KR900005202Y1 - Driving circuit for solenoid pump - Google Patents

Abstract

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Description

Electronic pump driving circuit

1 is a block diagram of the present invention.

2 is a detailed circuit diagram of the present invention.

3 is a waveform diagram of the main part of the present invention.

The present invention relates to an electronic pump driving circuit of a large-capacity heating device, and in particular, an electric pump that saves the flow rate by adjusting the amount of the pump by driving the electronic pump while dividing the frequency of the power line into two and randomly selecting one of them. It relates to a drive circuit.

Conventionally, a petroleum gas boiler, a rotary heater, or a large-capacity castom heater does not have any device for adjusting the flow rate supplied to a burner, and to turn on / off an electronic pump operated by AC power. While controlling the combustion state using the wind pressure inside the burner.

However, the state of combustion can be controlled by the one-step flow control method of turning on / off the electronic pump and the wind pressure supplied into the burner, but a large flow rate is required at the moment of ignition of the cast boiler. In other words, once ignited, only a proper flow rate needs to be supplied.

Accordingly, an object of the present invention is to provide an electronic pump driving circuit for dividing a frequency of an input power supply into two and supplying only a proper flow rate while driving an electronic pump using the same.

To this end, the present invention is to control the flow rate while adjusting the pumping amount of the electronic pump in a large-capacity heating device, including a castum heater, the DC power unit for converting AC power to DC power, and half-wave rectified input power to 60Hz A frequency generator which receives a pulse generator and a 120 Hz pulse generator for generating a 120 Hz pulse by full-wave rectifying the input power, a frequency selector configured to select one of the signals by inputting a signal of a 60 Hz pulse generator and a 120 Hz pulse generator; It consists of electronic pump driving units that control the electronic pump with the pulse selected by the selection unit, and extracts two pulses of 60Hz and 120Hz from the input power, and generates two kinds of signals by the signals of the heating control selector terminal and the alarm reset terminal. By randomly selecting one of the pulses to control the pumping amount of the electronic pump to adjust the flow rate supplied to the burner.

The present invention is described in detail based on the accompanying drawings as follows.

FIG. 1 is a block diagram of the present invention, which converts AC power input into DC power by the DC power supply unit 10, and outputs 60 Hz pulses from the 60 Hz pulse generator 20 in which the input power is half-wave rectified and divided. While output power is rectified and divided, the 120 Hz pulse generator 30 outputs a 120 Hz pulse so that the signal of the heat generation adjustment selector terminal and the neck reset terminal is input at 60 Hz. Select one of the signal and the signal of 120 Hz, and the output of the frequency selector 40 allows the electronic pump driver 50 to turn the electronic pump on and off, as well as the electronic pump according to the signals of 60 Hz and 120 Hz. It is to be driven by.

Referring to the present invention in detail based on the circuit diagram 2 as follows.

The AC input power is converted into a DC voltage while being full-wave rectified by the bridge diode BD, which is the DC power supply unit 10.

AC input power is half-wave rectified by diode D ₁ and the voltage divided by resistors R ₁ , R ₂ and capacitor C ₁ is applied to the inverting input terminal (-) of comparator GP ₁ . While the voltage divided by the resistors R ₃ and R ₄ is applied to the non-inverting input terminal (+), a pulse of 60 Hz is output from the output terminal of the comparator OP ₁ of the 60 Hz pulse generator 20.

Meanwhile, the voltage rectified by the bridge diode BD is divided by the resistors R ₅ , R ₆ , and the capacitor C ₂ , and applied to the non-inverting input terminal (+) of the comparator OP ₂ . While voltage is divided by the diodes (D ₂ ), resistors (R ₇ ), (R ₈ ) and capacitor (C ₃ ) and zener diode (ZD) and divided by resistors (R ₉ ), (R ₁₀ ) Is applied to the inverting input terminal (-) of the comparator OP ₂ to be applied as a reference voltage for setting the pulse width, and resistors R ₁₁ , R ₁₂ and diode from the output terminal to the inverting input terminal (-). The comparator OP ₂ of the 120 Hz pulse generator 30 fed back via D ₃ outputs a 120 Hz pulse through the resistor R ₁₃ .

The second and third input terminals of the AND gate A ₁ , to which the output of the comparator OP ₁ is applied to the first input terminal, are directly passed through the inverter from the heat generating adjustment selection terminal S and the alarm reset terminal R. The signal is applied, and the second and third input terminals of the AND gate A _{2 to} which the output of the comparator OP ₂ is applied to the first input terminal are the heat generating adjustment selection terminal S and the alarm reset terminal R. A signal is applied from the heating adjustment selection terminal (S) and the alarm reset terminal (R) so that the outputs of the two AND gates (A ₁ ) and (A ₂ ) pass through the OP gate (OR). One frequency selector 40 selects a pulse of 60 Hz or 120 Hz.

