Combustor and gas stove

Abstract

The utility model relates to the technical field of kitchen utensils, and discloses a burner and a gas stove. The combustor comprises a furnace end, a gas distribution seat, an inner ring fire cover, an outer ring fire cover and an energy-gathering gas distribution disc, and a gas inlet channel is arranged in the furnace end; the gas distribution seat covers the furnace end, a gas mixing channel communicated with the gas inlet channel is arranged in the gas distribution seat, and an interval space is formed between the furnace end and the gas distribution seat; the inner ring fire cover covers the gas distribution seat; the outer ring fire cover covers the gas distribution seat and is annularly arranged on the periphery of the inner ring fire cover, an annular channel is formed between the inner ring fire cover and the outer ring fire cover, and the interval space is communicated with the annular channel; the energy-gathering gas-distributing disc is arranged in the interval space, and at least part of the energy-gathering gas-distributing disc and the annular channel are oppositely arranged up and down. According to the burner, the situation that high-temperature smoke escapes and is lost downwards from the inner ring fire cover and the outer ring fire cover can be greatly relieved, and the energy efficiency of the burner is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen utensils, in particular to a burner and a gas stove. Background Art

[0002] A gas stove is an essential kitchen utensil in daily household life. A gas stove includes a burner. Some burners include a burner head, a copper seat, an inner ring burner cap and an outer ring burner cap. The burner head is used for connecting with a nozzle for jetting gas. The copper seat is covered on the burner head. Both the inner ring burner cap and the outer ring burner cap are covered on the copper seat, and the outer ring burner cap is arranged around the outer periphery of the inner ring burner cap. After the gas in the burner head enters the copper seat, it is fully mixed and distributed into the inner ring burner cap and the outer ring burner cap, and then burns at the flame holes of the inner ring burner cap and the outer ring burner cap.

[0003] With the development of society, burners are developing towards high energy efficiency. Some burners form a spaced space between the copper seat and the burner head. This spaced space communicates with the space between the inner ring burner cap and the outer ring burner cap and is used for supplementing secondary air for the combustion of the burner to make the gas burn more fully to improve energy efficiency. However, in some cases, such as when the discharge speed of high-temperature flue gas from between the bottom of the pot and the pot rack is slow, the setting of this spaced space will also cause a part of the high-temperature flue gas to escape downward from between the inner and outer ring burner caps, thus restricting the improvement of the energy efficiency of the burner.

[0004] Therefore, there is an urgent need for a burner and a gas stove to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a burner, which can greatly alleviate the downward escape and loss of high-temperature flue gas from the inner ring burner cap and the outer ring burner cap and improve the energy efficiency of the burner.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A burner, comprising:

[0008] A burner head, in which an air inlet channel is arranged;

[0009] A gas distribution seat, covered on the burner head. A gas mixing channel communicating with the air inlet channel is arranged in the gas distribution seat. A spaced space is formed between the burner head and the gas distribution seat;

[0010] An inner ring burner cap, covered on the gas distribution seat;

[0011] An outer ring burner cap, covered on the gas distribution seat and arranged around the outer periphery of the inner ring burner cap. An annular channel is formed between the inner ring burner cap and the outer ring burner cap. The spaced space communicates with the annular channel;

[0012] The energy - concentrating gas - distributing disc is arranged in the interval space, and at least part of the energy - concentrating gas - distributing disc is arranged opposite to the annular channel up and down.

[0013] As an alternative solution, the energy - concentrating gas - distributing disc includes a main body portion. The main body portion is arranged opposite to the annular channel. An air - passing gap is formed between the main body portion and the gas distribution seat, and the air - passing gap communicates the annular channel and the outside of the burner.

[0014] As an alternative solution, the energy - concentrating gas - distributing disc further includes an energy - concentrating vortex - retaining ring. The energy - concentrating vortex - retaining ring is arranged on the upper side of the main body portion and at the edge of the main body portion. The inner side wall of the energy - concentrating vortex - retaining ring is configured as an arc surface.

[0015] As an alternative solution, a heat - insulating cavity is arranged inside the energy - concentrating vortex - retaining ring.

[0016] As an alternative solution, convex ear portions are arranged on the outer periphery of the main body portion, and the convex ear portions are configured to distribute air.

