Ignition structure, gas hob and integrated kitchen system

Abstract

This invention discloses an ignition structure, a gas stove, and an integrated kitchen system. The ignition structure includes a first gas injector and a valve stem, the valve stem being rotatable between an initial position and a working zone position. The first gas injector has an air inlet on its side. The ignition structure also includes a baffle that moves with the valve stem. The baffle includes a blocking portion extending to the side of the air inlet. When the baffle moves with the valve stem between the initial position and the ignition position, it can at least partially block the air inlet; when it rotates with the valve stem from the initial position towards the working zone position, it can move away from the air inlet. Therefore, when the valve stem performs the ignition operation, the baffle can block the air inlet, reducing the airflow and preventing flame lift-off due to excessive airflow, thus reducing the probability of flame extinguishing and improving the ignition success rate. When the valve stem rotates to the working zone position, the baffle can rotate to a position away from the air inlet, thereby preventing the baffle from blocking the air inlet and affecting combustion efficiency.

Description

Technical Field

[0001] This invention relates to the field of gas stoves, and more particularly to an ignition structure, a gas stove, and an integrated kitchen system. Background Technology

[0002] Existing ignition structures such as Figure 9 As shown, after ignition, the gas flows to the burner through the gas pipe 1. When it flows through the air injection inlet 2, the negative pressure caused by Bernoulli's fluid theorem allows outside air to be drawn into the gas pipe 1 through the air injection inlet 2 and mixed with the gas to form a combustible mixture.

[0003] However, during ignition, excessive air intake can easily cause flame detachment (the flame leaves the gas stove's outlet), leading to ignition failure. But in order to ensure complete combustion of gas during normal operation, the above structure must be used to ensure sufficient airflow.

[0004] Based on this, such as Figure 10 As shown in the prior art, Chinese patent CN111425627A discloses a gas rotary valve and a gas stove. In the prior art, the valve needle has a protruding ridge 3, and the air intake chamber has a flange 4 that mates with the ridge 3. The air intake chamber includes a first air intake channel 5 located above the flange and a second air intake channel 6 located below the flange. During ignition, the valve needle moves downward, and the ridge 3 on the valve needle engages with the flange 4 of the air intake chamber, thereby sealing the lower half of the second air intake channel 6. At this time, the gas intake is reduced, making it less likely for flame lift-off, resulting in a high ignition success rate. After ignition, the valve needle returns to its original position and moves upward, at which point the second air intake channel 6 is reopened, ensuring a sufficient gas supply.

[0005] However, the above solution has the following problem: after the valve needle is reset and moved upward, the flange 3 and the ridge 4 will still obstruct the airflow into the second intake channel 6, affecting the combustion efficiency during normal operation. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defect of low combustion efficiency after ignition in the prior art, and to provide an ignition structure, a gas stove and an integrated kitchen system.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] An ignition structure includes a first gas ejector tube and a valve stem. The valve stem is capable of moving downward from an initial position to an ignition position when pressurized, allowing gas to flow into the first gas ejector tube; and rebounding upward to the initial position when the pressure is released. The valve stem is also capable of rotating between the initial position and a working interval position. The first gas ejector tube has an air inlet on its side. The ignition structure further includes a baffle that moves with the valve stem. The baffle includes a blocking portion extending to the side of the air inlet. When the baffle moves with the valve stem between the initial position and the ignition position, it can at least partially block the air inlet; and when it rotates with the valve stem from the initial position towards the working interval position, it can move away from the air inlet.

[0009] Therefore, when the valve stem performs the ignition operation, the baffle can block the air inlet, reduce the air flow, avoid flame lift-off due to excessive air flow, reduce the probability of flame extinguishing, and improve the ignition success rate; when ignition ends and the valve stem rotates to the working range position, the baffle can rotate with the valve stem to a position away from the air inlet, thereby avoiding the baffle blocking the air inlet from affecting the combustion efficiency.

[0010] Preferably, when the baffle moves up and down between the ignition position and the initial position with the valve stem, the projection of the blocking part toward the air inlet completely covers the air inlet.

[0011] Preferably, when the baffle moves up and down between the ignition position and the initial position with the valve stem, the distance between the blocking part and the air inlet is 0-3mm.

[0012] Preferably, the ignition structure further includes a valve body, the valve stem is connected to the valve body and can move up and down relative to the valve body, a limiting member is provided on the part of the valve stem extending out of the valve body, the upper surface of the baffle abuts against the limiting member, and the lower surface of the baffle elastically abuts against the surface of the valve body through an elastic member.

[0013] With the above structure, when the valve stem is pressed down, it can overcome the elastic force of the elastic element and move the baffle downwards together. When the force on the valve stem is released, the baffle and valve stem can move upwards under the elastic restoring force applied by the elastic element. This achieves the reset of the baffle and valve stem. Thus, the baffle can move up and down with the valve stem.

[0014] Preferably, the valve body is provided with a limiting platform, the limiting platform having a limiting plate located above the surface of the valve body, the valve stem passing through the limiting plate, and the limiting member on the valve stem being placed in the limiting space between the limiting plate and the surface of the valve body, and the range of motion of the limiting member being limited by the limiting space.

[0015] The above structure limits the movement of the valve stem, ensuring a consistent feel for each valve stem and improving product quality.

[0016] Preferably, the ignition structure further includes a valve body, the valve stem is disposed in the valve body, a limiting member is provided on the part of the valve stem extending out of the valve body, and the baffle abuts against the limiting member and can achieve static friction engagement with the limiting member.

[0017] The limiting component and the baffle are in static friction fit, so when the valve stem rotates, the baffle can be driven to rotate with the valve stem.

[0018] Preferably, a first blocking part and a second blocking part are provided on both sides of the baffle, and the two ends of the path of the baffle rotating with the valve stem can be blocked by the first blocking part and the second blocking part to change the self-static friction fit between the baffle and the limiting member into a sliding friction fit. The position of the baffle when blocked by the first blocking part corresponds to the position of the baffle blocking the air inlet, and the position of the baffle when blocked by the second blocking part corresponds to the position of the baffle away from the air inlet.

[0019] The first and second blocking parts can limit the range of motion of the baffle while enabling it to perform its original function, thereby reducing the space requirements for the baffle's movement, facilitating the placement of the ignition structure, and reducing installation difficulty. Furthermore, when the baffle is blocked by either the first or second blocking part, the valve stem and baffle can switch from a static friction fit to a sliding friction fit, meaning the valve stem can rotate relative to the baffle. Therefore, the restriction on the baffle does not affect the range of rotation of the valve stem.

[0020] Preferably, the baffle has a pressure plate portion at the end opposite to the air inlet, and the upper surface of the valve body has an ignition contact. The pressure plate portion can contact and trigger the ignition contact when the baffle is pressed down. When the baffle rotates, the projection of the relative running path of the ignition contact toward the pressure plate portion can fall on the pressure plate portion.

[0021] Since ignition operation usually involves two steps: pressing down the knob and rotating the knob, this design ensures that the pressure plate of the baffle remains in contact with the ignition contact during the rotation of the knob, thus preventing ignition interruption.

[0022] Preferably, the ignition structure further includes a valve body, with the valve stem disposed within the valve body. A baffle is anti-rotationally connected to the portion of the valve stem extending outside the valve body. The baffle has a dovetail-shaped pressure plate at the end opposite to the air inlet. The upper surface of the valve body has an ignition contact. The pressure plate can contact and trigger the ignition contact when the baffle is pressed down. When the baffle rotates, the projection of the relative running path of the ignition contact toward the pressure plate can fall onto the pressure plate. By providing a pressure plate with a specific shape, the pressure plate can always maintain contact with the ignition contact.

[0023] Preferably, the first gas ejector tube includes an air inlet section and an air inlet chamber surrounding the air inlet section. The air inlet section is provided with an air ejector inlet, and the air inlet includes an air inlet through hole provided on the chamber.

[0024] Since the air ejector inlet is circumferentially arranged on the first gas ejector pipe, it is difficult to block it with a single baffle. Therefore, an air chamber is used to enclose it, and a single air inlet is set on the air chamber to facilitate blocking with a baffle. At the same time, the shape design of the air chamber has a large margin. By setting an air chamber of a specific shape, the position layout of the baffle can be easily met, reducing the design difficulty.

[0025] Preferably, the first gas ejector tube includes an air inlet section, and the air inlet includes an air ejector inlet disposed on the air inlet section. This increases the flow rate and improves the mixing degree.

[0026] Preferably, the air ejector inlet is a cone shape that gradually narrows from the outside to the inside. This increases the flow rate and improves the mixing degree.

[0027] Preferably, the ignition structure includes a valve body connected to the first gas ejector tube, the valve body being used to supply gas to the first gas ejector tube, and a valve core within the valve body capable of opening or closing the valve body. The valve core has a probe extending to the burner, and the valve core can close the valve body after the probe detects that combustion has stopped for a preset time. This avoids the risk of explosion due to continued gas emission after flameout.

[0028] Preferably, the first gas ejector tube is connected to the inner ring of the burner, and the ignition structure further includes a second gas ejector tube connected to the outer ring of the burner.

[0029] By supplying gas to the inner and outer rings separately, the gas supply needs of each ring can be better met, thereby improving combustion efficiency.

[0030] The present invention also provides a gas stove, characterized in that it includes the ignition structure described above.

[0031] The present invention also provides an integrated kitchen system, characterized in that it includes a gas stove as described above.

[0032] The positive and progressive effects of this invention are as follows:

[0033] Therefore, when the valve stem performs the ignition operation, the baffle can block the air inlet, reduce the air flow, avoid flame lift-off due to excessive air flow, reduce the probability of flame extinguishing, and improve the ignition success rate; when ignition ends and the valve stem rotates to the working range position, the baffle can rotate with the valve stem to a position away from the air inlet, thereby avoiding the baffle blocking the air inlet from affecting the combustion efficiency. Attached Figure Description

[0034] Figure 1 A three-dimensional view of the ignition structure;

[0035] Figure 2 A three-dimensional view of the ignition structure after the baffle has been removed;

[0036] Figure 3 for Figure 1 A magnified view of part A in the middle;

[0037] Figure 4 This is a top view of the ignition structure;

[0038] Figure 5 for Figure 4 Sectional view of plane AA;

[0039] Figure 6 This is a view of the baffle rotated to its initial position.

[0040] Figure 7 This is a view of the baffle when it is rotated to a position away from the center.

[0041] Figure 8 This is a view of the intake manifold section;

[0042] Figure 9 View of the existing intake manifold section;

[0043] Figure 10 View of existing technology;

[0044] Explanation of reference numerals in the attached figures:

[0045] First gas ejector tube 100

[0046] Air Inlet 110

[0047] Intake pipe section 120

[0048] Air ejector inlet 121

[0049] Intake chamber 130

[0050] Valve stem 200

[0051] Limiting component 210

[0052] baffle 300

[0053] Shielding part 310

[0054] Elastic element 320

[0055] Pressure plate section 330

[0056] Valve body 400

[0057] Limiting stage 410

[0058] Limiting platform 411

[0059] First blocking section 412

[0060] Second blocking section 413

[0061] Ignition contact 420

[0062] Valve core 500

[0063] Gas probe 510

[0064] Second gas ejector tube 600

[0065] Burner 700

[0066] Inner Ring 710

[0067] Outer Ring 720 Detailed Implementation

[0068] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0069] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides an ignition structure including a first gas injector 100 and a valve stem 200. The valve stem 200 is connected to an ignition knob. When pressurized, the valve stem 200 can move downward from an initial position to an ignition position, allowing gas to flow into the first gas injector 100. When the pressure is released, it springs upward back to the initial position. Furthermore, the valve stem 200 can also rotate between the initial position and the operating range position.

[0070] Since the valve stem 200, which performs the above functions, is a common structure in existing gas stoves and belongs to common prior art, its working mechanism will not be further described here. However, it should be noted that the vertical movement of the valve stem 200 referred to in this invention refers to its axial movement along the valve stem 200. The direction of movement towards the bottom of the valve stem 200 is downward, and the direction of movement towards the top of the valve stem 200 is upward. Therefore, even if the valve stem 200 itself is placed at an angle or even horizontally, its movement still falls under the vertical movement referred to in this invention.

[0071] The first gas ejector 100 has an air inlet 110 on its side. The ignition structure also includes a baffle 300 movable with the valve stem 200, the baffle 300 including a blocking portion 310 extending to the side of the air inlet 110. The baffle 300 can at least partially block the air inlet 110 when it moves with the valve stem 200 between the ignition position and the initial position; and can move away from the air inlet 110 when it rotates with the valve stem 200 from the initial position toward the working interval position.

[0072] Therefore, when the valve stem 200 performs the ignition operation, the baffle 300 can block the air inlet, reduce the air flow, avoid flame lift-off due to excessive air flow, reduce the probability of flame extinguishing, and improve the ignition success rate; when ignition ends and the valve stem 200 rotates to the working range position, the baffle 300 can rotate with the valve stem 200 to a position away from the air inlet 110, thereby preventing the baffle 300 from blocking the air inlet 110 and affecting the combustion efficiency.

[0073] In summary, the ignition structure of the present invention has the advantages of high ignition efficiency and good combustion efficiency. Furthermore, since the action of the baffle 300 follows the ignition knob, the operation method is consistent with conventional ignition methods, thus offering the advantages of convenient operation and easy adaptation.

[0074] In this embodiment, when the baffle 300 moves up and down with the valve stem 200 between the ignition position and the initial position, the projection of the blocking part 310 toward the air inlet 110 completely covers the air inlet 110. By adopting the above structure, the baffle 300 can maintain the blocking of the air inlet 110 throughout the entire ignition operation of pressing down and rebounding, ensuring that the flame will not be extinguished due to excessive air flow during the entire ignition operation process.

[0075] In this embodiment, when the baffle 300 moves up and down with the valve stem 200 between the ignition position and the initial position, the distance between the shielding part 310 and the air inlet 110 is 0-3mm.

[0076] The relationship between the distance between the shield 310 and the air inlet 110 and the ignition success rate is shown in Table 1. The success rate in Table 1 was measured after 50 ignitions under the conditions of natural gas pressure of 3000 Pa, air damper fully open, and battery discharge voltage of 1.05 V.

[0077] The distance between the shield and the air inlet Success rate 0mm 100％ 1mm 100％ 2mm 92％ 3mm 84％ No baffle 54％

[0078] Table 1

[0079] Therefore, when the distance between the shielding part 310 and the air inlet 110 is 0-3mm, the ignition success rate can be maintained above 80%, providing customers with a good user experience. Preferably, the distance between the shielding part 310 and the air inlet 110 is controlled at 0-1mm to ensure the best customer user experience.

[0080] Combination Figure 3 and Figure 5 The baffle 300 moves with the valve stem 200 through the following structure: In this embodiment, the ignition structure also includes a valve body 400. The valve stem 200 is connected to the valve body 400 and can move up and down relative to the valve body 400. A limiting member 210 is provided on the part of the valve stem 200 extending outside the valve body 400. The limiting member 210 can be either a flange protruding from the surface of the valve stem 200 or a stop plate sleeved and fixed on the valve stem 200. In this embodiment, for ease of manufacturing, a stop plate sleeved and fixed on the valve stem 200 is preferably used as the limiting member 210. The upper surface of the baffle 300 abuts against the limiting member 210 and can achieve static frictional engagement with the limiting member 210. The lower surface of the baffle 300 elastically abuts against the surface of the valve body 400 through an elastic member 320. In this embodiment, the elastic member 320 is a spring.

[0081] With the above structure, when the valve stem 200 is pressed down, it can overcome the elastic force of the elastic element 320 and drive the baffle 300 to move downward together. When the force on the valve stem 200 is released, the baffle 300 and the valve stem 200 can move upward under the elastic restoring force applied by the elastic element 320. This achieves the reset of the baffle 300 and the valve stem 200, allowing the baffle 300 to move up and down with the valve stem 200. Furthermore, since the limiting element 210 and the baffle 300 are in static friction fit, when the valve stem 200 rotates, it can drive the baffle 300 to rotate with the valve stem 200.

[0082] Furthermore, by adopting the above structure, the elastic element 320 serves two purposes: firstly, it drives the valve stem 200 to rebound; secondly, it allows the baffle 300 to follow the valve stem 200. This achieves structural reuse and reduces costs.

[0083] In this embodiment, the valve body 400 is further provided with a limiting platform 410. The limiting platform 410 has a limiting plate 411 located above the surface of the valve body 400. The valve stem 200 extends into the valve body 400 through the limiting plate 411. The limiting member 210 on the valve stem 200 is placed in the limiting space between the limiting plate 411 and the surface of the valve body 400. The range of motion of the limiting member 210 can be limited by the limiting space. Specifically, the upward movement path of the limiting member 210 can be blocked by the limiting plate 411, while the downward movement path of the limiting member 210 is blocked by the surface of the valve body 400. This achieves the limitation of the vertical movement of the limiting member 210, that is, the limitation of the vertical movement stroke of the valve stem 200.

[0084] The above structure limits the travel of the valve stem 200, ensuring a consistent feel for each valve stem 200 and improving product quality.

[0085] Combination Figure 1 , Figure 4 , Figure 6 and Figure 7 In this embodiment, a first blocking part 412 and a second blocking part 413 are respectively provided on both sides of the baffle 300. The two ends of the path of the baffle 300 rotating with the valve stem 200 can be blocked by the first blocking part 412 and the second blocking part 413 to change the self-static friction fit between the baffle 300 and the limiting member 210 into a sliding friction fit. The position of the baffle 300 when blocked by the first blocking part 412 corresponds to the position where the baffle 300 blocks the air inlet 110; the position of the baffle 300 when blocked by the second blocking part 413 corresponds to the position where the baffle 300 is away from the air inlet 110.

[0086] The first blocking part 412 and the second blocking part 413 can limit the range of motion of the baffle 300 while enabling the baffle 300 to perform its original function. This reduces the space requirements for the baffle 300, facilitates the layout of the ignition structure, and reduces installation difficulty. In addition, when the baffle 300 is blocked by the first blocking part 412 or the second blocking part 413, the valve stem 200 and the baffle 300 can change from static friction fit to sliding friction fit. That is, the valve stem 200 can rotate relative to the baffle 300 at this time. Therefore, the restriction on the baffle 300 will not affect the rotation range of the valve stem 200.

[0087] Specifically, in this embodiment, the first blocking part 412 and the second blocking part are the two side plates of the limiting platform 410 used to connect the limiting platform plate 411. The two sides of the baffle 300 are respectively provided with a first abutting head and a second abutting head. The first abutting head is applied to abut against the first blocking part 412 so that the baffle 300 can be positioned to block the air inlet 110. The second abutting head is applied to abut against the second blocking part 413 so that the baffle 300 can be positioned to be away from the air inlet 110.

[0088] In this embodiment, the baffle 300 has a pressure plate portion 330 at one end away from the air inlet 110, and the upper surface of the valve body 400 has an ignition contact 420. The pressure plate portion 330 can contact and trigger the ignition contact 420 when the baffle 300 is pressed down. When the baffle 300 rotates, the projection of the relative running path of the ignition contact 420 toward the pressure plate portion 330 can fall on the pressure plate portion 330.

[0089] Since the ignition operation usually involves two steps, the first step is to press down the knob and the second step is to rotate the knob, this design ensures that the pressure plate part 330 of the baffle 300 remains in contact with the ignition contact 420 during the rotation of the knob, so as not to interrupt the ignition.

[0090] It should be noted that in the design without the first blocking part 412 and the second blocking part 413, after the ignition knob is turned to a certain angle, the baffle 300 will lose contact with the ignition contact 420, causing ignition interruption and resulting in a decreased user experience. The reason why the pressure plate part 330 can always maintain contact with the ignition contact 420 is because the range of motion of the baffle 300 is limited by the first blocking part 412 and the second blocking part 413.

[0091] Of course, to ensure that the pressure plate portion 330 of the baffle 300 always remains in contact with the ignition contact 420, the following alternative solution can be adopted: the baffle 300 has a dovetail-shaped pressure plate portion 330 at the end facing away from the air inlet 110, and the upper surface of the valve body 400 has an ignition contact 420. The pressure plate portion 330 can contact and trigger the ignition contact 420 when the baffle 300 is pressed down. When the baffle 300 rotates, the projection of the relative running path of the ignition contact 420 toward the pressure plate portion 330 can fall on the pressure plate portion 330. This alternative solution ensures that the pressure plate portion 330 always remains in contact with the ignition contact 420 by setting a pressure plate portion 330 with a specific shape. However, since the first blocking portion 412 and the second blocking portion 413 are not present in this alternative solution, the baffle 300 has a large range of motion, which may cause inconvenience to the installation layout of the subsequent ignition structure. Therefore, the solution of the present invention is still preferred.

[0092] like Figure 8As shown, in this embodiment, the first gas ejector 100 includes an intake pipe section 120 and an intake chamber 130 enclosing the intake pipe section 120. The intake pipe section 120 is provided with an air ejector inlet 121, which is tapered from the outside to the inside to increase the velocity of the air jet, thereby improving the gas mixing effect. Multiple air ejector inlets 121 are arranged circumferentially on the intake pipe section 120, and each air inlet 110 includes an intake through-hole provided on the chamber.

[0093] Since the air ejector inlet 121 is circumferentially arranged on the first gas ejector pipe 100, it is difficult to block it with a single baffle 300. Therefore, an air chamber is used to enclose it, and a single air inlet 110 is set on the air chamber to facilitate blocking with the baffle 300. At the same time, the shape design of the air inlet chamber 130 has a large margin. By setting an air chamber of a specific shape, the position layout of the baffle 300 can be easily met, reducing the design difficulty.

[0094] Of course, in other alternative methods, the air intake chamber 130 can be omitted, and the baffle 300 can directly block the air ejector inlet 121. In this case, the air inlet 110 becomes the air ejector inlet 121.

[0095] Combination Figure 1 and Figure 2 In this embodiment, the valve body 400 is connected to the first gas injector 100 to supply gas. The valve body 400 contains a valve core 500 capable of opening or closing the valve body. The valve core 500 has a probe extending to the burner 700. The valve core 500 can close the valve body 400 after the probe detects combustion has stopped for a preset time. This achieves a flameout and gas shut-off function, preventing the risk of explosion due to continued gas emission after flameout.

[0096] In this embodiment, the first gas ejector tube 100 is connected to the inner ring 710 of the burner 700, and the ignition structure also includes a second gas ejector tube 600 connected to the outer ring 720 of the burner 700. By supplying gas to the inner and outer rings 720 respectively, the gas supply needs of the inner and outer rings 720 can be better met, thereby improving combustion efficiency.

[0097] The present invention also provides a gas stove, including the ignition structure described above, thereby enabling the gas stove to also have the advantage of a high ignition success rate.

[0098] The present invention also provides an integrated kitchen system, including a gas stove as described above.

[0099] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention 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 the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An ignition structure, comprising a first gas injector and a valve stem, wherein the valve stem is capable of moving downward from an initial position to an ignition position under pressure, allowing gas to flow into the first gas injector; and rebounding upward to the initial position when the pressure is released, the valve stem also being capable of rotating between the initial position and a working range position, characterized in that: The first gas ejector tube has an air inlet on its side. The ignition structure also includes a baffle that can move with the valve stem. The baffle includes a blocking portion extending to the side of the air inlet. When the baffle moves with the valve stem between the initial position and the ignition position, it can at least partially block the air inlet. When the baffle rotates with the valve stem from the initial position toward the working range position, it can move away from the air inlet. When the baffle moves up and down between the ignition position and the initial position with the valve stem, the projection of the shielding part toward the air inlet completely covers the air inlet; When the baffle moves up and down between the ignition position and the initial position with the valve stem, the distance between the shield and the air inlet is 0-3 mm.

2. The ignition structure as described in claim 1, characterized in that: The ignition structure also includes a valve body, the valve stem is connected to the valve body and can move up and down relative to the valve body, a limiting member is provided on the part of the valve stem extending out of the valve body, the upper surface of the baffle abuts against the limiting member, and the lower surface of the baffle elastically abuts against the surface of the valve body through an elastic member.

3. The ignition structure as described in claim 2, characterized in that: The valve body is provided with a limiting platform, which has a limiting plate located above the surface of the valve body. The valve stem passes through the limiting plate, and the limiting member on the valve stem is placed in the limiting space between the limiting plate and the surface of the valve body. The range of motion of the limiting member can be limited by the limiting space.

4. The ignition structure as described in claim 1, characterized in that: The ignition structure also includes a valve body, the valve stem is disposed in the valve body, and a limiting member is provided on the part of the valve stem extending out of the valve body. The baffle abuts against the limiting member and can achieve static friction engagement with the limiting member.

5. The ignition structure as described in claim 4, characterized in that: A first blocking part and a second blocking part are respectively provided on both sides of the baffle. The two ends of the path of the baffle rotating with the valve stem can be blocked by the first blocking part and the second blocking part to change the self-static friction fit between the baffle and the limiting member into a sliding friction fit. The position of the baffle when blocked by the first blocking part corresponds to the position of the baffle blocking the air inlet. The position of the baffle when blocked by the second blocking part corresponds to the position of the baffle away from the air inlet.

6. The ignition structure as described in claim 5, characterized in that: The baffle has a pressure plate at one end away from the air inlet. The upper surface of the valve body has an ignition contact. The pressure plate can contact and trigger the ignition contact when the baffle is pressed down. When the baffle rotates, the projection of the relative running path of the ignition contact toward the pressure plate can fall on the pressure plate.

7. The ignition structure as described in claim 1, characterized in that: The ignition structure also includes a valve body, in which the valve stem is disposed. The baffle is anti-rotationally connected to the portion of the valve stem extending out of the valve body. The baffle has a dovetail-shaped pressure plate at the end opposite to the air inlet. The upper surface of the valve body has an ignition contact. The pressure plate can contact and trigger the ignition contact when the baffle is pressed down. When the baffle rotates, the projection of the relative running path of the ignition contact toward the pressure plate can fall on the pressure plate.

8. The ignition structure as described in claim 1, characterized in that: The first gas ejector tube includes an air inlet section and an air inlet chamber that surrounds the air inlet section. The air inlet section is provided with an air ejector inlet, and the air inlet includes an air inlet through hole provided on the chamber.

9. The ignition structure as described in claim 1, characterized in that: The first gas ejector tube includes an air inlet section, and the air inlet includes an air ejector inlet disposed on the air inlet section.

10. The ignition structure as described in claim 8 or 9, characterized in that: The air ejector inlet is a cone shape that gradually narrows from the outside to the inside.

11. The ignition structure as described in claim 1, characterized in that: The ignition structure includes a valve body connected to the first gas ejector tube. The valve body is used to supply gas to the first gas ejector tube. The valve body is provided with a valve core that can open or close the valve body. The valve core has a probe extending to the burner. The valve core can close the valve body after the probe detects that combustion has stopped for a preset time.

12. The ignition structure as described in claim 1, characterized in that: The first gas ejector tube is connected to the inner ring of the burner, and the ignition structure also includes a second gas ejector tube connected to the outer ring of the burner.

13. A gas stove, characterized in that: Includes the ignition structure as described in any one of claims 1 to 12.

14. An integrated kitchen system, characterized in that: Including the gas stove as described in claim 13.

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