JPH11239707A - Control device for all day operating apparatus and air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption at high and noise of an electrical apparatus from the electrical apparatus such as a motor for air cleaning which is operated for twenty four hours during the time when people are sleeping. SOLUTION: The control device for a11 day operating apparatus is equipped with a motor 5 for air cleaning which cleans air for twenty four hours, an optical sensor 11 detecting illuminating light or sunlight in the vicinity of the place where the motor 5 is instaled and a control unit 12 which operate and controls the motor 5 on the basis of a light-detecting signal S1 by the optical sensor 11. When illminating light or sunlight exists in the vicinity of the place where the device is instaled, the motor 5 is continuously operated. When illuminating light or sunlight does not exist in the vicinity of the place where the device is installed, the motor is controlled so as to be intermittently operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an all-day operation device and an air purification device suitable for use in electric devices such as a motor for air cleaning that are operated all day and night.

More specifically, when there is illumination light or sunlight near a place where an electric device such as an air purifying motor is installed, the electric device is continuously operated, and illumination light or sunlight is placed near the installation position. When there is no such device, the electric device is operated intermittently so that power consumption can be reduced, and noise from the electric device can be reduced while sleeping.

[0003]

2. Description of the Related Art In recent years, air purifiers for purifying air in bedrooms and living rooms have been increasingly used in general homes and hospitals. This type of air purifier is provided with an operation switch for setting an operation mode. For example, when the operation mode is set to “continuous”, the air purifier can be operated continuously 24 hours a day throughout the day and night. Can be.

[0004]

However, according to the conventional air purifying apparatus, once the operation mode is set to "continuous", the load of the air purifying motor or the like is reduced to two per day.
Because it is driven for 4 hours continuously, it consumes motor power in the same way as during the daytime even during the night when dust and the like in the room are calmed down compared to the daytime, and due to the rotational noise of the motor (hereinafter also referred to as electric equipment) There is a problem that the sleeping environment is adversely affected.

In view of the above, the present invention has been made to solve the above-mentioned conventional problems, and is intended to reduce the nighttime power consumption of electric equipment such as an air purifying motor which is operated all day and to sleep. An object of the present invention is to provide a control device for an all-day operation device and an air purifying device capable of reducing noise from the electric device in the middle or the like.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a control device for an all-day operation device according to the present invention is a device for controlling an electric device which is operated throughout the day and night. Detecting means for detecting illuminating light or sunlight in the vicinity of the place, and control means for controlling the operation of the electric device based on the light detection information by the detecting means. If there is illumination light or sunlight in the vicinity, control the electrical equipment to operate continuously, and if there is no illumination light or sunlight near the installation location of the electrical equipment, control the electrical equipment to operate intermittently. It is a feature.

[0007] According to the control apparatus of the all-day operation equipment according to the present invention, for example, the electric equipment installed in the bedroom or the like is turned on until the interior of the bedroom becomes bright after the lighting of the bedroom is turned off. Since the devices and the like can be operated intermittently, power consumption of the electric devices at night can be reduced, and noise from the electric devices can be intermittently eliminated. Therefore, the control device for an all-day operation device according to the present invention can be sufficiently applied to electric devices such as an air purifier that is required to be operated all day throughout the day and night.

The air purifying apparatus of the present invention comprises at least air purifying means for purifying air, detecting means for detecting illumination light or sunlight near the place where the air purifying means is installed, and the detecting means. Control means for controlling the operation of the air cleaning means based on the light detection information, wherein the control means continuously operates the air cleaning means when there is illumination light or sunlight near the place where the apparatus is installed. When there is no illuminating light or sunlight near the installation location of the present apparatus, the air purifying means is controlled to operate intermittently.

According to the air purifying device of the present invention, for example, when the device is installed in a bedroom or the like, when the lighting of the bedroom at night is turned off, the sunlight enters the bedroom and the room becomes brighter. Or the air purifying means can be operated intermittently until the lighting equipment in the room is turned on, so that the power consumption of the apparatus at night such as when sleeping can be reduced and the noise from the air purifying means can be reduced. Can be erased intermittently. Therefore, it is possible to provide a low power consumption type and low noise type air cleaning device.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a control device for an all-day operation device and an air purifying device according to the present invention will be described with reference to an air purifying device to which the control device is applied.
This will be described in detail with reference to the drawings.

(1) Air Purification Applied to All Day Operation Equipment Control Apparatus FIG. 1 shows an air purification apparatus 10 according to each embodiment of the present invention.
It is a perspective view which shows a structure of. In this embodiment, when there is illumination light or sunlight near a place where an electric device such as a motor for air cleaning is installed, the electric device is continuously operated, and there is no illumination light or sunlight at the installation location. In such a case, the electric device can be operated intermittently to reduce the power consumption, and the noise from the electric device can be reduced intermittently while sleeping.

The air purifier 10 as an all-day operation device according to the present invention is like a kind of air conditioner for purifying indoor air throughout the day and night. As shown in FIG. 1, the air purifying apparatus (air purifying means) 10 has a rectangular column-shaped cabinet 1 having a flat front surface. An intake port 2 is provided on the front surface of the cabinet 1 and is formed in a lattice shape so that air can be taken into the cabinet 1 from the outside.

A filter 3 is provided on the rear surface of the intake port 2 to clean the externally contaminated air 10A. On the rear surface of the filter 3, for example, a sirocco fan 4 is provided. In this example, a motor 5 is mounted on the front surface (intake side) of the fan 4 so that air is sucked in from the motor axial direction and exhausted in the tangential direction of the fan 4. Motor 5
For example, an AC motor of a shaded type or a condenser type driven at 100 V AC is used. Of course, in this example, an intermittent operation in units of hours or minutes is assumed, so that a so-called inverter motor for DC driving can be applied.

