A wok gas stove and a wok cooking method

Abstract

This invention discloses a high-heat stir-fry gas stove and a stir-fry method, comprising a control valve and a burner. The burner has a central flame ring and an outer flame ring. The control valve has an input port for connecting to a gas supply device and at least three output ports: a first output port, a second output port, and a third output port. An inner ring gas supply channel connects the first output port and the flame hole of the central flame ring. An outer ring gas supply channel connects the second output port and the flame hole of the outer flame ring. A throttling structure is provided at the front of the outer ring gas supply channel. A high-heat stir-fry gas supply channel connects the third output port and the rear of the outer ring gas supply channel. A high-heat stir-fry valve is provided on the high-heat stir-fry gas supply channel. A controller is connected to the high-heat stir-fry valve, and a high-heat stir-fry switch is connected to the controller. This invention has the advantages of simple structure, low cost, and easy control.

Description

Technical Field

[0001] This invention relates to the field of gas stove technology, and in particular to a gas stove for stir-frying and a stir-frying method. Background Technology

[0002] When the gas stove is working normally, it is in a throttling state, but when stir-frying, it needs to provide a high flame for a short time.

[0003] An existing type of high-power stir-fry stove (such as CN 115654539 A) is equipped with an angle detection device, and the maximum angle α for starting high-power stir-fry is set in the controller. 大 And the minimum angle α for starting stir-frying 小 The real-time rotation angle of the valve body is measured by an angle detection device and compared in the controller. If α 小 ≤α1≤α 大 The process involves initiating a high-heat stir-fry. This type of stir-fry control structure is complex, difficult to control, and costly. The angle detection component is a precision part, prone to failure in environments with oil fumes and high temperatures. To compare the real-time rotation angle of the valve body, the controller requires a complex chip and algorithm. The susceptibility of the angle detection component to failure degrades the user experience. The use of the angle detection component and the complex controller increases the product cost.

[0004] Another existing type of high-heat stove (such as CN 212157281 U) adds a high-heat ring to the inner and outer fire rings, but this undoubtedly makes the structure of the burner more complex and the manufacturing cost higher.

[0005] This invention was made based on this situation. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gas stove and stir-frying method that are simple in structure, low in cost, and easy to control.

[0007] This invention is achieved through the following technical solution:

[0008] To solve the above-mentioned technical problems, the present invention provides a high-power gas stove, including a control valve and a burner. The burner has a central flame ring and an outer flame ring. The control valve has an input port for connecting to a gas supply device. The control valve also has at least three output ports, namely a first output port, a second output port, and a third output port. An inner ring gas supply channel connecting the first output port and the central flame ring is provided. An outer ring gas supply channel connecting the second output port and the outer flame ring is provided. A throttling structure is provided at the front of the outer ring gas supply channel. A high-power gas supply channel connecting the third output port and the rear of the outer ring gas supply channel is provided. A high-power gas valve is provided on the high-power gas supply channel. A controller is connected to the high-power valve, and a high-power switch is connected to the controller.

[0009] To further solve the technical problem to be solved by the present invention, the present invention provides a high-heat gas stove, wherein the high-heat valve includes a high-heat valve body, the high-heat valve body is provided with a high-heat valve cavity, the high-heat valve cavity is provided with a connecting channel connecting the high-heat gas supply channel and the rear part of the outer ring gas supply channel, the high-heat valve cavity is also provided with a high-heat valve core that can open and close the connecting channel, and a driving device for driving the high-heat valve core to open and close is connected to the high-heat valve core.

[0010] To further address the technical problems to be solved by this invention, this invention provides a high-powered gas stove in which the driving device includes a driver, the high-powered valve core is connected to the output end of the driver, and the driver and controller are communicatively connected.

[0011] To further address the technical problem to be solved by the present invention, the present invention provides a gas stove for stir-frying, wherein the driving device further includes a return spring disposed between the stir-frying valve core and the stir-frying valve cavity, which can push the stir-frying valve core toward the direction of blocking the connecting channel.

[0012] To further address the technical problem to be solved by this invention, the present invention provides a high-heat gas stove in which the throttling structure includes a constricted section located at the front of the outer ring gas delivery channel, and the cross-sectional area of ​​the constricted section gradually decreases and then gradually increases along the gas travel direction.

