Combustor and cooking utensil

Abstract

According to the combustor and the cooking utensil, the combustor comprises a combustion part and an injection pipe part which are connected with each other, the injection pipe part is located at one end of the combustion part, and the combustion part communicates with the injection pipe part; the whole combustion part is flat, a heat radiation surface is formed on the surface of the first side of the combustion part in the thickness direction, at least one end of the combustion part in the first direction extends towards the first side, so that the whole heat radiation surface is a concave surface, and the first direction is perpendicular to the thickness direction of the combustion part. The burner extends towards the first side along at least one end of the first direction, so that the whole heat radiation surface is concave, to-be-cooked food is positioned on the concave side of the heat radiation surface, the to-be-cooked food is better wrapped by heat radiation emitted by the heat radiation surface, the uniformity of the heat radiation borne by the food can be improved, and the cooking efficiency is improved. The cooking degree of each part of the food in the heating process tends to be consistent, and the cooking effect of the cooking utensil is improved.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, and more particularly to a burner and cooking appliance. Background Technology

[0002] Taking a gas oven as an example, the food to be cooked is placed inside the cooking cavity, and the high temperature generated by the combustion of gas is used to cook the food inside the cooking cavity. However, in related technologies, the heat radiation generated by the burner has poor uniformity, affecting the cooking effect of the appliance. Utility Model Content

[0003] In view of this, the embodiments of this application aim to provide a cooking appliance to improve the cooking effect of the cooking appliance.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0005] One embodiment of this application provides a burner, including:

[0006] A combustion section and an ejector section are connected to each other, the ejector section is located at one end of the combustion section, and the combustion section is in communication with the ejector section;

[0007] The combustion section is generally flat, and a heat radiation surface is formed on the surface of the combustion section on a first side in the thickness direction. At least one end of the combustion section in the first direction extends toward the first side so that the heat radiation surface is generally concave. The first direction is perpendicular to the thickness direction of the combustion section.

[0008] In some embodiments, the combustion portion extends toward the first side in the direction of opposite ends in the first direction, as projected onto a plane perpendicular to the thickness direction of the combustion portion.

[0009] In some embodiments, the thermal radiation surface includes a plurality of thermal radiation sub-planes, which are not coplanar and are orthographically projected onto a plane perpendicular to the thickness direction of the combustion section, and the plurality of thermal radiation sub-planes are connected in sequence.

[0010] In some implementations, the included angle between two adjacent thermal radiative subplanes is 165° to 175°.

[0011] In some embodiments, the burner has a symmetrical structure when projected onto a plane perpendicular to the thickness direction of the combustion section.

[0012] In some embodiments, the burner includes a first sub-plate, a second sub-plate, and a radial layered structure arranged along the thickness direction. The first sub-plate and the second sub-plate are joined together along the thickness direction to form the combustion section, and the radial layered structure is stacked on the side of the first sub-plate away from the second sub-plate.

[0013] In some embodiments, the burner includes a connector, one end of which passes through a first sub-plate, and the opposite ends of the connector are respectively connected to the radial layer structure and the second sub-plate.

[0014] In some embodiments, a portion of the second sub-plate protrudes toward the first sub-plate to form a protruding structure, and the first sub-plate is connected to the protruding structure.

[0015] In some implementations, the first subplate abuts against the protruding structure and is riveted to the protruding structure.

[0016] In some embodiments, the ejector tube includes a first half-tube and a second half-tube, which are joined together along the thickness direction.

[0017] In some embodiments, the first half-pipe and the first sub-plate are constructed as an integral first housing, and the first half-pipe and the first sub-plate are constructed as an integral second housing. The first housing and the second housing are joined together along the thickness direction to form the interconnected combustion section and the ejector section.

[0018] In some embodiments, the edge of the first sub-plate has a first flange, and the edge of the second sub-plate has a second flange. The second flange includes a first side portion and a second side portion that are connected to each other. The first side portion and the second side portion are stacked along the thickness direction. The first flange and the edge of the radial layered structure are sealed between the first side portion and the second side portion.

