CN113551227A - Stove burner and stove - Google Patents

Abstract

The invention relates to a stove burner and a stove, wherein the stove burner comprises a base, a first sealing ring and a second sealing ring, wherein the base is provided with an annular inner annular wall and an outer annular cavity which is positioned on the periphery of the inner annular wall and has an opening at the top; the inner ring fire cover covers the inner ring wall of the base, an inner ring gas mixing chamber is formed by enclosing between the inner ring wall and the inner ring wall, and a fire outlet communicated with the inner ring gas mixing chamber is formed in the inner ring fire cover; the infrared combustion plate is annular, is provided with fire holes, and is arranged at the position close to the top of the outer ring cavity to cover the top opening of the outer ring cavity; the method is characterized in that: the inner ring fire cover is provided with a flow guide hole, a gap is reserved between the partial position of the inner ring wall at least close to the top edge of the inner ring wall and the bottom surface of the inner ring fire cover, and the gap is in fluid communication with the fire outlet through the flow guide hole. Compared with the prior art, the invention has the advantages that: when the overflow liquid flows into the fire hole, the overflow liquid flows into the gap through the flow guide hole, so that the overflow liquid is prevented from gathering in the fire hole to block the fire hole.

Description

Stove burner and stove

Technical Field

The invention belongs to the technical field of cookers, and particularly relates to a cooker burner and a cooker.

Background

The burner is one of the important components of the gas cooker, and directly influences the performance of the gas cooker, such as smoke, heat efficiency and the like.

The existing burner structure like the Chinese utility model 'a burner for kitchen range' that the applicant previously applied for, its patent number is ZL201821028377.8 (the publication number is CN208886771U) discloses a burner for kitchen range, including outer ring cavity, the outer ring cavity is including being the annular and concentric inner ring wall and the outer rampart that sets up at interval and the diapire of connecting inner ring wall and outer rampart, inner ring wall and outer rampart top cover have outer ring fire lid, its characterized in that: the outer ring cavity is internally provided with secondary air supplement cells which are relatively isolated, the top wall of the outer ring fire cover is provided with main fire holes and secondary air supplement cells which are distributed along the radial direction at intervals, and the inner ring wall and/or the outer ring wall and/or the bottom wall of the outer ring cavity are/is provided with air inlets which are communicated with the outside air and the air outlets at the positions corresponding to the secondary air supplement cells.

The maximum temperature of flame of the atmospheric cooker is generally about 850 ℃, the pot body is heated by two modes of convection and heat radiation of high-temperature smoke, wherein the convection heating ratio accounts for about 80%, the radiation heating ratio accounts for 20%, the heat load is large, the convection heating of the pot body is limited by the heat absorption capacity of the pot body, the temperature of the smoke exhausted from the bottom of the pot is high, nearly one fourth of heat is taken away by the exhausted smoke and is dissipated to the surrounding environment, and the maximum heat efficiency can only reach about 78%.

In order to solve the technical problem, chinese utility model "a novel energy-efficient environmental protection combustor" as applicant previously applied for, its patent number is ZL201320429097.9 (the publication number is CN 203404810U) discloses a novel energy-efficient environmental protection combustor, which comprises a body, the body is including the outer loop flame generator that is formed with the outer loop hybrid chamber, the inside infrared burner that is equipped with of body, infrared burner is including even having the interior hybrid chamber that draws the ejector pipe in and setting up the combustion plate in this interior hybrid chamber top, the combustion plate is located the body space that the outer loop fire lid encloses, be provided with out the fire hole on the combustion plate. The infrared and atmospheric combustion are combined, the combustion efficiency and the exchange efficiency are higher, the flame wavelength of the outer ring flame generator is smaller than 0.76 mu m, the flame wavelength of the middle ring flame generator is located between 0.75 and 40 mu m, and the flame wavelength of the inner ring flame generator is located between 25 and 1000 mu m, so that the combustor adopts a full-band technology. However, the outer ring fire cover is prone to flame escaping, and the diameter of the inner ring is large if the outer ring fire cover is arranged on the inner ring, and the inner ring cannot achieve small fire power.

