JPH03168192A - Controller for washing machine - Google Patents

Abstract

PURPOSE:To allow increasing or decreasing washing time of a washing machine, in which washing time is controlled based on output data of a transmissions detector in a washing drum, by operating a particular switch. CONSTITUTION:When washing time is increased at the time of delivery from a factory, it is judged whether or not a test mode 2 is set when a power source switch is turned on, and a mass-production correction mode is selected by a water level switch 26. Then, when the mass-production correction setting state is kept by a sensor sensor switch 27 and a start/stop switch 28 is pressed, the mass-production correction mode is set and washing time is extended by three minutes. When a claim for washing time is made on the market and a service man adjusts washing time, and when test mode 3 is set at the time when the power source switch is turned on, the mode is changed to a service mode by the water level switch 26, a service correction level is selected by the sensor course switch 27, and the start/stop switch 18 is pressed to set the service correction mode. In the case of service correction mode, washing time is adjustable by three minutes with 30-second unit at the maximum.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a washing machine control device that controls washing, rinsing, and spin-drying using a transmittance detector that detects the light transmittance of liquid in a tank. .

2. Description of the Related Art Conventionally, as a control device for this type of washing machine, there has been a washing machine control device that optically detects the degree of removal of dirt from the laundry and controls the washing time.

Problems to be Solved by the Invention However, in the above-mentioned washing machine control device, the washing time is determined based on the degree of dirt removal. Therefore, if it is determined that the dirt has come off, the washing is finished, but the criteria for determining that the dirt has come off differs from person to person. Some people may do so.

SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned conventional problems, and aims to make it possible to increase or decrease the washing time by operating a specific switch.

Means for Solving the Problem In order to solve this object, the washing machine control device of the present invention includes a transmittance detector that detects the transmittance of light in the tub, and a control device based on the output data of the transmittance detector. The washing time can be increased or decreased by operating a specific switch on the input means. It is of a configuration that makes it possible.

According to the present invention, when a customer requests to lengthen or shorten the washing time, it becomes possible to respond by simply increasing or decreasing the washing time by operating a specific switch. Further, there is no need to spend a large amount of time modifying the program software to correct the washing time.

EXAMPLE Hereinafter, an example in which the present invention is applied to a fully automatic washing machine will be described with reference to the drawings.

Fig. 2 is a cross-sectional view of a fully automatic washing machine, in which 1 is the outer frame, 2 is the water tank, 3 is the washing and dehydrating tank, 6 is the washing and dehydrating tank 3 during dehydration, and the stirring blade 4 is used during washing or rinsing. This is a power switching mechanism for switching the power of the washing/drying motor 5 so as to rotate the washing/drying motor 5.

7 is an air pocket for generating pressure corresponding to the water level, 9 is an air hose for transmitting the pressure generated in the air pocket 7 to the water level detection means 8, and 10 is a water receiving tank 2.
11 is a drainage hose; 12 is a supply valve for supplying tap water into the water receiving tank 2; Reference numeral 13 denotes a transmittance detection section for detecting the transmittance of light in the water tank 2, and as shown in FIG. 3, it is composed of an infrared light emitting element 13a and a light receiving element 13b.

Next, FIG. 1 shows the circuit structure of a fully automatic washing machine. In the figure, 14 is an input means for setting which process of washing, rinsing, and dehydration is to be performed, water level, etc., and 15 is an input means for setting the contents set by the input means 14, the progress status of washing, remaining time, etc. 8 is a water level detection means for detecting the water level in the water receiving tank 2 and generating an electric signal; 16 and 17 are bidirectional thyristors for driving the washing and dewatering motor 5; , 18 is a bidirectional thyristor for driving the water supply valve 12, 19 is a bidirectional thyristor for driving the drain valve 10, 20 is a commercial power source, 21
22 is a transmittance detector for detecting the transmittance of light in the water receiving tank 2; 23 is a cloth amount detection means for detecting the amount of laundry; and 24 is an output signal of the transmittance detector 22. is input into the A/D converter and A/D converted, and the microcomputer (hereinafter referred to as microcomputer) serves as a control means for controlling operations such as washing, rinsing, and spin-drying based on the data and the output signal of the cloth amount detection means 28. ). 25 is a maximum value detection means, and 26 is a memory. Figure 4 shows transmittance detector 2.
An example of 2 is shown. 22a is a constant current source which is supplied from the PWM circuit and the D/A converter and receives a signal from the microcomputer 24 to send a constant current to the infrared light emitting element 13a, 22b and 22d are resistors, and 22C is a microcomputer. The current flowing through the infrared light emitting element 13a is turned on by the signal from 24.
This is a transistor that controls OFF.

In the fully automatic washing machine having the above structure, an embodiment of the present invention realized by a microcomputer program will be explained first with reference to the flowchart in FIG. 5 and the operation panel of the control device of the fully automatic washing machine in FIG. A case in which an operation to increase the washing time (hereinafter referred to as mass production correction) is performed at the time of shipment will be explained. Immediately after power is applied to the microcomputer, the microcomputer 24 takes step 10.
If the value is 0, it is determined whether the test mode is 1 or not. It is in test mode 1, and then when the power switch is turned on, it is determined in step 101 whether it is in test mode 2. When in test mode 2, the water level switch 26 is used to set the mass production correction mode, and then the sensor course switch 27 is set to the mass production correction setting state, and the start/stop switch 2
Pressing 8 will set the mass production correction and extend the washing time by 3 minutes. Since this state is written into the memory 26 at the time of the above setting, the state of mass production correction is stored even if the microcomputer 24 is reset. To cancel the mass production correction, follow the same procedure as above to set the mass production correction mode, then set the sensor course switch 27 to the mass production correction cancellation state and press the start/stop switch 28 to cancel the mass production correction and extend the washing time. It disappears. This state is also stored in memory.

Next, a case will be described in which a service person performs an operation to adjust the washing time (hereinafter referred to as service correction) when there is a complaint regarding the washing time in the market. When test mode 61 is not set in step 100 and the power switch is turned on, step 102
It is determined whether test mode 3 is selected. Test mode 3
At this time, when the water level switch 26 is set to service correction mode, the sensor course switch 27 is used to select a service correction level, and the start/stop switch 28 is pressed, the service correction is set. In the case of service correction, the wash time can be adjusted in 30 second increments up to a maximum of 3 minutes. To change or cancel this, follow the same procedure as above to set the service correction mode, change or cancel the service correction level with the sensor course switch 27, and start/start.
It can be changed or canceled by pressing the stop switch 28.

The status of service corrections is also stored in memory when the start/stop switch is pressed.

Effects of the Invention As described above, according to the present invention, it is possible to easily increase or decrease the washing time by operating a specific switch, and the washing time (washing completion) can be made close to the user's preferred washing time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a fully automatic washing machine according to an embodiment of the present invention, FIG. 2 is a sectional view of a fully automatic washing machine according to an embodiment of the present invention,
FIG. 3 is a sectional view of a transmittance detector according to an embodiment of the present invention, FIG. 4 is a circuit diagram of a transmittance detector according to an embodiment of the present invention, and FIG.
The figure is a flow chart of one embodiment of the present invention, and FIG. 6 is a front view of the operation panel of a fully automatic washing machine of one embodiment of the present invention.

Claims (1)

[Claims] A transmittance detector that detects the light transmittance of the liquid in the tank, a control means that controls washing time, and conditions for washing, rinsing, dehydration, etc. are set based on the output data from the transmittance detector. A control device for a washing machine, comprising an input means for adjusting the washing time, and a memory for storing a washing time correction state, the washing time being able to be increased or decreased by operating a specific switch of the input means.