JPH0679639B2 - Washing machine - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a washing machine capable of handling not only soiling of laundry but also soiling of a tub.

[Technical background of the invention and its problems] It has been conventionally known that, in this type of washing machine, dirt and soap residue generated by washing laundry is attached to the tub. Is usually in the hands of the user. However, in the case where the user only has to wash it by hand like this, there is a problem in that it is troublesome to use and tends to be left unattended for a long time. If the above-mentioned dirt or soap residue adheres to not only the inner surface but also the outer surface and the inner surface of the tub containing the tank, which is inaccessible to the user, the cleaning cannot be performed as desired. I had a problem.

In contrast to the above, there is an idea to wash the tub with an ordinary laundry course as shown in JP-A-59-71399, but the laundry course is designed to wash the laundry. Therefore, it is not suitable for cleaning the tank, and there is a problem that the tank cannot be effectively cleaned.

[Object of the Invention] The present invention has been made in view of the above circumstances, and therefore an object thereof is to provide a washing machine capable of effectively cleaning a tub.

[Summary of the Invention] The present invention separates from "washing water", "stirring",
Combining the steps of "drainage" and "dehydration", and with a tank washing course to wash the tank by running the operation of rotating the tank while leaving water inside the tank to dehydrate, It is designed to be carried out, and is characterized in that the bath can be cleaned by a dedicated course.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. First of all, in FIG. 2, reference numeral 1 is an outer box of the washing machine which also serves as a dehydrating machine, and a tub 2 for receiving a water therein.
Is elastically supported by an elastic suspension mechanism 3, and a tub 5 for washing / dewatering having a large number of dehydration holes 4 is rotatably supported inside the tub 2. Reference numeral 6 is a stirring blade disposed substantially in the center of the inner bottom of the tank 5, and 7 is a drive mechanism mainly including a motor 8 for selectively rotating the stirring blade 6 and the tank 5.
Further, 9 is a drain hose for draining from the trough 2 and further from the tank 5, and 10 is a drain valve. On the other hand, 11 is an upper lid attached to the outer case 1, and an operation panel section 12 is formed on the rear side of the upper lid, and the operation panel section 12 houses the control device 13 shown in FIG. ing. Here, the control device 13 is mainly composed mainly of a microcomputer, its input terminal is connected to, for example, a course selection switch 14 provided on the upper surface of the operation panel section 12, and the output terminal is connected to the motor. 8 and the drain valve 10 are connected, and the water supply valve 15 and the indicator lamp 16 provided in the operation panel portion 12 in the form of supplying water into the tank 5 are connected. Thus, the above-mentioned course selection switch 14
In addition to the pushbutton switches 17 and 18 for the "standard course" and the "saving course", that is, the ordinary washing course, the pushbutton switch 19 for the "wash only course" and the "tank washing course"
There is a push button switch 20 for the "standard course", and when the control device 13 receives an input signal from the push button switch 17 for the "standard course", the controller 13 carries out the operation shown in FIG.
When an input signal is received from the push button switch 18 for the vehicle, the operation shown in FIG. 5 is performed. When an input signal is received from the push-button switch 19 for the "wash only course", only the first "water supply" and "wash" steps of the "standard course" shown in Fig. 4 are performed, and the "bath washing course" When the input signal is received from the push button switch 20 for the vehicle, the operation shown in FIG. 1 is performed.

Therefore, when the user now launders the laundry, washing the "standard course" and operating the pushbutton switch 17 for the "standard course", the control device 13 causes the input signal from the pushbutton switch 17 for the "standard course". The "standard course" shown in FIG. 4 is executed on the basis of receiving the water. Therefore, the water is supplied into the tank 5 by first opening the water supply valve 15.
The "water supply" step for [minutes] is performed, and then the stirring blade 6 is rotated by activating the motor 8 to stir the laundry with the wash water in the tub 5 and the "washing" step for 10 minutes. After that, the drain valve 10 is opened to drain the water from the tank 5 and the trough 3 for 2 minutes, and then the motor 8 is started with the drain valve 10 opened. By doing so, a "dehydration" step is performed for 2 [minutes] in which the tank 5 is rotated and dehydrated. Then, after that, the same "water supply" process as the above "water supply" process is carried out, and thereafter, the same as the above "washing" process except that the detergent is not used and the time is shortened to 2 minutes. The "rinsing" step of the content is performed, and thereafter, the "drainage" step and the "dewatering" step of the same content as the above-mentioned "drainage" step are performed sequentially. Then, the subsequent "water supply", "rinsing" and "drainage" steps have exactly the same contents as described above, and the last "dehydration" step takes 5 hours.
The operation is the same as that of the above-mentioned "dehydration" process except that the time is extended to [minutes], and the time required until the end is about 38 [minutes] in total.

On the other hand, when the user selects the "saving course" and operates the push button switch 18 for the "saving course", the controller 13 receives the input signal from the push button switch 18 for the "saving course". The "saving course" shown in Fig. 5 is executed. In this "saving course", the operation is basically the same as the above "standard course", but after the first "water supply" step In the "washing" process, the time is shortened to 5 minutes, and after each of the "drainage" and "dehydration" processes, "water supply", "rinsing",
Each cycle of "drainage" and "dehydration" is carried out, but the "rinsing" cycle is extended to 3 minutes.
On the other hand, the final "dehydration" process is performed by shortening the time to 3 [minutes], and the total time required to complete the process is about 23 [minutes].

