JPH05237286A - Control device for washing machine - Google Patents

Abstract

PURPOSE:To provide a control device for a washing machine for washing garments by automatically setting washing conditions such as an optimum water level, a power of water stream, a time and the like in accordance with a kind of a garment (which will be hereinbelow denoted as 'a cloth kind'). CONSTITUTION:A water level detecting part 3 detects a variation in a water level which occurs in a washing/spinning basket 6 during agitation for washing, and delivers the variation to a control circuit 4 which reads input a waveform at every predetermined time and which calculates an unevenness among peak values in variations of the water level in a predetermined time so as to set washing conditions such as a water level, a water stream and a washing time in accordance with the calculated value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to wash clothes by automatically setting optimum washing conditions such as optimum water level, water flow intensity and time according to the type of clothes (hereinafter referred to as cloth type). The present invention relates to a machine control device.

[0002]

2. Description of the Related Art Conventionally, a cloth type detecting device for a washing machine for detecting a cloth type calculates a degree of change in water level due to a stirring operation during washing, and uses this value and a predetermined value determined in advance according to the cloth type. There is one that determines the cloth type by comparing.

[0003]

However, in the above-mentioned prior art, it cannot be said that the calculated value of the degree of change in water level sufficiently reflects the cloth type, and high detection accuracy cannot be obtained. .. Therefore, it is difficult to accurately set the optimum washing conditions such as the water level, the strength of the water flow, and the washing time according to the type of clothes to be washed, depending on the type of clothes put in the washing / dehydrating tank. ..

The present invention has been made to solve the above-mentioned problems, and is for a washing machine that detects the cloth type with high accuracy and sets the washing conditions such as the optimum water level, water flow intensity and washing time suitable for the cloth type. An object is to provide a control device.

[0005]

To solve the above problems, a first invention is to provide a motor for driving a washing / dehydrating tub and a stirring blade, and a water supply device for supplying water to the washing / dehydrating tub.
It has a water level detection unit for detecting the water level in the washing / dehydrating tub, and a control circuit unit for controlling the energization of the motor and the opening / closing control of the water supply device. The control circuit unit is agitated by the water level detection unit. Read the detection output inside every predetermined time,
The washing machine control device calculates a peak value variation of a detection output value within a predetermined period and sets washing conditions such as a water level, a water flow, and a washing time according to the calculated value.

A second invention is a motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, and a water level detector for detecting a water level in the washing / dehydrating tub. And a control circuit section for controlling energization of the motor and opening / closing control of the water supply device.
The detection output during stirring is read at a predetermined time from the water level detection unit, the degree of accelerating change in the detection output value within a predetermined period is calculated, and the water level, water flow, washing time, etc. are washed according to the calculated value. It is a control device for a washing machine that sets conditions.

A third aspect of the invention is a motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, and a water level detector for detecting the water level in the washing / dehydrating tub. And a control circuit section for controlling energization of the motor and opening / closing control of the water supply device.
The detection output during stirring from the water level detection unit is read every predetermined time, and the degree of acceleration change of the detection output value and the peak value variation of the detection output value within a predetermined period are calculated,
The washing machine control device sets washing conditions such as water level, water flow, and washing time according to the calculated values.

A fourth invention is a motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, and a water level detector for detecting the water level in the washing / dehydrating tub. And a control circuit section for controlling energization of the motor and opening / closing control of the water supply device.
The detection output during stirring is read from the water level detection unit at predetermined time intervals, the degree of acceleration change in the detection output value within a predetermined period and the difference between the maximum value and the minimum value of the detection output value are calculated, and the calculated value is calculated. The washing machine control device sets the washing conditions such as water level, water flow, and washing time according to the above.

A fifth aspect of the invention is a motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, and a water level detector for detecting the water level in the washing / dehydrating tub. And a control circuit section for controlling energization of the motor and opening / closing control of the water supply device.
The detection output during stirring from the water level detection unit is read at every predetermined time, and the acceleration change degree of the detection output value within a predetermined period and the deviation of the acceleration change degree are calculated,
The washing machine control device sets washing conditions such as water level, water flow, and washing time according to the calculated values.

[0010]

According to the first aspect of the present invention, with the above-mentioned configuration, the water level fluctuation in the washing / dehydrating tub during washing and stirring is detected by the water level detection unit, and the cloth type is detected by the peak value fluctuation of the water level fluctuation within a predetermined period. By doing so, it is possible to detect the type of cloth with high accuracy, and it is possible to set the optimum washing conditions such as water level, water flow, and washing time according to the type of cloth.

