JP2000350894A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability, to decrease the operating noise and temperature rise of a detergent feeding device and to make the feeding rate of a detergent the same even if the frequency of a commercial power source varies by automatically feeding the detergent with a washing machine having the detergent feeding device for feeding the liquid detergent to a washing/spin-dry basket. SOLUTION: The washing/spin-dry basket 1 is freely rotatably disposed in a water receiving tank 3 and the liquid detergent 17 of the amount usable for at least two times of washing and housed in a detergent tank 18 is fed by the detergent feeding device 19 into the washing/spin-dry 1. The operation of the detergent feeding device 19 is controlled by a control means. The control means operates the detergent feeding device 19 by cutting the frequency of the commercial power source in its half wave unit. The number of the cuts are unit time is changed according to the frequency of the commercial power source.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine having a detergent introduction device for introducing a liquid detergent into a washing and dewatering tub.

[0002]

2. Description of the Related Art Conventionally, a washing machine has been configured as shown in FIG. Hereinafter, the configuration will be described.

As shown in FIG. 6, a washing and dewatering tub 1 has a stirring blade 2 rotatably disposed on the bottom surface thereof.
Is provided with a water receiving tank 3 outside. A motor 4 for driving the washing / dewatering tub 1 and the stirring blade 2 is attached to the bottom surface of the water receiving tub 3, and the washing / dewatering tub 1 or the stirring blade 2 is driven via a clutch device 5 for switching the drive unit. It is composed. The water receiving tank 3 is supported on the outer shell 6 via a suspension 7 in a vibration-proof manner. A fluid balancer 8 containing a liquid is fixed to an upper portion of the washing and dewatering tub 1, and an upper surface of the water receiving tub 3 is covered by a water receiving tub cover 9.

[0004] The upper portion of the outer shell 6 containing the water receiving tank 3 is covered with an outer cover 13 containing the control device 10, the water supply valve 11, the water supply path 12, and the like. At the approximate center of the outer cover 13, there is a hole through which clothes are taken in and out,
In this hole, the lid 14 is provided so as to be freely opened and closed.

In the above-mentioned construction, in the washing process, the amount of water suitable for the amount of the laundry (eg, clothes) put into the washing / dewatering tub 1 is supplied from the water supply valve 11 through the water supply path 12 to the water receiving tub 3.
To supply. Also, at the time of putting clothes, or at the same time as supplying water, a detergent is put in, and thereafter, stirring by the stirring blade 2 is performed.
Proceed to the process of removing dirt on clothes. At this time, the detergent to be put into the washing and dehydrating tub 1 includes a powder detergent and a liquid detergent. Usually, an appropriate amount is put into the washing and dehydrating tub 1 by using a measuring instrument according to the amount of clothes to be washed each time or the amount of water to be supplied. I do.

[0006]

In such a conventional structure, when washing and measuring a detergent every time in accordance with the amount of clothes or the amount of water supplied during washing, a powder detergent or a liquid detergent can be used. However, there is a problem in the safety at the time of the loading operation such that the container is spilled on the floor or in a place where the control device of the washing machine is provided unless the commercially available containers are brought near the washing machine and then loaded. In addition, there is a problem in handling that the weighing is almost visual, the amount of the input varies, the detergency does not come out, and the detergent is wasted.

[0007] In recent years, fully automatic washing machines that automatically determine the amount of water and automatically advance the washing process are becoming mainstream, and labor saving in housework is progressing. However, there was a disadvantage that the user had to perform measurement and input every time.

[0008] Furthermore, there are concerns about storage such as infants accidentally swallowing the detergent while it is being stored, running out of the container when the liquid detergent is thrown, or falling over the storage and soiling the floor surface.

As described above, in the operation of washing, there has been a problem that only the method of introducing a detergent has not been practically automated or labor-saving.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems. The present invention improves the usability by automatically dispensing a detergent, reduces the operating noise of a detergent dispensing device, reduces the temperature rise, and changes the frequency of a commercial power supply. The aim is also to make the detergent dosage the same.

[0011]

According to the present invention, in order to achieve the above object, a washing and dewatering tub is rotatably disposed in a water receiving tub, and an amount of liquid detergent that can be used for at least two washes is provided. A liquid detergent in an accommodating detergent tank is charged into the washing and dewatering tub by the detergent charging device, and the operation of the detergent charging device is controlled by the control device. The system is configured so as to cut and operate the detergent input device to change the number of cuts per unit time according to the frequency of the commercial power supply.

