JPH01178294A - Washing machine - Google Patents

Abstract

PURPOSE:To improve a function of charging a detergent by providing a plurality of reservoirs for the detergent above a washing tank while providing a water supply change-over means for supplying selectively water to the respective reservoirs. CONSTITUTION:When prewashing is desired before regular washing, a user feeds a predetermined amount of detergent into first and second reservoirs 16, 17 respectively. A prewashing selection switch 9 and change-over lever 12 are set to 'prewashing' to start a program. Then, a microcomputer 27 starts water supply after exciting a solenoid 24 to direct an outlet end 22b of the other water path 22 toward the second reservoir 17. Water is supplied through the respective water paths 21, 22 and the detergent in the second reservoir 17 is washed away by water from the other water path 22 to be charged from the front end side 22b into a washing tank. After the completion of prewashing and drain, the solenoid 24 is demagnetized so that the outlet end 22b of the other water path 22 is returned toward the first reservoir 16 by an energizing force of a spring 26.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a washing machine that can automatically introduce a washing treatment agent into a washing tub.

(B) Conventional technology As a conventional example, a storage chamber for a finishing agent is provided above the washing tank 7 (11), and by supplying water into the storage chamber, the finishing agent in the storage chamber is flushed into the washing tub. However, in the 1960s
It is shown in Publication No. 2-38626 (D06F 39102).

(c) Problems to be Solved by the Invention In the conventional example described above, - Since the injection of the same amount of laundry treatment agent is limited, the range of the program is limited, and as a result, the improvement in the product value of the washing machine is prevented. Was.

In view of such problems, the present invention improves the function of adding laundry treatment agents by making it possible to add laundry treatment agents multiple times in a washing machine, thereby increasing the commercial value. It is something that is aimed at raising the bar.

(2) Means for Solving the Problems The washing machine of the present invention has a storage section for cleaning agents such as detergents and finishing agents above the washing tub, and by supplying water into the storage section, The processing agent accumulated in the storage section is flushed into the washing tub, and a plurality of storage sections are provided, and a water supply switching means is provided for selectively supplying water to each storage section. It is something.

(E) Function: If a predetermined amount of detergent is placed in each reservoir in advance, the washing process using the detergent can be repeated multiple times.
Furthermore, if detergent and finishing agents are placed in each reservoir, they can be added at a predetermined time by the water supply switching means.

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

In FIG. 1, (1) is a machine frame of a washing machine, inside which an outer tub (2) is elastically suspended and supported. A dewatering/washing tub (3) is rotatably disposed inside the outer tub (2). A rotary blade (not shown) is disposed at the bottom of the washing tub (3), and the washing tub (3) and the rotary blade are connected to a power transmission mechanism or a drive motor (not shown), so that the rotary blade is reversed during washing. During spin-drying, the washing tub (3) is rotated in one direction at high speed.

(4) is a top plate that is placed and fixed on the upper end of the machine frame (1), and as shown in Fig. 2, it has a frame shape with a clothing slot (5) in the center, and 6>(7) is formed into a box shape, and the front part (6) accommodates various input switches mounted on the control board, and the rear part (7) houses a power switch, a water supply solenoid valve (8), and a water supply solenoid valve (8), which will be described later. A prewash selection switch (9) is housed therein. (10)... is a group of operation buttons for operating the various input switch groups, (11) is a hose connection from a water supply source, and (12) is a switching lever for the prewash selection switch (9). .

(13) is pivotally supported on the rear edge of the clothes input port (5), and when closed, it becomes a lid so that the clothes input port (5) can be opened and closed.

The upper M (13) is integrally formed with a wide groove (14) that opens horizontally on the rear end side (14a) and opens vertically on the front end side (14b). ) is partitioned in the left and right direction by a partition wall (work 5), and this is divided into
Assuming a storage section (16) and a second storage section (17), the area of the first storage section (16) is approximately 2 of the area of the second storage section (17).
It has been set to double. The first storage part (16) and the second storage part (16)
Each bottom surface of the storage section (17) is provided with a gentle slope in the shape of a forest, and drain holes (18) and (19) facing the washing tub (3) are provided at the bottom of the bottom surface. . (20
＞ is a lid that can be opened and closed on the upper surface of the groove (14).

Then, the water outlet side of the water supply solenoid valve (8) is bifurcated, one waterway (21) facing directly above the washing tub (3), and the other waterway (22) facing the middle part of the washing tank (3). (22a) is formed into a bellows shape, and its water outlet end (22b) is connected to the groove <1.
4) is closely opposed to the rear end side (14a). The outlet end (22b) of the other waterway (22) is as shown in FIG.
It is latched to a frame-shaped water injection guide body (23) and connected to a connecting rod (25) of a solenoid (24), and normally, by the biasing force of a spring (26), it is attached to the rear of the first storage part (16). Although it faces the end surface side, by energizing the solenoid (24), the plunge "v- (24a) is attracted and the connecting rod is displaced against the bias of the spring (26), and the water outlet end ( 22b) can be directed toward the second reservoir (17).The other water channel (22), water injection guide body (23), solenoid (24), and spring (
The water supply switching means and the first and second reservoirs (16) and (17) constitute a detergent injection means.

Figure 6+t shows the control mechanism of the washing machine centered on a microcomputer (27) (hereinafter referred to as a microcomputer), and the microcomputer 27) has a CPU (2g), a RAM (2g), and a RAM (2g).
9), ROM (30), timer (31), system lot (32), and input/output ports (33) to (39). The CPU (28) is composed of a control section (40) and an arithmetic section (41). It performs arithmetic processing such as binary addition, logical operation, increase/decrease, and comparison on data given from input devices and memory in response to control signals from the control section (40). The RAM (29>) is for storing data related to the washing machine, and the ROM (30) is for storing the means for stopping the washing machine in advance, setting conditions for judgment, and processing various information. It is used to load rules etc. for doing the following.

The input boats (33> to <36>) include an input key circuit (42) composed of the various input switch groups (10), and a pressure switch (42) for detecting the water level in the tank.
43), a top lid safety switch (44) that operates in conjunction with the opening and closing of the top lid (13), and signals from the prewash selection switch 9), etc., and based on these information, the output boat From (37) to (39), an LED drive circuit (45) consisting of a group of LEDs, a buzzer circuit (46) for process end notification or abnormality notification, and a load drive circuit (47) consisting of a bidirectional cyrisk, etc. Control signals can be sent out to The load drive circuit (47) includes the microcomputer (
27), the upper and lower drive circuits (48) and (49), and the drain solenoid valve drive circuit (50).
) (51) to control the operation of the solenoid drive circuit (52). (53) is T! which supplies voltage to the microcomputer (27). t is a source circuit, and (54) is a reset signal generation circuit.

Thus, the washing machine sequentially executes a program consisting of washing, rinsing, and spin-drying steps under the control of the microcomputer (27). Furthermore, a short dehydration step is performed when transitioning from washing to rinsing and when repeating rinsing.

Hereinafter, the operation of the present invention will be explained according to the flowchart of Section 7.

The detergent injection operation in this embodiment can be roughly divided into the main washing only and the pre-washing (washing for a short time before the main washing).

If the user wishes to perform only main washing, the user puts a predetermined amount of detergent into the first washing section F77 (16) and starts the program. Then, the waterway (21>
Water is supplied from (22) (S-1), and the other waterway (2
The detergent in the first storage part (16) is completely washed away by the water from 2), and is completely thrown into the fc washing tank (3) from the front end side (22b).

Now, if the user wants to wash his hands before the main washing, he should put a predetermined amount of detergent into each of the first and second reservoirs (16) and (17). Reservoir (
16) There is a scale displayed on each wall of (17), so put in according to this scale. The amount of detergent is about 0.14% of the amount of water supplied for main washing, and when the amount of water supplied is 3012, about 30g is added, and for child washing, less than this, about 10g is added.

Then, when the pre-wash selection (9-inch (vJ exchange lever (12)) is set to 1 pre-wash and the program is turned to star 1-, the microcomputer (27) energizes the solenoid (24). After directing the water outlet end (22b) of the other waterway (22) toward the second storage section (17),
S-2>, water supply is started (S-3), water supply is performed through each of the waterways (21) and (22), and water from the other waterway (22) is used to fill the second storage section (17). The detergent inside is washed away and thrown into the washing tub from the front end side (22b).

When water is supplied to the set water level, water supply is stopped (S-4
), a 3-minute hand wash is performed (S-5). In this pre-wash, the rotor blades (not shown) are slowly reversed at low speed,
During this time, dirt is easily removed from the laundry due to the low concentration detergent solution and agitation force. When the pre-washing is finished, the detergent solution will be 1
The water is drained for 0 seconds (S-6), thereby discharging the gravel that fell during pre-washing.

After draining water for 10 seconds, the excitation of the solenoid (24) is cut off (S-7), so that the water outlet end (22b) of the other water channel (22) is connected to the first water outlet by the biasing force of the spring (26). It returns toward the reservoir (16).

Then, water is supplied again (S-8), and during this water supply, the other water channel (22) is connected to the first storage section 16).
Since the water channel (22) is facing the direction, the water from the other waterway (22) can be completely supplied into the first storage part (16),
The detergent inside is flushed out into the washing tub (3). In this example,
Since the water supply capacity is equal to the drainage capacity, the water supply time is set to double 20 seconds to return the water to the set water level. After the water supply is completed, main washing is performed.

During this draining and water supply between the sub-washes, the rotor blades are in a long-term rest period, and the laundry that has become tangled during hand-washing is naturally loosened, reducing tangles during the next main-wash.

As described above, if a small amount of detergent is added during pre-washing, the dirt separated from the clothes during pre-washing will be surrounded by the detergent components, and will not re-adhere to the clothes. Sometimes, a desired cleaning effect can be obtained with a small amount of detergent in a short time, and damage to the fabric can be reduced accordingly. In the figure, the solid line represents the present example, the dashed line represents the case where no detergent was used during hand washing, and the dotted line represents the case where pre-washing was not performed.

In addition, in this example, a small amount of water is drained after hand washing, so there is no risk of gravel etc. being discharged at this time and damaging the tank or clothes during the main washing, and the amount of water drained is small, so there is a water saving effect. good.

Furthermore, in this embodiment, a plurality of detergent reservoirs are provided,
Since the structure is such that water is supplied into the reservoir at the time of injection, by programming the energization timing to the solenoid (24) appropriately, for example, the finishing agent can be introduced into the second reservoir (17) and the final It is also possible to add a finishing agent during rinsing. Further, the storage portion may be provided with an appropriate membrane depending on the number of times the detergent and finishing agent are added. In this case, it is necessary to switch the water supply light according to the number of storage parts, and it is conceivable to switch the water supply light by, for example, a force l.

(G) Effects of the Invention The washing machine of the present invention can automatically add detergent and finishing agents at desired times in the program by simply switching the water supply light to each storage section as appropriate. It is extremely valuable.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the main parts of the washing machine of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a perspective view of the top cover, Fig. 4 is a perspective view of the water injection guide, and Fig. 5 is FIG. 6 is a block diagram of the control mechanism, FIG. 7 is a flowchart showing the operation, and FIG. 8 is a cleaning characteristic diagram based on experiments. (3)...Dewatering/washing tank, (16)...First storage section, (17)...Second storage section, (22)...Other water channel, (23)...Water injection Guide body, (24)... Solenoid, (26)... Spring ((22) (23)
(24) (26): Water supply switching means).

Claims (1)

[Claims] (1) A storage section for laundry treatment agents such as detergent and finishing agents is provided above the washing tub, and water is supplied into the storage section to transfer the processing agent stored in the storage section into the washing tub. A device for discharging water, and providing a plurality of storage portions,
A washing machine characterized by being provided with water supply switching means for selectively supplying water into each storage section.