CN212377969U - Stove burner and stove - Google Patents

Abstract

The utility model relates to a stove burner and a stove, the stove burner comprises a base, a first cover, a second cover and a third cover, wherein the base is provided with an inner ring cavity, an outer ring cavity and a middle ring cavity; the first infrared combustion plate is annular, is arranged at a position close to the top of the outer ring cavity to cover the top opening of the outer ring cavity, and is provided with first fire holes; the gas supply device also comprises a baffle plate which is vertically arranged in the middle ring cavity and extends along the circumferential direction to divide the inner cavity of the middle ring cavity from outside to inside into a gas channel and a gas supply channel which are mutually independent and have an open top; the gas supply channel is provided with a secondary air inlet for secondary air to enter at a position adjacent to the bottom; the middle ring fire cover covers the top opening of the gas channel and is provided with a fire outlet hole for communicating the gas channel with the outside; and the air supply channel cover covers the top opening of the air supply channel, forms an air supply chamber together with the air supply channel, and is provided with a secondary air outlet for secondary air to flow out. The combustion is more sufficient by supplementing secondary air, and the combustion efficiency is improved.

Description

Stove burner and stove

Technical Field

The utility model belongs to the technical field of cooking utensils, concretely relates to cooking utensils combustor and cooking utensils.

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 pot body is limited by the heat absorption capacity of the pot body, the temperature of the smoke discharged from the bottom of the pot is high, nearly one fourth of heat is taken away by the discharged 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 semi-atmospheric and semi-infrared combustor can adopt a full-band technology. However, in this design, the outer ring flame cover is prone to flame escape, and the same combustion plate area, if arranged on the inner ring, would be large in diameter, eventually resulting in an increase in the size of the overall burner.

If chinese utility model patent "an infrared burner who sets up atmospheric combustion" again, its patent number is ZL201821677211.9 (the publication number is CN209180935U) discloses an infrared burner includes inner ring air mixing chamber, outer ring air mixing chamber and the well ring air mixing chamber that is located between outer ring 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, the burning is not abundant, simultaneously, the ignition needle is located the well ring cavity, the flash flows on the ignition needle very easily, cause the jam and the flame-out of ignition needle easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem to provide a make the burning more for half full atmosphere half infrared formula cooking utensils combustor through replenishing secondary air to the current situation of above-mentioned prior art.

The utility model aims to solve the second technical problem that a cooking utensils combustor that can effectively guide the overflow to get into secondary air and supply the passageway thereby avoids causing the influence to the combustion area is provided.

The third technical problem to be solved by the utility model is to provide a cooking utensils combustor with stable flame.

The fourth technical problem to be solved by the present invention is to provide a cooker with the above cooker burner, which can reduce the heat loss and prevent the heat from being transferred to the inside of the cooker.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a stove burner comprises

The base is provided with an annular inner ring cavity, an outer ring cavity which is positioned at the periphery of the inner ring cavity and has an opening at the top, and a middle ring cavity which is positioned between the inner ring cavity and the outer ring cavity;

the first infrared combustion plate is annular and is arranged at a position close to the top of the outer ring cavity to cover the top opening of the outer ring cavity, and first fire holes are distributed on the first infrared combustion plate;

it is characterized by also comprising

The baffle plate is vertically arranged in the middle ring cavity and extends along the circumferential direction to divide the inner cavity of the middle ring cavity from outside to inside into a gas channel and an air supply channel which are mutually independent and have an open top;

the gas supply channel is provided with a secondary air inlet for secondary air to enter at a position adjacent to the bottom;

the middle ring fire cover covers the top opening of the gas channel, and is provided with a fire outlet for communicating the gas channel with the outside; and

and the air supplementing channel cover covers the top opening of the air supplementing channel and forms an air supplementing chamber together with the air supplementing channel, wherein the air supplementing chamber is provided with a secondary air outlet for secondary air to flow out.

In order to improve the combustion efficiency, the secondary air outlet is positioned below the fire outlet. Therefore, the airflow flowing out from the secondary air outlet flows upwards to supplement secondary air to the root of the middle ring flame, so that the flame is more fully combusted.

The secondary air outlet formed on the air supply channel cover can be directly arranged on the air supply channel cover, or can be in other forms, but preferably, the air supply channel cover comprises an inner ring wall and an outer ring wall positioned on the periphery of the inner ring wall, at least two flow deflectors arranged at intervals along the circumferential direction are arranged between the inner ring wall and the outer ring wall, and a gap between every two adjacent flow deflectors is the secondary air outlet.

