Distributor, stove burner and gas stove

Abstract

The distributor comprises an inner ring part, an outer ring part and a secondary air flow channel, the inner ring part and the outer ring part are arranged in a spaced mode, a fuel gas flow channel and the secondary air flow channel which are independent of each other are formed between the inner ring part and the outer ring part, and the secondary air flow channel is provided with an air inlet and an air outlet in the air flowing direction; the cross sectional area of the air inlet is larger than that of the air outlet, and the occupied area of the secondary air flow channel in the circumferential direction is 0.6-0.7 time of the area of the gap between the inner ring part and the outer ring part in the circumferential direction. Therefore, compared with the prior art, the cross sectional area of the air inlet of the secondary air flow channel is increased, the space occupation of the secondary air flow channel in the circumferential direction is increased, the flow speed of secondary air is increased, and the flowing area of the secondary air is increased, so that the flow of the secondary air is increased, and the secondary air can be sufficiently supplemented; therefore, complete combustion of fuel gas is promoted, and heat efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and particularly relates to a flame divider, a cooking burner, and a gas stove. Background Art

[0002] Gas cookers are essential kitchen cooking appliances in daily family life, and the structure of the cooking burner directly affects the performance of the gas stove.

[0003] Most of the flame dividers of the existing burners on the market are double-ring flame dividers. In order to make the combustion more complete, it is necessary to supplement secondary air to the cooking burner. In the prior art, a secondary air flow channel for supplementing air is usually arranged between the double rings, and a gas flow channel is also arranged between the double rings. The arrangement of the gas flow channel will occupy more space, reducing the space of the secondary air flow channel, resulting in a decrease in the amount of air entering the secondary air flow channel and an inability to sufficiently supplement the secondary air, causing the gas not to burn completely and reducing the thermal efficiency of the cooker. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide a flame divider that increases the cross-sectional area of the air inlet of the secondary air flow channel, improves the flow rate of the secondary air, so as to increase the secondary air flow rate and promote the complete combustion of the gas.

[0005] A second aspect of the present invention provides a cooking burner using the above flame divider.

[0006] A third aspect of the present invention provides a gas stove using the above cooking burner.

[0007] The flame divider according to an embodiment of the present invention includes: an inner ring part and an outer ring part, the inner ring part and the outer ring part are arranged at intervals, and an independent gas flow channel and a secondary air flow channel are formed therebetween. The secondary air flow channel has an air inlet and an air outlet along the air flow direction, the cross-sectional area of the air inlet is larger than that of the air outlet, and the occupied area of the secondary air flow channel in the circumferential direction is 0.6 to 0.7 times the area of the gap between the inner ring part and the outer ring part in the circumferential direction.

[0008] Compared with the prior art, the flame divider according to an embodiment of the present invention increases the cross-sectional area of the air inlet of the secondary air flow channel, increases the space occupied by the secondary air flow channel in the circumferential direction, increases the flow rate of the secondary air, and increases the flow area of the secondary air, thereby increasing the secondary air flow rate, being able to sufficiently supplement the secondary air to promote the complete combustion of the gas, and improving the thermal efficiency.

[0009] In some embodiments, the inner surface of at least one sidewall of the secondary air flow channel is inclined, and the inner surface of at least one inclined sidewall is inclined downward from top to bottom in a direction away from the sidewall opposite thereto. In this way, by inclining the inner surface of at least one sidewall of the secondary air flow channel and defining the inclination direction of the inner surface of the sidewall of the secondary air flow channel, the cross-sectional area at the air inlet can be increased, so that the cross-sectional area of the secondary air flow channel gradually decreases in the air flow direction, thereby increasing the flow velocity of the secondary air.

[0010] In some embodiments, the angle between the inner surface of the inclined sidewall of the secondary air flow channel and the vertical direction is α, where 1° ≤ α ≤ 10°. In this way, the cross-sectional area of the secondary air flow channel can gradually decrease in the air flow direction, which has the effect of increasing the air flow velocity and can improve the flow rate of the secondary air.

[0011] In some embodiments, the outer surface of the bottom wall of the outer ring portion opposite to the secondary air flow channel is configured as a downwardly concave arc surface. With this setting, the arc surface is located on both sides in the circumferential direction of the gas flow channel, ensuring that the secondary air flow channel and the gas flow channel do not interfere with each other, avoiding affecting the gas flow in the gas flow channel, ensuring smooth gas flow, and configuring the outer surface of the bottom wall of the outer ring portion as a downwardly concave arc surface can guide the lateral secondary air so that more secondary air flows into the secondary air flow channel.

[0012] In some embodiments, the outer surface of the bottom wall of the outer ring portion is an arc surface, and the center of the arc surface is located above the outer wall of the outer ring portion and outside the inner surface of the outer wall of the outer ring portion. With this setting, it can be ensured that the outer surface of the bottom wall of the outer ring portion is a downwardly concave arc, and in the vertical direction, the bottom end of the outer surface of the outer wall of the outer ring portion is located below the bottom end of the inner surface of the outer wall of the outer ring portion. The outer surface of the bottom wall of the outer ring portion extends obliquely upward in an arc shape from the outer surface of the outer wall of the outer ring portion toward the inner surface of the outer wall of the outer ring portion, making the space at the air inlet of the secondary air flow channel more open, enabling more secondary air to flow along the outer surface of the bottom wall of the outer ring portion into the secondary air flow channel, reducing the loss of impact kinetic energy of the secondary air when flowing to the outer surface of the bottom wall of the outer ring portion, increasing the air flow velocity, and thus improving the flow rate of the secondary air.

[0013] In some embodiments, the center of the arc surface is located on the extension line of the inner surface of the outer wall of the outer ring portion. With this setting, on the premise of ensuring the guiding effect of the arc surface, the flow path of the secondary air when flowing into the secondary air flow channel can be extended, further reducing the loss of impact kinetic energy of the secondary air when flowing to the outer surface of the bottom wall of the outer ring portion, further increasing the air flow velocity, improving the flow rate of the secondary air, realizing the full supplement of the secondary air, promoting the complete combustion of the gas, and improving the thermal efficiency.

[0014] In some embodiments, there are multiple gas flow channels and multiple secondary air flow channels, and the number of the gas flow channels is the same as that of the secondary air flow channels. The multiple gas flow channels and the multiple secondary air flow channels are alternately distributed in the circumferential direction. Such an arrangement can ensure an adequate supply of gas and increase the intake area of the secondary air to ensure complete combustion of the gas.

[0015] In some embodiments, the upper and lower sides of the secondary air flow channel are open. The upper side of the secondary air flow channel forms the air outlet, and the lower side forms the air inlet. The air flows from the air inlet towards the air outlet. In this way, the structural complexity of the burner can be reduced. There is no need to provide a secondary air flow channel with a complex structure, which reduces the installation difficulty and the space occupation. The air inlet and the air outlet of the secondary air flow channel of the present application are respectively arranged on the lower side and the upper side and are opposite to each other, which can reduce the flow path of the secondary air, enabling the secondary air flowing in from the air inlet to quickly flow out from the air outlet. Moreover, its cross-sectional area gradually decreases in the direction towards the air outlet, increasing the flow velocity of the secondary air and improving the flow rate of the secondary air.

[0016] The cooking burner according to an embodiment of the present invention includes: a burner head, the burner of any one of the above embodiments, an outer ring burner cap and an inner ring burner cap. The burner is arranged above the burner head. The outer ring burner cap is communicated with the outer ring part, and the inner ring burner cap is communicated with the inner ring part.

[0017] The gas stove according to an embodiment of the present invention includes a housing and the cooking burner described in the above embodiment. In this way, the gas stove can effectively reduce flue gas and improve the thermal efficiency.

[0018] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0020] Figure 1 is a schematic structural diagram of a cooking burner according to an embodiment of the present invention;

[0021] Figure 2 is an exploded schematic diagram of a cooking burner according to an embodiment of the present invention;

[0022] Figure 3 is a cross-sectional view of a cooking burner according to an embodiment of the present invention;

[0023] Figure 4Schematic diagram of the side wall of the secondary air flow channel being inclined according to an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the bottom wall of the outer ring portion being configured as an arc surface according to an embodiment of the present invention;

[0025] Figure 6 Schematic diagram of the center of the arc surface being located on the extension line of the outer wall of the outer ring portion according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] Cooktop burner 1000,

[0028] Diverter 100, burner head 200, outer ring burner cap 300, inner ring burner cap 400,

