CN111351039B

CN111351039B - Burner for gas stove

Info

Publication number: CN111351039B
Application number: CN201811576932.5A
Authority: CN
Inventors: 宋猛; 陈迪龙; 柯情
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-12-23
Filing date: 2018-12-23
Publication date: 2022-04-15
Anticipated expiration: 2038-12-23
Also published as: CN111351039A

Abstract

The invention relates to a burner for a gas stove, which comprises a base, an inner ring fire cover forming a central air mixing chamber between the base and an outer ring fire cover forming an outer ring air mixing chamber between the central air mixing chamber and the outer ring air mixing chamber, a secondary air replenishing cavity is formed between the central air mixing chamber and the outer ring air mixing chamber, the outer wall surface of the inner ring fire cover adjacent to the secondary air replenishing cavity is circumferentially provided with a fire outlet, a separator in the shape of a ring disk is arranged below the fire outlet of the secondary air replenishing cavity, the separator is provided with an outer side peripheral wall protruding upwards and a bottom part at least partially gradually inclining downwards from inside to outside along the radial direction, and the bottom part and the outer side peripheral wall form a liquid storage area together. And simultaneously has the function of storing overflowing liquid.

Description

Burner for gas stove

Technical Field

The invention relates to the field of gas cookers, in particular to a burner for a gas cooker.

Background

The primary air coefficient of the existing atmospheric stove burner is generally 0.4-0.7, the premixed air cannot reach the air amount required by complete combustion, and various factors are added, so that certain secondary air supplement is required, and in order to reduce the emission of CO, the secondary air supplement is required to be as sufficient as possible. At present, the mode that the cooking utensils combustor supplyed the air is diversified, generally has the side mode of admitting air and admitting air down, and the side air inlet mode is opened the side air intake at the lateral part of gas mixing chamber promptly, and the outside air carries out the secondary air through this side air intake and supplyes, and the air intake is opened down at the base seat promptly to the mode of admitting air down, and the air of cooking utensils below carries out the secondary air through this air intake down and supplyes. Although the side air intake mode has the advantages of small intake resistance and large intake air amount, the existing side air intake combustor still has the problems as follows: due to the injection effect of combustion hot air flow, secondary air can be sucked by the inner fire cover and the outer fire cover through the lateral air inlet of the air mixing chamber, the heat load of the inner ring is small, the coefficient of primary air is higher than that of the outer ring, the sucked secondary air is often excessive, the secondary air sucked by the middle ring fire hole of the outer fire cover is insufficient, and the secondary air is distributed reasonably and the full combustion of the inner ring and the outer ring is realized.

Therefore, the existing double-ring burner is provided with an outer ring fire cover and an inner ring fire cover, secondary air supplement of the inner ring fire cover is carried out through a ring center channel in the inner ring fire cover, when the outer ring fire cover is provided with a fire hole facing to the ring center direction, the problems of insufficient gas combustion, high smoke emission and low gas efficiency are caused because the distance from the outer ring fire cover to the inner ring fire cover is close, for example, the problem of the inner ring flame fire burner structure is caused by easy crossing of inner and outer ring flames, the problem is caused, for example, the problem of the inner flame fire burner structure is caused by the fact that a Chinese utility model patent ZL201621209944.0 (with the granted bulletin number of CN206176378U) discloses an inner flame fire burner structure which comprises a burner head, an outer ring gas groove, a central gas groove positioned at the ring center of the outer ring gas groove, an outer ring gas injection pipe communicated with the outer ring gas groove and a central injection pipe communicated with the central gas groove, the upper end of the burner head is provided with a fire cover seat, the upper end of the fire cover seat is higher than an outer ring fire cover communicated with the outer ring gas groove and a central fire cover communicated with the central gas groove, a secondary air supplement channel communicated with the upper end and the lower end of the furnace head is arranged between the outer ring gas groove and the central gas groove, a plurality of inner flame fire holes are arranged on the wall of the outer ring fire cover close to the secondary air supplement channel, a plurality of vertical fire holes are arranged on the upper end surface of the central fire cover, the inner flame burner is convenient for generating inner flame by arranging the inner flame holes on the outer ring flame cover of the burner, the vertical flame holes are arranged on the upper end surface of the central flame cover and are not easy to be staggered with the inner flame holes on the outer ring flame cover to influence each other, the outer ring flame cover and the central flame cover are respectively arranged at two sides of the secondary air supplement channel, the secondary air supplement is convenient for the flames on the inner flame fire holes and the vertical fire holes, and the flames are convenient to fully burn; on the other hand, in order to avoid the excessively fast secondary air flow rate in the secondary air supplement channel, the inner flame burner is further provided with the heat-resistant breathable net to inhibit the rapid flow in the secondary air supplement channel, so that the stable combustion of flame is facilitated, but if the breathable net is blocked, the problem that the secondary air of the outer ring fire cover and the secondary air of the inner ring fire cover cannot be supplemented is caused, and therefore, the burner needs to be further improved.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a burner for a gas range, which can effectively prevent a secondary air passage for supplying to an inner ring from being blocked by a liquid spill, in view of the above-mentioned prior art.

