Cooker burner and cooker

Abstract

The present invention relates to a stove burner and a stove, wherein the stove burner comprises a base, an inner ring cavity, an outer ring cavity and a middle ring cavity; a first infrared combustion plate, which is annular, is arranged adjacent to the top position of the outer ring cavity and covers the top opening of the outer ring cavity, and is distributed with a first fire hole; a partition plate is also arranged vertically in the middle ring cavity, extending circumferentially and separating the inner cavity of the middle ring cavity from the outside to the inside into a gas channel and an air supply channel which are independent of each other and open at the top; the gas channel has a gas inlet, and the air supply channel has a secondary air inlet for secondary air to enter at a position adjacent to the bottom; a middle ring fire cover, which covers the top opening of the gas channel and is provided with a fire outlet hole connecting the gas channel with the outside; and an air supply channel cover, which covers the top opening of the air supply channel and forms an air supply chamber together with the air supply channel, and the air supply chamber has a secondary air outlet for secondary air to flow out. By supplementing the secondary air, the combustion is more complete and the combustion efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of stoves, and in particular relates to a stove burner and a stove. Background Art

[0002] The burner is one of the important components of a gas stove, which directly affects the stove's flue gas, thermal efficiency and other performance.

[0003] Existing burner structures, such as the Chinese utility model "A Burner for Cookers" previously applied for by the applicant, whose patent number is ZL201821028377.8 (authorization announcement number is CN208886771U), discloses a burner for cookers, including an outer ring cavity, the outer ring cavity including an inner ring wall and an outer ring wall that are annular and concentrically spaced, and a bottom wall connecting the inner ring wall and the outer ring wall, the inner ring wall and the outer ring wall are covered with an outer ring fire cover, characterized in that: the outer ring cavity has a relatively isolated secondary air replenishment chamber, the top wall of the outer ring fire cover has main fire holes and an air outlet of the secondary air replenishment chamber distributed radially and at intervals, and the inner ring wall and / or outer ring wall and / or bottom wall of the outer ring cavity are provided with an air inlet connected to the outside air and the air outlet at a position corresponding to the secondary air replenishment chamber.

[0004] The maximum flame temperature of the above-mentioned atmospheric stove is generally around 850°C. The pot body is heated by convection and heat radiation of high-temperature flue gas, of which convection heating accounts for about 80% and radiation heating accounts for 20%. The heat load is large. Convection heating of the pot body is limited by the heat absorption capacity of the pot body. The temperature of the flue gas discharged from the bottom of the pot is relatively high. Nearly a quarter of the heat is carried away by the exhausted flue gas and dissipated into the surrounding environment. The maximum thermal efficiency can only reach about 78%.

[0005] In order to solve the above technical problems, the Chinese utility model "A New High-efficiency Energy-saving and Environmentally Friendly Burner" previously applied by the applicant, whose patent number is ZL201320429097.9 (authorization announcement number is CN 203404810U), discloses a new high-efficiency energy-saving and environmentally friendly burner, including a body, the body including an outer ring flame generator formed with an outer ring mixing chamber, an infrared burner is arranged inside the body, the infrared burner includes an inner mixing chamber connected to an inner ejector tube and a combustion plate arranged above the inner mixing chamber, the combustion plate is located on the body space surrounded by the outer ring fire cover, and a fire outlet is arranged on the combustion plate. In this patent, infrared and atmospheric combustion are combined, and the combustion efficiency and exchange efficiency are higher, so that the flame wavelength of the outer ring flame generator is less than 0.76μm, the flame wavelength of the middle ring flame generator is between 0.75 and 40μm, and the flame wavelength of the inner ring flame generator is between 25 and 1000μm, so that this semi-atmospheric and semi-infrared burner can adopt "full-band" technology. However, in this design, flame escape is likely to occur at the outer ring fire cover, and if the combustion plate area is arranged in the inner ring, the diameter will be very large, which will eventually increase the size of the entire burner.

