CN202690494U - Timing type exhaust fan - Google Patents
Timing type exhaust fan Download PDFInfo
- Publication number
- CN202690494U CN202690494U CN 201220341604 CN201220341604U CN202690494U CN 202690494 U CN202690494 U CN 202690494U CN 201220341604 CN201220341604 CN 201220341604 CN 201220341604 U CN201220341604 U CN 201220341604U CN 202690494 U CN202690494 U CN 202690494U
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- circuit
- exhaust fan
- ventilating fan
- resistance
- time base
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Abstract
The utility model discloses a timing type exhaust fan. The timing type exhaust fan is composed of a 220 V alternating current, a half-wave rectifying circuit, a 14 V direct current regulated power supply, a start circuit, a monostable time delay circuit, and an exhaust fan motor control circuit, and the timing type exhaust fan is characterized in that the type selected by a time base circuit IC1 (integrated circuit 1) in the monostable time delay circuit is NE 555. The common characteristics of different exhaust fans on a market are that whether the operation of exhaust fan is necessary to be controlled manually or not, once, a power supply of the exhaust fan is closed in time, the electric power is waste, the motor is easy to burn out due to the exhaust fan superheat because of long-time operation, and so that the potential safety hazard is buried for a fire hazard. The timing type exhaust fan provided by the utility model has the advantages that when the chamber changes air, a primary key switch AN(access network) is pressed, and an exhaust fan motor M starts to work; and when the air change time achieves 12-15 minutes, a timing circuit automatically cuts a power supply of the exhaust fan motor M, unnecessary electric power waste is effectively avoided, and the exhaust fan motor is effectively protected from being burn out due to superheat.
Description
Technical field
The utility model belongs to electronic technology and air-conditioning technique field, particularly a kind of timing type ventilating fan.
Background technique
The common feature of various model ventilating fans is on the market: whether the work of ventilating fan must manual control.When room or the ventilation of airtight space requirement, open ventilating fan by its work after, must constantly keep in mind and close.In case in time do not close the power supply of ventilating fan, both wasted electric power, also easily make ventilating fan because of the overheated motor that burns out that works long hours, and be the potential safety hazard of having buried of fire.Practice by the maintenance ventilating fan shows: the damage of ventilating fan causes motor load too heavily to be burned except the fan greasy dirt too much, and also having quite a few is to burn out because the ventilating fan motor works long hours overheated.
When timing type ventilating fan described in the utility model need to be taken a breath in the room, press one-touch switch AN after, the ventilating fan motor M is started working; When time of exchanging gas reaches 12～15 minutes, time circuit will cut off the working power of ventilating fan motor M automatically, so both can effectively stop unnecessary power wastage, has also effectively protected the ventilating fan motor can not burn out because of overheated.When if time of exchanging gas is inadequate, can allow ventilating fan restart work once.
It is simple that timing type ventilating fan described in the utility model has a circuit, all uses common components and parts, and fabricating cost only needs tens yuan, is well suited in batches exploitation, also is suitable for the Novel exhaust fan that factory's exploitation has timing function.
Below describe timing type 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 ventilating fans is on the market: whether the work of ventilating fan must manual control.When room or confined space need to be taken a breath, open ventilating fan by its work after, must constantly keep in mind and close.In case in time do not close the power supply of ventilating fan, both wasted electric power, also easily make ventilating fan because of the overheated motor that burns out that works long hours, and buried potential safety hazard for breaking out of fire.When timing type ventilating fan described in the utility model need to be taken a breath in the room, press one-touch switch AN after, the ventilating fan motor M is started working; When time of exchanging gas reaches 12～15 minutes, time circuit will cut off the working power of ventilating fan motor M automatically, so both can effectively stop unnecessary power wastage, also effectively protects the ventilating fan motor can not burn out because of overheated.It is simple that timing type ventilating fan described in the utility model has a circuit, all uses common components and parts, and fabricating cost only needs tens yuan, is well suited in batches exploitation, also is suitable for the Novel exhaust fan that factory's exploitation has timing function.
The circuit working principle: timing type ventilating fan described in the utility model partly is comprised of half-wave rectifying circuit, 14V D.C. regulated power supply starting circuit, delay circuit and ventilating fan circuit for controlling motor.Utilize key switch as starting circuit.After pressing key switch AN, 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, the bidirectional triode thyristor SCR conducting that is triggered, the ventilating fan motor M is started working.The operating voltage of delay control circuit by the 220V Ac through C1 step-down, silicon rectifier diode D1 rectification, DW voltage stabilizing and after electrochemical capacitor C2 filtering, obtain.In the time of the work of ventilating fan motor M, DC electrical source is charged through electrochemical capacitor C3 through resistance R 2, when electrochemical capacitor C3 both end voltage reaches 2/3 supply voltage, the 3rd pin of time base circuit IC1 turns back to low level, bidirectional triode thyristor SCR turn-offs, the ventilating fan motor M quits work, and then electrochemical capacitor C3 institute charging voltage discharges rapidly through the electric discharge lamp of time base circuit IC1 inside, so circulation.Whenever press key switch AN once, the ventilating fan motor M will automatic operation approximately 12～15 minutes.
