KR20090051413A - The structure and the controlling process of the electromagnetic pump - Google Patents

Abstract

The present invention relates to a structure and a control method of a pump driven by an electromagnet and a permanent magnet without a motor, and more particularly, a liquid introduced when a piston with a permanent magnet is reciprocated in a cylinder by an electromagnet driven by a microcomputer. The present invention relates to a pump that can control the discharge amount of the gas, and has a feature of controlling the stroke length and operating cycle of the piston in order to adjust the discharge amount of the liquid per unit time.

Micom, Inverter, Switching Circuit, Manpower, Repulsive Force, Magnetic, Check Valve

Description

The structure and the controlling process of the electromagnetic pump

The present invention relates to a structure and a control method of a pump driven by an electromagnet and a permanent magnet without a motor, and more particularly, a liquid introduced by reciprocating a piston in which a permanent magnet is built into an electromagnet driven by a microcomputer in a cylinder. It relates to a pump that can adjust the discharge amount of the software by a software method.

In general, pumps are used in various structures and applications to pressurize or transfer liquids by using mechanical energy provided by power sources such as motors. It is unavoidable and difficult to manufacture and supply small-sized, low-cost pumps that are versatile and standardized due to the fixed mechanical structure combined with the motor.

In addition, in the case of a small pump, there is a problem that it is difficult to control the discharge capacity and to select the discharge capacity if necessary.

Prior art

Utility Model Registration: 20-0189742-0000

If the same magnetism occurs on the electromagnets disposed on both sides of the permanent magnet inserted into the cylinder, which is a nonmagnetic material, that is, the N magnets are placed on both sides of the permanent magnet inserted in the cylinder such that the left side is N pole and the right side is S pole. If the magnetism of the pole is the same, the repulsive force acts between the N pole of the permanent magnet and the N pole of the electromagnet placed on the left side and the attraction force acting between the S pole of the permanent magnet and the N pole of the electromagnet placed on the right side. When the magnetism of the S pole occurs equally in the electromagnets disposed on both sides of the permanent magnet, the attraction force between the N pole of the permanent magnet and the S pole of the electromagnet disposed on the left side is changed. The repulsive force acting between the pole and the S pole of the electromagnet placed on the right causes the permanent magnet to move in the direction of the left electromagnet in the cylinder.

Therefore, inserting a piston with a permanent magnet fixed therein to maintain the airtightness of a non-magnetic cylinder, and repeatedly switching the magnetism of the electromagnet disposed on both sides of the cylinder at regular cycles, the piston continues to reciprocate in the cylinder. do.

According to the above-described operating principle, the inflow and discharge of the liquid is simultaneously performed according to the movement of the pump chamber in which electromagnets are arranged on both sides of the cylinder and the piston repeating the reciprocating motion in the cylinder, and the piston is in the cylinder. The amount of liquid discharge per unit time can be controlled by controlling the stroke distance of the piston and the operation period of the reciprocating motion by the program inputted in the microcomputer's internal ROM within the range corresponding to the maximum stroke distance that can be reciprocated.

Accordingly, the present invention provides a structure of a pump for simultaneously introducing and discharging liquid in a pump chamber disposed at both sides of the cylinder by a piston reciprocating in the cylinder, and the magnetism and current of the electromagnet disposed at both sides of the cylinder. It is an object of the present invention to provide an electric circuit for controlling the flow of the microcomputer and a program input to the internal microcomputer of the microcomputer so that the electromagnet pump of the present invention can adjust the discharge amount per unit time.

The present invention is a structure of a pump configured to simultaneously inflow and discharge of liquid in accordance with the movement of the piston reciprocating in the cylinder, and the same magnetic properties are arranged at a certain distance on both sides of the piston reciprocating in the cylinder A first electromagnet and a second electromagnet connected to a circuit to generate the electromagnet, an electromagnet driving unit for supplying current to an electric circuit connecting the first electromagnet and the second electromagnet, and switching magnetism, an electromagnet control unit for operating the electromagnet driving unit; A microcomputer connected to the electromagnet control unit and a corresponding output port to read data input to the internal ROM, and output a driving pulse, an oscillator to generate a system clock to the microcomputer, a reset circuit unit to generate a power-on reset signal to the microcomputer, and a system Supply the main power to the constant voltage supply for supplying power to the internal Consists of the main switch to is characterized in that the microcomputer is driving a pump in the software of the control and that can control the ejection amount per unit time.

