Burner with upward air intake

Abstract

The utility model relates to a gas -cooker technical field, specifically disclose a kind of upper air inlet's combustor, including gas distribution base, the fire cover seat of setting in the top surface of gas distribution base, cover set on the fire cover seat, nozzle seat and the gas nozzle fixed in the one side of nozzle seat are fixed in the nozzle seat on gas distribution base, the fire cover seat has injection channel and the gas mixing groove being communicated with injection channel, the gas nozzle is towards the arrangement of injection channel;The fire cover seat has inner ring body and the outer ring body located in the outside of inner ring body, the gas mixing groove is formed between the inner ring body and outer ring body, the fire cover is annular, and the inside wall of fire cover is provided with the convex edge projecting to the center of fire cover along transverse direction, the convex edge extends to the inside of inner ring body;The ignition needle extending upwards is fixed on the gas distribution seat, and the ignition needle is located below the convex edge;The ignition needle is inserted into the inside of inner ring body, and the part of inner ring body close to ignition needle is provided with ignition hole.The utility model can improve the success rate of ignition.

Description

Technical Field

[0001] This utility model relates to the field of gas stove technology, and in particular to a burner with top air intake. Background Technology

[0002] Top-intake burners are a common type of burner in gas stoves. Air supply is completed above the control panel, drawing air in through the burner's own air intake duct. In existing top-intake burners, the ignition needle is located inside the burner cap. When there are abnormal airflow issues such as external wind, the ignition needle may fail to ignite successfully. Utility Model Content

[0003] This invention provides a top-intake burner, which can improve the ignition success rate.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model provides an upper-intake burner, including a gas distribution base, a burner cap seat disposed on the top surface of the gas distribution base, a burner cap covering the burner cap seat, a nozzle seat fixed on the gas distribution base, and a gas nozzle fixed on one side of the nozzle seat. The burner cap seat has an injection channel and a mixing groove communicating with the injection channel. The gas nozzle is arranged facing the injection channel. The burner cap seat has an inner ring body and an outer ring body located outside the inner ring body. A mixing groove is formed between the inner ring body and the outer ring body. The burner cap is annular, and the inner sidewall of the burner cap is provided with a protruding edge protruding laterally towards the center of the burner cap. The protruding edge extends to the inner side of the inner ring body. An upwardly extending ignition needle is fixed on the gas distribution base. The ignition needle is located below the protruding edge. The ignition needle extends into the inner side of the inner ring body, and an ignition hole is provided in the portion of the inner ring body near the ignition needle.

[0006] In some embodiments, an upwardly extending thermocouple is fixed on the gas distribution base, the thermocouple being located below the convex edge; the thermocouple extends into the inner side of the inner ring body, and an ignition hole is provided on the portion of the inner ring body near the thermocouple.

[0007] In some embodiments, the top surface of the inner ring body is provided with an annular groove, the annular groove being coaxially arranged with the inner ring body; the flame cap has a convex ring adapted to the annular groove, the convex ring being inserted into the annular groove.

[0008] In some embodiments, a positioning groove is provided on the bottom wall of the annular groove, and a positioning plate adapted to the positioning groove is provided at the bottom of the convex ring, the positioning plate being inserted into the positioning groove.

[0009] In some embodiments, the bottom wall of the mixing tank is provided with a groove, the groove is connected to the air intake channel, and a baffle is fixed to the top of the groove.

[0010] In some embodiments, the baffle plate is provided with a plurality of through holes.

[0011] In some embodiments, both the inner and outer walls of the flame cap are provided with flame holes.

[0012] In some embodiments, the bottom of the burner cap has a plurality of positioning posts, and the top surface of the gas distribution base is provided with positioning holes adapted to the positioning posts, and the positioning posts are inserted into the positioning holes adapted to them.

[0013] The present invention has at least the following beneficial effects: The inner wall of the burner cap of the present invention is provided with a protruding edge that protrudes laterally toward the center of the burner cap and extends to the inner side of the inner ring body; since the protruding edge is located above the ignition needle, external airflow disturbances are less likely to interfere with the space inside the burner cap, and the gas ejected from the ignition hole is more likely to come into contact with the spark generated by the ignition needle, thus improving the success rate of ignition. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a top-inlet burner according to an embodiment of the present invention;

[0015] Figure 2 for Figure 1 A cross-sectional schematic diagram of an upward-intake burner is shown.

[0016] Figure 3 for Figure 1 A cross-sectional view of the top-intake burner shown in another section;

[0017] Figure 4 This is an exploded view of an upper-inlet burner according to an embodiment of the present invention;

[0018] Figure 5 for Figure 4 An exploded view of the top-intake burner shown from another perspective;

[0019] Figure 6 This is a top view schematic diagram of a burner with an upper air intake according to an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the structure of a gas nozzle according to an embodiment of the present invention;

[0021] Figure 8 This is a cross-sectional schematic diagram of a gas nozzle according to an embodiment of the present invention.

[0022] The attached figures are labeled as follows:

[0023] Gas nozzle 100, jet hole 110, air inlet 111, constriction part 112, connecting part 113, first air outlet 114, second air outlet 115, transition part 116;

[0024] Gas distribution base 200, positioning hole 210;

[0025] The flame cap holder is 300, the inner ring is 301, the outer ring is 302, the ignition hole is 303, the ignition hole is 304, the ring groove is 305, the positioning groove is 306, the air intake channel is 310, the air mixing groove is 320, the groove is 330, and the positioning post is 340.

[0026] Flame cap 400, flame hole 401, raised edge 410, raised ring 420, positioning plate 430;

[0027] Nozzle seat 500;

[0028] Ignition needle 610, thermocouple 620;

[0029] Baffle 700, perforation 710. Detailed Implementation

[0030] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0031] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intermediary element (e.g., the third element) between the element and the other element.

[0033] An embodiment of this utility model provides a top-inlet burner, such as... Figure 1-6As shown, the device includes a gas distribution base 200, a burner cap seat 300 disposed on the top surface of the gas distribution base 200, a burner cap 400 covering the burner cap seat 300, a nozzle seat 500 fixed to the gas distribution base 200, and a gas nozzle 100 fixed to one side of the nozzle seat 500. The burner cap seat 300 has an injection channel 310 and a mixing groove 320 communicating with the injection channel 310. The gas nozzle 100 is arranged facing the injection channel 310. When the burner is working, the gas nozzle 100 injects gas into the injection channel 310. Under the action of the airflow, primary air enters the injection channel 310 with the gas and mixes in the mixing groove 320. The mixed gas then flows out from the flame hole 401 on the burner cap 400 and forms a flame after ignition.

[0034] The burner cap holder 300 has an inner ring 301 and an outer ring 302 located outside the inner ring 301. A mixing groove 320 is formed between the inner ring 301 and the outer ring 302. The burner cap 400 is annular, and the burner cap holder 300 is also approximately annular. The inner sidewall (near the inner sidewall) of the burner cap 400 is provided with a protruding edge 410 extending laterally toward the center of the burner cap 400. The protruding edge 410 extends to the inner side of the inner ring 301. An upwardly extending ignition needle 610 is fixed on the gas distribution base 200. The ignition needle 610 is located below the protruding edge 410. The ignition needle 610 extends into the inner side of the inner ring 301. An ignition hole 303 is provided on the portion of the inner ring 301 near the ignition needle 410.

[0035] When ignited, the ignition needle 410 ignites the gas ejected from the ignition hole 303, which in turn ignites the flame holes 401 on the entire burner cap 400. The raised edge 410 forms a brim-like structure, which blocks external airflow fluctuations. The airflow inside the burner cap 400 is relatively stable, and external airflow disturbances are less likely to affect the space inside the burner cap 400. The gas ejected from the ignition hole 303 is more likely to come into contact with the spark generated by the ignition needle 610, thus improving the ignition success rate.

[0036] In some embodiments, such as Figure 3-6 As shown, an upwardly extending thermocouple 620 is fixed on the gas distribution base 200, and the thermocouple 620 is located below the protruding edge 410. The thermocouple 620 extends into the inner side of the inner ring body 301, and the portion of the inner ring body 301 near the thermocouple 620 is provided with an ignition hole 304.

[0037] After the ignition needle 410 ignites the flame holes 401 on the entire flame cap 400, the ignition hole 304 will also form a flame. Due to the presence of the raised edge 410, the external airflow is less likely to interfere with the flame at the ignition hole 304, and the flame at the ignition hole 304 is relatively stable, making the thermocouple 620's detection of the flame temperature more stable and accurate.

[0038] In some embodiments, such as Figure 4 and Figure 5 As shown, the top surface of the inner ring body 301 is provided with an annular groove 305, which is coaxially arranged with the inner ring body 301 and surrounds the top surface of the inner ring body 301. The flame cover 400 has a protruding ring 420 that is adapted to the annular groove 305, and the protruding ring 420 is inserted into the annular groove 305.

[0039] On the one hand, the convex ring 420 and the annular groove 305 are used to position the burner cap 400, restricting its movement relative to the burner cap seat 300 and ensuring that the burner cap 400 is stably placed on the burner cap seat 300. On the other hand, this increases the contact area between the burner cap 400 and the burner cap seat 300, reducing gas leakage.

[0040] Furthermore, a positioning groove 306 is provided on the bottom wall of the annular groove 305, and a positioning plate 430 adapted to the positioning groove 306 is provided at the bottom of the convex ring 420. The positioning plate 430 is embedded in the positioning groove 306.

[0041] Because the annular groove 305 is ring-shaped, the convex ring 420 can rotate relative to it, which can easily cause the positions of the ignition hole 303 and the ignition hole 304 to change. To address this, this embodiment uses the cooperation of the positioning plate 430 and the positioning groove 306 to restrict the rotation of the flame cap 400 relative to the flame cap seat 300, ensuring accurate alignment between the flame cap 400 and the flame cap seat 300. This ensures that the ignition hole 303 and the ignition hole 304 are in the correct positions, guaranteeing successful ignition of the ignition needle 610 and accurate detection of the flame temperature by the thermocouple 620.

[0042] In some embodiments, such as Figure 2 , Figure 4 and Figure 5 As shown, the bottom wall of the mixing tank 320 is provided with a groove 330, which is connected to the intake channel 310. The mixed gas in the intake channel 310 first enters the groove 330 and then flows to the mixing tank 320 through the groove 330. A baffle plate 700 is fixed on the top of the groove 330.

[0043] The baffle 700 will block the gas flowing out of the groove 330, preventing the gas from flowing directly upward and causing excessive gas pressure at the burner hole 401 above the groove 330. After being blocked by the baffle 700, the gas flows to both sides of the baffle 700, which disperses the gas and makes the flame on the entire burner cap 400 relatively uniform, while also reducing the probability of backfire.

[0044] Furthermore, the baffle 700 is provided with multiple through holes 710, through which a portion of the mixed gas can flow directly to the flame hole 401 above the baffle 700, which can further improve the uniformity of the flame.

[0045] In this embodiment, the baffle 700 can be fixed to the flame cap base 300 by screws.

[0046] In some embodiments, such as Figure 4 and Figure 5 As shown, the inner and outer walls of the fire cover 400 are provided with fire holes 401, which can form an outer ring flame and an inner ring flame, providing two rings of fire for more even heating of the cookware.

[0047] In some embodiments, such as Figure 4 and Figure 5 As shown, the bottom of the burner cap holder 300 has multiple positioning posts 340, and the top surface of the gas distribution base 200 is provided with positioning holes 210 that are adapted to the positioning posts 340. The positioning posts 340 are inserted into the positioning holes 210. The movement of the burner cap holder 300 relative to the gas distribution base 200 is restricted by the cooperation between the positioning posts 340 and the positioning holes 210, so that the burner cap holder 300 can be stably placed on the gas distribution base 200.

[0048] In some embodiments, such as Figure 7 and Figure 8 As shown, the gas nozzle 100 has a through-hole 110, which includes an inlet 111, a constriction section 112, a connecting section 113, a first outlet 114, and a second outlet 115. The inlet 111, constriction section 112, connecting section 113, first outlet 114, and second outlet 115 are sequentially arranged and connected along the airflow injection direction, so the gas will flow sequentially through the inlet 111, constriction section 112, connecting section 113, first outlet 114, and second outlet 115. The gas enters the through-hole 110 from the inlet 111. In the airflow injection direction, the inner diameter of the constriction section 112 gradually decreases, and the constriction section 112 pressurizes the gas. The connecting portion 113, the first air outlet 114, and the second air outlet 115 are all provided with equal diameters. That is, in the direction of airflow injection, the inner diameter of the connecting portion 113 remains unchanged, the inner diameter of the first air outlet 114 remains unchanged, and the inner diameter of the second air outlet 115 also remains unchanged. The inner diameter of the second air outlet 115 is larger than the inner diameter of the first air outlet 114, and the inner diameter of the first air outlet 114 is larger than the inner diameter of the connecting portion 113. This forms a double-step structure, which is equivalent to enlarging the inner diameter of the air outlet end of the jet hole 110. This relatively reduces the concentration of the gas, which can reduce the gas flow rate, appropriately reduce the primary air drawn into the burner, and reduce the risk of backfire and flameout under extreme conditions.

[0049] In some embodiments, the jet orifice 110 further includes a transition portion 116, which is located between the first air outlet 114 and the second air outlet 115 and communicates with the first air outlet 114 and the second air outlet 115 respectively in the airflow jet direction, and the inner diameter of the transition portion 116 gradually increases in the airflow jet direction.

[0050] The transition section 116 guides the airflow, preventing a sudden increase in the inner diameter of the jet orifice 110 and facilitating the flow of combustion gases. Simultaneously, this structure also facilitates the manufacturing and molding of the first exhaust section 114 and the second exhaust section 115.

[0051] In some embodiments, the intake section 111 is provided with a constant diameter, that is, the inner diameter of the intake section 111 remains unchanged in the direction of airflow injection. This facilitates the smooth flow of the gas to the contraction section 112 before the gas is compressed, and also makes it easier to connect with the pipeline or channel for transporting the gas.

[0052] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A top-inlet burner, characterized in that: The device includes a gas distribution base, a burner cap seat on the top surface of the gas distribution base, a burner cap on the burner cap seat, a nozzle seat fixed on the gas distribution base, and a gas nozzle fixed to one side of the nozzle seat. The burner cap seat has an injection channel and a mixing groove communicating with the injection channel. The gas nozzle is arranged facing the injection channel. The burner cap seat has an inner ring and an outer ring located outside the inner ring, forming a mixing groove between the inner and outer rings. The burner cap is annular, and its inner sidewall has a protruding edge extending laterally toward the center of the burner cap, extending to the inner side of the inner ring. An upwardly extending ignition needle is fixed on the gas distribution base, located below the protruding edge. The ignition needle extends into the inner side of the inner ring, and an ignition hole is provided in the portion of the inner ring near the ignition needle.

2. The top-inlet burner according to claim 1, characterized in that: A thermocouple extending upwards is fixed on the gas distribution base, and the thermocouple is located below the convex edge; the thermocouple extends into the inner side of the inner ring body, and the part of the inner ring body near the thermocouple is provided with an ignition hole.

3. The top-inlet burner according to claim 1, characterized in that: The top surface of the inner ring is provided with an annular groove, which is coaxially arranged with the inner ring; the flame cover has a convex ring adapted to the annular groove, which is inserted into the annular groove.

4. The top-inlet burner according to claim 3, characterized in that: The bottom wall of the annular groove is provided with a positioning groove, and the bottom of the convex ring is provided with a positioning plate that matches the positioning groove, and the positioning plate is embedded in the positioning groove.

5. The top-inlet burner according to any one of claims 1-4, characterized in that: The bottom wall of the mixing tank is provided with a groove, which is connected to the air intake channel, and a baffle is fixed to the top of the groove.

6. The top-inlet burner according to claim 5, characterized in that: The baffle plate is provided with multiple through holes.

7. The top-inlet burner according to any one of claims 1-4, characterized in that: Both the inner and outer walls of the flame cap are provided with flame holes.

8. The top-inlet burner according to any one of claims 1-4, characterized in that: The bottom of the burner cap has multiple positioning posts, and the top surface of the gas distribution base is provided with positioning holes that are adapted to the positioning posts. The positioning posts are inserted into the positioning holes that are adapted to them.

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