[0019] In some implementations, the first edge and the second edge are riveted together.

[0020] In some embodiments, the second subplate includes a cavity bottom wall, the cavity sidewalls extending along the edge of the cavity bottom wall, and a portion of the cavity bottom wall protruding in a direction away from the first subplate to form a boss portion, the boss portion facing the ejector tube portion and extending along the extension direction of the ejector tube portion, the boss portion being used to guide a portion of the airflow of the ejector tube portion.

[0021] In some embodiments, a portion of the boss portion extends obliquely toward the first sub-plate in a plane perpendicular to the extension direction of the ejector portion to form a slope, the slope forming an angle of 10° to 25° with the reference surface, the reference surface being perpendicular to the thickness direction of the burner.

[0022] Another aspect of this application provides a cooking appliance, including any of the burners described in the above embodiments.

[0023] The burner and cooking appliance provided in this application extend at least one end of the burner toward the first side along the first direction. On the one hand, this makes the entire heat radiation surface concave, and the food to be cooked is located on the concave side of the heat radiation surface. This allows the heat radiation emitted by the heat radiation surface to better envelop the food to be cooked, improving the uniformity of the heat radiation received by the food and making it easier for different parts of the food to cook at a more consistent degree during the heating process, thus improving the cooking effect of the cooking appliance. On the other hand, the concave heat radiation surface can also be used to concentrate the heat radiation emitted by the burner, so that as much heat radiation as possible can be used to cook the food, thus improving the cooking efficiency of the cooking appliance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a burner provided in an embodiment of this application;

[0025] Figure 2 for Figure 1 An explosion diagram;

[0026] Figure 3 for Figure 1 Another perspective illustration;

[0027] Figure 4 for Figure 1 A schematic diagram of the structure of the first shell in the middle;

[0028] Figure 5 for Figure 4 Another perspective illustration;

[0029] Figure 6 for Figure 1 A schematic diagram of the structure of the second shell in the middle;

[0030] Figure 7 for Figure 6 Another perspective illustration;

[0031] Figure 8 for Figure 1 A structural schematic diagram of the first and second shells is retained;

[0032] Figure 9 for Figure 8 Another perspective illustration;

[0033] Figure 10 for Figure 9 A cross-sectional view of the FF in the middle;

[0034] Figure 11 for Figure 1 A schematic diagram of the structure retaining the radial layered structure and the second shell;

[0035] Figure 12 for Figure 11 A cross-sectional view of GG.

[0036] Explanation of reference numerals in the attached figures

[0037] A. Combustion section; A1. Thermal radiation surface; A11. Thermal radiation sub-plane; B. Ejector section; C. Reference surface; B1. Expansion section; B2. Necked section; B3. Outlet; B4. Ejector port; 11. First shell; 11a. First flange; 111. First sub-plate; 111a. Combustion hole; 112. First half-tube; 112a. Section; 12. Second shell; 12a. Second flange; 12a1. First side; 12a2. Second side; 121. Second sub-plate; 121a. Cavity bottom wall; 121a1. Boss section; 121a5. Slope; 121a6. Protruding structure; 121b. Cavity side wall; 122. Second half-tube; 2. Radiating layered structure; 3. Connector. Detailed Implementation

[0038] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0039] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0041] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, references to terms such as "some embodiments," "examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present application. In this specification, the illustrative expressions 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 one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] One aspect of this application provides a cooking appliance, including a burner according to any embodiment of this application.

[0044] It should be noted that the specific type of cooking appliance is not limited here. For example, in some embodiments, the cooking appliance can be either a gas oven or a steam oven; in other embodiments, different functions can be integrated into the cooking appliance according to user needs, such as a gas oven integrated stove, to improve ease of use. This application describes the embodiments using a gas oven as an example.