[0012] Thereby, the detergent can be automatically supplied, and the usability can be improved.
It is possible to reduce the operating noise and temperature rise of the detergent supply device, and to make the amount of detergent supplied the same even when the frequency of the commercial power supply changes.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION
A washing and dewatering tub rotatably disposed in a water receiving tub, a detergent tank capable of storing an amount of liquid detergent usable for at least two washes, and a washing and dehydrating tub for storing the liquid detergent in the detergent tank; And a control unit for controlling the operation of the detergent supply device, wherein the control unit operates the detergent supply device by cutting the commercial power supply in half-wave units, and It is designed to change the number of cuts per unit time according to the frequency, so that the detergent can be automatically introduced, and the detergent is brought into the vicinity of the main body of the washing machine together with the container and then injected. The inconvenience at the time of introduction and the variation in the amount of detergent to be introduced can be eliminated, which can prevent the inconvenience in handling, such as deteriorating the washing power or wasting the detergent, improving the usability and improving the detergent injection. By operating the apparatus by cutting it in half-wave units of the commercial power supply, the number of operations per unit time is reduced, so that the operation sound of the detergent dispensing apparatus can be reduced and the temperature rise can be reduced. By changing the number of cuts per unit time according to the frequency of the power supply, even if the frequency of the commercial power supply changes, the number of operations per unit time can be made equal, and the amount of detergent input can be the same.

According to a second aspect of the present invention, there is provided a washing and dewatering tub rotatably disposed in a water receiving tub, a detergent tank capable of storing an amount of liquid detergent usable for at least two washes,
A detergent input device for inputting a liquid detergent in the detergent tank into the washing and dewatering tub, and a control unit for controlling the operation of the detergent input device, the control unit according to a frequency of a commercial power supply, It is configured to change the operation time of the detergent input device, it is possible to automatically input the detergent, and at the time of detergent input that the detergent is taken and put near the washing machine body together with the container. Inconveniences and variations in the amount of detergent input can be eliminated, resulting in a lack of detergency and wasteful use of detergent.This improves convenience and improves the frequency of commercial power. Accordingly, by changing the operation time of the detergent supply device, the same amount of detergent can be supplied even when the frequency of the commercial power supply changes.

According to a third aspect of the present invention, in accordance with the first or second aspect of the present invention, there are provided voltage detecting means for detecting a voltage of a commercial power supply, and temperature detecting means for detecting an ambient temperature. The operating time of the detergent dispenser is corrected according to the detected voltage and temperature.When the power supply voltage is high or the ambient temperature is high, the amount of detergent input increases, but the power supply voltage By correcting the operation time of the detergent dispensing device according to the temperature and the temperature, the detergent dispensing amount can be made substantially constant even when the power supply voltage and the temperature fluctuate.

According to a fourth aspect of the present invention, in the third aspect of the present invention, a water level detecting means for detecting a water level in the washing and dewatering tub is provided, and the control means operates the detergent feeding device in accordance with the amount of water used. When the amount of water used is large, the operating time of the detergent dispenser is corrected to be longer so that the detergent concentration of the washing liquid can be made substantially constant, and the amount of water used is And a substantially constant washing performance can be obtained.

The invention according to claim 5 is the invention according to claims 1-4.
The invention according to the aspect, further comprising input means for performing input operation,
The control means is configured to correct the operation time of the detergent dispensing device by operating the input means, and it is possible to increase or decrease the amount of detergent by operating the input means in accordance with dirt on the laundry, Usability can be improved.

According to a sixth aspect of the present invention, in the first or the second aspect of the present invention, a liquid detergent discharge port of the detergent tank is provided near the water supply section, and the control means includes: When a predetermined time (for example, 20 seconds) elapses after the water supply of the detergent input device is started, the liquid detergent discharge port and the liquid detergent input path are determined in advance to supply water. The detergent can be charged in a wet state, and the liquid detergent can be prevented from remaining undissolved in the liquid detergent outlet or the charging path. If the detergent injection device is operated at the same time as the water supply is started, the detergent injection device is temporarily stopped after the water supply is started, and when the water is supplied again, the detergent injection device is operated twice, resulting in waste of the detergent. By operating the detergent feeding device after a predetermined time has elapsed since the start of water supply, such a waste of the detergent can be eliminated.

According to a seventh aspect of the present invention, in the first or second aspect of the present invention, a water level detecting means for detecting a water level in the washing and dewatering tub is provided. If the water level is equal to or higher than the predetermined water level, the detergent injection device is not operated.If the water level in the washing and dewatering tub is equal to or higher than the predetermined water level at the start of washing, the operation is only for washing. It is determined that there is washing liquid in the washing and dewatering tub, and the detergent input device is not operated, thereby eliminating waste of the detergent.

[0020] The invention according to claim 8 provides the above-mentioned claim 1,
The invention according to claims 2 and 4, further comprising an input means for performing an input operation, wherein the set water level of the washing and dewatering tub can be changed by the operation of the input means, and the control means inputs the detergent according to the changed water level. When the set water level is changed by operating the input means, the detergent can be added according to the changed water level,
The detergent concentration of the washing liquid can be made substantially constant, so that almost constant washing performance can be obtained regardless of the change in the set water level.

