JPH07110317B2 - Operation control method for stirring type washing machine - Google Patents

Description

The present invention relates to an operation control method for a stirring type washing machine having an agitator.

[Conventional technology]

FIGS. 3 and 4 show an example of a stirring type fully automatic washing machine having an agitator. In the figure, (1) is a hollow cylinder having a large number of through holes (2) and its peripheral surface is the center. An agitator as a rotary blade as a rotary blade in which a longitudinally long stirring blade (3) is radially provided, and (4) is a washing tub having a through hole (5) in a side wall in which the agitator (1) is centrally arranged. A water receiving tank (7) having a waterproof plate (16) provided at an upper end opening outside the dehydrating tank (4) is also used as the water receiving tank (7).
Drain hose (2 with drain valve (18) installed at the drain port at the bottom of the
Connect 1) via the valve case (17).

In the figure, (8) is a motor, which is connected to the rotation transmission part (12) via a low speed transmission mechanism of a pulley (9), a V belt (10) and a pulley (11). This rotation transmission part (12)
Has a double drive shaft (12a) (12b) that is switched by a spring clutch mechanism (13). The outer drive shaft (12a) is the dehydration tank (4) and the inner drive shaft (12b) is the agitator. (1)
To each.

On the anti-load side of the motor (8), a coil (14a) and a magnet (not shown) are provided as means for detecting the rotation of the dehydration tank (4).
Install the speed generator (14) (pulse generator: PG) consisting of and.

On the other hand, a bellows (20c) having an iron core (20b) and a coil (20d) facing the bellows (20c) are provided in the case (20a) at the end of the pressure guiding hose (19) rising from the valve case (17). Further, a water level detecting means (20) in which an oscillator (20e) is connected to the coil (20d) is provided.

Although not shown, these mechanisms are housed in an outer box via a vibration isolator, and a control device (15), a water supply valve (22), an operation switch section (which will be described later) are provided on an upper part of the outer box. 26), the piezoelectric buzzer (29), etc. are arranged.

In the figure, (15) is a control device by a microcomputer,
As shown in Fig. 4, this is connected to a power supply (25), and an indicator (24), a piezoelectric buzzer (29), and an amplifier (23) in which a plurality of lamps such as light emitting diodes are arranged in parallel at the output terminal as indicator lamps. Through the motor (8), drain valve (18),
The water supply valve (22) is connected.

On the other hand, the input side terminal of the control device (15) has an operation switch section (26), a lid unbalance and other sensor sections (27).
Besides, the water level detection means (20) is connected via the frequency divider (28), and the resistance (30a), diode (30b), capacitor (30c), transistor (30d), resistance (30e).
Through the waveform converter (30) by the speed generator (14)
Are connected.

Further, as shown in FIG. 3, the spring clutch mechanism (13) is switched by the drain valve (18) although it is not electrically connected.

Next, the operation will be described. First, the laundry and a certain amount of detergent are put into the dehydration tub (4), and the operation start switch is turned on.

When the water supply valve (22) is opened and water is introduced into the water receiving tank (7) and the dehydration tank (4), the water level detecting means connected from the valve case (17) through the pressure hose (19). In (20), the bellows (20c) is used to detect the pressure change due to the water level.
The “L” of the coil (20d) arranged around the iron core (20b)
It is detected as a change in "value" and output to an oscillator (20e) having an LC oscillating circuit, which is captured by a control device (15) having a microcomputer via a frequency divider (28) to perform calculation.

In this way, when the water level reaches the specified low water level, the water supply is stopped and the control device (15) uses the motor (8).
A motor control process is started in which the motor is energized to perform the forward / reverse operation. The forward / reverse operation of the motor (8) is performed by the pulley (9), the V-belt (10), the pulley (11), the rotation transmission unit ( It is transmitted to the stirring blade (3) via 12), the stirring blade (3) swings to stir the laundry, and washing is performed.

When the motor (8) rotates, the speed generator (14) also rotates, and the voltage generated by the speed generator, which is a sinusoidal waveform output from the coil (14a), is applied to the resistor (30a) and the diode (30).
It is converted into a waveform shaping voltage which is a 5V rectangular wave through a waveform converter (30) including b), a capacitor (30c), a transistor (30d) and a resistor (30e), and is introduced into a control device (15).

FIG. 5 shows the relationship between the movement of the motor (8) and the pulse generated by the speed generator (14). As is well known, in the energizing circuit of the motor (8), the normal rotation (right rotation) and the reverse rotation (right rotation) are performed. There is an energization stoppage time during the left rotation), and the energization time is 80 pulses for the speed generator (14).