[0013] To further address the technical problem addressed by this invention, a gas stove for stir-frying is provided by this invention. The control valve includes a main valve body and a rotary main valve core fitted within the main valve body. A knob is connected to the main valve core. A first output port, a second output port, and a third output port are all located on the side wall of the main valve body. A gas supply channel is provided within the main valve core. Three valve ports, a first valve port, a second valve port, and a third valve port, are located on the side wall of the main valve core and connect to the gas supply channel. During rotation of the main valve core, the first valve port can communicate with the first output port, the second valve port can communicate with the second output port, and the third valve port can communicate with the third output port. The first valve port is an oblong hole, while the second and third valve ports are both circular holes aligned vertically. Furthermore, the diameter of the third valve port is smaller than the diameter of the second valve port.

[0014] This invention is also achieved through the following technical solutions:

[0015] To solve the above-mentioned technical problems, the present invention provides a stir-fry control method using the above-mentioned stir-fry gas stove, wherein a knob is connected to the control valve, and the method includes the following steps:

[0016] S1: Press down and rotate the control valve knob to start ignition. The rotation angle of the knob is α. When the rotation angle α>0, the control valve opens the first and second output ports, and the inner ring gas supply channel and the outer ring gas supply channel start to supply gas, respectively supplying gas to the central flame ring and the outer flame ring.

[0017] S2: When the knob is rotated to angle A1, the third output port is gradually opened, and the gas supply channel for stir-frying is ventilated but there is no gas flow;

[0018] S3: When A1<α<A2, manually start the stir-fry switch. After the stir-fry switch is started, the controller receives the stir-fry start signal and controls the stir-fry valve to start. After the stir-fry valve opens, the stir-fry gas supply channel is connected to the rear of the outer ring gas supply channel, and gas is supplied to the outer fire ring at the same time, entering the stir-fry mode.

[0019] S4: If the stir-fry switch is manually turned off, the controller receives the stir-fry off signal, controls the stir-fry valve to close, disconnects the stir-fry gas supply channel from the rear of the outer ring gas supply channel, and the stir-fry stops; if the stir-fry switch is not manually turned off, when the rotation angle α>A2, the control valve will completely close the third output port, and the stir-fry gas supply channel will automatically close.

[0020] S5: When the knob is rotated to 180°, the control valve will completely close the first and second output ports, and the gas stove will turn off.

[0021] In order to further solve the technical problem to be solved by the present invention, in the stir-fry control method provided by the present invention, in step S2, 0°<A1<90°; in steps S3 and S4, 90°<A2<180°.

[0022] To further address the technical problem addressed by this invention, a stir-fry control method is provided where, when A1 < α < A2, all third output ports are open. Furthermore, as the rotation angle α gradually increases from A1 to 90°, the ventilation volume of the stir-fry gas delivery channel gradually increases; as the rotation angle α gradually increases from 90° to A2, the ventilation volume of the stir-fry gas delivery channel gradually decreases until it is completely closed; as the rotation angle α gradually increases from 0° to 90°, the ventilation volume of both the inner and outer ring gas delivery channels gradually increases; and as the rotation angle α gradually increases from 90° to 180°, the ventilation volume of both the inner and outer ring gas delivery channels gradually decreases until it is completely closed.

[0023] To further address the technical problem to be solved by this invention, the stir-fry control method provided by this invention further includes the following specific operations in step S4: If timed stir-frying is performed, the stir-frying duration is set to T1 in the controller. After the controller receives the stir-frying start signal and opens the stir-frying valve, it starts timing T2 and compares T2 with T1. When T2 = T1, the controller controls the stir-frying valve to close, thereby closing the stir-frying gas supply channel.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. The stir-fry gas supply channel of this invention forms a separate gas supply channel, directly guiding the gas from the third output port of the control valve to the rear of the outer ring gas supply channel, bypassing the throttling structure. After the stir-fry valve is opened, a large amount of gas can quickly enter the rear of the outer ring gas supply channel through the stir-fry gas supply channel, and then enter the outer fire ring, increasing the firepower of the outer fire ring, thereby achieving stir-frying. This invention only adds a stir-fry gas supply channel between the control valve and the rear of the outer ring gas supply channel, and sets a stir-fry valve on the stir-fry gas supply channel, with minimal modifications and a relatively simple structure. Moreover, this invention can control the on / off of the stir-fry function by directly controlling the opening and closing of the stir-fry valve, which is relatively easy to control. In addition, this invention does not change the structure of the burner, that is, ordinary, standardized burners can be used, which helps to reduce costs.

[0026] 2. The actuator of the present invention is connected to a controller, which controls the opening and closing of the stir-fry valve. It is worth noting that the stir-fry valve of the present invention only has two states: open and closed, eliminating the need for partial opening and closing, thus making it easier to control. Furthermore, since the stir-fry valve of the present invention only needs to perform an on / off function, a common, standardized solenoid valve can be used, reducing the cost of the stir-fry valve.

[0027] 3. The control valve of the present invention is purely mechanical, with a simple structure, high reliability, and easy control. In addition, the heat of stir-frying can be directly controlled by the knob of the control valve, and the stir-fry valve only needs to play the role of on and off. Attached Figure Description

[0028] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a top view of the invention. Figure 1 (with panel);

[0030] Figure 2 This is a top view of the invention. Figure 2 (Panel not shown);

[0031] Figure 3 This is a three-dimensional structural diagram of the main components controlling the stir-frying process of this invention;

[0032] Figure 4 This is a cross-sectional schematic diagram of the outer ring gas transmission channel;

[0033] Figure 5 This is a cross-sectional schematic diagram of the gas supply channel for stir-frying;

[0034] Figure 6 This is a cross-sectional view of the stir-fry valve;

[0035] Figure 7 This is a three-dimensional structural diagram of the control valve;

[0036] Figure 8 This is a schematic diagram of the longitudinal section of the control valve;

[0037] Figure 9 This is a schematic diagram of a control valve explosion.

[0038] The icons represent: 1-Control valve, 1a-Main valve body, 1b-Main valve core, 1b1-Input port, 1c-Gas supply channel, 11-First output port, 12-Second output port, 13-Third output port, 14-First valve port, 15-Second valve port, 16-Third valve port, 2-Burner, 21-Center flame ring, 22-Outer flame ring, 211-Center flame hole, 221-Outer flame hole, 3-Inner ring gas supply channel, 4-Outer ring gas supply channel, 41-Neck section, 5-Stir-fry gas supply channel, 6-Stir-fry valve, 61-Stir-fry valve body, 62-Stir-fry valve cavity, 63-Connecting channel, 64-Stir-fry valve core, 65-Drive device, 651-Driver, 652-Reset spring, 7-Controller, 8-Stir-fry switch, 9-Knob. Detailed Implementation

[0039] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] like Figures 1 to 9 The gas stove shown includes a control valve 1 and a burner 2. The burner 2 has a central flame ring 21 and an outer flame ring 22. The central flame ring 21 has a central flame nozzle 211, and the outer flame ring 22 has an outer flame nozzle 221 (e.g., ...). Figure 2 (As shown). The control valve 1 has an input port 1b1 (as shown). Figure 8 As shown in the figure, the input port 1b1 is used to connect to the gas supply equipment. The control valve 1 is also provided with at least three output ports, namely the first output port 11, the second output port 12 and the third output port 13.

[0041] like Figure 3 As shown, an inner ring gas supply channel 3 connects the first output port 11 and the flame hole (central flame hole 211) of the central flame ring 21, and an outer ring gas supply channel 4 connects the second output port 12 and the flame hole (outer flame hole 221) of the outer flame ring 22. The inner ring gas supply channel 3 supplies gas to the central flame ring 21, and the outer ring gas supply channel 4 supplies gas to the outer flame ring 22.

[0042] like Figure 4As shown, the outer ring gas supply channel 4 has a throttling structure at its front. More specifically, the throttling structure includes a constriction section 41 at the front of the outer ring gas supply channel 4, and the cross-sectional area of ​​the constriction section 41 gradually decreases and then gradually increases along the gas flow direction. That is, the constriction section 41 is a small-diameter channel, and the cross-sectional area of ​​the constriction section 41 accounts for 10% to 20% of the other parts. Both the front and rear of the constriction section 41 are funnel-shaped transition sections. This throttling structure mainly functions to throttle the flow, allowing the gas stove to control the flow rate of gas passing through the outer ring gas supply channel 4 during normal use, thereby reducing gas waste.

[0043] Because the outer ring gas transmission channel 4 has a throttling structure, the amount of gas passing through it is not large enough to directly achieve the stir-frying function. Therefore, this invention designs a separate stir-frying gas transmission channel 5, which bypasses the throttling structure and instantly increases the gas transmission volume of the outer ring gas transmission channel 4. The specific structure is as follows: Figure 3 , Figure 5 , Figure 6 As shown, a stir-fry gas supply channel 5 is provided between the third output port 13 and the rear part of the outer ring gas supply channel 4, connecting the two. A stir-fry valve 6 is installed on the stir-fry gas supply channel 5. Clearly, the stir-fry gas supply channel 5 forms a separate gas supply channel, directly guiding the gas from the third output port 13 of the control valve 1 to the rear part of the outer ring gas supply channel 4, bypassing the throttling structure. After the stir-fry valve 6 is opened, a large amount of gas can quickly enter the rear part of the outer ring gas supply channel 4 through the stir-fry gas supply channel 5, and then enter the flame hole of the outer flame ring 22, increasing the firepower of the outer flame ring 22, thereby achieving stir-frying.

[0044] It is worth noting that this invention only adds a stir-fry gas delivery channel 5 between the control valve 1 and the rear of the outer ring gas delivery channel 4, and sets a stir-fry valve 6 on the stir-fry gas delivery channel 5. The modifications are minor, and the structure is relatively simple. Moreover, this invention can control the on / off state of the stir-fry function by directly controlling the opening and closing of the stir-fry valve 6, which is relatively easy to control. In addition, this invention does not change the structure of the burner 2, meaning that a common, standardized burner 2 can be used, which helps to reduce costs.

[0045] More specifically, such as Figure 6As shown, the stir-fry valve 6 is used to connect or disconnect the rear part of the stir-fry gas supply channel 5 and the outer ring gas supply channel 4. The stir-fry valve 6 includes a stir-fry valve body 61, a stir-fry valve chamber 62 within the valve body 61, a connecting channel 63 connecting the rear part of the stir-fry gas supply channel 5 and the outer ring gas supply channel 4 within the valve chamber 62, and a stir-fry valve core 64 capable of opening and closing the connecting channel 63 within the valve chamber 62. A driving device 65 for driving the stir-fry valve core 64 to open and close is connected to the valve core 64. Further, the driving device 65 includes a driver 651, and the stir-fry valve core 64 is connected to the output end of the driver 651. Further, the driving device 65 also includes a return spring 652 disposed between the stir-fry valve core 64 and the stir-fry valve chamber 62, capable of pressing the stir-fry valve core 64 towards blocking the connecting channel 63. Figure 6 As shown, when the stir-fry valve core 64 opens the connecting channel 63, the rear of the stir-fry gas supply channel 5 and the outer ring gas supply channel 4 are connected. The gas in the stir-fry gas supply channel 5 enters the rear of the outer ring gas supply channel 4 and then enters the flame hole of the outer flame ring 22. In other words, at this time, the stir-fry gas supply channel 5 and the outer ring gas supply channel 4 jointly supply gas to the outer flame ring 22, thus achieving the stir-fry function. To turn off the stir-fry function, simply close the stir-fry valve 6. Moreover, because two pipes (the stir-fry gas supply channel 5 and the outer ring gas supply channel 4) simultaneously supply gas to the outer flame ring 22, the stir-fry heat is relatively high.

[0046] Of course, the so-called "stir-fry valve 6" is actually a solenoid valve. For example... Figure 2 As shown, a controller 7 is connected to the actuator 651, which controls the opening and closing of the stir-fry valve 6. It is worth noting that the stir-fry valve 6 of this invention only needs to be in two states: open and closed, without the need for partial opening or closing, thus making it easier to control.

[0047] Furthermore, since the stir-fry valve 6 of this invention only needs to perform an on / off function, a common, standardized solenoid valve can be used, thus reducing the cost of the stir-fry valve 6.

[0048] Furthermore, such as Figure 1 As shown, the controller 7 is connected to a stir-fry switch 8. Preferably, the controller 7 may also have an internal timer to automatically control the stir-frying time.

[0049] More specifically, such as Figures 7-9 As shown, the control valve 1 includes a main valve body 1a and a rotary main valve core 1b fitted in the main valve body 1a. The main valve core 1b is provided with a knob 9 (e.g., Figure 1As shown, the first output port 11, the second output port 12, and the third output port 13 are all located on the side wall of the main valve body 1a. The main valve core 1b contains a gas supply channel 1c, and the side wall of the main valve core 1b has three valve ports communicating with the gas supply channel 1c: the first valve port 14, the second valve port 15, and the third valve port 16. After the gas enters the gas supply channel 1c from the input port 1b1, it passes through the three valve ports and the three output ports, and then enters the inner ring gas supply channel 3, the outer ring gas supply channel 4, and the stir-fry gas supply channel 5. Naturally, the first valve port 14, the second valve port 15, and the third valve port 16 are respectively opposite to the first output port 11, the second output port 12, and the third output port 13.

[0050] More specifically, the first valve port 14 is an oblong hole, and the second valve port 15 and the third valve port 16 are both round holes aligned vertically, with the diameter of the third valve port 16 being smaller than the diameter of the second valve port 15. Furthermore, the first valve port 14 is circumferentially offset from the second valve port 15 and the third valve port 16.

[0051] like Figures 7-9 As shown, when the main valve core 1b rotates, during the rotation from 0° to 90°, the first valve port 14 gradually connects with the first output port 11 and the channel opening becomes larger, while the second valve port 15 gradually connects with the second output port 12 and the channel opening becomes larger. During the rotation from 90° to 180°, the channel opening between the first valve port 14 and the first output port 11 becomes smaller until it is completely closed, and the channel opening between the second valve port 15 and the second output port 12 becomes smaller until it is completely closed. However, the third valve port 16 can be different from the third output port 13. When the rotation angle of the main valve core 1b is α, A1 < α < A2 (where A1 and A2 are constant values, 0° < A1 < 90°, 90° < A2 < 180°), the third valve port 16 can connect with the third output port 13. Therefore, the stir-fry mode can only be activated when A1 < α < A2. In this invention, A1 is preferably 75°, and A2 is preferably 105°. Compared to CN115654539A, which relies on an angle sensor, the control valve 1 of this invention is purely mechanical, with a simple structure, high reliability, and easy control. In addition, the intensity of the stir-fry can be directly controlled by the knob 9 of the control valve 1, and the stir-fry valve 6 only needs to perform the function of opening and closing.

[0052] The present invention also includes a method for controlling stir-frying using the above-mentioned high-heat gas stove, comprising the following steps:

[0053] S1: Press down and rotate the knob 9 of the control valve 1 to start ignition. The rotation angle of the knob 9 is α. When the rotation angle α>0, the control valve 1 opens the first output port 11 and the second output port 12. The inner ring gas supply channel 3 and the outer ring gas supply channel 4 start to supply gas, respectively supplying gas to the central flame ring 21 and the outer flame ring 22.

[0054] S2: When the knob 9 is rotated to angle A1, the third output port 13 is gradually opened, the stir-fry gas supply channel 5 is ventilated but there is no gas flow. At this time, the stir-fry switch 8 can be started.

[0055] S3: When A1<α<A2, manually start the stir-fry switch 8. After the stir-fry switch 8 is started, the controller 7 receives the stir-fry start signal and controls the stir-fry valve 6 to start. After the stir-fry valve 6 is opened, the stir-fry gas supply channel 5 is connected to the rear of the outer ring gas supply channel 4, and at the same time, gas is supplied to the outer fire ring 22, and the stir-fry mode is entered.

[0056] S4: If the stir-fry switch 8 is manually turned off, the controller 7 receives the stir-fry off signal and controls the stir-fry valve 6 to close, disconnecting the stir-fry gas supply channel 5 from the rear of the outer ring gas supply channel 4, thus stopping the stir-frying. If the stir-fry switch 8 is not manually turned off, when the rotation angle α>A2, the control valve 1 completely closes the third output port 13, and the stir-fry gas supply channel 5 automatically closes.

[0057] S5: When knob 9 is rotated to 180°, control valve 1 completely closes the first output port 11 and the second output port 12, and the gas stove is turned off.

[0058] More specifically, in step S2, 0° < A1 < 90°; in steps S3 and S4, 90° < A2 < 180°. A1 and A2 are both preset values. In this invention, A1 is preferably 75°, and A2 is preferably 105°.

[0059] More specifically, as the rotation angle α of knob 9 gradually increases from 0° to 90°, the air volume of the inner ring air supply channel 3 and the outer ring air supply channel 4 gradually increases; as the rotation angle α gradually increases from 90° to 180°, the air volume of the inner ring air supply channel 3 and the outer ring air supply channel 4 gradually decreases until they are completely closed.

[0060] More specifically, this invention defines the range of the stir-fry activation, namely A1 < α < A2. When A1 < α < A2, the third output port 13 is always open, and as the rotation angle α gradually increases from A1 to 90°, the airflow of the stir-fry gas supply channel 5 gradually increases; as the rotation angle α gradually increases from 90° to A2, the airflow of the stir-fry gas supply channel 5 gradually decreases until it is completely closed. Clearly, this invention can control the intensity of the stir-fry by directly controlling the rotation angle α of the knob 9.

[0061] More specifically, in addition to manually turning off the stir-fry switch 8 and directly closing the stir-fry gas supply channel 5 via the knob 9 as described in step S4, the stir-fry mode can also be turned off at a set time. That is, step S3 also includes the following specific operations: The stir-fry duration is set to T1 in the controller 7. After the controller 7 receives the stir-fry start signal and opens the stir-fry valve 6, it starts timing T2 and compares T2 with T1. When T2 = T1, the controller 7 controls the closing of the stir-fry valve 6, thereby closing the stir-fry gas supply channel 5. In other words, this invention allows the controller 7 to automatically time and close the stir-fry valve 6 after the set stir-fry duration T1, making it more intelligent.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A gas stove for stir-frying, characterized in that: The device includes a control valve (1) and a burner (2), the burner (2) having a central flame ring (21) and an outer flame ring (22). The control valve (1) has an inlet (1b1) for connecting to a gas supply device. The control valve (1) also has at least three outlets, namely a first outlet (11), a second outlet (12), and a third outlet (13). An inner ring gas supply channel (3) connecting the first outlet (11) and the central flame ring (21) is provided, and an outer ring gas supply channel connecting the second outlet (12) and the outer flame ring (22) is provided. The outer ring gas transmission channel (4) is provided with a throttling structure at the front; the throttling structure includes a necking section (41) at the front of the outer ring gas transmission channel (4), and the cross-sectional area of ​​the necking section (41) gradually decreases and then gradually increases along the gas travel direction; a stir-fry gas transmission channel (5) connecting the third outlet (13) and the rear of the outer ring gas transmission channel (4) is provided, and a stir-fry valve (6) is provided on the stir-fry gas transmission channel (5); a controller (7) is connected to the stir-fry valve (6), and a stir-fry switch (8) is connected to the controller (7); The control valve (1) includes a main valve body (1a) and a rotary main valve core (1b) fitted in the main valve body (1a). A knob (9) is connected to the main valve core (1b). The first output port (11), the second output port (12) and the third output port (13) are all located on the side wall of the main valve body (1a). The main valve core (1b) is provided with an air supply channel (1c). The side wall of the main valve core (1b) is provided with three valve ports that communicate with the air supply channel (1c), namely the first valve port (14), the second valve port (15) and the third valve port (16). During the rotation of the main valve core (1b), the first valve port (14) can communicate with the first output port (11), the second valve port (15) can communicate with the second output port (12), and the third valve port (16) can communicate with the third output port (13). The first valve port (14) is an oblong hole, the second valve port (15) and the third valve port (16) are both round holes and aligned vertically, and the diameter of the third valve port (16) is smaller than the diameter of the second valve port (15).

2. The gas stove for stir-frying according to claim 1, characterized in that: The stir-fry valve (6) includes a stir-fry valve body (61), a stir-fry valve cavity (62) is provided in the stir-fry valve body (61), a connecting channel (63) is provided in the stir-fry gas supply channel (5) and the rear of the outer ring gas supply channel (4) in the stir-fry valve cavity (62), and a stir-fry valve core (64) that can open and close the connecting channel (63) is also provided in the stir-fry valve cavity (62), and a driving device (65) for driving the stir-fry valve core (64) to open and close is connected to the stir-fry valve core (64).

3. A gas stove for stir-frying according to claim 2, characterized in that: The drive device (65) includes a driver (651), the stir-fry valve core (64) is connected to the output end of the driver (651), and the driver (651) is communicatively connected to the controller (7).

4. A gas stove for stir-frying according to claim 3, characterized in that: The drive device (65) further includes a return spring (652) disposed between the stir-fry valve core (64) and the stir-fry valve chamber (62) and capable of pressing the stir-fry valve core (64) toward blocking the connecting channel (63).

5. A method for controlling the stir-frying process using a gas stove according to any one of claims 1-4, characterized in that, The control valve (1) is connected to a knob (9), and includes the following steps: S1: Press down and rotate the knob (9) of the control valve (1) to start ignition. The rotation angle of the knob (9) is α. When the rotation angle α>0, the control valve (1) opens the first output port (11) and the second output port (12). The inner ring gas supply channel (3) and the outer ring gas supply channel (4) start to supply gas, respectively supplying gas to the central fire ring (21) and the outer fire ring (22). S2: When the knob (9) is rotated to angle A1, the third output port (13) is gradually opened, and the gas supply channel (5) is ventilated but there is no gas flow; S3: When A1<α<A2, manually start the stir-fry switch (8). After the stir-fry switch (8) is started, the controller (7) receives the stir-fry start signal and controls the stir-fry valve (6) to start. After the stir-fry valve (6) is opened, the stir-fry gas supply channel (5) is connected to the rear of the outer ring gas supply channel (4), and gas is supplied to the outer fire ring (22) at the same time, and the stir-fry mode is entered. S4: If the stir-fry switch (8) is manually turned off, the controller (7) receives the stir-fry off signal, controls the stir-fry valve (6) to close, the stir-fry gas supply channel (5) is disconnected from the rear of the outer ring gas supply channel (4), and the stir-fry stops; if the stir-fry switch (8) is not manually turned off, when the rotation angle α>A2, the control valve (1) completely closes the third output port (13), and the stir-fry gas supply channel (5) is automatically closed; S5: When the knob (9) is rotated to 180°, the control valve (1) completely closes the first output port (11) and the second output port (12), and the gas stove is turned off.

6. The stir-fry control method according to claim 5, characterized in that: In step S2, 0° < A1 < 90°; in steps S3 and S4, 90° < A2 < 180°.

7. The stir-fry control method according to claim 6, characterized in that: When A1 < α < A2, the third output port (13) is open. As the rotation angle α gradually increases from A1 to 90°, the ventilation of the stir-fry gas supply channel (5) gradually increases. As the rotation angle α gradually increases from 90° to A2, the ventilation of the stir-fry gas supply channel (5) gradually decreases until it is completely closed. As the rotation angle α gradually increases from 0° to 90°, the ventilation of the inner ring gas supply channel (3) and the outer ring gas supply channel (4) gradually increases. As the rotation angle α gradually increases from 90° to 180°, the ventilation of the inner ring gas supply channel (3) and the outer ring gas supply channel (4) gradually decreases until it is completely closed.

8. The stir-fry control method according to claim 5, characterized in that: Step S4 also includes the following specific operations: If the stir-fry is timed, the stir-fry duration is set to T1 in the controller (7). After the controller (7) obtains the stir-fry start signal and opens the stir-fry valve (6), it starts timing T2 and compares T2 with T1. When T2=T1, the controller (7) controls the shut-off of the stir-fry valve (6), thereby shutting off the stir-fry gas supply channel (5).

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