JPH0675632B2 - How to operate the washing machine soaking process - Google Patents

Description

TECHNICAL FIELD The present invention relates to a washing machine.

(B) Conventional technology As a conventional example, during the dipping and washing process performed before the washing process, a rest period of about 10 to 30 minutes is set, and the rotor blade is set to 1 to
A washing machine that rotates for 3 minutes is disclosed in Japanese Examined Patent Publication No. 64-1159 (D06F3).
3/02).

That is, by effectively stirring the stains when they are separated by the detergent, the stains are diffused and re-contamination of the laundry is prevented.

(C) Problems to be solved by the invention During the dipping and washing process, the effect of separating the dirt by the detergent is naturally exhibited as time passes, but in the conventional example, it is constant during the dipping and washing. Since the agitating force is applied, the first half having a weak detergent effect does not need to diffuse dirt so much, but the agitating force is the same as that in the latter half, and the laundry may be damaged.

The present invention solves such a problem in a washing machine.

(D) Means for Solving the Problems The present invention includes a rotary blade and a drive motor for driving the rotary blade, and a short drive control of the drive motor is performed in a dipping and washing step executed before the washing step. An agitation period of time and a long rest period for stopping the drive control of the drive motor are alternately provided, and in each of the agitation periods, the drive motor is drive-controlled to generate a weak water flow or a strong water flow, and the immersion is performed. As the washing process progresses, the stirring period for generating a weak water flow is shortened and the stirring period for generating a strong water flow is increased.

(E) Action That is, since the detergent effect is weak in the first half of the dipping and washing process, the laundry is moved to a degree where dirt can be easily separated from the laundry with a relatively weak stirring force, and the detergent effect is obtained in the latter half. By the time when is exerted, a relatively strong stirring force is applied to promote the separation of dirt and to diffuse the dirt.

(F) Embodiments Embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, (1) is the main body of the fully automatic washing machine,
It is composed of a machine frame (2) made of sheet metal and a polypropylene resin base (3) supporting the lower part of the machine frame (2). (4) is a washing outer tub suspended and supported by a suspension rod (5) ... and a vibration isolator (6) inside the main body (1), and (7) is freely rotatable in the outer tub (4) Washing and dehydration tank supported by
(8) is a rotor provided at the bottom of the dehydration tank (7),
(9) is a drive motor disposed on the outer bottom of the outer tub (4), which rotates the rotary vanes (8) during washing and rotates the dehydration tub (7) in one direction at high speed during dewatering.

(10) is an upper plate made of synthetic resin disposed on the upper part of the main body (1), and has a control box (11) formed at the front edge and a clothes inlet (12) formed at the center Has been done. (13) is an upper lid that opens and closes the inlet (12).

1 to 3, the resin base (3) is
It is shaped like a box with the top open, and the bottom (3a)
A U-shaped opening (14) is formed in the center. (15) ...
And (16) ... from the vertical position of the rim of the opening (14),
The support plates are formed by alternately projecting inwardly, whereby guide rails (17) are formed at both side edges and rear edge of the opening (14). Reference numeral (18) is a sound insulation plate having substantially the same shape as the opening (14) and is made of high specific gravity resin, and the opening (14) is formed along the guide rail (17) from the front side of the main body (1). Inserted inside. Further, by making the thickness of the sound insulating plate (18) substantially equal to the thickness of the guide rail (17), when the sound insulating plate (18) is inserted, the peripheral edge of the sound insulating plate (18) is the guide rail ( The opening (14) is sealed by closely contacting the inner surface of (17). Reference numeral (19) is an annular rib provided upright along the periphery of the opening (14). The rib (19) and the resin base (3) are provided.
An annular groove (20) is formed with the inner wall of the. (21) is a drain hose connection port provided below the electric parts such as the drive motor (9).

FIG. 4 shows a front view of the control box (11), and (22) shows washing-drainage / dehydration-rinse-drainage / dehydration-
Final rinse-setting key for the standard course consisting of each process of drainage and final dehydration, (23) a setting key for a shortened course that shortens each process time in the standard course, (24) a correction setting key for the washing time, (25) Rinse frequency correction setting key,
(26) is the setting key for adjusting the dehydration time, (27) is the start key for the manual program course set with these correction setting keys, and (28) is the setting key for the soaking process, which can be selected by setting it. The dipping and washing step described later is added before the course. (29) is a weather key described later.

