JPH01110338A - Electric cleaner - Google Patents

Abstract

PURPOSE: To achieve a cleaning quietly and efficiently with a saving of power by controlling the number of revolutions of a motor for driving a fan provided on a body and that of a motor for a rotary brush of a floor surface suction device provided thereon by a signal from a photodetecting part provided in an air path through which dust flows. CONSTITUTION: As dirts pass through a tip pie 28, light is intercepted from a light emitting element 31 provided in the pipe 28 to keep light from entering a light emitting element 32. This condition is captured by a dirt detection circuit 35 and a signal is sent to a phase control circuit 33 to apply a voltage to a motor 25 for driving a fan through a bidirectional thyristor 34 so that the number of revolutions of the motor rises from a normal low number when no dirt exists. After the passage of the dirts, the number of revolutions returns to the normal number again. At this point, since a motor 23 for a rotary brush is connected in parallel to the motor 25 for driving the fan and in series to the bidirectional thyristor 34, the numbers of revolutions of the motors 23 and 25 rise or fall simultaneously with the passage of the dirts.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vacuum cleaner that detects dust passing through an air passage of the vacuum cleaner and controls the input of the motor.

2. Description of the Related Art A conventional vacuum cleaner of this type will be explained with reference to the drawings. In Fig. 4, 1 is the floor suction tool of the vacuum cleaner, and 2
is a rotating brush motor for rotating a rotating brush attached to a floor suction device. Reference numeral 3 denotes a hand control unit of the vacuum cleaner, which includes a switch 4 for turning on and off the operation of the rotary brush motor 2, and a switch 4 for controlling the rotation speed of the fan drive motor 6 inside the main body 6 of the vacuum cleaner. It is equipped with a variable resistor 7.

8 is a phase control circuit that receives a signal from the variable resistor 7 and performs phase control, and 9 is a bidirectional thyristor that controls the phase of the voltage applied to the motor 6 based on the signal from the phase control circuit 8.

Reference numeral 10 indicates an I and an ED provided in the hand-held operation unit 1. Reference numeral 11 indicates a phototransistor, which sends a signal indicating whether or not dirt has passed to a dust detection circuit 12.
The rotational speed of the motor 6 is controlled through a phase control circuit 8.

13 is a power source. In addition, as a means of knowing whether or not garbage has passed, as in Japanese Patent Publication No. 61-213030,
There was one that used an ED and a phototransistor to display the passage of dust on a handheld control panel.

The operation of the vacuum cleaner configured as described above will be described below.

When dust is detected by the LEDlo and the phototransistor 11 provided in the hand control unit 3, the phase control circuit 8
A signal is sent to the motor 6, a voltage is applied to the motor 6 through the bidirectional thyristor 9, and the rotation speed of the motor 6 automatically increases and decreases again after the dust has passed. Further, by operating the variable resistor 7, the rotation speed of the motor 6 can be changed in the same manner.

Further, when the floor surface is a carpet, the rotary brush motor 2 can be rotated by turning on the switch 4 of the hand-held operation section 3.

Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, the rotary brush motor 2 moves at a constant rotation even when the rotation speed of the motor 6 is small. The suction tool 1 had a drawback of high noise. Furthermore, power consumption was also wasted. Furthermore, as shown in Japanese Patent Publication No. 61-213030, which is another conventional example, merely displaying the passage of dust does not improve the actual usability.

In view of the above-mentioned problems, the present invention provides a vacuum cleaner that can clean quietly and efficiently while saving power.

Means for solving the problems The technical means of the present invention for solving the above problems are as follows:
A light-emitting part and a light-receiving part that receives light from the light-emitting part and outputs a signal are provided facing each other in an air passage through which dust flows,
The rotation speed of the fan drive motor provided in the main body and the rotation speed of the rotating brush motor of the floor suction device are controlled by signals from the light receiving section.

