KR950002861A - Filter replacement time indication circuit of air purifier - Google Patents

Abstract

The present invention provides a high voltage generator (1) for boosting an input low voltage to a high voltage, and an electrostatic precipitating and ion generating filter unit (2) for charging a contaminant in air passing between a + electrode and a-electrode to be collected on an electrode plate. And, an electrostatic precipitating type air purifier composed of an air purifier main controller 3 for controlling the electrostatic precipitating and ion generating filter unit 2, wherein the input voltage stage 13 and the high voltage generating unit 1 are separated from each other. The power cut-off unit 9 and the overvoltage detector 10 are coupled to each other, and the alarm unit 11 is connected between the power cut-off unit 9 and the overvoltage detector 10, and the main controller 3 of the air purifier is provided. The overvoltage detection unit 10 and the alarm unit 11 are configured to control the input current, which is reduced when sparking occurs due to accumulation of contaminants at a predetermined thickness in the electrical current collecting and ion generating filter unit 2. The detection unit detects the overvoltage detection unit 10 As an output signal, the alarm unit 11 instructs the user of the cleaning and cleaning time of the dust collector through the light emitting diode LED and the speaker S, and simultaneously supplies the power cutoff signal to the power cutoff unit 9. The invention relates to a filter replacement time indicating circuit of an air purifier.

Description

Filter replacement time indication circuit of air purifier

Since this is an open matter, no full text was included.

1 is a block explanatory diagram of a prior art of an air purifier, FIG. 2 is an entire block explanatory diagram of the present invention, and FIG. 3 is a detailed circuit diagram of the present invention.

Claims (2)

A high voltage generator 1 for boosting the input low voltage to a high voltage, an electrostatic precipitating and ion generating filter unit 2 for charging the contaminants in the air passing between the + electrode and the-electrode to be collected on the electrode plate; In the electrostatic precipitating type air purifier comprising the main air purifier (3) for controlling the electrostatic precipitating and ion generating filter unit (2), the power is cut off between the input voltage terminal (13) and the high voltage generating unit (1). The unit 9 and the overvoltage detection unit 10 are coupled to each other, and the alarm unit 11 is connected between the power cutoff unit 9 and the overvoltage detection unit 10, and the overvoltage detection unit at the main controller 3 of the air purifier is provided. 10 and the alarm unit 11, and the overvoltage detection unit detects an input current that is reduced when spark phenomenon occurs due to the accumulation of contaminants at a predetermined thickness in the electrical current collecting and ion generating filter unit 2. Output signal of the overvoltage detector 10 In the above-mentioned alarm unit 11 is a light emitting diode (LED) and the filter of the air air cleaner characterized in that through a speaker (S) supplies a power-off signal to the power blocking portion (9) (FILTER) replacement timing indication circuit. According to claim 1, wherein the power cutoff unit 9 is connected to the photocoupler (PHOTO COUPLER) 12 and the blocking transistor (Q2) in parallel so that the power of the power input terminal 13 is input, the overload detection unit (10) is configured such that the collector-side output of the above-mentioned cutoff transistor is input to the base of transistor Q1 through a resistor R1, and the collector-side output of Q1 and the potential divider resistors R2 and R3 are joined. The other end of the comparator 16 is configured to input a reference voltage, and the output level of the comparator 10 is configured to be input to the alarm unit 11 through the inverter i, and the alarm unit 11 is input. When the output level of the comparator 16 is a low level, the signal is inverted through the inverter i to operate the photodiode LED, and at the same time, the air is configured to supply the cutoff signal. Purifier filter (F ilter) Replacement timing indicator circuit. ※ Note: The disclosure is based on the initial application.