JPH07100099B2 - Washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention is designed to perform operations such as washing, rinsing, etc. by repeating forward rotation, pause, reverse rotation, and pause of an agitator. Regarding the washing machine.

(Prior Art) Conventionally, this type of washing machine has a control circuit for controlling operations such as washing and rinsing, and the control circuit drives the motor for driving the agitator in the forward direction and stops it. The operation is performed by repeating reverse rotation drive and pausing. Thus, in the conventional washing machine, as a driving course controlled by the control circuit, a standard driving course (hereinafter referred to as a standard course) in which a driving time period and a resting time period of the motor are set in a predetermined manner and a driving execution time is also set in a predetermined manner Referred to).

(Problems to be Solved by the Invention) However, in the above-mentioned conventional one, in operation, the rotation direction of the stirring body is reversed with respect to the flow direction of the water flow in the tank due to the fold that is reversed after the rotation of the stirring body is stopped. As a result, loud noises such as rippling noise and water splashing noise may occur. Also, when the rinse operation is performed not in the rinse mode because water is stored in the tank but in the water pouring rinse mode in which water is supplied to the tank, the sound accompanying the water supply is constantly generated during the operation. Therefore, the sound of water supply could not be ignored. Such noise becomes a problem especially when the washing machine is used at night or at bedtime.Therefore, even if it is desired to make a selection at night or at bedtime, it is necessary to refrain from using the washing machine. It was a reality.

The present invention has been made in view of the above circumstances, and an object thereof is to suppress the generation of noise such as a ruffled sound due to the reversal of the stirring body during the operation of washing and rinsing, and further rinsing in the water injection mode. It is an object of the present invention to provide a washing machine that can eliminate the noise caused by the water supply noise caused by driving, and can therefore perform washing without any trouble even at night or at bedtime.

[Structure of the Invention] (Means for Solving the Problems) According to the present invention, the stronger the water flow in the tank, the greater the noise such as the ruffled sound when the agitator is turned over. It depends on the length of the drive period, and
This is done by paying attention to the fact that the degree of weakening of the water flow is influenced by the pause time of the motor. Thus, the present invention provides a control circuit for controlling operations such as washing, rinsing, etc. by repeating forward rotation drive, pause, reverse rotation drive and pause of the motor for driving the stirring body. In addition to the standard course in which the motor is driven / paused at a predetermined time and the operation is performed at a predetermined execution time as a course of operation controlled by the motor, the rest time of the motor is longer than that in the standard course or the motor is driven. A special course with a time limit set shorter than that of the standard course and an operation execution time set longer than that of the standard course is provided, and in this special course, the rinse operation in the pool rinse mode is performed without performing the rinse operation in the water injection rinse mode. I'm trying to do only. Further, in the standard course, at least one rinsing operation is preferably in the water rinsing mode. In this case, the number of executions of the rinsing operation included in the special course is the number of executions of the rinsing operation in the water rinsing mode included in the standard course. It is more preferable to set one more time for each time.

(Operation) When the operation is performed according to the special course, the rest period of the motor is set longer than that in the standard course, or the driving period of the motor is set shorter. In other words, in the former setting, even if the driving time of the motor is the same as in the case of the standard course and even if the water flow is strong, the water flow will be weakened sufficiently due to the long motor rest time. Thus, when the motor and the agitator are inverted, it is possible to suppress ripples and water splash. Also, in the latter setting, the motor drive time is shorter than in the standard course, so the water flow is not so strong, so even if the motor stop time is the same as in the standard course, the stirring body reversal In this case, it is possible to suppress the ripples and splashes of water, and it is possible to suppress the generation of noise such as ripples and splashes of water as a whole. Then, by setting the rinsing operation included in the special course to only the rinsing mode, it is possible to eliminate the water supply noise that occurs in the case of the water rinsing mode. Furthermore, if at least one rinsing operation in the standard course is set to the water injection mode, it is possible to prevent the rinsing effect per unit time from deteriorating as compared with the case where the total rinsing operation is set to the rinsing mode. In this case, the special course Since the rinsing operation in the above is a trial rinsing, there is a concern that the rinsing effect will decrease, but this is because the number of times of rinsing operation of this special course is one for each rinsing operation of the standard course water injection mode. Since many are set, the rinsing effect does not decrease even though it becomes longer, and since this special course is suitable for using the washing machine at night or at bedtime, it may take a long time to drive. No problem.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