According to the second aspect of the present invention, with the above-mentioned structure, the water level fluctuation in the washing / dehydrating tub during washing and agitation is detected by the water level detecting section, and the cloth type is detected by the accelerating change level of the water level fluctuation within a predetermined period. By doing so, the detection accuracy can be further improved, and optimum washing conditions such as water level, water flow, and washing time can be set according to the type of cloth.

According to a third aspect of the present invention, the water level fluctuation in the washing / dehydrating tub during washing and stirring is detected by the water level detection unit, and the acceleration level of the water level fluctuation and the peak of the water level fluctuation within a predetermined period are detected. By detecting the cloth type by combining the value variations, the cloth type can be detected more accurately, and the optimum washing conditions such as water level, water flow, and washing time can be set according to the cloth type.

According to a fourth aspect of the present invention, with the above configuration, the water level fluctuation in the washing / dehydrating tub during washing and agitation is detected by the water level detection unit, and the acceleration level of the water level fluctuation within a predetermined period and the maximum water level fluctuation. By detecting the cloth type by combining the displacement (difference between the peak value generated when the motor is on and the peak value generated when the motor is off), the cloth type can be detected accurately, and the optimum water level, water flow, and washing time according to the cloth type can be detected. It is possible to set washing conditions such as.

According to a fifth aspect of the present invention, with the above configuration, the water level fluctuation in the washing / dehydrating tub during washing and stirring is detected by the water level detection unit, and the acceleration level of the water level fluctuation within a predetermined period and its acceleration. By detecting the cloth type by combining the deviations of the degree of change, the cloth type can be detected, and the optimum washing conditions such as the water level, the water flow, and the washing time can be set according to the cloth type.

[0015]

【Example】

(Embodiment 1) An embodiment of the first invention will be described below with reference to the drawings. In FIG. 1, 1 is a stirring blade 8
And a motor for selectively driving the washing / dehydrating tub 6, 2 is a water supply device for supplying water to the washing / dehydrating tub 6, 3 is a water level detection unit for detecting the water level in the washing / dehydrating tub 6, and 4 is a water level detection It is a control circuit unit that controls energization of the motor 1 and opening / closing control of the water supply device 2 according to the water level detected by the unit 3. 5 is an outer tub located outside the washing / dehydrating tub 6, 7 is laundry loaded in the washing / dehydrating pail 6, 9 is an air trap provided at the bottom of the outer tub 5, and in this air trap, Washing and dehydration tank 6
Pressure is generated according to the water level inside. 10 is an air trap 9
It is an air hose that transmits the internal pressure to the water level detection unit 3.
The water level detector 3 includes an air trap 9 and an air hose 1.
The pressure corresponding to the water level in the washing / dehydrating tub 6 generated via 0 is converted into a frequency and output.

The operation of the washing machine control device configured as described above will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, while the stirring blade 8 is not rotated, the water surface in the washing and dewatering tank 6 of the washing machine is horizontal as shown by the broken line X, but when it is rotated, it is as shown by the alternate long and short dash line Y. It has a mortar shape inside. At this time, a pumping action as indicated by the arrow is generated, and the water level between the outer tub 5 and the washing / dehydrating tub 6 is lowered as indicated by the alternate long and short dash line Yg. At this time, the air trap 13
The internal pressure indicates the pressure between the outer tub 5 and the washing / dehydrating tub 6, and the water level in the air trap 9 is also changed from the broken line Xt to the alternate long and short dash line Y.
Since the pressure decreases to t, the pressure in the air trap 9 decreases when the stirring blade 8 rotates, and when the rotation stops, the water level tries to return to the horizontal plane as indicated by the broken line X, and the pressure increases. The pressure in the air trap 9 is the same as that of the air hose 10
Is input to the water level detection unit 3 via. In the water level detector 3, the higher the input pressure, the lower the frequency,
The lower the pressure is, the higher the frequency is converted, and the converted frequency is output to the control circuit unit 4.

Here, the relationship between agitation (motor 1 on) and stop (motor 1 off) during washing agitation and frequency is shown in FIG.
As shown in (a). That is, when washing is started and the laundry 7 is stirred by the rotation of the stirring blade 8 by the motor 1, the water level in the outer tub 5 rises, the pressure in the air trap 9 falls, and the frequency starts to rise. On the contrary to the maximum value fmax, when the rotation of the stirring blade 8 by the motor 1 is stopped and the stirring of the laundry 7 is stopped, the water level in the outer tub 5 is lowered, the pressure in the air trap 9 is raised, and the frequency is lowered. Then, the minimum frequency fmin is reached. The waveform shown in FIG. 2A is repeatedly input to the control circuit unit 4 during washing and stirring. The control circuit unit 4 reads the input waveform every predetermined time and extracts fmax for each cycle. The degree of variation of fmax (corresponding to the standard deviation by statistics) within a predetermined cycle period in a predetermined cycle period from the start of washing (for example, the third to tenth cycles from the start of washing) is calculated.