[0017] As an alternative solution, the air inlet channel includes an outer - ring air inlet channel. The gas - mixing channel includes an outer - ring gas - mixing channel communicating with the outer - ring flame holes on the outer - ring burner cap. At least two first outer - ring convex platforms are arranged on the upper side of the burner head. The first outer - ring convex platforms cooperate with the gas distribution seat to communicate the outer - ring air inlet channel and the outer - ring gas - mixing channel;

[0018] The convex ear portion is inserted between two adjacent first outer - ring convex platforms.

[0019] As an alternative solution, a first central hole is arranged on the inner - ring burner cap, and a second central hole opposite to the first central hole is arranged on the gas distribution seat;

[0020] An air - passing hole is arranged on the main body portion, and the air - passing hole communicates the outside of the burner and the second central hole.

[0021] As an alternative solution, the air inlet channel includes an inner - ring air inlet channel. The gas - mixing channel includes an inner - ring gas - mixing channel communicating with the inner - ring flame holes on the inner - ring burner cap. A first inner - ring convex platform is arranged on the upper side of the burner head. The first inner - ring convex platform cooperates with the gas distribution seat to communicate the inner - ring air inlet channel and the inner - ring gas - mixing channel;

[0022] The air - passing hole is concavely provided with a positioning groove along the radial direction of the main body portion, and the first inner - ring convex platform is inserted and matched with the positioning groove.

[0023] As an alternative solution, the energy - concentrating gas - distributing disc is connected to the gas distribution seat through fasteners.

[0024] As an alternative solution, an installation part protrudes from the lower side of the gas distribution base. An installation hole is provided on the installation part. The energy-gathering gas distributor is abutted against the lower end of the installation part so as to form a gas passing gap between the energy-gathering gas distributor and the gas distribution base.

[0025] Another object of the present utility model is to provide a gas stove. By adopting the above burner, the gas burns sufficiently, the loss of hot flue gas is small, and the energy efficiency is high.

[0026] To achieve this purpose, the present utility model adopts the following technical solutions:

[0027] The gas stove includes at least one of the above burners.

[0028] The beneficial effects of the present utility model are as follows:

[0029] In the burner of the present utility model, an interval space is formed between the furnace head and the gas distribution base. This interval space is communicated with the annular channel between the inner and outer ring burner caps. Therefore, secondary air can be supplemented for the combustion of the burner, thereby ensuring sufficient combustion of the gas. In addition, an energy-gathering gas distributor is arranged in the interval space, and at least part of the energy-gathering gas distributor is opposite to the annular channel. Therefore, when high-temperature flue gas escapes downward from the annular channel, the energy-gathering gas distributor can block the high-temperature flue gas and make the high-temperature flue gas flow upward, thereby alleviating the problem of the high-temperature flue gas escaping and dissipating downward from the inner ring burner cap and the outer ring burner cap, and improving the energy efficiency of the burner.

[0030] In the gas stove of the present utility model, by arranging the above burner, the gas burns sufficiently, the loss of hot flue gas is small, and the energy efficiency is high. Description of the Drawings

[0031] Figure 1 is a partial structural schematic diagram of the gas stove provided by the specific embodiment of the present utility model;

[0032] Figure 2 is a structural schematic diagram of the burner provided by the specific embodiment of the present utility model;

[0033] Figure 3 is an exploded view of the burner provided by the specific embodiment of the present utility model;

[0034] Figure 4 is Figure 1 the side view of the structure in

[0035] Figure 5 is Figure 1 the top view of the structure in

[0036] Figure 6 is Figure 5 the A-A cross-sectional view in

[0037] Figure 7 is Figure 5 the sectional view taken along line B-B in

[0038] Figure 8 a schematic structural view of the energy-gathering gas distributor provided by the specific embodiment of the present utility model;

[0039] Figure 9 a sectional view of the energy-gathering gas distributor provided by the specific embodiment of the present utility model.

