JPH05329289A - Full automatic washing machine - Google Patents

Abstract

PURPOSE:To decide the kind of the washing such as jeans, etc., so that a water flow and a washing course corresponding to a cloth quality can be controlled. CONSTITUTION:A rotation angle of a motor 5 for driving a pulsator disposed so as to be freely rotatable in a washing and dehydrating tank is detected by an encoder 15, and its output is inputted to a cloth quality deciding means 18 for deciding a cloth quality in the washing and dehydrating tank. When an operation for driving the motor 5 for a prescribed time and thereafter stopping it for a prescribed time is executed plural times by a control means 19, the cloth quality deciding means 18 decides the cloth quality by a deviation of an output of the encoder 15 in the respective dormant periods.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine for determining the type of laundry in a washing / dehydrating tub and performing washing, rinsing and dehydration.

[0002]

2. Description of the Related Art Conventionally, a fully automatic washing machine determines the amount of cloth in the washing / dehydrating tub and automatically sets the washing water time according to the amount of water supplied, the water flow and the dirt.

[0003]

In such a conventional fully automatic washing machine, the standard clothes that are normally washed every day are only controlled, and the special clothes such as jeans are preliminarily set by the user. There was a problem that it was necessary to judge, set a course and wash.

The present invention has been made to solve the above problems, and an object thereof is to determine the type of special clothing such as jeans and automatically set the water flow, the washing course, and the like.

[0005]

In order to achieve the above object, the present invention provides a motor for driving a pulsator rotatably arranged in a washing / dehydrating tub, and a rotation angle detecting means for detecting a rotation angle of the motor. And a cloth quality judging means for judging the cloth quality in the washing / dehydrating tub by the output of the rotation angle detecting means,
A control means for controlling the drive of the motor, wherein the cloth quality determination means, after driving the motor for a predetermined time by the control means, performs an operation of pausing for a predetermined time a plurality of times,
The problem solving means is to determine the cloth quality based on the deviation of the output of the rotation angle detecting means in each pause period.

[0006]

According to the present invention, by the above-mentioned means for solving the problems, the cloth quality can be judged by the deviation of the output of the rotation angle detecting means in each rest period, and the water flow and the washing course suitable for the cloth quality can be automatically controlled. You can

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, the washing / dehydrating tub 1 has a pulsator 2 rotatably arranged at the center bottom. The water tub 3 includes the washing / dehydrating tub 1 therein, and the substrate 4 is fixed to the outer bottom portion of the water tub 3, and the motor 5, the drain valve 6, the washing / dehydrating switching mechanism 7 and the like are arranged. The outer edge portion of the substrate 4 is suspended from the upper corners of the outer frame 10 via a vibration isolator 8 and a suspension rod 9. Outer frame 1
An upper cover 11 is provided on the upper part of 0, and a water supply valve 12, a power switch 13, a control device 14, and the like are provided. The encoder (rotation angle detecting means) 15 detects the rotation angle of the motor 5, outputs 6 pulses for each rotation of the motor 5, and inputs the output to the control device 14. The control device 14 includes a pulse counter 16 for counting the number of output pulses of the encoder 15, a cloth amount judging means 17 for judging the cloth amount by the output of the pulse counter 16, a cloth quality judging means 18 for judging the cloth quality, and a micro. From a control means 19 including a computer, a power switching means 20 for controlling the motor 5, the drain valve 6, the water supply valve 12 and the like by a signal from the control means 19, a key switch and a display device arranged in the operation panel 21, and the like. The operation display unit 22, the water level detection unit 23, the storage unit 24, the dirt detection unit 25, and the like. In addition, 26 is an AC power supply,
27 is a phase advancing capacitor of the motor 5.

