JPH03184599A - Method for controlling operation of washing machine - Google Patents

Abstract

PURPOSE:To contrive clothing to be sufficiently untied to be rinsed at the time of rinsing by detecting the load quantity of the closing at the time of a washing process, and by performing rinsing operation in consideration of a time as the load quantity of the same value is detected at the time of a rinsing process. CONSTITUTION:In a rinsing process, a motor 8 is electrified, and an agitator 1 and a dehydrating tank 4 are rotated at a high speed continuously in the one direction, and dehydration is performed. After washing water included in clothing is removed from, a feed water valve 32 is opened again, and water is fed into the dehydrating tank 4 and a water receiving tank 7. The motor 8 is electrified, and the agitator 1 is rotated forward or reversely, and by agitation working, rinsing is performed. Also during the rinsing by the agitation, in the same manner as at the time of a washing process, inertia pulses are counted, and the while, when the number of inertia pulses outputted from a speed generator 14 is made equal to a value stored one minute before the completion of the washing process, then to the same degree as at the time of the washing process, the clothing is set in an untied state, and after that, the rinsing by the agitation for one minute additionally is performed, and first rinsing is completed. In the same manner, second rinsing is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention particularly relates to a method for controlling the operation of a rinsing process in a washing machine that can be automatically operated by an electronic control circuit such as a microcomputer.

[Conventional technology]

An example of such a washing machine is the one shown in Figs. 6 and 7, which is a fully automatic one-tank stirring type, and in the figure (1) is a hollow cylindrical body with a through hole (2). The agitator (4) is a rotary blade with vertically elongated stirring blades (3) radially provided on its circumferential surface in the center, and the agitator (4) has this agitator (1) in the center and has a through hole (5) in the side wall. A balancer (6) is formed in the upper opening of the dehydration tank.

(7) is a water tank provided outside the dewatering tank (4), and a drain hose (21) equipped with a drain valve (34) is connected to the drain port at the bottom of the water tank (7) via a valve case. .

In the figure, (8) is a motor, which is connected to a rotation transmission section (12) via a deceleration transmission mechanism of a pulley (9) (10) and a pulley (11). This rotation transmitting section (12) is switched between two rotations by a spring clutch mechanism.
The outer drive shaft (12a) is connected to the dehydration tank (4), and the inner drive shaft (12b) is connected to the dehydration tank (4).
are respectively connected to the agitator (1).

A speed generator (14) (pulse generator (PC)) consisting of a coil and a magnet is attached to the anti-load side of the motor (8) as a means for detecting the rotation of the dehydration tank (4).

Further, a pressure pipe (13) is connected to the water receiving tank (7), and a water level sensor (15) is disposed above the pressure pipe (13).

All of these mechanisms are housed in an outer box (16) via vibration isolating means, and a lid (17) and a top panel (18) that cover the top opening of the dehydration tank (4) are placed on the top of this outer box (16). For example, on the right side of this top panel (18), there is formed an operation panel (19) for setting the contents of the washing operation and displaying the set contents.

The operation panel (19) has a power on switch (22) and a power off switch (22) as switches as shown in Fig. 8.
3) A wash switch (24) that sets the wash time as a setting switch for various contents, a rinse switch (25) that sets the number of rinses, a spin switch (26) that sets the spin time, and a water level switch (26) that sets the water level used. 2
7) and a display unit (29) which is provided with a start switch (28) for starting the washing operation after setting the settings, and uses a light emitting diode (LED) lamp to display the set water level as a means of displaying the settings. A numerical display (30) is also provided to display the set washing time, number of rinses, and dehydration time.

Further, a control device (20) such as a microcomputer is arranged below the operation panel (19), and as shown in the block circuit diagram of the control system in FIG. switch (22> and off switch (2)
An AC/DC power converter as a DC power source (31) is connected via the DC power source (31), and a control device (20
) are connected.

