CN104406211A - Device capable of reducing stop abnormal sound of range hood - Google Patents
Device capable of reducing stop abnormal sound of range hood Download PDFInfo
- Publication number
- CN104406211A CN104406211A CN201410695227.2A CN201410695227A CN104406211A CN 104406211 A CN104406211 A CN 104406211A CN 201410695227 A CN201410695227 A CN 201410695227A CN 104406211 A CN104406211 A CN 104406211A
- Authority
- CN
- China
- Prior art keywords
- controller
- module
- power control
- control module
- abnormal sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a device capable of reducing a stop abnormal sound of a range hood. The device comprises a controller, a voltage zero-crossing detection module, a circuit switching module, a power control module and a rotating speed detection module, wherein the rotating speed detection module detects the rotating speed of a fan and transmits the rotating speed data to the controller; the voltage zero-crossing detection module detects a zero-passing point in alternating-current voltage of commercial power and transmits the zero-passing point to the controller; the controller controls the output power of the power control module; the circuit switch module switches the power control module into a draught fan control loop. In the mode, the device can drive a motor to run with lower driving power when a stop button is pressed down, so that the speed of the motor is consistent with the speed of a fan, and the current situation that the using comfort degree of a user is influenced because of poor gear matching degree of a driving system of a draught fan is improved.
Description
Technical field
The present invention relates to household appliance technical field, particularly relate to a kind of device reducing smoke exhaust ventilator shutdown abnormal sound.
Background technology
Smoke exhaust ventilator is a kind of kitchen appliance purifying kitchen environment, and oil smoke, steam and waste gas can be taken away rapidly by it, and outside discharge chamber, decreasing pollution, purifies air.Fume exhaust fan blower mainly adopts AC blower fan, and motor drives fan to rotate; Usually, when user presses stop button, machine operation power supply is cut off at once and quits work, but fan also has certain inertia to continue to rotate at a relatively high speed, at this moment just there is the situation that fan dragging motor rotates, because blower fan drive system gear matches is not enough, obvious noise will be attended by, last till stopping fan rotation, directly affect the comfort of user.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of device reducing smoke exhaust ventilator shutdown abnormal sound; can when pressing stop button; run with less drive force motor; thus make motor speed consistent with fan speed, improve the present situation affecting user's comfort because blower fan drive system gear matches is not enough.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of and reduce the device that abnormal sound shut down by smoke exhaust ventilator, comprising: controller, voltage zero-cross detection module, circuit handover module, power control module and Rotating speed measring module; Described Rotating speed measring module detects rotation speed of fan and rotary speed data is passed to described controller; Described voltage zero-cross detection module detects the zero crossing in mains voltage and passes to described controller; Described controller controls the power output of described power control module; Described circuit handover module is by described power control module incision air-blower control loop.
Preferably, described controller is with ADC or step-by-step counting function and PWM output function, and controller is also provided with crystal oscillator; ADC or step-by-step counting function gather rotation speed of the fan, and PWM output function drives described power control module.
Preferably, described controller is the single-chip microcomputer MSP430F1122 of TI company, and single-chip microcomputer adopts built-in RC mode clocking, and on single-chip microcomputer P2.5 pin, access suppresses resistance R7; The shutdown button of smoke exhaust ventilator is connected on the P2.1 pin of single-chip microcomputer.
Preferably, described voltage zero-cross detection module comprises operational amplifier and sensor, the output signal of sensor is connected on the tripod of operational amplifier, and the crus secunda of operational amplifier is connected to resistance and produces comparative level, and the first pin of operational amplifier accesses the P2.2 pin of described single-chip microcomputer.
Preferably, described power control module receives the Continuity signal of controller, under making IGCT be operated in different angle of flows.
The invention has the beneficial effects as follows: the present invention can improve fume exhaust fan blower drive system gear matches deficiency and produce the present situation of noise.
