JPS6188790A - Phase controller of cleaning device - Google Patents

Abstract

PURPOSE:To commonly use 50/60Hz by phase-controlling a control rectifier so that the value proportional to the power consumption of a motor driven blower approaches a target power consumption. CONSTITUTION:A motor driven blower 101 and a bidirectional thyristor 102 are connected in series with an AC power source. A voltage detector 103 detects the effective voltage V of the blower 101, and a square circuit 104 outputs a voltage of the level squared from the value. A comparator 105 outputs a control signal to a phase controller 107 so that the output of the circuit 104 coincides with the value of an input setter 106. Thus, the 50/60Hz input characteristic can be coincided to commonly use 50/60Hz.

Description

DETAILED DESCRIPTION OF THE INVENTION This field of industrial application relates to a phase control fIIPi arrangement for vacuum cleaners used in general households.

Conventional configuration and problems thereof Conventionally, this type of phase shifter 11111 device has been configured as shown in FIG. In FIG. 4, 1 is a suppressor, an electric blower, and 2 is a main bidirectional thyristor, which are connected in series between AC power sources. Reference numeral 3 denotes a hand switch section at the end of the hose, which is composed of a series circuit of a switch 4 and a variable resistor 5. The circuit of the hand switch section 3 is connected to one end of a current limiting resistor 6.7, and the other end of the resistor 7 is connected to a capacitor 8, so that the charging speed of the capacitor 8 is determined according to the value of the variable resistor 5 of the hand switch section 3. It is configured so that it can be changed.

Here, when the voltage across the terminals of the capacitor 8 reaches the breakover voltage of the element 9, the charge of the capacitor 8 flows into the gate terminal of the high-sensitivity bidirectional thyristor 10 via the trigger element 9, resulting in high-sensitivity bidirectional thyristor 10. The thyristor 10 turns on and the main bidirectional thyristor 2 is turned on via the resistor 11.
is also turned on, power is supplied to the electric feeder 1!111, and it starts rotating.

According to the above circuit configuration, since the charging time of the capacitor 8 can be varied by varying the variable resistor 5 of the hand switch section 3, the trigger timing of the highly sensitive bidirectional Zyrister 10 can be controlled, and the phase of the number of cleanings can be controlled. becomes possible.

However, with such a configuration, the power frequency is 501-(
Currently, there is a problem that the power consumption of electric transmission is different between Z and 60 Hz, making it difficult to share them.

FIG. 5 shows this relationship. If we take the resistance value of the variable resistor 5 of the hand switch section 3 on the horizontal axis and the power consumption of the electric blower 1 on the vertical axis, it can be seen that the characteristic 12 at 601-1z is different from the characteristic 13 at 5OH12. For this reason, in the past, the variable resistor 5 was set separately for 50Hz and 301-1z, so even for the same model of vacuum cleaner, there were two types, 50H7 and 601-1z. In addition to poor serviceability, this is also a bottleneck in production.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a phase control device that can be used commonly for 50 Hz and 60 Hz.

Structure of the Invention The phase control device for the rhyme/diagram of the present invention is an electric transmission J! The electric blower obtained by inserting a Ri (+ control rectifier) in series with another power supply circuit, and squaring the detected value proportional to the effective voltage between both ends of the electric blower nail 1 through this control +11 rectifier is The phase shifter 11 is configured so that the value proportional to the power consumption approaches the value corresponding to the target power set in the input setting section, so that it can be used commonly for 50Hz and 6Of-1z. Features.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 shows a block diagram of a phase control device.

In FIG. 1, an electric blower W 101 and a bidirectional thyristor 102 are connected in series to an AC power source. A voltage detection section 103 that detects the effective voltage between both terminals of the electric blower 101 is connected to both ends of the electric blower filfi 101, and its output is connected to a squaring circuit 104. That is, if the effective voltage of the electric blower WAR 101 is V, the square circuit output will be a value proportional to V2, and the electric blower WAR 101 will have a value proportional to V2.
01 power consumption will be detected. Square circuit 104
The output of is input to one input terminal of the comparator 105, and the output voltage of the input setting section 106 is applied to the other input terminal of the comparator 105. The output of the comparator 105 is input to the gate terminal of the bidirectional thyrisk 102 via the phase control section 107.

1 (In terms of configuration, electric blower @ 101 effective voltage V
is detected by the voltage detection unit 103, and the value is sent to the square circuit 104.
The voltage at a level proportional to v2 is squared by the square circuit 10.
This occurs in the output of 4. This is because the electric blower is proportional to the power consumption W (=V2 /ROCV2: R is the impedance of the electric blower) of 101, and the manual setting section 1
It is connected to the input of the comparator 105 so as to be compared with the value of 06, and is controlled by the phase Lll group section 107 so that the output of the squaring circuit 104 matches the value of the input setting section 106.

In this way, by varying the manual setting section 106,
Since the power consumption of the electric power supply 101 is added to that value, it becomes possible to uniformly set the input regardless of the power supply frequency of RI01-12, [1OH2].
The figure shows the input characteristics when the phase control device of FIG. 1 is used. In the figure, if the horizontal axis is the value of the input setting unit 106 and the vertical axis is the power consumption 101 of the electric blower, it can be seen that the characteristics 108 of 50H7 and the characteristics 109 of 60) 1z are almost the same. Characteristic 110 is a 60 Hz input characteristic curve when using a conventional phase control device. In this way, 50, . Match the input characteristics of 60Hz V
However, phase control can be performed.

Figure 3 shows the specific example shown in Figure 1. Electric [)J Exhibit 103 is a diode 111, a resistor 112, and a capacitor 113.
When the effective voltage of the electric blower 11101 changes, the capacitor 113
0 voltage changes. That is, the voltage across the capacitor 113 changes in proportion to the effective voltage of the electric blower i 101. Resistor 114 is a discharge resistance of capacitor 113.

The voltage across the terminals of the capacitor 113 produces an output proportional to the power consumption of the electric blower 101 via the square circuit 104, and is applied to one input terminal of the comparator 105. In addition, the output of the variable resistor 115 as the input 82 constant part 106 is indicated as the base 4+ voltage at the input jJ terminal on the <W side.
n has been done. The output of the comparator 105 is transmitted to the phase control section 10.
7) f timing; input to the l constant circuit 116. Trigger 9 (setting circuit 11G+, capacitor 117 and resistor 1.'5 ii8-(, lj, l is configured to set the charging speed of the charging 7ffi l'lTl path, and both sides are connected via trigger terminal 119. Tropical Cyrisk+
The trib i timing setting circuit 116 operates so that the input voltages of the comparator 10') are equalized, and the variable resistor 115 operates to adjust the timing for commuting to work [1101]. You can freely change the power consumption.

Effect of invention 1~i+'J'! '! As shown in FIG.
The rectifying element is set by square of the detected value proportional to the effective voltage between both ends of the electric blower (the value proportional to the power consumption of the electric blower is set in the input setting section ← 2! = target power. f: place 4 [f fi, II 13
tl, it is possible to completely match the input characteristics of 50/60H7. 10 6O
Since f-IZ can be shared, both productivity and serviceability can be improved.5011711jjl
Since the same model can be used for the Q and GOt-17 regions, there is an advantage that the consumer can use it in different regions, and its practical value is extremely high.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, FIG. 1 is a block diagram of the phase control device of the present invention, and FIG. 2 is an input characteristic diagram of 50/601-(Z) of the device shown in FIG. , Fig. 3 shows a specific circuit diagram of Fig. 1. Fig. 4 is a block diagram of a conventional phase control device, and Fig. 5 is a 50/60Hz input characteristic diagram of the device shown in Fig. 4. 101...・Electric transmission Jlltjl, 102...Both internal pressure sirisk [control rectifier], 103...Voltage detection section, 104...Squaring circuit, 105...Comparator, 10
6...Input setting section, 107...Phase control section agent Yoshihiro MorimotoFigure 1Figure 2Figure 3Figure 4

Claims (1)

[Claims] 1. A control rectifying element is inserted in series with the power supply circuit of the electric blower, and this control rectifying element is proportional to the power consumption of the electric blower, which is obtained by squaring the detected value that is proportional to the effective voltage across the electric blower. A phase control device for a cleaning opening configured to perform phase control so that a detected value approaches a value corresponding to a target power set in an input setting section.