JP3234428B2 - Fully automatic washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in control during a rinsing operation in a fully automatic washing machine. In particular, the present invention relates to an improvement in water supply control in a dehydration rinsing operation in which water is contained in laundry and then dehydration is performed.

[0002]

2. Description of the Related Art Conventionally, in a fully automatic washing machine for performing the above-mentioned dehydration rinsing, various methods have been used in order to enhance the rinsing effect. For example, Tokiko 2 420
As disclosed in Japanese Patent Publication No. 00, a method for changing the time required for water supply and dehydration for dehydration rinsing and dehydration and the number of repetitions according to the amount of laundry is provided, and the laundry is sufficiently contained with water. A method of rotating the washing / dewatering tub slowly by repeatedly turning on and off the motor while supplying water to the washing / dewatering tub has also been considered.

One of the features of dehydration rinsing is that effective rinsing can be performed in a short time and with a small amount of water used, and the amount of water supplied has been controlled by time as follows. Therefore, the amount of water supply per unit time (hereinafter referred to as "water supply amount") was first estimated. That is, since the water level rises faster as the water supply amount increases, the arrival time from when the water reaches one upper water level to another lower water level of the washing and dewatering tub is measured, and if the arrival time is short, the water supply amount is large, Alternatively, if the above-mentioned arrival time is long, it has been determined that the water supply amount is small. And at the time of dehydration rinse
Water supply time is controlled to supply water suitable for the amount of laundry.

[0004]

However, according to experiments, even when the water supply amount is the same, the rise time of the water level varies depending on the quality of the laundry and the amount of laundry. For example, even when the amount of water supplied is generally the same, if the amount of laundry in the washing and dewatering tub is large, the above arrival time is short. In addition, even with the same water supply amount, depending on the cloth quality of the laundry, more specifically, in the ratio of the synthetic fiber and the cotton in the laundry, the arrival time becomes longer when the proportion of the synthetic fiber is large and the proportion of the cotton is small. .

Therefore, when the arrival time becomes longer, the detected water supply amount is considered to be smaller than the actual water supply amount. Conversely, when the arrival time becomes shorter, the detected water supply amount is considered to be larger than the actual water supply amount. If the detected amount of supplied water is considered to be greater than the actual amount of supplied water, the amount of water supplied into the washing and dewatering tub will be less than the required amount of water, so that sufficient rinsing will not be performed. If the detected water supply amount is considered to be smaller than the actual water supply amount, the water supply time becomes longer than necessary, so that time is wasted and the water amount supplied into the washing and dewatering tub is the required water amount. And more waste.

Therefore, an object of the present invention is to solve the above-mentioned technical problems and to determine the amount of water supply accurately, so that rinsing is sufficiently performed, and the rinsing time and water are fully wasted without wasting water. Is to provide a machine.

[0007]

According to a first aspect of the present invention, there is provided a fully automatic washing machine according to the first aspect of the present invention. In a fully automatic washing machine for performing washing, a cloth detecting means for detecting the quality of the laundry in the washing and dewatering tub, a water supply means for supplying water to the washing and dewatering tub, and a washing and dewatering tub in which the laundry is placed are provided. When water is supplied from the water supply means, a water supply capacity measurement means for measuring the water supply capacity, and a water amount determination means for determining a water amount required for dehydration rinsing based on output signals of the water supply capacity measurement means and the fabric detection means, In the dehydration rinse, so that the amount of water determined by the water amount determination means is supplied into the washing dehydration tub,
Water supply control means for controlling a water supply time of the water supply means.

A fully automatic washing machine according to a second aspect of the present invention is the fully automatic washing machine according to the first aspect, further comprising a laundry amount detecting means for detecting a laundry amount in the washing and dewatering tub, and the water amount determining means comprises: The water amount is determined based on the output signal of the laundry amount detecting means in addition to the output signals of the water supply capacity measuring means and the cloth quality detecting means. Further, in the fully automatic washing machine according to claim 3, in the fully automatic washing machine according to claim 1 or 2, the cloth quality detecting unit is configured to supply water to a predetermined water level in the washing dehydration tub in which the laundry is put. When the laundry is agitated for a predetermined time after being supplied, a falling water level is detected, and cloth quality is detected based on the water level reduction amount.