In order to better supplement secondary air to the flame of the middle fire cover and improve the combustion efficiency, each guide vane is obliquely arranged relative to the horizontal plane in the circumferential direction or/and the radial direction, and the included angle between each guide vane and the horizontal plane is the same. Therefore, the air flowing out of the secondary air outlet flows upwards in a spiral mode to form rotating air, on one hand, secondary air is prevented from escaping outwards, the flowing area of the secondary air is reduced, and the secondary air stays at the fire outlet for a longer time; on the other hand, secondary air can be supplemented to the flame root on the middle fire cover, so that the combustion is more sufficient, and the combustion efficiency is improved.

In order to solve the second technical problem, the top opening of the inner annular wall corresponds to the inner annular cavity, and a guide plate for guiding the overflow liquid to the gas supplementing channel cover is covered on the top opening of the inner annular wall.

The structural form of the guide plate is various, wherein one of the design forms of the guide plate is as follows: the guide plate is a porous net sheet which is integrally convex upwards.

In order to conveniently contain overflowing liquid and prevent the overflowing liquid from entering a subsequent stove, the lower peripheral edge of the outer ring wall is bent inwards and upwards to form a liquid containing groove.

In order to increase the effective heat of the inner ring cavity and improve the heat efficiency, a second infrared combustion plate covering the top opening of the inner ring cavity is arranged at the position, close to the top, of the inner ring cavity, and second fire holes are distributed in the second infrared combustion plate. Therefore, the second infrared combustion plate is heated, and the heat efficiency is improved.

In order to prevent flameout while realizing the purpose of ignition, an ignition needle is arranged on the base, a channel which is communicated up and down is arranged in the inner ring cavity, an annular channel for inner ring gas to enter is formed by enclosing between the outer peripheral wall of the channel and the inner peripheral wall of the inner ring cavity, and the ignition needle is positioned in the channel, and part of the ignition needle extends out of the channel and is positioned between the second infrared combustion plate and the guide plate. The ignition needle is hidden in the channel and is positioned below the guide plate, so that the phenomenon that overflowing liquid directly contacts the ignition needle to extinguish is prevented.

The gas inlet is arranged at various positions, but preferably, the base is provided with a middle ring channel which is in fluid communication with the gas channel, the inlet of the middle ring channel is arranged on the peripheral wall of the base, and the inlet is the gas inlet.

The secondary air inlet is arranged at various positions, but preferably, the air supply channel is vertically communicated, and the bottom opening of the air supply channel is the secondary air inlet. Therefore, secondary air can be supplemented to the gas channel to enable combustion to be more sufficient, and combustion efficiency is improved.

In order to solve the third technical problem, the plurality of fire outlets are arranged at intervals along the circumferential direction, and each fire outlet is gradually inclined from bottom to top towards the center of the gas supplementing channel cover. The fire outlet holes of the middle ring fire cover are arranged into a cohesive structure, so that fire is gathered inwards to have a self-flame stabilizing effect.

In order to form the fire outlet hole conveniently, the middle ring fire cover comprises a lower cover and an upper cover placed on the lower cover, the upper cover is in an inverted conical bucket shape, a plurality of convex ribs are arranged on the lower surface of the upper cover at intervals along the circumferential direction, each convex rib extends along the direction which has an acute included angle with the radial direction, so that the whole body presents a clockwise or anticlockwise turning direction in the circumferential direction, and the fire outlet hole is formed among the upper cover, the lower cover and two adjacent convex ribs. The fire outlet hole of the middle ring fire cover is arranged to be simultaneously cohesive and rotary, so that the flame stabilizing cover has a self-flame stabilizing effect, a better secondary air supplementing effect and self-fire transfer can be realized.

In order to prevent the overflowing liquid from entering the fire hole, the inner periphery of the upper cover extends upwards vertically to form a neck part, and a circumferential convex rib protruding inwards is arranged at a position close to the top end of the neck part. So, the existence of the protruding muscle of circumference has carried out certain the blockking to the overflow, prevents that the overflow from entering into out the fire hole and blockking up out the fire hole.

The utility model provides a technical scheme that above-mentioned fourth technical problem adopted does: a cooking utensil with above-mentioned cooking utensil combustor, its characterized in that: the energy-gathering cover is characterized by further comprising a cooker panel and an energy-gathering cover with a cavity inside, a mounting hole is formed in the cooker panel, the burner is embedded in the mounting hole, the energy-gathering cover is located on the periphery of the burner, and the part, located in the mounting hole, of the energy-gathering cover is lower than the cooker panel.

