CN1592080A

CN1592080A - System for stopping fan rotation

Info

Publication number: CN1592080A
Application number: CNA031563368A
Authority: CN
Inventors: 林盟智
Original assignee: Asia Vital Components Co Ltd
Current assignee: Asia Vital Components Co Ltd
Priority date: 2003-09-04
Filing date: 2003-09-04
Publication date: 2005-03-09
Anticipated expiration: 2023-09-04
Also published as: CN1298102C

Abstract

This invention discloses a system for stopping the fan rotation including an input unit, a drive unit, a comparing unit and a control unit, in which, the input unit is connected with a signal input end for inputting signals to the drive unit and the comparing unit, the drive unit includes a driving component and a Hall component, the driving component is connected with an automatic active device to activate the face motor. The drive unit controls speed of the motor after, receiving an input signal, the comparing unit compares the input signals to generate a suction signal to control the Hall component of the drive unit to stop working and the control unit generates a control signal to control the active device to keep at a voltage and stops the motor rotating.

Description

The system that fan stops operating

Technical field

The present invention relates to the system that a kind of fan stops operating, it is particularly a kind of when input signal is low level, the system that fan motor is stopped operating fully.

Background technology

Fig. 1 is general known fan circuit device; as shown in the figure; include the contrary protection diode 101 of pressing; Hall subassembly 102; driven unit 103; the first transistor 104; transistor seconds 105; first resistance 106; second resistance 107; the 3rd resistance 108 and the first motor winding 109; the second motor winding 120; the 4th resistance 121; and the 3rd transistor 122; this Hall subassembly 102 wherein; driven unit 103; the first transistor 104; transistor seconds 105; first resistance 106; second resistance 107; the 3rd resistance 108 and the first motor winding 109; the second motor winding 120 is to form drive circuit 10; one pulse-width signal input PWM connects the control input end ST of driven unit 103 through the 4th resistance 121 and the 3rd transistor 122; by the pulse-width signal height; low level changes; control Driver Circuit 10 produces the switch start; to control the first motor winding 109; the power of the second motor winding 120, and then the rotation speed change of control fan motor.

But it is by the height of pulse-width signal, low level control velocity of rotation, fan motor produces maximum speed when pulse-width signal is high level, and pulse-width signal produces minimum speed during for low level, the rotating speed enterprise that uses the control fan motor reaches radiating effect, because of its driven unit 103 inner setting according to the height of pulse-width signal, low level produces relative maximum speed and minimum speed, make that fan motor is still kept slow-speed of revolution rotation when input signal is low level, yet this fan motor is made flowing mode owing to the waste that can't stop fully causing power supply meaningless, make the real genus of its power saving effect limited, and because of fan motor makes noise content increase in lasting slowly running, its useful life is lowered in the rotation that continues because of fan motor simultaneously.

In addition, the highest and the minimum speed value of fan motor is along with the pulse-width signal height, the low level change, and driven unit 103 does not have setting in advance, make that fan motor stops operating when input signal is low level, but the CT pin position of its driven unit 103 connects a capacitor 123, and this capacitor 123 begins charging to activate fan motor when fan stops operating, but fan motor is along with the height of capacitor 123 chargings, low level and wink change, stop to cause jitter phenomenon wink, the activating reaction ability in the not only useful life of loss fan motor, and fan motor also reduces greatly.

Summary of the invention

Main purpose of the present invention provides the system that a kind of fan stops operating, wherein comparing unit receiving inputted signal and quit work so that fan motor stops operating according to the Hall subassembly of the high and low level control drive unit of input signal.

Another secondary objective of the present invention provides the system that a kind of fan stops operating, wherein whether control unit is set up the automatic activator appliance that produces a control signal control drive unit according to the suction signal of comparing unit and is kept a level and decide voltage, stops to shake with the control fan motor.

Another secondary objective of the present invention provides the system that a kind of fan stops operating, and fan motor is stopped operating fully, expends so that can effectively save power supply, and noiselessness is produced and prolongs fan useful life.

Above-mentioned purpose of the present invention is achieved in that the system that a kind of fan stops operating, and comprising: input unit connects a signal input part, for the input signal input; Driver element, according to the input signal control fan motor rotating speed of input unit, it comprises a driven unit and a Hall subassembly, and this driven unit connects an automatic activator appliance to activate fan motor; Comparing unit is used for input signal high and low of comparison input unit, produces a Hall subassembly that sucks the signal controlling driver element and quits work; Control unit, the suction signal that produces according to comparing unit produces control signal, and the automatic activator appliance of controlling and driving assembly quits work so that fan motor stops shake; Provide input signal input driver element and comparing unit by input unit, making comparing unit produce one according to the high and low level of input signal sucks signal and quits work with the Hall subassembly of control drive unit, and make control unit produce that a control signal controls that automatic activator appliance quits work so that fan motor stops shake, thereby fan motor is stopped operating fully.

