Burner assembly and stove

Abstract

Disclosed in the present invention are a burner assembly and a stove. The burner assembly comprises a first burner and a second burner. The first burner is annular, and first fire holes are formed in the inner periphery of the first burner. The second burner is annular, and second fire holes are formed in the inner periphery of the second burner; and the second burner is arranged above the first burner, and the inner diameter of the second burner is greater than that of the first burner. In the burner assembly, by means of arranging the second burner above the first burner and setting the inner diameter of the second burner to be greater than that of the first burner, when the first burner is successfully ignited, the second burner can be ignited from the inner periphery by means of guiding flames upwards, thereby ensuring uniform flame distribution at the bottom of a pot; the burner assembly has a simple structure and provides ease and rapidness.

Description

Burner Assemblies and Cooktops

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the priority of the Chinese patent application with application number 202311057897.7 and application name “Burner assembly and stove” filed with the China Patent Office on August 21, 2023, the priority of the Chinese patent application with application number 202311055052.4 and application name “Burner assembly and stove” filed with the China Patent Office on August 21, 2023, and the priority of the Chinese patent application with application number 202322255631.5 and application name “Burner assembly and stove” filed with the China Patent Office on August 21, 2023. Please claim priority of the Chinese patent application entitled “Burner Assembly and Stove”, the priority of the Chinese patent application with application number 202322255825.5 submitted to the China Patent Office on August 21, 2023 and application name “Burner Assembly and Stove”, and the priority of the Chinese patent application with application number 202311055729.4 submitted to the China Patent Office on August 21, 2023 and application name “Burner and Combustion Stove”, all of which are incorporated by reference in this application. Technical Field

[0003] The present invention relates to the technical field of kitchen appliances, in particular to a burner assembly and a stove. Background Art

[0004] In the related art, multiple burners are combined to form a multi-ring structure, which makes the structure of the burner more complicated, resulting in poor air circulation inside the multiple burners and poor flame uniformity.

[0005] Summary of the Invention

[0006] Embodiments of the present invention provide a burner assembly and a cooker.

[0007] According to a first aspect of the present invention, an embodiment of the present invention provides a burner assembly, the burner assembly comprising:

[0008] a first burner, the first burner being annular and having a first fire hole formed on an inner periphery thereof;

[0009] The second burner is annular and has a second fire hole formed on its inner periphery. The second burner is arranged above the first burner, and the inner diameter of the second burner is larger than that of the first burner.

[0010] The above-mentioned burner assembly is configured such that the second burner is arranged above the first burner, and the inner diameter of the second burner is larger than the inner diameter of the first burner. When the first burner is ignited successfully, the second burner can be ignited from the inner periphery by drawing the flame upward, thereby ensuring the uniformity of the flame at the bottom of the pot. The structure is simple and the operation is convenient and fast.

[0011] In certain embodiments, the inner diameter of the second burner is 1.2 to 2.5 times the inner diameter of the first burner.

[0012] This ensures that the flame generated by the burner assembly can better cover the bottom of the pot, thereby improving cooking efficiency.

[0013] In certain embodiments, the inner diameter of the second burner is 1.5 times the inner diameter of the first burner.

[0014] In this way, by adjusting the appropriate flame position, the heating area of ​​the pot bottom and the cooking efficiency can be further improved while ensuring that the flame covers the pot bottom well.

[0015] In some embodiments, the first burner includes a first lower plate, a first upper plate disposed on the first lower plate, and a first separator plate, wherein the first lower plate is formed with a first lower channel, the first upper plate is formed with a first upper channel corresponding to the first lower channel, the first lower channel and the first upper channel forming the first fire hole, and the first separator plate is disposed between the first lower plate and the first upper plate and separates the first lower channel from the first upper channel;

[0016] The depth direction of the first fire hole forms an angle θ1 with the plane where the first upper plate is located, and the range of the angle θ1 is (0°, 90°).

[0017] In this way, the first fire hole of the first burner is tilted inwardly into a cone shape, thereby ensuring the flame concentration effect of the first burner, thereby improving the flame intensity and heating efficiency of the first burner.

[0018] In certain embodiments, the angle θ1 is in the range of (0°, 60°).

[0019] In this way, the flame focusing ability of the first burner is ensured, thereby improving the heating efficiency.

[0020] In certain embodiments, the angle θ1 is 40°.

[0021] In this way, it is ensured that the flame intensity formed by the first burner is greater, so that the heating effect of the bottom of the cooking utensil is better.

[0022] In some embodiments, the second burner includes a second lower plate, a second upper plate disposed on the second lower plate, and a second partition plate, the second lower plate being formed with a second lower channel, the second upper plate being formed with a second upper channel corresponding to the second lower channel, the second lower channel and the second upper channel forming the second fire hole, and the second partition plate being disposed between the second lower plate and the second upper plate and separating the second lower channel from the second upper channel;

[0023] The depth direction of the second fire hole forms an angle θ2 with the plane where the second upper plate is located, and the range of the angle θ2 is (0°, 90°).

[0024] In this way, the second fire hole of the second burner is tilted inwardly into a cone shape, thereby ensuring the flame concentration effect of the second burner, thereby improving the flame intensity and heating efficiency of the second burner.

[0025] In certain embodiments, the angle θ2 is in the range of (0°, 60°).

[0026] In this way, the flame focusing ability of the second burner is ensured, thereby improving the heating efficiency.

[0027] In certain embodiments, the angle θ2 is 40°.

[0028] In this way, the flame intensity formed by the second burner is ensured to be greater, so that the heating effect of the bottom of the cooking utensil is better.

[0029] In certain embodiments, there is a first height difference between the first fire hole and the second fire hole, and the range of the first height difference is (15 mm, 40 mm).

[0030] This improves the ignition and heat dissipation efficiency of the burner assembly. When the first height difference is greater than 40 mm, the first height difference is too large, causing the first burner and the second burner to be too far apart, making it difficult for the first burner's flame to assist in igniting the second burner. When the first height difference is less than 15 mm, the first height difference is too small, causing the first burner and the second burner to be too close, resulting in poor heat dissipation and excessive heat inside the burner assembly, which can easily create safety hazards.

[0031] In certain embodiments, there is a first height difference between the first fire hole and the second fire hole, and the range of the first height difference is (20 mm, 30 mm).

[0032] This further improves the ignition and heat dissipation efficiency of the burner assembly. When the first height difference is greater than 30 mm, the first height difference is too large, causing the first burner and the second burner to be too far apart, making it difficult for the first burner's flame to assist in igniting the second burner. When the first height difference is less than 20 mm, the first height difference is too small, causing the first burner and the second burner to be too close together, resulting in poor heat dissipation and excessive heat buildup within the burner assembly, which can easily create safety hazards.

[0033] In certain embodiments, there is a first height difference between the first fire hole and the second fire hole, and the first height difference is 23.65 mm.

[0034] In this way, the ignition efficiency and heat dissipation efficiency of the burner assembly are higher, thereby ensuring the safety of the burner assembly.

[0035] In certain embodiments, a depth direction of the first fire hole is inclined relative to a radial direction of the first burner to form a first deflection angle, and the range of the first deflection angle is (0, 45°).

[0036] In this way, the flame of the first fire hole is gathered in a spiral shape to increase the flame intensity and ensure the combustion efficiency of the gas.

[0037] In certain embodiments, a depth direction of the first fire hole is inclined relative to a radial direction of the first burner to form a first deflection angle, and the range of the first deflection angle is (0, 30°).

[0038] In this way, while ensuring the concentration of the flame of the first fire hole, the flame intensity and heating effect are further improved.

[0039] In some embodiments, a depth direction of the first fire hole is inclined relative to a radial direction of the first burner to form a first deflection angle, and the first deflection angle is 30°.

[0040] In this way, the flame intensity and heating efficiency are higher while ensuring the flame concentration of the first fire hole.

[0041] In certain embodiments, a depth direction of the second fire hole is inclined relative to a radial direction of the second burner to form a second deflection angle, and the range of the second deflection angle is (0, 45°).

[0042] In this way, the flame of the second fire hole is gathered in a spiral shape to increase the flame intensity and ensure the combustion efficiency of the gas.

[0043] In certain embodiments, a depth direction of the second fire hole is inclined relative to a radial direction of the second burner to form a second deflection angle, and the range of the second deflection angle is (0, 30°).

[0044] In this way, while ensuring the concentration of the flame of the second fire hole, the flame intensity and heating effect are further improved.

[0045] In some embodiments, the depth direction of the second fire hole is inclined relative to the radial direction of the second burner to form a second deflection angle, and the second deflection angle is 30°.

[0046] In this way, the flame intensity and heating efficiency are higher while ensuring the flame concentration of the second fire hole.

[0047] In some embodiments, the burner assembly includes a guide plate, which is arranged between the first burner and the second burner, and there is a second height difference between the guide plate and the top of the first fire hole, and there is a third height difference between the guide plate and the bottom of the second fire hole, and the third height difference is greater than the second height difference.

[0048] In this way, an appropriate distance is maintained between the first burner, the second burner and the guide plate, respectively, so as to improve the air flow inside the burner assembly, thereby improving the combustion efficiency of the burner assembly.

[0049] In some embodiments, the second height difference is in the range of (0, 8 mm).

[0050] In this way, a suitable distance is maintained between the top of the first burner and the guide plate, so as to improve the supply of secondary air and thus improve the combustion efficiency of the first burner.

[0051] In certain embodiments, the second height difference is 5 mm.

[0052] In this way, while ensuring an appropriate distance between the top of the first burner and the guide plate, the supply of secondary air is sufficient, thereby increasing the combustion efficiency of the first burner.

[0053] In some embodiments, the third height difference is in the range of (0, 15 mm).

[0054] In this way, the bottom of the second burner is kept at an appropriate distance from the guide plate to improve the supply of secondary air, thereby improving the combustion efficiency and ensuring the flame uniformity of the burner assembly.

[0055] In some embodiments, the third height difference is 9 mm.

[0056] In this way, while ensuring that there is an appropriate distance between the bottom of the second burner and the guide plate, the supply of secondary air is sufficient, thereby making the combustion efficiency of the burner assembly higher and the flame uniformity better.

[0057] In some embodiments, the first lower plate is concavely formed with a first lower channel, and the first upper plate is convexly formed with a first upper channel; and

[0058] The first lower channel and the first upper channel face each other to form a first fire hole of the first burner.

[0059] In this way, the first upper channel of the first upper plate and the first lower channel of the first lower plate are arranged opposite to each other, so that the first fire holes of the first burner are formed opposite to each other, thereby increasing the total area of ​​the fire holes of the first burner, and further increasing the flame intensity and load upper limit of the first burner.

[0060] In some embodiments, the second lower plate is concavely formed with a second lower channel, and the second upper plate is convexly formed with a second upper channel; and

[0061] The second lower hole channel and the second upper hole channel are opposite to each other to form a second fire hole of the second burner.

[0062] In this way, the second upper channel of the second upper plate and the second lower channel of the second lower plate are arranged opposite to each other, so that the second fire holes of the second burner are formed opposite to each other, thereby increasing the total area of ​​the fire holes of the second burner, and further increasing the flame intensity and load upper limit of the second burner.

[0063] In some embodiments, a first fire transfer gap is formed between the first upper plate and the first partition plate, and the first fire transfer gap communicates with two adjacent first fire holes.

[0064] In this way, two adjacent independent first fire holes are connected together, thereby ensuring the formation of an integral flame, thereby improving the flame transfer capability and flameout resistance of the first burner.

[0065] In some embodiments, a second fire transfer gap is formed between the second upper plate and the second partition plate, and the second fire transfer gap communicates with two adjacent second fire holes.

[0066] In this way, two adjacent independent second fire holes are connected together, thereby ensuring the formation of an integral flame, thereby improving the flame transmission ability and flameout resistance of the second burner.

[0067] In some embodiments, the burner assembly further includes an ignition module, which includes an ignition needle, a thermocouple, and a first bracket, wherein the ignition needle and the thermocouple are fixed to the first bracket, and the ignition module is configured such that the ignition needle is disposed adjacent to the first fire hole.

[0068] In this way, the ignition module integrates the ignition needle and the thermocouple into one, so that the ignition needle is close to the first fire hole and located inside the burner assembly, thereby improving the ignition success rate of the first burner and the second burner, and is easy to install.

[0069] In certain embodiments, each of the first burner and the second burner includes a burner body and a guide plate. A gas channel is formed inside the burner body, and an inner ring fire hole and an outer ring fire hole are provided, which are respectively connected to the gas channel. The outer ring fire hole is arranged on the outside of the inner ring fire hole. The burner body also forms an air supply channel independent of the gas channel, and the air supply channel includes an air inlet located on the outer side wall of the burner body and an air outlet located between the inner ring fire hole and the outer ring fire hole. The guide plate is provided at the air outlet and cooperates with the inner wall of the air supply channel to define an inner ring air supply port and an outer ring air supply port, which flow toward the inner ring fire hole and the outer ring fire hole, respectively.

[0070] An embodiment of the present invention provides a cooker, which includes the burner assembly described in any one of the above embodiments.

[0071] In this way, the stove sets the second burner above the first burner, and the inner diameter of the second burner is larger than the inner diameter of the first burner. When the first burner is ignited successfully, the second burner can be ignited from the inner periphery by drawing the flame upward, thereby ensuring the uniformity of the flame at the bottom of the pot. The structure is simple, convenient and fast.

[0072] According to a second aspect of the present invention, an embodiment of the present invention provides a burner assembly, the burner assembly comprising:

[0073] a first burner, the first burner being annular and having a first fire hole formed on an inner periphery thereof;

[0074] a second burner, the second burner being annular and having a second fire hole formed on an inner circumference thereof, the second burner being arranged above the first burner, and the inner diameter of the second burner being larger than the inner diameter of the first burner;

[0075] An ignition module includes an ignition needle, a thermocouple and a first bracket. The ignition needle and the thermocouple are fixed on the first bracket. The ignition module is configured so that the ignition needle is arranged close to the first ignition hole.

[0076] The burner assembly and the ignition module integrate the ignition needle and the thermocouple into one, so that the ignition needle is close to the first fire hole and located inside the burner assembly, thereby improving the ignition success rate of the first burner and the second burner, and the installation is simple.

[0077] In certain embodiments, the ignition module is disposed between the first burner and the second burner.

[0078] In this way, the ignition module is arranged inside the burner assembly to avoid damage caused by accidental collision, thereby improving the stability and ignition efficiency of the ignition module.

[0079] In certain embodiments, the length direction of the ignition needle forms an angle α with the central axis of the first burner, and the range of the angle α is (30°, 90°).

[0080] In this way, the ignition needle is brought close to the first fire hole from above the inner periphery of the first burner to ignite the gas in the first fire hole, thereby improving the ignition success rate.

[0081] In certain embodiments, the length direction of the ignition needle forms an angle α with the central axis of the first burner, and the range of the angle α is (60°, 70°).

[0082] In this way, the positions of the ignition needle and the first fire hole are ensured to be more appropriate, so that the ignition success rate of the first burner is higher.

[0083] In certain embodiments, the ignition module is disposed inside the first burner.

[0084] In this way, the ignition needle is brought close to the first fire hole from below the inner periphery of the first burner to ignite the gas in the first fire hole, thereby improving the ignition success rate.

[0085] In certain embodiments, the first bracket includes a fixing plate and two groups of spring plates extending from the fixing plate, each group of spring plates forms a corresponding slot, and the ignition needle and the thermocouple are respectively fixed in the slot.

[0086] In this way, the ignition needle and the thermocouple are stably arranged on the first bracket, thereby ensuring normal ignition and flameout protection of the burner assembly.

[0087] In some embodiments, the first burner includes a first lower plate, a first upper plate arranged on the first lower plate, and a first partition plate, the first lower plate is formed with a first lower channel, the first upper plate is formed with a first upper channel corresponding to the first lower channel, the first lower channel and the first upper channel are opposite to each other to form the first fire hole, and the first partition plate is arranged between the first lower plate and the first upper plate, and separates the first lower channel from the first upper channel.

[0088] In this way, the first upper channel of the first upper plate and the first lower channel of the first lower plate are arranged opposite to each other, so that the first fire holes of the first burner are formed opposite to each other, thereby increasing the total area of ​​the fire holes of the first burner, and further increasing the flame intensity and load upper limit of the first burner.

[0089] In certain embodiments, the first separator plate is formed with a protrusion configured to contact an arc generated by the ignition needle.

[0090] In this way, the first partition plate forms a protrusion, which contacts the arc generated by the ignition needle to prevent the arc from running around, thereby increasing the ignition success rate and improving the user experience.

[0091] In some embodiments, the second burner includes a second lower plate, a second upper plate and a second partition plate arranged on the second lower plate, the second lower plate is formed with a second lower channel, the second upper plate is formed with a second upper channel corresponding to the second lower channel, the second lower channel and the second upper channel are opposite to each other to form the second fire hole, and the second partition plate is arranged between the second lower plate and the second upper plate, and separates the second lower channel from the second upper channel.

[0092] In this way, the second upper channel of the second upper plate and the second lower channel of the second lower plate are arranged opposite to each other, so that the second fire holes of the second burner are formed opposite to each other, thereby increasing the total area of ​​the fire holes of the second burner, and further increasing the flame intensity and load upper limit of the second burner.

[0093] In certain embodiments, the inner diameter of the second burner is 1.2 to 2.5 times the inner diameter of the first burner.

[0094] This ensures that the flame generated by the burner assembly can better cover the bottom of the pot, thereby improving cooking efficiency.

[0095] In certain embodiments, the inner diameter of the second burner is 1.5 times the inner diameter of the first burner.

[0096] In this way, by adjusting the appropriate flame position, the heating area of ​​the pot bottom and the cooking efficiency can be further improved while ensuring that the flame covers the pot bottom well.

[0097] In some embodiments, the burner assembly includes a second bracket, the first bracket is formed with a fixing hole, and the ignition module is mounted on the second bracket through the fixing hole.

[0098] In this way, while ensuring that the ignition module is stably arranged on the second bracket, the ignition needle is directed toward and close to the protrusion, thereby ensuring ignition efficiency.

[0099] In certain embodiments, there is a first height difference between the first fire hole and the second fire hole, and the range of the first height difference is (15 mm, 40 mm).

[0100] This improves the ignition and heat dissipation efficiency of the burner assembly. When the first height difference is greater than 40 mm, the first height difference is too large, causing the first burner and the second burner to be too far apart, making it difficult for the first burner's flame to assist in igniting the second burner. When the first height difference is less than 15 mm, the first height difference is too small, causing the first burner and the second burner to be too close, resulting in poor heat dissipation and excessive heat inside the burner assembly, which can easily create safety hazards.

[0101] In certain embodiments, there is a first height difference between the first fire hole and the second fire hole, and the range of the first height difference is (20 mm, 30 mm).

[0102] This further improves the ignition and heat dissipation efficiency of the burner assembly. When the first height difference is greater than 30 mm, the first height difference is too large, causing the first burner and the second burner to be too far apart, making it difficult for the first burner's flame to assist in igniting the second burner. When the first height difference is less than 20 mm, the first height difference is too small, causing the first burner and the second burner to be too close together, resulting in poor heat dissipation and excessive heat buildup within the burner assembly, which can easily create safety hazards.

[0103] In certain embodiments, there is a first height difference between the first fire hole and the second fire hole, and the first height difference is 23.65 mm.

[0104] In this way, the ignition efficiency and heat dissipation efficiency of the burner assembly are higher, thereby ensuring the safety of the burner assembly.

[0105] In some embodiments, the burner assembly includes a guide plate, which is arranged between the first burner and the second burner, and there is a second height difference between the guide plate and the top of the first fire hole, and there is a third height difference between the guide plate and the bottom of the second fire hole, and the third height difference is greater than the second height difference.

[0106] In this way, an appropriate distance is maintained between the first burner, the second burner and the guide plate, respectively, so as to improve the air flow inside the burner assembly, thereby improving the combustion efficiency of the burner assembly.

[0107] In some embodiments, the second height difference is in the range of (0, 8 mm).

[0108] In this way, a suitable distance is maintained between the top of the first burner and the guide plate, so as to improve the supply of secondary air and thus improve the combustion efficiency of the first burner.

[0109] In certain embodiments, the second height difference is 5 mm.

[0110] In this way, while ensuring an appropriate distance between the top of the first burner and the guide plate, the supply of secondary air is sufficient, thereby increasing the combustion efficiency of the first burner.

[0111] In some embodiments, the third height difference is in the range of (0, 15 mm).

[0112] In this way, the bottom of the second burner is kept at an appropriate distance from the guide plate to improve the supply of secondary air, thereby improving the combustion efficiency and ensuring the flame uniformity of the burner assembly.

[0113] In some embodiments, the third height difference is 9 mm.

[0114] In this way, while ensuring that there is an appropriate distance between the bottom of the second burner and the guide plate, the supply of secondary air is sufficient, thereby making the combustion efficiency of the burner assembly higher and the flame uniformity better.

[0115] In some embodiments, a first fire transfer gap is formed between the first upper plate and the first partition plate, and the first fire transfer gap communicates with two adjacent first fire holes.

[0116] In this way, two adjacent independent first fire holes are connected together, thereby ensuring the formation of an integral flame, thereby improving the flame transfer capability and flameout resistance of the first burner.

[0117] In some embodiments, a second fire transfer gap is formed between the second upper plate and the second partition plate, and the second fire transfer gap communicates with two adjacent second fire holes.

[0118] In this way, two adjacent independent second fire holes are connected together, thereby ensuring the formation of an integral flame, thereby improving the flame transmission ability and flameout resistance of the second burner.

[0119] An embodiment of the present invention provides a cooker, which includes the burner assembly described in any one of the above embodiments.

[0120] In the above stove, the ignition module integrates the ignition needle and the thermocouple into one, so that the ignition needle is close to the first fire hole and located inside the burner assembly, thereby improving the ignition success rate of the first burner and the second burner, and is easy to install.

[0121] According to a third aspect of the present invention, an embodiment of the present invention provides a burner, comprising:

[0122] A burner body having a gas passage formed therein and provided with an inner ring fire hole and an outer ring fire hole respectively connected to the gas passage, the outer ring fire hole being arranged around the outer side of the inner ring fire hole, the burner body further forming a gas supply passage independent of the gas passage, the gas supply passage comprising an air inlet located on the outer side wall of the burner body and an air outlet located between the inner ring fire hole and the outer ring fire hole; and

[0123] The guide plate is arranged at the air outlet and cooperates with the inner wall of the air supply channel to define an inner ring air supply port and an outer ring air supply port for respectively flowing toward the inner ring fire hole and the outer ring fire hole.

