CN113551226A - 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 cavity and a second cavity, wherein the base is provided with an annular inner ring cavity, an annular outer ring cavity and an annular middle ring cavity; the first infrared combustion plate is annular, is arranged at the 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 clapboard which is arranged in the middle ring cavity and divides the inner cavity of the middle ring cavity into at least a gas channel and an air supply channel which are independent from each other and have an opening at the top, wherein the gas channel is provided with a gas inlet, and the air supply channel is provided with a secondary air inlet for secondary air to enter; 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 the cover plate is arranged at the position of the air supply channel, which is adjacent to the top opening, and forms an air supply chamber together with the air supply channel, wherein the air supply chamber is provided with a secondary air outlet for secondary air to flow out. The combustion efficiency is more fully improved by supplementing secondary air.

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 semi-atmospheric and semi-infrared combustor can adopt a full-band technology. However, in the modified design, the flame is easy to escape from the outer ring of the flame cover, and the same area of the combustion plate, which is arranged on the inner ring, has a large diameter, which eventually increases the size of the whole 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.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a half-atmosphere and half-infrared type stove burner which can make combustion more sufficient by supplementing secondary air in view of the current state of the prior art.

The second technical problem to be solved by the invention is to provide a cooker with the cooker burner, which reduces heat loss and prevents heat from being transferred to the inside of the cooker.

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 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 the 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 arranged in the middle ring cavity and divides the inner cavity of the middle ring cavity into at least a gas channel and an air supply channel which are independent from each other and have an open top, the gas channel is provided with a gas inlet, and the air supply channel is provided with a secondary air inlet for secondary air to enter;

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

the cover plate is arranged at the position, close to the top opening, of the air supplementing channel and forms an air supplementing chamber together with the air supplementing channel, and the air supplementing chamber is provided with a secondary air outlet through which secondary air flows out.

The gas channel and the air supply channel can be in a ring shape and are sequentially arranged along the radial direction, or are sequentially arranged along the circumferential direction, preferably, the partition plates are at least two, vertically extend and are circumferentially spaced, and then the gas channel and the air supply channel are sequentially arranged along the circumferential direction.

In order to converge the fire from outside to inside, the middle ring fire cover and the cover plate are both basically in a fan shape with a narrow inner end and a wide outer end.

One of the forming modes of the secondary air outlet is as follows: and a gap is reserved between the cover plate and the air supplementing channel, and the gap is the secondary air outlet. Therefore, secondary air can be supplemented to the fire outlet hole in time.

The second forming mode of the secondary air outlet: the cover plate is positioned above the middle ring fire cover, and a gap is reserved between the cover plate and the adjacent middle ring fire cover, and the gap is a secondary air outlet. In addition, the secondary air outlet can also be arranged on the cover plate.

In order to accommodate the overflowing liquid conveniently, the upper surface of the cover plate is provided with a concave cavity which is concave downwards and used for accommodating the overflowing liquid. As the overflowing liquid contained in the concave cavity can be carbonized at high temperature under the heating action of the first infrared combustion plate, the phenomenon that the overflowing liquid flows into the fire hole to block the fire hole is reduced.

In order to increase the supplement of secondary air and improve the combustion efficiency, the air supply channels are vertically communicated, at least two air supply channels are arranged at intervals along the circumferential direction and are communicated with each other in fluid, the secondary air inlet is the lower opening of each air supply channel, and the fuel gas channel is arranged between every two adjacent air supply channels. Therefore, secondary air can be supplemented to the gas channel to enable combustion to be more sufficient, and combustion efficiency is improved.

Preferably, each air supply channel is provided with a cover plate, the cover plates are connected through a connecting ring, and the connecting ring is placed on the base and corresponds to the inner ring cavity. So, can block the discharge better, reduce the discharge and get into out the fire hole.

In order to guide the overflowing liquid to the cover plate conveniently, a guide plate for guiding the overflowing liquid towards the direction of the cover plate is covered on the inner ring cavity, and at least part of the guide plate is positioned above the cover plate.

There are many designs of baffles, wherein one of the designs: the guide plate is a porous mesh which is integrally and upwards convex.

In order to increase the heat load of the inner ring cavity, 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 burning is carried out on the surface of the second infrared burning plate, no open fire exists, the situation that a fire wire escapes outwards cannot occur, and the heat load is improved.

The second design form of the guide plate: the guide plate is a convex lens, and the upper surface of the convex lens is arched upwards. Therefore, the heat efficiency can be improved by focusing infrared rays while realizing diversion.

Preferably, the upper surface of the convex lens is a first spherical surface, the lower surface of the convex lens is a second spherical surface protruding downwards, the thickness of the thickest part of the convex lens is d,

n is the refractive index of the convex lens, r1 is the radius of the second spherical surface, r2 is the radius of the first spherical surface, and H is the height between the first spherical surface and the bottom surface of the member to be heated.