Further, a fully automatic washing machine according to claim 4 is the fully automatic washing machine according to any one of claims 1 to 3,
The water supply capacity measuring means is characterized in that when water is supplied into the washing and dewatering tub, the time when the accumulated washing water level changes from a preset lower water level to an upper water level is detected.

[0010]

According to the configuration of the first aspect of the present invention, even if the water supply capacity measured by the water supply capacity measuring means is different from the actual one depending on the quality of the laundry in the washing and dewatering tub, The amount of water necessary for dehydration and rinsing is corrected and determined by the water amount determining means based on the detected water supply capacity and the cloth obtained from the cloth detecting means. The water supply control means obtains a water supply time for supplying the determined water amount, and by supplying water according to the water supply time, it is possible to accurately supply a sufficient amount of water in the dehydration rinsing, so that rinsing can be sufficiently performed. In addition, there is no water supply time and no waste of water.

According to the configuration of the invention according to claim 2,
In addition to the operation according to claim 1, even if the detected water supply capacity may be different from the actual water supply capacity depending on the amount of the laundry in the washing and dewatering tub, the dehydration rinse is performed by the water amount determination means. Is determined based on the amount of laundry, which is corrected based on the amount of laundry. Therefore, the amount of water is more accurate without being affected by the quality and amount of laundry.

According to the configuration of the invention according to claim 3,
In addition to the function described in claim 1 or 2, the following function is provided. That is, since the water absorption capacity of the laundry varies depending on the cloth quality of the laundry, for example, synthetic fibers, cotton, and the like, when the laundry is stirred in the supplied washing dehydration tub, the amount of water according to the laundry cloth quality is increased. Water is absorbed by the object, and the water level in the washing and dewatering tub drops accordingly. By detecting the amount of change in the lowered water level, the quality of the laundry can be detected. In addition, since the drop in water level according to the laundry cloth quality is measured, when the water supply capacity is measured by a change in the water level, the effect of the cloth quality on the water supply capacity is directly measured, and the cloth itself is measured. The present invention can be applied to a case where it cannot be determined.

According to the configuration of the invention according to claim 4,
In addition to the operation according to any one of claims 1 to 3, since the time required for the supplied water to fill the volume determined by the preset lower water level to the upper water level and the water supply capacity are inversely related, If this relationship is obtained in advance, the above-mentioned water supply capacity can be obtained from the above-mentioned time.

[0014]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a partially sectional side view showing a schematic configuration of a fully automatic washing machine according to one embodiment of the present invention.
In FIG. 1, this fully automatic washing machine includes a box-shaped main body 1,
A washing / dewatering tub 5 capable of storing laundry and washing water is provided inside the main body 1. The washing and dewatering tub 5 includes a rotatable inner tub 5c having a number of small holes 5a formed on the surface thereof, and an outer tub 5b that wraps the inner tub 5c and can store washing water therein. A support rod 3 and a spring 4 are attached between the outer tub 5b and the main body 1 to fix the washing and dewatering tub 5. Inner tank 5c
The laundry is accommodated by opening a lid 20 provided at the center of the upper surface of the main body 1 so as to be freely opened and closed.

As a means for agitating the stored laundry and washing water, a pulsator 7 having a disk shape and having irregularities on the upper surface thereof is provided at the bottom in the inner tub 5c. Also,
A bearing 6 for rotatably supporting the pulsator 7 and the inner tank 5c, a motor 12 for driving rotation, and a pulley 1 constituting a power transmission mechanism for transmitting rotation of the motor 12 to the bearing 6
1, a belt 15, and a pulley 14 are provided at a lower portion in the main body 1. The bearing 6 switches transmission of rotation by a built-in clutch, rotates only the pulsator 7 during washing and rinsing, and rotates the inner tub 5c and the pulsator 7 during dehydration.
Both rotate in one direction at high speed. When supplying water for the dehydration rinse, both the inner tank 5c and the pulsator 7 rotate in one direction at a low speed.

In the upper part of the main body 1, as a means for supplying water to the washing and dewatering tub 5, a water supply facility such as an external water supply (not shown).
And a pipe 21 which is connected to the
And a water supply valve 22 composed of an electromagnetic valve is provided in the middle of the pipe 21. By opening the water supply valve 22, the washing water is supplied into the washing and dewatering tub 5 from the above water supply facility. Also, as a drainage means from the washing and dewatering tub 5 at a lower portion in the main body 1,
A pipe 17 led out of the main body 1 from a drain port (not shown) provided on a side portion of the bottom surface of the outer tank 5b;
A drain valve 18 composed of a solenoid valve is provided in the middle of the pipe 17. When the drain valve 18 is opened, the washing water is discharged from the washing / dewatering tub 5 to the outside of the main body 1, and when the drain valve 18 is closed, the washing water is stored in the washing / dewatering tub 5.

At the rear of the main body 1, a water level sensor 9 fixed to the upper part of the main body 1 and a water level sensor 9 are provided as means for detecting the level of the washing water stored in the washing and dewatering tub 5. A pressure hose 8 connected to an air trap 5d provided at one corner of the bottom of the outer tank 5b is provided. When the water level of the washing water in the washing dehydration tub 5 rises,
The pressure in the air trap 5d increases. By detecting this pressure with a water level sensor 9 via a pressure hose 8, the water level in the washing and dewatering tub 5 is detected.

On the upper part of the main body 1, there are provided an operation key 19 to which a user can give commands such as operation and stop, and a control unit (not shown) for controlling according to the commands. . Next, the electrical configuration of the control unit of the above-described fully automatic washing machine will be described with reference to FIG. FIG. 2 is a block diagram showing an electrical configuration of the control unit. The control unit includes a microcomputer 31 as a control center, and the microcomputer 31 has a built-in timer 32 which is a time measuring means for taking control timing. The microcomputer 31 executes control based on programs and data stored in a ROM, a RAM (not shown) or the like in advance.

The microcomputer 31 has an operation key 19, a water level sensor 9, a load detection circuit 34 for detecting the amount of laundry, a cloth detection circuit 35 for detecting the cloth quality of the laundry, and the lid 2.
A detection output of the upper cover safety switch 39 or the like that detects a closed state of 0 and outputs an operation command is input. Further, the microcomputer 31 opens and closes a buzzer circuit 40 for notifying the completion of work by sounding a buzzer, an LED drive circuit 41 for blinking an LED for notifying an operation state, a motor drive circuit 33 for driving the motor 12, and a water supply valve 22. Water supply valve drive circuit 3
7. The drain valve drive circuit 38 for opening and closing the drain valve 18 is controlled.

The load detection circuit 34 detects a current flowing through the motor 12 when the pulsator 7 is driven.
The amount of the laundry is determined by comparing the detection output with a predetermined reference value. The load detection circuit 34 is not limited to the above-described method. For example, the load detection circuit 34 detects the rotation angle and the rotation time of the inertial rotation after the drive of the motor 12 is stopped during the washing process, and based on the detection output, The amount may be determined.

The above-mentioned cloth quality detection circuit 35 measures the amount of decrease in the water level after the laundry is supplied to the washing / dewatering tub 5 to a certain water level and the laundry is stirred for several seconds. For example, the water absorption capacity of laundry varies depending on the fabric quality of laundry, such as synthetic fibers and cotton.
The amount of water absorbed in the laundry, which corresponds to the amount of water absorbed, is detected as the amount of change in the water level in the washing dewatering tub 5 that decreases.
The cloth quality of the laundry is detected.

Next, the control of the operation in the fully automatic washing machine will be described with reference to FIG. FIG.
Is a microcomputer 3 in this fully automatic washing machine.
4 is a flowchart showing the control content of FIG. The laundry and the detergent are put into the washing / dewatering tub 5 in advance. And
When an operation start command arrives at the control unit from the operation key 19, the operation is started.

First, the drain valve 18 is closed and the water supply valve 22 is closed.
Is opened, water is supplied into the washing and dewatering tub 5, and the amount of water supplied per unit time is measured as the water supply capacity. That is, the time (arrival time T) from when the water level sensor 9 detects a predetermined lower water level to when it detects a predetermined upper water level at the time of water supply is measured by the timer 32 (step S).
1).

Next, the cloth quality of the laundry in the washing and dewatering tub 5 is detected by the cloth quality detection circuit 35. That is, when the water level sensor 9 detects the upper water level, the water supply valve 22 is closed once, the motor 12 is driven for a predetermined time, for example, several seconds, and the laundry is stirred. The water level sensor 9 detects the water level after a predetermined time has elapsed from the stirring. This detected water level is compared with the above-mentioned upper water level, and the amount of decrease in the water level between the two is derived (step S2).

