JP2000139792A - Voltage control circuit for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize consumed electric power by impressing a control signal so that electric energy which is impressed on a motor is retained lower than a specified level in the initial motion of a vacuum cleaner and variably controlling the control signals in accordance with a deviation between a preset electric energy and an actual energy of the motor. SOLUTION: A volume switch 102 is controlled to clean at a required vacuum force when running a vaccum cleaner. During operation, a microcomputer 110 impresses a control signal to the gate terminal of a Triac 106, and in this time, the control signal is impressed so that the consumed energy of the motor M can be retained below 1,150 W. In this way, a vacuum force necessary for actuating the vacuum cleaner is generated therein. When a load increases due to suction of dust and the vacuum force decreases, the decrease of vacuum force is detected by voltage information of the AC source 104 inputted through an input terminal P10 and current information of the motor M obtained through the Triac 106, and the control signal is variably controlled in accordance with the voltage deviation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner capable of minimizing power consumption of a vacuum cleaner by maintaining an initial input voltage of the vacuum cleaner below a certain level. In the voltage control circuit.

[0002]

2. Description of the Related Art Generally, a vacuum cleaner is a vacuum cleaner that sucks dust or the like by using a vacuum force generated by a rotating force of a motor.

In such a vacuum cleaner, a vacuum power can be selected by changing a level of a power applied to a motor according to a user's intention. However, during the initial operation of the vacuum cleaner, no matter what level the user selects, the vacuum cleaner applies a power input at a maximum value to generate a vacuum force as shown in FIG.

In addition, during the suction operation of the vacuum cleaner, the vacuum force is instantaneously greatly reduced by a load such as dust, and the suction operation of the vacuum cleaner is actually performed at a power level very low as compared with the initial input value of the power supply. Is done.

That is, the input value of the initial power supply of the vacuum cleaner is excessively high and occupies most of the power consumption of the vacuum cleaner.

[0006]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problems of the prior art, and an object of the present invention is to maintain an initial input voltage of a vacuum cleaner below a certain level. It is an object of the present invention to provide a voltage control circuit of a vacuum cleaner that can minimize power consumption of the vacuum cleaner.

It is another object of the present invention to provide a voltage control circuit of a vacuum cleaner capable of maintaining the vacuum force of the vacuum cleaner at a constant level by changing the input voltage level according to the change of the vacuum force of the vacuum cleaner. There is a purpose.

[0008]

According to the present invention, there is provided a voltage control circuit for a vacuum cleaner according to the present invention, comprising: a volume switch for selecting an output level of the vacuum cleaner; A motor for generating a force, a control switch for controlling the AC power applied to the motor according to a control signal, and a DC level for reducing a voltage level of the AC power applied to the motor. Voltage control means for converting and outputting the control signal, and applying the control signal to the control switch to control the AC power applied to the motor according to the selection level of the volume switch. The control signal to the control switch so that the amount of power applied to the motor during the initial operation of the motor is maintained at a predetermined level or less. In addition, during normal operation of the vacuum cleaner, the amount of power set through the volume switch and the current information of the motor obtained through the control switch and the voltage information obtained from the voltage detecting means are obtained. Control means for variably providing the control signal so that the amount of power applied to the motor corresponds to the amount of power set through the volume switch since the actual amount of power of the motor is compared with the current amount of power. Including.

[0009]

According to the circuit of the present invention having such a configuration, the level of the initial power applied to the motor for generating the vacuum force during the initial operation of the vacuum cleaner can be maintained at a certain level or less. Further, when the vacuum force is reduced by a load such as dust during the suction operation of the vacuum cleaner, the level of the power applied to the motor can be variably increased. Therefore, the power consumption of the vacuum cleaner can be minimized, and the vacuum power can be maintained at a certain level.

The above objects and other features and advantages of the present invention will become apparent from the following description of some preferred embodiments of the present invention to which reference is now made.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the configuration and operation of a voltage control circuit of a vacuum cleaner according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 2 is a circuit diagram showing a configuration of the voltage control circuit of the vacuum cleaner according to the first embodiment of the present invention.

Referring to FIG. 2, a voltage control circuit of a vacuum cleaner according to a first embodiment of the present invention includes a main body 100 of the vacuum cleaner and a volume switch 102 for a user to select a vacuum force for cleaning. Are classified.

The main body 100 includes a voltage detecting unit 108 for inserting a plug of a vacuum cleaner, stepping down an AC power supply 104 applied from the outside, converting the AC power supply 104 into a DC power supply, and outputting the DC power supply. And a triac 10 for controlling the AC power supply 104 applied to the motor M in response to the control signal of
6, a motor M for generating a vacuum force driven by an AC power supply 104 provided through the AC power supply 6, and detecting a selection level of the volume switch 102 selected by the user, and the corresponding AC power supply 104 The control signal is applied to the triac 106 so as to be applied to the M. When the vacuum cleaner is initially driven, the triac 106 is controlled so that the amount of power of the AC power supply 104 applied to the motor M is maintained at a predetermined level or less. At the time of normal operation of the vacuum cleaner, the selection level selected by the user, the current information of the motor M obtained through the triac 106, and the AC power supply 104 obtained through the voltage detection means 108. By comparing the actual electric energy of the current motor M obtained using the voltage information, Triac said control signal so that the amount of power corresponding to the level is applied to the motor M 1
06.

Here, the voltage detecting unit 108 is connected to the AC power supply 10.
4, a diode D for half-wave rectifying the AC power supply induced on the secondary side of the transformer TR, and a first for smoothing the output from the diode D.
And second capacitors C1 and C2, and first and second resistors R for dividing the output signal smoothed by the first and second capacitors C1 and C2 and outputting to the microcomputer 110.
1, R2.

The operation of the voltage control circuit of the vacuum cleaner according to the first embodiment of the present invention will now be described in more detail with reference to FIGS. FIG. 4 is a graph showing characteristics of an initial input voltage of a voltage control circuit of a vacuum cleaner according to the present invention.

First, the user connects a plug (not shown) of the vacuum cleaner to a power source in order to use the vacuum cleaner, and operates the volume switch 102 to perform cleaning with the desired vacuum force. Control.

The microcomputer 110 senses that the user intends to operate the vacuum cleaner by sensing the level of the volume switch 102 controlled by the user through two input terminals P1 and P2.

Therefore, the microcomputer 110 applies the control signal at the gate terminal of the triac 106, but applies the control signal so that the power consumption of the motor M can be maintained at 1150 watts or less.

When the triac 106 is energized by the control signal from the microcomputer 110, the motor M is driven by the AC power supply 104 to generate a vacuum force necessary for performing a cleaning operation, and the vacuum cleaner Perform normal operation.

However, when the user brings a suction brush (not shown) close to a cleaning part in order to suck dust or the like with the vacuum cleaner, the vacuum force is reduced by a dust-like load.

The microcomputer 110 can detect such a decrease in vacuum force based on voltage information of the AC power supply 104 input through the input terminal P10 and current information of the motor M obtained through the triac 106.

More specifically, the AC power supply stepped down by the transformer TR is half-wave rectified by the diode D and smoothed by the first and second capacitors C1 and C2. The voltage is divided by the first and second resistors R1 and R2, converted into a DC power, and applied to another input terminal P10 of the microcomputer 110.

The microcomputer 110 receives current information from the motor M through the triac 106 which is energized in both directions.

Therefore, the microcomputer 110 has an input terminal "
The current voltage information of the AC power supply 104 input through P10 "and the motor M obtained through the triac 106
, The actual electric energy of the motor M can be detected.

The required power of the motor M corresponding to each of the multiple selection levels of the volume switch 102 has already been set in the microcomputer 110.

That is, the user selects a "medium" level from a number of selection levels of the volume switch 102, and generates 500 watts by the motor M to generate a vacuum force corresponding to the "medium" level. Suppose that the power amount is required.

However, during normal operation of the vacuum cleaner, the current information of the motor M is "10" and the AC power supply 10
Assuming that the voltage information of No. 4 is "10", the power consumption of the motor M is only 100 watts. That is, the motor M cannot generate a vacuum force corresponding to the "medium" level selected by the user.

Therefore, the microcomputer 110 uses the motor M
The control signal is applied at the gate terminal of the triac 106 so that the power consumption of the triac 106 can reach 500 watts. That is, the microcomputer 110 applies the control signal so that the amount of power applied to the motor M during the initial operation of the vacuum cleaner is maintained at 1150 watts or less as shown in FIG. During normal operation of the machine, the amount of power applied to the motor M is controlled so that a vacuum force corresponding to the output level selected by the user is generated.