According to a ninth aspect of the present invention, in the invention of the eighth aspect, when the water level setting is changed after the operation of the detergent inputting device is completed, the control means operates the detergent inputting device after the water level setting is changed. Even if the set water level is changed to a higher level than the initial level after the operation of the detergent dispenser, the liquid detergent is injected when the water level is changed. The liquid detergent may remain near the liquid detergent outlet of the tank, but the liquid detergent can be prevented from remaining near the liquid detergent outlet by not operating the detergent charging device after the water level setting is changed.

According to a tenth aspect of the present invention, in accordance with the first or second aspect of the present invention, there is provided a display means for displaying the introduction of the liquid detergent, and the control means is provided before or during operation of the detergent introduction device. The display of the display means is made to blink, and when the display of the display means is blinking,
This indicates that the set water level can be changed, and the set water level can be changed by looking at the display on the display means, thereby improving usability.

According to an eleventh aspect of the present invention, in the first or the second aspect of the present invention, an input means for performing an input operation is provided, and the control means continuously operates the detergent feeding device by operating the input means. Thus, the liquid detergent in the detergent tank can be completely discharged by a simple operation when the detergent tank is cleaned or repaired, and the usability can be improved.

According to a twelfth aspect of the present invention, in the first or the second aspect of the present invention, the control means makes the operation time when the detergent feeding device is operated first longer than the operation time after the second time. When the detergent feeding device is operated for the first time, there is no detergent in the detergent feeding route from the detergent feeding device to the washing and dewatering tub, and thus the feeding amount is not stable. By extending the operation time when the detergent input device is first operated, it is possible to prevent the detergent input amount from decreasing when the detergent is used for the first time.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

(Embodiment 1) As shown in FIG. 1, an outer cover 15 covers an upper part of an outer shell 6, and is provided with a water supply valve 11, a water supply path 12, a control device 16, and the like. In the outer cover 15, a detergent tank 18 containing an amount of liquid detergent 17 that can be used for at least two washes is provided. The detergent charging device 19 is for charging the liquid detergent 17 in the detergent tank 18 into the washing and dewatering tub 1 via the liquid detergent outlet 18a. Here, the liquid detergent outlet 18 a of the detergent tank 18 is provided near the water supply path 12.

The detergent input device 19 is constituted by a plunger-type air pump, and reciprocates the plunger by a current flowing through a coil, thereby operating a diaphragm (neither is shown) to discharge air. And
The operation is controlled by the control device 16. The detergent tank 18 is sealed, and the liquid detergent 17 in the detergent tank 18 is charged into the washing and dewatering tub 1 by feeding air from the detergent charging device 19.

The control device 16 is configured as shown in FIG. 2, and the control means 20 is configured by a microcomputer.
The operation of the water supply valve 11, detergent input device 19, drain valve 22 and the like is controlled, and a series of steps of washing, rinsing, and dewatering are sequentially controlled. The input means 23 is operated by a user to input an instruction, and gives an instruction to the control means 20. The display means 24 controls the control means 2.
A display operation is performed by outputting 0. Non-volatile storage means 25
Is storage means which does not lose its stored contents even if power is not supplied. The water level detecting means 26 detects the water level in the washing and dewatering tub 1, and outputs its output to the control means 20.

As shown in FIG. 3, the input means 23 includes a water level setting switch 23a, a washing time setting switch 23b, a rinsing frequency setting switch 23c, and a dehydration time setting switch 2.
3d, a start / stop switch 23e, a detergent setting switch 23f, a course setting switch 23g, a power-off switch 23h, a power-on switch 23i, and the like. The detergent input setting switch 23f constitutes a switch for selecting whether to input the liquid detergent 17 or not.

The display means 24 is composed of a light emitting diode, and displays a water level display section 24a, a washing time display section 24b, a number of times of rinsing display section 24c, a dehydration time display section 24d, a remaining time, a reservation time, a powder detergent input amount, and the like. Digital display 24e, liquid detergent input display 24f, course display 24
g.

The water level display section 24a displays the amount (cloth amount) of the laundry in the washing and dewatering tub 1 by a cloth amount detecting means (not shown).
Is displayed, and the water level display can be changed by the water level setting switch 23a. The liquid detergent input display section 24f is provided with the power switch 2
When the switch 3i is turned on, the lamp is turned on. In this state, the liquid detergent 17 in an amount corresponding to the result of the cloth amount detection can be automatically supplied.

Further, the control means 20 operates the detergent input device 19 by cutting the commercial power supply 27 in half-wave units. When the frequency of the commercial power supply 27 is 50 Hz, as shown in FIG. Cut the part shown by the broken line to energize at a rate of 1 wave out of 5 waves. When the frequency is 60 Hz,
As shown in FIG. 4B, a portion indicated by a broken line is cut so that current is supplied at a rate of one out of seven waves.

In the above configuration, the detergent tank 18 contains an amount of the liquid detergent 17 that can be used for washing at least twice, and the detergent tank 18 is attached to the outer cover 15, and When the laundry is turned on and the power switch 23i is turned on, the liquid detergent input display unit 2 is turned on.
4f lights up. In this state, when the start / pause switch 23e is turned on to start the operation, after detecting the amount of cloth, the water level display unit 24a displays a water level corresponding to the amount of the laundry in the washing and dewatering tub 1; The water supply valve 11 is turned on to start water supply.

