JPH039793A - Washing machine - Google Patents

Abstract

PURPOSE:To stimulate the removal of filth with avoiding damages to cloths and attain a good effect of soak-washing by a method wherein during agitation period, a controller reads out weak rotation cycle or strong agitation cycle from a memory to control the action of a motor, and read out the strong rotation cycle more frequently with the progress of soak-washing. CONSTITUTION:A rotary propeller 8 is reversed for a short time period after a certain rest time period in soak-washing process. The reverse cycle of the rotary propeller 8 includes three patterns: the pattern A generates a reverse current at short intervals, the pattern B a weak current because of a short on-period per unit time, and the pattern C a strong current because of a long one-period per unit time. The soak-washing process is divided into four time periods T1 to T4 for every one hour, and either one of the patterns is read out and performed in each time period after a certain rest time period. In the beginning of soak-washing process, as the effect of detergent is weak, the laundry is agitated by a strong agitation force, and when the detergent works effectively in the later period, a rather strong agitation is applied to stimulate the removal of filth and to disperse filth.

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to a washing machine.

(B) Prior Art As a conventional example, a washing machine rotates the rotor blades for 1 minute to 3 minutes after a period of about 1 minute to 30 minutes on the body during the soaking process performed before the washing process. It is shown in Japanese Patent Publication No. 1159/1988 (D06F33102).

That is, by effectively agitating the stains when they are separated by the detergent, the stains are diffused and the laundry is prevented from being recontaminated.

(c) Problems to be Solved by the Invention During the soaking and washing process, the dirt separation effect of the detergent naturally becomes better as time passes! However, in the conventional method, a constant agitation force is applied during soaking, so the same agitation force is applied during the latter part, even though there is no need to spread the dirt as much during the first half when the detergent is less effective. There is a risk that laundry may be easily damaged.

The present invention solves these problems in washing machines.

(d) Means for Solving the Problems The present invention provides a washing machine in which a plurality of short agitation periods are provided at predetermined body wash periods during the soaking process performed before the washing process. A storage means for storing a weak rotation cycle in which the energization time per unit time is short and a strong rotation cycle in which the energization time is long per unit time as the drive form of the rotary blade driving motor; A control means is provided for reading out a cycle or a strong rotation cycle from the storage means and controlling the operation of the motor accordingly, and reading out more of the strong rotation cycles as the soaking process progresses.

In addition, as a means of varying the energization time per unit time, it is possible to lengthen or shorten the ON time of the energization/disconnection cycle, or to appropriately control the energization/disconnection of the motor control switching element in units of half cycles of the power supply voltage. , substantially changing the rotational speed of the motor.

(e) Effect: In the first half of the soaking process, the detergent effect is weak, so here, a relatively weak agitation force is used to move the laundry to the extent that dirt can be easily separated from the laundry, and in the second half, the detergent effect is weak. When this is achieved, a relatively strong agitation force is applied to promote separation of the dirt and to diffuse the dirt.

(f) Example Embodiments of the present invention will be described based on the drawings.

In Figure 1, (1) is the main body of a fully automatic washing machine,
It consists of a machine frame (2) made of sheet metal and a four-finger base (3) made of propylene that supports the lower part of this machine frame (2).
Sign. (4) has a hanging rod (5) inside the main body (1)...
and a vibration isolator (6)... (7) is a washing and dewatering tank rotatably supported inside the core (Wi<4''), (8) is this A rotary blade (9) is installed at the bottom of the dehydration tank (7), and a drive motor (9) is a drive motor installed at the outside bottom of the outer 1'! (4).
8) to rotate the dehydration tank (7) in one direction at high speed during dehydration.

(]O) is the top plate of the synthetic four-finger shank installed on the top of the main body (1), with a control box (11) on the front edge.
is formed, and there is a clothing slot (12) in the center.
is formed. (13) is an upper lid that opens and closes the input port (12).

In FIGS. 1 to 3, the four-finger base (3) is
It is formed into a box shape with an open top, and its bottom (3a
) A U-shaped opening (14) is formed in the center. (1
5) ... and (16) ... are support plates formed to protrude inward alternately from the upper and lower positions of the mouth edge of the opening (14), respectively, so that the opening (14) Both (!1
A guide rail (17) is formed on one edge and the rear edge. , (18) is a sound insulating plate having almost the same shape as the opening (14), and is made of high-density oil. 14) is inserted within. Furthermore, by making the thickness of the sound insulation board (18) approximately equal to the thickness of the guide rail (17), when the sound insulation board (18) is inserted,
The periphery of the sound insulating plate (]8) is in close contact with the inner surface of the guide rail (17) to seal the opening (14). (19) is an annular rib erected along the periphery of the opening (14), and this rib (19) and the inner wall of the four finger base (3) form an annular J (20). .