An exhaust port 6 is provided at the upper part of the cabinet 1 to exhaust the purified air 10B. Exhaust port 6
Has a lattice shape so that foreign matter does not enter the inside of the cabinet 1 from the outside. A leg 1B is provided on the bottom surface of the cabinet 1, and the apparatus 10 is installed and used indoors.

On the upper right side of the cabinet 1, an operation panel 7 is provided as setting means. Operation panel 7
Is provided with an optical sensor 11 as a detecting means, and detects illumination light or sunlight near the place where the air cleaning device 10 is installed. As the optical sensor 11, an ultraviolet sensor or the like is used. The operation panel 7 has an optical sensor 1
1, a power switch SW1, a liquid crystal display 16 for displaying a message such as an alarm, input keys 17A and 17B for setting initial values, an LED 18 for operation display, and the like.

On the right side inside the cabinet 1, there is provided a control board 8 having wiring leading to an AC plug 9. The control board 8 includes a control device 100 for the all-day operation equipment shown in FIG.
Is mounted.

The AC plug 9 has a power switch SW1
The power switch SW1 is connected to the motor switch SW2 and the control unit 12. The motor switch SW2 has a fan driving motor 5 as described above.
Is connected, and on / off control of the motor switch SW2 is performed based on the switch control signal S3. A so-called relay (relay) is used for the motor switch SW2.
In this example, the motor 5 is operated intermittently in units of hours or minutes.

The control unit 12 is provided with a power supply 13 for converting 100 V AC to a DC voltage VCC for control of, for example, 5 V DC. DC voltage VCC from power supply unit 13
Are supplied to a micro computer (hereinafter referred to as a microcomputer) 14 as a control means, a switch control unit 15, and an LED 18. A switch control unit 15 is connected to an output stage of the microcomputer 14 connected to the optical sensor 11, and the operation of the motor 5 is controlled based on a light detection signal S1 from the optical sensor 11.

Next, the operation of the air cleaning device 10 will be described with reference to FIGS. In this example, as shown in the time chart of FIG. 3, when there is illumination light or sunlight near the place where the air cleaning device 10 is installed, the air cleaning motor 5 is continuously operated and the installation is performed. When there is no illumination light or sunlight at the place, the motor 5 is operated intermittently.

First, the AC plug 9 is connected to an AC outlet (not shown) for a power supply voltage of 100 V, and the power switch SW1 is connected in step A1 of the flowchart shown in FIG.
Is turned on, the motor 5 shown in FIG. 1 is driven. The rotation of the motor 5 causes the fan 4 to rotate,
Air cleaning is started. Thereafter, in step A2, the microcomputer 14 inputs the light detection signal (light detection information) S1, and in step A3, when there is illumination light or sunlight near the place where the device 10 is installed, the process proceeds to step A4. I do.

In step A4, a light detection signal S1 indicating that there is illumination light or the like is input from the optical sensor 11, so that the microcomputer 14 sends a continuous operation command signal S to the switch control unit 15.
2 is output. The switch control unit 15 continuously turns on the motor switch SW2 by the continuous operation command signal S2, so that the motor 5 is continuously operated.

If it is detected in step A3 that there is no illumination light or sunlight near the installation location of the apparatus 10, the microcomputer 14 sends the intermittent operation command signal S2 bar (the upper line is omitted) to the switch controller 15. Is output. The intermittent operation command signal S2 causes the switch control unit 15 to turn on / off the motor switch SW2 in units of time or simply, so that the motor 5 is operated intermittently.

Thereafter, in step A6, the power switch SW
Until 1 is turned off, the process returns to step A2 and the above flow is repeated. Therefore, for example, when the device 100 is installed in a bedroom or the like, when the lighting of the bedroom at night is turned off, the sunlight is then inserted into the bedroom to make the room brighter, or the lighting equipment in the room is turned on. Until the air purifying motor 5 can be operated intermittently, the power consumption of the device 10 at night such as during sleep can be reduced, and noise from the motor 5 can be intermittently eliminated. Thereby, it is possible to provide the low power consumption type and low noise type air cleaning device 10.

Next, other examples of control by the microcomputer 14 will be described with reference to FIGS. In this example, the motor 5 is continuously operated for a first predetermined time from the time when the illuminating light or sunlight at the installation location of the air purifying device 10 is no longer detected, and the motor 5 starts operating after the first predetermined time has elapsed. Is operated intermittently. In addition, the motor 5 is operated intermittently for a second predetermined time from the time when the illumination light or the sunlight near the installation location of the air cleaning device 10 is detected, and the motor 5 is turned on after the second predetermined time has passed. It is designed to operate continuously.

For example, assuming that the apparatus 10 is installed indoors, the apparatus 10 is operated before going to bed, and the period from bedtime to the next morning is explained, first, step B1 in the flowchart shown in FIG. Then already power switch SW
1 is turned on, the motor 5 shown in FIG.
Is driven to clean the air.

In this state, when the illumination in the room is turned off, the microcomputer 14 inputs a light detection signal S1 indicating that there is no illumination light in step B2. In this example, since it is detected in step B3 that there is no illumination light or sunlight near the installation location of the present apparatus 10, the microcomputer 14 sends the switch control unit 15 the intermittent operation command signal S2 bar (omit the upper line). Is output. However, in this example, without switching immediately from the continuous operation to the intermittent operation, the time when the illumination light and the sunlight are no longer detected in step B4, that is, α time (the first predetermined time) from the time when the light is turned off shown in FIG. 6. Only the motor 5 is continuously operated.