Also like chinese utility model patent "an infrared burner who sets up atmospheric combustion", its patent number is ZL201821677211.9 (the publication number of granting is CN209180935U) discloses an infrared burner includes inner ring air mixing chamber, outer loop air mixing chamber and the well ring air mixing chamber that is located between outer loop air mixing chamber and the inner ring air mixing chamber, is provided with ring shape infrared combustion board on the outer ring air mixing chamber, does not have the secondary air to supply in the middle cavity, and the burning is insufficient, and in addition, the flash is easy to be gathered and is blockked up the fire hole in the fire hole.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a cooker burner that can avoid the blockage of the fire hole while the combustion is sufficient, in view of the current situation of the prior art.

The second technical problem to be solved by the invention is to provide a cooker with the cooker burner, which can fully burn and reduce heat loss to achieve the purpose of improving heat efficiency.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a stove burner comprises

The base is provided with an annular inner annular wall and an outer annular cavity which is positioned on the periphery of the inner annular wall and is provided with an opening at the top;

the inner ring fire cover covers the inner ring wall of the base, an inner ring gas mixing chamber is formed by enclosing between the inner ring wall and the inner ring wall, and a fire outlet communicated with the inner ring gas mixing chamber is formed in the inner ring fire cover;

the infrared combustion plate is annular, is provided with fire holes, and is arranged at the position close to the top of the outer ring cavity to cover the top opening of the outer ring cavity;

the method is characterized in that: the inner ring fire cover is provided with a flow guide hole, a gap is reserved between the partial position of the inner ring wall at least close to the top edge of the inner ring wall and the bottom surface of the inner ring fire cover, and the gap is in fluid communication with the fire outlet through the flow guide hole.

The gap can be formed in various forms, namely the top edge of the inner ring wall gradually inclines downwards from outside to inside to form a gap with the inner ring fire cover, or a step is formed on the inner edge of the top edge of the inner ring wall to form a gap with the inner ring fire cover, but preferably, the inner edge of the top edge of the inner ring wall is concave downwards to form a step part, and the gap is formed between the step part and the bottom surface of the inner ring fire cover.

In order to prevent overflowing liquid from entering the gas mixing chamber, the inner periphery of the inner ring fire cover extends downwards to form ribs, and the ribs are in contact with the inner side wall of the inner ring wall. Therefore, the ribs, the gap, the inner ring fire cover and the inner ring wall are enclosed to form an accommodating cavity for accommodating overflowing liquid.

The fire holes are formed in various forms, and can be directly formed in the inner ring fire cover or in other forms, but preferably, the inner ring fire cover comprises a lower cover and an upper cover which is placed on the lower cover, and the fire holes are fire gaps which are formed at the outer periphery between the upper cover and the lower cover.

Specifically, be provided with protruding muscle between lower cover and the upper cover, protruding muscle have two at least and with the center of inner ring fire lid is radial setting, and adjacent two form relatively independent gas passageway between the protruding muscle, the water conservancy diversion hole is seted up on the lower cover corresponds the position of gas passageway, and is located the top in space.

In order to guide the overflowing liquid into the gap and prevent the gas channel and the fire outlet gap from being blocked, each gas channel is correspondingly provided with a guide hole, and the step part extends along the circumferential direction. So, step portion extends along circumference, then encloses the space that closes the formation and extend along circumference, when the overflow enters into the gas passageway, will flow to the space in through the water conservancy diversion hole in, reaches the purpose that prevents to block up the gas passageway.

