JPH10235071A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable reducing washing time by reducing the rate at which the washing is entangled in a washing machine which executes at least washing and rinsing. SOLUTION: A pulsator 2 is freely rotationally placed on the bottom of a washing/dehydrating tub 3 and is driven by a motor 11, and the motor 11 is controlled by a controller 18. The washing machine includes a washing stroke in which the pulsator 2 is reversed to the right and left with an intermission to wash clothing; and, after the pulsator 2 has been driven for a time during which the washing 19 rotates slightly to the right or left inside the washing/ dehydrating tub 3, it is stopped for a shorter time than the time during which the washing 19 is rotated by inertia, so that the machine is driven and stopped repeatedly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to at least laundry,
The present invention relates to a washing machine for performing rinsing.

[0002]

2. Description of the Related Art Conventionally, a washing machine is configured to execute at least washing and rinsing, and a stirring method is mainly used for washing and rinsing processes. After the laundry is put into the washing tub and water is supplied to a predetermined water level, stirring is performed with a pulsator.

The agitation is configured to repeat "right rotation / pause / left rotation / pause".
The time is set to about 1.2 seconds to 2.0 seconds so that the laundry is sufficiently rotated. The pause time is set to 0.6 seconds to 1.0 second so that the laundry rotates in the reverse direction after the rotation of the laundry has stopped.

[0004]

However, in the conventional stirring period, since the laundry rotates very well up, down, left and right in the washing tub, there is a problem that the laundry is very entangled by the end of the laundry. . If the laundry gets entangled, the centrifugal force applied at the time of dehydration in the next process will force the tangled laundry to be pulled and adhered to the periphery of the washing tub. It is very difficult to remove items from the washing tub.

In addition, if the washing time is shortened to prevent the laundry from being entangled, there is a problem that sufficient washing performance cannot be secured.

An object of the present invention is to solve the above-mentioned problems and to reduce the entanglement of laundry and shorten the washing time.

[0007]

According to the present invention, in order to achieve the above object, a pulsator is rotatably disposed at the bottom of a washing tub, driven by a driving means, and the driving means is controlled by a control means. The pulsator is flipped to the left and right across the pause to wash the clothes, and the laundry is rotated right or left in the washing tub in small increments. Pause for a shorter time,
This is provided with a washing process in which the driving and the rest are repeated.

By rotating the laundry little by little, the entanglement of the laundry can be reduced. In addition, the idle time is short, and the rotational force is applied in the opposite direction while the laundry is rotating by inertia. Is added, the washing effect can be enhanced, and the washing time can be reduced without deteriorating the washing performance.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a pulsator rotatably disposed at the bottom of a washing tub,
Driving means for driving the pulsator, and a control means for controlling the driving means, the pulsator is turned left and right across the pause to wash the clothes, the laundry is right or left in the washing tub After driving the pulsator for the time to rotate to the left in small increments, the laundry is paused for a shorter time than the time for the laundry to rotate by inertia, and it has a washing process that repeats driving and pausing, by rotating the laundry in small increments. In addition, the tangling of the laundry can be reduced, and the idle time is short, the rotating force is applied in the opposite direction while the laundry is rotating by inertia, and the twisting force is always applied to the laundry, so that the washing is performed. The effect can be enhanced, and the washing time can be reduced without deteriorating the cleaning performance.

According to a second aspect of the present invention, in the first aspect of the present invention, the time during which the pulsator is driven in small increments is set to about 1/3 to 1 /
The rotation time is two times, and the pause time is about one third or less of the drive time.
By not rotating more than two turns, it is possible to reduce the entanglement of the laundry, and also, the pause time is short, and a rotating force is applied in the opposite direction while the laundry is rotating by inertia, so that Since the kinking force is added to the laundry, the washing effect can be enhanced, and the washing time can be reduced without lowering the washing performance.

According to a third aspect of the present invention, in accordance with the first or second aspect of the present invention, based on the amount of laundry,
The drive time and the pause time are configured to be changed.When the amount of laundry is large, the drive time and the pause time are increased, and when the amount of laundry is small, the drive time and the pause time are reduced. By doing so, even if the amount of laundry changes, the entanglement of the laundry can be reduced, and the cleaning effect can be enhanced, so that the washing time can be reduced without lowering the cleaning performance.

The invention described in claim 4 is the above-mentioned claim 1-
In the invention described in Item 3, the laundry is configured to wash under conditions of a low bath ratio where the upper part of the laundry always comes above the water surface, the buoyancy applied to the laundry is reduced, and the laundry floats on the washing liquid. Entanglement can be reduced without excessive rotation. In addition, the power of the washing machine is directly transmitted from the pulsator to the laundry, so that the washing effect can be enhanced, the washing time can be reduced, and the laundry can be washed well without being damaged.

[0013] The invention described in claim 5 is the above-mentioned claim 1-
4. In the invention described in 4, the water circulating means for pumping up the washing water from the bottom to the top of the washing tub is provided so as to supply the washing water to the laundry on the water surface, and the washing water comes out on the water surface. The washing water is supplied to the laundry, and the small amount of the washing water is effectively used, so that the laundry can be washed well without entanglement.

[0014] The invention described in claim 6 is the above-mentioned claim 1-
5. In the invention described in 5, the stirring is performed a plurality of times during the washing process with a longer driving time than the driving time of the washing process, and the vertical position of the laundry is switched. Washing variation depending on the position can be reduced, and even at a low bath ratio, washing can be performed firmly without entanglement of laundry.

[0015] The invention described in claim 7 is the above-mentioned claim 1-
In the invention described in Item 6, the pulsator is repeatedly driven and stopped in the rinsing process in the same manner as in the washing process, so that the laundry can be firmly rinsed without being entangled.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIG. 1, a water receiving tub 1 includes a washing and dewatering tub (washing tub) 3 in which a pulsator 2 is rotatably arranged at a bottom portion. It is hung on the outer frame 5. A plurality of lint capture waterway covers 6 are attached to the inner surface of the washing and dewatering tub 3 to form a lint capture waterway 7 with the washing and dewatering tub 3. Pulsator 2
And a pump chamber 9 formed on the outer periphery of the blade 8 is communicated with the lint capturing channel 7. A detachable lint filter 10 is provided above the lint catching channel 7.

The motor (driving means) 11 includes a V-belt 12
And the pulsator 2 via the speed reducer / clutch 13
Alternatively, the washing and dewatering tub 3 is driven. The water supply valve 14 supplies water to the washing and dewatering tub 3 via the nozzle 15, and the drainage valve 16 drains the washing liquid in the washing and dewatering tub 3. Washing and dewatering tub 3
Is covered with a lid 17.

The control device (control means) 18 includes the motor 1
1. The water supply valve 14, the drain valve 16 and the like are controlled to sequentially control each process of washing, rinsing, and dehydrating, and the pulsator 2 is rotated left and right with a pause to wash clothes. After the pulsator 2 is driven for a short time to rotate right or left in the washing and dewatering tub 3, the laundry 19 is paused for a shorter time than the time for the laundry 19 to rotate by inertia, and the driving cycle is repeated. It has. Laundry 19
Is almost submerged in the water in the washing and dewatering tub 3.

The operation at the time of washing in the above configuration will be described. First, the laundry 19 is put into the washing and spin-drying tub 3, and when a start button (not shown) provided on the upper surface of the controller 18 is pressed, the amount of the laundry 19 is detected according to a program incorporated in the controller 18. Then, water is supplied to a water level suitable for the amount of laundry detected by the water supply valve 14, and a stirring process is started.

The time limit of the stirring is set in advance for each water level according to the change in the amount of the laundry. When the pulsator 2 is driven, the laundry 19 is moved right or left by about 1 /
Rotate 3 to 1/2 times. Subsequently, the pause time of the pulsator 2 is shortened, and the pulsator 2 is rotated in the opposite direction while the laundry 19 is rotating by inertia, thereby performing washing in a manner of twisting the laundry 19 left and right.

The driving of the pulsator 2 and the rotation of the laundry will be described with reference to FIG. 2 (a) and 2 (b) show the state of driving the pulsator and the rotation of the laundry, respectively, according to the present invention. On the other hand, FIGS. 7 (a) and 7 (b) show the driving state of the pulsator of the conventional washing machine and the rotation of the laundry. Compared with the related art, in the present invention, the laundry is rotated left and right in small increments, and the laundry is washed by twisting the laundry without turning slowly by inertia. The inventors have confirmed that washing with such a stirring method can reduce entanglement of laundry.

This will be described with reference to FIG.
The take-out rate is a count of how many times the laundry can be taken out after washing and dehydrating, and this number is divided by the total number of laundry pieces put in. If the laundry is taken out one by one without getting tangled at all Since the count number and the number of inserted sheets have the same value, the takeout rate is 100%. This numerical value is used to indicate the degree of laundry entanglement. The rotation rate of the laundry when the conventional pulsator is driven is set to about 1, and the rotation rate of the laundry when the pulsator of the present invention is driven is set to about 1/2, and the takeout rates are compared. The takeout rate is larger in the present invention. The result was obtained.