First, in FIG. 3, reference numeral 1 denotes an outer box of a two-tub type washing machine, inside which a washing tub 2 (shown in FIG. 4) and a dewatering tub (not shown) are arranged in parallel. Reference numeral 3 is an operation box provided in the upper rear part of the outer box 1. Next, in FIG. 4, 4 is a washing tub 2.
A container-shaped stirrer 5 disposed inside is a motor for driving the stirrer 4, and the rotational force of the motor 5 is transmitted to the stirrer 5 via the belt transmission mechanism 6 and the speed reduction mechanism 7. It has become so. In addition, 8 is a drain port, 9 is a mouth body having an overflow port at the upper end and a drain valve body at the other end.
Is moved up and down by an electromagnetic drive device 10 (see FIG. 2).

In FIG. 2, reference numeral 11 denotes a control circuit including, for example, a microcomputer, which controls not only operations such as washing and rinsing but also dehydration operation. Reference numeral 12 is a drive circuit for electrically connecting and disconnecting the motor 5 based on a control signal from the control circuit 11, 13 is an electromagnetically driven water supply valve for supplying water to the washing tub 2, and 14 is based on a control signal from the control circuit 11. A drive circuit for turning on / off (opening / closing) the lever water supply valve 13, and 15 is an electromagnetic drive device for vertically moving the mouth 10 described above.
A drive circuit for disconnecting 10 electricity, 16 a dehydration motor, 17
This dehydration motor is based on the control signal from the control circuit 11.
It is a drive circuit that cuts off electricity by 16.

FIG. 5 shows the panel 18 provided on the operation box 3. In FIG. 5 and the above-mentioned FIG. 2, 19 is a course selection switch, which corresponds to the standard course, depending on the number of times the switch is turned on. Elaborate course, weak course, long course can be selectively selected. A washing time setting switch 20 sets the execution time of the washing operation according to the number of ON operations when the washing operation is performed independently. Reference numeral 21 denotes a rinsing number setting switch, which sets the rinsing number according to the number of ON operations when the rinsing operation is performed independently. 22 is a drainage setting switch for setting the presence / absence of drainage operation, and when this switch is turned on, execution of drainage operation is stopped. Reference numeral 23 is a washing start switch that also serves as a pause for starting each operation performed on the side of the washing tub 2. still,
A dehydration time setting switch 24 sets the execution time of the dehydration operation according to the number of ON operations. 25 is a dehydration operation start switch that also serves as a temporary stop. Also, 26 to
29 is a course display lamp for displaying the selected and designated course, 30 to 33 are wash time table lamps for displaying the set wash execution time, 34 to 36 are rinse number display lamps for displaying the set rinse number, Reference numeral 37 is a drainage display lamp that displays "existence" of the drainage operation, and 39 to 40 are dehydration time display lamps that display the set dehydration execution time.
In addition, 41 shown in FIG. 2 is a buzzer.

Thus, the control circuit 11 is provided with a plurality of driving courses that it controls in its driving program, and the driving courses include a standard course, an elaborate course, and a weak course. Furthermore, a long course is provided as a special course. Each of these courses is a course for automatically performing a water supply operation, a washing operation, a draining operation, and a rinsing operation. The washing and rinsing operations in each course cause the motor 5 to rotate normally, stop, reverse, and stop. It is to repeat things.

Here, in each of the washing and rinsing operations of the standard course, as shown in FIG. 1 (a), the motor 5 is driven for a predetermined time T ₁
The forward rotation drive and the reverse rotation drive are performed at a predetermined time T ₂ and the washing operation is performed at a predetermined time T ₃ and the rinse operation is performed at a predetermined time T ₄ . Then, in this standard course, the rinsing operation included in this is performed three times, and the first rinsing operation and the second rinsing operation are performed in a state where water is accumulated in the washing tub 2. By the way, it is set to rinse mode, and the third (final)
The rinsing operation is performed in a water injection rinsing mode in which the water supply valve 13 is opened to supply water. It should be noted that, unlike the standard course, in the elaborate course, the execution time of the washing operation and the execution time of the rinsing operation are set to be long, and the drive / rest time of the motor 5 is the same. Further, the weak course is different from the standard course in that the execution time of the washing operation and the execution time of the rinsing operation are set to be short, and the driving / rest time of the motor 5 is the same as the standard course.