Next, the relationship between the variation degree of fmax and the cloth type will be described. FIG. 3 shows the degree of fmax variation for a specific water level and the same cloth amount. The range of the arrow in FIG. 3 is fm for each fabric type.
This shows the variation range of the variation degree of ax, and the actual fmax variation degree exists in this variation range. Further, A in FIG. 3 is a threshold value set in order to discriminate between delicate cloth such as lingerie and rugged cloth such as towel. In this embodiment, the type of cloth is discriminated by paying attention to the relationship between the degree of fluctuation of the water level fluctuation peak value and the type of cloth that occur when the laundry 7 is agitated by the rotation of the stirring blade 8 by the motor 1 after the laundry is started. Is. That is, when the variation degree of fmax is larger than the threshold value, it is determined that the laundry 7 is a kind of cloth such as a towel, and the water flow is controlled to be strengthened. When the variation degree of fmax is equal to or smaller than the threshold value, it is determined that the laundry 7 is a delicate cloth such as lingerie, and the water flow is weakened or the water level is increased.

In this embodiment, paying attention to the relationship between the degree of fluctuation of the water level fluctuation peak value generated when the laundry 7 is agitated by the rotation of the stirring blade 8 by the motor 1 and the cloth type,
The type of cloth is determined.

(Embodiment 2) An embodiment of the second invention will be described below with reference to FIGS. 1, 2 and 4. The configuration of this embodiment is similar to that of FIG. The input to the control circuit unit 4 is the same as that in the first embodiment, but the difference from the first embodiment is that the degree of water level fluctuation is calculated in the control circuit unit 4 and the result is used for lingerie or the like. The point is to distinguish between delicate cloth and rugged cloth such as towel, and set the water level, water flow, and washing time according to the cloth type.

An arithmetic expression based on FIG. 2B is shown in the following (Equation 1) in order to obtain the degree of acceleration change in the frequency value used in this embodiment. (Equation 1) is to obtain the degree of acceleration change of the frequency value in a predetermined period within each cycle.

[0022]

[Equation 1]

The operation of the washing machine control device configured as described above will be described below. First, the control circuit unit 4
2A, the frequency waveform as shown in FIG. 2A is repeatedly input, but in the control circuit unit 4, the input waveform (frequency waveform) is read at every predetermined time and within each predetermined cycle (frequency maximum value fmax). The degree of accelerating change in the frequency value during the preceding and following periods, for example, the period from 0.7 second to 1.7 seconds after the motor is turned on, is calculated and stored according to (Equation 1). As shown in FIG. 2B, the calculation method is as follows: a straight line extension of the read data fN-2 and the next read data fN-1 and a next read data fN within a predetermined period.
The vertical crossing point (a) is calculated and the absolute value of the difference between the crossing point (a) and fN (indicated by an arrow) is calculated.

Next, the average value of the degree of accelerating change in the frequency value in a predetermined cycle period from the start of washing (for example, the third to tenth cycles from the start of washing) is calculated. FIG. 4 shows the relationship between the cloth type and the average value of the accelerating change degree of the frequency value in the period of a predetermined cycle from the start of the washing for the cloth type having a specific water level and the same amount of cloth. .. The range of the arrow in FIG. 4 shows the variation width of the average value of the accelerating change degree of the frequency value in each fabric type, and the average value of the accelerating change degree of the actual frequency value is the variation value. Exists in the width.

As can be seen from FIG. 4, in the case of a delicate cloth type such as lingerie, the average value of the above-mentioned degree of accelerating change in the frequency value becomes small, and in the case of a rugged cloth type such as a towel, the above-mentioned frequency. On the contrary, the average value of the acceleration degree of the value becomes large. This is because the degree of water level variation due to the cloth rotation during washing and washing is small for delicate cloths such as lingerie, and large for rugged cloths such as towels. Here, if a threshold value B for discriminating between delicate cloth such as lingerie and stiff cloth such as towel is appropriately set, delicate cloth such as lingerie and stiff cloth such as towel may be discriminated. It will be possible. That is,
If the average value of the acceleration change rate of the frequency value is larger than the threshold value B, it is determined that the cloth type of the laundry 7 is a rugged cloth such as a towel, and the water flow is controlled to be strengthened. Further, when the average value of the accelerating change rate of the frequency value is equal to or less than the threshold value B, it is determined that the laundry 7 is a delicate cloth such as lingerie, and the control for weakening the water flow or the water level is performed. The control is performed to increase it.

