Burner and cooking utensil

Abstract

The utility model discloses a burner and a cooking utensil with the burner, and relates to the technical field of electrical equipment, the burner comprises a plurality of fire holes, a distribution flow channel and an ejection flow channel, the plurality of fire holes are distributed along a first direction, the distribution flow channel and the plurality of fire holes are distributed along a second direction, and the ejection flow channel is communicated with the distribution flow channel. The ejection flow channel extends in the first direction, the ejection flow channel and the distribution flow channel are distributed in the first direction, an outlet of the ejection flow channel is communicated with the distribution flow channel, and the first direction is perpendicular to the second direction. According to the combustor provided by the embodiment of the utility model, the injection flow channel and the distribution flow channel are arranged along the first direction, so that the size of the combustor along the second direction can be shortened, the structure compactness of the combustor is favorably improved, and the spatial arrangement is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical equipment, especially to a burner and a cooking utensil with the burner. BACKGROUND

[0002] The oven is a kind of equipment that high temperature is used to the food cooking, it is usually divided into electric oven and gas oven according to the type of heat source, wherein electric oven uses the heat generated by electric heating tube to heat food, and gas oven heats food by the heat generated by burning.

[0003] In the related art, the gas oven has a burner, which is generally composed of an air inlet, an injection pipe, a distribution section and a fire hole. The injection pipe is usually connected near the center of the distribution section along the length direction of the burner to facilitate distribution, but the flow distribution part is installed above the injection pipe, which increases the height of the burner. In addition, the pipe or rod structure can be made lower, but its disadvantage is that the protruding part of the throat is longer than the fire hole, so this part needs additional space, resulting in a larger occupied space, which is not conducive to space arrangement. SUMMARY

[0004] The utility model aims at at least one of the technical problems in the related art to some extent. To this end, one purpose of the utility model is to provide a burner, which can shorten the size of the burner along the second direction, facilitate to improve the structural compactness of the burner and facilitate space arrangement.

[0005] Another purpose of the utility model is to provide a cooking utensil comprising the aforementioned burner.

[0006] According to the burner of the utility model embodiment, the burner comprises a plurality of fire holes, a distribution flow channel and an injection flow channel, the plurality of fire holes are distributed along a first direction, the distribution flow channel and the plurality of fire holes are distributed along a second direction, the injection flow channel extends along the first direction and is distributed along the first direction with the distribution flow channel, and the outlet of the injection flow channel communicates with the distribution flow channel.

[0007] According to the burner of the utility model embodiment, by arranging the injection flow channel and the distribution flow channel along the first direction, the size of the burner along the second direction can be shortened, the structural compactness of the burner is facilitated to be improved, and space arrangement is facilitated.

[0008] In addition, the burner according to the above embodiment of the utility model can also have the following additional technical features:

[0009] In some examples of the utility model, the inlet end of the injection flow channel protrudes from the end of the plurality of fire holes along the first direction, and the other end is distributed along the second direction with the plurality of fire holes.

[0010] In some examples of the present application, the burner comprises a main body and an ejector pipe, the plurality of fire holes and the distribution flow channel are arranged in the main body, the ejector flow channel is arranged in the ejector pipe, and at least a portion of the ejector pipe extends out of the end of the main body along the first direction.

[0011] In some examples of the present application, the main body has a dimension value A along the first direction, and the maximum dimension B of the main body and the ejector pipe along the second direction satisfies B / A<0.35.

[0012] In some examples of the present application, the ejector flow channel comprises an incident section, a throat section and an ejector section, the incident section is arranged as a converging flow channel extending to the throat section along the first direction, the ejector section is arranged as a diverging flow channel with one end connected to the throat section and extending along the first direction, and the other end of the ejector section is connected to the distribution flow channel, wherein the dimension value L313 of the entrance end of the incident section along the third direction is less than the dimension value L312 along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0013] In some examples, at least one side of the entrance end of the incident section along the third direction is arranged as a first flat portion, and the distance between the middle of the first flat portion along the second direction and the axis of the ejector flow channel is less than the distance between the end and the axis of the ejector flow channel.

[0014] In some examples, the first flat portion is arranged as a straight section or an arc-shaped section extending along the second direction.

[0015] In some examples, the entrance end of the incident section comprises a first side, a second side, a third side and a fourth side connected in sequence around the axis of the ejector section, the first side and the third side are arranged opposite to each other along the second direction, the second side and the fourth side are arranged opposite to each other along the third direction, and the first side and / or the third side is arranged as an arc surface with the middle part protruding outward along the second direction.

[0016] In some examples, the first side and / or the third side is arranged as a first circular arc surface with the axis of the ejector section as the center,

[0017] wherein the second side and / or the fourth side is arranged as a flat surface; or, the second side and / or the fourth side is arranged as a second circular arc surface, and the diameter size of the second circular arc surface is greater than the diameter size of the first circular arc surface.

[0018] In some examples, the entrance end of the incident section is arranged as an elliptical shape with the long axis extending along the second direction and the short axis extending along the third direction.

[0019] Or, the entrance end of the incident section is a rectangle.

[0020] In some embodiments, a ratio of the size value L312 to the size value L313 satisfies 1

[0021] And / or, a ratio of the size value L312 to a diameter size value D1 of the throat satisfies 3≤(L312 / D1)2≤3.5.

[0022] In some embodiments, a second flat portion is arranged on at least one side of the gas collection cavity along the third direction, and the second flat portion does not protrude the incident section in the projection along the first direction.

[0023] In some embodiments, a size value of the incident section along the first direction is L311, a size value of the throat along the first direction is L321, a size value of the injection section along the first direction is L331, and a diameter size value of the throat is D1,

[0024] Wherein, 4≤(L331+L321) / D1≤6; or, 1≤L311 / D1≤2.

[0025] In some examples of the utility model, the distribution flow channel comprises a first part and a second part, the first part and the second part are distributed along the first direction, the first part is provided with a boss, and the boss is close to the fire hole.

[0026] In some examples of the utility model, the first part comprises a flow guide portion, and the boss and the flow guide portion are distributed along the second direction.

[0027] In some examples of the utility model, the distribution flow channel has a first side surface opposite to the plurality of fire holes, the boss comprises a second side surface opposite to the first side surface, the second side surface comprises a first guide surface, an end portion of the first guide surface extends to an edge of the first part close to the second part, and the first guide surface gradually reduces the spacing with the first side surface in the direction away from the injection flow channel.

[0028] In some examples of the utility model, an included angle between the first guide surface and the first direction is greater than or equal to 0 and less than or equal to 10°.

[0029] In some examples of the utility model, the first guide surface is parallel to the first direction.

[0030] In some examples of the present application, the first side surface extends along the first direction and is inclined towards the plurality of fire holes in a direction away from the ejector flow channel.

[0031] In some examples of the present application, the second side surface further comprises a second guide surface, the second guide surface is closer to the ejector flow channel than the first guide surface, and the distance between the first side surface and the second guide surface gradually decreases in a direction away from the ejector flow channel.

[0032] In some examples of the present application, the angle between the second guide surface and the first direction is greater than or equal to 0 and less than or equal to 10°.

[0033] In some examples of the present application, the first guide surface and the second guide surface are parallel.

[0034] In some examples of the present application, the second guide surface is parallel to the first direction.

[0035] In some examples of the present application, the distance between the second guide surface and the plurality of fire holes is greater than the distance between the first guide surface and the plurality of fire holes, and the second side surface further comprises a third guide surface connected between the first guide surface and the second guide surface.

[0036] In some examples of the present application, the third guide surface is provided as an inclined plane gradually away from the second side surface in a direction away from the ejector flow channel.

[0037] In some examples of the present application, the third guide surface is provided as an arc surface gradually away from the second side surface in a direction away from the ejector flow channel.

[0038] In some examples of the present application, the angle between the third guide surface and the first direction is greater than or equal to 30° and less than or equal to 60°.

[0039] In some examples of the present application, the angle between the first side surface and the first direction is greater than or equal to 5° and less than or equal to 15°.

[0040] In some examples of the present application, the combustor further comprises a communication groove, the communication groove extends along the first direction and communicates with the plurality of fire holes.