In step S3, the derived water level drop is compared with a predetermined reference value, and based on the result, the fabric quality of the laundry, specifically, the synthetic fiber in the laundry, is determined. Is determined relative to the ratio of the clothing included in the clothing. And, as a result of the judgment,
The water supply amount is determined based on the setting that the arrival time T for the same water supply amount is longer as the percentage of the synthetic fiber clothing is larger.

More specifically, if the laundry contains a large percentage of synthetic clothing and a small percentage of cotton clothing, 0 seconds ≦ arrival time according to Table 1 in FIG. When T <12 seconds, the water supply amount is “large”, and when 12 seconds ≦ arrival time T <25 seconds, the water supply amount is “medium”, and 25 seconds ≦
In the case of the arrival time T, the water supply amount is determined to be "small" and the water supply amount is determined (step S4). In addition, if the cloth quality of the laundry is about the same as the percentage of synthetic clothing and the percentage of cotton clothing, the amount of water supply is determined according to Table 2 in FIG. 3 (step S5). Also, if the laundry contains a small percentage of synthetic clothing and a large percentage of cotton clothing, the amount of water supply is determined according to Table 3 in FIG. 3 (step S6).

Next, after the water supply valve 22 is opened and water is supplied to a predetermined water level, a washing step in which the pulsator 7 is driven for a predetermined time is performed (step S7). After the washing process is completed, the drain valve 18 is opened, and the washing water is discharged (step S8). After draining, a dehydration step of rotating the inner tank 5c and the pulsator 7 at a high speed for a predetermined time is performed (step S9).

Next, a dehydration rinsing step is performed. First, prior to water supply, a preset amount of water required for dehydration rinsing is read from ROM, RAM, or the like. The water supply time for supplying this amount of water into the washing and dewatering tub 5 is determined in step S4.
It is derived from a data table stored in a ROM, a RAM or the like based on the water supply amount determined in steps (6) to (6). The water supply valve 22 is opened according to the derived water supply time, and the washing and dewatering tub 5 is opened.
Water is supplied inside. During the dehydration and rinsing process, drain valve 1
8 is left open. And during water supply, the inner tank 5c
In addition, the pulsator 7 rotates at a low speed (because the motor 12 is intermittently energized), and the laundry is uniformly sprayed with water. After the water supply is completed, the inner tub 5c and the pulsator 7 are rotated at a high speed for a predetermined time to perform dehydration. This water supply and dehydration are repeated a predetermined number of times, for example, twice (step S10). The amount of water required for the dehydration rinse may be set by the user each time, or may be automatically set to a value corresponding to the amount of laundry. Further, the above water supply time is not limited to the derivation from the data table, but may be given as a case-specific instruction in the program, and the derivation method is not limited as long as it is based on the water supply amount.

Next, after the water supply valve 22 is opened and water is supplied to a predetermined water level, the pulsator 7 is driven for a predetermined time, so that a rinsing step is performed (step S1).
1). Thereafter, as in steps S8 and S9, drainage and dehydration steps are performed (step S12), and a series of steps is completed. Thus, in steps S3 to S6,
Since the cloth content of the laundry, for example, the percentage of synthetic fiber, cotton, etc., is taken into account, the water supply amount can be correctly estimated without being affected by the cloth quality even when the water supply amount is determined from the above-mentioned arrival time T. In step S10, a water supply time for supplying a water amount necessary for dehydration rinsing is determined based on a correct water supply amount, and water supply for dehydration rinsing is performed accurately according to the water supply time, so that there is no excess or shortage of water amount. As a result, rinsing can be sufficiently performed, and no water supply time and no waste of water are generated.

In step S2, since the decrease in the water level in the washing and dewatering tub 5 according to the cloth quality of the laundry is measured, the influence of the cloth quality on the water level rise can be directly measured, and the cloth itself cannot be determined. Even if applicable. Further, by treating the determination results of the water supply amount from step S4 to step S6 as stepwise results, the control is simplified. Therefore, the capacity of the RAM, ROM, and the like for storing the data is small, and the possibility of cost increase is reduced.

Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the detection of the cloth quality of the laundry is performed after the measurement of the arrival time T at the time of water supply. On the other hand, in the present embodiment, the detection of the arrival time T at the time of water supply is performed. The difference is that it is done before. FIG. 4 is a flowchart showing the control contents of the second embodiment.
Note that the configuration shown in FIGS. 1 and 2 is also the same in the present embodiment, and a description thereof will be omitted.

When the operation is started, first, the cloth quality of the laundry in the washing / dewatering tub 5 is detected by the cloth quality detection circuit 35. That is, the drain valve 18 is closed, the water supply valve 22 is opened, and water is supplied to the predetermined water level in the washing and dewatering tub 5. When the water level sensor 9 detects this predetermined water level,
Once the water supply valve 22 is closed, the motor 12 is driven for a predetermined time, for example, several seconds, and the laundry is stirred.
The water level sensor 9 detects the water level after a predetermined time has elapsed from the stirring. The detected water level is compared with the above-mentioned predetermined water level, and the amount of decrease in the water level between the two is derived (step S).
21).

In step S22, the quality of the laundry is determined from the decrease in water level derived in step S21 in the same manner as in step S3. Then, based on the determined laundry quality, the following steps S23 to S23 are performed.
8, the water supply amount is determined. First, a case will be described in which the laundry contains a large percentage of synthetic clothing and a small percentage of cotton clothing. Water supply valve 22 again
Is opened, and water supply into the washing / dewatering tub 5 is started. The timer 32 measures the time (arrival time T) from when the water level sensor 9 detects the arrival of the washing water to the predetermined lower water level to when it detects the higher predetermined water level (step S23). From the value of the arrival time T, “large”, “medium”, and “small” of the water supply amount are determined according to Table 4 in FIG. 4 (step S24), and then a washing step of step S29 is performed.

[0034] Further, when the cloth content of the laundry is the same as that in which the content of synthetic clothing is included and that in which the content of cotton clothing is included, Is small and the proportion of the cotton clothing is large, the arrival time T is measured in the same manner as in step S23 (steps S25 and S27), and the arrival time T is calculated from the value of the arrival time T in the table in FIG. The water supply amount is determined according to Table 5 or Table 6 (steps S26 and S28).

Thereafter, after water is supplied to a predetermined water level, a washing step (step S29), a drainage step (step S30), and a dehydration step (step S31) are performed in the same manner as steps S7 to S9. After dehydration, a water supply time for supplying a water amount necessary for dehydration and rinsing is determined based on the water supply amounts determined in steps S24, S26, and S28.
The dehydration rinsing is performed in the same manner as described above (Step S3)
2). After the end, a rinsing step (step S33) and a dehydrating step (step S34) are performed in the same manner as steps S11 and S12, and a series of steps is completed.

In this manner, the present embodiment can provide the same effects as those of the first embodiment. Next, a third embodiment of the present invention will be described with reference to flowcharts shown in FIGS. In the present embodiment, in addition to the contents of the first embodiment, the laundry amount is detected and the influence of the laundry amount is taken into consideration. This embodiment is different from the first embodiment only in the control contents, and therefore, the description of the other components is omitted.

In FIG. 5, when the operation is started, first, the load detection circuit 34 detects the amount of laundry. That is, the pulsator 7 is driven by the motor 12 under a predetermined condition for a short time. The drive current of the motor 12 at this time is detected by the load detection circuit 34 (Step S40).
In step S41, the amount of the laundry in the washing and dewatering tub 5 is roughly determined by comparing the result detected in step S40 with a predetermined reference value. It is output in three stages of "small". Then, the water supply amount is determined as follows based on the setting that the arrival time T for the same cloth and the same water supply amount is longer as the laundry amount is smaller according to the amount of the laundry.

First, when the amount of laundry is "large", the water supply and the arrival time T are set in the same manner as in steps S1 and S2.
Is measured (step S42), and then the quality of the laundry is detected (step S43). Step S4
In step 4, in the same manner as in step S3, the cloth quality is determined based on the detection result in step S43, and based on the determined cloth quality, the value of the arrival time T measured in step S42 is used as shown in Table 7 in FIG. The amount of water supply is determined according to (Steps S45 to S47). Thereafter, a washing step (see FIG. 7) in step S60 is performed.

