JPH0866575A - Combination dehydrator and washer - Google Patents

Abstract

PURPOSE: To perform bubble riding through even for washing of any kind of cloth quality smoothly in dehydration and to perform the dehydration in a time suitable for cloth quality in a dehydrator which performs (gradual dehydration). CONSTITUTION: The cloth quality of the washing housed in a washing tub is judged, and when it is judged as the one of stiff quality in a dehydration process, the dehydration is executed by the content of dehydration mode A, and when it is judged as the one of soft quality, the dehydration is executed by the content of dehydration mode C, and when it is judged as the one of quality other than that, the dehydration is executed by the content of dehydration mode B. In such a case, such control is performed that the lower the dehydration ratio applied to the colth quality (stiff quality), the more the number of steps and time in the ascending mode of rotating speed increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined washing and dewatering machine for dewatering laundry by gradually increasing the rotational speed of a washing tub from a low speed to a high speed during dewatering.

[0002]

2. Description of the Related Art Conventionally, in a washing machine for combined use of dehydration,
For the purpose of reducing noise at the start of dehydration and smoothing out bubbles during dehydration (preventing generation of bubbles due to the detergent component during dehydration), the laundry containing the laundry in the dehydration process Dewatering the laundry by gradually increasing the rotation speed of the tub from low speed to high speed,
There is one that is designed to do so-called "slowly dehydration".

[0003]

However, in the conventional spin-drying washing machine of this type, the mode for increasing the rotation speed of the washing tub in the spin-drying process is controlled in the same mode regardless of the quality of the laundry. For this reason, especially in the case of laundry having a low dehydration rate such as a rough cloth, foam breakage is poor, and it may not be possible to smoothly carry out foaming during dehydration. On the other hand, if you try to perform dehydration control based on a cloth material with a low dehydration rate, the dehydration time will be longer than necessary for a flexible cloth material with a high dehydration rate, and eventually the overall washing time. It will be longer than necessary.

Therefore, an object of the present invention is to carry out so-called "slowly dehydration", so that it is possible to smoothly carry out foaming during laundry dehydration for laundry of any cloth quality.
It is an object of the present invention to provide a combined washing machine capable of performing dehydration in a time suitable for the quality of cloth.

[0005]

According to a first aspect of the present invention, a laundry tub in which laundry is stored is rotated at the time of spin-drying, and the rotational speed thereof is increased stepwise from a low speed to a high speed. In a combined dehydrator and washing machine equipped with a control means adapted to perform dehydration, a cloth quality judging means for judging the cloth quality of the laundry is provided, and the control means changes the cloth quality based on the judgment result of the cloth quality judging means. Accordingly, the mode of increasing the rotation speed of the washing tub at the time of dehydration is made different.

In this case, it is preferable that the control means performs control so that the lower the dehydration rate of the cloth is, the more the number of stages or the time in the rising mode of the rotation speed of the washing tub is increased (claim 2).

According to a third aspect of the present invention, the laundry is dehydrated by rotating the washing tub in which the laundry is stored and gradually increasing the rotation speed from a low speed to a high speed during the dehydration. In the combined washing and dehydration machine including the control means, a course selecting means for selecting one washing course from a plurality of washing courses is provided, and the controlling means increases the rotation speed of the washing tub at the time of dehydration for each washing course. It is characterized by different modes.

In this case, it is preferable that the control means controls the number of stages or the time in the mode of increasing the rotation speed of the washing tub to increase as the course is used for laundry having a lower dehydration rate (claim 4). .

[0009]

According to the means of claim 1, in the "draining dehydration", the mode of increasing the rotation speed of the washing tub is performed in a mode according to the quality of the laundry, so that the quality of the laundry is improved. It is possible to perform suitable dewatering, to smoothly carry out bubbles through a laundry of any cloth quality during dewatering, and to make the dehydration time suitable for the cloth quality.

According to the second aspect of the present invention, the lower the dehydration rate of the cloth, the more the number of stages or the time in the mode for increasing the rotation speed of the washing tub is controlled so that the dehydration is more suitable for the cloth quality. It can be performed.

According to the third aspect of the present invention, in the "slowly dehydration", the mode of increasing the rotation speed of the washing tub is performed in a mode according to the washing course. Similar to the above, it is possible to perform dewatering suitable for the quality of the cloth, and to smoothly carry out bubbles through the dewatering of laundry of any cloth quality. Also, make the dehydration time suitable for the quality of the cloth. Is possible.

According to the means of claim 4, the number of steps or the time in the mode for increasing the rotation speed of the washing tub is controlled to increase as the course is used for laundry having a lower dehydration rate. Similar to the method described above, it becomes possible to perform dehydration more suitable for the cloth quality.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, FIG. 3 shows the entire structure of the washing machine for combined use of dehydration. In FIG. 3, the outer box 1
A water tub 2 is provided in the interior of the water tub 2 via an elastic suspension mechanism 3, a washing tub 4 also serving as a dehydrating tub is provided in the water tub 2, and an agitator 5 is provided at the bottom of the washing tub 4. It is set up.

A drive mechanism 7 having a motor 6 as a main component is arranged on the outer bottom portion of the water tub 2. The drive mechanism 7 selectively rotates the washing tub 4 and the agitator 5. . A drain valve 10 for draining water from the center of the bottom of the washing tub 4 through the drainage channel 8 and the drainage port 9 at the bottom of the water tub 2 is disposed below the water tub 2, and the drainage port 9 is located on the outer side thereof. It communicates with the air trap 11 for water level detection.

A dewatering hole 12 is formed only in the upper end of the washing tub 4, and a balance ring 13 is attached to the upper end of the washing tub 4. At the upper end of the water tank 2, the water shield ring 1 is located above the balance ring 13.
4 is attached to the water blocking ring 14, and the water injection part 1
An inner lid 16 having a number 5 is pivotably provided so as to be openable and closable. A top cover 17 is attached to the upper end of the outer box 2 above the water shield ring 14, and water is supplied toward the water injection part 15 at the rear part of the top cover 17, for example, a water supply valve driven by an electromagnet. 18 is provided, and a control unit 19 is provided at the front.
Is provided.

As shown in FIG. 4, the control unit 19 is provided with a control device 20 constituting a control means. The control device 20 includes a microcomputer, and detects signals from various switches 21 provided in the control unit 19 and rotation speeds of the motor 6 (rotation speeds of the washing tub 4 and the stirring body 5). For example, a detection signal from a rotation sensor 22 including a hall element and a detection signal from a water level sensor 24 that detects the water level in the washing tub 4 by air pressure from the air trap 11 via an air tube 23 are input. The water supply valve 18, the motor 6, and the drain valve 10 are controlled via the drive circuit 25 based on those signals and a control program stored in advance.

In this case, the control device 20 controls the washing tub 4
It functions as a laundry amount determination means for determining the amount of laundry stored therein and a cloth quality determination means for determining the cloth quality of the laundry. The rotation sensor 22 also functions as a rotation speed detecting means.

Next, the function of the control device 20 will be described with reference to FIGS. 1, 2 and 5. When the user operates the switch 21 to start the washing operation with the laundry stored in the washing tub 4, the control device 20 is activated.
First, as shown in FIG. 5, the amount of laundry is first determined (step S1). The amount of laundry is determined by, for example, rotating the washing tub 4 or the agitator 5 containing the laundry for a predetermined time, and determining the degree of rise or fall of the rotation based on the detection signal from the rotation sensor 22. The larger the amount of the laundry stored in the washing tub 4, the worse the rise and fall of the rotation. Therefore, the laundry amount can be determined.

After that, a water supply level is set according to the result of the laundry amount determination (step S2), water is supplied to the set water level (step S3), and then the quality of the laundry is determined (step S4). The determination of the cloth quality is performed by, for example, rotating the stirring body 5 in the normal and reverse directions for a predetermined time, and determining the variation degree of the normal and reverse rotations based on the detection signal from the rotation sensor 22. As the quality is "rougher", the variation degree of the forward and reverse rotations increases, so that the cloth quality can be determined.

After that, the washing process is started and the washing by rotating the stirring member 5 in the forward and reverse directions is executed for a predetermined time (step S5). Then, after the drain valve 10 is opened to drain the water (step S6), the process proceeds to the dehydration process. In this dehydration process, the control device 20 executes the dehydration by selecting one of the dehydration modes A to C shown in FIGS. 1 and 2 according to the cloth quality determined in step S4.

Specifically, first, it is judged whether or not the cloth quality is "stiff" (step S7), and then "stiff".
If it is determined that the dehydration mode is A, dehydration is executed in accordance with the content of the dehydration mode A (step S8). In the case of this dehydration mode A, the washing tub 4 is first rotated at a speed of 175 [rpm] for 40 seconds, then the speed is increased to 225 [rpm] and rotated for 50 seconds, and then the speed is increased to 275 [rpm]. For 40 seconds and then the speed is 450 [rp
m] and rotate for 35 seconds, and then increase to the maximum speed of 1000 [rpm] and rotate for a predetermined time.

If it is determined in step S7 that the cloth quality is not "stiff", the process proceeds to step S9 to determine whether the cloth quality is "supple".
If it is judged to be "supple", dehydration mode C
Dehydration is executed with the contents of (step S10). In the case of this dehydration mode C, first set the washing tub 4 to 450 [rpm].
Rotate for 15 seconds at maximum speed, then 100
Raise it to 0 [rpm] and rotate for a predetermined time.

If it is determined in step S9 that the cloth quality is not "supple" (in this case, the cloth quality is "standard"), dehydration is executed according to the contents of the dehydration mode B (step). S11). In the case of this dehydration mode B, the washing tub 4 is first rotated at a speed of 230 [rpm] for 30 seconds, and then the speed is increased to 300 [rpm].
Rotate for 0 seconds, then increase the speed to 450 [rpm] and rotate for 20 seconds.
Increase to [rpm] and rotate for a predetermined time.

When the dehydration process is completed, the process proceeds to the rinsing process. In this rinsing process, water rinsing and dehydration rinsing (step S12) and pool rinsing (step S13)
And do. Among them, the water injection / dehydration rinse is performed by rotating the washing tub 4 while controlling the opening / closing of the water supply valve 18 to inject the laundry in the washing tub 4 through the water injection portion 15 of the inner lid 16. The rinsing is performed by stirring the laundry with the stirring body 5 while the water is stored in the washing tub 4 up to the set water level.

After that, the drain valve 10 is opened to drain water (step S14), and then the final dehydration step is performed. In this final dehydration step, as in the case of the dehydration step after the washing step, one of the dehydration modes A to C is selected and dehydration is executed according to the cloth quality determined in step S4 (steps S15-). S19).

According to the first embodiment, the laundry is dehydrated by gradually increasing the rotation speed of the washing tub 4 from the low speed to the high speed at the time of the dehydration. In this case, since the mode of increasing the rotation speed of the washing tub 4 is performed in a mode suitable for the cloth quality of the laundry, it is possible to perform dehydration suitable for the cloth quality, and to wash foam of any cloth quality at the time of dehydration. It is possible to smoothly ride through, and the dehydration time can be set to a time suitable for the cloth quality.

In this case, the lower the dehydration rate of the cloth (the rougher the cloth is), the more the number of steps and the time in the mode of increasing the rotation speed of the washing tub 4 are controlled, so that the cloth quality is further improved. Suitable dehydration can be performed.

FIG. 6 shows a second embodiment of the present invention. This second embodiment differs from the above-mentioned first embodiment in the following points. That is, the control device 20 in FIG.
In advance, a plurality of selection courses, in this case, three selection courses of "blanket course", "standard course", and "hand washing course" are set. Further, the various switches 21 are provided with a course selection switch functioning as a course selection means, and one course can be selected from three courses by the course selection switch.

When performing the dehydration step immediately after the washing step and the final dehydration step, the controller 20 performs the dehydration mode shown in FIG. 6 for each of the "blanket course", "standard course" and "hand wash course". The contents are configured to perform dehydration.

In the case of the second embodiment, the following points differ from the flowchart of FIG. First, it is not necessary to determine the cloth quality in step S4. Further, in steps S7 and S9, what the laundry course is is determined instead of the determination of the cloth quality. First, in step S7, it is determined whether or not the laundry course selected by the course selection switch is a "blanket course". If it is determined that the laundry course is a "blanket course", dehydration is performed in the dehydration mode A. Is executed (step S8). If it is not the "blanket course", it is determined in step S9 whether it is the "hand washing course", and if it is the "hand washing course", dehydration is executed in the content of the dehydration mode C (step S10). . If it is determined that it is not the "hand-washing course" (in this case, the "standard course"), dehydration is executed in the content of the dehydration mode B (step S11).