In the case of the useful design of the vacuum circulation pump using an electromagnet registered with the utility model (Registration No .: 20-0189742-0000) in the prior art to facilitate the transfer of the liquid in the pipe, the movement of the piston and the discharge of the liquid may be performed even though the transfer of the liquid is possible. Although it is disadvantageous that the amount cannot be precisely controlled, the structure and control method of the magnetic pump of the present invention can be miniaturized due to the simple structure of the pump, and the software can be controlled to precisely adjust the discharge amount per unit time. In addition to its role, it can be used in a wide range of applications that can replace the functions of the liquid metering dispenser.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Referring to the assembly cross-sectional view of Figure 5 and the exploded perspective view of Figure 6 describes the assembly of the electromagnet pump 500 of the present invention, the screw formed on both ends of the permanent magnet 504 inserted into the piston 503 Left and right enamels of the coils 201 and 202 fixed to the grooves 602a and 602b with the fixing bolts 505a and 505b and inserted into the non-magnetic cylinder 501 and inserted into the iron cores 108 and 109 of the first and second electromagnets. The wires 201a, 201b, 202a, and 202b are drawn out through the drawing grooves 605a and 605b formed on the side surfaces of the pump chambers 502a and 502b, and then the iron cores of the first and second electromagnets are fixed with the fixing bolts 512a and 512b. 108, 109, coils 201, 202, and pump chambers 502a, 502b, which are nonmagnetic materials, are assembled together.

Referring to the perspective view of FIG. 7, the iron cores 108 and 109 and the coils 201 and 202 of the first and second electromagnets are assembled with electromagnets in the pump chambers 502a and 502b by the above assembly. 2 The direction of the inflow grooves 700b and 700d and the discharge grooves 700a and 700c formed for the inflow and discharge of the liquid into the iron cores 108 and 109 of the electromagnets is provided in the screw grooves 701a to 701d of the pump chambers 502a and 502b. It coincides with the positions of the check valves 509a to 509d to be engaged.

The pump chambers 502a and 502b assembled as described above are screwed with the bolt grooves 601a and 601b formed at both ends of the cylinder 501 to assemble the pump 500.

Referring to FIG. 2, the right enameled wire 201a of the coil 201 drawn out through the drawing grooves 605a and 605b of the pump chambers 502a and 502b and the left enameled wire 202a of the coil 202 are the same circuit. Is connected to the electromagnet drive unit 107 by the current supply line 200a, and the left enameled wire 201b of the coil 201 and the right enameled wire 202b of the coil 202 are the same circuit. A circuit is connected and connected to the electromagnet driver 107 by the current supply line 200b.

The driving method of the pump 500 and the method of controlling the discharge amount per unit time will be described with reference to the detailed circuit diagram of FIG. 2 and the detailed operation flowchart of FIG. 4 as follows.

When power is supplied from the constant voltage supply unit 102 by turning on the main switch 101, the microcomputer 100 is initialized by the power on reset command of the reset circuit unit 103 (S100).

Here, the microcomputer that reads the drive data inputted to the internal ROM and outputs it to the P0 to P5 terminals of the corresponding output port uses MCS-51 series as an example.

When the initialized microcomputer 100 outputs logic 0 to the P0, P4, and P3 terminals of the corresponding output port (S101), the Q0, Q4, and Q3 inverters of the electromagnet control unit 106 output logic 1.

Here, the inverters Q4 connected to the corresponding output terminals of the microcomputer 100 to turn on the inverters Q0 to Q3 for controlling the electromagnet driver 107 and the LEDs L0 and L1 for indicating the direction of the magnetic light are turned on. Q5) uses an LS-TTL IC, 74LS14P, and the electromagnet driver 107 is a switching circuit (T0, T1, R0, R1), (T2) to which a circuit is connected by the logic 1 output of the inverters Q0 to Q3. , T3, R2, R3, (T4, T5, R4, R5) and (T6, T7, R6, R7).

When the switching circuits T0, T1, R0, and R1 of the electromagnet driver 107 are turned on by the logic 1 output of the inverter Q0, the current of Vcc1 passes through the current supply line 200a to the right enameled line of the coil 201 ( 201a and the left enameled line 202a of the coil 202 are supplied, and the LED L0 of the LED display unit 104 indicating the magnetic direction by the logic 1 output of the inverter Q4 is turned on, and the inverter ( When the switching circuits T6, T7, R6, and R7 of the electromagnet drive unit 107 are turned on by the logic 1 output of Q3), the right enamel wire 201a of the coil 201 and the left enamel wire 202a of the coil 202 are provided. ) And the current supplied to the current flows in the current directions 203a and 203b for generating the S pole, and the electromagnet driver 107 passes the left enamel wire 201b of the coil 201 and the right enamel wire 202b of the coil 202. It flows through the switching circuit (T6, T7, R6, R7) that is open in the on state through the current supply line (200b) connected to.

