JPS60142830A - Dust removing apparatus of central cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a dust removal device for a central cleaner.

Structure of the conventional example and its problems Figure 1 shows the schematic structure of the central cleaner.
) is the main body of the central cleaner, (2) is the piping, and (3) is the hose outlet provided on the can wall and room.

As shown in FIG. 2, the central cleaner body (2) includes an intake hole (4), a filter (5), and an electric blower (6).
The dust and air sucked in through the intake hole (4) are separated by a filter (5), and the dust accumulates in the dust box (8), and only the air enters the exhaust hole ( 7) It is constructed so that it can be easily discharged. but,
If the operating time is prolonged, the filter (5) will become clogged with dust, the air volume will decrease, and the function as a vacuum cleaner will also deteriorate. Therefore, the handle (9) and the dust removal spring αQ
A dust removal device consisting of a filter (5) is provided so that the user can periodically rotate a handle (9) to remove dust attached to the filter (5).

However, since the user rarely removes dust by turning the handle (9), there is a problem that the filter (El) gets clogged. The figure shows a curve for decreasing the air volume when dust removal is not performed.The air volume decreases with the usage time as shown in the curve ■.As the air flow i decreases, the suction power also decreases, and the The performance of the device will be significantly reduced.

OBJECTS OF THE INVENTION In view of the above-mentioned conventional problems, an object of the present invention is to provide a dust removal device t for a central cleaner that automatically removes dust depending on the length of time the central cleaner is used.

Structure of the Invention For this purpose, the present invention provides a time constant circuit consisting of a resistor and a capacitor that integrates the operating time of the cleaner. To provide a dust removal device for a central cleaner configured to vary the time during which electricity is applied to an electric motor.

According to a preferred embodiment of the present invention, the time constant circuit is repeatedly charged and discharged, the number of times of charging and discharging is counted by a counter, and the energization time to the dust removal motor is set according to the number of generated pulses. Configured to be variable.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 6 and 4. In FIG. 6, the electric blower (6) of the central cleaner is connected to a three-phase power source via an electric/magnetic switch contact (b). Here, the electromagnetic switch contact (b) is configured to be opened and closed by a well-known remote control device. Connect the power transformer (2) for the control circuit of the dust removal machine between the power lines (single phase) of the electric blower (6).
The next winding is connected, and a diode bridge (to) is connected to the secondary side of this power transformer (a), so that all waves are passed through. Further, a smoothing capacitor α is connected to the output of the diode bridge 4. Here, an integrating circuit (time constant circuit) composed of a resistor QQ and a capacitor (T) is connected, and its output is inputted to a non-inverting terminal of an operational amplifier (TO) via a resistor 071. Furthermore, operational amplifier (2)
A reference voltage α value is given to the inverting terminal of . Further, a return resistor (1) is connected to the operational amplifier (T), and a comparator with hysteresis is formed by the resistor (17) and the wire. The output of the operational amplifier (2) is connected to the base of the transistor (2) through a Zener diode (2) and a resistor (3) via a delay circuit including a resistor Qυ and a capacitor (2).

Resistor (A) is the discharge resistance of the capacitor (A).

Here, the voltage across the capacitor (G) (AA voltage) is
The periodic point B determined by the time constant of the resistor (T) and the capacitor (T) changes from L level to H level, and when the output point B becomes H level, it is delayed by the delay circuit and the transistor (2)
turns on, the charge on the capacitor U is discharged, and the voltage at point A drops below the reference voltage, the output of the operational amplifier (C) changes from H level to L level, and this cycle repeats.
The voltage at output point B has a pulse waveform as shown in FIG. 4(b). Note that FIG. 4(0) shows the output waveform of the delay circuit.

