JPH09290090A - Twin tube washing machine with pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a discharge pump from continuing the revolving operation thereof, even upon the negligence of closing a spinning-basket cover, and raise the degree of power saving and safety, regarding the pump-mounted twin tub washing machine where the operation of a discharge pump communicated to a spin-drying tub is controlled with a spin-drying timer switch. SOLUTION: A spin-drying motor 5 is connected to a spinning-basket rotatably mounted in a spin-drying tub, and the operation of both of the spin- drying motor 5 and a discharge pump 7 communicated to the spin-drying tub is controlled with a spin-drying timer switch 18. Also, the timer switch 18 is connected to a power supply 25 via a power switch and this power switch has a function of turning off contacts 24a and 24b automatically, upon the completion of all processes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-tank washing machine with a pump for controlling the operation of a drainage pump communicating with a dehydration tank by a dehydration time switch.

[0002]

2. Description of the Related Art Conventionally, a two-tub type washing machine with a pump of this type has been constructed as shown in FIGS. Less than,
The configuration will be described.

As shown in FIG. 3, the dehydration tank 1a has a dehydration basket 2 therein, and the dehydration basket 2 has a coupling 3
And a dehydration motor 5 via a brake wheel 4. The cock frame 6 is a frame body 6 having a packing (not shown) that controls drainage of the washing tub 1b.
a and a pipe portion 6b communicating with the dehydration tank 1a. The drainage pump 7 communicates with the cock frame 6 via a suction hose 8, and an internal drainage hose 9 and an external drainage hose 10 enable drainage to a high position.

The washing machine main body 11 includes a dehydration tub 1a and a washing tub 1
In addition, b is installed, the underframe 12 is provided at the bottom, the operation box 13 is provided at the top, and the drainage switching knob 1 is provided on the operation box 13.
4 are provided. Further, the operation box 13 is equipped with a washing time switch 15, a changeover switch 16, a buzzer 17, a dehydration time switch 18 and the like shown in FIG.

The washing time switch 15 controls the buzzer 17 and the washing motor 19. Changeover switch 16
Interlocks with the drainage switching knob 14, and when the drainage switching knob 14 is switched to "washing", the contact 16a side conducts, and when switching to "rinsing" and "drainage", the contact 16
The b side conducts. When switched to “drainage”, the drain cock opens and the washing water in the washing tub 7 is drained by the drainage pump 7.

The dehydration time switch 18 controls the dehydration motor 5. A dehydration lid 20 is provided on the upper part of the dehydration tank 1a so as to be openable and closable, and a lid switch 21 for interlocking with the dehydration lid 20 to turn on and off contacts is provided. This lid switch 21
When the dehydration lid 20 is open, the contact 21a side is conductive, and when it is closed, the contact 21b side is conductive. The drainage pump 7 is controlled by the changeover switch 16, the dehydration time switch 18 and the lid switch 21, and drains the washing liquid in the dehydration tub 1a. The current fuse 22 protects the entire washing machine, and the current fuse 23 protects the drainage pump 6.

The operation of the above structure will be described. First, at the time of washing, the washing time switch 15 controls the washing motor 19 to wash. Next, the drainage switching knob 14 is operated to drain the water. As a result, the packing (not shown) of the cock frame 6 is opened, the washing liquid in the washing tub 7 is drained, at the same time the contact 16b of the changeover switch 16 is closed, the drainage pump 7 is rotated, and the washing tub 1b is rotated.
Drain the washing liquid inside.

Next, when the drainage switching knob 14 is switched to "washing" and the dehydration lid 20 is opened, the lid switch 2
The contact 21a of No. 1 is closed, the drainage pump 7 is rotated, and drainage of the washing liquid in the dehydration tub 1a is started. Then, the dehydration time switch 18 is turned on and the dehydration motor 5 is rotated to dehydrate. As is clear from the circuit of FIG. 4, the dehydration lid 2
As long as 0 is open and the contact 21a of the lid switch 21 is closed, current flows through the circuit indicated by arrow A, and the drainage pump 7 continues to rotate.

