CN209512140U - A kind of stepless speed regulation kitchen ventilator and its control circuit - Google Patents

Abstract

The utility model discloses a kind of stepless speed regulation kitchen ventilator and its control circuits, the stepless speed regulation kitchen ventilator control circuit includes control module, oil smoke detection module, drive module, gear selection module and motor, automatic running pattern is set by the present mode of operation of stepless speed regulation kitchen ventilator by the gear selection module, by the oil smoke detection module real-time detection oil smoke concentration information, and the oil smoke concentration information is converted into electric signal and is exported to control module, speed regulating control signal is exported to drive module after carrying out analog-to-digital conversion to the electric signal by the control module, according to the driving DC voltage of drive module described in the speed regulating control Signal Regulation, by the drive module according to the driving DC voltage driving motor with corresponding rotational speed preset voltage value, and then realize the automatic tune of stepless speed regulation kitchen ventilator revolving speed Function is saved, and then improves practicability and the safety of kitchen ventilator.

Description

A kind of stepless speed regulation kitchen ventilator and its control circuit

Technical field

The utility model relates to electronic circuit technology field, in particular to a kind of stepless speed regulation kitchen ventilator and its control electricity Road.

Background technique

Smoke exhaust ventilator currently on the market mainly manually adjusts the wind speed that fume exhauster flabellum generates, thus Change draft of the smoke exhaust ventilator to oil smoke.Also, wind speed cannot be switched in time when two hands of user are all occupied, simultaneously User is only to carry out limited adjusting according to subjective impression, and when oil smoke concentration is larger, used fixed wind speed may Oil smoke can not be cleaned；And wind speed is fixed used in oil smoke concentration hour and is possible to excessive and causes power wastage.For Reaching best oil extraction effect and energy saving purpose, the person of often requiring to use repeatedly adjusts intervention, and it is time-consuming and laborious, still it cannot reach " real-time " energy conservation.In addition, smoke exhaust ventilator button is frequently touched when cooking, it is also totally unfavorable to dietetic hygiene.

Thus the prior art could be improved and improve.

Utility model content

Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of stepless speed regulation kitchen ventilators And its control circuit, by adding automatic running pattern, so that kitchen ventilator can automatically adjust turning for motor according to the concentration of oil smoke Speed, and realize auto-alarm function, and then improve practicability and the safety of kitchen ventilator.

In order to achieve the above object, the utility model takes following technical scheme:

A kind of stepless speed regulation kitchen ventilator control circuit, including control module, oil smoke detection module, drive module, alarm mould Block, gear selection module and motor are set the present mode of operation of stepless speed regulation kitchen ventilator to by the gear selection module Automatic running pattern is converted by the oil smoke detection module real-time detection oil smoke concentration information, and by the oil smoke concentration information It exports for electric signal to control module, output speed regulating control is believed after the electric signal is carried out analog-to-digital conversion by the control module Number to drive module, according to the driving DC voltage of drive module described in the speed regulating control Signal Regulation, by the driving mould Root tuber is according to the driving DC voltage driving motor with corresponding rotational speed preset voltage value.

The stepless speed regulation kitchen ventilator control circuit further includes alarm module, when the electric signal is greater than predeterminated voltage When value, predetermined level signal is exported to alarm module by the control module, controls the alarm module output warning message.

The stepless speed regulation kitchen ventilator control circuit, further includes temperature detecting module, the temperature detecting module and control The connection of molding block detects current environmental temperature by the temperature detecting module, and exports current environmental temperature information to controlling mould Block.

The stepless speed regulation kitchen ventilator control circuit, further includes display module, and the display module and control module connect It connects, the current environmental temperature information is exported to display module by the control module, is shown currently by the display module Environmental information.

The stepless speed regulation kitchen ventilator control circuit, further includes gear indicating module, the gear indicating module and control The connection of molding block exports corresponding instruction according to the present mode of operation of stepless speed regulation kitchen ventilator by the gear indicating module and believes Breath.