In order to achieve the purpose of stabilizing flame, the lower cover is in a cone bucket shape, the convex ribs are arranged on the upper surface of the lower cover, and each convex rib extends along the direction which has an acute angle included angle with the radial direction, so that the whole body presents a clockwise or anticlockwise turning direction in the circumferential direction. Therefore, the gas is enabled to flow out in a rotating mode through the gas channel to form rotating fire, and the purpose of open fire and flame stabilization is achieved.

Preferably, the central position of the upper cover is provided with a central hole which is communicated with the inner ring gas mixing chamber, the upper cover is covered with a cover plate at the position corresponding to the central hole, and the cover plate is provided with a fire outlet through hole.

In order to reduce radiation losses, the inner peripheral edge of the infrared combustion plate is lower than the outer peripheral edge thereof. Therefore, infrared radiation escape is reduced, and heat loss is reduced.

In order to realize secondary air required by combustion of the inner ring, an air supplementing cavity is formed between the inner ring air mixing chamber and the outer ring cavity, the air supplementing cavity is in fluid communication with the inner ring air mixing chamber through a fire outlet, and at least one air supplementing channel used for communicating the air supplementing cavity with the outside is arranged on the base.

In order to realize the purpose of ignition, a channel which is communicated up and down is arranged in the air supply cavity, and an ignition needle is arranged in the channel.

In order to facilitate the external air to enter the air supplementing cavity, at least two air supplementing channels are arranged in the outer ring cavity in a radial mode by taking the center of the air supplementing cavity, and the air inlet of each air supplementing channel is formed in the outer peripheral wall of the base.

The technical scheme adopted by the invention for solving the second technical problem is as follows: a cooking utensils with above-mentioned cooking utensils combustor which characterized in that: the energy-gathering cover is located on the periphery of the combustor, and a secondary air inlet communicated with the air supply channel in a fluid mode is formed in the peripheral wall of the energy-gathering cover.

In order to improve the supplement efficiency, the secondary air inlets and the air inlet inlets of the air supply channels are arranged in a staggered mode, the air supply channels correspond to the two secondary air inlets, and the projections of the air inlet inlets on the energy-gathering cover along the central line direction of the energy-gathering cover are located between the two secondary air inlets. The secondary air flows in through the secondary air inlets on the two sides of the air supplementing channel and flows to the air inlet, so that the air is supplemented through the secondary air inlets on the two sides, the supplementing efficiency is improved, meanwhile, the air can be preheated, and the energy loss is effectively recovered.

The secondary air inlet is arranged in various forms, can be arranged at the bottom of the cavity, and can also be arranged at other positions, but from the perspective of facilitating air inlet, preferably, the energy-gathering cover is internally hollow to form the cavity, the periphery of the energy-gathering cover extends downwards to form an annular convex wall below the cavity, and the secondary air inlet is arranged on the annular convex wall.

In order to guide the airflow flowing in through the secondary air inlet into the air inlet conveniently, a flow guide group is arranged between the secondary air inlet and the air inlet along an airflow flow path, and the flow guide group is arranged on the outer side of the bottom wall of the cavity and at least comprises a flow guide sheet extending along the circumferential direction.

Preferably, the guide set includes at least two guide vanes arranged at intervals along the radial direction, a guide channel is formed between two adjacent guide vanes, and the guide channel is in an arc shape bending outward along the radial direction. Therefore, the secondary air can be guided into the air inlet, and the escape of the secondary air is reduced.

Compared with the prior art, the gap is reserved between the inner ring fire cover and the inner ring wall, the inner ring fire cover is provided with the flow guide hole which is in fluid communication with the gap and the fire outlet hole, and when overflow flows into the fire outlet hole, the overflow flows into the gap through the flow guide hole, so that the overflow is prevented from being accumulated in the fire outlet hole to block the fire outlet hole; and the mode of adopting half atmosphere half infrared formula combustor that atmospheric combustion and infrared combustion combined together prevents that outer ring fire from escaping and burning to gathering the circle, so, prevents to gather the temperature of circle too high and with heat transfer to the cooking utensils panel to reduce the probability that the cooking utensils panel heat explodes, improved combustion efficiency.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