Technical characteristics: timing type ventilating fan, it is comprised of 220V Ac, half-wave rectifying circuit, 14V D.C. regulated power supply, starting circuit, monostable time delay circuit, ventilating fan circuit for controlling motor, and its feature comprises:
Starting circuit: be comprised of resistance R 1, key switch AN, the 2nd pin of time base circuit IC1 connects the end of key switch AN and an end of resistance R 1, the anodal VCC of the other end connection circuit of resistance R 1, the other end connection circuit ground GND of key switch AN;
Monostable time delay circuit: formed by time base circuit IC1, resistance R 2 and electrochemical capacitor C3, it is NE555 that time base circuit IC1 selects the model of intergrated circuit, the end of the 6th pin of time base circuit IC1 and the 7th pin connecting resistance R2 and the positive pole of electrochemical capacitor C3, the anodal VCC of the other end connection circuit of resistance R 2, 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 circuit for controlling motor: formed by bidirectional triode thyristor SCR, resistance R 3, ventilating fan motor M, the control utmost point of bidirectional triode thyristor SCR connects the 3rd pin of time base circuit IC1 by resistance R 3, the 1st anode T1 of bidirectional triode thyristor SCR connects an end of ventilating fan motor M, the live wire end L of another termination 220V Ac of ventilating fan motor M, the 2nd anode T2 connection circuit ground GND of bidirectional triode thyristor SCR.
The positive pole of 14V D.C. regulated power supply links to each other with circuit anode VCC, and the zero line side N of the negative pole of 14V D.C. regulated power supply and 220V Ac links to each other with circuit ground GND.
Description of drawings
Accompanying drawing 1 is regularly the circuit working schematic diagram of type ventilating fan; The 1st pin of time base circuit IC1 links to each other with circuit ground GND in the accompanying drawing 1.
Embodiment
The below is accompanying drawing 1 and description of drawings to specifications, with the following Examples correlation technique of the present utility model 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 pin | 1 | Model: NE555 |
| D1 | Silicon rectifier diode | Plastic packaging, 1A/400V | 1 | Model: IN4007 |
| DW | Reference diode | 2CW21H | 1 | 70mA/14V |
| SCR | Bidirectional triode thyristor | 1A/400V | 1 | |
| R1 | Resistance | 1/8W、20KΩ | 1 | Metal film resister |
| R2 | Resistance | 1/8W、1MΩ | 1 | Metal film resister |
| R3 | Resistance | 1/8W、3.6KΩ | 1 | Metal film resister |
| C1 | Electric capacity of the dacron | 0.1μF/450V | 1 | Vertical |
| C2、C3 | Electrochemical capacitor | 470μF/ |
2 | Vertical |
| AN | Key switch | Open in usual | 1 |
Circuit production main points and circuit debugging
The circuit working schematic diagram in the accompanying drawing 1 to specifications, in the check circuit all the welding correctness of components and parts and welding quality through affirmation errorless after, general circuit need not debugging and can work;
Increase the resistance of resistance R 2 or the capacity of increasing electrochemical capacitor C3 and can prolong the operating time of ventilating fan motor M;
Power≤60W that the ventilating fan motor M that accesses in the utility model circuit is used is advisable;
After pressing one-touch switch AN, the ventilating fan motor M is started working; When time of exchanging gas reached 12～15 minutes, time circuit will cut off the working power of ventilating fan motor M automatically; When if time of exchanging gas is inadequate, can allow ventilating fan restart work once.
Claims (2)
1. type ventilating fan regularly, it is comprised of 220V Ac, half-wave rectifying circuit, 14V D.C. regulated power supply, starting circuit, monostable time delay circuit, ventilating fan circuit for controlling motor, and its feature comprises:
Starting circuit is comprised of resistance R 1, key switch AN, and the 2nd pin of time base circuit IC1 connects the end of key switch AN and an end of resistance R 1, the anodal VCC of the other end connection circuit of resistance R 1, the other end connection circuit ground GND of key switch AN;
The monostable time delay circuit is comprised of time base circuit IC1, resistance R 2 and electrochemical capacitor C3, it is NE555 that time base circuit IC1 selects the model of intergrated circuit, the end of the 6th pin of time base circuit IC1 and the 7th pin connecting resistance R2 and the positive pole of electrochemical capacitor C3, the anodal VCC of the other end connection circuit of resistance R 2, 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;
The ventilating fan circuit for controlling motor is comprised of bidirectional triode thyristor SCR, resistance R 3, ventilating fan motor M, the control utmost point of bidirectional triode thyristor SCR connects the 3rd pin of time base circuit IC1 by resistance R 3, the 1st anode T1 of bidirectional triode thyristor SCR connects an end of ventilating fan motor M, the live wire end L of another termination 220V Ac of ventilating fan motor M, the 2nd anode T2 connection circuit ground GND of bidirectional triode thyristor SCR.
2. timing type ventilating fan according to claim 1, it is characterized in that: the positive pole of 14V D.C. regulated power supply links to each other with circuit anode VCC, and the zero line side N of the negative pole of 14V D.C. regulated power supply and 220V Ac links to each other with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220341604 CN202690494U (en) | 2012-07-15 | 2012-07-15 | Timing type exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220341604 CN202690494U (en) | 2012-07-15 | 2012-07-15 | Timing type exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690494U true CN202690494U (en) | 2013-01-23 |
Family
ID=47546120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220341604 Expired - Fee Related CN202690494U (en) | 2012-07-15 | 2012-07-15 | Timing type exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202690494U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720685A (en) * | 2012-07-15 | 2012-10-10 | 黄勇 | Timing type exhaust fan |
-
2012
- 2012-07-15 CN CN 201220341604 patent/CN202690494U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720685A (en) * | 2012-07-15 | 2012-10-10 | 黄勇 | Timing type exhaust fan |
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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: 20130123 Termination date: 20130715 |