CN102720685A - Timing type exhaust fan - Google Patents
Timing type exhaust fan Download PDFInfo
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- CN102720685A CN102720685A CN2012102445369A CN201210244536A CN102720685A CN 102720685 A CN102720685 A CN 102720685A CN 2012102445369 A CN2012102445369 A CN 2012102445369A CN 201210244536 A CN201210244536 A CN 201210244536A CN 102720685 A CN102720685 A CN 102720685A
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- ventilating fan
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Abstract
The invention discloses a timing type exhaust fan. The timing type exhaust fan consists of a 220V alternating current half-wave rectifying circuit, a 14V direct-current stabilized voltage supply, a starting circuit, a single-stationary delay circuit and an exhaust fan motor control circuit. The timing type exhaust fan is characterized in that the model number of a time base circuit IC1 adopted in the monostable delay circuit is NE555. The common characteristic of various exhaust fans in the market is that the work of the exhaust fan needs to be controlled manually; the electric power is wasted and the exhaust fan is easy to be overheated to burn out a motor due to long-term work in case that the exhaust fan is not powered off, and the potential safety hazard of fire disaster is hidden. According to the timing type exhaust fan disclosed by the invention, when a room is ventilated, after a key switch AN is pressed once, the motor M of the exhaust fan begins to work; when the ventilation time achieves 12-15 minutes, a timing circuit automatically cuts off the power of the motor M of the exhaust fan; and therefore, unnecessary power waste is effectively prevented, and the motor of the exhaust fan is effectively protected from being burnt out due to overheat.
Description
Technical field
The invention 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 keep in mind constantly and close.In case in time do not close the power supply of ventilating fan, both wasted electric power, also make ventilating fan because of the overheated motor that burns out that works long hours easily, and be the potential safety hazard of having buried of fire.Practice through the maintenance ventilating fan shows: motor load is too heavy to be burnt out except that the fan greasy dirt causes too much in the damage of ventilating fan, and also having quite a few is to burn out because the ventilating fan motor works long hours overheated.
When timing type ventilating fan of the present invention need 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 not enough, can let ventilating fan restart work once.
It is simple that timing type ventilating fan of the present invention has a circuit, all uses common components and parts, and fabricating cost only needs tens yuan, is well suited for exploitation in batches, also is suitable for the novel exhaust fan that factory's exploitation has timing function.
Below specify timing type ventilating fan of the present invention related relevant technologies content in implementation process.
Summary of the invention
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 be taken a breath, open ventilating fan by its work after, must keep in mind constantly and close.In case in time do not close the power supply of ventilating fan, both wasted electric power, also make ventilating fan because of the overheated motor that burns out that works long hours easily, and buried potential safety hazard for breaking out of fire.When timing type ventilating fan of the present invention need 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 of the present invention has a circuit, all uses common components and parts, and fabricating cost only needs tens yuan, is well suited for exploitation in batches, also is suitable for the novel exhaust fan that factory's exploitation has timing function.
The circuit working principle: timing type ventilating fan of the present invention partly is made up 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; Through electrochemical capacitor C3 charging, when electrochemical capacitor C3 voltage reached 2/3 supply voltage, the 3rd pin of time base circuit IC1 turned back to low level to DC electrical source through resistance R 2; 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 inner electric discharge lamp of time base circuit IC1, so circulation.Whenever press key switch AN once, the ventilating fan motor M will be worked about 12～15 minutes automatically.
Technical characteristics: timing type ventilating fan, it is made up 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 characteristic comprises:
Starting circuit: be made up 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: form 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 for use; 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: form 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 through 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
Accompanying drawing 1 and description of drawings are to specifications done further to describe to correlation technique of the present invention in conjunction with 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 | | 2CW21H | 1 | 70mA/14V | |
| SCR | Bidirectional triode thyristor | 1A/ |
1 | ||
| | Resistance | 1/8W、 |
1 | Metal film | |
| R2 | Resistance | ||||
| 1/8W、 |
1 | Metal film resister | |||
| R3 | Resistance | 1/8W、3.6 |
1 | Metal film resister | |
| 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
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 to debug and gets final product proper functioning;
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 is inserted in the circuit of the present invention 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 not enough, can let ventilating fan restart work once.
Claims (2)
1. type ventilating fan regularly, it is made up 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 characteristic comprises:
Starting circuit is made up 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 made up 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 for use; 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 made up 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 through 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 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 |
|---|---|---|---|
| CN2012102445369A CN102720685A (en) | 2012-07-15 | 2012-07-15 | Timing type exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102445369A CN102720685A (en) | 2012-07-15 | 2012-07-15 | Timing type exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102720685A true CN102720685A (en) | 2012-10-10 |
Family
ID=46946523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102445369A Pending CN102720685A (en) | 2012-07-15 | 2012-07-15 | Timing type exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102720685A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499649A (en) * | 2016-11-18 | 2017-03-15 | 广西大学 | A kind of energy-efficient ventilation fan |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151426A (en) * | 1977-07-14 | 1979-04-24 | Beehive International | Security timer device |
| DE3723660A1 (en) * | 1986-08-28 | 1988-03-10 | Fortschritt Veb K | System for delaying the switching on and off of a blower motor |
| CN2035530U (en) * | 1988-10-22 | 1989-04-05 | 童敏拉 | Dual switch for fan working intermittently or timely |
| CN2103858U (en) * | 1991-10-26 | 1992-05-06 | 高孝廉 | Electronic program-controller for electric fan |
| CN2556855Y (en) * | 2002-06-25 | 2003-06-18 | 王振爱 | Delay switch for exhaust fan |
| CN2744071Y (en) * | 2004-11-26 | 2005-11-30 | 谢锡满 | Circulation timing voltage regulating switch |
| CN202690494U (en) * | 2012-07-15 | 2013-01-23 | 黄勇 | Timing type exhaust fan |
-
2012
- 2012-07-15 CN CN2012102445369A patent/CN102720685A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151426A (en) * | 1977-07-14 | 1979-04-24 | Beehive International | Security timer device |
| DE3723660A1 (en) * | 1986-08-28 | 1988-03-10 | Fortschritt Veb K | System for delaying the switching on and off of a blower motor |
| CN2035530U (en) * | 1988-10-22 | 1989-04-05 | 童敏拉 | Dual switch for fan working intermittently or timely |
| CN2103858U (en) * | 1991-10-26 | 1992-05-06 | 高孝廉 | Electronic program-controller for electric fan |
| CN2556855Y (en) * | 2002-06-25 | 2003-06-18 | 王振爱 | Delay switch for exhaust fan |
| CN2744071Y (en) * | 2004-11-26 | 2005-11-30 | 谢锡满 | Circulation timing voltage regulating switch |
| CN202690494U (en) * | 2012-07-15 | 2013-01-23 | 黄勇 | Timing type exhaust fan |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499649A (en) * | 2016-11-18 | 2017-03-15 | 广西大学 | A kind of energy-efficient ventilation fan |
| CN106499649B (en) * | 2016-11-18 | 2019-05-28 | 广西大学 | A kind of energy-efficient ventilation fan |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20121010 |