JP2592555B2 - 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 a washing machine, and more particularly, to an operation control device for a washing machine.

[0002]

2. Description of the Related Art Conventionally, washing machines having various functions have been proposed.

One of them is disclosed, for example, in Japanese Patent Application Laid-Open No. 62-381.
As disclosed in JP-A Nos. 96 and 62-168210, there is an apparatus provided with means for supplying cold water and hot water into a washing tub.

There is also provided a device which detects the amount of laundry to be washed when water is supplied to the washing tub up to a certain water level, and sets a final washing water level in accordance with the amount of laundry.

[0005] Further, there is also one provided with means for detecting the quality of the laundry cloth.

Further, for example, Japanese Patent Application Laid-Open No. 61-196
Nos. 995, 62-181096, 62-1921
As disclosed in Japanese Patent Application Laid-Open No. 96-96, there is also a device provided with a means for resetting the initially set washing time based on the detection data of the washing water temperature.

[0007]

However, according to the above-mentioned prior art, which has a means for supplying cold water and hot water into the washing tub, the water temperature is relatively high in summer and the cleaning effect is high. Washing can be carried out using fairly good tap water, which is economical in this respect, and although it is economically disadvantageous in winter, the washing effect can be maintained using hot water.

However, in this conventional technique,
It only controls the temperature of the washing water and does not recognize the amount of washing water that matches the amount of laundry put into the washing tub. It is uneconomical if you do.

[0009] Further, since there is no knowledge about the quality of laundry cloth, when washing ordinary fibers and delicate fibers such as wool with a water stream of the same strength, the strength of the water stream is adjusted to that of ordinary fiber washing. If the water flow is set too high, the water flow is too strong for delicate fibers such as wool and cannot be soft-washed. Conversely, the water flow is set to match the delicate fiber washing such as wool. In such a case, the water flow is too weak for ordinary fibers, which causes a problem that the dirt removing effect is impaired.

[0010] Further, although it is possible to supply cold and hot water, since it is not recognized in terms of the washing time suitable for each water temperature, washing can be performed even though dirt has already been sufficiently removed. If it continues, it wastes power and is not only uneconomical for users, but also causes fabric damage,
If the washing time ends even though the dirt-removing effect is still insufficient, the washing must be performed again, causing a problem that the usability is poor.

Next, of the above-mentioned prior arts, there is provided a means for detecting the amount of laundry to be washed when water is supplied to the washing tub to a predetermined water level, and setting a final washing water level in accordance with the amount of laundry. According to the prior art, the amount of washing water corresponding to the amount of cloth put into the washing tub is always supplied, which is economical.

However, according to this conventional technique, only the amount of washing water is controlled, and it is not recognized in terms of the washing water temperature. There are drawbacks in terms of effectiveness.

Further, even if the remaining hot water in the bath is used the next day in winter, the temperature is considerably lower than in summer, so that the cleaning effect is not so much improved.

Furthermore, the problem in the case where the laundry cloth quality is not recognized and the recognition of the laundry cloth quality is lacking has been described above.

Further, the problem in the case where the washing time matching the water temperature is not recognized and the recognition of the washing time matching the water temperature is lacking is as described above.

Next, of the above-mentioned prior arts, according to the technology provided with a means for detecting the quality of the laundry cloth, the laundry suitable for the cloth quality of the clothes can be performed, and delicate fibers such as wool can be used in general. It is convenient when washing separately from the fiber.

However, in this conventional technique,
The problem in the case of only detecting the laundry cloth quality but not recognizing the laundry water temperature and lacking the recognition of the laundry water temperature has already been described.

Further, there is a problem in that the operator does not recognize the amount of washing water corresponding to the amount of cloth put into the washing tub and does not recognize the amount of washing water corresponding to the amount of cloth put into the washing tub. Is as described above.

In addition, he does not recognize the washing time corresponding to the water temperature.