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

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic view of an assembled structure of a base and a cumulative cover;

FIG. 5 is a cross-sectional view of the assembled structure of the base, the energy concentrating cover and the pan support;

FIG. 6 is a schematic view of the configuration of the concentrator cap of FIG. 4;

FIG. 7 is a schematic view of the structure of FIG. 6 at another angle;

FIG. 8 is a cross-sectional view of FIG. 6;

FIG. 9 is a schematic structural view of the base of FIG. 1;

FIG. 10 is a schematic structural view of an inner ring fire cover;

FIG. 11 is a schematic perspective exploded view of FIG. 10;

FIG. 12 is a schematic structural view of a cooktop of the present invention;

fig. 13 is a cross-sectional view of a portion of the structure of fig. 12.

Detailed Description

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

As shown in fig. 1 to 13, a cooktop of an embodiment of the present invention includes a cooktop panel 10, a burner, a power concentrating cover 6, a liquid containing pan B, and a pan support 9.

As shown in fig. 10, a mounting hole is opened on the cooker panel 10, the burner is embedded in the mounting hole 101, the energy-gathering cover 6 is placed on the cooker panel 10 through the liquid containing disc B, and the energy-gathering cover 6 surrounds the burner, as shown in fig. 13; as shown in fig. 7, a cavity 61 is formed in the energy-collecting cover 6, a partition plate 62 is disposed in the cavity 61, and the partition plate 62 extends in the circumferential direction and is transversely disposed, so that the cavity 61 is divided into at least two sub-chambers 611 which are independent of each other and are disposed up and down by the partition plate 62, as shown in fig. 5, 8 and 13; the upper surface of the partition plate 62 is a reflecting surface 621 that reflects infrared rays. As shown in fig. 5 and 12, the pot support 9 is disposed on the energy collecting cover 6, and the pot support 9 is an annular support ring, and the pot support 9 is circumferentially provided with at least two support legs 91 for supporting a pot, and the number of the support legs 91 in this embodiment is four.

As shown in fig. 1 and 2, the burner includes a base 1, an inner ring fire cover 2, an infrared combustion plate 3, and an ignition needle 8. As shown in fig. 2 to 5, the base 1 has an annular inner annular wall 11 extending upward, an outer annular cavity 12 located at the periphery of the inner annular wall 11, and an air supply cavity 13 located between the inner annular wall 11 and the outer annular cavity 12, wherein the air supply cavity 13 is used for supplying secondary air to the flame of the inner annular flame cover 2; as shown in fig. 9, the top of the inner annular wall 11, the top of the outer annular cavity 12 and the top of the gas replenishing cavity 13 are open.

As shown in fig. 1 and 9, the base 1 is provided with two mixed gas passages, which are an inner annular passage 15 and an outer annular passage 16 respectively arranged on the bottom of the base 1, the inner annular passage 15 is used for connecting with an inner annular ejector tube 171, and the inner annular passage 15 is communicated with the inner cavity of the inner annular wall 11; the outer ring passage 16 is used to connect with the outer ring ejector pipe 172, and the outer ring passage 16 is communicated with the outer ring cavity 12, so that the base 1 can receive the mixed gas of the ejector pipe. As shown in fig. 1 to 3, the inner fire cover 2 covers the inner wall 11 of the base 1, and an inner air mixing chamber 110 is formed between the inner fire cover 2 and the inner wall 11; the inner ring fire cover 2 has a fire hole formed therein in fluid communication with the inner ring gas mixing chamber 110, and specifically, the inner ring fire cover 2 includes a lower cover 21 and an upper cover 22 resting on the lower cover 21, and the fire hole is a fire gap d formed at an outer periphery between the upper cover 22 and the lower cover 21. A central hole 220 which is vertically communicated and communicated with the inner ring air mixing chamber 110 is formed in the central position of the upper cover 22, a cover plate 23 is covered on the upper cover 22 at a position corresponding to the central hole 220, and a fire outlet through hole 231 is formed in the cover plate 23, as shown in fig. 3.