[0041] In some examples of the present application, the distribution flow channel comprises a first flow channel, a second flow channel and a third flow channel in communication with each other, the first flow channel is opposite to the boss along a third direction, the first flow channel is arranged between the second flow channel and the communication groove, and the third flow channel is arranged on a side of the second flow channel away from the ejector flow channel and is distributed with the communication groove along the second direction.

[0042] In some examples of the present application, the first flow channel has a dimension value L31 along the third direction, the second flow channel has a dimension value L32 along the third direction, the third flow channel has a dimension value L33 along the third direction, and the communication groove has a dimension value L34 along the third direction, wherein L31 < L32; and / or, L31 < L33; and / or, L31 < L34; and / or, L34 < L32; and / or, L34 < L33.

[0043] In some examples of the present application, the combustor further comprises a gas collecting cavity, which is arranged between the ejector flow channel and the distribution flow channel and communicates the ejector flow channel, the first flow channel, the second flow channel and the communication groove.

[0044] In some examples of the present application, the gas collecting cavity has a dimension value L35 along the third direction, the first flow channel has a dimension value L31 along the third direction, the second flow channel has a dimension value L32 along the third direction, and the communication groove has a dimension value L34 along the third direction, wherein L31 < L35; and / or, L32 < L35; and / or, L34 < L35; and / or, L34 < L33; and / or, L34 < L32.

[0045] The cooking appliance according to the embodiments of the present application comprises the aforementioned combustor, a gas supply assembly and an igniter, the gas supply assembly provides gas to the ejector flow channel, and the igniter is arranged on the combustor and is adapted to ignite the gas of the combustor.

[0046] The cooking appliance according to the embodiments of the present application, by applying the aforementioned combustor on the cooking appliance, can shorten the dimension of the combustor along the second direction, improve the structural compactness of the combustor, facilitate space arrangement, and thus improve the structural compactness of the cooking appliance. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 is a structural schematic view of the combustor in some embodiments of the present application;

[0048] Figure 2 is a sectional view of the combustor in some embodiments of the present application;

[0049] Figure 3 is a sectional view of the combustor in some embodiments of the present application (showing the first flow channel, the second flow channel, the communication groove and the gas collecting cavity);

[0050] Figure 4 is a sectional view of the combustor in some embodiments of the present application (showing the third flow channel and the gas collecting cavity);

[0051] Figure 5 is a structural schematic view of the burner in some embodiments of the utility model;

[0052] Figure 6 is a partial structural schematic view of the cooking utensil in some embodiments of the utility model;

[0053] Figure 7 is a structural schematic view of the cooking utensil in some embodiments of the utility model;

[0054] Figure 8 is a structural schematic view of the cooking utensil in some embodiments of the utility model.

[0055] Reference signs:

[0056] 1000, cooking utensil; 100, burner; 10, main body part; 101, fire hole; 103, positioning hole; 20, distribution flow channel; 201, first flow channel; 202, second flow channel; 203, third flow channel; 21, first part; 211, boss; 220, second side wall; 221, first guide surface; 222, second guide surface; 223, third guide surface; 212, flow guide part; 22, second part; 23, third part; 24, first side wall; 30, ejector pipe; 301, ejector flow channel; 31, incident section; 31a, inlet end; 311, first side surface; 312, second side surface; 313, third side surface; 314, fourth side surface; 315, first flat part; 32, throat part; 33, ejector section; 40, gas collection cavity; 41, second flat part; 50, communication groove; 31a, inlet end; 303, outlet end; 40, gas collection cavity; 401, flow distribution part; 11, first half part; 12, second half part; 200, machine body; 210, cooking cavity; 220, combustion chamber; 300, fan; 400, gas supply assembly; 500, support frame; first direction X, second direction Z, third direction Y. DETAILED DESCRIPTION

[0057] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as a limitation of the utility model.

[0058] In combination Figure 1 and Figure 2According to the burner 100, the plurality of fire holes 101 are distributed along a first direction, the fire holes 101 are used for spraying and igniting mixed gas to form a flame, and the plurality of fire holes 101 can realize heating in the first direction. Specifically, the distribution flow channel 20 and the plurality of fire holes 101 are distributed along a second direction, the distribution flow channel 20 can be arranged corresponding to the plurality of fire holes 101 along the second direction, so as to facilitate gas supply to the plurality of fire holes 101. The injection flow channel 301 extends along the first direction and is distributed along the first direction with the distribution flow channel 20, and the outlet of the injection flow channel 301 communicates with the distribution flow channel 20. Air and gas can enter the injection flow channel 301 and mix in the injection flow channel 301, and enter the distribution flow channel 20 from the outlet of the injection flow channel 301, so that when ignition, the plurality of fire holes 101 can react with the mixed gas in the distribution flow channel 20, forming a flame extending along the first direction.

[0059] Specifically, the first direction can be the length direction of the burner 100, the second direction can be the height direction of the burner 100, the distribution flow channel 20 can be arranged below the plurality of fire holes 101, so that the gas in the distribution flow channel 20 can better enter the fire hole 101, and the injection flow channel 301 and the distribution flow channel 20 are distributed along the length direction, which can shorten the size of the burner 100 along the second direction or the height direction, and facilitate the injection flow channel 301 to directly communicate with the distribution flow channel 20, and improve the structural compactness of the burner 100.

[0060] According to the burner 100, by arranging the injection flow channel 301 and the distribution flow channel 20 along the first direction, the size of the burner 100 along the second direction can be shortened, the structural compactness of the burner 100 is improved, and space arrangement is facilitated.

[0061] In combination Figure 1 And Figure 2 In some embodiments of the utility model, the inlet end 302 of the injection flow channel 301 extends beyond the end of the plurality of fire holes 101 along the first direction, which can lengthen the injection flow channel 301, improve the gas inlet effect and gas mixing effect.

[0062] Referring to Figure 2 The first direction X can be the length direction of the burner 100, and the second direction Y can be the height direction of the burner 100.

[0063] In combination Figure 1In some embodiments of the utility model, burner 100 includes main part 10 and ejector pipe 30, multiple fire holes 101 and distribution flow channel 20 are arranged in main part 10, and ejector flow channel 301 is arranged in ejector pipe 30, at least a part of ejector pipe 30 extends the end of main part 10 along the first direction, can facilitate the inlet of ejector pipe 30 and the cooperation of gas supply assembly 200, benefitting the appropriate lengthening of the length of ejector pipe 30. Wherein, the length of ejector pipe 30 can be determined according to gas consumption (or heat load), so that the combustion effect of burner 100 can be improved.

[0064] In some embodiments of the utility model, the size value of main part 10 along the first direction is A, and the maximum size of main part 10 and ejector pipe 30 along the second direction is B, satisfying B / A < 0.35, so that the size of burner 100 along the second direction can be reduced, and the structural compactness of burner 100 can be improved. When burner 100 is applied to cooking utensil 1000, the size of burner 100 along the second direction is smaller, the size of the heating space above burner 100 can be increased, or the space occupied by burner 100 can be reduced, so that the size of cooking utensil 1000 can be reduced. For example, the ratio of the maximum size of main part 10 and ejector pipe 30 along the second direction to the size of multiple fire holes 101 along the first direction can be 0.3, 0.2, etc. Preferably, B / A is 0.25.

[0065] Specifically, multiple fire holes 101 extend along the length direction, distribution flow channel 20 is arranged below multiple fire holes 101 along the height direction, multiple fire holes 101 and distribution flow channel 20 are arranged in main part 10, and ejector pipe 30 is connected with main part 10 along the length direction, and a part of ejector pipe 30 overlaps with main part 10 along the first direction or the length direction. In other words, in the first direction, a part of ejector pipe 30 is arranged in main part 10, and the other part extends out of main part 10, so that when arranging ejector pipe 30, the space in the second direction of main part 10 can be fully utilized, so that the pipe body part of ejector pipe 30 can be located on main part 10, so as to reduce the maximum size in the second direction of main part 10 and ejector pipe 30 after being connected under the condition of ensuring the length of ejector pipe 30. Therefore, the maximum height size of burner 100 is the height size of main part 10 and the size of ejector pipe 30 exceeding main part 10 along the second direction. In the related art, the ejector pipe is directly connected below the burner main body, so the height size of the burner in the related art is the sum of the height size of the burner main body and the height size of the ejector pipe as a whole, so the overall height size of the burner is large, and the structural compactness is poor.

