KR960014490A - Dehydration degree and dehydration time detection device and method of automatic washing machine - Google Patents

Abstract

The present invention relates to an apparatus and method for detecting dehydration and dehydration time of a fully automatic washing machine, and in particular, to determine the dehydration time by measuring the degree of dehydration using a weight sensor, and to implement the optimum dehydration efficiency.

Conventional fully automatic washing machine is divided into stages (less than 1kg, less than 2kg, less than 3kg) to determine the dehydration time uniformly according to the sensed quantity, so that the laundry is distributed in addition to the weight of the laundry, the type of kink and dehydration Even if the same amount according to the state, it is not possible to measure the dehydration according to the different time, there was a problem that can not detect the exact dehydration time.

In order to solve the above problems, the present invention configures a weight sensor to accurately detect the weight of the laundry, and compares the weight of the laundry in the dry state with the weight of the laundry in the wet state to dehydrate the value set in the lookup table. To calculate the dehydration time by using the difference in the frequency change due to the displacement of the weight sensor according to the dehydration degree obtained above, it is to realize the optimum dehydration.

Description

Dehydration degree and dehydration time detection device and method of automatic washing machine

As this is a public information case, the full text was not included.

2 is a cross-sectional view showing a position where the weight sensor of the dehydration degree and dehydration time detection apparatus of the present invention fully automatic washing machine is attached,

Figure 3 is a flow chart showing the process of the dehydration degree and dehydration time detection method of the automatic washing machine of the present invention,

Figure 4 is a cross-sectional view showing the structure of the weight sensor of the dehydration degree and dehydration time detection apparatus of the automatic washing machine of the present invention.

Claims (3)

A weight sensor 1 for sensing the weight of the laundry put into the washing tank at the lower part of the washing machine, a sensor circuit unit 2 for converting the displacement of the washing tank detected by the weight sensor 1 into an electrical frequency signal, and the The microcomputer 3 which controls the driving unit 4 by determining the dehydration degree and the dehydration time by receiving the frequency signal output from the sensor circuit unit 2, and the washing motor and various water supply and drain valves under the control of the microcomputer 3. Dehydration degree and dehydration time detection apparatus of a full automatic washing machine, characterized in that consisting of a drive unit for driving a (4). Read the frequency F1 converted by the sensor circuit unit 2 into a displacement value detected by the weight sensor 1 before washing is performed; After the process of washing after determining the weight (W1) of the dry laundry in comparison with the value stored in the weight lookup table in advance, and washing, and after the washing is completed, after the dehydration starts A second process of reading the frequency F2 converted by the displacement value sensed by the weight sensor 1 from the sensor circuit unit 2 and determining whether a predetermined time (10 seconds) has elapsed, and determining the second process As a result, if the predetermined time (10 seconds) has not passed, the second process is repeated. If the predetermined time (10 seconds) has passed, the frequency corresponding to the weight of the laundry in the dried state (W1): A third step of determining whether the dehydration is over a certain level (50%) by measuring the degree of dehydration using a dehydration lookup table; and if the result of the third step is not more than a certain level (50%), Repeat process 2, and at a certain level (50%) If the above procedure proceeds, the fourth process of determining whether the difference between the frequency read in (F2 (i)) and the frequency read previously (F2 (i-1)) is within a certain range (0.03 Hz), and the fourth process If the frequency difference is greater than or equal to the predetermined range (0.03 Hz), the second process is repeated. If the frequency difference of the fourth process is less than or equal to the predetermined range (0.03 Hz), the case where the frequency difference is less than or equal to the predetermined range (0.03 Hz) is stored once (j). Dehydration of the full automatic washing machine comprising a fifth process of repeating the second process and stopping the dehydration when the frequency difference of the fourth process is less than a predetermined range (0.03 kHz) three times or more when the memory (j) is stored. Degree and dehydration time detection method. The method of claim 2, wherein in the third process, a value obtained by multiplying the weight W1 measured by the frequency F1 read in the first process by the value divided by the weight of the laundry measured when dewatering is 100 is 3. Dehydration degree and dehydration time detection method of a full-automatic washing machine, characterized in that to obtain the dehydration degree at that time from the table. ※ Note: The disclosure is based on the initial application.