The control device 16 drives the detergent charging device 19 to increase the air pressure in the closed detergent tank 18 to push out the liquid detergent 17 in the detergent tank 18 from the liquid discharge port 18c and to the washing and dewatering tub 1. throw into. As a result, the liquid detergent 1 is changed according to the laundry put into the washing and spin-drying tub 1.
7 is accurately washed from the liquid detergent outlet 18a through the washing and dewatering tub 1
Can be put in.

At this time, the control means 20 controls the commercial power supply 27
And the frequency of the commercial power supply 27 is 50H
In the case of z, power is supplied at a rate of 1 wave out of 5 waves, and in the case of middle water level, it is operated for 13 seconds. , For 14 seconds, even if the frequency of the commercial power source 27 changes,
A predetermined amount of the liquid detergent 17 can be charged for each water level.

Further, since the detergent supply device 19 is operated while being cut in half-wave units of the commercial power supply 27, the number of operations per unit time is reduced, so that the operation sound of the detergent supply device 19 can be reduced and the temperature rise can be reduced. Can be reduced.

Thereafter, the controller 16 controls the operation of the motor 4, the water supply valve 11, the drain valve 22 and the like to sequentially control a series of steps of washing, rinsing, and dehydrating. I do.

After the power switch 23i is turned on and the liquid detergent input display 24f is turned on, the detergent input switch 23f is pressed to turn off the liquid detergent input display 24f.
In this state, when the operation is started by turning on the start / pause switch 23e, the liquid detergent 17 is not automatically supplied after the cloth amount is detected, and the user inputs the powder detergent displayed on the digital display unit 24e. Add the powder detergent according to the amount.

As described above, according to this embodiment, it is necessary to bring the liquid detergent together with the container in the vicinity of the washing machine main body and put it in. Handling problems such as lack of power or wasting of detergent.In addition, children may accidentally swallow the detergent while storing it.For liquid detergent, it may leak from the container when thrown in, or may fall during storage. As a result, it is possible to eliminate the problem of detergent storage such as soiling the floor surface, and to automatically supply the liquid detergent 17 to improve the usability.

Further, by operating the detergent supply device 19 by cutting it in half-wave units of the commercial power supply 27, the number of operations per unit time is reduced, so that the operation sound of the detergent supply device 19 can be reduced and the temperature rises. In addition, by changing the number of cuts per unit time according to the frequency of the commercial power supply 23, the number of operations per unit time can be equalized even when the frequency of the commercial power supply 23 changes, and the detergent The dosage can be the same.

(Embodiment 2) The control means 20 shown in FIG.
The configuration is such that the time for operating the detergent supply device 19 is changed according to the frequency of the commercial power supply 27. That is, the control means 20 cuts the power supply in units of half-waves of
When the frequency of the commercial power supply 27 is 50 Hz, the operation time is 13 seconds, and when the frequency is 60 Hz, the operation time is 7 seconds. And Other configurations are the same as those in the first embodiment.

In the above construction, the detergent tank 18 contains an amount of the liquid detergent 17 that can be used for at least two washes, and the detergent tank 18 is attached to the outer cover 15, and When the laundry is turned on and the power switch 23i is turned on, the liquid detergent input display unit 2 is turned on.
4f lights up. In this state, when the start / pause switch 23e is turned on to start the operation, after detecting the amount of cloth, the water level display unit 24a displays a water level corresponding to the amount of the laundry in the washing and dewatering tub 1; The water supply valve 11 is turned on to start water supply.

The control device 16 drives the detergent input device 19 to increase the air pressure in the closed detergent tank 18 to push out the liquid detergent 17 in the detergent tank 18 from the liquid discharge port 18c and to the washing and dewatering tub 1. throw into. As a result, the liquid detergent 1 is changed according to the laundry put into the washing and spin-drying tub 1.
7 is accurately washed from the liquid detergent outlet 18a through the washing and dewatering tub 1
Can be put in.

At this time, the control means 20 controls the commercial power supply 27
The operation time of the detergent supply device 19 is changed in accordance with the frequency of the liquid detergent 17, so that the supply amount of the liquid detergent 17 can be the same even if the frequency of the commercial power supply 27 changes.

(Embodiment 3) As shown in FIG. 5, the control device 16a includes a control means 2 composed of a microcomputer.
The voltage detecting means 29 detects the voltage of the commercial power supply 27, the temperature detecting means 30 detects the ambient temperature, and outputs the respective outputs to the control means 28.
Is being entered. The control means 28 corrects the operation time of the detergent introduction device 19 according to the detected voltage and temperature. Other configurations are the same as those in the first embodiment.

In the above configuration, when the operation is started, the control means 28 reads the voltage and the temperature from the voltage detecting means 29 and the temperature detecting means 30, respectively. Generally, commercial power supply 27
When the voltage is low, the pump of the detergent input device 19 has a reduced performance, so that the input amount of the liquid detergent 17 is small. Conversely, when the voltage is high, the performance is high, so the input amount of the liquid detergent 17 is large. Become.