This is designed so that the user at bedtime does not feel uncomfortable due to a change in the state of switching from the continuous continuous motor sound to the intermittent motor sound. In addition, people are active until just before going to bed (lights out), and the air may be dirty. Therefore, continuous operation for a predetermined time rather than intermittent operation immediately makes it more efficient to clean the air. Be transformed into

Then, when the time α has elapsed, step B
5, the motor 5 is operated intermittently from that point.
At this time, the switch control unit 15 intermittently turns on the motor switch SW2 by the intermittent operation command signal S2 bar, so that the motor 5 is operated intermittently.

After that, the time has passed and the next morning, for example, when sunlight enters near the place where the apparatus 10 is installed, the sunlight is supplied to the optical sensor 11 in step B3.
In step B6, the optical sensor 11 outputs a light detection signal S1 to the microcomputer 14 indicating that there is illumination light or the like. The microcomputer 14 having received the light detection signal S1 outputs a continuous operation command signal S2 to the switch control unit 15.

In this example, however, the motor 5 is not switched from the intermittent operation to the continuous operation directly for the β reason (second predetermined time) from the time of the light detection shown in FIG. Is done. When the β time has elapsed, the process proceeds to step B7, and the motor 5 is continuously operated from that point. At this time, since the switch control unit 15 continuously turns on the motor switch SW2 in response to the continuous operation command signal S2, the motor 5 is continuously operated. Then, step B
Step B, until the power switch SW1 is turned off at Step 8.
2 and the above flow is repeated.

As described above, according to the present embodiment, when the apparatus 100 is installed in a bedroom or the like, the lighting of the bedroom at night is turned off, and when α hours have passed since then, the sunlight is returned to the bedroom. Is inserted and the room becomes brighter, or the lighting fixture in the room is turned on, and then β
Until the time elapses, the air cleaning motor 5 can be operated intermittently.

Thus, it is possible to eliminate a sense of discomfort due to the switching of the motor sound at the time of going to bed and at the time of getting up. At the same time, the power consumption of the device 10 at night, such as when sleeping, can be reduced. Also, people are active until just before going to bed (lights out), and the air may be dirty.
Rather than performing intermittent operation immediately, continuous operation for a predetermined time allows air to be effectively purified.

FIGS. 7A to 7D are time charts showing examples of intermittent operation. In this example, attention is paid to the fact that the air in the room while sleeping is gradually calmed down, and the air cleaning efficiency does not decrease even if the operation stop interval of the motor 5 is gradually increased. For example, when the intermittent operation time is 4 hours, the operation stop interval of the motor 5 is gradually increased.

FIG. 7A shows that the motor 5 is rotated for 40 minutes during the first hour, and the motor 5 is rotated for the next 20 minutes.
This is an example of stopping. FIG. 7B is an example in which the motor 5 is rotated for 30 minutes in the next one hour, and the motor 5 is stopped for the next 30 minutes. FIG. 7C shows an example in which the motor 5 is rotated for 20 minutes in the next one hour, and the motor 5 is stopped for the next 40 minutes. FIG. 7D shows that the motor 5 is rotated for 10 minutes during the last hour,
In this example, the motor 5 is stopped for 0 minutes.

As described above, by performing the intermittent operation in which the operation stop interval of the motor 5 per hour is gradually increased, the power consumption of the apparatus 10 at night can be further reduced, and the motor during sleep can be further reduced. Sound can be turned off intermittently.

(2) Air Cleaner Applied with Motor Control Device FIG. 8 is a circuit diagram showing a configuration example of a motor control device 200 according to the present embodiment. This motor control device 200 can be very suitably applied when a DC motor is used for the above-described air cleaning device 10. The motor control device 200 controls the speed of the DC motor 25 shown in FIG. This type of DC motor 25 is a so-called inverter motor whose rotation speed changes when the supply voltage is varied. In this example, D
The DC motor 25 is driven in the range of C5V to 40V.

A speed sensor (TG: tacho generator) 21 as speed detecting means is attached to the DC motor 25, and the rotation speed of the DC motor 25 is detected. The motor detection speed by the speed sensor 21 is binarized and output to a micro computer (hereinafter referred to as a microcomputer) 22 as control means. The output stage of the microcomputer 22 is connected to a voltage adjusting circuit 23 as voltage adjusting means, and adjusts the motor supply voltage V0 based on the voltage / current control signals S11 to S1n from the microcomputer 22.

The voltage adjusting circuit 23 is provided with a voltage varying IC 24 which operates by receiving, for example, 35 VDC from the power supply unit 13 shown in FIG. This voltage variable IC
The 24 input stages include npn-type bipolar transistors (hereinafter simply referred to as transistors) for selecting arbitrary reference resistors R11 to R1n from n reference resistors R11 to R1n.
Q11 to Q1n are connected.

Each of the transistors Q11 to Q1n is selected based on voltage / current control signals S11 to S1n from the microcomputer 22. One end of each of the reference resistors R11 to R1n is connected to a resistor R1, which is a circuit constant, to
Connected to C. The other ends of the reference resistors R11 to R1n are connected to the collectors of the transistors Q11 to Q1n, and the emitters are connected to the ground line GND. The bases of the transistors Q11 to Q1n are connected to the microcomputer 22, and supplied with voltage / current control signals S11 to S1n.

The output stage of the voltage variable IC 24 includes:
An npn-type bipolar transistor (hereinafter simply referred to as a transistor) Q0 for voltage adjustment is connected via protection diode Dz. The collector of the transistor Q0 is connected to a power supply for 30V to 45V (not shown), the base is connected to the anode of the diode Dz, and the emitter is connected to one end of a resistor R2 which is a circuit constant. The cathode of the diode Dz is connected to the voltage variable IC 24. The other end of the resistor R2 is connected to the DC motor 25 and one end of a resistor R3 for detecting voltage. The other end of the resistor R3 is connected to the ground line GND via the resistor R4.

