CN87200806U - Automatic speed-regulating device for electric fan - Google Patents
Automatic speed-regulating device for electric fan Download PDFInfo
- Publication number
- CN87200806U CN87200806U CN 87200806 CN87200806U CN87200806U CN 87200806 U CN87200806 U CN 87200806U CN 87200806 CN87200806 CN 87200806 CN 87200806 U CN87200806 U CN 87200806U CN 87200806 U CN87200806 U CN 87200806U
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- CN
- China
- Prior art keywords
- resistance
- electric
- automatic speed
- temperature
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Abstract
The utility model relates to an automatic speed-regulating device for an electric fan, adopting a silicon controlled voltage regulating circuit to control the rotating speed of the fan. A variable resistance for controlling a silicon controlled conducting angle in the triggering circuit of the device is composed of a mercury thermometer having a plurality of electric contacts and a plurality of resistances corresponding to the mercury thermometer and connected together in series, and each electric contact corresponds to one temperature and is connected with the corresponding resistance. When the temperature of the environment is changed, the corresponding resistances are shortly connected through the electric contacts, and the resistance value of the variable resistance is changed, and therefore, the automatic speed-regulating device realizes the temperature controlled automatic speed regulating.
Description
The utility model relates to a kind of motor speed control device, specifically a kind of automatic speed governing device of electric fan.
When using fan, people normally select certain rotating speed according to room temperature high and low.Adopt various forms of manual multistep speed regulations and general electric fan, being limited in scope of its speed governing.A kind of arrangements for speed regulation that can be used for fan electromotor are arranged, adopt the silicon-controlled voltage regulation circuit, in triggering the loop, regulate the silicon controlled angle of flow, thereby can in a big way, realize stepless speed regulation with variable resistor.But when using above-mentioned these arrangements for speed regulation, the rotating speed of fan need give first setting, and manual tune can not automatically adjust according to the temperature variation of environment.
Task of the present utility model is to overcome above-mentioned deficiency of the prior art and a kind of electric fan automatic speed governing device that can carry out automatic speed regulation according to variation of ambient temperature is provided.
Task of the present utility model realizes by following approach.The automatic speed governing device of electric fan adopts the silicon-controlled voltage regulation circuit, trigger in the loop and regulate the silicon controlled angle of flow with variable resistor, this variable resistor by have a plurality of be electrically connected a little mercury thermometer and form with the corresponding a plurality of resistance that are cascaded of aforementioned electric contact.Wherein each electric contact is corresponding to a temperature, and the Outlet of each electric contact is connected with aforementioned corresponding each resistance successively.In the temperature range that needs ventilate, the mercury column rising that temperature rises and causes mercury thermometer, the electric contact of correspondence is connected, meanwhile, the corresponding with it resistance of in the aforementioned series resistors some is by short circuit, and variable-resistance resistance changes, and the silicon controlled angle of flow changes, thereby the rotating speed of fan is changed, reach the purpose of automatic speed regulation with variation of ambient temperature.
Below in conjunction with accompanying drawing content of the present utility model is described in detail.
Fig. 1 is the utility model embodiment's a schematic diagram.
Fig. 2 is the partial view of electric contact mercury thermometer.
As shown in Figure 1, this device adopts bidirectional triode thyristor 1 to make control unit, and fan electromotor 14 is load, constitutes major loop.Trigger the loop and be made up of bidirectional trigger diode 2, current-limiting resistance 3, electric capacity 4, resistance 5, the mercury thermometer 6 with 6 electric contacts and resistance 7, wherein resistance 5, resistance 7 and electric capacity 4 are formed phase-shift network.Each electric contact of mercury thermometer 6 is made by platinum filament or other conduction good metal silks, and inserts the inner chamber of mercury thermometer 6.Electric contact 61,62,63,64,65 and 66 position correspond respectively to the groove of 25 ℃, 27 ℃, 29 ℃, 31 ℃, 33 ℃ and 35 ℃, and extraction pole 67 is positioned at 25 ℃ of grooves following (as shown in Figure 2).The Outlet of electric contact 61 is connected on an end of resistance 71, and the Outlet of electric contact 62 is connected on the common point between the resistance 71,72, analogizes for surplus time.Therefore, connect different electric contacts, can change the resistance at resistance 7 two ends.The working procedure of this device is such.Close a switch 15, when temperature was lower than 25 ℃, electric contact 61 did not contact with mercury column, triggered the loop and disconnected, and controllable silicon 1 is in off state, and fan electromotor does not change.When temperature rose to 25 ℃, mercury column contacted with electric contact 61, triggered the loop and was switched on, and electric capacity 4 chargings make controllable silicon 1 triggering and conducting by bidirectional trigger diode 2, fan electromotor 14 rotations.Regulate the resistance at resistance 7 two ends, i.e. the angle of flow of can regulate controllable silicon 1, thus reach the purpose of regulating rotation speed of the fan.When temperature was 25 ℃, electric contact 61 was switched on, the resistance maximum at resistance 7 two ends, and the angle of flow of controllable silicon 1 is minimum, rotation speed of the fan is minimum.When temperature rises to 27 ℃, electric contact 61,62 is switched on, resistance 71 is by short circuit, and the resistance at resistance 7 two ends reduces, and the angle of flow of controllable silicon 1 increases, rotation speed of the fan increases, when temperature rose to 35 ℃, each electric contact was all connected, and resistance 71～75 is all by short circuit, the angle of flow of controllable silicon 1 is maximum, and it is the highest that rotation speed of the fan reaches.