When the ambient temperature is low, the viscosity of the liquid detergent 17 increases, and when the ambient temperature is high, the viscosity of the liquid detergent 17 decreases. Therefore, when the detergent input device 19 is operated for a certain period of time, the input amount of the liquid detergent 17 decreases when the temperature is low, and the input amount of the liquid detergent 17 increases when the temperature is high.

Therefore, the control means 28 sets the values in (Table 1) and (Table 2) according to the read voltage and temperature with respect to the reference operation time (for example, 20 seconds at a high water level) according to the amount of water used. As shown in the drawing, by correcting the operation time of the detergent supply device 19 to be longer or shorter, it is possible to reduce the variation in the supply amount of the liquid detergent 17 due to the voltage and the ambient temperature.

[0049]

[Table 1]

[0050]

[Table 2]

As described above, by correcting the operation time of the detergent introduction device 19 according to the detected voltage and the ambient temperature,
Variations in the input amount can be reduced.

(Embodiment 4) The control means 28 shown in FIG.
In accordance with the amount of water used in the washing and dewatering tub 1 detected by the water level detecting means 26, the operation time of the detergent input device 19 corrected in the third embodiment is further corrected.
Other configurations are the same as those of the third embodiment.

In the above arrangement, when the amount of water used for washing is large, the required amount of the liquid detergent 17 is large, and when the amount of water used for washing is small, the required amount of the liquid detergent 17 is small. For example, when the amount of water used is large,
It is necessary to increase the correction according to the voltage and the ambient temperature. Conversely, when the amount of water used is small, it is necessary to reduce the correction according to the voltage and the ambient temperature.

Therefore, as shown in (Table 3), the control means 28 performs a second correction when the amount of used water is large.
When the operation time of the detergent introduction device 19 is lengthened and, on the contrary, the amount of used water is small, the operation time of the detergent introduction device 19 is corrected to be short, so that an appropriate liquid detergent according to the used water amount can be introduced.

[0055]

[Table 3]

The correction coefficients in Table 3 are multiples of the correction times in Tables 1 and 2.

As described above, by correcting the operating time of the detergent introduction device 19 in accordance with the detected voltage and the ambient temperature, and performing the second correction in accordance with the amount of used water, the voltage, the ambient temperature, and the amount of used water are corrected. , The variation in the amount of the liquid detergent 17 introduced can be reduced, the detergent concentration of the washing liquid can be made substantially constant, and almost constant washing performance can be obtained regardless of the amount of water used.

(Embodiment 5) The control means 28 shown in FIG.
By operating the input means 23, the operation time of the detergent input device 19 corrected according to the fourth embodiment is further corrected. That is, the power-on switch 23i is turned on while the detergent input switch 23f is pressed, and the detergent input switch 23f is kept pressed for about 3 seconds to enter the operation time correction mode. Thereafter, the detergent input switch 23f is turned on. Each time the button is pressed, as shown in (Table 4), the correction contents are sequentially switched and displayed on the water level display section 24a.

[0059]

[Table 4]

The correction coefficient in Table 4 is based on the reference operation time (for example, 20 at high water level) depending on the amount of water used.
Second) and a multiple of the sum of the times corrected by the above (Table 1), (Table 2) and (Table 3). Other configurations are the same as those of the third embodiment.

In the above configuration, by operating the input means 23, the operation time of the detergent introduction device 19 can be increased or decreased by the correction coefficients shown in (Table 4). That is, the correction time is corrected by the increase / decrease of the operation time of the detergent input device 19 by operating the input means 23 with respect to the sum of the reference operation time and the time corrected according to the detected voltage, the ambient temperature, and the amount of water used. By doing so, the amount of detergent can be increased or decreased according to the user's will in accordance with the contamination of the laundry, and the usability can be improved.

(Embodiment 6) The control means 20 shown in FIG.
After the start of water supply in the water supply process, a predetermined time (for example, 20
After the elapse of (sec), the detergent input device 19 is operated. Other configurations are the same as those in the first embodiment.

In the above configuration, the operation of the detergent introduction device 19 is delayed for a predetermined time after the water supply valve 11 is turned on, so that the liquid detergent discharge port 18a and the path into which the liquid detergent 17 is introduced are wetted in advance by the water supply. The liquid detergent 17 can be introduced, and the liquid detergent 17 can be supplied through the liquid detergent outlet 18a or the introduction path.
Can be prevented from remaining undissolved.

Further, at the same time as the start of water supply, the detergent injection device 1
9 is temporarily stopped after the start of water supply, and when the water is supplied again, the detergent input device 19 operates twice and waste of the liquid detergent 17 occurs. By operating the detergent input device 19 after the elapse of time, such waste of the liquid detergent 17 can be eliminated.

