CN109724077B - Fire cover and gas burner using same - Google Patents
Fire cover and gas burner using same Download PDFInfo
- Publication number
- CN109724077B CN109724077B CN201711046460.8A CN201711046460A CN109724077B CN 109724077 B CN109724077 B CN 109724077B CN 201711046460 A CN201711046460 A CN 201711046460A CN 109724077 B CN109724077 B CN 109724077B
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- fire cover
- fire
- outer ring
- secondary air
- inner ring
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- 230000001502 supplementing effect Effects 0.000 claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 10
- 230000007704 transition Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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- Gas Burners (AREA)
Abstract
The invention relates to a fire cover of a gas burner, which comprises a first fire cover body, a second fire cover body and a third fire cover body, wherein the first fire cover body comprises an annular top surface, an inner annular wall and an outer annular wall, wherein the inner annular wall and the outer annular wall extend downwards vertically or obliquely from the inner side edge and the outer side edge of the annular top surface; and also relates to a gas burner using the fire cover. The burner has a simple structure, does not need to additionally arrange a pot bracket, and can increase the central load of the burner without reducing the height of the supporting block by arranging the auxiliary fire hole, and in addition, secondary air can be supplemented from the upper part of the first fire cover body through the secondary air supplementing port, so that the combustion efficiency is improved.
Description
Technical Field
The invention relates to the field of gas stoves, in particular to a fire cover and a gas burner using the fire cover.
Background
The gas burner comprises a base, a gas mixing cavity, an outer ring fire cover and an inner ring fire cover, wherein the gas mixing cavity is arranged above the base, and the outer ring fire cover and the inner ring fire cover are respectively arranged above the gas mixing cavity. The outer ring fire cover is generally annular and comprises an annular top wall, an inner ring wall and an outer ring wall, wherein the inner ring wall and the outer ring wall are formed by respectively extending vertically downwards or obliquely downwards from the inner side edge and the outer side edge of the annular top wall, the inner ring wall and the outer ring wall are surrounded to form a gas mixing cavity, and an outer ring fire outlet hole is formed in the outer ring wall. The inner ring fire cover generally comprises a cylindrical base and a cover body arranged on the base in a covering manner, wherein an inner ring fire outlet hole is formed in the cover body.
There are various ways of improving the combustion effect of the burner, such as a way of increasing the center load by lowering the height of the pan support, and although this way can theoretically improve the combustion efficiency, in actual use, if the pan support is arranged at a lower distance from the bottom of the pan to the fire cover, the combustion will be affected on the other hand, and the combustion efficiency will be reduced.
Therefore, it is currently generally accepted that increasing the supply of secondary air is considered to be the most effective way to increase combustion efficiency in situations where the proportion of primary air cannot be effectively increased due to structural limitations of the injection system. However, the existing burner configuration as described above has limited secondary air supply capability and far from meeting the need for more efficient combustion (75%).
Disclosure of Invention
The invention aims to provide a fire cover of a gas burner capable of effectively improving secondary air supplementing efficiency aiming at the prior art.
The second technical problem to be solved by the invention is to provide a gas burner capable of effectively improving secondary air supplementing efficiency aiming at the prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a fire lid of gas burner, includes annular first fire lid body, and this first fire lid body includes annular top surface and by the inboard edge of this annular top surface, the interior rampart and the outer rampart of the vertical or slope downwardly extending of outside edge, form first mixed air chamber between above-mentioned annular top surface, interior rampart and the outer rampart, and be provided with main fire hole along circumference interval on the above-mentioned outer rampart, its characterized in that, all be equipped with three at least supporting pieces that are used for supporting the pan bottom surface along circumference interval on the annular top surface, each supporting piece all upwards extends, and offered the auxiliary fire hole with above-mentioned first mixed air chamber intercommunication on its medial surface, form the secondary air supply mouth between the adjacent supporting piece.
Preferably, the first fire cover body comprises a first part and a second part, wherein the first part and the second part are arranged at intervals along the circumferential direction of the first fire cover body, the bottoms of the first parts respectively form air inlets, and the bottoms of the second parts are respectively connected through connecting walls.
Further, preferably, the cross section of each first portion is semicircular, and the cross section of each second portion is circular, so that the wall attaching effect of the surfaces of the first portion and the second portion on air can be further optimized, and the secondary air supply efficiency is further improved.
