Burner and hob comprising same

Abstract

The utility model provides a kind of burner and including its stove, the burner includes ignition needle, outer ring fire cover and the load component for grounding, ignition needle is spaced apart to set in outer ring fire cover, the inside of outer ring fire cover towards ignition needle is provided with boss, boss extends along the direction close to ignition needle, one end of load component is connected in boss, the other end of load component extends towards ignition needle and the distance between it and ignition needle is not more than 2mm.The stove includes the burner as above. By setting load component, the static electricity of ignition needle is guided away to improve the concentration of ignition needle discharge, wherein gap is provided between load component and ignition needle, when load component is heated and expands, it will contact ignition needle and guide away ignition needle charge, and when load component cools, it will form gap with ignition needle again, to prevent ignition needle from mechanical damage. By the above non-direct contact setting load component, ignition needle can be effectively protected from mechanical damage, thereby improving the success rate of ignition.

Description

Technical Field

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

[0002] During the ignition process of a stove burner, the ignition needle tip may abnormally accumulate charge under certain operating conditions. The root cause lies in the fact that when the ceramic insulator and metal needle body of the ignition needle cool after high-temperature use, the difference in their thermoelectric properties and the combined effect of surface contaminants easily generate and retain static charge. This accumulated charge significantly alters the electric field distribution around the ignition needle tip, causing a sharp increase in the breakdown voltage required for ignition. When the pulse voltage generated by pressing the knob cannot reach the increased breakdown threshold, an electric spark cannot be generated. Even if the igniter, battery, and other related components are functioning normally, it will manifest as a "no spark" malfunction, directly leading to ignition failure.

[0003] To address the aforementioned charge accumulation problem, the industry commonly employs a focusing ring on the insulator of the ignition needle. This ring, grounded, conducts the charge off the insulator, disrupting the electric field balance at the ignition needle tip and making discharge easier. However, this focusing ring structure has significant drawbacks, particularly its potential damage to the ignition needle. To ensure reliable conductivity, the conductive metal ring or spring is often in rigid contact with the metal body of the ignition needle. During assembly or maintenance, improper handling can easily scratch or compress the ceramic insulator, compromising its insulation integrity. Damage to the insulator affects ignition success rate. Furthermore, the ignition and flame propagation structures of existing burners are independent, with the outer ring burner's orifice heavily reliant on the inner ring burner for ignition. Blockage of the inner ring burner's orifice leads to ignition and flame propagation problems, resulting in market repairs or complaints. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect of low ignition success rate in the prior art, and to provide a burner and a stove including the burner.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This utility model provides a burner, which includes an ignition needle, an outer ring flame cap, and a grounding load-conducting component. The ignition needle is spaced apart inside the outer ring flame cap. The outer ring flame cap has a protrusion on its inner side facing the ignition needle. The protrusion extends in a direction close to the ignition needle. One end of the load-conducting component is connected to the protrusion, and the other end of the load-conducting component extends toward the ignition needle with a distance of no more than 2 mm from the ignition needle.

[0007] In this design, the burner improves the concentration of the ignition needle's discharge by placing a load-conducting component near the ignition needle to conduct away the electrostatic charge. A gap is provided between the load-conducting component and the ignition needle. When the load-conducting component expands due to heat, it contacts the ignition needle to conduct away the charge. When the load-conducting component cools, the gap reforms, preventing mechanical damage to the ignition needle from vibration. This non-direct contact load-conducting component effectively protects the ignition needle from mechanical damage, thereby improving the ignition success rate.

[0008] Preferably, the load guiding component is movably connected to the boss so that the load guiding component can slide in the direction toward the ignition needle.

[0009] In this design, the aforementioned configuration allows the load-guiding component to slide relative to the boss, thereby adjusting its position and the gap between it and the ignition needle. Since the gap between the load-guiding component and the ignition needle is adjustable, the burner can accommodate ignition needles of different sizes simply by adjusting the gap, greatly expanding its versatility.

[0010] Preferably, the load-guiding component includes a metal sheet and a screw, the metal sheet having an elongated hole arranged in the direction toward the ignition needle, and the screw passing through the elongated hole and connected to the boss.

[0011] In this solution, the above settings are used to achieve the sliding of the load-guiding component relative to the boss.

[0012] Preferably, the boss has a spare ignition hole, one end of which extends to the inner wall of the outer ring burner cap and communicates with the outer ring gas chamber, and the other end of which faces the ignition needle.

[0013] In this solution, by setting the spare ignition hole on the outer ring burner cap towards the ignition needle, the ignition behavior of the outer ring burner cap and the ignition needle can be directly related, reducing the impact of blockages during the ignition process on the outer ring burner cap.

[0014] Preferably, the ignition needle includes a head ceramic body and a body ceramic body, the head ceramic body is disposed on the body ceramic body, and the spare ignition hole faces the head ceramic body.

[0015] In this solution, with the above settings, since the temperature of the top of the ignition needle, i.e. the head ceramic body, is the highest, the spare ignition hole facing the head ceramic body can carry away some of the heat of the head ceramic body through the ejected airflow, thereby preventing the head ceramic body from overheating and causing damage.

[0016] Preferably, the wall surface of the ceramic head facing the backup ignition hole is inclined, and the burner also includes an inner ring flame cap with an ignition hole. The airflow direction of the ignition hole points to the top of the inclined surface, and the backup ignition hole faces the bottom of the inclined surface, so that the airflow of the ignition hole and the backup ignition hole is guided by the inclined surface to form a collision and stagnation.

[0017] In this scheme, the above settings create a stable collision stagnation area when the ignition hole and the backup ignition hole flow in opposite directions. Since the collision stagnation area is located near the ceramic body at the head of the ignition needle, and the area near the head ceramic body is the area where the gas is ignited, the stagnation of the gas near the head ceramic body can greatly improve the success rate of gas ignition and reduce the possibility of flameout caused by excessive gas flow velocity.

[0018] Preferably, there are multiple spare ignition holes, and the multiple spare ignition holes are symmetrically arranged relative to the ignition hole.

[0019] In this scheme, the above settings further reduce the impact of blockages on the outer ring flame cap during the ignition process.

[0020] Preferably, the protrusion is provided with a flame transfer groove, which extends downward from the top wall of the protrusion, with one end of the flame transfer groove opening towards the ignition needle, and the other end of the flame transfer groove communicating with the interior of the outer ring flame cap.

[0021] In this solution, the above settings are used to specifically achieve the transmission of flame to the outer ring burner cap after the ignition needle is ignited.

[0022] Preferably, the burner further includes a mixing chamber, the outer ring flame cap is disposed on the mixing chamber and forms an outer ring combustion chamber, the mixing chamber has a through secondary air inlet, and the boss is located directly above the secondary air inlet.

[0023] In this solution, the above-mentioned setup allows the protrusion to form an obstacle above the secondary air inlet, reducing the flow rate of the secondary air and thus further preventing the gas ratio from falling below the concentration threshold due to excessively high airflow speed, thereby further improving the ignition success rate.

[0024] This utility model also provides a stove, which includes the burner as described above.

[0025] The positive and progressive effects of this utility model are as follows:

[0026] This invention provides a burner and a stove including the same. The burner improves the concentration of discharge by placing a load-conducting component near the ignition needle to conduct away electrostatic charge from the ignition needle. A gap is provided between the load-conducting component and the ignition needle. When the load-conducting component expands due to heat, it contacts the ignition needle to conduct away the charge. When the load-conducting component cools, the gap reforms between it and the ignition needle, preventing mechanical damage to the ignition needle due to vibration. This non-direct contact load-conducting component effectively protects the ignition needle from mechanical damage, thereby improving the ignition success rate. Attached Figure Description

[0027] Figure 1 This is one of the perspective views of the burner in an embodiment of this utility model.

[0028] Figure 2 This is one of the enlarged views of a burner according to an embodiment of the present invention.

[0029] Figure 3 This is a second enlarged view of a burner according to an embodiment of the present invention.

[0030] Figure 4 This is a partial enlarged view of the boss and load-guiding component in an embodiment of the present invention.

[0031] Figure 5 This is a second perspective view of the burner according to an embodiment of the present utility model.

[0032] Figure 6 This is a perspective view of the metal sheet in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] Burner 1000

[0035] Ignition needle 1

[0036] Head ceramic body 101

[0037] Ceramic body 102

[0038] Inner ring fire cap 2

[0039] Ignition port 201

[0040] Outer ring fire cap 3

[0041] 301 convex surface

[0042] Spare ignition port 302

[0043] Fire transfer slot 303

[0044] Load guiding component 4

[0045] Metal sheet 401

[0046] 402 screws

[0047] Long waist hole 403

[0048] Mixing chamber 5

[0049] Secondary air vent 6 Detailed Implementation

[0050] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0051] like Figures 1 to 6 As shown, this embodiment provides a burner 1000, which includes an ignition needle 1, an inner ring burner cap 2, an outer ring burner cap 3, and a grounding load-conducting component 4. The ignition needle 1 is spaced between the inner ring burner cap 2 and the outer ring burner cap 3. The circumferential sidewall of the inner ring burner cap 2 is provided with a plurality of ignition holes 201. The outer ring burner cap 3 is provided with a boss 301 on the inner side facing the ignition needle 1. The boss 301 extends in the direction close to the ignition needle 1. One end of the load-conducting component 4 is connected to the boss 301, and the other end of the load-conducting component 4 extends toward the ignition needle 1 and the distance between the load-conducting component 4 and the ignition needle 1 is not greater than 2mm.

[0052] Thus, the burner 1000 improves the concentration of discharge in the ignition needle 1 by placing a load-conducting component 4 close to the ignition needle 1 to conduct away the electrostatic charge. A gap is provided between the load-conducting component 4 and the ignition needle 1. When the load-conducting component 4 expands due to heat, it contacts the ignition needle 1 to conduct away the charge. When the load-conducting component 4 cools, the gap reforms between it and the ignition needle 1, preventing mechanical damage to the ignition needle 1 caused by vibration. The load-conducting component 4, which is configured in a non-direct contact manner, effectively protects the ignition needle 1 from mechanical damage, thereby improving the ignition success rate.

[0053] Specifically, such as Figure 1 As shown, the load-guiding component 4 is movably connected to the boss 301, allowing it to slide towards the ignition needle 1. This arrangement enables the load-guiding component 4 to slide relative to the boss 301, thereby adjusting its position and the gap between it and the ignition needle 1. Since the gap between the load-guiding component 4 and the ignition needle 1 is adjustable, the burner 1000 can accommodate ignition needles 1 of different sizes simply by adjusting the gap, greatly expanding its versatility.

[0054] In this embodiment, as Figure 2 As shown, the load-guiding component 4 includes a metal sheet 401 and a screw 402. The metal sheet 401 has an elongated hole 403 arranged in the direction toward the ignition needle 1. The screw 402 passes through the elongated hole 403 and connects to the boss 301. Specifically, this allows the load-guiding component 4 to slide relative to the boss 301. As shown... Figure 6 As shown, the metal sheet 401 has a narrower pointed portion near the ignition needle 1, and a wider body portion connecting the metal sheet 401 to the boss 301. An elongated hole 403 is located on the body portion. Since the elongated hole 403, in conjunction with the screw 402, allows the metal sheet 401 to rotate relative to the boss 301, it can accommodate ignition needles 1 at different heights, positions, and angles, thereby further improving the applicability of the burner 1000. In other embodiments, the shape of the metal sheet 401 and the connection method between the load-guiding component 4 and the boss 301 are not unique. Those skilled in the art can also use slide rails, snap-fit ​​connections, or other methods to achieve a movable connection; this embodiment does not limit this.

[0055] Furthermore, such as Figure 3 As shown, the distance between the load-carrying component 4 and the ignition needle 1 should not be less than 0.2 mm. If the gap is too small, interference may occur during thermal expansion, causing wear.

[0056] Specifically, such as Figure 3 and Figure 4 As shown, the boss 301 has a spare ignition hole 302. One end of the spare ignition hole 302 extends to the inner wall of the outer ring burner cap 3 and communicates with the outer ring gas chamber, while the other end faces the ignition needle 1. Thus, by aligning the spare ignition hole 302 on the outer ring burner cap 3 with the ignition needle 1, the ignition behavior of the outer ring burner cap 3 and the ignition needle 1 is directly related, reducing the impact of blockages during the ignition process on the outer ring burner cap 3. When there is no blockage during the ignition process, the gas in the spare ignition hole 302 can also provide supplementary gas for ignition.

[0057] Furthermore, there are multiple spare ignition holes 302, which are symmetrically arranged relative to the ignition needle 1. This further reduces the impact of blockages during the ignition process on the outer ring flame cap 3. In this embodiment, as... Figure 4 As shown, there are 4 spare ignition holes 302, with 2 spare ignition holes 302 distributed on each side of the ignition needle 1.

[0058] Specifically, such as Figure 2 As shown, the ignition needle 1 includes a head ceramic body 101 and a body ceramic body 102. The head ceramic body 101 is disposed on the body ceramic body 102, and the spare ignition hole 302 faces the head ceramic body 101.

[0059] Thus, through the above configuration, since the temperature of the top of the ignition needle 1, i.e., the head ceramic body 101, is the highest, the spare ignition hole 302, facing the head ceramic body 101, can carry away some of the heat from the head ceramic body 101 through the ejected airflow. This prevents the head ceramic body 101 from overheating and causing damage, and also reduces the breakdown voltage of the ignition needle 1, thus reducing the probability of sparkless ignition. Furthermore, the airflow from the spare ignition hole 302 impacts one side of the ignition needle 1 (the part near the outer ring burner cap 3), disrupting the uniform charge distribution on the head ceramic body 101 of the ignition needle 1, further reducing the probability of sparkless ignition. Simultaneously, the utilization of residual heat on the ignition needle 1 can also slightly improve the thermal efficiency of the burner 1000.

[0060] Furthermore, the wall surface of the ceramic head 101 facing the backup ignition port 302 is sloped, the airflow direction of the ignition port 201 points towards the top of the slope, and the backup ignition port 302 faces towards the bottom of the slope, so that the airflow of the ignition port 201 and the backup ignition port 302 is guided by the slope to form a collision and stagnation. Figure 3 As shown, the arrows indicate the airflow direction between ignition hole 201 and backup ignition hole 302. Thus, through the above arrangement, a stable collision stagnation area is formed when the airflow from ignition hole 201 and backup ignition hole 302 flows in opposite directions. Since this collision stagnation area is located near the ceramic body 101 at the head of the ignition needle 1, and the area near the ceramic body 101 is precisely where the gas is ignited, the stagnation of the gas near the ceramic body 101 can greatly improve the success rate of gas ignition and reduce the possibility of excessive gas flow velocity causing flameout.

[0061] Among them, the head ceramic body 101 is a frustum structure with a cross-sectional area that gradually increases from the top to the bottom, and its side surface naturally forms a slope.

[0062] Furthermore, the backup ignition port 302 is tilted upwards so that the gas flowing out of the backup ignition port 302 flows tangentially from the side of the head ceramic body 101, thereby improving the guiding effect of the slope. When the burner 1000 is used in an environment with excessively high gas pressure, the gas flow velocity at the ignition port 201 of the inner ring burner cap 2 will be too fast, causing flame lift-off and resulting in ignition failure. The gas exiting from the backup ignition port 302 forms an airflow stagnation zone due to the counterflow, thus ensuring normal ignition even in harsh environments with ultra-high pressure.

[0063] Specifically, such as Figure 3 and Figure 4 As shown, a flame transfer groove 303 is provided on the boss 301. The flame transfer groove 303 extends downward from the top wall of the boss 301, with one end of the flame transfer groove 303 opening towards the ignition needle 1 and the other end of the flame transfer groove 303 connecting to the interior of the outer ring flame cap 3. Thus, through the above arrangement, the flame is transferred to the outer ring flame cap 3 after the ignition needle 1 is ignited. There are multiple flame transfer grooves 303.

