JP3210106B2 - Continuous washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous washing machine, and more particularly to a continuous washing machine which prevents clogging at a transfer opening.

[0002]

2. Description of the Related Art In a continuous washing machine, an inner / outer double cylinder is provided in multiple stages, the inner drum is rotated forward to wash the laundry in the inner drum, the inner drum is rotated in reverse, and the inner drum is rotated from the upstream inner drum. The transfer is performed by the chute to the wake side inner body through the transfer opening. FIG. 9 is a vertical sectional view of a conventional inner trunk. The inner body 1 is made of a perforated plate and has a cylindrical drum shape, and its end plate 1a is provided with a transfer opening 2, which is formed in a hollow cylindrical journal portion 3.
The journal portion 3 is supported by a bearing provided in an outer shell described later. In the state shown in the figure, one end plate 1a 'is provided in the inner body 1.
An oblique shot 4 having an upper end on the side and a lower end ending at an opening when viewed from the inner body 1 in the journal portion 3 is fixed. The shot 4 is inclined such that the phase is delayed in the forward rotation direction as the radius increases. The shutter 4 is also inclined toward the transfer opening 2 such that the phase is delayed when viewed in the forward rotation direction. Therefore, during the forward rotation, the laundry is moved to the outer peripheral side by the shutter 4, but at the time of the reverse rotation, the laundry is moved to the center side, so that the laundry is transported to the downstream side through the transport opening 2.

FIG. 10 shows a flow of a standard cleaning schematically shown. The laundry put in from the laundry inlet 25 is immersed in water in the tub S1, washed in the tub S2, and washed in the tub S2.
The main washing is performed in the tanks 3 and 4, the tanks S5 and 6 are disinfected by injecting live steam, the rinsing is performed in the tanks S7 to S10, and the tank S1 is performed.
At 0, gluing is performed.

FIG. 11 is a longitudinal sectional view of a support portion of the inner body of the conventional example, and shows the inner body 1 of the S (N) th tank and the S (N + 1) th tank.
(N) and the inner trunk 1 (N + 1) are shown. The outer shells 6 each include the inner shell 1, and the adjacent outer shells 6 are separated by an outer shell partition plate 6a. The inner trunk 1 is attached to the outer trunk partition 6a.
A cylindrical bearing support member 7 concentric with the bearing member 7 is fixed, and a bearing 8 made of nylon (trade name) is fixed to the cylindrical bearing support member 7. The journal portion 3 provided on the inner body 1 has a hollow cylindrical portion 1b which forms a transfer opening 2 on the outlet 4a side of the shot 4 and is provided integrally with the inner body 1, and a cylindrical shape is provided on the outer periphery of the hollow cylindrical portion 1b. The journal member 3a for radial load is fitted and fixed, and the journal member 3a is fitted on the cylindrical sliding surface 8a of the bearing 8. Both end surfaces of the bearing 8 are thrust sliding surfaces 8 b, and the thrust receiver 3 b sliding on the sliding surface 8 b is fixed to the end plate 1 a of the inner body 1. A gap 9 is provided between the journal members 3a axially opposed to each other in the hollow cylindrical member 1b of the inner body 1 adjacent to each other, and a circumferential projection provided on the inner circumference of the bearing 8 is provided in the gap 9. Article 8c is looking. An air nozzle 11 penetrates the bearing 8 in the radial direction and opens toward the gap 9, and the air nozzle 11 communicates with a pressure detection circuit (not shown). Compressed air of about 1 kg / cm ² is sent to the air nozzle 11 and is constantly discharged to the atmosphere. The laundry transferred from the inner body 1 (N) to the inner body 1 (N + 1) adjacent on the downstream side passes over the air nozzle 11, so that the air nozzle 11 is blocked, and the pressure in the air nozzle 11 increases. To operate the pressure switch of the pressure detection circuit. In the case of normal transfer, the laundry quickly stops moving through the air nozzle 11 and the pressure rises instantaneously, and the pressure switch returns immediately, but the laundry remains in the transfer opening 2. Then, the pressure of the air nozzle 11 is kept rising, and since the pressure switch does not return, it can be detected that the laundry is clogged in the transfer opening 2.