Characteristic on above-mentioned purpose of the present invention and structure thereof and the function will be illustrated according to accompanying drawing and preferred embodiment.

Description of drawings

Fig. 1 is known fan circuit manipulated or operated apparatus;

Fig. 2 is the circuit block diagram of the present invention's first preferred embodiment;

Fig. 3 is the circuit diagram of the present invention's first preferred embodiment;

Fig. 4 is the circuit diagram of the present invention's second preferred embodiment.

Description of reference numerals: 11 input units; 111 input circuits; 112 integrating circuit; 12 driver elements; 121 driven units; 122 Hall subassemblies; 1221 Hall subassemblies, the first pin position; 1222 Hall subassembly crus secunda positions; 1223 Hall subassembly tripod positions; 1224 Hall subassemblies the 4th pin position; 13 comparing units; 131 comparators; 1311 comparators, the first pin position; 1312 comparator crus secunda positions; 1313 comparator tripod positions; 1314 comparators the 4th pin position; 1315 comparators the 5th pin position; 14 control units; R1 resistance; R2 resistance; R3 resistance; R4 resistance; R5 resistance; R6 resistance; R7 resistance; R8 resistance; R9 resistance; R10 resistance; R11 resistance; R12 resistance; R13 resistance; R14 resistance; R15 resistance; R16 resistance; R17 resistance; R18 resistance; R19 resistance; R22 resistance; R23 resistance; The Q1 transistor; The Q2 transistor; The Q3 transistor; The Q4 transistor; C3 electric capacity; C4 electric capacity; C5 electric capacity; C8 electric capacity; C9 electric capacity; The D1 diode; The D2 diode; L3 motor inductance; L4 motor inductance; HALL+ water conservancy diversion circuit; OUT1 first output; OUT2 second output; H+ Hall positive voltage; H-Hall negative voltage; The Vref reference voltage.

Embodiment

The invention provides the system that a kind of fan stops operating, Fig. 2 shows the start calcspar of the present invention's first preferred embodiment, as shown in the figure, it consists predominantly of an input unit 11, a comparing unit 13, a driver element 12, a control unit 14, and wherein this input unit 11 is to connect a signal input part IP for the input signal input; This driver element 12 is according to the input signal control fan motor rotating speed of input unit 11; This comparing unit 13 is the high and low accurate position of the input signal of input unit 11 relatively, produces a suction signal controlling fan motor and stops start; Fan motor after the suction signal controlling that this control unit 14 produces according to comparing unit 13 stops stops shake.

Fig. 3 is the circuit diagram of the present invention's first preferred embodiment, as shown in the figure, input unit 11 comprises an input circuit 111 and an integrating circuit 112, wherein this input circuit 111 includes resistance R 1, R2, R3, R4, R5, transistor Q1, Q2 and connects a signal input part IP, and this integrating circuit 112 comprises resistance R 6, R7, R8, R9, R10, R11 and capacitor C 3, C4, C5; Driver element 12 comprises driven unit 121, Hall subassembly 122, motor inductance L 3, L4; Comparing unit 13 is comparator circuits, comprises resistance R 12, R13, R14 and a comparator 131; Control unit 14 is control circuits, comprises resistance R 15, R16, R17, R18, R19 and capacitor C 9 and transistor Q3, Q4 and a diode D2.

Wherein this input circuit 111 connects the comparator 131 of integrating circuit 112 and comparing unit 13 through after the resistance R 5, and this integrating circuit 112 connects the RMI and the VTH pin position of the driven unit 121 of driver element 12 again; Motor inductance L 3, L4 are connected to driven unit 121 first output OUT1, the second output OUT2; One input power supply is connected in the Vcc pin position of driven unit 121; One automatic activator appliance connects the CT pin position of driven unit 121, it is in order to activate fan motor, and this automatic activator appliance is a capacitor C 8, one Hall subassembly 122 its first, tripod position 1221,1223 connect resistance R 22 and ground connection respectively, the second and the 4th pin position 1222,1224 are connected to the IN+ of driven unit 121, IN-pin position, connect the four pin position 1314 of a water conservancy diversion circuit HALL+ by Hall subassembly 122 first pin positions 1221 again to the comparator 131 of comparing unit 13, and the comparator 131 tripod positions 1313 of this comparing unit 13 connect resistance R 12, R13, R14, and its second, five pin positions 1312,1315 difference ground connection and power supply V+, be connected to control circuit 14 by comparator the 4th pin position 1314 again, and this control circuit 14 is connected to the CT pin position of driven unit 121 again via diode D2.

When power supply inputs to circuit so that input unit 11 via the contrary diode D1 that presses, comparing unit 13, driver element 12, during control unit 14 work, and when input signal is pulse-width signal, through the resistance R 1 of this signal by input circuit 111, R2, R3, R4 and transistor Q1, Q2, input to the comparator 131 of integrating circuit 112 and comparing unit 13 again via resistance R 5, and pulse-width signal converts RMI and the VTH pin position that analog voltage signal inputs to driven unit 121 to via integrating circuit 112, so that driven unit 121 produces drive signal via the first output pin position OUT1 and second output pin position OUT2 output, order about motor inductance L 3, L4 hands over mutually excitatory and then fan motor is rotated, this moment, Hall subassembly 122 provided certain electric current to Hall subassembly 122 through resistance R 22, so that Hall subassembly 122 induced fields change electric wave, and output Hall positive voltage H+ and negative voltage H-input to driven unit IN+, IN-pin position, and the comparator 131 comparison pulse-width signals of this comparing unit 13 reach via resistance R 12, R13, the reference voltage Vref that the R14 dividing potential drop produces.

The fan motor rotating speed changes along with work period (duty cycle) ratio of pulse-width signal when the work period of pulse-width signal, (duty cycle) was high, and when the work period of pulse-width signal (duty cycle) low (0%), comparator 131 produces a suction signal after comparing pulse-width signal and reference voltage Vref, with behind the deciding electric current and flow to comparator 131 the 4th pin position 1314 of resistance R 22 via water conservancy diversion circuit HALL+, derive over the ground via comparator 131 crus secunda positions 1312 again, and because of deciding the electric current Hall subassembly 122 of not flowing through, make Hall subassembly 122 can not produce start and then fan motor is stopped operating, can not only save power supply and noiselessness produces, simultaneously the transistor Q3 of control unit 14 does not make not conducting of transistor Q3 because of base stage has power supply, flowing to transistor Q4 via the electric current of resistance R 16 makes after the transistor Q4 conducting, produce CT pin position that a control voltage exports driven unit 121 to via diode D2 and make and keep capacitor C 8 surely the voltage of deciding of position stops start, prevent the height of capacitor C 8 because of charging, low level causes the shake of fan motor.

Please consult Fig. 4 again, it is the present invention's second preferred embodiment, include an input unit 11, a comparing unit 13, a driver element 12, a control unit 14, be with the difference of first embodiment: the input circuit 111 of input unit 11 is made up of resistance R 1, R5, R23, when input signal is a direct current voltage signal, this d. c. voltage signal is via resistance R 1, R23, input to integrating circuit 112 and comparing unit 13 through resistance R 5 again, to control the generation that fan motor stops operating and prevent the fan motor shake after fan motor stops operating.

Only the above only is preferable feasible embodiment of the present invention, and the variation that above-mentioned method, shape, structure, the device of all the present invention of utilization done all should be contained within the protection range of the present utility model.

Claims

1, the system that stops operating of a kind of fan comprises:

Input unit connects a signal input part, for the input signal input;

Driver element, according to the input signal control fan motor rotating speed of input unit, it comprises a driven unit and a Hall subassembly, and this driven unit connects an automatic activator appliance to activate fan motor;

Comparing unit is used for input signal high and low of comparison input unit, produces a Hall subassembly that sucks the signal controlling driver element and quits work;

Control unit, the suction signal that produces according to comparing unit produces control signal, and the automatic activator appliance of controlling and driving assembly quits work so that fan motor stops shake;

Provide input signal input driver element and comparing unit by input unit, making comparing unit produce one according to the high and low level of input signal sucks signal and quits work with the Hall subassembly of control drive unit, and make control unit produce that a control signal controls that automatic activator appliance quits work so that fan motor stops shake, thereby fan motor is stopped operating fully.

2, the system that stops operating of fan as claimed in claim 1, wherein this input unit comprises an input circuit, and this input circuit connects an integrating circuit, connects the driven unit of driver element again by integrating circuit.

3, the system that stops operating of fan as claimed in claim 1, wherein this input signal is a pulse-width signal.

4, the system that stops operating of fan as claimed in claim 1, wherein this input signal is a d. c. voltage signal.

5, the system that stops operating of fan as claimed in claim 1, wherein this automatic activator appliance is a capacitor.

6, the system that stops operating of fan as claimed in claim 1, wherein this comparing unit is a comparator circuit, to receive the input signal of input unit.

7, the system that stops operating of fan as claimed in claim 6, wherein this comparator circuit comprises three resistors and a comparator.

8, the system that stops operating of fan as claimed in claim 1, wherein this control unit is a control circuit.

9, the system that stops operating of fan as claimed in claim 8, wherein this control circuit comprises five resistors, a capacitor, a diode and two transistor.