Next, of the above-mentioned prior arts, according to the technique including means for resetting the originally set washing time based on the detection data of the washing water temperature, the washing time based on the water temperature is set to an optimum value. By resetting the settings, it is possible to prevent waste of power due to excessive washing time, uneconomics for the user, damage to the cloth, and the like, and to eliminate problems such as shortage of washing time and deterioration of the dirt removing effect. it can.

However, according to this conventional technique, only the initially set washing time is reset based on the detection data of the washing water temperature, and the washing time corresponding to the amount of cloth put into the washing tub is merely set. Not aware in terms of water volume.

Further, he does not recognize the laundry quality.

An object of the present invention is not only to control the temperature of the washing water as in the prior art, but also to detect the amount of the cloth put in the washing tub and supply the washing water according to the amount of the cloth. Not only does it not only detect the cloth quality of the clothes, but also performs the laundry that matches the cloth quality,
In addition to simply driving the washing machine for the time that matches the water temperature,
It is possible to execute the operation of the washing machine taking in all the conditions described above, and therefore, due to the synergistic effect obtained by combining the above-mentioned conditions, the washing operation is performed much more finely than in the past, and the washing finish is achieved. An object of the present invention is to provide an improved washing machine which is much better than the conventional one due to a synergistic effect obtained by combining the above-mentioned conditions in terms of operating economy such as electric power and water consumption, as well as being excellent. .

[0024]

Means for Solving the Problems] The object is achieved in a washing machine having a function to be executed based on the condition set in advance the stroke of washing, to water and cold and hot water into the washing tub, the temperature of its Means for controlling in a predetermined temperature direction, means for detecting the amount of laundry to be washed when water is supplied to the washing tub to a certain low water level, and means for automatically setting the final washing water level in accordance with the amount of laundry When the means for detecting the fabric quality of clothing, the washing water level, quantity of laundry, fabric quality, all sensed data originally based on the set have water stream strength of the washing water temperature, means for resetting the washing time This is achieved by providing:

[0025]

According to the present invention having the above structure,
Washing and cold water and hot water and water into the tank, by providing a means for controlling the temperature of that in a predetermined temperature direction, water temperature is relatively high in summer, the laundry cleaning effect with adequate clean water It can be carried out, is economical, and can maintain the cleaning effect by using hot water in winter.

Further, by providing a means for detecting the amount of washing cloth when water is supplied to the washing tub to a certain low water level,
In addition to the above-described operation, the amount of washing water is always supplied in accordance with the amount of cloth put into the washing tub, which is economical.

Furthermore, by providing a means for detecting the fabric quality of clothing, in addition to the synergistic effect, it is possible to perform appropriate to fabric quality of new clothes washing, the general delicate fabrics such as wool It is convenient when washing separately from the fiber.

Further, the washing water level, the cloth amount, the cloth quality,
By providing a means for resetting the intensity of the water flow and the washing time which were initially set based on all the detection data of the washing water temperature, in addition to the synergistic action described above and the above-mentioned, the electric power due to the extra washing time is further provided. In addition, it is possible to prevent wasteful use, uneconomics for the user, damage to the cloth, and the like, and on the other hand, it is possible to eliminate the problem that the cleaning effect is impaired due to insufficient washing time.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to an embodiment of the present invention, in which the present invention is applied to a fully automatic washing machine in which washing, rinsing, and dehydrating processes are executed under preset conditions, as an example. FIG. 2 is a vertical sectional side view showing the entire internal structure of the fully automatic washing machine.

In FIG. 2, 1 is an outer frame, 21 is a corner plate provided at the upper four corners of the outer frame 1, and the outer tank 2 is supported on the corner plate 21 via four hanging rods 5. ing.

A push spring 4 for absorbing vibration during washing and spin-drying is attached to the hanging bar 5.

When washing is performed, the lid 18 is opened, clothes are put into the washing tub 3, and water is supplied according to a command from the control unit 19, and then the motor 20 is rotated forward and backward.

The rotation of the motor 20 is controlled by the motor pulley 17.
Is transmitted to the clutch pulley 15 incorporated in the clutch 14 via the V-belt 16.