The cleaning performance will be described with reference to FIG. As shown in FIG. 4, when the drive time during which the laundry rotates 1/3 or 1/2 is fixed and the pause time is changed to 1/3 or 1/2 of the drive time, the shorter pause time is used. That is, it was confirmed that the cleaning performance was high when the driving time was 1/3.

Further, as shown in FIG. 3, the laundry is less likely to be entangled when the rotation is smaller, but it is better to rotate the laundry more in order to enhance the washing performance, that is, 1/2 rotation rather than 1/3 rotation. In order to ensure a predetermined level of cleaning performance, the stirring time is set in consideration of the balance between rotation and driving time. By the washing method set in this way, washing with less entanglement can be performed without reducing the washing performance even if the washing time is shortened.

(Embodiment 2) Control device 18 in FIG.
Detects the amount of the laundry 19 according to the installed program, and, based on the amount of the laundry detected from the water supply valve 14,
Low bath ratio where the top of the laundry is always above the water surface (eg, 7
The water is supplied up to the water level shown below, and the agitating process is started. Other configurations are the same as those in the first embodiment.

When the pulsator 2 is driven under the condition of a low bath ratio in which the upper portion of the laundry always rises above the water surface, the buoyancy applied to the laundry decreases, and the laundry floats on the washing liquid. Entangling can be further reduced without excessive rotation. Further, the washing machine power is directly transmitted from the pulsator 2 to the laundry, so that the washing effect can be enhanced, and the washing time can be shortened and the laundry can be thoroughly washed without damaging the laundry.

(Embodiment 3) As shown in FIG. 5, the pump chamber 9 on the outer periphery of the blade 8 on the back surface of the pulsator 2 communicates with a plurality of circulation water passages 20. A discharge port 21 opened toward the inside of the washing tub 3 is provided at an upper portion of the plurality of circulation water channels 20, and the washing water is supplied from the discharge port 21 to the laundry 19 on the water surface. In addition, the low bath ratio (for example, 7 or less) where the upper part of the laundry always comes above the water surface with respect to the amount of the laundry.
It is configured so that water is supplied up to the water level and enters the stirring process.

Also, during the washing process, the laundry is reduced to 1/3.
Alternatively, agitation is performed two to three times in a drive time longer than the drive time for 1/2 rotation (for example, four times in the drive time for the laundry to rotate one to two times), and the vertical position of the laundry is switched. It is composed. Other configurations are the same as those in the first embodiment.

When the pulsator 2 is driven under the condition of a low bath ratio in which the upper portion of the laundry 19 always stays above the water surface, the operation of the pulsator 2 will be described. The washing water is pumped up by the blade 8 and supplied through the pump chamber 9 and the circulation water passage 20 from the discharge port 21.

In addition, even if the washing water is supplied, the washing machine force from the pulsator 2 is transmitted to the upper portion of the washing 19 little, so that the washing variation depending on the position of the washing occurs. In order to reduce this, during the washing process, the agitation is performed two or three times with a longer driving time than the driving time for the laundry to rotate 1/3 or 1/2, and the vertical position of the laundry is switched. After that, the stirring of the washing process is performed again. As a result, cleaning variations can be reduced.

As for the cleaning performance, as shown in FIG.
It has been confirmed that when the bath ratio is changed into two types of m and n (where m <n) during the driving time with less entanglement and washing is performed, m having a smaller bath ratio has higher cleaning performance. From these results, it is possible to effectively use a small amount of washing water and to wash the laundry firmly without entanglement.

Also, by performing the same agitation during rinsing as during washing, it is possible to quickly and firmly rinse the laundry without entanglement.

In each of the above-described embodiments, the washing machine including the washing and dewatering tub 3 in which the pulsator 2 is rotatably disposed at the bottom in the water receiving tub 1 has been described. As described above, a washing machine having a washing tub in which a pulsator is rotatably disposed at the bottom can be similarly configured, and the same operation and effect can be obtained.

[0035]

As described above, according to the first aspect of the present invention, the pulsator rotatably disposed at the bottom of the washing tub, the driving means for driving the pulsator, and the driving means With control means for controlling, the pulsator is turned to the left and right across the pause to wash the clothes, and after driving the pulsator for the time when the laundry is rotated to the right or left in the washing tub, Since the laundry is paused for a shorter period of time than the time it rotates by inertia, and provided with a washing process in which the driving and the pause are repeated, by rotating the laundry in small increments, the entanglement of the laundry can be reduced, and the pause time can be reduced. Is short, rotating force is applied in the opposite direction while the laundry is rotating by inertia, and the twisting force is always applied to the laundry, so that the washing effect can be enhanced and the washing time can be reduced without deteriorating the washing performance. Can be shortened .

According to the second aspect of the present invention, the time during which the pulsator is driven in small increments is a time during which the laundry rotates right or left approximately 1/3 to 1/2 in the washing tub, Since the time is set to about one third or less of the driving time, by preventing the laundry from rotating more than 1/2 turn, it is possible to reduce the entanglement of the laundry,
The pause time is short, and the rotating force is applied in the opposite direction while the laundry is rotating by inertia, and the twisting force is constantly applied to the laundry, so that the washing effect can be enhanced and the washing performance is not degraded. You can save time.

According to the third aspect of the present invention,
Since the driving time and the pause time are changed based on the amount of the laundry, even if the amount of the laundry changes, the entanglement of the laundry can be reduced and the cleaning effect can be enhanced. As a result, the washing time can be reduced without deteriorating the washing performance.

According to the fourth aspect of the present invention, since the washing is performed under the condition of a low bath ratio in which the upper part of the laundry always rises above the water surface, the buoyancy applied to the laundry is reduced, and the laundry is washed. The entanglement can be reduced without the object floating in the washing liquid and rotating too much. In addition, the power of the washing machine is directly transmitted from the pulsator to the laundry, so that the washing effect can be enhanced, the washing time can be reduced, and the laundry can be washed well without being damaged.

According to the fifth aspect of the present invention, the water circulating means for pumping up the washing water from the bottom to the top of the washing tub is provided, and the washing water is supplied to the laundry on the water surface. In addition, the washing water is supplied to the laundry on the surface of the water, and the washing water can be effectively used, and the laundry can be washed without being entangled.

According to the sixth aspect of the present invention, during the washing process, a plurality of agitations are performed with a longer driving time than the driving time of the washing process, and the vertical position of the laundry is switched. With this configuration, it is possible to reduce the variation in washing depending on the position of the laundry, and it is possible to wash the laundry without entanglement even at a low bath ratio.

According to the seventh aspect of the present invention, the pulsator is repeatedly driven and stopped in the rinsing process in the same manner as in the washing process, so that the laundry can be firmly rinsed without being entangled.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a washing machine according to a first embodiment of the present invention.

FIG. 2 is an operation time chart of main parts of the washing machine.

FIG. 3 is a characteristic diagram showing a relationship between a cloth rotation and a takeout rate of the washing machine.

FIG. 4 is a characteristic diagram showing a relationship between a stirring pause time and a washing performance of the washing machine.

FIG. 5 is a longitudinal sectional view of a washing machine according to a second embodiment of the present invention.

FIG. 6 is a characteristic diagram showing a relationship between a bath ratio and a cleaning performance of the washing machine.

FIG. 7 is an operation time chart of a main part of a conventional washing machine.

[Explanation of symbols]

 2 Pulsator 3 Washing and spin-drying tub (washing tub) 11 Motor (drive means) 18 Control device (control means) 19 Laundry

Claims (7)

[Claims] 1. A pulsator rotatably disposed at the bottom of a washing tub, a driving unit for driving the pulsator, and a control unit for controlling the driving unit, the pulsator comprising:
In a washing machine that reverses left and right after a pause to wash clothes, after the pulsator is driven in the washing tub, the pulsator is driven for a short time to the right or left, and then the time for the laundry to rotate by inertia is shorter. A washing machine with a washing process that pauses for hours and repeats driving and resting. 2. The time for driving the pulsator in small increments is the time for the laundry to rotate right or left about 1/3 to 1/2 in the washing tub, and the pause time is about 3 minutes compared to the driving time. The washing machine according to claim 1, wherein the time is not more than 1. 3. The washing machine according to claim 1, wherein the driving time and the pause time are changed based on the amount of the laundry. 4. The washing machine according to claim 1, wherein the washing is performed under a condition of a low bath ratio in which an upper portion of the laundry always comes above the water surface. 5. The washing machine according to claim 1, further comprising a water circulation means for pumping up the washing water from the bottom to the top of the washing tub, and supplying the washing water to the laundry on the water surface. Washing machine. 6. A method according to claim 1, wherein a plurality of agitations are performed during the washing process with a longer driving time than the driving time of the washing process, and the vertical position of the laundry is switched. The washing machine according to the item. 7. The pulsator according to claim 1, wherein the pulsator is repeatedly driven and stopped during the rinsing process as in the washing process.
The washing machine according to any one of the preceding claims.