[0029] Inner ring portion 10,

[0030] Outer ring portion 20, bottom wall 21, outer wall 22,

[0031] Gas flow channel 30,

[0032] Secondary air flow channel 40, air inlet 41, air outlet 42,

[0033] Inner ring gas outlet 210, outer ring gas outlet 220,

[0034] Outer ring of the burner head 230, outer ring injection pipe 2301, outer ring mixing chamber 2302,

[0035] Inner ring of the burner head 240, inner ring injection pipe 2401, inner ring mixing chamber 2402,

[0036] Outer ring flame holes 310, inner ring flame holes 410. Detailed implementation manners

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0038] Next, reference is made to Figures 1 - 6 Describe the diverter 100, cooktop burner 1000 and gas stove according to the embodiments of the present invention.

[0039] As Figures 2 - 4As shown in the figure, the burner 100 according to an embodiment of the present invention includes an inner ring portion 10, an outer ring portion 20, and a secondary air flow passage 40. The inner ring portion 10 and the outer ring portion 20 are arranged at intervals, and an independent gas flow passage 30 and a secondary air flow passage 40 are formed therebetween. The secondary air flow passage 40 has an air inlet 41 and an air outlet 42 along the air flow direction. The cross-sectional area of the air inlet 41 is larger than that of the air outlet 42. The occupied area of the secondary air flow passage 40 in the circumferential direction is 0.6 to 0.7 times the area of the gap between the inner ring portion 10 and the outer ring portion 20 in the circumferential direction.

[0040] Specifically, the inner ring portion 10 and the outer ring portion 20 are concentrically arranged. The inner ring portion 10 is located at the center of the burner 100, and the outer ring portion 20 is located at the edge of the burner 100. A gap is formed between the inner ring portion 10 and the outer ring portion 20, and an independent gas flow passage 30 and a secondary air flow passage 40 are formed in the gap. The burner 100 is provided with a plurality of gas flow passages 30 at intervals. The plurality of gas flow passages 30 are arranged at intervals along the circumferential direction of the burner 100. Except for the gas flow passages 30, the other areas in the gap between the inner ring portion 10 and the outer ring portion 20 are the secondary air flow passage 40 for the secondary air to flow through.

[0041] It should be noted that the gas flow rate is proportional to the gas flow velocity and the gas flow area, and the secondary air flow rate is proportional to the air flow velocity and the air flow area. On the premise of keeping the gas flow rate constant, increasing the flow velocity of the secondary air can increase the secondary air flow rate and ensure that more secondary air can be supplemented to promote the complete combustion of the gas.

[0042] Compared with the prior art, the present invention increases the cross-sectional area of the air inlet 41 of the secondary air flow passage 40, so that the flow velocity of the secondary air increases, and increases the space occupation of the secondary air flow passage 40 in the circumferential direction in the gap between the inner ring portion 10 and the outer ring portion 20, improving the air intake of the secondary air and allowing more secondary air to enter the air inlet 41. A plurality of independent gas flow passages 30 and a plurality of secondary air flow passages 40 are formed in the gap between the inner ring portion 10 and the outer ring portion 20. The occupied area of the plurality of secondary air flow passages 40 in the circumferential direction is 0.6 to 0.7 times the area of the gap between the two in the circumferential direction. Setting the occupied area of the plurality of secondary air flow passages 40 in the circumferential direction within this range can maximize the flow rate of the secondary air on the premise of ensuring sufficient gas flow rate to supplement more secondary air.

[0043] The air distributor 100 according to the embodiments of the present invention, compared with the prior art, increases the cross-sectional area of the air inlet 41 of the secondary air passage 40, increases the space occupied by the secondary air passage 40 in the circumferential direction, increases the flow velocity of the secondary air, and increases the flow area of the secondary air, thereby increasing the flow rate of the secondary air, being able to sufficiently supplement the secondary air to promote the complete combustion of the gas and improving the thermal efficiency.

[0044] In some embodiments, the inner surface of at least one side wall of the secondary air passage 40 is inclined, and the inner surface of at least one inclined side wall is inclined downward and away from the side wall opposite thereto.

[0045] Specifically, the secondary air passage 40 is defined by an inner ring portion 10, an outer ring portion 20, and a gas passage 30. Among them, the outer surface of the outer wall of the inner ring portion 10 forms the inner surface of the inner wall of the secondary air passage 40, the outer surface of the inner wall of the outer ring portion 20 forms the inner surface of the outer wall of the secondary air passage 40, the sides of adjacent gas passages 30 close to each other are respectively the inner surfaces of the other two side walls of the secondary air passage 40, the inner wall and the outer wall of the secondary air passage 40 extend in the circumferential direction, and its other two side walls extend in the radial direction. The gas passage 30 can be smoothly connected to the outer surface of the inner ring portion 10 and the inner surface of the outer ring portion 20 in a smooth transition, and the secondary air passage 40 has at least one side wall.

[0046] It should be noted that the inner surface of one side wall of the secondary air passage 40 can be set as an inclined surface. Exemplarily, when the inner surface of the inner wall of the secondary air passage 40 is set as an inclined surface, it is inclined downward and away from the outer wall of the secondary air passage 40; when the inner surface of the outer wall of the secondary air passage 40 is set as an inclined surface, it is inclined downward and away from the inner wall of the secondary air passage 40; when the inner surface of one side wall of the secondary air passage 40 extending in the radial direction is set as an inclined surface, it is inclined downward and away from the other side wall opposite thereto; when the inner surface of the other side wall of the secondary air passage 40 extending in the radial direction is set as an inclined surface, it is inclined downward and away from the one side wall opposite thereto.

[0047] The inner surfaces of the two side walls of the secondary air flow channel 40 can be set as inclined surfaces. Exemplarily, when the inner surface of the inner wall of the secondary air flow channel 40 and the inner surface of the outer wall of the secondary air flow channel 40 are set as inclined surfaces, that is, when the two side walls of the secondary air flow channel 40 opposite to each other in the circumferential direction are set as inclined surfaces, the inner surface of the inner wall and the inner surface of the outer wall of the secondary air flow channel 40 are respectively inclined downward in the direction away from each other; when the two side walls of the secondary air flow channel 40 extending radially and opposite to each other are set as inclined surfaces, the two are respectively inclined downward in the direction away from each other; when the inner surface of the inner wall of the secondary air flow channel 40 and the inner surface of a side wall extending radially connected thereto are set as inclined surfaces, the inner surface of the inner wall of the secondary air flow channel 40 is inclined downward in the direction away from the outer wall of the secondary air flow channel 40, and the inner surface of a side wall extending radially connected thereto is inclined in the direction away from the other side wall extending radially; when the inner surface of the outer wall of the secondary air flow channel 40 and the inner surface of a side wall extending radially connected to the other are set as inclined surfaces, the inner surface of the outer wall of the secondary air flow channel 40 is inclined downward in the direction away from the inner wall of the secondary air flow channel 40, and the inner surface of the other side wall extending radially is inclined downward in the direction away from the side wall opposite thereto.

[0048] The inner surfaces of the three side walls of the secondary air flow channel 40 can be set as inclined surfaces. Exemplarily, when the inner surface of the inner wall of the secondary air flow channel 40, the inner surface of the outer wall of the secondary air flow channel 40, and the inner surface of a side wall extending radially therebetween are set as inclined surfaces, the inner surface of the inner wall and the inner surface of the outer wall of the secondary air flow channel 40 are respectively inclined downward in the direction away from each other, and the inner surface of a side wall extending radially therebetween is inclined downward in the direction away from the side wall opposite thereto; when the inner surfaces of the two side walls extending radially and the inner surface of the inner wall or the outer wall of the secondary air flow channel 40 therebetween are set as inclined surfaces, the inner surfaces of the two side walls extending radially are respectively inclined downward in the direction away from each other, the inner surface of the inner wall of the secondary air flow channel 40 therebetween is inclined downward in the direction away from the outer wall of the secondary air flow channel 40, or the inner surface of the outer wall of the secondary air flow channel 40 therebetween is inclined downward in the direction away from the inner wall of the secondary air flow channel 40.

[0049] The inner surfaces of the four side walls of the secondary air flow channel 40 can be set as inclined surfaces. By setting it like this, the secondary air flow channel 4 can be formed into a tapered tube structure. Among them, the inner surface of the inner wall and the inner surface of the outer wall of the secondary air flow channel 40 are respectively inclined downward in the direction away from each other, and the inner surfaces of the two side walls of the secondary air flow channel 40 extending radially are respectively inclined downward in the direction away from each other.

[0050] In this way, by inclinedly arranging the inner surface of at least one side wall of the secondary air flow channel 40 and defining the inclination direction of the inner surface of the side wall of the secondary air flow channel 40, the cross-sectional area at the air inlet 41 can be increased, so that the cross-sectional area of the secondary air flow channel 40 gradually decreases in the air flow direction, thereby increasing the flow rate of the secondary air.

[0051] The more the number of inner surfaces of the side walls of the secondary air flow channel 40 arranged as inclined planes, the more obvious the effect of increasing the air flow rate, which can further increase the flow rate of the secondary air, so as to achieve sufficient secondary air supplement, promote complete combustion, and thus improve the thermal efficiency of the cooker.

[0052] Specifically, as Figure 4 shown, the included angle between the inner surface of the inclined side wall of the secondary air flow channel 40 and the vertical direction is α, and 1° ≤ α ≤ 10°. The inner surface of at least one side wall of the secondary air flow channel 40 is inclined downward from top to bottom in a direction away from the opposite side wall. The included angle between the inner surface of the inclined side and the vertical direction is the included angle between this inner surface and the extension line vertically downward from the top of this inner surface. Setting the included angle within this range can make the cross-sectional area of the secondary air flow channel 40 gradually decrease in the air flow direction, have the effect of increasing the air flow rate, can increase the flow rate of the secondary air, and the spatial layout is more reasonable, avoiding interfering with the setting and operation of other components. Preferably, the included angle between the inner surface of the inclined side wall of the secondary air flow channel 40 and the vertical direction is 5°.

[0053] As Figure 5 shown, further, the outer surface of the bottom wall 21 of the outer ring part 20 opposite to the secondary air flow channel 40 is configured as a downwardly concave arc surface.

[0054] Specifically, the bottom wall 21 of the outer ring part 20 is located outside the secondary air flow channel 40. The bottom wall 21 of the outer ring part 20 is divided into a part communicating with the gas flow channel 30 and a part opposite to the secondary air flow channel 40. Among them, the outer surface of the part of the bottom wall 21 of the outer ring part 20 opposite to the secondary air flow channel 40 is set as a downwardly concave arc surface. Such a setting makes the arc surface located on both sides in the circumferential direction of the gas flow channel 30, ensuring that the secondary air flow channel 40 and the gas flow channel 30 do not interfere with each other, avoiding affecting the gas flow in the gas flow channel 30, ensuring that the gas can flow smoothly, and configuring the outer surface of the bottom wall 21 of the outer ring part 20 opposite to the secondary air flow channel 40 as a downwardly concave arc surface can guide the lateral secondary air, so that more secondary air flows to the secondary air flow channel 40.

[0055] As Figure 5 and Figure 6As shown, further, the outer surface of the bottom wall 21 of the outer ring part 20 is an arc surface, and the center of the arc surface is located above the outer wall 22 of the outer ring part 20 and outside the inner surface of the outer wall 22 of the outer ring part 20. With this setting, it can be ensured that the outer surface of the bottom wall 21 of the outer ring part 20 is a concave arc, and in the vertical direction, the bottom end of the outer surface of the outer wall 22 of the outer ring part 20 is located below the bottom end of the outer surface of the inner wall of the outer ring part 20. The outer surface of the bottom wall 21 of the outer ring part 20 extends upward in an arc shape from the outer surface of the outer wall 22 of the outer ring part 20 toward the outer surface of the inner wall of the outer ring part 20, making the space at the air inlet 41 of the secondary air flow channel 40 more open, enabling more secondary air to flow along the outer surface of the bottom wall 21 of the outer ring part 20 toward the secondary air flow channel 40, reducing the impact kinetic energy loss of the secondary air when flowing to the outer surface of the bottom wall 21 of the outer ring part 20, increasing the air flow rate, and thus increasing the flow rate of the secondary air.

[0056] As Figure 6 shown, preferably, the center of the arc surface is located on the extension line of the inner surface of the outer wall 22 of the outer ring part 20.

[0057] It should be noted that the outer wall 22 of the outer ring part 20 is vertically arranged, the center of the outer surface of the bottom wall 21 of the outer ring part 20 is located on the upper extension line of the inner surface of the outer wall 22 of the outer ring part 20, and the arc surface is tangent to the inner surface of the outer wall 22 of the outer ring part 20, that is, the lowest point of the arc surface coincides with the bottom end of the inner surface of the outer wall 22 of the outer ring part 20. With this setting, on the premise of ensuring the guiding effect of the arc surface, the flow path of the secondary air when flowing toward the secondary air flow channel 40 can be extended, further reducing the impact kinetic energy loss of the secondary air when flowing to the outer surface of the bottom wall 21 of the outer ring part 20, further increasing the air flow rate, increasing the flow rate of the secondary air, achieving full replenishment of the secondary air, promoting complete combustion of the gas, and improving the thermal efficiency.

[0058] In some embodiments, both the gas flow channel 30 and the secondary air flow channel 40 are multiple, and the number of the gas flow channels 30 is the same as that of the secondary air flow channels 40. The multiple gas flow channels 30 and the multiple secondary air flow channels 40 are alternately distributed in the circumferential direction. As Figure 1 shown, the burner head 100 includes three gas flow channels 30 and three secondary air flow channels 40, and there is one secondary air flow 40 between two adjacent gas flow channels 30. In this application, the occupied area of the multiple secondary air flow channels 40 in the circumferential direction is 0.6 to 0.7 times the total area of the gap between the inner ring part 10 and the outer ring part 20 in the circumferential direction. Setting multiple gas flow channels 30 can ensure sufficient gas volume. Setting the occupied area of the multiple secondary air flow channels 40 in the circumferential direction within this range can increase the intake area of the secondary air to supplement more secondary air and ensure complete combustion.

[0059] AsFigures 2 - 6 As shown, in some embodiments, the secondary air flow path 40 is open at both the upper and lower sides. An air outlet 42 is formed on the upper side of the secondary air flow path 40, and an air inlet 41 is formed on the lower side thereof. The air flows from the air inlet 41 towards the air outlet 42.

[0060] Specifically, the secondary air flow path 40 is formed in the gap between the inner ring portion 10 and the outer ring portion 20. The outer wall of the inner ring portion 10, the inner wall of the outer ring portion 20, and the side of the adjacent gas flow path 30 close to each other define the side walls of the secondary air flow path 40. The upper and lower sides of the secondary air flow path 40 are open. The secondary air flows from the air inlet 41 located on the lower side into the secondary air flow path 40 and flows out from the air outlet 42 located on the upper side. The secondary air flows upward from bottom to top and reacts fully with the ejected gas to enable the gas to burn completely.

[0061] In this way, the structural complexity of the burner 100 can be reduced. There is no need to provide a secondary air flow path 40 with a complex structure, which reduces the setting difficulty and the space occupation. The air inlet 41 and the air outlet 42 of the secondary air flow path 40 of the present application are respectively arranged on the lower side and the upper side and are opposite to each other, which can reduce the flow path of the secondary air flow path 40, enable the secondary air flowing in from the air inlet 41 to flow out quickly from the air outlet 42, and its cross-sectional area gradually shrinks in the direction towards the air outlet 42, increasing the flow velocity of the secondary air and improving the flow rate of the secondary air.

[0062] As Figures 1 - 3 shown, the cooking appliance burner 1000 according to an embodiment of the present invention includes: a burner head 200 and the burner 100 in the above embodiment. The burner 100 is arranged above the burner head 200. The inner ring gas outlet 210 of the burner head 200 is communicated with the inner ring portion 10, and the outer ring gas outlet 220 of the burner head 200 is communicated with the gas flow path 30. The burner head 200 has a plurality of ejector tubes and a plurality of mixing chambers. Each ejector tube corresponds to a mixing chamber, and the mixing chamber is communicated with the burner 100.

[0063] Specifically, the burner 100 is installed on the top of the burner head 200. The burner head 200 has an inner ring gas outlet 210 and an outer ring gas outlet 220. The inner ring gas outlet 210 is located at the center position of the burner head 200. The inner diameter of the outer ring gas outlet 220 is larger than the inner diameter of the inner ring gas outlet 210. The inner ring portion 10 is correspondingly arranged above the inner ring gas outlet 210 and is communicated with the inner ring gas outlet 210. The outer ring portion 20 is correspondingly arranged above the outer ring gas outlet 220 and is communicated with the outer ring gas outlet 220. The burner head 200 has an equal number of ejector tubes and mixing chambers. The gas is sprayed into the ejector tubes and burns fully in the mixing chambers corresponding to the ejector tubes, and enters the burner 100 through the inner ring gas outlet 210 and the outer ring gas outlet 220.

[0064] Since the cooking burner 1000 provided by the embodiment of the present invention includes the burner head 100 provided by the above embodiment, which has the same technical effects as the burner head 100, the furnace head 200 is communicated with the burner head 100. The gas first enters the furnace head 200 for mixing and combustion in the furnace head 200, and then enters the burner head 100, which can further burn the gas, ensure that the gas can be completely burned, and improve the thermal efficiency of the cooking burner 1000.

[0065] As Figures 1 - 3 shown, in some embodiments, the furnace head 200 includes a furnace head outer ring 230 and a furnace head inner ring 240. The furnace head outer ring 230 is provided with an outer ring injection pipe 2301 and an outer ring mixing chamber 2302, and the furnace head inner ring 240 is provided with an inner ring injection pipe 2401 and an inner ring mixing chamber 2402. Both the outer ring injection pipe 2301 and the inner ring injection pipe 2401 have a primary air inlet for injecting primary air. The gas is mixed with the primary air in the outer ring mixing chamber 2302 to enter the outer ring part 20, and the gas is mixed with the primary air in the inner ring mixing chamber 2402 to enter the inner ring part 10.

[0066] It should be noted that the gas is sprayed into the outer ring injection pipe 2301 of the furnace head outer ring 230 through the outer ring nozzle, and the primary air is injected through the primary air inlet on the outer ring injection pipe 2301. The gas is mixed with the air in the outer ring mixing chamber 2302 and enters the gas flow channel 30 through the outer ring air outlet 220, and then enters the outer ring part 20; the gas is sprayed into the inner ring injection pipe 2401 of the furnace head inner ring 240 through the inner ring nozzle, and the primary air is injected through the primary air inlet on the inner ring injection pipe 2401. The gas is mixed with the air in the inner ring mixing chamber 2402 and enters the inner ring part 10 through the inner ring air outlet 210.

[0067] With such a setting, the gas is first mixed and burned with the primary air in the inner ring mixing chamber 2402 and the outer ring mixing chamber 2302 respectively, and then enters the burner head 100 to be mixed and burned with the secondary air, with higher combustion efficiency and higher gas utilization rate, and can reduce the flue gas.

[0068] As Figure 1 shown, specifically, the cooking burner 1000 further includes: an outer ring burner cap 300 and an inner ring burner cap 400. The outer ring burner cap 300 is arranged above the outer ring part 20 and is communicated with the outer ring part 20; the inner ring burner cap 400 is arranged above the inner ring part 10 and is communicated with the inner ring part 10; a plurality of outer ring fire holes 310 are spaced apart from each other on the outer periphery of the outer ring burner cap 300, and a plurality of inner ring fire holes 410 are spaced apart from each other on the outer periphery of the inner ring burner cap 400. The gas in the outer ring part 20 is ejected from the outer ring fire holes 310, and the gas in the inner ring part 10 is ejected from the inner ring fire holes 410 to react with the secondary air flowing out of the secondary air flow channel 40.

[0069] Specifically, the gas flow channel 30 is connected to the outer ring air outlet 220 and the outer ring part 20. The gas mixture of gas from the outer ring air outlet 220 and air flows into the gas flow channel 30 and further flows into the outer ring part 20. The outer ring burner cap 300 is arranged on the outer ring part 20. The outer ring burner cap 300 and the outer ring part 20 are connected to form a closed outer ring channel. A plurality of outer ring fire holes 310 are arranged around the outer periphery of the outer ring burner cap 300. The gas in the closed outer ring channel is ejected from the outer ring fire holes 310. And the secondary air flows into the air inlet 41 of the secondary air flow channel 40 and flows out from its air outlet 42. The gas ejected from the outer ring fire holes 310 fully reacts with the secondary air flowing out from the air outlet 42, so that the gas burns fully.

[0070] Moreover, the gas mixture of gas from the inner ring air outlet 210 and air flows into the inner ring part 10. The inner ring burner cap 400 is arranged on the inner ring part 10. The inner ring burner cap 400 and the inner ring part 10 are connected to form a closed inner ring channel. A plurality of inner ring fire holes 410 are arranged around the outer periphery of the inner ring burner cap 400. The gas in the closed inner ring channel is ejected from the inner ring fire holes 410. The ejected gas fully reacts with the secondary air flowing out from the air outlet 42, so that the gas ejected from the inner ring burns fully.

[0071] In this way, the secondary air flowing out from the air outlet 42 of the secondary air flow channel 40 can fully react with the gas ejected from the inner ring fire holes 410 and the gas ejected from the outer ring fire holes 310 respectively, so as to promote the complete combustion of the inner ring gas and the outer ring gas, and improve the thermal efficiency of the stove burner 1000.

[0072] According to the gas stove of the embodiment of the present invention, the gas stove includes a shell and the stove burner 1000 of the above embodiment. The stove burner 1000 is installed on the shell. Since the gas stove provided by the embodiment of the present invention includes the stove burner 1000 provided by the above embodiment, it has the same technical effects as the stove burner 1000. This gas stove can effectively reduce the flue gas and improve the thermal efficiency.

[0073] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0074] In the description of the present invention, the "first feature" and the "second feature" may include one or more of such features.

[0075] In the description of the present invention, "a plurality of" means two or more than two.

[0076] In the description of the present invention, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include contact between the first and second features not being direct but through additional features therebetween.

[0077] In the description of the present invention, the first feature being "on", "above", and "over" 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.

[0078] In the description of the present invention, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fire divider, characterized in that, Comprising: Inner ring part (10); Outer ring part (20), the inner ring part (10) and the outer ring part (20) are arranged at intervals, and an independent gas flow channel (30) and a secondary air flow channel (40) are formed therebetween. The secondary air flow channel (40) has an air inlet (41) and an air outlet (42) along the air flow direction. The cross-sectional area of the air inlet (41) is larger than that of the air outlet. The occupied area of the secondary air flow channel (40) in the circumferential direction is 0.6 to 0.7 times the area of the gap between the inner ring part (10) and the outer ring part (20) in the circumferential direction.

2. The sub-firearm according to claim 1, wherein The inner surface of at least one side wall of the secondary air flow channel (40) is inclined, and the inner surface of at least one inclined side wall is inclined downward and away from the side wall opposite thereto from top to bottom.

3. The fire divider according to claim 2, characterized in that, The included angle between the inner surface of the inclined side wall of the secondary air flow channel (40) and the vertical direction is α, and 1° ≤ α ≤ 10°.

4. The fire divider according to claim 1, characterized in that, The outer surface of the bottom wall (21) of the outer ring part (20) opposite to the secondary air flow channel (40) is configured as a downwardly concave arc surface.

5. The sub-firearm according to claim 4, characterized in that, The outer surface of the bottom wall (21) of the outer ring part (20) is an arc surface, and the center of the arc surface is located above the outer wall (22) of the outer ring part (20) and outside the inner surface of the outer wall (22) of the outer ring part (20).

6. The fire distributor according to claim 5, characterized in that, The center of the arc surface is located on the extension line of the inner surface of the outer wall (22) of the outer ring part (20).

7. The sub-firearm according to claim 1, characterized in that, Both the gas flow channel (30) and the secondary air flow channel (40) are multiple, and the number of the gas flow channels (30) is the same as that of the secondary air flow channels (40). The multiple gas flow channels (30) and the multiple secondary air flow channels (40) are alternately distributed in the circumferential direction.

8. The sub-firearm according to claim 1, characterized in that, The upper and lower sides of the secondary air flow channel (40) are open. The upper side of the secondary air flow channel (40) forms the air outlet (42), and the lower side forms the air inlet (41). The air flow direction is from the air inlet (41) towards the air outlet (42).

9. A cooking stove burner, characterized in that, Comprising: A burner head (200) and a burner (100) according to any one of claims 1-8, the burner (100) is provided on the burner head (200); and an outer ring burner cap (300) communicated with the outer ring part (20) and an inner ring burner cap (400) communicated with the inner ring part (10).

10. A gas stove, characterized in that, Comprising: A housing and the cooking appliance burner (1000) according to claim 9.

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