The rotating force transmitted to the clutch pulley 15 rotates the agitating blade 7 located at the center of the washing tub 3 through the clutch 14 during washing to perform washing.

At the time of drainage, the motor 20 is stopped by a command from the control unit 19, the drain valve 12 is opened, and the drain hose 13 is opened.
, The washing water in the washing tub 3 is discharged out of the machine.

After draining, the process shifts to a dehydration process. At the time of dehydration, the outer tub 2 swings greatly depending on the condition of the clothes. To prevent this, the balancer 6 is placed above the washing tub 3. Is provided to prevent the outer tub 2 from swinging due to dehydration.

[0037] During the dehydration, as well as during washing, the rotation of the motor 20, the motor pulley 17, via a V-belt 16 is transmitted to the clutch pulley 15 incorporated in the clutch 14.

The rotating force transmitted to the clutch pulley 15 rotates the washing tub 3 at high speed through the clutch 14 during dehydration, and dewaters the water in the clothes to the outer tub 2 by the centrifugal force.

The washing water dehydrated in the outer tub 2 is supplied to the drain valve 12
By the above operation, the water is drained from the drain hose 13 to the outside of the machine.

FIG. 2 is a diagram for explaining the details of the control unit 19 described with reference to FIG.

Timer-33, CPU (Central Processing Unit) 3
2, an electronic control circuit comprising a memory 31, an input port 29, and an output port 30, controls the entire process from washing to dehydration as in the case of a timer constituted by a timer motor and a cam switch. Govern.

More specifically, the electronic control circuit 34 is for automatically and centrally managing the process from the washing process to the final dehydration process. The control command at the time of washing is controlled by a central processing unit (CPU). ) 32, and a central processing unit (CPU) 32 has an arithmetic unit and a control unit, and forms the center of the system.

Basically, instructions are fetched, decoded, and executed. Specifically, arithmetic and logical operations, read and write control of the contents of a memory designated address, input / output to a designated address to an input / output device are performed. Control and control the program flow.

The memory 31 stores programs and data, and is a RAM having both reading and writing functions.
And a ROM having only a read function.

The RAM is used as a work area for storing data or assembling a program.
M is used when a fixed program or fixed data is input and the same processing is performed at any time.

The input port 29 and the output port 30 are C
A circuit that mediates the transfer of data between the PU 32 and the input / output device, and is generally called an I / O port.

The input port 29 receives an electric command from a fully automatic washing machine.
3. Cloth sensor 22, Cloth sensor 57, Water level sensor 58, Lid switch 24, Program selection switch 2
5, start / stop switch 26, temperature sensor 5
3 are connected.

The output port 30 includes a washing motor 20, a water supply valve 10, a hot water supply valve 10A, and a drain valve 1.
2, a clutch solenoid 27, an alarm 28, and the like are connected. Each of the input / output devices is controlled via the input / output ports 29, 30 based on a command from the CPU 32, and a series of operations from washing to dehydration are performed. Perform the operation.

FIG. 3 is a block diagram of the fully automatic washing course.

Here, the entire process from washing to dehydration of the fully automatic washing machine will be described in further detail with reference to FIG. 1 and FIG. 4 showing the washing machine operation panel based on FIG.

By pressing a power switch 23 indicated by a reference numeral 23 in FIGS. 1 and 4, an arbitrary washing course is set by a program selection switch 25, and a start / stop switch 26 is pressed, the water supply shown in FIG. to go into.

The washing water is automatically supplied to the washing tub 3 through the water supply hose 11 and the hot water supply hose 11A until the water reaches a predetermined water level.

More specifically, the washing water level from the start of the water supply to the stop of the water supply is detected in steps, and in each of the above steps, the temperature of the washing water is controlled in a predetermined temperature direction. When the water is supplied to a certain level, the agitator is operated for a few seconds to move the clothing, and the resistance change of the agitator based on the amount of clothing is compared with the value stored in the microcomputer beforehand. After detecting the amount, the final washing water level is automatically set according to the amount of the clothes.

When the microcomputer reaches the final washing water level by the water level sensor 58, the washing blade is operated again for several seconds to move the laundry, and the resistance value of the stirring blade at this time changes. And the value stored in the microcomputer in advance to detect the cloth quality of the clothes, correct the initially set washing time, and start the washing.

That is, the initially set washing time is corrected to the optimum washing time in real time based on data that comprehensively considers the amount of washing water, the amount of washing, and the quality of washing, and washing is started.

After the washing has been performed for a certain period of time, the drain valve 12 is opened, and the outer tub 2 is drained through the drain hose 13.
The washing water inside is discharged outside the machine.

When it is detected by the water level sensor 58 that the washing water in the outer tub 2 has been completely drained, the operation proceeds to intermediate dehydration, and the washing tub 3 is rotated at a high speed to contain the detergent in the clothes. The washing water is centrifugally dehydrated.

After the completion of the dehydration, water is supplied for rinsing, and the rinsing is started after reaching a specified water level.

The intermediate dehydration and final dehydration are performed in the same manner as in the above-mentioned intermediate dehydration, and the rinsing is performed in the same manner as in the above-mentioned rinsing.

FIG. 5 is a front view of a large liquid crystal display (LCD) displaying the washing conditions set by the operation panel shown in FIG.

The LCD displays a washing course 46, a washing water level 47, a washing time and water temperature display 48, a rinsing frequency display 49, a dehydration time display 51, and a current time 50.
There are indications.

These display functions will be described with reference to the operation panel diagram of FIG. 4. When the triangular arrow portion of the program selection switch 25 of FIG. 4 is pressed, it is displayed on the washing course 46 of FIG. One of the plurality of types of selected courses is represented by a triangle arrow mark.

When the program selection switch 25 shown in FIG. 4 is kept pressed, the display of the washing course 46 shown in FIG. 5 automatically changes, and a required course is set.

Next, by pressing the water level changeover switch 35 in FIG. 4, one of a plurality of types of wash water levels displayed on the wash water level 47 in FIG. 5 is represented by a triangular arrow mark.

When the water level changeover switch 35 in FIG. 4 is kept pressed, the display of the washing water level 47 in FIG.
The required water level is set.

By pressing the water temperature switch 39 shown in FIG. 4, the washing time and water temperature display 48 shown in FIG.
(Hot, Warm, Cold) are sequentially changed, and the set water temperature is flashed.

In addition, the display 49 of the number of times of rinsing, the display 51 of the dehydration time, the display 50 of the current time, and the like are set in the same manner. Thereafter, by pressing the start / stop switch 26 in FIG. Washing is started under the conditions.

FIG. 6 is a diagram showing a water temperature control condition supplied when the water temperature changeover switch 39 described with reference to FIGS. 4 and 5 is pressed to set the washing water temperature. Here, the washing water temperature is set to Cold. FIG. 7, which is an explanatory diagram of the control operation when set, FIG. 8, which is an explanatory diagram of the control operation also when set to Warm, and FIG. 9, which is an explanatory diagram of the control operation when set to Hot Will be described.

First, when the water temperature changeover switch 39 is pressed to set the water temperature to Cold, the Cold portion of the water temperature display 48 shown in FIG. 5 blinks, and it is recognized that Cold has been set.

FIG. 4 shows other conditions necessary for washing.
When the start / stop switch 26 is pressed after the selection and setting on the operation panel, water supply is started.

In the case of this embodiment, the water supply is performed by selecting the selection key Col.
Since d is set, Cold water is automatically supplied from step 1 to step 4 as shown in FIGS.

The reaching of the water level in step 1 is detected by the water level sensor 58 shown in FIG. 1. In step 1, Cold water is supplied to the bottom of the outer tub 2 up to the height indicated by oblique lines.

Here, a specific example of the water level detection will be described with reference to FIG. 11. The signal of the sensor 58 is sent to the input port 29 of the microcomputer as a change in frequency due to LC oscillation, and the change in the frequency is used as the washing water level. I do.