[0005]

As described above, since the outlet of the shout ends at the inlet of the transfer opening 2 of the inner shell 1 (N) on the upstream side, the laundry passes through the cylindrical transfer opening. Will do. The force that the shot transfers the laundry is caused by a delay in the phase of the shot exit side with respect to the rotation direction when the laundry is reversed from the inclination of the shot, and therefore the laundry in the cylindrical transfer opening. Is especially gap 9
The peripheral wall of the transfer opening provides resistance to transfer.
In addition to clogging of the laundry due to such a structural cause, the laundry is clogged in the transfer opening 2 due to the type of the laundry, improper handling, and failure of the control member as described in the following (1) to (6). Sometimes. (1) In order to supply the laundry to the continuous washing machine, the laundry is input according to the type of the laundry using a loading conveyor, a bag, or the like, and the laundry is incorrectly loaded (double loading). (2) When the water is transferred due to insufficient water level transition. (3) When the linen of the laundry has poor water absorption and the linen protrudes from the inner body even at the end of the washing rotation (Parkel, etc.). (4) When the laundry is transferred while the air is inflated like a balloon while the laundry is being rotated, such as a hood (wrapping cloth) (the volume is increased, the transfer is caught by the shot). (5) When the ratio of synthetic fibers is high in the linen material. (6) Malfunction of the control parts, CPU, etc. (the software is such that it does not become clogged by a normal malfunction).

[0008] Actually, clogging occurs at a low frequency due to any of the above-mentioned causes or multiple causes.

[0007] Normal linen is charged in a batch of 50 kg, but parken, wrapping, and linen with a large percentage of synthetic fiber are often reduced in amount to 45 kg to 40 kg.

In this manner, even when the control is normal and the control is normal, the linen may not be completely transferred due to certain conditions, and the linen may remain in the tank where the transfer has been completed.

The causes of the clogging of the laundry in the transfer opening can be roughly classified into the following (1) to (4) in the case of the structure of the transfer means.
It can be roughly classified into the case caused by the handling of (5) and the case caused by a failure of the control system device.

[0010] Once the laundry starts to clog in the transfer opening and cannot be detected by the clogging detecting means, the laundry to be transferred one after another is pushed into the transfer opening, and the function stops completely. When the laundry is clogged in the transfer opening, the inside of the continuous washing machine is too hot for humans to enter, so it is necessary to wait until the temperature reaches a temperature at which humans can enter. Then, even when a person goes inside and works after the temperature is lowered, the laundry is taken out in a high-temperature, high-humidity environment under an environment where a detergent is present. Depending on the state of clogging of the machine, such work may take, for example, four people for about 10 hours.

The above-mentioned conventional means for detecting a laundry jam is a means for detecting the laundry only when the laundry is jammed. Therefore, an object of the present invention is to provide a continuous washing machine that detects a state before laundry is clogged and prevents the laundry from being clogged.

[0012]

Means for Solving the Problems The first invention of the present invention comprises :
Drives a washing tub that has an inner body with multiple outer cylinders in multiple stages
In a continuous washing machine having a driving device,
As a plurality of drive units with motors,
The motion devices are respectively distributed continuously to the multi-stage washing tub,
Means for detecting the load current of the motor of the drive source of each drive device
Washing the washing tub in which the load current is large.
Prohibit transfer from the washing tub on the upstream side in the transfer direction of goods
A continuous washing machine characterized by comprising a control device .

[0013] The second invention of the present invention relates to a method for controlling the load current of
Detection is performed when the washing tub rotates forward immediately after being transferred.
The continuous washing machine according to the first aspect of the present invention .

According to a third aspect of the present invention, the load current of the washing tub is reduced.
Detection is the average value and mode value of the load current during one rotation of the washing tub.
The first invention or the second invention, wherein a representative value of
A continuous washing machine according to the invention.

According to a fourth aspect of the present invention, while the washing tub rotates.
Sample the load current of this motor at regular intervals,
Washing in the washing tub with the average current sampled during one revolution
Judge the quantity of items and determine the average current value for each type of laundry.
To prevent transfer when the load current exceeds the appropriate load current.
A third aspect of the present invention is characterized in that the control device for stopping is provided.
This is a continuous washing machine.

The fifth invention of the present invention is directed to a
The average current value is obtained from past data multiple times in order from new data.
While loading, each washing tub is stored in a storage device as a table
The data in the N tank is stored immediately after the sampling of the N tank is completed.
Adjacent on the upstream side in the direction of movement of the laundry from the tub to the N tub
The data of the (N-1) th tank is subtracted, and the subtracted current value
Is larger than the comparison value on the (+) side, the laundry on the Nth tank
If there is a transfer error remaining and the value is larger than the comparison value on the (-) side,
If there is a transfer abnormality where the laundry remains in the N-1th tank,
That the transfer is abnormal according to the result of the determination means
Equipped with a control device for detecting a transfer abnormality tank that displays
The continuous washing machine according to any one of the inventions to the fourth invention .