A second technical problem to be solved by the present invention is to provide a burner for a gas range, which effectively prevents the flow rate of secondary air supplied to an inner ring from being excessively high, in view of the above-mentioned prior art.

The third technical problem to be solved by the present invention is to provide a burner for a gas stove with stable inner ring flame, which is aimed at the above-mentioned prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this a combustor for gas-cooker including:

a base;

the inner ring fire cover is arranged on the base, and a central air mixing chamber is formed between the inner ring fire cover and the base;

the outer ring fire cover is also arranged on the base, is positioned at the periphery of the inner ring fire cover, and forms an outer ring gas mixing chamber with the base; a secondary air replenishing cavity which is communicated up and down and is communicated with the outside is formed between the central air mixing chamber and the outer ring air mixing chamber;

the method is characterized in that: the inner ring fire cover is provided with a fire outlet along the circumferential direction on the outer wall surface adjacent to the secondary air supplementing cavity, a ring-disc-shaped separator is arranged at the position of the secondary air supplementing cavity below the fire outlet, the separator is provided with an outer side peripheral wall protruding upwards and a bottom part at least partially and gradually inclining downwards from inside to outside along the radial direction, and the bottom part and the outer side peripheral wall form a liquid storage area together.

In order to facilitate secondary air to enter the fire outlet hole of the inner ring fire cover, radial openings which are distributed at intervals along the circumferential direction and used for secondary air to enter the fire outlet hole from bottom to top through the secondary air replenishing cavity are further formed in the bottom of the separating piece, a separating part is formed between every two adjacent radial openings in the bottom of the separating piece, a first convex edge and a second convex edge respectively extend upwards from two opposite side walls in every other one or more separating parts, and the first convex edge, the second convex edge and the separating parts jointly form a liquid guiding channel which is communicated with the liquid storage region and used for guiding overflow liquid. The radial opening is not easily blocked by the overflowing liquid by means of the flow guide channel.

In order to achieve the maximum flow of the overflow liquid to the liquid storage area, the liquid guide channel gradually expands outwards from the inside to the outside.

Further, in order to facilitate taking out the partitioning member, the upper end face of the outer side peripheral wall of the partitioning member is provided with a pulling member for inserting a finger.

From the viewpoint of ease of installation, it is preferable that the pulling member is formed in a "T" shape, a vertical portion of the pulling member is connected to an upper end surface of an outer peripheral wall of the partitioning member, and a lateral portion of the pulling member is disposed toward the inner ring fire cover.

Furthermore, separating discs are arranged below the separating pieces at intervals, shielding parts are arranged on the separating discs corresponding to the radial openings, and openings for secondary air to enter the radial openings are formed between the adjacent shielding parts.

Furthermore, every other or more than one of the two opposite side walls in the shielding part are respectively provided with a first convex edge and a second convex edge in a circumferential extension manner, and the first convex edge and the second convex edge can partially shield the radial opening.

Further, the part of the separating disc outside the opening is gradually inclined downwards from inside to outside along the radial direction, and forms a liquid storage area together with the peripheral wall of the separating disc.

The partition plate may be provided integrally with the partition member or separately from the partition member, and the shielding portion may preferably at least partially shield the radial opening in accordance with movement of the partition plate, in view of further adjusting an opening area of the radial opening through which the secondary air enters.

In order to prevent the overflow liquid from entering the separating disc, a third convex edge and a fourth convex edge respectively extend upwards from two opposite side walls in every other one or more than one shielding parts, and the third convex edge, the fourth convex edge and the shielding parts jointly form a liquid guide channel which is communicated with the liquid storage area and is used for guiding the overflow liquid.

Further, the base is provided with an outer ring gas channel communicated with the outer ring gas mixing chamber, and a transmission channel used for transmitting the mixed primary air and gas from the outer ring gas mixing chamber to the central gas mixing chamber. With the help of this transmission path, can make the gas of inner ring gas mixing chamber more directly carry out the mixture of primary air and gas with outer loop gas mixing chamber better, avoid gas and primary air to strike each other by the confluence of equidirectional not, this transmission path is along circumference evenly distributed to further improve the degree of consistency of primary air and gas equipartition at central gas mixing chamber, can also effectively reduce the kinetic energy loss.

