JPH09239187A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To raise the level of accuracy for judging cloth quality. SOLUTION: A control circuit 15 supplies and interrupts power to a motor 5 according to the prescribed pattern, with no water contained in a spinning tub, and the characteristic data of a load acting on the motor 5 is thereby obtained. The control circuit 15, then, sets a waver level for cloth quality judgement on the basis of the characteristic data. Furthermore, the control circuit 15 supplies and interrupts power to the motor 5 according to the prescribed pattern, with water contained in the spinning tub up to the established level, and judges the quality of the laundry on the basis of the characteristic data so obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine provided with a cloth quality judging means.

[0002]

Conventionally, in a washing machine, an agitator is provided in a tub, and the agitator is rotationally driven by a motor to perform washing. In recent years, there has been provided one in which the quality of laundry is judged and the strength of the water flow at the time of washing is set based on the judgment result. In this case, the cloth quality judgment method is as follows.

That is, a certain amount of water is supplied while the laundry is stored in the tub, the motor is electrically disconnected for a predetermined number of times, and the agitator is intermittently rotated for a predetermined number of times. Then, the rotation speed of the motor at each rotation is detected, the difference between the rotation speeds of the previous time and this time is calculated as an absolute value, and the calculated value of each time is integrated. The larger the integrated value is, the cloth quality is "stiff". It is determined to be “standard” and “supple” as it becomes smaller. In other words, if the cloth quality is stiff, the laundry may come into strong contact with the agitator or not so much, and the rotation of the agitator and therefore the rotation speed of the motor may be low or high at each energization. This increases the integrated value. On the contrary, when the cloth quality is supple, the laundry does not come into contact with the agitator so strongly that the rotation speed of the motor tends to be almost constant at all times, and the integrated value becomes small.

However, in the cloth quality detection method described above, it is the actual situation that the determination accuracy is still unsatisfactory. Especially, in recent washing machines, the accuracy of various controls has been improved by employing a microcomputer and various sensors. And
Along with this, there is a demand for further improvement in cloth quality determination accuracy.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a washing machine capable of improving the accuracy of cloth quality determination.

[0006]

According to the present invention, a stirrer is provided in a tub, and the stirrer is rotationally driven by a motor to perform washing, and the load characteristic applied to the motor is detected. Characteristic detecting means, primary data sampling means for driving the motor in a state where water is not stored in the tank, and at this time detecting characteristic of load by the characteristic detecting means to obtain characteristic data, and the primary data sampling means After supplying water to the cloth quality determination water level setting means for setting the cloth quality determination water level based on the characteristic data obtained by, and the cloth quality determination water level set by this cloth quality determination water level setting means, A secondary data sampling means for driving the motor, and at this time detecting characteristic of load by the characteristic detecting means to obtain characteristic data, and the secondary data sampling means. Configured to include a fabric quality determining means for determining fabric quality of the laundry based on the obtained characteristic data Ri.

In this structure, the primary data sampling means for obtaining the characteristic data by driving the motor in a state where water is not stored in the tank is controlled, and the cloth quality determination water level is set based on the characteristic data. . Then, water is poured into the tub up to this set water level, the motor is driven in this state, and control by the secondary data sampling means for obtaining characteristic data is executed, and the cloth quality of the laundry is judged based on this characteristic data. . As a result, the cloth quality determination accuracy is improved.

That is, the inventor conducted experiments and investigations to improve the determination of cloth quality, and found the following to be effective. With regard to the determination of the cloth quality, it is predicted that the cloth quality can be determined with high accuracy if the amount of laundry is known. To determine the amount of laundry, it is preferable to drive the motor in a state where water is not stored in the tub, detect the load characteristics of the motor to obtain characteristic data, and then determine the amount of laundry based on the characteristic data. . On the other hand, as a cloth quality judgment method, a certain amount of water is stored in the tank, the motor is driven in this state, the load characteristics of the motor are detected to obtain characteristic data, and the cloth quality is judged from this characteristic data. It is effective to do. However, it has been found that even if the above characteristic data is obtained in the state where a uniquely set amount of water is stored, the accuracy cannot be significantly improved.

Therefore, in the above structure, the motor is driven in a state where water is not accumulated in the tank, and at this time, the primary data sampling means for detecting the load characteristic by the characteristic detecting means to obtain characteristic data is executed. By doing so, it is possible to obtain the characteristic data in which the amount of laundry is reflected, and the water level for determining the cloth quality is set based on the characteristic data obtained by the primary data sampling means. The judgment water level can be set.