[0017]

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

FIG. 3 is a longitudinal sectional view of a continuous washing machine to which the present invention is applied. The inner shell 1 made of a perforated plate and the drum-shaped outer shell 6 are concentric with each other and constitute tanks S1 to S10. A hollow cylindrical journal portion 3 at the center of the inner body 1 is rotatably fitted to a bearing 8 provided on the outer body 6. The center side of the journal 3 is the transfer opening 2. Outer body 6
Is provided with an outer trunk partition plate 6a in the axial direction to partition between both end plates 15. Part of the outer trunk partition plate 6a communicates as shown in the flow of the cleaning step in FIG.

A ring gear 19 is fixed to the outer periphery of the inner body 1, and a pinion 21 meshing with the ring gear forms a motor 22 such as an induction motor or a synchronous motor suitable for driving an inverter.
Is fixed to the motor shaft. The electric motor 22 is fixed to the outer shell 6. Each motor 22 is driven by an inverter 23. Each inverter 23 is controlled by a control device 24. The outer shell 6 is provided with a laundry input port 25 communicating with the transfer opening 2 of the inner shell 1 of the tub S1. The present embodiment is similarly applied to a continuous washing machine in which the electric motor 22 rotates at a constant rotation speed.

As shown in FIGS. 4 to 7, the inner body 1 rotates counterclockwise in the order shown. The inner body 1 is provided with a shot 29 which is inclined so that the phase is delayed as viewed in the normal rotation direction as the radius increases. The shunt 29 is also inclined so as to be out of phase with respect to the transfer opening 2 in the axial direction when viewed in the reverse rotation direction. Accordingly, during the forward rotation, the laundry W is moved toward the outer periphery by the shutter 29, but is moved toward the center during the reverse rotation, so that the laundry is transferred to the downstream side through the transfer opening 2.

FIG. 1 and FIG. 2 show that the laundry is hardly clogged.
An example of the transfer opening is shown. FIG. 2 is a longitudinal sectional view of the inner trunk 1. 9 differs from the conventional example of FIG. 9 in that the end 29a on the outlet side of the shot 29 projects the transfer opening 2 from the inside of the inner barrel 1 to the outside. The protruding end 29a is perpendicular to the axis of the inner body 1. This shot 2
Details of the vicinity of the end portion 29a of FIG. 9 (the portion circled in FIG. 2) are shown in FIG. In FIG. 1, the end 2 of the shot 29
9a is located in the transfer opening 2 of the inner body 1 (N + 1) adjacent to the downstream side with respect to the transfer direction of the laundry as viewed from the inner body 1 (N). This end portion 29a is connected to the latter inner trunk 1 (N +
1) It has not entered. A bearing 8 is provided integrally with a partition plate 6a of the outer shell 6, and each inner shell 1 (N,
N + 1) Hollow cylindrical member 1b forming transfer opening 2
The journal portion 3 that fits in is fitted. One side surface of each of the end flange portions 3c of the journal portion 3 slides on both end surfaces of the bearing 8 (the bearing radial gap is exaggerated in the drawing).

In the above, when the laundry is transferred, the control device 24 stops the electric motor 22 for driving the inner drum 1 (N + 1) on the downstream side and stops the motor 22 to stop the movement.
When the inner drum 1 (N) adjacent to the upstream side of (N + 1) is rotated in reverse to the normal rotation for washing, the laundry in the inner drum 1 (N) scooped up by the shot 29 is rotated. In the state where the outlet side of the shot 29 is lowered to the lowermost end and before and after that, it slides mainly on the shot 29 by gravity and directly falls into the stationary inner body 1 (N + 1). Therefore, as in the conventional example shown in FIG. 11, the laundry moves along the generatrix with the hollow cylindrical member 1b forming the transfer opening 2, the unevenness such as the gap 9, and the gap therebetween. The clogging of the laundry in the transfer opening 2 due to washing is eliminated. That is, clogging of the laundry coming from the structure of the transfer opening 2 is eliminated.

Even if the outlet side is disposed in the transfer opening of the inner body on the downstream side as in the case 29 described above,
Incidentally, the clogging of the laundry is caused by the handling or the failure of the device as described above. In this case, providing the air nozzle as the detecting means for detecting the laundry in the transfer opening in the same manner as in FIG. 11 is meaningless because the air nozzle does not function.

Therefore, since it is not known that the transfer of the laundry has been completed, the inner trunk immediately upstream with respect to the movement of the laundry with respect to the movement of the laundry with the laundry remaining in the inner trunk 1 (N + 1). 1 (N), the laundry is sent to the inner body 1 on the downstream side.
The amount of laundry increases to (N + 1), and if this state continues, the laundry is clogged in the inner trunk 1 (N + 1). And inner trunk 1
The overload protection device of the electric motor 22 for driving (N + 1) operates or an inverter trip occurs, and the control device 24 stops the entire device. Therefore, in this embodiment, the condition in which the laundry is clogged is detected to prevent the laundry from being clogged.

FIG. 8 is a longitudinal sectional view of the embodiment. 8 is the same as that of FIG. 3 but has the same mechanism but a different control relationship. Therefore, the description will be omitted and only different parts will be described. A current detector 26 is provided on each power supply line of each electric motor 22, and the load current of the electric motor 22 detected by the electric current detector 26 is sent to the control device 24. The control device 24 amplifies the signal detected by the current detector 26, converts the signal into a digital signal by an A / D converter, stores the current value, and
The average value of the current value during rotation is obtained, and the average value of each current detector 26 is input to the storage device. This average value is stored for each tank, for example, for the past 10 times. Table 1 shows the stored data in the form of a table.

The numbers 1 to 10 in the leftmost column indicate the number of rotations of the inner body 1. When the inner body 1 makes the eleventh rotation, the above number is minus (1). Erased, 2
10 is 1 to 9 respectively, and the eleventh rotation is 10 so that the control device 24 calculates the average value when the inner trunk 1 makes one rotation, and adds it to Table 1 above.

The load current 1 of the second rotation of the tank S1 is
When 2.1A is significantly larger than the average of the load current between 1 and 10 rotations in the tub S1, the supply of the laundry from the slot 25 is suspended. The tank S2 (second tank) is the Nth tank, and the data of the third rotation is 13.2A. In addition, tank S1
With the (first tank) as the (N-1) th tank, the data of the third rotation is 7.2A. Here, (Nth tank data)-(N-1
Tank data) = (second tank data) − (first tank data) = 13.2−7.2 = 6A. Since this 6A exceeds a predetermined value, for example, 4A, the transfer from the tank S1 to the tank S2 is prohibited. The data of the fifth rotation of the tank S4 and the tank S3 are 11.0A and 9.6A, and the difference is 11.0A.
−9.6 = 1.4A <4A, and it is necessary to observe, but the transfer from tank S3 to tank S4 is not stopped. If the transfer from tank S3 to S4 and the transfer amount from tank S4 to S5, If the difference is due to the difference, the difference between the data in the tank S3 and the data in the tank S4 increases in the later current detection and eventually exceeds 4A. Therefore, it is necessary to stop the transfer immediately without stopping the transfer immediately. For the first time, the transfer from the tank S3 to the tank S4 is stopped. Tank S
Since the eighth data of the ninth and the ninth data of the tank S10 exceed the same data of the tanks S8 and S9 immediately upstream by 4A or more, the transfer from the tank S8 to the tank S9 is stopped.
Then, the transfer from the tank S9 to the tank S10 is stopped. These can be shown on a display or recorded to show the status.

As described above, since the difference between the load current of the tub S (N) and the load current of the tub S (N-1) can all be obtained, the tub S ( N-
When the load current of the tub S (N) is smaller than the load current of 1), it is determined that the laundry remains in the tub S (N-1), and the transfer state is known even when the load is not overloaded. Can be.

The load current in the tub where the transfer abnormality has occurred is not a comparison value with the load current in the tub before and after the transfer direction of the laundry.
For example, in the case of Table 1, a representative value such as an average value or a mode value of ten times of data of the tank in which the transfer abnormality has occurred may be used as the comparison value.