Further, by disposing the water supply path 12 and the liquid detergent discharge port 18a of the detergent tank 18 close to each other, after the liquid detergent 17 is charged, the liquid detergent discharge port 18a is supplied by water supplied from the water supply path 12. Liquid detergent 17
Is washed out, and it is possible to prevent excess liquid detergent 17 from being thrown into the washing and dewatering tub 1 at the time of rinsing.

In this embodiment, the control means 20 of the first embodiment has been described. However, the control means 28 of the third embodiment can be made the same, and the same operation and effect can be obtained.

(Embodiment 7) The control means 20 shown in FIG.
If the water level in the washing and dewatering tub 1 is equal to or higher than a predetermined water level at the start of washing, the detergent charging device 19 is not operated. Other configurations are the same as those in the first embodiment.

In the above configuration, at the start of washing, the control means 20 reads the water level information from the water level detecting means 26, and when it is detected that water in the washing and dewatering tub 1 has already exceeded the predetermined water level, the control means 20 supplies the detergent. Do not work. In this way, when the washing water has already entered at the start of the washing, such as when the washing is repeated without draining the washing water, it is possible to eliminate the waste of the detergent by not operating the detergent input device 19. it can.

In this embodiment, the control means 20 of the first embodiment has been described. However, the control means 28 of the third embodiment can be made the same, and the same operation and effect can be obtained.

(Embodiment 8) The control means 20 shown in FIG.
When the set water level of the washing and dewatering tub 1 is changed by operating the water level setting switch 23a of the input means 23, the detergent input device 19 is operated according to the changed water level. Other configurations are the same as those in the first embodiment.

In the above configuration, the water level setting switch 23
If the water level setting is changed by pressing a before or during operation of the detergent input device 19, the control means 20 operates the detergent input device 19 for a time corresponding to the changed water level.

For example, the detergent charging device 1 at low water level
9 is 17 seconds, and the operation time of the detergent introduction device 19 at the middle water level is 20 seconds. The low water level was set at the beginning of the operation. Is pressed to change the water level to the middle water level. If the water level setting is changed before or during operation of the detergent input device 19, the control means 20 sets the operation time of the detergent input device 19 to 20 seconds after the change.

In this way, even if the water level setting is changed in the water supply process, the amount of the liquid detergent corresponding to the set water level can be supplied, and the detergent concentration of the washing liquid can be made substantially constant. And a substantially constant washing performance can be obtained.

In this embodiment, the control means 20 of the first embodiment has been described. However, the control means 28 of the third embodiment can be made the same, and the same operation and effect can be obtained.

(Embodiment 9) The control means 20 shown in FIG.
When the set water level of the washing and dewatering tub 1 is changed by operating the water level setting switch 23a of the input means 23 after the operation of the detergent input device 19 is completed, the detergent input device 1 is changed after the water level setting is changed.
9 is not operated. Other configurations are the same as those in the first embodiment.

In the above configuration, when the liquid detergent 17 is introduced after the water level setting is changed, the amount of water supplied thereafter is small, so that the liquid detergent 17 is supplied to the liquid detergent outlet 1 of the detergent tank 18.
8a. Therefore, by not operating the detergent input device after the water level setting is changed, it is possible to prevent the liquid detergent from remaining near the liquid detergent outlet.

In the present embodiment, the control means 20 of the first embodiment has been described. However, the control means 28 of the third embodiment can be made the same, and the same operation and effect can be obtained.

(Embodiment 10) The control means 20 shown in FIG.
Is designed to blink the liquid detergent input display section 24f of the display means before or during operation of the detergent input device 19. Other configurations are the same as those in the first embodiment.

In the above configuration, before or during the operation of the detergent dispenser 19, the liquid detergent dispenser indicator 2 of the display means is displayed.
By blinking 4f, it is possible to notify by flashing of the display that the operation time of the detergent introduction device 19 can be changed according to the water level during the introduction of the liquid detergent 17 or after the water level setting is changed, thereby improving the usability. it can.

In this embodiment, the control means 20 of the first embodiment has been described. However, the control means 28 of the third embodiment can be made the same, and the same operation and effect can be obtained.

(Embodiment 11) The control means 20 shown in FIG.
, The detergent input device 19 is operated continuously by the operation of the input means 23. That is, while the detergent input setting switch 23f is pressed, the power-on switch 2 is turned on.
3i is turned on, and the detergent input setting switch 23f is kept pressed for about 3 seconds.
By pressing, the detergent input device 19 is operated continuously. Other configurations are the same as those in the first embodiment.

In the above configuration, by operating the detergent input setting switch 23f as described above, the liquid detergent 1 is set.
Numeral 7 is continuously put into the washing and dewatering tub 1, and all the liquid detergent 17 in the detergent tank 18 can be discharged.
Thus, the detergent tank 18 is cleaned with water, or the liquid detergent 17 is discharged in advance at the time of repair and inspection, so that the liquid detergent can be prevented from flowing out at the time of repair, and the usability can be improved.