On the other hand, in the long course, as shown in Fig. 1 (b), the driving time period Ta of the motor 5 at the washing operation and the rinsing operation but is identical to the drive time period T ₁ of the case of the standard course, rest timed Tb is set longer than the rest period T ₂ in the case of the standard course, and the running time Tc of the washing operation and the running time Td of the rinsing operation are also set to the execution times T ₃ and
It is set longer than T _4, and in particular, the total time of the drive time Ta of the motor 5 in this long course is set to be substantially the same as the total time of the drive time T _{1 in} the case of the standard course. Furthermore, in this long course, all rinse operations included in this are set as a rinse mode,
In this case, the number of executions of the rinsing operation is set to be one more since the water rinsing mode is one of the rinsing operations in the standard course. That is, in the standard course, the rinse operation in the accumulation rinse mode is performed twice, and the rinse operation in the water injection rinse mode is executed once. Therefore, in the special course, the rinse operation in the accumulation rinse mode is executed four times. Therefore, the first rinsing operation and the second
The rinsing operation corresponds to the first rinsing operation and the second rinsing operation of the standard course, and the third rinsing operation and the fourth rinsing operation of the special course become the third rinsing operation of the water rinsing mode of the standard course. Correspond.

Further, the control circuit 11 selects one of the course display lamps 26 to 28 corresponding to the corresponding course when the standard selection course, the elaborate course, or the weak course is selected by the course selection switch 19. In addition to displaying, display lamps corresponding to the wash execution time and the number of rinses and the presence or absence of drainage in the corresponding course among the display lamps 30 to 37 are displayed, and when the long course is selected and designated. ,
The display lamp 29 corresponding to the long course is displayed, but the other display lamps 30 to 37 are not displayed.

Further, the control circuit 11 causes the buzzer 41 to ring when any of the standard course, the elaborate course, and the weak course is executed. However, when the long course is executed, the buzzer 41 does not ring. This makes it possible to more thoroughly implement the basic idea of the present invention of preventing noise, and originally, turning the buzzer on and off is a work that requires the user's judgment, but in this case, it is possible to link it with the course selection operation. It can be done without any hassle.

Now, in the above configuration, for example, when the standard course is selected and designated and the selective operation is started, in the washing operation of the standard course, the motor 5 is normally driven at a predetermined drive time period T ₁ and the next rest time period pause at T _2, and driven to rotate reversely by the drive time period T _1, repeated to rest in the next pause time period T _2, and if elapsed the operation execution time T _3, stop this washing operation. Also in the rinsing operation, the normal rotation drive / pause / reverse rotation drive / pause of the motor 5 is repeated in the same time period. However, the first rinse operation and the second rinse operation are
The trial rinse mode is performed, and the third rinse operation is performed in the water injection mode.

On the other hand, when the long course is selected and the washing operation is started, the motor 5 is driven in the same driving time period Ta as the driving time period T _{1 of the} standard course in the washing operation of the long course.
The forward rotation is performed at, the rest is stopped at the rest time Tb longer than the rest time T ₂ in the standard course, the reverse rotation is performed at the drive time Ta, and then the rest time Tb is stopped. Then, in this long course, all the rinsing operations included in the long course are executed in the rinsing mode.

In this long course, the rest period Tb of the motor 5 is longer than the rest period T _{2 in} the case of the standard course, so that the strength of the water flow formed by the drive of the motor 5 and the rotation of the stirring body 4 is increased. As in the case of the standard course, the strength of the water flow is attenuated for a long time, that is, the degree of weakening of the water flow is increased, and as a result, the stirring body 4 is not rotated normally. When reversing to the reverse direction or from the reverse direction to the normal direction, the water flow is already weakened, and it is possible to suppress the ripples and water splashes, and as a result, it is possible to suppress the generation of noises associated with the ripples and water splashes. After this, this washing operation ends when the execution time Tc elapses. In this case, since the execution time Tc is longer than the execution time T ₃ of the washing operation in the standard course, the cleaning effect does not decrease, but rather the drive time Ta of the motor 5 is changed to the drive time T _{1 in the} standard course. Since it is the same as the above, it is expected that the longer the rest time is, the better the dirt will be removed and the cleaning effect will be more than that of the standard course.
In addition, even in this long course rinsing operation, the motor 5
The same time period as in the case of washing operation in the long course
Since driving / pausing at Ta / Tb, even when the rinsing operation and the rinsing operation on the standard course are compared, the same points as described above can be said in terms of suppressing noise generation and improving the cleaning effect. Further, since all the rinsing operations are performed in the rinsing mode, unlike the case where the rinsing operation is performed in the water pouring rinsing mode, no noise is generated by the water supply into the washing tub 2.

In particular, in the standard course, at least one rinsing operation is performed in the water-pouring rinsing mode, so that the rinsing effect can be prevented from lowering as compared with the case where the pre-rinsing operation is in the rinsing mode.

Furthermore, since all rinse operations in the special course are in the rinse mode, there is concern that the rinse effect may be reduced. However, for each run in the water injection rinse mode of the standard course, one rinse operation in the long course is required. Since many are set, the rinsing effect does not decrease, although the time becomes longer. Moreover, since this long course is suitable for use in a washing machine at night or at bedtime,
Even if it takes a long time to drive, there is no problem in use.

In the above embodiment, the pause time of the motor 5 for the washing operation and the rinsing operation in the long course, which is a special course, is set longer than that of the standard course. However, the drive time of the motor 5 in the long course is set to be longer than that of the standard course. May be set shorter. In this case, in the long course, the rotation time period of the stirring body 4 is shortened, so that the strength of the water flow itself is weakened, and as a result, it is possible to suppress ripples and water splashes without prolonging the rest time period. Generation of noise can be suppressed.

The present invention is not limited to the above-described embodiments, but can be implemented with various modifications without departing from the scope of the invention, for example, it can be applied to a washing machine for combined use of dehydration.

[Effects of the Invention] As is clear from the above description, according to the present invention, the following effects can be obtained.

According to the washing machine of claim 1, by executing the special course, it is possible to suppress the generation of noise such as rippling sound and water splashing sound when the agitator is inverted, and moreover, to supply water during the rinsing operation in the special course. No noise is generated, and as a result, even if you want to do laundry at night or at bedtime, you can do this without any trouble, and there is no reduction in the cleaning effect compared to the standard course. You can

According to the washing machine of the second aspect, in addition to the same effect as described above, it is further excellent in the rinsing effect in the standard course.

According to the washing machine of the third aspect, the rinsing effect can be obtained in the same manner as in the case of the standard course even though the rinsing operation included in the special course is all in the rinsing mode.

[Brief description of drawings]

The drawings show one embodiment of the present invention, FIG. 1 is a time chart for showing a control mode of a control circuit, FIG. 2 is a block diagram of an electrical configuration, FIG. 3 is an external perspective view of a washing machine, and FIG. FIG. 4 is a longitudinal sectional view of the washing tub side, and FIG. 5 is a front view of the panel. In the figure, 2 is a washing tub, 4 is an agitator, 5 is a motor, 11 is a control circuit, and 19 is a course selection switch.

Claims (3)

[Claims] 1. A motor for driving an agitator is driven in a normal direction, stopped,
In the case of having a control circuit for controlling operations such as washing, rinsing, etc. by repeating reverse driving and pausing, the motor is driven / paused and executed for a predetermined period as a course of operation controlled by this control circuit. In addition to the standard course in which the operation is executed in time, the rest period of the motor is set to be longer than that in the standard course or the drive period of the motor is set to be shorter than that in the standard course, and the operation execution time is longer than that in the standard course A washing machine characterized in that a special course set for a long time is provided, and the rinsing operation included in this special course is limited to a rinsing mode. 2. The washing machine according to claim 1, wherein the standard course has at least one rinsing operation in a water-pouring rinsing mode. 3. The number of executions of the rinse operation included in the special course is set to increase by one for each execution of the rinse operation in the water injection mode included in the standard course. Item 2. A washing machine according to item 2.