Preferably, each air inlet is respectively connected with one air mixing pipe, and a secondary air supplementing port is formed between adjacent air mixing pipes, and the secondary air supplementing ports are in one-to-one correspondence with the secondary air supplementing ports and are respectively opposite up and down. Therefore, part of air escaping from the secondary air supplementing opening can enter the corresponding secondary air supplementing opening again under the action of the wall attaching effect of the outer ring surface of the outer ring wall, and correspondingly, part of air escaping from the secondary air supplementing opening can enter the corresponding secondary air supplementing opening under the action of the wall attaching effect of the outer ring surface of the outer ring wall, so that the secondary air supplementing efficiency is fully improved.
Preferably, the duct of the auxiliary fire hole extends obliquely upward in the support block relative to the horizontal plane, so that the auxiliary heating of the bottom surface of the cooker can be better performed through the auxiliary fire hole.
Preferably, the auxiliary fire holes are provided at intervals along the width direction of each support block and are parallel to the main fire holes.
Preferably, each supporting block has a hollow structure and is respectively communicated with the first air mixing cavity.
Preferably, the upper ends of the support blocks are respectively bent in a smooth transition outwards and extend obliquely upwards, so that support cambered surfaces are respectively formed on the upper end surfaces of the support blocks, and the support blocks can better support the bottom surface of the cooker.
The invention solves the second technical problem by adopting the technical proposal that: the gas burner with the fire cover comprises a base and an outer ring fire cover and an inner ring fire cover which are arranged on the base, and is characterized in that the outer ring fire cover adopts the fire cover structure, an outer ring cavity is arranged in an inner cavity of the base, an outer ring air vent communicated with the upper outer ring cavity is formed in a top plate of the base, the number of the outer ring air vents is matched with that of the air mixing pipes, and the free ends of the air mixing pipes are respectively connected in the corresponding outer ring air vents, so that the outer ring cavity is communicated with the air mixing pipes through the outer ring air vents.
Preferably, the inner ring fire cover adopts the fire cover structure, an inner ring cavity is further arranged in the inner cavity of the base, and an inner ring vent communicated with the inner ring cavity is further arranged on the top plate of the base; the number of the inner ring air vents is matched with that of the air mixing pipes, and the free ends of the air mixing pipes are respectively connected in the corresponding inner ring air vents, so that the outer ring cavity is communicated with the air mixing pipes through the outer ring air vents, and the secondary air supplementing opening on the inner ring fire cover is opposite to the secondary air supplementing opening on the outer ring fire cover.
Compared with the prior art, the invention has the advantages that: the first fire cover body is provided with the supporting blocks, so that the bottom surface of the cooker can be supported by the supporting blocks, in addition, each supporting block is respectively provided with an auxiliary fire hole, and a secondary air supply port is formed between every two adjacent supporting blocks. The setting of this supporting shoe not only makes the simple structure of combustor need not to establish the pot support in addition like this, through setting up supplementary fire hole moreover, need not to reduce the high center load that can increase the combustor of supporting shoe, in addition, can follow the upper portion of first fire lid body through the secondary air supply mouth and supply secondary air to improve combustion efficiency.
Drawings
FIG. 1 is a schematic view showing the structure of a burner in embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along the direction B-B of FIG. 1;
FIG. 4 is an exploded view of the burner in embodiment 1 of the present invention;
fig. 5 is a schematic structural diagram of a second fire cover body in embodiment 1 of the present invention;
FIG. 6 is a schematic view of the structure of FIG. 5 in another direction;
FIG. 7 is a schematic view showing the structure of a burner in embodiment 2 of the present invention;
fig. 8 is a cross-sectional view of fig. 7 taken along the direction C-C.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Example 1:
as shown in fig. 1 to 6, a gas burner includes a base 1, and an outer ring fire cover 13 and an inner ring fire cover 14 provided on the base 1. The outer ring fire cover 13 comprises an annular first fire cover body 2, the first fire cover body 2 comprises an annular top surface 201, an inner ring wall 203 and an outer ring wall 202, wherein the inner ring wall 203 and the outer ring wall 202 extend vertically or obliquely downwards from the inner side edge and the outer side edge of the annular top surface 201, a first air mixing cavity 24 is formed among the annular top surface 201, the inner ring wall 203 and the outer ring wall 202, and main fire holes 25 are arranged on the outer ring wall 202 at intervals along the circumferential direction.
