JPS629359B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of operating a dehydrator having a so-called dewatering and rinsing function.

In the case of a two-tub washing machine equipped with a dehydrator that has a dehydrating and rinsing function, the laundry after washing with detergent can be rinsed and dehydrated by the dehydrator.
After washing with detergent, the laundry is transferred to a spinner to remove the detergent solution, then returned to the washing tub for rinsing, and finally dehydrated again in the spinner. This eliminates the problem of having to transfer it over and over again, making it very convenient to use. However, with conventional methods, when finishing the laundry with a soft finishing agent, for example, the laundry must be transferred to the washing tub after rinsing, and the washing operation must be carried out to mix well with the water containing the finishing agent. However, this was the only problem in use that remained unresolved. Of course, it is possible to perform dehydration and rinsing while supplying water containing a finishing agent to the laundry, but this would cause the spinning basket to spin too high.
The finishing agent does not adhere well to the laundry, and in the end, finishing agent, water, electricity, etc. are wasted, and it is difficult to achieve the intended purpose.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method for operating a dehydrator that can effectively apply a finishing agent to laundry.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a washing machine with a dehydrator will be specifically described below with reference to the drawings.

First, in FIG. 1, 1 is an outer box of a washing machine, and inside this outer box 1, a washing tub 2 and a dewatering tank 3 are arranged side by side.
A stirring blade 5 driven by a washing motor 4 is disposed at the inner bottom of the washing tub 2. Further, a dewatering basket 7 driven by a dehydrating motor 6 is disposed in the dehydrating receiving tank 3, and a water sprinkling tube 8 is erected in the center of the dehydrating basket 7. Of the inner cover 10 and outer cover 11 for opening and closing the laundry entrance/exit 9 to the dehydration basket 7, a water injector 12 for injecting water into the water spray cylinder 8 is attached to the lower surface of the inner cover 10. The water spray tube 8 is made of sintered resin, for example, and is integrally molded so that there are countless water-permeable micropores in the wall, but it is also possible to use a metal pipe with a large number of small holes. good. On the other hand, 1
Reference numeral 3 denotes an operation box erected at the rear of the upper part of the outer box 1, and this operation box 13 includes a water supply solenoid valve 1 in addition to a washing timer 14, a dehydration timer 15, etc.
6 and lever 17, and by switching the switch 18, the water from the solenoid valve 16 is transferred to the washing tub 2 or to the water injection via the washing side waterway 19 or the dewatering side waterway 20. It is configured so that it can be selectively supplied to the container 12. Furthermore, as shown in FIG. 2, the operation box 13 is provided with a container 21, and when a predetermined amount of finishing agent solution is stored in the container 21, the solution flows through an outlet 21a having a relatively small diameter. The outflow amount is adjusted by the throttling action of
Drop injected into 0.