In addition, the switching circuit which comprises the electromagnet drive part 107 may replace the detailed circuit diagram which used the relay in the electromagnet drive part of FIG.

At this time, the switching circuits T2, T3, R2, R3, and T4, T5, R4, and R5 are turned off, and the current cannot flow.

Accordingly, when the microcomputer 100 outputs logic 0 to the P0, P4, and P3 terminals of the corresponding output port (S101), the iron core 108 and the second electromagnet of the first electromagnet disposed on both sides of the permanent magnet 504 are provided. The iron core 109 forms a magnet of the S pole toward the permanent magnet 504.

Therefore, the attraction force acting on the north pole of the permanent magnet 504 and the repulsive force acting on the south pole of the permanent magnet 504 move the permanent magnet 504 to the left.

In the next step, the built-in counter of the microcomputer 100 is operated (S102), and the moving time that asks whether the built-in ROM of the microcomputer 100 meets the repeated loop count value programmed as the moving time of the permanent magnet 504? In step S103, if the iteration loop count value is not satisfied, the process proceeds to step S104 of initializing the timer time constant, and if the iteration loop count value is satisfied, outputting logic 1 to the output terminals of P0, P4, and P3 (S105). Proceed to

In operation S105, when the microcomputer 100 outputs logic 1 to the terminals P0, P4, and P3 of the corresponding output port (S101), the Q0, Q4, and Q3 inverters of the electromagnet control unit 106 output logic 0.

When the switching circuits T0, T1, R0, and R1 constituting the electromagnet driving unit 107 are turned off by the logic 0 output of the inverter Q0, the current of Vcc1 flows to the right side of the coil 201 through the current supply line 200a. The flow of the enameled wire 201a and the left enameled wire 202a of the coil 202 is cut off, and the LED (L0) of the LED display unit 104 displaying the magnetic direction by the logic 0 output of the inverter Q4. ) Is turned off, and the switching circuits T6, T7, R6, and R7 constituting the electromagnet drive unit 107 are turned off by the logic 0 output of the inverter Q3, and the left enamelled wire 201b of the coil 201 is turned off. The current flowing to the switching circuits T6, T7, R6, and R7 is cut off through the current supply line 200b connecting the right enamel wire 202b of the coil 202.

Accordingly, when the microcomputer 100 outputs logic 1 to the P0, P4, and P3 terminals of the corresponding output port (S105), the iron core 108 and the second electromagnet of the first electromagnet disposed on both sides of the permanent magnet 504 are output. The iron core 109 loses magnetism.

That is, in step S105, the piston 503 in which the permanent magnet 504 is built is moved to the left in the cylinder 501 and stops moving.

In step S106, the repeating loop count value programmed as the stop time of the permanent magnet 504 is stored in the internal ROM of the microcomputer 100 in order to maintain the stop state of the step S105, and in step S107. Initialize the time constant of the timer and operate the timer in step S108.

If the repetition loop count value is not satisfied in step S109, whether the repetition loop count value is satisfied is performed. If the repetition loop count value is satisfied, the operation is terminated.

By performing the step S109 including the steps S100 to S110, the piston 503 having the permanent magnet 504 is moved to the left in the cylinder 501 and ends the state in which the movement stops for a predetermined time.

Step S111 is a step for moving the piston 503 to the right in the cylinder 501, and switching circuits T4, T5, R4, constituting the electromagnet drive unit 107 by the logic 0 output of the inverter Q2. When R5) is turned on, the current of Vcc1 is supplied to the left enamel wire 201b of the coil 201 and the right enamel wire 202b of the coil 202 through the current supply line 200b, and logic 1 of the inverter Q5. The LED L1 of the LED display unit 104 indicating the magnetic direction by the output is turned on, and the switching circuits T2, T3, and R2 constituting the electromagnet driver 107 by the logic 1 output of the inverter Q1. When R3 is turned on, the current supplied to the left enameled wire 201b of the coil 201 and the right enameled wire 202b of the coil 202 flows in the current directions 204a and 204b for generating the N pole. Open in the on state through the current supply line 200a connecting the right enameled wire 201a of the coil 201 and the left enameled wire 202a of the coil 202. Air is caused to flow into the switching circuit (T2, T3, R2, R3) which.

At this time, the switching circuits T0, T1, R0, R1, (T6, T7, R6, R7) are turned off, and the current cannot flow.

Accordingly, when the microcomputer 100 outputs logic 0 to the P2, P5, and P1 terminals of the corresponding output port (S111), the iron core 108 and the second electromagnet of the first electromagnet disposed on both sides of the permanent magnet 504 are output. The iron core 109 forms the magnetic pole of the north pole toward the permanent magnet 504.

Therefore, the repulsive force acting on the north pole of the permanent magnet 504 and the attraction force acting on the south pole of the permanent magnet 504 move the permanent magnet 504 to the right.

The step S112 is a step of storing a repeating loop count value programmed in the internal ROM of the microcomputer 100 as a moving time of the permanent magnet 504 in the internal memory to maintain the state of the step S111 for a predetermined time. In step S, the time constant of the timer is initialized, and in step S114, the timer is operated.

Next, if the repeat time is not satisfied in step S115, the timer corrects the timer when the built-in ROM of the microcomputer 100 asks whether the repeat loop count value programmed as the movement time of the permanent magnet 504 is satisfied. The process proceeds to the step S116 of initializing the number and outputs a logic 1 to the output terminals of P2, P5, and P1 if the iteration loop count value is satisfied.

In operation S118, when the microcomputer 100 outputs logic 1 to the P2, P5, and P1 terminals of the corresponding output port (S117), the Q2, Q5, and Q1 inverters of the electromagnet control unit 106 output logic 0.

When the switching circuits T4, T5, R4, and R5 constituting the electromagnet driver 107 are turned off by the logic 0 output of the inverter Q2, the current of Vcc1 is left of the coil 201 through the current supply line 200b. The flow of the enameled wire 201b and the right enameled wire 202b of the coil 202 is cut off, and the LED (L1) of the LED display unit 104 displaying the magnetic direction by the logic 0 output of the inverter Q5. ) Is turned off, and the switching circuits T2, T3, R2, and R3 constituting the electromagnet drive unit 107 are turned off by the logic 0 output of the inverter Q1, and the right enameled wire 201a of the coil 201 is turned off. The current flowing to the switching circuits T2, T3, R2, and R3 is cut off through the current supply line 200a connecting the left enamel line 202a of the coil 202.

Accordingly, when the microcomputer 100 outputs logic 1 to the P2, P5, and P1 terminals of the corresponding output port (S117), the iron core 108 and the second electromagnet of the first electromagnet disposed on both sides of the permanent magnet 504 may be used. The iron core 109 loses magnetism.

That is, in step S117, the piston 503 with the permanent magnet 504 is moved to the right in the cylinder 501 and stops moving.

In step S118, the repeating loop count value programmed as the stop time of the permanent magnet 504 is stored in the internal ROM of the microcomputer 100 in order to maintain the stop state of S117 described above, and in step S119. Initialize the time constant of the timer and operate the timer in step S120.

If the iteration loop count value is not satisfied in step S121, if the iteration loop count value is not satisfied, the process proceeds to step S122 of initializing the timer time constant and stops if the iteration loop count value is satisfied. .

The piston 503 having the permanent magnet 504 embedded therein moves to the left in the cylinder 501 and stops movement for a predetermined time by performing the step S121 including the steps S101 to S122, and then the piston 503 ) Moves to the right and ends the movement for a certain time.

That is, the piston 503 performs one reciprocating motion in the cylinder 501 by performing the step S121 including the steps S101 to S122, and the step S101 required to move the piston 503 to the left in the step S123. After storing the iteration loop count value in the internal memory and initializing the time constant of the timer in step S124, the piston 503 repeats the reciprocating motion in the cylinder 501 by repeating the steps S101 to S124. .

In the above step, the time to move the piston 503 to the left (S101) and the right (S111) in the cylinder 501 by the timer time constant value and the repeating loop count value input to the built-in ROM of the microcomputer (100) And the time that the piston 503 is kept in the stopped state (S105, S117) can be adjusted in software.

That is, in the reciprocating pump combined with the motor, the stroke distance is determined by the connecting rod which converts the rotational motion of the motor into the linear motion of the piston. However, in the structure of the electromagnet pump of the present invention, the piston 503 is in the cylinder 501. The amount of discharge per unit time of the pump may be controlled by adjusting the movement time of the piston 503 and the time at which the piston 503 stops within a range of the stroke distance 801 that can be moved by a software method.

Referring to the drawing showing the flow of the liquid in the electromagnet pump of FIG. 8, the inflow and outflow of liquid according to the movement of the piston 503 will be described. Through the inflow direction (511d, 803b) through the right side of the cylinder 501 and the liquid introduced into the left side of the cylinder 501 is discharged in the discharge direction (802a, 511a) through the check valve 509a.