More specifically, when the washing water is supplied to the washing tub 3 and the outer tub 2, the air in the air trap 8 at the bottom of the outer tub 2 is compressed by the water pressure, and the LC oscillating device is operated. Since the frequency f changes through the tube 9 according to the following equation, the change in the water pressure, that is, the change in the air pressure in the air trap 8 is changed by L, so that the water level and the oscillation of the water level sensor 58 shown in FIG. The relationship with the frequency holds.

[0075]

(Equation 1)

The frequency of each water level is stored in the microcomputer, and when water is supplied, the water supply is stopped when a specified water level is reached, that is, when the specified frequency is reached, and control is performed to shift to a washing process.

Next, the function of detecting the temperature of the washing water supplied in step 1 by the temperature sensor 53 will be described with reference to FIG.

As shown in FIG. 12, a temperature sensor 53 is provided on the bottom of
It is fixed at 4.

At the end of the temperature sensor 53, there is provided a temperature sensing section 55 for detecting the temperature of the washing water.
Detects washing water temperature.

The temperature sensing part 55 will be described briefly. The temperature thermostat is covered with plastics so that the metal part is not exposed to the outside.

The resistance value of the thermostat changes depending on the temperature of the washing water, and the change in the resistance value is regarded as a change in the frequency.
Is shown in

Here, referring to FIG. 12 in more detail, the change in the resistance value of the thermostat due to the change in the washing water temperature is transmitted to the microcomputer as a change in the frequency, and the relationship between the washing water temperature and the frequency set in the microcomputer in advance is determined. Based on this, the actual washing water temperature is detected.

Then, the washing water level and the water temperature detected in step 1 of FIG. 7 are stored in the microcomputer, and the routine proceeds to the next step 2.

In step 2, the temperature is further controlled based on the water temperature detected in step 1. In FIG. 7, the water temperature is set to Cold, and in step 2, the water supply while detecting the washing water level and the water temperature is not performed. This is performed with only the water supply valve 10 of the water supply hose 11 opened.

At the end of step 2, that is, when the water supply from the water supply valve 10 reaches a certain water level in the washing tub 3 as well as the outer tub 2, the agitating blade 7 is operated for several seconds to wash the clothes. To detect the amount of clothing by comparing the value of the clothing amount sensor 22 based on the resistance value change of the stirring blade 7 based on the amount of clothing and the value stored in advance in the microcomputer. Automatically set the final washing water level according to the amount of water.

In steps 3 and 4 as well, water supply is sequentially continued while detecting the washing water level and the water temperature in the same manner, and the final washing water temperature is detected in step 5 when the specified water level for washing is reached. Thereafter, in step 5, the agitating blade 7 is operated again for several seconds to move the laundry, and the detected value of the cloth sensor 57 based on the change in the resistance value of the agitating blade 7 at this time, and the microcomputer The stored values are compared to detect the cloth quality of the clothes, the initially set washing time is corrected, and the rotation cycle or the number of rotations of the stirring blade 7 is controlled.

That is, the above steps 1 to 4
Up to the temperature control process, of which step 2
Is a step of automatically setting the final washing water level in consideration of the laundry amount in addition to the temperature control.
Then, in addition to the final washing water level in consideration of the washing cloth amount in the step 2, the data in which the washing water amount, the cloth amount, and the cloth quality are comprehensively considered in consideration of the washing cloth quality are obtained.
Based on the comprehensive data, the originally set washing time is corrected to the optimum washing time in real time.

In the Warm setting water supply shown in FIG. 8, the entire temperature control step from Step 1 to Step 4 is performed by War.
Although it is natural that the warm water supply means the case where the warm water supply valve 10A and the cold water supply valve 10 are simultaneously opened and the hot water and the water are mixed and supplied. Step 9 which is a temperature control process at the time of hot setting water supply of No. 9
From Step 4 to Step 4, in Step 1, Hot water supply (Hot water supply means that the water supply valve 10 is closed and only the hot water supply valve 10A is opened, and hot water of about 70 ° C to 80 ° C is directly supplied. Water is supplied as warm water.