Thus, when the washing machine is operated, the sound insulation plate (18) shields the opening (14) to block the leakage of the driving sound of the motor (9) and the dehydration sound. . Further, at the time of packaging, the sound insulation plate (18) is removed to insert a packing cushioning material (30) into the opening (14), and the cushioning material (30) is used to insert the outer tub (4). Can be fixed.

Furthermore, by providing an annular groove (20) at the periphery of the opening (14), water droplets that have condensed on the outer periphery of the outer tub (4) are stored here and do not leak out of the machine through the opening (14). I am trying.

Further, in particular, by using a resin having a high specific gravity as the material of the sound insulation plate (18), the weight and rigidity of the sound insulation plate (18) are increased, and the sound insulation plate (18) is less likely to rattle. There is. Therefore, rattling noise is not generated, and operating noise does not leak from the gap between the sound insulating plate (18) and the resin base (3) during rattling. According to the experiment, compared with the sound insulation plate (18) made of polypropylene,
2dB noise could be reduced.

By adhering a sound absorbing material or a sound insulating material to the sound insulating plate (18), noise can be further reduced.

Now, such a fully automatic washing machine is controlled by a microcomputer, and a washing machine control mechanism centering on this microcomputer (31) (for example, LC66506 type manufactured by Sanyo Electric Co., Ltd., hereinafter referred to as a microcomputer) is shown in FIG. It will be described based on.

The microcomputer (31) includes a CPU (32), RAM (33), ROM (3
4), timer (35), system bus (36) and input / output ports (37)-(42). The CPU (32)
Is composed of a control section (43) and a calculation section (44), the control section (43) fetches and executes instructions, and the calculation section (44) controls the control section ( Performs arithmetic processing such as binary addition, logical operation, increase / decrease, and comparison on the data given from the input device or memory by the control signal from 43). The RAM (33) is for storing data regarding the washing machine, and the ROM (34) is
The means for moving the washing machine, the setting of conditions for judgment, the rules for processing various information, and the like are read in advance.

The input port (37) (38) (39) has an input key circuit (45) composed of the various operation keys, a water level detector (46), and a lid safety switch (47) interlocking with opening and closing of the lid.
Based on these information, the output port (40) (41) (42), based on these information, LED drive circuit (48) composed of the LED group, buzzer for process end notification or abnormality notification The control signal is sent to the load drive circuit (50) including the circuit (49) and the bidirectional thyristor. The load drive circuit (50), according to a control signal from the microcomputer (31), the left and right rotation circuits (51) (52) of the rotor blade drive motor (9), the water supply solenoid valve drive circuit (53) and the drainage solenoid. Controls the operation of the valve drive circuit (54). (55) is a power supply circuit for supplying a voltage to the microcomputer (31), and (56) is a reset signal generating circuit.

The operation based on such a configuration will be described.

FIG. 6 shows the operation by inputting the weather key (29). That is, in each of the above courses, at the time of final dehydration,
When the laundry is located in the dewatering tub (7), the dewatering rotation may shake violently. To prevent this, loosen the loosening during the remaining 15 seconds of the final rinsing process. The rotor (8) is turned on for 0.3 to 0.7 seconds, which is called a water flow.
By reversing the laundry in a very short cycle of 4 seconds OFF to loosen the entangled laundry, the laundry is evenly positioned in the dehydration tub (7). The longer the loosening water flow is, the more effective it is, but on the other hand, it is not preferable that the washing time becomes long.

However, when the weather is bad and it seems difficult to dry, it is necessary to perform efficient dehydration. Therefore, on a day when the weather is bad, the user inputs the weather key (29). Based on this input, the microcomputer (31) extends the time of the loosening water flow for another 30 seconds to promote the uniformization of the laundry so that the dehydration rotation can be performed more smoothly. Extend the final dehydration time as follows. In addition, if the dehydration time is set to 30 seconds, laundry is generally liable to be damaged, and extending the dehydration time may rather damage the fabric, so extend the dehydration time. It is prohibited.

Next, the dipping and washing process which can be set by the dipping and washing setting key (28) will be described with reference to FIGS. 7 and 8.

