CN104242779A - Smoke exhaust ventilator controller - Google Patents
Smoke exhaust ventilator controller Download PDFInfo
- Publication number
- CN104242779A CN104242779A CN201410547225.9A CN201410547225A CN104242779A CN 104242779 A CN104242779 A CN 104242779A CN 201410547225 A CN201410547225 A CN 201410547225A CN 104242779 A CN104242779 A CN 104242779A
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- China
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- control unit
- unit
- cooker hood
- hood controller
- optocoupler
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Abstract
The invention relates to the field of smoke exhaust ventilators, in particular to a smoke exhaust ventilator controller. The smoke exhaust ventilator controller comprises a first control unit, a silicon controlled speed regulating unit and an optical coupling unit, and the first control unit controls the silicon controlled speed regulating unit and optical coupling unit to control the motor rotating speed of the smoke exhaust ventilator. The smoke exhaust ventilator controller is capable of realizing multi-gear speed regulation for the smoke exhaust ventilator and effectively controlling the cost of the smoke exhaust ventilator controller.
Description
Technical field
The present invention relates to smoke exhaust ventilator field, be specifically related to a kind of cooker hood controller.
Background technology
Along with the epoch are progressive, smoke exhaust ventilator had had a lot of innovation (lifting folding, cleaning etc.) in recent years.Wind speed adjustment aspect Ye You producer attempts to make " stepless " speed governing.But there is the defect of technical elements: first, AC induction motor gear be can not make more, and cost is also high.The AC induction motor speed that existing smoke exhaust ventilator uses is generally maximum three gears, and 4 or more gears are made by few producer.Existing cooker hood controller generally controls the gear of alternating current machine respectively by relay: such as one AC induction motor with two speed (gear), there are 5 wiring, wherein 2 external matching capacitance, other 3 are respectively: zero line, fast shelves and slow shelves.Cooker hood controller generally designs and controls the fast shelves of motor, slow shelves respectively with 2 relays.As a same reason, the motor with n shelves will use n relay to go to control.Controller controls more gears just needs relay more, and cost is also higher.
Summary of the invention
The object of the invention is to the defect for prior art and deficiency, a kind of cooker hood controller is provided.
For achieving the above object, the technical solution used in the present invention is:
A kind of cooker hood controller, comprising: the first control unit, thyristor speed control unit and optocoupler unit, and described first control unit controls thyristor speed control unit and the motor speed of optocoupler unit to smoke exhaust ventilator controls.
Further, the described motor speed to smoke exhaust ventilator carries out control and comprises:
When the first control unit exports high level, optocoupler unit ends, and thyristor speed control unit does not export;
When the first control unit output low level, optocoupler cell conduction, thyristor speed control unit forms loop conducting by optocoupler unit, line output of going forward side by side.
Further, described cooker hood controller also comprises: zero passage detection unit, and described zero passage detection unit for detecting that 220VAC level prepares the moment of zero passage, and opens thyristor speed control unit at described zero-acrross ing moment.
Further, the described motor speed to smoke exhaust ventilator carries out control and comprises:
When the first control unit exports high level, optocoupler unit ends, and when zero passage detecting unit detects 220VAC level zero passage, thyristor speed control unit does not export;
When the first control unit output low level, optocoupler cell conduction, thyristor speed control unit forms loop conducting by optocoupler unit, and when zero passage detecting unit detects 220VAC level zero passage, thyristor speed control unit exports.
Further, described cooker hood controller also comprises buzzer polyphonic ring tone driver element and direct current machine elevation driving unit, described buzzer polyphonic ring tone driver element is connected with the first control unit, and described direct current machine elevation driving unit is connected with the first control unit.
Further, described cooker hood controller also comprises the second control unit, and described second control unit is communicated by monobus half-duplex mode with between the first control unit.
Further, described cooker hood controller also comprises touch reading unit and touches driver element, and described touch reading unit is connected with the second control unit, for receiving the control command of user with touch driver element.
Further, described cooker hood controller also comprises display processing unit and display driver unit, and described display processing unit is connected with the second control unit with display driver unit, for showing the state of smoke exhaust ventilator.
After adopting said structure, beneficial effect of the present invention is: cooker hood controller of the present invention effectively can control the cost of cooker hood controller while realization is to many gears speed governing of smoke exhaust ventilator.
Accompanying drawing explanation
Fig. 1 is the structural representation of cooker hood controller of the present invention;
Fig. 2 is the schematic block circuit diagram of cooker hood controller of the present invention;
Fig. 3 is the oscillogram of complete AC220V electric current of the present invention;
Fig. 4 is the oscillogram of the AC220V electric current after rectification of the present invention;
Fig. 5 is the output waveform figure of optocoupler unit of the present invention;
Fig. 6 is that cooker hood controller of the present invention carries out the schematic diagram of speed governing to motor.
Description of reference numerals:
1, the first control unit; 2, thyristor speed control unit; 3, zero passage detection unit;
4, buzzer polyphonic ring tone driver element; 5, direct current machine elevation driving unit;
6, the second control unit; 7, driver element is touched; 8, display driver unit;
9, reading unit is touched; 10, display processing unit; 11, optocoupler unit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figures 1 to 6, a kind of cooker hood controller of the present invention, comprise: the first control unit 1, the motor speed that thyristor speed control unit 2 and optocoupler unit 11, first control unit 1 control thyristor speed control unit 2 and optocoupler unit 11 pairs of smoke exhaust ventilators controls.
Wherein, carry out control to the motor speed of smoke exhaust ventilator to comprise:
When the control mouth P_OUT of the first control unit 1 (BT136-600E) exports as high level, optocoupler unit 11 (MOC3021) ends, and the G pole of thyristor speed control unit 2 does not have current flowing, and the T1 of thyristor speed control unit 2 does not export;
When the control mouth P_OUT output low level of the first control unit 1, optocoupler unit 11 conducting, the G pole of thyristor speed control unit 2 forms loop conducting by the two-way pipe of optocoupler unit 11, and the T1 of thyristor speed control unit 2 exports.
Cooker hood controller also comprises: zero passage detection unit 3, and zero passage detection unit 3 for detecting that 220VAC level prepares the moment of zero passage, and opens thyristor speed control unit 2 by software delay at described zero-acrross ing moment.
Control also to comprise to the motor speed of smoke exhaust ventilator:
When the control mouth P_OUT of the first control unit 1 exports high level, optocoupler unit 11 ends, and when zero passage detecting unit 3 detects 220VAC level zero passage, the G pole of thyristor speed control unit 2 does not have current flowing, and the T1 of thyristor speed control unit 2 does not export;
When the control mouth P_OUT output low level of the first control unit 1, optocoupler unit 11 conducting, thyristor speed control unit 2 forms loop conducting by optocoupler unit, when zero passage detecting unit 3 detects 220VAC level zero passage, the G pole of thyristor speed control unit 2 does not have current flowing, and the T1 of thyristor speed control unit 2 does not export.
Cooker hood controller also comprises buzzer polyphonic ring tone driver element 4 and direct current machine elevation driving unit 5, and buzzer polyphonic ring tone driver element 4 is connected with the first control unit 1, and direct current machine elevation driving unit 5 is connected with the first control unit 1.
Cooker hood controller is also comprised the second control unit 6, second control unit 6 and is communicated by monobus half-duplex mode with between the first control unit 1.
Cooker hood controller also comprises touch reading unit 9 and touches driver element 7, touches reading unit 9 and is connected with the second control unit 6, for receiving the control command of user with touch driver element 7.
Cooker hood controller also comprises display processing unit 10 and display driver unit 8, and display processing unit 10 is connected with the second control unit 6 with display driver unit 8, for showing the state of smoke exhaust ventilator.
Embodiment
Experiment proof controllable silicon " phase modulation ", although it is feasible that mode changes alternating current machine rotating speed, can affects the twisting resistance of motor internal, cause alternating current machine noise serious.In order to not affect alternating current machine internal torsion power, just can not carry out tune Phase Processing to the sine wave in alternating current one-period, and needs carry out the speed governing to alternating current machine by change civil power sine wave period wave number.Such as make one-period with 6 sinusoidal cycles ripples.As shown in Figures 2 to 6, speed regualtion of AC motor controls in drive circuit, thyristor speed control unit uses bidirectional triode thyristor BT136-600E, utilize optocoupler MOC3021 isolated controlling, P_OUT is the control mouth of the first control unit: when P_OUT is high level, optocoupler ends, and silicon controlled G pole does not have current flowing, and when 220VAC zero passage, controllable silicon T1 does not export.When P_OUT is low level, optocoupler conducting, controllable silicon G pole forms loop conducting by pipe two-way on optocoupler, and controllable silicon T1 exports.Use optocoupler PC817 to read the voltage after complete 220VAC waveform in such as soil carries out rectification in zero cross detection circuit wherein, the waveform (as shown in Figure 4) that its exports does negate process by NPN triode again.In Fig. 2, L1 voltage is connected on after being connected in series 120K resistance on optocoupler PC817, and D11 diode prevents optocoupler overvoltage from burning out.Optocoupler output ZERO pull-up 4.7K to 5V, forms ZERO waveform as shown in Figure 5.The first control unit (MCU) in the present embodiment, power panel used is 51 cores, its external interrupt mouth level declines and triggers, therefore optocoupler output is anti-phase through triode again, export P_INIT waveform, can detect that 220VAC level prepares the moment of zero passage like this, controllable silicon can be controlled at 220VAC zero-acrross ing moment exactly by software delay to open, solve the problem that controllable silicon " phase modulation position " can affect motor internal twisting resistance.
As shown in Figure 6, obtain the waveform under controllable silicon " tune cycle ", MCU needs to have no progeny in zero passage detection enters and judges whether this cycle will open output (one-period ripple zero passage 2 times, therefore as wanting continuous 2 times of will exporting, is not opened equally and wanted continuous 2 times yet).As P_OUT wave form output in Fig. 6 can obtain corresponding T1 waveform.
Have 6 periodic waves in Fig. 6, if during controlled silicon conducting 1 to 6 periodic wave, the generation power of this voltage to alternating current machine is P (speed governing maximum).When controlled silicon conducting periodic wave 1,3,5, close periodic wave 2,4, when 6, this voltage is to generation power P/2 of alternating current machine.When controlled silicon conducting periodic wave 1,2,4,6, close periodic wave 3,5, this voltage is to the generation power P 4/6 of alternating current machine, and waveform is now as the waveform of T1 in Fig. 6 (AC) correspondence.
In the present embodiment, power panel employs the MCU of the N79E814A (51 kernel) of nuvoton.Software application C language designs, software programming software: Keil uVision4.Here is relevant program code:
The above is only better embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (8)
1. a cooker hood controller, is characterized in that: comprising: the first control unit, thyristor speed control unit and optocoupler unit, and described first control unit controls thyristor speed control unit and the motor speed of optocoupler unit to smoke exhaust ventilator controls.
2. cooker hood controller according to claim 1, is characterized in that: the described motor speed to smoke exhaust ventilator carries out control and comprises:
When the first control unit exports high level, optocoupler unit ends, and thyristor speed control unit does not export;
When the first control unit output low level, optocoupler cell conduction, thyristor speed control unit forms loop conducting by optocoupler unit, line output of going forward side by side.
3. cooker hood controller according to claim 1, it is characterized in that: described cooker hood controller also comprises: zero passage detection unit, described zero passage detection unit for detecting that 220VAC level prepares the moment of zero passage, and opens thyristor speed control unit at described zero-acrross ing moment.
4. cooker hood controller according to claim 3, is characterized in that: the described motor speed to smoke exhaust ventilator carries out control and comprises:
When the first control unit exports high level, optocoupler unit ends, and when zero passage detecting unit detects 220VAC level zero passage, thyristor speed control unit does not export;
When the first control unit output low level, optocoupler cell conduction, thyristor speed control unit forms loop conducting by optocoupler unit, and when zero passage detecting unit detects 220VAC level zero passage, thyristor speed control unit exports.
5. the cooker hood controller according to Claims 1-4 any one, it is characterized in that: described cooker hood controller also comprises buzzer polyphonic ring tone driver element and direct current machine elevation driving unit, described buzzer polyphonic ring tone driver element is connected with the first control unit, and described direct current machine elevation driving unit is connected with the first control unit.
6. the cooker hood controller according to Claims 1-4 any one, it is characterized in that: described cooker hood controller also comprises the second control unit, described second control unit is communicated by monobus half-duplex mode with between the first control unit.
7. cooker hood controller according to claim 6, it is characterized in that: described cooker hood controller also comprises touch reading unit and touches driver element, described touch reading unit is connected with the second control unit, for receiving the control command of user with touch driver element.
8. cooker hood controller according to claim 6, it is characterized in that: described cooker hood controller also comprises display processing unit and display driver unit, described display processing unit is connected with the second control unit with display driver unit, for showing the state of smoke exhaust ventilator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547225.9A CN104242779A (en) | 2014-10-15 | 2014-10-15 | Smoke exhaust ventilator controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410547225.9A CN104242779A (en) | 2014-10-15 | 2014-10-15 | Smoke exhaust ventilator controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104242779A true CN104242779A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410547225.9A Pending CN104242779A (en) | 2014-10-15 | 2014-10-15 | Smoke exhaust ventilator controller |
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| CN (1) | CN104242779A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301134A (en) * | 2015-06-08 | 2017-01-04 | 华帝股份有限公司 | Control method and control device of silicon controlled speed-regulating range hood |
| CN109391181A (en) * | 2017-08-07 | 2019-02-26 | 大青节能科技股份有限公司 | The fast control module of section and motor control system |
-
2014
- 2014-10-15 CN CN201410547225.9A patent/CN104242779A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301134A (en) * | 2015-06-08 | 2017-01-04 | 华帝股份有限公司 | Control method and control device of silicon controlled speed-regulating range hood |
| CN109391181A (en) * | 2017-08-07 | 2019-02-26 | 大青节能科技股份有限公司 | The fast control module of section and motor control system |
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