In the voltage adjusting circuit 23, the speed sensor 2
When the motor detection speed is binarized and output from the microcomputer 1 to the microcomputer 22, the microcomputer 22 arbitrarily selects the reference resistors R1i selected from the n reference resistors R11 to R1n.
The reference voltage VREF by (i = 1 to n) is a voltage variable IC
24, the base current of the transistor Q0 is adjusted based on the reference voltage VREF. As a result, the amplification of the transistor Q0 is varied, and a voltage drop occurs in the resistor R2, which is a circuit constant, so that the motor supply voltage V0 is adjusted. The motor supply voltage V0 is detected by voltage detection resistors R3 and R4.
4 is fed back to the voltage variable IC 24. The voltage variable IC 24 is controlled to stabilize the motor supply voltage V0 based on the detection voltages v3 and v4.

In this example, a current limiting circuit 26 as current adjusting means is further connected to the voltage adjusting circuit 23. The current limiting circuit 26 has an npn-type bipolar transistor (hereinafter simply referred to as a transistor) Q2 for selecting an arbitrary reference resistor R21 to R2n from the n reference resistors R21 to R2n.
1 to Q2n are connected.

Each of the transistors Q21 to Q2n has the voltage / current control signals S11 to S
1n is supplied, and the reference resistances R11 to R11 of the voltage adjustment circuit 23 are supplied.
The reference resistors R21 to 2n corresponding to R1n are selected.
One end of each of the reference resistors R21 to R2n is connected to a diode Dz.
And connected to the voltage variable IC 24. The other end of each of the reference resistors R21 to R2n is connected to each transistor Q21.
２Q2n, the emitter of which is connected to one end of a resistor R5 which is a circuit constant, and the other end of which is connected to the DC motor 25. Each transistor Q2
The bases of 1 to Q2n are connected to the microcomputer 22,
The current control signals S11 to S1n are supplied.

The other end of the resistor R5 is connected to a comparator 27 as comparing means, and compares the motor supply voltage V0 adjusted by the voltage adjustment circuit 23 with a preset reference voltage VREF. In this example, the user can freely set the motor rotation speed, and the motor rotation speed is determined by the reference voltage VREF.
The voltage comparison information by the comparator 27 is a voltage variable IC.
24, and the motor supply current Im is adjusted (restricted) based on the voltage detection information. This makes it possible to automatically set the motor supply current Im according to the change in the motor supply voltage V0.

Next, the operation of the air cleaning device 10 to which the motor control device 200 is applied will be described with reference to FIG. In this example, when a DC motor 25 whose rotation speed changes according to the supply voltage is provided instead of the AC drive motor 5, the motor supply current Im is automatically set in accordance with the change in the motor supply voltage V0. Things. In this example, the motor rotation speed is specified in advance by the operation panel 7 described above.

First, when the power switch SW1 is turned on in step C1 of the flowchart shown in FIG. 9, the DC motor 25 is driven. Thereby, the fan 4 as shown in FIG. 1 rotates to start air cleaning. Then, in step C2, the microcomputer 22 inputs setting information relating to the motor rotation speed specified by the user and performs initial setting. In this initial setting, the reference voltage VREF is
7 is set.

Thereafter, in step C3, the speed detection signal S4 obtained by binarizing the motor detection speed from the speed sensor 21.
Is output to the microcomputer 22. In step C4, the voltage adjustment circuit 23 is controlled by the microcomputer 22, and the motor supply voltage V0 is adjusted. At this time, the voltage adjustment circuit 23
Then, in response to the speed detection signal S4, the microcomputer 22 selects the optimum reference resistors R11 to R1n from the above-mentioned n reference resistors R11 to R1n, and the base current based on the reference resistors is supplied to the transistor Q0. . As a result, the motor supply voltage V0 is adjusted by varying the amplification of the transistor Q0. Since the motor supply voltage V0 is detected by the resistors R3 and R4, the detection voltage v
3 and v4, the motor supply voltage V0 is stabilized based on the detected voltages v3 and v4.

Further, since the motor supply voltage V0 is also output to the comparator 27, the process proceeds to step C5 where the motor supply voltage V0 is compared with the reference voltage VREF to detect an error. If an error is detected between the motor supply voltage V0 and the reference voltage VREF, the process proceeds to step C6. In step C6, the microcomputer 22 having received the potential difference detection signal S5 output from the comparator 27 corrects the voltage / current control signals S11 to S1n based on the potential difference detection signal S5. If no error is detected between the two, the process proceeds to step C7,
Until the power switch SW1 is turned off, the process returns to step C3 and the above-described flow is repeated.

Therefore, for example, when a foreign object is inserted into the motor load such as the fan 4 shown in FIG. 1 from the discharge port 6 and the fan 4 becomes heavy, and the rotational speed of the DC motor 25 for driving the fan 4 is significantly reduced. In such a case, the motor supply voltage V0 is reduced and the motor supply current Im is reduced.
Can be limited. For this reason, an overcurrent can be prevented from flowing through the voltage adjustment circuit 23, so that burning of the voltage adjustment circuit 23, the DC motor 25, and the like can be prevented. Thus, it is possible to provide a highly reliable air cleaning device 10 having a built-in DC motor 25 whose rotation speed can be freely set according to the supply voltage.

Next, another example of control by the microcomputer 22 will be described with reference to FIG. In this example, an upper limit value and a lower limit value are set for a preset motor rotation speed, and the motor supply voltage V by the voltage adjustment circuit 23 is set within the range of the upper limit value and the lower limit value of the motor rotation speed.
0 and the motor supply current I by the current limiting circuit 26.
m is adjusted. Further, it is determined whether or not the motor supply current Im can be limited according to the motor supply voltage V0. If the motor supply current Im cannot be limited, an alarm is generated.