As shown in FIG. 7, the dipping and washing step is performed for about 4 hours before the washing step, and a predetermined rest period (2 minutes, 3 minutes or 4 minutes 40 seconds) is set during this step, and the rotor blade ( 8) is inverted. The reversing cycle of this rotor (8) has three types of patterns, pattern A on the right 1.5 seconds ON-1 second OFF
-Left 1.3 seconds ON-1 second OFF-Right 1.4 seconds ON-1 second OFF-Left 1.4 seconds O
N-1 second OFF-Right 1.3 seconds ON-1 second OFF-Left 1.5 seconds ON-1 second OFF
-Right 1.4 seconds ON-1 second OFF-Left 1.4 seconds ON-1 second OFF -... inversion cycle is 0.5 seconds ON for pattern B-4.5 seconds OFF inversion cycle is 1.3 seconds ON-6.5 seconds for pattern C OFF
The inversion cycles of the above are respectively stored in the ROM (34), and the microcomputer (31) reads out any one of the patterns as appropriate to control the operation of the drive motor (9) (rotary blade (8)). Here, as is clear from the above patterns,
The pattern A can generate a small reverse flow, the pattern B can generate a weak water flow because the ON time per unit time is short, and the pattern C can generate a strong water flow because the ON time per unit time is long.

Furthermore, the dipping and washing process has four sections (T ₁ ,
T _2, T _3, is divided into T _4), in each interval with a predetermined pause period, said read any of each pattern is performed. In the following description, pattern A
For 3 minutes, pattern B for 20 seconds, pattern C
Is 2 minutes.

That is, in the section T ₁ , as shown in FIG. 8A, the water flow of the pattern A is first stirred for 3 minutes, whereby the detergent is well dissolved in the washing liquid. Then, after performing the stirring operation for 20 seconds with the water flow of pattern B 5 times, 2 times with the water flow of pattern C
After stirring for a minute, the stirring operation of the pattern B is executed again 5 times.

After the section T ₂ , only pattern B and pattern C are executed,
In the section T ₂ , the pattern C is executed once every 6 times as shown in FIG. 8 (b), and in the section T _{3 the} pattern C is executed once every 3 times as shown in FIG. 8 (c). 8th in section T ₄
As shown in FIG. 9D, the pattern C is executed once every two times.

As described above, in the dipping and washing process of the present embodiment, the ratio of stirring with the strong water flow is increased stepwise.

In other words, since the detergent effect is weak in the first half of the soaking and washing process,
Here, with relatively weak stirring force, the laundry is moved to the extent that dirt can be easily separated from the laundry, and when the washing effect is being exerted in the latter half of the period, a relatively strong stirring force is applied to separate the dirt. It also helps to disperse dirt.

As a result of experiments, in such a dipping and washing process, the washing ratio was improved from 40.7% to 44.0% as compared with the conventional example (the cycle of the short-time stirring operation is constant during the dipping and washing process). , Was able to reduce the laundry damage rate from 2.16% to 2.09%.

Incidentally, the cleaning rate and the damage rate were calculated by the following equations.

(G) Effect of the Invention In the washing machine of the present invention, it is possible to obtain a good soaking and washing effect by suppressing the cloth pain and promoting the separation of dirt.

[Brief description of drawings]

FIG. 1 is a side view showing a cross section of a main part of a washing machine according to the present invention, FIG. 2 is a bottom view of a resin base, FIG. 3 (a) is a plan view of a sound insulation plate, and FIG. Fig. 4 is a front view of the control box, Fig. 5 is a block circuit diagram of the control mechanism, Fig. 6 is a flow chart showing the operation, Fig. 7 is a time chart of a washing course, and Fig. 8 is a time of a dipping and washing process. It is a chart. (8) ... Rotary blade, (9) ... Drive motor, (31) ... Microcomputer (control means), (34) ... ROM (storage means).

Claims (1)

[Claims] 1. A rotary vane and a drive motor for driving the rotary vane, the immersion washing step being performed before the washing step,
A short stirring period for controlling the drive of the drive motor and a long rest period for stopping the drive control of the drive motor are alternately provided, and in each of the stirring periods, a weak water flow or a strong water flow is generated. A method for operating a washing and washing process of a washing machine, comprising: controlling a drive motor to reduce a stirring period for generating a weak water flow and increasing a stirring period for generating a strong water flow as the dipping and washing process progresses.