Further, the outer ring fire cover body 2 includes a first portion 20a and a second portion 20b, where the first portion 20a and the second portion 20b are circumferentially spaced along the outer ring fire cover body 2, the bottom of each first portion 20a forms an air inlet 204a, the air inlet 204a is connected with one air mixing pipe 22, a secondary air supplementing opening 23 is formed between adjacent air mixing pipes 22, and the bottom of each second portion 20b is connected with the connecting wall 204. In this embodiment, the number of the air mixing pipes 22 is four, and correspondingly, the number of the secondary air supplementing ports 23 is also four.
Of the annular top surface 201, the outer annular surface of the outer annular wall 202, the outer annular surface of the inner annular wall 203, and the outer annular surface of the connecting wall 204, at least the outer annular surface of the outer annular wall 202 is circular-arc-shaped. Preferably, the annular top surface 201, the outer annular surface of the outer annular wall 202, the outer annular surface of the inner annular wall 203, and the outer annular surface of the connecting wall 204 are all circular arc-shaped, and a smooth transition is formed between the adjacent two. That is, the cross section of each of the first portions 20a is semicircular, and the cross section of each of the second portions 20b is circular, so that the air can be tightly wrapped on the outer surface of the whole first fire cover body 2 by using the coanda effect, thereby shortening the supply path of the secondary air and further more efficiently supplying the secondary air.
Still further, a supporting block 21 for supporting the bottom surface of the pot is fixed to the top of the first portion 20a, each supporting block 21 extends upward, and an auxiliary fire hole 211 is formed on the inner side surface of the supporting block and is communicated with the first air mixing chamber 24. The arrangement of the supporting block 21 in this embodiment not only makes the structure of the burner simple, does not need to additionally provide a pot bracket, but also provides the auxiliary fire hole 211, and can increase the center load of the burner without reducing the height of the supporting block 21, thereby improving the combustion efficiency thereof. In addition, a secondary air supply port 212 is formed between the adjacent support blocks 21, so that secondary air can be supplied through the secondary air supply port 212 above the first fire cover body 2, the supply path of secondary air can be further shortened, and the secondary air supply efficiency can be further improved by cooperation with the secondary air supply port 23. Preferably, the secondary air supply ports 212 are respectively in one-to-one correspondence with the secondary air supply ports 23 and vertically opposite to each other, so that part of the air escaping from the secondary air supply ports 23 can enter the corresponding secondary air supply ports 212 again under the effect of the coanda effect of the outer annulus of the outer annular wall 202, and accordingly, part of the air escaping from the secondary air supply ports 212 can enter the corresponding secondary air supply ports 23 under the effect of the coanda effect of the outer annulus of the outer annular wall 202, thereby sufficiently improving the secondary air supply efficiency.
Preferably, the duct of the auxiliary fire hole 211 extends obliquely upward with respect to the horizontal plane in the above-mentioned supporting block 21, so that the bottom surface of the pot can be better auxiliary heated by the auxiliary fire hole 211. The auxiliary fire holes 211 are provided at intervals along the width direction of each support block 21 and are parallel to the main fire holes 25. In addition, the supporting block 21 has a hollow structure and is respectively communicated with the first air mixing cavity 24, and the supporting block 21, the first fire cover body 2 and the air mixing pipe 22 are integrated, so that the processing and the manufacturing are convenient, and the internal structure of the fire cover can be more stable. In addition, in order to make each support block 21 better support the bottom surface of the pot, it is preferable that the upper ends of each support block 21 are respectively bent outward in a rounded transition and extend obliquely upward, so that support cambered surfaces 210 are respectively formed on the upper end surfaces thereof.
An outer ring cavity 11 and an inner ring cavity 12 are arranged in the inner cavity of the base 1, and an outer ring vent 101 and an inner ring vent 102 are respectively arranged on the top plate 10 of the base 1, wherein the number of the outer ring vents 101 is matched with that of the air mixing pipes 22, and the free ends of the air mixing pipes 22 are respectively connected in the corresponding outer ring vents 101, so that the outer ring cavity 11 is respectively communicated with the air mixing pipes 22 through the outer ring vents 101.
