Electric control valve and intelligent gas stove

Abstract

The utility model relates to the technical field of gas stoves, in particular to an electric control valve and an intelligent gas stove. The electric control valve comprises a valve body, a valve element, a valve rod, a circuit board, a driving piece and a transmission assembly. The valve rod drives the valve core to be rotatably arranged in the valve body; the transmission assembly is connected with the valve rod; the driving piece is connected with the transmission assembly to drive the transmission assembly to rotate relative to the valve body. A magnetic switch is arranged on the circuit board, and a magnet piece is arranged on the transmission assembly. The electric control valve has a first state in which the transmission assembly drives the magnet part to approach the magnetic switch when rotating so as to switch on the magnetic switch and generate a zero potential signal, and a second state in which the magnet part is far away from the magnetic switch. Therefore, gear angle control and adjustment of the magnetic switch can be completed timely and efficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, and in particular to an electric control valve and an intelligent gas stove. Background Art

[0002] The gas valve is the core component of the gas stove. It generally includes a valve body, a valve core, a valve stem, a shift fork and a solenoid valve. The valve body is provided with an air inlet channel, an air outlet channel and a valve core cavity therebetween. The valve core is a cone-shaped valve installed in the valve core cavity. One end of the valve stem extends into the valve body and passes through the valve core. When the plug valve needs to be opened, the valve stem pushes the solenoid valve open through the shift fork. After opening, the valve core can be driven to rotate to adjust the gas flow in the air outlet channel. However, with the development of intelligent products, the existing plug valve technology can no longer meet the demand for automatic control of firepower in intelligent cooking, and it is necessary to develop an electric control valve to meet the above needs.

[0003] The Chinese patent document with publication number CN202418775U discloses an electric control gas valve, including a valve body and a stepper motor installed on the valve body, the valve body is provided with an air inlet hole, an air outlet gear hole and a plug hole of a built-in valve core, the output shaft of the stepper motor is connected with the valve core through a transmission member, the motor drives the valve core to rotate and electrically conduct with the contact point through the metal block provided thereon, so as to realize the gas quantity gear adjustment position control; its disadvantages are:

[0004] 1) The gas level adjustment using contact control is not accurate enough and has blind spots;

[0005] 2) The structure is scattered, not compact enough, takes up space, and has poor versatility. Utility Model Content

[0006] The purpose of the utility model includes, for example, providing an electric control valve and an intelligent gas stove, which can timely and efficiently complete the gear angle control and adjustment of the magnetic switch.

[0007] The embodiments of the present invention can be implemented as follows:

[0008] In a first aspect, the utility model provides an electric control valve, comprising:

[0009] A valve body, a valve core, a valve stem, a circuit board, a driving member, and a transmission assembly; the valve stem drives the valve core to be rotatably disposed in the valve body; the transmission assembly is connected to the valve stem; the driving member is connected to the transmission assembly to drive the transmission assembly to rotate relative to the valve body;

[0010] A magnetic switch is provided on the circuit board, and a magnet is provided on the transmission assembly; the electric control valve has a first state in which the transmission assembly drives the magnet to approach the magnetic switch when it rotates, so that the magnetic switch is turned on and generates a zero potential signal, and a second state in which the magnet is away from the magnetic switch.

[0011] In an optional embodiment, it further comprises a box body, wherein the box body comprises a box seat and a box cover;

[0012] The box seat is a barrel-shaped structure, and the box cover seals the opening of the box seat to form a closed accommodation space; the circuit board and the transmission assembly are both located in the accommodation space;

[0013] The bottom of the box seat is provided with a through hole, the valve stem passes through the through hole, and the valve stem can seal the through hole.

[0014] In an optional embodiment, the top of the valve stem is located in the accommodating space.

[0015] In an optional embodiment, a sealing boss is provided on the bottom outer wall of the box seat, and the sealing boss extends along the periphery of the through hole;

[0016] The valve body has a valve core cavity for accommodating the valve core, and the sealing boss is clamped on the inner wall of the top opening of the valve core cavity.

