Burner and cooking device

Abstract

The utility model provides a burner and a cooking device. The combustor comprises an upper shell, a lower shell and a combustion assembly. The lower shell is provided with a containing cavity, an opening and a first flow channel, wherein the opening and the first flow channel are communicated with the containing cavity. The upper shell is provided with a second flow channel, the upper shell covers the opening, the side wall of the first flow channel and the side wall of the second flow channel define an ejection flow channel, and the ejection flow channel communicates with the containing cavity; the combustion assembly is arranged in the containing cavity and located between the lower shell and the upper shell. According to the combustor, the injection effect can be improved, and the problem of fuel leakage can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a burner and a cooking device. BACKGROUND

[0002] The burner is generally used as a combustion device using gas or liquid fuel, mixes fuel and air, sprays them, and then makes them burn, thereby providing heat required for cooking and the like.

[0003] In the existing cooking device using the burner as a heating source, the junction of the injection pipe and the burner is prone to increase the resistance of fuel entering the burner from the injection pipe, poor injection effect, and easy fuel leakage. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a burner and a cooking device to improve the injection effect and solve the problem of fuel leakage.

[0005] The present application provides a burner, which comprises an upper shell, a lower shell and a combustion assembly, the lower shell is provided with a receiving cavity, an opening and a first flow channel communicated with the receiving cavity; the upper shell is provided with a second flow channel, and the upper shell cover is arranged on the opening; the side wall of the first flow channel and the side wall of the second flow channel jointly form an injection flow channel, and the injection flow channel is communicated with the receiving cavity; the combustion assembly is arranged in the receiving cavity and located between the lower shell and the upper shell.

[0006] Among them, the included angle between the axial direction of the flow guide hole and the cavity wall provided with the flow guide hole is less than 90°.

[0007] Among them, the injection flow channel comprises a bend pipe section communicated with the flow guide hole and a straight pipe section connected with the bend pipe section; the lower shell and the upper shell are both arranged in a rectangular shape, and the straight pipe section is arranged in parallel with the side of the rectangle.

[0008] Among them, the upper shell comprises a first body part and a first extension part, the first body part is arranged on the opening; the first extension part is connected with the first body part and forms a recess part away from the lower shell to form the second flow channel; the recess part is arranged separately from the first body part; the lower shell comprises a second body part and a second extension part, the second body part forms the receiving cavity; the second extension part is connected with the second body part and forms the first flow channel, and the first flow channel is communicated with the receiving cavity.

[0009] Among them, the upper shell comprises a frame, forms a through hole and a second flow channel, and is connected with the lower shell; the combustion assembly is arranged in the through hole and located between the frame and the bottom wall of the receiving cavity.

[0010] Among them, the second extension part extends from the first outer peripheral area of the bottom wall of the receiving cavity, and the first outer peripheral area is provided with a groove.

[0011] Among them, the middle area of the bottom wall is formed with a protruding part towards the upper shell.

[0012] The combustion assembly comprises a radiation plate and a porous carrier plate, the radiation plate is located on one side of the upper shell close to the opening, and the through hole of the porous carrier plate is in communication with the accommodating cavity and is arranged between the radiation plate and the bottom wall of the accommodating cavity.

[0013] The upper shell comprises a metal upper shell, the lower shell comprises a metal lower shell, and the porous carrier plate comprises a metal porous carrier plate.

[0014] The application provides a cooking device comprising a body and the above-mentioned burner, the body is provided with a cooking cavity, and the burner is arranged in the cooking cavity.

[0015] The application has the beneficial effects that: the burner provided by the application comprises an upper shell, a lower shell and a combustion assembly, the lower shell is provided with an accommodating cavity, an opening in communication with the accommodating cavity and a first flow channel; the upper shell is provided with a second flow channel, and the upper shell cover is arranged on the opening, the side wall of the first flow channel and the side wall of the second flow channel jointly enclose an ejecting flow channel, and the ejecting flow channel is in communication with the accommodating cavity; the combustion assembly is arranged in the accommodating cavity and located between the lower shell and the upper shell. The application fixes the combustion assembly through the upper shell and the lower shell, improves the structural stability of the burner, in addition, the upper shell and the lower shell jointly enclose the ejecting flow channel, which not only can improve the poor sealing performance of the existing ejecting pipe and the burner connection and the fuel leakage problem, but also can improve the smoothness of the connection between the ejecting flow channel and the accommodating cavity, thereby reducing the flow resistance of the fuel entering the accommodating cavity from the ejecting pipe, improving the ejecting effect, and further improving the combustion performance of the burner. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 is a structural schematic view of one embodiment of the burner provided by the application;

[0018] Figure 2 is Figure 1 is an explosion schematic view of one embodiment of the burner in the embodiment;

[0019] Figure 3 is a structural schematic view of one embodiment of the cooking device provided by the application. DETAILED DESCRIPTION

[0020] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of protection of the present application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0022] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0023] The present application provides a burner, wherein the fuel used in the burner is generally gas, wherein the gas can be a mixed gas capable of combustion and / or combustion support, and the fuel can also be a liquid fuel with fluidity. The following embodiments of the present application will be described taking the burner using gas as the fuel as an example. Referring to Figures 1 to 2 , Figure 1 is a structural schematic diagram of an embodiment of the burner provided by the present application, Figure 2 is Figure 1 is an explosion schematic diagram of an embodiment of the burner in the embodiment, as Figures 1 to 2 shown, the burner 10 includes an upper shell 110, a lower shell 120 and a combustion assembly. The lower shell 120 is provided with a receiving cavity 122, an opening 121 and a first flow channel 123 in communication with the receiving cavity 122; the upper shell 110 is provided with a second flow channel 111, and the upper shell 110 covers the opening 121, the side wall of the first flow channel 123 and the side wall of the second flow channel 111 jointly form an ejector flow channel, and the ejector flow channel is in communication with the receiving cavity 122; the combustion assembly is arranged in the receiving cavity 122 and located between the lower shell 120 and the upper shell 110.

[0024] The combustion assembly is provided with a through hole 131 in communication with the accommodating cavity 122, and the injection flow channel guides the fuel gas to the accommodating cavity 122, and the fuel gas in the accommodating cavity 122 is combusted on the side of the combustion assembly away from the accommodating cavity 122 to form a combustion surface. The combustion surface of the combustion assembly can be between the upper shell 110 and the lower shell 120, and specifically, the upper shell 110 is provided with a through hole in communication with the combustion surface. Alternatively, the combustion surface of the combustion assembly can be exposed to the upper shell 110, for example, the upper shell 110 is provided with a through hole with the same size as the combustion surface at the position corresponding to the combustion surface, so that the combustion surface is exposed to the upper shell 110 through the through hole. Alternatively, the combustion surface of the combustion assembly can be exposed to the lower shell 120, and the combustion surface is not in the same plane as the plane in which the opening is located and the plane in which the flow guide opening in communication with the accommodating cavity 122 of the first flow channel is located.

[0025] The burner 10 of the embodiment includes an upper shell 110, a lower shell 120 and a combustion assembly, wherein the combustion assembly is located between the upper shell 110 and the lower shell 120. The application fixes the combustion assembly by the upper shell 110 and the lower shell 120 to improve the structural stability of the burner 10. In addition, the upper shell 110 and the lower shell 120 form an injection flow channel, which not only improves the poor sealing at the connection between the existing injection pipe and the burner 10 and the problem of easy fuel leakage, but also improves the smoothness of the connection between the injection flow channel and the accommodating cavity 122, thereby reducing the flow resistance of the fuel gas entering the accommodating cavity 122 from the injection pipe, improving the injection effect, and further improving the combustion performance of the burner 10.

[0026] Alternatively, the opening 121 of the accommodating cavity 122 of the embodiment is arranged opposite to the bottom wall of the accommodating cavity 122 and has the same size, that is, the opening 121 is an open opening. In other embodiments, the accommodating cavity 122 can also be provided with a top wall, and the opening 121 is arranged on the top wall.

[0027] Alternatively, in order to improve the combustion performance of the burner 10, the accommodating cavity 122 is provided with a flow guide opening in communication with the injection flow channel, and the angle between the axial direction of the flow guide opening and the cavity wall provided with the flow guide opening is less than 90°. For example, the angle between the axial direction of the flow guide opening and the cavity wall provided with the flow guide opening is 40°, 45°, 50°, 55°, 60°, 85°, etc. The burner 10 of the embodiment can reduce the flow loss caused by the change of the flow channel direction after the fuel gas enters the accommodating cavity 122 from the injection flow channel, thereby optimizing the injection effect and further improving the combustion performance of the burner 10.