Then, wash switch (24), rinse switch (2
5), dehydration switch (26), water level switch (27)
) The output signals from the start switch (28) and the speed generator (14) are introduced into the control device (20), and the control signals from the control device (20) are applied to the motor connected in parallel to the power source (33). (8), water supply valve (32), drain valve (
34) via a driver (35) and a triac (36) which is a switch element, and the control signal is introduced into a display unit (29) and a numeric display (30).
It was also introduced.

Next, I will explain the operation.

To perform the washing operation, as shown in the flowchart G in Fig. 10, first, the wash switch (24), the rinse switch (25), the spin-dry switch (26), and the water level switch (
27) to set the washing time, number of rinses, dehydration time, and water level to be used (STEP) The setting contents are displayed on the numerical display (30) as shown in Figure 11, and the example shown is standard. One of the settings is “Washing for 11 minutes”
``2 times of rinsing'' and ``5 minutes of dehydration'' are set.

When the start switch (28) is pressed, the washing process starts, followed by the rinsing process (sterapure), and the dehydration process (step 1), and then automatically ends.

As shown in the flowchart G of FIG. 12, the washing process is performed by opening the water supply valve (32) and draining the dewatering tank (4) and the water receiver f!
(7) When water starts being supplied into the interior and it is determined that the water has been supplied to the set water level based on the output from the water level sensor (15) to the control device (20), the motor (8) is energized. The stirring blade (3) rotates and a washing operation is performed (to step).

When the set washing time ends (stept), the stirring operation stops (stept) and the washing process ends.
Move on to the next rinsing process.

In this rinsing step, as shown in the flowchart in Figure 13, the drain valve (34) is first opened and the washing water in the dehydration tank (4) and water receiving tank (7) is drained out of the machine via the drain hose (21). Next, the motor (8) is energized, and the dehydration tank (4) and agitator (1) simultaneously rotate in one direction at high speed to perform dehydration for, for example, 2 minutes (Stepne). .

After this dehydration is completed, the drain valve (34) closes and the water supply valve (32)
is opened again and water is supplied (sterapure), and then the agitator (1) is rotated and rinsing is performed for, for example, 2 minutes by the stirring action of the stirring blade (3) in the same manner as in the washing step (step).

Once this first rinse is complete (ste nopuwa),
Drainage, dehydration, water supply,
The stirring action is performed again and a second rinse is performed (
Step power, Yo, Yu, Shi), move on to the next dehydration process.

In this dehydration process, the motor (8) rotates continuously in one direction, the agitator (1) and the dehydration tank (4) continuously rotate in one direction at high speed, and the clothes in the dehydration tank (4) are The contained water is transferred to the water receiving tank (
7) It is drained inside, and from here it is further connected to the drainage hose (21).
) is discharged outside the aircraft.

The washing, rinsing, and spin-drying series of washing steps all proceed automatically in this way, but the contents are initially set by the setting switches, and the rinsing step is also performed as described above, for example. A series of operations consisting of drainage, dehydration for 2 minutes, water supply, and stirring for 2 minutes is performed twice.

[Problem to be solved by the invention]

By the way, during the dehydration process during the rinsing process, the clothes are often thrown around by centrifugal force and stick to the surrounding wall in the dehydration tank. It is difficult to sufficiently loosen the stuck clothes within the set rinse time, and as a result, the clothes end up being rinsed while being stuck to the inner peripheral wall of the dehydration tank, making it impossible to rinse them thoroughly. There wasn't.

For example, in Japanese Patent Application Laid-Open No. 63-154195, the load amount of laundry is detected and the number of rinses is set accordingly. Simply increasing the number of rinses may not be sufficient to loosen the clothes within one rinse period.

An object of the present invention is to solve the above-mentioned disadvantages of the conventional example, and to sufficiently loosen the clothes during the subsequent rinsing by stirring even if the clothes stick to the inner circumferential wall of the dehydration tank due to dewatering in the rinsing process. The purpose of the present invention is to provide a method for controlling the operation of a washing machine.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention is a washing machine that can automatically perform a series of washing operation steps such as washing, rinsing, draining, and spin-driving using a droplet control circuit such as a microcomputer. A detection means is provided, and the detection means detects the load amount of the clothing during the washing process, and the time period until a load amount at least the same value as the load amount detected during the washing process is detected during the subsequent rinsing process. The main idea is to carry out the rinsing operation with consideration to the following.