After the water is supplied to reach the set cloth quality determination water level, the motor is driven, and at this time, the characteristic detecting means detects the load characteristic to obtain characteristic data by the secondary data sampling means. Since the control is executed and the cloth quality of the laundry is judged based on the characteristic data obtained by the secondary data sampling means, the accuracy of the cloth quality judgment becomes extremely high.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. First, in FIG. 2 showing the overall configuration of a fully automatic washing machine, a water receiving tub 2 is elastically supported in a swingable manner inside an outer box 1. Inside the water receiving tank 2, there is provided a rotating tank 3 which also serves as a washing tank and a dehydrating tank, and an agitator 4 is provided at an inner bottom portion of the rotating tank 3. Also, on the outer bottom of the water receiving tank 2,
A motor 5 and a drive mechanism section 6 for washing and dehydrating operation are provided, and the rotational force of the motor 5 is transmitted to the drive mechanism section 6 via a belt transmission mechanism 7.

The motor 5 is composed of, for example, a capacitor induction motor, and is a motor capable of rotating in the forward and reverse directions. Further, the drive mechanism unit 6 is configured by incorporating a gear reduction device, a clutch mechanism, a brake device, etc., and decelerates the rotational force of the motor 5 only to the stirring body 4 at the time of washing and rinsing. In addition, during dewatering, it is transmitted to the rotary tank 3 and the stirring body 4 to rotate them both at high speed integrally.

A drainage valve 8 for opening and closing the drainage port 8 is provided at the drainage port 8 formed at the bottom of the water receiving tank 2. An air trap 10 is provided adjacent to the drain port 8, and a water level sensor 11 (see FIG. 1) is connected to the air trap 10 via an air tube 12. The water level sensor 11 is composed of, for example, a pressure sensor, and is configured to output a water level detection signal corresponding to the pressure in the air trap 10, that is, the water level in the water receiving tank 2 (rotating tank 3). The water level sensor 11 is arranged in a rear portion of an upper cover 13 mounted on the upper portion of the outer box 1. A water supply valve 14 (see FIG. 1) for supplying water into the rotary tank 3 is provided at a rear portion of the upper cover 13.

On the other hand, in FIG. 1 showing the electrical configuration, the control circuit 15 is configured to include a microcomputer, and various washing courses including a washing process, a rinsing process and a dehydrating process are automatically stored in an internal memory. A control program for controlling execution is stored. This control circuit 15
However, it has each function as a primary data sampling means, a secondary data sampling means, a cloth quality determination water level setting means, and a cloth quality determination means. The control circuit 15 is configured to receive a water level detection signal from the water level sensor 11 and various key signals from an operation circuit 16 including various operation keys provided on the operation panel. In addition, the control circuit 15 drives and controls a display circuit 17 including various indicators provided on the operation panel, and drives and controls the water supply valve 14, the drain valve 9, and the motor 5 via a drive circuit 18. It is configured to do.

In the present embodiment, the characteristic detecting means 19 for detecting the load characteristic applied to the motor 5, for example, the rotation characteristic, detects the voltage (level) between the terminals of the operating capacitor of the motor 5 and detects this voltage. The signal is provided to the first reference value comparison unit 20 and the second reference value comparison unit 21 as the rotation characteristic detection signal Sa.

The first reference value comparing section 20 receives the rotation characteristic detection signal Sa from the characteristic detecting means 19,
This rotation characteristic detection signal Sa is compared with a first reference value V1 (e.g., 175V equivalent), and when the rotation characteristic detection signal Sa rises to the first reference value V1, a detection signal (for example, a high level signal) SH Is provided to the control circuit 15. Then, the second reference value comparison unit 21
Receives the rotation characteristic detection signal Sa from the characteristic detecting means 19 and receives the rotation characteristic detection signal Sa and the second reference value V2.
(E.g., 10 V equivalent) to compare the rotation characteristic detection signal S
When a is reduced to the second reference value V2, a detection signal (for example, a high level signal) SL is provided to the control circuit 15. Further, the control circuit 15 controls the first reference value V1 stored in the first reference value comparison unit 20.
The value can be corrected.

Now, the control content related to the cloth quality judgment of the control circuit 15 will be described with reference to FIG. In FIG. 6, for example, the content of the control program for the automatic driving course is shown. This program starts when the automatic driving course is selected and a start key (not shown) is operated. In this case, the laundry to be washed is previously stored in the rotary tub 3.

