JP2019097719A - Washing machine - Google Patents

Abstract

To provide a washing machine capable of preventing a rinsing effect from deteriorating during water pouring rinsing, even in the case where a water supply flow rate is low.SOLUTION: A washing machine includes: an outer tub disposed in an outer frame; an inner tub provided in a rotatable manner and for storing laundry; a pulsator arranged in the inner tub; a motor for driving the inner tub or the pulsator; a clutch for switching connection; water supply means for supplying water; drainage means for draining water; and operation control means for performing control. The operation control means has a plurality of procedures for the rinsing operation in which agitation is performed while water is being supplied from the water supply means. The water supply flow rate is measured, and the rinsing operation is switched according to the measured water supply flow rate.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a washing machine.

  The washing machine has a washing process, a rinsing process, and a dewatering process in which water is stored in the tank and a stirring operation is performed. In the rinsing step, the water in the tank is drained, intermediate dehydration is performed to rotate the tank at high speed, and stirring is performed after water is accumulated in the tank. At this time, there are two types of rinsing operations mainly for rinsing in order to carry out stirring in a state where water is accumulated, and water supply valve is opened during stirring so as to have a higher rinsing effect. Since the rinse effect changes depending on the flow rate of water supply in the water injection rinse, as described in Japanese Patent No. 35388898 (Patent Document 1), the method of extending the time of intermediate dehydration by the flow rate of water supply or JP-A-8-38790 As described in (Patent Document 2), there is a method of increasing the number of times of water rinsing and the like by the flow rate of water supply.

Patent No. 35388898 JP-A-8-38790

  However, in the case of extending the time of intermediate dewatering, although the time taken for washing may be slightly extended, the user may not be able to obtain the rinsing effect, and in the case of increasing the number of rinsing times, the time taken for washing And it is possible that the water consumption will increase greatly.

  Therefore, in view of the above problems, the present invention provides a washing machine capable of obtaining the rinsing effect desired by the user while minimizing the extension of the time required for washing even when the amount of water supplied is small. To aim.

  In order to achieve the above object, as one example thereof, the flow rate of the water supply is measured, and according to the flow rate, it is characterized in that the time for performing the water injection for the rinse is extended only when the water supply rinse is set.

  According to the present invention, it is possible to provide a washing machine capable of obtaining the rinsing effect desired by the user while minimizing the extension of the time required for washing even when the amount of water supply is small.

Structure diagram of washing machine showing the form of the embodiment of the present invention Block diagram showing the form of the embodiment of the present invention Flowchart showing control contents in the conventional washing machine Flowchart showing control contents in the conventional washing machine Flow chart showing control contents in the embodiment of the present invention Flow chart showing control contents in the embodiment of the present invention Relationship between agitation time and rinse water supply time

  Examples will be described below with reference to the drawings.

  FIG. 1 is a structural view of a washing machine of this embodiment.

In FIG. 1, 1 is a case of a washing machine. An outer tub 2 is mounted in the housing 1. An inner tank 3 is accommodated in the outer tank 2, and the inner tank 3 is coaxially connected to the main motor 5 and is rotatable. The clutch 11 is used for fixing the main motor 5 and the inner tank 3 to rotate the entire inner tank 3 or for switching to fix the pulsator 4 to be fixed to the pulsator 4 and connected to the upper part of the main motor 5 It is done.
By rotating the entire inner tank 3, the laundry is dewatered, and by rotating the pulsator 4, the stirring operation is performed.

  Tap water is supplied to the outer tank 2 from the water supply hose 15 through the water supply valve 12 and the softener valve 13. Water accumulated in the outer tank 2 can be drained to the drainage port 8 through the drainage hose 7 by opening the drainage valve 6. Opening and closing of the drain valve 6 is operated by a drain valve driving motor 9.

  FIG. 2 is a block diagram of the washing machine of the present embodiment.

  The washing machine is controlled by the microcomputer 104, and according to the input contents of the operation switch 131 of the operation panel, the main motor 111, the circulation pump 112, the bath water pump 113, the water supply valve 114, the drainage valve via the load drive circuit 103. 115, the softener valve 116 and the lid lock 117 are driven to perform the washing operation.

  In addition, water level monitoring by water level sensor 121, temperature monitoring by temperature sensor 122, motor rotational speed monitoring by rotation sensor 123, safety lever 124 for preventing outer frame contact of washing tub by detecting shaking, nonvolatile memory 125 Operation setting and information storage according to the above, and display of the operation state by the LED display circuit 132.

  The power supply 101 supplies power to the microcomputer 104, the load drive circuit 103, each sensor, and the like.

FIG. 3 shows the flow of the rinsing process of the conventional washing machine.
After draining the water accumulated in the outer tank 2, dewatering is performed. Water is supplied after dehydration, and water supply is stopped when reaching the specified water level. There are a water pouring rinse which stirs while supplying water according to a setting of a rinse, and a rinse for stirring while water supply is stopped.