[0028] Optionally, the axial direction of the flow guide hole is perpendicular to the axial direction of the opening 121, and the combustion assembly cover is arranged on the opening, that is, the axial direction of the flow guide hole is parallel to the extending direction of the combustion assembly, that is, the incident direction of the fuel input by the flow guide hole is parallel to the extending direction of the combustion assembly, so that the fuel input by the flow guide hole can more quickly contact more areas of the combustion assembly, and the uniformity of the fuel contacting the combustion assembly can be improved, thereby the heat conduction efficiency of the heat generated by the fuel combustion to the combustion assembly can be improved, and the heat radiation effect of the burner can be improved, and the user experience can be improved.

[0029] Optionally, the injection flow channel includes a bend pipe section in communication with the flow guide hole and a straight pipe section connected with the bend pipe section; the lower shell 120 and the upper shell 110 are arranged in a rectangular shape, and the straight pipe section is arranged in parallel with the side of the rectangular shape. The side of the rectangular shell is provided with the flow guide hole, and the straight pipe section is arranged in parallel with the side, so that when the gas enters the accommodation cavity 122 from the bend pipe section, the included angle between the gas inlet direction and the side of the rectangular shell is not 90°, which can reduce the flow loss caused by the change of the flow channel direction after the gas enters the accommodation cavity 122 from the injection flow channel, thereby optimizing the injection effect, and further improving the combustion performance of the burner 10.

[0030] Optionally, the upper shell 110 includes a first body portion and a first extension portion connected with the first body portion, and the lower shell 120 includes a second body portion and a second extension portion connected with the second body portion, the second body portion forms the accommodation cavity 122, and the first body portion covers the opening 121. The first extension portion forms a recess portion away from the lower shell 120 to form the second flow channel 111; the second extension portion forms the first flow channel 123, and the first flow channel 123 is in communication with the accommodation cavity 122. As can be known, the second flow channel 111 is in communication with the accommodation cavity 122 through the first flow channel 123 after being enclosed by the first flow channel 123, which can reduce the gas loss caused by the gas directly entering the inside of the combustion assembly and the side of the combustion assembly away from the bottom wall of the accommodation cavity 122.

[0031] Optionally, the second extension portion extends from a first outer peripheral region of the bottom wall of the accommodation cavity 122, and the first outer peripheral region is provided with a groove 124. The distance from the bottom wall of the groove 124 to the opening 121 is greater than the distance from the bottom wall of the accommodation cavity 122 not in the first outer peripheral region to the opening 121, so the space at the position of the groove 124 is larger. Therefore, after the fuel flows into the accommodation cavity 122, the cross-sectional area of the flow channel through which the fuel flows decreases when flowing to the region of the bottom wall away from the flow guide hole, thereby the flow rate of the fuel at this position can be increased, so that the fuel input from the flow guide hole can be quickly guided to the space of the accommodation cavity 122 away from the flow guide hole, thereby the uniformity of the fuel distribution in the accommodation cavity 122 can be improved, and the combustion performance of the burner 10 can be improved.

[0032] Optionally, the middle region of the bottom wall of the accommodating cavity 122 is formed with a protrusion 125 towards the upper shell 110. The protrusion 125 is configured to increase the structural strength of the lower shell 120 in a high-temperature working state, thereby improving the stability of the burner 10.

[0033] Optionally, the upper shell 110 includes a frame body forming the through hole 112 and the second flow channel 111, and the frame body is connected with the lower shell 120. The combustion assembly is arranged in the through hole 112 and between the frame body and the bottom wall of the accommodating cavity 122. As can be seen, the combustion assembly cover is arranged in the opening 121 of the lower shell 120 and in the through hole 112 of the frame body. When the burner 10 is working, the part of the combustion assembly exposed from the through hole 112 can serve as a combustion surface.

[0034] Optionally, the combustion assembly includes a radiation plate 140 and a porous carrier plate 130. The radiation plate 140 is arranged on the side of the upper shell 110 close to the opening. The porous carrier plate 130 is arranged between the radiation plate 140 and the bottom wall of the accommodating cavity 122, and the via holes of the porous carrier plate 130 are in communication with the accommodating cavity 122. The radiation plate 140 can be used to stabilize the flame of the porous carrier plate 130. When the combustion state of the porous carrier plate 130 is affected, the radiation plate 140 can support the stability of the flame and enhance the radiation effect, thereby improving the combustion performance of the burner 10.

[0035] Optionally, the via holes 131 of the porous carrier plate 130 can be any one or a plurality of shapes such as a rectangle, a circle, an ellipse, etc. The specific type of the via holes 131 is not limited herein.

[0036] Optionally, the porous carrier plate 130 includes a metal porous carrier plate, such as an aluminum-plated porous carrier plate 130, a zinc-plated porous carrier plate 130, etc. The porous carrier plate 130 of the present embodiment includes a metal porous carrier plate. The thickness of the metal porous carrier plate is relatively small compared with the thickness of a ceramic porous carrier plate 130. The overall thickness of the burner 10 can be reduced, and the burner 10 can be miniaturized. The burner 10 can be placed or stored in a small space. Further, the burner 10 can reduce the occupation of the cooking space in a cooking device provided with the burner 10.

[0037] In other embodiments, the porous carrier plate 130 can also be a ceramic porous carrier plate 130. The ceramic porous carrier plate 130 can enhance the strength of the combustion surface, so that the burner 10 does not need to increase an additional support frame, and the cost of the burner 10 can be reduced.

[0038] Optionally, the via holes 131 are uniformly distributed on the plate body of the porous carrier plate 130, so that the flames on the porous carrier plate 130 can be uniformly distributed, thereby uniformly distributing the heat of the combustion surface, and further improving the combustion performance of the burner 10.

[0039] Optionally, the radiation plate 140 comprises a metal mesh radiation plate, and specifically, the metal mesh radiation plate is an iron-chromium-aluminum alloy metal mesh, which has the advantage of high temperature resistance.

[0040] Optionally, the upper shell 110 of the present embodiment comprises a metal upper shell, the lower shell 120 comprises a metal lower shell, and the porous carrier plate 130 comprises a metal porous carrier plate. The metal upper shell can be an aluminum-plated upper shell, a zinc-plated upper shell, etc. The metal lower shell can be an aluminum-plated lower shell, a zinc-plated lower shell, etc. The metal porous carrier plate can be an aluminum-plated porous carrier plate 130, a zinc-plated porous carrier plate 130, etc. The burner 10 of the present embodiment is composed of a metal upper shell, a metal lower shell, and a metal porous carrier plate, which can reduce the overall thickness of the burner 10, miniaturize the burner 10, and facilitate the placement or storage of the burner 10 in a small space; and can reduce the occupation of the cooking space in the cooking device provided with the burner 10.

[0041] Optionally, in order to improve the combustion performance of the burner 10, the burner 10 further comprises a flow divider. The flow divider is arranged in the accommodating cavity 122 and located at the entrance of the injection flow channel and the accommodating cavity 122. The flow divider is used to divide the gas entering the accommodating cavity 122 from the entrance to different areas of the accommodating cavity 122, so that the gas in the opening 121 area is uniformly distributed, thereby the heat distribution of the combustion surface is uniform, and the combustion performance of the burner 10 is improved.

[0042] Optionally, the burner 10 further comprises an ejector, which is partially arranged in the injection flow channel and in communication with the injection flow channel. The ejector is used to mix the gas with air. The ejector comprises an injection pipe and / or a Venturi tube.

[0043] Optionally, the shape of the flow guide opening can be rectangular or circular, without limitation to the specific shape.

[0044] Optionally, the burner 10 of the embodiment comprises a metal upper shell, a metal mesh radiation plate, a metal porous carrier plate and a metal lower shell arranged in sequence. The metal upper shell is provided with a through hole 112 and a second flow channel 111, the metal lower shell is provided with a receiving cavity 122, an opening 121 and a first flow channel 123 in communication with the receiving cavity 122, the metal upper shell cover is arranged on the opening 121, the through hole 112 is arranged corresponding to the opening 121, the metal porous carrier plate and the metal mesh radiation plate are arranged between the bottom wall of the receiving cavity 122 and the metal upper shell, and the metal mesh radiation plate is arranged in the through hole 112. The part of the metal mesh radiation plate exposed from the through hole 112 can be used as the combustion surface of the burner 10. The connection between the metal porous carrier plate and the metal mesh radiation plate can be riveting fixation of the edges of the metal porous carrier plate body and the metal mesh radiation plate body, for example, the edge of the metal porous carrier plate is provided with a flange on one side of the metal mesh radiation plate, the edge of the metal mesh radiation plate is arranged in the flange, and the metal mesh radiation plate and the metal porous carrier plate are riveted and fixed through the flange; or the edge of the metal mesh radiation plate is provided with a flange on one side of the metal porous carrier plate, the edge of the metal porous carrier plate is arranged in the flange, and the metal mesh radiation plate and the metal porous carrier plate are riveted and fixed through the flange; or the metal porous carrier plate and the metal mesh radiation plate can be fixed by welding. The metal upper shell and the metal lower shell can be riveted and fixed at the edges of the first body part and the second body part, and the metal porous carrier plate and the metal mesh radiation plate are fixed and sealed at the same time; or the metal upper shell and the metal lower shell can be fixed by welding.

[0045] The gas enters the receiving cavity 122 through the injection flow channel, passes through the metal porous carrier plate and the metal mesh radiation plate, and is ignited on the outer surface of the metal mesh radiation plate.

[0046] Optionally, the burner is an infrared burner.

[0047] The cooking device provided by the present application comprises a burner, wherein the burner is any one of the above-mentioned burner embodiments, and the specific structure is not described here. The cooking device of the embodiment comprises a burner, wherein the burner comprises an upper shell, a lower shell and a combustion assembly, the combustion assembly is fixed by the upper shell and the lower shell, and the structural stability of the burner is improved. In addition, the upper shell and the lower shell form an injection flow channel, which not only improves the poor sealing of the connection between the existing injection pipe and the burner and the easy leakage of fuel, but also improves the smoothness of the connection between the injection flow channel and the receiving cavity, thereby reducing the flow resistance of the gas entering the receiving cavity from the injection pipe, improving the injection effect, and improving the cooking performance of the cooking device.

[0048] Optionally, referring to Figure 3 , Figure 3 is a structural schematic diagram of an embodiment of the cooking device provided by the present application, asFigure 3 As shown, the cooking device 20 comprises a body 210 and a burner 220. The body 210 is provided with a cooking cavity 211, and the burner 220 is arranged in the cooking cavity 211, and a combustion surface of the burner faces into the cooking cavity. The combustion surface can directly serve as a side wall of the cooking cavity. Specifically, the burner 220 is arranged at a top of the cooking cavity 211.

[0049] Optionally, the cooking device 20 can be a gas oven, a smoking and roasting all-in-one machine, or a gas stove, but is not limited thereto.

[0050] The above is merely an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A burner, characterized by The burner comprises: a lower shell provided with a receiving cavity, an opening and a first flow channel in communication with the receiving cavity; an upper shell provided with a second flow channel, the upper shell covering the opening, a side wall of the first flow channel and a side wall of the second flow channel forming an ejector flow channel in communication with the receiving cavity; a combustion assembly arranged in the receiving cavity between the lower shell and the upper shell.

2. The burner according to claim 1, wherein: the receiving cavity is provided with a flow guide opening in communication with the ejector flow channel, an angle between an axial direction of the flow guide opening and a cavity wall provided with the flow guide opening being less than 90°.

3. The burner of claim 2, wherein the ejector flow channel comprises a bend pipe section in communication with the flow guide opening and a straight pipe section connected to the bend pipe section; the lower shell and the upper shell are both arranged in a rectangular shape, the straight pipe section being arranged in parallel with a side of the rectangle.

4. The burner of claim 1, wherein the upper shell comprises: a first body portion covering the opening; a first extension portion connected to the first body portion and forming a recess away from the lower shell to form the second flow channel, the recess being arranged apart from the first body portion; the lower shell comprises: a second body portion forming the receiving cavity; a second extension portion connected to the second body portion and forming the first flow channel in communication with the receiving cavity.

5. The burner of claim 1, wherein the upper shell comprises: a frame forming a through hole and the second flow channel and connected to the lower shell; the combustion assembly is arranged in the through hole between the frame and a bottom wall of the receiving cavity.

6. The burner according to claim 4, wherein: the second extension portion extends from a first outer peripheral area of the bottom wall of the receiving cavity, the first outer peripheral area being provided with a groove.

7. The burner of claim 6, wherein a middle area of the bottom wall is formed with a protrusion portion towards the upper shell.

8. The burner of claim 1, wherein the combustion assembly comprises: a radiation plate arranged on a side of the upper shell close to the opening; a porous carrier plate, a via of the porous carrier plate being in communication with the receiving cavity and arranged between the radiation plate and a bottom wall of the receiving cavity.

9. The burner of claim 8, wherein the upper shell comprises a metal upper shell, the lower shell comprises a metal lower shell, and the porous carrier plate comprises a metal porous carrier plate.

10. A cooking apparatus characterized by comprising: The burner according to any one of claims 1-9 is arranged in a cooking cavity of a body. ​

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