As described above, the microcomputer 110 can always detect the level of the AC power supply 104 applied to the motor M,
The AC power supply 104 maintains a constant level so as to correspond to the output level set by the user.

FIG. 3 is a circuit diagram showing a configuration of a voltage control circuit of a vacuum cleaner according to a second embodiment of the present invention. As shown in FIG. 3, the voltage control circuit of the vacuum cleaner according to the second embodiment of the present invention has components performing the same functions as those of the first embodiment.

That is, in the second embodiment, the voltage detecting section 208 includes a resistor R3 for stepping down the AC power supply 204,
A diode D for half-wave rectifying the stepped-down AC power supply 204, and a first diode D for smoothing the half-wave rectified signal.
And second capacitors C1 and C2, and first and second resistors R1 and R2 for dividing the smoothed signal.

However, in the second embodiment, the diode D
First and second capacitors C1, C2 and first and second capacitors C1, C2
The resistors R1 and R2 are connected in series with each other, and their functions are the same as those of the voltage detection unit 108 of the first embodiment.

Further, other components of the second embodiment, for example,
Each function of the triac 206, the microcomputer 210, the motor M, and the volume switch 202 is also the first function.
Performs the same functions as those of the embodiment.

[0034]

As described above, in the voltage control circuit of the vacuum cleaner according to the present invention, the level of the initial power supply applied to the motor for generating the vacuum force during the initial operation of the vacuum cleaner is constant. Maintained below.

When the vacuum force is reduced by a load such as dust during the suction operation of the vacuum cleaner, the level of the power applied to the motor is variably increased.

Accordingly, there is an advantage that the power consumption of the vacuum cleaner can be minimized and the vacuum power can be maintained at a constant level.

Although the present invention has been described in detail with reference to the embodiments, the present invention is not limited to the embodiments, and any person having ordinary knowledge in the technical field to which the present invention belongs may depart from the spirit and spirit of the present invention. Rather, the invention could be modified or changed.

[Brief description of the drawings]

FIG. 1 is a graph showing characteristics of an initial input voltage of a conventional vacuum cleaner.

FIG. 2 is a circuit diagram showing a configuration of a voltage control circuit of the vacuum cleaner according to the first embodiment of the present invention.

FIG. 3 is a circuit diagram illustrating a configuration of a voltage control circuit of a vacuum cleaner according to a second embodiment of the present invention.

FIG. 4 is a graph showing characteristics of an initial input voltage of a voltage control circuit of a vacuum cleaner according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Body 102 Volume switch 104 AC power supply 106 Triac 108 Voltage detector 110 Microcomputer C1, C2 First and second capacitors D Diode M Motor P1, P2 Input terminal TR Transformer R1, R2 First and second resistance

Claims (3)

[Claims] 1. A volume switch for selecting an output level of a vacuum cleaner, a motor driven by an AC power supply to generate a vacuum force, and the AC power supply applied to the motor according to a control signal A control switch for controlling a voltage of the AC power supply applied to the motor, a voltage detecting means for converting the voltage level into a DC level and outputting the converted DC level, and a selection level of the volume switch. The control signal is applied by the control switch to control the AC power applied to the motor, but the power amount applied to the motor during the initial operation of the vacuum cleaner is maintained at a predetermined level or less. A control signal is applied to the control switch, and during normal operation of the vacuum cleaner, a voltage set through the volume switch is set. The amount of power applied to the motor by comparing the amount of power and the current amount of current power of the motor obtained using the current information of the motor obtained through the control switch and the voltage information obtained from the voltage detecting means. A control means for variably providing the control signal so as to correspond to the amount of power set through the volume switch. 2. The voltage control circuit according to claim 1, wherein the predetermined level of power is 1150 watts. 3. A transformer for stepping down the AC power supply, a rectifier for half-wave rectifying an output from a secondary side of the transformer, and smoothing an output from the rectifier. The voltage control circuit for a vacuum cleaner according to claim 1, further comprising: a smoothing unit for performing a voltage dividing operation and a voltage dividing unit for dividing an output from the smoothing unit and outputting the divided voltage to the control unit.