JPH039792A - Washing machine - Google Patents

Abstract

PURPOSE:To effectively perform dewatering process corresponding to the weather by a method wherein a rotary propeller driving motor is reversed at short intervals for a specified time period in the last period of a final rinsing process, and a controller extends the specified time period corresponding to an input by a specified key. CONSTITUTION:When laundry is unevenly put in a dewatering drum 7 during final dewatering process, the drum rotates with a violent vibration. To prevent this, a rotary propeller 8 is reversed at short intervals for 15 seconds in the remaining time period of final rinsing step to loosen the entangled laundry and uniformly place them in the drum; this is referred to as loosening current. When it is a bad weather and a user presses a weather key 29, a microcomputer extends the time period of loosening current by 30 seconds to stimulate even distribution of the laundry and smooth rotation in dewatering process, and also extends the final dewatering time period.

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, Japanese Patent Laid-Open No. 137096/1983 (D06F33102) discloses a washing machine in which the rotor blades are reversed in small increments just before the end of the rinsing process.

That is, by reversing the rotor blades in small increments, the laundry is untangled, so that the laundry is evenly positioned in the tub during spin-drying, and the spin-drying rotation is performed smoothly.

Also, the longer the small inversion time is, the higher the peeling effect will be, but from the practical point of view of the washing machine, it is not desirable for the total washing time to become unnecessarily long, so this time should be set in advance to a standard time. It is set.

(C) Problems to be Solved by the Invention In the conventional example, when the drying rate seems to be poor, such as during bad weather, the user tries to remove as much moisture as possible from the laundry by extending the spin-drying time. However, if the spin-drying time is extended too much, it may damage the laundry, and since the extension time is limited, there is a problem that it is impossible to satisfactorily carry out efficient spin-drying depending on the weather etc. Ta.

The present invention solves these problems in washing machines.

(d) Means for Solving the Problems The washing machine of the present invention reverses the rotation blade drive motor in small increments for a predetermined period of time at the end of the final rinsing process, and in response to a predetermined key input, 'fhjj' is provided with a control means that opens at a predetermined time and for a predetermined time.

The predetermined time may be extended within the time of the rinsing step, or may be extended from the time of the rinsing step.

(e) Effect: If you think that the drying rate is poor outdoors due to bad weather, you can input the specified key before the dehydration process.
One small reversal movement is carried out for a longer time than specified. As a result, the laundry is sufficiently loosened and the distribution within the tub becomes more uniform.

(·\)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 resin base (3) made of polypropylene that supports the lower part of this machine frame (2). (4) is a washing outer tub that is suspended and supported inside the main body (1) by hanging rods (3)... and vibration isolators (6)...
7) is a washing and dehydration tank rotatably supported in the outer tank (4), (8) is a rotary blade disposed at the bottom of the dehydration [(7), and (9) is a 4) rotates the rotary blade (8) during washing with a drive motor disposed on the outer bottom of the washing machine;
During dewatering, the dewatering 1 m' (7) is rotated in one direction at high speed.

(10) is a top plate made of synthetic resin disposed on the top of the main body (1), and has a control box (]]) formed on the front edge, and a clothes 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 resin base (3) is
It is formed into a box shape with an open top, and its bottom (3a
) A 0-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) Guide rails (17) are formed on both side edges and the rear edge. (
18) is a sound insulating plate having almost the same shape as the opening (14), made of high specific gravity resin, and extending from the front side of the main body (1) along the guide rail (17) to the opening (14).
inserted within. Moreover, the thickness of the sound insulation board (18) is
By making the thickness approximately equal to the thickness of the guide rail (17), when the sound insulation plate (18) is inserted, the sound insulation plate (
The circular edge of the guide rail (18) is in close contact with the inner surface of the guide rail (17) to seal the opening (14). (
Reference numeral 19) denotes an annular rib erected along the periphery of the opening (14), and this rib (19) and the inner wall of the resin base (3) form an annular groove (20). (21) is a drain hose connection port provided below electrical components such as the drive motor (9).

FIG. 41 shows a front view of the control box (11), and (22) shows the washing, loading, dewatering, rinsing, draining, and
Setting key for the standard course consisting of dewatering - final rinsing, draining, and final dewatering steps, (23) is the setting key for a shortened course that shortens the time for each process in the standard course, (24) is the washing time correction setting key key, (25) is the rinse number correction setting key, (26) is the dehydration time correction setting key, (27)
) is the start key for the manual program course set with each of these correction setting keys, and (28) is the setting key for the soaking process. By setting this, the soaking process described below will be added before the selected course. be done. (29) is a weather key which will be described later.

Therefore, when operating the washing machine, the sound insulation plate (I8)
By shielding the opening (14), it is possible to block the notification of the driving sound of the motor (9) and the sound of dehydration. Also, when packing, by removing the sound insulating plate (18), the packing I! A shock absorber (30) can be inserted and the outer tank (4) can be fixed with this YT shock absorber (30).

Further, by providing an annular groove (20) on the periphery of the opening (14), water droplets condensed on the outer periphery of the outer ff1 (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 resin with high specific gravity as the material of the sound insulation board (18), the M amount and rigidity of the sound insulation board (18) are increased, and the sound insulation board (18) becomes less likely to rattle. ing. Therefore, no rattling noise is generated, and no operating sound leaks out from the gap between the sound insulating plate (18) and the resin base (3) during rattling. According to experiments, it was possible to reduce the BSi sound by about 2 d 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).
<For example, the LC66506B model manufactured by Sanyo Electric Co., Ltd., hereinafter referred to as a microcomputer), is the control mechanism of a washing machine.
This will be explained based on the diagram.