(Embodiment 3) An embodiment of the third invention will be described below with reference to FIGS. 1, 2 and 5. The configuration of this embodiment is similar to that of FIG. The input to the control circuit unit 4 is the same as in the first embodiment, but different from the first embodiment is that the degree of acceleration change in the detection output value and the peak value of the detection output value within a predetermined period are different. The difference is that the variation is calculated, the delicate cloth such as lingerie and the rugged cloth such as the towel are discriminated according to the calculated value, and the water level, water flow, and washing time are set according to the cloth type. That is, it is a combination of the first invention and the second invention.

The operation of the washing machine control device configured as described above will be described below. First, the frequency waveform as shown in FIG. 2 is repeatedly input to the control circuit unit 4, but within the control circuit unit 4, the input waveform (frequency waveform) is read at a predetermined time interval and within a predetermined period for each cycle (for example, , Acceleration change degree of frequency value in 0.7 seconds to 1.7 seconds after motor is turned on is calculated and stored based on (Equation 1), and at the same time, maximum value of frequency waveform in each cycle Extract and store fmax.

Next, the variation degree of the average value and the maximum value (fmax) of the accelerating change degree of the frequency value in a predetermined cycle period from the start of washing (for example, the third to tenth cycles from the start of washing) is calculated. To do. FIG. 5 shows the variation degree of the average value and the maximum value (fmax) of the accelerating change rate of the frequency value in a predetermined cycle period from the start of the washing and the cloth degree with respect to the cloth type with a specific water level and the same cloth amount. It shows the relationship of species. The range shown by the curve in FIG. 5 shows the range of variation of the points determined by the degree of variation between the average value of the accelerating changes in the frequency values and the maximum value (fmax) of the frequency values in each fabric type. The variation degree between the average value of the acceleration-like degree of change of the actual frequency value and the maximum value (fmax) of the frequency value exists in this variation width. As can be seen from FIG. 5, in the case of a delicate cloth type such as lingerie, the average value and the maximum value (fmax) of the above-described acceleration rate change of the frequency value.
In the case of a rugged cloth type such as a towel, the variation degree of the average value and the maximum value (fmax) of the above-described acceleration-based change rate of the frequency value becomes conversely large. This is because the degree of water level fluctuation and the maximum value of water level fluctuation due to the cloth rotation during washing agitation differ depending on the cloth type. Here, the threshold value for distinguishing between delicate cloth such as lingerie and rugged cloth such as towel is appropriately set (see FIG. 5).
The threshold line C) in the middle makes it possible to distinguish between delicate cloth such as lingerie and rugged cloth such as towels. That is, when the point determined by the variation degree of the average value and the maximum value (fmax) of the acceleration value of the frequency value is on the right side of the threshold line C, the laundry 7 is a kind of cloth such as a towel. It is judged as a clean cloth and the water flow is strengthened. Further, when the point determined by the variation degree between the average value and the maximum value (fmax) of the accelerating change rate of the frequency value is on the left side of the threshold line C, the laundry 7 is of a delicate type such as lingerie. It determines that the cloth is a natural cloth and controls the water flow to weaken or to raise the water level.

(Embodiment 4) An embodiment of the fourth invention will be described below with reference to FIGS. 1, 2 and 6. The configuration of this embodiment is similar to that of FIG. The input to the control circuit unit 4 is the same as in the first embodiment, and is a combination of the second embodiment and the third embodiment. That is, the degree of water level fluctuation and the maximum displacement of the water level fluctuation (difference between the maximum value and the minimum value of the water level fluctuation) are calculated in the control circuit unit 4,
As a result, a delicate cloth such as lingerie and a rugged cloth such as a towel are discriminated, and the water level, water flow, and washing time are set according to the cloth type.

The operation of the washing machine controller constructed as described above will be described below. First, the control circuit unit 4 is repeatedly input with a frequency waveform as shown in FIG. 2A. However, in the control circuit unit 4, the input waveform (frequency waveform) is read at a predetermined time interval and a predetermined period for each cycle. Within (for example, 0.7 seconds to 1.
The degree of accelerating change of the frequency value in the period of 7 seconds) is calculated and stored based on (Equation 1) and the maximum value fm of the frequency waveform.
The ax and the minimum value fmin are extracted, and the difference (fmax-fmin) between the maximum value and the minimum value of the frequency waveform is calculated and stored.
FIG. 5 shows the relationship between the difference between the maximum value and the minimum value (fmax-fmin) of the frequency values and the cloth type for a specific water level and the same cloth amount in a predetermined cycle period from the start of the washing. It is a thing. The range of the arrow in FIG. 5 is the difference (fmax-f) between the maximum and minimum frequency values for each fabric type.
min) mean value variation width, and the difference between the maximum and minimum actual frequency values (fmax-fmin)
The average value of exists in this variation range.

Next, the average value and the difference between the maximum value and the minimum value (fmax-) of the accelerating change degree of the frequency value in a predetermined cycle period from the start of washing (for example, the third to tenth cycles from the start of washing). fmin) is calculated. FIG. 6 shows the difference between the average value and the maximum value and the minimum value (fmax-) of the accelerating change degree of the frequency value in the period of a predetermined cycle from the start of the washing for a cloth type having a specific water level and the same cloth amount. fmin) and the cloth type. The range indicated by the curve in FIG. 6 is determined by the average value of the acceleration degree of the frequency values of each cloth type and the average value of the difference (fmax-fmin) between the maximum value and the minimum value of the frequency values. It shows the range of variation,
The average value of the acceleration degree of the actual frequency value and the average value of the difference (fmax-fmin) between the maximum value and the minimum value of the frequency values are present in this variation width.

As can be seen from FIG. 6, in the case of a delicate fabric type such as lingerie, the average value of the above-mentioned degree of accelerating change in the frequency value and the average value of the difference between the maximum value and the minimum value (fmax-fmin) are In the case of a rugged cloth type such as a towel, the average value of the above-mentioned degree of accelerating frequency value change and the difference between the maximum value and the minimum value (fmax-fmin)
On the contrary, the average value of becomes large. This is because the degree of water level fluctuation and the maximum displacement of the water level fluctuation (difference between the maximum value and the minimum value of the water level fluctuation) due to the cloth rotation during washing and stirring are different depending on the cloth type.
Here, if a threshold for distinguishing delicate cloth such as lingerie and rugged cloth such as towel is appropriately set (threshold line D in FIG. 6), delicate cloth such as lingerie and towel It is possible to discriminate such a stiff cloth. That is, the difference (fmax-fmin) between the average value and the maximum value and the minimum value of the degree of acceleration change of this frequency value.
When the point determined by the average value of is on the right side of the threshold line D, it is determined that the cloth type of the laundry 7 is a rugged cloth such as a towel and the water flow is controlled to be strengthened. If the point determined by the average value of the acceleration degree of the frequency value and the average value of the difference (fmax-fmin) between the maximum value and the minimum value is on the left of the threshold line D, the laundry 7 It judges that the cloth type is a delicate cloth such as lingerie and controls the water flow to be weakened or the water level to be raised.

(Embodiment 5) An embodiment of the fifth invention will be described below with reference to FIGS. 1, 2 and 7. The configuration of this embodiment is similar to that of FIG. The input to the control circuit unit 4 is the same as that in the fourth embodiment, but the difference from the fourth embodiment is that the maximum of the frequency waveform that is the input waveform to the control circuit unit 4 in the control circuit unit 4 is different. Instead of calculating the average value of the difference between the value and the minimum value (fmax-fmin),
Calculates the average value of the accelerating change rate of the frequency value and the deviation due to the accelerating change rate of the frequency value obtained for each cycle, and determines the delicate cloth such as lingerie and the rugged cloth such as towel based on the result. The water level according to the cloth type,
The point is to set the water flow and washing time.

The arithmetic expression used in this embodiment is shown in (Equation 2). (Equation 2) is to calculate the deviation from the average value of the acceleration degree of change of the frequency value calculated using (Equation 1).

[0035]

[Equation 2]

The operation of the washing machine control device configured as described above will be described below. First, the frequency waveform as shown in FIG. 2 is repeatedly input to the control circuit unit 4, but within the control circuit unit 4, the input waveform (frequency waveform) is read at a predetermined time interval and within a predetermined period for each cycle (for example, , A period of 0.7 seconds to 1.7 seconds after the motor is turned on), and stores the calculation of the acceleration degree of the frequency value. Next, an average value of the degree of accelerating change of the frequency value in a predetermined cycle period from the start of washing (for example, the third to tenth cycles from the start of washing) is calculated. Then, the absolute value of the difference between the acceleration rate of change of the frequency value and the average acceleration rate of change of the frequency value, which has already been calculated and stored, is calculated using (Equation 2), and this is calculated from the start of washing. It is determined as a deviation in the period of a predetermined cycle (for example, the third cycle to the tenth cycle from the start of washing). FIG. 7 shows the relation between the cloth type and the average value and the deviation of the accelerating change degree of the frequency value in the period of the predetermined cycle from the start of the washing for the cloth type of the specific water level and the same amount of cloth. Is.

