JPH01285292A - Washing machine - Google Patents

Abstract

PURPOSE:To suppress noise generation, by setting a special course for setting the quiescence time limit of a motor longer than in the case of a standard course or setting the driving time limit of the motor shorter than in the case of the standard course, and for setting an operation practicing time longer than in the case of the standard course, besides the standard course. CONSTITUTION:On the washing operation of a long course, a motor is forward- operation-driven with the same driving time limit Ta as the driving time limit T1 of a standard course, and after that, the motor is stopped with a quiescence time limit Tb longer than the quiescence time limit T2 of the standard course, and is reverse-operation-driven with the driving time limit Ta, and after that, quiescence with the quiescence time limit Tb is repeated. In this case, the quies cence time limit Tb of the motor is longer than the quiescence time limit T2 of the case of the standard course, and so the attenuating time of the strength of water current is made longer, and in other words, a water current weakening degree is increased. As this result, when an agitating body is reversed from forward operation to reverse operation or from the reverse operation to the forward operation, then the water current is already attenuated, and waving or water splash is suppressed, and noise generation can be suppressed.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention is designed to perform operations such as washing and rinsing by repeatedly rotating the agitating body in the normal direction, resting it, reversing it, and resting it. Regarding washing machines.

(Prior Art) Conventionally, this type of washing machine has been equipped with a control circuit to control washing, rinsing, etc. , reverse drive, and stopping are repeated to execute the operation. In conventional washing machines, the control circuit controls a standard operation course (hereinafter referred to as "standard course") in which the motor drive time and rest time are set in a predetermined manner, and the operation execution time is also set in a predetermined manner. ) has been established. In addition, this type of washing machine is equipped with a drainage setting switch for setting whether or not to execute the final drainage operation, and by operating the switch, for example, it is possible to execute or stop the final drainage operation in the above standard course. I am trying to set it.

(Problem to be Solved by the Invention) However, in the above conventional device, during operation, when the rotation of the stirring body is reversed after stopping, the rotation direction of the stirring body is reversed with respect to the flow direction of the water flow in the tank. As a result, loud noises such as the sound of waves and splashing water were sometimes generated. Such noise is especially a problem when using a washing machine at night or when going to bed, and for this reason, even if you want to wash your clothes at night or when you go to bed, you have no choice but to refrain from using the washing machine. That was the reality.

The present invention has been made in view of the above circumstances, and its purpose is to suppress the generation of noise such as rippling noise caused by the reversal of the agitating body during washing and rinsing operations, and therefore, even during the night or while sleeping. To provide a washing machine which can wash laundry without any trouble and does not cause wrinkles on the laundry.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides that the stronger the water flow in the tank, the louder the noise such as the rippling sound when the stirring body is reversed, and the strength of the water flow is determined by the strength of the stirring motor. This was done by focusing on the fact that the length of the driving time depends on the length of the driving time, and the degree of weakening of the water flow also depends on the motor rest time.

Therefore, the present invention allows the motor for driving the agitator to be driven in normal rotation,
This control circuit is equipped with a control circuit that repeatedly controls operations such as washing, rinsing, etc. by repeating pause, reverse drive, and pause, and a drain setting switch that sets whether or not to execute a final drain operation in this control circuit. As the operation course controlled by the circuit, in addition to the standard course in which the motor is driven and stopped at a predetermined time period and is operated for a predetermined execution time,
A special course is provided in which the motor stop time is set longer than in the standard course or the motor drive time is set shorter than in the standard course, and the driving execution time is set longer than in the standard course; The circuit is configured to carry out control to prohibit execution of the final drainage operation, regardless of the settings of the drainage setting switch, when a special course is designated.

(Function) When the special course is executed, the motor stop time is set longer than the standard course, or the motor drive time is set shorter than the standard course.

In other words, in the case of the former setting, even if the motor drive time is the same as in the standard course and there is a strong water flow, the water flow will be sufficiently weakened due to the long motor stop time, and this situation When the motor and therefore the stirring body are reversed, ripples and water splashing can be suppressed. In addition, in the case of the latter setting, the motor drive time is shorter than in the standard course, so the water flow is not as strong, so even if the motor stop time is the same as in the standard course, the water flow will not be as strong when the agitator is reversed. It is possible to suppress ripples and water splashing in the water, and overall it is possible to suppress the generation of noise such as ripple sound and water splashing sound. Furthermore, by setting the operation execution time of such a special course longer than that of the standard course, it is possible to prevent a decrease in the cleaning effect.

Since this special course can suppress noise generation, it is suitable for washing at night or while sleeping. Therefore, especially when the user is sleeping, the laundry is often left as it is when washing in this special cycle is finished. Taking this point into consideration, if drainage is completed at the end of washing, there is a risk that the laundry in the tub may wrinkle due to being left in the tub for a long time. However, when the special course is designated, execution of the final draining operation is prohibited, so water remains in the tank, and as a result, the laundry does not wrinkle.

