of combustion performance is facilitated.
Wherein, a plurality of first round holes 3 and a plurality of second round holes 4 are equidistant setting, can flow in the secondary air to annular fire hole between the adjacent first round hole 3.
Referring to fig. 6, a plurality of first round holes 3 are arranged near the top surface of the fire cover body 1, the end surfaces of the first round holes 3 incline outwards, or the axis of the first round holes 3 forms a certain included angle with the horizontal line, the included angle is generally 0-60 degrees, so that the orientation of the first round holes 3 is changed from the horizontal direction to the inclined upper direction, the annular fire holes form an included angle with the pot body to be heated, the contact area of flame and the pot body can be improved, and the combustion efficiency is further improved.
The diameter of the first round hole 3 is 3-5 mm, the diameter of the secondary air inlet pipe 2 is 1-3 mm, the diameter of the secondary air inlet pipe 2 is slightly smaller than the diameter of the first round hole 3, and a gap between the secondary air inlet pipe 2 and the first round hole 3 is an annular fire hole.
In the prior art, the diameter of the fire holes of the fire cover is generally 1.8-2.5 mm, the distance between the fire holes is generally 3-6 mm, the secondary air of the fire cover enters from one side, the secondary air can only enter the fire holes from the outer sides of the fire holes, the secondary air entering amount of each fire hole is difficult to ensure due to smaller distance between the fire holes, the yellow flame phenomenon is easy to cause, the improvement of the smoke performance and the heat efficiency is influenced, in addition, the diameter of the fire holes is smaller, the demoulding and the machining are not facilitated, and the production cost is higher.
The secondary air inlet pipe 2 of this embodiment 2 extends into the first round hole 3, the secondary air inlet mode of the fire cover is changed into two-sided inlet, specifically, the supplementary route of secondary air is, on the one hand, make the secondary air outside the fire cover enter the annular fire hole through the secondary air inlet pipe 2, on the other hand, secondary air enters from the inner side of the fire cover, namely, along the lateral wall between two adjacent first round holes 3, flow into the annular fire hole, secondary air enters from the inside and outside both sides of the annular fire hole respectively, can supplement sufficient secondary air to the annular fire hole, make the contact area of gas and air increase, the burning is more abundant, thereby reduce the production of yellow flame, be favorable to further promoting of combustion performance, and, set up the diameter 3 ~ 5mm of first round hole 3 like this, be convenient for drawing of patterns and machining, can reduce manufacturing cost.
The working process of the embodiment is as follows: the gas gets into annular gas cavity 11 from the bottom of fire lid body 1, and gas and primary air mix at annular gas cavity 11, and the gas mixture of gas and primary air inwards flows and gets into the annular fire hole that secondary air-inlet pipe 2 and first round hole 3 formed, and at the in-process of burning, secondary air gets into annular fire hole from the fire lid outside through secondary air-inlet pipe 2, simultaneously, the inboard secondary air of fire lid flows into annular fire hole along the lateral wall between the adjacent round hole 3, improves sufficient secondary air for the burning of gas to improve combustion efficiency.
Example 3
Embodiment 3 of the present invention provides a fire cover for a burner, as shown in fig. 7, embodiment 3 is an outward expansion and cohesive combined fire hole, which includes a fire cover body 1 and a secondary air inlet pipe 2, an annular gas chamber 11 is formed in the interior of the fire cover body 1, the annular gas chamber 11 includes an inner annular side wall 111, an outer annular side wall 112 and a bottom wall 113, the bottom wall 113 is provided with an air inlet hole 114, and the air inlet hole 114 is used for introducing fuel gas into the annular gas chamber 11 and the annular fire hole.
The secondary air inlet pipe 2 comprises a first secondary air inlet pipe 21 and a second secondary air inlet pipe 22, one end of the first secondary air inlet pipe 21 is in clearance fit with the first round hole 3 to form an annular fire hole, the other end of the first secondary air inlet pipe is fixed on the bottom wall 113 and communicated with the outside to form a secondary air inlet hole, one end of the second secondary air inlet pipe 22 is in clearance fit with the second round hole 4 to form an annular fire hole, and the other end of the second secondary air inlet pipe is fixed on the bottom wall 113 and communicated with the outside to form a secondary air inlet hole.