On the other hand, if the user selects "wash only course" and operates the push button switch 19 for "wash only course", the control device
13 executes the "wash only course" on the basis of the input signal from the push button switch 19 for the "wash only course". Although not shown in this "wash only course", as described above. First "water supply" of "standard course"
Operate only the stroke and the "wash" stroke.

And in response to the above, the user selects the "tank washing course" after performing several times of washing as described above in the washing machine, or after using the washing machine for several days. When the push button switch 20 is operated, the control device 13 executes the "bath washing course" shown in FIG. 1 based on the input signal from the push button switch 20 for the "bath washing course". In the "washing course", first "water supply"
The process is performed with exactly the same contents as the "water supply" process in the "standard course" and the like, and then the "washing" process ("stirring" process) is shortened to 2 [minutes]. Then, after that, the drain valve 10 is opened to drain the water from the tank 5 and the trough 2, and when the water level in the tank 5 has dropped to a certain extent, the motor 8 is started to rotate the tank 5 for dehydration. "Drainage and dehydration" step is performed, and then the water supply valve 15 is opened to supply water into the tank 5 and the motor 8 is started to rotate the tank 5 for dehydration.
Perform a "water supply dehydration" process for 0.5 [minutes]. After this, the same "water supply" process as the "water supply" process in the "standard course" etc. is performed again, and then the "standard course" is performed.
The same "rinse" process ("stirring" process) as in the "rinse" process is shortened to 0.5 [minutes], and the same "drainage and dehydration" process is performed. The same procedure as the “water supply dehydration” process and the “water supply dehydration” process are performed in sequence, and finally the same “dehydration” process as the “dehydration” process in the “standard course” etc. The time required to complete the process is about 13 [minutes] in total. still,
Regarding the execution of this "tank washing course", for example, by using a bleaching agent, not only dirt and soap residue can be removed but also a bactericidal effect can be obtained.

As described above, according to this embodiment, the tub 5 can be washed by the "tank washing course", and the "tank washing course" is a washing course for washing the laundry, that is, a "standard course".
Since it is a course dedicated to washing the tub, which is provided separately from the "saving course", etc., it can wash the tub 5 very effectively, unlike the one using the washing course, and of course, Desired cleaning can be performed without bothering the user's hand and cleaning the outer surface of the tank 5 and the inner surface of the trough 2 which cannot be reached by the user.

Also, especially in this case, by setting the time until the end of the "tank washing course" to be shorter than that of a normal washing course called "standard course" or "saving course", it is possible to suppress power consumption to a low level. Also, the waste of time can be reduced. Further, in the "tank washing course", by performing the "drainage dehydration" step of rotating the tank 5 while leaving water inside the tank 5 and performing dehydration, the outer surface of the tank 5 and the inner surface of the tub 2 are removed. Has the advantage that it can be more effectively washed with water that is vigorously jetted from the tank 5, and in this case, the "water supply and dehydration" step of rotating the tank 5 while supplying water to the inside of the tank 5 and dehydrating it. By doing so, there is an advantage that the outer surface of the tank 5 and the inner surface of the tub 2 can be cleaned more effectively by the water jetted vigorously from the tank 5, especially the clean water.

Here, FIG. 6 shows a washing machine of a type different from the above-mentioned washing machine. If only the difference is described, in particular, in the tub 21 instead of the tub 5 described above, the stirring blade 6 is replaced. In this case, the tank 21 has a large number of dehydration holes 23 in the upper half and communicates with the tub 2 through the dehydration holes 23. Therefore, the above tank 5
Similarly, not only the inner surface of the tank 21 but also the inner surface of the tub 2 and the inner surface of the tub 2, in particular, the parts near the water surface, have a problem that dirt and soap residue are attached, so that they can be effectively removed by the "tank washing course" described above. By doing so, the same effect as described above can be obtained.

In addition, the present invention is not limited to, for example, a combined washing machine for dehydration, and can be similarly applied to a two-tub type washing machine in which dirt and soap residue adhere only to the inner surface of the tub, or a single washing machine.

[Effects of the Invention] As is clear from the above description, according to the present invention, the processes of "water supply", "stirring", "drainage", and "dehydration" are combined separately from the washing course, and An excellent effect that the bath can be easily and desirably and effectively achieved by a bath-dedicated course provided for the purpose of rotating and dehydrating the bath while leaving water inside the bath It is a thing.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a diagram showing the operation contents of a "bath washing course", and FIG. 2 is a vertical sectional side view of the entire washing machine. FIG. 3 is a block diagram showing the electrical configuration, FIG. 4 is a diagram showing the operation contents of the “standard course” of the laundry course, and FIG. 5 is a diagram showing the operation contents of the “saving course”. Is. Further, FIG. 6 is a vertical sectional side view showing a washing machine of a type different from the washing machine shown in FIG. In the figure, 5 is a tank, 8 is a motor, 10 is a drain valve, 13 is a controller, 14 is a course selection switch, 15 is a water supply valve, 17 is a push button switch for "standard course", 18 is for "saving course" Pushbutton switch, 20 is a pushbutton switch for "tank washing course",
21 indicates a tank.

Claims (1)

[Claims] 1. A control device is provided, and a laundry course for washing laundry is executed by the control device. In addition to the laundry course, "water supply", "stirring",
A combination of the steps of "drainage" and "dehydration" is provided, and a tank washing course is provided to perform the operation of rotating the tank while leaving water inside the tank to perform dehydration. A washing machine characterized by the above.