[0040] In the figure:

[0041] 100, burner; 200, pot stand; 210, energy-gathering disk; 220, support leg; 300, thermocouple; 400, ignition pin;

[0042] 10, furnace head; 11, first inner ring boss; 111, inner ring air inlet channel; 12, first outer ring boss; 121, outer ring air inlet channel;

[0043] 20, gas distribution seat; 21, second central hole; 22, inner ring gas mixing channel; 23, outer ring gas mixing channel; 24, installation part;

[0044] 30, inner ring burner cap; 31, inner ring burner holes; 32, first central hole;

[0045] 40, outer ring burner cap; 41, outer ring burner holes;

[0046] 50, energy-gathering gas distributor; 51, main body part; 511, through hole; 512, positioning groove; 52, energy-gathering vortex ring; 521, inner side wall; 522, heat insulation cavity; 53, convex ear part; 54, through hole;

[0047] 60, annular channel;

[0048] 70, fastener. Specific Embodiment

[0049] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all structures.

[0050] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0051] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0052] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0053] As Figure 1 and Figure 2 shown, this embodiment provides a burner 100 and a gas stove. The gas stove includes a frame, a gas supply device, a burner 100, and a pot support 200. Both the gas supply device and the burner 100 are supported on the frame. The gas supply device is used to supply gas to the burner 100. The pot support 200 is arranged on the frame and surrounds the outer periphery of the burner 100. The pot support 200 is used to support cookware. In this embodiment, the pot support 200 includes feet 220 and a heat - collecting plate 210. The feet 220 are used to support the bottom of the cookware. A flue gas discharge channel is formed between the heat - collecting plate 210 and the bottom of the cookware. The setting of the heat - collecting plate 210 can block the movement of the high - temperature flue gas, enabling the high - temperature flue gas to fully contact and exchange heat with the bottom of the cookware, thereby improving the energy efficiency of the gas stove.

[0054] As Figure 2 and Figure 3As shown in the figure, the burner 100 further includes a burner head 10, a gas distribution seat 20, an inner ring burner cap 30, and an outer ring burner cap 40. Among them, an air inlet passage is provided inside the burner head 10, and the air inlet passage is communicated with a gas supply device. The gas distribution seat 20 is covered on the burner head 10, and a gas mixing passage is provided inside the gas distribution seat 20, and the gas mixing passage is communicated with the air inlet passage. The inner ring burner cap 30 is covered on the gas distribution seat 20, and a plurality of inner ring burner holes 31 are provided on the inner ring burner cap 30, and the inner ring burner cap 30 is communicated with the gas mixing passage. The outer ring burner cap 40 is covered on the gas distribution seat 20 and is arranged around the outer circumference of the inner ring burner cap 30, and an annular passage 60 is formed between the inner ring burner cap 30 and the outer ring burner cap 40. A plurality of outer ring burner holes 41 are provided on the outer ring burner cap 40, and each of the outer ring burner holes 41 is communicated with the gas mixing passage.

[0055] In this embodiment, as Figure 3 shown, the air inlet passage includes an inner ring air inlet passage 111 and an outer ring air inlet passage 121, and the gas supply device is respectively communicated with the inner ring air inlet passage 111 and the outer ring air inlet passage 121 through nozzles. The gas mixing passage includes an inner ring gas mixing passage 22 and an outer ring gas mixing passage 23, and the inner ring gas mixing passage 22 is respectively communicated with the inner ring air inlet passage 111 and the inner ring burner holes 31, and the outer ring gas mixing passage 23 is respectively communicated with the outer ring air inlet passage 121 and the outer ring burner holes 41. When the gas supply device sprays gas into the inner ring air inlet passage 111 and the outer ring air inlet passage 121 through nozzles, primary air is entrained into the inner ring air inlet passage 111 and the outer ring air inlet passage 121 at the same time. The gas and primary air in the inner ring air inlet passage 111 are preliminarily mixed and then enter the inner ring gas mixing passage 22 for further mixing, and finally are discharged and burned from the inner ring burner holes 31. The gas and primary air in the outer ring air inlet passage 121 are preliminarily mixed and then enter the outer ring gas mixing passage 23 for further mixing, and finally are discharged and burned from the outer ring burner holes 41.

[0056] Specifically, as Figure 3 shown, a first outer ring boss 12 is provided on the upper side of the burner head 10, and the outer ring air inlet passage 121 extends to the upper end surface of the first outer ring boss 12. A second outer ring boss is provided on the lower side of the gas distribution seat 20, and the outer ring gas mixing passage 23 extends to the lower surface of the second outer ring boss. The second outer ring boss abuts against the first outer ring boss 12, so that the outer ring air inlet passage 121 is communicated with the outer ring gas mixing passage 23. In this embodiment, there are four first outer ring bosses 12, and they are arranged at intervals along the circumference of the burner head 10. The number and arrangement of the second outer ring bosses correspond to those of the first outer ring bosses 12. In other embodiments, the number of the first outer ring bosses 12 can be flexibly set according to needs.

[0057] As Figure 3As shown, a first inner ring boss 11 is further provided on the upper side of the burner head 10, and the inner ring air inlet passage 111 extends to the upper end surface of the first inner ring boss 11. A second inner ring boss is provided on the lower side of the gas distribution seat 20, and the inner ring gas mixing passage 22 extends to the lower surface of the second inner ring boss. The second inner ring boss abuts against the first inner ring boss 11, so that the inner ring gas mixing passage 22 is communicated with the inner ring air inlet passage 111. In this embodiment, there are two first inner ring bosses 11, which are arranged at intervals along the circumference of the burner head 10, and the number and arrangement of the second inner ring bosses correspond to those of the first inner ring bosses 11. In other embodiments, the number of the first inner ring bosses 11 can be flexibly set according to needs.

[0058] As Figure 2 and Figure 3 shown, the gas stove further includes an ignition needle 400 and a thermocouple 300. A first central hole 32 is provided on the inner ring burner cap 30, and the ignition needle 400 extends into the first central control and is used for ignition. The thermocouple 300 is arranged in the first central hole 32 and is used for flameout protection of the burner 100. Specifically, the principle of the thermocouple 300 for flameout protection is the prior art and will not be elaborated here.

[0059] In this embodiment, as Figures 4 - 7 shown, Figure 4 、 Figure 6 and Figure 7 the dotted arrows in represent the flow path of the secondary air. An interval space is formed between the burner head 10 and the gas distribution seat 20. This interval space connects the outside of the burner 100 with the annular channel 60 and also connects the outside of the burner 100 with the first central hole 32. During the combustion of the burner 100, the outside air can enter the annular channel 60 from the interval space to supplement the secondary air at the outer ring flame holes 41, and the outside air can also enter the first central hole 32 from the interval space to supplement the secondary air at the inner ring flame holes 31. The above settings can make the gas burn more fully and improve the energy efficiency of the gas stove.

[0060] However, in some cases, such as when the discharge speed of the high-temperature flue gas from between the bottom of the pot and the pot rack 200 is slow, the setting of this interval space will also cause a part of the high-temperature flue gas to escape downward between the inner and outer ring burner caps 40, thus restricting the improvement of the energy efficiency of the burner 100.

[0061] Regarding this, as Figures 2 - 4As shown, the burner 100 further includes a concentrator air distributor 50. In this embodiment, the concentrator air distributor 50 is disposed in the spaced space, and at least a part of the concentrator air distributor 50 is disposed opposite to the annular channel 60 up and down. Therefore, when high-temperature flue gas escapes downward from the annular channel 60, the concentrator air distributor 50 can block the high-temperature flue gas and cause the high-temperature flue gas to flow upward, thereby alleviating the problem that the high-temperature flue gas escapes and dissipates downward from the inner ring burner cap 30 and the outer ring burner cap 40, and improving the energy efficiency of the burner 100. In this embodiment, the concentrator air distributor 50 is connected to the gas distribution seat 20 through a fastener 70. In other embodiments, the concentrator air distributor 50 can also be connected to the burner head 10 through a fastener 70, which is not specifically limited herein.

[0062] As Figures 3 - 7 shown, the concentrator air distributor 50 includes a main body portion 51. The main body portion 51 is disposed opposite to the annular channel 60. When high-temperature flue gas escapes downward from the annular channel 60, the main body portion 51 can block the high-temperature flue gas and cause the high-temperature flue gas to flow upward, thereby alleviating the problem that the high-temperature flue gas escapes and dissipates downward from the inner ring burner cap 30 and the outer ring burner cap 40.

[0063] In this embodiment, as Figure 6 shown, an air passage gap is formed between the main body portion 51 and the gas distribution seat 20. The air passage gap communicates the annular channel 60 and the outside of the burner 100, so as to ensure that secondary air can smoothly reach the outer ring burner holes 41. Specifically, as Figure 7 shown, an installation portion 24 protrudes from the lower side of the gas distribution seat 20. An installation hole is provided on the installation portion 24. The main body portion 51 of the concentrator air distributor 50 abuts against the lower end of the installation portion 24. The protruding installation portion 24 forms the above-mentioned air passage gap between the concentrator air distributor 50 and the gas distribution seat 20, ensuring smooth flow of secondary air. In this embodiment, as Figure 8 shown, through holes 54 are provided on the main body portion 51. The through holes 54 are disposed opposite to the installation holes. The fastener 70 passes through the through holes 54 and is connected to the installation holes, thereby realizing the fixation of the concentrator air distributor 50. Optionally, the installation holes are threaded holes and the fastener 70 is a bolt.

[0064] As Figures 6 - 8 shown, a gap is formed between the concentrator air distributor 50 and the burner head 10. Through holes 511 are further provided on the main body portion 51 of the concentrator air distributor 50, so as to ensure that external air can enter the through holes 511 through the gap and further enter the first central hole 32. Specifically, as Figure 3 and Figure 7 shown, a second central hole 21 is provided on the gas distribution seat 20. The second central hole 21 is disposed opposite to the first central hole 32 and is located below the first central hole 32. The through holes 511 are located below the second central hole 21 and are disposed opposite to the second central hole 21. As Figure 6 andFigure 7 As shown, the air outside the burner 100 enters the through holes 511 from the gap between the burner head 10 and the energy-gathering air distribution plate 50, then passes through the second central hole 21 from bottom to top and enters the first central hole 32, thereby supplementing secondary air to the inner ring flame holes 31.

[0065] Preferably, as Figure 3 and Figure 8 shown, the through holes 511 are concavely provided with positioning grooves 512 along the radial direction of the main body 51, and the first inner ring boss 11 is inserted and matched with the positioning grooves 512. When assembling the burner 100, first fix the energy-gathering air distribution plate 50 and the gas distribution plate into a component. In this embodiment, by setting the cooperation between the positioning grooves 512 and the first inner ring boss 11, it can play a positioning role in the assembly of the burner head 10 and the above-mentioned component, thereby ensuring the accurate docking of the inner ring air inlet channel 111 and the inner ring air mixing channel 22, and the accurate docking of the outer ring air inlet channel 121 and the outer ring air mixing channel 23. In this embodiment, the number of the positioning grooves 512 is the same as that of the first inner ring bosses 11, and both are two.

[0066] Preferably, as Figure 8 shown, the energy-gathering air distribution plate 50 further includes an energy-gathering vortex ring 52. The energy-gathering vortex ring 52 is arranged on the upper side of the main body 51 and at the edge of the main body 51. The inner side wall 521 of the energy-gathering vortex ring 52 is configured as an arc surface. After the main body 51 of the energy-gathering air distribution plate 50 blocks the high-temperature flue gas, it will change the flow direction of the high-temperature flue gas. On the one hand, the arc-shaped inner side wall 521 increases the flow resistance of the high-temperature flue gas, reduces the flow speed of the high-temperature flue gas, thereby forming a high-temperature flue gas vortex ring, increasing the residence time of the high-temperature flue gas in the burner 100, and then being able to better exchange heat with the cookware; on the other hand, the energy-gathering vortex ring 52 can also block the flow of the high-temperature flue gas to the side of the air passing gap, thereby further reducing the escape of the high-temperature flue gas.

[0067] As Figure 8 shown, a heat insulation cavity 522 is arranged in the energy-gathering vortex ring 52. The heat insulation cavity 522 can play a heat insulation role, further reduce heat loss, enhance the energy-gathering effect, and improve the energy efficiency of the burner 100. In some embodiments, the energy-gathering vortex ring 52 with an annular groove can be processed first. After connecting the energy-gathering vortex ring 52 with the main body 51, the annular groove and the main body 51 enclose to form the heat insulation cavity 522. In some embodiments, the energy-gathering vortex ring 52 with the heat insulation cavity 522 can be processed first, and then the energy-gathering vortex ring 52 is connected with the main body 51.