In the stepless speed regulation kitchen ventilator control circuit, the control module include control chip, first switch key, First capacitor, the second capacitor, third capacitor, first resistor and oscillator, one end of the first switch key, first capacitor One end and one end of first resistor are all connected with the 9th foot of control chip, the other end of the first switch and first capacitor it is another One end is all connected with VCC signal end, the first resistor other end ground connection；One end of second capacitor and one end of oscillator are equal 18th foot of connection control chip, one end of the third capacitor and the other end of oscillator are all connected with the 19th of control chip Foot, the other end of second capacitor and the other end of third capacitor are grounded.

In the stepless speed regulation kitchen ventilator control circuit, the drive module includes driving chip, the 4th capacitor and electricity Source interface, one end of the 4th capacitor connect the 6th foot and DC 9-36V signal of the 1st foot of power interface, driving chip End, the other end of the 4th capacitor connect the 3rd foot and ground terminal of the 2nd foot of power interface, power interface, the driving core One end of the 8th foot connection motor of piece, the 9th foot of the other end connection driving chip of the motor.

In the stepless speed regulation kitchen ventilator control circuit, the alarm module includes second resistance, triode and buzzing Device, for the base stage of the triode by second resistance link control module, the collector of the triode connects the 1st of buzzer the Foot, the emitter of the triode connect VCC signal end, the 2nd foot ground connection of the buzzer.

In the stepless speed regulation kitchen ventilator control circuit, the display module includes potentiometer and display chip, described 2nd foot of the first fixing end connection display chip of potentiometer and VCC signal end, the second fixing end connection of the potentiometer are aobvious Show the 18th foot of chip, the 3rd foot of the sliding end connection display chip of the potentiometer.

In the stepless speed regulation kitchen ventilator control circuit, the gear indicating module include 3rd resistor, the 4th resistance, 5th resistance, the 6th resistance, the first light emitting diode, the second light emitting diode, third light emitting diode and the 4th light-emitting diodes The anode of pipe, first light emitting diode connects VCC signal end, the anode of second light emitting diode by 3rd resistor VCC signal end is connected by the 4th resistance, the anode of the third light emitting diode connects VCC signal end by the 5th resistance, The anode of 4th light emitting diode by the 6th resistance connect VCC signal end, the cathode of first light emitting diode, The cathode of the cathode of second light emitting diode, the cathode of third light emitting diode and the 4th light emitting diode is all connected with control mould Block.

A kind of stepless speed regulation kitchen ventilator, including pcb board are provided with stepless speed regulation oil smoke as described above on the pcb board Machine control circuit.

Compared to the prior art, stepless speed regulation kitchen ventilator provided by the utility model and its control circuit, wherein the nothing Grade speed regulation kitchen ventilator control circuit includes control module, oil smoke detection module, drive module, gear selection module and motor, by The present mode of operation of stepless speed regulation kitchen ventilator is set automatic running pattern by the gear selection module, is examined by the oil smoke Module real-time detection oil smoke concentration information is surveyed, and the oil smoke concentration information is converted into electric signal and is exported to control module, by Output speed regulating control signal is to drive module after the control module carries out analog-to-digital conversion to the electric signal, according to the speed regulation The driving DC voltage for controlling drive module described in Signal Regulation, is driven by the drive module according to the driving DC voltage Motor realizes the automatic regulation function of stepless speed regulation kitchen ventilator revolving speed with corresponding rotational speed preset voltage value, in turn Improve practicability and the safety of kitchen ventilator.

Detailed description of the invention

Fig. 1 is the structural block diagram of stepless speed regulation kitchen ventilator control circuit provided by the utility model；

Fig. 2 is control module in stepless speed regulation kitchen ventilator control circuit provided by the utility model, oil smoke detection module, report Alert module, temperature detecting module, gear selection module and gear indicating module circuit diagram；

Fig. 3 is the circuit diagram of drive module in stepless speed regulation kitchen ventilator control circuit provided by the utility model；

Fig. 4 is the circuit diagram of display module in stepless speed regulation kitchen ventilator control circuit provided by the utility model.

Specific embodiment

The utility model provides a kind of stepless speed regulation kitchen ventilator and its control circuit to be made by adding automatic running pattern The revolving speed of motor can be automatically adjusted according to the concentration of oil smoke by obtaining stepless speed regulation kitchen ventilator, and realize auto-alarm function, Jin Erti The practicability of high kitchen ventilator and safety.

To keep the purpose of this utility model, technical solution and effect clearer, clear, develop simultaneously implementation referring to the drawings The utility model is further described in example.It should be appreciated that specific embodiment described herein is only practical to explain It is novel, it is not used to limit the utility model.

Referring to Fig. 1, the control circuit of stepless speed regulation kitchen ventilator provided by the utility model, including control module 100, oil Cigarette detection module 200, drive module 300, gear selection module 400 and motor M1, the oil smoke detection module 200, driving mould Block 300 and gear selection module 400 are connect with control module 100, and the drive module 300 is also connect with motor M1；By institute Gear selection module 400 is stated to set automatic running pattern for the present mode of operation of stepless speed regulation kitchen ventilator or run mould manually Formula, if present mode of operation is automatic running pattern, by the 200 real-time detection oil smoke concentration information of oil smoke detection module, and It is converted into electric signal to export to control module 100, after carrying out analog-to-digital conversion to the electric signal by the control module 100 Speed regulating control signal is exported to drive module 300, according to the direct current of drive module 300 described in the speed regulating control Signal Regulation Pressure driving, by the drive module 300 according to the driving DC voltage driving motor M1 with the default electricity of corresponding rotational speed Pressure value.

The stepless kitchen ventilator is provided with automatic running pattern and manual mode of operation, can pass through gear selection module 400 Select the operational mode of stepless kitchen ventilator.When stepless kitchen ventilator is in automatic running pattern, the oil smoke detection module 200 can The concentration of the gases such as automatic detection oil smoke, smog, culinary art, and the oil smoke that will test, smog, culinary art lamp analog signal are converted to Electric signal is exported to control module 100, and the size of the electric signal is generated the speed regulation of adjustable pulse width section by the control module 100 Control signal, and then the driving DC voltage of the drive module according to the speed regulating control Signal Regulation, the drive module 300 according to direct voltage drive motor M1 with corresponding rotational speed, speed regulating control signal described herein is pwm signal, The size of driving DC voltage is adjusted according to the size of the pwm signal, and then realizes that stepless kitchen ventilator automatically adjusts motor The function of M1 revolving speed provides convenience for the use of user.

It further, further include alarm module, when the electric signal is greater than preset voltage value, the alarm module 500 It is connect with control module 100, by the control module 100 output predetermined level signal to alarm module 500, controls the alarm Module 500 exports warning message.

When the control module 100 detects that the electric signal is greater than preset voltage value, then show the oil smoke concentration It is excessive, and then it is defeated to control the alarm module 500 to alarm module 500 by the control module 100 output predetermined level signal Warning message out reminds the current oil smoke concentration of user excessively high in time, and then passes through the auto-alarm function of stepless speed regulation kitchen ventilator, Improve the safety of stepless speed regulation kitchen ventilator.Preferably, preset voltage value described in the present embodiment is 3.6V, described default Level signal is low level signal.

Further, the control circuit further includes temperature detecting module 600, the temperature detecting module 600 and control Module 100 connects, and detects current environmental temperature by the temperature detecting module 600, and exports current environmental temperature information to control Molding block 100.The stepless speed regulation kitchen ventilator passes through 600 real-time monitoring of temperature detecting module in the process used Current environment temperature realizes stepless speed regulation kitchen ventilator to the supervisory function bit of current environmental temperature.

Further, the control circuit further includes display module 700, the display module 700 and control module 100 connections, are exported the current environmental temperature information to display module 700 by the control module 100, by the display mould Block 700 shows current context information, current environment temperature is shown by the display module 700, in order to which user is intuitive The current environmental aspect understood, and then the operational mode of stepless speed regulation kitchen ventilator can be selected according to environmental aspect, to ensure The service life of stepless speed regulation kitchen ventilator.

Further, the control circuit further includes gear indicating module 800, the gear indicating module 800 and control Molding block 100 connects, corresponding according to the output of the present mode of operation of stepless speed regulation kitchen ventilator by the gear indicating module 800 Indicate information.Accordingly, when stepless speed regulation kitchen ventilator is in different operational modes, the meeting pair of gear indicating module 800 The output instruction information answered, the operating status of current stepless speed regulation kitchen ventilator is intuitively obtained convenient for user, and then facilitate user Carry out next step from main regulation.

When it is implemented, referring to Fig. 2, the control module 100 includes control chip U1, first switch key S1, the One capacitor C1, the second capacitor C2, third capacitor C3, first resistor R1 and oscillator Y1, one end of the first switch key S1, One end of first capacitor C1 and one end of first resistor R1 be all connected with control chip U1 the 9th foot, the first switch it is another The other end of end and first capacitor C1 are all connected with VCC signal end, the first resistor R1 other end ground connection；Second capacitor One end of C2 and one end of oscillator Y1 are all connected with the 18th foot of control chip U1, one end of the third capacitor C3 and oscillator The other end of Y1 is all connected with the 19th foot of control chip U1, the other end of the second capacitor C2 and the other end of third capacitor C3 It is grounded；The 1st foot of control chip U1, the 2nd foot and the 10th foot are all connected with drive module 300, and the of the control chip U1 3 feet and the 4th foot are all connected with oil smoke detection module 200；The 12nd foot, the 13rd foot, the 14th foot and the 15th foot of the control chip U1 It is all connected with gear selection module 400, the 21st foot of the control chip U1 connects temperature detecting module 600, the control chip The 22nd foot of U1 connects alarm module 500；Control the 24th foot of chip U1, the 25th foot, the 26th foot, the 27th foot, the 28th foot, 32nd foot, the 33rd foot, the 34th foot, the 35th foot, the 36th foot, the 37th foot, the 38th foot and the 39th foot are all connected with display module 700.

The 3rd foot and the 4th foot of the control chip U1 receives the electric signal of the oil smoke detection module 200, and then by institute It states electric signal and carries out analog-to-digital conversion；And then the PWM of adjustable pulse width is generated according to the sizes values of electric signal by control chip U1 Signal is exported from the 10th foot to drive module 300 to generate variable DC voltage, and then realizes that stepless kitchen ventilator is adjusted automatically Save the function of motor M1 revolving speed.Preferably, it is high level signal, institute that the 1st foot of the control chip U1, which is set as constant 1, It is low level signal that the 2nd foot for stating control chip U1, which is set as constant 0, so realize so that motor M1 in one direction Oil smoke is extracted in rotation.In addition, when the sizes values of the electric signal are greater than preset voltage value 3.6V, then by the control chip The 22nd foot of U1 exports a low level signal to alarm module 500, so that the alarm module 500 exports warning message and carries out Alarm reminds the current oil smoke concentration of user excessively high, improves the safety of stepless speed regulation kitchen ventilator in time.In the present embodiment, institute Other can also be used with identical function certainly in other embodiments in the model STC12C5A60S2 for stating control chip U1 Control chip U1, the utility model is not construed as limiting this.

Further, the first switch key S1 is manual reset switch, when pressing first switch key S1, so that VCC signal is terminated into the 9th foot of control chip U1, and the VCC signal end and first capacitor C1 and first resistor R1 are constituted certainly at this time Dynamic reset circuit, so that the control chip U1 power-on reset is to original state, while first capacitor C1 entrance is filled Electricity condition, when the electricity of the first capacitor C1 is identical as the voltage at VCC signal end, the decline of first resistor R1 both end voltage, It is not resetting, is being resetted again until being re-energised next time.The oscillator Y1, the second capacitor C2 and third capacitor C3 constitute starting of oscillation Circuit, generation fixed frequency, which is given, controls chip U1, scan round program of the control chip U1 according to the frequency in cycles, Peripheral circuit is controlled.

Further, also referring to Fig. 3, the drive module 300 includes driving chip U2, the 4th capacitor C4 and power supply One end of interface J1, the 4th capacitor C4 connect the 6th foot and DC 9-36V of the 1st foot of power interface J1, driving chip U2 Signal end, the other end of the 4th capacitor C4 connect the 3rd foot and ground terminal of the 2nd foot of power interface J1, power interface J1, One end of the 8th foot connection motor M1 of the driving chip U2, the 9th of the other end connection driving chip U2 of the motor M1 the Foot, the 2nd foot of the driving chip U2 connect the 10th foot of the control chip U1, the 3rd foot connection of the driving chip U2 Control the 2nd foot of chip U1, the 1st foot of the 4th foot connection control chip U1 of the driving chip U2.

The 2nd foot of the driving chip U2 receives the DC voltage of control chip U1, and will be described by control chip U1 DC voltage amplifies processing, and the revolving speed size of the motor M1 is controlled according to the size of DC voltage.The driving core The 2nd foot of piece U2 and the 4th foot receive to control the constant high level signal and low level signal of chip U1 output respectively, and then make It obtains the driving chip U2 driving motor M1 fixation to rotate in one direction, extracts oil smoke.In addition, the driving chip U2 passes through It is that the oil smoke detection module 200 and control module 100 provide the electric energy of 5V after the DC power supply of the external 9-32V of connection, in turn Guarantee the normal work of the control module 100 and oil smoke detection module 200.In the present embodiment, the type of the driving chip U2 It number is that other driving chip U2 with the same function can also be used certainly in other embodiments in AQMH3615NS, this is practical It is novel that this is not construed as limiting.Preferably, the power interface J1 is DC-005 5.5-2.1MM Direct current power source socket interface.

Further, please continue to refer to Fig. 1, the oil smoke detection module 200 includes smoke sensor device U3, and the smog passes The 1st foot of sensor U3 is grounded, the 2nd foot connection VCC signal end of the smoke sensor device U3, and the 3rd of the smoke sensor device U3 the The 3rd foot of foot connection control chip U1, the 4th foot of the 4th foot connection control chip U1 of the smoke sensor device U3.Pass through institute Oil smoke, smog, the culinary art lamp stating the concentration of the gases such as smoke sensor device U3 real-time detection oil smoke, smog, culinary art, and will test Analog signal is converted to electric signal and exports to control chip U1, and control chip U1 is adjusted in real time according to oil smoke concentration size The size of motor M1 revolving speed is saved, realizes the automatic speed regulation process of stepless speed regulation kitchen ventilator.In the present embodiment, the smog sensing Other smoke sensor devices with the same function can also be used certainly in other embodiments in the model TGS2600 of device U3 U3, the utility model are not construed as limiting this.

Preferably, the temperature detecting module 600 includes temperature sensor U4, and the 1st foot of the temperature sensor U4 connects Ground, the 21st foot of the 2nd foot connection control chip U1 of the temperature sensor U4, the 3rd foot connection of the temperature sensor U4 VCC signal end.By the current environment temperature of the temperature sensor U4 real-time monitoring, realize stepless speed regulation kitchen ventilator to current The supervisory function bit of environment temperature.

Further, the alarm module 500 includes second resistance R2R2, triode Q1 and buzzer P1, and described three The base stage of pole pipe Q1 connects buzzer P1 by second resistance R2R2 link control module 100, the collector of the triode Q1 The 1st foot, the emitter of the triode Q1 connects VCC signal end, the 2nd foot ground connection of the buzzer P1.When the control When chip U1 detects that the value of electric signal is greater than preset voltage value, then a low level signal is exported to triode by the 22nd foot Q1 alarms so that triode Q1 is connected so that buzzer P1 be driven to make a sound, and realizes the automatic of stepless speed regulation kitchen ventilator Warning function.

Further, referring to Figure 4 together, the display module 700 includes potentiometer W1 and display chip U5, institute The 2nd foot and VCC signal end, the second of the potentiometer W1 for stating the first fixing end connection display chip U5 of potentiometer W1 are solid Fixed end connects the 18th foot of display chip U5, the 3rd foot of the sliding end connection display chip U5 of the potentiometer W1；It is described aobvious Show that the 17th foot of chip U5 connects the 24th foot of the control chip U1, the 15th foot of the display chip U5 connects the control The 25th foot of coremaking piece U1, the 14th foot of the display chip U5 connect the 32nd foot of the control chip U1, the display core The 13rd foot of piece U5 connects the 33rd foot of the control chip U1, and the 12nd foot of the display chip U5 connects the control core The 34th foot of piece U1, the 11st foot of the display chip U5 connect the 35th foot of the control chip U1, the display chip U5 The 10th foot connect the 36th foot of the control chip U1, the 9th foot of the display chip U5 connects the control chip U1 37th foot, the 8th foot of the display chip U5 connect the 38th foot of the control chip U1, the 7th foot of the display chip U5 The 39th foot of the control chip U1 is connected, the 6th foot of the display chip U5 connects the 26th foot of the control chip U1, institute State display chip U5 the 5th foot connect it is described control chip U1 the 27th foot, the display chip U5 the 4th foot connection described in Control the 28th foot of chip U1.In the present embodiment, the model LCD12864 of the display chip U5, certainly in other implementations In example, other display chip U5 with the same function can also be used, the utility model is not construed as limiting this.