According to the invention, the first secondary air inlet pipe 21 and the second secondary air inlet pipe 22 are respectively in clearance fit with the first round hole 3 and the second round hole 4 to form the hollow annular fire hole, and secondary air can enter the annular fire hole through the outer sides of the first secondary air inlet pipe 21, the second secondary air inlet pipe 22 and the annular fire hole respectively, so that a secondary air supplementing path is increased, sufficient secondary air can be supplemented to the annular fire hole, the contact area of fuel gas and air is increased, combustion is more sufficient, and therefore, the generation of yellow flame is reduced, and further improvement of combustion performance is facilitated.
Wherein, the bottom wall 113 is upwardly protruded to form a secondary air inlet channel 115, the secondary air inlet channel 115 is convenient for secondary air to enter the first secondary air inlet pipe 21 and the second secondary air inlet pipe 22, and simultaneously, two sides of the protrusion are convenient for fixing the first secondary air inlet pipe 21 and the second secondary air inlet pipe 22.
Wherein, first round hole 3, second round hole 4 are equidistant setting.
Referring to fig. 7, the first round hole 3 and the second round hole 4 are all close to the top surface of the fire cover body 1, the outer end of the second round hole 4 located on the outer ring side wall 112 is inclined upwards, the outer end of the first round hole 3 located on the inner ring side wall 111 is inclined upwards, that is, the axes of the first round hole 3 and the second round hole 4 are all at a certain included angle with the horizontal line, the included angle is generally 10-60 °, so that the directions of the first round hole 3 and the second round hole 4 are changed from the horizontal direction to be oriented obliquely upwards, the annular fire hole is formed with the pot body to be heated, the contact area of flame and the pot body can be improved, the combustion efficiency is further improved, and in addition, the first round hole 3 and the second round hole 4 are all inclined to be convenient for fixing the first secondary air inlet pipe 21 and the second secondary air inlet pipe 22.
The diameters of the first round hole 3 and the second round hole 4 are 3-5 mm, the diameters of the first secondary air inlet pipe 21 and the second secondary air inlet pipe 22 are 1-3 mm, the diameters of the first secondary air inlet pipe 21 and the second secondary air inlet pipe 22 are slightly smaller than the diameters of the first round hole 3 and the second round hole 4 respectively, and gaps between the first secondary air inlet pipe 21 and the second secondary air inlet pipe 22 and the first round hole 3 and the second round hole 4 are annular fire holes respectively.
In the prior art, the diameter of the fire holes of the fire cover is generally 1.8-2.5 mm, the distance between the fire holes is generally 3-6 mm, the secondary air of the fire cover enters from one side, the secondary air can only enter the fire holes from the outer sides of the fire holes, the secondary air entering amount of each fire hole is difficult to ensure due to smaller distance between the fire holes, the yellow flame phenomenon is easy to cause, the improvement of the smoke performance and the heat efficiency is influenced, in addition, the diameter of the fire holes is smaller, the demoulding and the machining are not facilitated, and the production cost is higher.
In this embodiment 3, one end of the first secondary air inlet pipe 21 is in clearance fit with the first round hole 3 to form an annular fire hole, the other end of the first secondary air inlet pipe is fixed on the bottom wall 113 and is communicated with the outside to form a secondary air inlet hole, one end of the second secondary air inlet pipe 22 is in clearance fit with the second round hole 4 to form an annular fire hole, the other end of the second secondary air inlet pipe is fixed on the bottom wall 113 and is communicated with the outside to form a secondary air inlet hole, so that the single-side entering mode of secondary air of each annular fire hole is changed into two-side entering mode, specifically, for the annular fire hole of the outer annular side wall 112, the secondary air supplementing path is that, on one hand, secondary air outside the fire cover enters the second secondary air inlet pipe 22 along the secondary air inlet channel 115 and then enters the annular fire hole along the second secondary air inlet pipe 22, and on the other hand enters the annular fire hole along the side wall between two adjacent second round holes 4, and secondary air enters from the inner side and outer side of the annular fire hole of the outer annular side wall 112 respectively.
For the annular fire hole of the inner annular side wall 111, the secondary air is supplemented by making the secondary air outside the fire cover enter the first secondary air inlet pipe 21 along the secondary air inlet channel 115 on the one hand and enter the annular fire hole along the first secondary air inlet pipe 21 on the other hand, and on the other hand, the secondary air enters from the inner side of the fire cover, namely flows into the annular fire hole along the side wall between two adjacent first round holes 3, and enters from the inner side and the outer side of the annular fire hole of the inner annular side wall 111 respectively.
