JPH09192389A - Fully automatic electric washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an intermittent dehydration action to be performed without accumulating wrung water at the bottom of an outer tank even when the drain capability is low by executing the intermittent dehydration action in the intermittent dehydration action mode corresponding to a preceding drained state, in a fully automatic electric washer which performs the intermittent dehydration action at the beginning of a dehydration action. SOLUTION: When the water is drained at the end of a rinsing process following a washing step and a rinsing step, the draining operation is begun by opening a drain valve 11. In this case, the time between timing points at which the detection values of two water levels detected by a water level sensor 15 halfway through the draining process is counted by a control part 20. In addition, the draining time and the intermittent dehydration action mode corresponding to the counted time are selected from memory 23. For example, when the draining capability is low and the counted time is 20sec. or more, the action mode 'draining time - 2min., intermittent dehydration action mode - 4sec. ON, 6sec. OFF pattern, repetitive frequency 6' is selected to perform the intermittent dehydration process. Thus it is possible to drain the water without the accumulation of the wrung water at the bottom of an outer tank due to dehydration.

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 that performs intermittent dewatering operation at the beginning of dewatering operation.

[0002]

2. Description of the Related Art In a fully automatic washing machine, a washing step, a rinsing step and a dehydrating step are automatically performed in sequence, and recently, there is an automatic washing machine in which an intermittent dehydrating operation is performed at the beginning of the dehydrating step. .

In this way, the intermittent dehydration is carried out from the beginning, when a continuous dehydration is started, a large amount of water is squeezed out, resulting in a loud draining sound, and since the initial dehydration amount is large, it is the outer tank. It accumulates at the bottom of the tank and interferes with the rotation of the dewatering tank, and the dewatering operation cannot be performed smoothly. In particular, when the dehydrated water contains a large amount of detergent, a large amount of bubbles are generated by stirring the accumulated water in the dehydration tank, and these bubbles become a resistance, which significantly hinders the rotation of the dehydration tank. Furthermore, if the laundry is unevenly located in the dehydration tub, the vibration of the dehydration tub will increase and the noise will increase, and if the vibration becomes very large, the operation will be stopped. . Intermittent dehydration is performed so as to solve such a problem.

[0004]

However, even when performing intermittent dewatering, if the drainage hose has a poor drainage capacity due to the arrangement and the like of the drainage hose, the water squeezed out by the dewatering will accumulate at the bottom of the outer tub and the dewatering operation will be smooth. There is a problem that is not done.

The present invention has been made to solve the above problems, and it is an object of the present invention to ensure that the intermittent dewatering operation is always performed well in accordance with the drainage capacity.

[0006]

According to a first aspect of the present invention, in a fully automatic washing machine that performs an intermittent dewatering operation at the beginning of the dewatering operation, the intermittent dewatering operation corresponds to the previous drainage state. The configuration is performed in the intermittent dehydration operation mode.

According to the above construction, the drainage state, that is,
When the drainage performance is good or bad, intermittent dehydration operation is performed corresponding to each, so that even if the drainage capacity is poor due to the arrangement of the drainage hose, the squeezed water accumulates at the bottom of the outer tank. Therefore, the intermittent dewatering operation is smoothly performed, and as a result, the intermittent dewatering performance of the fully automatic washing machine is improved.

According to a second aspect of the present invention, in a fully automatic washing machine that performs intermittent dewatering operation at the beginning of the dewatering operation, water level detection means for detecting the set two water levels during drainage before the intermittent dewatering operation, Counting means for counting the time between detection of the set two water levels, storage means for storing a plurality of intermittent dehydration operation modes, and intermittent dehydration operation in the intermittent dehydration operation mode in the storage means corresponding to the count time. And an intermittent dehydration operation control means for executing.

According to the above configuration, the time between the detection of the two water levels during drainage is counted, and in the intermittent dehydration operation mode corresponding to the count time, the drainage state, that is, the case where the drainage performance is good and the case where the drainage performance is bad, are dealt with. The intermittent dewatering operation is performed so that even if the drainage hose has a poor drainage capacity due to the arrangement of the drainage hose, the squeezed water does not accumulate on the bottom of the outer tub and the intermittent dewatering operation is performed smoothly. As a result, the intermittent dewatering performance of the fully automatic washing machine is improved.

According to the third aspect of the invention, in the second aspect of the invention, further, since the drainage is performed in the drainage time corresponding to the drainage state, the drainage is surely completed even when the drainage performance is poor. At that point, intermittent dehydration is started, which further improves the intermittent dehydration performance of the fully automatic washing machine.

The intermittent dehydration operation mode is ON, for example.
/ OFF pattern and the number of times the pattern is repeated (the invention according to claim 4).

The intermittent dewatering operation of the present invention may be performed at the beginning of the dewatering step after draining in the rinsing step, as in the following embodiment, and at the beginning of dewatering after draining in the washing step. May be done in.

[0013]

1 is a sectional view showing the overall construction of a fully automatic washing machine, and FIG. 2 is a block diagram showing the electrical connection construction.

In FIG. 1, 1 is an exterior frame,
Reference numeral 2 denotes an outer tub suspended from the outer frame 1 and provided therein, and a dehydration tub 3 is provided in the outer tub 2.
5 is a pulsator provided at the bottom of the dehydration tank 3,
Power from the motor 6 is given through the mechanical case 7 to rotate forward and backward. A brake and a clutch are built in the mechanical case 7.