The pulse waveform at output point B is input to the next stage counter and counted, and the two communication signals are input to the analog multiplexer), and the outputs Xo, XI, Xz, etc. are input to the pulse at point B. Switch according to the number. resistance wire, trowel, 1
811 and a resistor - provide a bias voltage for the transistor body 31-(transfer)1. Here, when the output Xo of the analog multiplexer (E) is selected when the number of pulses is a certain value, the transistor () turns on and the resistor (■),
The capacitor (481 is charged via the diode (391). The charging speed at that time is determined by the time constant of the resistor ■) and the capacitor □.Hereafter, the outputs X+ and Xz of the analog multiplexer (E) are selected. When 1 is the transistor example, 1 is turned on, and the resistors (37) and (
38), the diode, and the capacitor □□□) are charged through the diode (41), respectively. Here, resistance ml, to
If the values of I and t881 are initialized, the charging speed of the capacitor decoy can be changed by switching the analog multiplexer (E).

The charging voltage of capacitor (8) 1 is input to the inverting terminal of comparator (G) j, and the non-inverting terminal is given a reference voltage axis), and the charging voltage of capacitor (8) 1 is input to the reference voltage (T).
), the output of the comparator (6) changes from H level to L level. Here, when the contact (b) of the magnetic switch is closed by the remote control device, the transistor IQ (capital) is turned on via the resistor, and both ends of the capacitor and the output of the comparator It is short-circuited and is at L level. However, when the contact (B) is opened, the transistor is turned off, the output of the comparator becomes H level, and the capacitor decoy starts charging at the above-mentioned charging speed. The voltage across the capacitor (6)) is the reference voltage -
After that, it's time to use the comparator! The output of 43) changes from H level to L level again. Thus, only during the period when the comparator (6) is at the L level after the remote control device is turned off, the bidirectional thyristor is in the on state and the dust removal electric motor (6) is energized. The capacitor and resistor A1) were inserted to preset the counter @, and when the remote control is turned on, it presets the output of the counter qθ and starts counting input pulses from there.

Yu is a DC power supply that supplies DC current to the control device even when the remote control device is turned off.

In this way, the operating time after the central cleaner is turned on by the remote control device is counted as a pulse corresponding to the period of the time constant circuit made of a capacitor and a resistor, and the operating time of the dust removal motor is varied according to the counted number. Therefore, if the cleaning time is long, the driving time of the dust removing device will be long), and if the cleaning time is short, the driving time of the dust removing device will also be short.

This is because when cleaning for a long time, the filter (5) is often clogged, so it is necessary to lengthen the dust removal time. In FIG. 5, the change in air volume when dust is removed every time the cleaning is performed is shown as 1 in each song, and the difference from the conventional song Samurai (2) in which dust removal is not performed is obvious.

Effects of the Invention As is clear from the above explanation, according to the central cleaner dust removal device of the present invention, during each cleaning, the dust removal motor is activated to automatically remove dust from the filter according to the usage time. Because it is carried out regularly, the filter is unclogged and
The performance of the cleaner does not deteriorate over a long period JvJ, and it is possible to provide a central cleaner that is superior in terms of usability and performance compared to conventional cleaners.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a central cleaner, FIGS. a) (1) B) is a waveform diagram of each part, and Fig. 5 is a glass showing the relationship between air volume and usage time. (1) is the central cleaner body, (J4. is the tensioner, ση is the resistance, ) is the counter, and I4J+ is the electric motor for removal. Patent applicant Figure 7 Figure 4 Figure 5 Figure T()-1)

Claims (2)

[Claims] (1) A time constant circuit consisting of a resistor and a capacitor is provided to integrate the operating time of the cleaner, and the energization time to the dust removal motor is varied according to the operating time of the cleaner detected by the degree of charge of this time constant circuit. A central cleaner dust removal device configured as follows. (2) A patent claim in which the time constant circuit is repeatedly charged and discharged, the number of times of charging and discharging is counted by a counter, and the energization time to the dust removal motor is varied according to the number of generated pulses. A central cleaner dust removal device according to scope 1.