[0066] In combination Figure 1The inlet end 302 of the ejector pipe 30 extends out of the main body 10, and the outlet end 303 of the ejector pipe 30 is communicated with the distribution flow channel 20 in the main body 10. The outlet end 303 of the ejector pipe 30 can be communicated with the fire hole 101 in the second direction to realize gas supply, and the ejector pipe 30 is communicated with the distribution flow channel 20 in the first direction, so that the mixed gas can continue to be transported away from the ejector pipe 30, thereby realizing the structural optimization of the burner 100 and improving the combustion effect of the burner 100.

[0067] In some embodiments of the utility model, the distribution flow channel 20 includes a first part 21 and a second part 22, the first part 21 and the second part 22 are distributed in the first direction, the first part 21 is provided with a boss 211 and a flow guide part 212, the boss 211 and the flow guide part 212 are distributed in the second direction, and the boss 211 is close to the fire hole 101 relative to the flow guide part 212. That is, the gas at the outlet end 303 of the ejector flow channel 301 can first enter the first part 21 and then be transported to the second part 22.

[0068] Specifically, since the gas flow at the outlet end 303 of the ejector flow channel 301 can be large, in order to improve the uniformity of the gas flow distribution in the first direction, the boss 211 for flow limiting can be arranged in the first part 21, and the boss 211 is arranged above the flow guide part 212, that is, the boss 211 is closer to the fire hole 101, so that the gas flow can pass through the flow limiting of the boss 211, part of the gas can pass through the boss 211 and enter the fire hole 101, and the other part or most of the gas flow can pass through the flow guide part 212 with small resistance and then enter the second part 22, so that the mixed gas is distributed uniformly in the first direction, and multiple fire holes 101 can react with the mixed gas when ignited, thereby avoiding uneven distribution of the burner 100, improving the uniformity of the burner 100, and facilitating full combustion of the gas.

[0069] Further, in combination with Figure 3 The flow area of the boss 211 is smaller than that of the flow guide part 212, so that the resistance of the gas flow at the outlet end 303 of the ejector pipe 30 entering the boss 211 is greater than that of the flow guide part 212, which can guide the gas to flow to the flow guide part 212, and the gas entering the fire hole 101 in the first part 21 can be limited by the boss 211, thereby realizing reasonable distribution of the gas flow.

[0070] Further, the boss 211 is configured in a gradually tapered form away from the ejector flow channel 301, that is, the size of the boss 211 gradually decreases in the direction gradually away from the ejector flow channel 301, which can gradually reduce the flow limiting effect on the gas flow, thereby facilitating the uniformity of the gas distribution in the first direction.

[0071] In some embodiments of the present application, the second portion 22 is configured to gradually shrink in a direction away from the ejector flow channel 301, so that in the region of the end portion of the fire hole 101, the gas can be gathered near the fire hole 101 to improve the combustion effect of the fire hole 101 located at the end portion.

[0072] In combination Figure 2 , the distribution flow channel 20 further comprises a third portion 23 extending in the first direction, and the third portion 23 communicates with the outlet end 303 of the ejector flow channel 301. Specifically, the third portion 23 is arranged between the ejector flow channel 301 and the fire hole 101, and the gas flows out of the ejector flow channel 301 and enters the third portion 23, and the fire hole 101 can react with the gas in the third portion 23, and the third portion 23 can distribute the gas flow to the fire hole 101 located at the end portion, which is beneficial to improve the uniformity of the gas during reaction. Specifically, the third portion 23 and the second portion 22 are located at both ends of the burner 100, and the first portion 21 is located between the third portion 23 and the second portion 22, so that the gas can be uniformly distributed in the first direction, thereby facilitating the distribution effect of the gas flow. In addition, the third portion 23 is opposite to at least a portion of the ejector flow channel 301 in the second direction, and the third portion 23 can communicate with the outlet end 303 of the ejector flow channel 301, so that the gas at the outlet of the ejector flow channel 301 can directly enter the third portion 23. In this way, when the ejector flow channel 301 and the distribution flow channel 20 are in the first direction, the size of the burner 100 in the second direction can be reduced, and the distribution effect of the gas flow can be ensured.

[0073] In combination Figure 2 and Figure 3 , the burner 100 further comprises a gas collecting cavity 40, and the gas collecting cavity 40 communicates with the outlet end 303 of the ejector flow channel 301, the third portion 23 and the distribution flow channel 20. Specifically, the gas at the outlet end 303 of the ejector flow channel 301 can be collected in the gas collecting cavity 40 and respectively flow to the third portion 23 and the first portion 21, so that the gas can be distributed in the first direction.

[0074] In combination Figure 4 , in one specific embodiment of the present application, the cross section of the flow guide portion 211 is wide in the middle and narrows downward and upward, the flow guide portion 211 includes an expansion section and a contraction section, and the contraction section can be formed between the boss 211 and the expansion section. The contraction section is connected with the boss 211, the cross section of the boss 211 is in the shape of a strip, and the boss 211 communicates with the fire hole 101.

[0075] Further, the gas collecting cavity 40 is communicated with the outlet end 303 of the ejector flow channel 301, and the gas collecting cavity 40 is communicated with the first part 21 of the distribution flow channel 20. That is to say, the gas collecting cavity 40 can be arranged between the ejector flow channel 301 and the distribution flow channel 20, and the gas collecting cavity 40 is opposite to the first part 21 and the third part 23, so that the gas in the gas collecting cavity 40 can be distributed through the first part 21 and then enter the second part 22, thereby realizing the distribution of the gas flow in the first direction. Wherein, the part of the gas collecting cavity 40 close to the fire hole 101 is opposite to the boss 211 in the first direction, and the part away from the fire hole 101 is opposite to the flow guide part 212, which can ensure that a part of the gas can enter the second part 22, thereby realizing the distribution effect.

[0076] In combination Figure 2 In some embodiments of the present application, the gas collecting cavity 40 has a distribution part 401 extending towards the third part 23, and the distribution part 401 is connected to the third part 23, so that the gas can flow to the fire hole 101 at the end, thereby realizing the uniform distribution of the gas. More specifically, the distribution part 401 gradually shrinks towards the third part 23, thereby realizing the flow limiting effect. The inner wall of the distribution part 401 is arc-shaped.

[0077] The burner 100 according to an embodiment of the present application. In the related art, the burner is generally composed of an air inlet, an ejector pipe, a distribution section and a fire hole. The ejector pipe is usually connected near the center of the distribution section along the length direction of the burner to facilitate distribution, but the distribution part is installed above the ejector pipe, which increases the height of the burner. In addition, the pipe or rod structure can be made lower, but the disadvantage is that the protruding part of the throat is longer than the fire hole, so that the part needs additional space, which leads to a larger occupied space, and the mixed gas ejected from the fire hole is often ejected at a certain angle, which is difficult to form a uniform flame.

[0078] Therefore, the present application provides a burner 100, which reduces the height of the burner 100 by forming the ejector flow channel 301 and the distribution flow channel 20 as a whole, thereby improving the installation of the burner 100. By installing the distribution part of the burner 100 in the ejector pipe 30, the ejector pipe 30 and the distribution flow channel 20 are arranged along the length direction, which can reduce the height of the burner 100 and significantly improve the convenience of installation. In this way, an ejector pipe 30 part is formed from the air inlet in the transverse direction, and a distribution section is installed on the transverse part of the ejector pipe 30 part, or in other words, the distribution section is installed on the side of the ejector pipe 30. In an embodiment of the present application, in combination Figure 2 This structure makes the B / A ratio about 0.25, so that the size of the burner 100 in the height direction is shorter.

[0079] In combination Figure 1In some embodiments of the utility model, the injection runner 301 includes an incident section 31, a throat 32 and an injection section 33, the incident section 31 is designed as a converging runner extending to the throat 32 along the first direction, the injection section 33 is designed as a diverging runner with one end connected to the throat 32 and extending along the first direction, and the other end of the injection section 33 is communicated with the distribution runner 20. Specifically, the injection runner 301 can inject the gas sprayed by the nozzle into the surrounding air, realize the mixing of the gas and the primary air, and enter the distribution runner 20. Among them, the incident section 31 is the starting part of the injection runner 301, the gas and the primary air are sucked into the injection runner 301 from the incident section 31; the throat 32 is the middle part of the injection runner 301, the gas and the primary air are mixed in the throat 32; the injection section 33 is the end part of the injection runner 301, the mixed gas and the primary air are further mixed in the injection section 33, so that the gas and the primary air are fully mixed, and then enter the distribution runner 20, and the gas is distributed to the plurality of fire holes 101 through the distribution runner 20.