[0045] For example, the cooking appliance includes a housing having a cooking chamber, in which a burner is disposed. It is understood that the burner generates heat by burning a combustible gas, and the heat generated by the burner radiates to the cooking chamber, which is capable of holding food to be cooked, thereby enabling the cooking of the food.

[0046] It should be noted that the specific location of the burner within the cooking cavity is not limited. For example, the burner can be located in the lower half of the cooking cavity to facilitate the heating of food with the heat generated by the burner; the burner can also be located in the upper half of the cooking cavity to reduce the amount of grease dripping from the food during heating onto the burner, thereby reducing the risk of the burner catching fire.

[0047] It should be noted that the upper half of the cooking cavity refers to the part whose dimension along the height direction of the cooking cavity is greater than 1 / 2 of the size of the cooking cavity; the lower half of the cooking cavity refers to the part whose dimension along the height direction of the cooking cavity is less than or equal to 1 / 2 of the size of the cooking cavity.

[0048] One embodiment of this application provides a burner; please refer to... Figures 1 to 3 The burner includes a combustion section A and an ejector section B connected to each other. The ejector section B is located at one end of the combustion section A, and the combustion section A and the ejector section B are in communication. It can be understood that the communication between the combustion section A and the ejector section B can form a channel for gas flow. The combustible gas mixture of fuel gas and air can enter the combustion section A through the ejector section B, which facilitates the generation of heat in the combustion section A to heat the food.

[0049] It should be noted that the specific connection direction between the combustion section A and the ejector section B is not limited.

[0050] Please refer to Figure 2 The combustion section A is flat in shape. It can be understood that when the combustion section A is installed in the cooking cavity, the thickness direction of the combustion section A is perpendicular to the plane of one of the inner walls of the cooking cavity, so that the combustion section A does not occupy too much space in the cooking cavity, so that there is enough space in the cooking cavity to hold the food to be cooked, thereby improving the space utilization of the cooking appliance.

[0051] It should be noted that the overall flat shape of the combustion section A means that the dimension of the combustion section A along the thickness direction is smaller than the dimension of the combustion section A along other directions.

[0052] Please refer to Figure 2 The combustion section A forms a heat radiation surface A1 on the surface of its first side in the thickness direction. At least one end of the combustion section A extends toward the first side in the first direction, so that the heat radiation surface A1 is concave overall. It can be understood that when the burner is installed in the cooking chamber, the food to be cooked is located on the concave side of the heat radiation surface A1, so that the heat radiation generated by the combustion section A can better coat the food to be cooked, and the surface of the food to be cooked can be heated evenly, thereby improving the cooking effect of the cooking appliance.

[0053] It should be noted that the first side of the combustion section A in the thickness direction refers to the side of the combustion section A facing the food to be cooked. That is, in the orthographic projection onto a plane parallel to the thickness direction of the combustion section A, the heat radiation surface A1 gradually approaches the food to be cooked from the middle region of the heat radiation surface A1 toward at least one end in the first direction.

[0054] It should be noted that the first direction refers to the direction perpendicular to the thickness of the combustion section A, such as... Figure 1 The direction indicated by the middle arrow.

[0055] In related technologies, the heat radiation surface of the combustion section is roughly planar. When the combustion section heats the food to be cooked, the heat radiation transmitted to the food to be cooked is unevenly distributed, which can easily lead to a large temperature difference between the edge and the center of the food to be cooked. This results in inconsistent cooking levels between the center and the edge of the food to be cooked, reducing the cooking effect of the cooking appliance.

[0056] The burner provided in this application extends at least one end of the burner toward the first side along the first direction. On the one hand, this makes the heat radiation surface A1 concave overall, and the food to be cooked is located on the concave side of the heat radiation surface A1. This allows the heat radiation emitted by the heat radiation surface A1 to better coat the food to be cooked, improving the uniformity of the heat radiation received by the food and making it easier for different parts of the food to cook at a more consistent degree during the heating process, thus improving the cooking effect of the cooking appliance. On the other hand, the concave heat radiation surface A1 can also be used to concentrate the heat radiation emitted by the burner, so that as much heat radiation as possible can be used to cook the food, thus improving the cooking efficiency of the cooking appliance.