[0068] As Figures 6 - 8As shown, there are lug parts 53 arranged on the outer periphery of the main body part 51, and the lug parts 53 are configured to distribute air. Specifically, when the external air passes through the lug parts 53, it is separated by the lug parts 53. One part flows upward on the lug parts 53 and enters the annular channel 60 through the air passing gap; one part flows downward on the lug parts 53 and enters the first central hole 32 through the air passing holes 511.

[0069] Preferably, as Figure 3 shown, the lug parts 53 are inserted between two adjacent first outer ring bosses 12. The cooperation between the lug parts 53 and the first outer ring bosses 12 can further improve the positioning accuracy of the burner head 10 and the above components, and further ensure the accurate docking of the inner ring air intake channel 111 and the inner ring air mixing channel 22, and the accurate docking of the outer ring air intake channel 121 and the outer ring air mixing channel 23. In this embodiment, the number of the lug parts 53 is four, and each lug part 53 is correspondingly inserted between two adjacent first outer ring bosses 12.

[0070] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Burner, characterized in that, Comprising: A burner head (10) with an air inlet passage provided therein; A gas distribution seat (20) covering the burner head (10). A mixing gas passage communicating with the air inlet passage is provided in the gas distribution seat (20), and an interval space is formed between the burner head (10) and the gas distribution seat (20); An inner ring burner cap (30) covering the gas distribution seat (20); An outer ring burner cap (40) covering the gas distribution seat (20) and disposed around the outer periphery of the inner ring burner cap (30). An annular passage (60) is formed between the inner ring burner cap (30) and the outer ring burner cap (40), and the interval space communicates with the annular passage (60); An energy-gathering gas-distributing disc (50) disposed in the interval space, with at least a part of the energy-gathering gas-distributing disc (50) disposed opposite to the annular passage (60) up and down.

2. The burner according to claim 1, characterized in that, The energy-gathering gas-distributing disc (50) includes a main body portion (51) disposed opposite to the annular passage (60). An air passage gap is formed between the main body portion (51) and the gas distribution seat (20), and the air passage gap communicates the annular passage (60) with the outside of the burner.

3. The burner according to claim 2, characterized in that, The energy-gathering gas-distributing disc (50) further includes an energy-gathering vortex ring (52) disposed on the upper side of the main body portion (51) and at the edge of the main body portion (51). The inner side wall (521) of the energy-gathering vortex ring (52) is configured as an arc surface.

4. The burner according to claim 3, characterized in that, An insulating cavity (522) is provided in the energy-gathering vortex ring (52).

5. The burner according to claim 2, characterized in that, Convex ear portions (53) are provided on the outer periphery of the main body portion (51), and the convex ear portions (53) are configured to distribute air.

6. The burner according to claim 5, characterized in that, The air inlet passage includes an outer ring air inlet passage (121), and the mixing gas passage includes an outer ring mixing gas passage (23) communicating with outer ring burner holes (41) on the outer ring burner cap (40). At least two first outer ring bosses (12) are provided on the upper side of the burner head (10), and the first outer ring bosses (12) cooperate with the gas distribution seat (20) to communicate the outer ring air inlet passage (121) with the outer ring mixing gas passage (23); The convex ear portions (53) are inserted between two adjacent first outer ring bosses (12).

7. The burner according to claim 2, characterized in that, A first central hole (32) is provided on the inner ring burner cap (30), and a second central hole (21) opposite to the first central hole (32) is provided on the gas distribution seat (20); A through hole (511) is provided on the main body portion (51), and the through hole (511) communicates the outside of the burner with the second central hole (21).

8. The burner according to claim 7, wherein, The air inlet passage includes an inner ring air inlet passage (111), and the mixing gas passage includes an inner ring mixing gas passage (22) communicating with inner ring burner holes (31) on the inner ring burner cap (30). A first inner ring boss (11) is provided on the upper side of the burner head (10), and the first inner ring boss (11) cooperates with the gas distribution seat (20) to communicate the inner ring air inlet passage (111) with the inner ring mixing gas passage (22); The through-hole (511) is recessed with a positioning groove (512) radially outward along the main body portion (51), and the first inner ring boss (11) is inserted and fitted with the positioning groove (512).

9. The burner according to any one of claims 1-8, characterized in that, The energy-gathering gas distribution disc (50) is connected to the gas distribution seat (20) through a fastener (70).

10. Gas stove, characterized in that, It includes at least one burner according to any one of claims 1-9.

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