The inner ring vent 102 communicates with the inner ring cavity 12. The inner ring fire cover 14 includes a second fire cover body 32 with an open upper part and a cover body 31 covering the mouth of the second fire cover body 32, the upper end edge of the second fire cover body 32 is provided with an inner ring fire hole 30 along the circumferential direction, the inner cavity of the second fire cover body 32 corresponding to the inner ring fire hole 30 forms a second air mixing cavity 33, the second fire cover body 32 below the second air mixing cavity 33 is provided with air mixing channels 324 penetrating up and down, the number of the air mixing channels 324 is matched with that of the inner ring air vents 102, and each air mixing channel 324 is respectively arranged on the corresponding inner ring air vents 102, so that the inner ring air vents 102 are communicated with the second air mixing cavity 33 through each air mixing channel 324.
Preferably, the second fire cover body 32 has a central hole 34, and secondary air supplement holes 325 respectively communicating with the central hole 34 are provided on a sidewall of the second fire cover body 32 at intervals in the circumferential direction. The number of the secondary air supplementing holes 325 in the present embodiment corresponds to the secondary air supplementing openings 23, and each secondary air supplementing opening 23 is opposite to the corresponding secondary air supplementing hole 325 in front and back, so that the secondary air supplementing path can be shortened, and the supplementing efficiency can be improved. In order to make the secondary air supply effect of the inner ring fire cover 14 better, the secondary air supply holes 325 are uniformly flared from inside to outside.
In addition, in this embodiment, large concave grooves 321 are disposed at intervals along the circumferential direction at the upper end of the second fire cover body 32, and convex blocks 322 are respectively formed between the large concave grooves 321, small concave grooves 323 are respectively formed on the convex blocks 322, and the outer side edge of the cover body 31 is placed on the upper end edge, so that the outer side edge of the cover body 31, the large concave grooves 321 and the small concave grooves 323 respectively enclose large fire holes 301 and small fire holes 302, and the large fire holes 301 and the small fire holes 302 form the inner ring fire holes 30. The large groove 321 and the small groove 323 are square grooves, so that the large fire hole 301 and the small fire hole 302 are square holes, and cleaning of the fire holes is facilitated. Preferably, the upper end surface is provided with a flame stabilizing groove 326 recessed downwards along the circumferential direction, so that the inner ring fire hole 30 can burn more stably, and phenomena such as tempering and flameout are avoided.
Example 2:
as shown in fig. 6 and 8, the inner ring fire cover 14 in this embodiment is different from embodiment 1 in structure. Specifically, the structure of the inner ring fire cover 14 in this embodiment is the same as that of the outer ring fire cover 13 in embodiment 1. In this way, the number of the inner ring air vents 102 is matched with that of the air mixing pipes 22, and the free ends of the air mixing pipes 22 are respectively connected in the corresponding inner ring air vents 102, so that the outer ring cavity 11 is respectively communicated with the air mixing pipes 22 through the outer ring air vents 101, and the secondary air supplementing ports 23 on the inner ring fire cover 14 are opposite to the secondary air supplementing ports 23 on the outer ring fire cover 13.
Claims (10)
1. The utility model provides a fire lid of gas burner, includes annular first fire lid body (2), this first fire lid body (2) include annular top surface (201) and by the inboard edge of this annular top surface (201), the interior annular wall (203) and outer annular wall (202) of outside edge vertical or slope downwardly extending, form first mixed gas chamber (24) between above-mentioned annular top surface (201), interior annular wall (203) and outer annular wall (202), and be provided with main fire hole (25) along the circumference interval on above-mentioned outer annular wall (202), a serial communication port, all be equipped with at least three supporting shoe (21) that are used for supporting the pan bottom surface along the circumference interval on annular top surface (201), each supporting shoe (21) all upwards extend, and offered auxiliary fire hole (211) with above-mentioned first mixed gas chamber (24) intercommunication on its medial surface, form between adjacent supporting shoe (21) and supply secondary air mouth (212).
2. A fire cover according to claim 1, wherein the first fire cover body (2) comprises a first portion (20 a) and a second portion (20 b), the first portion (20 a) and the second portion (20 b) being circumferentially spaced along the first fire cover body (2), wherein the bottom of each first portion (20 a) forms an air inlet (204 a) and the bottom of each second portion (20 b) is connected by a connecting wall (204).