Therefore, the annular flame holes of the inner annular side wall 111 and the outer annular side wall 112 of the annular gas chamber 11 are formed by entering secondary air from two sides, and can supplement sufficient secondary air to the annular flame holes, so that the contact area of gas and air is increased, combustion is more sufficient, generation of yellow flame is reduced, and further improvement of combustion performance is facilitated.
In addition, the diameters of the first round hole 3 and the second round hole 4 are increased to 3-5 mm, so that demolding and machining are facilitated, and production cost can be reduced.
The working process of the embodiment is as follows: the gas enters the annular gas chamber 11 from the air inlet 114 at the bottom of the fire cover body 1, the gas and the primary air are mixed in the annular gas chamber 11, the mixed gas of the gas and the primary air respectively enters the annular fire holes at the inner side and the outer side along the first secondary air inlet pipe 21 and the second secondary air inlet pipe 22, in the combustion process, the outside secondary air respectively enters the two groups of the first secondary air inlet pipe 21 and the second secondary air inlet pipe 22 along the secondary air inlet channel 115, and enters the annular fire holes of the inner annular side wall 111 along the first secondary air inlet pipe 21, and enters the annular fire holes of the outer annular side wall 112 along the second secondary air inlet pipe 22, meanwhile, the secondary air at the inner side of the fire cover flows into the annular fire holes of the inner annular side wall 111 along the side wall between the adjacent first round holes 3, and the secondary air at the outer side of the fire cover flows into the annular fire holes of the outer annular side wall 112 along the side wall between the adjacent second round holes 4, so that the sufficient secondary air is improved for the combustion of the gas, and the combustion efficiency is improved.
Example 4
Embodiment 4 of the present invention provides a burner comprising a fire cover for a burner according to any one of embodiments 1 to 3, a burner assembly on which the fire cover for a burner is disposed.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. The utility model provides a fire lid for combustor, its characterized in that, including fire lid body (1) and secondary air-supply line (2), fire lid body (1) is provided with annular gas cavity (11), annular gas cavity (11) are including inner ring lateral wall (111) and outer loop lateral wall (112), inner ring lateral wall (111) set up a plurality of first round holes (3) along the circumference, outer loop lateral wall (112) set up a plurality of second round holes (4) along the circumference, secondary air-supply line (2) set up a plurality of and be connected with corresponding first round hole (3) and second round hole (4) respectively, secondary air-supply line (2) and first round hole (3) and/or second round hole (4) clearance fit form annular fire hole, secondary air-supply line (2) are used for supplementing the secondary air to annular fire hole.
2. A fire cover for a burner according to claim 1, characterized in that when the secondary air inlet pipe (2) is in clearance fit with the first round hole (3) or the second round hole (4), one end of the secondary air inlet pipe (2) is in clearance fit with the first round hole (3) or the second round hole (4) to form an annular fire hole, and the other end is in interference fit with the second round hole (4) or the first round hole (3) and is communicated with the outside to form a secondary air inlet hole.
3. Fire cover for a burner according to claim 2, characterized in that the axis of the first circular hole (3) or the second circular hole (4) is at an angle of 0-60 ° to the horizontal.
4. Fire cover for a burner according to claim 2, characterized in that the end face of the first circular hole (3) or the second circular hole (4) is beveled.
5. The fire cover for a burner according to claim 1, wherein when the secondary air inlet pipe (2) is in clearance fit with both the first circular hole (3) and the second circular hole (4), the annular gas chamber (11) further comprises a bottom wall (113), the secondary air inlet pipe (2) comprises a first secondary air inlet pipe (21) and a second secondary air inlet pipe (22), one end of the first secondary air inlet pipe (21) is in clearance fit with the first circular hole (3) to form an annular fire hole, the other end of the first secondary air inlet pipe is fixed on the bottom wall (113) and is communicated with the outside to form a secondary air inlet hole, one end of the second secondary air inlet pipe (22) is in clearance fit with the second circular hole (4) to form an annular fire hole, and the other end of the second secondary air inlet pipe is fixed on the bottom wall (113) and is communicated with the outside to form a secondary air inlet hole.
6. Fire cover for a burner according to claim 5, characterized in that the bottom wall (113) is provided with air inlet holes (114), which air inlet holes (114) are used for letting in fuel gas to the annular fuel gas chamber (11) and the annular fire holes.
7. A fire cover for a burner according to claim 6, characterized in that said bottom wall (113) is upwardly convex forming a secondary air intake channel (115), both sides of said convex being for fixing a first secondary air intake duct (21) and a second secondary air intake duct (22), respectively.
8. Fire cover for a burner according to claim 7, characterized in that the angle of the axis of the first circular hole (3) to the horizontal is 10-60 ° and the angle of the axis of the second circular hole (4) to the horizontal is 10-60 °.
9. Fire cover for a burner according to any one of claims 1-8, characterized in that the diameter of the first circular hole (3) is 3-5 mm and the diameter of the second circular hole (4) is 3-5 mm.
10. A burner comprising a fire cover for a burner as claimed in any one of claims 1 to 9, a burner assembly on which the fire cover for a burner is disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033530.0A CN110207154B (en) | 2018-09-05 | 2018-09-05 | Fire cover for burner and burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033530.0A CN110207154B (en) | 2018-09-05 | 2018-09-05 | Fire cover for burner and burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110207154A CN110207154A (en) | 2019-09-06 |
| CN110207154B true CN110207154B (en) | 2024-06-07 |
Family
ID=67780017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811033530.0A Active CN110207154B (en) | 2018-09-05 | 2018-09-05 | Fire cover for burner and burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110207154B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200328077Y1 (en) * | 2003-07-03 | 2003-09-26 | 박명선 | Gas burner |
| CN101398177A (en) * | 2007-09-29 | 2009-04-01 | 浙江帅康电气股份有限公司 | Stove combustor and process for manufacturing combustion disk in combustor |
| CN103994436A (en) * | 2014-05-19 | 2014-08-20 | 宁波方太厨具有限公司 | Upper air inlet type burner for gas stove |
| CN206958913U (en) * | 2017-05-23 | 2018-02-02 | 华帝股份有限公司 | Steady flame combustor |
| CN209026865U (en) * | 2018-09-05 | 2019-06-25 | 华帝股份有限公司 | Fire cover for combustor and combustor |
-
2018
- 2018-09-05 CN CN201811033530.0A patent/CN110207154B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200328077Y1 (en) * | 2003-07-03 | 2003-09-26 | 박명선 | Gas burner |
| CN101398177A (en) * | 2007-09-29 | 2009-04-01 | 浙江帅康电气股份有限公司 | Stove combustor and process for manufacturing combustion disk in combustor |
| CN103994436A (en) * | 2014-05-19 | 2014-08-20 | 宁波方太厨具有限公司 | Upper air inlet type burner for gas stove |
| CN206958913U (en) * | 2017-05-23 | 2018-02-02 | 华帝股份有限公司 | Steady flame combustor |
| CN209026865U (en) * | 2018-09-05 | 2019-06-25 | 华帝股份有限公司 | Fire cover for combustor and combustor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110207154A (en) | 2019-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201184595Y (en) | Cooking utensils combustor | |
| CN201858641U (en) | Gas burner | |
| CN102183016A (en) | Combustor assembly of multi-nozzle gas furnace for complete top air intake | |
| CN206449643U (en) | A kind of upper inlet wind type burner structure fire cover | |
| CN202101234U (en) | Multi-nozzle, complete upper gas-admission gas furnace combustion device assembly | |
| CN201344535Y (en) | Multi-nozzle, high-flow and fully-upper-inlet-air embedded household gas stove burner | |
| CN110207154B (en) | Fire cover for burner and burner | |
| CN205560742U (en) | Fire cover of combustor | |
| CN208042134U (en) | A kind of upper inlet wind high-power burner | |
| CN203869042U (en) | Novel upper air inlet energy-saving furnace end | |
| CN109869768B (en) | Heat shield for kitchen range and kitchen range using same | |
| CN109959005B (en) | Burner for gas stove | |
| CN108644772A (en) | A kind of upper inlet wind type burner | |
| CN209026865U (en) | Fire cover for combustor and combustor | |
| CN204830059U (en) | Stove is fried in flame -out protection of systematic integral type | |
| CN204460307U (en) | Commercial energy-saving gas burner | |
| CN103807855A (en) | Combustor used for gas stove | |
| CN201772461U (en) | Internal rotating burner | |
| CN109869765B (en) | Heat shield for kitchen range and kitchen range using same | |
| CN202166058U (en) | Combustor | |
| CN202303392U (en) | Combustor of gas stove | |
| CN205174362U (en) | Combustor head mechanism and combustor | |
| CN205878165U (en) | Domestic stove burner | |
| CN108709181A (en) | A kind of upper wind inlet type burner | |
| CN215175013U (en) | Three-ring fire burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |