JP3699780B2 - Laundry transfer method for continuous water washer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes a washing cylinder partitioned into a large number of washing tubs in the axial direction by a partition wall having an opening in the center, and pre-washes the laundry while sequentially transferring the laundry from the upstream washing tub to the downstream washing tub. The present invention relates to a continuous water washing machine that continuously performs main washing and rinsing, and is characterized by a method of transferring laundry from a certain washing tub to an adjacent downstream washing tub, particularly speed control of the washing cylinder during the transfer. There is a way about that.
[0002]
[Prior art]
The continuous water washing machine is provided with an elongated washing drum, and a laundry input port is provided at one end (upstream end) of the washing drum, and a delivery port is provided at the other end (downstream end). The interior of the washing cylinder is partitioned into about 10 wash tubs in the axial direction by partition walls, and the laundry is transferred from the upstream wash tub to the adjacent downstream wash tub at the center of each partition wall. Are provided. The washing tubs are grouped into a pre-washing tank, a main washing tub, and a rinsing tub from the upstream side, and the laundry is sequentially washed from the upstream washing tub to the downstream washing tub and washed in each tub for a predetermined time. In the state where the rinsing is completed, the washing is sent out from the most downstream washing tub.
[0003]
In the opening for transferring the laundry, a scoop shaped like a conch shell extends toward the upstream washing tub, and when the washing drum rotates once, this scoop is in the respective washing tub. The laundry is picked up and transferred to the laundry tub adjacent to the downstream side. When washing is performed in each washing tub, the washing drum is swung back and forth to stir the laundry with the scoop scooping portion positioned upward.
[0004]
Referring to FIGS. 5A, 5B, and 5C, the operation of the scoop 2 transferring the laundry A will be described. After the laundry A is transferred from the upstream washing tub 7a, the washing cylinder 1 is scooped. 2 with the scooping-up portion 3 in the upward direction, as shown by a reciprocating arrow S in FIG. 2A, washing is performed in the washing liquid 8 staying in the lower part of each washing tub 7. Wash object A by shaking.
[0005]
When the washing time in each tub 7 set by a timer or the like elapses, the washing drum 1 rotates 180 degrees from the normal washing position as shown in FIG. Has been rotated downward, and the scooping portion 3 causes the laundry A in the tub 7 to be scooped up to the inside of the scoop 2.
[0006]
Further, as shown in FIG. 3 (c), when the washing drum 1 rotates until the scooping portion 3 of the scoop 2 reaches the upper position, the laundry A scooped up by the scoop 2 becomes the central portion of the scoop 2. The laundry funnel 4 is fed to the opening 6 of the partition wall, and the laundry A is transferred to the adjacent downstream washing tub 7b through the opening 6 of the partition wall.
[0007]
Returning to (a) of FIG. 5, washing of the laundry A newly fed into the respective washing tubs 7 from the upstream tub is performed by reciprocating swinging of the washing drum 1. By repeating the above operation, the laundry A is washed while being sequentially sent from the upstream washing tub in the washing drum 1 to the downstream washing tub.
[0008]
[Problems to be solved by the invention]
In the conventional continuous water washing machine, the angular velocity when the washing drum 1 makes one rotation for transporting the laundry A is the same as the angular velocity when the washing drum 1 swings back and forth for washing. The laundry A was transported by rotating the swinging washing drum 1 at the angular speed as it was.
[0009]
However, in the conventional continuous washing machine that performs such a transfer operation, when the laundry A in the washing tub 7 becomes bulky, that is, when the amount of the laundry A put into the washing tub 7 is increased. There has been a phenomenon in which the laundry A is not transferred well or a part of the laundry A remains without being transferred. Therefore, in order to perform reliable transfer, the amount of the laundry A put into each tub 7 cannot be increased so much, so that the laundry A that can be washed at one time is compared with the capacity of the laundry tub 7. There was a problem that the amount was limited to a relatively small amount.
[0010]
The present invention has been made to solve this problem, and it is an object of the present invention to obtain technical means capable of reliably transferring the laundry even when the laundry A in the washing tub 7 is large.
[0011]
[Means for Solving the Problems]
In the laundry transfer method of the present invention, the inside of the laundry cylinder 1 is partitioned into a plurality of wash tubs 7 in the axial direction by a partition wall 5 provided with an opening 6 for transferring the laundry A to an adjacent wash tub in the center. The laundry A is thrown into the tub 7, and when the washing drum 1 rotates once by the scoop 2 extending from the opening 6 of each partition wall toward the upstream washing tub, It is employed in a continuous water washing machine having a structure for transferring to a washing tub adjacent to the tub.
[0012]
In the method of the present invention, when the laundry cylinder 1 is rotated once for the transfer of the laundry A, the scooping-up portion 3 of the scoop 2 rotates below the washing tub 7 and picks up the laundry A. The rotational speed of the body 1 is switched to the low speed side, and when the scooping portion 3 of the scoop 2 is rotated upward thereafter, the rotational speed of the scoop 2 is returned to the rotational speed before switching or switched to the high speed side for acceleration. Thus, the laundry A is vigorously transferred to the adjacent tub .
[0013]
The method of claim 2 detects the timing at which the scooping portion 3 of the scoop 2 scoops up the laundry A by detecting the value of the current flowing through the drive motor of the washing drum 1 when the laundry is transferred by the above method. When the drive current value of the drive motor increases, the rotational speed of the motor is switched to the low speed side.
[0014]
[Action]
According to the test conducted by the inventors of the present invention, when the scoop 2 scoops up the laundry A, the angular velocity of the washing cylinder 1 is slowed down and the scoop scooping portion 3 is slowly inserted below the laundry A. As a result, the laundry A is scooped up more smoothly into the scoop 2, and the angular speed of the washing drum 1 is returned to the high speed side at the timing when the scooping portion 3 of the scoop 2 rises thereafter. By accelerating, the laundry A that has been scooped up is vigorously fed into the spiral cone 4 at the center of the scoop, and the laundry A is vigorously adjacent due to the thrust applied from the spiral cone 4 as it is fed. It was found to be transferred to the tank.
[0015]
Therefore, by adopting the above method, even when a larger amount of laundry A is put into the washing tub 7 than before, the laundry A is reliably transferred when the washing cylinder 1 is rotated once, and thus the laundry is washed. A lot of laundry A can be put into the tub 7, and as a result, the processing capacity of the continuous water washer could be improved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The scooping-up portion 3 of the scoop 2 is positioned at the upper end of the washing tub 7, washing is performed by reciprocatingly swinging the washing drum 1, and the washing drum 1 is rotated in a direction in which the laundry A is scooped up by the scoop 2. Therefore, the basic operation of transferring the laundry A to the laundry tub adjacent to the downstream side is not different from the conventional method in this invention. The difference from the conventional method is that the rotation speed of the washing drum 1 is switched to the low speed side for a while while the washing drum 1 is rotated once for the transfer of the laundry A. At the timing when the section 3 scoops up the laundry A or at the timing just before that, the rotation of the washing drum 1 is switched to the low speed side, and after the laundry A is scooped up by the scoop 2, the scoop scooping section 3 is moved to the washing tub 7 The rotation of the washing drum 1 is restored or switched to the high speed side until it reaches the upper end.
[0017]
As a result, the laundry A is scooped up into the scoop 2 at a slow speed and is fed into the spiral cone 4 of the scoop while being accelerated, and the adjacent washing tub passes through the opening 6 of the partition wall by the thrust generated by the feeding. It is transferred to. The angular velocity of the laundry cylinder 1 on the low speed side when the laundry A is scooped up is approximately one half of the angular velocity when the laundry cylinder 1 reciprocally swings during washing. The angular velocity itself of the washing cylinder when the laundry A is sent vigorously into the adjacent washing tub is not so important, and what is important is the acceleration of the washing cylinder 1 when returning from the low speed side.
[0018]
The scoop 2 is fixed to the washing drum 1, and therefore the phase (rotation position) of the washing drum 1 when the scoop scooping portion 3 scoops up the laundry A is constant. Accordingly, the simplest means for detecting the timing for switching the rotation of the washing drum 1 to the low speed side is to provide a limit switch for detecting the phase of the washing drum 1 when the scoop 2 scoops up the laundry A. Based on this detection signal, the rotational speed of the drive motor of the washing drum 1 may be switched from steady rotation to low speed rotation. In order to change the rotation speed of the motor, it is easy to use an inverter and it is also common sense.
[0019]
After the laundry A is picked up, the timing for returning the rotation of the washing drum 1 to the high speed side is not limited to a means for providing a limit switch for detecting the phase of the washing drum 1 as well as a limit for detecting the phase at the time of picking up. It is also possible to employ a means for providing a timer for setting a predetermined elapsed time after the switch operates and switching when the timer times out. According to the latter method, one limit switch can be saved.
[0020]
Instead of these limit switches, a rotary encoder and a counter that counts its output pulses are used to detect the phase of the washing drum 1 and switch from the steady speed to the low speed side and from the low speed side to the steady speed. Of course it is also possible to do.
[0021]
1 to 4 show an example of control based on the current value of the drive motor that rotationally drives the washing drum 1. During normal washing by the reciprocating swing of the washing drum 1 shown in FIG. 3, the change in the current value of the drive motor of the washing drum 1 by one swing is as shown in FIG. Here, the horizontal axis is time, the vertical axis of (a) is the current value, and the vertical axis of (b) is the angular velocity of the washing drum 1.
[0022]
When the washing drum 1 is rotated once in the forward rotation direction from this swinging washing state, the scoop scooping portion 3 is inserted under the laundry A during the rotation, and the laundry A is scooped into the scoop 2. (FIGS. 1A and 1B). The change in the current value of the washing drum driving motor during one rotation of the washing drum 1 when the laundry A is transferred is as shown in FIG. That is, the left half of FIG. 2 has the same current waveform as that during normal swing washing, and this is the same as the swing operation during normal washing in the first half when the washing cylinder is rotated once for transfer. Therefore, it is natural. As in the normal swinging operation, after the current value has once decreased, when the scoop 2 is inserted under the laundry A, the current value increases rapidly and then decreases again. Therefore, the timing at which the current value suddenly increases after the washing drum 1 starts one rotation is detected by an ammeter, and the angular velocity of the washing drum 1 is set to the low speed side as shown in FIG. Control of switching can be performed. Then, at the stage where the current value has greatly decreased again, the angular velocity of the washing drum 1 is returned to the original velocity.
[0023]
2, the horizontal axis represents time (or the phase of the washing drum 1), the vertical axis in (a) represents the current value, and the vertical axis in (b) represents the angular velocity of the washing drum 1.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a state in which a scoop is inserted under a laundry and scoops up the laundry. FIG. 2 is a current value of a washing drum driving motor when the laundry drum makes one rotation for transferring the laundry. FIG. 3 is a schematic diagram showing the operation of the washing drum in a washing state. FIG. 4 shows the current value of the washing drum driving motor and the angular velocity of the washing drum during swing washing. Diagram [Fig.5] Explanatory drawing showing the transfer operation of laundry by scoop [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Washing drum 2 Scoop 3 Scooping part 5 Partition 6 Opening 7 Laundry tub A Laundry

Claims (2)

In the washing cylinder (1), which is partitioned into a plurality of washing tubs (7) in the axial direction by a partition wall (5) provided with an opening (6) for transferring the laundry (A) to the adjacent washing tub in the center. When the laundry (1) is rotated once by the scoop (2) that is loaded into the laundry (A) and extends from the opening (6) of each partition toward the upstream washing tub, each tub (7) In the method for transferring laundry in a continuous water washing machine having a structure for lifting the laundry (A) and transferring it to a laundry tub adjacent to the downstream side,
When the laundry cylinder (1) is rotated once for the transfer of the laundry (A), the scooping portion (3) of the scoop (2) rotates downwardly in the washing tub (7) and the laundry (A) The rotational speed of the washing drum (1) when scooping up is switched to the low speed side, and then the washing drum (1) is accelerated when the scooping portion (3) of the scoop (2) rotates upward. laundry, characterized in that transferring the (a) to the vigorously adjacent bath, laundry transfer method in a continuous washing machine Te. When the scooping-up part (3) of the scoop (2) scoops up the laundry (A) by detecting the value of the current flowing through the driving motor of the washing drum (1), and the driving current value of the driving motor increases 2. The method for transferring laundry to a continuous water-washing machine according to claim 1, wherein the rotational speed of the motor is switched to a low speed side.

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