JPH012691A - drum type washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a drum-type washing machine in which a horizontal shaft-type rotating drum is rotated by a motor.

(b) Conventional technology An example of this type of drum-type washing machine is the Utility Model No. 60-1712.
It is disclosed in Publication No. 79. Then, the rotating drum is shaken from side to side to wash delicate clothes without hitting them.
When performing washing by washing, set the counterclockwise rotation time and clockwise rotation time of the rotary drum.

However, if the amount of clothing in the rotating drum changes, that is, the amount of load, the left and right rotation angle of the rotating drum will also change in the conventional example, and if the load is small, the rotation angle will become large. In some cases, cleaning was not performed.

(c) Problems to be Solved by the Invention The present invention aims to obtain a desired cleaning power regardless of changes in load, especially during swing washing.

(d) Means for solving the problem The solution according to the present invention includes a plurality of switch members or one switch member arranged at each predetermined rotation angle on the rotating drum side and the fixed side, and one switch member. Alternatively, a plurality of actuating members arranged at predetermined rotation angles are provided, and a detecting unit detects switching of the slide member during rotation of the rotating drum, and a detection unit detecting the number of times of detection and the switching member The configuration includes a comparison section that compares the number of times smaller than the number of motors, and a motor control section that reverses the motor in accordance with the output of the comparison section.

(E) Effect, that is, when swing washing is set, the rotating drum is swung (rotated) left and right to the angle at which the switch member switches, regardless of the load amount.

Therefore, the same degree of cleaning can be achieved even under all load amounts.

(f) To explain based on the drawings of the embodiment, in Fig. 5, (1) is a sideways bottomed cylindrical outer tank (2) with a spring (3)...
This is the frame of a dry cleaning machine that is elastically supported by dampers and dampers. (5) is the outer tank (2
A rotating drum is coaxially and rotatably installed inside the drum and serves as washing, dehydration (liquid), and drying processing chambers.

6) is a large booby fixed to the rotating shaft of the rotating drum (5), which is suspended by a belt (9) to a small pulley (8) fixed to the rotating shaft of the dewatering motor (7). (10)
is a washing motor, which is connected to the rotating part of the dewatering motor (7) through large and small pulleys (11), (12) and a belt (13). Here, although the dewatering motor (7) and the washing motor (10) are induction motors, their respective frequencies are controlled and their rotational speeds can be continuously changed from low speed to high speed.

(14)... is a switch member arranged on the outside of the rear surface of the outer tank (2) at each predetermined rotation angle.
(15) is a switch fixed to the outer periphery of the large pulley (6) or the arm so that it can correspond to each switching (14). The operating member switches the switch members one by one in response to the rotation of the large pulley (6) corresponding to each switch member (14). Switching to decline (14)...and operating member (15) to turn off
Possible examples include a sensor and a barrier plate, a reed switch and a magnet, an oscillation coil and a magnetic material, etc.

Regarding such switch members and actuating members, as shown in FIG.
The actuating members can be changed to <15) at intervals of 60 degrees, respectively. In the case of a switching system that combines a photosensor and a baffle plate, the arm itself can be used as the actuating member (15). If so, attach a magnet or magnetic material to the arm.

Note that the switch member (14) is on the rotating side, and the operating member (15) is on the rotation side.
) may be used as the fixed side.

The entire operation of such a dry cleaning machine is controlled by a microcomputer (hereinafter referred to as microcomputer 16), and a control block diagram of the microcomputer 16 is shown in Figure 1. As disclosed, the microcomputer (16) includes the switch member (14)... (or one switch member (14)), a washing method setting key (17), and a drum rotation speed setting key (18) during washing. )
, start key (19), and stop key (20). By using the setting key (17), it is possible to set, for example, the so-called swing washing in which delicate clothes are washed without hitting them by shaking the rotary drano (5) from side to side. Further, the rotation speed of the washing motor (10) can be switched between high and low two stages by frequency control according to the load amount and m class using the setting key (18).

Then, the microcomputer (16) calls the operation program stored in the ROM in advance, changes it as necessary according to each input signal, and starts the washing motor (16) based on this operation program.
10) and the dehydration motor (7), each inverter (21)
(22), and also to a display (23), a buzzer (24), and other output systems (25) of the dry cleaning machine.

The flowchart in Fig. 2 shows how the rotating drum (5) is flipped left and right to perform the washing operation during the washing process, and here, the frequency setting is performed based on the setting signal of the humid setting key (18). The washing motor (10) is rotated in one direction. The microcomputer (16) clears the counter, checks the number of switching times of the switch member (14) using the number detection section, increments the counter by 1 each time the switch member (14) switches, and when the counter content is 2 (switch member (14) or operating member ( 15) is 144 degrees if there are 5 pieces, 120 degrees if there are 6 pieces), it is judged that the drum rotation is good, and the preset 08 hours of the drum is checked as well as the washing process time. After 08 hours, the motor (10
). The passage of the predetermined OFF time is monitored as the washing process time elapses, and when the OFF time has elapsed,
The washing motor (10) is reversed. After that, the counter is cleared, and the number of times the switch member (14) is switched is adjusted in the number detection section. When the number of switching times is counted and it reaches 2, it is considered that the drum rotation is good, and 08 hours are passed. Stopped after the lapse,
After the OFF time has elapsed, the washing motor (10) is reversed again. Thereafter, such operations are performed until the washing process time has elapsed.

On the other hand, at the stage of clearing the counter and checking the number of times the switch member (14) has been switched, if 5 seconds have elapsed by the time the number of times has been counted twice, the motor (10) is stopped;
Check whether the drum rotation speed is set low. If it is low,
Depending on the ratio between the inverter output voltage V and the frequency f, the output voltage V is set high, or the frequency r is set high and the motor (lO
). During this restart, the switch member (14
) is detected, and if the counter reaches 2, the normal reversing operation is performed. However, if the color does not reach 2 even after restarting, or if the counter does not reach 2 even though the drum rotation speed has been set high from the beginning, the microcomputer (16) detects an abnormality in the motor (10). , or the belts (9) and (13) are determined to be loose, and the display (23) indicates that the tram is rotating poorly, and at the same time, the pulley (24) is operated.

A washing process in which swing washing is designated by the setting key (17) is shown by the brooch yard in FIG. The work that is refused is characterized in that the drum reversal ON time is not set, and the switch member (14) of the motor (10) is
It will be stopped after switching twice. That is, the rotating drum (5) is moved by the switch member (14) or the operating member (15).
) (144.'f if there are 5 pieces, 120 degrees if there are 6 pieces) and the amount of inertial rotation, then stop, and then rotate left and right repeatedly. For this a rotating drum (5)
Rather than being swept up and falling, the clothes inside rise and fall repeatedly, allowing them to be washed with less damage. Note that the rotation angle of the drum (5) to the left and right can be changed by changing the comparison value (currently 2) of the counter.

Next, the flowchart in FIG. 4 shows the rotation speed control of the dehydration motor (7) in the dehydration process.

Here, the microcomputer (16) initially outputs a signal corresponding to 25 Hz to the inverter (22), and starts the dehydration motor (7) at low speed rotation in one direction. And a microcomputer (16
) checks the switching interval of the switch member (14) using the rotation speed detection unit, and determines the switching interval according to the specified 25) 1z compatible 5O
It is compared with reference values of r, p, and m to determine whether the reference values have been reached. Once reached, the frequency is changed to 75Hz and compared with the corresponding reference values of 15Or, p, and m.
After that, each time the standard value is reached, the frequency is changed to 100Hz (200r, p, m
), 1257 (250r, p, m), 150Hz (
300r, p, m), 200Hz (400r, p
, m) and the output 1- to change the frequency. Also,
Output of inverter <22)! The pressure is high in the 25 Hz step and then low. In this way, the dewatering motor (7) accelerates, but the degree of acceleration changes depending on the amount of clothes (load amount) in the rotating drum 5>. Then, the microcomputer (16) converts the 200Hz compatible signal to the inverter (22).
), it is determined whether a predetermined time that has been set in advance manually or automatically has elapsed, and the long dewatering operation is executed at the highest speed for a predetermined time even under the full load.

In this way, in the dehydration (liquid) process, the total process time is automatically changed according to the load amount without wasting any waste.

(g) Effects of the Invention According to the present invention, a drum-type washing machine with extremely good performance can be provided, which can obtain a desired degree of cleaning regardless of changes in the load lid during swing washing.

[Brief explanation of the drawing]

Fig. 1 is a control block diagram of a drum-type washing machine according to the present invention, Figs. 2 to 4 are flowcharts for explaining the operation, Fig. 5 is a rear view showing the internal mechanism, and Fig. 6 is a diagram of another embodiment. This is a diagram equivalent to Figure 5. (5)... Rotating drum, (6H8) (11) (12)
... Pulley, (9) (13) ... Heald, (7)
... Dewatering motor, (10) ... Washing motor, (14)
... Sinch member, (15) ... Actuation member, (16
)...Microcomputer.

Claims (1)

[Claims] (1) A horizontal axis type rotating drum is rotated by a motor,
On the rotating drum side and the fixed side, a plurality of switch members or one switch member arranged at each predetermined rotation angle and one or a plurality of actuating members arranged at each predetermined rotation angle are provided. a detection unit that detects switching of the switch member when the rotating drum rotates; a comparison unit that compares the number of detections with a set number of times smaller than the number of the switch members; and an output of the comparison unit. A drum-type washing machine characterized by comprising: a motor control unit that reverses the motor in accordance with the rotation of the motor.