CN201554658U

CN201554658U - Unidirectional pump

Info

Publication number: CN201554658U
Application number: CN2009200602250U
Authority: CN
Inventors: 邓荣星
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-10
Filing date: 2009-07-10
Publication date: 2010-08-18
Anticipated expiration: 2019-07-10

Abstract

A unidirectional pump comprises an alternating-current single-phase permanent-magnet water pump motor and a unidirectional driving circuit. The unidirectional driving circuit comprises an alternating current power supply waveform sampling circuit, a rotor magnetic field sampling circuit, a single chip microcomputer and a switching circuit, wherein the switching circuit is in series connection with a motor winding, the rotor magnetic field sampling circuit detects magnetic field signals at the stop position of a permanent magnetic rotor and inputs the signals into the single chip microcomputer when an alternating current power supply is switched on, the alternating current waveform sampling circuit inputs waveform signals into the single chip microcomputer, the single chip microcomputer actuates logic operation, a control signal is output from the operational result to a control end of the switching circuit to control on or off of the switching circuit, and the motor winding is electrified at the upper half-sinusoid or lower half-sinusoid of the power supply so as to start the alternating current single-phase permanent-magnet water pump motor to rotate according to a set rotating direction. By arranging the unidirectional driving circuit, the water pump rotates to the same direction after being started at a time so as to increase flow and efficiency and reduce energy consumption while avoiding collision or jamming of the mechanical structure when controlling the motor to rotate unidirectionally.

Description

A kind of one-way pump

Technical field:

The utility model relates to a kind of one-way pump, and this water pump can both turn round when each the startup in the same direction.

Background technique:

Used magneto water pump in used in the market interchange single-phase permanent motor and water pump, the particularly Shui nationality and the flower pond is when starting, it turns to is at random, that is to say it can is to clockwise rotate, also can be to rotate counterclockwise, therefore, its water chamber and waterleaf are to adopt symplex structure, circulation loss will inevitably be in water cavity, produced like this,, the power of motor certainly will be will increased if increase the flow and the lift of water pump, but its loss also can increase relatively, fails to reach purpose of energy saving.A kind of improving one's methods is to install unidirectional in water chamber additional, and unidirectional structure can control of pump turn round in the same direction, though this mechanical structure can reach purpose energy-conservation and that raise the efficiency, corresponding can the generation is rebuffed or stuck problem.

Summary of the invention:

The purpose of this utility model proposes a kind of one-way pump exactly, turns round in the same direction when water pump is started at every turn, can overcome again to be rebuffed or stuck problem.

For achieving the above object, a kind of one-way pump of the utility model, comprise and exchange the single-phase permanent pump motor, also comprise unidirectional drive circuit, this unidirectional drive circuit comprises: AC power waveform sample circuit, rotor field sample circuit, single-chip microcomputer and switching circuit, switching circuit and motor windings series connection;

When connecting ac power supply, the rotor field sample circuit detects the field signal of p-m rotor stop place, and with this signal input single-chip microcomputer, simultaneously, the AC power waveform sample circuit is also imported single-chip microcomputer with the waveform signal of ac power supply, single-chip microcomputer carries out logical operation according to the power supply wave shape signal and the rotor-position field signal of input, its operation result output one controls signal to the control end of switching circuit, control switch circuit turn-on or end, motor windings starts interchange single-phase permanent pump motor according to setting the sense of rotation running in sinusoidal first waveform of power supply or the energising of second waveform.

The preferred bidirectional triode thyristor of said switching circuit also can adopt relay.

The preferred Hall element of above-mentioned rotor field sample circuit.

The utility model is owing to be provided with unidirectional drive circuit, field signal according to the p-m rotor stop place, the control motor windings is at sinusoidal first waveform of power supply or in sinusoidal second waveform energising of power supply, so, when interchange single-phase permanent pump motor starts at every turn, all to the running of same direction, with this augmented flow, raise the efficiency, reduce power consumption, what produced when having avoided mechanical structure control motor one-way rotation simultaneously is rebuffed or stuck problem.

Description of drawings:

Fig. 1 is for exchanging the structural representation of single-phase permanent pump motor;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is the circuit block diagram of the utility model unidirectional drive circuit;

Fig. 4 is the circuit theory diagrams of the utility model unidirectional drive circuit.

Embodiment:

Below in conjunction with accompanying drawing the utility model embodiment is described in detail.