In order to further reduce energy leakage, a partition plate extending along the circumferential direction is arranged in the cavity, the cavity is divided into at least two sub-cavities which are independent from each other and are arranged up and down by the partition plate, and the upper surface of the partition plate is a reflecting surface for reflecting infrared rays. The energy-gathering cover is usually made of metal, because of metal heat conduction and heat exchange, the lower plate below the partition plate still has very high temperature, infrared rays can radiate towards the lower layer, and the existence of the reflecting surface on the partition plate prevents the infrared rays from radiating towards the lower layer, so that the purpose of reducing energy leakage by gathering energy layer by layer can be achieved.

In order to adapt to the heating of the subsequent sharp-bottomed pan and the subsequent flat-bottomed pan, the inner peripheral edge of one of the upper outer surface and the lower outer surface of the energy-gathering cover is lower than the outer peripheral edge, and the other outer surface at least partially has a basically horizontal resting surface. Therefore, the heating purpose of the pointed bottom pot and the flat bottom pot can be realized.

Compared with the prior art, the utility model discloses a half infrared formula cooking utensils combustor's of half atmosphere zhonghuan intracavity is provided with tonifying qi passageway and gas channel, tonifying qi passageway and gas channel arrange in proper order from inside to outside, flame through tonifying qi passageway to gas channel's play fire hole supplyes secondary air, make the burning more fully improve combustion efficiency, and the setting of top tonifying qi passageway lid on the tonifying qi passageway, carry out certain the stopping to the discharge, and the discharge that the tonifying qi passageway was covered also can carbonize under the heating action of first infrared combustion board, it is downthehole and the jam fire hole to reduce the discharge to get into the play fire of zhonghuan fire lid.

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 a schematic view of the cover of the gas supply passage;

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

FIG. 5 is a schematic structural view of the middle fire cover;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural view of the upper cover in FIG. 5;

FIG. 8 is a schematic structural view of a base;

FIG. 9 is a cross-sectional view of FIG. 8;

FIG. 10 is a schematic view of a pan support placed on the energy concentrating cover;

FIG. 11 is a schematic view of the configuration of the concentrator cap of FIG. 10;

FIG. 12 is a schematic perspective exploded view of FIG. 10;

fig. 13 is a sectional view of a cooking appliance according to an embodiment of the present invention;

FIG. 14 is an enlarged view of the portion C of FIG. 13;

fig. 15 is a sectional view of another angle of the cooker part structure according to the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 15, it is a first preferred embodiment of the present invention. The cooker of the embodiment comprises a cooker panel 10, a burner, a power collecting cover 6 and a pot support 9.

As shown in fig. 13 to 15, a mounting hole 101 is formed on the cooker panel 10, the burner is embedded in the mounting hole 101, the energy-gathering cover 6 is partially disposed on the cooker panel 10 and surrounds the burner, and the portion of the energy-gathering cover 6 located in the mounting hole 101 is lower than the cooker panel 10; as shown in fig. 14 and 15, a cavity 61 is formed in the energy collecting cover 6, a partition plate 62 is arranged in the cavity 61, the partition plate 62 extends along the circumferential direction and is transversely arranged in an inclined manner, and then the cavity 61 is divided into at least two sub-chambers 611 which are independent from each other and are arranged up and down by the partition plate 62; the upper surface of the partition plate 62 is a reflecting surface 621 that reflects infrared rays. In this embodiment, as shown in fig. 10 to 12, one of the upper and lower surfaces of the energy concentrating cover 6 is an inclined surface in which the inner peripheral edge is lower than the outer peripheral edge, the inclined surface is a first surface 6a, the other outer surface is a substantially horizontal resting surface at least partially, and the resting surface is a second surface 6 b; the pot support 9 is arranged on one of the first face 6a or the second face 6b of the energy-gathering cover 6 and is positioned above the energy-gathering cover 6, and at least two support legs 91 are arranged on the pot support 9 at intervals along the circumferential direction.

As shown in fig. 1 to 3, the burner includes a base 1, a first infrared combustion plate 2, a partition plate 13a, a middle flame cover 3, a gas supply passage cover 4, a second infrared combustion plate 5, a guide plate and an ignition needle 8.

As shown in fig. 2 to 5, the base 1 has an annular inner ring cavity 11 extending upward, an outer ring cavity 12 located at the periphery of the inner ring cavity 11, and a middle ring cavity 13 located between the inner ring cavity 11 and the outer ring cavity 12, and the top of the inner ring cavity 11, the top of the outer ring cavity 12, and the top of the middle ring cavity 13 are all open. The base 1 is provided with three mixed gas channels, namely an inner ring channel 15, a middle ring channel 16 and an outer ring channel 17 which are arranged at the bottom of the base 1, wherein the inner ring channel 15 is used for being connected with the inner ring injection pipe 181, and the inner ring channel 15 is communicated with the inner ring cavity 11; the middle ring channel 16 is used for connecting with the middle ring injection pipe 182, and the middle ring channel 16 is communicated with the middle ring cavity 13; the outer ring channel 17 is used for connecting with the outer ring ejector tube 183, and the outer ring channel 17 is communicated with the outer ring cavity 12, so that the base 1 can receive the mixed gas of the ejector tube.

As shown in fig. 2 and 3, the partition 13a is vertically disposed in the middle ring cavity 13 and extends in the circumferential direction to divide the inner cavity of the middle ring cavity 13 into a gas channel 131 and an air supply channel 132 which are independent from each other and have an open top, the gas channel 131 and the air supply channel 132 are sequentially disposed from outside to inside, the gas channel 131 is communicated with the middle ring channel 16, the air supply channel 132 is vertically through, the open bottom of the air supply channel 132 is a secondary air inlet 1321 of the air supply channel 132, and the secondary air inlet 1321 is used for secondary air to enter.

As shown in fig. 2, 8 and 9, the position of the air supply channel 132 adjacent to the top opening is covered with an air supply channel cover 4, the air supply channel cover 4 is ring-shaped, and the air supply channel cover 4 and the air supply channel 132 form an air supply chamber a together, wherein the air supply chamber a has a secondary air outlet for secondary air to flow out. Specifically, as shown in fig. 3 and 4, the gas supply channel cover 4 includes an inner annular wall 41 and an outer annular wall 42 located at the periphery of the inner annular wall 41, a liquid containing groove 421 for containing the overflowing liquid is formed by bending and extending the lower periphery of the outer annular wall 42 inwards and upwards, at least two flow deflectors 43 arranged at intervals along the circumferential direction are arranged between the inner annular wall 41 and the outer annular wall 42, a gap between two adjacent flow deflectors 43 is a secondary air outlet, and the secondary air outlet is located below the fire outlet 3 a. Each guide vane 43 is arranged inclined in the circumferential direction or/and the radial direction with respect to the horizontal plane, and the included angle between each guide vane 43 and the horizontal plane is the same. Thus, the secondary air flowing out of the secondary air outlet is whirling air formed by upward flowing. On one hand, the secondary air is prevented from escaping, so that the flowing area of the secondary air is increased, and the secondary air stays at the fire hole for a longer time; on the other hand, secondary air can be supplemented to the flame root on the middle fire cover, so that the combustion is more sufficient, and the combustion efficiency is improved. In addition, in order to guide the overflowing liquid to the gas supplementing channel cover, as shown in fig. 1 and fig. 2, the top opening of the inner annular wall 41 corresponds to the inner annular cavity 11, and a guide plate for guiding the overflowing liquid to the gas supplementing channel cover 4 covers the top opening of the inner annular wall 41, the guide plate in this embodiment is a porous mesh 7 protruding upward as a whole, and is specifically shown in fig. 1, fig. 2, fig. 14, and fig. 15.

As shown in fig. 8, the gas channel 131 is communicated with the middle ring channel 16, and the inlet of the middle ring channel 16 is the gas inlet 1311 of the gas channel 131; as shown in fig. 2, 14 and 15, the middle fire cover 3 covers the top opening of the gas channel 131, the middle fire cover 3 is provided with a fire outlet 3a communicating the gas channel 131 with the outside, and the fire outlet 3a faces the gas supplementing channel 132; specifically, the middle fire cover 3 comprises a lower cover 31 and an upper cover 32 placed on the lower cover 31, the upper cover 32 is in an inverted cone bucket shape, a plurality of convex ribs 33 are arranged on the lower surface of the upper cover 32 at intervals along the circumferential direction, each convex rib 33 extends along the direction having an acute included angle with the radial direction, so that the whole body presents a clockwise or anticlockwise turning direction in the circumferential direction, and fire outlets 3a are formed among the upper cover 32, the lower cover 31 and two adjacent convex ribs 33, so that a plurality of fire outlets 3a are arranged at intervals along the circumferential direction, and each fire outlet 3a gradually inclines towards the center of the air supplement channel cover 4 from bottom to top; the extending direction of the rib 33 is the same as the extending direction of the fire hole 3 a. In addition, the internal periphery of upper cover 32 vertically upwards extends and forms neck 321 to have inside convex circumference protruding muscle 322 in the position that is close to this neck 321 top, the existence of circumference protruding muscle 322 has carried out certain the blockking to the overflow, prevents that the overflow from entering into the hole of a fire and blockking up the hole of a fire.