First, in step S1, control as primary data sampling means is executed. The contents of this execution are as follows. That is, as shown in FIG. 3, the motor 5 is driven in the forward rotation direction in a predetermined power interruption pattern to perform sampling operation. At this time, the characteristic detecting means 19
The rotation characteristic detection signal Sa corresponding to the voltage between the capacitor terminals of the motor 5 is output to the first reference value comparison unit 20 and the second reference value comparison unit 21. As the rotation speed of the motor 5 increases, the voltage level of the rotation characteristic detection signal Sa also increases.

When the voltage level of the rotation characteristic detection signal Sa rises to 175V which is the first reference value, the first
The reference value comparison unit 20 outputs the high-level detection signal SH. The control circuit 15 is in the energized state for a predetermined energization delay period Tt (for example, 0.8 seconds) from the time when the detection signal SH is given (time t1 in FIG. 3), and the power is cut off at the time when this time Tt elapses ( Time point t2 in FIG. 3), this power failure time point T2
Therefore, the power disconnection state is maintained for the predetermined power disconnection period Td (for example, 1.0 second). During this power-off state, the motor 5 has a reduced rotation speed and stops.

When the predetermined power-off period Td has elapsed (time t3), the motor 5 is energized again, but at this time, it is energized in the reverse rotation direction. This cycle of forward and reverse rotation is 3
Execute the cycle.

Here, the motor 5 is cut off (period T
d) In the process of decreasing the rotation speed, the second reference value comparison unit 21 detects that the voltage level of the rotation characteristic detection signal Sa has decreased to a value corresponding to 10V which is the second reference value, and outputs the detection signal SL. Output. When this detection signal SL is given, the control circuit 15 starts counting the time for the data time K, and when the voltage level of the rotation characteristic detection signal Sa rises to 175V by the next energization of the motor 5, this data time K Stop time counting for K.
In this way, the data time K is sequentially counted while the motor 5 is rotated in the forward and reverse directions. Then, excluding the first data time K, the second and subsequent data times K are integrated. The integrated value Ka is given in hexadecimal. The larger the integrated value Ka which is the characteristic data, the larger the amount of laundry (see FIG. 4). It should be noted that the reason for excluding the first data time K is that the first motor 5 is started and the laundry is excessively biased, so that the unstable element is large and it is difficult to use as data.

Next, in step S2, the amount of laundry is determined. That is, the integrated value Ka is compared with the reference value Q1 (for example, "699" in hexadecimal, see FIG. 4) and Q2 ("6A2" in hexadecimal notation) for determining the laundry amount, and when the integrated value Ka is equal to or less than the reference value Q1. For example, the laundry amount is "1.5 kg
If the integrated value Ka exceeds the reference value Q1 and is equal to or less than the reference value Q2, "more than 1.5 kg to 2.5 kg or less" is determined.
When the integrated value Ka exceeds the reference value Q2, it is determined to be “more than 2.5 kg”. 4 and 5
“□” indicates laundry with a so-called “stiff” cloth quality, “○” indicates laundry with a “standard” cloth quality, and “△” indicates laundry with a so-called “supple” cloth quality. Is shown.

Further, in the next step S3, the laundry amount "1.5 kg or less" or "1.5 k" determined above is determined.
The water level at the time of washing (detergent washing and rinsing) is set to "low", "medium", and "high" according to "above g to 2.5 kg or less" and "over 2.5 kg".

In the next step S4, the cloth quality determination water level is set to one of Ha, Hb, and Hc based on the integrated value Ka. That is, the reference value for setting the water level in this case is the same as the reference values Q1 and Q2 for determining the laundry amount described above. Therefore, when the integrated value Ka is equal to or less than the reference value Q1, the water level for determining the cloth quality is Ha ( (See FIG. 3), and when the integrated value Ka exceeds the reference value Q1 and is equal to or less than the reference value Q2,
The water level for cloth quality determination is set to Hb, and the integrated value Ka is the reference value Q.
When it exceeds 2, the water level for cloth quality determination is set to Hc. The water level for each cloth quality judgment is, for example, about 2 times the water level at the time of washing.
The water level is about 0%.

