JPH01178292A - washing machine control device - Google Patents

Abstract

PURPOSE:To enable a washing machine to be controlled according to the amount of laundry from the beginning of washing process by providing a control means for controlling a series of sequential operations such as washing, rinsing and dehydration, a flow detecting means for detecting water supply flow and a water level detecting means for detecting continuously the water level. CONSTITUTION:First a water supply valve 4 is opened to supply water. A flow detecting means 3 continuously detects the flow of water supplied from the water supply valve 4 to a washing tank 2 to send the output to a control means 5 which stores previously the shape, capacity, etc. of washing tank 2 to calculate the water level in the absence of laundry from the water flow supplied. A water level detecting means 1 detects continuously the water level during water supply to send the output to the control means 5 which inputs continuously the water flow and level and compares continuously the inclination of water level at supply water in the absence of laundry with that of actual level to judge the amount of wash. The control means 5 can control the washing process from the beginning thereof according to the amount of wash.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a washing machine control device that can automatically determine the flow of laundry and perform washing.

2. Prior Art Conventionally, in the past, such laundry was In a washing machine that can automatically determine i, when a small amount of water is supplied, the pulsator is rotated, and the laundry is stirred, the inertia rotation of the pulsator that changes depending on the amount of laundry is detected, or The amount of laundry was determined by detecting the "bi-boundary speed" of the rotation of the spin-drying tank during spin-drying.

Problems to be Solved by the Invention However, in the conventional configuration as described above, the laundry is agitated and detected when the water level is low compared to 117 of the laundry, which may damage the laundry or cause detection during the spin-drying process. In this case, there is a problem in that it is not possible to judge the laundry from the beginning of a series of washing steps such as washing, rinsing, and dehydration.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a washing machine control device that detects whether the laundry is dry when water is supplied and controls the washing process from the beginning.

Means for Solving the Problems In order to achieve the object 1-1 of the present invention, a control means for controlling a series of sequential operations such as washing, rinsing, and dehydration, and a flow rate detection means for detecting the flow rate of water supply are provided. and a water level detection means that continuously detects the water level, and the control means determines the water level assumed when there is no laundry and the water level detection based on the data of the water supply flow h1 obtained from the flow rate detection means. This is a washing machine control device that detects the amount of laundry by comparing it with the actual water level obtained from the means and controls the washing process from the beginning.

Effect of the present invention With the above-described configuration, the upper limit speed of the water supply water level that is assumed when there is no laundry at all and the upper limit speed of the actual water supply water level when the laundry is loaded are continuously controlled by the control means. The amount of laundry can be detected by the difference in the two-dimensional velocity, and the washing process can be controlled from the beginning.

EXAMPLE Below, drawings shown as an example of the present invention will be explained.

Reference numeral 1 denotes a water level detection means that continuously detects the water level in the washing tub 2 by detecting the pressure inside the air trap 2a provided in the washing tub 2. Reference numeral 3 denotes a flow rate detection means that detects the flow rate of water supplied from the water supply valve 4. Reference numeral 5 denotes a control means for controlling a series of washing processes such as washing, rinsing, and spin-drying, which determines the water level and the amount of laundry from the outputs of the water level detection means 1 and the flow rate detection means 3, and operates the pulsator drive means 6.

In the configuration as described in item 1, first, the water supply valve 4 is opened to supply water. The flow rate detection means 3 connects the water supply valve 4 to the washing tub 2.
The flow rate of water supplied to the water supply system is continuously detected and outputted to the control means 5. The control means 5 controls the shape of the washing tub 2 in advance,
The volume etc. are memorized, and the water level when there is no laundry is calculated from the water supply flow h1.

Figure 2 is a diagram showing the relationship between water level and time during water supply at a certain flow rate ht, where Δ is the relationship diagram when there is no laundry at all, B is the relationship diagram when there is a small amount of laundry, and C is when there is a large amount of laundry. It is a relationship diagram. When there is no laundry at all, the water level rises at a constant slope, but when there is a small amount of laundry, the slope increases until the point at B when all the laundry is submerged in water due to the bulk of the laundry. The slope of the water level becomes larger compared to . After that, the water level rises with the same slope as Δ. When the amount of laundry is large, C indicates that the slope changes to point C, which is a higher water level.

The water level detection means 1 continuously detects the water level in the water supply and outputs it to the control means 5. The control means 5 continuously manually adjusts the flow i1 and the water level, and continuously compares the slope of the water supply water level when there is no laundry with the slope of the actual water supply water level, so as to obtain the point b.
, a change in the slope corresponding to point C is detected, and the amount of laundry is determined based on the water level at that point.

In addition, since the control means 5 continuously compares the slope, it is possible to accurately detect the amount of laundry even if the water supply flow rate fluctuates slightly, and depending on this amount, it is possible to detect the amount of laundry at the beginning of the washing process. It was possible to control from

Effects of the Invention As described above, according to the present invention, the amount of laundry can be detected by comparing the water level when there is no laundry and when there is laundry when water is supplied, so it is possible to accurately determine the amount of laundry. It is possible to determine
Also, control can be performed according to the laundry load from the beginning of the washing process. Furthermore, since operations such as stirring are not performed to determine the amount of laundry when the amount of water supplied is small, there is an advantage that the laundry will not be damaged.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a washing machine control device showing an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between water level and time during water supply depending on the amount of laundry. 1...Water level detection means 3...Flow rate detection means 5...
・Control means

Claims (1)

[Claims] It is equipped with a control means for controlling a series of sequential operations such as washing, rinsing, and dehydration, a flow rate detection means for detecting the flow rate of water supply, and a water level detection means for continuously detecting the water level, and the control means is configured to detect the flow rate. The amount of laundry is detected by comparing the water level assumed when there is no laundry with the actual water level obtained from the water level detection means using the data of the water supply flow rate obtained from the means, and the amount of laundry is detected. A washing machine control device characterized in that it is controlled from the beginning.