Burner and hob

Abstract

The present application relates to the technical field of cooking utensils, in particular to a burner and a cooking utensil. The burner comprises a burner head and a distributor, the burner head extends along a vertical direction and a jet channel is formed in the burner head and extends through both axial ends of the burner head. The distributor is arranged at the top end of the burner head, the top surface of the distributor is concave, the central area of the top surface is closed, the central area covers the outlet of the jet channel, and a plurality of straight jet holes are formed around the central area on the top surface. The cooking utensil comprises a bottom shell and the above-mentioned burner, and the burner is mounted on the bottom shell. The above-mentioned burner improves the thermal efficiency of the cooking utensil. The top surface of the distributor is concave and has straight jet holes, which has a good energy concentration effect. During the use of the cooking utensil, the spilled soup water is collected in the closed central area under the guiding action of the concave structure, so that the top surface of the distributor has a liquid holding function, which prevents the soup water from falling into the jet channel and causing the jet channel to be blocked, thereby improving the reliability and safety of the cooking utensil during use.

Description

Technical Field

[0001] This invention relates to the field of stove technology, and more particularly to a burner and stove. Background Technology

[0002] Currently, most burners on cooktops are horizontally positioned. Horizontal burners have poor airflow injection and generally low thermal efficiency. The gas-air mixture needs to pass through a bend in the injection channel to reach the flame orifice, resulting in significant dynamic pressure loss and a risk of backfire during combustion. In addition, horizontally positioned burners require a relatively large installation space.

[0003] To reduce dynamic pressure loss, some existing stoves use a mesh cover at the top center of the inner ring burner cap. This mesh cover conceals the central burner's gas supply channel and the central burner hole. The mesh cover's surface is covered with small perforations, allowing the central burner hole to ensure combustion and thus reduce dynamic pressure loss during injection, improving thermal efficiency. However, the injection channel is located directly below the mesh cover. During cooking, liquids can easily spill into the injection channel, causing blockages, affecting the stove's normal operation, and reducing its safety. Summary of the Invention

[0004] The purpose of this invention is to provide a burner and stove to prevent the injection channel from being blocked by soup or water, thereby improving the reliability and safety of the burner during use.

[0005] To achieve this objective, the technical solution adopted by the present invention is as follows:

[0006] The burner includes:

[0007] The furnace head extends vertically and has an ejector channel that runs through both ends of its axial direction.

[0008] The flame distributor is located at the top of the burner head. The top surface of the flame distributor has a concave structure, and the central area of ​​the top surface is closed, covering the outlet of the ejector channel. Multiple direct-injection holes are formed around the central area on the top surface.

[0009] As a preferred embodiment, the fire distributor includes:

[0010] A flamethrower cap, the top surface of which has the central area and is provided with a plurality of direct flamethrower holes;

[0011] The burner ring is fitted with the flame cover and is located at the top of the burner head. The outlet of the ejector channel is connected to the direct flame hole through the inner hole of the burner ring.

[0012] As a preferred embodiment, the inner bottom surface of the seat ring is inclined downwards from the center outwards.

[0013] As a preferred embodiment, the top of the burner head has a top cover, the top cover has an open receiving cavity, the outlet of the ejector channel is connected to the receiving cavity, the seat ring is sealed on the top cover, and the inner hole of the seat ring is connected to the receiving cavity.

[0014] As a preferred embodiment, the inner bottom surface of the receiving cavity of the top cover is inclined downward from the center outward.

[0015] As a preferred embodiment, the outer bottom surface of the seat ring is provided with a ring platform, and the top end of the top cover is sealed and fitted onto the inner circumferential surface of the ring platform or the outer circumferential surface of the ring platform.

[0016] As a preferred embodiment, the bottom end of the furnace head has a base, the base has a mixing chamber with an open bottom, and the inlet of the ejector channel is connected to the mixing chamber;

[0017] The burner also includes a nozzle and a fixing plate. The fixing plate is installed at the open end of the bottom of the mixing chamber, and the fixing plate and the open end of the mixing chamber form an air inlet for air to enter. The nozzle is installed on the fixing plate to inject the gas into the mixing chamber.

[0018] As a preferred embodiment, the base can be installed on the bottom shell of the stove, and the plane where the air inlet is located is coplanar with the bottom surface of the bottom shell, so that the air inlet is located outside the bottom shell.

[0019] As a preferred embodiment, the burner further includes an ignition needle and a sensing needle, with two needle holes extending through the central area. The tails of the ignition needle and the sensing needle protrude from the top of the burner head, and the heads of the ignition needle and the sensing needle respectively pass through the two needle holes.

[0020] The stove includes a base and the aforementioned burner, the burner being mounted on the base.

[0021] The beneficial effects of this invention are as follows:

[0022] The burner proposed in this invention features a vertically extending burner head, ensuring the ejector channel extends in a straight line without bends. This vertical burner reduces the ejection resistance of the gas-air mixture, significantly lowering dynamic pressure loss and preventing backfire risk while improving thermal efficiency. The top surface of the burner is concave and features direct-injection nozzles, providing excellent energy concentration. During burner operation, spilled liquids are guided by the concave structure to a closed central area, giving the burner's top surface a liquid-holding function. This prevents liquids from falling into the ejector channel and causing blockage, thus improving the reliability and safety of the burner during use.

[0023] The stove proposed in this invention includes the aforementioned burner, which not only avoids the risk of backfire but also improves the stove's thermal efficiency. The top surface of the burner has a concave structure and direct-injection nozzles, providing good energy concentration. During stove use, spilled soup is guided by the concave structure and collected in the enclosed central area, giving the top surface of the burner a liquid-holding function. This prevents soup from falling into the injection channel and causing blockage, thus improving the reliability and safety of the stove during use. Attached Figure Description

[0024] Figure 1 This is a partial structural diagram of the burner installed on the bottom shell according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the burner provided in an embodiment of the present invention;

[0026] Figure 3 This is an exploded view of the burner structure provided in an embodiment of the present invention;

[0027] Figure 4 This is a longitudinal cross-sectional view of the burner when the pointed-bottom pot is placed on the stove, as provided in an embodiment of the present invention.

[0028] Figure 5 This is a partial bottom view of the burner installed on the bottom shell according to an embodiment of the present invention.

[0029] The component names and labels in the diagram are as follows:

[0030] 100. Bottom shell; 200. Pointed-bottom pot;

[0031] 1. Burner head; 10. Injector channel; 11. Top cover; 111. Receiving cavity; 112. Sleeve; 12. Base; 121. Mixing cavity; 122. Air inlet; 123. Ear plate;

[0032] 2. Flame distributor; 21. Flame cap; 211. Central zone; 212. Direct flame nozzle; 213. Pinhole; 22. Seat ring; 221. Inner hole; 222. Ring platform;

[0033] 3. Ignition needle; 4. Sensing needle; 5. Nozzle; 6. Fixing plate; 7. Damper plate; 8. Intake pipe. Detailed Implementation

[0034] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0038] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1 As shown, this embodiment proposes a stove, which includes a bottom shell 100 and a burner installed on the bottom shell 100. Gas and air are mixed and burned through the burner to cook food or heat water, etc.

[0040] Currently, most burners on cooktops are horizontally positioned. Horizontal burners have poor airflow injection and generally low thermal efficiency. The gas-air mixture must pass through a bend in the injection channel to reach the flame orifice, resulting in significant dynamic pressure loss and a risk of backfire during combustion. Furthermore, horizontally positioned burners require considerable installation space. To reduce dynamic pressure loss, some existing cooktops use a mesh cover at the top center of the inner ring burner cap. This mesh cover conceals the central flame injection channel and the central flame orifice. The mesh cover's surface is covered with small perforations, allowing the central flame to burn, thus reducing dynamic pressure loss during injection and improving thermal efficiency. However, the injection channel is directly below the mesh cover, making it easy for liquids to spill during cooking, causing blockages, affecting the cooktop's normal operation, and reducing its safety.

[0041] To solve the above problems, such as Figure 2 and Figure 3 As shown, this embodiment also proposes a burner, which includes a burner head 1 and a flame distributor 2. The burner head 1 extends vertically and has an injection channel 10 extending through both ends of its axial direction. The flame distributor 2 is located at the top of the burner head 1. The top surface of the flame distributor 2 has a concave structure, and the central area 211 of the top surface is closed and covers the outlet of the injection channel 10. Multiple direct injection holes 212 are formed around the central area 211 on the top surface. The burner head 1 extends vertically, so that the injection channel 10 extends in a straight line without turning, that is, the burner is a vertical burner, which reduces the injection resistance of the gas-air mixture, greatly reduces the dynamic pressure loss, not only avoids the risk of backfire, but also improves the thermal efficiency of the burner. The concave structure of the top surface of the flame distributor 2 and the presence of direct injection holes 212 provide better energy concentration. During the use of the burner, spilled soup is guided by the concave structure and collected in the closed central area 211, so that the top surface of the burner 2 has a liquid-holding function, preventing soup from falling into the ejector channel 10 and causing blockage of the ejector channel 10, thus improving the reliability and safety of the burner during use.

[0042] Specifically, the burner 2 includes a flame cover 21 and a seat ring 22. The top surface of the flame cover 21 has a central area 211 and multiple direct flame holes 212 extending through it. The flame cover 21 is fastened to the seat ring 22, which is located at the top of the burner head 1. The outlet of the ejector channel 10 communicates with the direct flame holes 212 through the inner hole 221 of the seat ring 22. The flame cover 21 and the seat ring 22 are fastened together to assemble the burner 2, meaning the burner 2 is a split structure, which facilitates manufacturing. The top surface of the flame cover 21 is a spherical concave surface, providing good energy concentration. The central area 211 is the lowest part of the spherical concave surface, allowing spilled liquids to collect within it under gravity, thus protecting the ejector channel 10 below the central area 211. It should be noted that the area of ​​the central region 211 can be flexibly adjusted according to the exit area of ​​the ejector channel 10, as long as it can completely cover the exit of the ejector channel 10, and no specific limitation is made here. Multiple direct-fire holes 212 are arrayed around the central region 211 on the top surface of the flame cap 21 to achieve uniform heating.

[0043] like Figure 3 and Figure 4 As shown, the top of the burner head 1 has a top cover 11, and the top cover 11 has an open-top receiving cavity 111. The outlet of the ejector channel 10 communicates with the receiving cavity 111. The seat ring 22 is sealed on the top cover 11, and the inner hole 221 of the seat ring 22 communicates with the receiving cavity 111. The mixture of gas and air in the ejector channel 10 passes sequentially through the outlet of the ejector channel 10, the receiving cavity 111, and the inner hole 221 of the seat ring 22 before entering the direct injection port 212 for combustion.

[0044] Specifically, a ring platform 222 protrudes from the outer bottom surface of the seat ring 22, and the top end of the top cover 11 is sealed and fitted onto the inner circumferential surface of the ring platform 222 or the outer circumferential surface of the ring platform 222. Through the sealing fit between the ring platform 222 and the top cover 11, a stable installation of the burner distributor 2 and the burner head 1 is achieved, improving the structural stability and sealing of the burner. Figure 4 As shown, the top end of the top cover 11 is sealed to the inner circumferential surface of the ring platform 222, and the outer bottom surface of the seat ring 22 is pressed against the upper end surface of the top cover 11, achieving a tight fit between the two and preventing leakage of the gas mixture.

[0045] Furthermore, such as Figure 3 and Figure 4 As shown, the inner bottom surface of the seat ring 22 is inclined downward from the center to the surrounding area, so that the inner bottom surface of the seat ring 22 forms a flow guiding slope structure. The soup splashed from the direct jet hole 212 flows quickly through the inner bottom surface of the seat ring 22 to the inner edge area of ​​the seat ring 22, so as to prevent the soup from entering the ejection channel 10, and further improve the protection of the ejection channel 10.

[0046] Furthermore, the inner bottom surface of the receiving cavity 111 of the top cover 11 is inclined downward from the center outward, so that the inner bottom surface of the top cover 11 also forms a flow-guiding slope structure. Soup spilled from the inner hole 221 of the seat ring 22 flows quickly through the inner bottom surface of the top cover 11 to the inner edge area of ​​the top cover 11, preventing soup from entering the ejection channel 10, thus further improving the protection of the ejection channel 10. In this embodiment, the central area 211 of the flame cover 21, the inner bottom surface of the seat ring 22, and the inner bottom surface of the receiving cavity 111 form a three-level flow-guiding structure, all of which can prevent spilled soup from falling into the ejection channel 10, achieving multiple protections for the ejection channel 10.

[0047] like Figure 3 and Figure 4 As shown, the burner includes an ignition needle 3 and an induction needle 4. Two needle holes 213 are formed through the central area 211. The tails of the ignition needle 3 and the induction needle 4 protrude from the top of the burner head 1, while the heads of the ignition needle 3 and the induction needle 4 pass through the two needle holes 213 respectively. The tails of the ignition needle 3 and the induction needle 4 protrude from the top of the burner head 1 to connect with external wires of the burner. Specifically, two sleeves 112 protrude from the inner bottom wall of the receiving cavity 111. The ignition needle 3 and the induction needle 4 pass through the two sleeves 112 respectively to achieve a secure installation of the ignition needle 3 and the induction needle 4.

[0048] In this embodiment, the heads of the ignition needle 3 and the sensing needle 4 are hidden within two needle holes 213, meaning that the heads of the ignition needle 3 and the sensing needle 4 do not protrude from the top surface of the flame-spraying cap 21, thus preventing the bottom of the pointed-bottom pot 200 from hitting the heads of the ignition needle 3 and the sensing needle 4. Simultaneously, this minimizes the height h of the pointed-bottom pot 200 (e.g., Figure 4 As shown in the figure, this makes the bottom of the pointed-bottom pan 200 closer to the flame, enhancing the heating effect of the flame in the direct injection port 212 and improving the thermal efficiency of the burner.

[0049] like Figure 2 , Figure 4 and Figure 5 As shown, the burner head 1 has a base 12 at its bottom end, and the base 12 has a mixing chamber 121 with an open bottom. The inlet of the ejector channel 10 is connected to the mixing chamber 121. The burner also includes a nozzle 5, a fixing plate 6, and an air inlet pipe 8. The fixing plate 6 is installed at the open end of the bottom of the mixing chamber 121, and the fixing plate 6 and the open end of the mixing chamber 121 form an air inlet 122 for air to enter. The nozzle 5 is installed on the fixing plate 6 to inject the fuel gas into the mixing chamber 121. External air enters the mixing chamber 121 through the air inlet 122. The air inlet pipe 8 is connected to the nozzle 5, and the fuel gas in the air inlet pipe 8 enters the mixing chamber 121 through the nozzle 5, so that the air and fuel gas are mixed evenly in the mixing chamber 121 and then delivered to the direct injection port 212 through the ejector channel 10.

[0050] like Figure 1As shown, three lugs 123 extend horizontally outward from the outer edge of the base 12. The lugs 123 are installed on the bottom shell 100 of the stove by bolts or other fasteners, so that the upright burner is installed vertically on the bottom shell 100, reducing the installation space of the burner and facilitating the miniaturization of the bottom shell 100. Specifically, the bottom shell 100 has mounting holes, and the lower end of the base 12 extends into the mounting holes to limit the position of the burner head 1, thereby improving the installation efficiency of the burner.

[0051] like Figure 3 and Figure 5 As shown, the fixed plate 6 has two fan-shaped plate structures, so that the fixed plate 6 and the opening end of the mixing chamber 121 form two fan-shaped air inlets 122. The burner also includes a damper plate 7, which is rotatably mounted on the opening end of the mixing chamber 121 and located outside the fixed plate 6. By rotating the damper plate 7, the size of the air inlets 122 can be adjusted to regulate the airflow entering the mixing chamber 121. The nozzle 5 passes through the damper plate 7 and the fixed plate 6 in sequence, and the air inlet pipe 8 is connected to the mixing chamber 121 through the nozzle 5.

[0052] like Figure 1 and Figure 5 As shown, when the base 12 is installed on the bottom shell 100 of the stove, the plane of the air inlet 122 is coplanar with the bottom surface of the bottom shell 100, so that the air inlet 122 is located outside the bottom shell 100. Compared with the existing horizontally placed burner where the air inlet is perpendicular to the bottom shell and located inside the bottom shell, the air inlet 122 of this embodiment can more easily obtain air to ensure sufficient airflow in the mixing chamber 121. The air inlet pipe 8 of this embodiment is Z-shaped, with one end of the air inlet pipe 8 located inside the bottom shell 100 and the other end of the air inlet pipe 8 extending outside the bottom shell 100 and communicating with the nozzle 5.

[0053] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A burner, characterized in that, include: The furnace head (1) extends vertically and has an ejector channel (10) that runs through both ends of its axial direction. The burner (2) is located at the top of the burner head (1). The top surface of the burner (2) is concave, and the central area (211) of the top surface is closed. The central area (211) covers the outlet of the ejector channel (10). Multiple direct-fire holes (212) are provided on the top surface surrounding the central area (211); The fire distributor (2) includes: Flamethrower cap (21), the top surface of which has the central area (211) and is provided with a plurality of direct flame holes (212). Seat ring (22), the flame cover (21) is fastened to the seat ring (22), the seat ring (22) is set at the top of the furnace head (1), and the outlet of the ejector channel (10) is connected to the direct flame hole (212) through the inner hole (221) of the seat ring (22); The top of the burner head (1) has a top cover (11), the top cover (11) has an open-top receiving cavity (111), the outlet of the ejector channel (10) is connected to the receiving cavity (111), the seat ring (22) is sealed on the top cover (11), and the inner hole (221) of the seat ring (22) is connected to the receiving cavity (111).

2. The burner according to claim 1, characterized in that, The inner bottom surface of the seat ring (22) is inclined downward from the center to the surrounding area.

3. The burner according to claim 1, characterized in that, The inner bottom surface of the receiving cavity (111) of the top cover (11) is inclined downward from the center to the surrounding area.

4. The burner according to claim 1, characterized in that, The outer bottom surface of the seat ring (22) is provided with a ring platform (222), and the top end of the top cover (11) is sealed and fitted onto the inner circumferential surface of the ring platform (222) or the outer circumferential surface of the ring platform (222).

5. The burner according to claim 1, characterized in that, The bottom end of the furnace head (1) has a base (12), the base (12) has a mixing chamber (121) with an open bottom, and the inlet of the ejector channel (10) is connected to the mixing chamber (121); The burner also includes a nozzle (5) and a fixing plate (6). The fixing plate (6) is installed at the open end of the bottom of the mixing chamber (121). The fixing plate (6) and the open end of the mixing chamber (121) form an air inlet (122) for air to enter. The nozzle (5) is installed on the fixing plate (6) to inject the gas into the mixing chamber (121).

6. The burner according to claim 5, characterized in that, The base (12) can be installed on the bottom shell (100) of the stove. The plane of the air inlet (122) is coplanar with the bottom surface of the bottom shell (100) so that the air inlet (122) is located outside the bottom shell (100).

7. The burner according to any one of claims 1 to 6, characterized in that, The burner also includes an ignition needle (3) and a sensing needle (4). Two needle holes (213) are opened through the central area. The tails of the ignition needle (3) and the sensing needle (4) protrude from the top of the burner head (1), and the heads of the ignition needle (3) and the sensing needle (4) respectively penetrate into the two needle holes (213).

8. A stove, characterized in that, It includes a base shell (100) and a burner according to any one of claims 1 to 7, the burner being mounted on the base shell (100).

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