Fig. 6 shows the motor control process. As mentioned above, when the speed generator (PG) (14) reaches 80 pulses, the controller (1
5) turns off the power to the motor (8).

Even after turning off the power to the motor (8), the dehydration layer (4) and the motor (8) continue to rotate by inertia, and as a result,
The speed generator (14) also emits pulses due to this inertia.

The control device (15) starts counting the pulses due to this inertia on condition that the power supply to the motor (8) is turned off, but the inertial force eventually disappears and the inertial pulse does not appear.

If there is no inertia pulse for 200 msec or more, it is assumed that the motor (8) and the stirring blade (3) are stopped, and the pulse counting is stopped, and the motor (8) is rotated in the direction opposite to the previous one.

[Problems to be Solved by the Invention]

In the conventional stirring-type washing machine, the forward rotation and the reverse rotation speed of the motor (8), that is, the rotation angle of the agitator (1) is always uniform after the motor (8) is energized. For example, when the reduction ratio between the motor (8) and the agitator (1) is 10: 1, one rotation of the motor (8) causes the agitator (1) to move 36 degrees, so the normal rotation of the motor (8)
If the number of reversals is 7 rotations, the agitator (1) swings at an angle of 252 degrees.

On the other hand, especially when there is a large amount of laundry or when washing hard and thick clothes such as jeans, if you start washing with a low amount of water per unit time at the low water level as described above Often takes a long time, and some of the cleaning properties are often poor.

An object of the present invention is to eliminate the disadvantages of the conventional example, and at the time of stirring the laundry at the initial stage of washing, the laundry can be automatically and quickly immersed in washing water, and as a result, the washing efficiency can be improved. It is to provide a driving control method of.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention, when the water supply reaches a certain water level before the specified water level, energizes the motor to start the swing operation of the agitator, and the rotation speed of the normal rotation and the reverse rotation of the motor is required. The gist is to make the rotation angle of the agitator different from each other so that one of the left and right sides becomes a large unbalance and swing, and then perform the swinging operation to make the rotation angle of the agitator uniform left and right.

[Action]

According to the present invention, when the water supply reaches a certain water level before the specified water level, the motor is energized to start the rocking operation of the agitator, and the required time, for example, until the water supply reaches the specified medium water level or high water level. , The forward and reverse rotation speeds of the motor are made different to swing the agitator in a large unbalanced one of the rotation angles of the left and right, so that the laundry slowly rotates in the direction in which the rotation angle is large, In the meantime, the water penetrates the laundry well.

In particular, when the laundry rotates more than one rotation, it always passes directly under the water supply port and is covered with water from above, so that the water permeability is good.

After the required time has elapsed, the laundry is agitated and washed by a swinging operation that equalizes the rotation angle of the agitator to the left and right.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2 are flowcharts showing an embodiment of the operation control method of the stirring type washing machine of the present invention, and FIG. 2 corresponds to FIG. 6 showing the conventional example.

The washing machine to be used is a stirring type fully automatic washing machine having an agitator shown in FIG. 3 and FIG.

As shown in FIG. 2, as the washing step, first, the laundry and a certain amount of detergent are put into the dehydration tub (4), and the operation start switch is turned on.

When the water supply valve (22) is opened to start water supply [step (a)] and water is introduced into the water receiving tank (7) and the dehydration tank (4), the water level detecting means (20) regulates the water level. Low water level,
When the water level reaches one level lower than the set water level [step (a)], the water supply is stopped, and the control device (15) energizes the motor (8) to perform the forward and reverse operation. Is started, the forward and reverse operation of this motor (8) is the pulley (9), V belt (10), pulley (11),
The rotation is transmitted to the agitator (1) via the rotation transmission unit (12), the stirring blades (3) swing to stir the laundry, and the laundry is washed.

FIG. 1 shows a motor control process. When the motor (8) is energized and water is being supplied [step (g) (h)],
The speed generator (14) also rotates together with the motor (8), and the output thereof is introduced into the control device (15) as a rectangular wave pulse.

When the motor (8) is rotating in the normal direction, that is, when the motor is rotating to the right and the number of pulses in the speed generator (PG) (14) reaches 80, the controller (15) turns off the power supply to the motor (8). [Step (ke) (ko) (shi)].

On the other hand, when the motor (8) is reversing, that is, rotating counterclockwise, when the number of pulses in the speed generator (PG) (14) becomes 64, the control device (15) turns off the power supply to the motor (8). [Step (ke) (sa) (shi)].

Even after turning off the power to the motor (8), the dehydration tank (4) and the motor (8) continue to rotate by inertia, and as a result,
The speed generator (14) also emits pulses due to this inertia.

The control device (15) starts counting the pulses due to this inertia on condition that the power supply to the motor (8) is turned off, but the inertial force eventually disappears and the inertial pulse does not appear.

If there is no inertial pulse for 200 msec or more [Step (S)],
Assuming that the motor (8) and the stirring blade (3) are also stopped, the pulse counting is stopped, and the motor (8) is rotated in the opposite direction to the previous one [step (so) (ta] (chi)].

By changing the forward and reverse energization times of the motor (8) and thus the number of rotations, the rotation angle of the agitator (1) becomes larger when the motor is rotated to the right, and the unbalance is swayed. It will be dynamic.

The laundry slowly rotates in the right direction where the rotation angle of the agitator (1) is large, and during that time, water sufficiently penetrates into the laundry.

In particular, when the laundry rotates more than one rotation, it always passes directly under the water supply port and is covered with water from above, so that water permeability is good.

As shown in FIG. 1, such unbalanced operation of the agitator (1) is performed until the set water level is reached [step (d)], and the operation after the end of water supply is the same as that of the motor (8) as shown in FIG. Speed generator (PG) (1)
When the number of pulses in 4) becomes 80 pulses, the control device (15) turns off the power supply to the motor (8) to perform a normal rocking operation in which the rotation angle of the agitator (1) is equalized left and right. .

When the set time for washing is completed [step (f)], the washing process is completed.

〔The invention's effect〕

As described above, the operation control method of the agitation type washing machine of the present invention automatically changes the laundry to the washing water at the time of agitating the laundry at the initial stage of washing, even when the laundry has a lot of laundry or is thick and hard. It can be soaked quickly, and as a result, cleaning efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a flowchart of a main part showing an embodiment of an operation control method for a stirring-type washing machine according to the present invention, FIG. 2 is a flowchart of the same as above, and FIG. 3 is a vertical side view of a stirring-type fully automatic washing machine. FIG. 4 is a block circuit diagram of the control system of the same as above, FIG. 5 is a pulse waveform diagram of a speed generator in rotation of a motor, and FIG. 6 is a flowchart showing a conventional example. (1) …… Agitator, (2) …… Perforated hole (3) …… Stirring blade, (4) …… Dehydration tank (5) …… Perforated hole, (6) …… Balancer (7) …… Water receiver Koki, (8) …… Motor (9) …… Pulley, (10) …… V-belt (11) …… Pulley, (12) …… Rotation transmission part (12a) (12b) …… Drive shaft (13) ...... Spring clutch mechanism (14) …… Speed generator, (14a) …… Coil (15) …… Control device (16) …… Waterproof plate, (17) …… Valve case (18) …… Drain valve, (19) …… Pressure hose (20) …… Water level detection means, (20a) …… Case (20b) …… Iron core, (20c) …… Bellows (20d) …… Coil, (20e) …… Oscillator ( 21) …… Drain hose, (22) …… Water supply valve (23) …… Amplifier, (24) …… Indicator (25) …… Power supply (26) …… Operation switch section (27) …… Lid / un Balance and other sensors 28) …… divider, (29) …… buzzer (30) …… waveform converter (30a), (30e) …… resistor (30b) …… diode, (30c) …… capacitor (30d) …… Transistor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hirofumi Urabe, 1-1 1-1 Yamate, Funabashi, Chiba Pref., Funabashi Mfg. Co., Ltd. (72) Hideyo Uchida 1-1-1, Yamate, Funabashi, Chiba No. 1 in the Funabashi Works, Nippon Steel Co., Ltd. (72) Tetsuo Ishii, 1-1 1-1 Yamate, Funabashi City, Chiba Prefecture, Japan. No. 1 in the Funabashi Works of Nipponken Iron Co., Ltd. (72) Norihiko Ishikawa 1-1-1, Yamate, Funabashi City, Chiba, Japan (56) Funabashi Works of the Kenken Iron Co., Ltd. , A) JP-A-60-5192 (JP, A)

Claims (1)

[Claims] 1. When the water supply reaches a certain water level before the regulation water level, the motor is energized to start the swinging operation of the agitator, and the agitator is rotated by changing the rotation speed for forward rotation and reverse rotation for a required time. The method for controlling the operation of the agitating washing machine is characterized in that one of the left and right sides of the agitator is swung so as to have a large unbalance, and then the agitator is swung so as to make the rotation angles of the left and right sides uniform.