As shown in fig. 2, the upper cover 32 covers the middle ring cavity 13 and encloses with the outer ring cavity 12 to form an outer ring air mixing chamber, the first infrared combustion plate 2 is annular and is distributed with first fire holes 21, the thickness of the first infrared combustion plate 2 is 10-12mm, and the strength of the first fire holes 21 is 0.15-0.5w/mm 2; this first infrared combustion board 2 sets up in the outer loop mixes the gas chamber and this first infrared combustion board 2 covers the top of outer loop gas chamber uncovered, and in addition, first infrared combustion board 2 is from the outside-in downward sloping gradually, and is located the top of going out fire hole 3 a. When the first surface 6a of the energy-gathering cover faces upwards, the energy-gathering cover is suitable for placing a pot with a sharp bottom on the energy-gathering cover, so that the radiation angle coefficient of the first infrared combustion plate is increased, the effective heating area of the pot bottom is large, and the bottom surface of the pot with the sharp bottom is uniformly heated; when the second face 6b of the energy-gathering cover faces upwards, the pan is suitable to be placed on the energy-gathering cover, so that the radiation angle coefficient of the first infrared combustion plate is reduced, the heating area of the pan bottom is reduced, and the heat energy loss caused by the escape of infrared rays when the pan is heated is avoided.

As shown in fig. 1, 2, 14 and 15, a second infrared combustion plate 5 covering the top opening of the inner ring cavity 11 is disposed in the inner ring cavity 11, the top surface of the second infrared combustion plate 5 is located above the fire outlet 3a, the second infrared combustion plate 5 is disposed at a position adjacent to the top opening of the inner ring cavity, second fire holes 51 are distributed on the second infrared combustion plate 5, the thickness of the second infrared combustion plate 5 is 10-12mm, the strength of the second fire holes 21 is 0.15-0.5w/mm2, the aperture ratio and the fire hole strength of the second infrared combustion plate are low, and the minimum fire power can reach 1/2-1/5 of a conventional atmospheric burner. In addition, the inner ring cavity 11 is internally provided with a channel 111 which is vertically through, an annular channel 112 for the inner ring gas to enter is formed by the surrounding between the outer peripheral wall of the channel 111 and the inner peripheral wall of the inner ring cavity 11, the second infrared combustion plate 5 is positioned in the annular channel 112, as shown in fig. 2, the ignition needle 8 is positioned in the channel 111, and part of the ignition needle extends out of the channel 111 and is positioned between the second infrared combustion plate 5 and the porous mesh sheet 7.

The first infrared combustion plate and the second infrared combustion plate in the above embodiments are both formed by a plurality of porous ceramic plates in a ring shape, and other structures in the prior art may also 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), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims (17)

1. A stove burner comprises

The base (1) is provided with an annular inner ring cavity (11), an outer ring cavity (12) which is positioned at the periphery of the inner ring cavity (11) and is provided with an opening at the top, and a middle ring cavity (13) which is positioned between the inner ring cavity (11) and the outer ring cavity (12);

the first infrared combustion plate (2) is annular and is arranged at a position close to the top of the outer ring cavity (12) to cover the top opening of the outer ring cavity (12), and first fire holes (21) are distributed on the first infrared combustion plate;

it is characterized by also comprising

The baffle plate (13a) is vertically arranged in the middle ring cavity (13) and extends along the circumferential direction to divide the inner cavity of the middle ring cavity (13) into a gas channel (131) and an air supplementing channel (132) which are independent from each other and have an open top;

the gas channel (131) is provided with a gas inlet (1311), and the air supplementing channel (132) is provided with a secondary air inlet (1321) for secondary air to enter at a position adjacent to the bottom;

the middle ring fire cover (3) covers the top opening of the gas channel (131), and is provided with a fire outlet (3a) for communicating the gas channel (131) with the outside; and

and the air supplementing channel cover (4) covers the top opening of the air supplementing channel (132) and forms an air supplementing chamber (A) together with the air supplementing channel (132), wherein the air supplementing chamber (A) is provided with a secondary air outlet for secondary air to flow out.