[0080] In combination Figure 2 The size value L313 of the inlet end 31a of the incident section 31 along the third direction is less than the size value L312 along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other. Specifically, the inlet end 31a of the incident section 31 is also the air inlet of the primary air, and the second direction can be the height direction of the burner 100, and the third direction is the thickness direction of the burner 100, that is, the size of the inlet end 31a of the incident section 31 in the thickness direction of the burner 100 is less than the size of the inlet end 31a of the incident section 31 along the height direction of the burner 100, which can reduce the space occupied in the thickness direction of the burner 100, and facilitate the miniaturization design of the burner 100.

[0081] It should be noted that the primary air in the present application refers to the air that is premixed with fuel and participates in combustion.

[0082] Specifically, the burner 100 can be used for a cooking utensil, by reducing the size of the inlet end 31a of the incident section 31 in the thickness direction of the burner 100, the structure of the burner 100 is compact, the burner 100 is convenient to install, and the installation efficiency of the cooking utensil is improved.

[0083] According to the Venturi effect, when fluid flows through a tapered pipe, the flow rate will increase and the pressure will decrease, which helps to suck in the surrounding air and mix with the gas. In order to obtain the best air intake effect of the primary air, in the related art, the primary air inlet is usually circular, but this easily causes the size of the primary air inlet of the burner in the thickness direction of the burner to protrude from other parts of the burner, resulting in that the burner as a whole occupies too much space in the thickness direction. The burner 100 of the embodiment of the present application reduces the size value of the inlet end 31a of the incident section 31 in the third direction, which can be substantially consistent with the thickness of the burner 100, thereby reducing the space occupied by the burner 100 in the thickness direction, facilitating the installation of the burner 100.

[0084] The burner 100 according to the embodiment of the present application can reduce the space occupied by the burner 100 in the thickness direction, facilitate the miniaturization design of the burner 100, and facilitate the installation of the burner 100.

[0085] In the present application, the inlet end 31a of the incident section 31 can be configured in different shapes, for example, the third direction of at least one side of the inlet end 31a can be provided with a flat part, which can reduce the space occupied by the inlet end 31a in the third direction; or the inlet end 31a can be configured as an oval; or the inlet end 31a can be configured as a rectangle, etc. The present application provides some embodiments that the size value of the inlet end 31a of the incident section 31 in the third direction is smaller than the size value in the second direction, but this is not a limitation on the protection scope of the present application.

[0086] For example, the size of the inlet end 31a in the third direction can be reduced to the same degree as the width of other parts of the burner 100, thereby improving the installation of the burner 100.

[0087] In combination Figure 1 and Figure 2 In some embodiments of the present application, at least one side of the inlet end 31a of the incident section 31 in the third direction is provided with a first flat part 315, and the distance between the middle of the first flat part 315 in the second direction and the axis of the injection flow channel 301 is smaller than the distance between the end and the axis of the injection flow channel 301. Specifically, one side of the inlet end 31a of the incident section 31 in the third direction can be provided with a first flat part 315; or, both sides of the inlet end 31a of the incident section 31 in the third direction are provided with a first flat part 315. In combination Figure 5The distance between the middle part of the first flat part 315 along the second direction and the axis of the injection flow channel 301 is D21, and the distance between the end part of the first flat part 315 along the second direction and the axis of the injection flow channel 301 is D22, wherein D21 < D22, the size of the inlet end 31a of the incident section 31 in the third direction can be reduced, the width size of the inlet end 31a is reduced, the thickness size of the burner 100 as a whole is facilitated to be reduced, and the installation of the burner 100 is facilitated.

[0088] The first flat part 315 is provided as a straight section extending along the second direction, which facilitates the processing and forming of the burner 100, facilitates the miniaturization design of the burner 100, and avoids the burner 100 occupying too much space in the third direction.

[0089] Optionally, the first flat part 315 is provided as an arc-shaped section extending along the second direction.

[0090] In combination with Figure 1 In some embodiments of the utility model, the inlet end 31a of the incident section 31 includes a first side face 311, a second side face 312, a third side face 313 and a fourth side face 314 connected in sequence around the axis of the injection section 33, the first side face 311 and the third side face 313 are oppositely arranged along the second direction, and the second side face 312 and the fourth side face 314 are oppositely arranged along the third direction.

[0091] The first side face 311 and / or the third side face 313 are provided as arc faces outwardly convex in the middle part along the second direction. Specifically, the first side face 311 and the third side face 313 can be oppositely arranged along the height direction of the burner 100, and the burner 100 has sufficient space in the height direction, so that the first side face 311 and the third side face 313 can be provided as outwardly convex arc faces, so as to expand the flow area of the inlet end 31a and facilitate the introduction of sufficient primary air through the inlet end 31a.

[0092] Further, the first side face 311 and / or the third side face 313 are provided as first circular arc faces with the axis of the injection section 33 as the center, which facilitates the uniform supply of primary air to the injection section 33 through the inlet end 31a. Exemplarily, the nozzle of the burner 100 can be directly opposite the axis of the injection section 33, which facilitates the uniform mixing of gas and primary air and improves the combustion stability of the burner 100.

[0093] One of the first side 311 and the third side 313 can be provided as a first circular arc surface centered on the axis of the injection section 33, or both the first side 311 and the third side 313 are provided as the first circular arc surface centered on the axis of the injection section 33. Preferably, both the first side 311 and the third side 313 are provided as the first circular arc surface centered on the axis of the injection section 33, so as to facilitate the injection section 33 to be uniformly provided with the primary air through the inlet end 31a, improve the mixing uniformity of the gas and the primary air, and improve the combustion stability of the burner 100.

[0094] In combination Figure 1 And Figure 2 In some embodiments of the present application, the second side 312 and / or the fourth side 314 are provided as a plane, so as to facilitate the processing and forming of the burner 100, and in addition, the space occupied by the inlet end 31a in the third direction can be reduced, and the size of the burner 100 in the thickness direction is minimized, facilitating the installation of the burner 100.

[0095] One of the second side 312 and the fourth side 314 can be provided as a plane, or both the second side 312 and the fourth side 314 are provided as a plane. Preferably, both the second side 312 and the fourth side 314 are provided as a plane, and the second side 312 and the fourth side 314 are symmetrical in the third direction, so as to facilitate the processing and forming of the burner 100, and facilitate the uniform introduction of the primary air through the inlet end 31a, and improve the mixing uniformity of the primary air and the gas.

[0096] In other embodiments of the present application, the second side 312 and / or the fourth side 314 are provided as a second circular arc surface, and the diameter of the second circular arc surface is greater than that of the first circular arc surface, so as to reduce the space occupied by the inlet end 31a in the third direction, reduce the size of the burner 100 in the thickness direction, and facilitate the installation of the burner 100.

[0097] One of the second side 312 and the fourth side 314 can be provided as a second circular arc surface, or both the second side 312 and the fourth side 314 are provided as a second circular arc surface. Preferably, both the second side 312 and the fourth side 314 are provided as a second circular arc surface, and the second side 312 and the fourth side 314 are symmetrical in the third direction, so as to facilitate the uniform introduction of the primary air through the inlet end 31a.

[0098] Optionally, the inlet end 31a of the injection section 31 is provided as an ellipse with a long axis extending in the second direction and a short axis extending in the third direction, so as to reduce the size of the inlet end 31a of the injection section 31 in the third direction, thereby reducing the space occupied by the burner 100 in the thickness direction, facilitating the installation of the burner 100.

[0099] Optionally, the inlet end 31a of the incident section 31 is rectangular. The long side of the rectangle extends along the second direction, and the short side extends along the third direction, which makes it easier to reduce the size of the inlet end 31a of the incident section 31 along the third direction, thereby reducing the space occupied by the burner 100 in the thickness direction and facilitating the installation of the burner 100.

[0100] In some embodiments of this utility model, combined with Figure 2 The ratio of dimension value L312 to dimension value L313 satisfies 1 < L312 / L313 ≤ 1.38. Where L312 / L313 is greater than 1, the dimension of the inlet end 31a along the height direction of the burner 100 is larger than its dimension along the thickness direction of the burner 100. This can be understood as the burner 100 includes flame holes 101 distributed along the second direction and an ejector channel 301. Therefore, the inlet end 31a along the height direction of the burner 100 can have a large design space. However, an excessively large dimension of the inlet end 31a in the width direction will result in a thicker overall thickness of the burner 100. L312 / L313 being greater than 1 can reduce the overall dimension of the burner 100 in the thickness direction without affecting the suction capacity of the ejector channel 301. L312 / L313 ≤ 1.38 can prevent the dimension of the inlet end 31a along the third direction from being too small, which would affect the uniformity of primary air intake by the ejector channel 301.

[0101] In some embodiments of this invention, the dimension value L312 and the diameter value D1 of the throat 32 satisfy 3 ≤ (L312 / D1)2 ≤ 3.5. Specifically, the injection section 31 is configured as a tapered pipe extending along the first direction to connect with the throat 32. After primary air and combustion gas enter the ejector channel 301 from the inlet end 31a, the gas velocity increases and the pressure decreases, allowing the primary air and combustion gas to be smoothly drawn in and mixed within the ejector channel 301. Wherein, (L312 / D1)2 is greater than or equal to 3 to facilitate obtaining the optimal primary air intake effect through the inlet end 31a; (L312 / D1)2 is less than or equal to 3.5 to avoid affecting the efficiency of primary air intake.

[0102] Combination Figure 1 In some embodiments of this utility model, the gas collecting chamber 40 is connected to the ejector section 33 and the distribution channel 20. After the gas mixed with primary air passes through the ejector section 33, it can be further mixed evenly in the gas collecting chamber 40 and distributed to the flame hole 101 through the distribution channel 20 for combustion, thereby improving the combustion stability of the burner 100.

[0103] The second flat portion 41 is provided on at least one side of the gas collecting cavity 40 along the third direction, and the second flat portion 41 does not protrude into the incident section 31 in the projection along the first direction. Specifically, the second flat portion 41 can be provided on one side of the gas collecting cavity 40 along the third direction, or the second flat portion 41 can be provided on both sides of the gas collecting cavity 40 along the third direction. By providing the second flat portion 41, the size of the burner 100 along the third direction can be reduced, the space occupied by the burner 100 in the thickness direction can be reduced, and the processing and forming of the burner 100 are facilitated.

[0104] In combination Figure 8 For example, the burner 100 can be used in a cooking appliance. By reducing the space occupied by the burner 100 in the thickness direction, the installation of the burner 100 is facilitated, and the space utilization of the cooking appliance is improved.

[0105] In some embodiments of the present application, the inlet end of the incident section is provided with a first flat portion on both sides along the third direction, the first flat portion is provided as a straight section along the second direction, and the gas collecting cavity is provided with a second flat portion on both sides along the third direction, the second flat portion does not protrude into the first flat portion in the projection along the first direction. Preferably, in the projection along the first direction, the second flat portion coincides with the first flat portion, which facilitates the improvement of the injection performance of the burner, reduces the size of the burner along the third direction, makes the structure of the burner compact, and improves the space utilization. The thickness of the burner is small, which facilitates the installation of the burner in the gas oven and improves the installation efficiency of the burner.

[0106] In combination Figure 2 In the present application, the size of the incident section 31 along the first direction is L311, the size of the throat 32 along the first direction is L321, the size of the injection section 33 along the first direction is L331, and the diameter of the throat 32 is D1.

[0107] In some embodiments of the present application, 4≤(L331+L321) / D1≤6, which optimizes the injection flow channel 301 of the gas and the primary air and improves the injection effect of the burner 100. Wherein, (L331+L321) / D1 is greater than or equal to 4, the size of the throat 32 and the injection section 33 along the first direction is the injection length of the injection flow channel 301, by setting the injection length and the diameter of the throat 32 within a reasonable range, the injection effect of the burner 100 is improved, and the gas and the primary air are mixed uniformly; (L331+L321) / D1 is less than or equal to 6, which avoids that the injection length is too long and occupies too much space of the burner 100, and is not conducive to the injection of the gas.

[0108] In still some embodiments of the present application, 1<=L311 / D1<=2, the ejecting effect of the burner 100 is improved by optimizing the ejecting flow channel 301, wherein L311 / D1 is greater than or equal to 1, the effect of the ejecting primary air by the incident section 31 is optimized, and the burner 100 is provided with reasonable primary air, and L311 / D1 is less than or equal to 2, the size of the incident section 31 is prevented from being too long, and the ejecting ability of the gas is reduced.

[0109] In combination Figure 2 In some embodiments of the present application, the distribution flow channel 20 has a first side wall 24 opposite to the plurality of fire holes 101, the boss 211 includes a second side wall 220 opposite to the first side wall 24, the gas flow passes through the boss 211 and flows between the first side wall 24 and the second side wall 220, the second side wall 220 includes a first guide surface 221, the end of the first guide surface 221 extends to the edge of the first part 21 close to the second part 22, wherein the distance between the first guide surface 221 and the first side wall 24 gradually decreases in the direction away from the ejecting flow channel 301. Specifically, when the gas flow passes in the direction away from the ejecting flow channel 301, the gas flow passage gradually decreases, the gas flow velocity can be increased, when the gas flow reaches the end of the first guide surface 221, the gas flow passage suddenly increases, at the edge of the first guide surface 221 close to the second part 22, the gas flow can rapidly expand, and the vortex is formed at the end of the first guide surface 221, and then the gas flow moves upward into the fire hole 101 along the second direction, the gas flow can enter the fire hole 101 along the second direction, the gas flow passing path can be optimized, the gas flow can be vertically injected from the fire hole 101, and the full reaction of the gas flow in the fire hole can be realized, thereby improving the combustion effect of the burner 100.

[0110] According to the burner 100 of the present application, the ejecting flow channel 301, the first part 21 and the second part 22 are distributed along the first direction, the compactness of the structure of the burner 100 can be improved, the gas flow can enter the burner 100 along the first direction and be distributed along the first direction, and the distribution flow channel 20 gradually narrows in the direction away from the ejecting flow channel 301, and the distribution effect can be improved.

[0111] In some embodiments of the present application, the first guide surface 221 is parallel to the first direction, the guiding effect of the gas flow can be improved, and the effect of the gas flow entering the fire hole 101 can be improved. Specifically, in combination Figure 2 , when the gas flow flows from the end of the first guide surface 221 to the fire hole 101, the gas flow rapidly expands, the vortex is formed at the end of the first guide surface 221, and the flow direction of the gas flow is bent toward the direction of the fire hole 101, and then the gas flow can be injected from the fire hole 101 along the second direction perpendicular to the first direction, the consistency and stability of the fire of the plurality of fire holes 101 when the burner 100 is combusted can be improved.

[0112] Specifically, in the related art, the gas mixture or mixed gas in the combustor can flow obliquely upward to the top end of the combustor when passing through the distribution section, which affects the shape of the flame after ignition. Therefore, in the present application, by arranging the first guide surface 221 extending horizontally or in the first direction on the boss 211 of the distribution flow channel 20, the gas flow is guided horizontally by the guide surface, and the flow area inside the distribution flow channel 20 rapidly expands at the end of the first guide surface 221, generating a vortex, so that the gas flow is in a vertical state when flowing upward, and the gas flow ejected from the flame port can be vertical, which can improve the combustion effect of the combustor 100.

[0113] Optionally, in combination with Figure 2 , the included angle between the first guide surface 221 and the first direction is greater than or equal to 0 and less than or equal to 10°. For example, the included angle between the first guide surface 221 and the first direction is 3°, 5°, or 8°, etc. That is, the first guide surface 221 allows a certain inclination angle tolerance in the first direction. The first guide surface 221 can be substantially parallel to the first direction to achieve the effect of guiding the gas flow, so the manufacturing precision requirement of the first guide surface 221 is not high, which is beneficial to reduce the manufacturing cost. In actual application, the arrangement mode of the first guide surface 221 can be appropriately adjusted according to the actual situation, which can improve the application flexibility. More specifically, the first guide surface 221 can extend in the first direction for a certain distance, which can improve the guiding effect of the gas flow. In actual application, the size of the combustor 100 and the use requirements of the combustor 100 can be reasonably arranged.