As can be seen from FIG. 7, in the case of a delicate cloth type such as lingerie, the average value and the deviation of the above-described acceleration of the frequency value are small, and in the case of a rugged cloth type such as a towel, On the contrary, the average value and the deviation of the degree of accelerating change of the frequency value of become large. This is because the degree of water level fluctuation in each cycle due to the cloth rotation during washing and stirring varies depending on the cloth type. If a threshold value for distinguishing between delicate cloth such as lingerie and rugged cloth such as towel is appropriately set (threshold line E in FIG. 7),
It is possible to distinguish between delicate cloth such as lingerie and rugged cloth such as towels. That is, when the point determined by the average value and the deviation of the accelerating change degree of the frequency value is on the right of the threshold line E, it is determined that the laundry 7 is a kind of cloth such as a towel. Control to strengthen the water flow. If the point determined by the average value and the deviation of the accelerating change degree of the frequency value is to the left of the threshold line E, it is determined that the laundry 7 is a delicate cloth such as lingerie. Control to weaken the water flow or increase the water level.

In the first, second, third, fourth, and fifth embodiments, when it is judged that the cloth type of the laundry is a delicate cloth such as lingerie, the water flow is weakened or the water level is controlled. If the laundry type is determined to be a rugged cloth such as a towel, it is said that the control is performed to strengthen the water flow. Needless to say, a washing method such as strength and water level) may be controlled according to the type of laundry used.

Further, in the first, second, third, fourth, and fifth embodiments, the threshold line or the like for discriminating the cloth type is a straight line and the number is one, but the threshold The value line is for distinguishing the cloth type in order to set the washing condition according to the cloth type, and the threshold line may be a polygonal line or a curve, or the number thereof may be plural.

Although the output of the water level detector 3 is a frequency, it goes without saying that the output may be a physical quantity having a correlation with the water level in the washing / dehydrating tub 6 or the fluctuation of the water level.

[0041]

As described above, according to the first aspect of the present invention, a motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, and the washing / dehydrating device. It has a water level detection unit for detecting the water level in the tank, and a control circuit unit for controlling the energization of the motor and the opening / closing control of the water supply device. The control circuit unit has a detection output during stirring from the water level detection unit. Is read every predetermined time, the maximum value variation of the detection output value within a predetermined period is calculated, and the washing conditions such as water level, water flow, and washing time are set according to the calculated value. Control that weakens the flow of water when it is determined that the laundry type is a delicate cloth such as lingerie by focusing on the degree of fluctuation of the water level fluctuation peak value that varies depending on the type of cloth that occurs in the washing and dewatering tub Or the water level Do Mel control, and performs control to enhance the water flow when the cloth species is determined as a stiff cloth, such as a towel. That is, in order to determine the cloth type of clothes during washing and stirring, the state of putting into the washing / dehydrating tank (how to put cloth) is alleviated almost uniformly by stirring, and the cloth type is detected with high accuracy. It is possible to set the optimum washing conditions according to the type of cloth, such as the optimum water level and the strength of the water flow, and as a result, it is possible to perform appropriate washing according to the type of cloth.

A second aspect of the present invention has a higher precision in detecting the type of cloth than the first aspect of the invention, and supplies water to the washing / dehydrating tub and the motor for driving the stirring blade and the washing / dehydrating tub. It has a water supply device, a water level detection unit for detecting the water level in the washing / dehydrating tub, and a control circuit unit for controlling energization of the motor and opening / closing control of the water supply device, and the control circuit unit has the water level. The detection output during stirring is read from the detection unit at every predetermined time, the degree of acceleration change of the detection output value within a predetermined period is calculated, and the washing conditions such as water level, water flow, and washing time are calculated according to the calculated value. It is set, and a predetermined area of water level fluctuation that varies depending on the type of cloth generated in the washing / dehydrating tub during washing and stirring (for example, 0.7 seconds to 1.7 seconds after the motor is turned on for each cycle). Change of water level during By grasping the cloth type of laundry by paying attention to the degree, and judging that the cloth type is a delicate cloth such as lingerie, control is performed to weaken the water flow or increase the water level, and the cloth type is a rugged cloth such as a towel. If it is judged that it is, the control for strengthening the water flow is performed.
Here, the first invention judges the cloth type of the laundry at one point (only the peak value of the water level fluctuation) during the washing and stirring, whereas the second invention judges the water level variation during the washing and stirring. Since the laundry type is determined based on the degree of acceleration of the water level fluctuation within a predetermined area, the laundry type is determined by a plurality of water level information items (several water level information items). It is performed according to the degree of change. Therefore, it is possible to detect the cloth type with higher accuracy than the first invention, and set the washing conditions according to the cloth type such as the optimum water level and the strength of the water flow according to the cloth type. Appropriate washing according to the species is possible.