In the present embodiment, the control means 20 of the first embodiment has been described. However, the control means 28 of the third embodiment can be made the same, and the same operation and effect can be obtained.

(Embodiment 12) The nonvolatile storage means 25 shown in FIG. 2 stores the number of times the liquid detergent 17 has been charged. At the time of manufacture, 0 is stored, and 1 is stored if the user has washed and the liquid detergent 17 is supplied once, and 2 is sequentially stored if the liquid detergent 17 is supplied. Remember. The control means 20 sets the operation time when operating the detergent introduction device 19 first longer than the operation time after the second time. Other configurations are the same as those in the first embodiment.

In the above configuration, when the liquid detergent 17 is supplied for the first time, since the path from the detergent tank 18 to the liquid detergent outlet 18a has not yet touched the liquid detergent 17, the liquid detergent 17 is not familiar with the liquid detergent 17 and the amount to be supplied is small. It tends to decrease slightly. However, once the liquid detergent 17 is supplied, a thin film of the liquid detergent 17 remains on the path from the detergent tank 18 to the liquid detergent discharge port 18a, and the liquid detergent 17 becomes compatible with the liquid detergent 17 so that the input amount is stabilized.

Therefore, the control means 20 reads the contents stored in the non-volatile storage means 25, and when the number of times of introduction is 0 (ie, when the liquid detergent 17 is first introduced),
The power supply time to the detergent supply device 19 is made longer by several seconds than when the number of times of supply is one or more. By doing so, the liquid detergent 1
7 can be prevented from decreasing in the first input amount.

In the present embodiment, the control means 20 of the first embodiment has been described. However, the control means 28 of the third embodiment can be made the same, and the same operation and effect can be obtained.

[0088]

As described above, according to the first aspect of the present invention, the washing and dewatering tub rotatably disposed in the water receiving tub and the washing and dewatering tub having an amount usable for at least two washes. A detergent tank capable of storing a liquid detergent, a detergent input device for inputting the liquid detergent in the detergent tank into the washing and dewatering tub, and control means for controlling an operation of the detergent input device; Is configured to operate the detergent input device by cutting in half-wave units of the commercial power supply, and to change the number of cuts per unit time according to the frequency of the commercial power supply, so that the detergent can be automatically supplied. It is possible to improve the usability, and by operating the detergent dispensing device by cutting it in half-wave units of commercial power supply, it is possible to reduce the operating noise of the detergent dispensing device and reduce the temperature rise, Also By varying the number of cut per unit time according to the frequency of the commercial power supply, it changes the frequency of the commercial power source can be the same input amount of the detergent.

According to the second aspect of the present invention, a washing and dewatering tub rotatably disposed in a water receiving tub, and a detergent capable of storing an amount of liquid detergent that can be used for at least two washes. A tank, a detergent input device for inputting a liquid detergent in the detergent tank into the washing and dewatering tub, and control means for controlling the operation of the detergent input device, wherein the control means adjusts the frequency of a commercial power supply. Accordingly, since the operation time of the detergent supply device is changed, the detergent can be supplied automatically, the usability can be improved, and the detergent supply device can be supplied in accordance with the frequency of the commercial power supply. By changing the operation time of the apparatus, the same amount of detergent can be supplied even when the frequency of the commercial power supply changes.

According to the third aspect of the present invention, there are provided voltage detecting means for detecting the voltage of the commercial power supply, and temperature detecting means for detecting the ambient temperature, and the control means controls the detected voltage and temperature. Accordingly, the operation time of the detergent supply device is corrected, so that the supply amount of the detergent can be made substantially constant even when the power supply voltage and the temperature change.

According to the fourth aspect of the present invention, the washing and dewatering tub is provided with a water level detecting means for detecting a water level, and the control means corrects the operation time of the detergent feeding device according to the amount of water used. By doing so, when the amount of water used is large, by correcting the operation time of the detergent injection device to be longer,
The detergent concentration of the washing liquid can be made substantially constant, and almost constant washing performance can be obtained regardless of the amount of water used.

According to the fifth aspect of the present invention, there is provided input means for performing an input operation, and the control means corrects the operation time of the detergent dispenser by operating the input means. The amount of detergent can be increased or decreased according to the contamination of the object, and the usability can be improved.

According to the present invention, the liquid detergent discharge port of the detergent tank is provided near the water supply section, and the control means operates the detergent supply device after the start of water supply in the water supply process. Then, after a predetermined time (for example, 20 seconds) elapses after the water supply is started and the detergent introduction device is operated, the detergent can be introduced in a state in which the liquid detergent outlet and the introduction path of the liquid detergent are wetted by the water supply in advance, It is possible to prevent the liquid detergent from remaining undissolved at the liquid detergent outlet and the charging path.

According to the present invention, the washing and dewatering tub is provided with a water level detecting means for detecting the water level in the washing and dewatering tub. In this case, the detergent input device is not operated, so that waste of the detergent can be eliminated.

