JPS5995096A - Controller of electric 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 an electric washing machine, and particularly to water level setting control.

Conventional Structure and Problems Conventionally, the water level in the washing tub has been set by operating a water level switching knob provided on the operation panel. That is, for example, in the case of three-stage water level switching, low water level,
The user sets the water level by switching between the medium water level and the high water level, depending on the amount of laundry, the type of cloth, etc., by switching the water level switching knob. Furthermore, when washing laundry whose fabric is easily damaged, it has been common practice to set the intensity of water flow during washing to be weak to prevent fabric damage.

However, if the water level setting is set to low water level, even if the water level is set to low, even if the washing is done with gentle water flow, it will be washed with higher water level 2 weak water flow.
The user should:
It is necessary to set the water level selector switch to a high water level, which causes problems such as complicated operation and increased fabric damage due to forgetting to operate it. The object of the present invention is to solve the above-mentioned conventional problems and to automatically set the water level corresponding to the selected state of the water flow changeover switch, thereby improving operability and reducing cloth sagging.

Structure of the Invention In order to achieve the above object, the present invention provides load parts such as a water supply valve, a drain valve, and a motor that are driven to perform a series of operations such as water supply, agitation, and drainage, and a load unit in a washing tub. A water flow selector switch to set the strength of the water flow to agitate the laundry,
and a water level setting device for setting the water level in the washing tub in multiple stages, and when the water flow selector switch is set to a weak water flow intensity, the water level shifts to a higher water level than the water level originally set by the water level setting device. It is configured to do so.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Figure 1 shows the general configuration of a washing machine.
2 is a main body, 2 is an outer tank suspended and supported within the main body 1, 3 is a washing tank for washing and dehydrating clothes, and during dehydration, this washing tank 3 is rotated by a motor 4 attached to the lower part of the outer tank 2; The pulsator 6 is rotated by the motor 4 during washing and rinsing. 6 is an air trap, air hose 7
It is connected to a water level detector 8 for setting the water level via. 9
is the water flow selector switch, and the button 9a on the operation panel surface 10
Change the strength of the water flow.

FIG. 2 shows a block diagram of the control device, where 11 is a motor;
A loading section 12 includes a water supply valve, a drain valve, etc., and a program setting section 12, which includes switches for setting washing time, number of rinses, spin-drying time, etc.

The water level detector 8 is a semiconductor pressure sensor in which the water level in the washing tub 3 and the output voltage of the water level detector 8 are proportional.

It consists of a capacitive pressure sensor, etc.

13 is an operation control section, which includes a load section 11 and a program setting section 1.
2. It controls the water flow changeover switch 9 and the water level detector 8, and may be configured by, for example, a microcomputer.

FIG. 3 is a flowchart showing the operation process of the washing machine having the above configuration.

In the above configuration, the water flow selector switch 9 can be used to shorten the stirring time, such as running for 6 seconds and stopping for 15 seconds, or to lower the rotation speed by controlling the phase of the motor 4. When the weak water flow is set, the input port of the water flow changeover switch 9 of the operation control section 13 is switched from the LOW level to the HIGH level, and the operation control section 13 determines that the weak water flow has been set. The selected state of the water level detector 8 at that time is determined, and the operation is controlled so that the water level is set to high when the water level is selected as low water level, and so that the water level is set to high water level when the water level is set as medium water level. The water level detection judgment data level of section 13 is changed, and water is supplied to trenches where the water level is high.

Effects of the Invention As described above, according to the present invention, when the water level setting device is selected to a low water level and the water flow selector switch is set to a weak water flow, the water level is automatically set to a high water level and the water flow is increased. Therefore, damage, twisting, tangling, etc. of the cloth are reduced, and there is no need to operate the water level setting device itself, thereby eliminating the need for complicated operations.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical sectional view of an electric washing machine according to an embodiment of the present invention, FIG. 2 is an electrical block diagram of its control device, and FIG.
The figure is a flowchart diagram of the same. 6-J3...Washing tub, 8...Water level detector (water level setting device), 9...Water level selector switch, 11
...Load section, 13...Operation control section.

Claims (1)

[Claims] Load parts such as the water supply valve, drain valve, and motor that are driven to perform a series of operations such as water supply, agitation, and drainage, and water flow switching to set the strength of the water flow that agitates the laundry in the washing tub. a switch, and a water level setting device for setting the water level in the washing tub in multiple stages, and when the water flow selection switch is set to a weak water flow intensity, the water level originally set by the water level setting device is also changed. A control device for an electric washing machine configured to shift to a high water level.