That is, prior to supplying water during washing, clothes and a detergent have already been put into the washing tub 3, and if hot water of 70 ° C. to 80 ° C. is directly applied to the clothes, discoloration and damage of the clothes may occur. If you press the Hot key because a problem occurs, the water supply of about 10 liters in step 1
The water supply valve 10 and the hot water supply valve 10A are simultaneously opened to provide warm water supply.

Then, in step 1 of FIGS. 8 and 9, at the same time when the water supply is completed, in the case of the Warm selection of FIG. 8, whether the temperature of the washing water in the outer tub 2 is in the range of 20 ° C. to 40 ° C. In the case of selecting Hot in FIG. 9, it is detected whether the temperature of the washing water in the outer tub 2 is in the range of 30 ° C. to 50 ° C.

In step 2, the temperature is further controlled on the basis of the water temperature detected in step 1. In the case of selecting the warm in FIG. 8, after the water supply in step 1 is completed, the temperature of the washing water in the outer tub 2 becomes lower than 20 ° C. If so, the water supply valve 10 is closed, and only the hot water supply valve 10A is opened to control the temperature of the washing water in the washing tub 3 to rise.

Conversely, if the washing water temperature in the outer tub 2 is equal to or higher than 40 ° C. after the completion of the water supply in step 1 in the Warm selection of FIG. 8, the hot water supply valve 10A is closed and the water supply Only the valve 10 is opened to control the washing water temperature in the washing tub 3 to be lowered.

On the other hand, in the case of selecting Hot in FIG. 9, if the washing water temperature in the outer tub 2 is 30 ° C. or less after the completion of the water supply in step 1, the water supply valve 10 is closed, and only the hot water supply valve 10A is provided. Is opened to control the temperature of the washing water in the washing tub 3 to rise.

Conversely, if the washing water temperature in the outer tub 2 is equal to or higher than 50 ° C. after completion of the water supply in Step 1 in the Hot selection of FIG. 9, the hot water supply valve 10A is closed and the water supply Only the valve 10 is opened to control the washing water temperature in the washing tub 3 to be lowered.

At the end of step 2, that is, when the washing water reaches not only the outer tub 2 but also a certain water level in the washing tub 3, the stirring wing 7 is operated for several seconds to move the washing garment, and After detecting the amount of clothing by comparing the detected value of the cloth amount sensor 22 based on the resistance value change of the stirring blade 7 based on the value and the value stored in advance in the microcomputer,
The final washing water level is automatically set according to the amount of the clothes.

In steps 3 and 4 as well, the supply of water is sequentially continued while detecting the washing water level and the water temperature in the same manner, and the final washing water temperature is detected in step 5 when the specified water level for washing is reached. Thereafter, in step 5, the agitating blade 7 is operated again for several seconds to move the laundry, and the detected value of the cloth sensor 57 based on the change in the resistance value of the agitating blade 7 at this time, and the microcomputer The stored values are compared to detect the cloth quality of the clothes, the initially set washing time is corrected, and the rotation cycle or the number of rotations of the stirring blade 7 is controlled.

In steps 3 and 4, the stirring blades 7 may be rotated for an appropriate period of time in order to mix the washing water in the washing tub 3 well.

The case where the washing time is corrected by detecting the water temperature in step 5 of FIGS. 7 to 9 will be described with reference to FIG.

Normal (standard) of the washing course display shown in FIG. 5 is operated by the program selection switch 25 shown in FIG.
When the course is set, the washing time is automatically set to 16 minutes regardless of the water temperature.

On the other hand, when the final washing water temperature is detected in step 5 of FIGS. 7 to 9 and the detected water temperature is classified into the temperature ranks shown in FIG. 10, the preset washing time of 16 minutes is set. Is corrected between +2 minutes and -2 minutes according to the actual washing water temperature.

That is, as shown in FIG. 13 in which the relationship between the washing water temperature and the detergency is obtained from an experiment, the removal rate of dirt on the laundry clothes tends to be greatly affected by the water temperature.