[0017] In an optional embodiment, it further comprises an arc-shaped limiting boss, the limiting boss is arranged on the sealing boss, the limiting boss is clamped on the inner wall of the top opening of the valve core cavity, and the sealing boss extends toward the direction of the valve core;

[0018] A rod needle is arranged at the bottom of the valve stem, and the rod needle protrudes from the surface of the valve stem; the rod needle is configured so that when the valve stem rotates, the rod needle can be pressed against the side wall of the limiting boss.

[0019] In an optional embodiment, an annular boss is provided on the top inner wall of the box cover; and the top of the valve stem is rotatably disposed in the annular boss.

[0020] In an optional embodiment, a transmission shaft in the transmission assembly facing the valve stem has a preset distance from an output shaft of the driving member; and a length of the distance between the driving member and the valve stem is less than a length of the preset distance.

[0021] In an optional embodiment, the transmission assembly includes a main transmission member, a secondary transmission member, and a transmitted member;

[0022] The main transmission member, the secondary transmission member, and the transmitted member are all gear structures;

[0023] The output shaft of the driving member is connected to the main transmission member; the output end of the main transmission member is meshed with the input end of the secondary transmission member, and the output end of the secondary transmission member is meshed with the input end of the driven member; the valve stem is arranged on the driven member;

[0024] The magnet component is installed on the transmitted component.

[0025] In an optional embodiment, along the length direction of the valve body, the main transmission member, the secondary transmission member, and the driven member are arranged in sequence; and the valve stem is spaced apart from the driving member.

[0026] In a second aspect, the utility model provides an intelligent gas stove, which includes a control panel, a key panel and an electric control valve as described in any one of the aforementioned embodiments;

[0027] The keypad is electrically connected to the circuit board of the electric control valve through the control board;

[0028] The keypad is configured to send a command signal to the control panel, and the circuit board controls the motor to drive the rotating assembly, valve stem, and valve core to first return to the zero position, and then rotate to the gear position that needs to be adjusted.

[0029] The beneficial effects of the embodiments of the present utility model include, for example:

[0030] Such an electric control valve includes a valve body, a valve core, a valve stem, a circuit board, a driving member, and a transmission assembly. Because a magnetic switch is provided on the circuit board, a magnet is provided at the position of the transmission assembly facing the circuit board. That is, when the transmission assembly drives the valve core to rotate, the magnet on the transmission assembly approaches the magnetic switch, so that the magnetic switch is turned on and generates a zero potential signal, so that the stove control system receives its signal and determines that the transmission assembly and the driving member are already in the original position. Furthermore, based on the original position, the circuit board will adjust the rotation of the valve core to a preset angle, so as to transmit the power to the corresponding gear position to work, thereby ensuring the accuracy of the firepower gear position adjustment and avoiding gear adjustment disorder. In summary, the electric control valve of this scheme has a simple structure, compact layout, and precise gear control. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A partial cross-sectional view of an electrically controlled valve according to an embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the structure of the electric control valve according to an embodiment of the utility model;

[0034] Figure 3 A schematic structural diagram of the electric control valve of an embodiment of the utility model from another perspective;

[0035] Figure 4 A structural schematic diagram of the electric control valve of an embodiment of the utility model from another perspective;

[0036] Figure 5 This is a schematic diagram of the structure of the transmission assembly of the electric control valve according to an embodiment of the utility model;

[0037] Figure 6 It is a structural schematic diagram of the valve core of the electric control valve according to an embodiment of the utility model;

[0038] Figure 7 It is a structural schematic diagram of a box cover of an electric control valve according to an embodiment of the utility model;

[0039] Figure 8 This is a schematic diagram of the structure of the intelligent gas stove according to an embodiment of the utility model;

[0040] Fig. 9 This is a working flow chart of the intelligent gas stove according to an embodiment of the utility model.

[0041] Icons: 01-circuit board; 02-valve stem; 21-rod needle; 22-strip boss; 03-box body; 31-box cover; 32-box seat; 311-annular boss; 04-transmission assembly; 41-main transmission member; 42-secondary transmission member; 43-transmitted member; 431-magnet member; 05-driving member; 06-valve body; 61-valve core; 611-strip groove; 612-gas outlet gear hole; 62-self-priming valve; 63-gas outlet; 64-gas inlet; 73-sealing boss; 74-limiting boss; 100-gas valve; 200-control panel; 300-burner; 400-ignition device; 500-thermocouple; 600-gas pipeline; 700-keyboard; 701-gear adjustment key; 702-power key; 703-ignition start key; 800-burner head. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0046] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0047] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0048] Please refer to Figure 1 This embodiment provides an electrically controlled valve, including a valve body 06 , a valve core 61 , a valve stem 02 , a circuit board 01 , a driving member 05 , and a transmission assembly 04 .

[0049] The valve stem 02 drives the valve core 61 to be rotatably disposed in the valve body 06; the transmission assembly 04 is connected to the valve stem 02; the driving member 05 is connected to the transmission assembly 04 to drive the transmission assembly 04 to rotate relative to the valve body 06;

[0050] A magnetic switch is provided on the circuit board 01, and a magnet 431 is provided on the transmission component 04; the electric control valve has a first state in which the transmission component 04 rotates to drive the magnet 431 close to the magnetic switch, so that the magnetic switch is turned on and a zero potential signal is generated, and a second state in which the magnet 431 is away from the magnetic switch.

[0051] That is, the transmission component 04 is configured to drive the magnet 431 close to the magnetic switch when the valve core 61 rotates, so that the magnetic switch is turned on and generates a zero potential signal, so that the cooker control system receives the signal and determines that the transmission component 04 and the driving member 05 are already in the original position.

[0052] Such an electrically controlled valve includes a valve body 06 , a valve core 61 , a valve stem 02 , a circuit board 01 , a driving member 05 , and a transmission assembly 04 .

[0053] The driving member 05 of the electric control valve of this embodiment provides a driving force to drive the transmission component 04 to rotate, so that the valve stem 02 provided on the transmission component 04 drives the valve core 61 to rotate, and the transmission component 04 drives the magnet member 431 to rotate while rotating. When the magnet member 431 on the transmission component 04 is close to the magnetic switch on the circuit board 01, the magnetic switch is turned on and generates a zero potential signal, so that the stove control system receives its signal and determines that the transmission component 04 and the driving member 05 are already in the original position. Further, the circuit board 01 will adjust the rotation of the valve core 61 to a preset angle based on the original position, so as to transmit to the corresponding gear position to work, ensure the accuracy of the firepower gear position adjustment, and avoid gear adjustment disorder. In summary, the electric control valve of this scheme has a simple structure and a compact layout, and uses a magnetic switch to realize zero-position detection to realize precise control and adjustment of the firepower gear position of the intelligent stove.

[0054] Please continue reading Figures 1 to 9 , to learn more structural details of the electric control valve.

[0055] from Figure 1 , Figure 2 , Figure 3 , Figure 4 It can be seen from the figure that the driving member 05 is a motor and the circuit board 01 is a PCB circuit board 01. The electric control valve of this embodiment is a plug valve.

[0056] Specifically, the surface of the valve body 06 has an air inlet 64 and an air outlet 63; the valve core 61 has air outlet gear holes 612 of different gears; the driving member 05 is connected to the transmission assembly 04 to drive the transmission assembly 04 to rotate; the transmission assembly 04 is connected to the valve core 61 through the valve stem 02; the driving member 05 is configured to be able to drive the valve core 61 to rotate, so that the gas from the air inlet 64 is discharged from the preset air outlet gear hole 612 to the air outlet 63, thereby realizing automatic control of the gas quantity gear adjustment.

[0057] Furthermore, an air inlet channel is provided inside the valve body 06, and a valve core cavity and an air outlet channel are provided on one side. The air inlet channel and the valve core cavity intersect to form an air inlet 64, and the air outlet channel and the valve core cavity intersect to form an air outlet 63. Optionally, the valve body 06 has two air outlets 63 and one air inlet 64. Furthermore, a self-priming valve 62 for controlling the ignition device 400 is also provided on the valve body 06, and the self-priming valve 62 and the two air outlets 63 are provided on the same side of the valve body 06, so that the overall structural design is more compact, occupies less space, is convenient for the effective layout of the stove product, and is also convenient for installation and maintenance.

[0058] It can also be seen from the figure that in this embodiment of the utility model, the electric control valve also includes a box body 03, the box body 03 includes a box seat 32 and a box cover 31; the box seat 32 is a barrel-shaped structure, and the box cover 31 seals the opening of the box seat 32 to form a closed accommodating space; the circuit board 01 and the transmission assembly 04 are both located in the accommodating space; the bottom of the box seat 32 has a through hole, the valve stem 02 is penetrated by the through hole, and the valve stem 02 can seal the through hole.

[0059] The PCB board is fixed on the box body 03. A magnetic switch is provided on the PCB board as a motor start zero position signal. When the motor rotates the output terminal to the original position, the magnet 431 provided on the transmission component 04 is close to the magnetic switch provided on the PCB board. The magnetic switch is turned on and a zero potential signal is generated. The cooker control system receives the signal and determines that the transmission component 04 and the motor are already in the original position.

[0060] Furthermore, the top of the valve stem 02 is located in the accommodation space, that is, the top of the valve stem 02 is completely arranged inside the box body 03. Compared with the arrangement in the prior art that the top of the valve stem 02 passes through the box cover 31 and is located outside the box body 03, this arrangement makes the box body 03 have better sealing and integrity.

[0061] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As can be seen from the figure, the valve core 61 is rotatably installed in the valve core cavity. A straight-shaped strip boss 22 is provided at one end of the valve stem 02. The strip boss 22 extends into the valve core cavity and is combined with the strip groove 611 of the valve core 61 to drive the valve core 61 to rotate.

[0062] In this embodiment of the utility model, a sealing boss 73 is provided on the bottom outer wall of the cartridge seat 32, and the sealing boss 73 extends along the periphery of the through hole; the valve body 06 has a valve core cavity for accommodating the valve core 61, and the sealing boss 73 is clamped on the top opening inner wall of the valve core cavity. In this way, the sealing performance of the plug valve is ensured from the structural design, and the influence of the rotation deviation of the valve stem 02 driven by the motor on the sealing performance of the valve core 61 and the valve body is avoided.

[0063] It can also be seen from the figure that in this embodiment of the utility model, an arc-shaped limiting boss 74 is also included. The limiting boss 74 is arranged on the sealing boss 73. The limiting boss 74 is clamped on the inner wall of the top opening of the valve core cavity, and the sealing boss 73 extends toward the direction of the valve core 61; a rod needle 21 is arranged at the bottom of the valve stem 02, and the rod needle 21 protrudes from the surface of the valve stem 02; the rod needle 21 is configured so that when the valve stem 02 rotates, the rod needle 21 can be abutted against the side wall of the limiting boss 74. Optionally, the limiting boss 74 and the sealing boss 73 are both circular rings with the same inner and outer diameters. Along the orthographic projection direction of the through hole, the part of the sealing boss 73 blocked by the limiting boss 74 forms a fan shape.

[0064] Furthermore, the rod needle 21 can contact the side wall of the limiting boss 74, and the rod needle 21 can rotate along the periphery of the sealing boss 73, and its angle is the rotation angle of the valve stem 02. The limiting boss 74 cooperates with the sealing boss 73, and its function is to ensure the sealing of the valve core 61 and the valve body, that is, the plug valve, from the perspective of structural design, and to avoid the influence of the rotation deviation of the valve stem 02 driven by the motor on the sealing of the valve core 61 and the valve body.

[0065] like Figure 4 , Figure 5 , Figure 6 In this embodiment of the utility model, a semicircular hole is provided on the transmission component 04, and a semicircular portion is provided in the middle of the valve stem 02; the semicircular portion is clamped in the semicircular hole, so that the transmission component 04 can drive the valve stem 02 to rotate. The valve stem 02 passes through the box seat 32, and the part in the box body 03 is equipped with the transmission component 04. The transmission component 04 has a semicircular hole at the center position, which is tightly combined with the semicircular portion of the valve stem 02. Its function is: the transmission component 04 can drive the valve stem 02 to rotate, and then drive the valve core 61 to rotate.

[0066] like Figure 1 , Figure 5 and Figure 7 In this embodiment of the utility model, the top inner wall of the box cover 31 is provided with an annular boss 311; the top of the valve stem 02 is rotatably arranged in the annular boss 311. Compared with the arrangement of the prior art in which the top of the valve stem 02 extends out of the box body 03, this arrangement can make the box body 03 as a whole a complete plane. This design ensures that the valve stem 02 as a whole can be sealed in the box body 03 and the valve body 06, improves the space utilization of the solenoid valve, and the overall structure is more compact; at the same time, the annular boss 311 also has the effect of guiding and reducing the swing of the valve stem 02. Figure 1 and Figure 6 The transmission shaft of the transmission assembly 04 facing the valve stem 02 has a preset spacing with the output shaft of the driving member 05; the length of the spacing between the driving member 05 and the valve stem 02 is less than the length of the preset spacing. In this way, interference between the driving member 05 and the valve stem 02 during the transmission cooperation process can be avoided.

[0067] In this embodiment of the utility model, the transmission assembly 04 includes a main transmission member 41, a secondary transmission member 42, and a transmitted member 43; the main transmission member 41, the secondary transmission member 42, and the transmitted member 43 are all gear structures; the output shaft of the driving member 05 is connected to the main transmission member 41; the output end of the main transmission member 41 is meshed with the input end of the secondary transmission member 42, and the output end of the secondary transmission member 42 is meshed with the input end of the transmitted member 43; the valve stem 02 is arranged on the transmitted member 43; the magnet member 431 is installed on the transmitted member 43.

[0068] Optionally, the main transmission member 41 and the driven member 43 are both single gears. The secondary transmission member 42 includes two secondary transmission gear units, each of which includes two concentrically arranged gears. The valve stem 02 and the magnet member 431 are both arranged on the driven member 43. The main transmission member 41 is sleeved on the rotating shaft of the motor.

[0069] Specifically, as shown in the figure, the motor is installed and fixed at the bottom of the box body 03, and a transmission shaft is provided to extend into the box body 03, and the main transmission member 41 is fastened with the set. When the motor is turned on and rotated, the main transmission member 41 is driven to rotate synchronously, and the transmission is transferred through two secondary transmission gear units to drive the driven member 43 to rotate, drive the valve stem 02 to rotate, and then drive the valve core 61 to rotate. The valve core 61 is provided with different gear outlet holes 612, thereby realizing automatic control of the gas quantity gear adjustment.

[0070] In this embodiment of the utility model, the main transmission member 41, the secondary transmission member 42, and the driven member 43 are arranged in sequence along the length direction of the valve body 06, and the valve stem 02 is spaced from the driving member 05. This has the effect of transmission avoidance, so as to avoid interference between the motor and the valve stem 02 during the transmission cooperation process.

[0071] Second, see Figure 8 and Fig. 9 The utility model provides an intelligent gas stove, which includes a control panel 200, a key panel 700 and an electric control valve of any one of the aforementioned embodiments; the key panel 700 is electrically connected to a circuit board 01 of the electric control valve through the control panel 200; the key panel 700 is configured to send a command signal to the control panel 200, and enable the circuit board 01 to control the motor to drive the rotating component, the valve stem 02, and the valve core 61 to first return to the zero position, and then rotate to the gear position that needs to be adjusted.

[0072] Furthermore, the intelligent gas stove also includes a burner 300 , an ignition device 400 , a thermocouple 500 , a gas pipeline 600 , and a burner head 800 .

[0073] The burner head 800 is installed in the cavity of the stove chassis, and the burner head 800 is installed with a burner 300. The burner 300 is divided into an outer ring main fire and an inner ring small fire. A thermocouple 500 for detecting flames and an ignition device 400 are installed between the inner ring small fire and the outer ring main fire. The gas valve 100 is connected to the ejector pipe set in the burner head 800 through the gas pipeline 600 to control the supply of gas to the burner 300 to achieve combustion.

[0074] Cooker working process Fig. 9 As shown:

[0075] The operation module issues instructions;

[0076] The "zero position switch detection module" sends a zero position signal to the control module, that is, a signal in the first state of a zero potential signal is sent to the control module.

[0077] After receiving the signal from the "operating module issuing instructions" and the signal from the "zero position switch detection module", the control module operates the "solenoid valve to punch, the drive motor to punch the plug valve" to supply gas to the gas burner; on the other hand, it operates the "ignition module to discharge and ignite" to enable the burner to ignite and burn;

[0078] After the thermocouple detects the ignition successfully, the control module receives the signals from the "zero switch detection module" and the "thermocouple detects the ignition successfully", and the gear adjustment can be achieved by "touch the keypad gear adjustment key".

[0079] The specific operating steps of the method of use are as follows: touch the power button 702 on the keypad 700, the power button 702 is turned on, and then touch the ignition start button 703 set on the keypad 700, the control board 200 drives the motor to rotate, drives the valve stem 02 to rotate through the transmission component 04, and the valve stem 02 drives the valve core 61 to rotate, and is in the maximum gear working state (ignition default state), and at the same time, the control board 200 drives the self-priming valve 62 to open and the ignition module to turn on, the ignition device 400 discharges and ignites the burner 300, the thermocouple 500 detects and confirms that the ignition is successful, and the burner 300 is in the maximum combustion working state; if the firepower needs to be adjusted, touch the gear adjustment button 701 on the keypad 700, the motor receives the command signal from the control board 200 and drives the transmission component 04, the valve stem 02, and the valve core 61 to return to the zero position first, and then rotate to the gear that needs to be adjusted, which has the advantage of precise gear control.

[0080] During use:

[0081] 1) If the flameout occurs unexpectedly or midway, the control board 200 drives the motor to rotate, and the transmission component 04 with the valve stem 02 and the valve core 61 rotates and resets to realize the function of closing the plug valve, solving the problem that the ordinary mechanical valve only closes the electric control valve but cannot close the plug valve when the flameout occurs accidentally.

[0082] 2) Steps for restarting after power failure: Touch the power button 702 on the keypad 700, the power button 702 turns on, the control panel 200 drives the motor belt transmission component 04 to first reset, and then transmit to the maximum gear position to avoid gear adjustment disorder.

[0083] In summary, the embodiments of the present invention provide an electric control valve and an intelligent gas stove, which have at least the following advantages:

[0084] The electric control valve has a compact structure design and is easy to install;

[0085] The gear angle control is adjusted using a magnetic switch.