A third aspect of the present invention has a higher accuracy in detecting the type of cloth than the first aspect of the invention, and supplies water to the washing / dehydrating tub and the motor for driving the stirring blade and the washing / dehydrating tub. It has a water supply device, a water level detection unit for detecting the water level in the washing / dehydrating tub, and a control circuit unit for controlling energization of the motor and opening / closing control of the water supply device, and the control circuit unit has the water level. The detection output during stirring is read from the detection unit at every predetermined time, the acceleration change degree of the detection output value and the peak value variation of the detection output value within a predetermined period are calculated, and the water level and water flow are calculated according to the calculated values. It sets the washing conditions such as the washing time, and it changes depending on the cloth type that occurs in the washing and dehydration tub during washing and agitation. Water level fluctuation peak value By grasping the type of laundry by focusing on the degree of variation, if it is determined that the type of laundry is a delicate cloth such as lingerie, control is performed to weaken the water flow or increase the water level, and the cloth type is rugged such as towels. When it is judged that it is a cloth, it controls to strengthen the water flow. Therefore, further than the first invention, it is possible to set the washing conditions according to the cloth type such as the optimum water level and the strength of the water flow according to the cloth type detection with high accuracy.
Appropriate washing according to the type of cloth is possible.

The fourth aspect of the invention is intended to further improve the accuracy of determining the type of cloth, and is a combination of the second and third aspects of the invention. That is, a fourth aspect of the present invention is a motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, and a water level detector for detecting the water level in the washing / dehydrating tub. A control circuit section for controlling energization of the motor and opening / closing control of the water supply device, the control circuit section reads a detection output during stirring from the water level detection section at predetermined time intervals, and within a predetermined time period. The degree of accelerating change in the detection output value and the difference between the maximum value and the minimum value of the detection output value are calculated, and the washing conditions such as water level, water flow and washing time are set according to the calculated values. Water level fluctuation in a predetermined area (for example, 0.7 seconds to 1.7 seconds after the motor is turned on for each cycle) that varies depending on the type of cloth generated in the washing / dehydrating tank during stirring Acceleration degree of change and water level fluctuation By focusing on the large displacement (the difference between the peak value generated when the motor is on and the peak value generated when the motor is off), the cloth type of the laundry is grasped, and if it is judged that the cloth type is delicate cloth such as lingerie, control to weaken the water flow or Control to raise the water level,
When it is determined that the cloth type is a rugged cloth such as a towel, the water flow is controlled to be strengthened. By combining the second invention and the third invention, the cloth type and the water level during washing and stirring that are characterized by the maximum displacement of the water level fluctuation during washing and stirring (the difference between the peak value when the motor is on and the peak value when the motor is off) It is now possible to collectively detect cloth types that are characterized by the accelerating degree of change in water level fluctuation within a predetermined area of fluctuation, and there are many types of cloth types that can be distinguished from delicate cloth types such as lingerie. .. Therefore,
More than the second invention and the third invention, it is possible to set the washing conditions according to the type of cloth such as the optimum water level and the strength of the water flow according to the type of cloth with high accuracy in detecting the type of cloth. As a result, proper washing according to the type of cloth becomes possible.

The fifth aspect of the present invention is to detect the cloth type with higher accuracy than the second aspect of the invention. The fifth aspect of the present invention includes a motor for driving a washing / dehydrating tub or a stirring blade, and water supply to the washing / dehydrating tub. And a water level detector for detecting the water level in the washing / dehydrating tub, and a control circuit unit for controlling the energization of the motor and the opening / closing control of the water supply unit. The detection output during stirring is read at every predetermined time from the water level detection unit, and the acceleration change degree of the detection output value within a predetermined period and the deviation of the acceleration change degree are calculated, and according to the calculated value. It sets the washing conditions such as water level, water flow, washing time, etc., and a predetermined area of water level fluctuation (for example, the motor is turned on for each cycle) that varies depending on the type of cloth generated in the washing / dehydrating tub during washing and stirring. From 0.7 seconds For a period of 1.7 seconds), the type of laundry is caught by focusing on the acceleration of the water level fluctuation and the deviation of the water level fluctuation, and it is judged that the cloth type is delicate cloth such as lingerie. The control for weakening the water flow or the control for raising the water level is performed, and when it is judged that the cloth type is a rugged cloth such as a towel, the water flow is strengthened. The second aspect of the present invention determines the laundry type by the degree of accelerating change in water level fluctuation during a predetermined cycle, while the fifth invention accelerates water level fluctuation within a predetermined period. Since the cloth type of the laundry is judged based on the deviation of the degree and the acceleration change degree of the water level fluctuation, it is possible to grasp the temporal water level fluctuation which varies depending on the cloth type during washing stirring. Therefore, further than the first invention, it is possible to set the washing conditions according to the cloth type such as the optimum water level and the strength of the water flow according to the cloth type with high precision cloth type detection,
As a result, proper washing can be performed according to the type of cloth.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a controller of a washing machine showing an embodiment of the present invention.