[0006] Another example is the Chinese utility model patent "An infrared burner with atmospheric combustion", whose patent number is ZL201821677211.9 (authorization announcement number is CN209180935U), which discloses an infrared burner including an inner ring air mixing chamber, an outer ring air mixing chamber and a middle ring air mixing chamber located between the outer ring air mixing chamber and the inner ring air mixing chamber. A circular infrared combustion plate is provided on the outer ring air mixing chamber. There is no secondary air supplement in the middle cavity, and the combustion is incomplete. At the same time, the ignition needle is located in the middle ring cavity, and the overflow can easily flow onto the ignition needle, which can easily cause the ignition needle to be blocked and flameout. Summary of the invention

[0007] The first technical problem to be solved by the present invention is to provide a semi-atmospheric and semi-infrared stove burner which can make combustion more complete by supplementing secondary air in view of the current status of the above-mentioned prior art.

[0008] The second technical problem to be solved by the present invention is to provide a stove burner which can effectively guide the overflow liquid into the secondary air replenishment channel to avoid affecting the combustion area.

[0009] The third technical problem to be solved by the present invention is to provide a stove burner with an open flame and stable flame.

[0010] The fourth technical problem to be solved by the present invention is to provide a stove having the above stove burner which reduces heat loss while preventing heat from being transferred to the interior of the stove.

[0011] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a stove burner, comprising

[0012] The base has an annular inner ring cavity, an outer ring cavity located outside the inner ring cavity and open at the top, and a middle ring cavity located between the inner ring cavity and the outer ring cavity;

[0013] The first infrared combustion plate is annular and is disposed adjacent to the top of the outer ring cavity to cover the top opening of the outer ring cavity, and has first fire holes distributed thereon;

[0014] It is characterized by that it also includes

[0015] A partition plate is vertically arranged in the middle ring cavity and extends circumferentially to separate the inner cavity of the middle ring cavity from outside to inside into a gas channel and a supplementary gas channel which are independent of each other and open at the top;

[0016] The gas channel has a gas inlet, and the air supply channel has a secondary air inlet for secondary air to enter at a position adjacent to the bottom;

[0017] A middle ring fire cover, covering the top opening of the gas channel, and having a fire outlet hole connecting the gas channel with the outside; and

[0018] The air supplement channel cover covers the top opening of the air supplement channel and forms an air supplement chamber together with the air supplement channel, wherein the air supplement chamber has a secondary air outlet for secondary air to flow out.

[0019] In order to improve the combustion efficiency, the secondary air outlet is located below the fire outlet, so that the airflow flowing out through the secondary air outlet flows upward to supplement the secondary air to the root of the middle ring flame, so that the flame burns more fully.

[0020] There are many forms of forming the secondary air outlet on the air supply channel cover. It can be directly opened on the air supply channel cover, or other forms can be adopted. However, preferably, the air supply channel cover includes an inner ring wall and an outer ring wall located outside the inner ring wall, and at least two guide vanes arranged circumferentially spaced apart are arranged between the inner ring wall and the outer ring wall, and the gap between two adjacent guide vanes is the secondary air outlet.

[0021] In order to better supplement the secondary air to the flame of the middle ring fire cover and improve the combustion efficiency, each of the guide vanes is tilted relative to the horizontal plane in the circumferential direction or / and radial direction, and the angles between each guide vane and the horizontal plane are the same. In this way, the wind flowing out through the secondary air outlet flows in a spiral direction and becomes a rotating wind. On the one hand, it prevents the secondary air from escaping, reduces the area where the secondary air flows, and allows the secondary air to stay at the fire outlet for a longer time; on the other hand, it can supplement the secondary air to the flame root on the middle ring fire cover, making the combustion more complete and thus improving the combustion efficiency.

[0022] In order to solve the second technical problem mentioned above, the top opening of the inner ring wall corresponds to the inner ring cavity, and the top opening of the inner ring wall is covered with a guide plate for guiding overflow to the air supply channel cover.

[0023] There are many structural forms of the guide plate, and one of the design forms of the guide plate is: the guide plate is a porous mesh that is convex upward as a whole.

[0024] In order to conveniently contain the overflow liquid and prevent the overflow liquid from entering the subsequent cooking appliance, the lower peripheral edge of the outer ring wall is bent inwardly and upwardly to form a liquid storage groove.