When the amount of laundry is "normal", in FIG. 6, the arrival time T is measured (step S48), the cloth quality of the laundry is detected (step S49), and the cloth quality is determined (step S49). S50) is performed in the same manner as in steps S42 to S44. From the value of the arrival time T measured in step S48 based on the determined cloth, Table 10 in FIG.
The water supply amount is determined according to １２12 (step S51).
~ 53). Thereafter, a washing step (see FIG. 7) in step S60 is performed.

If the amount of laundry is "small", the arrival time T is measured in FIG.
The determination of the fabric quality (steps S54 to S56) is performed in step S4.
This is performed in the same manner as in 2-44. Based on the determined cloth, the amount of water supply is determined from the value of the arrival time T measured in step S54 according to Tables 13 to 15 in FIG. 7 (steps S57 to S59).

Thereafter, the respective steps of washing, drainage, and dehydration (steps S60 to S62) are performed in the same manner as in steps S7 to S12, and the water supply amount is determined based on the water supply amount determined as described above. Water is supplied according to the water supply time of the dehydration rinse, and a dehydration rinse step is performed (step S6).
3). Thereafter, rinsing and dehydration (steps S64, S6)
The operation is completed by performing each step of 5).

As described above, in addition to the effects of the first and second embodiments, the amount of laundry and the quality of the cloth are taken into consideration. The water supply amount can be more accurately estimated without being affected by the laundry amount and the cloth quality. Next, a fourth embodiment of the present invention will be described with reference to flowcharts shown in FIGS. In the third embodiment, the detection of the cloth quality of the laundry is performed after the measurement of the arrival time T at the time of water supply, whereas in the present embodiment, the detection of the arrival time T at the time of water supply is performed. The difference is that it is done before, the other configurations are the same.

In FIG. 8, when the operation is started, the third
The amount of laundry is detected and determined in the same manner as in steps S40 to S41 of the embodiment (steps S70 to S71).
The water supply amount is determined based on the determined amount of laundry in the same manner as in steps S21 to S28 of the second embodiment. That is, when the amount of the laundry is “large”, according to steps S72 to S79 in FIG. 8 and tables 16 to 18 in FIG.
The amount of water supply is determined. When the amount of laundry is "normal", steps S81 to S87 in FIG. 9 and Table 1 in FIG.
The water supply amount is determined according to 9 to 21. When the amount of laundry is "small", the amount of water supply is determined according to steps S88 to S95 in FIG. 10 and Tables 22 to 24 in FIG.

Thereafter, in the same manner as in steps S7 to S12 in FIG. 3, each step from the washing step to the dehydration (step S9)
6 to 101) are performed, and the operation is completed. In this way, the present embodiment also provides the same effects as the third embodiment. In addition, in each Example of this invention, in order to estimate the amount of water supply per unit time as water supply capacity, the arrival time T from a certain lower water level to the upper water level in the washing and dewatering tub 5 at the time of water supply was measured ( For example, step S1) is not limited to this. For example, the amount of change in water level per unit time may be measured, and the present invention is effective when estimating a water supply amount from a change in water level.

Further, in each embodiment of the present invention, the rinsing process has been described in which the dehydration rinsing is performed twice and then the sample rinsing is performed, but the content of the rinsing process is not limited to this. For example, each of the methods described in the section of the prior art may be applied, and the present invention further enhances their effects. Further, in the embodiment of the present invention, the correction based on the detected cloth quality of the water amount of the dehydration rinse is performed by correcting the water supply amount per unit time (for example, steps S4 to S6 in the first embodiment). However, it is not limited to this. For example, taking the first embodiment as an example, in steps S4 to S6, the arrival time T measured in step S1 (corresponding to the above-described water supply amount per unit time),
Based on the fabric detected in step S2, step S
In step 10, the amount of water to be supplied is corrected and determined. Step S1
At 0, the water supply time may be obtained from the corrected water amount and a predetermined water supply amount per unit time, and water may be supplied according to the water supply time.

In addition, various design changes can be made without changing the gist of the present invention.

[0047]

According to the first aspect of the present invention, the following effects can be obtained. That is, since the amount of water required for dehydration rinsing is corrected and determined without being affected by the cloth quality, the amount of water without excess or deficiency is accurately supplied in the dehydration rinsing, so that rinsing can be performed sufficiently and the water supply time can be increased. And no waste of water occurs.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the amount of water required for dehydration and rinsing is corrected without being affected by the amount of laundry in the washing and dewatering tub. By being determined, the amount of water becomes even more accurate.
According to the invention according to claim 3, in addition to the effects of the invention according to claim 1 or 2, the water absorbing ability of the laundry, which varies depending on the cloth quality of the laundry, for example, synthetic fiber, cotton, etc., is detected as a change in water level. Thereby, the cloth quality of the laundry can be detected. In addition, when the water supply capacity is measured via the water level, the influence of the cloth on the water supply capacity is directly measured. Therefore, even when the cloth itself cannot be determined, the water supply capacity can be accurately estimated. .

According to the fourth aspect of the invention, in addition to the effects of the first to third aspects, the water supply capacity can be obtained from the time when water is supplied from the lower water level to the upper water level at the time of water supply. No additional detector is required for measurement
The configuration is simplified.

[Brief description of the drawings]

FIG. 1 is a partially sectional side view of a fully automatic washing machine according to one embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a control unit of the fully automatic washing machine according to one embodiment of the present invention.

FIG. 3 is a flowchart showing an outline of control of the fully automatic washing machine according to one embodiment of the present invention.

FIG. 4 is a flowchart showing an outline of control of a fully automatic washing machine according to a second embodiment of the present invention.

FIG. 5 is a flowchart showing an outline of control of a fully automatic washing machine according to a third embodiment of the present invention.

FIG. 6 is a flowchart continued from FIG. 5;

FIG. 7 is a flowchart continued from FIG. 5;

FIG. 8 is a flowchart showing an outline of control of a fully automatic washing machine according to a fourth embodiment of the present invention.

FIG. 9 is a flowchart continued from FIG. 8;

FIG. 10 is a flowchart continued from FIG. 8;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body 5 Washing dehydration tank 7 Pulsator 9 Water level sensor 12 Motor 22 Water supply valve 31 Microcomputer 34 Load detection circuit 35 Cloth detection circuit 21,22,37 Water supply means Step S2,21,43,49,55,72,81, 89 Cloth detection means Steps S40,70 Laundry amount detection means Steps S1,23,25,27,42,48,54,74,76,78,82,84,86,90,
92,94 Water supply capacity measuring means Step S4 ~ 6,10,24,26,28,32,45 ~ 47,51 ~ 53,57 ~
59,63,75,77,79,83,85,87,91,93,95,99 Water amount determination means Step S10,32,63,99 Water supply control means

Claims (4)

(57) [Claims] 1. After water is contained in laundry in a washing dehydration tub,
In a fully automatic washing machine that performs dehydration rinsing for dehydrating laundry, a cloth quality detecting means for detecting the quality of the laundry in the laundry dehydration tub, a water supply means for supplying water to the laundry dehydration tub, and a When water is supplied from the water supply means into the washing dehydration tub, the water supply capacity measurement means for measuring the water supply capacity, and based on the output signals of the water supply capacity measurement means and the cloth quality detection means,
Water amount determining means for determining the amount of water required for dehydration rinsing, and water supply for controlling the water supply time of the water supply means in the dehydration rinsing so that the amount of water determined by the water amount determining means is supplied into the washing and dewatering tub. A fully automatic washing machine comprising a control means. 2. The fully automatic washing machine according to claim 1, further comprising: a laundry amount detecting unit configured to detect a laundry amount in the washing and dewatering tub, wherein the water amount determining unit includes a water supply capacity measuring unit and a cloth quality detecting unit. A fully automatic washing machine characterized in that a water amount is determined based on an output signal of a laundry amount detecting means in addition to an output signal. 3. The fully automatic washing machine according to claim 1, wherein said cloth quality detecting means is configured to supply water to a predetermined water level in the washing / dehydrating tub in which the laundry is placed. A fully automatic washing machine characterized by detecting a falling water level when is stirred for a predetermined time, and detecting cloth quality based on the water level reduction amount. 4. The fully automatic washing machine according to claim 1, wherein said water supply capacity measuring means comprises:
A fully automatic washing machine characterized by detecting a time when a accumulated water level of a washing water changes from a predetermined lower water level to a higher water level.