2. The cooktop burner of claim 1, wherein: the secondary air outlet is positioned below the fire outlet (3 a).

3. The cooktop burner of claim 1 or 2, wherein: the air supply channel cover (4) comprises an inner annular wall (41) and an outer annular wall (42) located on the periphery of the inner annular wall (41), at least two flow deflectors (43) arranged at intervals along the circumferential direction are arranged between the inner annular wall (41) and the outer annular wall (42), and a gap (44) between every two adjacent flow deflectors (43) is the secondary air outlet.

4. The cooktop burner of claim 3, wherein: each guide vane (43) is arranged in a circumferential direction or/and a radial direction in an inclined mode relative to the horizontal plane, and the included angle between each guide vane (43) and the horizontal plane is the same.

5. The cooktop burner of claim 3, wherein: the lower periphery of the outer ring wall (42) is bent inwards and upwards to form a liquid containing groove (421).

6. The cooktop burner of claim 3, wherein: the top opening of the inner ring wall (41) corresponds to the inner ring cavity (11), and a guide plate for guiding overflow liquid to the air supply channel cover (4) is covered on the top opening of the inner ring wall (41).

7. The cooktop burner of claim 6, wherein: the guide plate is a porous net piece (7) which is integrally convex upwards.

8. The cooktop burner of claim 6, wherein: the inner ring cavity (11) is provided with a second infrared combustion plate (5) which covers the top opening of the inner ring cavity, and second fire holes (51) are distributed in the second infrared combustion plate (5).

9. The cooktop burner of claim 8, wherein: the ignition device is characterized in that an ignition needle (8) is arranged on the base (1), a channel (111) which is communicated up and down is arranged in the inner ring cavity (11), an annular channel (112) for inner ring gas to enter is formed between the outer peripheral wall of the channel (111) and the inner peripheral wall of the inner ring cavity (11) in an enclosing mode, and the ignition needle (8) is located in the channel (111) and partially extends out of the channel (111) and is located between the second infrared combustion plate (5) and the guide plate.

10. The cooktop burner of claim 1, wherein: the base (1) is provided with a middle ring channel (16) which is in fluid communication with the gas channel (131), the inlet of the middle ring channel (16) is arranged on the outer peripheral wall of the base (1), and the inlet is the gas inlet (1311).

11. The cooktop burner of claim 1, wherein: the air supply channel (132) is vertically communicated, and the bottom opening of the air supply channel (132) is the secondary air inlet (1321).

12. The cooktop burner of claim 1, wherein: the fire outlet holes (3a) are arranged at intervals along the circumferential direction, and each fire outlet hole (3a) gradually inclines towards the center of the gas supplementing channel cover (4) from bottom to top.

13. The cooktop burner of claim 12, wherein: the middle fire cover (3) comprises a lower cover (31) and an upper cover (32) placed on the lower cover (31), the upper cover (32) is in an inverted cone bucket shape, a plurality of convex ribs (33) are arranged on the lower surface of the upper cover at intervals along the circumferential direction, each convex rib (33) extends along the direction which has an acute included angle with the radial direction, so that the whole body presents clockwise or anticlockwise turning direction in the circumferential direction, and the fire outlet (3a) is formed among the upper cover (32), the lower cover (31) and two adjacent convex ribs (33).

14. The cooktop burner of claim 13, wherein: the inner periphery of the upper cover (32) extends vertically upwards to form a neck (321), and a circumferential rib (322) protruding inwards is arranged at a position close to the top end of the neck (321).

15. Hob having a hob burner according to any one of the claims 1 to 14, characterized in that: the energy-gathering cover is characterized by further comprising a cooker panel (10) and an energy-gathering cover (6) with a cavity (61) inside, a mounting hole (101) is formed in the cooker panel (10), the burner is embedded in the mounting hole (101), the energy-gathering cover (6) is located on the periphery of the burner, and the part, located in the mounting hole (101), of the energy-gathering cover (6) is lower than the cooker panel (10).

16. The cooktop of claim 15, wherein: be provided with in cavity (61) of gathering can (6) along the division board (62) of circumference extension, cavity (61) quilt division board (62) are separated into at least two mutually independent and subchambers (611) of arranging from top to bottom, the upper surface of division board (62) is reflecting surface (621) of reflection infrared ray.

17. The cooktop of claim 16, wherein: the inner peripheral edge of one outer surface of the upper outer surface and the lower outer surface of the energy-gathering cover (6) is lower than the outer peripheral edge, and the other outer surface is at least partially a basically horizontal placing surface.

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