First, when the power switch SW1 is turned on in step D1 of the flowchart shown in FIG. 10, the DC motor 25 is driven, and air cleaning is started. Then, in step D2, when the user designates the motor rotation speed to the microcomputer 22, the microcomputer 22 thereafter performs initial settings such as an upper limit value and a lower limit value of the designated motor rotation speed in step D3. In this initial setting, the motor rotation speed, for example, “strong” is displayed on the liquid crystal display 16.

When the speed detection signal S4 is output from the speed sensor 21 to the microcomputer 22 in step D4, in step D5, the voltage adjustment circuit 23 is set within the range of the preset upper and lower limits of the motor rotation speed. Is microcomputer 2
2 to adjust the motor supply voltage V0. Further, the motor supply voltage V0 is
The current is also adjusted in accordance with the voltage adjustment. In the voltage adjustment circuit 23, the motor supply voltage V0 is varied, and the current supply circuit Im adjusts the motor supply current Im accordingly. This motor supply voltage V
0 is compared with the reference voltage VREF by the comparator 27. Since the potential difference detection signal S5 from the comparator 27 is output to the microcomputer 22, the potential difference detection signal S5
, The voltage / current control signals S11 to S1n are corrected.

Thereafter, the process proceeds to step D6, where the microcomputer 22 determines whether the motor supply current Im by the current limiting circuit 26 can be limited according to the motor supply voltage V0 by the voltage adjustment circuit 23. This motor supply voltage V0
If it is determined that the motor supply current Im can be limited in accordance with
Until 1 is turned off, the process returns to step D4 and the above flow is repeated. When the power switch SW1 is turned off, the motor speed control ends normally.

Then, in step D6, the motor supply voltage V
If it is determined that the motor supply current Im cannot be limited in accordance with 0, the microcomputer 22 urgently stops the DC motor 25 and generates an alarm in step D8. This alarm message is displayed on the liquid crystal display 16, and the motor speed control is abnormally terminated by this message.

As described above, in the present embodiment, the upper limit value and the lower limit value are set for the preset motor rotation speed, and the voltage adjustment circuit 23 is set within the range of the upper limit value and the lower limit value of the motor rotation speed. , The motor supply current Im by the current limiting circuit 26 can be adjusted.

Therefore, even when the DC motor 25 is used instead of the AC driving motor 5, the air cleaning device 10 can be operated within the range of the upper and lower limits of the motor rotation speed. If the upper limit value and the lower limit value are exceeded, the DC motor 25 is stopped immediately and an alarm is generated.
Can be protected.

Next, another example of the configuration of the motor control device will be described with reference to FIG. In this example, a field-effect transistor having a small on-resistance is provided in place of the transistor Q0 described above, and the motor supply current Im is controlled in a conduction period.

The motor control device 200 'shown in FIG. 11 can be very suitably applied when the DC motor 25 is used in the above-described air cleaning device 10. A speed sensor (TG: tacho generator) 21 is attached to the DC motor 25, and the rotation speed of the DC motor 25 is detected. The motor detection speed by the speed sensor 21 is binarized and output to a microcomputer 28. The microcomputer 28 generates a pulse width control signal S7 corresponding to the motor detection speed. A signal generator 29 is connected to the output stage of the microcomputer 28, and the pulse width control signal S
7, the duty ratio of the gate voltage VG is variably adjusted based on the pulse width control signal S7.

Here, the duty ratio is defined as 1 of the pulse signal.
Regarding the cycle, it refers to the ratio between the high-level period and the low-level period. Hereinafter, a high level period with respect to one cycle of the pulse signal, expressed as a percentage, will be described as a duty percentage.

The signal generator 29 receives, for example, a DC voltage VCC (= 5 VDC) from the power supply unit shown in FIG. 2 and the like, and operates a delay circuit or buffer (not shown) which receives a clock signal CLK from the microcomputer 28 and operates. It is composed of a circuit and the like. The output stage of the signal generator 29 has, for example, an n-channel type field effect transistor (merely FE).
19) is connected.

The drain of the FET 19 has a + terminal
The source is connected to the ground terminal GND, and the gate is connected to the output of the signal generator 29. The negative terminal of the DC motor 25 is connected to the power supply for C35V. This D
A voltage detection circuit 20 is connected to the + terminal of the C motor 25, and detects a supply voltage V0 between terminals of the DC motor 25 (hereinafter, also referred to as a motor supply voltage) V6.
Is output to the microcomputer 28 (see FIG. 8 for the internal configuration).

Next, the operation of the motor control device 200 'will be described with reference to FIGS. 12A to 12E. In this example, by controlling the motor supply current Im during the conduction period, the DC
The driving energy required by the motor 25 is controlled. First, the DC voltage VCC is supplied to the microcomputer 28 and the signal generator 29 from the power supply unit 13 and the like.
= DC5V is supplied, and the + terminal of the DC motor 25 is
A DC voltage of about 35 V DC = VM shown in FIG. 2A is applied, and the clock signal C shown in FIG.
It is assumed that LK is supplied.

In this state, the microcomputer 28 outputs to the signal generator 29 a pulse width control signal S7 based on a preset motor rotation speed. The signal generator 29 generates a gate voltage VG having a predetermined duty ratio based on the pulse width control signal S7. For example, a gate voltage VG having a duty ratio of 4: 1 (duty 80%) shown in FIG. 12C is generated.

When the gate voltage VG having the duty of 80% is output to the FET 19, the FET 19 is turned on only during this high level period, so that the motor supply voltage Vm having the duty of 80% shown in FIG. Is done. The motor supply current Im shown in FIG. 12E flows by the motor supply voltage Vm, and the DC motor 25 rotates.