Further, the secondary air supplementing cavity is arranged in an axial venturi cavity. The design can ensure that the secondary air is sucked into the secondary air supplementing cavity by means of the low pressure caused by the Venturi effect obtained in the axial Venturi cavity, and the suction rate of the secondary air is effectively improved.

In order to improve the uniformity of the outer ring fire cover heating pot bottom, the outer ring fire cover comprises an annular top wall, an inner ring wall and an outer ring wall, wherein the inner ring wall and the outer ring wall vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall, the inner ring wall is circumferentially provided with inner fire holes communicated with the outer ring gas mixing chamber, and the outer ring wall is circumferentially provided with outer fire holes communicated with the outer ring gas mixing chamber.

Compared with the prior art, the secondary air supplementing cavity has the advantages that the separator is arranged on the secondary air supplementing cavity, the separator can not only prevent the secondary air from entering the secondary air supplementing cavity at an excessively high speed, but also has the function of storing overflowing liquid, in addition, the separator is arranged between the central air mixing chamber and the outer ring air mixing chamber, the heat of the central air mixing chamber and the outer ring air mixing chamber can be recycled, the secondary air can be preheated, and the heat efficiency of the combustor is improved.

Drawings

FIG. 1 is a schematic view of a burner in accordance with embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view showing the structure in which the partitioning member and the partitioning plate are integrally formed in example 1 of the present invention;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is a sectional view of a burner in embodiment 2 of the present invention;

FIG. 6 is a sectional view of a partitioning member and a partitioning plate separately provided in an embodiment of the present invention;

FIG. 7 is a schematic view showing the structure of the partitioning member and the partitioning plate which are moved relative to each other in example 3 of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Example 1

As shown in fig. 1 to 4, as a best embodiment of the present invention, the burner for a gas stove in this embodiment includes a base 1, an inner ring fire cover 2 disposed on the base 1 and forming a central air mixing chamber 21 with the base 1, an outer ring fire cover 3 disposed on the base 1 and located at the periphery of the inner ring fire cover 2 and forming an outer ring air mixing chamber 31 with the base 1, a secondary air supplement chamber 4 penetrating up and down and communicating with the outside is formed between the central air mixing chamber 21 and the outer ring air mixing chamber 31, an outer wall surface of the inner ring fire cover 2 adjacent to the secondary air supplement chamber 4 is circumferentially provided with a fire outlet 211, a partition 5 in a ring disk shape is disposed below the fire outlet 211 in the secondary air supplement chamber 4, the partition 5 has an outer peripheral wall 50 protruding upward and a bottom portion at least partially inclined downward from the inside to the outside in a radial direction, the bottom of the separator 5 is provided with radial openings 51 which are distributed at intervals along the circumferential direction and are used for secondary air to enter, the part of the upper surface of the bottom of the separator 5, which is outside the radial openings 51, is gradually inclined downwards from inside to outside along the radial direction and forms a liquid storage area 52 together with the outer side peripheral wall 50 of the separator 5, the separator 5 is arranged on the secondary air replenishing cavity 4, the separator 5 not only can prevent the secondary air from entering the secondary air replenishing cavity 4 at an excessively high speed, but also has the function of storing liquid and liquid so as to prevent overflow from blocking the radial openings 51 through which the secondary air enters, in addition, the separator 5 is positioned between the central air mixing chamber 21 and the outer ring air mixing chamber 31, the heat of the central air mixing chamber 21 and the outer ring air mixing chamber 31 can be recycled, the secondary air can be preheated, and the heat efficiency of the combustor can be improved. In order to prevent the overflow liquid from entering the radial openings 51 and causing blockage, the bottom of the partition 5 forms a partition 53 between adjacent radial openings 51, two opposite side walls of every other one or more partitions 53 respectively extend upwards to form a first convex edge 531 and a second convex edge 532, and the first convex edge 531, the second convex edge 532 and the partitions 53 jointly form a liquid guide channel 534 communicated with the liquid storage area 52 and used for guiding the overflow liquid. In order to maximize the flow of the overflowing liquid toward the liquid storage area 52, it is preferable that the liquid guiding passage 534 is gradually expanded outward from the inside to the outside.

In order to further increase the slowing of the intake speed of the secondary air by the partition 5 in this embodiment, the partition 5 is further integrally provided with partition disks 7 at intervals below the partition 5, the partition disks 7 are provided with shielding portions 71 corresponding to the radial openings 51, openings 72 for the secondary air to enter the radial openings 51 are formed between adjacent shielding portions 71, wherein a first protruding edge 711 and a second protruding edge 712 extend along the circumferential direction of two opposite side walls of every other one or more shielding portions 71, and the first protruding edge 711 and the second protruding edge 712 can partially shield the radial openings 51. The first ledge 711 and the second ledge 712 serve to partially block the radial opening 51 and further serve to prevent the secondary air from entering the secondary-air replenishing chamber 4 at an excessive speed.

In addition, the base 1 is provided with an outer ring gas channel 11 communicated with the outer ring gas mixing chamber 31, and a transmission channel 12 used for transmitting the mixed primary air and gas from the outer ring gas mixing chamber 31 to the inner ring gas mixing chamber, by means of the transmission channel 12, the gas of the central gas mixing chamber 21 can be better directly mixed with the outer ring gas mixing chamber 31 to carry out the mixing of the primary air and the gas, better, the gas and the primary air are prevented from colliding with each other due to the convergence in different directions, the transmission channels 12 are three and are uniformly distributed along the circumferential direction, the uniformity of the uniform distribution of the primary air and the gas in the central gas mixing chamber 21 is further improved, and the kinetic energy loss can be effectively reduced. In order to improve the suction rate of the secondary air in the secondary air supply chamber 4, preferably, the secondary air supply chamber 4 is provided as an axial venturi chamber, and this design enables the secondary air to be sucked into the secondary air supply chamber 4 by means of the low pressure caused by the venturi effect obtained in the axial venturi chamber itself, thereby effectively improving the suction rate of the secondary air. Finally, in order to improve the uniformity of the outer ring fire cover 3 for heating the bottom of the pan, the outer ring fire cover 3 comprises an annular top wall 32, an inner ring wall 33 and an outer ring wall 34, wherein the inner ring wall 33 and the outer ring wall 34 extend downwards from the inner edge and the outer edge of the annular top wall 32 to be vertical or inclined, the inner ring wall 33 is provided with inner fire holes 331 communicated with the outer ring gas mixing chamber 31 along the circumferential direction, and the outer ring wall 34 is provided with outer fire holes 341 communicated with the outer ring gas mixing chamber 31 along the circumferential direction.

As described above, the path of the secondary air supplement for the burner of the gas range is: secondary air is supplied to the fire hole 211 of the inner fire cover 2 and the inner fire hole 331 of the outer fire cover 3 from the radial opening 51 of the partition 5 through the opening 72 of the partition plate 7 from the bottom up through the secondary air replenishing cavity 4 between the central air mixing chamber 21 and the outer air mixing cavity, meanwhile, the guide passage of the partition 5 and the liquid storage area 52 for storing overflowing liquid can prevent the overflowing liquid from blocking the radial opening 51, in addition, if the overflowing liquid directly flows into the radial opening 51, the overflowing liquid can be stored through the shielding part 71 of the partition plate 7, after cooking is finished, the partition 5 and the partition plate 7 can be taken out and cleaned for next use, in order to take the partition 5 conveniently, the upper end surface of the outer side wall of the partition 5 is provided with a lifting piece 6 for inserting fingers, and from the angle of simple installation, the lifting piece 6 is in a T shape, wherein the vertical part 61 of the lifting piece 6 is connected to the upper end surface of the outer side wall of the partition 5, and the transverse part 62 of the lifting piece 6 is arranged towards the inner ring fire cover 2, and the separating piece 5 can be taken only by hooking the transverse part 62 of the lifting piece 6 with fingers when in use.

Example 2

The structure is basically the same as that of the embodiment 1, and the only difference is that: the separating disc 7 ' is arranged detachably with respect to the partition 5, the structure of the separating disc 7 ' being substantially identical to that of the partition 5, the separating disc 7 ' being provided with a shutter 71 in correspondence of each radial opening 51, and likewise the portion of the separating disc 7 ' outside the opening 72 is also inclined gradually downwards from inside to outside in the radial direction and forms, with the peripheral wall of the separating disc 7 ', a liquid reservoir 70, as shown in fig. 5 and 6.

Example 3

The structure is basically the same as that of the embodiment 2, and the only difference is that: the shield portion 71 of the divider disk 7 'is capable of at least partially shielding the radial opening 51 as the divider disk 7' moves, thereby adjusting the angular considerations of the area of the opening 72 where secondary air enters the radial opening 51 through the opening 72, as shown in FIG. 7.

Claims

1. A burner for a gas range, comprising:

a base (1);

the inner ring fire cover (2) is arranged on the base (1), and a central air mixing chamber (21) is formed between the inner ring fire cover and the base (1);

the outer ring fire cover (3) is also arranged on the base (1), is positioned at the periphery of the inner ring fire cover (2), and forms an outer ring gas mixing chamber (31) with the base (1); a secondary air replenishing cavity (4) which is communicated up and down and is communicated with the outside is formed between the central air mixing chamber (21) and the outer ring air mixing chamber (31);

the method is characterized in that: the inner ring fire cover (2) is provided with fire holes (211) along the circumferential direction on the outer wall surface adjacent to the secondary air replenishing air cavity (4), the secondary air replenishing air cavity (4) is provided with a partition (5) in a ring disc shape at the position below the fire holes (211), the partition (5) is provided with an outer side peripheral wall (50) protruding upwards and a bottom part at least partially gradually inclining downwards from inside to outside along the radial direction, the bottom part and the outer side peripheral wall form a liquid storage area (52), the bottom part of the partition (5) is further provided with radial openings (51) which are distributed at intervals along the circumferential direction and used for secondary air to enter the fire holes (211) from bottom to top through the secondary air replenishing air cavity (4), separation discs (7, 7 ') are further arranged at intervals below the partition (5), and the separation discs (7, 7') are provided with shielding parts (71) corresponding to the radial openings (51), openings (72) for secondary air to enter the radial openings (51) are formed between adjacent shielding portions (71).

2. Burner for gas cooktops according to claim 1, characterized in that: the bottom of the separator (5) is adjacent to form a separating part (53) between the radial openings (51), every other one or more than one of the two opposite side walls in the separating part (53) respectively extend upwards to form a first convex edge (531) and a second convex edge (532), and the first convex edge (531), the second convex edge (532) and the separating part (53) jointly form a liquid guide channel (534) communicated with the liquid storage area (52) and used for guiding overflowing liquid.

3. Burner for gas cooktops according to claim 2, characterized in that: the liquid guide channel (534) gradually expands outwards from inside to outside.

4. Burner for gas cooktops according to claim 3, characterized in that: the upper end face of the outer side peripheral wall (50) of the separating piece (5) is provided with a lifting piece (6) for inserting fingers.

5. Burner for gas cooktops according to claim 4, characterized in that: the lifting piece (6) is T-shaped, a vertical part (61) of the lifting piece (6) is connected to the upper end face of the outer side peripheral wall (50) of the separating piece (5), and a transverse part (62) of the lifting piece (6) is arranged towards the inner ring fire cover (2).

6. Burner for gas cooktops according to claim 5, characterized in that: every two opposite side walls of every other one or more than one shielding parts (71) are respectively provided with a first convex edge (711) and a second convex edge (712) which extend along the circumferential direction, and the first convex edge (711) and the second convex edge (712) can partially shield the radial opening (51).

7. Burner for gas cooktops according to claim 6, characterized in that: the part of the separating disc (7, 7 ') outside the opening (72) is gradually inclined downwards from inside to outside along the radial direction, and forms a liquid storage area (70) together with the peripheral wall of the separating disc (7, 7').

8. Burner for gas cooktops according to claim 7, characterized in that: the shutter (71) can at least partially shutter the radial opening (51) with the movement of the separating disc (7, 7').

9. Burner for gas cooktops according to claim 7, characterized in that: every other one or more than one of the shielding parts (71) are provided with a third convex edge (713) and a fourth convex edge (714) extending upwards from two opposite side walls respectively, and the third convex edge (713), the fourth convex edge (714) and the shielding part (71) jointly form a liquid guide channel (715) which is communicated with the liquid storage area (70) and used for guiding overflowing liquid.

10. Burner for gas cooktops according to any one of claims 6 to 9, characterized in that: the base (1) is further provided with an outer ring gas channel (11) communicated with the outer ring gas mixing chamber (31), and a transmission channel (12) used for transmitting the mixed primary air and gas from the outer ring gas mixing chamber (31) to the central gas mixing chamber (21).

11. Burner for gas cooktops according to claim 10, characterized in that: the secondary air replenishing cavity (4) is arranged in an axial Venturi cavity.

12. Burner for gas cooktops according to claim 11, characterized in that: the outer ring fire cover (3) comprises an annular top wall (32), an inner ring wall (33) and an outer ring wall (34), wherein the inner ring wall (33) and the outer ring wall (34) vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall (32), the inner ring wall (33) is provided with inner fire holes (331) communicated with the outer ring gas mixing chamber (31) along the circumferential direction, and the outer ring wall (34) is provided with outer fire holes (341) communicated with the outer ring gas mixing chamber (31) along the circumferential direction.