According to the invention of claim 8, there is provided input means for performing an input operation, and the set water level of the washing and dewatering tub can be changed by operating the input means. The detergent dispensing device is operated according to the water level, so that even when the set water level is changed, the detergent concentration of the washing liquid can be made substantially constant, and is substantially constant regardless of the change in the set water level. Washing performance can be obtained.

According to the ninth aspect of the present invention, when the water level setting is changed after the operation of the detergent input device is completed, the control means does not operate the detergent input device after the water level setting change. Therefore, even if the set water level is changed higher than the initial level after the operation of the detergent introduction device, the liquid detergent can be prevented from remaining near the liquid detergent outlet.

According to the tenth aspect of the present invention,
Display means for displaying the introduction of the liquid detergent is provided, and the control means blinks the display of the display means before or during operation of the detergent introduction device. It can be changed and usability can be improved.

According to the eleventh aspect of the present invention,
An input means for performing an input operation is provided, and the control means continuously operates the detergent introduction device by the operation of the input means. All of the liquid detergent in the tank can be discharged, and the usability can be improved.

According to the twelfth aspect of the present invention,
Since the control means sets the operation time when the detergent input device is operated for the first time longer than the operation time for the second and subsequent operations, it is possible to prevent the amount of the detergent input from decreasing when used for the first time.

[Brief description of the drawings]

FIG. 1 is a sectional view of a washing machine according to a first embodiment of the present invention.

FIG. 2 is a block circuit diagram of the washing machine.

FIG. 3 is an enlarged front view of an operation display unit of the washing machine.

FIG. 4 (a) is a waveform diagram of a voltage applied to the detergent injection device when the frequency of the washing machine is 50 Hz. FIG. 4 (b) is a waveform diagram of a voltage applied to the detergent injection device when the frequency of the washing machine is 60 Hz.

FIG. 5 is a block circuit diagram of a washing machine according to a third embodiment of the present invention.

FIG. 6 is a sectional view of a conventional washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing and dewatering tank 3 Water receiving tank 17 Liquid detergent 18 Detergent tank 19 Detergent charging device 20 Control means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisashi Hagiwara 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. LB22 LB30 LC15 MA01 MA05 MA09 MA10

Claims (12)

[Claims] 1. A washing and dewatering tub rotatably disposed in a water receiving tub, a detergent tank capable of storing an amount of liquid detergent usable for at least two washes, and a liquid detergent in the detergent tank. A detergent input device for inputting into the washing and dewatering tub; and control means for controlling operation of the detergent input device, wherein the control device operates the detergent input device by cutting in units of half-waves of a commercial power supply. A washing machine configured to change the number of cuts per unit time according to the frequency of a commercial power supply. 2. A washing and dewatering tub rotatably disposed in a water receiving tub, a detergent tank capable of storing an amount of liquid detergent usable for at least two washes, and a liquid detergent in the detergent tank. A detergent charging device for charging the washing and dewatering tub; and control means for controlling an operation of the detergent charging device, wherein the control device operates the detergent charging device in accordance with a frequency of a commercial power supply. Washing machine configured to change. 3. A system comprising: a voltage detecting means for detecting a voltage of a commercial power supply; and a temperature detecting means for detecting an ambient temperature, wherein the control means corrects an operation time of the detergent supply device in accordance with the detected voltage and temperature. The washing machine according to claim 1 or 2, wherein the washing is performed. 4. The washing machine according to claim 3, further comprising a water level detecting means for detecting a water level in the washing and dewatering tub, and wherein the control means corrects the operation time of the detergent input device according to the amount of water used. 5. The laundry according to claim 1, further comprising an input unit for performing an input operation, wherein the control unit corrects an operation time of the detergent dispenser by operating the input unit. Machine. 6. The washing machine according to claim 1, wherein a liquid detergent discharge port of the detergent tank is provided near the water supply section, and the control means operates the detergent introduction device after water supply is started in a water supply process. 7. A water level detecting means for detecting a water level in the washing and dewatering tub, wherein the control means does not operate the detergent dispenser if the water level in the washing and dewatering tub is equal to or higher than a predetermined water level at the start of washing. The washing machine according to claim 1 or 2, wherein 8. An input means for performing an input operation, wherein the set water level of the washing and dewatering tub can be changed by operating the input means, and the control means operates the detergent dispenser in accordance with the changed water level. The washing machine according to any one of claims 1, 2, and 4, wherein the washing machine is operated. 9. The washing machine according to claim 8, wherein when the water level setting is changed after the operation of the detergent dispenser, the control means does not operate the detergent dispenser after the water level setting is changed. 10. The apparatus according to claim 1, further comprising display means for displaying the introduction of the liquid detergent, wherein the control means blinks the display of the display means before or during operation of the detergent introduction device.
Or the washing machine according to 2. 11. The washing machine according to claim 1, further comprising an input unit for performing an input operation, wherein the control unit operates the detergent input device continuously by operating the input unit. 12. The washing machine according to claim 1, wherein the control means sets the operation time when the detergent introduction device is operated first longer than the operation time after the second time.