FIG. 4 is a flow chart showing the operation of water rinsing and rinsing of the conventional washing machine.
The water injection rinse sets stirring time and starts stirring. After that, water supply is started, and water is supplied while stirring. After the water level is detected during agitation and the drainage water level is reached, open the drainage valve and start drainage. After reaching the drainage stop water level, close the drainage valve to stop drainage, and start water supply again. Thereafter, the water supply and drainage and stirring are continued, and when the stirring time passes, the water supply is stopped, the stirring is ended and the operation is ended.

5 and 6 show the flow of the rinsing process of the washing machine in this embodiment.
After draining the water accumulated in the outer tank, dewater it. Water is supplied after dehydration, and water supply is stopped when reaching the specified water level. At this time, measure the time T to reach the specified water level. Stirring is performed by rinsing or pouring in accordance with the setting of rinse.
The rinse operation is the same as the conventional rinse operation.

FIG. 6 shows one operation example of the water rinse in the present embodiment.
Stirring time 1 is set at the start of rinsing and start stirring. At the start of the stirring, the value of the number of times of drainage is set to 0, and the stirring time 1 is set as shown in FIG. FIG. 7 is an example, and the setting value is not limited to this.

After that, water supply is started, and water is supplied while stirring. After the water level is detected during agitation and the drainage water level is reached, open the drainage valve and start drainage. When starting drainage, add one to the number of drainages. After reaching the drainage stop water level, close the drainage valve to stop drainage, and start water supply again. Thereafter, the water supply and drainage and agitation are continued, and when the agitation time 1 passes, the number of times of drainage is confirmed, and if the number of times of drainage is N times or more, the amount of water supplied is sufficient and the agitation is ended and the water injection rinse is ended. .
If the number of times of drainage is less than N times, the following additional rinse is performed.

Here, N times of the number of times of drainage, which is a criterion of the determination, is determined in advance by performing an experiment. In this experiment, the rinse performance (the remaining amount of detergent and the lint adhesion amount) according to the number of times of drainage is measured, and the number of times of drainage where the required performance can be obtained is determined. For example, in the case of a washing machine that performs drainage five times when the water supply pressure is maximum, the reference number of times N is five.
In the additional rinse, feed water to the drainage level while stopping agitation. After that, the stirring time 2 is set and the stirring is performed until the stirring time 2. After the stirring time 2 has elapsed, the stirring is stopped, and the number of times of drainage is incremented by 1 to drain. Stop drainage after stopping drainage to the water level. If the number of times of drainage is less than N times at that time, additional rinse is performed again. If the number of times of drainage is N times or more, the irrigation rinse is finished.

  In this embodiment, when it is determined that sufficient water supply rinse can be performed by measuring the water supply time, substantially the same operation as the conventional water supply rinse is performed, and the water supply rinse time can be prevented from extending. . If it can be determined that the flow rate is otherwise small, it is possible to increase the rinsing effect without increasing the pain of the cloth by only supplying water without stirring.

1: Body and outer frame, 2: Outer tank, 3: Inner tank,
4: pulsator, 5: main motor, 6: drain valve,
7: Drain hose, 8: Drain, 9: Motor for driving drain valve,
10: control board, 11: clutch, 12: feed valve,
13: sofna valve, 14: control panel, 15: water supply hose,
16: Safety lever,

101: Power supply, 102: Auto off relay,
103: drive circuit, 104: microcomputer,
111: Main motor, 112: Circulation pump,
113: Bath water pump, 114: Water supply valve,
115: Drain valve, 116: Softener valve,
117: lid lock,
121: Water level sensor, 122: Temperature sensor,
123: Rotation sensor, 124: Safety lever,
125: non-volatile storage device,
131: Operation switch, 132: LED display circuit,

Claims (3)

An outer tank disposed within the outer frame,
An inner tub rotatably mounted in the outer tub and containing laundry;
A pulsator disposed inside the inner tank and a motor for driving the inner tank or the pulsator;
A clutch for switching the connection between the motor and the inner tank or a pulsator, a water supply means for supplying water to the inner tank, a drainage means for discharging water supplied to the inner tank, the motor, the clutch, the water supply means and the drainage means are controlled. Equipped with operation control means,
The operation control means has a plurality of procedures of a rinse operation for performing stirring while supplying water from the water supply means, and measures the water supply flow rate in the rinse operation of the water supply means, and the measured water supply flow rate
A washing machine characterized by switching a rinse operation. A washing machine according to claim 1, wherein
The operation control means drains when the specified water level is exceeded during the rinsing operation of stirring while supplying water, calculates the number of times of draining, and if the drainage is equal to or less than a predetermined number of times, the preset additional rinse A washing machine characterized in that it operates. The washing machine according to claim 2, wherein
A washing machine characterized in that water is supplied to a specified water level without stirring in an additional rinsing operation, and then stirring is performed and drainage is performed after the stirring is completed.

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