JP2594581B2 - Control device for fully automatic washing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a fully automatic washing machine for washing household clothes and the like.

2. Description of the Related Art Conventionally, in a control device of a washing machine, a so-called autocourse in which a water level is set to an extremely small water level and a motor current at the time of stirring is measured to determine a cloth amount has been programmed. An embodiment of the program is shown in FIG. First, set the water level to a minimum 21 and when this water level is reached,
The stirring blade is rotated and the motor current for driving the stirring blade is measured to detect the load (24). The water level, the washing time, the reversal time, and the like have been reset according to the load amount obtained by this detection.

Problems to be Solved by the Invention In the conventional configuration as described above, when washing a wool sweater, by stirring with a minimum or a small amount, problems such as damage to the wool and loss of shape are caused. there were.

The object of the present invention is to solve the above problems, and when washing wool or lingerie, provide a special program for supplying sufficient water from the beginning to the washing tub and judging the amount of cloth at this water level. It is intended to utilize.

Means for Solving the Problems In order to achieve the above object, in the present invention, washing, rinsing,
A control circuit for controlling each step of dehydration, a setting circuit connected to the control circuit for setting the type of laundry, etc., a water level detecting device for detecting a water level in the tub, and a stirring blade provided in the tub , A load amount detection circuit that drives the stirring blade to detect a load amount, and a water supply valve that controls water supply to the tub, wherein the control circuit is a laundry set by a setting circuit. Water is supplied to the water level according to the type of water, agitated, and the cloth amount is determined by the load amount detection circuit. After this determination, the water level, washing time, dehydration time, etc. are controlled according to the cloth amount. A control device for an automatic washing machine was used.

Operation With the above configuration, the water level in the washing tub can be raised from the beginning so as not to damage the cloth, and the cloth level can be determined. After the determination, the water level can be further raised if the cloth level is large. For this reason, the water level can be automatically set even in a wool sweater or high-grade lingerie, so that the user does not have to bother to raise the water level and the amount of water can be saved.

Embodiment An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing an embodiment of the control device according to the present invention. An AC power supply 1 supplies power to the control device. Reference numeral 2 denotes a control circuit composed of a microcomputer, which controls each step of washing, rinsing, and dehydration, and a setting circuit 2a, a safety switch 2b, a water level detecting device 2c for detecting a water level in the tank, and a stirring device connected to the control circuit. The semiconductor switching devices 3a, 3b, 3c, and 3d (hereinafter simply referred to as triacs) are controlled in accordance with a signal from a load detection circuit 2d that drives the blades to detect a load. The triacs 3a and 3b control the forward / reverse rotation of the motor 4 for driving the stirring blades, and connect the connection point between the phase-advancing capacitor 5 for the motor and the motor coil and the AC power supply 1.
Are connected between the two terminals (U). Triac
3c controls the drain valve driving magnet 6 and triac
3d controls the water supply valve 7.

FIG. 2 shows a capacitor voltage A generated at the moment when the triac 3a or 3b is turned off and an output signal B from the load amount detection circuit 2d shown in FIG. When the triacs 3a and 3b are turned off, the voltage of the phase-advancing capacitor 5 decreases logarithmically in accordance with the load amount, and the number of pulses decreases as the load amount increases because the attenuation rate increases.

That is, the larger the amount of cloth in the washing tub, the larger the load applied to the motor that drives the stirring blades, the smaller the number of pulses of the capacitor voltage, and it is possible to determine the amount of cloth by integrating the number of pulses while stirring is stopped. Become.

FIG. 3 shows an embodiment of the operation display panel according to the present invention. In other words, a course setting key is provided in addition to the start / pause key 8a, and 8b is a course for washing everyday cotton or synthetic fiber, in which the stirring blade is rotated at a very low water level, and the amount of cloth is determined by the number of condenser pulses when the motor is off. Perform Run the sensor program. The water flow is a standard water flow. 8c is the time course setting key to save time, 8d
Is a large game course setting key when a large amount of cloth is desired to be sufficiently washed and rinsed. Reference numeral 8e denotes a wool washing course setting key according to the present invention, in which a sensor program of a schematic flowchart shown in FIG. 4 is set. That is, when the wool washing setting key is pressed and the start key is pressed, water is first supplied to a low water level or a middle water level 21, and then the number of condenser pulses after the motor is turned off by rotating the stirring blade is counted. If the number of determinations is determined in advance in accordance with the amount of wool cloth, the determination of the cloth amount is easy even at a low water level or a medium water level when the number of wool cloths is limited. If the amount of cloth is large, then raise the water level,
The water stream is agitated with a weak water stream suitable for wool washing. The delicate course setting key also performs the same water level setting, determines the amount of cloth, and resets the water level, but the water flow is slightly stronger than wool washing.

Effects of the Invention As described above, according to the present invention, for items that need to be washed by weakening the water flow, such as wool washing, the amount of cloth is determined by relatively increasing the water level from the beginning, and then the water level is increased. Therefore, there is a characteristic that cloth damage is almost eliminated. In addition, since the control device automatically adjusts the water level that was conventionally adjusted by the user appropriately, it can be done with one touch without misunderstanding, improving operability and automatically determining the water level according to the amount of cloth. It has the effect of saving water.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of an embodiment of a fully automatic washing machine control device according to the present invention, and FIG. 2 is a diagram showing the basic principle of load detection and a capacitor voltage A when the motor is off and an output signal B from the load detection circuit. FIG. 3 is an operation panel diagram as one embodiment, FIG. 4 is a flowchart of the same, and FIG. 5 is a flowchart of a conventional load amount detection. 2 Control circuit 2a Setting circuit 2c Water level detecting device 2d Load detecting circuit 4 Motor 7 Water supply valve

Claims (2)

(57) [Claims] 1. A control circuit for controlling each step of washing, rinsing, and dehydration, a setting circuit connected to the control circuit for setting a type of laundry, and a water level detecting device for detecting a water level in a tub. A motor for driving a stirring blade provided in the tank,
A load amount detection circuit that drives the stirring blade to detect a load amount, and a water supply valve that controls water supply into the tub, wherein the control circuit is a water level according to a type of laundry set by a setting circuit. And a stirrer is used to determine the amount of cloth by the load amount detection circuit. After the determination, the water level, the washing time, the dehydration time, and the like are controlled according to the amount of the cloth, and the control device of the fully automatic washing machine is characterized in that . 2. A control circuit comprising: a first sensor program for setting a minimum or low water level and then agitating and determining a cloth amount;
2. The control device for a fully automatic washing machine according to claim 1, further comprising a second sensor program for determining a cloth amount after setting water supply to a low or middle water level.