Temperature control automatic speed regulation and manually stepless speed regulation can be realized by throw over switch 8 potentiometers 9 in parallel in two ends at resistance 7 in this device.Resistance 12 in this device and light emitting diode 13 are used for on/off and show, electric capacity 10 and inductance 11 are formed low-pass filter, are used to suppress radio frequency interference.
The utility model has the advantages that simple in structurely, cost is low, and rotation speed of the fan can be regulated automatically with the variation of environment temperature, and mercurial thermometer can double as again the usefulness of temperature demonstration simultaneously.
Claims (1)
1, a kind of automatic speed governing device of electric fan, has a silicon-controlled voltage regulation circuit, in silicon controlled triggering loop, a variable resistor that is used for regulating thyristor operating angle is arranged, it is characterized in that said variable resistor forms by the mercury thermometer with a plurality of electric contacts with the corresponding a plurality of resistance that are cascaded of aforementioned electric contact, wherein each electric contact is corresponding to a temperature, and the Outlet of each electric contact is connected with aforementioned corresponding each resistance successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87200806 CN87200806U (en) | 1987-01-23 | 1987-01-23 | Automatic speed-regulating device for electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87200806 CN87200806U (en) | 1987-01-23 | 1987-01-23 | Automatic speed-regulating device for electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87200806U true CN87200806U (en) | 1987-10-21 |
Family
ID=4817178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87200806 Ceased CN87200806U (en) | 1987-01-23 | 1987-01-23 | Automatic speed-regulating device for electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87200806U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737345B (en) * | 2008-11-04 | 2013-05-29 | 建准电机工业股份有限公司 | Small-sized heat radiating fan |
| CN105021764A (en) * | 2015-07-28 | 2015-11-04 | 南京理工大学 | Circuit for measuring combustion speed of solid propellant and measurement method thereof |
| CN109595185A (en) * | 2018-12-03 | 2019-04-09 | 湖北工业大学 | A kind of novel household cooling device of the man-machine interconnection of intelligence |
| CN113339306A (en) * | 2020-06-30 | 2021-09-03 | 鲍晨怡 | Intelligent fan capable of adaptively adjusting wind speed gear according to ambient temperature |
| CN113339308A (en) * | 2020-06-30 | 2021-09-03 | 鲍晨怡 | Digital display gear automatic regulating device of self-adaptive intelligent fan |
-
1987
- 1987-01-23 CN CN 87200806 patent/CN87200806U/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737345B (en) * | 2008-11-04 | 2013-05-29 | 建准电机工业股份有限公司 | Small-sized heat radiating fan |
| CN105021764A (en) * | 2015-07-28 | 2015-11-04 | 南京理工大学 | Circuit for measuring combustion speed of solid propellant and measurement method thereof |
| CN109595185A (en) * | 2018-12-03 | 2019-04-09 | 湖北工业大学 | A kind of novel household cooling device of the man-machine interconnection of intelligence |
| CN113339306A (en) * | 2020-06-30 | 2021-09-03 | 鲍晨怡 | Intelligent fan capable of adaptively adjusting wind speed gear according to ambient temperature |
| CN113339308A (en) * | 2020-06-30 | 2021-09-03 | 鲍晨怡 | Digital display gear automatic regulating device of self-adaptive intelligent fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |