JPS61162980A - Dehydration washing machine with drain pump - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dehydrating washing machine with a drain pump for use in general households.

In conventional washing machines equipped with a drain pump, when entering the spin-drying process after the draining process after washing, the washing water containing a large amount of detergent comes out of the clothes all at once at the beginning of spin-drying. Rotation causes agitation and foams. Therefore,
Air force entered the pump chamber, significantly reducing the drainage capacity, and a large amount of washing water remained in the water tank, causing poor drainage, motor heat generation, abnormal noises, etc. In order to solve this problem, some attempts have been made to reduce the amount of water used and the time required by performing intermittent dehydration immediately after the washing process is completed and suppressing the foaming of the detergent.

Problems to be Solved by the Invention However, when the depth of the washing tub is increased in order to increase the washing capacity of a washing machine with a drain pump that performs intermittent dewatering, the height difference between the bottom of the washing tub and the drain pump becomes smaller, and the washing tub This is because the flexible drain hose that connects the bottom to the drain pump becomes slack.

Air pockets were likely to form inside the drainage pump room, leading to a decrease in the performance of the drainage pump.

In addition, even in the latter stages of the dehydration process, water that gradually comes out of the clothes circulates inside the outer tank without being drained, which can cause unpleasant noises and increase the temperature of the motor. - In view of these problems, the present invention aims to prevent the dehydration capacity from decreasing due to air entering the drain pump chamber during the dewatering process of a dehydrating washing machine equipped with a drain pump, and to perform the original operation without any hindrance. There's something to do.

Means for Solving the Problems In the dehydrating washing machine with a drain pump of the present invention, the control unit intermittently operates the motor for dehydrating and driving the washing tub at the beginning of the dehydrating process after washing or rinsing, and also operates the drain pump. It operates intermittently.

Function According to the above configuration, by intermittently operating the drain pump, water flows back into the drain pump when it is stopped, and the air pockets formed inside the drain pump are vented, allowing the drain pump to operate smoothly. It is.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

In FIG. 1, a dewatering/washing tub 2 and a stirring blade 3 are disposed inside an outer tub 1 for storing washing water. A dehydrating/washing switching mechanism section 4 is located at the lower end of this dehydrating/washing tub and stirring blade 3.
is stuck. Torque is transmitted to this dehydration/washing switching mechanism 4 from a motor 6 via a V-belt 6.
The upper end of this motor 5 and the dehydration/washing switching mechanism section 4 are connected to the body 8.
'vc supported vibration isolator 7. A body lid 9 is arranged at the upper opening of the body 8, and an operation panel 10 is provided at the rear of the upper part.

A drain pump 11 is attached to the bottom of the body 8, and is connected to the outer tank 1 by a detachable internal drain hose 12. Also.

On the drainage side of the drainage pump 11, there is an external drainage hose 13.
is the installation.

Next, the control section of the dehydrating washing machine with a drain pump according to the present invention will be explained with reference to FIG.

In the same figure, a noise prevention capacitor 1 is connected in parallel with an AC power supply 14.
5, a motor 5, a drain pump 11, a water supply valve 20, a solenoid, and a control circuit 16 are connected, and the control circuit 16 using a microcomputer is connected to an input display device 17 provided on the operation panel 10. Drain pump 11
, a triac 19° 21.23 is connected in series to the water supply valve 20° and the solenoid, and triacs 1aa and 1sb are connected to two branched wiring to the motor 6, and a capacitor 24 for motor operation is connected to the motor 6. is provided. Each triac 18a.

18b, 19.21. 23 is connected so as to be driven by the control signal output section of the control circuit 16.

According to the above configuration, during washing, the control circuit 16 drives the triacs 1sa and 18b from the control signal output section in response to an input signal from the input display device 17, thereby driving the motor 6. Then, the stirring blades 3 are rotated to wash the clothes. After washing, the control circuit 16 switches the triacs 1B&, 1
8b is stopped, the motor 5 is stopped, and then the tria motor 5 is stopped.
The pump 19 is driven to operate the drainage pump 11. When the draining is completed, the control circuit 16 stops driving the trier and hook 19, stops the operation of the drain pump 11, and also drives the trier and hook 23 to operate the solenoid, and sets the dehydration/washing switching mechanism 4 to the dewatering side. Switch. and motor 5
As shown in FIG. 3, the operation is performed intermittently at the beginning, and the rotational speed of the dewatering/washing tub 2 is gradually increased. At this time, every few cycles of intermittent operation of the motor 5, the operation of the drain pump 11 is temporarily stopped along with the motor operation stop VC. As a result, the washing water flowing in the outside drain hose 13 flows back into the pump casing to perform an air venting action. on the other hand,
When the drain pump 11 is not operating, the motor 6 is also not operating, and when the pump 11 in the outer tank 1 is operating at VC, the washing water is always drained.

Next, during regular spin-drying, the spin speed increases and the washing water is gradually squeezed out of the clothes, so when the amount increases to a certain extent, the washing water begins to circulate inside the outer tub, causing unpleasant sensations. This generates noise, and this resistance also prevents the spin speed from increasing. At this time, if the pump is rotating with air in it, the pump will not have the drainage capacity and the situation described above will occur, so stop the pump operation once as in the case of intermittent dewatering.
Water can be drained quickly by priming water.

At this time, if the motor 5 is also stopped at the same time, the effect will be higher, but since the dewatering rotation speed is originally high, the difference in effect is slight.

Effects of the Invention As described above, according to the present invention, even if air enters the washing/dehydration tank drive pipe at the beginning of the dehydration process after washing or rinsing, it is possible to prevent drainage abnormalities, etc., and resume normal operation. It can be done without any problem.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a dehydrating washing machine with a drain pump according to an embodiment of the present invention, FIG. 2 is a configuration diagram of the control section, and FIG. 3 is a timing chart of the control section. 1...Outer tank, 2...Dehydration/washing tub, 3
... Stirring blade, 6 ... Motor, 11 ...
... Drain pump, 12 ... In-machine drainage hose, 16 ... Control circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure @2 figure

Claims (3)

[Claims] (1) During the dewatering process, the dewatering/washing tub and agitation blade installed inside the outer tank that stores washing water, the drain hose that connects the outer tank and the drain pump, and the motor that drives the dehydrating/washing tub A dehydrating washing machine with a drain pump, comprising: a control section that controls the drain pump to operate intermittently at the beginning of the process, and also controls the drain pump to operate intermittently. (2) The control unit stops the operation of the drainage pump when the motor is not energized during intermittent operation, and repeats the operation stop of the drainage pump once every time the motor performs intermittent operation several times. A dehydrating washing machine with a drain pump as described in item 1. (3) The dehydrating washing machine with a drain pump according to claim 1, wherein the control section intermittently stops the drain pump during continuous dewatering in the latter half of the dewatering process.