[0124] In some embodiments, the burner further comprises a mounting bracket, the mounting bracket having two connecting portions and a first fixing portion, the guide plate being connected to the first fixing portion;

[0125] The burner body includes two burner monomers that are separately arranged, one of the burner monomers is connected to the connecting portion, and one of the burner monomers is formed with the inner ring fire hole, and the other burner monomer is formed with the outer ring fire hole;

[0126] The interior of each burner unit is formed as the gas channel, and the gap between the two burner units is formed as the gas supply channel.

[0127] In some embodiments, the mounting bracket includes a base body and at least two connecting legs connected to the base body, the connecting legs extending in the height direction of the burner and having the two connecting portions and the first fixing portion, and the two burner units are arranged at intervals in the extending direction of the connecting legs;

[0128] Wherein, the air supply channel is formed by the gap between the two burner units in the height direction of the burner.

[0129] In some embodiments, the guide ring includes a guide body and a first connecting leg connected to an outer edge of the guide body, the guide body is provided at the air outlet, and the first connecting leg is connected to the first fixing portion;

[0130] The flow guide body has an outer edge and an inner edge, the outer edge cooperates with the inner wall of the air-supplement channel to define the outer ring air-supplement port, and the inner edge cooperates with the inner wall of the air-supplement channel to define the inner ring air-supplement port;

[0131] Wherein, the flow guide body is arranged to be tilted downward in the direction from the outer edge to the inner edge.

[0132] In some embodiments, the first connecting leg cooperates with the surface of the connecting portion to press and fix the burner unit having the inner ring fire hole.

[0133] In some embodiments, in the height direction of the burner, the guide body is located above the inner ring fire hole, and the projection of the inner ring fire hole on the horizontal plane is located within the area of ​​the projection of the guide body on the same horizontal plane.

[0134] In some embodiments, the deflector has an outer edge and an inner edge;

[0135] Wherein, in the height direction of the burner, the distance between the upper surface of the part of the burner monomer constituting the inner ring fire hole and the inner edge is greater than 0 mm and less than or equal to 8 mm; and / or, in the height direction of the burner, the distance between the lower surface of the part of the burner monomer constituting the outer ring fire hole and the outer edge is greater than 0 mm and less than or equal to 15 mm; and / or, in the radial direction of the burner monomer, the distance between the end face of the inner ring fire hole and the inner edge is greater than or equal to 0 mm and less than or equal to 5 mm; and / or, in the radial direction of the burner monomer, the distance between the end face of the outer ring fire hole and the outer edge is greater than or equal to 10 mm and less than or equal to 30 mm.

[0136] In some embodiments, an oil cup is further included. The oil cup is fixed to the mounting bracket and is located on the inner side of the inner ring fire hole. A receiving cavity for receiving dirt is formed in the oil cup.

[0137] In some embodiments, the mounting bracket includes a base body, the oil cup includes a cup body and a handle portion, the cup body is fixed to the base body, the handle portion is connected to the cup body and extends in a direction away from the base body, and the outer peripheral surface of the handle portion and the inner side wall of the cup body form the accommodating cavity; and / or, the mounting bracket includes a base body, the outer edge of the oil cup is formed with a supporting outer edge, the supporting outer edge is hung on the overlapping edge of the base body, the supporting outer edge is formed with a first guide surface on the side close to the base body, and the overlapping edge of the base body is formed with a second guide surface that cooperates with the first guide surface.

[0138] In some embodiments, a thermocouple and an igniter are further included which are fixed on the mounting bracket, and the guide plate is provided with an avoidance hole for the thermocouple and the igniter to pass through.

[0139] In some embodiments, a fixing bracket is further included, and the thermocouple and the igniter are mounted on the fixing bracket;

[0140] The mounting bracket includes a base, at least two connecting legs, and a connecting rib, wherein the at least two connecting legs are connected to the base, the connecting rib is connected to the base and / or the connecting legs, the connecting leg extends in the height direction of the burner and has the two connecting portions and the first fixing portion, and the connecting rib has a second fixing portion;

[0141] Wherein, the fixing bracket is connected to the second fixing part.

[0142] In some embodiments, the connecting rib also has a positioning protrusion, and the fixing bracket is provided with a positioning hole that is positioned to cooperate with the positioning protrusion; and / or, the fixing bracket includes a frame body and two clamping springs, the frame body is connected to the second fixing part, and the two clamping springs are connected to the frame body, one of the clamping springs is used to clamp or release the thermocouple, and the other clamping spring is used to clamp or release the igniter; and / or, the connecting rib is connected between the two connecting legs.

[0143] In some embodiments, the mounting bracket includes a base body and at least two connecting legs connected to the base body, the connecting legs extending in the height direction of the burner and having the two connecting portions, the first fixing portion, and the third fixing portion, and the two burner units are spaced apart in the extending direction of the connecting legs;

[0144] The burner also includes a pressure cover, which includes a cover body and at least two second connecting legs connected to the outer edge of the cover body, one of the second connecting legs is connected to the third fixing portion, and the other second connecting leg is connected to the connecting portion to cooperate with the connecting legs to clamp and fix the two burner units.

[0145] In some embodiments, the mounting bracket includes a base body and at least two connecting legs connected to the base body, the connecting legs having the two connecting portions and the first fixing portion;

[0146] The burner unit includes an ejector tube portion and a burner head portion fixedly connected to the ejector tube portion. The interior of the ejector tube portion and the interior of the burner head portion together form the gas channel. The burner head portion is provided with the inner ring fire hole or the outer ring fire hole. The ejector tube portion is connected to one of the connecting legs through a connecting portion, and the burner head portion is connected to the remaining connecting legs through the connecting portion.

[0147] In some embodiments, the ejector tube portion includes an ejector tube and a mounting edge, the ejector tube forming an ejection channel connected to the inner ring fire hole or the outer ring fire hole, and the mounting edge is connected to the outer edge of the ejector tube;

[0148] The connecting portion includes a first connecting portion provided on a connecting leg corresponding to the ejection tube portion, and the mounting edge is fixedly connected to the first connecting portion.

[0149] In some embodiments, the first connecting portion is a first connecting hole provided on the connecting leg, the mounting edge is provided with a second connecting hole, and the mounting edge and the connecting leg are fixedly connected by a fastener in cooperation with the first connecting hole and the second connecting hole.

[0150] In some embodiments, the burner head includes a combustion ring and a skirt, wherein a combustion channel connected to the inner ring fire hole or the outer ring fire hole is provided in the combustion ring, and the skirt is provided around the outer edge of the combustion ring;

[0151] The connecting portion includes a second connecting portion provided on a connecting bracket correspondingly connected to the furnace head portion, and the skirt is connected to the second connecting portion.

[0152] In some embodiments, the second connecting portion is a slot formed on the connecting leg, and the skirt is locked in the slot to fix the skirt and the connecting leg in connection.

[0153] In some embodiments, each burner unit includes an upper shell and a lower shell, wherein the upper shell and the lower shell are covered and connected, a portion of the upper shell structure and a portion of the lower shell structure together form the ejector tube portion, and the remaining portion of the upper shell structure and the remaining portion of the lower shell structure together form the burner head portion;

[0154] Wherein, the upper shell and the lower shell are both made of stainless steel.

[0155] In some embodiments, the burner unit having the inner ring fire hole further includes a first partition, a gap is formed between the portion of the upper shell forming the inner ring fire hole and the portion of the lower shell forming the inner ring fire hole, the first partition is arranged in the gap, and separates the inner ring fire hole into two sub-inner ring fire holes arranged opposite each other in the height direction of the burner; and / or, the burner unit having the outer ring fire hole further includes a second partition, a gap is formed between the portion of the upper shell forming the outer ring fire hole and the portion of the lower shell forming the outer ring fire hole, the second partition is arranged in the gap, and separates the outer ring fire hole into two sub-outer ring fire holes arranged opposite each other in the height direction of the burner.

[0156] An embodiment of the present invention provides a cooker, which includes the burner described above.

[0157] The burner based on the embodiment of the present invention is provided with a guide plate, and at the air outlet of the air supply channel formed by the burner body, the guide plate cooperates with the inner wall of the air supply channel to define an inner ring air supply port and an outer ring air supply port that flow toward the inner ring fire hole and the outer ring fire hole respectively. In this way, when the secondary air enters from the air inlet of the air supply channel, under the guiding effect of the guide plate, the secondary air will be divided into two sub-air flows, one of which will flow to the inner ring air supply port and finally flow to the inner ring fire hole, while the other will flow to the outer ring air supply port and finally flow to the outer ring fire hole. In this way, the air grabbing situation between the flames generated by the inner ring fire hole and the outer ring fire hole can be reduced, thereby improving the combustion efficiency of the stove and the burner.

[0158] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0159] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0160] FIG1 is a schematic diagram of a partial structure of a burner assembly according to an embodiment of the present invention;

[0161] Figure 2 is an enlarged view of portion A in Figure 1;

[0162] FIG3 is a top view of a first burner according to an embodiment of the present invention;

[0163] FIG4 is a top view of a second burner according to an embodiment of the present invention;

[0164] FIG5 is another enlarged view of portion A in FIG1 ;

[0165] FIG6 is a schematic structural diagram of a stove according to an embodiment of the present invention;

[0166] 7 is a partial structural diagram of an ignition module of a burner assembly according to an embodiment of the second aspect of the present invention, in which the ignition module is disposed between the first burner and the second burner;

[0167] FIG8 is a perspective assembly diagram of an ignition module according to an embodiment of the second aspect of the present invention;

[0168] 9 is another partial structural schematic diagram of the burner assembly according to the second embodiment of the present invention, in which the ignition module is disposed inside the first burner;

[0169] FIG10 is an enlarged view of portion A in FIG7 ;

[0170] 11 is a top view of a first burner according to an embodiment of the second aspect of the present invention;

[0171] 12 is a top view of a second burner according to an embodiment of the second aspect of the present invention;

[0172] FIG13 is an exploded perspective view of a burner assembly according to an embodiment of the second aspect of the present invention;

[0173] FIG14 is a perspective assembly diagram of a burner assembly according to an embodiment of the second aspect of the present invention;

[0174] FIG15 is a schematic structural diagram of a cooker according to an embodiment of the second aspect of the present invention;

[0175] FIG16 is a schematic structural diagram of a burner according to an embodiment of the third aspect of the present invention;

[0176] FIG17 is a schematic diagram of the exploded structure of the burner in FIG16;

[0177] FIG18 is a schematic structural diagram of the guide plate of the burner in FIG17;

[0178] FIG19 is a schematic structural diagram of the mounting bracket of the burner in FIG17;

[0179] FIG20 is a schematic cross-sectional view of the burner in FIG16 from one perspective;

[0180] Figure 21 is a schematic cross-sectional view of the burner in Figure 16 from another perspective

[0181] FIG22 is a partial enlarged view of point A in FIG21.

[0182] Key component symbols: Cooker 1000, Burner assembly 300, Burner head 200, First burner 101, Second burner 201, Guide plate 50, First fire hole 113, First lower plate 122, First upper plate 133, First partition plate 143, First fire transmission gap 155, Second fire hole 213, Second lower plate 222, Second upper plate 233, Second partition plate 243, Second fire transmission gap 255, First lower channel 125, First upper channel 135, Second lower channel 225, Second upper channel 2 35. Ignition module 501, second bracket 40, oil cup 60, fixing plate 701, ignition needle 503, thermocouple 504, first bracket 505, protrusion 141, fixing plate 531, spring clip 532, slot 533, fixing hole 534, burner 100; mounting bracket 10; base 11; overlapping edge 111; second guide surface 1111; connecting leg 13; connecting portion 131, first connecting portion 1311; first connecting hole 1311a; second connecting portion 1313, slot 131 3a, first fixing portion 1314, third fixing portion 1315, connecting rib 15, second fixing portion 151, positioning protrusion 153, burner unit 30, inner ring fire hole 30a, sub-inner ring fire hole 30b, air supply channel 30c, air inlet 30d, outer ring fire hole 30f, sub-outer ring fire hole 30g, gas channel 30h, inner ring air supply port 30i, outer ring air supply port 30j, air outlet 30k, upper shell 31, first baffle 32, lower shell 33, second baffle 34, ejector pipe part 35, ejector pipe 351, mounting edge 353, second connecting hole-3531, furnace head-37, combustion ring-371, skirt-373, guide body-51, guide surface-511, avoidance opening-513, outer edge-515, inner edge-517, first connecting foot-53, accommodating cavity-60a, cup body-61, handle part-63, supporting outer edge-65, first guide surface-651, thermocouple-70, igniter-71, fixing bracket-73, frame body-731, clamping spring-733, pressure cover-90, cover body-91, limiting retaining edge-911, second connecting foot 93. DETAILED DESCRIPTION

[0183] Referring to Figure 1 , an embodiment of the present invention provides a burner assembly 300 comprising a first burner 101 and a second burner 201. The first burner 101 is annular and has a first flame hole 113 formed on its inner periphery. The second burner 201 is annular and has a second flame hole 213 formed on its inner periphery. The second burner 201 is positioned above the first burner 101, and its inner diameter D2 is larger than the inner diameter D1 of the first burner.

[0184] The above-mentioned burner assembly 300, by arranging the second burner 201 above the first burner 101, and the inner diameter D2 of the second burner is larger than the inner diameter D1 of the first burner, when the first burner 101 is successfully ignited, the second burner 201 can be ignited from the inner periphery by drawing the flame upward, thereby ensuring the uniformity of the flame at the bottom of the pot, and the structure is simple, convenient and fast.

[0185] Specifically, in one embodiment, the first burner 101 may be an inner ring burner, which may be used to provide an inner ring flame to ensure flame intensity and heating uniformity in the middle of the pot bottom.

[0186] In detail, a plurality of first fire holes 113 are formed on the inner periphery of the first burner 101 to ensure that the plurality of first fire holes 113 form an inner ring fire outlet around the inner periphery, thereby providing an annular inner flame to ensure uniform heating of the middle part of the pot bottom.

[0187] In one embodiment, the second burner 201 may be an outer ring burner, which may be used to provide an outer ring flame to ensure flame intensity and heating uniformity at the edge of the pot bottom.

[0188] In detail, the inner periphery of the second burner 201 is formed with multiple second fire holes 213 to ensure that the multiple second fire holes 213 form an outer ring fire outlet around the inner periphery, thereby providing an annular outer flame to ensure uniform heating at the edge of the pot bottom.

[0189] The inner diameter D1 of the first burner may be the diameter of the inner circumference of the first burner 101 , so as to provide an inner ring flame with a diameter of D1 .

[0190] The inner diameter D2 of the second burner may be the diameter of the inner circumference of the second burner 201 , so as to provide an outer ring flame with a diameter of D2 .

[0191] It can be understood that the inner diameter D2 of the second burner is larger than the inner diameter D1 of the first burner to ensure that the first burner 101 and the second burner 201 provide inner ring flame and outer ring flame respectively, and cooperate with each other to ensure that the middle and edge positions of the bottom of the pot are heated evenly, so that the entire bottom of the pot is heated evenly, thereby ensuring the uniformity of the flame of the bottom of the pot.

[0192] In one embodiment, the burner assembly 300 may be provided with an ignition needle (not shown) between the first burner 101 and the second burner 201 for providing a discharge arc to ignite the gas at the first flame hole 113 to form an annular inner flame.

[0193] In addition, the annular inner flame generated by the first fire hole 113 can ignite the gas at the second fire hole 213 from the inner periphery by drawing the flame upward to form an annular outer flame, thereby ensuring the flame uniformity of the burner assembly 300, which is convenient, fast and efficient.

[0194] It is worth noting that the first burner 101 and the second burner 201 can be stably set at an appropriate distance to ensure that the air flows smoothly at the first fire hole 113 inside the burner assembly 300, thereby ensuring the normal operation of the first burner 101 and avoiding insufficient secondary air replenishment resulting in insufficient intensity (or extinction) of the inner ring flame, thereby ensuring the overall flame uniformity of the pot bottom.

[0195] In one embodiment, the burner assembly 300 can be used by the first burner 101 alone, can be used by the second burner 201 alone, or can be used by the first burner 101 and the second burner 201 in combination, which is not specifically limited herein.

[0196] In certain embodiments, the inner diameter D2 of the second burner is 1.2 to 2.5 times the inner diameter D1 of the first burner.

[0197] In this way, it is ensured that the flame generated by the burner assembly 300 can better cover the bottom of the pot, thereby improving cooking efficiency.

[0198] Specifically, in one embodiment, the inner diameter D1 of the first burner may be set to ensure that the annular flame generated by the first burner 101 can be better located in the middle of the pot bottom, so as to improve the flame intensity in the middle of the pot bottom and ensure that the middle of the pot bottom is heated evenly.

[0199] In one embodiment, the inner diameter D2 of the second burner is 1.2 to 2.5 times the inner diameter D1 of the first burner to ensure that the flame generated by the burner assembly 300 heats the bottom of the pot evenly, thereby improving gas utilization and cooking efficiency.

[0200] It can be understood that when the inner diameter of the first burner 101 is D1, the inner diameter D2 of the second burner can be in the range of (1.2D1, 2.5D1), so that the flame generated by the second burner 201 can better cover the edge of the bottom of the pot, thereby ensuring that the middle and edge of the bottom of the pot are evenly heated, thereby improving cooking efficiency.

[0201] That is, the inner diameter D2 of the second burner is in the range of 2.5D1>D2>1.2D1. In some examples, the inner diameter D2 of the second burner may be 1.3D1, 1.5D1, 1.6D1, 1.9D1, 2.0D1, 2.3D1, 2.4D1, or other values ​​between 1.2D1 and 2.5D1.

[0202] When the inner diameter D2 of the second burner is greater than 2.5D1, the inner diameter D2 of the second burner is too large, causing the outer ring flame generated by the second fire hole 213 to extend toward the outside of the pot bottom, resulting in a large distance between the outer ring flame and the inner ring flame at the bottom of the pot, insufficient heating, and reduced flame uniformity of the burner assembly 300.

[0203] In addition, the outward extension of gas reduces the gas utilization rate, and there is also a risk of high temperature of the pot handle causing burns to the user.

[0204] When the inner diameter D2 of the second burner is less than 1.2D1, the inner diameter D2 of the second burner is too small, so that the outer ring flame generated by the second fire hole 213 is close to the inner ring flame generated by the first fire hole 113, resulting in excessive heating of the middle part of the bottom of the pot and insufficient heating of the edge of the bottom of the pot, making the overall bottom of the pot heated unevenly, which is prone to safety risks.

[0205] In certain embodiments, the inner diameter D2 of the second burner is 1.5 times the inner diameter D1 of the first burner.

[0206] In this way, by adjusting the appropriate flame position, the heating area of ​​the pot bottom and the cooking efficiency can be further improved while ensuring that the flame covers the pot bottom well.

[0207] Specifically, in one embodiment, the inner diameter D2 of the second burner is 1.5 times the inner diameter D1 of the first burner, so that the inner ring flame generated by the first fire hole 113 and the outer ring flame generated by the second fire hole 213 are located at appropriate positions on the bottom of the pot, thereby better ensuring the heat supply and flame uniformity of the bottom of the pot.

[0208] It can be understood that the inner diameter D2 of the second burner can be D2=1.5D1, so that the outer ring flame generated by the second burner 201 can just wrap around the edge of the bottom of the pot while ensuring that the inner ring flame generated by the first burner 101 is located in the middle of the bottom of the pot, thereby improving the flame uniformity of the burner assembly 300, and further improving the gas utilization efficiency and cooking efficiency.

[0209] In one embodiment, for example, the inner diameter D1 of the first burner is 80 mm. From D2=1.5D1, it can be seen that the inner diameter D2 of the second burner is 120 mm, so as to ensure that the flame generated by the burner assembly 300 better covers the bottom of the pot, thereby ensuring the flame uniformity and flame intensity, so as to improve cooking efficiency and gas utilization.

[0210] In other embodiments, the inner diameter D1 of the first burner may also be other values, as long as D2=1.5D1 is ensured, and no specific limitation is made here.

[0211] Referring to FIG. 2 , in certain embodiments, the first burner 101 includes a first lower plate 122, a first upper plate 133 disposed on the first lower plate 122, and a first separator plate 143. The first lower plate 122 is formed with a first lower channel 125, and the first upper plate 133 is formed with a first upper channel 135 corresponding to the first lower channel 125. The first lower channel 125 and the first upper channel 135 form a first flame hole 113. The first separator plate 143 is disposed between the first lower plate 122 and the first upper plate 133 and separates the first lower channel 125 from the first upper channel 135. The depth direction of the first flame hole 113 forms an angle θ1 with the plane of the first upper plate 133, and the range of the θ1 angle is (0°, 90°).

[0212] In this way, the first fire hole 113 of the first burner 101 is tilted inwardly into a cone shape, thereby ensuring the flame concentration effect of the first burner 101 and further improving the flame intensity and heating efficiency of the first burner 101.

[0213] Specifically, in one embodiment, the range of the angle θ1 formed by the depth direction of the first fire hole 113 and the plane where the first upper plate 133 is located is (0°, 90°), so that the first fire hole 113 of the first burner 101 is tilted inward into a cone shape, thereby ensuring the flame concentration effect of the first burner 101, and then improving the flame intensity of the first burner 101 to ensure the heating rate of the bottom of the cooking utensil.

[0214] It can be understood that when the angle formed by the depth direction of the first fire hole 113 and the plane where the first upper plate 133 is located exceeds the range of (0°, 90°), the flame of the first burner 101 spreads along the periphery, resulting in poor flame gathering effect, which can easily cause the risk of burns to users or flameout.

[0215] In one embodiment, the angle θ1 is in the range of (0°, 90°), i.e., 0°<θ1<90°. In some examples, the angle θ1 can be 5°, 10°, 30°, 45°, 60°, 75°, 85°, or other values ​​between 0° and 90°.

[0216] In one embodiment, the first partition plate 143 is arranged between the first lower plate 122 and the first upper plate 133, and is used to separate the first fire hole 113 formed by the first lower channel 125 and the first upper channel 135 into two sub-fire holes, so that the sub-fire holes located on the upper and lower sides of the first partition plate 143 are independent of each other.