[0057] In some embodiments, please refer to Figure 2 , Figure 4 and Figure 5 The burner includes a first sub-plate 111, a second sub-plate 121 arranged along the thickness direction, and a radial layered structure 2. The first sub-plate 111 and the second sub-plate 121 are joined together along the thickness direction to form a combustion section A. The radial layered structure 2 is stacked on the side of the first sub-plate 111 away from the second sub-plate 121.

[0058] It should be noted that the first sub-plate 111 has multiple combustion holes 111a, and the radial layered structure 2 will cover the combustion holes 111a.

[0059] It is understandable that the combustible gas in the combustion section A can be ejected and burned through the combustion hole 111a. The flame ejected from the combustion hole 111a can scorch the radiative layered structure 2, so that the radiative layered structure 2 can generate heat radiation and form a heat radiation surface A1 on the surface of the radiative layered structure 2 away from the first sub-plate 111. In addition, the radiative layered structure 2 can also block the air flow at the combustion hole 111a, so as to reduce the possibility of external ambient air flowing into the interior of the combustion section A through the combustion hole 111a, thereby causing backfire, and improving the safety of the burner.

[0060] It should be noted that the specific structure of the radial layered structure 2 is not limited.

[0061] It should be noted that the specific connection method of the radial layered structure 2 is not limited.

[0062] In some embodiments, please refer to Figures 8 to 12 The first sub-plate 111 has a first flange 11a at its edge, and the second sub-plate 121 has a second flange 12a at its edge. The second flange 12a includes a first side portion 12a1 and a second side portion 12a2 that are connected to each other. The first side portion 12a1 and the second side portion 12a2 are stacked along the thickness direction. The first flange 11a and the edge of the radial layered structure 2 are sealed between the first side portion 12a1 and the second side portion 12a2.

[0063] Understandably, on the one hand, the first side 12a1 and the second side 12a2 can be clamped by the first flange 11a, which can ensure the connection strength of the first sub-plate 111 and the second sub-plate 121, and improve the connection sealing of the first sub-plate 111 and the second sub-plate 121, so as to ensure the airtightness of the combustion part A, reduce the possibility of combustible gas leakage during the use of the burner, and improve the safety of the burner. On the other hand, by using the first side 12a1 and the second side 12a2 to hold the edge of the radial layer structure 2, the radial layer structure 2 can be stably fixed on the first sub-plate 111, so that the radial layer structure 2 can stably generate heat radiation under the heat of the combustion hole 111a.

[0064] It should be noted that the specific formation method of the first flange 11a is not limited; the specific formation method of the second flange 12a is not limited. For example, the second flange 12a is formed by folding the periphery of the second sub-plate 121 toward the first sub-plate 111. After folding, a part of the periphery forms the first edge 12a1, and the other part of the periphery forms the second edge 12a2.

[0065] In some embodiments, the first edge 12a1 and the second edge 12a2 are riveted together. This improves the connection strength between the first edge 12a1 and the second edge 12a2, stably clamping the first flange 11a and the radial layered structure 2 between the first edge 12a1 and the second edge 12a2, thereby strengthening the connection strength among the radial layered structure 2, the first sub-plate 111, and the second sub-plate 121.

[0066] In some embodiments, please refer to Figure 7 The burner includes a connector 3, one end of which passes through the first sub-plate 111, and the opposite ends of the connector 3 are respectively connected to the radial layered structure 2 and the second sub-plate 121. It is understood that the connector 3 establishes a connection between the radial layered structure 2 and the second sub-plate 121, allowing the radial layered structure 2 to be fixed relative to the second sub-plate 121, thereby improving the stability of the radial layered structure 2.