In step S5, water is supplied up to the set cloth quality determination water level. In the next step S6, secondary data sampling control is executed. This is almost the same as the primary data sampling executed in step S2, but the forward / reverse operation of the motor 5 is executed for 5 cycles instead of 3 cycles, and the first data time K is excluded and the second and subsequent data times are excluded. Accumulate K. In this case, the integrated value is K
b.

In this case, according to an experiment conducted by the present inventor, the relationship between the integrated value Kb, the amount of laundry and the cloth quality is as shown in FIG. For example, looking at the case where the amount of laundry is "1.5 kg or less", it can be seen that the integrated value Kb increases as the cloth quality changes from "supple" to "rough". This can also be said when the laundry amount is “more than 1.5 kg to 2.5 kg or less” or “more than 2.5 kg”.
However, it can be seen that the degree of distribution is gradually increasing.

[0027]

[Table 1]

In step S7, the cloth quality is judged by the ranking shown in Table 1 and FIG. That is, the control circuit 15 determines the first reference value (for example, 1
Hexadecimal number “A20”), second reference value (eg hexadecimal number “A70”), third reference value (eg hexadecimal number “A5”)
1 ”), a fourth reference value (eg, hexadecimal number“ AD0 ”),
A fifth reference value (for example, hexadecimal number "A90") and a sixth reference value (for example, hexadecimal number "BA0") are provided in advance.

The first reference value (hexadecimal "A20") and the second reference value (hexadecimal "A70") are used when the amount of laundry is "1.5 kg or less",
If the integrated value Kb is less than or equal to the first reference value, "flexible"
If the value exceeds the first reference value and is equal to or less than the second reference value, it is “standard”, and if the value exceeds the second reference value, it is “wow”.
Is determined.

The third reference value (hexadecimal "A51") and the fourth reference value (hexadecimal "AD0") are used when the amount of laundry is "more than 1.5 kg to 2.5 kg or less". Yes, if the integrated value Kb is less than or equal to the third reference value, it is determined as “flexible”, and if the value exceeds the third reference value to the fourth reference value or less, the value is “standard”, and exceeds the fourth reference value. If there is, it is determined to be "wow".

The fifth reference value (hexadecimal number "A90") and the sixth reference value (hexadecimal number "BA0") are used when the laundry amount is "more than 2.5", and the integrated value Kb. Is judged to be "supple" if it is less than or equal to the fifth reference value, "standard" if it exceeds the fifth reference value to less than the sixth reference value, and "stiff" if it exceeds the sixth reference value. It is determined that

Here, the cloth quality "rough" means that the cloth of the cloth has a relatively high water absorption property such as cotton, and the weave thereof is also relatively strong and thick, and the cloth quality "supple" is a water absorption property. Low quality, for example, synthetic fiber, etc., and the cloth quality “standard” refers to laundry in which other cotton laundry and relatively thick synthetic fiber laundry are mixed. In this case, the more stiff the cloth is, the more water is absorbed and the greater the rotational resistance of the stirring body 4.

In step S8, for example, the water flow strength at the time of washing is set based on the determined cloth quality. For example, when the judged cloth quality is "supple", the water flow strength is weakened, the water quality strength is medium for the cloth quality "standard" and strong for the cloth texture "rough".

According to the present embodiment as described above, in a state where water is not stored in the rotary tank 3, the motor 5 is driven to be turned on and off in a predetermined pattern to execute the primary data sampling control. Since the rotation characteristic which is the load characteristic related to 5 is detected to obtain the integrated value Ka which is the characteristic data, the laundry amount can be satisfactorily determined by the integrated value Ka. Then, by setting the cloth quality judgment water level based on the integrated value Ka, the cloth quality judgment water level in consideration of the amount of laundry can be obtained, and the water is rotated in the rotary tank so as to reach this cloth quality judgment water level. In the state in which water is supplied to the inside of the motor 3, the motor 5 is energized and disconnected in a predetermined pattern to execute the secondary data sampling control, and at this time, the rotation characteristic which is the load characteristic applied to the motor 5 is detected to obtain the characteristic data. Since the integrated value Kb is obtained and the cloth quality is determined based on the integrated value Kb, high cloth quality determination accuracy can be obtained.

That is, FIG. 7 shows a reference example, and in the case where the above-mentioned integrated value Kb is obtained in a state where water having a constant water level is uniquely stored, the relationship between this integrated value Kb, the amount of laundry and the cloth quality. Is shown. As can be seen from a comparison between FIG. 7 and FIG. 5 of the present embodiment, in the case of FIG.
More than 2.5 g and less than 2.5 kg "
The division levels of “(indicated by □)”, “standard” (indicated by ◯) and “flexible” (indicated by Δ) are unclear. For example, the first reference value is the hexadecimal number “A20”, and the second reference value is The value is hexadecimal "A40" and the third reference value is hexadecimal "A8".
0 ", the fourth reference value is the hexadecimal number" AB0 ", the fifth reference value is the hexadecimal number" A84 ", and the sixth reference value is the hexadecimal number" A0 ".
When "D0" is set, the cloth quality determination accuracy is 66 to 80%.

On the other hand, according to this embodiment, as can be seen from Table 1 and FIG.
The classification levels of "standard" and "supple" are clear, and the cloth quality determination accuracy is almost 100%.

In particular, according to this embodiment, the number of times the motor 5 is turned on and off in the primary data sampling control for setting the water level for determining the cloth quality is set to 3 cycles, and the motor 5 is turned on and off in the secondary data sampling control. Since the number of times of interruption / interruption in the latter sampling was increased by setting the number of cycles to 5 cycles, as can be seen from Table 2, the accuracy of cloth quality determination could be increased. That is, in the case where the number of times the motor 5 is turned on and off in the primary data sampling control is 3 cycles and the number of times the motor 5 is turned on and off in the secondary data sampling control is also 3 cycles, the cloth quality determination accuracy is about 63%. is there. However, even 63% is superior to the conventional one, and the intended purpose of the present invention can be achieved.

[0038]

[Table 2]

Next, FIGS. 8 and 9 show a second embodiment of the present invention. In the second embodiment, the first point is that the control circuit 15 has a function as a washing water level changing means. Is different from the embodiment described above. That is, in step G3, as in step S3 of FIG. 6 in the first embodiment, according to the laundry amount “1.5 kg or less”, “greater than 1.5 kg to 2.5 kg or less”, or “greater than 2.5 kg”. Set the water level at the time of washing to "Low", "Medium", and "High" as shown in Fig. 3.
In No. 8, the water level at the time of washing is changed according to the judged cloth quality. That is, as can be understood from Table 3, when the determined cloth quality is “standard”, the wash water level set in step G3 is not changed, but when the cloth quality is “stiff”, at this point Water level slightly higher than the set wash water level (either "Low", "Medium" or "High") (Water level "Low A", "Medium A" or "High A" shown in Fig. 9) If the cloth quality is "supple", the washing water level set at this point ("low",
Change to a water level slightly lower than "medium" or "high" (any of water levels "low B", "medium B", and "high B" shown in FIG. 9).

[0040]

[Table 3] According to the second embodiment, the washing water level can be changed according to the cloth quality, and as can be seen from Table 3, improvement of the washing effect can be expected.

It should be noted that, with respect to the number of interruptions of the motor 5 in the primary data sampling control performed for setting the water level for cloth quality determination, the interruption of the motor 5 in the secondary data sampling control performed for cloth quality determination. The number of times may be changed according to the characteristic data (amount of laundry) in the primary data sampling control. For example, when the number of interruptions of the motor 5 in the primary data sampling control for setting the water level for cloth quality determination is 5 cycles, the interruption of the motor 5 in the secondary data sampling control for cloth quality determination is performed. The frequency is as shown in Table 4 below.
For example, 6 cycles may be set only when the laundry amount is “more than 2.5 kg”. In this case, if the amount of laundry is "2.5 kg or less", the number of times the motor 5 is turned on and off in each data sampling control is 5 cycles. Even in this case, it is possible to contribute to the improvement of the cloth quality determination accuracy.

[0042]

[Table 4]

10 and 11 show the third embodiment of the present invention.
10 is shown, and the cloth quality determination method in step P7 of FIG. 10 is slightly different. That is, this step P
In step 7, from the integrated value Kb obtained in step P6 to step P
The integrated value Ka obtained in 1 is subtracted, and the cloth quality is determined from the value Kb-Ka so that it can be understood from FIG. In this case, as can be seen from Table 5, the first reference value (for example, 1
Hexadecimal number “387”), second reference value (eg hexadecimal number “3ED”), third reference value (eg hexadecimal number “3B”)
0 "), a fourth reference value (eg, hexadecimal number" 437 "),
The cloth quality is determined based on the fifth reference value (eg, hexadecimal number “3F0”) and the sixth reference value (eg, hexadecimal number “46E”). Even in this case, it is possible to improve the cloth quality determination accuracy.

[0044]

[Table 5]

The present invention is not limited to the above-described embodiments, and in detecting the load characteristic applied to the motor, instead of detecting the voltage across the terminals of the capacitor, the winding voltage of the motor 5 is detected. The motor current (load current), the rotation speed, the rotation torque, or the like may be detected.

[0046]

As apparent from the above description, the present invention has the following effects. According to the invention of claim 1, the characteristic data of the load applied to the motor is obtained by executing the control by the primary data sampling means in a state where the water is not stored in the tank, and based on the characteristic data, the water level for cloth quality determination is obtained. Was set, and the control by the secondary data sampling means was executed in a state where the water of the cloth quality determination water level was stored, and the cloth quality of the laundry was judged based on the characteristic data obtained at this time. Therefore, it is possible to improve the cloth quality determination accuracy.

According to the second aspect of the present invention, the motor is composed of a capacitor induction motor, and the characteristic detecting means detects the voltage across the capacitor terminals of the motor. It is possible to satisfactorily detect with a relatively simple configuration, which can further contribute to the improvement of the cloth quality determination accuracy.

According to the third aspect of the present invention, the number of times the motor is turned on and off by the secondary data sampling means is increased relative to the number of times the motor is turned on and off by the primary data sampling means. Can further contribute to the improvement of

According to the fourth aspect of the present invention, the motor cutoff time in the secondary data sampling means is changed based on the characteristic data obtained by the primary data sampling means. It can further contribute to improvement. According to the invention of claim 5, since the washing water level changing means for changing the water level at the time of washing based on the cloth quality judging result by the cloth quality judging means is provided, it is expected that the cleaning effect is improved.

[Brief description of drawings]

FIG. 1 is a block diagram of an electrical configuration showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the washing machine.

FIG. 3 is a diagram showing a motor disconnection pattern.

FIG. 4 is a diagram showing a data state when primary data sampling control is performed.

FIG. 5 is a diagram showing a data situation when secondary data sampling control is performed.

FIG. 6 is a diagram showing control contents

FIG. 7 is a diagram showing a reference example.

FIG. 8 is a flowchart of control contents showing a second embodiment of the present invention.

FIG. 9 is a vertical sectional side view of the washing machine for indicating each water level.

FIG. 10 is a flowchart of control contents showing a third embodiment of the present invention.

FIG. 11 is a diagram showing a data state when a difference between data obtained by the primary data sampling control and data obtained by the secondary data sampling control is obtained.

[Explanation of symbols]

3 is a rotary tank (tank), 4 is a stirrer, 5 is a motor, 15 is a control circuit (primary data sampling means, secondary data sampling means, cloth quality judgment water level setting means and cloth quality judging means), 19 is a characteristic Detecting means, 20 is a first reference value comparing section, and 21 is a second reference value comparing section.

Claims (5)

[Claims] 1. A tank equipped with an agitator, wherein the agitator is rotationally driven by a motor to perform washing, and a characteristic detecting unit for detecting a load characteristic applied to the motor; Based on the characteristic data obtained by the primary data sampling means for driving the motor in a state in which water is not stored in the device, and at this time detecting the load characteristic by the characteristic detecting means to obtain characteristic data, Cloth quality judgment water level setting means for setting the cloth quality judgment water level, and after supplying water to the cloth quality judgment water level set by the cloth quality judgment water level setting means, drive the motor,
At this time, a secondary data sampling means for detecting the load characteristic by the characteristic detecting means to obtain characteristic data, and a cloth quality judgment for judging the cloth quality of the laundry based on the characteristic data obtained by the secondary data sampling means A washing machine comprising means. 2. The washing machine according to claim 1, wherein the motor comprises a capacitor induction motor, and the characteristic detecting means is adapted to detect a voltage between the capacitor terminals of the motor. 3. The motor in each data sampling means is turned on and off, and the number of times the motor is turned on and off by the secondary data sampling means is larger than the number of times the motor is turned on and off by the primary data sampling means. The washing machine according to claim 1, wherein the washing machine is used. 4. The washing machine according to claim 3, wherein the interruption time of the motor in the secondary data sampling means is changed based on the characteristic data obtained by the primary data sampling means. 5. The washing machine according to claim 1, further comprising washing water level changing means for changing the water level at the time of washing based on the result of the cloth quality judgment by the cloth quality judging means.