[0217] That is, the sub-flame hole has a smaller cross-sectional area and a deeper depth than the first flame hole 113. At the moment the gas valve closes, the flame's return path becomes longer. By the time the flame reaches the gas duct, it's no longer sufficient to reach the critical conditions for deflagration, effectively resolving the flameout noise issue of the first burner 101.

[0218] The first partition plate 143 is disposed between the first lower channel 125 and the first upper channel 135 , and thus the first partition plate 143 may be made of a high-temperature-resistant and corrosion-resistant material.

[0219] In one embodiment, the first partition plate 143 may be made of a stainless steel partition plate. In other embodiments, the first partition plate 143 may be made of an aluminum alloy partition plate, a copper alloy partition plate, or other materials, without limitation.

[0220] In certain embodiments, the angle θ1 is in the range of (0°, 60°).

[0221] In this way, the flame focusing capability of the first burner 101 is ensured, thereby improving the heating efficiency.

[0222] Specifically, in one embodiment, preferably, the angle θ1 formed by the depth direction of the first fire hole 113 and the plane where the first upper plate 133 is located is in the range of (0°, 60°), so that the first fire hole 113 of the first burner 101 is tilted inward into a cone shape, thereby ensuring that the flame formed by the first fire hole 113 of the first burner 101 better covers the bottom of the cooking utensil, thereby improving the heating rate of the first burner 101.

[0223] It can be understood that when the angle formed by the depth direction of the first fire hole 113 and the plane where the first upper plate 133 is located exceeds the range of (0°, 60°), the inclination angle of the flame of the first burner 101 increases, so that the focusing effect of the flame is weakened, thereby reducing the heating rate of the first burner 101.

[0224] In one embodiment, the angle θ1 is in the range of (0°, 60°), i.e., 0°<θ1<60°. In some examples, the angle θ1 can be 5°, 10°, 15°, 25°, 30°, 45°, 50°, or other values ​​between 0° and 60°.

[0225] In certain embodiments, the angle θ1 is 40°.

[0226] In this way, the flame intensity formed by the first burner 101 is ensured to be greater, so that the heating effect of the bottom of the cooking utensil is better.

[0227] Specifically, in one embodiment, preferably, the angle θ1 formed by the depth direction of the first fire hole 113 and the plane where the first upper plate 133 is located can be 40°. While ensuring that the first fire hole 113 of the first burner 101 is tilted inward into a cone shape, the flame is cohesive to cover the bottom of the heating cooking utensil, thereby ensuring a better heating effect on the bottom of the cooking utensil.

[0228] It can be understood that when the angle θ1 is 40°, the flame formed by the first burner 101 can better cover the bottom of the cooking utensil to ensure the heating effect of the bottom of the cooking utensil, thereby improving the gas utilization rate and further improving the flame intensity and heating rate of the first burner 101.

[0229] In certain embodiments, the second burner 201 includes a second lower plate 222, a second upper plate 233 disposed on the second lower plate 222, and a second separator plate 243. The second lower plate 222 is formed with a second lower channel 225, and the second upper plate 233 is formed with a second upper channel 235 corresponding to the second lower channel 225. The second lower channel 225 and the second upper channel 235 form a second flame hole 213. The second separator plate 243 is disposed between the second lower plate 222 and the second upper plate 233 and separates the second lower channel 225 from the second upper channel 235. The depth direction of the second flame hole 213 forms an angle θ2 with the plane of the second upper plate 233, and the range of the angle θ2 is (0°, 90°).

[0230] In this way, the second fire hole 213 of the second burner 201 is tilted inwardly into a cone shape, thereby ensuring the flame concentration effect of the second burner 201 and further improving the flame intensity and heating efficiency of the second burner 201.

[0231] Specifically, in one embodiment, the range of the angle θ2 formed by the depth direction of the second fire hole 213 and the plane where the second upper plate 233 is located is (0°, 90°), so that the second fire hole 213 of the second burner 201 is tilted inward into a cone shape, thereby ensuring the flame concentration effect of the second burner 201, and then improving the flame intensity of the second burner 201 to ensure the heating rate of the bottom of the cooking utensil.

[0232] It can be understood that when the angle formed by the depth direction of the second fire hole 213 and the plane where the second upper plate 233 is located exceeds the range of (0°, 90°), the flame of the second burner 201 spreads along the periphery, resulting in poor flame gathering effect, which can easily cause burns to users and flameout.

[0233] In one embodiment, the angle θ2 is in the range of (0°, 90°), i.e., 0°<θ2<90°. In some examples, the angle θ2 can be 5°, 10°, 30°, 45°, 60°, 75°, 85°, or other values ​​between 0° and 90°.

[0234] In one embodiment, the second partition plate 243 is arranged between the second lower plate 222 and the second upper plate 233, and is used to separate the second fire hole 213 formed by the second lower channel 225 and the second upper channel 235 into two sub-fire holes, so that the sub-fire holes located on the upper and lower sides of the second partition plate 243 are independent of each other.

[0235] That is, the sub-flame hole has a smaller cross-sectional area and a deeper depth than the second flame hole 213. At the moment the gas valve closes, the flame's return path becomes longer. By the time the flame reaches the gas channel, it's no longer sufficient to reach the critical conditions for deflagration, effectively resolving the flameout noise issue of the second burner 201.

[0236] The second partition plate 243 is disposed between the second lower channel 225 and the second upper channel 235 , and thus the second partition plate 243 may be made of a high-temperature-resistant and corrosion-resistant material.

[0237] In one embodiment, the second partition plate 243 may be made of a stainless steel partition plate. In other embodiments, the second partition plate 243 may be made of an aluminum alloy partition plate, a copper alloy partition plate, or other materials, without limitation.

[0238] In certain embodiments, the angle θ2 is in the range of (0°, 60°).

[0239] In this way, the flame focusing capability of the second burner 201 is ensured, thereby improving the heating efficiency.

[0240] Specifically, in one embodiment, preferably, the angle θ2 formed by the depth direction of the second fire hole 213 and the plane where the second upper plate 233 is located is in the range of (0°, 60°), so that the second fire hole 213 of the second burner 201 is tilted inward into a cone shape, thereby ensuring that the flame formed by the second fire hole 213 of the second burner 201 better covers the bottom of the cooking utensil, thereby improving the heating rate of the second burner 201.

[0241] It can be understood that when the angle formed by the depth direction of the second fire hole 213 and the plane where the second upper plate 233 is located exceeds the range of (0°, 60°), the inclination angle of the flame of the second burner 201 increases, so that the focusing effect of the flame is weakened, thereby reducing the heating rate of the second burner 201.

[0242] In one embodiment, the angle θ2 is in the range of (0°, 60°), i.e., 0°<θ2<60°. In some examples, the angle θ2 can be 5°, 10°, 15°, 25°, 30°, 45°, 50°, or other values ​​between 0° and 60°.

[0243] In certain embodiments, the angle θ2 is 40°.

[0244] In this way, the flame intensity formed by the second burner 201 is ensured to be greater, so that the heating effect of the bottom of the cooking utensil is better.

[0245] Specifically, in one embodiment, preferably, the angle θ2 formed by the depth direction of the second fire hole 213 and the plane where the second upper plate 233 is located can be 40°. While ensuring that the second fire hole 213 of the second burner 201 is tilted inward into a cone shape, the flame is cohesive to cover the bottom of the heating cooking utensil, thereby ensuring a better heating effect on the bottom of the cooking utensil.

[0246] It can be understood that when the angle θ2 is 40°, the flame formed by the second burner 201 can better cover the bottom of the cooking utensil to ensure the heating effect of the bottom of the cooking utensil, thereby improving the gas utilization rate and further improving the flame intensity and heating rate of the second burner 201.

[0247] Please refer to FIG. 1 . In some embodiments, there is a first height difference H1 between the first fire hole 113 and the second fire hole 213 . The range of the first height difference H1 is (15 mm, 40 mm).

[0248] This improves the ignition efficiency and heat dissipation efficiency of the burner assembly 300. When the first height difference H1 is greater than 40 mm, the first height difference H1 is too large, resulting in the first burner 101 and the second burner 201 being too far apart, making it difficult for the flame of the first burner 101 to assist in igniting the second burner 201. When the first height difference H1 is less than 15 mm, the first height difference H1 is too small, resulting in the first burner 101 and the second burner 201 being too close together, resulting in poor heat dissipation and excessive heat inside the burner assembly 300, which can easily create safety hazards.

[0249] Specifically, in one embodiment, the first height difference H1 should be selected to be a suitable distance to ensure normal operation and safe use of the first burner 101 and the second burner 201 .

[0250] In one embodiment, the first height difference H1 may be in the range of (15 mm, 40 mm) to ensure the heat dissipation efficiency and flame transfer efficiency of the burner assembly 300 , thereby improving the safety of the burner assembly 300 .

[0251] That is, the first height difference H1 may be in the range of (15 mm, 40 mm), i.e., 15 mm < H1 < 40 mm. In some examples, H1 may be 17 mm, 19 mm, 23 mm, 25 mm, 30 mm, 32 mm, 37 mm, or other values ​​between 15 mm and 40 mm.

[0252] When the first height difference H1 is greater than 40 mm, the first height difference H1 is too large, so that the distance between the first burner 101 and the second burner 201 is too far, and it is difficult to assist the ignition of the second burner 201 by the flame of the first burner 101, thereby reducing the ignition efficiency.

[0253] When the first height difference H1 is less than 15 mm, the first height difference H1 is too small, so that the distance between the first burner 101 and the second burner 201 is too close, the heat dissipation effect is poor, and the internal heat of the burner assembly 300 is too high, which easily creates a safety hazard.

[0254] In some embodiments, there is a first height difference H1 between the first fire hole 113 and the second fire hole 213 , and the first height difference H1 is in the range of (20 mm, 30 mm).

[0255] This further improves the ignition efficiency and heat dissipation efficiency of the burner assembly 300. When the first height difference H1 is greater than 30 mm, the first height difference H1 is large, resulting in a greater distance between the first burner 101 and the second burner 201, and the flame of the first burner 101 assisting the ignition of the second burner 201 is low. When the first height difference H1 is less than 20 mm, the first height difference H1 is small, resulting in a closer distance between the first burner 101 and the second burner 201, poor heat dissipation, and high internal heat in the burner assembly 300, which can easily create safety hazards.

[0256] Specifically, in one embodiment, the first height difference H1 should be selected to be a suitable distance to ensure normal operation and safe use of the first burner 101 and the second burner 201 .

[0257] In one embodiment, preferably, the first height difference H1 may be in the range of (20 mm, 30 mm) to further improve the heat dissipation efficiency and flame transfer efficiency of the burner assembly 300 .

[0258] That is, the first height difference H1 may be in the range of (20 mm, 30 mm), i.e., 20 mm < H1 < 30 mm. In some examples, H1 may be 21 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 29 mm, or other values ​​between 20 mm and 30 mm.

[0259] When the first height difference H1 is greater than 30 mm, the first height difference H1 is large, so that the distance between the first burner 101 and the second burner 201 is large, and the ignition efficiency of the second burner 201 assisted by the flame of the first burner 101 is low.

[0260] When the first height difference H1 is less than 20 mm, the first height difference H1 is small, so that the distance between the first burner 101 and the second burner 201 is close, the heat dissipation effect is poor, and the internal heat of the burner assembly 300 is high, which is prone to safety hazards.

[0261] In some embodiments, there is a first height difference H1 between the first fire hole 113 and the second fire hole 213 , and the first height difference H1 is 23.65 mm.

[0262] In this way, the ignition efficiency and heat dissipation efficiency of the burner assembly 300 are higher, thereby ensuring the safety of the burner assembly 300.

[0263] Specifically, in one embodiment, preferably, the first height difference H1 can be 23.65 mm, that is, the distance between the first fire hole 113 and the second fire hole 213 is 23.65 mm. While ensuring that there is a suitable heat dissipation space between the first burner 101 and the second burner 201, the first fire hole 113 can quickly assist the ignition of the second fire hole 213 by drawing the flame upward, thereby improving the ignition efficiency and heat dissipation efficiency of the burner assembly 300.

[0264] It can be understood that when the first height difference H1 is 23.65 mm, the flame generated by the first burner 101 is transmitted from the first fire hole 113 to the second fire hole 213 (from bottom to top), which can better ignite the gas at the second fire hole 213 from the inner periphery of the second burner 201 to form a double-ring flame to cover the bottom of the pot, thereby improving the ignition efficiency.

[0265] In addition, when the first height difference H1 is 23.65 mm, the heat dissipation space between the first burner 101 and the second burner 201 is appropriate, which can ensure that the air flows smoothly in the burner assembly 300, that is, the internal heat of the burner assembly 300 can be removed by air cooling, thereby improving the heat dissipation efficiency and ensuring the safe operation of the burner assembly 300.

[0266] Please refer to FIG. 3 . In some embodiments, the depth direction of the first fire hole 113 is inclined relative to the radial direction of the first burner 101 to form a first deflection angle E. The range of the first deflection angle E is (0, 45°).

[0267] In this way, the flame of the first fire hole 113 is gathered in a spiral shape to increase the flame intensity and ensure the combustion efficiency of the gas.

[0268] Specifically, in one embodiment, the first deflection angle E can be the angle formed by the radial inclination of the depth direction of the first fire hole 113 relative to the inner periphery of the first burner 101, which can be used to adjust the diameter of the annular flame to meet the heating requirements of the middle part of the pot bottom.

[0269] It can be understood that the first deflection angle E should be selected at a suitable angle so that the first fire hole 113 forms a ring flame of suitable diameter, thereby improving the combustion efficiency of the gas, increasing the flame intensity, and ensuring the heating amount of the middle part of the pot bottom.

[0270] In one embodiment, the first deflection angle E may be in the range of (0, 45°), i.e., 0<E<45°. In some examples, E may be 5°, 8°, 10°, 25°, 30°, 35°, 40°, or other values ​​between 0 and 45°.

[0271] When the first deflection angle E is greater than 45°, the first deflection angle E is too large, so that the diameter of the annular flame formed by the first fire hole 113 is too large, causing the flame to be relatively close to the edge of the bottom of the pot, thereby reducing the amount of heat in the middle of the bottom of the pot. Relatively speaking, the amount of heat at the edge of the bottom of the pot is increased, resulting in poor heating uniformity of the burner assembly 300 and reduced combustion efficiency of the gas.

[0272] In some embodiments, the depth direction of the first fire hole 113 is inclined relative to the radial direction of the first burner 101 to form a first deflection angle E, and the range of the first deflection angle E is (0, 30°).

[0273] In this way, while ensuring the concentration of the flame of the first fire hole 113, the flame intensity and heating effect are further improved.

[0274] Specifically, it can be understood that the smaller the first deflection angle E is, the more the first deflection angle E tends to overlap with the radial direction of the first burner 101, so that the heating area of ​​the flame formed by the first fire hole 113 is smaller and tends to gather in the middle position of the bottom of the pot.

[0275] In one embodiment, the first deflection angle E should be selected to be a suitable angle so that the first fire hole 113 forms a ring flame of a suitable diameter to cover the middle of the bottom of the heating pot, thereby further improving the flame intensity and heating effect.

[0276] In one embodiment, preferably, the first deflection angle E may be in the range of (0, 30°), i.e., 0<E<30°. In some examples, E may be 3°, 5°, 8°, 10°, 15°, 25°, 27°, or other values ​​between 0 and 30°.

[0277] When the first deflection angle E is greater than 30°, the first deflection angle E is larger, so that the diameter of the annular flame formed by the first fire hole 113 is larger, causing the flame to be relatively close to the edge of the bottom of the pot, thereby reducing the amount of heating in the middle of the bottom of the pot. Relatively speaking, the amount of heating at the edge of the bottom of the pot is increased, resulting in poor heating uniformity of the burner assembly 300 and reduced combustion efficiency of the gas.

[0278] In some embodiments, the depth direction of the first fire hole 113 is inclined relative to the radial direction of the first burner 101 to form a first deflection angle E, and the first deflection angle E is 30°.

[0279] In this way, the flame intensity and heating efficiency are high while ensuring the concentration of the flame of the first fire hole 113.

[0280] Specifically, in one embodiment, preferably, the first deflection angle E can be 30°, that is, the depth direction of the first fire hole 113 is inclined at a radial angle of 30° relative to the first burner 101. While ensuring that the flame generated by the first burner 101 is spirally concentrated, the heating area of ​​the flame formed by the first fire hole 113 is more appropriate, thereby making the flame intensity and heating effect of the first burner 101 higher.

[0281] It can be understood that when the first deflection angle E is 30°, the flame formed by the first fire hole 113 is distributed in a ring shape, which can better cover the middle part of the bottom of the pot (target heating area), so that the heating efficiency is higher.

[0282] In addition, when the first deflection angle E is 30°, the depth direction of the first fire hole 113 is tilted relative to the radial direction of the first burner 101, which can ensure that the flame formed by the first fire hole 113 is at an appropriate distance from the middle of the pot bottom, thereby making the flame intensity greater.

[0283] In one embodiment, when the first deflection angle E is 30°, the flame formed by the first fire hole 113 spirals upward, so that the flames overlap and gather in the middle of the pot bottom, ensuring a high flame intensity.

[0284] Please refer to FIG. 4 . In some embodiments, the depth direction of the second fire hole 213 is inclined relative to the radial direction of the second burner 201 to form a second deflection angle F. The range of the second deflection angle F is (0, 45°).

[0285] In this way, the flame of the second fire hole 213 is gathered in a spiral shape to increase the flame intensity and ensure the combustion efficiency of the gas.

[0286] Specifically, in one embodiment, the second deflection angle F can be the angle formed by the radial inclination of the depth direction of the second fire hole 213 relative to the inner periphery of the second burner 201, which can be used to adjust the diameter of the outer ring flame to meet the heating requirements of the edge position of the pot bottom.

[0287] It can be understood that the second deflection angle F should be selected at a suitable angle so that the second fire hole 213 forms an outer ring flame of suitable diameter, thereby improving the combustion efficiency of the gas, increasing the flame intensity, and ensuring the heating amount at the edge of the pot bottom.

[0288] In one embodiment, the second deflection angle F may be in the range of (0, 45°), i.e., 0<F<45°. In some examples, F may be 5°, 8°, 10°, 25°, 30°, 35°, 40°, or other values ​​between 0 and 45°.

[0289] When the second deflection angle F is greater than 45°, the second deflection angle F is too large, so that the diameter of the outer ring flame formed by the second fire hole 213 is too large, causing the outer ring flame to extend to the outside of the pot bottom, thereby reducing the heating amount at the edge of the pot bottom, resulting in poor heating uniformity of the burner assembly 300 and reduced combustion efficiency of the gas.

[0290] In some embodiments, the depth direction of the second fire hole 213 is inclined relative to the radial direction of the second burner 201 to form a second deflection angle F, and the range of the second deflection angle F is (0, 30°).

[0291] In this way, while ensuring the concentration of the flame of the second fire hole 213, the flame intensity and heating effect are further improved.

[0292] Specifically, it can be understood that the smaller the second deflection angle F is, the more the second deflection angle F tends to overlap with the radial direction of the second burner 201, so that the heating area of ​​the flame formed by the second fire hole 213 is smaller and tends to gather at the edge of the bottom of the pot and inside it.

[0293] In one embodiment, the second deflection angle F should be selected to be a suitable angle so that the second fire hole 213 forms an outer ring flame of a suitable diameter to cover the edge of the heating pot bottom, thereby further improving the flame intensity and heating effect.

[0294] In one embodiment, preferably, the second deflection angle F may be in the range of (0, 30°), i.e., 0<F<30°. In some examples, F may be 3°, 5°, 8°, 10°, 15°, 25°, 27°, or other values ​​between 0 and 30°.

[0295] When the second deflection angle F is greater than 30°, the second deflection angle F is larger, so that the diameter of the outer ring flame formed by the second fire hole 213 is larger, causing the outer ring flame to extend toward the outside of the pot bottom, thereby reducing the amount of heating at the edge of the pot bottom, resulting in poor heating uniformity of the burner assembly 300 and reduced combustion efficiency of the gas.

[0296] In some embodiments, the depth direction of the second fire hole 213 is inclined relative to the radial direction of the second burner 201 to form a second deflection angle F, and the second deflection angle F is 30°.

[0297] In this way, the flame intensity and heating efficiency are high while ensuring the concentration of the flame of the second fire hole 213.

[0298] Specifically, in one embodiment, preferably, the second deflection angle F can be 30°, that is, the depth direction of the second fire hole 213 is 30° with respect to the radial inclination angle of the second burner 201. While ensuring that the flame generated by the second burner 201 is spirally concentrated, the heating area of ​​the flame formed by the second fire hole 213 is more appropriate, thereby making the flame intensity and heating effect of the second burner 201 higher.

[0299] It can be understood that when the second deflection angle F is 30°, the flame formed by the second fire hole 213 is distributed in a ring shape, which can better cover the edge position of the bottom of the pot (target heating area), so that the heating efficiency is higher.

[0300] In addition, when the second deflection angle F is 30°, the depth direction of the second fire hole 213 is tilted relative to the radial direction of the first burner 101, which can ensure that the flame formed by the second fire hole 213 is at an appropriate distance from the edge of the pot bottom, thereby making the flame intensity greater.

[0301] In one embodiment, when the second deflection angle F is 30°, the flame formed by the second fire hole 213 spirals upward, so that the flames overlap and gather at the edge of the pot bottom, ensuring a high flame intensity.

[0302] Please refer to Figure 5. In some embodiments, the burner assembly 300 includes a guide plate 50, which is arranged between the first burner 101 and the second burner 201. There is a second height difference H2 between the guide plate 50 and the top of the first fire hole 113, and there is a third height difference H3 between the guide plate 50 and the bottom of the second fire hole 213. The third height difference H3 is greater than the second height difference H2.

[0303] In this way, the first burner 101 and the second burner 201 are respectively kept at an appropriate distance from the guide plate 50 to improve the air flow inside the burner assembly 300, thereby improving the combustion efficiency of the burner assembly 300.

[0304] Specifically, in one embodiment, the guide plate 50 is arranged in a funnel shape between the first burner 101 and the second burner 201, and the end with a larger opening is arranged near the bottom of the second fire hole 213, and the end with a smaller opening is arranged near the top of the first fire hole 113, so as to increase the space between the first burner 101 and the second burner 201, ensure the supply of secondary air, and thus improve the combustion efficiency of the burner assembly 300.

[0305] In one embodiment, the second height difference H2 may be the distance between the guide plate 50 and the top of the first fire hole 113 . The smaller the second height difference H2 is, the faster the secondary air reaches the first fire hole 113 , thereby ensuring the combustion efficiency of the first burner 101 .