[0025] In order to increase the effective heat of the inner ring cavity and improve the thermal efficiency, the inner ring cavity is provided with a second infrared combustion plate covering the top opening thereof near the top, and the second infrared combustion plate is provided with second fire holes. In this way, the second infrared combustion plate is heated to improve the thermal efficiency.

[0026] In order to prevent flameout while achieving the purpose of ignition, an ignition needle is provided on the base, and the inner ring cavity has a vertically penetrating channel. The outer peripheral wall of the channel and the inner peripheral wall of the inner ring cavity enclose an annular channel for the inner ring gas to enter. The ignition needle is located in the channel and 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 located below the guide plate to prevent the overflow from directly contacting the ignition needle and causing flameout.

[0027] There are many locations for setting the gas inlet, but preferably, the base has a middle ring channel that is fluidically connected to the gas channel, the inlet of the middle ring channel is opened on the outer wall of the base, and the inlet is the gas inlet.

[0028] There are many locations for the secondary air inlet, but preferably, the air supply channel is connected from top to bottom, and the bottom opening of the air supply channel is the secondary air inlet. In this way, the gas channel can be supplemented with secondary air to make the combustion more complete and improve the combustion efficiency.

[0029] In order to solve the third technical problem, there are multiple fire holes, which are arranged at intervals along the circumference, and each fire hole is gradually inclined from bottom to top toward the center of the air supply channel cover. The fire holes of the middle ring fire cover are set to a cohesive structure, so that the fire converges inward and has a self-stabilizing flame effect.

[0030] In order to facilitate the formation of the fire outlet hole, the middle ring fire cover includes a lower cover and an upper cover placed on the lower cover. The upper cover is in the shape of an inverted cone, and a plurality of convex ribs are arranged at intervals along the circumferential direction on its lower surface. Each convex rib extends along a direction having an acute angle with the radial direction, so that the whole presents a clockwise or counterclockwise rotation direction in the circumferential direction. The fire outlet hole is formed between the upper cover, the lower cover and two adjacent convex ribs. By setting the fire outlet hole of the middle ring fire cover in a structure that is cohesive and rotating at the same time, it can have the effect of self-stabilizing flame, and can also have a good secondary air supplement effect, and can also achieve self-fire transmission.

[0031] In order to prevent the overflow from entering the fire outlet, the inner periphery of the upper cover extends vertically upward to form a neck, and a circumferential convex rib protruding inward is provided at a position adjacent to the top of the neck. Thus, the presence of the circumferential convex rib blocks the overflow to a certain extent, preventing the overflow from entering the fire outlet and blocking the fire outlet.

[0032] The technical solution adopted by the present invention to solve the fourth technical problem mentioned above is: a stove with the above-mentioned stove burner, characterized in that it also includes a stove panel and an energy collecting cover with a cavity inside, the stove panel is provided with a mounting hole, the burner is embedded in the mounting hole, the energy collecting cover is located at the periphery of the burner, and the part of the energy collecting cover located in the mounting hole is lower than the stove panel.

[0033] In order to further reduce energy leakage, a partition plate extending in the circumferential direction is provided in the cavity, and the cavity is divided into at least two independent sub-chambers arranged up and down by the partition plate, and the upper surface of the partition plate is a reflective surface that reflects infrared rays. The energy collecting cover is usually made of metal. Due to the heat conduction and heat exchange of metal, the lower plate below the partition plate still has a very high temperature, and infrared rays will radiate to the lower layer. The existence of the reflective surface on the partition plate prevents infrared rays from radiating to the lower layer, which can achieve layer-by-layer energy collection and reduce energy leakage.

[0034] In order to accommodate the subsequent heating of pointed-bottom pans and frying pans, the inner peripheral edge of one of the upper and lower outer surfaces of the energy-gathering cover is lower than the outer peripheral edge, and the other outer surface at least partially has a substantially horizontal resting surface. In this way, the purpose of heating pointed-bottom pans and frying pans can be achieved.

[0035] Compared with the prior art, the semi-atmospheric and semi-infrared stove burner of the present invention is provided with an air supply channel and a gas channel in the middle ring cavity, and the air supply channel and the gas channel are arranged in sequence from the inside to the outside. Secondary air is supplied to the flame of the fire hole of the gas channel through the air supply channel, so that the combustion is more complete and the combustion efficiency is improved. In addition, the setting of the air supply channel cover on the top of the air supply channel can block the overflow to a certain extent, and the overflow on the air supply channel cover can also be carbonized under the heating action of the first infrared combustion plate, thereby reducing the overflow from entering the fire hole of the middle ring fire cover and clogging the fire hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0037] Figure 2 for Figure 1 A cross-sectional view of

[0038] Figure 3 It is a structural schematic diagram of the air supply channel cover;

[0039] Figure 4 for Figure 3 A cross-sectional view of

[0040] Figure 5 It is a schematic diagram of the structure of the middle ring fire cover;

[0041] Figure 6 for Figure 5 A cross-sectional view of

[0042] Figure 7 for Figure 5 A schematic diagram of the structure of the upper cover in FIG.

[0043] Figure 8 is a schematic diagram of the structure of the base;

[0044] Fig. 9 for Figure 8 A cross-sectional view of

[0045] Fig.10 It is a structural schematic diagram of a pot support placed on the energy-gathering cover;

[0046] Fig.11 for Fig.10 Schematic diagram of the structure of the middle energy-gathering hood;

[0047] Fig.12 for Fig.10 Schematic diagram of the three-dimensional decomposition structure;

[0048] Fig.13 is a cross-sectional view of a cooker according to an embodiment of the present invention;

[0049] Fig.14 for Fig.13The enlarged structural diagram of the middle C part;

[0050] Fig.15 It is a cross-sectional view of a stove part structure at another angle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0051] The present invention is further described in detail below with reference to the accompanying drawings.

[0052] like Figures 1 to 15 The first preferred embodiment of the present invention is shown in FIG.

[0053] like Figures 13 to 15 As shown, a mounting hole 101 is provided on the stove panel 10, the burner is embedded in the mounting hole 101, the energy collecting cover 6 is partially provided on the stove panel 10 and surrounds the burner, and the portion of the energy collecting cover 6 located in the mounting hole 101 is lower than the stove panel 10; Fig.14 and Fig.15 As shown, the energy collecting cover 6 is hollow inside to form a cavity 61, and a partition plate 62 is arranged in the cavity 61. The partition plate 62 extends in the circumferential direction and is arranged transversely and obliquely. Then, the cavity 61 is divided into at least two independent sub-chambers 611 arranged up and down by the partition plate 62; in addition, the upper surface of the partition plate 62 is a reflective surface 621 that reflects infrared rays. In this embodiment, Figures 10 to 12 As shown, one of the upper and lower surfaces of the energy collecting cover 6 is an outer surface that is an inclined surface whose inner peripheral edge is lower than the outer peripheral edge, and the inclined surface is the first surface 6a, wherein the other outer surface is at least partially a substantially horizontal resting surface, and the resting surface is the second surface 6b; the pot support 9 is arranged on one of the first surface 6a or the second surface 6b of the energy collecting cover 6, and is located above the energy collecting cover 6, and the pot support 9 has at least two legs 91 arranged at intervals along the circumferential direction.

[0054] like Figures 1 to 3 As shown, the burner includes a base 1, a first infrared combustion plate 2, a partition 13a, a middle ring fire cover 3, an air supply channel cover 4, a second infrared combustion plate 5, a guide plate and an ignition needle 8.

[0055] like Figures 2 to 5As shown, the base 1 has an inner ring cavity 11 that is annular and extends upward, an outer ring cavity 12 located outside the inner ring cavity 11, and a middle ring cavity 13 located between the inner ring cavity 11 and the outer ring cavity 12. The tops of the inner ring cavity 11, the outer ring cavity 12, and the middle ring cavity 13 are all open. Three mixed gas channels are arranged on the base 1, namely, an inner ring channel 15, a middle ring channel 16, and an outer ring channel 17 arranged on the bottom of the base 1. The inner ring channel 15 is used to connect with the inner ring ejector pipe 181, and the inner ring channel 15 is connected with the inner ring cavity 11; the middle ring channel 16 is used to connect with the middle ring ejector pipe 182, and the middle ring channel 16 is connected with the middle ring cavity 13; the outer ring channel 17 is used to connect with the outer ring ejector pipe 183, and the outer ring channel 17 is connected with the outer ring cavity 12, so that the base 1 can receive the mixed gas from the ejector pipe.

[0056] like Figure 2 and Figure 3 As shown, the partition 13a is vertically arranged in the middle ring cavity 13, and extends circumferentially 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 of each other and open at the top. The gas channel 131 and the air supply channel 132 are arranged in sequence from the outside to the inside. The gas channel 131 is connected with the middle ring channel 16, and the air supply channel 132 is connected from top to bottom. The bottom opening of the air supply channel 132 is the secondary air inlet 1321 of the air supply channel 132, and the secondary air inlet 1321 is for secondary air to enter.

[0057] like Figure 2 , Figure 8 and Fig. 9 As shown, the air supply channel 132 is covered with an air supply channel cover 4 near the top opening, and the air supply channel cover 4 is annular. The air supply channel cover 4 and the air supply channel 132 together form an air supply chamber A, wherein the air supply chamber A has a secondary air outlet for secondary air to flow out. Specifically, Figure 3 and Figure 4As shown, the air supply channel cover 4 includes an inner annular wall 41 and an outer annular wall 42 located outside the inner annular wall 41. The lower circumferential edge of the outer annular wall 42 is bent inward and upward to form a liquid storage tank 421 for containing overflow liquid. At least two guide vanes 43 arranged at intervals along the circumferential direction are arranged between the inner annular wall 41 and the outer annular wall 42. The gap between two adjacent guide vanes 43 is the secondary air outlet, and the secondary air outlet is located below the fire outlet 3a. Each guide vane 43 is inclined relative to the horizontal plane in the circumferential direction or / and radial direction, and the angle between each guide vane 43 and the horizontal plane is the same. In this way, the secondary air flowing out through the secondary air outlet is a rotating wind formed by the upward flow. On the one hand, it prevents the secondary air from escaping, so that the area where the secondary air flows is increased, so that the secondary air stays at the fire outlet for a longer time; on the other hand, it can supplement the secondary air to the flame root on the middle ring fire cover, so that the combustion is more complete and the combustion efficiency is improved. In addition, in order to facilitate the overflow to be directed to the air supply channel cover, such as Figure 1 and Figure 2 As shown, the top opening of the inner ring wall 41 corresponds to the inner ring cavity 11, and the top opening of the inner ring wall 41 is covered with a guide plate for guiding the overflow to the gas replenishment channel cover 4. The guide plate in this embodiment is a porous mesh 7 that is convex upward as a whole. For details, see Figure 1 , Figure 2 , Fig.14 and Fig.15 shown.

[0058] like Figure 8 As shown, the gas channel 131 is connected to the middle ring channel 16, and the inlet of the middle ring channel 16 is the gas inlet 1311 of the gas channel 131; Figure 2 , Fig.14 and Fig.15 As shown, the top opening of the gas channel 131 is covered with a middle ring fire cover 3, and a fire hole 3a connecting the gas channel 131 with the outside is opened on the middle ring fire cover 3, and the fire hole 3a faces the gas supply channel 132; specifically, the middle ring fire cover 3 includes a lower cover 31 and an upper cover 32 placed on the lower cover 31, the upper cover 32 is in the shape of an inverted cone, and a plurality of convex ribs 33 are arranged at intervals along the circumferential direction on the lower surface of the upper cover 32, and each convex rib 33 extends in a direction having an acute angle with the radial direction, so that the whole presents a clockwise or counterclockwise rotation direction in the circumferential direction, and a fire hole 3a is formed between the upper cover 32, the lower cover 31 and two adjacent convex ribs 33, so that there are multiple fire holes 3a and they are arranged at intervals along the circumferential direction, and each fire hole 3a gradually inclines from bottom to top toward the center of the gas supply channel cover 4; the extension direction of the above-mentioned convex rib 33 is consistent with the extension direction of the fire hole 3a. In addition, the inner peripheral edge of the upper cover 32 extends vertically upward to form a neck 321, and has an inwardly protruding circumferential rib 322 adjacent to the top of the neck 321. The presence of the circumferential rib 322 provides a certain barrier to the overflow, preventing the overflow from entering the fire outlet and clogging the fire outlet.