Effect This effect is as follows. When no dust is being sucked in, the motor rotation speed is low, and the rotation speed of the motor for the 9-rotation brush of the floor suction device is also reduced, resulting in less power consumption and quieter operation. It is. Furthermore, efficient cleaning and the effect of not damaging the object can also be achieved.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to FIGS. 1 to 3. Reference numeral 21 denotes a floor suction tool of a vacuum cleaner, which includes a rotating brush 22 and a rotating brush motor 23 for rotating the rotating brush.

Reference numeral 24 denotes a main body that includes a fan drive motor 26 and the like, and a hose 26 is detachably provided in front of the main body. 27 is an extension pipe.

It is attached to the hose 26 via a tip pipe 28 fixed to the hose 26.

The tip pipe 28 is equipped with a variable resistor 29 for controlling the rotation speed of the motor 25 and a switch 3o for turning on and off the operation of the rotary brush motor 23. Further, inside thereof, a light emitting element 31 and a light receiving element 32 are provided so as to face each other.

33 is a phase control circuit provided inside the main body 24;
is a bidirectional thyristor for controlling the phase of the voltage applied to the fan drive motor 25 and the rotating brush motor 23 based on the signal from the phase control circuit 33.

36 is a phase control circuit 3 which receives input from the light receiving element 32.
This is a dust detection circuit that sends a signal to 3. 36 is a power source.

Regarding the vacuum cleaner configured as above, the operation thereof will be explained below.

When dust passes inside the tip pipe 28, the light emitting element 3
The light from 1 is blocked and no light enters the light receiving element 32. The dust detection circuit 36 catches this, and the signal is sent to the phase control circuit 33, and the bidirectional thyristor 34
Voltage is applied to the fan drive motor 26 through
The rotational speed increases from the normal low state without dirt. After the dust passes, it returns to its normal low state again. In other words, the rotation speed of the fan drive motor 26 increases or decreases depending on the presence or absence of dust on the floor.

At this time, if the switch 3o, which controls the rotary brush motor 23 of the floor suction tool 21, is set to ○N, the rotary brush motor 23 starts rotating. Here, since the rotary brush motor 23 is connected in parallel with the fan drive motor 25 and in series with the bidirectional thyristor 34, the rotational speed of both motors 23 and 25 decreases due to the passage of dust. It goes up and down at the same time.

Further, the rotational speed of both motors 23 and 25 can be adjusted manually using a variable resistor 29 provided on the tip pipe 28.

As described above, according to this embodiment, both the fan drive motor 25 and the rotary brush motor 23 can be controlled, and when the floor surface is clean and free of dust, the rotation speed of both is low, resulting in unnecessary consumption. It eliminates electricity and also keeps noise low.

When the dust on the floor is cleared during cleaning, both the main unit 24 and the floor suction device 21 become silent, allowing the user to grasp the dirty state of the floor and move to the next location. . Therefore, very efficient cleaning is possible and cleaning time can be shortened.

Effects of the Invention As described above, the present invention provides a light-emitting section and a light-receiving section that receives light from the light-emitting section facing each other in an air passage through which dust flows, and a signal from the light-receiving section is used to send signals to the main body. By controlling the rotation speed of the provided fan drive motor and the rotation speed of the rotating brush motor, the following effects are achieved.

■ Less power consumption.

■　Lower noise.

■ The level of dirt on the floor can be determined by changes in the sound of both motors, allowing for appropriate movement of the floor, enabling efficient cleaning, and reducing cleaning time.

Dish: Less damage to the object being cleaned.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a vacuum cleaner according to an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a circuit diagram of the same, and Fig. 3 is a conventional vacuum cleaner. FIG. 21'...Floor suction tool, 22...Rotating brush, 23...Rotating brush motor, 24
...Main body, 25...Fan drive motor, 31...Light emitting element, 32...Light receiving element, 33...Phase control circuit , 36...
...dust detection circuit.

Claims (1)

[Claims] A light-emitting part and a light-receiving part that receives light from the light-emitting part and outputs a signal are installed facing each other in the air passage where dust flows, and the signal from the light-receiving part is used to drive the fan drive motor installed in the main body. A vacuum cleaner that controls the rotation speed and the rotation speed of a rotating brush motor provided in a floor suction device.