In addition, in order to prevent the overflowing liquid, the upper cover 22 includes a top plate 22a, a central hole 220 is opened on the top plate, an extending cylinder 22b is formed by extending the periphery of the central hole 220 downwards, a concave and annular groove 223 is formed on the bottom surface of the top plate 22a, and the existence of the groove 223 reduces the overflowing liquid entering the fire hole to block the fire hole.

As shown in fig. 3, the inner fire cover 2 is provided with a diversion hole 210, a gap 111 is left between at least a partial position of the inner wall 11 adjacent to the top edge thereof and the bottom surface of the inner fire cover 2, and the gap 111 is in fluid communication with the fire outlet through the diversion hole 210. Specifically, a step portion 11a extending in the circumferential direction is formed in a recessed manner in the inner edge of the top edge of the inner ring wall 11, and a gap 111 is formed between the step portion 11a and the bottom surface of the inner ring fire cover 2. The gap 111 extends along the circumferential direction, and the gap 111 and the inner ring air mixing chamber 110 are independent from each other, specifically, the inner circumferential edge of the inner ring fire cover 2 extends downwards to form a rib 213, and the rib 213 is in contact with the inner side wall of the inner ring wall 11. The lower cover 21 is provided with a flow guide hole 210, the flow guide hole 210 is in fluid communication with the gap 111 and the fire outlet, and the flow guide hole 210 is located above the gap 111, specifically, as shown in fig. 10 and 11, the lower cover 21 is in a conical hopper shape, a convex rib 211 is arranged between the lower cover 21 and the upper cover 22, at least two convex ribs 211 are radially arranged on the upper surface of the lower cover 21 at the center of the inner ring fire cover 2, and the convex ribs 211 gradually incline upwards from inside to outside along the circumferential direction, so that the convex ribs 211 are integrally arranged in the circumferential direction, specifically, each convex rib 211 extends along the direction having an acute angle with the radial direction, and the whole circumferentially presents a clockwise or counterclockwise rotation direction. The two adjacent ribs 211 form relatively independent gas passages 212, and the gas passages 212 are arranged in a spiral direction at the center of the inner ring fire cover 2. As shown in fig. 11, the diversion holes 210 are formed at positions corresponding to the gas passages 212, and each gas passage 212 is provided with one diversion hole 210, so that the overflowing liquid flows into the gap 111 through the diversion hole 210 to prevent the overflowing liquid from blocking the gas passages 212.

As shown in fig. 1 and 2, the infrared combustion plate 3 is disposed in the outer ring cavity 12 at a position adjacent to the top, the infrared combustion plate 3 is used for covering the top opening of the outer ring cavity 12, the infrared combustion plate 3 has fire holes 31, and the infrared combustion plate 3 is gradually inclined downward from the outside to the inside, such that the inner peripheral edge of the infrared combustion plate 2 is lower than the outer peripheral edge thereof.

As shown in fig. 2 and 4, the gas supplementing chamber 13 is independent from the inner ring gas mixing chamber 110, and the gas supplementing chamber 13 is in fluid communication with the inner ring gas mixing chamber 110 through a fire hole; the air supply chambers 13 are communicated with the outside through at least one air supply channel 14, in this embodiment, four air supply channels 14 are arranged at intervals along the circumferential direction, the four air supply channels 14 are radially arranged in the outer ring cavity 12 by the center of the air supply chamber 13, the air inlet 142 of each air supply channel 14 is arranged on the outer circumferential wall of the base 1, and the air supply channels 14 are not communicated with the outer ring cavity 12. For convenience of ignition, as shown in fig. 2, a channel 131 penetrating from top to bottom is arranged in the gas supplementing cavity 13, an ignition needle 8 is arranged in the channel 131, and the upper end of the ignition needle 8 faces the fire outlet hole of the inner ring fire cover 2.

As shown in fig. 4 to 7, a secondary air inlet 6a in fluid communication with the air supply channel 14 is formed in the outer peripheral wall of the energy collecting cover 6, specifically, an annular convex wall 64 is formed by extending the outer peripheral edge of the energy collecting cover 6 downward, the annular convex wall 64 is located below the cavity 61, the secondary air inlet 6a is formed in the annular convex wall 64, and the secondary air inlet 6a is not in communication with the cavity 61 and is located above the liquid containing tray B. Along the airflow flow path, the secondary air inlets 6a are located upstream of the air supply channels 14, and there are four secondary air inlets 6a in this embodiment, and the four secondary air inlets 6a are arranged in a staggered manner with respect to the air inlet 142 of each air supply channel 14, that is, the projection of the air inlet 142 on the energy-concentrating cover 6 along the center line of the inner ring fire cover falls between the two secondary air inlets 6a, as shown in fig. 5.

In order to guide the airflow flowing in through the secondary air inlet 6a into the air inlet 142, as shown in fig. 5 to 8, a flow guide set 63 is disposed on the airflow path between the secondary air inlet 6a and the air inlet 142, the flow guide set 63 is disposed on the bottom wall of the cavity 61 and is located outside the cavity 61, and the flow guide set 63 at least includes one flow guide piece 631 extending along the circumferential direction, specifically, the flow guide set 63 includes at least two flow guide pieces 631 arranged at intervals along the radial direction, in this embodiment, there are three flow guide pieces 631 in each flow guide set 63, a flow guide channel 632 is formed between two adjacent flow guide pieces 631, and the flow guide channel 632 is in an arc shape bending radially outward.

The deflector 631 in this embodiment is a heat exchanger. The liquid containing disc B is arranged at the bottom of the energy gathering cover and above the cooker panel 10 and is used for containing overflowing liquid and oil stains, so that air flows under the action of the flow deflectors 631 to cool the liquid containing disc B at the bottom, the temperature of the liquid containing disc B and the temperature of the cooker panel 10 are reduced, and the probability of thermal explosion of the cooker panel is reduced.

The infrared combustion plate in the above embodiment is formed by a plurality of porous ceramic plates in a ring shape, and other prior art structures may be adopted.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (17)

1. A stove burner comprises

The base (1) is provided with an annular inner annular wall (11) and an outer annular cavity (12) which is positioned on the periphery of the inner annular wall (11) and has an opening at the top;

the inner ring fire cover (2) covers the inner ring wall (11) of the base (1), an inner ring gas mixing chamber (110) is formed between the inner ring wall (11) and the inner ring wall in a surrounding mode, and a fire outlet hole communicated with the inner ring gas mixing chamber (110) is formed in the inner ring gas mixing chamber;

the infrared combustion plate (3) is annular, fire holes (31) are distributed on the infrared combustion plate, and the infrared combustion plate is arranged at the position close to the top of the outer ring cavity (12) and covers the top opening of the outer ring cavity (12);

the method is characterized in that: the inner ring fire cover (2) is provided with a flow guide hole (210), a gap (111) is reserved between the partial position of the inner ring wall (11) at least close to the top edge of the inner ring wall and the bottom surface of the inner ring fire cover (2), and the gap (111) is in fluid communication with the fire outlet through the flow guide hole (210).

2. The cooktop burner of claim 1, wherein: the inner edge of the top edge of the inner ring wall (11) is recessed to form a step part (11a), and the gap (111) is formed between the step part (11a) and the bottom surface of the inner ring fire cover (2).

3. The cooktop burner of claim 2, wherein: the inner periphery of the inner ring fire cover (2) extends downwards to form ribs (213), and the ribs (213) are in contact with the inner side wall of the inner ring wall (11).