[0067] It should be noted that there is no limit to the specific number of connectors 3, nor is there any limit to the specific location of connectors 3.

[0068] In the embodiment where the first flange 11a and the edge of the radial layered structure 2 are sealed and sandwiched between the first side portion 12a1 and the second side portion 12a2, the connector 3 can be located in the middle region of the radial layered structure 2 to connect the middle region of the radial layered structure 2 and the second sub-plate 121. It is understood that the middle region of the radial layered structure 2 is far from the second flange 12a, so that at least part of the radial layered structure 2 is not clamped by the second flange 12a. In this way, the connector 3 can restrain the part of the radial layered structure 2 that is not clamped by the second flange 12a, thereby reducing the possibility of the radial layered structure 2 peeling off during the use of the burner.

[0069] In some embodiments, please refer to Figures 7 to 10 A portion of the second sub-plate 121 protrudes towards the first sub-plate 111 to form a protruding structure 121a6, and the first sub-plate 111 is connected to the protruding structure 121a6. It can be understood that the protruding structure 121a6 formed by the partial protrusion of the second sub-plate 121 serves two purposes: firstly, it connects with the first sub-plate 111, increasing the connection strength between the two sub-plates; secondly, the formation of the protruding structure 121a6 also improves the structural strength of the second sub-plate 121, reducing its deformation under the gravity load of the first sub-plate 111, thus ensuring the reliability of the second sub-plate 121.

[0070] In some embodiments, please refer to Figures 8 to 10The first sub-plate 111 abuts against and is riveted to the protruding structure 121a6. It is understood that the riveting of the first sub-plate 111 to the protruding structure 121a6 increases the connection strength between the first sub-plate 111 and the protruding structure 121a6, thereby increasing the connection strength between the first sub-plate 111 and the second sub-plate 121, thus ensuring the reliability of the burner.

[0071] In some embodiments, please refer to Figure 2 The ejector section B includes a first half-tube 112 and a second half-tube 122, which are joined together along the thickness direction. It is understood that the ejector section B is formed by joining the first half-tube 112 and the second half-tube 122, which can reduce the manufacturing difficulty of the ejector section B while meeting its precision requirements, thereby increasing the production speed of the burner.

[0072] It should be noted that the specific connection direction of the first half-pipe 112 and the second half-pipe 122 is not limited.

[0073] For example, please refer to Figure 7 The injection tube section has an expansion section B1 and an outlet B3. The outlet B3 connects the expansion section B1 and the combustion section A. The flow area of ​​the expansion section B1 increases along the gas flow direction. It can be understood that the expansion section B1 allows the combustible gas mixture of combustion gas and air in the injection tube section B to enter the combustion section A with a larger surface area. This facilitates the filling of different positions within the combustion section A with combustible gas, resulting in a more uniform distribution of the combustible gas. This ensures better uniformity of the flame ejected from different combustion holes 111a, and thus ensures a uniform distribution of heat radiation generated during burner operation.

[0074] For example, please refer to Figure 7 The ejector section B has a constricted section B2 and an ejector port B4. The constricted section B2 connects the ejector port B4 and the expansion section B1. The flow area of ​​the constricted section B2 decreases along the gas flow direction. It can be understood that when the combustion gas flowing in from the ejector port B4 passes through the constricted section B2, the flow velocity of the combustion gas increases due to the gradually decreasing flow area. This creates an adsorption effect, drawing air near the ejector port B4 into the ejector section B to form a mixed combustible gas of combustion gas and air, which helps improve the combustion efficiency of the combustion gas.

[0075] For example, please refer to Figure 3A portion of the outer surface of the first half-pipe 112 extends obliquely toward the second half-pipe 122 in the direction of airflow to form a cross-section 112a, which extends to the outer surface of the first sub-plate 111. It is understood that when the combustible gas in the ejector section B flows through the cross-section 112a, the cross-section 112a can guide the airflow to one side of the second half-pipe 122, so that the combustible gas entering the combustion section A maintains a certain distance from the first sub-plate 111. This reduces the amount of combustible gas flowing out of the combustion hole 111a near the first half-pipe 112 before the combustion section A is fully filled, thus improving the utilization rate of the combustible gas.

