Burner and cooking appliance including the same

Abstract

The present invention discloses a burner and a cooking appliance including the same, which comprises a base and a burner head. A gas distribution chamber is provided inside the base. An outer ring mixing chamber is provided at the upper end of the burner head. An inner ring mixing chamber is provided on the inner peripheral side of the outer ring mixing chamber. An air passage 111 penetrating the inner and outer side walls of the burner head is provided on the side wall of the burner head. An outer ring gas passage is provided inside the burner head. The outer ring gas passage extends from inside the outer ring mixing chamber to the lower end surface of the burner head and communicates with the gas distribution chamber. The gas distribution chamber of the burner is arranged on the base, so as to avoid the gas distribution structure blocking the secondary air supply passage of the inner ring flame, resulting in the phenomenon of long and short flames of the inner ring flame, and ensuring the stability of the inner ring flame.

Description

Technical Field

[0001] The present invention relates to the field of kitchen utensils, and particularly to a burner and a cooking stove including the same. Background Art

[0002] Most of the existing burners are designed for gas distribution on the burner head of the stove top. This not only makes it difficult to clean and maintain the burner, but also hinders the supplement of secondary air required for the inner-ring flame combustion of the burner, resulting in problems such as uneven flame length of the inner-ring flame of the burner. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the above defects in the prior art and provide a burner and a cooking stove including the same.

[0004] The present invention solves the above technical problem through the following technical solutions:

[0005] The present invention provides a burner, including a base and a burner head. A gas distribution chamber is provided in the base. An outer-ring mixing chamber is provided at the upper end of the burner head. An inner-ring mixing chamber is provided on the inner peripheral side of the outer-ring mixing chamber. An air passage 111 penetrating the inner and outer side walls of the burner head is provided on the side wall of the burner head. An outer-ring gas passage is provided in the burner head. The outer-ring gas passage extends from the outer-ring mixing chamber to the lower end surface of the burner head and communicates with the gas distribution chamber.

[0006] In this solution, with the above structure, the gas distribution chamber of the burner is arranged on the base, avoiding the phenomenon that the gas distribution structure blocks the secondary air supply passage of the inner-ring flame and causing uneven flame length of the inner-ring flame, and ensuring the stability of the inner-ring flame.

[0007] Preferably, there are a plurality of the air passages 111, and the outer-ring gas passage is arranged between two of the air passages 111.

[0008] In this solution, by providing a plurality of air passages 111, it is ensured that enough secondary air enters the inner-ring flame combustion area, ensuring full combustion of the inner-ring gas.

[0009] Preferably, the gas distribution chamber includes at least two gas distribution branches, and one of the gas distribution branches is used to communicate with the first ejector passage.

[0010] In this solution, by providing a plurality of gas distribution branches, the gas entering the outer-ring mixing chamber can be quickly and evenly distributed in the outer-ring mixing chamber, ensuring the stability of the outer-ring flame.

[0011] Preferably, each gas distribution branch corresponds to and communicates with one of the outer-ring gas passages.

[0012] In this solution, the above structure is adopted to further ensure that the gas entering the outer-ring mixing chamber can be quickly and evenly distributed in the outer-ring mixing chamber, thereby ensuring the stability of the outer-ring flame.

[0013] Preferably, the cross-sectional areas at the openings of each of the gas distribution branches are the same.

[0014] In this solution, the above structure is adopted to ensure that when the outer-ring gas channel supplies gas to the outer-ring mixing chamber, the gas flow rates at the gas outlets of the outer-ring gas channel are consistent, so as to ensure that the gas flow rates distributed to each of the outer-ring flame holes are nearly the same, making the flame heights of the outer-ring flames consistent.

[0015] Preferably, there are three of the gas distribution branches, and the three gas distribution branches are arranged in a herringbone structure.

[0016] In this solution, the gas distribution branches are arranged in a herringbone structure, which has a simple structure and is conducive to gas diversion.

[0017] Preferably, the connection between the gas distribution branch communicating with the first ejector channel and the other two gas distribution branches adopts an arc transition;

[0018] And / or, the openings of the two gas distribution branches not communicating with the first ejector channel gradually increase along the gas flow direction.

[0019] In this solution, the above structure is adopted to increase the gas outlet cross-sectional area of the gas distribution branch, reduce the outlet resistance, improve the combustion performance, reduce the flue gas, and enhance the energy efficiency.

[0020] Preferably, an inner-ring gas channel is further provided on the base, the lower end of the inner-ring gas channel communicates with the second ejector channel, and the upper end of the inner-ring gas channel communicates with the inner-ring mixing chamber.

[0021] In this solution, the above structure is adopted to provide a separate gas supply channel for the inner-ring flame, avoiding using the same gas supply channel as the outer-ring flame, which may affect the stability of the combustion flame.

[0022] Preferably, the inner-ring gas channel is provided at the junction of the three gas distribution branches.

[0023] In this solution, the above structure is adopted to divert the gas distribution branch where the gas flowing out of the ejector tube is located, so that it evenly enters the other two gas distribution branches, thereby enabling the gas entering the outer-ring gas channel to be evenly distributed in the outer-ring mixing chamber, ensuring that the flames of each flame hole of the outer-ring burner cap are consistent.

[0024] Preferably, a first mounting portion is provided on the base on the outer peripheral side of the gas distribution cavity, the first mounting portion is used for placing a liquid receiving tray, and a limiting protrusion or a threaded hole is provided on the first mounting portion for limiting or fixing the liquid receiving tray;

[0025] A receiving groove is provided at a position on the lower end face of the burner head corresponding to the position of the limiting protrusion or the threaded hole.

[0026] In this solution, by adopting the above structure, the limiting protrusion or the screw for restricting the liquid receiving tray can be hidden in the receiving groove on the lower end face of the burner head, avoiding being polluted by the overflowing liquid, affecting the aesthetics and being inconvenient for cleaning.

[0027] Preferably, a second mounting portion is provided on the inner side wall of the gas distribution chamber on the base, and a first mounting hole is provided on the second mounting portion;

[0028] A second mounting hole is provided in the outer ring gas passage, and the base and the burner head are fixedly connected by a fastener passing through the first mounting hole and the second mounting hole.

[0029] In this solution, by adopting the above structure, the burner head can be fixed to the base, preventing the burner head from detaching from the base during use and causing danger. The fixing position of the burner head and the base is set inside the gas distribution chamber, avoiding the overflowing liquid falling on the connection between the burner head and the base, affecting the aesthetics and being inconvenient for cleaning.

[0030] Preferably, the cross-sectional area of the outer ring gas passage gradually decreases along the gas flow direction.

[0031] In this solution, by adopting the above structure, the flow rate of the gas flowing into the outer ring mixing chamber can be increased, avoiding the situation of insufficient gas supply resulting in unstable flame.

[0032] Preferably, the burner further includes an inner ring fire cap and an outer ring fire cap. The inner ring fire cap covers the inner ring mixing chamber, and the outer ring fire cap covers the outer ring mixing chamber;

[0033] An ignition channel facing the inner ring fire cap is further provided on the outer ring fire cap. The lower side part of the ignition channel is communicated with the outer ring mixing chamber, and a cut groove communicating with the outside is provided on the upper side part of the ignition channel.

[0034] In this solution, by adopting the above structure, the flames of the inner ring fire cap and the outer ring fire cap are mutually involved, ensuring the stability of the inner ring fire and the outer ring fire.

[0035] Preferably, the burner further includes an ignition needle and a thermocouple, and the ignition needle and the thermocouple are arranged adjacent to each other.

[0036] Preferably, a shielding eaves extending towards the outer ring fire cap is provided on the inner ring fire cap, and the ignition needle and the thermocouple are arranged below the shielding eaves.

[0037] In this solution, a corresponding liquid overflow shielding eaves is designed above the ignition needle and the thermocouple on the inner ring burner cap to provide key protection for the ignition needle and the thermocouple, thereby improving the ignition and flame retention performance of the burner.

[0038] Preferably, along the circumferential direction of the outer ring mixing chamber, the side walls on both sides of the air outlet of the outer ring gas passage incline away from each other.