Now, the reason why the drainage pump 7 is rotated at the same time when the dehydration lid 20 is opened will be described. When the laundry is finished and dehydrated, the dehydration lid 20
Open and put the laundry in the dehydration basket 2. At that time, the drainage pump 7 is rotated by opening the dehydration lid 20, and the laundry liquid in the dehydration tank 1a is sequentially drained while the laundry is being put into the dehydration basket 2. Therefore, even if a large amount of the washing liquid contained in the laundry is drained at one time during the next dehydration process, the drainage pump 7 drains the washing liquid in the dehydration tub 1 in advance, so that the dehydration basket 2 It rotates smoothly and can be dehydrated.

However, if laundry is put into the dehydration basket 2 without rotating the drainage pump 7 in conjunction with the dehydration lid 20, the washing liquid discharged at the time of addition is collected in the dehydration tub 1a. When the dewatering operation is started in this state, the rotating dewatering basket 2 stirs the washing liquid accumulated in the dewatering tub 1a, and a large amount of foam is generated in the dewatering tub 1a by the detergent component contained in the washing liquid. . Due to the influence of the bubbles, the rotation of the dehydration basket 2 is hindered, resulting in poor dehydration. When the amount of bubbles further increases, the dehydration motor 5 may be locked and abnormally heated.

For the above reason, the drainage pump 7 is always rotated during dehydration so that the washing liquid is not stored in the dehydration tank 1a. That is, the drainage pump 7 is rotated at the same time when the dehydration lid 20 is opened to drain the washing liquid in the dehydration tub 1a.

[0012]

In such a conventional structure, when the dehydration lid 20 is opened, the drainage pump 7 rotates, and as long as the dehydration lid 20 is open, the rotation continues. Therefore, the dehydration is completed and the laundry is washed. If the dehydration lid 20 is left open after taking it out, the drainage pump 7 will continue to rotate, which not only wastes electric power, but also causes all time switches to be off. However, there was a problem that the drainage pump 7 was rotating.

The present invention is intended to solve the above problems, and it is an object of the present invention to prevent the drainage pump from continuing to rotate even if the dehydrating lid is forgotten to be closed, thereby improving power saving and safety.

[0014]

In the two-tub type washing machine with a pump of the present invention, a dehydration motor is connected to a dehydration basket rotatably installed in the dehydration tub, and the dehydration motor and the dehydration tub are connected to each other. The operation of the drainage pump is controlled by the dehydration time switch, and this dehydration time switch is connected to the power source through the power switch, and the power switch has a function of automatically turning off the contact after all the operations are completed. .

Thus, even if the user forgets to close the dehydration lid, the power switch can be turned off to prevent continuous rotation of the drainage pump, and power saving and safety can be improved.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention comprises a dehydration tank in which a dehydration basket is rotatably mounted, a dehydration motor connected to the dehydration basket, and a drainage pump communicating with the dehydration tank. A dehydration time switch for controlling the operation of the dehydration motor and the drainage pump, the dehydration time switch is connected to a power source through a power switch, and the power switch automatically turns off the contact after all the operations are completed. When the dehydration time switch is turned off, the power switch is automatically turned off and all the operations of the aircraft are stopped. With this, it is possible to prevent continuous rotation of the drainage pump due to forgetting to close the dehydration lid,
Power saving and safety can be improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in the figure, the power switch 24 has contacts 24a and 24b.
The dehydration time switch 18 is connected to the power supply 25 via the. The detection unit 26 detects the voltage of the dehydration motor 5, inputs its output to the control unit 28 via the timer unit 27, and after the dehydration motor 5 stops operating, the timer unit 27 is operated for a predetermined time (for example, After 10 minutes), the contacts 24a and 24b are turned off. When the dehydration motor 5 is operated before the elapse of a predetermined time, the timer unit 27 is reset. Other configurations are the same as the conventional example.

To explain the operation of the above construction, first, in the washing process, the washing time switch 15 controls the washing motor 19 to perform washing, and at the end of washing, the buzzer 17 notifies the end. Next, when the drainage switching knob 14 is switched to "drainage", the drainage cock is opened, the contact 16b of the changeover switch 16 is closed, and the drainage pump 7 rotates to drain the washing liquid in the washing tub 1b. After the drainage is finished, "wash" the drainage switch knob 14.
To the contact 16a of the changeover switch 16
Is closed, and the drain cock is closed at the same time as the operation of the drain pump 7 is stopped.

Next, the laundry is transferred to the dehydration basket 2 and intermediate dehydration is performed. At this time, the dehydration time switch 1 is operated by closing the dehydration lid 20 and operating the dehydration time switch 18.
The contact 8 is closed, the contact 21b of the lid switch 21 is closed, the drainage pump 7 is rotated, and at the same time the dehydration motor 5 is rotated to perform dehydration.

At the time of rinsing, by switching the drainage switching knob 14 to "rinse", the contact 16b of the changeover switch 16 is closed, and the washing motor 19 can be rotated and rinsed while the drainage pump 7 is being rotated.
Here, the timer unit 27 starts timing after the intermediate dehydration, but since the rinsing time is shorter than the predetermined time (10 minutes),
The power switch 24 does not turn off.

At the final dehydration after rinsing, the dehydration lid 20 is first opened and the laundry is put into the dehydration basket 2 as in the intermediate dehydration. At this time, the contact 21a of the lid switch 21 is closed, and the drainage pump 7 is rotated to drain the washing water discharged when the laundry is put into the dehydration basket 2. Next, the dehydration lid 2
By closing 0, the contact 21a of the lid switch 21 opens, the contact 21b closes, and the drainage pump 7 stops. Then, when the dehydration time switch 18 is operated to dehydrate, the dehydration motor 5 and the drainage pump 7 rotate, and drainage is performed while dehydrating.

After a predetermined time for dehydration, the contact of the dehydration time switch 18 is turned off, and the dehydration motor 5 and the drainage pump 7 are stopped. Next, the dehydration lid 20 is opened to take out the laundry. Thereby, the contact 2 of the lid switch 21
1b opens, the contact 21a closes, and the drainage pump 7 rotates. Next, when the laundry is taken out and the dewatering lid 20 is closed, the drainage pump 7 is stopped and a series of operations is completed. At this time, if the dehydration lid 20 is left open, the drainage pump 7 continues to rotate.

[0024] A predetermined time (1
After 0 minutes), the power switch 24 automatically contacts the contact 2
4a and 24b are turned off, the entire machine is turned off, the drainage pump 7 is also turned off, continuous rotation of the drainage pump 7 can be prevented, and power saving and safety can be improved.

[0025]

As described above, according to the invention described in claim 1 of the present invention, a dehydration tank having a dehydration basket rotatably mounted therein,
A dehydration motor connected to the dehydration basket, a drainage pump communicating with the dehydration tank, and a dehydration time switch for controlling the operations of the dehydration motor and the drainage pump are provided, and the dehydration time switch is turned on via a power switch to be a power source. Since it has a function to connect and automatically turn off the contact after all operations are completed in the power switch, even if you forget to close the dehydration lid, it is possible to prevent continuous rotation of the drainage pump,
Power saving and safety can be improved.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of a two-tub type washing machine with a pump according to the present invention.

FIG. 2 is a sectional view of the two-tub washing machine with the pump.

FIG. 3 is a sectional view of a conventional two-tub type washing machine with a pump.

FIG. 4 is a block circuit diagram of the two-tub type washing machine with the pump.

[Explanation of symbols]

 1 dehydration tank 2 dehydration basket 5 dehydration motor 7 drainage pump 18 dehydration time switch 24 power switch 24a contact point 24b contact point 25 power source

Claims (1)

[Claims] 1. A dehydration tank in which a dehydration basket is rotatably mounted, a dehydration motor connected to the dehydration basket, a drainage pump communicating with the dehydration tank, and a dehydration time for controlling the operations of the dehydration motor and the drainage pump. A two-tank washing machine with a pump, comprising a switch, and the dehydration time switch is connected to a power source through a power switch, and the power switch has a function of automatically turning off a contact point after all operations are completed.