[0030]

( 1 ) The present invention provides a continuous washing machine in which each washing tub is provided with a driving device having an electric motor as a driving source, and a means for detecting the load of each washing tub is provided. Since a control device for stopping the transfer from the upstream tub adjacent to the transfer direction of the laundry is provided, it is possible to prevent the laundry from being clogged. ( 2 ) By detecting the load on the washing tub when rotating the washing tub immediately after the transfer, the load on the washing tub in the state immediately after the transfer of the laundry is determined, and the transfer state can be known. . ( 3 ) Since the load of the washing tub is detected using the representative value of the load current during one rotation of the washing tub, an accurate load can be quickly detected. ( 4 ) The load current of the motor of the driving device is sampled at regular intervals, and the amount of the laundry in the washing tub is determined based on the average current sampled during one rotation, and the average current value is determined according to the type of the laundry. Since the transfer is prohibited when the load current is exceeded, clogging of the laundry can be prevented in advance. ( 5 ) The average current sampled is stored as a table in the storage device for each washing tub while taking a plurality of past times from the new data in order from the new data. Also subtracts the data of the (N-1) th tank adjacent to the upstream side in the transport direction of the laundry, and if the subtracted current value is larger than the comparison value on the (+) side, the laundry is loaded in the Nth tank. (-)
The control device for detecting a transfer abnormality occurrence tub, which has a determination means for determining that the transfer is abnormal according to the result of the determination means, when the transfer value is larger than the comparison value, the laundry is left in the N-1th tank. Is provided, the state of all the washing tubs is automatically grasped, and it is possible to always know the transfer state including which of the washing tubs has caused an abnormality in the transfer of the laundry.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a transfer opening .

FIG. 2 is a longitudinal sectional view of the inner trunk showing an arrangement position of FIG. 1;

FIG. 3 is a longitudinal sectional view of the continuous washing machine.

FIG. 4 is a cross-sectional view perpendicular to the axis of the inner and outer barrels showing a cleaning action.

FIG. 5 is a sectional view taken at right angles to the axis of the inner and outer barrels showing a cleaning action.

FIG. 6 is a cross-sectional view perpendicular to the axis of the inner and outer barrels showing a cleaning action.

FIG. 7 is a cross-sectional view perpendicular to the axis of the inner and outer trunks showing a cleaning action.

FIG. 8 is a longitudinal sectional view of the continuous washing machine.

FIG. 9 is a vertical sectional view of a conventional inner trunk.

FIG. 10 is a schematic view showing the operation of the continuous washing machine.

FIG. 11 is a longitudinal sectional view showing the vicinity of a transfer opening in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner trunk 2 Transfer opening 3 Journal part 4 Chute 6 Outer trunk 8 Bearing 9 Clearance 24 Control device 26 Current detector 29 Chute

Claims (5)

(57) [Claims] 1. A continuous washing machine having an inner / outer double drum in multiple stages and a drive device for driving a washing tub serving as an inner drum, comprising a plurality of drive devices each having a motor as a drive source. The plurality of driving devices are respectively distributed continuously to the multi-stage washing tub, and the load power of the electric motor as the driving source of each driving device is distributed.
Continuous washing comprising a means for detecting flow, and a control device for inhibiting transfer from the washing tub on the upstream side in the transfer direction of the laundry to the washing tub in which the load current is large. Machine. 2. The continuous washing machine according to claim 1 , wherein the detection of the load current of the washing tub is performed when the washing tub is rotated forward immediately after being transferred. Wherein the average value of the load current during one rotation of the detection of the load current of the washing tub washing tub, continuous washing of claim 1 or 2, characterized by using a representative value of the mode such as Machine. 4. A load current of the motor during rotation of the washing tub is sampled at regular intervals, and an average current sampled during one rotation is used to determine the amount of laundry in the washing tub. The continuous washing machine according to claim 3 , further comprising a clogging prevention control device that prohibits transfer when the load current exceeds an appropriate load current determined for each product type. 5. The sampled average current value is stored in a storage device as a table in a storage device while taking a plurality of past times from the new data in order from the new data. The data of the (N−1) th tank adjacent to the upstream side in the laundry transfer direction from the N tub is subtracted, and if the subtracted current value is larger than the comparison value on the (+) side, the Nth tank is subtracted. If there is a transfer abnormality in which the laundry remains, and if the value is larger than the comparison value on the (-) side, there is provided a determination means that determines that the laundry remains in the N-1th tank, and the transfer is abnormal according to the result of the determination means. The continuous washing machine according to any one of claims 1 to 4 , further comprising a control device for detecting a transfer abnormality occurrence tank that displays the following.