When the water temperature is low, the chemical decomposability of the detergent is reduced, and at the same time, the entire clothing shrinks and the gap between the fibers is reduced, so that the dirt clogged between the fibers becomes difficult to separate from the fibers.

In FIG. 10, the detected water temperature is 1
When the temperature is 0 ° C. or lower, two minutes are added to the initially set washing time of 16 minutes, and the dirt is removed by mechanical force as 18 minutes.

Contrary to this, when the washing water temperature becomes higher, as shown in FIG. 14, the cloth tends to be damaged.

The numerical values in FIG. 14 are experimental values when the water temperature is 40 ° C.

However, in FIG. 10, the detected water temperature is 4
If the temperature is 5 ° C. or more, the washing time is set to 16 minutes, which is initially set to 2 minutes, and the washing time is set to 14 minutes to prevent damage to the cloth.

When the temperature of the washing water is high, the clothing as a whole expands and the gap between the fibers becomes large, and the detergent penetrates to the center of the fiber to sufficiently exert its scientific decomposing ability. It can be seen that the force is not significantly affected by the washing time shown in FIG.

Therefore, when the washing water temperature is high, the washing time may be shorter than the standard washing time.

That is, in washing with high-temperature water, based on the experimental results shown in FIGS. 13 to 15, by shortening the standard washing time, it is possible to reduce damage to clothes and to improve the washing effect thereof. .

FIG. 16 shows that the dehydration rate at which the washing liquid in the clothes is dehydrated by the centrifugal force during the final dehydration process is greatly affected by the water temperature of the rinse.

On the other hand, in the present embodiment, the temperature of the water at the time of rinsing is detected by the temperature sensor 53 to control the spinning time or spinning speed.
The control at the time of dehydration will be described with reference to FIG.
6 shows the relationship between the water temperature and the dehydration rate when the dehydration time is fixed.

As shown in FIG. 16, there are various possible causes of an increase in the dehydration rate when the temperature of the washing water is high. As described above, the largest cause is that when the temperature of the washing water is high, the entire clothes expands. This is because the gap between the fibers also becomes large, and the water particles that have entered between the fibers can easily come out from between the fibers.

FIG. 17 shows the experimental results showing the relationship between the dehydration time and the dehydration rate in the case where the water temperature at the time of rinsing is low-temperature water and in the case of high-temperature water. When the water temperature is high, highly efficient dehydration performance can be obtained in a short dehydration time.

On the contrary, when the water temperature at the time of rinsing is low, it is possible to solve the problem that the dehydration performance is reduced by increasing the dehydration time.

By the way, due to some obstacle, the hot water supply valve 10
If A breaks down and the clothes are moved and washed in a state in which hot water of about 80 ° C. is put into the washing tub 3, the clothes may be damaged or the washing machine body may be damaged.

On the other hand, the state where water is contained in the washing tub 3 is detected by the water level sensor 58. When water is contained in the washing tub 3, the temperature of the washing water is always detected by the temperature sensor 53, and If the water temperature rises abnormally, for example, in FIG. 12, if the temperature exceeds 60 ° C., the operation of the washing machine body is stopped, and a warning of the water temperature abnormality is given by the alarm 28 shown in FIG. Problems such as damage and breakdown of the washing machine main body can be avoided as much as possible.

[0117]

The present invention exhibits more are at such, according to the present invention, the cold water and hot water supplying water into the washing tub, by providing a means for controlling the temperature of that in a predetermined temperature direction, summer The water temperature is relatively high, the washing effect is reasonable, the washing can be performed using clean water, and it is economical. In winter, the washing effect can be maintained by using warm water.

Further, by providing means for detecting the amount of laundry when water is supplied to the washing tub to a certain low water level,
In addition to the above-described operation, the amount of washing water is always supplied in accordance with the amount of cloth put into the washing tub, which is economical.

[0119] Further, by providing a means for detecting the fabric quality of clothing, in addition to the synergistic effect, it is possible to perform appropriate to fabric quality of new clothes washing, the general delicate fabrics such as wool It is convenient when washing separately from the fiber.

Further, the washing water level, cloth amount, cloth quality,
By providing a means for resetting the intensity of the water flow and the washing time which were initially set based on all the detection data of the washing water temperature, in addition to the above-mentioned and the synergistic action described above, the electric power due to the surplus washing time is further provided. It is possible to prevent waste of money, uneconomics for the user, damage to the cloth, and the like, and on the other hand, it is possible to eliminate the problem that shortage of washing time impairs the dirt removing effect.

That is, according to the present invention, unlike the related art, not only the washing water temperature is simply controlled but also the amount of the washing water put in the washing tub is detected and the washing water suitable for this washing amount is detected. Not only supply, but also not only detect the cloth quality of the clothes and perform the washing suitable for this cloth,
Still further, it is possible to not only operate the washing machine for the time corresponding to the water temperature, but also to execute the operation of the washing machine in which all the above conditions are taken, and thus the synergistic effect obtained by combining the above conditions is obtained. As a result, the washing effect is significantly finer than in the past, the washing finish is improved, and the above-mentioned conditions are combined to obtain a synergistic effect in terms of operating economy such as electric power and water consumption. Thus, it is possible to provide an improved washing machine which is much better than the above.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an arrangement between a microcomputer control unit and each controlled unit of a fully automatic washing machine.

FIG. 2 is a vertical sectional side view showing the entire internal structure of the fully automatic washing machine.

FIG. 3 is a block diagram of a fully automatic course for washing.

FIG. 4 is a front view of a washing machine operation panel.

FIG. 5 is a front view of a large-sized liquid crystal display (LCD) for displaying washing conditions set by the operation panel shown in FIG. 4;

FIG. 6 is a diagram showing a washing water temperature control condition.

FIG. 7 is an explanatory diagram of a control operation when the washing water temperature is set to Cold.

FIG. 8 is an explanatory diagram of a control operation when the washing water temperature is set to Hot.

FIG. 9 is an explanatory diagram of a control operation when the washing water temperature is set to Warm.

FIG. 10 is an explanatory diagram of a case where the washing water temperature is corrected based on the washing water temperature after detecting the laundry cloth amount / cloth quality.

FIG. 11 is a diagram illustrating a washing water level as a frequency change.

FIG. 12 is a diagram in which a washing water temperature is regarded as a frequency change.

FIG. 13 is a diagram showing a relationship between a washing water temperature and a cleaning power obtained by an experiment.

FIG. 14 is a diagram showing the relationship between the washing time and the damage to the cloth obtained by experiments.

FIG. 15 is a diagram showing a relationship between a washing correction time and a cleaning power obtained by an experiment.

FIG. 16 is a diagram showing a relationship between a washing water temperature and a dehydration rate obtained by an experiment.

FIG. 17 is a diagram showing a relationship between a dehydration time and a dehydration rate obtained by an experiment.

[Explanation of symbols]

10: Water supply valve for water, 10A: Water supply valve for hot water, 22: Cloth quantity sensor, 33: Timer, 53: Temperature sensor, 57:
Fabric sensor, 58 ... water level sensor.

 ────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Yasushi Shinko 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture Inside the Taga Plant, Hitachi, Ltd. (56) References JP-A-55-148594 (JP, A) JP-A-4-67894 (JP, A) JP-A-4-338488 (JP, A)

Claims (1)

(57) [Claims] 1. A washing machine based on the conditions set the stroke of wash beforehand has a function of executing, by supplying the cold water and hot water into the washing tub, means for controlling the temperature of its predetermined temperature direction Means for detecting the amount of laundry when water is supplied to the washing tub to a certain low water level, and means for automatically setting the final washing water level in accordance with the amount of laundry ,
Means for sensing the fabric quality of clothing, the washing water level, quantity of laundry, fabric quality, all detected initially based on the data set have water stream strength of the wash water temperature, and means for resetting the washing time A washing machine comprising: