JPH0751179B2 - Washing machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a washing machine.

(B) Conventional Technology As a conventional example, there is a washing machine in which the rotary blade is flipped in small increments immediately before the end of the rinsing process, as disclosed in JP-A-62-137096 (D0).
6F33 / 02).

That is, by rotating the rotary blades in small steps, the entanglement of the laundry is loosened so that the laundry can be uniformly positioned in the tub during dehydration, and the dehydration rotation can be smoothly performed.

Also, the longer the reversal time of the small steps, the higher the loosening effect, but in practice of the washing machine, it is not preferable that the total washing time becomes too long, so this time is set to a standard time in advance. Has been done.

(C) Problems to be Solved by the Invention In the conventional example, when the dryness is considered to be poor, such as in bad weather, the user tries to extend the dehydration time to remove as much water as possible from the laundry. However, if the dehydration time is extended excessively, it may damage the laundry, and the extension time is limited, so there was a problem that efficient dehydration depending on the weather could not be performed satisfactorily. .

The present invention, in a configuration for generating a loosening water flow for a predetermined time at the end stage in the final rinsing step before the final dehydration step, always lengthening the predetermined time may unnecessarily increase the total operating time, while the predetermined time If you do not make it longer, dehydration will not be performed smoothly and if the weather is bad for that reason, the dehydration time will have to be lengthened considerably and the laundry will be damaged, so adjust the predetermined time according to the weather It intends to provide a washing machine that is designed to do so.

(D) Means for Solving the Problems The present invention is a washing machine that performs washing, rinsing, and dehydration steps, and generates a loosening water flow for a predetermined time at the end of the final rinsing step before the final dehydration step. When the weather information input section, a judgment means for judging whether or not the weather information indicating that the weather is bad has been inputted by the weather information input section, and the judgment information inputting for the weather information indicating that the weather is bad And a predetermined time changing means for lengthening the predetermined time.

The predetermined time may be lengthened within the time of the rinsing process or extended from the rinsing process time.

(E) Action When the weather is bad and the outdoor sun drying efficiency is poor, the predetermined time of the loosening water flow at the end stage of the final rinsing step becomes long based on the input of the weather information that the weather is bad. As a result, the laundry is sufficiently unraveled, the distribution of the laundry in the tub is made more uniform, and the dehydration is smoothly performed to improve the dehydration efficiency. Therefore, the sun can be dried smoothly even if the weather is bad.

(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), which is made of high specific gravity resin and which extends from the front side of the main body (1) along the guide rail (17) to the opening (14). 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 (18). 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 hereinafter, a washing machine control mechanism centering on this microcomputer (31) (for example, LC66506B 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 cloth in 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). On the basis of this input, the microcomputer (31) extends the time of the loosening water flow for another 30 seconds to promote uniform laundry and to make the dehydration rotation more smoothly. Extend the final dehydration time as follows. In addition, if the dehydration time is set to 30 seconds, laundry is often easily 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. 8 (a), 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 power, the laundry is moved to the extent that dirt can be easily separated from the laundry, and when the detergent effect is being exerted in the latter half of the period, relatively strong stirring power is applied to separate 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 According to the present invention, when the weather is bad and the outdoor sun-drying efficiency is poor, the predetermined loosening water flow at the end stage of the final rinsing process is input based on the input of the weather information that the weather is bad. Therefore, even if the weather is bad, the laundry can be loosened sufficiently and the distribution of the laundry in the tub can be made more uniform so that dehydration can be performed smoothly and dehydration efficiency can be improved. Therefore, the sun drying can be smoothly performed.

Further, the predetermined time is longer when the weather information indicating that the weather is bad is input, and is not always long, and therefore the total operating time of the washing machine is unnecessarily long. The situation can be resolved.

Furthermore, even if the weather is bad, it is not necessary to undesirably lengthen the dehydration time, and damage to the laundry can be suppressed.

[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, (29) ... Weather key (predetermined key), (31) ... Microcomputer (control means).

Claims (1)

[Claims] 1. A washing machine which executes washing, rinsing and dewatering steps and generates a loosening water flow for a predetermined time at the end of the final rinsing step before the final dewatering step. A determining means for determining whether or not the weather information indicating that the weather is bad is input by the input unit, and a predetermined time period for extending the predetermined time when it is determined by the determining means that the weather information is input for the bad weather. A washing machine comprising: a changing unit.