The rotational speed of the DC motor 25 is detected by the speed sensor 21, and the detected motor speed is binarized and output to the microcomputer 28. The microcomputer 28 compares the preset motor rotation speed with the motor detection speed. Based on the comparison result, for example, a pulse width control signal S7 corrected so as to increase the pulse width is output from the microcomputer 28 to the signal generator 29.

The signal generator 29 corrects the duty ratio of the gate voltage VG based on the pulse width control signal S7. When the corrected gate voltage VG is output to the FET 19, the gate voltage VG having the corrected duty ratio is output.
, The motor supply voltage Vm having the corrected duty ratio is applied to the DC motor 25. The motor supply current Im flows by the motor supply voltage Vm, and the rotation speed of the DC motor 25 changes.

As described above, the drive energy required by the DC motor 25 can also be controlled by controlling the current supply period of the motor supply current Im. This device 10
Power consumption can be reduced.

(3) Air Purification Applied with Power Control Apparatus FIG. 13 is a block diagram showing a configuration example of a power control apparatus 300 according to the present embodiment. The power control device 300 can be applied to a case where an AC motor driven by a commercial power supply is used for the air cleaning device 10 described above. Power control device 300
Controls the power consumption of the AC motor 35 shown in FIG. 13 according to the power supply voltage. This type of AC motor 35 is assumed to be a so-called induction motor driven by AC 100 V, such as a shade type or a capacitor type. Of course, the electric device to be controlled is not limited to the induction motor, and may be a heating resistor or the like.

In general, the commercial power supply voltage is stably supplied by switching the tap of the pole transformer so as to be 105 ± 10 V at the receiving end of the consumer according to the Electricity Business Law. In this example, when the power supply voltage is equal to or lower than the minimum supply voltage of the AC motor 35, the power supply voltage is supplied as it is and A
The C motor 35 is operated continuously, and the power supply voltage is
When the supply voltage exceeds the minimum supply voltage of 5, the AC motor 35 is intermittently operated by intermittently supplying the power supply voltage to intentionally create an operation environment at the time of the minimum supply voltage drive.

A power switch SW1 is connected to the AC plug 9 described in FIG. 1, and a thyristor 31 and a control unit 32 are connected to the power switch SW1. The anode of the thyristor 31 is connected to an AC power input, and the cathode is connected to the above-described AC motor 35 for driving the fan. The gate is connected to a signal generator 37 to be described later, and is turned on / off based on a gate voltage VG. A thyristor 31 having a low on-resistance is used. This is because a large on-resistance leads to an increase in fixed loss. Instead of the thyristor 31, a field effect transistor having a low on-resistance can be used.

The control unit 32 is provided with an AC-DC converter 33, which converts 100V AC to a DC voltage VCC for control of, for example, 5V DC. The AC-DC converter 33 is provided with a transformer (not shown).
ac is reduced to a low voltage of about 5 VAC. A smoothing circuit is connected to the output stage of this transformer through a full-wave rectifier circuit,
DC5V after converting AC5V to DC (DC voltage VC
C) is smoothed. An analog / digital conversion circuit (hereinafter, referred to as an A / D conversion circuit) 34 as a voltage detection means is connected to the output stage of the AC-DC converter 33, and the output of the smoothing circuit is converted from analog to digital.
AC power supply voltage Vac supplied to power control device 300
Has been made to detect.

The DC voltage VCC from the AC-DC converter 33 is supplied to a micro computer (hereinafter referred to as a microcomputer) 36 as a control means, a signal generator 37 and an LE.
D18. An operation panel 7 as setting means is connected to the input stage of the microcomputer 36, and the AC motor 3
The minimum supply voltage allowed for normal operation of the power supply 5 is set by the input keys 17A and 17B described above. In this example, the minimum supply voltage of the AC motor 35 is set to 90V.

The microcomputer 36 generates pulse width control signals S9 to S11 corresponding to the minimum supply voltage setting information from the operation panel 7 and the voltage detection signal S8 binarized by the A / D conversion circuit 34. .

The pulse width control signal S9 is activated when voltage detection information exceeding the minimum supply voltage 90V of the AC motor 35 is detected. When the power supply voltage Vac exceeds 110V, the pulse width control signal S9 drives the AC motor 35 by 90V. This is a signal for suppressing power consumption at the time. Similarly, the pulse width control signal S10 is activated when a power supply voltage Vac exceeding 100 V and equal to or less than 110 V is detected, and is a signal for suppressing the power consumption of the AC motor 35 to the same level as when driving at 90 V. Similarly, the pulse width control signal S11 is activated when a power supply voltage Vac of more than 90V and less than 100V is detected, and is a signal for suppressing the power consumption of the AC motor 35 to the same level as when driving at 90V.

The output stage of the microcomputer 36 has a signal generator 37
Are connected, and the duty ratio of the gate voltage VG is variably adjusted based on the pulse width control signals S9 to S11.
In this example, when the pulse width control signal S9 is activated,
For example, a gate voltage VG of 85% duty is generated. When the pulse width control signal S10 is activated, a 90% duty gate voltage VG is generated. When the pulse width control signal S11 is activated, a 95% duty gate voltage VG is generated. Pulse width control signals S9 to S
11 is inactive, a continuously high level gate voltage V
G is generated.

The output of the signal generator 37 is the thyristor 3
The thyristor 31 is connected to the first gate and the thyristor 31 is turned on / off based on the gate voltage VG. The power consumption of the AC motor 35 is controlled by this on / off control.

Next, referring to FIGS. 14 and 15,
The operation of the air cleaning device 10 to which the power control device 300 is applied will be described. In this example, the power supply voltage Vac is detected during a sampling period from when the power switch SW1 is turned on until a certain time elapses, and during the sampling period,
When the voltage detection information exceeding the minimum supply voltage 90 V of the AC motor 35 is detected, the AC motor 35 is operated intermittently after the elapse of the sampling period.

First, the above-mentioned AC plug 9 is connected to A (not shown).
The power supply switch SW1 is turned on in step E1 of the flowchart shown in FIG. As a result, the power supply voltage Vac shown in FIG. 15A is applied between the two terminals of the AC motor 35, and the fan 4 shown in FIG. 1 rotates to start air cleaning. At this time, since the entire power supply voltage Vac is applied to the AC motor 35,
The AC motor 35 is operated continuously.

At step E2, the microcomputer 36
The setting information relating to the minimum supply voltage 90 V permitted as the normal operation of the C motor 35 is read from a ROM or the like to perform the initial setting. In this example, the minimum supply voltage of the AC motor 35 is 90V. This minimum supply voltage may be set in advance by the manufacturer or may be set by the user.

Thereafter, in step E3, the microcomputer 36 detects the power supply voltage Vac within a preset sampling period shown in FIG. 15B. The sampling period is set by the manufacturer, for example, to “5 seconds” from when the power is turned on. The reason why the sampling period is provided is to check the operation state of the AC motor 35 based on the power supply voltage Vac when the power is turned on.

Next, in step E4, it is first determined whether the power supply voltage Vac exceeds 110 V based on the voltage detection signal S8. When the power supply voltage Vac exceeds 110V,
The microcomputer 36 shifts to step E5 where the minimum supply voltage 9
The pulse width control signal S9 for driving the AC motor 35 at 0V is activated and output to the signal generator 37.

In the signal generator 37, based on the pulse width control signal S9, for example, the gate voltage V shown in FIG.
The duty ratio of G is adjusted to 85%. The output of the signal generator 37 is input to the gate of the thyristor 31, and the thyristor 31 is turned on / off based on the gate voltage VG. As a result of this on / off control, the power supply voltage V
ac is intermittently supplied as shown in FIG.
Since the terminal voltage Vm of the No. 5 is energized during the energization period control (intermittent operation), the power consumption of the AC motor 35 can be limited so as to be equivalent to the power consumption at the time of 90 V driving.

If it is determined in step E4 that the AC power supply voltage Vac is equal to or lower than 110 V, the process proceeds to step E4.
6 and the microcomputer 36 determines that the power supply voltage Vac is 100 V
Over 110V. Power supply voltage Vac
Is determined to be greater than 100 V and less than 110 V, the microcomputer 36 activates the pulse width control signal S10 and outputs it to the signal generator 37 in step E5.

In the signal generator 37, for example, the duty ratio of the gate voltage VG shown in FIG. 15E is adjusted to 90% based on the pulse width control signal S10. Gate control is performed to turn on / off the thyristor 31 based on the gate voltage VG of the signal generator 37. Since the terminal voltage Vm of the AC motor 35 is controlled by the gate control as shown in FIG. 15F, the power consumption can be limited so as to be equivalent to the power consumption when the AC motor 35 is driven at 90 V. .

Further, if it is determined in step E6 that the AC power supply voltage Vac is equal to or lower than 100 V, step E
In step 7, the microcomputer 36 determines whether the power supply voltage Vab is higher than 90 V and lower than 100 V. When it is determined that the power supply voltage Vac is more than 90 V and less than 100 V, the process proceeds to step E5, where the microcomputer 36 activates the pulse width control signal S11 and outputs it to the signal generator 37.

In the signal generator 37, for example, the duty ratio of the gate voltage VG shown in FIG. 15G is adjusted to 95% based on the pulse width control signal S11. On / off control of the thyristor 31 is performed based on the gate voltage VG of the signal generator 37. By this on / off control, A
Since the terminal voltage Vm of the C motor 35 is controlled during the energization period as shown in FIG. 15H, the power consumption of the AC motor 35 can be limited so as to be equivalent to the power consumption when the AC motor 35 is driven at 90 V.

If it is determined in step E7 that the AC power supply voltage Vac is 90 V or less, the process proceeds to step E8.
The microcomputer 36 determines that the pulse width control signals S9 to S1
1 is inactivated, for example, and output to the signal generator 37.

The signal generator 37 generates a continuous high-level gate voltage VG, and the thyristor 31 is gate-controlled based on the gate voltage VG. The power supply voltage Vac is applied to the AC motor 35 by the gate control. The AC motor 35 can be continuously operated according to the voltage Vac, and the power corresponding to the voltage Vac is consumed. Thereafter, the flow returns to step E3 and the above-described flow is repeated until the power switch SW1 is turned off in step E9.

As described above, according to the air cleaning device 10 to which the voltage control device 300 according to the present embodiment is applied, when the power supply voltage Vac is equal to or lower than the minimum supply voltage 90 V of the AC motor 35, the power supply voltage Vac is used as it is. When the power supply voltage Vac exceeds the minimum supply voltage 90 V, the power supply voltage Vac is intermittently supplied to operate the AC motor 35 intermittently.

With this configuration, even if the power supply voltage Vac fluctuates within a range exceeding the minimum supply voltage 90 V of the AC motor 35, the power consumed by the AC motor 35 can be kept constant. Thereby, the thyristor 31
Even if the fixed loss in the control unit 32 is taken into consideration, the annual power consumption of the air purifying device 10 that is operated all day can be reduced, so that the low power consumption type air purifying device 1 can be reduced.
0 can be provided.

