CN203130568U - Timed speed-adjustable exhaust fan - Google Patents
Timed speed-adjustable exhaust fan Download PDFInfo
- Publication number
- CN203130568U CN203130568U CN 201320007550 CN201320007550U CN203130568U CN 203130568 U CN203130568 U CN 203130568U CN 201320007550 CN201320007550 CN 201320007550 CN 201320007550 U CN201320007550 U CN 201320007550U CN 203130568 U CN203130568 U CN 203130568U
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- circuit
- ventilating fan
- time base
- exhaust fan
- pin
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- Expired - Fee Related
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Abstract
The utility model discloses a timed speed-adjustable exhaust fan. The timed speed-adjustable exhaust fan is characterized by comprising a 220V alternating current (AC) supply, a half-wave rectifying circuit, an 18V direct current (DC) stabilized power supply, a starting circuit, a monostable timing circuit and an exhaust fan motor speed adjusting circuit, wherein the model of a time-base circuit IC1 of the monostable timing circuit is selected to be NE555. At present, various exhaust fans only have one rotating speed, and power supplies can not be turned off automatically. When a room or a toilet needs air changing, the exhaust fans can only work at full speed, and the power supplies can not be turned off automatically after the exhaust fans runs, so that if the exhaust fans work for a long time, not only is electricity wasted, but also motors are easily burnt out due to overheating caused by long-time working of the exhaust fans, and potential safety hazards are laid for fire accidents. According to the timed speed-adjustable exhaust fan, after a button switch AN is pressed for one time, the exhaust fan can work at an appropriate rotating speed, and after the exhaust fan works for 18-20min, the monostable timing circuit will automatically cut off the power supply of a motor M of the exhaust fan.
Description
Technical field
The utility model belongs to the air-conditioning technique field, relates 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 has only a kind of rotating speed, manually can not regulate the rotating speed of ventilating fan, can not close its power supply automatically.When need take a breath in room or toilet, can only allow the ventilating fan full speed operation, after ventilating fan was connected the power supply running, you must keep in mind constantly 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 described in the utility model; 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 burnt out because of overheated.
Timing variable-speed ventilating fan described in the utility model is well suited for exploitation in batches, 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 described in the utility model related relevant technologies content in implementation process in detail.
The model utility content
Goal of the invention and beneficial effect: the common feature of various model ventilating fans is on the market: ventilating fan has only a kind of rotating speed, manually can not regulate the rotating speed of ventilating fan, can not close its power supply automatically.When need take a breath in room or toilet, can only allow the ventilating fan full speed operation, after ventilating fan was connected power work, you must keep in mind constantly 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 described in the utility model; 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 made up 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 for use, 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 made up 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 made up 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 described in the utility model partly is made up 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 can work 18～20 minutes automatically.
Description of drawings
Accompanying drawing 1 is that the utility model provides regularly embodiment's circuit working schematic diagram of variable-speed ventilating fan.
Embodiment
Accompanying drawing 1 and description of drawings to specifications are further described correlation technique of the present utility model with the following Examples below.
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 | |
| R2 | Resistance | ||||
| 1/8W、 |
1 | Metal film resister | |||
| | 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 gets final product proper functioning;
2. the ventilating fan motor M that inserts in the utility model circuit 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 not enough, can press one-touch switch AN again.
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 made up 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 for use, 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 made up 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 made up 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 201320007550 CN203130568U (en) | 2013-01-08 | 2013-01-08 | Timed speed-adjustable exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320007550 CN203130568U (en) | 2013-01-08 | 2013-01-08 | Timed speed-adjustable exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130568U true CN203130568U (en) | 2013-08-14 |
Family
ID=48938549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320007550 Expired - Fee Related CN203130568U (en) | 2013-01-08 | 2013-01-08 | Timed speed-adjustable exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130568U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370611A (en) * | 2015-12-05 | 2016-03-02 | 周芸 | Gas water heater and exhaust fan linkage device |
| CN105428120A (en) * | 2015-12-11 | 2016-03-23 | 周云侠 | Direct-discharging type gas water heater and exhaust fan linkage apparatus |
-
2013
- 2013-01-08 CN CN 201320007550 patent/CN203130568U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370611A (en) * | 2015-12-05 | 2016-03-02 | 周芸 | Gas water heater and exhaust fan linkage device |
| CN105428120A (en) * | 2015-12-11 | 2016-03-23 | 周云侠 | Direct-discharging type gas water heater and exhaust fan linkage apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140108 |