The output of the OR gate OR connects to the base of transistor Q ₂ at the emitter of transistor Q ₁ , which is applied to the base via resistors R ₁₄ and R ₁₅ , and the two transistors Q ₁ , An electron pump VP is connected to the collector of Q ₂ to adjust the pumping amount by reciprocating the cleanser of the electron pump VP from the electron pump driver 50 according to the output of the frequency selector 40. .

According to the present invention configured as described above, the input power source is half-wave rectified by the diode D ₁ , divided by the resistors R ₁ , R ₂ , and the capacitor C ₁ , and is shown in FIG. As a result, a pulse of 60 Hz is applied to the inverting input terminal (-) of the comparator OP ₁ .

In the comparator OP _{1 in} which the voltage divided by the resistors R ₃ and R ₄ is applied to the non-inverting input terminal B as a reference voltage, a pulse width of 60 Hz is set according to the reference voltage. C) It outputs a pulse signal as shown in the figure.

On the other hand, it is full-wave rectified by the bridge diode (BD) and divided by the resistors (R ₅ ), (R ₆ ) and the capacitor (C ₂ ) and the comparator (OP) with a pulse of 120 Hz ₂ ) is applied to the non-inverting input terminal (+).

In the comparator OP ₂ , the inverting input terminal (-) thereof has a constant voltage through diodes D ₂ , resistors R ₈ , (R ₉ ), (R ₁₀ ) and capacitors (C ₃ ) and zener diodes (ZD). Since the reference voltage is applied, the pulse width is set accordingly to output a pulse signal as shown in (d) of FIG.

The output of the 60 Hz pulse generator 20 and the output of the 120 Hz pulse generator 30 are applied to the first input terminals of the two AND gates A ₁ and A ₂ , respectively, and the heat generating adjustment selection terminal S and The outputs of the two AND gates (A ₁ ) and (A ₂ ) are adjusted according to the signal input from the alarm reset terminal (R), and both from the heat generating adjustment selection terminal (S) and the alarm reset terminal (R). When "H" is applied, the output is "L" while "L" and "H" are applied to the AND gate A ₁ , and "H" is applied to the AND gate A ₂ to the first input terminal. The applied 120Hz pulses drive the electron pump VP while turning on the transistors Q ₁ and Q ₂ through the OR gate OR. In this case, the plunger is reciprocated to increase the pumped flow rate. do.

And, when the heating control selection terminal (S) is the "L" alarm set terminal (R) is input "H", respectively, the output of the AND gate (A ₂ ) becomes "L" AND AND gate (A ₁ ) Since both furnaces are supplied with “H”, the pulse of 60Hz applied to the first input terminal turns on the transistors Q ₁ and Q ₂ through the OR gate OR, and the electron pump VP is driven. Reduce the flow rate being pumped while reciprocating.

When "L" is applied from the alarm reset terminal R, the outputs of both AND gates A ₁ and A ₂ become L and the transistors Q ₁ and Q ₂ are turned off. This prevents the electronic pump (VP) from driving.

The pulse waveform shown in (e) of FIG. 3 shows a case in which 120 Hz is output and 60 Hz is output through the OR gate OR, and (f) is a signal input from the heating control selection terminal S. FIG. Fig. 4 shows waveforms of the signal input from the alarm reset terminal R. Figs.

As such, the present invention is designed to control the flow rate supplied to the burner from the large-capacity castum heater. The input power passes through half-wave rectification and full-wave rectification, extracting two frequencies of 60 Hz and 120 Hz, and selecting an external heating adjustment terminal. (S) and the alarm reset terminal (R) to drive the electronic pump (VP) by arbitrarily selecting from 60Hz and 120Hz signal to save the flow rate and combustion by dividing the pumped flow rate into two stages It is to control the state efficiently.

Claims (1)

In the electronic pump driving circuit of a large-capacity heating mechanism, a DC power supply unit 10 composed of bridge diodes BD for full-wave rectification, diodes D ₁ , resistors R ₁ -R ₄ , and capacitors C ₁ ) and a comparator (OP ₁ ) consisting of a 60 Hz pulse generator 20, a diode (D ₂ ), (D ₃ ) and a resistor (R ₅ )-(R ₁₃ ) for full-wave rectifying and dividing the input power. And a 120 Hz pulse generator 30 composed of a condenser (C ₂ ), (C ₃ ), a zener diode (ZD), and a comparator (OP ₂ ) to divide the full-wave rectified voltage in the DC power supply unit (10), and A frequency consisting of a gate (A ₁ ) (A ₂ ) and an OR gate (OR) to select a frequency of 60 Hz or 120 Hz according to a signal from an external heat generation adjustment selection terminal (S) and an alarm reset terminal (R). It consists of a selector 40, resistors R ₁₄ , R ₁₅ , transistors Q ₁ , and Q ₂ to control the electronic pump VP according to the output of the frequency selector 40. Electronic pump drive unit 50 As an e-pump drive circuit characterized by configured.