Intelligent control system of commercial cooking range

Abstract

The utility model discloses an intelligent control system of a commercial cooking range. The intelligent control system comprises an electric oil-gas valve, an air outlet device and a control system, the electric oil-gas valve comprises a gear motor and a valve, an output shaft of the alternating-current gear motor is coaxially connected with a valve rod of the valve, and the alternating-current gear motor drives the valve rod to rotate. The air outlet end of the air outlet device and the outlet end of the fuel oil or gas valve are connected into the combustion device at the same time. The control system comprises a single-chip microcomputer and a regulation and control unit, the single-chip microcomputer is electrically connected with the regulation and control unit, the single-chip microcomputer is electrically connected with the alternating-current gear motor and the air outlet device, instructions are sent to the single-chip microcomputer by adjusting the regulation and control unit, and the single-chip microcomputer receives the instructions and controls the alternating-current gear motor to rotate forwards or backwards according to a preset angle. Meanwhile, the air volume of the air outlet device is controlled. The system has the advantages that air-gas or air-oil linkage is achieved through the single-chip microcomputer, the system can flexibly and accurately control the valve, the service life is long, the failure rate is low, and the valve can be adjusted at any angle through the electric valve angle adjusting circuit.

Description

TECHNICAL FIELD

[0001] The utility model relates to commercial kitchen range technical field, concretely relates to a commercial range's intelligent control system. BACKGROUND

[0002] At present, the existing technology for the adjustment of the flame of the range, mostly adopts the direct adjustment of the manual mechanical valve, according to the different fuel division, the adjustment valve of liquid fuel generally adopts the needle valve, the adjustment valve of gaseous fuel generally adopts the ball valve, although the two kinds of manual mechanical valves are simple in design, but due to the mechanical valve adjustment, it is not easy to grasp the opening size of the valve, the adjustment precision is low, the ratio of air and fuel (fuel oil or fuel gas) cannot be accurately controlled when adjusting the large, medium and small flames, and it is time-consuming and laborious to adjust the ratio of air and fuel (fuel oil or fuel gas) separately. Chinese patent number: CN 202222738455.6, adopts the mechanical type linkage to adjust the mixing ratio of air and fuel gas, but the adjustment precision is low due to the mechanical type linkage structure, and the setting of the mixing ratio of air and fuel gas is complicated, and after long time use, mechanical wear is caused, and stable operation cannot be guaranteed. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a kind of intelligent control systems of commercial range for the defects existing in prior art. It solves the problem that valve angle is not accurate in manual adjustment, cannot be automatically controlled.

[0004] Its technical scheme is: a kind of intelligent control systems of commercial range, including electric oil-gas valve, air outlet device, control system;The electric oil-gas valve includes speed reducer motor, valve, the output shaft of alternating current speed reducer motor is fixedly connected with the oil-gas valve stem of valve periphery, the alternating current speed reducer motor drives the rotation of the oil-gas valve stem;The air outlet end of air outlet device is simultaneously connected with the outlet end of electric oil-gas valve into combustion device;The control system includes single-chip microcomputer, regulation and control unit, the single-chip microcomputer is electrically connected with the regulation and control unit, the single-chip microcomputer is electrically connected with the alternating current speed reducer motor, air outlet device respectively, by adjusting regulation and control unit sends instruction to single-chip microcomputer, single-chip microcomputer receives instruction, controls the alternating current speed reducer motor according to preset angle forward rotation or reverse rotation, while control the air volume of air outlet device.

[0005] Further optimize on the basis of the above technical scheme, the control system also includes forward rotation relay and reverse rotation relay, the forward rotation relay and reverse rotation relay are electrically connected with the single-chip microcomputer, the regulation and control unit is rotary potentiometer or button switch or rotary encoder or transverse direct sliding potentiometer, when forward rotation or reverse rotation rotary potentiometer, single-chip microcomputer detects the angle corresponding signal of rotary potentiometer, single-chip microcomputer sends control instruction to forward rotation relay or reverse rotation relay, which corresponds the preset power-on duration of forward rotation relay or reverse rotation relay, i.e. change the rotation angle of alternating current speed reducer motor.

[0006] Further optimization based on the above technical solutions, the valve is a ball valve, the ball valve is used for wind gas linkage, the ball valve is fixedly installed on the upper part of the valve seat, the ball valve stem penetrates the valve seat and is installed, the alternating current speed reduction motor is fixedly installed on the lower part of the valve seat, the ball valve stem and the output shaft are coaxially fixedly connected through the connecting device.

[0007] Further optimization based on the above technical solutions, the valve is a needle valve, the needle valve is used for wind oil linkage, the needle valve is fixedly installed on the upper part of the valve seat, the needle valve stem penetrates the valve seat and is installed, the alternating current speed reduction motor is fixedly installed on the lower part of the valve seat, the output shaft and the connecting device are fixedly connected, the needle valve stem and the connecting device are circumferentially fixedly connected, and the needle valve stem can move up and down along the axial direction of the connecting device.

[0008] Further optimization based on the above technical solutions, the connecting device is a shaft coupling, the output shaft and the shaft coupling are fixedly connected through a fixing screw, a permanent magnet is fixedly arranged outside the shaft coupling, a Hall sensor is prearranged on the valve seat, the Hall sensor is used for detecting the position of the permanent magnet, the Hall sensor is electrically connected with the single-chip microcomputer, when the single-chip microcomputer is powered off and then powered on again, if the single-chip microcomputer cannot detect the feedback signal of the Hall sensor, the single-chip microcomputer controls the relay to drive the alternating current speed reduction motor to rotate in a preset direction until the permanent magnet is detected, and when the single-chip microcomputer sends a new instruction again, the relay drives the alternating current speed reduction motor to rotate to a corresponding angle according to the instruction, and when the valve is completely closed, the permanent magnet is close to and faces the Hall sensor.

[0009] Further optimization based on the above technical solutions, the air outlet device comprises an alternating current fan and an electric air valve, an air inlet of the electric air valve is connected with an air outlet end of the alternating current fan, the electric air valve comprises an alternating current speed reduction motor and an air valve, an output shaft of the alternating current speed reduction motor controls the angle of the air valve to realize accurate control of the air outlet amount, the alternating current speed reduction motor is electrically connected with a forward rotation relay and a reverse rotation relay of the air valve, the forward rotation relay and the reverse rotation relay of the air valve are electrically connected with the single-chip microcomputer, a rotation angle of a rotary potentiometer corresponds to a preset power-on time length of the forward rotation relay and the reverse rotation relay, and the forward rotation relay or the reverse rotation relay is driven to be powered on by rotating the rotary potentiometer, so that the alternating current speed reduction motor is forward rotated or reverse rotated.

[0010] On the basis of the above technical scheme, the air valve further comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the inner cylinder, the inner cylinder is rotatable in the outer cylinder, air outlets are respectively arranged on the inner cylinder and the outer cylinder, a valve rod is fixedly installed outside the inner cylinder, an output shaft of the AC speed reducer motor is fixedly connected with the valve rod, the AC speed reducer motor drives the inner cylinder to rotate to change the opening degree of the air outlet, the outer cylinder is fixedly installed on the upper portion of a valve seat, the valve rod penetrates through the valve seat, and the AC speed reducer motor is fixedly installed on the lower portion of the valve seat.

[0011] On the basis of the above technical scheme, the air outlet device further comprises a DC fan, the DC fan is electrically connected with the single-chip microcomputer, the angle of rotation of the rotary potentiometer corresponds to the voltage value output by the single-chip microcomputer, and different voltage values are output to change the rotating speed of the DC fan.

[0012] On the basis of the above technical scheme, the regulating unit further comprises an adjusting device, the adjusting device comprises a handle and a housing, a fixed shaft is arranged on the housing, the handle is connected with a rotating shaft, the rotating shaft is installed on the fixed shaft, the rotating shaft is connected with a rotating rod of the rotary potentiometer, the rotary potentiometer is fixed on the housing through a fixed nut, the rotating rod penetrates through the housing and is installed, a magnetic gasket concentric with the rotating rod is fixed on the rotating shaft, the magnetic gasket is adsorbed on the fixed nut, a protruding limiting block is arranged on the housing, the limiting block surrounds the fixed shaft, a limiting plate is arranged on the inner side of the rotating shaft, and the limiting plate is rotatable within the circumferential range of the limiting block.

[0013] On the basis of the above technical scheme, the regulating unit further comprises a wind pressure detection sensor, the wind pressure detection sensor is installed at one end of the air outlet device, the wind pressure signal value detected by the wind pressure detection sensor is fed back to the single-chip microcomputer, and the single-chip microcomputer judges whether the fan normally works according to the wind pressure signal value preset by a user.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The valve is directly connected with an alternating current permanent magnet synchronous reduction motor through a shaft coupling, the motor is connected with a single-chip microcomputer through a relay, the single-chip microcomputer is electrically connected with a rotary potentiometer (a rotary encoder, a transverse straight sliding potentiometer) or a related key, and the size of the opening required by each gear position can be pre-set, when power is off and then power is on again, the single-chip microcomputer controls the relay to be powered on until the permanent magnet rotates to the position of the Hall sensor, the Hall sensor detects the signal of the permanent magnet, and the synchronous motor stops rotating, at this time, the set valve closing position is set; when a ball valve or a damper is used, the output shaft of the motor is directly fixed with the valve through the shaft coupling because the axial position of the valve rod is fixed; when a needle valve is used, the axial position of the valve rod and the shaft coupling can be moved up and down because the rotation of the needle valve will cause the axial position of the valve rod to move up and down, and the output shaft of the motor is fixedly connected with the shaft coupling because the axial position of the valve rod and the shaft coupling is circumferentially fixed. The device is flexible in control, high in valve adjusting precision, and capable of automatically closing the valve after power-on, and the safety and accurate control effect is achieved; the system adopts the alternating current permanent magnet synchronous reduction motor, and the cost is greatly saved compared with a stepping motor and a servo motor. The air or oil linkage is realized through the single-chip microcomputer, the air inlet amount and the oil or gas inlet amount can be adjusted at the same time when the handle is rotated, the air inlet amount and the oil or gas inlet amount can be set through single-chip microcomputer programming, the speed of the fan can be directly controlled by the single-chip microcomputer when a direct current fan is used, the opening of the electric air valve can be directly controlled by the single-chip microcomputer when an alternating current fan is used, and the adjustment mode of the electric air valve is same as that of the electric ball valve (air linkage) or the electric needle valve (oil linkage). The system can flexibly control the valve, a plurality of linkage functions can be realized through user programming, the service life is long, the failure rate is low, the electric valve angle adjustment circuit realizes the adjustment setting of any angle required by the user, and the intelligent control effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the front view of the electric needle valve of the utility model;

[0017] Figure 2 is the A-A section view of the utility model Figure 1 ;

[0018] Figure 3 is the perspective view of the electric needle valve of the utility model;

[0019] Figure 4 is the perspective view of the electric ball valve of the utility model;

[0020] Figure 5 is the perspective view of the electric ball valve of the utility model;

[0021] Figure 6 is the front view of the electric air valve of the utility model;

[0022] Figure 7 is the A-A section view of the utility model Figure 6B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0023] Figure 8 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0024] Figure 9 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0025] Figure 10 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0026] Figure 11 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0027] Figure 12 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0028] Figure 13 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0029] Figure 14 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0030] Figure 15 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0031] Figure 16 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure;

[0032] Figure 17 B-B cross-sectional view of the electric ball valve (gas valve) or electric needle valve (fuel valve) of the utility model is shown in the figure.

[0033] Wherein, 101, needle valve, 102, ball valve, 103, air valve, 1031, inner cylinder, 1032, outer cylinder, 1033, air valve rod, 1034, air outlet, 1035, air inlet, 2, valve seat, 3, AC speed reducer motor, 4, oil and gas valve rod, 5, output shaft, 6, shaft coupling, 7, permanent magnet, 8, hall sensor, 9, fixed screw, 111, handle, 112, rotating shaft, 113, shell, 114, fixed shaft, 115, limit block, 116, rotating rod, 117, limit plate, 118, fixed nut, 119, magnetic gasket. DETAILED DESCRIPTION

[0034] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.

[0035] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0036] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0037] Referring to Figures 1-10 A smart control system of a commercial stove, comprising an electric oil and gas valve, an air outlet device and a control system. The electric oil and gas valve comprises an AC speed reducer motor 3 and a valve, the output shaft 5 of the AC speed reducer motor is fixedly connected with the oil and gas valve rod 4 of the valve in the circumferential direction, and the AC speed reducer motor 3 drives the oil and gas valve rod 4 to rotate. The output port of the air outlet device and the output port of the electric oil and gas valve are connected with a combustion device at the same time. The control system comprises a single-chip microcomputer and a control unit, the single-chip microcomputer is electrically connected with the control unit, the single-chip microcomputer is electrically connected with the AC speed reducer motor 3 and the air outlet device, the control unit sends instructions to the single-chip microcomputer, the single-chip microcomputer receives the instructions, controls the AC speed reducer motor 3 to rotate forward or reverse at a preset angle, and controls the air volume of the air outlet device at the same time. The control system further comprises a forward rotation relay and a reverse rotation relay, the forward rotation relay and the reverse rotation relay are electrically connected with the single-chip microcomputer, the control unit is a rotary potentiometer, a button switch, a rotary encoder or a horizontal straight sliding potentiometer. If the rotary potentiometer is used, when the rotary potentiometer rotates forward or reversely, the single-chip microcomputer detects the signal corresponding to the angle of the rotary potentiometer, and the single-chip microcomputer sends control instructions to the forward rotation relay or the reverse rotation relay, which corresponds to the preset power-on time of the forward rotation relay or the reverse rotation relay, that is, the rotation angle of the AC speed reducer motor is changed.

[0038] When air and gas are linked, the valve adopts ball valve 102, which is fixedly installed on the upper part of valve seat 2, and oil gas valve rod 4 penetrates valve seat 2 and is installed, and alternating current speed reducer 3 is fixedly installed on the lower part of valve seat 2, and oil gas valve rod 4 is coaxially fixedly connected with output shaft 5 through connecting device.

[0039] When air and gas are linked, the valve adopts ball valve 102, which is fixedly installed on the upper part of valve seat 2, and oil gas valve rod 4 penetrates valve seat 2 and is installed, and alternating current speed reducer 3 is fixedly installed on the lower part of valve seat 2, and oil gas valve rod 4 is coaxially fixedly connected with output shaft 5 through connecting device.

[0040] Connecting device can adopt shaft coupling 6, output shaft 5 is fixedly connected with shaft coupling 6 through fixing screw 9, permanent magnet 7 is fixedly arranged outside shaft coupling 6, and Hall sensor 8 is pre-arranged on valve seat 2, Hall sensor 8 is used for detecting the position of permanent magnet 7, Hall sensor 8 is electrically connected with single-chip microcomputer, when single-chip microcomputer is powered off and then powered on, if single-chip microcomputer cannot detect the feedback signal of Hall sensor 8, single-chip microcomputer controls relay to drive alternating current speed reducer 3 to rotate in a preset direction until permanent magnet 7 is detected, and then rotation is stopped, when single-chip microcomputer sends new instructions again, relay drives alternating current speed reducer 3 to rotate to a corresponding angle according to the instructions, when the valve is completely closed, permanent magnet 7 is close to and opposite to Hall sensor 8.

[0041] As Figure 9, when the AC fan is used, the air outlet device needs to be provided with an electric air valve, the air inlet of the electric air valve 1035 is connected with the air outlet end of the AC fan, the electric air valve includes an AC speed reducer motor 3 and an air valve 103, the output shaft 5 of the AC speed reducer motor 3 controls the air outlet size, the AC speed reducer motor 3 is electrically connected with a forward rotation air valve relay and a reverse rotation air valve relay, the forward rotation air valve relay and the reverse rotation air valve relay are electrically connected with the single-chip microcomputer, the rotation angle of the rotary potentiometer corresponds to the preset power-on time of the forward rotation air valve relay and the reverse rotation air valve relay, the rotary potentiometer is rotated to drive the forward rotation air valve relay or the reverse rotation air valve relay to be powered on, so that the AC speed reducer motor 3 is rotated forward or reversely. The air valve 103 includes an inner cylinder 1031 and an outer cylinder 1032, the outer cylinder 1032 is sleeved outside the inner cylinder 1031, the inner cylinder 1031 can rotate in the outer cylinder 1032, the inner cylinder 1031 and the outer cylinder 1032 are respectively provided with an air outlet 1034, the outer cylinder 1031 is fixedly installed with an air valve rod 1033, the output shaft 5 of the AC speed reducer motor 3 is fixedly connected with the air valve rod 1033, the AC speed reducer motor 3 drives the inner cylinder 1031 to rotate to change the opening degree of the air outlet 1034, the outer cylinder 1032 is fixedly installed on the upper portion of the valve seat 2, the air valve rod 1033 penetrates through the valve seat 2 and is installed, and the AC speed reducer motor 3 is fixedly installed on the lower portion of the valve seat 2.

[0042] As Figure 10 , when the DC fan is used, the DC fan is electrically connected with the single-chip microcomputer, the size of the PWM signal output by the single-chip microcomputer (0V~5V) directly controls the rotating speed of the DC fan to adjust the air intake, the air outlet device can select the DC fan, the DC fan is electrically connected with the single-chip microcomputer, the rotation angle of the rotary potentiometer corresponds to the voltage value output by the single-chip microcomputer, and different voltage values can change the rotating speed of the DC fan.

[0043] As Figures 15-17The regulating unit is provided with an adjusting device, the adjusting device comprises a handle 111 and a shell 113, the shell 113 is provided with a fixed shaft 114, the handle 111 is connected with a rotating shaft 112, the rotating shaft 112 is installed on the fixed shaft 114, the rotating shaft 112 is connected with a rotating rod 116 of a rotary potentiometer, the rotary potentiometer is fixed on the shell 113 through a fixed nut 118, the rotating rod 116 penetrates through the shell 113 and is installed, the rotating shaft 112 is fixedly provided with a magnetic gasket 119 which is concentric with the rotating rod 116, the magnetic gasket 119 is adsorbed on the fixed nut 118, the shell 113 is provided with a protruding limiting block 115, the limiting block 115 is arranged around the fixed shaft 114, the inner side of the rotating shaft 112 is provided with a limiting plate 117, and the limiting plate 117 can rotate within the circumferential range of the limiting block 115. The adjusting device is used for conveniently rotating the rotary potentiometer, the magnetic gasket 119 on the rotating shaft 112 is adsorbed on the fixed nut 118 to increase resistance, the probability of accidental touch is reduced, the limiting device is increased, and the rotary potentiometer can be rotated and adjusted within a certain range.

[0044] The regulating unit can be provided with a wind pressure detection sensor, the wind pressure detection sensor is installed at one end of the air outlet device (the air outlet end of the direct-current fan and the air outlet end of the electric air valve), the wind pressure signal value detected by the wind pressure detection sensor is fed back to the single-chip microcomputer, the single-chip microcomputer judges whether the fan works normally according to the wind pressure signal value preset by the user, when the wind pressure detection sensor feeds back the wind pressure signal to the single-chip microcomputer, and the actual wind pressure value is inconsistent with the preset wind pressure value, the controller is closed to all outputs, that is, the burner is closed to the gas source and stops working.

[0045] The single-chip microcomputer model used above is STC8H3K64S2, which does not require external crystal oscillator and external reset single-chip microcomputer. The STC8H series single-chip microcomputer is a single clock / machine cycle (1T) single-chip microcomputer produced by STC, which is a new generation of 8051 single-chip microcomputer with wide voltage, high speed, high reliability, low power consumption, anti-static, and strong anti-interference. The MCU integrates a high-precision R / C clock, and the ISP programming can be set in a wide range of 4MHz~35MHz, which can completely eliminate the need for external crystal oscillator and external reset circuit (the internal high-reliability reset circuit is integrated, and the 4-level reset threshold voltage can be selected during ISP programming). The MCU has three optional clock sources: internal high-precision IRC clock (which can be appropriately adjusted up or down), internal 32KHz low-speed IRC, and external 4M~33M crystal oscillator or external clock signal. The user code can freely select the clock source, and after the clock source is selected, the clock signal can be provided to the CPU and various peripherals (such as timers, serial ports, SPI, etc.) after being divided by an 8-bit frequency divider. The power-down mode can use comparator interrupts, low voltage detection interrupts, power-down wake-up, and timer wake-up. The MCU provides rich digital peripherals (serial ports, timers, advanced PWM, IC, SPI, USB) interfaces and analog peripherals (ultra-high-speed ADC, comparator), and the above functions of the single-chip microcomputer ensure the stable operation of the valve power-down zero circuit and the valve angle adjustment circuit.

[0046] As Figure 9 , 10 , 11 zero detection circuit and principle:

[0047] In order to solve the problem that the opening angle of the oil and gas valve cannot be determined after sudden power failure and power recovery in the control system, the control system adds a zero point detection circuit for electric valve, which utilizes the principle of magnet conduction of Hall sensor 8. A Hall sensor 8 is installed on the valve seat 2 of the ball valve 102 or needle valve 101, and a permanent magnet 7 is installed on the shaft of the coupling 6. When the power is suddenly cut off and then restored, if the ball valve 102 or needle valve 101 is not in the closed state, the single-chip microcomputer cannot detect the feedback signal of the Hall sensor 8, and the relay for closing the valve works. When the feedback signal of the Hall sensor 8 is detected, the relay output is stopped, and the valve returns to the closed state.

[0048] As Figures 12-14 , valve angle adjustment circuit and principle:

[0049] In order to solve the problem of manual adjustment of oil and gas valves, the angle of the valve is not accurate, and it cannot be automatically controlled accurately. The control system increases the automatic control function of the valve. The user can set the angle of the valve to realize the precise linkage of the wind and oil required by the large, medium and small flames of the commercial stove. When the user rotates the handle 111, the handle 111 drives the rotary potentiometer to rotate. The single-chip microcomputer detects the voltage feedback of the rotary potentiometer, judges the current position of the handle 111, and calculates the control time of the left and right turning relays of the valve according to the size of the valve opening and closing value set by the user and the change of the current gear position. The size of the PWM signal output (0V~5V) is used to accurately control the angle adjustment of the valve. At the same time of adjusting the angle, the wind valve relay is attracted, and the fan is powered.

[0050] The setting of the rotary potentiometer corresponding to the rotating angle of the motor:

[0051] The permanent magnet synchronous AC speed reducer motor is used in the AC speed reducer motor. The programming needs to be calculated according to the speed ratio of the AC speed reducer motor 3 and the rotating angle of the valve from opening to closing. If the rotating angle of the rotary potentiometer is set to 0-90 degrees (a scale can be set on the shell panel), 90° corresponds to the single-chip microcomputer program setting output 100% signal size. When the total effective stroke of the needle valve 101 from complete closing to complete opening is set to 2 rotations (i.e. 720°), the minimum preset value is 0°, which corresponds to the single-chip microcomputer output signal 0% (i.e. the valve is completely closed); the maximum preset value is 720°, which corresponds to the single-chip microcomputer output signal 100% (i.e. the valve is completely opened). When the valve does not need to be completely opened or completely closed, the size of the valve opening corresponding to the size of the single-chip microcomputer output signal can be arbitrarily preset in the single-chip microcomputer programming according to the need, that is, the power-on time of the relay controlled by the internal clock set by the single-chip microcomputer. According to the rotating speed of the AC speed reducer motor 3 per minute, the power-on time of the motor per 1° rotation of the rotary potentiometer can be calculated. For example, the speed reducer motor is 30 rotations per minute, and the needle valve 101 (total stroke 2 rotations) in the above example is powered on for 4 seconds from completely open (720°) to completely close (0°), and multiple gears corresponding to the angle can be set in the middle. For the ball valve 102 and the air valve 103, the total stroke is calculated as 1 / 4 turn (i.e. 90°). The single-chip microcomputer output signal 0% corresponds to the valve opening 0°; the single-chip microcomputer output signal 100% corresponds to the valve opening 90°. Multiple other gears can be set according to the need, and the size of the valve opening corresponding to the size of the single-chip microcomputer output signal can be arbitrarily preset.