The microcomputer (31) includes a CPU (32), a RAM
(33), ROM (34), timer (35), system bus (36), and input/output ports (37) to (42). The CPU (32) has a control unit (43
) and an arithmetic unit (44), and the control unit (43
) fetches and executes instructions, and the arithmetic unit (4
4) performs arithmetic processing such as binary addition, logical operation, increase/decrease, and comparison on data provided from the input device or memory in response to a control signal from the control unit (43) in the instruction execution stage. The RAM (33) is for storing data regarding the washing machine, and the ROM (34)
In this method, the means for operating the washing machine, the setting of conditions for judgment, the rules for processing various information, etc. are loaded in advance.

The input boat (37), (38), and (39) include an input key circuit (45) consisting of the various operation keys, water level detection! (46) and the top lid safety switch (47) that is linked to the opening and closing of the top lid, and based on this information, the output boats (40), (41), and (42) are connected to the LED group. A control signal is sent to an LED drive circuit (48), a process end notification or abnormality notification buzzer circuit (49), a load drive circuit (50) comprised of a bidirectional cyrisk, and the like. The load drive circuit (50) controls the left and right rotation circuits (51) (52) of the rotary blade drive motor (9) according to the control signal from the microcomputer (31).
, controls the operation of the water supply solenoid valve drive circuit (53) and the drainage solenoid valve drive circuit (54). (55) is the microcomputer (
31) is a power supply circuit that supplies voltage, and (56) is a reset 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-mentioned courses, if the laundry is located unevenly in the spin-drying tank (7) during the final spin-drying, there is a risk that the spin-drying rotation will shake violently. In order to prevent this, during the remaining 15 seconds of the final rinsing process, the rotation *<8) is increased by 0.3~
The laundry was rotated in a very short cycle of 0.7 seconds 0N - 0.4 seconds OFF to loosen the laundry that was getting tangled, and to ensure that the laundry was evenly placed in the spin-drying tank (7). ing. The longer the time for this loosening water flow, the more effective it is, but on the other hand, it is also undesirable that the washing time becomes longer, so this 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 key (29). 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 and make the spin cycle run more smoothly. Extend the final dehydration time as shown in the table. In addition, if the spin-drying time is set to 30 seconds, the laundry tends to get hot easily, and extending the spin-drying time may actually damage the fabric, so it is recommended to extend the spin-drying time. It is prohibited.

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

As shown in FIG. 7, the soaking and washing process is carried out for about 4 hours before the washing process, and during this process, the rotary blade ( 8) is inverted. The reversal cycle of this rotary blade (8) has three types of patterns, and pattern A is 1.5 seconds 0N-
1 second OFF F-Left 1.3 seconds ON-1 second 0FF-Right 1.4
seconds 0N-1 seconds 0FF-left 184 seconds 0N-1 seconds 0FF-right 1.3 seconds 0N-1 seconds 0FF-fE, 1.5 seconds ON-1 seconds 0FF-right 1.4 seconds 0N-1 seconds 0FF- Left 1.4 seconds 0N
The reversal cycle is 0N for 0.5 seconds - 4.5 seconds OFF as pattern B, and the reversal cycle is 0N for 1.3 seconds - 6.5 seconds OFF as pattern C. each reversal cycle is stored in said ROλI (34);
The microcomputer (31) reads only one pattern as appropriate and controls the operation of the drive motor (9) (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 r, T + ), and in each section, one of the patterns is read out and executed with a predetermined pause period. In addition, in the following explanation, the operation time of pattern A is 3 minutes, and the operation time of pattern B is 3 minutes.
pattern C is for 20 seconds and pattern C is for 2 minutes.

That is, in section 1'F1, as shown in FIG. 8(a), the detergent is first agitated for 3 minutes with the water stream of pattern A, thereby thoroughly dissolving the detergent in the washing 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, and section T! In section T, pattern C is executed once every 6 times as shown in Figure 8 (b), and in section T, pattern C is executed once every 3 times as shown in Figure 8 (c). T,
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 in stages.

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 it is easy to separate the dirt from the laundry, and later, when the detergent effect has been exerted, a relatively strong agitation force is used. This helps to separate the dirt and also diffuses the dirt.

In such a soaking process, as a result of experiments, the cleaning rate was 40.7% compared to the Gi=rice example (where the short stirring cycle was soaked T and constant during the process). From 44.
Improved laundry damage rate to 0% and reduced laundry damage rate by 2.16q;
, to 2.09%.

Incidentally, the cleaning rate and damage rate are calculated using the following formula. There is no need to excessively extend small rotations.

[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 treasure 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. 4 is a front view of the control box, FIG. 3 is a block circuit diagram of the control frame structure, FIG. 6 is a flowchart showing the operation, and FIG. 7 is a table of the washing course. The chart, FIG. 8, is a time chart of the soaking and washing process. (8)...rotor blade, (9)...drive motor, (29
)... Weather key (predetermined key), (31)... Microcomputer (control means). (g) Effects of the invention

Claims (1)

[Claims] (1) The rotary blade drive motor is reversed in small increments for a predetermined period of time at the end of the final rinsing process, and is characterized by being provided with a control means for lengthening the predetermined period of time in response to a predetermined key input. washing machine.