(Function) According to the present invention, since the clothes are stirred in a loosened state in the washing step which is the first step in a series of washing operation steps, the amount of load on the clothes during this washing step can be detected. The means is opened for detection, and in the subsequent rinsing process, the rinsing agitation operation is performed at a time setting that includes the time taken until a load of the same value as the clothing load in the washing process is detected. As a result, in the rinsing process, the clothes are stirred in a loosened state and rinsed thoroughly in the same way as in the washing process.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is a flowchart of the operation of the rinsing process showing an embodiment of the washing machine operation control method of the present invention, and Fig. 2 is a flowchart of the operation of the same washing process. Since it is the same as that explained with reference to FIG. 9, detailed explanation will be omitted here.

In the method of the present invention, the washing process automatically proceeds to the washing process, rinsing process, and dehydration process according to the set washing operation details, but first, the washing process will be explained with reference to the flowchart of FIG. 2.

As before, the water supply valve (32) opens and water supply to the dehydration tank (4) and water receiving tank (7) starts, and the water level sensor (15) opens.
) to the control device (20), when it is determined that water has been supplied to the set water level (step SO), the control device (20) controls the motor to perform normal and reverse operation by energizing the motor (8). The process is started, and the forward and reverse movement of this motor (8) is controlled by the pulley (9) and V-belt (1).
0), a pulley (11), and a rotation transmitter (12) to the agitator (1), and the laundry is stirred by the stirring blade (3) to perform washing (steps).

When the motor (8) rotates, the speed generator (14) also rotates, and the speed generator generated voltage, which is a sine waveform outputted from the coil, is converted into a waveform-shaped voltage that is a 5V rectangular wave, and the speed generator (14) is ) will be introduced.

Figure 4 shows the relationship between the movement of the motor (8) and the pulses generated by the speed generator (14).As is well known, the energizing circuit of the motor (8) allows forward rotation (clockwise rotation) and reverse rotation (clockwise rotation). There is an energization pause time during the counterclockwise rotation), and the energization time is 80 pulses in the speed generator (14).

Figure 2 shows the steps of the stirring operation. As mentioned above, when the speed generator (PC) (14) reaches 80 pulses, the control device (20) turns off the power to the motor (8). )(stomach)())〕.

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

The control device (20) starts counting pulses due to this inertia on the condition that the power to the motor (8) is turned off [step (o)], but the inertial force soon disappears and no inertial pulses are output.

If there is no inertial pulse of 200 m5ec or more, [step (
ri)], the motor (8) and stirring blade (3) are also stopped, and the pulse count is stopped [step (Y)], and the motor (8) is rotated in the opposite direction from the previous time [step (M) ( (7)).

The washing operation by stirring operation is performed as described above, and when one minute before the end of the set washing time (step time), the number of inertial pulses is stored in the control device (2o) (step time).

FIG. 5 is a graph showing the relationship between the number of inertial pulses and the amount of load, and the amount of laundry loaded can be detected by counting the number of inertial pulses.

Then, when the set washing time is over (Stenbla),
The power supply to the motor (8) is stopped, the rotation of the stirring blade (3) is also stopped, and the washing process by the stirring operation is completed (Stepum).

Next, the process moves to the rinsing process, and here, as shown in the flowchart in Figure 1, the drain valve (34) is first opened and the washing water in the dehydration tank (4) and water receiving tank (7) is drained from the drain hose (21).
) is discharged from the machine through (Stenpro). Next, the motor (8) is energized and the agitator (1) and dehydration tank (4) are continuously rotated in one direction at high speed to perform dehydration for 2 minutes (
Step E) During this dehydration, the water contained in the clothes is discharged by centrifugal force into the water intake (7) through the through hole (5) of the dehydration tank (4), and from there the water is further discharged from the drain hose (
21) to the outside of the machine.

After removing the washing water contained in the clothes in this way, open the water supply valve (32) again to supply water to the dehydration tank (4) and water receiver tank (7). Once the water has been supplied to the set water level, For example, energize the motor (8) and turn on the agitator (1).
Rinse by rotating in the right direction and stirring (step a)
.

This water supply and rinsing by stirring are performed after spin-drying is complete, so the centrifugal force during spin-drying causes the clothes to fall into the spin-drying tank (4).
) The clothes start out stuck to the inner peripheral wall, but the water supply and subsequent agitation gradually loosen the clothes.

During rinsing by stirring, the number of inertial pulses is counted in the same way as during the washing process, and during this period, the number of inertial pulses output from the speed generator (14) is equal to the value stored one minute before the end of the washing process. If this happens (Stepsa), the clothes are loosened to the same degree as during the washing process, and it is assumed that rinsing with agitation is being performed in this state, and then rinsing with agitation for another 1 minute. to complete the first rinse (Step Ki, Yu).

Next, a second rinse is performed in the same manner as the first rinse (steps M, M, C, D, A, M). When the rinsing process is completed in this way, the final dehydration process is started.

In the dehydration process, after draining water, the motor (8) is continuously rotated in one direction to simultaneously rotate the dehydration tank (4) and the agitator (1) at high speed in one direction, and the centrifugal force causes the water contained in the clothing to be removed. Remove moisture.

[Effects of the Invention] As described above, the washing machine operation control method of the present invention allows the washing machine operation control method of the present invention to prevent the clothes from loosening even if they stick to the inner circumferential wall of the dehydration tank during the initial dehydration in the rinsing process. Rinsing by stirring is performed by creating a state in which the clothes are loosened in the same way as in the stirring washing process. As a result, rinsing is performed sufficiently well, and it is possible to prevent the rinsing time from ending with the clothes still clumped and not being rinsed thoroughly.

[Brief explanation of drawings]

FIG. 1 is a flowchart 1 of the operation of the rinsing process showing an embodiment of the washing machine operation control method of the present invention, FIG. 2 is a flowchart of the operation of the same washing process, and FIG. 3 is a flowchart showing the stirring operation. Figure 4 is a waveform diagram of pulses generated by the speed generator during rotation of the motor, Figure 5 is a graph showing the relationship between the number of inertia pulses and load amount, Figure 6 is a perspective view of an agitating fully automatic washing machine, and Figure 7 8 is a front view of the operation panel as above, FIG. 9 is a program circuit diagram of the control system as above, FIG. 10 is a flow chart of the washing process, and FIG.
12 is a flowchart showing a conventional example of a washing process, and FIG. 13 is a flowchart showing a conventional example of a rinsing process. (1)--Agitator (2)--Through hole (3)-
... Stirring blade (4) ... Dehydration tank (5) ... Through hole (6) ... Balancer (7) ... Water receiving tank (8) ... Motor (9) ... Pulley ( 10)...■Belt (11)...Pulley (12)...Rotation transmission part (12a) (
12b) - Drive shaft (13)... Impulse tube (
14)...Speed generator (15)...Water level sensor (16)...Outer box (18)...Top panel (20)...Control device (22)...On switch (24) ) Wash switch (17) Lid (19) Operation panel (21) Drain hose (23) Off switch (25) -- Rinse switch (26) (28 ) (29) (31) (33) (35) ... Dehydration switch ... Start switch ... Display section ... DC power supply ... Power supply ... Driver (27) Switch (30) ( 32) (34) (36) ... Water level switch ... Numerical display ... Water supply valve ... Drain valve ... Triac

Claims (1)

[Claims] Washing, rinsing, drainage, etc. are carried out using electronic control circuits such as microcomputers.
A washing machine capable of automatically operating a series of washing operation steps of dehydration is provided with a means for detecting the load amount of clothes applied to the rotary blade, and the load amount of clothes is detected by the detection means during the washing step, and the subsequent rinsing step is performed. A method for controlling the operation of a washing machine, characterized in that the rinsing operation is performed in consideration of the time until a load amount having at least the same value as the load amount detected during the washing process is detected.