[0306] In one embodiment, the third height difference H3 may be the distance between the guide plate 50 and the bottom of the second fire hole 213 to ensure that the secondary air quickly flows into the interior of the burner assembly 300 , thereby improving the combustion efficiency of the burner assembly 300 .

[0307] It can be understood that the third height difference H3 is greater than the second height difference H2, ensuring that the distance between the guide plate 50 and the bottom of the second fire hole 213 is larger, so that the secondary air can enter the burner assembly 300 faster and provide sufficient secondary air for the burner assembly 300.

[0308] In addition, the third height difference H3 is greater than the second height difference H2, ensuring that the distance between the guide plate 50 and the top of the first fire hole 113 is small, so that the secondary air inside the burner assembly 300 is transported over a shorter distance and at a faster speed, thereby improving the combustion efficiency of the burner assembly 300.

[0309] It is worth noting that the guide plate 50 is funnel-shaped and arranged between the first burner 101 and the second burner 201. It can also be used to direct the oil droplets generated during the cooking process along the side wall of the guide plate 50 into the oil cup (not shown) to improve the cleanliness of the burner assembly 300.

[0310] In some embodiments, the second height difference H2 is in the range of (0, 8 mm).

[0311] In this way, a suitable distance is maintained between the top of the first burner 101 and the guide plate 50 to improve the supply of secondary air, thereby improving the combustion efficiency of the first burner 101 .

[0312] Specifically, in one embodiment, the second height difference H2 should be selected to have a suitable distance to ensure the supply speed of the secondary air of the first fire hole 113 , thereby improving the combustion efficiency of the first burner 101 .

[0313] In one embodiment, the second height difference H2 may be in the range of (0, 8 mm) to provide sufficient secondary air in a timely manner to ensure that the gas at the first fire hole 113 is fully burned, thereby improving the combustion efficiency of the first burner 101 .

[0314] That is, the second height difference H2 may be in the range of (0, 8 mm), that is, 0<H2<8 mm. In some examples, H2 may be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, or other values ​​between 0 and 8 mm.

[0315] When the second height difference H2 is greater than 8 mm, the second height difference H2 is too large, so that the time for the secondary air to reach the first flame hole 113 is too long, thereby reducing the combustion efficiency of the first burner 101 and causing low flame uniformity.

[0316] In certain embodiments, the second height difference H2 is 5 mm.

[0317] In this way, while ensuring that there is an appropriate distance between the top of the first burner 101 and the guide plate 50, the supply of secondary air is sufficient, thereby making the combustion efficiency of the first burner 101 higher.

[0318] Specifically, in one embodiment, preferably, the second height difference H2 can be 5 mm, that is, the distance between the top of the first fire hole 113 and the guide plate 50 is 5 mm. While ensuring that there is an appropriate distance between the top of the first burner 101 and the guide plate 50, the secondary air can quickly reach the first fire hole 113, thereby making the combustion efficiency of the first burner 101 higher.

[0319] It can be understood that when the second height difference H2 is 5 mm, the gas at the first fire hole 113 can be fully burned by the secondary air, thereby making the combustion efficiency of the first burner 101 higher and further improving the flame intensity.

[0320] In addition, when the second height difference H2 is 5 mm, the distance between the first burner 101 and the guide plate 50 is large, and the heat dissipation efficiency is high, thereby ensuring the safe operation of the burner assembly 300.

[0321] In some embodiments, the third height difference H3 is in the range of (0, 15 mm).

[0322] In this way, the bottom of the second burner 201 is kept at an appropriate distance from the guide plate 50 to improve the supply of secondary air, thereby improving the combustion efficiency and ensuring the flame uniformity of the burner assembly 300.

[0323] Specifically, in one embodiment, the third height difference H3 should be selected to have a suitable distance so that sufficient secondary air can be introduced into the burner assembly 300 while ensuring full combustion of the gas in the second fire hole 213 , thereby ensuring flame uniformity of the burner assembly 300 .

[0324] In one embodiment, the third height difference H3 may be in the range of (0, 15 mm), i.e., 0<H3<15 mm. In some examples, H3 may be 1 mm, 3 mm, 4 mm, 7 mm, 9 mm, 10 mm, 13 mm, or other values ​​between 0 and 15 mm.

[0325] When the third height difference H3 is greater than 15 mm, the third height difference H3 is too large, so that the distance between the guide plate 50 and the second fire hole 213 is too large, the stability is reduced, and it is difficult to fix.

[0326] In addition, the third height difference H3 is too large, which makes the burner assembly 300 larger and occupies a larger space.

[0327] In certain embodiments, the third height difference H3 is 9 mm.

[0328] In this way, while ensuring that there is an appropriate distance between the bottom of the second burner 201 and the guide plate 50, the supply of secondary air is sufficient, so that the combustion efficiency of the burner assembly 300 is higher and the flame uniformity is better.

[0329] Specifically, in one embodiment, preferably, the third height difference H3 can be 9 mm, that is, the distance between the bottom of the second fire hole 213 and the guide plate 50 is 9 mm. While ensuring that the gas in the second fire hole 213 is fully burned, sufficient secondary air is allowed to enter the burner assembly 300, thereby making the combustion efficiency of the first burner 101 higher, thereby ensuring that the flame uniformity of the burner assembly 300 is better.

[0330] It can be understood that when the third height difference H3 is 9 mm, the gas at the second fire hole 213 can be fully burned by the secondary air, thereby making the combustion efficiency of the second burner 201 higher and further improving the flame intensity.

[0331] Furthermore, when the third height difference H3 is 9 mm, sufficient secondary air can quickly enter the burner assembly 300 through the third height difference H3, accelerating air flow and heat dissipation. Simultaneously, sufficient secondary air can also flow along the sidewalls of the guide plate 50 to the first flame holes 113, ensuring sufficient combustion of the gas in the first flame holes 113. This ensures high combustion efficiency and flame uniformity in the burner assembly 300.

[0332] Please refer to Figures 1 and 2. In some embodiments, the first lower plate 122 is concave to form a first lower channel 125, and the first upper plate 133 is convex to form a first upper channel 135. The first lower channel 125 and the first upper channel 135 are opposite to each other to form the first fire hole 113 of the first burner 101.

[0333] In this way, the first upper channel 135 of the first upper plate 133 and the first lower channel 125 of the first lower plate 122 are arranged opposite to each other, so that the first fire hole 113 of the first burner 101 is formed opposite to each other, thereby increasing the total area of ​​the fire holes of the first burner 101, and further increasing the flame intensity and load upper limit of the first burner 101.

[0334] Specifically, the first lower plate 122 may be used to form the first fire hole 113 , and thus the first lower plate 122 may be made of a high-temperature-resistant and corrosion-resistant material.

[0335] In one embodiment, the first lower plate 122 can be made of aluminum alloy to ensure the bending performance of the first lower plate 122, thereby ensuring the formation of the first lower channel 125. In other embodiments, the first lower plate 122 can also be made of other materials, which are not specifically limited here.

[0336] Similarly, the first upper plate 133 can be used to form the first fire hole 113 with the first lower plate 122 , so the first upper plate 133 can be made of a high temperature resistant and corrosion resistant material.

[0337] In one embodiment, the first upper plate 133 can be made of the same material as the first lower plate 122 to ensure the bending performance of the first upper plate 133, thereby ensuring the formation of the first upper channel 135. In other embodiments, the first upper plate 133 can also be made of other materials, which are not specifically limited here.

[0338] It can be understood that the first lower channel 125 and the first upper channel 135 are formed in a diametrically opposed manner to form a ring-shaped first flame hole 113. Compared to a single first lower channel 125 or a single first upper channel 135 arranged in a staggered manner, the total area of ​​the first flame hole 113 is increased, thereby increasing the combustion volume of the gas and thus improving the flame intensity of the first burner 101.

[0339] In addition, compared with the burner without the first partition plate 143, the equivalent cross-sectional area of ​​the first fire hole 113 of the present application does not change, which can ensure that the first burner 101 has a larger flame and at the same time has excellent fire transfer and flame stabilization effects.

[0340] In some embodiments, the second lower plate 222 is concave to form a second lower channel 225 , and the second upper plate 233 is convex to form a second upper channel 235 . The second lower channel 225 and the second upper channel 235 face each other to form the second fire hole 213 of the second burner 201 .

[0341] In this way, the second upper channel 235 of the second upper plate 233 and the second lower channel 225 of the second lower plate 222 are arranged opposite to each other, so that the second fire hole 213 of the second burner 201 is formed opposite to each other, thereby increasing the total area of ​​the fire holes of the second burner 201, and further increasing the flame intensity and load upper limit of the second burner 201.

[0342] Specifically, the second lower plate 222 can be used to form the second fire hole 213 , so the second lower plate 222 can be made of a high-temperature resistant and corrosion-resistant material.

[0343] In one embodiment, the second lower plate 222 can be made of aluminum alloy to ensure the bending performance of the second lower plate 222, thereby ensuring the formation of the second lower channel 225. In other embodiments, the second lower plate 222 can also be made of other materials, which are not specifically limited here.

[0344] Similarly, the second upper plate 233 can be used to form the second fire hole 213 with the second lower plate 222, so the second upper plate 233 can be made of a high temperature resistant and corrosion resistant material.

[0345] In one embodiment, the second upper plate 233 can be made of the same material as the second lower plate 222 to ensure the bending performance of the second upper plate 233, thereby ensuring the formation of the second upper channel 235. In other embodiments, the second upper plate 233 can also be made of other materials, which are not specifically limited here.

[0346] It is understood that the second lower channel 225 and the second upper channel 235 are formed opposite each other to form a circular-shaped second flame hole 213. Compared to a single second lower channel 225 or a single second upper channel 235 arranged in a staggered manner, the total area of ​​the second flame hole 213 is increased, thereby increasing the combustion volume of the gas and thus improving the flame intensity of the second burner 201.

[0347] In addition, compared with the burner without the second partition plate 243, the equivalent cross-sectional area of ​​the second fire hole 213 of the present application does not change, which can ensure that the second burner 201 has a larger flame and at the same time has excellent fire transfer and flame stabilization effects.

[0348] In some embodiments, a first fire transfer gap 155 is formed between the first upper plate 133 and the first partition plate 143 , and the first fire transfer gap 155 communicates with two adjacent first fire holes 113 .

[0349] In this way, two adjacent independent first flame holes 113 are connected together, thereby ensuring the formation of an integral flame, thereby improving the flame transfer capability and flameout resistance of the first burner 101 .

[0350] Specifically, in one embodiment, the first flame transfer gap 155 is formed between the first upper plate 133 and the first partition plate 143 to ensure that a connectable gap is formed between two adjacent first upper channels 135 in the first upper plate 133 to transfer and stabilize the flame.

[0351] It can be understood that during the ignition process of the first burner 101, the discharge arc can ignite the gas at the outlet of one of the first upper channels 135 through the ignition needle (not shown in the figure), and transfer the flame to the two adjacent first upper channels 135 through the first fire transfer gap 155, thereby forming a continuous flame, thereby ensuring the fire transfer efficiency and ignition success rate.

[0352] During the continuous operation of the first burner 101, the first fire transfer gap 155 connects the two adjacent first upper channels 135 and continuously replenishes secondary air to ensure that the gas in the two adjacent first upper channels 135 is fully burned, so that the first burner 101 forms an overall continuous flame, thereby ensuring high flame intensity and good stability, thereby improving the anti-fire ability of the first burner 101 and achieving the purpose of flame stabilization.

[0353] In one embodiment, the first flame transfer gap 155 may be in the range of [0.50 mm, 0.80 mm], so that two adjacent independent first upper channels 135 are connected together to ensure the flame transfer capability and flame stabilization capability of the first burner 101 .

[0354] That is, the first ignition gap 155 ranges from 0.50 mm to 0.80 mm. In some examples, the first ignition gap 155 can be 0.50 mm, 0.57 mm, 0.62 mm, 0.68 mm, 0.70 mm, 0.71 mm, 0.80 mm, or other values ​​between 0.50 mm and 0.80 mm.

[0355] When the first flame transfer gap 155 is less than 0.50 mm, the first flame transfer gap 155 is too small, the flame transfer efficiency and the secondary air supply efficiency are low, and the flame transfer ability of the first burner 101 is poor.

[0356] When the first flame transmission gap 155 is larger than 0.80 mm, the first flame transmission gap 155 is too large, the flame stability is low, and the flameout resistance of the first burner 101 is poor, which easily causes flameout and extinguishing.

[0357] In some embodiments, a second fire transmission gap 255 is formed between the second upper plate 233 and the second partition plate 243 , and the second fire transmission gap 255 communicates with two adjacent second fire holes 213 .

[0358] In this way, two adjacent independent second flame holes 213 are connected together, thereby ensuring the formation of an integral flame, thereby improving the flame transfer capability and flameout resistance of the second burner 201 .

[0359] Specifically, in one embodiment, the second flame transfer gap 255 is formed between the second upper plate 233 and the second partition plate 243 to ensure that a connectable gap is formed between two adjacent second upper channels 235 in the second upper plate 233 to play the role of transmitting and stabilizing the flame.

[0360] It can be understood that the second burner 201 can be ignited by the flame generated by the first burner 101 to ignite the gas at the second fire hole 213, and transfer the flame to the two adjacent second upper channels 235 through the second fire transfer gap 255, thereby forming a continuous flame, thereby ensuring the fire transfer efficiency and ignition success rate.

[0361] During the continuous operation of the second burner 201, the second fire transfer gap 255 connects the two adjacent second upper channels 235 and continuously replenishes secondary air to ensure that the gas in the two adjacent second upper channels 235 is fully burned, so that the second burner 201 forms an overall continuous flame, thereby ensuring high flame intensity and good stability, thereby improving the anti-fire resistance of the second burner 201 and achieving the purpose of flame stabilization.

[0362] In one embodiment, the second flame transfer gap 255 may be in the range of [0.50 mm, 0.80 mm], so that two adjacent independent second upper channels 235 are connected together to ensure the flame transfer capability and flame stabilization capability of the second burner 201 .

[0363] That is, the second ignition gap 255 ranges from 0.50 mm to 0.80 mm. In some examples, the second ignition gap 255 can be 0.50 mm, 0.57 mm, 0.62 mm, 0.68 mm, 0.70 mm, 0.71 mm, 0.80 mm, or other values ​​between 0.50 mm and 0.80 mm.

[0364] When the second flame transfer gap 255 is less than 0.50 mm, the second flame transfer gap 255 is too small, the flame transfer efficiency and the secondary air supply efficiency are low, and the flame transfer ability of the second burner 201 is poor.

[0365] When the second flame transmission gap 255 is larger than 0.80 mm, the second flame transmission gap 255 is too large, the flame stability is low, and the flameout resistance of the second burner 201 is poor, which easily causes flameout and extinguishing.

[0366] In some embodiments, as shown in FIG8 , the burner assembly 300 further includes an ignition module 501. The ignition module 501 includes an ignition needle 503, a thermocouple 504, and a first bracket 505. The ignition needle 503 and the thermocouple 504 are fixed to the first bracket 505. The ignition module 501 is configured such that the ignition needle 503 is positioned adjacent to the first flame hole 113.

[0367] The burner assembly 300 and the ignition module 501 integrate the ignition needle 503 and the thermocouple 504 into one, so that the ignition needle 503 is close to the first fire hole 113 and is located inside the burner assembly 300, thereby improving the ignition success rate of the first burner 101 and the second burner 201, and easy to install.

[0368] In some embodiments, each of the first burner 101 and the second burner 201 includes a burner body and a guide plate 50 .

[0369] Please refer to Figure 20. A gas channel 30h is formed inside the burner body, and an inner ring fire hole 30a and an outer ring fire hole 30f are provided which are respectively connected to the gas channel 30h. The outer ring fire hole 30f is arranged on the outside of the inner ring fire hole 30a. The burner body also forms an air supply channel 30c which is independent of the gas channel 30h. The air supply channel 30c includes an air inlet 30d located on the outer side wall of the burner body and an air outlet 30k located between the inner ring fire hole 30a and the outer ring fire hole 30f.

[0370] 21 , the guide plate 50 is provided at the air outlet 30k and cooperates with the inner wall of the air supply channel 30c to define an inner ring air supply port 30i and an outer ring air supply port 30j facing the inner ring fire hole 30a and the outer ring fire hole 30f respectively.

[0371] Referring to FIG. 6 , an embodiment of the present invention provides a stove 1000 , which includes the burner assembly 300 of any one of the above embodiments.

[0372] In this way, the stove 1000 sets the second burner 201 above the first burner 101, and the inner diameter D2 of the second burner is larger than the inner diameter D1 of the first burner. When the first burner 101 is successfully ignited, the second burner 201 can be ignited from the inner periphery by drawing the flame upward, thereby ensuring the uniformity of the flame at the bottom of the pot. The structure is simple and convenient.

[0373] Specifically, in one embodiment, the stove 1000 may be a natural gas stove, a liquefied gas stove, or a coal gas stove.

[0374] It is understood that the cooker 1000 includes a burner assembly 300, and the burner assembly 300 includes at least one burner, such as a single inner ring burner, a single outer ring burner, a double-ring inner flame burner, or a multi-ring inner flame burner.

[0375] In one embodiment, the cooktop 1000 includes a burner head 200 , which includes a burner assembly 300 , and the burner assembly 300 includes at least one burner.

[0376] In one embodiment, the stove 1000 may be a single-burner stove, a double-burner stove, or a multi-burner stove.

[0377] As shown in FIG6 , FIG6 is a schematic structural diagram of a dual-burner stove, that is, the burner 200 includes a burner assembly 300. The burner assembly 300 can be an outer ring burner, an inner ring burner, or a double ring burner formed by combining an outer ring burner and an inner ring burner, without specific limitation herein.

[0378] In addition, in the related art, the ignition needle and the thermocouple are separately arranged on the inner and outer sides of the burner, which makes the installation complicated and the ignition success rate low.

[0379] In view of this, embodiments of the present invention provide a burner assembly 300 and a stove 1000, which can improve the ignition success rate of the first burner and the second burner and are easy to install. The burner assembly 300 and the stove 1000 according to embodiments of the present invention are described in detail below with reference to Figures 7-15.

[0380] Referring to Figures 7 to 9, a burner assembly 300 provided in an embodiment of the present invention includes a first burner 101, a second burner 201, and an ignition module 501. The first burner 101 is annular and has a first fire hole 113 formed on the inner periphery. The second burner 201 is annular and has a second fire hole 213 formed on the inner periphery. The second burner 201 is arranged above the first burner 101, and the inner diameter D2 of the second burner is larger than the inner diameter D1 of the first burner. The ignition module 501 includes an ignition needle 503, a thermocouple 504, and a first bracket 505. The ignition needle 503 and the thermocouple 504 are fixed to the first bracket 505. The ignition module 501 is configured so that the ignition needle 503 is arranged close to the first fire hole 113.

[0381] The burner assembly 300 and the ignition module 501 integrate the ignition needle 503 and the thermocouple 504 into one, so that the ignition needle 503 is close to the first fire hole 113 and is located inside the burner assembly 300, thereby improving the ignition success rate of the first burner 101 and the second burner 201, and easy to install.

[0382] Specifically, in one embodiment, the first burner 101 may be an inner ring burner, which may be used to provide an inner ring flame to ensure flame intensity and heating uniformity in the middle of the pot bottom.

[0383] In detail, a plurality of first fire holes 113 are formed on the inner periphery of the first burner 101 to ensure that the plurality of first fire holes 113 form an inner ring fire outlet around the inner periphery, thereby providing an annular inner flame to ensure uniform heating of the middle part of the pot bottom.

[0384] In one embodiment, the second burner 201 may be an outer ring burner, which may be used to provide an outer ring flame to ensure flame intensity and heating uniformity at the edge of the pot bottom.

[0385] In detail, the inner periphery of the second burner 201 is formed with multiple second fire holes 213 to ensure that the multiple second fire holes 213 form an outer ring fire outlet around the inner periphery, thereby providing an annular outer flame to ensure uniform heating at the edge of the pot bottom.

[0386] The inner diameter D1 of the first burner may be the diameter of the inner circumference of the first burner 101 , so as to provide an inner ring flame with a diameter of D1 .

[0387] The inner diameter D2 of the second burner may be the diameter of the inner circumference of the second burner 201 , so as to provide an outer ring flame with a diameter of D2 .

[0388] It can be understood that the inner diameter D2 of the second burner is larger than the inner diameter D1 of the first burner to ensure that the first burner 101 and the second burner 201 provide inner ring flame and outer ring flame respectively, and cooperate with each other to ensure that the middle and edge positions of the bottom of the pot are heated evenly, so that the entire bottom of the pot is heated evenly, thereby ensuring the uniformity of the flame of the bottom of the pot.

[0389] In one embodiment, the ignition module 501 may be used to provide a discharge arc to ensure normal ignition of the burner assembly 300 , and may also be used to detect changes in thermoelectric potential to ensure safe use of the burner assembly 300 .

[0390] Specifically, the ignition pin 503 is mounted on the first bracket 505 and positioned near the first flame hole 113. It provides a discharge arc to ignite the gas at the first flame hole 113, forming an inner ring flame. Simultaneously, the upward combustion of the inner ring flame ignites combustion at the second flame hole 213, ensuring efficient, convenient, and quick ignition of the burner assembly 300.

[0391] Similarly, the thermocouple 504 is spaced apart from the ignition needle 503 and fixed on the first bracket 505 to contact and detect the flame generated by the first flame hole 113 .

[0392] It is understood that the thermocouple 504 is equivalent to a sensor that can control the on / off of the gas path. When the flame is accidentally extinguished due to reasons such as boiling porridge or boiling water overflow, the thermocouple 504 can automatically cut off the gas source, thereby preventing gas leakage and playing a flameout protection role.

[0393] Specifically, the ignition needle 503 is positioned near the first flame hole 113 and within the burner assembly 300, providing a discharge arc to ignite the gas at the first flame hole 113, forming an annular inner flame. Simultaneously, the annular inner flame generated by the first flame hole 113 can ignite the gas at the second flame hole 213 from the inner periphery by upwardly drawing the flame upward, forming an annular outer flame. This ensures flame uniformity within the burner assembly 300, providing a convenient and efficient ignition experience.

[0394] In one embodiment, the ignition module 501 is disposed inside the burner assembly 300 , which can reduce collisions and accidental damage caused by water overflowing from the bottom of the pot, allowing the ignition module 501 to ignite normally, thereby improving the ignition success rate of the ignition module 501 .

[0395] In addition, the ignition needle 503 and the thermocouple 504 are integrated on the ignition module 501, which can ensure efficient ignition of the burner assembly 300, occupy a small space, and is easy to install.

[0396] It is worth noting that the first burner 101 and the second burner 201 can be stably set at an appropriate distance to ensure that the air flows smoothly at the first fire hole 113 inside the burner assembly 300, thereby ensuring the normal operation of the first burner 101 and avoiding insufficient secondary air replenishment resulting in insufficient intensity (or extinction) of the inner ring flame, thereby ensuring the overall flame uniformity of the pot bottom.

[0397] Referring to FIG. 7 , in some embodiments, the ignition module 501 is disposed between the first burner 101 and the second burner 201 .

[0398] In this way, the ignition module 501 is disposed inside the burner assembly 300 to avoid damage caused by accidental collision, thereby improving the stability and ignition efficiency of the ignition module 501.

[0399] Specifically, in one embodiment, the ignition module 501 is disposed between the first burner 101 and the second burner 201 , which can reduce the impact of the external environment on the ignition process and ensure that the ignition needle 503 works normally.

[0400] It is understandable that the external environment may be an accidental collision or accidental spillage of liquid, etc., which may cause the ignition needle 503 to be damaged and unable to ignite normally.

[0401] That is, the ignition module 501 is disposed between the first burner 101 and the second burner 201 to ensure the stability of the ignition needle 503 , thereby providing a suitable ignition environment to achieve efficient ignition.

[0402] In one embodiment, the ignition module 501 can be arranged near the first fire hole 113 of the first burner 101, so that the first burner 101 ignites quickly, thereby igniting the gas at the second fire hole 213 of the second burner 201 by drawing the flame upward, thereby improving the ignition success rate of the burner assembly 300.

[0403] In some embodiments, the length direction of the ignition needle 503 forms an angle α with the central axis of the first burner 101, and the range of the angle α is (30°, 90°).

[0404] In this way, the ignition needle 503 is moved closer to the first fire hole 113 from above the inner periphery of the first burner 101 to ignite the gas in the first fire hole 113, thereby improving the ignition success rate.

[0405] Specifically, as shown in FIG. 7 , in one embodiment, the ignition needle 503 should be set at a suitable angle α to ensure that the discharge arc accurately and quickly ignites the gas in the first fire hole 113 , thereby improving the ignition success rate.

[0406] In one embodiment, the angle α formed by the length direction of the ignition needle 503 and the central axis of the first burner 101 is in the range of (30°, 90°) to ensure normal ignition of the burner assembly 300.

[0407] That is, the angle α may be in the range of (30°, 90°), i.e., 30° < α < 90°. In some examples, α may be 35°, 40°, 45°, 60°, 65°, 70°, 85°, or other values ​​between 30° and 90°.

[0408] When the angle α is greater than 90°, the angle α is too large, causing the end of the ignition needle 503 to tilt toward the second burner 201, resulting in an excessively large space between the first burner 101 and the second burner 201, making the distance between the first fire hole 113 and the second fire hole 213 relatively far, that is, the inner ring flame generated by the first fire hole 113 is less effective in igniting the gas at the second fire hole 213, resulting in poor ignition efficiency.

[0409] In addition, the distance between the inner ring flame and the pot bottom is quite different from the distance between the outer ring flame and the pot bottom, which makes the flame intensity at the pot bottom inconsistent, thereby reducing the flame uniformity.

[0410] When the angle α is less than 30°, the angle α is too small, causing the tip of the ignition needle 503 to deviate from the first fire hole 113 and be set upward, so that the arc generated by the ignition needle 503 is too far away from the first fire hole 113, making it difficult to draw the arc to the first fire hole 113, thereby reducing the ignition success rate.

[0411] In some embodiments, the length direction of the ignition needle 503 forms an angle α with the central axis of the first burner 101, and the range of the angle α is (60°, 70°).

[0412] In this way, the positions of the ignition needle 503 and the first fire hole 113 are ensured to be more appropriate, so that the ignition success rate of the first burner 101 is higher.

[0413] Specifically, as shown in FIG7 , in one embodiment, preferably, the angle α formed by the length direction of the ignition needle 503 and the central axis of the first burner 101 is in the range of (60°, 70°), so that the ignition success rate of the ignition needle 503 is high, thereby ensuring fast and efficient ignition of the first burner 101.

[0414] That is, the angle α may be in the range of (60°, 70°), i.e., 60° < α < 70°. In some examples, α may be 61°, 63°, 64°, 65°, 67°, 68°, 69°, or other values ​​between 60° and 70°.

[0415] When the angle α is greater than 70°, the angle α is larger, so that the space between the first burner 101 and the second burner 201 is larger, resulting in a longer distance between the first fire hole 113 and the second fire hole 213, that is, the effect of the inner ring flame generated by the first fire hole 113 in igniting the gas at the second fire hole 213 is poor, resulting in poor ignition efficiency.

[0416] In addition, the distance between the inner ring flame and the pot bottom is quite different from the distance between the outer ring flame and the pot bottom, which makes the flame intensity at the pot bottom inconsistent, thereby reducing the flame uniformity.

[0417] When the angle α is less than 60°, the angle α is small, so that the tip of the ignition needle 503 deviates from the first fire hole 113 and is set upward, so that the arc generated by the ignition needle 503 is far away from the first fire hole 113, and it is not easy to lead the arc to the first fire hole 113, thereby reducing the ignition success rate.

[0418] Please refer to FIG. 9 . In some embodiments, the ignition module 501 is disposed inside the first burner 101 .

[0419] In this way, the ignition needle 503 is moved closer to the first fire hole 113 from below the inner periphery of the first burner 101 to ignite the gas in the first fire hole 113, thereby improving the ignition success rate.

[0420] Specifically, as shown in Figure 9, in one embodiment, the ignition module 501 is arranged on the inner side of the first burner 101, that is, the ignition module 501 is close to the first fire hole 113 from the bottom of the inner periphery of the first burner 101, which can reduce the impact of accidental collisions or accidental spillage of liquid on the ignition process, thereby ensuring the normal operation of the ignition needle 503.

[0421] That is, the ignition module 501 is disposed inside the first burner 101 to improve the stability of the ignition needle 503 , thereby providing a stable ignition environment to achieve efficient ignition.

[0422] In one embodiment, the ignition module 501 is arranged near the first fire hole 113 of the first burner 101, so that the first burner 101 ignites quickly, igniting the gas at the second fire hole 213 of the second burner 201 by drawing the flame upward, thereby improving the ignition success rate of the burner assembly 300.

[0423] In one embodiment, the ignition module 501 is disposed inside the first burner 101 , so that the appearance of the burner assembly 300 is more beautiful and neat.

[0424] Please refer to Figure 8. In some embodiments, the first bracket 505 includes a fixing plate 531 and two groups of spring plates 532 extending from the fixing plate 531. Each group of spring plates 532 forms a corresponding slot 533. The ignition needle 503 and the thermocouple 504 are respectively fixed in the slot 533.

[0425] In this way, the ignition needle 503 and the thermocouple 504 are stably arranged on the first bracket 505, thereby ensuring normal ignition and flameout protection of the burner assembly 300.

[0426] Specifically, in one embodiment, the fixing plate 531 may be a supporting base plate for supporting and fixing the ignition needle 503 and the thermocouple 504 to improve the stability of the ignition module 501 .

[0427] In one embodiment, the spring piece 532 may be two arc-shaped metal sheets to form a clamping slot 533 , which can ensure that the ignition needle 503 and the thermocouple 504 are respectively clamped in the slot 533 , thereby improving the stability of the ignition module 501 .

[0428] It can be understood that the spring piece 532 is set at a certain angle on the bracket 22 so that the tip of the ignition needle 503 and the tip of the thermocouple 504 are set close to each other, and the end of the ignition needle 503 and the end of the thermocouple 504 are set far apart, thereby ensuring that the ignition needle 503 and the thermocouple 504 are close to the first fire hole 113, thereby ensuring normal ignition and flameout protection of the burner assembly 300.

[0429] In addition, the ignition needle 503 and the thermocouple 504 are integrated on the first bracket 505 to improve installation efficiency, while ensuring efficient ignition and flameout protection of the burner assembly 300, thereby improving the safety of the burner assembly 300.

[0430] Please refer to Figure 10. In some embodiments, the first burner 101 includes a first lower plate 122, a first upper plate 133 arranged on the first lower plate 122, and a first partition plate 143. The first lower plate 122 is formed with a first lower channel 125, and the first upper plate 133 is formed with a first upper channel 135 corresponding to the first lower channel 125. The first lower channel 125 and the first upper channel 135 are opposite to each other to form a first fire hole 113. The first partition plate 143 is arranged between the first lower plate 122 and the first upper plate 133, and separates the first lower channel 125 from the first upper channel 135.

[0431] In this way, the first upper channel 135 of the first upper plate 133 and the first lower channel 125 of the first lower plate 122 are arranged opposite to each other, so that the first fire hole 113 of the first burner 101 is formed opposite to each other, thereby increasing the total area of ​​the fire holes of the first burner 101, and further increasing the flame intensity and load upper limit of the first burner 101.

[0432] Specifically, the first lower plate 122 may be used to form the first fire hole 113 , and thus the first lower plate 122 may be made of a high-temperature-resistant and corrosion-resistant material.

[0433] In one embodiment, the first lower plate 122 can be made of aluminum alloy to ensure the bending performance of the first lower plate 122, thereby ensuring the concave shape of the first lower channel 125. In other embodiments, the first lower plate 122 can also be made of other materials, which are not specifically limited here.

[0434] Similarly, the first upper plate 133 can be used to form the first fire hole 113 with the first lower plate 122 , so the first upper plate 133 can be made of a high temperature resistant and corrosion resistant material.

[0435] In one embodiment, the first upper plate 133 can be made of the same material as the first lower plate 122 to ensure the bending performance of the first upper plate 133, thereby ensuring the upward convex formation of the first upper channel 135. In other embodiments, the first upper plate 133 can also be made of other materials, which are not specifically limited here.

[0436] It can be understood that the first lower channel 125 and the first upper channel 135 are formed in a diametrically opposed manner to form a ring-shaped first flame hole 113. Compared to a single first lower channel 125 or a single first upper channel 135 arranged in a staggered manner, the total area of ​​the first flame hole 113 is increased, thereby increasing the combustion volume of the gas and thus improving the flame intensity of the first burner 101.

[0437] In addition, compared with the burner without the first partition plate 143, the equivalent cross-sectional area of ​​the first fire hole 113 of the present application does not change, which can ensure that the first burner 101 has a larger flame and at the same time has excellent fire transfer and flame stabilization effects.

[0438] In certain embodiments, the first partition plate 143 is formed with a protrusion 141 configured to contact the arc generated by the ignition needle 503 .

[0439] In this way, the first partition plate 143 forms a protrusion 141, which contacts the arc generated by the ignition needle 503 to prevent the arc from running away, thereby increasing the ignition success rate and improving the user experience.

[0440] Specifically, the protrusion 141 is arranged on the first partition plate 143, and can be used to attract the arc generated by the ignition needle 503, so that the arc ignites the gas at the protrusion 141 to form a flame, so as to prevent the discharge arc of the ignition needle 503 from deviating from the direction of the first partition plate 143, thereby improving the ignition success rate of the first burner 101.

[0441] It can be understood that the first upper plate 133 and the first partition plate 143 form a first fire transfer gap 155 between two adjacent first upper channels 135. When the arc generated by the ignition needle 503 contacts the protrusion 141, the efficiency of the first fire hole 113 in forming an overall annular flame can be improved, thereby improving the ignition success rate of the first burner 101, and further ensuring the ignition efficiency of the burner assembly 300.

[0442] In some embodiments, the second burner includes a second lower plate 222, a second upper plate 233 and a second partition plate 243 arranged on the second lower plate 222, the second lower plate 222 is formed with a second lower channel 225, the second upper plate 233 is formed with a second upper channel 235 corresponding to the second lower channel 225, the second lower channel 225 and the second upper channel 235 are opposite to form a second fire hole 213, and the second partition plate 243 is arranged between the second lower plate 222 and the second upper plate 233, and separates the second lower channel 225 from the second upper channel 235.

[0443] In this way, the second upper channel 235 of the second upper plate 233 and the second lower channel 225 of the second lower plate 222 are arranged opposite to each other, so that the second fire hole 213 of the second burner 201 is formed opposite to each other, thereby increasing the total area of ​​the fire holes of the second burner 201, and further increasing the flame intensity and load upper limit of the second burner 201.

[0444] Specifically, in one embodiment, the second lower plate 222 may be used to form the second fire hole 213 , and thus the second lower plate 222 may be made of a high temperature resistant and corrosion resistant material.

[0445] In one embodiment, the second lower plate 222 can be made of aluminum alloy to ensure the bending performance of the second lower plate 222, thereby ensuring the formation of the second lower channel 225. In other embodiments, the second lower plate 222 can also be made of other materials, which are not specifically limited here.

[0446] Similarly, the second upper plate 233 can be used to form the second fire hole 213 with the second lower plate 222, so the second upper plate 233 can be made of a high temperature resistant and corrosion resistant material.

[0447] In one embodiment, the second upper plate 233 can be made of the same material as the second lower plate 222 to ensure the bending performance of the second upper plate 233, thereby ensuring the formation of the second upper channel 235. In other embodiments, the second upper plate 233 can also be made of other materials, which are not specifically limited here.

[0448] It is understood that the second lower channel 225 and the second upper channel 235 are formed opposite each other to form a circular-shaped second flame hole 213. Compared to a single second lower channel 225 or a single second upper channel 235 arranged in a staggered manner, the total area of ​​the second flame hole 213 is increased, thereby increasing the combustion volume of the gas and thus improving the flame intensity of the second burner 201.

[0449] In addition, compared with the burner without the second partition plate 243, the equivalent cross-sectional area of ​​the second fire hole 213 of the present application does not change, which can ensure that the second burner 201 has a larger flame and at the same time has excellent fire transfer and flame stabilization effects.

[0450] 7 , 11 and 12 , in certain embodiments, the inner diameter D2 of the second burner is 1.2 to 2.5 times the inner diameter D1 of the first burner.

[0451] In this way, it is ensured that the flame generated by the burner assembly 300 can better cover the bottom of the pot, thereby improving cooking efficiency.

[0452] Specifically, in one embodiment, the inner diameter D1 of the first burner may be set to ensure that the annular flame generated by the first burner 101 can be better located in the middle of the pot bottom, so as to improve the flame intensity in the middle of the pot bottom and ensure that the middle of the pot bottom is heated evenly.

[0453] In one embodiment, the inner diameter D2 of the second burner is 1.2 to 2.5 times the inner diameter D1 of the first burner to ensure that the flame generated by the burner assembly 300 heats the bottom of the pot evenly, thereby improving gas utilization and cooking efficiency.

[0454] It can be understood that when the inner diameter of the first burner 101 is D1, the inner diameter D2 of the second burner can be in the range of (1.2D1, 2.5D1), so that the flame generated by the second burner 201 can better cover the edge of the bottom of the pot, thereby ensuring that the middle and edge of the bottom of the pot are evenly heated, thereby improving cooking efficiency.

[0455] That is, the inner diameter D2 of the second burner is in the range of 2.5D1>D2>1.2D1. In some examples, the inner diameter D2 of the second burner may be 1.3D1, 1.5D1, 1.6D1, 1.9D1, 2.0D1, 2.3D1, 2.4D1, or other values ​​between 1.2D1 and 2.5D1.

[0456] When the inner diameter D2 of the second burner is greater than 2.5D1, the inner diameter D2 of the second burner is too large, causing the outer ring flame generated by the second fire hole 213 to extend toward the outside of the pot bottom, resulting in a large distance between the outer ring flame and the inner ring flame at the bottom of the pot, insufficient heating, and reduced flame uniformity of the burner assembly 300.

[0457] In addition, the outward extension of gas reduces the gas utilization rate, and there is also a risk of high temperature of the pot handle causing burns to the user.

[0458] When the inner diameter D2 of the second burner is less than 1.2D1, the inner diameter D2 of the second burner is too small, so that the outer ring flame generated by the second fire hole 213 is close to the inner ring flame generated by the first fire hole 113, resulting in excessive heating of the middle part of the bottom of the pot and insufficient heating of the edge of the bottom of the pot, making the overall bottom of the pot heated unevenly, which is prone to safety risks.

[0459] In certain embodiments, the inner diameter D2 of the second burner is 1.5 times the inner diameter D1 of the first burner.

[0460] In this way, by adjusting the appropriate flame position, the heating area of ​​the pot bottom and the cooking efficiency can be further improved while ensuring that the flame covers the pot bottom well.

[0461] Specifically, in one embodiment, the inner diameter D2 of the second burner is 1.5 times the inner diameter D1 of the first burner, so that the inner ring flame generated by the first fire hole 113 and the outer ring flame generated by the second fire hole 213 are located at appropriate positions on the bottom of the pot, thereby better ensuring the heat supply and flame uniformity of the bottom of the pot.

[0462] It can be understood that the inner diameter D2 of the second burner can be D2=1.5D1, so that the outer ring flame generated by the second burner 201 can just wrap around the edge of the bottom of the pot while ensuring that the inner ring flame generated by the first burner 101 is located in the middle of the bottom of the pot, thereby improving the flame uniformity of the burner assembly 300, and further improving the gas utilization efficiency and cooking efficiency.

[0463] In one embodiment, for example, the inner diameter D1 of the first burner is 80 mm. From D2=1.5D1, it can be seen that the inner diameter D2 of the second burner is 120 mm, so as to ensure that the flame generated by the burner assembly 300 better covers the bottom of the pot, thereby ensuring the flame uniformity and flame intensity, so as to improve cooking efficiency and gas utilization.

[0464] In other embodiments, the inner diameter D1 of the first burner may also be other values, as long as D2=1.5D1 is ensured, and no specific limitation is made here.

[0465] 8 , 13 and 14 , in some embodiments, the burner assembly 300 includes a second bracket 40 , a fixing hole 534 is formed in the first bracket 505 , and the ignition module 501 is mounted on the second bracket 40 through the fixing hole 534 .

[0466] In this way, while ensuring that the ignition module 501 is stably disposed on the second bracket 40 , the ignition needle 503 is directed toward and close to the protrusion 141 , thereby ensuring ignition efficiency.

[0467] Specifically, referring to FIG. 13 , in one embodiment, the burner assembly 300 further includes an oil cup 60 and a fixing plate 701 .

[0468] In one embodiment, the oil cup 60 can be used to hold oil droplets flowing down the guide plate 301 during the cooking process to improve the cleanliness of the kitchen and thus enhance the user experience.

[0469] In one embodiment, the fixing plate 701 is disposed above the second burner 201 and can be used to fix the second burner 201 to improve the stability and safety of the burner assembly 300 .

[0470] In one embodiment, the second bracket 40 may be a burner bracket, and the ignition module 501 may be stably set on the second bracket by screws engaging the fixing holes 534 , thereby improving the stability of the ignition needle 503 and the ignition success rate.

[0471] In one embodiment, the second bracket 40 may be disposed at the bottom of the burner assembly 300 , and the second bracket 40 may be formed with a cylindrical inner cavity for holding the oil cup 60 to ensure that the burner assembly 300 is clean and sanitary.

[0472] In one embodiment, the second bracket 40 is also formed with multiple claws, and the multiple claws are formed with multiple mounting holes, which can be used to fix and support the ignition module 501 and the burner assembly 300, ensuring the stable operation of the burner assembly 300 and improving the safety of kitchen cooking.

[0473] In addition, the second bracket 40 can be used to fix multiple components, such as the ignition module 501 , the oil cup 60 and the fixing plate 701 , so as to improve the installation efficiency of the burner assembly 300 .

[0474] In one embodiment, the second bracket 40 may be integrally die-casted from an aluminum alloy material to reduce weight and production costs, or may be formed using other processes, which are not specifically limited herein.

[0475] In one embodiment, the first bracket 505 can be used to support the ignition module 501 to improve the stability of the ignition module 501. In addition, the fixing hole 534 formed in the first bracket 505 has a limiting function, so that the ignition needle 503 is oriented toward and close to the protrusion 141, thereby improving the ignition success rate.

[0476] Please refer to FIG. 7 . In some embodiments, there is a first height difference H1 between the first fire hole 113 and the second fire hole 213 . The range of the first height difference H1 is (15 mm, 40 mm).

[0477] This improves the ignition efficiency and heat dissipation efficiency of the burner assembly 300. When the first height difference H1 is greater than 40 mm, the first height difference H1 is too large, resulting in the first burner 101 and the second burner 201 being too far apart, making it difficult for the flame of the first burner 101 to assist in igniting the second burner 201. When the first height difference H1 is less than 15 mm, the first height difference H1 is too small, resulting in the first burner 101 and the second burner 201 being too close together, resulting in poor heat dissipation and excessive heat inside the burner assembly 300, which can easily create safety hazards.

[0478] Specifically, in one embodiment, the first height difference H1 should be selected to be a suitable distance to ensure normal operation and safe use of the first burner 101 and the second burner 201 .

[0479] In one embodiment, the first height difference H1 may be in the range of (15 mm, 40 mm) to ensure the heat dissipation efficiency and flame transfer efficiency of the burner assembly 300 , thereby improving the safety of the burner assembly 300 .

[0480] That is, the first height difference H1 may be in the range of (15 mm, 40 mm), i.e., 15 mm < H1 < 40 mm. In some examples, H1 may be 17 mm, 19 mm, 23 mm, 25 mm, 30 mm, 32 mm, 37 mm, or other values ​​between 15 mm and 40 mm.

[0481] When the first height difference H1 is greater than 40 mm, the first height difference H1 is too large, so that the distance between the first burner 101 and the second burner 201 is too far, and it is difficult to assist the ignition of the second burner 201 by the flame of the first burner 101, thereby reducing the ignition efficiency.

[0482] When the first height difference H1 is less than 15 mm, the first height difference H1 is too small, so that the distance between the first burner 101 and the second burner 201 is too close, the heat dissipation effect is poor, and the internal heat of the burner assembly 300 is too high, which easily creates a safety hazard.

[0483] In some embodiments, there is a first height difference H1 between the first fire hole 113 and the second fire hole 213 , and the first height difference H1 is in the range of (20 mm, 30 mm).