FIG. 2 (a) is a characteristic diagram showing a correlation between an on period and an off period of a motor according to an embodiment of the present invention and a frequency which is an output of a water level detection unit. Of the calculation points used when calculating the acceleration change degree of the data and the frequency that are actually read for each time and the acceleration change amount at each point

FIG. 3 is a characteristic diagram showing variations in maximum value of cloth type and frequency when agitated at a specific water level and the same cloth amount in the first embodiment of the present invention.

FIG. 4 is a characteristic diagram showing variations in the average value of the acceleration rate change degree of the cloth type and the frequency value when agitated at the specific water level and the same cloth amount in the second embodiment of the present invention.

FIG. 5 is a characteristic diagram showing variations in the average value and the maximum value of the acceleration change degree of the cloth type and the frequency value when agitated at the specific water level and the same cloth amount in the third embodiment of the present invention.

FIG. 6 is a characteristic diagram showing an average value and a difference between a maximum value and a minimum value of an accelerating degree of change in frequency of a cloth type when agitated at a specific water level and the same cloth amount in a fourth embodiment of the present invention.

FIG. 7 is a characteristic diagram showing the average value of the acceleration change degree of the cloth type and the frequency and the deviation thereof when agitated at the specific water level and the same cloth amount in the fifth embodiment of the present invention.

[Explanation of symbols]

 1 Motor 2 Water Supply Device 3 Water Level Detection Unit 4 Control Circuit Unit 6 Washing and Dehydrating Tank 8 Stirring Blade

Claims (5)

[Claims] 1. A motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, a water level detector for detecting a water level in the washing / dehydrating tub, and the motor. And a control circuit section that controls the opening and closing of the water supply device. The control circuit section reads the detection output during stirring from the water level detection section at every predetermined time and outputs the detection output within a predetermined period. A control device for a washing machine that calculates variations in peak value and sets washing conditions such as water level, water flow, and washing time according to the calculated values. 2. A motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, a water level detector for detecting a water level in the washing / dehydrating tub, and the motor. And a control circuit section that controls the opening and closing of the water supply device. The control circuit section reads the detection output during stirring from the water level detection section at every predetermined time and outputs the detection output within a predetermined period. A control device for a washing machine that calculates an acceleration change rate of a value and sets washing conditions such as a water level, a water flow, and a washing time according to the calculated value. 3. A motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, a water level detector for detecting a water level in the washing / dehydrating tub, and the motor. And a control circuit section that controls the opening and closing of the water supply device. The control circuit section reads the detection output during stirring from the water level detection section at every predetermined time and outputs the detection output within a predetermined period. A control device for a washing machine that calculates a degree of accelerating change of a value and a peak value variation of a detection output value, and sets washing conditions such as a water level, a water flow, and a washing time according to the calculated value. 4. A motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, a water level detector for detecting a water level in the washing / dehydrating tub, and the motor. And a control circuit section that controls the opening and closing of the water supply device. The control circuit section reads the detection output during stirring from the water level detection section at every predetermined time and outputs the detection output within a predetermined period. A control device for a washing machine, which calculates a degree of accelerating change of a value and a difference between a maximum value and a minimum value of detection output values and sets washing conditions such as a water level, a water flow, and a washing time according to the calculated values. 5. A motor for driving a washing / dehydrating tub and a stirring blade, a water supply device for supplying water to the washing / dehydrating tub, a water level detector for detecting a water level in the washing / dehydrating tub, and the motor. And a control circuit section that controls the opening and closing of the water supply device. The control circuit section reads the detection output during stirring from the water level detection section at every predetermined time and outputs the detection output within a predetermined period. A control device for a washing machine, which calculates a degree of accelerating change of a value and a deviation of the degree of accelerating change and sets washing conditions such as water level, water flow, and washing time according to the calculated value.