(21) is a drain hose connection port provided below the electric components such as the drive motor (9).

FIG. 4 shows a front view of the control box (11), and (22) is a setting key for a standard course consisting of each step of washing, draining, dewatering, rinsing, draining, dewatering, final rinsing, draining, and final dewatering; (23) is a setting key for a shortened course that shortens each process time in the standard course, (24) is a washing time correction setting key, (25) is a #r positive number setting key for the number of rinses (26) is a dehydration Time correction setting key (27
) is the start key for one T-i11 program course set with each of these mackerel setting keys, and (28) is the setting key for the soaking process. A washing process is added. (2
9) is a weather key which will be described later.

Therefore, when operating the washing machine, the sound insulation plate (18)
By shielding the opening (14), it is possible to block the leakage of the driving sound of the motor (9) and dehydration sound. Also, when packing, by removing the sound insulating plate (18), a packing cushioning material (3t) is inserted into the opening (14), and this cushioning material (30) is used to
'! (4) can be fixed.

Furthermore, by providing an annular groove (20) on the periphery of the opening (14), water droplets condensed on the outer periphery of the outer tank (4) are accommodated here and prevented from leaking out of the machine from the opening (14). That's what I do.

In particular, by using a resin with a high specific gravity as the material of the sound insulation board (18), the weight and rigidity of the sound insulation board (18) are increased, and the sound insulation board (18) becomes less likely to rattle. There is. Therefore, no rattling noise is generated, and no operating sound leaks out from the gap between the sound insulating plate (18) and the four-finger base (3) during rattling. According to experiments, it was possible to reduce noise by about 2 dB compared to when the sound insulating plate (18) was made of polypropylene.

Note that the noise can be further reduced by attaching a sound absorbing material or a sound insulating material to the sound insulating plate (18).

Now, such a fully automatic washing machine is controlled by a microcomputer, hereinafter referred to as this microcomputer (31).
The control mechanism of the washing iM machine centered on the LC66506B model manufactured by Sanyo Electric Co., Ltd. (hereinafter referred to as microcomputer) will be explained based on FIG. 5.

The microcomputer (31) includes a CPU (32), an RA
M (33), RO~1 (34), timer (35), system bus (36) and input/output capo) (37)~(4
It consists of 2). The CPU (32) is composed of a control section (43) and an arithmetic section (44), the control section (43) takes out and executes instructions, and the arithmetic section (44) executes the instructions. In the control section (43)
It performs arithmetic processing such as binary addition, logical operation, increase/decrease, and comparison on data given from input devices and memory using control signals from the controller. The RAM (33) is for storing data regarding the washing machine, and the ROM (33) is for storing data regarding the washing machine.
34) is to read in advance the means for operating the washing machine, the setting of conditions for judgment, the rules for processing various information, etc.

The input ports (37), (38), and (39) are connected to an input key circuit (45) consisting of the various operation keys, a water level detection 6 (46), and a top lid safety switch (47) that is linked to the opening and closing of the top lid. Based on this information, the LED drive circuit (48) consisting of the LED group is connected to the output board (40) (41) (+2) based on this information. "II!tK alarm or abnormality alarm buzzer circuit (49
), a control signal is sent to a load drive circuit (50), etc. composed of a bidirectional thyristor, etc. The load drive circuit (50) controls the left and right rotation circuit (51) of the rotor blade drive motor (9) according to the control signal from the microcomputer (31).
) (52), controls the operation of the water supply solenoid valve drive circuit (53) and the drainage solenoid valve drive circuit (54). (55) is a t-source circuit that supplies voltage to the microcomputer (31); (56)
This is a beam cent signal generation circuit.

The operation based on such a configuration will be explained.

FIG. 6 shows the operation performed by inputting the weather key (29). That is, in each of the above courses, during the final dehydration, the dehydration 1'! (7) Wash inside? It is common for the dehydration rotation to shake violently when the JI items are placed on one side, so in order to prevent this, the remaining 1
For 5 seconds, the rotary blade (8) is heated to 0.000000000000000000000000000000000000000000000000000 level, called a water flow.
By rotating the machine in very short cycles of 3 to 0.7 seconds 0N - 0.4 seconds OFF, loosen the laundry that was becoming tangled.
The pre-washed laundry is placed uniformly in the dewatering tank (7). The longer the time for this loosening water stream, the more effective it is, but on the other hand, it is not preferable because it increases the washing time, so the time is set at 15 seconds.

However, if the weather is bad and it seems difficult to dry, it is necessary to carry out efficient dehydration. Therefore, on days when the weather is bad, the user inputs the weather keys (two). Based on this input, the microcomputer (31) extends the time of the stripping water flow for an additional 30 seconds to help uniformize the laundry so that the spin-drying rotation can be performed more smoothly. Extend the final dehydration time as follows. In addition, if the spin-drying time is set to 30 seconds, the laundry is likely to be easily damaged, and extending the spin-drying time may actually damage the fabric, so extend the spin-drying time. It is prohibited.

Next, the soaking process that can be set using the soaking setting key (28) will be explained based on FIGS. 7 and 8.

The soaking process is carried out for about 4 hours before the washing process, as shown in FIG. The wings (8) are inverted. The reversal cycle of this rotary blade (8) has three types of patterns, and pattern A is the right ON for 165 seconds.
-1 second OFF-Left 1.3 seconds C1, knee 1131 OFF-
Right 1.1 seconds 0N - 1 second 0FF - Left 1.4 seconds oN - seconds 0
FF-Right 1.3 seconds 0N-1 second 0FF-Left 1.5 seconds ON-
The reversal cycle of 1 second 0FF - right 1.4 seconds 0N - 1 second 0FF - left 1.4 seconds 0N - 1 second 0FF - ... is pattern B: 0.5 seconds 0N - 4.5 seconds OFF reversal. Cycle is pattern C: 1.3 seconds ON - 6.5 seconds OFF
The reversal cycles of the ROM (34) are stored in the ROM (34), and the microcomputer (31) reads any of the patterns as appropriate to control the operation of the drive motor (9) (Ilii1 rotor blade (8)). Here, as is clear from the above patterns, pattern A is a small inversion water flow, pattern B is a weak water flow because the ON time per unit time is short, and pattern C is a weak water flow because the ON time per unit time is long. Can generate strong water currents.

Furthermore, the soaking process is divided into four sections (T, ,
T, , T, , T4), and in each section, one of the above-mentioned patterns is read out and executed after a predetermined rest period. In the following explanation, the operation time of pattern A is 3 minutes, pattern B is 20 seconds, and pattern C is 2 minutes.

That is, in section T1, as shown in FIG. 8(a), first, the detergent is stirred for 3 minutes with the water flow of pattern A, thereby 1) the detergent is well dissolved in the washing +1 liquid. Thereafter, a stirring operation for 20 seconds with the water flow of pattern B is performed 5 times, followed by stirring for 2 minutes with the water flow of pattern C, and the stirring action of pattern B is performed again 5 times.

After section T, only pattern B and pattern C are executed. In section T, pattern C is executed once every six times as shown in Fig. 8 (b), and in section T, pattern C is executed as shown in Fig. ), pattern C is executed once every three times, and in section T4
Then, as shown in FIG. 8(d), pattern C is executed once every two times.

As described above, in the soaking and washing process of this embodiment, the ratio of stirring with strong water stream increases step by step.

In other words, the detergent effect is weak in the first half of the soaking process, so
Here, a relatively weak agitation force is used to move the laundry to the extent that dirt can be easily separated from the laundry, and in the later stages, when the detergent's effectiveness has been exerted, a relatively strong agitation force is applied to separate the dirt. It also promotes dirt and spreads dirt.

As a result of experiments, the conventional method (
The cleaning rate is 40.7% compared to the short stirring operation cycle (during the soaking process). 4.0%
In addition to increasing the laundry damage rate to 2.16! 'il
i to 2.09%.

Incidentally, the cleaning rate and damage rate were calculated using the following formula.

(G) Effects of the Invention In the washing machine of the present invention, it is possible to suppress fabric damage while promoting the separation of dirt and obtain a good soaking effect.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional side view of the main parts of the washing machine of the present invention, Fig. 2 is a bottom view of the tB fat base, Fig. 3 (a) is a plan view of the sound insulating plate, and Fig. 3 (b) is a side sectional view of the same. Figure 4 is a front view of the control box, Figure 5 is a prong circuit diagram of the control mechanism, Figure 6 is a flowchart showing the operation, Figure 7 is a time chart of the washing course, and Figure 8 is the soaking process. This is a time chart. (8)...rotor blade, (9)...drive motor, (31
)...Microcomputer (control means), (34
)...ROM (memory means). Figure 1 Dekonjin Sanyo Oki Co., Ltd.

Claims (1)

[Claims] (1) During the soaking process performed before the washing process, multiple short stirring periods are provided at predetermined intervals on the body. A storage means for storing a weak rotation cycle with a short energization time per unit time and a strong rotation cycle with a long energization time per unit time; A washing machine characterized in that it is provided with a control means that controls the operation of the first half motor in accordance with this, and reads out a large number of first half rotation cycles as the soaking process progresses.