3. A fire cover as claimed in claim 2, wherein each of said first portions (20 a) is generally semicircular in cross section and said second portions (20 b) are generally circular in cross section.
4. A fire cover according to claim 3, wherein each air inlet (204 a) is connected with a gas mixing pipe (22), and a secondary air supplementing opening (23) is formed between adjacent gas mixing pipes (22), and the secondary air supplementing openings (23) are in one-to-one correspondence with the secondary air supplementing openings (212) and are respectively opposite to each other up and down.
5. A fire cover as claimed in any one of claims 1 to 4, characterised in that the passages of the auxiliary fire holes (211) extend obliquely upwards in the support block (21) relative to the horizontal plane.
6. A fire cover according to any one of claims 1 to 4, wherein the auxiliary fire holes (211) are provided at intervals in the width direction of each support block (21) and are parallel to the main fire holes (25).
7. A fire cover as claimed in any one of claims 1 to 4, wherein each of said support blocks (21) is hollow and communicates with said first mixing chamber (24) respectively.
8. A fire cover as claimed in any one of claims 1 to 4, wherein the upper ends of the support blocks (21) are respectively bent outwardly in a rounded manner and extend obliquely upwardly, thereby forming support arches (210) on the upper end faces thereof respectively.
9. A gas burner with a fire cover as claimed in claims 4-8, comprising a base (1) and an outer ring fire cover (13) and an inner ring fire cover (14) arranged on the base (1), characterized in that the outer ring fire cover (13) adopts the fire cover structure as described above, an outer ring cavity (11) is arranged in an inner cavity of the base (1), an outer ring vent (101) communicated with the upper outer ring cavity (11) is arranged on a top plate (10) of the base (1), the number of the outer ring vents (101) is matched with the number of the gas mixing pipes (22), and the free ends of the gas mixing pipes (22) are respectively connected in the corresponding outer ring vents (101), so that the outer ring cavity (11) is communicated with the gas mixing pipes (22) through the outer ring vents (101).
10. The gas burner as claimed in claim 9, wherein the inner ring fire cover (14) adopts the fire cover structure, an inner ring cavity (12) is further arranged in the inner cavity of the base (1), and an inner ring vent (102) communicated with the inner ring cavity (12) is further arranged on the top plate (10) of the base (1);
the number of the inner ring air vents (102) is matched with that of the air mixing pipes (22), and the free ends of the air mixing pipes (22) are respectively connected into the corresponding inner ring air vents (102), so that the outer ring cavity (11) is communicated with the air mixing pipes (22) through the outer ring air vents (101), and the secondary air supplementing openings (23) on the inner ring fire cover (14) are opposite to the secondary air supplementing openings (23) on the outer ring fire cover (13) in the inside and the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711046460.8A CN109724077B (en) | 2017-10-31 | 2017-10-31 | Fire cover and gas burner using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711046460.8A CN109724077B (en) | 2017-10-31 | 2017-10-31 | Fire cover and gas burner using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109724077A CN109724077A (en) | 2019-05-07 |
| CN109724077B true CN109724077B (en) | 2024-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711046460.8A Active CN109724077B (en) | 2017-10-31 | 2017-10-31 | Fire cover and gas burner using same |
Country Status (1)
| Country | Link |
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| CN (1) | CN109724077B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146093B (en) * | 2019-06-26 | 2022-02-01 | 宁波方太厨具有限公司 | Fire cover of kitchen range |
| CN110360566B (en) * | 2019-07-30 | 2020-09-11 | 宁波方太厨具有限公司 | Fire cover of kitchen range |
| CN110864295B (en) * | 2019-10-31 | 2021-07-23 | 宁波方太厨具有限公司 | Outer ring fire cover, combustor using fire cover and gas stove using combustor |
| CN112923368B (en) * | 2019-12-05 | 2022-03-08 | 宁波方太厨具有限公司 | Burner furnace end and kitchen range using same |
| CN112902170B (en) * | 2021-01-26 | 2022-03-08 | 宁波方太厨具有限公司 | Fire cover assembly and combustor comprising same |
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| CN109724077A (en) | 2019-05-07 |
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