In addition, the liquid flows into the left side of the cylinder 501 in the inflow directions 511b and 802b through the check valve 509b by the right movement of the piston 503, and the liquid introduced into the right side of the cylinder 501 Discharges in the discharge directions 803a and 511c through the valve 509c.

That is, as the piston 503 moves, the inflow and the discharge of the liquid occur at the same time.

Therefore, the structure and control method of the electromagnet pump of the present invention pumps the drive current controlled by the control circuit of the program and system input to the built-in ROM of the microcomputer 100 through the current supply line (200a, 200b) Is supplied in the inflow direction (511b, 511d) through the check valves (509b, 509d) and discharged in the discharge direction (511a, 511c) through the check valves (509a, 509c). There are features that can be adjusted in a way.

In addition, it is made of a simple structure with low frictional resistance and can be miniaturized, and can be standardized according to the use and capacity.

1 is a block diagram constituting the structure of the electromagnet pump according to the present invention

2 is a detailed circuit diagram of FIG.

3 is a detailed circuit diagram using a relay in the electromagnet driving unit of FIG.

4 is a detailed operation flowchart for controlling the electromagnet driving unit of FIG. 1 with a microcomputer;

5 is an assembled cross-sectional view of the electromagnet pump according to the present invention.

6 is an exploded perspective view of an electromagnet pump according to the present invention;

Figure 7 is a perspective view for showing the assembly structure of the electromagnet pump according to the present invention

8 is a view showing the flow of the liquid in the electromagnet pump according to the present invention

9 is an assembled perspective view of an electromagnet pump according to the present invention;

<Description of the code | symbol about the principal part of drawing>

100 ... Microcomputer 101 ... Main Switch

102 ... constant voltage supply 103 ... oscillator

104 LED display 105 Oscillator

Electromagnet control unit ... 107 Electromagnet drive unit ...

Iron core of the first electromagnet 109 ..... Iron core of the second electromagnet

200a, 200b ... Current supply lines 201, 202 ... Coil

201a, 202b ... right enameled wire 201b, 202a ... left enameled wire

203a, 203b ... current direction to generate S pole

204a, 204b ... North current SW ... switch generating N pole

SMPS1, SMPS2 ... Regulators for Constant Voltage Generation

C1 to C7 Capacitor CR Oscillator

R0 to R8 ... resistor T0 to T7 ... transistor

Q0 to Q5 ... LEDs indicating the direction of inverter L0, L1 ... magnetic

RL0 to RL3 ... relay D0 to D3 ... diode

500 Pump 501 Cylinder 502a, 502b Pump chamber

503 ... piston 504 ... permanent magnet

505a, 505b, 512a, 512b fixing bolts 506a to 506d check valve seat

507a to 507d.Ball 508a to 508d.Bias spring

509a to 509d check valve 510a to 510d ...

511a, 511c, 802a, 803a ... Discharge direction 511b, 511d, 802b, 803b ... inflow direction

600a, 600b, 602a, 602b, 603a, 603b, 604a ~ 604d ... 606a, 606b, 701a ~ 701d ... nut groove

601a, 601b ... Bolt Groove 605a, 605b ... Withdraw Groove

700a, 700c ... Discharge groove 700b, 700d ... Inflow groove

800 ... cylinder length 801 ... stroke

Claims (4)

Supplying current and switching magnetism to the structure of the pump configured to simultaneously induce and discharge liquid according to the movement of the piston reciprocating in the cylinder, and to an electrical circuit connecting the first and second electromagnets of the pump. An electromagnet driver for operating the electromagnet driver, an electromagnet controller for operating the electromagnet driver, a microcomputer connected to the electromagnet controller and the corresponding output port to read data input to the internal ROM, and output a driving pulse, an oscillator for generating a system clock to the microcomputer; Structure and control of an electromagnet pump, comprising a reset circuit for generating a power-on reset signal to the microcomputer, a constant voltage supply for supplying power to the system, and a main switch for supplying main power to the constant voltage supply. Way The circuit is characterized in that the first electromagnet and the second electromagnet connected to the circuit are arranged at regular distances on both sides of the piston so as to generate the same magnetism, and are electrically connected to the electromagnet driving unit composed of the switching circuit by a current supply line. The function of the switching circuit according to claim 2, wherein the polarity is switched by changing the direction of the current flowing through the first and second electromagnets by the switching circuit of the electromagnet driver. Method of adjusting the discharge capacity, characterized in that the movement time and the stop time within the stroke of the piston in the software method to adjust the discharge capacity per unit time of the pump.

Images