[0064] In this embodiment, as Figure 4 As shown, there are two ignition channels 303, which are respectively set between the two spare ignition holes 302 and symmetrically arranged with respect to the ignition needle 1. That is, one ignition channel 303 is set between the two spare ignition holes 302 on one side of the ignition needle 1, and one ignition channel 303 is set between the two spare ignition holes 302 on the other side of the ignition needle 1.

[0065] Furthermore, the two ignition channels 303 are arranged at an angle, and the extension lines of the two ignition channels 303 intersect in the ignition area above the ignition needle 1. This can further improve the ignition efficiency.

[0066] Specifically, such as Figure 5 As shown, the burner 1000 also includes a mixing chamber 5, an outer ring burner cap 3 is disposed on the mixing chamber 5 and forms an outer ring combustion chamber, the mixing chamber 5 has a through secondary air flow port 6, and the boss 301 is located directly above the secondary air flow port 6.

[0067] Thus, through the above-mentioned arrangement, the protrusion 301 can form an obstacle above the secondary air inlet 6, reducing the flow rate of the secondary air, thereby further preventing the airflow speed from being too fast and causing the gas ratio to fall below the concentration threshold, and further improving the ignition success rate.

[0068] In this embodiment, when the burner 1000 is working, the secondary air rises upward after passing through the secondary air inlet 6, collides with the bottom of the protrusion below the protrusion, and the flow velocity decreases, forming a small-scale low-speed laminar flow zone. When it continues to rise and crosses the backup ignition hole 302, the backup ignition hole 302 will not be deflamed due to excessive flow velocity, thus affecting ignition and flame transmission.

[0069] This embodiment also provides a stove, which includes the burner 1000 as described above.

[0070] This stove can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the burner 1000 to perform corresponding operations, thereby realizing intelligent control of ignition on and off and improving the user experience.

[0071] 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, characterized in that, The burner includes an ignition needle, an outer ring flame cap, and a grounding conductor. The ignition needle is spaced apart within the outer ring flame cap. The outer ring flame cap has a protrusion on its inner side facing the ignition needle. The protrusion extends in a direction close to the ignition needle. One end of the conductor is connected to the protrusion, and the other end of the conductor extends toward the ignition needle with a distance of no more than 2 mm from the ignition needle.

2. The burner as claimed in claim 1, characterized in that, The load guiding component is movably connected to the boss so that the load guiding component can slide in the direction toward the ignition needle.

3. The burner as described in claim 2, characterized in that, The load-carrying component includes a metal sheet and a screw. The metal sheet has an elongated hole arranged in the direction toward the ignition needle, and the screw passes through the elongated hole and is connected to the boss.

4. The burner as claimed in claim 1, characterized in that, The boss has a spare ignition hole. One end of the spare ignition hole extends to the inner wall of the outer ring flame cap and communicates with the outer ring gas chamber. The other end of the spare ignition hole faces the ignition needle.

5. The burner as described in claim 4, characterized in that, The ignition needle includes a head ceramic body and a body ceramic body, the head ceramic body is disposed on the body ceramic body, and the spare ignition hole faces the head ceramic body.

6. The burner as described in claim 5, characterized in that, The ceramic head has a sloping wall facing the backup ignition hole. The burner also includes an inner ring flame cap with an ignition hole. The airflow direction of the ignition hole points to the top of the sloping wall, and the backup ignition hole faces the bottom of the sloping wall, so that the airflow from the ignition hole and the backup ignition hole is guided by the sloping wall to collide and stop.

7. The burner as claimed in claim 4, characterized in that, The number of backup ignition holes is multiple, and the multiple backup ignition holes are symmetrically arranged relative to the ignition hole.

8. The burner as claimed in claim 1, characterized in that, A flame transfer groove is provided on the protrusion. The flame transfer groove extends downward from the top wall of the protrusion, and one end of the flame transfer groove opens towards the ignition needle. The other end of the flame transfer groove connects to the inside of the outer ring flame cap.

9. The burner as claimed in claim 1, characterized in that, The burner also includes a mixing chamber, the outer ring flame cap is disposed on the mixing chamber and forms an outer ring combustion chamber, the mixing chamber has a through secondary air flow port, and the boss is located directly above the secondary air flow port.

10. A stove, characterized in that, It includes the burner as described in any one of claims 1-9.

Images