[0039] In this solution, with the above structure, the flow is guided obliquely, reducing the resistance and accelerating the rate of the gas when it is shunted circumferentially; moreover, the inner side wall increases the intake cross-sectional area (V-shaped cross-section) of the intake port at the lower end of the outer ring mixing chamber, increasing the effective cross-sectional area for the gas to flow from the base to the outer ring mixing chamber, reducing the gas resistance, weakening the impact and jitter of the gas inside the burner, and reducing the combustion noise.

[0040] The present invention also provides a cooker, which includes the burner as described above.

[0041] Based on common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0042] The positive and progressive effects of the present invention are as follows: The present invention arranges the gas distribution cavity of the burner on the base, avoiding the phenomenon that the gas distribution structure blocks the secondary air supply channel of the inner ring flame, resulting in uneven flame length of the inner ring flame, and ensuring the stability of the inner ring flame. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic structural diagram of the burner in a preferred embodiment of the present invention.

[0044] Figure 2 For Figure 1 the exploded schematic structural diagram of the burner in.

[0045] Figure 3 For Figure 2 the schematic structural diagram of the burner after removing the liquid holding tray in.

[0046] Figure 4 For Figure 1 the schematic structural diagram of the base of the burner in.

[0047] Figure 5 For Figure 1 the schematic structural diagram of the burner head in.

[0048] Figure 6 For Figure 5 the schematic structural diagram of the bottom of the burner head in.

[0049] Description of the reference numerals:

[0050] Burner head 100

[0051] Burner head body 110

[0052] Air passage 111

[0053] Outer ring mixing chamber 112

[0054] Outer ring gas passage 113

[0055] Second mounting hole 114

[0056] Receiving groove 115

[0057] Inner ring mixing chamber 116

[0058] Outer ring burner cap 120

[0059] Pilot channel 121

[0060] Inner ring burner cap 130

[0061] Base 200

[0062] Gas distribution chamber 210

[0063] First gas distribution branch 211

[0064] Second gas distribution branch 212

[0065] Third gas distribution branch 213

[0066] Inner ring gas passage 220

[0067] Second mounting part 230

[0068] First mounting hole 231

[0069] First mounting part 201

[0070] Liquid receiving tray 300

[0071] Limit hole 301

[0072] First ejector tube 400

[0073] Second ejector tube 500

[0074] Thermocouple 600

[0075] Ignition pin 700 Specific embodiments

[0076] The present invention will be more clearly and completely described below by way of examples in conjunction with the accompanying drawings, but the present invention is not limited thereto within the scope of these examples.

[0077] As Figures 1-6As shown in the figure, a burner disclosed in this embodiment includes a base 200 and a burner head 100. The burner head 100 includes a burner head body 110, an outer ring burner cap 120, and an inner ring burner cap 130. A gas distribution chamber 210 is provided inside the base 200. An outer ring gas mixing chamber 112 is provided at the upper end of the burner head body 110. An inner ring gas mixing chamber 116 is provided on the inner circumferential side of the outer ring gas mixing chamber 112. An air passage 111 penetrating the inner and outer side walls of the burner head 100 is provided on the side wall of the burner head body 110. An outer ring gas passage 113 is provided inside the burner head body 110. The outer ring gas passage 113 extends from the inside of the outer ring gas mixing chamber 112 to the lower end surface of the burner head body 110 and communicates with the gas distribution chamber 210.

[0078] In this embodiment, with the above structure, the gas distribution chamber 210 of the burner is arranged on the base 200, avoiding the phenomenon that the gas distribution structure blocks the secondary air supply passage of the inner ring flame, resulting in the inner ring flame being long or short, and ensuring the stability of the inner ring flame.

[0079] There are multiple air passages 111, and the outer ring gas passage 113 is arranged between two air passages 111. In this embodiment, there are three air passages 111, which are evenly distributed along the circumferential direction of the burner head body 110. By providing multiple air passages 111, it is ensured that enough secondary air enters the combustion area of the inner ring flame, ensuring the full combustion of the inner ring gas. In other embodiments, the number of air passages 111 can also be one or other numbers, which will not be elaborated here.

[0080] The gas distribution chamber 210 includes at least two gas distribution branches, and one of the gas distribution branches is used to communicate with the first ejector passage. By providing multiple gas distribution branches, the gas entering the outer ring gas mixing chamber 112 can be quickly and evenly distributed in the outer ring gas mixing chamber 112, ensuring the stability of the outer ring flame.

[0081] As Figure 4 shown, in this embodiment, the gas distribution chamber 210 has three gas distribution branches, namely the first gas distribution branch 211, the second gas distribution branch 212, and the third gas distribution branch 213. Among them, the first gas distribution branch 211 communicates with the first ejector passage. In other embodiments, the number of gas distribution branches can also be two or other numbers, which will not be elaborated here.

[0082] Each gas distribution branch corresponds to and communicates with an outer ring gas passage 113. In this embodiment, there are three outer ring gas passages 113 corresponding to and distributed corresponding to the first gas distribution branch 211, the second gas distribution branch 212, and the third gas distribution branch 213. With the above structure, it is further ensured that the gas entering the outer ring gas mixing chamber 112 can be quickly and evenly distributed in the outer ring gas mixing chamber 112, and thus the stability of the outer ring flame is ensured.

[0083] In this embodiment, the cross-sectional areas at the openings of each gas distribution branch are the same. With the above structure, when the outer ring gas channel 113 supplies gas to the outer ring mixing chamber 112, the gas flow velocities at the outlets of the outer ring gas channel 113 are consistent, thereby ensuring that the gas flow velocities distributed to each flame hole in the outer ring are nearly the same, and keeping the flame heights of the outer ring flames consistent. Of course, in some embodiments, the cross-sectional areas at the openings of the gas distribution branches may also be different.

[0084] In this embodiment, the three gas distribution branches are arranged in a herringbone structure. The herringbone structure arrangement of the gas distribution branches is simple in structure and conducive to gas diversion.

[0085] The connection between the gas distribution branch connected to the first injection channel and the other two gas distribution branches adopts an arc surface transition; and / or, the openings of the two gas distribution branches not connected to the first injection channel gradually increase along the gas flow direction. With the above structure, the gas outlet cross-sectional area of the gas distribution branch is increased, the outlet resistance is reduced, the combustion performance is improved, the flue gas is reduced, and the energy efficiency is enhanced.

[0086] In this embodiment, the connection between the first gas distribution branch 211 and the other two gas distribution branches adopts an arc surface transition, and the openings of the second gas distribution branch 212 and the third gas distribution branch 213 gradually increase along the gas flow direction.

[0087] In this embodiment, an inner ring gas channel 220 is further provided on the base 200. The lower end of the inner ring gas channel 220 is connected to the second injection channel, and the upper end of the inner ring gas channel 220 is connected to the inner ring mixing chamber 116. With the above structure, a separate gas supply channel is provided for the inner ring flame, avoiding using the same gas supply channel as the outer ring flame and affecting the stability of the combustion flame.

[0088] As Figure 3 shown, the inner ring gas channel 220 is provided at the junction of the three gas distribution branches. With the above structure, the gas distribution branch where the gas flowing out of the injection pipe is located can be diverted, so that it evenly enters the other two gas distribution branches, thereby enabling the gas entering the outer ring gas channel 113 to be evenly distributed in the outer ring mixing chamber 112 and ensuring that the flames of each flame hole of the outer ring burner cap 120 are consistent.

[0089] Moreover, the three gas distribution branches of the base 200 and the inner ring gas channel 220 are similar to a three-petal flow diversion, and the volume of the base 200 is small, so that the contact heat transfer between the base 200 and the outer ring mixing chamber 112 is reduced, which is beneficial to the improvement of energy efficiency. At the same time, it is conducive to the heat dissipation of the lower part of the base 200, and improves the problems of yellow flame and extinguishing and slow whistling caused by the heating of the gas in the base 200 before diversion.

