JPS5944299A - Full automatic washer - 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 The present invention relates to a fully automatic washing machine with a built-in electronic control circuit that automatically executes various steps of washing, draining, rinsing, and dewatering in sequence according to a predetermined program, and particularly relates to drainage control thereof. be.

First, the control circuit of this type of fully automatic washing machine will be explained with reference to the block diagram shown in FIG.

In FIG. 1, 1 is an electronic control circuit that can automatically execute from the washing process to the final dehydration process, and basically consists of an electronic timer 2, a processing unit (CPU), 8
1. It is composed of a clock control circuit 4, a memory 5, an in-foot buffer control circuit 6, and an out-buffer control circuit 7.

A shows all the external input parts of the electronic control circuit 1. In this external input part A, 8 is a power switch that supplies power to the entire device, 9 is a lid switch that detects the opening/closing of the lid, and 1O is the one for the washing and dehydrating tank. Safety switch 11 that detects abnormal vibration is "
A water level switch that sets the water level in three levels: high, medium, and low, and detects when the water level in the tank has reached the set water level; 12
is a key switch for selecting programs and courses,
Reference numeral 18 denotes a water flow switch that is linked to the water level setting operation of the water level switch 11, closes a contact point corresponding to the set water level, and determines the strength of the water flow.

B indicates an external output part of the electronic control circuit 1, and in this external output part B, 13 is a drain valve, 14 is a water supply valve that controls water supply into the tank, and 15 is a valve that rotates a pulsator during the washing and rinsing processes. 16 is a washing non-dehydrating motor that generates a water flow; 16 is a display means provided with a light emitting diode corresponding to each process; 17;
is a buzzer. Each part of the external output section B is controlled to be energized by a switching element such as a Cyrisk.

The CPU 3 reads the status of each part in the external input section A via the input buffer control circuit 6, and also reads process data from the memory 5 to determine processes such as washing (including water supply), draining, rinsing, and dehydration. Each part of the external output section B necessary for executing the process is controlled by applying a signal to the switching element from the out-buffer control circuit 7, and the process transition is controlled by the electronic timer 2 working together with the CPU 3. It is done.

In a fully automatic washing machine with a built-in electronic control circuit,
Conventionally, the electronic control circuit l has been configured to automatically carry out washing, draining, rinsing, and dewatering steps in sequence according to the standard course program shown in Figure 2, and the hemorrhoid drainage process has been carried out exclusively according to the flowchart shown in Figure 3. As shown, this was done by time control.

That is, conventionally, as shown in Fig. 3, the start of the drainage operation (
] 'When the drain valve is opened by turning on the JI water solenoid), drain the water for a certain period of time (for example, 3 minutes and 30 seconds), and after the certain period of time, confirm that the water level switch has been reset and move on to the next dewatering process. The drainage time is always constant regardless of the set water level. Therefore, if the water level is set to "medium" or "low",
Even though the drainage in the tank is completed in a shorter time than when the water level is set to "high", the next dehydration process does not proceed until the drainage time has elapsed, just like when the water level is set to "high", and there is an extra wait during this time. It would take time, and it would be a waste of time.

The present invention has been made in view of this point, and embodiments of the present invention will be described in detail below with reference to FIGS. 1, 4, and 5.

19 is a washing and dehydrating tank, 20 is a pulsator, 21c4\tank, 13 is a drain valve, 15 is a washing and dehydrating motor, C is a reset water level of the water level switch 11 (water level from ON to OFF), D is a washing and dehydrating tank This is the water level at which drainage is completed at which no abnormality such as a locking phenomenon due to bubbling occurs even when the water is rotated.

In the present invention, the electronic control circuit 1 controls C so that the drainage process is opened as shown in the flowchart of FIG.
It is configured by program settings for the PU 3, and its control will be explained below.

Now, when entering the drainage process, the drainage operation is started by turning on the drainage solenoid and opening the drainage valve 13. Due to this draining operation, the water level in the water tank 21 gradually decreases, and when it reaches the reset water level C of the water level switch 11, the subsequent draining operation is temporally controlled and reset. for a certain period of time (for example, 20
2 seconds), turn on the washing/extracting motor 15 to perform washing/extracting.

The water tank 19 is rotated and the dehydration process begins.

As mentioned above, by detecting the reset of the water level switch 11 during the draining process, continuing the draining operation for a certain period of time, and moving to the next dewatering process after the certain period of time has elapsed, the time until the water level switch 11 is reset can be changed. Although it changes depending on the set water level, it is the time actually required for drainage, and the time from the reset water level C to the water level that completes drainage is constant regardless of the set water level. ,'j Time is gone, and the waste of time is eliminated.

It goes without saying that the time period during which the draining operation is continued after the water level switch and the notch 11 are reset is determined based on the time from the reset water level C until the water level reaches the completion water level.

As described above, in the present invention, even if the water level is set low, there is no waiting time in the drainage process.
It is possible to eliminate the waste of time that occurs in the past, and to save time.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the control circuit of a fully automatic washing machine, Fig. 2 is a standard chart diagram for a conventional fully automatic washing machine, Fig. 4 is an explanatory diagram of the fully automatic washing machine of the present invention, and Fig. 5 is a block diagram showing the control circuit of a fully automatic washing machine. 1: electronic control circuit, 2: electronic timer, 3: arithmetic processing unit, 5: memory, 11: water level switch. 15: Motor, 21: Washing and dehydration tank, C: Reset water level. Agent Patent Attorney Aihiko Fukushi (2 others) Figure 1 Figure 2 Figure 4 561-

Claims (1)

[Claims] 1. In a fully automatic washing machine with a built-in electronic control circuit that automatically executes various processes such as washing, draining, rinsing, and spin-drying in sequence according to a predetermined program, the water level switch reset 14- is detected during the draining process and then for a certain period of time. A fully automatic washing machine characterized by being equipped with a drainage control means that continues the drainage operation and moves to the next process after a certain period of time has elapsed.