[0086] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An electrically controlled valve, characterized in that: include: A valve body (06), a valve core (61), a valve stem (02), a circuit board (01), a driving member (05), and a transmission assembly (04); the valve stem (02) drives the valve core (61) to be rotatably arranged in the valve body (06); the transmission assembly (04) is connected to the valve stem (02); the driving member (05) is connected to the transmission assembly (04) to drive the transmission assembly (04) to rotate relative to the valve body (06); The circuit board (01) is provided with a magnetic switch, and the transmission component (04) is provided with a magnet (431); the electric control valve has a first state in which the transmission component (04) drives the magnet (431) to approach the magnetic switch when it rotates, so that the magnetic switch is turned on and generates a zero potential signal, and a second state in which the magnet (431) is away from the magnetic switch.

2. The electrically controlled valve according to claim 1, characterized in that: It also includes a box body (03), wherein the box body (03) includes a box seat (32) and a box cover (31); The box seat (32) is a barrel-shaped structure, and the box cover (31) seals the opening at the top of the box seat (32) to form a closed accommodating space; the circuit board (01) and the transmission assembly (04) are both located in the accommodating space; The bottom of the box seat (32) has a through hole, the valve stem (02) passes through the through hole, and the valve stem (02) can seal the through hole.

3. The electrically controlled valve according to claim 2, characterized in that: The top of the valve stem (02) is located in the accommodating space.

4. The electrically controlled valve according to claim 2, characterized in that: A sealing boss (73) is provided on the outer wall of the bottom of the box seat (32), and the sealing boss (73) extends along the periphery of the through hole; The valve body (06) has a valve core cavity for accommodating the valve core (61), and the sealing boss (73) is clamped on the inner wall of the top opening of the valve core cavity.

5. The electrically controlled valve according to claim 4, characterized in that: It also includes an arc-shaped limiting boss (74), the limiting boss (74) is arranged on the sealing boss (73), the limiting boss (74) is clamped on the inner wall of the top opening of the valve core cavity, and the sealing boss (73) extends toward the direction of the valve core (61); A rod needle (21) is provided at the bottom of the valve stem (02), and the rod needle (21) protrudes from the surface of the valve stem (02); the rod needle (21) is configured so that when the valve stem (02) rotates, the rod needle (21) can be supported on the side wall of the limiting boss (74).

6. The electrically controlled valve according to claim 3, characterized in that: The top inner wall of the box cover (31) is provided with an annular boss (311); the top of the valve stem (02) is rotatably arranged in the annular boss (311).

7. The electrically controlled valve according to claim 1, characterized in that: The transmission shaft of the transmission assembly (04) facing the valve stem (02) has a preset distance from the output shaft of the driving member (05); the length of the distance between the driving member (05) and the valve stem (02) is less than the length of the preset distance.

8. The electrically controlled valve according to claim 7, characterized in that: The transmission assembly (04) comprises a main transmission member (41), a secondary transmission member (42), and a transmitted member (43); The main transmission member (41), the secondary transmission member (42), and the transmitted member (43) are all gear structures; The output shaft of the driving member (05) is connected to the main transmission member (41); the output end of the main transmission member (41) is meshed with the input end of the secondary transmission member (42), and the output end of the secondary transmission member (42) is meshed with the input end of the driven member (43); the valve stem (02) is arranged on the driven member (43); The magnet component (431) is mounted on the transmitted component (43).

9. The electrically controlled valve according to claim 8, characterized in that: Along the length direction of the valve body (06), the main transmission member (41), the secondary transmission member (42), and the driven member (43) are arranged in sequence; and the valve stem (02) and the driving member (05) are spaced apart.

10. An intelligent gas stove, characterized in that: The intelligent gas stove comprises a control panel (200), a key panel (700) and an electrically controlled valve according to any one of claims 1 to 9; The keypad (700) is electrically connected to the circuit board (01) of the electric control valve via the control board (200); The keypad (700) is configured to send a command signal to the control panel (200), and enable the circuit board (01) to control the motor to drive the rotating assembly, the valve stem (02), and the valve core (61) to first return to the zero position and then rotate to the gear position that needs to be adjusted.

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