The electrical circuit configuration on the dehydrator side will be explained with reference to FIG. 3. Numeral 22 is a lid switch that is closed when the outer lid 11 of the dehydrator is closed, and 23 is a lid switch that is used in the "dehydration rinsing" process, which will be described later. A dewatering selection switch 23 is used to select whether or not to proceed to the "dewatering" stage after the completion of the "finishing" stage. Further, 26 is a buzzer for notifying the end of the above-mentioned "dehydration" process, and 27 is a water injection switch that is switched in conjunction with switching of the knob 18 by the lever 17. On the other hand, the dehydration timer 15 includes a timer motor 28 and a plurality of cam switches 29 to 33 that are opened and closed by a group of cams using the timer motor 28 as a drive source, and the dehydration motor 6,
The water supply solenoid valve 16, the buzzer 26, and the switches 22, 23, and 27 are connected as shown in FIG. Each of the cam switches 29 to 33 of the dewatering timer 15 opens and closes as shown in FIG. 4, and the hatched portions indicate the closing periods. That is, the dehydration timer 15 has two operating bands, which are represented by one rotation of the knob 34 as shown in FIG. It is divided into an operating band indicated by the angle range of
The B operation zone consists of a newly created "finishing" process and a "dewatering" process immediately after it. Of the cam switches 29 to 33 of the dehydration timer 15, the cam switch 33 acts as an intermittent drive cam switch that intermittently energizes the dehydration motor 6 during the "finishing" process, and is used throughout both operating bands A and B. The period is alternately closed for 3 seconds and opened for 6 seconds. Also, the cam switch 32 is set to "finish".
During the stroke, the energizing path of the dehydration motor 6 is connected to the power source 3 through or without the intermittent drive cam switch 33.
It acts as a selection cam switch connected to the 5 side, and during the first 3 minutes of the "finishing" process set for 4 minutes, the contact pieces (c and a) are closed, and for the latter 1 minute, they are closed. Switches to closing between pieces (c-b). During the "dehydration rinsing" process, the cam switch 32 maintains a state in which the 1-minute joint piece (ca) is closed during the "dehydration rinsing" process, which is set for 9 minutes, and a state in which the 1-minute joint piece c is in contact. A disconnected state in which neither side a nor b is connected is repeated alternately, and both sides are "dehydrated" after the "dehydration rinsing" process and the "finishing" process.
During the process, the closed state between the contact pieces (c and b) is maintained during each "dehydration" process, which is set for 3 minutes.

When the water injection changeover switch 27 is set to close the contacts (c-b), it is possible to manually control the water supply electromagnetic valve 16 to turn on or off when water is supplied to the washing tub 2 side.

Next, the operation of the above configuration will be explained. To dehydrate and rinse the laundry that has been washed with detergent in the washing tub 2, the laundry is transferred to the space surrounding the water spray tube 8 in the dehydration basket 7, and the inner lid 10 and outer lid 11 are closed (the lid switch is turned on). 22 closed), then the lever 17 switches the pot 18 to the water supply on the water injector 12 side (closes the contact piece (ca) of the water injection changeover switch 27), and closes the dewatering selection switch 23 between the contact pieces (ca). Set the timer to close, and then turn the spin timer 15 knob 3.
4 to set the start point of the "dehydration rinse" process. As a result, each cam switch 29 to 33
is in the open/close state as shown in FIG. 4, the timer motor 28 is energized via the cam switch 31 to start timed operation, and the water supply solenoid valve 16 is energized via the cam switch 29 and the water injection changeover switch 27. At the same time, the dewatering motor 6 is energized via the contacts (c-b) of the cam switch 32. Then, the dewatering basket 7 is driven to increase its rotational speed, and water is supplied from the water supply solenoid valve 16 into the water injector 12 and injected into the water spray tube 8 from its outlet 12a. The water injected into the water spray tube 8 is vigorously jetted out from the water-permeable micropores in the peripheral wall toward the surrounding laundry 36 due to its water head and rotating centrifugal force, and then the laundry 36 is spouted out by the centrifugal dewatering action.
It passes through the inside and is discharged into the dehydration receiving tank 3 together with the detergent. Water is poured into the water spray barrel 8 without interruption by keeping the cam switch 29 closed and energizing the water supply solenoid valve 16 during the "dewatering and rinsing" process. is dehydration motor 6
is alternately energized and de-energized by the cam switch 32 in one-minute cycles, so that driving rotation and inertial rotation are repeated in one-minute cycles, and the rotational speed increases to approximately 1300 r.pm during each driving rotation. During each inertia rotation, the speed decreases to about 200 rpm (the rotation mode of this dehydration basket 7 is shown in FIG. 6). As described above, the rotational speed of the dehydration basket 7 repeatedly increases and decreases during the "dehydration and rinsing" process, so that in the low-speed rotation region, the water passing through the laundry 36 increases as shown by arrow C in FIG. 7a. As the speed decreases, the water permeates the laundry 36 evenly, and in the high-speed rotation range, as shown by arrow D in FIG. This is now actively carried out, and the dewatering and rinsing efficiency is improved by repeating such water infiltration and shaking off. Now, when the above-described "dehydration rinsing" process is completed and the process moves to the "dehydration" process, the cam switch 29 opens and the water supply solenoid valve 16 is cut off, so water injection into the water spray tube 8 is stopped, and Since the cam switch 32 continues to close the final contact piece (ca) in the "dehydration rinsing" process,
The dewatering motor 6 is continuously energized, and thereby the dehydrating basket 7 is continuously driven and rotates at a higher speed than the maximum rotation during the "dehydrating and rinsing" process (see Fig. 6), thereby shaking out moisture from the laundry 36. Dehydration is performed by cutting and removing. Then, at the end of the "dehydration" process, the cam switch 30 closes and the buzzer 26 sounds,
After that, all the cam switches 29 to 33 are turned off, and the dewatering operation ends.