Accompanying drawing explanation
Fig. 1 is a kind of frame construction schematic diagram reducing device one preferred embodiment of smoke exhaust ventilator shutdown abnormal sound of the present invention;
Fig. 2 is shown a kind of circuit diagram reducing the controller of the device of smoke exhaust ventilator shutdown abnormal sound;
Fig. 3 is shown a kind of circuit diagram reducing the voltage zero-cross detection module of the device of smoke exhaust ventilator shutdown abnormal sound;
Fig. 4 is shown a kind of circuit diagram reducing the circuit handover module of the device of smoke exhaust ventilator shutdown abnormal sound;
Fig. 5 is the shown a kind of power control module of device and circuit diagram of blower fan annexation reducing smoke exhaust ventilator shutdown abnormal sound;
Fig. 6 is shown a kind of circuit diagram reducing the speed monitoring module of the device of smoke exhaust ventilator shutdown abnormal sound;
Fig. 7 is shown a kind of circuit diagram reducing the power control module of the device of smoke exhaust ventilator shutdown abnormal sound.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Refer to Fig. 1 to Fig. 7, the embodiment of the present invention comprises:
Reduce the device that abnormal sound shut down by smoke exhaust ventilator, comprising: controller, voltage zero-cross detection module, circuit handover module, power control module and Rotating speed measring module; Described Rotating speed measring module detects rotation speed of fan and rotary speed data is passed to described controller; Described voltage zero-cross detection module detects the zero crossing in mains voltage and passes to described controller; Described controller controls the power output of described power control module; Described circuit handover module is by described power control module incision air-blower control loop.Controller is in resting state when smoke exhaust ventilator is charged, waits for that the stop signal of smoke exhaust ventilator arrives, if smoke exhaust ventilator stop signal arrives, and fan has certain rotating speed, then trigger controller is started working, and by circuit handover module driving relay, power control module is cut the control loop of blower fan, makes the control of the controlled device of the work of blower fan, simultaneously, the zero crossing of mains voltage signal is detected by voltage zero-cross detection module, using the moment of zero crossing as time reference, progressively change the dutycycle of the pwm signal that controller exports, this pwm signal is connected to the input of power control module, the process of dutycycle from 0% to 100% change, power control module continues the angle of flow shortening IGCT, the voltage keeps be added on blower fan is declined, when detecting that rotation speed of fan is 0, show that blower fan stops operating, at this moment power control module is cut out the control loop of blower fan by circuit handover module, blower fan is made still to accept the control of former control system, last controller enters dormancy, wait for waking up next time.
Described controller is with ADC or step-by-step counting function and PWM output function, and controller also carries crystal oscillator; ADC or step-by-step counting function gather rotation speed of the fan, and PWM output function drives described power control module; Carry crystal oscillator can reduce power consumption, simplify circuit.The single-chip microcomputer MSP430F1122 of TI company selected by described controller, and single-chip microcomputer adopts built-in RC mode clocking, reduces controller volume, simplifies circuit; In order to reduce the clock skew caused because of temperature inversion, on single-chip microcomputer P2.5 pin, access suppresses resistance R7; S1 is the shutdown button of smoke exhaust ventilator, and S1 is connected on the P2.1 pin of single-chip microcomputer, uses interrupt mode to catch trailing edge signal, to reduce the stand-by power consumption of system.
Described voltage zero-cross detection module is for detecting the zero crossing in mains voltage, so that controller exports suitable Continuity signal, power control module is started working; Described voltage zero-cross detection module comprises operational amplifier and sensor, voltage zero-cross detection module P3 port connecting sensor, the output signal of sensor is connected on the tripod of operational amplifier, the crus secunda of operational amplifier is connected to resistance R3 and produces comparative level, finally contains the P2.2 pin of the pulse signal access single-chip microcomputer of rotary speed information from the first pin output packet.Circuit handover module after system start-up, power control module is cut air-blower control loop, so that blower fan can receive the control signal of power control module, circuit handover module physical circuit figure as shown in Figure 4, circuit handover module in annexation as shown in Figure 5.Rotating speed measring module is for detecting the rotating speed of fan, so that correct action made by controller, sensor can the signal type that exports of gated counter or encoder isopulse, is convenient to install and detect; Also can adopt the sensor that analog voltage exports, segmentation detects the size of rotating speed; The circuit of Rotating speed measring module as shown in Figure 6; The P1 mouth access city signal of telecommunication of Rotating speed measring module, forms detecting circuit through resistance R1 and U4, the conducting when voltage waveform is increased beyond the junction voltage of PN junction, produces low level signal at the output of optocoupler; The optocoupler cut-off when voltage reversal, output is high level; Be connected to the P2.0 port of single-chip microcomputer, after single-chip microcomputer produces certain delay according to the moment of zero passage, driving power module exports.Described power control module receives the Continuity signal of controller, under making IGCT be operated in different angle of flows, reaches the object changing power output; Suitable drive singal as shown in Figure 7, when after the zero crossing moment collecting ac voltage signal, exports from P1.0 port by power control module circuit diagram.
The present invention when pressing smoke exhaust ventilator stop button, can run with less drive force motor, thus making motor speed consistent with fan speed, improves the present situation affecting user's comfort because blower fan drive system gear matches is not enough.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. reduce the device that abnormal sound shut down by smoke exhaust ventilator, it is characterized in that, comprising: controller, voltage zero-cross detection module, circuit handover module, power control module and Rotating speed measring module; Described Rotating speed measring module detects rotation speed of fan and rotary speed data is passed to described controller; Described voltage zero-cross detection module detects the zero crossing in mains voltage and passes to described controller; Described controller controls the power output of described power control module; Described circuit handover module is by described power control module incision air-blower control loop.
2. the device of abnormal sound shut down by a kind of smoke exhaust ventilator that reduces according to claim 1, it is characterized in that: described controller is with ADC or step-by-step counting function and PWM output function, and controller is also provided with crystal oscillator; ADC or step-by-step counting function gather rotation speed of the fan, and PWM output function drives described power control module.
3. a kind of device reducing smoke exhaust ventilator shutdown abnormal sound according to claim 2, it is characterized in that: described controller is the single-chip microcomputer MSP430F1122 of TI company, single-chip microcomputer adopts built-in RC mode clocking, and on single-chip microcomputer P2.5 pin, access suppresses resistance R7; The shutdown button of smoke exhaust ventilator is connected on the P2.1 pin of single-chip microcomputer.
4. a kind of device reducing smoke exhaust ventilator shutdown abnormal sound according to claim 3; it is characterized in that: described voltage zero-cross detection module comprises operational amplifier and sensor; the output signal of sensor is connected on the tripod of operational amplifier; the crus secunda of operational amplifier is connected to resistance and produces comparative level, and the first pin of operational amplifier accesses the P2.2 pin of described single-chip microcomputer.
5. a kind of device reducing smoke exhaust ventilator shutdown abnormal sound according to claim 2, is characterized in that: described power control module receives the Continuity signal of controller, under making IGCT be operated in different angle of flows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410695227.2A CN104406211A (en) | 2014-11-27 | 2014-11-27 | Device capable of reducing stop abnormal sound of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410695227.2A CN104406211A (en) | 2014-11-27 | 2014-11-27 | Device capable of reducing stop abnormal sound of range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104406211A true CN104406211A (en) | 2015-03-11 |
Family
ID=52643859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410695227.2A Pending CN104406211A (en) | 2014-11-27 | 2014-11-27 | Device capable of reducing stop abnormal sound of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104406211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112214096A (en) * | 2020-09-08 | 2021-01-12 | 华帝股份有限公司 | Control method and control device capable of reducing power consumption of single chip microcomputer, single chip microcomputer and range hood |
| CN114484542A (en) * | 2022-02-18 | 2022-05-13 | 杭州老板电器股份有限公司 | Fan control method and host machine internet of things control device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2548362Y (en) * | 2002-05-10 | 2003-04-30 | 扬州中凌电机技术有限公司 | Switch reluctance variable-speed motor controller |
| CN101418807A (en) * | 2008-12-03 | 2009-04-29 | 朱鸽 | Governor for AC blower fan |
| US7619380B2 (en) * | 2007-04-12 | 2009-11-17 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Method and apparatus for controlling rotational speed of fan |
| CN201348340Y (en) * | 2008-11-28 | 2009-11-18 | 珠海格力电器股份有限公司 | Speed regulating device and air conditioning system using same |
| CN101876328A (en) * | 2009-10-29 | 2010-11-03 | 浪潮电子信息产业股份有限公司 | Method for reducing start-up noises of server system |
| CN102045010A (en) * | 2009-10-26 | 2011-05-04 | 北新集团建材股份有限公司 | Soft start one-to-multiple control system |
| CN201904751U (en) * | 2010-12-28 | 2011-07-20 | 广州精益汽车空调有限公司 | Brushless fan controller with position sensor |
| CN201916228U (en) * | 2010-12-28 | 2011-08-03 | 广州精益汽车空调有限公司 | Brushless fan controller without position sensor |
-
2014
- 2014-11-27 CN CN201410695227.2A patent/CN104406211A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2548362Y (en) * | 2002-05-10 | 2003-04-30 | 扬州中凌电机技术有限公司 | Switch reluctance variable-speed motor controller |
| US7619380B2 (en) * | 2007-04-12 | 2009-11-17 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Method and apparatus for controlling rotational speed of fan |
| CN201348340Y (en) * | 2008-11-28 | 2009-11-18 | 珠海格力电器股份有限公司 | Speed regulating device and air conditioning system using same |
| CN101418807A (en) * | 2008-12-03 | 2009-04-29 | 朱鸽 | Governor for AC blower fan |
| CN102045010A (en) * | 2009-10-26 | 2011-05-04 | 北新集团建材股份有限公司 | Soft start one-to-multiple control system |
| CN101876328A (en) * | 2009-10-29 | 2010-11-03 | 浪潮电子信息产业股份有限公司 | Method for reducing start-up noises of server system |
| CN201904751U (en) * | 2010-12-28 | 2011-07-20 | 广州精益汽车空调有限公司 | Brushless fan controller with position sensor |
| CN201916228U (en) * | 2010-12-28 | 2011-08-03 | 广州精益汽车空调有限公司 | Brushless fan controller without position sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112214096A (en) * | 2020-09-08 | 2021-01-12 | 华帝股份有限公司 | Control method and control device capable of reducing power consumption of single chip microcomputer, single chip microcomputer and range hood |
| CN112214096B (en) * | 2020-09-08 | 2023-08-11 | 华帝股份有限公司 | Control method and control device capable of reducing power consumption of single-chip microcomputer, single-chip microcomputer and range hood |
| CN114484542A (en) * | 2022-02-18 | 2022-05-13 | 杭州老板电器股份有限公司 | Fan control method and host machine internet of things control device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102589025B (en) | Fan speed adaptive regulation device of range hood and control method thereof | |
| CN102374561B (en) | There is range hood and the control method thereof of automatic flue gas detection device | |
| CN204373022U (en) | A kind of intelligent frequency-conversion range hood | |
| CN101672529B (en) | Controller of heat pump water heater | |
| CN105373037A (en) | Kitchen ventilator control system based on gesture recognition | |
| CN102997373A (en) | Method for controlling outdoor fan of air conditioner according to environmental wind direction | |
| CN103604192A (en) | Energy saving control method of air purifier | |
| CN103697517A (en) | Intelligent variable-frequency range hood | |
| WO2024088013A1 (en) | Range hood | |
| CN106051875A (en) | Extractor hood with automatically controlled gears | |
| CN201527108U (en) | Heat pump water heater controller | |
| CN109861624A (en) | A kind of motor overheat protection method | |
| CN104406211A (en) | Device capable of reducing stop abnormal sound of range hood | |
| CN201656913U (en) | Closed loop control system used for adjusting power of motor | |
| CN202647939U (en) | Intelligent type wireless coordinated type range hood | |
| CN104515173A (en) | Intelligent control circuit of smoke ventilator | |
| CN202843550U (en) | A full-automatic mop drying barrel | |
| CN205714876U (en) | A kind of electric safety fan | |
| CN202250966U (en) | Energy-saving floor fan capable of detecting human body | |
| CN203215989U (en) | Domestic intelligent electric control fan heater control device | |
| CN204987172U (en) | Smoke ventilator's control system | |
| CN201531974U (en) | Industrial environment-friendly air-conditioning control system | |
| CN207230851U (en) | A kind of stepless time adjustment temperature controller for fan coil | |
| CN204480083U (en) | A kind of induction type control system of cooking fume exhauster | |
| CN104242779A (en) | Smoke exhaust ventilator controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |