JPS60168429A - Controller of tablewear 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 Field of the Invention The present invention relates to a control device for a general household dishwasher.

Conventional Structure and Problems Conventionally, a control device for a dishwasher has been composed of a combination of a group of cam switches and a timer according to an operating program.

2. With such conventional control devices, even if the drainage hole becomes clogged during the drainage process and drainage cannot be sufficiently drained, the system continues to operate as usual, and as a result, it cleans with dirty water, which eliminates dirt. It had the disadvantage of reattachment.

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned conventional drawbacks and provides a control device for a dishwasher that can detect when drainage is defective, stop operation at that point, and notify that there is an abnormality in drainage. The purpose is to

Structure of the Invention In order to achieve the above object, the dishwasher control device of the present invention includes water level detection means for detecting the water level in the washing tank, a timer means for measuring a time limit, and outputs of the water level detection means and the timer means. Okay, input the output of the abnormality determination means for determining that the drainage is abnormal, the timer means and the abnormality determination means,
It is equipped with a control means for controlling a buzzer, a drainage pump for draining water from the cleaning tank, and a means for displaying the progress of each process of cleaning, rinsing, and drying, and when the abnormality determining means determines that there is an abnormality, the water is drained. Stops the pump, alerts you to abnormalities with a buzzer,
The progress display means for each stroke is configured to blink.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In FIG. 1, numeral 1 is a timer means for measuring time. 2 is a pressure switch that detects the water level in the cleaning tank, and when the water level is high, it is tripped, and when it is low, it is reset. 3 is an abnormality determination means which inputs the outputs of the timer means 1 and the pressure switch 2, and determines that there is an abnormality if the pressure switch 2 does not return to the reset state even after a certain period of time has passed since the start of drainage. It is something. Reference numeral 4 denotes a control means which receives input from the timer means 1 and the abnormality determination means 3 and outputs to a buzzer 5, a progress display means 6 for each process of washing, rinsing, and drying, and a drain pump 7. Here, if the abnormality determining means 3 determines that there is a drainage abnormality, the control means 4 is configured to immediately stop the drainage pump 7, alarm the buzzer 5, and cause the stroke progress display 6 to blink at a constant cycle. It is.

FIG. 2 is a circuit diagram showing a specific configuration of this embodiment. 8
9 is a bidirectional Zyristor that drives the drain pump 7, and 1o is a microcomputer. The microcomputer 10 includes an input section 10a that inputs the pressure switch 2, a drainage pump 7, a buzzer 5, an output section 10b1 that outputs to the process progress display 6, and determines whether there is a drainage abnormality in the drainage process, and outputs the input section 10a, 10b. It has an arithmetic control section 10C that controls.

Next, the operation of this embodiment will be explained. FIG. 3 shows the main part of flowchart 1 under the control of the microcomputer 10.

When the dishwasher enters the drain process, the microcomputer 10 drives the drain pump in step 11 to drain water from the washing tank to the outside. Next, in step 12, regurgitation is continued until a certain period of time (sufficient time for drainage) has elapsed since the start of drainage. When a certain period of time has elapsed in the five-vane iron, the microcomputer 1o detects in step 13 whether or not the pressure switch is in the reset state. If it is in the reset state,
Assuming that the drainage has been completed, proceed to the next step. However, if it has not been reset, it is determined that drainage has not been possible for some reason, and the drainage pump is stopped in step 14. Furthermore, in step 15, a buzzer sounds to notify of drainage abnormality, and in step 16, washing and rinsing are performed.

The drying progress indicator lamp flashes at regular intervals to visually notify abnormal conditions.

According to the embodiment described above, it is possible to detect a case where the drainage hole is clogged with slag and the like and cannot drain the water sufficiently, and it is possible to notify the user of this. Furthermore, unlike in the past, the program does not continue with poor drainage, and the program can be stopped when a drainage abnormality occurs.

Effects of the Invention The present invention provides a means for detecting water level, a timer means, and -
This device is equipped with a control means that detects a defective drain 6' by inputting the above two means, and notifies and displays this, and detects a drainage abnormality due to clogging of the drain hole or drain pipe. It is possible to notify.

That is, it is possible to provide a control device for a dishwasher that can prevent improper cleaning of dishes and the like due to drainage abnormalities.

[Brief explanation of drawings]

FIG. 1 is a block diagram of main parts of a dishwasher control device showing one embodiment of the present invention, FIG. 2 is a specific circuit diagram thereof, and FIG.
The figure is a flowchart of the main part. 1...Timer means, 2--Pressure switch, 3-
... Abnormality determination means, 4... Control means, 5...
...buzzer, 6--progress display means, completion...drainage pump, 1゜...microcomputer. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3

Claims (1)

[Claims] water level detection means for detecting the water level in the cleaning tank; timer means for timing; abnormality determination means for determining that drainage is abnormal based on the outputs of the water level detection means and the timer means; and the timer means. and the output of the abnormality determination means as input,
A control device for a dishwasher comprising a buzzer, a drain pump for draining water from a washing tank, and a control means for controlling progress display means for each process of washing, rinsing, and drying.