For ignition purposes, the arrangement positions thereof take a first form: the base is provided with an ignition needle, 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 between the outer peripheral wall of the channel and the inner peripheral wall of the inner ring cavity in an enclosing mode, the second infrared combustion plate is located in the annular channel, and the ignition needle is located in the channel, partially extends out of the channel and is located 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.

In order to prevent flameout while achieving the ignition purpose, the arrangement position thereof takes a second form: an ignition needle is arranged in the middle ring cavity, extends upwards, and is partially positioned between the second infrared combustion plate and the guide plate. The ignition needle is hidden in the passageway, is located the below of guide plate, and the overflow water is at the effect of guide plate down water conservancy diversion to the apron on and carbonization on the apron, prevent that the overflow direct contact from to the ignition needle and appearing flame-out phenomenon, played fine fire protection effect.

The gas inlet may be formed in various forms, but preferably, the base has a middle ring passage in fluid communication with the gas passage, an inlet of the middle ring passage is opened on the outer circumferential wall of the base, and the inlet is the gas inlet.

The technical scheme adopted by the invention for solving the second technical problem is as follows: 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 gathering energy layer by layer and preventing energy from leaking is achieved.

In order to adapt to the heating of the subsequent pan and closed-end pan, the inner peripheral edge of one of the two upper and lower outer surfaces of the energy-collecting cover is lower than the outer peripheral edge, and the other outer surface at least partially has a substantially horizontal resting surface. So, make the heat assemble simultaneously in the heating purpose that can realize pan and sharp end pot, prevent that infrared ray from escaping outward, reduce the radiation heat loss.

Compared with the prior art, the stove burner is a semi-atmospheric semi-infrared burner, the gas supplementing channel and the gas channel are arranged in the middle ring cavity of the burner, gas is supplemented to the gas channel through the gas supplementing channel, so that the burning efficiency is fully improved, the top cover plate on the gas supplementing channel is arranged to block overflow liquid to a certain extent, the overflow liquid on the cover plate can be carbonized under the heating action of the first burning plate, and the phenomenon that the overflow liquid enters the fire outlet hole of the middle ring fire cover to block the fire outlet hole is reduced; the tonifying qi passageway in the well ring cavity and gas channel arrange along circumference in proper order, and gas channel is located between two tonifying qi passageways, so, can supply secondary air from gas channel's both sides for the burning is more abundant and improve combustion efficiency, compromises the function of biography flame simultaneously, cuts well fire, outer loop big fire when the little fire of inner ring, can transmit the outer loop with the inner ring fire.

Drawings

FIG. 1 is a schematic structural diagram of a burner according to a first embodiment of the present invention;

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

FIG. 3 is a cross-sectional view at another angle from FIG. 1;

FIG. 4 is a cross-sectional view of a base according to the first embodiment;

FIG. 5 is a cross-sectional view of another angle of the base according to the first embodiment;

FIG. 6 is a schematic structural view of the cover plate of FIG. 1;

FIG. 7 is a schematic view of the pan support of FIG. 1 in a configuration in which it is placed in a shaped energy concentrating hood;

FIG. 8 is a schematic view of the configuration of the concentrator cap of FIG. 7;

FIG. 9 is a schematic perspective exploded view of FIG. 7;

FIG. 10 is a schematic diagram of a convex lens;

FIG. 11 is a schematic structural diagram of a cooking range according to the first embodiment;

FIG. 12 is a cross-sectional view of FIG. 11;

FIG. 13 is an enlarged view of the portion C of FIG. 12;

FIG. 14 is a schematic structural view of a burner according to a second embodiment of the present invention;

FIG. 15 is a cross-sectional view of FIG. 14;

fig. 16 is a sectional view of a burner according to a third embodiment of the present invention;

fig. 17 is a schematic structural diagram of a base according to a third embodiment of the invention.

Detailed Description

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

The first embodiment is as follows:

as shown in fig. 1 to 13, a first preferred embodiment of the present invention is shown. 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. 11 to 13, 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. 13, a cavity 61 is formed in the energy collecting cover 6, a partition plate 62 is arranged in the cavity 61, and the partition plate 62 extends along the circumferential direction and is transversely arranged, so that 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. 7 to 9, 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 pan support 9 is disposed on one of the first face 6a or the second face 6b of the energy-gathering cover 6, the pan support 9 is located above the energy-gathering cover 6, the pan support 9 is circumferentially spaced with at least two support legs 91, and the number of the support legs 91 in this embodiment is four, as shown in fig. 7 to 9.

As shown in fig. 1 to 3, the burner includes a base 1, a first infrared combustion plate 2, a partition plate 13a, an intermediate fire cover 3, a cover plate 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, 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, as shown in fig. 4. 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 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; the first infrared combustion plate 2 is arranged in the outer ring cavity 12 and covers the top opening of the outer ring cavity 12; when the first surface 6a of the energy-gathering cover faces upwards, the energy-gathering cover is suitable for a pot with a sharp bottom to be placed 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. 2 and 3, at least two of the partition plates 13a extend vertically, the partition plates 13a are circumferentially spaced in the middle ring cavity 13 to divide the inner cavity of the middle ring cavity 13 into at least a gas channel 131 and an air supply channel 132 which are independent from each other and have an open top, and the gas channel 131 and the air supply channel 132 are circumferentially arranged in sequence. The gas supply channels 132 are at least two and are communicated up and down, each gas supply channel 132 is arranged at intervals along the circumferential direction and is communicated with each other by fluid, in the embodiment, three gas supply channels 132 are provided, the lower opening of each gas supply channel 132 is a respective secondary air inlet 1321, secondary air enters from the secondary air inlet 1321, a gas channel 131 is arranged between every two adjacent gas supply channels 132, a middle channel 161 is arranged in the outer ring cavity 12, the middle channel 161 is communicated with the middle ring channel 16, the inlet of the middle ring channel 16 is a gas inlet 1311 of the gas channel 131, the number of the gas channels 131 is three, and the outer wall of the gas channel 131 is provided with an opening 1312 communicated with the middle channel 161. The top opening of each gas channel 131 is covered with a middle ring fire cover 3, the middle ring fire cover 3 is basically in a fan shape with a narrow inner end and a wide outer end, the middle ring fire cover 3 is in a porous mesh structure, and the middle ring fire cover 3 is provided with a fire outlet 31 communicated with the outside.

As shown in fig. 2 and 3, each gas supply channel 132 is covered with a cover plate 4 on the top opening, the cover plate 4 is substantially in the shape of a sector with a narrow inner end and a wide outer end, the cover plates 4 are connected by a connecting ring 42, and the connecting ring 42 is placed on the base 1 and corresponds to the inner ring cavity 11, as shown in fig. 2 and 3; in addition, the upper surface of the cover plate 4 has a concave cavity 41 which is concave downwards and is used for accommodating overflowing liquid; the cover plate 4 and the respective air supply channels 132 form an air supply chamber a, the air supply chamber a has a secondary air outlet through which secondary air flows out, in this embodiment, the cover plate 4 is located above the middle fire cover 3, and a gap f is left between the cover plate 4 and the adjacent middle fire cover 3, and the gap f is the secondary air outlet; or, a gap f is left between the cover plate 4 and the air supply channel 132, and the gap f is the secondary air outlet.

As shown in fig. 1 to 3, a second infrared combustion plate 5 is disposed in the inner ring cavity 11 adjacent to the top thereof, the second infrared combustion plate 5 is used for covering the top opening of the inner ring cavity 11, 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 opening ratio and the strength of the second infrared combustion plate 5 are both low, and the minimum fire power can reach 1/2-1/5 of a conventional atmospheric burner. A guide plate for guiding the overflowing liquid to the concave cavity 41 of the cover plate 4 is covered on the connecting ring 42 above the inner ring cavity 11, at least part of the guide plate is located above the cover plate 4, in this embodiment, the guide plate is a convex lens 7b, the upper surface of the convex lens 7b is arched upwards, the upper surface of the convex lens 7b is a first spherical surface 71, the lower surface of the convex lens 7b is a second spherical surface 72 which is arched downwards, the thickness of the thickest part of the convex lens 7b is d,

n is the refractive index of the convex lens 7B, r1 is the radius of the second spherical surface 72, r2 is the radius of the first spherical surface 71, and H is the height between the first spherical surface 71 and the bottom surface of the pan B, as shown in fig. 10. Therefore, infrared rays are focused to one point of the center of the pot bottom through the convex lens, and the heat efficiency of small fire is improved.

As shown in fig. 2 and 3, a through channel 111 is formed in the inner ring cavity 11, an annular channel 112 for the 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, the second infrared combustion plate 5 is annular and located in the annular channel 112, 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 convex lens 7 b. 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, 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.

Example two:

fig. 14 to 15 show a second preferred embodiment of the present invention. This embodiment differs from the first embodiment only in that: the guide plate is a porous mesh 7a which is integrally convex upwards, the aperture of the hole on the porous mesh 7a is 1.0-1.5mm, and the fire hole strength is 4.5-6.5w/mm 2; the ignition needle 8 is arranged in the middle ring cavity 13, and the ignition needle 8 extends upwards, bends towards the second infrared combustion plate 5 and is partially positioned between the second infrared combustion plate 5 and the porous net piece 7 a. The porous net piece 7a protrudes upwards, so that liquid overflowing to the inner ring cavity in the pot can be enabled to flow outwards, meanwhile, the second infrared radiation plate below the porous net piece heats overflowing liquid, the liquid is evaporated and carbonized at high temperature, the overflowing liquid is prevented from flowing onto the ignition needle 8, the ignition needle is prevented from being blocked and flameout, and meanwhile, flame in the central fire-protecting area is prevented from being extinguished.

Example three:

as shown in fig. 16 to 17, a third preferred embodiment of the present invention is shown. This embodiment differs from the first embodiment only in that: the baffle 13a is vertically arranged in the middle ring cavity 13, and the baffle 13a extends along the circumferential direction, so that the inner cavity of the middle ring cavity 13 is divided into a gas channel 131 and an air supplementing channel 132 which are independent from outside to inside and have open tops; that is, the gas channel 131 and the gas supplementing channel 132 are both annular, as shown in fig. 16 and 17; the guide plate is a porous mesh 7a which is integrally convex upwards, the aperture of the hole on the porous mesh 7a is 1.0-1.5mm, and the fire hole strength is 4.5-6.5w/mm 2.

Claims (19)

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 arranged in the middle ring cavity (13) and divides the inner cavity of the middle ring cavity (13) into at least a gas channel (131) and an air supplementing channel (132) which are independent from each other and have open tops, 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;

the middle ring fire cover (3) covers the top opening of the gas channel (131), and is provided with a fire outlet (31) for communicating the gas channel (131) with the outside; and

the cover plate (4) is arranged at a position, close to 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: at least two baffle plates (13a) extend vertically and are arranged at intervals along the circumferential direction, and then the gas channel (131) and the air supply channel (132) are sequentially arranged along the circumferential direction.

3. The cooktop burner of claim 2, wherein: the middle fire cover (3) and the cover plate (4) are both basically in a fan shape with a narrow inner end and a wide outer end.

4. The cooktop burner of claim 2, wherein: a gap (f) is reserved between the cover plate (4) and the air supply channel (132), and the gap (f) is the secondary air outlet.

5. The cooktop burner of claim 2, wherein: the cover plate (4) is positioned above the middle fire cover (3), and a gap (f) is reserved between the cover plate and the adjacent middle fire cover (3), and the gap (f) is the secondary air outlet.

6. The cooktop burner of claim 5, wherein: the upper surface of the cover plate (4) is provided with a concave cavity (41) which is concave downwards and is used for containing overflowing liquid.

7. The cooktop burner of claim 5, wherein: the gas supplementing channels (132) are vertically communicated, at least two gas supplementing channels are arranged at intervals along the circumferential direction and are in fluid communication, the secondary air inlet (1321) is an opening at the lower part of each gas supplementing channel (132), and the fuel gas channel (131) is arranged between every two adjacent gas supplementing channels (132).

8. The cooktop burner of claim 7, wherein: each air supply channel (132) is provided with a cover plate (4), the cover plates (4) are connected through a connecting ring (42), and the connecting ring (42) is placed on the base (1) and corresponds to the inner ring cavity (11).

9. The cooktop burner of any of claims 2 to 8, wherein: the inner ring cavity (11) is covered with a guide plate for guiding overflow liquid towards the cover plate (4), and at least part of the guide plate is positioned above the cover plate (4).

10. The cooktop burner of claim 9, wherein: the guide plate is a porous mesh (7a) which is integrally raised upwards.

11. The cooktop burner of claim 9, wherein: the position of inner ring cavity (11) neighbouring top is equipped with and covers its open second infrared combustion board in top (5), it has second fire hole (51) to distribute on second infrared combustion board (5).

12. The cooktop burner of claim 11, wherein: the guide plate is a convex lens (7b), and the upper surface of the convex lens (7b) is arched upwards.

13. The cooktop burner of claim 11, wherein: the upper surface of the convex lens (7b) is a first spherical surface (71), the lower surface of the convex lens (7b) is a second spherical surface (72) which is convex downwards, the thickness of the thickest part of the convex lens (7b) is d,

n is the refractive index of the convex lens (7b), r1 is the radius of the second spherical surface (72), r2 is the radius of the first spherical surface (71), and H is the height between the first spherical surface (71) and the bottom surface of the member to be heated.

14. The cooktop burner of claim 11, 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), the second infrared combustion plate (5) is located in the annular channel (112), 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.

15. The cooktop burner of claim 11, wherein: an ignition needle (8) is arranged in the middle ring cavity (13), the ignition needle (8) extends upwards, and part of the ignition needle is positioned between the second infrared combustion plate (5) and the guide plate.

16. 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).

17. Hob having a hob burner according to any one of the claims 1 to 16, 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).

18. The cooktop of claim 17, wherein: be provided with in cavity (61) 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.

19. The cooktop of claim 18, 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.

Images