(Example) 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 washing machine, in which a washing tub 2 (shown in FIG. 4) and a dewatering tub (not shown) are arranged side by side. 3 is an operation box provided at the rear of the upper part of the outer box 1. Next, in Fig. 4, 4 is the washing tub 2.
A container-shaped stirring body disposed inside, 5 is a motor for driving this stirring body 4, and the rotational force of this motor 5 is transmitted to the stirring body 5 via a belt transmission mechanism 6 and a deceleration mechanism 7. It has become so. In addition, 8 is a drain port, 9 is a drain valve with an overflow port at the upper end, and this drain valve 9 is connected to the electromagnetic drive device 1.
0 (see FIG. 2) to open and close the drain port 8.

In FIG. 2, reference numeral 11 denotes a control circuit consisting of, for example, a microcomputer, which not only controls operations such as washing and rinsing, but also controls water supply operation, drainage operation, and dewatering operation. 12 is a drive circuit that turns on or off 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;
14 is a drive circuit for disconnecting (opening and closing) this water supply valve 13 based on a control signal from the control circuit 11; 15 is a drive circuit for disconnecting power to the electromagnetic drive device 10 for vertically moving the drain valve 9 described above; 16 is a dehydrating motor; 17 is a dehydrating motor 16 based on a control signal from the control circuit 11;
This is a drive circuit that turns off electricity.

FIG. 5 shows the panel 18 provided on the operation box 3. In this FIG. 5 and the above-mentioned FIG. 2, 19 is a course selection switch, which selects the standard course, Select and designate the careful course from the 1st grade course to the 50th grade course.

Reference numeral 20 denotes a washing time setting switch, which sets the execution time of the washing operation in accordance with the same 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. Reference numeral 22 denotes a drainage setting switch for setting whether or not to perform the final drainage operation, and this switch alternately sets whether or not to perform the drainage operation depending on the number of times the switch is turned on. Reference numeral 23 denotes a washing start switch which also serves as a temporary stop for starting each operation performed on the washing tub 2 side. In addition, 24 is a dehydration time setting switch, which sets the execution time of the dehydration operation according to the number of times it is turned on.

25 is a dehydration operation start switch which also serves as a temporary stop. Further, 26 to 29 are course display lamps that display the selected course, 30 to 33 are wash time display lamps that display the set washing execution time, and 34 to 36 are rinsing times that display the set number of rinses. display lamp,
Reference numeral 37 designates a drainage display lamp that indicates whether the final drainage operation is to be performed, and 39 to 40 designate dewatering time display lamps that display the set dewatering execution time.

The control circuit 11 is provided with a plurality of driving courses to be controlled by the control circuit 11 in its driving program.
The driving courses include a standard course, a careful course with two short courses, and a long course as a special course. Each of these courses includes water supply operation, washing operation, drainage operation,
This is a course in which a rinsing operation is automatically executed, and the washing and rinsing operations in each course are performed by rotating the motor 5 in the forward direction.

It involves repeating pauses, reversals, and pauses.

In each of the washing and rinsing operations of the standard course, the motor 5 is operated for a predetermined time period T1, as shown in FIG. 1(a).
The machine is driven in forward rotation and reverse rotation, and is stopped at a predetermined time period T2. Also, a washing operation is performed for a predetermined time period T, and a rinsing operation is performed for a predetermined time period T4. Note that the careful course differs from the standard course in that the execution time of the washing operation and the execution time of the rinsing operation are set longer, but the drive/pause time periods of the motor 5 are the same.

Further, the weak course differs from the standard course in that the execution time of the casual operation and the execution time of the rinse operation are set shorter, and the drive/stop 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 drive time Ta of the motor 5 during the washing and rinsing operations is the same as the drive time T in the standard course; The time limit Tb is the break time T for the standard course.
It is set longer than 2, and the washing operation execution time T
c and the execution time Td of the rinsing operation are also set longer than the respective execution times T3 and T4 of the standard course, and in particular, the total time of the drive time Ta of the motor 5 in this long course is the drive time limit in the case of the standard course. It is determined that the total time of T1 and the road interval are -.

Further, when either the standard course or the careful course 1 weak course is selected and designated by the course selection switch 19, the control circuit 11 switches the drainage setting switch 22 to 1.
・Set whether or not to perform final drainage according to the number of crops.

However, when the long course is selected and designated, execution of the final drainage operation is prohibited regardless of the number of times the drainage setting switch 22 is operated, that is, regardless of the settings made by the drainage setting switch 22. Note that when a long course is selected and designated, the display lamp 29 corresponding to the long course is displayed, but none of the other display lamps 30 to 37 are displayed, and the washing time setting switch 2 is
0. The number-of-rinsing setting switch 21 is also disabled.

Now, in the above configuration, when a standard course is selected and a washing operation is started, for example, in the washing operation of the standard course, the motor 5 is driven in normal rotation for a predetermined drive time period T1, and then for the next rest time period T2. , and the drive time limit T
The washing operation is repeatedly driven in reverse at step 1 and then stopped at the next stop time T2, and when the operation execution time T has elapsed, the washing operation is stopped. Also, during the rinsing operation, the motor 5 is repeatedly driven in the forward direction, stopped, driven in the reverse direction, and stopped at similar time intervals. In this "Wandering Monk" course, if "H" for execution of the final drainage operation is set by the drainage setting switch 22, this final drainage operation is executed and this "mark" course is carried out. ends.

On the other hand, when the long course is selected and the washing operation is started, in this long course washing operation, the motor 5 is driven in forward rotation with the same drive time Ta as the drive time T1 of the standard course, Next, the body IF in the standard course is paused for a pause time Tb which is longer than the time limit T2, then reversely driven for the drive time Ta, and then paused for the pause time Tb, which are repeated. In this case, since the body IL time Tb of the motor 5 is longer than the stop time T2 in the case of the standard course,
Even if the strength of the water flow formed by the drive of the motor 5 and thus the rotation of the agitator 4 is as strong as in the case of the standard course, the time for the strength of the water flow to attenuate is longer, that is, The degree of water flow weakening increases, and as a result,
When the agitator 4 is reversed from normal rotation to reverse rotation or from reverse rotation to normal rotation, the water flow has already weakened, and ripples and water splashing can be suppressed, and as a result, noise caused by ripples and water splashing can be suppressed. It can be suppressed. Thereafter, this washing operation ends when the execution time Tc has elapsed.

In this case, since the execution time Tc is longer than the execution time T of the washing operation in the case of the standard course, the cleaning effect does not decrease (in fact, the drive time Ta of the motor 5 is changed to the drive time T in the case of the standard course). .

Since the cleaning time is the same as that of the standard course, it is expected that the dirt will be removed better due to the longer pause time, and that the cleaning effect will be greater than that of the standard course.

In addition, even during this long course rinsing operation, the motor 5
Since the rinsing operation is started and stopped at the same time limit Ta-Tb as in the case of the washing operation in the long course, noise generation can be suppressed and the cleaning effect can be improved even when comparing the rinsing operation with the rinsing operation in the standard course. The same thing can be said above in this respect.

In this long course, the drainage setting switch 22
Execution of the final drainage operation regardless of the settings by
+L. Therefore, this long course ends when the final rinsing operation ends. Therefore, there is no risk of wrinkles occurring in the laundry. That is, this long course is suitable for washing at night or while sleeping because it can suppress the generation of noise, but on the other hand, when washing in this long course is finished, it is often left as it is. Taking this into consideration, if drainage is completed at the end of washing, the laundry in the tub will be left in a stacked state, which may cause wrinkles. However, according to this embodiment, when the long course is specified, execution of the final drain operation is prohibited, so water remains in the washing tub 2, and as a result, wrinkles occur in the laundry. Never.

In addition, in the above embodiment, the stop time period of the motor 5 for the washing operation and the rinsing operation in the special long course is set to be longer than that in the standard course. In this case, in the long course, the rotation time of the agitator 4 becomes shorter, so the strength of the water flow itself becomes weaker, and as a result, even if the rest time is not made longer, It is possible to suppress ripples and water splashing, and it is possible to suppress the generation of noise.

It should be noted that the present invention is not limited to the above embodiments, and can be implemented with various modifications without departing from the scope of the invention.

[Effects of the Invention] As is clear from the above description, according to the present invention, by executing a special course, it is possible to suppress the generation of noise such as rippling noise and water splashing noise when the stirring body is reversed. As a result, even if you want to wash your clothes in the middle of the night or before going to bed, you can do so without any problems, and furthermore, there is no reduction in the cleaning effect compared to the standard cycle. Furthermore, when a special course is designated, execution of the final drainage operation is prohibited regardless of the settings of the drainage setting switch, so that it is possible to prevent wrinkles from forming on the laundry.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a time chart showing the control form of the control circuit, FIG. 2 is a block diagram of the electrical configuration, and FIG. 3 is a perspective view of the external appearance of the washing machine. 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, 19 is a course selection switch, and 22 is a drainage setting switch.

Claims (1)

[Claims] 1. A control circuit that controls washing, rinsing, etc. by repeating forward rotation, pause, reverse rotation, and pause of the motor for driving the agitator, and whether or not to execute the final drainage operation is set in this control circuit. The course of operation controlled by this control circuit is as follows:
In addition to the standard course in which the motor is driven and stopped at a predetermined time period and the motor is operated for a predetermined execution time, the motor is set to have a stop time period longer than that of the standard course, or the motor drive time period is longer than that of the standard course. A special course is provided in which the operation execution time is set to be shorter and longer than that of the standard course, and when the special course is specified, the final drainage operation is performed regardless of the settings of the drainage setting switch. A washing machine characterized by having a configuration that performs control to prohibit execution.