[0090] A first mounting portion 201 is provided on the outer peripheral side of the gas distribution cavity 210 on the base 200. The first mounting portion 201 is used to place the liquid receiving tray 300. The first mounting portion 201 is provided with a limiting protrusion or a threaded hole for limiting or fixing the liquid receiving tray 300. A receiving groove 115 is provided on the lower end surface of the burner head 100 corresponding to the position of the limiting protrusion or the threaded hole. With the above structure, the limiting protrusion or the screw for restricting the liquid receiving tray 300 can be hidden in the receiving groove 115 on the lower end surface of the burner head 100, avoiding being contaminated by the overflow liquid, affecting the appearance and being inconvenient to clean.

[0091] As Figure 2 , Figure 4 and Figure 6 shown, a first mounting portion 201 is provided on the outer peripheral side of the gas distribution cavity 210 on the base 200. A plurality of threaded holes (not shown in the figure) are provided on the first mounting portion 201. A limiting hole 301 is provided on the liquid receiving tray 300 corresponding to the position of the threaded hole. The liquid receiving tray 300 is fixed on the base 200 by screws, and the screws are hidden through the receiving groove 115 on the lower end surface of the burner head body 110.

[0092] As Figure 4 and Figure 6 shown, a second mounting portion 230 is provided on the inner side wall of the gas distribution cavity 210 on the base 200. A first mounting hole 231 is provided on the second mounting portion 230. A second mounting hole 114 is provided in the outer ring gas passage 113. The base 200 and the burner head body 110 are fixedly connected by a fastener passing through the first mounting hole 231 and the second mounting hole 114.

[0093] With the above structure, the burner head body 110 and the base 200 can be fixed, avoiding the burner head body 110 detaching from the base 200 during use, resulting in danger. The fixing position of the burner head body 110 and the base 200 is set inside the gas distribution cavity 210, avoiding the overflow liquid falling on the connection between the burner head body 110 and the base 200, affecting the appearance and being inconvenient to clean.

[0094] In this embodiment, the cross-sectional area of the outer ring gas passage 113 gradually decreases along the gas flow direction. With this structure, the flow rate of the gas flowing into the outer ring mixing chamber 112 can be increased, avoiding the situation of insufficient gas supply resulting in unstable flames.

[0095] In this embodiment, the inner ring burner cap 130 covers the inner ring mixing chamber 116, and the outer ring burner cap 120 covers the outer ring mixing chamber 112; a pilot flame passage 121 facing the inner ring burner cap 130 is further provided on the outer ring burner cap 120. The lower side portion of the pilot flame passage 121 is communicated with the outer ring mixing chamber 112, and a cut groove communicating with the outside is provided on the upper side portion of the pilot flame passage 121. With the above structure, the flames of the inner ring burner cap 130 and the outer ring burner cap 120 are mutually involved, ensuring the stability of the inner ring flame and the outer ring flame.

[0096] As Figure 3 and Figure 4 shown, the burner further includes an ignition pin 700 and a thermocouple 600, which are arranged adjacent to each other. The ignition pin 700 and the thermocouple 600 are centrally installed at the same place, facing the secondary air supply inlet, so that the secondary air supply for the ignition holes and the flame retention holes on the burner head is more sufficient, and the combustion is more stable, thereby improving the ignition and flame retention performance.

[0097] The inner ring burner cap 130 is provided with a shielding eaves (not shown in the figure) extending towards the outer ring burner cap 120. The ignition pin 700 and the thermocouple 600 are arranged below the shielding eaves. The inner ring burner cap 130 is designed with corresponding anti-liquid overflow shielding eaves above the ignition pin 700 and the thermocouple 600 to provide key protection for the ignition pin 700 and the thermocouple 600, and improve the ignition and flame retention performance of the burner.

[0098] In this embodiment, along the circumferential direction of the outer ring mixing chamber 112, the side walls on both sides of the air outlet of the outer ring gas channel 113 are inclined away from each other. With the above structure, the inclined guide flow reduces the resistance and speeds up the rate of the gas when it is circumferentially divided; and the inner side wall increases the intake cross-sectional area (V-shaped cross-section) of the intake port at the lower end of the outer ring mixing chamber 112, so that the effective cross-sectional area of the gas flowing from the base 200 to the outer ring mixing chamber 112 increases, the gas resistance decreases, the impact and jitter of the gas inside the burner are weakened, and the combustion noise is reduced.

[0099] This embodiment also discloses a cooking appliance, which includes the above-mentioned burner.

[0100] Although the specific implementation manners of the present invention have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A burner, characterized in that, It includes a base and a burner head. A gas distribution chamber is provided inside the base. An outer ring mixing chamber is provided at the upper end of the burner head. An inner ring mixing chamber is provided on the inner circumferential side of the outer ring mixing chamber. An air passage penetrating the inner and outer side walls of the burner head is provided on the side wall of the burner head. An outer ring gas passage is provided inside the burner head. The outer ring gas passage extends from inside the outer ring mixing chamber to the lower end face of the burner head and communicates with the gas distribution chamber.

2. The burner according to claim 1, characterized in that, There are multiple air passages, and the outer ring gas passage is provided between two of the air passages.

3. The burner according to claim 1, characterized in that, The gas distribution chamber includes at least two gas distribution branches, and one of the gas distribution branches is used to communicate with the first ejector passage.

4. The burner according to claim 3, characterized in that, Each gas distribution branch correspondingly communicates with one of the outer ring gas passages.

5. The burner according to claim 4, characterized in that, The cross-sectional areas at the openings of each gas distribution branch are the same.

6. The burner according to claim 3, characterized in that, There are three gas distribution branches, and the three gas distribution branches are arranged in a herringbone structure.

7. The burner according to claim 6, characterized in that, The connection between the gas distribution branch communicating with the first ejector passage and the other two gas distribution branches adopts an arc transition; And / or, the openings of the two gas distribution branches not communicating with the first ejector passage gradually increase along the gas flow direction.

8. The burner according to claim 6, characterized in that, An inner ring gas passage is further provided on the base. The lower end of the inner ring gas passage communicates with the second ejector passage, and the upper end of the inner ring gas passage communicates with the inner ring mixing chamber.

9. The burner according to claim 8, characterized in that, The inner ring gas passage is provided at the junction of the three gas distribution branches.

10. The burner according to claim 1, characterized in that, A first mounting portion is provided on the base on the outer peripheral side of the gas distribution chamber. The first mounting portion is used to place a liquid receiving tray, and a limiting protrusion or a threaded hole is provided on the first mounting portion for limiting or fixing the liquid receiving tray; A receiving groove is provided at the position on the lower end face of the burner head corresponding to the limiting protrusion or the threaded hole.

11. The burner according to claim 1, characterized in that, A second mounting portion is provided on the inner side wall of the gas distribution chamber on the base, and a first mounting hole is provided on the second mounting portion; A second mounting hole is provided inside the outer ring gas passage. The base and the burner head are fixedly connected by a fastener passing through the first mounting hole and the second mounting hole.

12. The burner according to claim 1, characterized in that, The cross-sectional area of the outer ring gas passage gradually decreases along the gas flow direction.

13. The burner according to claim 1, characterized in that, The burner further includes an inner ring burner cap and an outer ring burner cap. The inner ring burner cap covers the inner ring mixing chamber, and the outer ring burner cap covers the outer ring mixing chamber; An ignition passage facing the inner ring burner cap is further provided on the outer ring burner cap. The lower side portion of the ignition passage communicates with the outer ring mixing chamber, and a cutting groove communicating with the outside is provided on the upper side portion of the ignition passage.

14. The burner according to claim 13, characterized in that, The burner further includes an ignition needle and a thermocouple, and the ignition needle and the thermocouple are arranged adjacent to each other.

15. The burner according to claim 14, characterized in that, A shielding eaves extending in the direction of the outer ring burner cap is provided on the inner ring burner cap, and the ignition needle and the thermocouple are arranged below the shielding eaves.

16. The burner according to claim 1, characterized in that, Along the circumferential direction of the outer ring mixing chamber, the side walls on both sides of the air outlet of the outer ring gas passage incline away from each other.

17. A cooking appliance, characterized in that, The cooking appliance includes the burner according to any one of claims 1-16.

Images