For understanding the utility model better, be necessary to understand that to exchange that the single-phase permanent pump motor turns to be at random reason.As shown in Figure 1, when the motor no electric circuit, the N utmost point of p-m rotor 13 or S utmost point position of rest always rest on and the shortest position of stator 14 magnetic gaps, rather than on center line, just fix and angle φ of stator 14 iron core deflections, because stator 14 iron cores were not switched on and do not formed magnetic field this moment, so the N of rotor 13, S utmost point position of rest can be the S utmost point or the N utmost point two kinds of situations that take over.This stator 14 iron cores produce magnetic field when motor windings L1, L2 switch on, impel p-m rotor 13 clockwise or inhour rotations.If p-m rotor 13 static stop places are illustrated in figure 1 as the S utmost point and take over, because the civil power of motor input is the simple alternating current waveform, when motor windings L1 input is sinusoidal wave when going up half-wave, the corresponding magnetic field that is produced is the S utmost point, what another motor windings L2 was produced is the N utmost point, because there is the cause of angle of yaw Φ in rotor 13 position of rest, the magnetic force that this magnetic field produces will impel p-m rotor 13 inhours to rotate, because the input power supply is alternation always, so this energising magnetic field also is alternation, rotor 13 phenomenon that the rotor N utmost point catches up with the stator 14 magnetic field S utmost points occurs because of inertia and magnetic gap effect after deflection, thereby rotor 13 not stalls are moved down.Otherwise when winding L 1 input was sinusoidal wave half-wave down, the corresponding magnetic field that is produced was the N utmost point, and what another motor windings L2 was produced is the S utmost point, and rotor 13 turns clockwise.It turns to reason at random when starting for interchange single-phase permanent pump motor in sum.

As Fig. 2, Fig. 3, shown in Figure 4, the utility model embodiment, comprise and exchange single-phase permanent pump motor 1, also comprise unidirectional drive circuit 2, this unidirectional drive circuit 2 comprises: AC power waveform sample circuit, rotor field sample circuit, single-chip microcomputer and switching circuit, switching circuit and motor windings L1, L2 series connection; The AC power waveform sample circuit is made up of resistance R 1 and capacitor C 3, and the rotor field sample circuit adopts Hall element 21, and switching circuit adopts bidirectional triode thyristor T1, certainly, also can adopt relay.

During connection～220V/50HZ ac power supply, Hall element 21 detects the field signal of p-m rotor 13 stop places, and with this signal input single-chip microcomputer U2, simultaneously, civil power～220V/50HZ ac power supply is sent into from input end J1J2, its waveform signal is also imported single-chip microcomputer U2 through resistance R 1, single-chip microcomputer U2 carries out logical operation according to the power supply wave shape signal and the rotor-position field signal of input, if p-m rotor 13 stop places are illustrated in figure 2 as the S utmost point when taking over, when this moment, if the power supply input just was first waveform of sine, after logical operation, can turn round according to the counterclockwise direction that sets, single-chip microcomputer U2 exports the control end of a pulse control signal to bidirectional triode thyristor T1 so, trigger end just, trigger bidirectional triode thyristor T1 conducting, make motor windings L1, L2 energising back produces magnetic field, impels p-m rotor 13 to start running.When if the power supply input just is sinusoidal wave time half-wave, single-chip microcomputer U2 is after logical operation so, judge that motor 1 can not rotate according to the counterclockwise direction that sets, bidirectional triode thyristor T1 can't obtain the Pulse-trigger control signal of single-chip microcomputer U2 output, and bidirectional triode thyristor T1 ends, but postpones 0.01 second, because of the input power supply is 50HZ, after the half waveform, after logical operation meets the steering condition of setting, export Pulse-trigger control signal triggering bidirectional triode thyristor T1 conducting again under arriving.As a same reason, if rotor 13 stop places are with shown in Figure 2 when opposite, single-chip microcomputer U2 passes through logical operation with the waveform signal of rotor 13 position field signals and input power supply, as reaches turning to of setting, can go to trigger bidirectional triode thyristor T1 conducting by output pulse signal.In a word, no matter rotor 13 magnetic fields are that the S utmost point or the N utmost point take over, Hall element 21 is always after connecting power supply, detect the rotor field is that the S utmost point or the N utmost point take at once, and carry out logical operation with power supply input waveform situation, its operation result is exported the trigger end of a Pulse-trigger control signal to bidirectional triode thyristor T1, and control bidirectional triode thyristor T1 conducting or end exchanges the single-phase permanent pump motor and starts running according to setting sense of rotation thereby make.

As shown in Figure 4, each pin of single-chip microcomputer U2 in the utility model unidirectional drive circuit schematic diagram is simply described as follows:

1. microcontroller power supply end input

2. civil power～220V/50HZ waveform sampling

3. silicon controlled trigger signal output

4. reset

5. empty pin

6. Hall HALL signal input

7. empty pin

8. ground connection

Claims

1. one-way pump, comprise exchanging the single-phase permanent pump motor, it is characterized in that, also comprise unidirectional drive circuit, this unidirectional drive circuit comprises: AC power waveform sample circuit, rotor field sample circuit, single-chip microcomputer and switching circuit, switching circuit and motor windings series connection; The rotor field sample circuit will detect the field signal input single-chip microcomputer of p-m rotor stop place, the AC power waveform sample circuit is also imported single-chip microcomputer with the waveform signal of ac power supply, single-chip microcomputer output one controls signal to the control end of switching circuit, control switch circuit turn-on or end.

2. one-way pump according to claim 1 is characterized in that: described switching circuit adopts bidirectional triode thyristor.

3. one-way pump according to claim 1 is characterized in that: described switching circuit adopts relay.

4. according to each described one-way pump of claim 1 to 3, it is characterized in that: described rotor field sample circuit adopts Hall element.