In this embodiment, the power supply voltage Vac is 9
Although the case where the thyristor 31 is turned on by the continuous high-level gate voltage VG in step E8 when 0V or less is detected has been described, the power supply voltage Vac =
After detecting 90V or less, the cathode of the thyristor 31
The anodes may be electrically short-circuited. The fixed loss caused by the thyristor 31 can be reduced.

In this embodiment, the case where the electric motor to be controlled is the AC motor 35 has been described. However, the present invention is not limited to this. If the minimum supply voltage allowed for normal operation of the electric equipment can be set, The power control device 300 can also be applied to control the power consumption of a resistance heating element such as an electric stove.

[0093]

As described above, according to the control device for the all-day operation equipment according to the present invention, when there is illumination light or sunlight near the place where the electric equipment is installed, the electric equipment is connected continuously. When the vehicle is driven and there is no illumination light or sunlight near the installation location, the electric device is controlled to operate intermittently.

[0094] With this configuration, with respect to the electric devices and the like installed in the bedroom and the like, the lighting of the bedroom is turned off when the lighting of the bedroom is turned off.
Thereafter, the electric device and the like can be operated intermittently until the inside of the bedroom becomes bright, so that the nighttime power consumption of the electric device can be reduced and noise from the electric device can be intermittently eliminated. Therefore, the control device of the all-day operation device according to the present invention can be sufficiently applied to an air purifying device or the like that is required to be operated all day long throughout the day and night.

According to the air purifying apparatus of the present invention, since the above-described controller for the all-day operation equipment is applied, the air purifying means can be operated intermittently at night or the like. Therefore, it is possible to reduce the power consumption of the motor at night, such as when sleeping, and to intermittently eliminate noise from the air cleaning means.

The present invention is very suitable when applied to electric equipment such as an air purifying motor which is required to operate all day and night.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration example of an air purifying apparatus 10 as each embodiment according to the present invention.

FIG. 2 is a control device 1 of an all-day operation device as an embodiment.
It is a block diagram which shows the example of a structure of 00.

FIG. 3 is a time chart illustrating an operation control example (part 1).

FIG. 4 is a flowchart illustrating a control example (part 1) by the microcomputer 14.

FIG. 5 is a flowchart illustrating a control example (part 2) by the microcomputer 14.

FIG. 6 is a time chart showing an operation control example (part 2).

FIG. 7 is a time chart illustrating an example of intermittent operation.

FIG. 8 is a circuit diagram showing a configuration example of a motor control device 100 as an embodiment.

FIG. 9 is a flowchart illustrating a control example (part 1) by the microcomputer 22;

FIG. 10 is a flowchart illustrating a control example (part 2) by the microcomputer 22;

FIG. 11 is a block diagram illustrating a configuration example of another motor control device 200 ′.

FIG. 12 is a time chart showing a control example of an energization period of a motor control device 200 ′.

FIG. 13 is a block diagram illustrating a configuration example of a power control device 300 as an embodiment.

FIG. 14 is a flowchart illustrating an example of control by the microcomputer 36;

FIG. 15 is a time chart illustrating an example of control of an energization period by the power supply control device 300.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabinet 2 Inlet 3 Filter 4 Fan 5 Motor 10 Air purifier 11 Optical sensor 12, 32 Control unit (Control means) 14, 22, 36 Microcomputer (microcomputer) 19 FET 21 Speed sensor 23 Voltage adjustment circuit (Voltage adjustment means) ) 25 DC motor 26 Current limiting circuit (current adjusting means) 27 Comparator (comparing means) 31 Thyristor 34 A / D conversion circuit (voltage detecting means) 35 AC motor

Claims (6)

[Claims] 1. A device for controlling an electric device which is operated all day and night, comprising: a detecting unit for detecting illumination light or sunlight near a place where the electric device is installed; and light detection information by the detecting unit. Control means for controlling the operation of the electric device based on the control device, wherein the control device continuously operates the electric device when there is illumination light or sunlight near a place where the electric device is installed; When there is no illumination light or sunlight near the installation location of the electric device, the control device controls the electric device to operate intermittently all day long. 2. The method according to claim 1, wherein the control unit controls the electric device, wherein the control unit performs the first predetermined time from when illumination light or sunlight near the installation location of the electric device is no longer detected. 2. The electric device is operated continuously, and the electric device is operated intermittently after the first predetermined time has elapsed.
The control device for the all-day operation equipment described in the above. 3. The method according to claim 2, wherein the control unit is provided for controlling the electric device, wherein the control unit performs the second predetermined time period from a point in time when the illumination light or the sunlight near the installation location of the electric device is detected. The electric device is operated intermittently, and the electric device is continuously operated after the second predetermined time has passed.
The control device for the all-day operation equipment described in the above. 4. At least an air purifier for purifying air, a detector for detecting illumination light or sunlight near a place where the air purifier is installed, and light detection information by the detector. Control means for controlling the operation of the air purifying means, wherein the control means continuously operates the air purifying means when there is illumination light or sunlight near the place where the present apparatus is installed; An air purifying device that controls the air purifying means to operate intermittently when there is no illuminating light or sunlight near the installation location. 5. The method according to claim 1, wherein a control unit for the air cleaning unit is provided, wherein the control unit is configured to perform a first predetermined time from when illumination light or sunlight near the installation location of the apparatus is no longer detected. The air purifying apparatus according to claim 4, wherein the air purifying means is continuously operated, and the air purifying means is operated intermittently after the first predetermined time has elapsed. 6. A case in which a control unit of the air cleaning unit is provided, wherein the control unit is configured to perform the second predetermined time from a point in time when illumination light or sunlight near the installation location of the apparatus is detected. 5. The air purifying apparatus according to claim 4, wherein the air purifying unit is operated intermittently, and the air purifying unit is continuously operated after the second predetermined time has elapsed.