[0484] This further improves the ignition efficiency and heat dissipation efficiency of the burner assembly 300. When the first height difference H1 is greater than 30 mm, the first height difference H1 is large, resulting in a greater distance between the first burner 101 and the second burner 201, and the flame of the first burner 101 assisting the ignition of the second burner 201 is low. When the first height difference H1 is less than 20 mm, the first height difference H1 is small, resulting in a closer distance between the first burner 101 and the second burner 201, poor heat dissipation, and high internal heat in the burner assembly 300, which can easily create safety hazards.

[0485] Specifically, in one embodiment, the first height difference H1 should be selected to be a suitable distance to ensure normal operation and safe use of the first burner 101 and the second burner 201 .

[0486] In one embodiment, preferably, the first height difference H1 may be in the range of (20 mm, 30 mm) to further improve the heat dissipation efficiency and flame transfer efficiency of the burner assembly 300 .

[0487] That is, the first height difference H1 may be in the range of (20 mm, 30 mm), i.e., 20 mm < H1 < 30 mm. In some examples, H1 may be 21 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 29 mm, or other values ​​between 20 mm and 30 mm.

[0488] When the first height difference H1 is greater than 30 mm, the first height difference H1 is large, so that the distance between the first burner 101 and the second burner 201 is large, and the ignition efficiency of the second burner 201 assisted by the flame of the first burner 101 is low.

[0489] When the first height difference H1 is less than 20 mm, the first height difference H1 is small, so that the distance between the first burner 101 and the second burner 201 is close, the heat dissipation effect is poor, and the internal heat of the burner assembly 300 is high, which is prone to safety hazards.

[0490] In some embodiments, there is a first height difference H1 between the first fire hole 113 and the second fire hole 213 , and the first height difference H1 is 23.65 mm.

[0491] In this way, the ignition efficiency and heat dissipation efficiency of the burner assembly 300 are higher, thereby ensuring the safety of the burner assembly 300.

[0492] Specifically, in one embodiment, preferably, the first height difference H1 can be 23.65 mm, that is, the distance between the first fire hole 113 and the second fire hole 213 is 23.65 mm. While ensuring that there is a suitable heat dissipation space between the first burner 101 and the second burner 201, the first fire hole 113 can quickly assist the ignition of the second fire hole 213 by drawing the flame upward, thereby improving the ignition efficiency and heat dissipation efficiency of the burner assembly 300.

[0493] It can be understood that when the first height difference H1 is 23.65 mm, the flame generated by the first burner 101 is transmitted from the first fire hole 113 to the second fire hole 213 (from bottom to top), which can better ignite the gas at the second fire hole 213 from the inner periphery of the second burner 201 to form a double-ring flame to cover the bottom of the pot, thereby improving the ignition efficiency.

[0494] In addition, when the first height difference H1 is 23.65 mm, the heat dissipation space between the first burner 101 and the second burner 201 is appropriate, which can ensure that the air flows smoothly in the burner assembly 300, that is, the internal heat of the burner assembly 300 can be removed by air cooling, thereby improving the heat dissipation efficiency and ensuring the safe operation of the burner assembly 300.

[0495] Please refer to Figures 10 and 13. In some embodiments, the burner assembly 300 includes a guide plate 301, which is arranged between the first burner 101 and the second burner 201. There is a second height difference H2 between the guide plate 301 and the top of the first fire hole 113, and there is a third height difference H3 between the guide plate 301 and the bottom of the second fire hole 213. The third height difference H3 is greater than the second height difference H2.

[0496] In this way, the first burner 101 and the second burner 201 are respectively kept at an appropriate distance from the guide plate 301 to improve the air flow inside the burner assembly 300, thereby improving the combustion efficiency of the burner assembly 300.

[0497] Specifically, in one embodiment, the guide plate 301 is arranged in a funnel shape between the first burner 101 and the second burner 201, and the end with a larger opening is arranged near the bottom of the second fire hole 213, and the end with a smaller opening is arranged near the top of the first fire hole 113, so as to increase the space between the first burner 101 and the second burner 201, ensure the supply of secondary air, and thus improve the combustion efficiency of the burner assembly 300.

[0498] In one embodiment, the second height difference H2 can be the distance between the guide plate 301 and the top of the first fire hole 113. The second height difference H2 should be selected to be a smaller distance so that the secondary air reaches the first fire hole 113 faster, thereby ensuring the combustion efficiency of the first burner 101.

[0499] In one embodiment, the third height difference H3 can be the distance between the guide plate 301 and the bottom of the second fire hole 213. The third height difference H3 should be selected to have a larger spacing to ensure that secondary air quickly passes into the interior of the burner assembly 300 from multiple paths, thereby improving the combustion efficiency of the burner assembly 300.

[0500] It can be understood that the third height difference H3 is greater than the second height difference H2, ensuring that the distance between the guide plate 301 and the bottom of the second fire hole 213 is large, so that the secondary air can pass into the burner assembly 300 faster and provide sufficient secondary air for the burner assembly 300.

[0501] In addition, the third height difference H3 is greater than the second height difference H2, ensuring that the distance between the guide plate 301 and the top of the first fire hole 113 is small, so that the secondary air inside the burner assembly 300 is transported over a shorter distance and at a faster speed, thereby improving the combustion efficiency of the burner assembly 300.

[0502] It is worth noting that the guide plate 301 is funnel-shaped and arranged between the first burner 101 and the second burner 201. It can also be used to direct oil droplets generated during the cooking process into the oil cup 60 along the side wall of the guide plate 301 to improve the cleanliness of the burner assembly 300.

[0503] In one embodiment, the guide plate 301 is funnel-shaped and is disposed between the first burner 101 and the second burner 201 . The guide plate 301 can also be used to shield the internal structure of the burner assembly 300 , making the burner assembly 300 beautiful and neat.

[0504] Referring to FIG. 10 , in some embodiments, the second height difference H2 is in the range of (0, 8 mm).

[0505] In this way, a suitable distance is maintained between the top of the first burner 101 and the guide plate 301 to improve the supply of secondary air, thereby improving the combustion efficiency of the first burner 101 .

[0506] Specifically, in one embodiment, the second height difference H2 should be selected to have a suitable distance to ensure the supply speed of the secondary air of the first fire hole 113 , thereby improving the combustion efficiency of the first burner 101 .

[0507] In one embodiment, the second height difference H2 may be in the range of (0, 8 mm) to provide sufficient secondary air in a timely manner to ensure that the gas at the first fire hole 113 is fully burned, thereby improving the combustion efficiency of the first burner 101 .

[0508] That is, the second height difference H2 may be in the range of (0, 8 mm), that is, 0<H2<8 mm. In some examples, H2 may be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, or other values ​​between 0 and 8 mm.

[0509] When the second height difference H2 is greater than 8 mm, the second height difference H2 is too large, so that the time for the secondary air to reach the first flame hole 113 is too long, thereby reducing the combustion efficiency of the first burner 101 and causing low flame uniformity.

[0510] In certain embodiments, the second height difference H2 is 5 mm.

[0511] In this way, while ensuring that there is an appropriate distance between the top of the first burner 101 and the guide plate 301, the supply of secondary air is sufficient, thereby making the combustion efficiency of the first burner 101 higher.

[0512] Specifically, in one embodiment, preferably, the second height difference H2 can be 5 mm, that is, the distance between the top of the first fire hole 113 and the guide plate 301 is 5 mm. While ensuring that there is an appropriate distance between the top of the first burner 101 and the guide plate 301, the secondary air can quickly reach the first fire hole 113, thereby making the combustion efficiency of the first burner 101 higher.

[0513] It can be understood that when the second height difference H2 is 5 mm, the gas at the first fire hole 113 can be fully burned by the secondary air, thereby making the combustion efficiency of the first burner 101 higher and further improving the flame intensity.

[0514] In addition, when the second height difference H2 is 5 mm, the distance between the first burner 101 and the guide plate 301 is large, and the heat dissipation efficiency is high, thereby ensuring the safe operation of the burner assembly 300.

[0515] In some embodiments, the third height difference H3 is in the range of (0, 15 mm).

[0516] In this way, the bottom of the second burner 201 is kept at an appropriate distance from the guide plate 301 to improve the supply of secondary air, thereby improving the combustion efficiency and ensuring the flame uniformity of the burner assembly 300.

[0517] Specifically, in one embodiment, the third height difference H3 should be selected to have a suitable distance so that sufficient secondary air can be introduced into the burner assembly 300 while ensuring full combustion of the gas in the second fire hole 213 , thereby ensuring flame uniformity of the burner assembly 300 .

[0518] In one embodiment, the third height difference H3 may be in the range of (0, 15 mm), i.e., 0<H3<15 mm. In some examples, H3 may be 1 mm, 3 mm, 4 mm, 7 mm, 9 mm, 10 mm, 13 mm, or other values ​​between 0 and 15 mm.

[0519] When the third height difference H3 is greater than 15 mm, the third height difference H3 is too large, so that the distance between the guide plate 301 and the second fire hole 213 is too large, the stability is reduced, and it is difficult to fix.

[0520] In addition, the third height difference H3 is too large, which makes the burner assembly 300 larger and occupies a larger space.

[0521] In certain embodiments, the third height difference H3 is 9 mm.

[0522] In this way, while ensuring that there is an appropriate distance between the bottom of the second burner 201 and the guide plate 301, the supply of secondary air is sufficient, so that the combustion efficiency of the burner assembly 300 is higher and the flame uniformity is better.

[0523] Specifically, in one embodiment, preferably, the third height difference H3 can be 9 mm, that is, the distance between the bottom of the second fire hole 213 and the guide plate 301 is 9 mm. While ensuring that the gas in the second fire hole 213 is fully burned, sufficient secondary air is allowed to enter the burner assembly 300, thereby making the combustion efficiency of the first burner 101 higher, thereby ensuring that the flame uniformity of the burner assembly 300 is better.

[0524] It can be understood that when the third height difference H3 is 9 mm, the gas at the second fire hole 213 can be fully burned by the secondary air, thereby making the combustion efficiency of the second burner 201 higher and further improving the flame intensity.

[0525] Furthermore, when the third height difference H3 is 9 mm, sufficient secondary air can quickly enter the burner assembly 300 through the third height difference H3, accelerating air flow and heat dissipation. Simultaneously, sufficient secondary air can also flow along the sidewalls of the guide plate 301 to the first flame holes 113, ensuring sufficient combustion of the gas in the first flame holes 113. This ensures high combustion efficiency and flame uniformity in the burner assembly 300.

[0526] In some embodiments, a first fire transfer gap 155 is formed between the first upper plate 133 and the first partition plate 143 , and the first fire transfer gap 155 communicates with two adjacent first fire holes 113 .

[0527] In this way, two adjacent independent first flame holes 113 are connected together, thereby ensuring the formation of an integral flame, thereby improving the flame transfer capability and flameout resistance of the first burner 101 .

[0528] Specifically, in one embodiment, the first flame transfer gap 155 is formed between the first upper plate 133 and the first partition plate 143 to ensure that a connectable gap is formed between two adjacent first upper channels 135 in the first upper plate 133 to transfer and stabilize the flame.

[0529] It can be understood that during the ignition process of the first burner 101, the ignition needle 503 can release an electric arc to the protrusion 141 to ignite the gas at the outlet of one of the first upper channels 135, and transfer the flame to the two adjacent first upper channels 135 through the first fire transfer gap 155, thereby forming a continuous flame, thereby ensuring the fire transfer efficiency and ignition success rate.

[0530] During the continuous operation of the first burner 101, the first fire transfer gap 155 connects the two adjacent first upper channels 135 and continuously replenishes secondary air to ensure that the gas in the two adjacent first upper channels 135 is fully burned, so that the first burner 101 forms an overall continuous flame, thereby ensuring high flame intensity and good stability, thereby improving the anti-fire ability of the first burner 101 and achieving the purpose of flame stabilization.

[0531] In one embodiment, the first flame transfer gap 155 may be in the range of [0.50 mm, 0.80 mm], so that two adjacent independent first upper channels 135 are connected together to ensure the flame transfer capability and flame stabilization capability of the first burner 101 .

[0532] That is, the first ignition gap 155 ranges from 0.50 mm to 0.80 mm. In some examples, the first ignition gap 155 can be 0.50 mm, 0.57 mm, 0.62 mm, 0.68 mm, 0.70 mm, 0.71 mm, 0.80 mm, or other values ​​between 0.50 mm and 0.80 mm.

[0533] When the first flame transfer gap 155 is less than 0.50 mm, the first flame transfer gap 155 is too small, the flame transfer efficiency and the secondary air supply efficiency are low, and the flame transfer ability of the first burner 101 is poor.

[0534] When the first flame transmission gap 155 is larger than 0.80 mm, the first flame transmission gap 155 is too large, the flame stability is low, and the flameout resistance of the first burner 101 is poor, which easily causes flameout and extinguishing.

[0535] In some embodiments, a second fire transmission gap 255 is formed between the second upper plate 233 and the second partition plate 243 , and the second fire transmission gap 255 communicates with two adjacent second fire holes 213 .

[0536] In this way, two adjacent independent second flame holes 213 are connected together, thereby ensuring the formation of an integral flame, thereby improving the flame transfer capability and flameout resistance of the second burner 201 .

[0537] Specifically, in one embodiment, the second flame transfer gap 255 is formed between the second upper plate 233 and the second partition plate 243 to ensure that a connectable gap is formed between two adjacent second upper channels 235 in the second upper plate 233 to play the role of transmitting and stabilizing the flame.

[0538] It can be understood that the second burner 201 can be ignited by the flame generated by the first burner 101 to ignite the gas at the second fire hole 213, and transfer the flame to the two adjacent second upper channels 235 through the second fire transfer gap 255, thereby forming a continuous flame, thereby ensuring the fire transfer efficiency and ignition success rate.

[0539] During the continuous operation of the second burner 201, the second fire transfer gap 255 connects the two adjacent second upper channels 235 and continuously replenishes secondary air to ensure that the gas in the two adjacent second upper channels 235 is fully burned, so that the second burner 201 forms an overall continuous flame, thereby ensuring high flame intensity and good stability, thereby improving the anti-fire resistance of the second burner 201 and achieving the purpose of flame stabilization.

[0540] In one embodiment, the second flame transfer gap 255 may be in the range of [0.50 mm, 0.80 mm], so that two adjacent independent second upper channels 235 are connected together to ensure the flame transfer capability and flame stabilization capability of the second burner 201 .

[0541] That is, the second ignition gap 255 ranges from 0.50 mm to 0.80 mm. In some examples, the second ignition gap 255 can be 0.50 mm, 0.57 mm, 0.62 mm, 0.68 mm, 0.70 mm, 0.71 mm, 0.80 mm, or other values ​​between 0.50 mm and 0.80 mm.

[0542] When the second flame transfer gap 255 is less than 0.50 mm, the second flame transfer gap 255 is too small, the flame transfer efficiency and the secondary air supply efficiency are low, and the flame transfer ability of the second burner 201 is poor.

[0543] When the second flame transmission gap 255 is larger than 0.80 mm, the second flame transmission gap 255 is too large, the flame stability is low, and the flameout resistance of the second burner 201 is poor, which easily causes flameout and extinguishing.

[0544] Referring to FIG. 15 , an embodiment of the present invention provides a stove 1000 , which includes the burner assembly 300 according to any one of the above embodiments.

[0545] In the above-mentioned stove 1000, the ignition module 501 integrates the ignition needle 503 and the thermocouples 504504 into one, so that the ignition needle 503 is close to the first fire hole 113 and located inside the burner assembly 300, thereby improving the ignition success rate of the first burner 101 and the second burner 201, and is easy to install.

[0546] Specifically, in one embodiment, the stove 1000 may be a natural gas stove, a liquefied gas stove, or a coal gas stove.

[0547] It is understood that the cooker 1000 includes a burner assembly 300, and the burner assembly 300 includes at least one burner, such as a single inner ring burner, a single outer ring burner, a double-ring inner flame burner, or a multi-ring inner flame burner.

[0548] In one embodiment, the cooktop 1000 includes a burner head 200 , which includes a burner assembly 300 , and the burner assembly 300 includes at least one burner.

[0549] In one embodiment, the stove 1000 may be a single-burner stove, a double-burner stove, or a multi-burner stove.

[0550] As shown in FIG15 , FIG15 is a schematic structural diagram of a dual-burner stove, that is, the burner 200 includes a burner assembly 300. The burner assembly 300 can be an outer ring burner, an inner ring burner, or a double ring burner formed by combining an outer ring burner and an inner ring burner, without specific limitation herein.

[0551] In addition, as cooking technology continues to improve, the requirements for burners are getting higher and higher, and the combustion efficiency of burners also needs to be improved.

[0552] A burner generally has an inner fire hole and an outer fire hole to achieve the effects of inner and outer ring combustion of the cookware. However, in the prior art, when secondary air is replenished, the flames at the inner fire hole and the flames at the outer fire hole will compete for the secondary air, resulting in poor combustion efficiency of the burner.

[0553] To solve the above problems, please refer to Figure 16. One aspect of the present invention provides a stove. In an embodiment of the present invention, the stove includes a stove shell, a burner 100 and a liquid receiving pan. The stove shell defines a receiving cavity. The burner 100 is installed in the receiving cavity and is used to heat the cooker.

[0554] The stove shell includes a panel with an opening communicating with the accommodating cavity. The liquid receiving pan is installed at the opening and is used to receive soup overflowed from the cooker for easy cleaning while preventing the soup from flowing into the stove shell.

[0555] In order to improve the combustion efficiency of the burner 100, please refer to Figures 17 to 19. Another aspect of the present invention provides a burner 100. In an embodiment of the present invention, the burner 100 may include a burner body, a guide plate 50, a mounting bracket 10, an oil cup 60, a thermocouple 70, an igniter 71, a fixing bracket 73, and a pressure cover 90. The mounting bracket 10 is mounted on the stove body, at least two burner units 30, the guide plate 50, the oil cup 60, the fixing bracket 73, and the pressure cover 90 are fixed to the mounting bracket 10, and the thermocouple 70 and the igniter 71 are mounted on the fixing bracket 73. The burner body has a gas channel 30h formed therein and is provided with an inner ring fire hole 30a and an outer ring fire hole 30f, each of which is connected to the gas channel 30h. The outer ring fire hole 30f is arranged around the outer side of the inner ring fire hole 30a. The burner body also has an air supply channel 30c independent of the gas channel 30h. The air supply channel 30c includes an air inlet 30d located on the outer side wall of the burner body and an air outlet 30k located between the inner ring fire hole 30a and the outer ring fire hole 30f. Specifically, the structure of the burner body can be an integrated structure, for example, the burner body can be manufactured by an integrated casting method. Of course, the burner body can also be a split structure, that is, the burner body includes two burner units 30 arranged separately, which is not limited here.

[0556] As can be understood, when the burner body is configured as a two-part structure with two burner units 30, it can be manufactured separately, such as by forging, thereby reducing the production cost of the burner 100. When maintenance is required on a single burner unit 30, only that burner unit 30 needs to be disassembled for maintenance, facilitating maintenance by personnel. The following further describes the burner 100 of the present invention, which has excellent combustion efficiency, using the burner body configured as two burner units 30.

[0557] There are two burner monomers 30, one of which is formed with an inner ring fire hole 30a, and the other burner monomer 30 is formed with an outer ring fire hole 30f. It can be understood that the burner monomer 30 formed with the inner ring fire hole 30a is an inner ring burner, and the burner monomer 30 formed with the outer ring fire hole 30f is an outer ring burner. The interior of each burner monomer 30 is formed into a gas channel 30h, and the gap between the two burner monomers 30 is formed into a gas supply channel 30c. Among them, the upper shell 31 and the lower shell 33 can be made of stainless steel, copper alloy or aluminum alloy. When made of stainless steel, stainless steel has the advantages of low cost, long service life and higher melting point compared to copper, so it is burn-resistant. In addition, the upper shell 31 and the lower shell 33 can be formed in one step by forging or stamping to improve processing efficiency. The upper shell 31 and the lower shell 33 can be joined by welding them together after they are joined together, achieving a secure connection. The burner unit 30 includes an ejector tube 35 and a burner head 37 fixedly connected to the ejector tube 35. The burner head 37 is provided with an inner ring of fire holes 30a or an outer ring of fire holes 30f.

[0558] Please refer to Figures 17 to 19 , where a portion of the upper shell 31 and a portion of the lower shell 33 together form an ejector tube portion 35, and the remaining portion of the upper shell 31 and the remaining portion of the lower shell 33 together form a burner head portion 37. Please continue to refer to Figures 20 to 22 , where the burner unit 30 (inner ring burner) formed with the inner ring fire hole 30a also includes a first baffle 32. A gap is formed between the portion of the burner head portion 37 in the upper shell 31 that forms the inner ring fire hole 30a and the corresponding portion of the burner head portion 37 in the lower shell 33 that forms the inner ring fire hole 30a. The first baffle 32 is disposed in the gap and separates the inner ring fire hole 30a into two sub-inner ring fire holes 30b that are disposed opposite each other in the height direction of the burner 100. Thus, by dividing the inner ring fire hole 30a into two sub-inner ring fire holes 30b, the area of ​​the inner ring fire hole 30a can be reduced, thereby increasing the combustion resistance of the sub-inner ring fire holes 30b to the flame, reducing the probability of flame flashback and flameout. Furthermore, compared to staggered arrangement of the two sub-inner ring fire holes 30b, the directly opposite arrangement of the sub-inner ring fire holes 30b ensures that each burner unit 30 has a sufficient number of sub-inner ring fire holes 30b to ensure the heat load of the burner unit 30.

[0559] The burner unit 30 (outer ring burner) having the outer ring fire hole 30f formed therein further includes a second partition plate 34. A gap is formed between the portion of the burner head portion 37 in the upper shell 31 that forms the outer ring fire hole 30f and the portion of the burner head portion 37 in the lower shell 33 that forms the outer ring fire hole 30f. The second partition plate 34 is disposed within the gap and separates the outer ring fire hole 30f into two sub-outer ring fire holes 30g that are disposed opposite each other in the height direction of the burner 100. Thus, by separating the outer ring fire hole 30f into two sub-outer ring fire holes 30g, the area of ​​the outer ring fire hole 30f can be reduced, thereby increasing the combustion resistance of the sub-outer ring fire holes 30g to the flame, and reducing the probability of flame flashback and flameout. Moreover, compared with the staggered arrangement of the two sub-outer ring fire holes 30g, the facing arrangement of the sub-outer ring fire holes 30g can ensure that each burner unit 30 can open a sufficient number of sub-outer ring fire holes 30g to ensure the heat load of the burner unit 30.