Reference numeral 10 denotes a drain port provided at the bottom of the outer tub 2, and a drain valve 11 is provided below the drain port 10. From the drain valve 11, a drain hose 12 is provided.
Is extending.

Reference numeral 15 denotes a water level sensor as a water level detecting means. From the water level sensor 15, a pipe 1 for detecting the water level is provided.
6 extends, and its lower end is connected to the lower portion of the outer tub 2. In this way, the water pressure applied via the pipe 16 corresponding to the amount (water level) of water in the outer tub 2 is the water level sensor 1
5 is detected.

In FIG. 2, reference numeral 20 is a control unit composed of a microcomputer, which constitutes the counting means and the intermittent dehydration operation control means of the present invention. In the control unit 20, in addition to the motor 6, the drain valve 11, the water level sensor 15,
An operation unit 22 provided with various operation switches and a memory 23 as a storage unit are connected. In the memory 23,
As shown in FIG. 3, the drainage time and the intermittent dewatering operation mode are stored, and the intermittent dewatering operation mode is ON / OF.
It consists of an F pattern and the number of times the pattern is repeated.

The operation will be described below with reference to the flowchart of FIG. First, a washing process and a rinsing process are performed,
The operation from the time when drainage is performed at the end of Suzugi will be described.

Drainage is started by opening the drain valve 11 (step 1). Then, the control unit 20 counts the timings at which the detection values of the two water levels A and B detected by the water level sensor 15 are obtained during the drainage, and the drainage time and the intermittent dehydration operation mode corresponding to the count time are stored in the memory. Select from 23 (steps 2 to 6). In the above, for example, when the drainage capacity is low and the count takes 20 seconds or more, the drainage time is set to “2 minutes” and the intermittent dehydration operation mode “4 seconds ON, 6 seconds OFF pattern, number of repetitions 6” is selected. If the drainage performance is higher than that, the other two drainage times and the operation mode of the intermittent dehydration operation mode are selected. The drainage time is the time from the reset water level, that is, the minimum water level detected by the water level sensor 15 to the completion of drainage.

Then, when the reset water level is detected by the water level sensor 15, the counting of the drainage time is started, and when the counting of the drainage time selected in step 6 is completed, the motor 6 is driven to select. The intermittent dehydration operation in the intermittent dehydration mode is performed (steps 7, 8, 9, 10).

As described above, when the drainage time is selected and determined, it takes a long time for drainage when the drainage performance is low, but since this type of water level sensor 15 cannot detect the completion of drainage, Completion of drainage is also estimated from actual drainage performance. And after that drainage is completed,
That is, intermittent dewatering is started in a state where water is not accumulated in the outer tub 2 so that the intermittent dewatering operation is favorably performed.

Further, as described above, the intermittent dehydration is performed in the ON / OFF pattern corresponding to the actual drainage performance, so that even when the drainage performance is poor, the squeezed water accumulates at the bottom of the outer tank. Without intermittent dehydration in the
As a result, the intermittent dewatering operation can be performed smoothly and without waste of time.

After the intermittent dehydration operation is completed, the continuous dehydration operation is performed (step 11).

[0024]

According to the present invention, even if the drainage capacity is poor due to the arrangement of the drainage hose and the like, the intermittent dehydration operation can be performed smoothly without the squeezed water due to dehydration accumulating on the bottom of the outer tub. As a result, the intermittent dehydration performance of the fully automatic washing machine is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the overall configuration of a fully automatic washing machine of the present invention.

FIG. 2 is a block diagram showing an electrical connection configuration of the fully automatic washing machine of the present invention.

FIG. 3 is an explanatory diagram of stored contents of a memory.

FIG. 4 is a flowchart for explaining the operation of the fully automatic washing machine of the present invention.

[Explanation of symbols]

 15 water level sensor (water level detection means) 20 control unit (counting means, intermittent dewatering operation control means) 23 memory (storage means)

Claims (4)

[Claims] 1. A fully automatic washing machine that performs an intermittent dewatering operation at the beginning of a dewatering operation, wherein the intermittent dewatering operation is performed in an intermittent dewatering operation mode corresponding to a drainage state before that. Machine. 2. A fully automatic washing machine which performs an intermittent dehydration operation at the beginning of the dehydration operation, a water level detecting means for detecting a set 2 water level at the time of drainage before the intermittent dehydration operation, and the set 2 water level. Counting means for counting the time between detections, storage means for storing a plurality of intermittent dehydration operation modes, and intermittent dehydration operation for executing the intermittent dehydration operation in the intermittent dehydration operation mode in the storage means corresponding to the count time. A fully automatic washing machine, comprising: a control means. 3. A fully automatic washing machine which performs an intermittent dehydration operation at the beginning of the dehydration operation, a water level detecting means for detecting a set 2 water level at the time of drainage before the intermittent dehydration operation, and the set 2 water level. The counting means for counting the time between detections, the storage means for storing a plurality of operation modes consisting of the drainage time and the intermittent dehydration operation mode, and the drainage time of the operation mode in the previous storage means corresponding to the count time An intermittent dewatering operation control means for starting the intermittent dewatering operation and executing the intermittent dewatering operation in the intermittent dewatering operation mode. 4. The intermittent dehydration operation mode is ON / OF.
The fully automatic washing machine according to claim 1, 2 or 3, which comprises a pattern F and the number of times the pattern is repeated.