[0059] like Figure 2 As shown, the upper cover 32 mentioned above covers the middle ring cavity 13 and is enclosed with the outer ring cavity 12 to form an outer ring mixing chamber. The first infrared combustion plate 2 is annular and is provided with first fire holes 21. The thickness of the first infrared combustion plate 2 is 10-12 mm, and the strength of the first fire holes 21 is 0.15-0.5 w / mm2. The first infrared combustion plate 2 is arranged in the outer ring mixing chamber and the first infrared combustion plate 2 covers the top opening of the outer ring mixing chamber. In addition, the first infrared combustion plate 2 gradually tilts downward from the outside to the inside and is located above the fire outlet hole 3a. When the first side 6a of the energy focusing cover is facing upwards, it is suitable for a pointed bottom pot to be placed thereon, so that the radiation angle coefficient of the first infrared combustion plate is increased, the effective heating area at the bottom of the pot is large, and the bottom surface of the pointed bottom pot is heated evenly; when the second side 6b of the energy focusing cover is facing upwards, it is suitable for a frying pan to be placed thereon, so that the radiation angle coefficient of the first infrared combustion plate is reduced, and the heating area of ​​the bottom of the frying pan is reduced, thereby avoiding heat energy loss caused by the escape of infrared rays when heating the frying pan.

[0060] like Figure 1 , Figure 2 , Fig.14 and Fig.15 As shown, the inner ring cavity 11 is provided with a second infrared combustion plate 5 covering the top opening thereof, the top surface of the second infrared combustion plate 5 is located above the fire outlet hole 3a, the second infrared combustion plate 5 is arranged at a position adjacent to the top opening thereof, and 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 hole 21 is 0.15-0.5w / mm2, the opening rate and the fire hole strength of the second infrared combustion plate are both low, and the minimum firepower can reach 1 / 2-1 / 5 of that of a conventional atmospheric burner. In addition, the inner ring cavity 11 has a channel 111 which passes through from top to bottom, and the outer peripheral wall of the channel 111 and the inner peripheral wall of the inner ring cavity 11 enclose an annular channel 112 for the inner ring gas to enter, and the second infrared combustion plate 5 is located in the annular channel 112, as shown in FIG. Figure 2 As shown, 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 porous mesh 7 .

[0061] The first infrared combustion plate and the second infrared combustion plate in the above embodiments are both formed by a plurality of annular porous ceramic plates, and other structures in the prior art may also be adopted.

[0062] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part respectively), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A stove burner, comprising The base (1) comprises an annular inner ring cavity (11), an outer ring cavity (12) located outside the inner ring cavity (11) and open at the top, and a middle ring cavity (13) located between the inner ring cavity (11) and the outer ring cavity (12); The first infrared combustion plate (2) is annular and is disposed adjacent to the top of the outer ring cavity (12) to cover the top opening of the outer ring cavity (12), and has first fire holes (21) distributed thereon; It is characterized in that Also includes A partition (13a) is vertically arranged in the middle ring cavity (13) and extends in the circumferential direction to separate the inner cavity of the middle ring cavity (13) from the outside to the inside into a gas channel (131) and a gas supplement channel (132) that are independent of each other and open at the top; The gas channel (131) has a gas inlet (1311), and the air supply channel (132) has a secondary air inlet (1321) for secondary air to enter at a position adjacent to the bottom; A middle ring fire cover (3) covers the top opening of the gas channel (131) and is provided with a fire outlet hole (3a) connecting the gas channel (131) with the outside; and An air supply channel cover (4) covers the top opening of the air supply channel (132) and forms an air supply chamber (A) together with the air supply channel (132), wherein the air supply chamber (A) has a secondary air outlet for secondary air to flow out; The secondary air outlet is located below the fire outlet (3a); The air supplement channel cover (4) comprises an inner annular wall (41) and an outer annular wall (42) located outside the inner annular wall (41), at least two guide vanes (43) arranged at intervals along the circumferential direction are arranged between the inner annular wall (41) and the outer annular wall (42), and the gap between two adjacent guide vanes (43) is the secondary air outlet; Each of the guide vanes (43) is arranged to be inclined relative to a horizontal plane in a circumferential direction or / and a radial direction, and the angles between each of the guide vanes (43) and the horizontal plane are the same; The lower circumference of the outer annular wall (42) bends inwardly and upwardly to form a liquid storage groove (421).

2. The stove burner according to claim 1, characterized in that: The top opening of the inner ring wall (41) corresponds to the inner ring cavity (11), and the top opening of the inner ring wall (41) is covered with a guide plate for guiding overflow to the air supply channel cover (4).

3. The stove burner according to claim 2, characterized in that: The guide plate is a porous mesh (7) that is convex upward as a whole.

4. The stove burner according to claim 2, characterized in that: A second infrared combustion plate (5) is provided near the top of the inner ring cavity (11) to cover the top opening thereof, and second fire holes (51) are distributed on the second infrared combustion plate (5).

5. The stove burner according to claim 4, characterized in that: An ignition needle (8) is arranged on the base (1), and a vertically penetrating channel (111) is provided inside the inner ring cavity (11), and an outer peripheral wall of the channel (111) and an inner peripheral wall of the inner ring cavity (11) enclose an annular channel (112) for the inner ring gas to enter, 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.

6. The stove burner according to claim 1, characterized in that: The base (1) has a middle ring channel (16) in fluid communication with the gas channel (131), and an inlet of the middle ring channel (16) is opened on the outer peripheral wall of the base (1), and the inlet is the gas inlet (1311).

7. The stove burner according to claim 1, characterized in that: The air supply channel (132) is connected vertically, and the bottom opening of the air supply channel (132) is the secondary air inlet (1321).

8. The stove burner according to any one of claims 1 to 7, characterized in that: There are a plurality of fire outlet holes (3a) arranged at intervals along the circumferential direction, and each fire outlet hole (3a) is gradually inclined from bottom to top toward the center of the air supply channel cover (4).

9. The stove burner according to claim 8, characterized in that: The middle ring 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 the shape of an inverted cone, and a plurality of convex ribs (33) are arranged at intervals along the circumferential direction on its lower surface; each of the convex ribs (33) extends along a direction having an acute angle with the radial direction, so that the whole presents a clockwise or counterclockwise rotation direction in the circumferential direction; the upper cover (32), the lower cover (31) and two adjacent convex ribs (33) form the fire outlet (3a).

10. The stove burner according to claim 9, characterized in that: The inner periphery of the upper cover (32) extends vertically upward to form a neck (321), and has an inwardly protruding circumferential rib (322) at a position adjacent to the top end of the neck (321).

11. A cooker having a cooker burner according to any one of claims 1 to 10, characterized in that: The invention also comprises a stove panel (10) and an energy collecting cover (6) having a cavity (61) therein; the stove panel (10) is provided with a mounting hole (101); the burner is embedded in the mounting hole (101); the energy collecting cover (6) is located at the periphery of the burner; and the portion of the energy collecting cover (6) located in the mounting hole (101) is lower than the stove panel (10).

12. The cooker according to claim 11, characterized in that: A partition plate (62) extending in the circumferential direction is arranged in the cavity (61) of the energy gathering cover (6); the cavity (61) is divided by the partition plate (62) into at least two mutually independent sub-chambers (611) arranged up and down; and the upper surface of the partition plate (62) is a reflection surface (621) that reflects infrared rays.

13. The cooker according to claim 12, characterized in that: The inner peripheral edge of one of the upper and lower outer surfaces of the energy gathering cover (6) is lower than the outer peripheral edge, and the other outer surface is at least partially a substantially horizontal shelf surface.

Images