[0560] When there are two burner units 30, the present invention can improve the wrapping of the bottom of the cooker through the cooperation of the inner ring burner and the outer ring burner, improve the convection heat transfer coefficient between the bottom of the cooker and the flame of the burner unit 30, and achieve an improvement in the combustion efficiency of the burner 100.

[0561] The mounting bracket 10 can be made of copper, aluminum or alloy, among which the alloy material can specifically be stainless steel, for example, it can be formed by forging to facilitate processing. The mounting bracket 10 can include a base 11, at least two connecting legs 13 and connecting ribs 15. The base 11 is connected to the stove body, for example, the base 11 can be provided with a first fixing hole, the bottom of the stove body can be provided with a second fixing hole, and the base 11 and the stove body can be fixedly connected by a connecting member that cooperates with the first fixing hole and the second fixing hole. Among them, the number of the first fixing holes can be at least two, and the at least two first fixing holes are arranged at intervals along the circumference of the base 11, and the number of the second fixing holes at the bottom of the stove body can also be at least two, and one first fixing hole corresponds to one second fixing hole, so that the connection firmness between the base 11 and the bottom of the stove body can be further improved.

[0562] At least two connecting legs 13 are connected to the base 11. The at least two connecting legs 13 can be arranged at intervals along the circumference of the base 11. The number of connecting legs 13 can be two, three, or four, etc., without limitation. Connecting ribs 15 are connected to the base 11 and / or the connecting legs 13. For example, the connecting ribs 15 can be connected to the base 11, or connected to one connecting leg 13, or connected between two adjacent connecting legs 13. The connecting ribs 15 connect the two connecting legs 13, and the connecting ribs 15 serve as reinforcing ribs between the two connecting legs 13 to increase the strength of the connecting legs 13 and prevent deformation of the connecting legs 13.

[0563] The mounting bracket 10 has at least two connecting portions 131. Specifically, the connecting leg 13 of the mounting bracket 10 is provided with a connecting portion 131. A burner unit 30 is connected to one of the connecting portions 131, thereby connecting the burner unit 30 to the connecting leg 13 of the mounting bracket 10. The connecting leg 13 may also have a first fixing portion 1314 and a third fixing portion 1315. The guide plate 50 is connected to the first fixing portion 1314, and the gland 90 is connected to the third fixing portion 1315 and the connecting portion 131. The connecting rib 15 has a second fixing portion 151, and the fixing bracket 73 is connected to the second fixing portion 151. This allows the mounting bracket 10 to support and install the various components of the burner 100, with a relatively small number of components and excellent support and fixing effects. In the structure exemplarily shown in the figure, when there are three connecting legs 13, one of the connecting legs 13 is provided with a connecting portion 131, a first fixing portion 1314 and a third fixing portion 1315, and the remaining two connecting legs 13 are both provided with a connecting portion 131 and a first fixing portion 1314.

[0564] The connecting legs 13 extend in the height direction of the burner 100, and the two burner units 30 are spaced apart in the extension direction of the connecting legs 13. This allows the two burner units 30 to have a height difference in the height direction of the burner 100. In actual use, when the areas of the inner ring fire holes 30a and the outer ring fire holes 30f are equal, if the number of outer ring fire holes 30f on the outer ring burner is greater than the number of inner ring fire holes 30a on the inner ring burner, the total area of ​​the outer ring fire holes 30f on the outer ring burner will be larger, meaning that the outer ring burner has a higher thermal efficiency for the cooker. When the outer ring burner is located above the inner ring burner in the height direction of the burner 100, the distance between the outer ring burner and the cooker is closer than the distance between the inner ring burner and the cooker. Thus, positioning the outer ring burner closer to the cooker can better utilize the outer ring burner's thermal efficiency to heat the cooker, thereby improving the overall thermal efficiency of the burner 100. In addition, when there is a height difference between the two burner units 30, the situation in which the two burner units 30 compete with each other for secondary air from the environment is reduced. For example, when the outer ring burner is located above the inner ring burner, the outer ring burner and the inner ring burner are prevented from competing with each other for secondary air from the environment. In this way, the efficiency of supplying secondary air to the flames at the inner ring fire hole 30a of the inner ring burner and the outer ring fire hole 30f of the outer ring burner can be effectively improved, so that the flames can burn fully and the carbon monoxide produced by the burner 100 can be better converted into carbon dioxide, reducing the emission of stove smoke, ensuring the user's physical safety, and better improving the user experience.

[0565] The gap between the two burner units 30 forms an air supply channel 30c. This channel is independent of the gas channel 30h and can be used to replenish the secondary air required for flame combustion at the inner and outer ring fire holes 30a, 30f. When the two burner units 30 have a height difference in the direction of the burner 100, the air supply channel 30c is formed by the gap between the two burner units 30 in the direction of the burner 100. The air supply channel 30c includes an air inlet 30d located between the two burner units 30 and an air outlet 30k between the outer and inner ring fire holes 30f. A guide plate 50 is provided at the air outlet 30k and cooperates with the inner wall of the air supply channel 30c to define an inner ring air supply port 30i and an outer ring air supply port 30j, facing the inner and outer ring fire holes 30a, 30f, respectively. In this way, secondary air can enter the air supply channel 30c through the air inlet 30d, and then flow out through the inner ring air supply port 30i and the outer ring air supply port 30j respectively, so as to flow through the corresponding inner ring fire hole 30a and the outer ring fire hole 30f respectively.

[0566] The guide plate 50 can be an annular body made of materials such as stainless steel, cold plate or aluminum alloy, and includes a guide body 51 and a first connecting foot 53 connected to the outer edge of the guide body 51. The first connecting foot 53 is connected to the first fixing portion 1314, and the guide body 51 is arranged at the air outlet 30k. In this way, each burner unit 30 can be supplemented with its own secondary air without taking the air from another burner unit 30, further effectively improving the secondary air supply efficiency and further reducing smoke emissions. When the first connecting foot 53 is connected to the first fixing portion 1314, the first connecting foot 53 cooperates with the surface of the connecting portion 131 to press and fix the burner unit 30 with the inner ring fire hole 30a, further improving the connection stability between the burner unit 30 and the connecting leg 13. Furthermore, during actual use, the user can easily observe the internal structure of the stove body from the position of the air supply channel 30c. When the guide body 51 of the guide plate 50 is located at the air outlet 30k, the guide body 51 can provide a certain shielding effect on the air supply channel 30c, preventing the user from observing the internal structure of the stove body through the air supply channel 30c, thereby improving the overall aesthetics of the stove. Furthermore, the first connecting leg 53 of the guide body 51 can be an integral structure, for example, by integrally stamping and forming the two. Alternatively, the guide body 51 and the first connecting leg 53 can be separate structures, for example, by being fixedly connected by bonding, snapping, or threading. This facilitates disassembly, maintenance, or replacement of either.

[0567] Among them, the guide body 51 of the guide plate 50 can be constructed as an annular structure, so that an inner ring air supply port 30i and an outer ring air supply port 30j can be constructed in the annular direction respectively, so as to avoid the situation where two adjacent burner units 30 compete with each other for secondary air in the annular direction, and further effectively improve the secondary air supply efficiency to further reduce flue gas emissions.

[0568] Furthermore, a hook is formed on the flow guide body 51, and a slot 1313a is formed on the upper shell 31 or the lower shell 33 of the burner unit 30. The hook can be locked into the slot 1313a to achieve a fixed connection between the flow guide body 51 and the upper shell 31 or the lower shell 33. Of course, the upper shell 31 or the lower shell 33 of the burner unit 30 can also be formed with a hook, and the slot 1313a is formed on the flow guide body 51. Similarly, the hook can be locked into the slot 1313a to achieve a fixed connection between the flow guide body 51 and the upper shell 31 or the lower shell 33. The number of hooks can be multiple, and the multiple hooks are arranged at intervals along the circumference of the flow guide body 51, and the number of hooks corresponds to the number of slots 1313a. The cooperation between the multiple hooks and the multiple slots 1313a further improves the stability of the fixed connection between the flow guide body 51 and the upper shell 31 or the lower shell 33.

[0569] In the exemplary embodiment shown in the figure, the present invention includes at least two first connecting legs 53, which are arranged around the guide body 51. This arrangement further enhances the stability of the connection between the guide plate 50 and the connecting legs 13 and improves the pressure holding effect on the burner unit 30 within the inner ring fire hole 30a. The number of first connecting legs 53 can be two, three, four, or five, etc., without limitation.

[0570] The oil cup 60 can be made of stainless steel or a plate, wherein the oil cup 60 is fixed to the base 11 and is located on the inner side of the inner ring fire hole 30a. A receiving cavity 60a is formed in the oil cup 60. The receiving cavity 60a can collect dirt generated during the cooking process, such as oil, liquid, and debris generated by cooking utensils during cooking, to prevent dirt from entering the stove body. The oil cup 60 can be fixed to the base 11 by directly placing the oil cup 60 inside the base 11. When the receiving cavity 60a of the oil cup 60 needs to be cleaned, the user can directly remove the oil cup 60 from the base 11, which is easy to operate and improves the user experience.

[0571] Thermocouple 70 is composed of two different alloy materials. Different alloy materials generate different thermoelectric potentials under the influence of temperature. When the two conductors of different compositions are connected at both ends to form a circuit, the different temperatures at the junction generate an electromotive force in the circuit. In the event of an abnormal flameout, the thermoelectric potential of thermocouple 70 disappears, and the solenoid valve in the gas pipeline shuts off the gas. During normal use, the continuous thermoelectric potential of thermocouple 70 ensures that the solenoid valve in the gas pipeline remains open and ventilated. In this way, the detection of thermocouple 70 can ensure the safety of users during the use of burner 100, improving fire safety.

[0572] The igniter 71 is used to instantly provide sufficient energy to ignite the mixed air at the inner ring fire hole 30a and the outer ring fire hole 30f to form a flame. When the guide body 51 of the guide plate 50 interferes with the position of the thermocouple 70 and the igniter 71, the guide body 51 can be provided with an escape opening 513 for the thermocouple 70 and the igniter 71 to pass through, allowing the thermocouple 70 and the igniter 71 to extend into the vicinity of the inner ring fire hole 30a of the burner unit 30, thereby realizing the detection function of the thermocouple 70 and the igniter 71.

[0573] The pressure cap 90 can be made of stainless steel or a plate. It is located above at least two burner units 30 and is used to cooperate with the mounting bracket 10 to clamp and secure the at least two burner units 30. In one structural form, the pressure cap 90 includes a cover body 91 and at least two second connecting legs 93 connected to the outer edge of the cover body 91. One second connecting leg 93 is connected to the third fixing portion 1315, and the other second connecting leg 93 is connected to the connecting portion 131, so as to cooperate with the mounting bracket 10 to clamp and secure the burner units 30. This can improve the connection stability between the burner units 30 and the connecting legs 13, preventing the burner units 30 from detaching from the connecting legs 13, which could pose a danger to the user. The cover body 91 can be constructed as an annular structure. After final installation, it can stop the burner units 30 formed with the outer ring fire holes 30f in the annular direction, thereby improving the overall fixing effect of the pressure cap 90 on the burner units 30. At the same time, the structural form of the cover body 91 and the second connecting foot 93 can be an integrated structure, for example, the two are processed and manufactured by an integrated stamping molding method. Of course, the cover body 91 and the second connecting foot 93 can also be a split structure, for example, the two are fixedly connected by bonding, snapping or threaded connection, so that either of them can be easily disassembled, repaired or replaced.

[0574] In the exemplary embodiment shown in the figure, the present invention provides at least two second connecting legs 93, which are arranged around the cover body 91. This at least two second connecting legs 93 further enhance the stability of the connection between the cover body 91 and the connecting legs 13. The number of second connecting legs 93 can be two, three, four, or five, etc., without limitation. For example, referring to FIG. 19 , in this case, there are three second connecting legs 93, which are arranged around the cover body 91. This ensures a relatively small number of second connecting legs 93 while still maintaining the stability of the connection of the mounting bracket 10.

[0575] By connecting a single burner unit 30 to a connecting portion 131 of the mounting bracket 10, the two burner units 30 can enhance the wrapping of the cookware bottom, improve the convective heat transfer coefficient between the cookware bottom and the flame of the burner unit 30, and thus improve the combustion efficiency of the burner 100. Furthermore, a single burner unit 30 can be manufactured separately, such as by forging, eliminating the need for costly one-piece casting, thereby reducing the production cost of the burner 100. When maintenance is required on the ejector tube 35 or burner head 37 within a single burner unit 30 of the at least two burner units 30, only the single burner unit 30 needs to be disassembled for maintenance, facilitating maintenance. Furthermore, the pressure cap 90 cooperates with the mounting bracket 10 to clamp and secure the burner unit 30, further improving the stability of the burner unit 30 mounted on the mounting bracket 10 and reducing the risk of the burner unit 30 detaching from or falling off the mounting bracket 10.

[0576] The burner unit 30 itself has a modular structure, that is, the burner unit 30 has the functions of an ejector, a burner head and a fire distribution cover. When it needs to be disassembled for maintenance or repair, the burner unit 30 can be directly disassembled and assembled at the connection part 131 of the mounting bracket 10, which is easy to operate.

[0577] In addition, a single mounting bracket 10 can be used to assemble the two burner units 30, the guide plate 50, the oil cup 60, the thermocouple 70, the igniter 71 and the pressure cover 90 of the burner 100, thereby reducing the number of mounting structural parts of the burner 100, thereby reducing the number of structures of the burner 100 and making the structure simpler. While reducing production costs, it is also convenient for staff or users to assemble the burner 100 as a whole.

[0578] In an exemplary embodiment, when a user ignites a fire, gas in the gas pipeline enters the burner head 37 through the ejector tube 35 of one burner unit 30 (e.g., the inner ring burner) for gas mixing. The mixed gas then flows out through the inner ring flame hole 30a of the burner head 37. At this time, the igniter 71 first ignites the mixed air flowing out of the inner ring flame hole 30a of the burner head 37 of the inner ring burner to generate an inner ring flame. When the gas in the gas pipeline increases, the gas also enters the burner head 37 through the ejector tube 35 of another burner unit 30 (e.g., the outer ring burner) for gas mixing. The mixed gas then flows out through the outer ring flame hole 30f of the burner head 37. At this time, the igniter 71 first ignites the mixed air flowing out of the outer ring flame hole 30f of the burner head 37 of the outer ring burner to generate an outer ring flame. In this way, the bottom of the cookware is heated by the inner and outer ring flames wrapping around it.

[0579] The technical solution of the present invention is to provide a guide plate 50, and at the air outlet 30k of the air supply channel 30c formed by the burner body, the guide plate 50 will cooperate with the inner wall of the air supply channel 30c to define the inner ring air supply port 30i and the outer ring air supply port 30j that flow toward the inner ring fire hole 30a and the outer ring fire hole 30f respectively. In this way, when the secondary air enters from the air inlet 30d of the air supply channel 30c, under the guiding effect of the guide plate 50, the secondary air will be divided into two sub-air flows, one of which will flow to the inner ring air supply port 30i and finally flow to the inner ring fire hole 30a, while the other will flow to the outer ring air supply port 30j and finally flow to the outer ring fire hole 30f. In this way, the air grabbing situation between the flames generated by the inner ring fire hole 30a and the outer ring fire hole 30f can be reduced, so as to improve the combustion efficiency of the stove and the burner 100.

[0580] To enhance the guiding effect of the guide body 51 on secondary air, in one embodiment, as shown in conjunction with Figures 17 and 18 , the guide body 51 of the guide plate 50 includes an outer edge 515 and an inner edge 517. The outer edge 515 cooperates with the inner wall of the supplementary air passage 30c to define the outer ring supplementary air port 30j, while the inner edge 517 cooperates with the inner wall of the supplementary air passage 30c to define the inner ring supplementary air port 30i. The guide body 51 is tilted downward from the outer edge 515 to the inner edge 517. This tilt allows the secondary air entering the inner ring supplementary air port 30i to flow more smoothly into the inner ring fire hole 30a under the guidance of the guide body 51. Of course, in another structural form, the guide body 51 can be tilted upward in the direction from the outer edge 515 to the inner edge 517, so that the secondary air flow entering the outer ring air supply port 30j can be guided by the guide body 51 and enter the outer ring fire hole 30f located on the outside more smoothly.

[0581] Furthermore, the guide body 51 is tilted downward from the outer edge 515 to the inner edge 517, and a guide surface 511 is formed on the inner side of the guide body 51. To further prevent oil from entering the remaining components of the cooker, the guide surface 511 is used to direct the waste into the base 11 or the oil cup 60 within the base 11. This allows the guide surface 511 to guide waste into the base 11 or the oil cup 60 within the base 11, even if it falls or drips from the cookware. In actual use, the user can place a paper towel or bag on the base 11 to collect the waste, and then simply replace the collected waste paper towel or bag when cleaning is needed, making it convenient. In this way, the guide body 51 not only provides airflow diversion, but also guides waste into the base 11 or the oil cup 60, improving the user experience.

[0582] Furthermore, in the height direction of the burner 100, the flow guide body 51 is located above the inner ring fire hole 30a, and the projection of the inner ring fire hole 30a on a horizontal plane is located within the area of ​​the projection of the flow guide body 51 on the same horizontal plane. Thus, with the arrangement of the flow guide body 51, when waste flows down the height direction of the burner 100, the flow guide body 51 can block the waste, preventing it from flowing into the inner ring fire hole 30a.

[0583] In one embodiment, in the height direction of the burner 100, the distance between the upper surface of the portion of the burner unit 30 forming the inner ring fire hole 30a and the inner edge 517 is greater than 0 mm and less than or equal to 8 mm. This distance is also referred to as H1 shown in Figure 22. When this distance is greater than 0 mm and less than or equal to 8 mm, the burner unit 30 having the inner ring fire hole 30a can fully burn with sufficient secondary air supply, and the overall size of the burner 100 can be prevented from being too large. When this distance is less than or equal to 0 mm, the size of the inner ring air supply port 30i is too small, thereby reducing the flow rate of secondary air entering through the inner ring air supply port 30i, resulting in insufficient oxygen required for the flame burning at the inner ring fire hole 30a. As a result, methane cannot be fully converted into carbon dioxide, and some is converted into carbon monoxide, resulting in excessive carbon monoxide. If this spacing is greater than 8 mm, the overall size of the burner 100 will be too large. Furthermore, if the guide body 51 of the guide plate 50 remains in the same position within the burner 100, the burner unit 30 with the inner ring fire hole 30a will be positioned further away from the bottom of the cookware, thereby affecting the heating effect of the burner unit 30 with the inner ring fire hole 30a on the cookware. For example, the spacing between the upper surface of the portion of the burner unit 30 forming the inner ring fire hole 30a and the inner edge 517 can be 1 mm, 2 mm, 4 mm, 5 mm, or 8 mm, etc., but this is not limited to this in the present invention.

[0584] In the height direction of the burner 100, the distance between the lower surface of the portion of the burner unit 30 forming the outer ring fire hole 30f and the outer edge 515 is greater than 0 mm and less than or equal to 15 mm. This distance is also H2 shown in Figure 22. When this distance is greater than 0 mm and less than or equal to 15 mm, the burner unit 30 formed with the outer ring fire hole 30f can fully burn with sufficient secondary air supply, and the overall size of the burner 100 can be avoided from being too large. When this distance is less than or equal to 0 mm, the size of the outer ring air supply port 30j will be too small, thereby reducing the flow rate of secondary air entering through the outer ring air supply port 30j, resulting in insufficient oxygen required for the flame burning at the outer ring fire hole 30f. As a result, methane cannot be completely converted into carbon dioxide and is partially converted into carbon monoxide, resulting in excessive carbon monoxide. If this spacing is greater than 15 mm, the overall size of the burner 100 will be too large. Furthermore, if the guide body 51 of the guide plate 50 remains in the same position within the burner 100, the burner unit 30 with the outer ring of fire holes 30f will be positioned further away from the bottom of the cookware, thereby affecting the heating effect of the burner unit 30 with the outer ring of fire holes 30f on the cookware. For example, the spacing between the upper surface of the portion of the burner unit 30 forming the outer ring of fire holes 30f and the inner edge 517 can be 1 mm, 3 mm, 5 mm, 7 mm, 9 mm, 12 mm, or 15 mm, etc., but this is not limited to this specification.

[0585] In the radial direction of the burner unit 30, the distance between the end face of the inner ring fire hole 30a and the inner edge 517 is greater than or equal to 0 mm and less than or equal to 5 mm. This distance is L1 shown in Figure 22. When this distance is greater than or equal to 0 mm and less than or equal to 5 mm, the flame at the inner ring fire hole 30a can burn fully. It is understood that the burner unit 30 also forms an inner ring fire outlet located inside the multiple inner ring fire holes 30a. The distance referred to here can be formed by the end face of the inner ring fire hole 30a being closer to the center of the inner ring fire outlet than the inner edge 517, or by the inner edge 517 being closer to the center of the inner ring fire outlet than the end face of the inner ring fire hole 30a. When this distance is greater than 5 mm, the root of the flame burning at the inner ring fire hole 30a may contact the cool guide body 51 of the guide plate 50, resulting in incomplete combustion of the flame and failure to effectively convert carbon monoxide in the flue gas into carbon dioxide, which in turn causes excessive carbon monoxide, adversely affecting the health of the user. Alternatively, when dirt drips, the guide body 51 of the guide plate 50 cannot effectively block the dirt, causing it to drip onto the burner unit 30 formed with the inner ring fire hole 30a. For example, the distance between the end surface of the inner ring fire hole 30a and the inner edge 517 can be 0 mm, 1 mm, 2 mm, 3 mm, 4 mm, or 5 mm, etc., and the present invention is not limited thereto.

[0586] For example, the diameter of the inner ring fire outlet of the burner unit 30 can be 80 mm, and the diameter of the opening surrounded by the inner edge 517 of the guide body 51 of the guide plate 50 can be 80 mm. At this time, the distance between the end face of the inner ring fire hole 30a and the inner edge 517 can be 0 mm.