[0076] In some embodiments, please refer to Figure 4 , Figure 5 and Figure 7 The first half-pipe 112 and the first sub-plate 111 are constructed as an integral first housing 11, and the first half-pipe 112 and the first sub-plate 111 are constructed as an integral second housing 12. The first housing 11 and the second housing 12 are joined together along the thickness direction to form an interconnected combustion section A and an ejector section B. It can be understood that integrating a part of the ejector section B and a part of the combustion section A onto the same housing can not only ensure the precision requirements of the burner, but also eliminate the assembly process of splicing the ejector section B and the combustion section A, thereby reducing the manufacturing and assembly difficulty of the burner and improving the production speed of the burner.

[0077] In an embodiment where the first sub-plate 111 has a first flange 11a and the second sub-plate 121 has a second flange 12a, the first flange 11a extends along the edge of the first half-tube 112 and the second flange 12a extends along the edge of the second half-tube 122. In this way, the first flange 11a is sandwiched between the first side portion 12a1 and the second side portion 12a2, which can improve the connection strength between the first half-tube 112 and the second half-tube 122, thereby improving the connection strength between the first housing 11 and the second housing 12.

[0078] In some embodiments, the first housing 11 is a one-piece metal component; and / or, the second housing 12 is a one-piece metal component.

[0079] It should be noted that the above technical solutions include the following types: First, the first housing 11 is a one-piece metal part; Second, the second housing 12 is a one-piece metal part; Third, both the first housing 11 and the second housing 12 are one-piece metal parts.

[0080] It is understandable that the first housing 11 and / or the second housing 12 are integral metal parts. On the one hand, the metal parts can improve the structural strength of the first housing 11 and / or the second housing 12, thereby improving the overall structural strength of the burner, maintaining its shape during the use of the burner, and improving the service life of the burner. On the other hand, the metal parts have good heat transfer efficiency, which allows the burner to release more heat into the cooking cavity during the combustion process, thereby improving the energy utilization efficiency of the burner.

[0081] In some embodiments, please refer to Figure 9 and Figure 10 The second sub-plate 121 includes a cavity bottom wall 121a and a cavity side wall 121b extending along the edge of the cavity bottom wall 121a. It is understood that the cavity bottom wall 121a and the cavity side wall 121b enclose part of the internal space of the combustion section A. The dimensions of the cavity side wall 121b can increase the depth of the internal space of the combustion section A, allowing the combustion section A to accommodate more combustible gas and thus improve the combustion efficiency of the burner.

[0082] Please refer to Figure 6 and Figure 7 A portion of the bottom wall 121a of the cavity protrudes away from the first sub-plate 111 to form a boss portion 121a1. The boss portion 121a1 faces the ejector tube portion B and extends along the extension direction of the ejector tube portion B. The boss portion 121a1 is used to guide part of the airflow in the ejector tube portion B. It can be understood that the combustible gas flowing into the combustion section A from the ejector tube portion B flows along the extension direction of the boss portion 121a1, which facilitates the flow of combustible gas into a position in the combustion section A away from the ejector tube portion B, thereby improving the uniformity of the distribution of combustible gas in the combustion section A, thereby improving the uniformity of heat radiation of the burner and improving the cooking efficiency of the cooking appliance.

[0083] In some embodiments, please refer to Figures 8 to 10 Any part of the cavity bottom wall 121a is spaced apart from the first sub-plate 111. In this way, combustible gas can flow in the space between the cavity bottom wall 121a and the first sub-plate 111, so that the combustible gas can flow through various positions in the combustion section A, thereby improving the uniformity of the distribution of combustible gas in the combustion section A.

[0084] In some embodiments, please refer to Figure 3In the orthographic projection of a plane perpendicular to the extension direction of the ejector section B, a portion of the boss section 121a1 extends obliquely in the extension direction away from the ejector section B toward the direction close to the first sub-plate 111 to form a slope 121a5. The angle E between the slope 121a5 and the reference plane C is 10° to 25°, that is, 10°≤E≤25°. For example, the angle E can be 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 22°, 24° or 25°.

[0085] It should be noted that the reference plane C is perpendicular to the thickness direction of the burner.

[0086] In some embodiments, please refer to Figure 7 Projected onto a plane perpendicular to the thickness direction of the combustion section A, the burner has a symmetrical structure. It can be understood that the amount of heat radiation generated on both sides of the burner's symmetrical plane is consistent, ensuring that the food being cooked receives symmetrical heat radiation, thereby improving the cooking effect of the appliance.

[0087] It should be noted that the symmetrical structure of the burner means that when projected onto a plane perpendicular to the thickness direction of the combustion section A, the projection of the burner is a symmetrical figure.

[0088] In some embodiments, please refer to Figure 9 and Figure 10 Projected onto a plane perpendicular to the thickness direction of the combustion section A, the combustion section A extends towards the first side in the direction of its opposite ends in the first direction. It can be understood that the combustion section A extends towards the first side from its central region towards its opposite ends in the first direction to form a concave heat radiation surface A1. On the one hand, extending the combustion section A towards the first side increases the area of ​​the heat radiation surface A1 without increasing the size of the combustion section A along the first direction, thereby increasing the amount of heat radiation emitted by the burner and improving the cooking efficiency of the cooking appliance. On the other hand, by utilizing the relatively small overall thickness direction of the combustion section A, the concave heat radiation surface A1 formed by the combustion section A does not excessively occupy the space within the cooking cavity, thus improving the space utilization rate of the cooking appliance.

[0089] It should be noted that the specific shape of the thermal radiation surface A1 is not limited.

[0090] In some embodiments, the heat radiation surface A1 is a continuous curved surface, such as a sphere or an ellipsoid. It is understood that a continuous curved surface can improve the overall integrity of the heat radiation surface A1 and enhance the aesthetics of the combustion section A.

[0091] In other embodiments, please refer to Figure 10 and Figure 12The heat radiation surface A1 comprises multiple non-coplanar heat radiation sub-planes A11. These sub-planes A11 are projected onto a plane perpendicular to the thickness direction of the combustion section A, and are sequentially connected. It can be understood that the heat radiation surface A1, composed of multiple non-coplanar heat radiation sub-planes A11, facilitates its manufacturing and reduces the difficulty of burner manufacturing, thereby increasing the production speed of the burner.

[0092] It should be noted that the specific forming method of the heat radiation surface A1 is not limited. For example, it can be formed by bending a planar structure multiple times along the first direction.

[0093] It should be noted that in the embodiments of this application, "multiple" refers to two or more.

[0094] It should be noted that the specific included angles between the multiple non-coplanar thermal radiation subplanes A11 are not limited.

[0095] In some embodiments, please refer to Figure 10 and Figure 12 The included angle D between two adjacent heat radiating sub-planes A11 is 165° to 175°, i.e., 165° ≤ D ≤ 175°. For example, the included angle D can be 165°, 166°, 167°, 168°, 169°, 170°, 171°, 172°, 173°, 174°, or 175°. It is understandable that a reasonable included angle D between two adjacent heat radiating sub-planes A11 allows the heat radiation emitted from the heat radiating surface A1 to better coat the food being cooked, facilitating more uniform cooking of different parts of the food during the heating process and improving the cooking effect of the cooking appliance.

[0096] It should be noted that the angle D between two adjacent thermal radiating subplanes A11 refers to the angle between the normal vectors of the two adjacent thermal radiating subplanes A11, such as... Figure 12 As shown in the image.

[0097] Understandably, the slope 121a5 can guide the combustible gas flowing in from the ejector section B to the side of the burner away from the ejector section B, so that the combustible gas can better fill different positions of the combustion section A, ensuring the uniform distribution of combustible gas in the combustion section A, so that the combustible gas can burn completely and improve the energy utilization rate of the burner.

[0098] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions.

[0099] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A burner, characterized in that, include: A combustion section and an ejector section are connected to each other, the ejector section is located at one end of the combustion section, and the combustion section is in communication with the ejector section; The combustion section is generally flat, and a heat radiation surface is formed on the surface of the combustion section on a first side in the thickness direction. At least one end of the combustion section in the first direction extends toward the first side so that the heat radiation surface is generally concave. The first direction is perpendicular to the thickness direction of the combustion section.

2. The burner according to claim 1, characterized in that, Projected onto a plane perpendicular to the thickness direction of the combustion section, the combustion section extends toward the first side in the direction of opposite ends in the first direction.

3. The burner according to claim 1, characterized in that, The thermal radiation surface includes multiple thermal radiation sub-planes, which are not coplanar and are projected onto a plane perpendicular to the thickness direction of the combustion section. The multiple thermal radiation sub-planes are connected sequentially.

4. The burner according to claim 3, characterized in that, The included angle between two adjacent thermal radiation subplanes is 165° to 175°.

5. The burner according to claim 1, characterized in that, The burner has a symmetrical structure when projected onto a plane perpendicular to the thickness direction of the combustion section.

6. The burner according to claim 1, characterized in that, The burner includes a first sub-plate, a second sub-plate, and a radial layered structure arranged along the thickness direction. The first sub-plate and the second sub-plate are joined together along the thickness direction to form the combustion section. The radial layered structure is stacked on the side of the first sub-plate away from the second sub-plate.

7. The burner according to claim 6, characterized in that, The burner includes a connector, one end of which passes through a first sub-plate, and the opposite ends of the connector are respectively connected to the radial layered structure and the second sub-plate.

8. The burner according to claim 6, characterized in that, A portion of the second sub-plate protrudes toward the first sub-plate to form a protruding structure, and the first sub-plate is connected to the protruding structure.

9. The burner according to claim 8, characterized in that, The first sub-plate abuts against the protruding structure and is riveted to the protruding structure.

10. The burner according to claim 6, characterized in that, The ejector tube includes a first half-tube and a second half-tube, which are joined together along the thickness direction.

11. The burner according to claim 10, characterized in that, The first half-pipe and the first sub-plate are constructed as an integral first housing, and the first half-pipe and the first sub-plate are constructed as an integral second housing. The first housing and the second housing are joined together along the thickness direction to form the combustion section and the ejector section that are interconnected.

12. The burner according to claim 6, characterized in that, The first sub-plate has a first flange on its edge, and the second sub-plate has a second flange on its edge. The second flange includes a first side portion and a second side portion that are connected to each other. The first side portion and the second side portion are stacked along the thickness direction. The first flange and the edge of the radial layered structure are sealed between the first side portion and the second side portion.

13. The burner according to claim 12, characterized in that, The first side and the second side are riveted together.

14. The burner according to claim 6, characterized in that, The second sub-plate includes a cavity bottom wall, and a cavity side wall extends along the edge of the cavity bottom wall. A portion of the cavity bottom wall protrudes in a direction away from the first sub-plate to form a boss portion. The boss portion faces the ejector tube portion and extends along the extension direction of the ejector tube portion. The boss portion is used to guide part of the airflow of the ejector tube portion.

15. The burner according to claim 14, characterized in that, In a plane orthographic projection perpendicular to the extension direction of the ejector tube, a portion of the boss extends obliquely toward the first sub-plate in a direction away from the extension direction of the ejector tube to form a slope, the angle between the slope and the reference surface is 10° to 25°, and the reference surface is perpendicular to the thickness direction of the burner.

16. A cooking utensil, characterized in that, The burner includes any one of claims 1 to 15.

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