Burner base, burner and hob

Abstract

This utility model relates to the field of kitchen appliances, and specifically discloses a burner base, a burner, and a stove. The burner base includes: a shell; an outer ring ejector channel and an outer ring gas chamber that are interconnected within the shell; one or more protrusions protruding outwards from the outer periphery of the outer ring gas chamber, the internal cavity of which communicates with the outer ring gas chamber. When the flame flashes back, the gas-air mixture in the outer ring gas chamber of the burner base will gather into a vortex within the protrusion, making it difficult to diffuse, increasing the resistance to flame flashback, and causing the flame to extinguish after becoming oxygen-deficient, thus preventing continued combustion.

Description

Technical Field

[0001] This utility model relates to the field of kitchen utensils, and in particular to a burner base, burner, and stove. Background Technology

[0002] The burner base, serving as the intermediate structure connecting the injector and the mixing chamber, is primarily used to rectify the mixture of fuel gas and air. Typically, the burner base consists of an inner ring fuel gas passage and an outer ring fuel gas passage, with the inner ring located in the center and the outer ring surrounding it.

[0003] The current base has an outer ring gas channel that rises from the outside. The design of the rising slope is unreasonable, resulting in a large outer ring gas channel cavity. This reduces the aerodynamic performance of the gas inside the cavity, making it prone to generating vortices and thus reducing the ejection performance.

[0004] At the same time, when the flame is turned off or reduced, the airflow speed drops rapidly, and a lot of combustible gas remains in the large cavity, causing the flame to spread into the cavity and making it easy for backfire to occur in the burner. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defect in the prior art that backfire easily occurs in the burner when the flame is turned off or reduced, and to provide a burner base, burner and stove.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A burner base includes: a housing;

[0008] The housing is provided with an outer ring ejector channel and an outer ring gas chamber that are interconnected. The outer periphery of the outer ring gas chamber is provided with one or more protrusions that protrude towards the outer periphery. The internal cavity of the protrusion is connected to the outer ring gas chamber.

[0009] In this design, when the flame flashes back, the gas-air mixture in the outer ring combustion chamber of the burner base will gather into a vortex in the protrusion, making it difficult to diffuse and increasing the resistance to flame flashback. The flame will then extinguish due to oxygen deficiency and will not continue to burn.

[0010] Preferably, the protrusion is formed in an irregular shape.

[0011] In this design, the protrusion is formed into an irregular shape, which makes it easier for gas to gather into a vortex inside, making it difficult for the gas to diffuse and increasing the resistance to flame flashback.

[0012] Preferably, the multiple protrusions are evenly arranged circumferentially.

[0013] In this design, multiple protrusions are evenly arranged circumferentially, which can form gas vortices throughout the entire circumference of the burner base, increasing the resistance to flame flashback.

[0014] Preferably, the protrusion includes a plurality of protrusions that protrude toward the outer periphery, and the plurality of protrusions are spaced apart.

[0015] In this design, each protrusion forms multiple small bumps, which can further increase the number of gas vortices and increase the resistance to flame flashback.

[0016] Preferably, the protrusion includes two protrusions.

[0017] Preferably, the protrusion extends along the entire vertical direction of the housing.

[0018] In this design, the protrusion extends along the entire vertical direction of the shell, thus creating a stronger vortex within the protrusion.

[0019] Preferably, the burner base is used for a bottom-inlet burner.

[0020] Preferably, the side connecting the outer ring ejector channel and the outer ring gas chamber is open.

[0021] In this design, the gas can be supplied from the entire side of the outer ring gas chamber, resulting in a higher gas supply.

[0022] A burner comprising the burner base as described above.

[0023] A stove that includes the burner described above.

[0024] The positive and progressive effects of this invention are as follows: when the flame flashes back, the gas-air mixture in the outer ring gas chamber of the burner base will gather into a vortex in the protrusion, making it difficult to diffuse and increasing the resistance to flame flashback. The flame will then extinguish due to oxygen depletion and will not continue to burn. Burners and stoves with the above-mentioned burner base have the same effects. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a burner according to an embodiment of the present invention.

[0026] Figure 2 This is an exploded structural diagram of a burner according to an embodiment of the present invention.

[0027] Figure 3 This is a cross-sectional structural diagram of a burner according to an embodiment of the present invention.

[0028] Figure 4 This is a three-dimensional structural diagram of a burner base according to an embodiment of the present invention.

[0029] Figure 5 This is a three-dimensional structural schematic diagram of a burner base according to an embodiment of the present invention.

[0030] Figure 6 This is a top view of a burner base according to an embodiment of the present invention.

[0031] Figure 7 This is a simulation diagram of a burner base according to an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached drawings: Burner 100; Flame cap 110; Intermediate layer 120; Ejector 130; Burner base 140; Shell 141; Outer ring ejector channel 151; Inner ring ejector channel 152; Outer ring gas chamber 153; Guide surface 154; Inner ring gas chamber 155; Outer ring mixing chamber 157; Protrusion 158; Raise 159; Mounting part 161; Mounting hole 162; Vortex 201. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and by way of embodiments, but the present invention is not limited to the scope of the embodiments thereon.

[0034] like Figure 1-3 As shown, this embodiment provides a burner 100, which includes a flame cap 110, an intermediate layer 120, a burner base 140, and an ejector 130. The flame cap 110, the intermediate layer 120, and the burner base 140 are arranged sequentially from top to bottom. The ejector 130 includes an outer ring ejector tube and an inner ring ejector tube, which are respectively connected to the outer ring ejector channel 151 and the inner ring ejector channel 152 of the burner base 140.

[0035] like Figure 4-6 As shown, the burner base 140 includes: a housing 141; the housing 141 is provided with an outer ring ejector channel 151 and an outer ring gas chamber 153 that are interconnected; the outer peripheral edge of the outer ring gas chamber 153 is provided with one or more protrusions 158 facing the outer peripheral side protrusions 159, and the internal cavity of the protrusions 158 is connected to the outer ring gas chamber 153.

[0036] When the flame flashes back, the gas-air mixture in the outer ring gas chamber 153 of the burner base 140 will gather into a vortex in the protrusion 158, which is not easy to diffuse, increasing the resistance to flame flashback. The flame will be extinguished after being depleted of oxygen and will not continue to burn.

[0037] In this embodiment, the protrusion 158 is integrally formed on the outer periphery of the housing 141, forming an outwardly protruding cavity inside. The wall thickness of the protrusion 158 is the same as the wall thickness of the outer periphery of the housing 141, and the wall of the protrusion 158 is continuous and integral with the outer periphery of the housing 141. In other embodiments, the protrusion 158 may also be provided separately relative to the housing 141, or the wall thickness of the protrusion 158 may be inconsistent with the wall thickness of the housing 141.

[0038] In this embodiment, the internal cavity of the protrusion 158 is completely connected to the outer annular gas chamber 153 without any obstruction, forming a straight-in-straight-out structure. In other embodiments, the internal cavity of the protrusion 158 may also be connected to the outer annular gas chamber 153 through a channel or opening smaller than the entire width of the protrusion 158.

[0039] The burner base 140 includes a protrusion 158 formed in an irregular shape. The irregular shape of the protrusion 158 makes it easier for gas to accumulate into a vortex inside, making it difficult for the gas to diffuse and increasing the resistance to flame flashback.

[0040] Here, "irregular shape" refers to an irregular shape relative to regular shapes such as semicircles and rectangles. In this embodiment, the protrusion 158 forms an ear-like shape, creating multiple "protrusions 159," which are small vortex accommodating portions. Any shape that can produce such small vortex accommodating portions falls within the scope of "irregular shape."

[0041] Multiple protrusions 158 are evenly arranged circumferentially. The evenly arranged multiple protrusions 158 can form gas vortices throughout the entire circumference of the burner base 140, increasing the resistance to flame flashback.

[0042] The protrusion 158 includes a plurality of protrusions 159 projecting outward toward the outer periphery, the plurality of protrusions 159 being spaced apart. Each protrusion 158 forms a plurality of small protrusions 159, which can further increase the number of gas vortices and increase flame backfire resistance.

[0043] In this embodiment, the protrusion 158 includes two protrusions 159. Of course, those skilled in the art can set the number of protrusions 159 as needed, and it is not limited to two.

[0044] The protrusion 158 protrudes throughout the entire vertical direction of the housing 141. Because the protrusion 158 extends throughout the entire vertical direction of the housing 141, the vortices formed within the protrusion 158 are stronger. Alternatively, the protrusion 158 may extend only in a portion of the vertical direction, for example, only in the lower half of the burner base 140, or only in the upper half of the burner base 140.

[0045] The outer periphery of the protrusion 158 is also provided with a mounting part 161, which is used to connect with the intermediate layer 120. The mounting part 161 is provided with a mounting hole 162, which is located in the recess between the two protrusions 159. This recess can separate the two protrusions 159, effectively utilizing the space. The mounting part 161 is connected and fixed to the intermediate layer 120 by threaded components such as bolts and screws passing through the mounting hole 162.

[0046] The outer ring ejector channel 151 is open on the side connecting to the outer ring gas chamber 153. This arrangement allows gas to be supplied from the entire side of the outer ring gas chamber 153, resulting in a higher gas supply.

[0047] In addition, the outer ring gas chamber 153 is provided with a guide surface 154, which extends upward from the connection between the outer ring ejector channel 151 and the outer ring gas chamber 153 and forms an upwardly convex parabolic shape.

[0048] By designing the guide surface 154 between the outer ring ejector channel 151 and the outer ring gas chamber 153 into an upwardly convex parabolic shape, the aerodynamic performance of the gas is preserved, while turbulence is reduced and ejection performance is improved, thereby enhancing the combustion efficiency of the burner 100.

[0049] The housing 141 is also provided with an inner ring gas chamber 155, which is connected to the inner ring ejector channel 152.

[0050] The housing 141 also includes a connecting hole and an outer ring mixing chamber 157. The outer ring mixing chamber 157 is located above the outer ring gas chamber 153. The connecting hole is located in the intermediate layer 120 between the outer ring mixing chamber 157 and the outer ring gas chamber 153, connecting the two. Gas enters the outer ring gas chamber 153 from the ejector 130 via the outer ring ejector channel 151 for mixing, then enters the outer ring mixing chamber 157 through multiple connecting holes, and finally flows out from the flame holes of the outer ring burner cap 110.

[0051] The burner 100 in this embodiment is a bottom-inlet burner 100. The burner base 140 is used for the bottom-inlet burner 100. The bottom-inlet burner 100 differs from the top-inlet burner 100. In the top-inlet burner 100, the primary injection is above the panel, and the gas travels very shortly from the nozzle to the flame outlet of the burner cap 110. This results in a smaller gas-air mixing chamber, which is prone to uneven mixing and requires expansion. However, in the bottom-inlet burner 100, the gas travels longer from the nozzle to the flame outlet of the burner cap 110, which can easily lead to flow dead zones and backflow. The upward-convex guide surface 154 structure reduces the volume space, thus achieving a better effect and reducing the generation of flow dead zones and backflow.

[0052] The guide surface 154 is the entire bottom surface of the outer annular combustion chamber 153, see [reference]. Figure 5 The guide surface 154, when viewed along the axis of the outer ring ejector channel 151, exhibits a parabolic shape. The side of the outer ring ejector channel 151 connecting to the outer ring gas chamber 153 is open. This arrangement allows gas to be supplied from the entire side of the outer ring gas chamber 153, resulting in a higher gas supply volume.

[0053] Figure 7 This is a simulation diagram of a burner base 140 according to an embodiment of the present invention. Figure 7 It can be clearly seen that a vortex 201 is formed within the protrusion 159 of the protrusion 158 of the burner base 140. When the flame flashes back, the gas-air mixture in the outer ring gas chamber 153 of the burner base 140 will gather into a vortex within the protrusion 158, making it difficult to diffuse. This increases the resistance to flame flashback, and the flame will extinguish after being depleted of oxygen, and will not continue to burn.

[0054] This embodiment also provides a stove, which includes the burner 100 as described above.

[0055] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship of the device or component during normal use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation at any time, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model in this respect.

[0056] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A burner base, characterized in that, It includes: case; The housing is provided with an outer ring ejector channel and an outer ring gas chamber that are interconnected. The outer peripheral edge of the outer ring gas chamber is provided with one or more protrusions that protrude towards the outer peripheral side, and the internal cavity of the protrusions is connected to the outer ring gas chamber.

2. The burner base as described in claim 1, characterized in that, The protrusion is formed into an irregular shape.

3. The burner base as described in claim 1, characterized in that, The multiple protrusions are evenly arranged circumferentially.

4. The burner base as described in claim 1, characterized in that, The protrusion includes a plurality of protrusions that project outward toward the outer periphery, and the plurality of protrusions are spaced apart.

5. The burner base as described in claim 4, characterized in that, The protrusion includes two protrusions.

6. The burner base as described in claim 1, characterized in that, The protrusion extends across the entire vertical direction of the housing.

7. The burner base as described in claim 1, characterized in that, The burner base is used for the lower air intake burner.

8. The burner base as described in claim 1, characterized in that, The side of the outer ring ejector channel that connects to the outer ring gas chamber is open.

9. A burner, characterized in that, It includes a burner base as described in any one of claims 1-8.

10. A stove, characterized in that, It includes the burner as described in claim 9.

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