JPH0274287A - Operation indicator in washing machine - Google Patents

Abstract

PURPOSE:To detect and indicate the water level in a washing drum even in the initial stand-by period by indicating the detected water level in case automatic control is selected by a sensor. CONSTITUTION:In case a sensor course is set and input to a control device 11 by a sensor course input device 1 during the initial stand-by period, a water level indicator 4 shows the detected water level until the water level in a washing drum is automatically set after the water level is detected by a water level detector 3 and the amount of wash items is detected by a load detector 10. For example, when water is not supplied yet into the washing drum in the beginning stage of washing, 'very little' is indicated on the water level indicator 4. When the sensor course is canceled, 'high water level' is always set automatically while the water level is not detected by the water level detector 3.

Description

[Detailed description of the invention] Industrial applications The present invention washes and rinses the laundry depending on its condition.

The present invention relates to an operation display device for a washing machine that can control each step of dewatering and also control the water level in a washing tub.

2. Description of the Related Art Conventionally, an operation display device for a washing machine of this type has a structure shown in FIGS. 4 and 6. In FIG. 4, the sensor course input means 1 is a switch for setting automatic control by a sensor in each process of washing, rinsing, and spin-drying. , rinsing, spin-drying time, water flow strength and water level. The control means 2 controls a series of sequential operations of washing, rinsing, and dehydration.

As shown in FIG. 6, the water level display means 4 indicates the water level in the washing tub as "high J4a", "medium J4b", "low J4a", "small amount".
Settings are displayed in six stages: 4d, "extremely small" and 4.

Further, the AC power source 9 and the switching device 6.6 are connected in series to supply power to the motor 8. The switching device 6.6 is a semiconductor switching device such as a bidirectional thyristor, and controls forward and reverse rotation of the motor 8 that drives the stirring blade based on a signal from the control means 2. 7 is a phase advancing capacitor connected between the windings of the motor 8. The load amount detection means 1o inputs the voltage change across the capacitor 7 as a pulse when the motor 8 is turned off between forward and reverse rotations, and detects the amount of load applied to the seventh motor 8 according to the number of pulses. Detect. That is, as the amount of cloth increases, the load on the stirring blades increases, the rotational speed of the motor 8 decreases quickly, and the voltage of the capacitor changes rapidly.

If the signal from the sensor course input means 1 is input to the control means 2 during the period from when the power is turned on until the washing starts (hereinafter referred to as initial standby time), the water level in the washing tub is still detected during this period. As shown in FIG.
Make temporary display settings for "High water level" 4a.

Problems to be Solved by the Invention In such a conventional configuration, if the user sets the sensor course, the high water level J4a will always be displayed.
There was a problem in that the user may misunderstand that the washing operation is performed at a high water level when setting the sensor course.

In view of the above problems, it is an object of the present invention to detect the water level in the washing tub even during initial standby, and to display the detected water level on the water level display.

Means for Solving the Problems To achieve the above objects, the present invention includes a sensor that detects the amount of laundry, degree of dirt, etc., and automatic control using the sensor during each process of washing, rinsing, and spin-drying. a sensor course input means for detecting the water level, a water level detecting means for detecting the water level μ in the washing tub, and a water level display means for displaying the water level, and the water level display means is automatically controlled by the sensor before the washing starts. If selected,
The water level detected by the water level detection means is displayed.

Function: With this configuration, it is possible to display the actual water level in the washing tub by setting the sensor course, and it is not necessary to set the sensor course, but the high water level will be displayed, and water will always be supplied to the high water level. It is possible to eliminate the user's misunderstanding.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. In FIG. 1, components that are the same as those in the conventional configuration are given the same numbers and their explanations will be omitted. In FIG. 1, water level detection means 3 detects the water level in the washing tub and outputs the detected water level to control means 11 which controls water level display means 4 and motor 8. Further, the water level display means 4 displays the actual water level in the washing tub as shown in FIG.

[Display is performed in five stages: low J4a, "small amount" J4d, and "extremely small amount" 4e.

During initial standby, if the sensor course input means 1 is set and input to the control means 11, the water level detection means 3 detects the water level in the washing tub, and the load amount detection means 1o detects the amount of laundry. Until the water level is detected and automatically set, the water level display means 4 displays the water level at the detected level. For example, when water is not being supplied to the washing tub at the beginning of washing, the display means 4 will display "
The water level will be displayed as "very low" 4d.

Further, when the sensor course is canceled, the water level is not detected by the water level detecting means 3 and the water level is automatically set to "high water level".

Next, the operation of this embodiment will be explained with reference to FIG.

First, in step 2Q, the control means 11 constituted by a microcomputer determines whether or not the power has been turned on. If the power has been turned on, it is determined in step 21 whether or not a sensor course has been input. If the sensor course is input, in step 22,
The water level is detected by the water level detection means 3, and the detected water level is displayed by the water level display means 4. Further, if it is determined in step 21 that the sensor course has not been set, the water level display means 4 displays the setting of "high water level".

Effects of the Invention As is clear from the above embodiments, according to the present invention, when the sensor course is set during initial standby, the actual water level in the washing tank is displayed on the water level display means, so that it is not necessary to use the conventional water level display means. ``High water level'' is displayed on the screen, which eliminates the user's misunderstanding that water may be supplied to a high water level.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an operation display device for a washing machine according to an embodiment of the present invention, FIG. 2 is a diagram showing water level display means, FIG. 3 is a flowchart of the operation display device, and FIG. 4 is a conventional one. FIG. 6 is a block diagram showing the operation display device of the washing machine, and FIG. 6 is a diagram showing the water level display means. 1...Sensor course input means, 3...
・Water level detection means, 4...Water level display means, 5, 6
・・・・・・Semiconductor Nuwitch ignition device completed...
Phase advance capacitor, 8...Motor, 9...
...AC power supply, 10...Load amount detection means, 11
...control means. Name of agent: Patent attorney Shigetaka Awano and 1 other figure

Claims (1)

[Claims] A sensor that detects the amount of laundry, degree of dirt, etc.
A sensor course input means for setting automatic control by the sensor during each process of washing, rinsing, and spin-drying, a water level detection means for detecting the water level in the washing tub, and a water level display means for displaying the water level, An operation display device for a washing machine, wherein the water level display means displays the water level detected by the water level detection means when automatic control by the sensor is selected before washing starts.