CN2146084Y - Pendent fan speed governor - Google Patents

Abstract

The utility model discloses a pendent fan speed governor with breeze, gust and timing, comprising a bidirectional thyristor 3CT1, the control circuit of the bidirectional thyristor 3CT1 and a timer, wherein, the 3CT1 and the control circuit comprise a resistance-capacity phase shifting triggering, an electronic switching circuit, an adjustable break-make ratio period switch and a rectification regulation circuit and the 3CT1 is connected in series with a pendent fan motor D; the resistance-capacity phase shifting triggering output is connected with the control electrode of the 3CT1 through a trigger diode by a resistor R12; the electronic switch is composed of a bidirectional thyristor 3CT2 and a resistor R8; the period switch is composed of a time-base integrated circuit 555 and a circuit RC. The utility model has the advantages of 50-65% power saving, good low-speed performance, simple wire connection and convenient operation.

Description

Pendent fan speed governor

The utility model relates to a kind of gentle breeze, fitful wind, timing hanging fan governor, belongs to the control appliance class of AC power conversion.

Fan governor adopts iron inductance more, volume is little, big energy-consuming, the existing speed regulator that adopts controllable silicon and control circuit thereof, as the novel patent gazette of practicality on January 9th, 1991, on February 26th, 1992, September 30 90212265, No. 7,91218420, No. 5,922202528, No. 2 of bulletin, all be to adopt controllable silicon promptly to control voltage-controlled duty recently to regulate the rotating speed of electric fan and change air quantity at each cycle internal pressure-regulating.

The purpose of this utility model provide a kind of utilize the ceiling fan moment of inertia big, when ceiling-fan motor rotates under effect of inertia, the characteristic that the re-lighting electric current is less, periodically power on/off is regulated the hanging fan governor of ceiling fan rotating speed.

The purpose of this utility model realizes in the following manner, comprise bidirectional triode thyristor and control circuit thereof and timer, control circuit comprises capacitance-resistance phase shift triggering and electronic switching circuit, the cycle switch circuit of adjustable make-to-break ratio, regulator rectifier circuit, to ceiling fan power on/off periodically, voltage can be adjusted within the specific limits and produces multiple operational mode and realize adjustable gentle breeze, fitful wind control during energising.

Advantage of the present utility model is to have utilized that the ceiling fan moment of inertia is big, repeated priming electric current features of smaller, adopt periodically power delivery mode work, 50-65% can economize on electricity, it is about about 50% to be that the fitful wind operation time can be economized on electricity, and can economize on electricity about 65% during the gentle breeze operation, and low-speed performance is good, send electricity still can normally start again after having a power failure during the gentle breeze operation, gentle breeze, fitful wind operational mode and the length of running time all can freely be selected, and wiring is simple, and is easy to operate.

Embodiment of the present utility model is provided by appended accompanying drawing, accompanying drawing is its electrical schematic diagram, below in conjunction with description of drawings the utility model, with reference to accompanying drawing, circuit of the present utility model comprises bidirectional triode thyristor 3CT1 and control circuit and timer, bidirectional triode thyristor 3CT1 and ceiling fan motor D series connection, its control circuit comprises capacitance-resistance phase shift triggering and electronic switching circuit, the cycle switch of adjustable make-to-break ratio and regulator rectifier circuit, rc phase-shift trigger circuit is by resistance R 9-R11, potentiometer W2, compositions such as capacitor C5 and diac D, the output of rc phase-shift trigger circuit connects the 3CT1 control utmost point by resistance R 12 by diac D, control 3CT1 realizes AC voltage adjusting, regulate W2 and can select the used operating voltage of motor D, the last belt switch WK of W2 makes mains switch.Bidirectional triode thyristor 3CT1 is when phase shift triggers the AC voltage adjusting operating state, also will be according to the instruction of adjustable make-to-break ratio cycle switch, the power on/off of property performance period switch control motor D, motor current on time in each cycle (about 25 seconds) can be chosen between the 25-100%, produces gentle breeze operation or fitful wind (box fan) operational mode.Electronic switching circuit is made up of small-power bidirectional triode thyristor 3CT2 and resistance R 8; when the 3CT2 conducting; the C5 short circuit; 3CT1 Triggerless and turn-off major loop; time-out send to motor D; link after the control utmost point of bidirectional triode thyristor 3CT2 and the output paraphase of adjustable make-to-break ratio cycle switch; the cycle switch of adjustable make-to-break ratio comprises time-base integrated circuit 555 and RC circuit composition; the RC circuit is by resistance R 4; R5; potentiometer W1; capacitor C 4 and diode D5; D6 forms; switch periods is determined by the RC circuit; regulator potentiometer W1 can control capacitance C4 discharge and recharge the time; thereby regulate the make-to-break ratio cycle: (realizing the adjusting of 25%-100% current on time); the pin 2 of ic 555; 6 are used for triggering the control that resets; pin 7 is used for capacitor C 4 discharges; pin 3 is an output; pin 2; voltage is lower than triggering in 1/3 o'clock of DC power supply magnitude of voltage on 6; being higher than at 2/3 o'clock resets; pin 2 during the cycle switch operate as normal; voltage on 6 always the DC power supply magnitude of voltage＜change between 1/3 to 2/3; because power supply has just sent electric moment; the last voltage of C4 can not suddenly change; in first week this it is to be raised to 2/3 and just to reset from above freezing; its charging interval is than about being twice under the continuous duty; thereby gentle breeze; during the fitful wind operation; can grow the conduction time about one times during startup; thereby help to start; regulator rectifier circuit is by rectifier diode D1-D4; resistance R 1-R3; capacitor C 1-C3; voltage-stabiliser tube DW forms the capacitance-voltage-distributing type rectification; can adapt to speed regulator connects with motor D under the situation; when speed regulator voltage changes about 40-170V; DC power supply voltage is stabilized in about 10V; D2; the capacitor C 1 that is set to of D3 provides discharge loop and has improved rectification efficiency; D1 can prevent that 3CT1 from bearing overvoltage; promptly produce protective effect; the switch S K contact of timer is connected with motor D, can select fixed time interval in 0-120 minute.

Claims (2)

1, a kind of gentle breeze, fitful wind, the timing hanging fan governor, comprise bidirectional triode thyristor 3CT1 and control circuit thereof and timer, the control circuit that it is characterized in that described bidirectional triode thyristor 3CT1 comprises rc phase-shift trigger circuit and electronic switching circuit, the cycle switch of adjustable make-to-break ratio and regulator rectifier circuit, bidirectional triode thyristor 3CT1 connects with ceiling fan motor D, the output of rc phase-shift trigger circuit is connect the control utmost point of bidirectional triode thyristor 3CT1 by diac D by resistance R 12, electronic switching circuit is made up of bidirectional triode thyristor 3CT2 and resistance R 8, link after the control utmost point of bidirectional triode thyristor 3CT2 and the output paraphase of adjustable make-to-break ratio cycle switch, adjustable make-to-break ratio cycle switch is made up of time-base integrated circuit 555 and RC circuit.

2, speed regulator according to claim 1 is characterized in that described rc phase-shift trigger circuit by resistance R 9-R11, potentiometer W2, and capacitor C5 and diac are formed.Described inverter stage is made up of triode G1, the RC circuit of described adjustable make-to-break ratio cycle switch is made of resistance R 4, R5, potentiometer W1 capacitor C 4 and diode D5, D6, and regulator rectifier circuit is made up of rectifier diode D1-D4, resistance R 1-R3, capacitor C 1-C3, voltage-stabiliser tube DW.

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