CN103047164A - Adjustable speed timing exhaust fan - Google Patents
Adjustable speed timing exhaust fan Download PDFInfo
- Publication number
- CN103047164A CN103047164A CN 201310005517 CN201310005517A CN103047164A CN 103047164 A CN103047164 A CN 103047164A CN 201310005517 CN201310005517 CN 201310005517 CN 201310005517 A CN201310005517 A CN 201310005517A CN 103047164 A CN103047164 A CN 103047164A
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- circuit
- ventilating fan
- time base
- fan motor
- pin
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- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses an adjustable speed timing exhaust fan which is characterized by comprising a 220V alternating current supply, a half-wave rectifier circuit, a 18V direct-current voltage-stabilized power supply, a start circuit, a monostable timing circuit, and an exhaust fan motor speed regulating circuit. A time-base circuit IC1 in the monostable timing circuit is of NE555 type. At present, the exhaust fans have single speed and fail to auto-power off; the exhaust fans need to be operate at full speed to ventilate a room or toilet; the exhaust fans fail to auto-power off after operation, so that long-term operation causes electricity waste; and overheat caused by long-term operation of the exhaust fans burns motors easily, and potential fires are caused. After a key switch AN is pushed once, the adjustable speed timing exhaust fan is capable of operating at proper sed. After the exhaust fan operates for 18-20 minutes, the monostable timing circuit auto-cuts off power of an exhaust fan motor M.
Description
Technical field
The invention belongs to the air-conditioning technique field, relate to a kind of timing variable-speed ventilating fan.
Background technique
At present, the common feature of various model ventilating fans is that ventilating fan only has a kind of rotating speed, manually can not regulate the rotating speed of ventilating fan, can not its power supply of autoshutdown.When need to take a breath in room or toilet, can only allow the ventilating fan full speed operation, after the running of ventilating fan plugged, you must constantly keep in mind and close ventilating fan.In case forget the power supply of closing ventilating fan, both caused waste electric power, also can cause the ventilating fan motor because of the overheated easy burn-out motor that works long hours, but also be the hidden danger of having buried of fire.
The practice explanation of maintenance ventilating fan: the damage of ventilating fan causes motor load too heavy and burn out except the dirt on the flabellum oil too much, and also having quite a few is because the ventilating fan motor works long hours, and causes the motor line bag overheated and burn out.
Time-delay variable-speed ventilating fan of the present invention; after pressing one-touch switch AN; ventilating fan motor M is with suitable speed operation; after ventilating fan motor M worked about 18～20 minutes; mono-stable timing circuit will cut off the power supply of ventilating fan motor M automatically; so both can effectively stop unnecessary power wastage, and also effectively protect the ventilating fan motor can not be burned because of overheated.
Timing variable-speed ventilating fan of the present invention is well suited in batches exploitation, also is suitable for the Novel exhaust fan that factory's exploitation has the speed governing timing function.
Below describe timing variable-speed ventilating fan of the present invention related relevant technologies content in implementation process in detail.
Summary of the invention
Goal of the invention and beneficial effect: the common feature of various model ventilating fans is on the market: ventilating fan only has a kind of rotating speed, manually can not regulate the rotating speed of ventilating fan, can not its power supply of autoshutdown.When need to take a breath in room or toilet, can only allow the ventilating fan full speed operation, after the work of ventilating fan plugged, you must constantly keep in mind and close ventilating fan.In case you forget the power supply of closing ventilating fan, both caused waste electric power, also cause ventilating fan because of the overheated easy burn-out motor that works long hours, but also be the hidden danger of having buried of fire.
Timing variable-speed ventilating fan of the present invention; after pressing one-touch switch AN; ventilating fan motor M is with suitable rotary speed working; after ventilating fan motor M worked about 18～20 minutes; mono-stable timing circuit will cut off the power supply of ventilating fan motor M automatically; so both stop unnecessary power wastage, and also effectively protected the ventilating fan motor can not burn out because of overheated.
Technical characteristics: timing variable-speed ventilating fan, it comprises 220V Ac, half-wave rectifying circuit, 18V D.C. regulated power supply, starting circuit, mono-stable timing circuit, ventilating fan motor speed adjusting circuit, it is characterized in that:
Starting circuit: it is comprised of time base circuit IC1, resistance R 2, key switch AN, it is NE555 that time base circuit IC1 selects the model of intergrated circuit, the 2nd pin of time base circuit IC1 connects the end of key switch AN and an end of resistance R 2, the anodal VCC of the other end connection circuit of resistance R 2, the other end connection circuit ground GND of key switch AN;
Mono-stable timing circuit: it is comprised of time base circuit IC1, resistance R 3 and electrochemical capacitor C3, the end of the 6th pin of time base circuit IC1 and the 7th pin connecting resistance R3 and the positive pole of electrochemical capacitor C3, the anodal VCC of the other end connection circuit of resistance R 3, the 1st pin connection circuit ground GND of the negative pole of electrochemical capacitor C3 and time base circuit IC1, the anodal VCC of the 4th pin of time base circuit IC1 and the 8th pin connection circuit;
Ventilating fan motor speed adjusting circuit: it is comprised of bidirectional triode thyristor SCR, potentiometer RP, ventilating fan motor M, the 3rd pin of time base circuit IC1 connects an end and the movable arm thereof of potentiometer RP, the control utmost point of another termination bidirectional triode thyristor SCR of potentiometer RP, the first anode T1 of bidirectional triode thyristor SCR connects the end of ventilating fan motor M, the live wire end L of another termination 220V Ac of ventilating fan motor M, the second plate T2 connection circuit ground GND of bidirectional triode thyristor SCR;
18V D.C. regulated power supply positive pole links to each other with circuit anode VCC, and the zero line side N of 18V D.C. regulated power supply negative pole and 220V Ac links to each other with circuit ground GND.
The circuit working principle: timing variable-speed ventilating fan of the present invention partly is comprised of half-wave rectifying circuit, 18V D.C. regulated power supply, starting circuit, mono-stable timing circuit and ventilating fan electromotor control circuit.Behind the key switch AN in pressing starting circuit, make the 2nd pin moment of time base circuit IC1 be low level, the 3rd pin of time base circuit IC1 is exported high level immediately, high level is by the adjusting of potentiometer RP, obtain different trigger voltages, trigger bidirectional triode thyristor SCR and make its conducting, ventilating fan motor M obtains different rotating speeds, and the rotating speed of ventilating fan motor M changes along with the height of trigger voltage.The 18V DC electrical source of control circuit work by the 220V Ac through capacitor C 1 step-down, silicon rectifier diode D1 rectification, reference diode DW voltage stabilizing and after electrochemical capacitor C2 filtering, obtain.In the time of ventilating fan motor M work, the 18V DC electrical source is charged through electrochemical capacitor C3 through resistance R 3, when electrochemical capacitor C3 both end voltage reaches 2/3 supply voltage, the 3rd pin of time base circuit IC1 returns low level, bidirectional triode thyristor SCR triggerless voltage and being turned off, ventilating fan motor M quits work, and and then electrochemical capacitor C3 institute charging voltage so circulates rapidly by time base circuit IC1 internal discharge tube discharge.Whenever press key switch AN once, ventilating fan motor M meeting automatic operation 18～20 minutes.
Description of drawings
Accompanying drawing 1 is to the invention provides regularly embodiment's circuit working schematic diagram of variable-speed ventilating fan.
Embodiment
The below is accompanying drawing 1 and description of drawings to specifications, with the following Examples correlation technique of the present invention is further described.
The selection of components and parts and parameter request
Components and parts title and important technological parameters
| Element number haoHAO number | The components and parts title | Technical parameter | Quantity | Explanation |
| IC1 | Time base circuit | DIP encapsulation, 8 |
1 | Model: NE555 |
| D1 | Silicon rectifier diode | Plastic packaging, 1A/ |
1 | Model: IN4007 |
| DW | Reference diode | 100mA/ |
1 | ? |
| SCR | Bidirectional triode thyristor | 1A/ |
1 | ? |
| R1 | Resistance | 680KΩ、1W、 | 1 | Metal film resister |
| R2 | Resistance | 1/8W、 |
1 | Metal film resister |
| R3 | Resistance | 1/8W、1.5 |
1 | Metal film resister |
| RP | Potentiometer | 51～8KΩ、 |
1 | Linear |
| C1 | Electric capacity of the dacron | 0.1μF/ |
1 | Vertical |
| C2、C3 | Electrochemical capacitor | 470μF/ |
2 | Vertical |
| AN | Key switch | Open in usual | 1 | ? |
Circuit production main points and circuit debugging
1. the circuit working schematic diagram in the accompanying drawing 1 to specifications, all annexation and the welding quality of components and parts in the conscientious check circuit, through affirmation errorless after, circuit need not to debug and can work;
2. the ventilating fan motor M that accesses in the circuit of the present invention requires its power≤60W;
3. the capacity that suitably increases the resistance of resistance R 3 or strengthen electrochemical capacitor C3 can prolong the operating time of ventilating fan motor M, but the resistance of resistance R 3 can not be greater than 1.8M Ω, otherwise can have influence on the reliable upset of monostable circuit;
4. after pressing one-touch switch AN, about 18～20 minutes of ventilating fan motor M operating time, after the ventilating fan motor M operating time arrived, the monostable time delay circuit will cut off the working power of ventilating fan motor M automatically; If the operating time of ventilating fan motor M is inadequate, can press again one-touch switch AN.
Claims (1)
1. variable-speed ventilating fan regularly, it comprises 220V Ac, half-wave rectifying circuit, 18V D.C. regulated power supply, starting circuit, mono-stable timing circuit, ventilating fan motor speed adjusting circuit, it is characterized in that:
Described starting circuit is comprised of time base circuit IC1, resistance R 2, key switch AN, it is NE555 that time base circuit IC1 selects the model of intergrated circuit, the 2nd pin of time base circuit IC1 connects the end of key switch AN and an end of resistance R 2, the anodal VCC of the other end connection circuit of resistance R 2, the other end connection circuit ground GND of key switch AN;
Described mono-stable timing circuit is comprised of time base circuit IC1, resistance R 3 and electrochemical capacitor C3, the end of the 6th pin of time base circuit IC1 and the 7th pin connecting resistance R3 and the positive pole of electrochemical capacitor C3, the anodal VCC of the other end connection circuit of resistance R 3, the 1st pin connection circuit ground GND of the negative pole of electrochemical capacitor C3 and time base circuit IC1, the anodal VCC of the 4th pin of time base circuit IC1 and the 8th pin connection circuit;
Described ventilating fan motor speed adjusting circuit is comprised of bidirectional triode thyristor SCR, potentiometer RP, ventilating fan motor M, the 3rd pin of time base circuit IC1 connects an end and the movable arm thereof of potentiometer RP, the control utmost point of another termination bidirectional triode thyristor SCR of potentiometer RP, the first anode T1 of bidirectional triode thyristor SCR connects the end of ventilating fan motor M, the live wire end L of another termination 220V Ac of ventilating fan motor M, the second plate T2 connection circuit ground GND of bidirectional triode thyristor SCR;
Described 18V D.C. regulated power supply positive pole links to each other with circuit anode VCC, and the zero line side N of 18V D.C. regulated power supply negative pole and 220V Ac links to each other with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310005517 CN103047164A (en) | 2013-01-08 | 2013-01-08 | Adjustable speed timing exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310005517 CN103047164A (en) | 2013-01-08 | 2013-01-08 | Adjustable speed timing exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047164A true CN103047164A (en) | 2013-04-17 |
Family
ID=48059946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310005517 Withdrawn CN103047164A (en) | 2013-01-08 | 2013-01-08 | Adjustable speed timing exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103047164A (en) |
-
2013
- 2013-01-08 CN CN 201310005517 patent/CN103047164A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20130417 |