[0052] The rotation angle and direction of the rotary potentiometer of the fuel or gas valve correspond to the energization time length of the left and right rotation relays set by the user, i.e. the rotation direction and angle of the AC speed reduction motor 3. When the air is supplied by the AC fan, the opening of the air valve is adjusted at the same time, and the working principle is the same as that of the electric oil or gas valve; when the air is supplied by the DC fan, the rotation angle also corresponds to an output voltage value of the single-chip microcomputer interface, i.e. the size of the adjustment voltage changes the rotation speed of the fan, thereby changing the air supply.

[0053] The consumption ratio can be set according to the type of fuel or gas, i.e. the energization time length (rotation angle) of the electric fuel or gas valve corresponding to the rotation angle of the rotary potentiometer and the air supply amount of the air outlet device. According to the site requirements, when the air outlet device uses an AC fan, an electric air valve is needed to adjust the air inlet amount, and it is controlled at the same time as the electric ball valve (gas stove) or electric oil valve (fuel stove); if the air outlet device uses a DC fan, the rotation speed of the DC fan can be directly controlled to adjust the air inlet amount, and it is controlled at the same time as the electric ball valve (gas stove) or electric oil valve (fuel stove).

[0054] The unmentioned structures and connection relationships are well known.

[0055] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A smart control system for a commercial stove, characterized in that: It comprises an electric oil-gas valve, an air outlet device and a control system. The electric oil-gas valve comprises a reduction motor and a valve, and the output shaft of the AC reduction motor is fixedly connected with the oil-gas valve rod of the valve in a circumferential direction. The air outlet end of the air outlet device is connected with the outlet end of the electric oil-gas valve. The control system comprises a single-chip microcomputer and a regulating unit, the single-chip microcomputer is electrically connected with the regulating unit, the single-chip microcomputer is electrically connected with the AC reduction motor and the air outlet device, the single-chip microcomputer receives the instruction from the regulating unit, and the single-chip microcomputer controls the AC reduction motor to rotate in a preset direction and controls the air volume of the air outlet device.

2. The intelligent control system of a commercial range according to claim 1, characterized in that: The control system further comprises a forward rotation relay and a reverse rotation relay, the forward rotation relay and the reverse rotation relay are electrically connected with the single-chip microcomputer, the regulating unit is a rotary potentiometer, a button switch, a rotary encoder or a horizontal straight sliding potentiometer, when the rotary potentiometer rotates, the single-chip microcomputer detects the signal corresponding to the angle of the rotary potentiometer, the single-chip microcomputer sends a control instruction to the forward rotation relay or the reverse rotation relay, and the forward rotation relay or the reverse rotation relay is preset to be powered on for a certain time, so that the rotating angle of the AC reduction motor is changed.

3. The intelligent control system of a commercial range according to claim 2, characterized in that: The valve is a ball valve, the ball valve is used for air-gas linkage, the ball valve is fixedly installed on the upper portion of a valve seat, the ball valve rod penetrates through the valve seat and is installed, the AC reduction motor is fixedly installed on the lower portion of the valve seat, and the ball valve rod is coaxially fixedly connected with the output shaft through a connecting device.

4. The intelligent control system of a commercial range according to claim 2, characterized in that: The valve is a needle valve, the needle valve is used for air-oil linkage, the needle valve is fixedly installed on the upper portion of a valve seat, the needle valve rod penetrates through the valve seat and is installed, the AC reduction motor is fixedly installed on the lower portion of the valve seat, the output shaft is fixedly connected with the connecting device, the needle valve rod is fixedly connected with the connecting device in a circumferential direction, and the needle valve rod can move up and down along the axial direction of the connecting device.

5. The intelligent control system of a commercial range according to claim 3 or 4, characterized in that: The connecting device is a shaft coupling, the output shaft is fixedly connected with the shaft coupling through a fixed screw, a permanent magnet is fixedly arranged outside the shaft coupling, a Hall sensor is arranged on the valve seat, the Hall sensor is used for detecting the position of the permanent magnet, the Hall sensor is electrically connected with the single-chip microcomputer, when the single-chip microcomputer is powered off and then powered on again, if the single-chip microcomputer cannot detect the feedback signal of the Hall sensor, the single-chip microcomputer controls the relay to drive the AC reduction motor to rotate in a preset direction until the permanent magnet is detected, and when the single-chip microcomputer sends a new instruction again, the relay drives the AC reduction motor to rotate to a corresponding angle according to the instruction, and when the valve is completely closed, the permanent magnet is close to and faces the Hall sensor.

6. The intelligent control system of a commercial range according to claim 3 or 4, characterized in that: The air outlet device comprises an alternating current fan, an electric air valve, an air inlet of the electric air valve is connected with an air outlet end of the alternating current fan, the electric air valve comprises an alternating current speed reducer and an air valve, an output shaft of the alternating current speed reducer controls an angle of the air valve to realize accurate control of an air outlet amount, the alternating current speed reducer is electrically connected with a forward rotation relay and a reverse rotation relay of the air valve, the forward rotation relay and the reverse rotation relay are electrically connected with the single-chip microcomputer, a rotation angle of a rotary potentiometer corresponds to a preset power-on time length of the forward rotation relay and the reverse rotation relay of the air valve, the forward rotation relay or the reverse rotation relay of the air valve is driven by forward rotation or reverse rotation of the rotary potentiometer to be powered on, so that the alternating current speed reducer is forward rotated or reverse rotated.

7. The intelligent control system of a commercial range according to claim 6, characterized in that: The air valve comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved outside the inner cylinder, the inner cylinder can rotate in the outer cylinder, air inlets are formed in the inner cylinder and the outer cylinder respectively, a valve rod is fixedly installed outside the inner cylinder, an output shaft of the alternating current speed reducer is fixedly connected with the valve rod, the alternating current speed reducer drives the inner cylinder to rotate to change the opening degree of the air inlet, the outer cylinder is fixedly installed on an upper portion of a valve seat, the valve rod penetrates the valve seat to be installed, and the alternating current speed reducer is fixedly installed on a lower portion of the valve seat.

8. The intelligent control system of a commercial range according to claim 3 or 4, characterized in that: The air outlet device comprises a direct current fan, the direct current fan is electrically connected with the single-chip microcomputer, a rotation angle of a rotary potentiometer corresponds to a voltage value output by the single-chip microcomputer, and different voltage values are output to change the rotating speed of the direct current fan.

9. The intelligent control system of a commercial range according to claim 2, characterized in that: The regulating unit further comprises an adjusting device, the adjusting device comprises a handle and a shell, a fixed shaft is arranged on the shell, the handle is connected with a rotating shaft, the rotating shaft is installed on the fixed shaft, the rotating shaft is connected with a rotating rod of a rotary potentiometer, the rotary potentiometer is fixed on the shell through a fixed nut, the rotating rod penetrates the shell to be installed, a magnetic gasket concentric with the rotating rod is fixed on the rotating shaft, the magnetic gasket is adsorbed on the fixed nut, a protruding limiting block is arranged on the shell, the limiting block is arranged around the fixed shaft, a limiting plate is arranged on the inner side of the rotating shaft, and the limiting plate can rotate within the circumferential range of the limiting block.

10. The intelligent control system of a commercial range according to claim 1, characterized in that: The regulating unit further comprises an air pressure detection sensor, the air pressure detection sensor is installed at one end of the air outlet device, and the air pressure detection sensor feeds back a detected air pressure signal value to the single-chip microcomputer, and the single-chip microcomputer judges whether the fan works normally according to a user preset air pressure signal value.

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