The laundry 36 that has been dehydrated and rinsed as described above is finished with a fluorescent agent, a softening agent, etc. as follows. That is, the container 2 of the operation box 13
A finishing agent solution diluted with a small amount of water is poured into the container 1, and the knob 34 of the dehydration timer 15 is operated to set the start point of the "finishing" process. As a result,
Cam switches 29 and 31 close, and cam switch 32 closes the contact piece (ca).
At this time, the lid switch 22 is in the closed state, and the dehydration changeover switch 23 and the water filling changeover switch 2 are in the closed state.
7 is also in the state where the contact pieces (ca) are closed as in the case of dehydration and rinsing, so the timer motor 28
is energized via the cam switch 31 to start timed operation, the water supply solenoid valve 16 is energized via the cam switch 29 and the water injection changeover switch 27, and the dewatering motor 6 is switched to the cam switch 33 and cam switch 32 for intermittent drive. Contact piece (c-a)
The current is applied through the Then, water supply solenoid valve 1
Water from 6 passes through the dewatering side waterway 20 to the water injector 12
During this process, the finishing agent solution dripping into the water channel 20 from the container 21 is dissolved and becomes water containing the finishing agent, which is then sent from the water sprayer 12 to the water spray tube 8.
water is poured inside. On the other hand, since the dewatering motor 6 is turned on and off by the cam switch 33, which repeats opening and closing, the dewatering basket 7 is driven to rotate by the dewatering motor 6 for 3 seconds, and inertly rotates for 6 seconds. The dewatering basket 7 is driven by this intermittent driving.
Although the rotational speed gradually increases, the increase is gradual and not very high, and as a result, the average rotational speed of the dewatering basket 7 during the "finishing" process is about 200r.pm (approximately 200rpm). Average rotational speed during the "dehydration and rinsing" process (approximately 800 r.p.
m) (see Figure 6). The water containing the finishing agent poured into the water spray barrel 8 is ejected toward the laundry 36 due to its water head and rotational centrifugal force, passes through the laundry 36, and finally enters the dewatering tank 3. released within. At this time, as mentioned above, since the dehydration basket 7 is rotating at a lower speed than during dehydration and rinsing, the water containing the finishing agent does not pass through the laundry 36 all at once.
The finishing agent impinges on the fabric of the laundry 36 while permeating evenly, creating an ideal condition for adhesion of the finishing agent, making it possible to effectively adhere the finishing agent to the laundry 36. It becomes possible. When such an intermittent driving operation of the dewatering basket 7 is performed for 3 minutes, the cam switch 32 switches from closing between the contact pieces (ca) to closing between the contact pieces (c and b), so that the dehydration motor 6 is continuously energized for the remaining one minute of the "finishing" process, and as a result, the rotational speed of the dewatering basket 7 increases significantly (see FIG. 6). The reason why the dewatering basket 7 is continuously driven in the latter half of the "finishing" process is that in the previous intermittent drive, the force of water passing through the laundry 36 was weak (see arrow E in Figure 7c), Since the amount of finishing agent deposited on the laundry tends to be smaller than that on the laundry below, this is intended to compensate for this by increasing the rotational speed (see arrow F in Figure 7). Now, when the "finishing" process is completed and the transition to the "dewatering" process begins, the cam switch 29 opens and the water supply solenoid valve 16 is cut off, so water injection into the water spray tube 8 is stopped (at this time
The finishing agent solution stored in 1 is almost completely dripped out),
Since the cam switch 32 maintains the contact piece (c-b) closed in the latter half of the "finishing" process, the dehydration motor 6 is continuously energized, which causes the dehydration basket 7 to remain closed.
continues to increase the rotational speed to a high-speed rotation state, and dewaters the laundry 36. Of course, in this case,
The finishing agent once attached to the laundry 36 in the previous "finishing" process does not come off due to the dehydration action, and only moisture is mainly shaken off.

By the way, when performing the dehydration rinsing or finishing operations as described above, if the dehydration selector switch 23 is set to close the contacts (c-b), the ``dehydration rinsing'' or ``finishing'' operations can be performed. The operation is stopped at the end of each stroke, which is advantageous for fabrics that would wrinkle or shrink if the water was completely shaken off.

In the above embodiment, the dewatering motor 6 is energized for 3 seconds and then de-energized for 6 seconds during the "finishing" process, but the energization/de-energization time is not limited to this. However, if the dehydration basket 7 stops during a power outage,
Since the water containing the finishing agent repeatedly collides with the laundry, an ideal condition for the adhesion of the finishing agent cannot be obtained, so the dehydration basket 7 is turned off or turned off to prevent it from stopping or reaching a low rotational speed close to that. It is preferable to set a time.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with various changes without departing from the gist thereof.

As explained above, the present invention rotates the finishing process in which the dehydrating basket is rotated while supplying water containing a finishing agent to the laundry, and during this finishing process, the dehydrating basket is driven intermittently at predetermined intervals. Therefore, since the dehydration basket is rotated at a lower speed than during normal dehydration and rinsing, the finishing agent can be effectively applied to the laundry while it is still stored in the dehydration basket after dehydration and rinsing. Therefore, unlike conventional methods, it is no longer necessary to return the laundry to the washing tub and wash it to apply the finishing agent, which saves labor and water, as well as reducing the time required for finishing. It has the excellent effect of being able to shorten the time.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view of a two-tub washing machine, and FIG.
An enlarged vertical side view along the line, Figure 3 is an electrical circuit diagram,
Fig. 4 is a time chart, Fig. 5 is an enlarged view of the knob of the dehydration timer, Fig. 6 is a rotation mode diagram of the dehydration basket, and a to d in Fig. 7 are for explanation of the operation shown in different states. FIG. 3 is a longitudinal cross-sectional view of a dehydration basket. In the figure, 2 is a washing tank, 3 is a dehydration tank, 6 is a dehydration motor, 7 is a dehydration basket, 8 is a water sprinkler, 12 is a water injector,
15 is a timer for dehydration, 16 is a solenoid valve for water supply, 1
8 is a pot, 20 is a dewatering side waterway, 21 is a container, 2
3 is a dehydration selection switch, 27 is a water injection switch, 32 is a selection cam switch, 33 is an intermittent drive cam switch, and 34 is a knob.

Claims (1)

[Claims] 1 In a dehydrator that rinses laundry by centrifugal dehydration by pouring water into the laundry in the dehydration basket and rotating the dehydration basket, a finishing process in which the dehydration basket is rotated while water containing a finishing agent is supplied to the laundry. established,
Operation of a dehydrator characterized in that during this finishing process, the dehydrating basket is rotated at a lower speed than during normal dehydration and rinsing by driving the dehydrating basket intermittently at predetermined time intervals. Method.