Preferably, please continue to refer to Fig. 1, the gear selection module 400 is pressed including second switch key S2, third switch Key S3, the 4th switch key S4 and the 5th switch key S5, one end connection control chip U1's of the second switch key S2 12nd foot, the 13rd foot of one end connection control chip U1 of the third switch key S3, the one of the 4th switch key S4 The 14th foot of end control chip U1, the 15th foot of one end connection control chip U1 of the 5th switch key S5, described second The other end of switch key S2, the other end of third switch key S3, the other end of the 4th switch key S4 and the 5th switch are pressed The other end of key S5 is grounded.When pressing the second switch key S2, the 12nd foot of the control chip U1 is low level, The automatic running pattern of stepless speed regulation kitchen ventilator is opened at this time；When pressing third switch key S3, the control chip U1's 13rd foot is low level, and stepless speed regulation kitchen ventilator enters the low or first gear operating status in manual mode of operation at this time；When pressing When stating the 4th switch key S4, the 14th foot of the control chip U1 is low level, and stepless speed regulation kitchen ventilator enters manual at this time Mid ranger operating status in operational mode；When pressing the 5th switch key S5, the 15th foot of the control chip U1 For low level, stepless speed regulation kitchen ventilator enters the top gear operating status in manual mode of operation at this time.Opened by different Close button can flexibly control the operational mode of stepless speed regulation kitchen ventilator, carry out flexible modulation according to their own needs convenient for user.

It is further preferred that the gear indicating module 800 include 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, 6th resistance R6, the first light emitting diode D1, the second light emitting diode D2, third light emitting diode D3 and the 4th light emitting diode The anode of D4, the first light emitting diode D1 pass through 3rd resistor R3 connection VCC signal end, the second light emitting diode D2 Anode by the 4th resistance R4 connection VCC signal end, the anode of the third light emitting diode D3 passes through the 5th resistance R5 company VCC signal end is connect, the anode of the 4th light emitting diode D4 passes through the 6th resistance R6 connection VCC signal end, first hair The 5th foot of the cathode connection control chip U1 of optical diode D1, the cathode connection control chip U1's of the second light emitting diode D2 6th foot, the 7th foot of the cathode connection control chip U1 of third light emitting diode D3, the cathode connection of the 4th light emitting diode D4 Control the 8th foot of chip U1.

When stepless speed regulation kitchen ventilator is currently automatic running pattern, the first light emitting diode D1 shine aobvious Show, when stepless speed regulation kitchen ventilator is currently the low or first gear operating status in manual mode of operation, second light emitting diode D2 carries out luminescence display；When stepless speed regulation kitchen ventilator is currently the mid ranger operating status in manual mode of operation, described Three light emitting diode D3 carry out luminescence display；When stepless speed regulation kitchen ventilator is currently the top gear operation shape in manual mode of operation When state, the 4th light emitting diode D4 carries out luminescence display；Also, when one of light emitting diode is lighted, Qi Tafa Optical diode keeps OFF state.It can be stepless in order to simple and clear determination by the luminous situation of different light emitting diodes Adjust the speed the operational mode of kitchen ventilator.

The utility model further correspondingly provides a kind of stepless speed regulation kitchen ventilator, including pcb board, is provided on the pcb board The control circuit of stepless speed regulation kitchen ventilator, since the control circuit being described in detail above, details are not described herein again.

In conclusion stepless speed regulation kitchen ventilator provided by the utility model and its control circuit, wherein the stepless speed regulation Kitchen ventilator control circuit includes control module, oil smoke detection module, drive module, gear selection module and motor, by the shelves The present mode of operation of stepless speed regulation kitchen ventilator is set automatic running pattern by position selecting module, by the oil smoke detection module Real-time detection oil smoke concentration information, and the oil smoke concentration information is converted into electric signal and is exported to control module, by the control Output speed regulating control signal is believed to drive module according to the speed regulating control after molding block carries out analog-to-digital conversion to the electric signal The driving DC voltage for number adjusting the drive module, by the drive module according to the driving DC voltage driving motor with Corresponding rotational speed preset voltage value, and then realize the automatic regulation function of stepless speed regulation kitchen ventilator revolving speed, and then improve oil The practicability of smoke machine and safety.

It is understood that for those of ordinary skills, can with technical solution according to the present utility model and The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to appended by the utility model Scope of protection of the claims.

Claims (10)

1. a kind of stepless speed regulation kitchen ventilator control circuit, which is characterized in that including control module, oil smoke detection module, driving mould Block, gear selection module and motor are set the present mode of operation of stepless speed regulation kitchen ventilator to by the gear selection module Automatic running pattern is converted by the oil smoke detection module real-time detection oil smoke concentration information, and by the oil smoke concentration information It exports for electric signal to control module, output speed regulating control is believed after carrying out analog-to-digital conversion to the electric signal by the control module Number to drive module, according to the driving DC voltage of drive module described in the speed regulating control Signal Regulation, by the driving mould Root tuber is according to the driving DC voltage driving motor with corresponding rotational speed.

2. stepless speed regulation kitchen ventilator control circuit according to claim 1, which is characterized in that it further include alarm module, when When the electric signal is greater than preset voltage value, predetermined level signal is exported to alarm module, described in control by the control module Alarm module exports warning message.

3. stepless speed regulation kitchen ventilator control circuit according to claim 1, which is characterized in that further include temperature detection mould Block, the temperature detecting module are connect with control module, detect current environmental temperature by the temperature detecting module, and export and work as Preceding ambient temperature information is to control module.

4. stepless speed regulation kitchen ventilator control circuit according to claim 3, which is characterized in that it further include display module, institute It states display module to connect with control module, is exported the current environmental temperature information to display module by the control module, Current context information is shown by the display module.

5. stepless speed regulation kitchen ventilator control circuit according to claim 1, which is characterized in that further include gear instruction mould Block, the gear indicating module are connect with control module, by the gear indicating module according to the current of stepless speed regulation kitchen ventilator Operational mode exports corresponding instruction information.

6. stepless speed regulation kitchen ventilator control circuit according to claim 1, which is characterized in that the control module includes control Coremaking piece, first switch key, first capacitor, the second capacitor, third capacitor, first resistor and oscillator, the first switch One end of one end of key, one end of first capacitor and first resistor is all connected with the 9th foot of control chip, the first switch The other end and the other end of first capacitor are all connected with VCC signal end, the first resistor other end ground connection；Second capacitor One end and one end of oscillator are all connected with the 18th foot of control chip, and one end of the third capacitor and the other end of oscillator are equal 19th foot of connection control chip, the other end of second capacitor and the other end of third capacitor are grounded.

7. stepless speed regulation kitchen ventilator control circuit according to claim 1, which is characterized in that the drive module includes driving Dynamic chip, the 4th capacitor and power interface, the 6th of the 1st foot of one end connection power interface of the 4th capacitor, driving chip the Foot and DC 9-36V signal end, other end connection the 2nd foot of power interface of the 4th capacitor, the 3rd foot of power interface and Ground terminal, one end of the 8th foot connection motor of the driving chip, the 9th foot of the other end connection driving chip of the motor.

8. stepless speed regulation kitchen ventilator control circuit according to claim 2, which is characterized in that the alarm module includes the The base stage of two resistance, triode and buzzer, the triode passes through second resistance link control module, the collection of the triode Electrode connects the 1st foot of buzzer, and the emitter of the triode connects VCC signal end, the 2nd foot ground connection of the buzzer.

9. stepless speed regulation kitchen ventilator control circuit according to claim 4, which is characterized in that the display module includes electricity Position device and display chip, the 2nd foot of the first fixing end connection display chip of the potentiometer and VCC signal end, the current potential 18th foot of the second fixing end connection display chip of device, the 3rd foot of the sliding end connection display chip of the potentiometer.

10. a kind of stepless speed regulation kitchen ventilator, including pcb board, which is characterized in that be arranged on the pcb board just like claim 1-9 Stepless speed regulation kitchen ventilator control circuit described in any one.