The operation of the fully automatic washing machine configured as described above will be described with reference to FIGS. 3 to 6. First, after the start, the motor 5 is driven in step 30 of FIG. 3, the number of pulses at rest is counted by the pulse counter 16, in step 31, the cloth amount is detected by the cloth amount detecting means 17, and in step 32, Water is supplied to the minimum water level. Next, after supplying water to the minimum water level, in step 34, as shown in FIG. 4, the motor 5 is driven to the right for 0.8 seconds (predetermined time T1), and after resting for 3.0 seconds (predetermined time T2), It is driven to the left for 0.8 seconds (predetermined time T1) and 3.0 seconds (predetermined time T1).
2) Pause. This operation is repeated multiple times. When driven for 0.8 seconds (predetermined time T1), the rotation speed of the motor 5 rises as shown in FIG. At this time, the rise of the rotation speed of the motor 5 varies depending on the power supply voltage, the amount of laundry, the tension of the belt 28, and the like.
1) The rotational speed of the motor 5 rises to a predetermined value during driving.

Next, proceeding to step 35 in FIG. 3, the pulse counter 16 counts the number of output pulses of the encoder 15 from the beginning of the rest period. This is done in each rest period. At step 36, the cloth quality judging means 18 judges the cloth quality (type of laundry) from the deviation of the number of pulses in each idle period. That is, the pulse counter 16
As shown in FIG. 6, the number of detection pulses of No. 2 indicates that the deviation of the number of detection pulses for each rest period is small, whereas that of jeans is large. Therefore, if there is a deviation in the number of detected pulses that is equal to or greater than a certain value, it can be determined that the clothes are special clothes such as jeans.

After determining the cloth quality as described above, FIG.
In step 37, the operation display means 22 sets and displays the water flow and the washing course according to the cloth quality to notify the user, and in step 38, water is supplied to a predetermined water level according to the cloth amount,
Proceeding to step 39, stirring is started with the water flow set in step 37. Note that washing, rinsing, and dehydration after determining the cloth quality are controlled in consideration of the cloth quality.

As described above, according to this embodiment, when the control means 19 drives the motor 5 for a predetermined period of time, the cloth quality determining means 18 performs an operation of suspending the motor 5 for a predetermined period of time a plurality of times. Since the cloth quality is determined based on the deviation of 15 outputs, the water flow and the washing course can be automatically set according to the type of laundry such as jeans, and washing, rinsing and dehydration can be performed.

[0013]

As is apparent from the above embodiments, according to the present invention, the motor for driving the pulsator rotatably arranged in the washing / dehydrating tub and the rotation angle detecting means for detecting the rotation angle of the motor. And a cloth quality judging means for judging the cloth quality in the washing / dehydrating tub based on the output of the rotation angle detecting means, and a control means for controlling the drive of the motor. When the motor is driven by the means for a predetermined time and then paused for a predetermined time a plurality of times, the cloth quality is determined based on the deviation of the output of the rotation angle detection means in each pause period. However, it is possible to automatically set a water flow and a washing course according to the type of laundry such as jeans without needing to set a course in advance, and washing, rinsing, and dehydration can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram of a fully automatic washing machine according to an embodiment of the present invention.

[Fig. 2] Vertical sectional view of the fully automatic washing machine

FIG. 3 is an operation flowchart of main parts of the fully automatic washing machine.

FIG. 4 is a voltage waveform diagram applied to a motor when determining the cloth quality of the fully automatic washing machine.

FIG. 5 is a diagram showing the number of rotations of the motor when the cloth quality of the fully automatic washing machine is detected.

FIG. 6 is a diagram showing changes in the number of detection pulses for each rest period when detecting the cloth quality of the fully automatic washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing / dehydrating tank 2 Pulsator 5 Motor 15 Encoder (rotation angle detection means) 18 Cloth quality determination means 19 Control means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadayuki Nakamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A motor for driving a pulsator rotatably arranged in a washing / dehydrating tub, a rotation angle detecting means for detecting a rotation angle of the motor, and an output of the rotation angle detecting means for the washing / dehydrating tub. A cloth quality judging means for judging the cloth quality inside and a control means for controlling the drive of the motor, and the cloth quality judging means drives the motor for a predetermined time by the control means and then pauses for a predetermined time. When a plurality of times are performed, the fully automatic washing machine is configured to determine the cloth quality based on the deviation of the output of the rotation angle detecting means in each idle period.