Also in the final dewatering process, as in the above dewatering process, one of the dewatering modes A to C is selected according to the selected washing course to carry out dewatering (steps S15 to S19). .

Here, in general, when washing in the "blanket course", the cloth quality is often stiff and has a low dehydration rate, and when washing in the "hand washing course", the cloth quality is supple. Many have a high dehydration rate. Therefore, also in such a second embodiment, like the above-described first embodiment, it is possible to perform dehydration suitable for the cloth quality, and it is possible to obtain the same operational effect as the first embodiment.

The present invention is not limited to the above embodiments, but can be modified or expanded as follows. For example, the rotation sensor 22 may be a rotary encoder instead of the hall element.

[0034]

According to the combined dewatering and washing machine of the first aspect of the present invention, the laundry is dehydrated by gradually increasing the rotation speed of the washing tub from low speed to high speed during dehydration. By doing the mode of increasing the rotation speed of the washing tub in a mode according to the cloth quality of the laundry, it is possible to perform dewatering suitable for the cloth quality,
It is possible to smoothly carry out bubbles through dehydration for laundry of any cloth quality, and the dehydration time can be set to a time suitable for the cloth quality.

According to the washing machine for combined dewatering according to the second aspect, as the dewatering rate is lower, the number of stages or the time in the mode of increasing the rotation speed of the washing tub is controlled so as to increase the number of cloths. It becomes possible to perform dehydration suitable for the quality.

According to the dehydrating and washing machine of the third aspect, in the "slowly dehydrating" washing machine, the mode for increasing the rotation speed of the washing tub is performed in a mode according to the washing course. Similar to the case of claim 1, it is possible to perform dewatering suitable for the cloth quality, and it is possible to smoothly carry out foaming during laundry dehydration for laundry of any cloth quality, and also the dewatering time is suitable for the cloth quality. It is possible to have different time.

According to the washing machine with combined dehydration of claim 4, the course used for laundry having a low dehydration rate,
By controlling so as to increase the number of stages or the time in the mode of increasing the rotation speed of the washing tub, it becomes possible to perform dehydration more suitable for the cloth quality, as in the case of the second aspect.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention and showing the control contents of each dehydration mode.

FIG. 2 is a diagram showing a relationship between rotation speed and time in each dehydration mode.

FIG. 3 is a vertical sectional side view of the washing machine for combined use of dehydration.

FIG. 4 is a block diagram showing an electrical configuration.

FIG. 5 is a flowchart showing the control contents of the control device.

FIG. 6 shows a second embodiment of the present invention, and is a diagram showing the control contents of the dehydration mode in each washing course.

[Explanation of symbols]

4 is a washing tub, 6 is a motor, 12 is a dehydration hole, 20 is a control device (control means, cloth quality determination means), 21 is various switches (course selection means), and 22 is a rotation sensor (rotation speed detection means). .

Claims (4)

[Claims] 1. At the time of dewatering, the washing tub accommodating the laundry is rotated, and a control means is provided for dewatering the laundry by gradually increasing the rotational speed from a low speed to a high speed. In the combined washing / dehydrating washing machine, a cloth quality judging means for judging the cloth quality of the laundry is provided, and the control means determines the rotation speed of the washing tub at the time of dehydration according to the cloth quality based on the judgment result of the cloth quality judging means. Washing machine for combined use of dehydration, which is characterized by different rising modes. 2. The washing machine with combined dehydration according to claim 1, wherein the control means increases the number of stages or the time in the mode of increasing the rotational speed of the washing tub as the cloth quality having a lower dehydration rate is higher. 3. A control means for rotating the washing tub containing the laundry at the time of dehydration and gradually increasing the rotation speed from a low speed to a high speed to dehydrate the laundry. In the combined washing and dehydration washing machine, the washing machine is provided with a course selecting means for selecting one washing course from a plurality of washing courses, and the control means varies the rising mode of the rotation speed of the washing tub at the time of dehydration for each washing course. A washing machine for combined use of dehydration. 4. The combined washing and dewatering laundry according to claim 3, wherein the control means increases the number of stages or the time in the mode of increasing the rotation speed of the washing tub as the course used for laundry having a lower dewatering rate. Machine.