[0587] In the radial direction of the burner unit 30, the distance between the end face of the outer ring fire hole 30f and the outer edge 515 is greater than or equal to 10 mm and less than or equal to 30 mm. This distance is also L2 shown in Figure 22. When this distance is greater than or equal to 10 mm and less than or equal to 30 mm, the flame at the outer ring fire hole 30f can burn fully. When this distance is less than 10 mm, the opening area of ​​the outer ring air supply port 30j is too small, resulting in a reduction in the flow rate of secondary air entering through the outer ring air supply port 30j. As a result, the amount of oxygen required for the flame burning at the outer ring fire hole 30f is insufficient, and methane cannot be completely converted into carbon dioxide. Instead, some methane is converted into carbon monoxide, resulting in excessive carbon monoxide. When this spacing is greater than 30 mm, while the position and size of the two burner units 30 with the outer ring fire holes 30f remain unchanged, this spacing causes the size of the guide body 51 of the guide plate 50 to decrease. Consequently, the guide body 51 of the guide plate 50 effectively blocks the gap between the two burner units 30 in the height direction of the burner 100, and thus effectively blocks the air supply channel 30c. This makes it easier for the user to observe the internal structure of the stove body through the air supply channel 30c, affecting the overall aesthetics of the stove. For example, the spacing between the end surface of the outer ring fire holes 30f and the outer edge 515 can be 10 mm, 15 mm, 20 mm, 25 mm, or 30 mm, etc., but this is not limited to this in the present invention.

[0588] For example, the burner unit 30 is also formed with an outer ring fire outlet located on the inner side of the multiple outer ring fire holes 30f. The diameter of the outer ring fire outlet can be 120 mm, and the diameter of the opening surrounded by the outer edge 517 of the guide body 51 of the guide plate 50 can be 100 mm. At this time, the distance between the end face of the outer ring fire hole 30f and the outer edge 515 can be 20 mm.

[0589] In one configuration, the oil cup 60 includes a cup body 61 and a handle 63. The cup body 61 is fixed to the base 11. The handle 63 is connected to the cup body 61 and extends away from the base 11. The outer periphery of the handle 63 and the inner sidewall of the cup body 61 define a receiving cavity 60a. To remove the oil cup 60, the user grasps the handle 63 to facilitate access. Specifically, the cup body 61 and the handle 63 can be integrally formed, which improves the connection strength and reduces assembly steps.

[0590] Among them, the junction between the end surface of the handle part 63 facing away from the base body 11 and the outer peripheral surface of the handle part 63 is chamfered. In this way, when the user needs to carry the oil cup 60 and the hand touches the handle part 63, the user's hand will not be scratched by the junction between its end surface and the outer peripheral surface, which ensures the user's safety and further improves the user's experience.

[0591] The outer edge of the main body 61 of the oil cup 60 is formed with a supporting outer edge 65, which is attached to the overlapping edge 111 of the base 11. A first guide surface 651 is formed on the side of the supporting outer edge 65 that is closest to the base 11. The overlapping edge 111 of the base 11 is formed with a second guide surface 1111 that cooperates with the first guide surface 651. During placement, when the oil cup 60 is placed on the base 11, the first guide surface 651 of the supporting outer edge 65 cooperates with the second guide surface 1111 of the base 11, allowing the main body 61 of the oil cup 60 to automatically center itself on the base 11 during placement. This allows, guided by the guide surface 511 formed on the inner side of the diversion body 51, to more accurately direct waste into the receiving cavity 60a of the oil cup 60, facilitating operation and further enhancing the user experience. Among them, the support outer edge 65 can be constructed as an annular structure, so that when the oil cup 60 is placed on the seat body 11, the support outer edge 65 can be circumferentially abutted against the overlapping edge 111 of the seat body 11 in the annular direction, so that the stability of the oil cup 60 placed on the seat body 11 can be further improved.

[0592] In one embodiment, referring to FIG. 19 , a mounting boss is further formed on the connecting rib 15 , and an inclined surface is formed on the mounting boss. The second fixing portion 151 is disposed on the inclined surface of the mounting boss, so that when the fixing bracket 73 is connected to the second fixing portion 151, the thermocouple 70 and the igniter 71 mounted on the fixing bracket 73 can be arranged obliquely upward and pass through the avoidance opening 513. Thus, with the inclined surface disposed, during installation, the thermocouple 70 and the igniter 71 can be inserted obliquely between the guide body 51 of the guide plate 50 and the inner ring burner. This facilitates installation of the thermocouple 70 and the igniter 71 within the burner 100 by the operator, further improving installation efficiency.

[0593] The inclined surface of the mounting boss on the connecting rib 15 also has a positioning protrusion 153, and the fixing bracket 73 is provided with a positioning hole that is positioned and matched with the positioning protrusion 153. In this way, the fixing bracket 73 can be pre-fixed on the connecting rib 15 through pre-positioning and matching, and then the second fixing portion 151 is connected to the fixing bracket 73 to achieve the final fixed connection between the fixing bracket 73 and the connecting rib 15, thereby ensuring the accuracy of the relative position of the fixing bracket 73 when connected to the connecting rib 15. Of course, the fixing bracket 73 can also have a positioning protrusion 153, and the inclined surface of the mounting boss on the connecting rib 15 is provided with a positioning hole that is positioned and matched with the positioning protrusion 153. In this way, the fixing bracket 73 can also be pre-fixed on the connecting rib 15 through the positioning and matching of the positioning protrusion 153 and the positioning hole. Among them, the number of positioning protrusions 153 can be one or more (for example, two, three, four or five, etc.), and the number of positioning holes can correspond to the number of positioning protrusions 153. When the number of positioning protrusions 153 is multiple, the accuracy of positioning setting can be improved, and the positioning effect can be further improved. There is no specific limitation on this.

[0594] In the scheme exemplarily shown in the figure, the fixed bracket 73 includes a bracket body 731 and two clamping springs 733, the bracket body 731 is connected to the second fixing part 151, and the two clamping springs 733 are connected to the bracket body 731, one of the clamping springs 733 is used to clamp or release the thermocouple 70, and the other clamping spring 733 is used to clamp or release the igniter 71. During the actual installation process, a clamping space is formed within the clamping spring 733. When clamping or releasing the thermocouple 70 and the igniter 71, the clamping spring 733 will elastically deform under the contact of the thermocouple 70 and the igniter 71, causing the clamping space to expand or shrink. That is, during the clamping process, the clamping space will first expand, allowing the thermocouple 70 and the igniter 71 to enter the clamping space. When the thermocouple 70 and the igniter 71 gradually enter the clamping space, the clamping space will shrink, achieving the clamping of the thermocouple 70 and the igniter 71. During the release process, the clamping space will first expand, and when the thermocouple 70 and the igniter 71 gradually leave the clamping space, the clamping space will gradually shrink. Of course, the thermocouple 70 and the igniter 71 can be connected to the fixing bracket 73 by bonding, which is not limited to this. Among them, the material of the clamping spring 733 can be a metal material or a plastic material with a certain elastic deformation. When the clamping spring 733 is made of metal, the metal material has the advantages of a high melting point, burning resistance and greater strength to achieve the clamping stability of the thermocouple 70 or the igniter 71, and there is no limitation on this.

[0595] The above description describes the advantages of the burner 100 of the present invention in terms of the structural form of the guide plate 50, resulting in higher combustion efficiency. Furthermore, referring to Figures 17 to 19 , to ensure secure attachment of the mounting bracket 10 to the burner unit 30, the ejector tube 35 is connected to one connecting leg 13 via a connecting portion 131, and the burner head 37 is connected to the remaining connecting leg 13 via a connecting portion 131. This arrangement improves the overall support stability of the burner unit 30 by securely connecting the ejector tube 35 and the burner head 37 of the burner unit 30. During the actual installation process, the connection between the connecting part 131 connected to the ejector tube part 35 and the ejector tube part 35 may be a fixed connection method, such as a threaded connection or a pin connection, while the connection between the connecting part 131 connected to the burner head part 37 and the burner head part 37 may be a non-fixed connection method, such as a snap connection, overlap connection, and other non-fixed connection methods (when it is a snap connection method, the connecting part 131 connected to the burner head part 37 is also a slot 1313a, and part of the structure of the burner head part 37 is snapped into the slot 1313a to achieve a snap connection; and when it is an overlap connection method, the connecting part 131 connected to the burner head part 37 is also a step, and part of the structure of the burner head part 37 is overlapped on the step to achieve an overlap connection). In this way, the support and fixation of the burner unit 30 by the connecting leg 13 of the mounting bracket 10 can be ensured while reducing the cumbersome assembly steps and improving the assembly efficiency. Of course, the connection between the connecting portion 131 connected to the ejection tube portion 35 and the ejection tube portion 35 and the connection between the connecting portion 131 connected to the furnace head portion 37 and the furnace head portion 37 can both be fixed connections to further improve the support fixation.

[0596] In one structural form, the ejector tube portion 35 includes an ejector tube 351 and a mounting edge 353. The ejector tube 351 forms an ejection channel that connects to the inner ring fire holes 30a or the outer ring fire holes 30f, and the mounting edge 353 is connected to the outer edge of the ejector tube 351. The burner head portion 37 includes a combustion ring 371 and a skirt 373. The combustion ring 371 is provided with a combustion channel that connects to the inner ring fire holes 30a or the outer ring fire holes 30f, and the skirt 373 is arranged around the outer edge of the combustion ring 371. It can be understood that the ejector channel is connected to the gas channel and jointly defines the above-mentioned gas channel 30h. In the ejector channel, primary air is sucked in from the entrance of the ejector channel and mixed with the gas in the ejector channel. Then the diffuser section in the ejector channel increases the pressure of the mixed gas, so that the gas and air in the mixed gas are further mixed. Then the mixed gas will flow to the combustion channel again. The annular combustion channel distributes the mixed gas in an annular shape and then flows out from the inner ring fire hole 30a or the outer ring fire hole 30f to be ignited by the igniter 71, thereby achieving the effect of an annular flame, so as to heat the cooker in an annular direction and better wrap the cooker.

[0597] The connecting portion 131 includes a first connecting portion 1311, which is provided on the connecting leg 13 corresponding to the ejector tube portion 35, and a second connecting portion 1313, which is provided on the connecting bracket corresponding to the burner head portion 37. The mounting edge 353 is fixedly connected to the first connecting portion 1311, enabling the ejector tube portion 35 to be secured to the first connecting portion 1311 of the connecting leg 13. The skirt 373 is fixedly connected to the second connecting portion 1313, thereby providing a fixed connection between the burner head portion 37 and the second connecting portion 1313. In this way, the extended mounting edge 353 and skirt 373 respectively achieve a fixed connection with the first connecting portion 1311 and the second connecting portion 1313, without affecting the inherent structure of the ejector tube 351 of the ejector tube portion 35 and the combustion ring 371 of the burner head portion 37.

[0598] Furthermore, the first connection portion 1311 is a first connection hole 1311a provided on the connection leg 13, and the mounting edge 353 is provided with a second connection hole 3531. The mounting edge 353 and the connection leg 13 are fixedly connected by a fastener (not shown) that cooperates with the first connection hole 1311a and the second connection hole 3531. For example, the fastener can be a threaded member, and the first connection hole 1311a and the second connection hole 3531 can both be threaded holes. The fastener sequentially penetrates the first connection hole 1311a and the second connection hole 3531 to achieve a threaded fixed connection between the mounting edge 353 and the connection leg 13. Of course, the fastener can also be a fastening pin, for example, by inserting the fastening pin into the first connection hole 1311a and the second connection hole 3531 to achieve a fixed connection between the mounting edge 353 and the connection leg 13. The type of fastener is not specifically limited here, and can be selected based on actual connection strength requirements and cost.

[0599] The second connection portion 1313 is a slot 1313a formed on the connecting leg 13, and the skirt 373 is snapped into the slot 1313a to connect the skirt 373 and the connecting leg 13. During the actual installation process, the skirt 373 can be first snapped into the slot 1313a to pre-install the burner unit 30 on the connecting leg 13 of the mounting bracket 10. The burner unit 30 and the connecting leg 13 are then finally connected by fixing the first connection portion 1311 to the mounting edge 353. This is convenient and can appropriately reduce the number of assembly steps, while ensuring the stability of the connection between the two and improving assembly efficiency. Of course, the first connection portion 1311 can also be a slot 1313a, and the second connection portion 1313 can be a connection hole, or both the first connection portion 1311 and the second connection portion 1313 can be connection holes, and this is not limited to this.

[0600] In one embodiment, the liquid receiving pan is formed with an opening, and a limit rib 911 is formed on the cover body 91 of the pressure cover 90, which protrudes in a direction away from the burner unit 30. The limit rib 911 is provided through the opening and is used to stop and limit the side wall surface of the opening. With this arrangement, when the position of the liquid receiving pan is shifted or the liquid receiving pan is installed, the side wall surface of the opening can be stopped and limited by the limit rib 911 to prevent the liquid receiving pan from shifting too much, thereby achieving a limiting effect. In addition, during the installation process, the limit rib 911 can also serve as a reference for the installation position. By having the limit rib 911 pass through the opening, the approximate installation position of the liquid receiving pan can be determined, thereby facilitating installation.

[0601] In one structural form, the limiting rib 911 is annular. Thus, the limiting rib 911 can provide a limiting fit for the liquid receiving pan in the annular direction, thereby limiting the position of the liquid receiving pan in the annular direction. Of course, the limiting rib 911 can also be a structural form comprising multiple sub-ribs, with the multiple sub-ribs spaced apart along the circumference of the cover body 91 of the gland 90. The cooperation of the multiple sub-ribs with the liquid receiving pan can also provide a limiting effect on the liquid receiving pan in the annular direction, reduce the production materials of the liquid receiving pan, and reduce the production cost of the liquid receiving pan to a certain extent. This is not limited to this.

[0602] The joint between the limiting rib 911 and the cover body 91 of the pressure cover 90 has a smooth transition. This setting can reduce the sharpness of the joint so that users or staff will not be scratched when touching the joint, thereby improving the user experience and ensuring safety.

[0603] In an exemplary actual assembly process, the assembly process may be as follows: first, the mounting bracket 10 is fixedly connected to the bottom of the stove body (for example, by a connecting piece and the first fixing hole of the mounting bracket 10 and the second fixing hole of the stove body). After the mounting bracket 10 and the bottom of the stove body are installed, the oil cup 60 may be placed on the base 11 of the mounting bracket 10, and then the inner ring burner of the two burner monomers 30 may be installed on the connecting legs 13 of the mounting bracket 10 (for example, the inner ring burner is respectively connected to the first connection part 1311 and the second connection part 1313 of the connection part 131 in the mounting bracket 10), and then the igniter 71 and the thermocouple 70 are respectively installed on the fixing bracket 73 (for example, the igniter 71 and the thermocouple 70 are installed on their respective The igniter 71 and the thermocouple 70 are clamped and fixed on the clamping spring piece 733), and then the fixing bracket 73 is fixedly connected to the connecting rib 15 (for example, the pre-positioning setting is first achieved through the positioning hole of the fixing bracket 73 and the positioning protrusion 153 of the mounting boss of the connecting rib 15, and then the fixing bracket 73 is fixedly connected to the second fixing portion 151 of the connecting rib 15). After the fixing bracket 73 is installed, the deflector 50 is installed on the first fixing portion 13 of the connecting leg 13 of the mounting bracket 10. The outer ring burner of the two burner monomers 30 is mounted on the connecting legs 13 of the mounting bracket 10 (for example, the outer ring burner is respectively connected to the first connecting portion 1311 and the second connecting portion 1313 of the connecting portion 131 in the mounting bracket 10), wherein the inner ring burner and the outer ring burner are spaced apart in the extending direction of the connecting legs 13 so that there is a height difference between the two, that is, the outer ring burner is spaced apart in the extending direction of the connecting legs 13. The burner is located above the inner ring burner. After the outer ring burner is installed, the pressure cover 90 is finally installed on the third fixing part 1315 of the connecting leg 13 (for example, the second connecting leg 93 of the pressure cover 90 is fixedly connected to the third fixing part 1315), so that the cover body 91 of the pressure cover 90 presses against the outer ring burner, and finally the liquid receiving pan is placed above the pressure cover 90. In this way, the installation of the burner 100 and the stove body in the stove embodiment of the present invention and the complete installation process of the burner 100 itself can be realized, and the installation is convenient and quick.

[0604] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A burner assembly, characterized in that: include: A first burner, the first burner is annular and has a first fire hole formed on the inner periphery; The second burner is annular and has a second fire hole formed on the inner periphery. The second burner is arranged above the first burner, and the inner diameter of the second burner is larger than that of the first burner.

2. The burner assembly according to claim 1, characterized in that The inner diameter of the second burner is 1.2 to 2.5 times the inner diameter of the first burner.

3. The burner assembly according to claim 2, characterized in that The inner diameter of the second burner is 1.5 times the inner diameter of the first burner.

4. The burner assembly according to any one of claims 1 to 3, characterized in that: The first burner includes a first lower plate, a first upper plate arranged on the first lower plate, and a first partition plate, the first lower plate is formed with a first lower hole, the first upper plate is formed with a first upper hole corresponding to the first lower hole, the first lower hole and the first upper hole form the first fire hole, the first partition plate is arranged between the first lower plate and the first upper plate, and separates the first lower hole from the first upper hole; The depth direction of the first fire hole forms an angle θ1 with the plane where the first upper plate is located, and the range of the angle θ1 is (0°, 90°).

5. The burner assembly according to claim 4, characterized in that The range of the angle θ1 is (0°, 60°).

6. The burner assembly according to claim 4, characterized in that The angle θ1 is 40°.

7. The burner assembly according to any one of claims 1 to 6, characterized in that: The second burner comprises a second lower plate, a second upper plate and a second partition plate arranged on the second lower plate, the second lower plate is formed with a second lower hole, the second upper plate is formed with a second upper hole corresponding to the second lower hole, the second lower hole and the second upper hole form the second fire hole, and the second partition plate is arranged between the second lower plate and the second upper plate and separates the second lower hole from the second upper hole; The depth direction of the second fire hole forms an angle θ2 with the plane where the second upper plate is located, and the range of the angle θ2 is (0°, 90°).

8. The burner assembly according to claim 7, characterized in that The range of the θ2 angle is (0°, 60°).

9. The burner assembly according to claim 7, characterized in that The angle θ2 is 40°.

10. The burner assembly according to any one of claims 1 to 9, characterized in that: There is a first height difference between the first fire hole and the second fire hole, and the range of the first height difference is (15mm, 40mm).

11. The burner assembly according to any one of claims 1 to 10, characterized in that: There is a first height difference between the first fire hole and the second fire hole, and the range of the first height difference is (20 mm, 30 mm).

12. The burner assembly according to any one of claims 1 to 11, characterized in that: There is a first height difference between the first fire hole and the second fire hole, and the first height difference is 23.65 mm.

13. The burner assembly according to any one of claims 1 to 12, characterized in that: The depth direction of the first fire hole is inclined relative to the radial direction of the first burner to form a first deflection angle, and the range of the first deflection angle is (0, 45°).

14. The burner assembly according to any one of claims 1 to 13, characterized in that: The depth direction of the first fire hole is inclined relative to the radial direction of the first burner to form a first deflection angle, and the range of the first deflection angle is (0, 30°).

15. The burner assembly according to any one of claims 1 to 14, characterized in that The depth direction of the first fire hole is inclined relative to the radial direction of the first burner to form a first deflection angle, and the first deflection angle is 30°.

16. The burner assembly according to any one of claims 1 to 15, characterized in that The depth direction of the second fire hole is inclined relative to the radial direction of the second burner to form a second deflection angle, and the range of the second deflection angle is (0, 45°).

17. The burner assembly according to any one of claims 1 to 16, characterized in that The depth direction of the second fire hole is inclined relative to the radial direction of the second burner to form a second deflection angle, and the range of the second deflection angle is (0, 30°).

18. The burner assembly according to any one of claims 1 to 17, characterized in that The depth direction of the second fire hole is inclined relative to the radial direction of the second burner to form a second deflection angle, and the second deflection angle is 30°.

19. The burner assembly according to any one of claims 1 to 18, characterized in that The burner assembly includes a guide plate, which is arranged between the first burner and the second burner. There is a second height difference between the guide plate and the top of the first fire hole, and there is a third height difference between the guide plate and the bottom of the second fire hole. The third height difference is greater than the second height difference.

20. The burner assembly according to claim 19, characterized in that The range of the second height difference is (0, 8 mm).

21. The burner assembly according to claim 20, characterized in that The second height difference is 5 mm.

22. The burner assembly according to any one of claims 19 to 21, characterized in that The range of the third height difference is (0, 15 mm).

23. The burner assembly according to claim 22, characterized in that The third height difference is 9 mm.

24. The burner assembly of claim 4, wherein: The first lower plate is concave to form a first lower channel, and the first upper plate is convex to form a first upper channel; and The first lower hole and the first upper hole are opposite to each other to form a first fire hole of the first burner.

25. The burner assembly of claim 7, wherein: The second lower plate is concave to form a second lower channel, and the second upper plate is convex to form a second upper channel; and The second lower hole channel and the second upper hole channel are opposite to each other to form a second fire hole of the second burner.

26. The burner assembly of claim 24, wherein: A first fire transfer gap is formed between the first upper plate and the first partition plate, and the first fire transfer gap communicates with two adjacent first fire holes.

27. The burner assembly of claim 25, wherein: A second fire transfer gap is formed between the second upper plate and the second partition plate, and the second fire transfer gap communicates with two adjacent second fire holes.

28. The burner assembly according to any one of claims 1 to 27, wherein: The burner assembly also includes an ignition module, which includes an ignition needle, a thermocouple and a first bracket. The ignition needle and the thermocouple are fixed on the first bracket. The ignition module is configured so that the ignition needle is arranged close to the first fire hole.

29. The burner assembly according to any one of claims 1 to 28, wherein: Each of the first burner and the second burner comprises: A burner body, wherein a gas passage is formed inside, and an inner ring fire hole and an outer ring fire hole are respectively connected to the gas passage, wherein the outer ring fire hole is arranged outside the inner ring fire hole, and the burner body is further formed with an air supplement channel independent of the gas passage, wherein the air supplement channel includes an air inlet located on the outer side wall of the burner body and an air outlet located between the inner ring fire hole and the outer ring fire hole; and The guide plate is arranged at the air outlet and cooperates with the inner wall of the air supply channel to define an inner ring air supply port and an outer ring air supply port for respectively flowing toward the inner ring fire hole and the outer ring fire hole.

30. A cooking appliance, characterized in that: The cooker comprises the burner assembly according to any one of claims 1-29.

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