[0114] In some embodiments of the present application, the first side wall 24 extends in the first direction, so that the gas flow can flow to the fire hole 101 far away from the ejector flow channel 301, and in the flow process, the first side wall 24 is inclined in the direction away from the ejector flow channel 301 towards the plurality of fire holes 101, which can gradually guide the gas to the position close to the fire hole 101, and also can reduce the resistance of the gas flow, improve the flow rate, and thus improve the combustion effect of the fire hole 101 far away from the ejector flow channel 301.

[0115] In some embodiments of the present application, the second side wall 220 further comprises a second guide surface 222, and the second guide surface 222 is closer to the ejector flow channel 301 than the first guide surface 221. Therefore, the gas at the outlet of the ejector flow channel 301 is first guided by the second guide surface 222 to the first guide surface 221, and the spacing between the first side wall 24 and the second guide surface 222 gradually decreases in the direction away from the ejector flow channel 301, which is beneficial to guide the gas flow to flow quickly and improve the gas flow distribution effect.

[0116] In some embodiments of the utility model, first guide surface 221 and second guide surface 222 are parallel, when airflow flows from second guide surface 222 to first guide surface 221, the airflow is guided in the first direction. Specifically, after the airflow enters the distribution flow channel from the ejector flow channel, the airflow is guided by second guide surface 222, and the airflow can flow horizontally, which is conducive to guiding the airflow to extend in the first direction.

[0117] Optionally, the angle between second guide surface 222 and the first direction is greater than or equal to 0 and less than or equal to 10°, which can reduce the precision requirement for the boss 211 and can optimize the airflow circulation path.

[0118] In some embodiments of the utility model, second guide surface 222 is parallel to the first direction. Optionally, second guide surface 222 can also be provided in the form of gradually extending upwardly and away from the ejector flow channel 301.

[0119] In some embodiments of the utility model, the distance between second guide surface 222 and the plurality of fire holes 101 is greater than the distance between first guide surface 221 and the plurality of fire holes 101. Specifically, since second guide surface 222 is closer to the ejector flow channel 301, the airflow is greater in the area of second guide surface 222, and the distance between second guide surface 222 and the fire hole 101 is farther, which can reduce the amount of gas directly entering the fire hole 101, thereby avoiding local flame in the plurality of fire holes 101. Thus, the gas can continue to circulate to first guide surface 221 through second guide surface 222, thereby distributing the airflow away from the ejector flow channel 301, and at the position away from the ejector flow channel 301, the distance between first guide surface 221 and the fire hole 101 is closer, which can facilitate the gas supply to the fire hole 101, thereby improving the uniformity of the airflow distribution in the first direction.

[0120] More specifically, in combination with Figure 2 , the second side wall 220 further comprises a third guide surface 223, the third guide surface 223 is connected between the first guide surface 221 and the second guide surface 222, and the third guide surface 223 can better guide the airflow to circulate from the second guide surface 222 to the first guide surface 221.

[0121] Specifically, the airflow first flows through the second guide surface 222, and as the airflow channel expands, the airflow slows down once under the third guide surface 223 and slightly speeds up at the end of the first guide surface 221. In combination with Figure 2 , when the airflow flows from the second guide surface 222 to the third guide surface 223 and then to the first guide surface 221, the airflow channel is in a gradually expanding state, forming a stepped guiding effect, which is conducive to improving the distribution effect of the airflow in the first direction.

[0122] For example, in some embodiments of the utility model, third guide surface 223 is provided as a slanted plane gradually away from second side wall 220 in the direction away from ejector flow channel 301, thereby realizing the transition from second guide surface 222 to first guide surface 221. Since there is a height difference between second guide surface 222 and first guide surface 221, the third guide surface 223 arranged obliquely can reduce the resistance when the airflow flows, so that the airflow is easily transferred from second guide surface 222 to first guide surface 221.

[0123] Optionally, the third guide surface 223 is provided as an arc surface gradually away from the second side wall 220 in the direction away from the ejector flow channel 301. The arc surface can reduce the resistance when the airflow flows, facilitating smoother transition of the airflow.

[0124] In some embodiments of the utility model, in combination with Figure 2 , the angle between the third guide surface 223 and the first direction is greater than or equal to 30° and less than or equal to 60°, the angle between the third guide surface 223 and the first direction is α, 30°≥α≥60°, which can improve the guiding effect of the airflow, reduce the airflow resistance while avoiding the airflow changes dramatically, thereby reducing energy loss and improving the airflow flow rate. For example, α can be 35°, 45° or 50°, etc.

[0125] In some embodiments of the utility model, the angle between the first side wall 24 and the first direction is greater than or equal to 5° and less than or equal to 15°. In combination with Figure 2 , the angle between the first side wall 24 and the first direction is β, 5°≥β≥15°, β is the angle required to extend to the end of the burner 100, which can improve the gas delivery effect of the distribution flow channel 20 on the end of the burner 100, and facilitate the improvement of the combustion effect of the end of the burner 100. For example, β can be 8°, 10° or 12°, etc.

[0126] In some embodiments of the utility model, the ejector flow channel 301 extends along the first direction, which can shorten the size of the burner 100 along the second direction, and facilitate the direct connection of the ejector flow channel 301 with the distribution flow channel 20, thereby improving the structural compactness of the burner 100.

[0127] In some embodiments of the utility model, one end of the ejector flow channel 301 extends beyond the end of the plurality of fire holes 101 along the first direction, and the other end is distributed along the second direction with the plurality of fire holes 101.

[0128] In combination with Figure 1 and Figure 2 , in some embodiments of the utility model, the inlet end 302 of the ejector flow channel 301 extends beyond the end of the plurality of fire holes 101 along the first direction, which can lengthen the ejector flow channel 301, improve the air intake effect and gas mixing effect.

[0129] In some embodiments of the utility model, the boss 211 is protruded towards the distribution flow channel 20, the boss 211 can narrow the flow channel of the distribution flow channel 20 at the boss 211, the boss 211 has the flow limiting effect, part of the gas can enter the fire hole 101 through the boss 211, and the other part or most of the gas flow can enter the second part 22 of the distribution flow channel 20, so that the mixed gas is distributed along the first direction more uniformly, the multiple fire holes 101 can all react with the mixed gas when igniting, thereby realizing the distribution effect of the gas flow, avoiding uneven distribution of the burner 100, improving the uniformity of the burner 100, facilitating full combustion of the gas, and the structure is simple and easy to construct.

[0130] In some embodiments of the utility model, in combination with Figure 2 The burner 100 further comprises a communication groove 50, and the communication groove 50 extends along the first direction and communicates with the multiple fire holes 101. That is to say, the communication groove 50 can connect the multiple fire holes 101 and the distribution flow channel 20 along the second direction, and the gas flow distributed through the distribution flow channel 20 enters the communication groove 50 and then enters the fire hole 101, thereby improving the stability of the gas flow near the fire hole 101. Specifically, the gas flow flows along the first direction and then enters the fire hole 101 along the second direction, so that the gas flow may be inclined upward when changing the flow direction, which may affect the shape and stability of the flame during combustion, and the flame may be unstable. By arranging the communication groove 50 between the distribution flow channel 20 and the fire hole 101, the stability of the gas flow can be improved, and the flame is more stable. Figure 1 In combination with , the size of the flow channel of the distribution flow channel 20 in different regions may be different because the distribution flow channel 20 needs to distribute the gas flow along the first direction, and the size of the flow channel of the communication groove 50 can be a fixed size, that is, the size of the flow channel of the communication groove 50 is the same at each position along the first direction, which can improve the stability of the gas flow between the communication groove 50 and the fire hole 101, and the flame is more uniform when igniting.

[0131] Figure 3 In some embodiments of the utility model, in combination with Figure 4The distribution flow channel 20 includes a first flow channel 201, a second flow channel 202 and a third flow channel 203 which are communicated with each other, the first flow channel 201 is opposite to the boss 211 along the third direction, the first flow channel 201 is arranged between the second flow channel 202 and the communication groove 50, the third flow channel 203 is arranged on the side of the second flow channel 202 away from the ejection flow channel 301 and is distributed with the communication groove 50 along the second direction. Specifically, the first flow channel 201 and the second flow channel 202 can be arranged in the first part 21 of the distribution flow channel 20, and the third flow channel 203 can be arranged in the second part 22 of the distribution flow channel 20. The boss 211 can form the first flow channel 201 in the distribution flow channel 20, the flow area of the first flow channel 201 is small, after the gas flow enters the first part 21, part of the gas flow passes through the boss 211, and part of the gas flow enters the second part 22 from the flow guide part 212, the second flow channel 202 is formed in the region, the flow area of the second flow channel 202 is larger than that of the first flow channel 201, so that more gas flow can enter the second part 22 from the second flow channel 202, and less gas flow enters the communication groove 50 and the second part 22 from the first flow channel 201. Therefore, the first flow channel 201 is between the second flow channel 202 and the communication groove 50, so that the first flow channel 201 can control the amount of gas flow entering the communication groove 50 from the ejection flow channel 301 outlet and the second flow channel 202, thereby playing a flow limiting effect.

[0132] More specifically, in some embodiments of the present application, in combination with Figure 3 , the size value of the first flow channel 201 along the third direction is L31, the size value of the second flow channel 202 along the third direction is L32, the size value of the third flow channel 203 along the third direction is L33, and the size value of the communication groove 50 along the third direction is L34, wherein L31 Specifically, in the first part 21 of the distribution flow channel 20, L32 is greater than L31 and L34, that is, in the region away from the fire hole 101, the size of the flow channel is large, which can improve the distribution efficiency of the gas, and the size of the flow channel is small near the fire hole 101, which is convenient for controlling the amount of gas flow entering the fire hole 101, thereby ensuring the uniformity of distribution and the stability of the flame. Similarly, the size L33 of the third flow channel 203 is greater than the size L34 of the communication groove 50, which can control the gas flow in the third flow channel 203 to enter the fire hole 101 after being limited by the communication groove 50, which can improve the stability of the gas flow entering the fire hole 101 and is beneficial to control the flow of the gas flow. For example, in one specific embodiment of the present application, L31

[0133] The first direction can refer to the X direction in Figure 2 , for example, it can be the left and right directions, and the second direction can refer to the Y direction in Figure 2The third direction can be a direction perpendicular to the first direction and the second direction, for example, a left-right direction. Figure 3 The first direction can be a length direction of the burner 100, the second direction can be a height direction of the burner 100, and the third direction can be a thickness direction of the burner 100.

[0134] In some embodiments of the present application, the gas collecting cavity 40 is arranged between the ejector flow channel 301 and the distribution flow channel 20, and communicates the ejector flow channel 301, the first flow channel 201, the second flow channel 202, and the communication groove 50. The gas at the outlet end 303 of the ejector flow channel 301 can be collected in the gas collecting cavity 40, which can improve the mixing effect of air and gas and flow through the communication groove 50 and the distribution flow channel 20 respectively, so that the gas can flow in the first direction.

[0135] Specifically, in some embodiments of the present application, in combination with Figure 3 , the size value of the gas collecting cavity 40 along the third direction is L35, the size value of the first flow channel 201 along the third direction is L31, the size value of the second flow channel 202 along the third direction is L32, and the size value of the communication groove 50 along the third direction is L34, wherein L31

[0136] In a specific embodiment of the present application, L35

[0137] In combination with Figure 3In some embodiments of the utility model, the burner 100 includes a first half 11 and a second half 12, the first half 11 and the second half 12 are connected to form the burner 100, and the first half 11 and / or the second half 12 are integrally formed, which facilitates manufacturing and assembly. Specifically, the main body 10 can be configured in a rectangular structure, which is relatively regular and facilitates arrangement and assembly during application. A portion of the injection pipe 30 is arranged on the main body 10, and another portion extends out of the main body 10. The boss 211 is recessed inward on the first half 11 and the second half 12, and the flow guide 212 and the second part 22 are protruded outward on the first half 11 and the second half 12, thereby forming a concave-convex outer surface. Since the second part 22 gradually extends upward or toward the fire hole 101 at the end of the main body 10, the second part 22 has a flat surface below, and the first half 11 and the second half 12 can be provided with corresponding positioning holes 103. The flat surface can be used to connect with the cooking utensil 1000. For example, the cooking utensil 1000 has a support frame 500, which is connected with the burner 100 through the positioning hole 103.

[0138] In combination Figure 6 According to the cooking utensil 1000 of the utility model, the burner 100, the gas supply assembly 400 and the igniter are provided, the gas supply assembly 400 provides gas to the injection flow channel 301, and the igniter is arranged on the burner 100 and is suitable for igniting the gas of the burner 100.

[0139] According to the cooking utensil 1000 of the utility model, the burner 100 is applied to the cooking utensil 1000, the size of the burner 100 in the second direction is shortened, the compactness of the structure of the burner 100 is improved, space arrangement is facilitated, and the compactness of the structure of the cooking utensil 1000 is facilitated.

[0140] Specifically, the burner 100 can be arranged at the bottom of the cooking utensil 1000. During application, the gas and air mixture entering the injection flow channel 301 flows to the distribution flow channel 20 after preliminary mixing in the injection flow channel 301, and then flows out of the fire hole 101 to be ignited and burned. The heat generated by the burning enters the inner container through the opening at the bottom of the inner container, thereby cooking the food in the inner container.

[0141] In combination Figure 7 and Figure 8More specifically, the cooking utensil 1000 includes a machine body 200 and a fan 300, the machine body 200 is provided with a cooking cavity 210 and a combustion chamber 220, the combustion chamber 220 is communicated with the cooking cavity 210; the fan 300 is configured to drive flue gas to circulate between the cooking cavity 210 and the combustion chamber 220; and a burner 100 is arranged in the combustion chamber 220. The cooking cavity 210 can be used to place food and heat the food, the burner 100 burns to generate high-temperature gas, and the high-temperature gas can be sent from the combustion chamber 220 to the cooking cavity 210 through the fan 300, so that the backflow air in the cooking cavity 210 is mixed and circulated with the high-temperature flue gas in the combustion chamber 220, the food in the cooking cavity 210 can be heated by the flowing hot air, and the cooking efficiency and heating uniformity of the cooking utensil 1000 are improved. Wherein, in the working process of the fan 300, the combustion chamber 220 also generates negative pressure, which facilitates the burner 100 to draw in more primary air, the inlet end 31a of the incident section 31 serves as the inlet of the primary air, and under the action of the fan 300, the flow area of the inlet end 31a of the incident section 31 can be reduced without affecting the suction capacity of the injection flow channel 30. Specifically, the size of the inlet end 31a of the incident section 31 along the third direction can be reduced, the size of the burner 100 in the thickness direction can be reduced, and the suction capacity of the injection flow channel 30 for the primary air is not affected.

[0142] In addition, the burner 100 is arranged in the combustion chamber 220, and by reducing the size of the burner 100 in the thickness direction, the burner 100 can avoid occupying too much space in the combustion chamber 220, and the installation of the burner 100 is facilitated.

[0143] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", "outer", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0144] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0145] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be the communication of two element internals or the interaction of two elements, unless another definite limitation.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0146] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly contacted through intermediate medium.Moreover, the first feature "over", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than that of the second feature.The first feature "under", "below" and "on" the second feature can be that the first feature is directly below or obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than that of the second feature.

[0147] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "specific embodiment" or "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the utility model.In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or embodiment.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.In addition, the skilled in the art can combine and combine the different embodiments or features of different embodiments described in the specification without contradiction.

[0148] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and the skilled in the art can change, modify, replace and modify the above embodiments within the scope of the utility model.

Claims

1. A burner (100) characterized in that, The burner (100) comprises a plurality of fire holes (101), a distribution flow channel (20) and an injection flow channel (301), the plurality of fire holes (101) are distributed along a first direction, the distribution flow channel (20) and the plurality of fire holes (101) are distributed along a second direction, the injection flow channel (301) extends along the first direction and is distributed along the first direction with the distribution flow channel (20), an outlet of the injection flow channel (301) communicates with the distribution flow channel (20), and the first direction is perpendicular to the second direction.

2. Burner (100) according to claim 1, characterized in that One end of the injection flow channel (301) extends beyond an end of the plurality of fire holes (101) along the first direction, and the other end is distributed along the second direction with the plurality of fire holes (101).

3. Burner (100) according to claim 1, characterized in that The burner (100) comprises a main body (10) and an injection pipe (30), the plurality of fire holes (101) and the distribution flow channel (20) are arranged in the main body (10), the injection flow channel (301) is arranged in the injection pipe (30), and at least a part of the injection pipe (30) extends beyond an end of the main body (10) along the first direction.

4. Burner (100) according to claim 3, characterized in that The main body (10) has a size value A along the first direction, and the maximum size of the main body (10) and the injection pipe (30) along the second direction is B, which satisfies B / A<0.

35.

5. The combustor (100) of claim 1, wherein The injection flow channel (301) comprises an incident section (31), a throat (32) and an injection section (33), the incident section (31) is arranged as a converging flow channel extending along the first direction to the throat (32), the injection section (33) is arranged as a diverging flow channel with one end connected to the throat (32) and extending along the first direction, and the other end of the injection section (33) communicates with the distribution flow channel (20). The incident section (31) has an inlet end (31a) along a third direction with a size value L313 smaller than a size value L312 along a second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

6. Burner (100) according to claim 5, characterized in that The inlet end (31a) of the incident section (31) is arranged as a first flat portion (315) on at least one side along the third direction, and the distance between the middle of the first flat portion (315) along the second direction and the axis of the injection flow channel (301) is smaller than the distance between the end and the axis of the injection flow channel (301).

7. Burner (100) according to claim 6, characterized in that The first flat portion (315) is arranged as a straight section or an arc section extending along the second direction.

8. Burner (100) according to claim 5 or 6, characterized in that The inlet end (31a) of the incident section (31) comprises a first side (311), a second side (312), a third side (313) and a fourth side (314) connected in sequence around the axis of the injection section (33), the first side (311) and the third side (313) are arranged opposite to each other along the second direction, the second side (312) and the fourth side (314) are arranged opposite to each other along the third direction, and the first side (311) and / or the third side (313) are arranged as an arc surface with the middle convex outward along the second direction.

9. Burner (100) according to claim 8, characterized in that The first side surface (311) and / or the third side surface (313) is provided as a first circular arc surface centered on an axis of the injection section (33), Wherein, the second side surface (312) and / or the fourth side surface (314) is provided as a plane; or, the second side surface (312) and / or the fourth side surface (314) is provided as a second circular arc surface, the diameter size of the second circular arc surface is greater than the diameter size of the first circular arc surface.

10. Burner (100) according to claim 5 or 6, characterized in that The inlet end (31a) of the injection section (31) is provided as an ellipse with a long axis extending along the second direction and a short axis extending along the third direction; Or, the inlet end (31a) of the injection section (31) is provided as a rectangle.

11. The burner (100) according to claim 5, characterized in that The ratio of the size value L312 to the size value L313 satisfies 1 and / or the size value L312 and the diameter size value D1 of the throat (32) satisfy, 3≤(L312 / D1) 2 ≤3.5; And / or, a gas collecting cavity (40) is provided between the injection section (33) and the distribution flow channel (20), the gas collecting cavity (40) communicates the injection section (33) and the distribution flow channel (20), the gas collecting cavity (40) is provided with a second flat portion (41) on at least one side along the third direction, the second flat portion (41) does not protrude the injection section (31) in the projection along the first direction; And / or, the size value of the injection section (31) along the first direction is L311, the size value of the throat portion (32) along the first direction is L321, the size value of the injection section (33) along the first direction is L331, the diameter size value of the throat portion (32) is D1, Wherein, 4≤(L331+L321) / D1≤6; or, 1≤L311 / D1≤2.

12. The combustor (100) of claim 1, wherein, The distribution flow channel (20) includes a first part (21) and a second part (22), the first part (21) and the second part (22) are distributed along the first direction, the first part (21) is provided with a boss (211), the boss (211) is close to the fire hole (101).

13. Burner (100) according to claim 12, characterized in that The first part includes a flow guide portion (212), the boss (211) and the flow guide portion (212) are distributed along the second direction; And / or the distribution flow channel (20) has a first side wall (24) opposite to the plurality of fire holes (101), the boss (211) includes a second side wall (220) opposite to the first side wall (24), the second side wall (220) includes a first guide surface (221), an end of the first guide surface (221) extends to an edge of the first part (21) close to the second part (22), Wherein, the distance between the first guide surface (221) and the first side wall (24) gradually decreases in the direction away from the injection flow channel (301).

14. Burner (100) according to claim 13, characterized in that The included angle between the first guide surface (221) and the first direction is greater than or equal to 0 and less than or equal to 10°; And / or, the first guide surface (221) is parallel to the first direction; And / or, the first side wall (24) extends along the first direction and inclines towards the plurality of fire holes (101) in the direction away from the injection flow channel (301).

15. Burner (100) according to claim 13 or 14, characterized in that The second side wall (220) further comprises a second guide surface (222) which is closer to the ejector flow channel (301) than the first guide surface (221), and the distance between the first side wall (24) and the second guide surface (222) gradually decreases in the direction away from the ejector flow channel (301).

16. Burner (100) according to claim 15, characterized in that The first guide surface (221) and the second guide surface (222) are parallel; and / or, the angle between the second guide surface (222) and the first direction is greater than or equal to 0° and less than or equal to 10°; and / or, the second guide surface (222) is parallel to the first direction.

17. The combustor (100) of claim 15, wherein The distance between the second guide surface (222) and the plurality of fire holes (101) is greater than the distance between the first guide surface (221) and the plurality of fire holes (101), and the second side wall (220) further comprises a third guide surface (223) connected between the first guide surface (221) and the second guide surface (222).

18. The combustor (100) of claim 17, characterized in that, The third guide surface (223) is provided as an inclined plane gradually away from the second side wall (220) in the direction away from the ejector flow channel (301); or, the third guide surface (223) is provided as an arc surface gradually away from the second side wall (220) in the direction away from the ejector flow channel (301); And / or, the angle between the third guide surface (223) and the first direction is greater than or equal to 30° and less than or equal to 60°.

19. The combustor (100) of claim 13, wherein, The angle between the first side wall (24) and the first direction is greater than or equal to 5° and less than or equal to 15°.

20. The combustor (100) of claim 12, wherein, The combustor (100) further comprises a communication groove (50) extending along the first direction and communicating the plurality of fire holes (101), and the distribution flow channel (20) comprises a first flow channel (201), a second flow channel (202) and a third flow channel (203) communicating with each other, the first flow channel (201) is opposite to the boss (211) along a third direction, the first flow channel (201) is arranged between the second flow channel (202) and the communication groove (50), and the third flow channel (203) is arranged on the side of the second flow channel (202) away from the ejector flow channel (301) and is distributed with the communication groove (50) along the second direction.

21. The combustor (100) of claim 20, characterized in that, The size value of the first flow channel (201) along the third direction is L31, the size value of the second flow channel (202) along the third direction is L32, the size value of the third flow channel (203) along the third direction is L33, and the size value of the communication groove (50) along the third direction is L34, Wherein, L31 < L32; and / or, L31 < L33; and / or, L31 < L34; and / or, L34 < L32; and / or, L34 < L33.

22. The combustor (100) of claim 20, wherein, The combustor (100) further comprises a gas collecting cavity (40) arranged between the ejector flow channel (301) and the distribution flow channel (20) and communicating the ejector flow channel (301), the first flow channel (201), the second flow channel (202) and the communicating groove (50).

23. The combustor (100) of claim 22, characterized in that The size value of the gas collecting cavity (40) along the third direction is L35, the size value of the first flow channel (201) along the third direction is L31, the size value of the second flow channel (202) along the third direction is L32, and the size value of the communicating groove (50) along the third direction is L34, wherein L31 < L35; and / or, L32 < L35; and / or, L34 < L35; and / or, L34 < L33; and / or, L34 < L32.

24. A cooking appliance (1000), characterized in that, The combustor (100) according to any one of claims 1-23; a gas supply assembly (400) configured to supply gas to the ejector flow channel (301); an igniter arranged in the combustor (100) and configured to ignite the gas in the combustor (100). ​

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