4. The cooktop burner of claim 3, wherein: the inner ring fire cover (2) comprises a lower cover (21) and an upper cover (22) resting on the lower cover (21), and the fire outlet hole is a fire outlet gap (d) formed at the outer periphery between the upper cover (22) and the lower cover (21).

5. The cooktop burner of claim 4, wherein: be provided with between lower cover (21) and upper cover (22) protruding muscle (211), protruding muscle (211) have two at least and with the center of inner ring fire lid (2) is radial setting, adjacent two be formed with relatively independent gas channel (212) between protruding muscle (211), go out fire clearance (d) with gas channel (212) are linked together, water conservancy diversion hole (210) link up from top to bottom, and set up on lower cover (21) corresponds the position of gas channel (212), and is located the top in space (111).

6. The cooktop burner of claim 5, wherein: each gas channel (212) corresponds to one diversion hole (210), and the step part (11a) extends along the circumferential direction.

7. The cooktop burner of claim 5, wherein: the lower cover (21) is in a cone bucket shape, the convex ribs (211) are arranged on the upper surface of the lower cover (21), and each convex rib (211) extends along a direction which has an acute included angle with the radial direction, so that the whole body presents a clockwise or anticlockwise rotation direction in the circumferential direction.

8. The cooktop burner of claim 5, wherein: the central position of upper cover (22) is seted up and is link up from top to bottom and central hole (220) that are linked together with inner ring gas mixing chamber (110), upper cover (22) is covered by apron (23) in the position that corresponds central hole (220), seted up on apron (23) and played fire through-hole (231).

9. The cooktop burner of claim 1, wherein: the inner peripheral edge of the infrared combustion plate (3) is lower than the outer peripheral edge thereof.

10. The cooktop burner of any of claims 1 to 9, wherein: an air supplement cavity (13) is formed between the inner ring air mixing chamber (110) and the outer ring cavity (12), and at least one air supplement channel (14) used for communicating the air supplement cavity (13) with the outside is arranged on the base (1).

11. The cooktop burner of claim 10, wherein: a channel (131) which is communicated up and down is arranged in the air supplementing cavity (13), and an ignition needle (8) is arranged in the channel (131).

12. The cooktop burner of claim 9, wherein: the air supply channels (14) are at least two and are radially arranged in the outer ring cavity (12) by the center of the air supply cavity (13), and an air inlet (142) of each air supply channel (14) is formed on the outer peripheral wall of the base (1).

13. A hob with a hob burner according to claim 9, characterized in that: including being annular and gathering can cover (6), gather and to expect that cover (6) are located the periphery of combustor, gather the periphery wall of ability cover (6) and offer with secondary air intake (6a) of air supplement channel's (14) air inlet (142) looks fluid intercommunication.

14. Hob according to claim 12, characterized in that: the secondary air inlets (6a) and the air inlet inlets (142) of the air supply channel (14) are arranged in a staggered mode, and the projection of the air inlet inlets (142) along the direction of the central line of the energy-gathering cover (6) falls between the two secondary air inlets (6 a).

15. Hob according to claim 13, characterized in that: gather and have cavity (61) inside the cover (6), the periphery wall downwardly extending of gathering the cover (6) is formed with and is located the cyclic annular convex wall (64) of cavity (61) below, secondary air intake (6a) are seted up on cyclic annular convex wall (64).

16. Hob according to claim 13, characterized in that: and a flow guide group (63) is arranged between the secondary air inlet (6a) and the air inlet (142) along the air flow path, the flow guide group (63) is arranged outside the bottom wall of the cavity (61), and at least comprises a flow guide sheet (631) extending along the circumferential direction.

17. The cooktop of claim 15, wherein: the flow guide group (63) comprises at least two flow guide sheets (631) which are arranged at intervals along the radial direction, a flow guide channel (632) is formed between every two adjacent flow guide sheets (631), and the flow guide channel (632) is in an arc shape which is bent outwards along the radial direction.

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