JPS6162496A - Washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a washing machine that allows rotary blades provided at the bottom of a washing tub to rotate left and right in a predetermined order in a short period of time.

(B) Conventional technology This type of washing tub these days has moved away from the conventional washing machine that allows the rotor to rotate at high speed for a long time and washes at a high cleaning rate. They are now being replaced by devices that can be rotated to minimize damage to clothing. The latter example is shown in Japanese Unexamined Patent Publication No. 59-17390, and will be explained based on FIGS. 2 to 5.

(1) is a washing tub that also serves as a dehydration tank, and has a large number of dehydration holes (2) on its peripheral wall, and a balance ring (3) on its rim.
) is installed. A rotation x (4) is disposed at the center of the bottom of the washing tub (1). The washing tub (1) is provided inside the outer tub (5), and at the bottom of the outer tub 5 is a drive motor (6) that rotates the washing tub (1) and the rotary blades (4).
7)
is attached, and the outer tank 5) is suspended from the upper part of the machine frame (8) by a plurality of hanging rods (9) in a vibration-proof manner.

The rotary blade (4) has a large diameter circular hemisphere (1
0>, a substantially triangular prism-shaped protrusion (11) that gradually protrudes from the periphery of the base (10) toward the center, and a substantially triangular prism-shaped protrusion (11) that protrudes toward the periphery of the base (10) from each vertex of the triangle of this protrusion. It consists of a blade (12) provided. Each feather (
12) is deflected in a gentle curve toward the periphery of the base (10) in the same direction (rightward in the figure). Height of the above protrusion (11) H)
is determined to be about 172 times the outer diameter (d) of the circular base (10) and lower than the water surface height (h) of the washing tub (1). In the example, the circular base (
10) Outer diameter (d) - 320 [picture, height (H) of protrusion (11) = 140 [nu].

At the top of the protrusion (11), a substantially triangular prism (13) with a diameter of one stage and a tapered top part (13) is formed. As shown in FIG. 5, the slope (02) of the side surface of this triangular prism (3) is gentler than the slope (θ1) of the upper end of the side surface of the larger diameter triangular prism (the protrusion (11)) below it. In the example, the angles are (θ2)-12° and (θ1)-8°.

In the figure, (14) is a boss that fits with the top of the wing shaft (15).
The 0 rotor blade (4) inserted into the boss (16) provided on the back side of the top of the rotor blade has a mounting screw (
17) can be attached to the wing shaft by attaching 1frJ.

The above rotation jK(4) can be rotated alternately left and right, but the number of rotations is 450[r, p, I11] of the conventional rotor blade.
]~720[r, p, lower than ml 300[r
, p, m or less. In the example, the volume is set at about 180 [r, p, ml.

Then, after rotating to the right for 1 second to 2 seconds, pausing for 0.5 seconds to 1 second, and rotating to the left for 1 second to 2 seconds, the reversal cycle is repeated during the set time. ing. Furthermore, even if the water level in the washing tub 1) becomes lower in the center part due to the rotation of the rotor blade (4) as shown by the dashed line in Fig. 3, the projection part (11) It is a value that does not become low.

In such a washing machine, when water is supplied to the washing tub (1) and cloth (C) is put in, and the rotor blade (4>) is rotated, the cloth (C) is rotated at the bottom of the rotary blade (4>) in the same way as the rotary blade used conventionally. A water flow is generated to rotate the cloth in the horizontal direction, and at the top of the rotor blade, the triangular prism-shaped surface of the protrusion (11) and the blades (12) apply a force that causes the cloth to rise and fall.As a result, the cloth moves in the direction of the arrow in Figure 2. As shown in the figure, the washing machine sinks once toward the rotary blade along the side wall of the washing machine, and then rotates in the horizontal direction while being encouraged to float up along the triangular prism-shaped protrusion (11).

In particular, the three blades (12) of the rotor are deflected in a gentle curve in the same direction (to the right) as shown in Figure 4, so the rotation of the rotor (4) causes the water flow to the left and right. There is a difference between the rotation and clockwise rotation, which creates a stronger water flow that lifts the cloth upwards. This is because turning to the right applies a stronger force to the water, which causes the water to hit the wall of the washing tub more strongly and the reaction creates a flow of water that floats up. This results in vertical movement of the cloth.

Since the protrusion (11) is placed below the water surface, the cloth that has floated up can easily climb over the protrusion (11), resulting in a large movement. At this time, the protrusion (11
) is not cylindrical but triangular prism-shaped, so this protrusion can generate and transfer a water flow that tries to drive the cloth to the surrounding area, preventing the cloth from getting tangled in the protrusion.

Particularly in this case, since the top of the protrusion (11) is formed with a substantially triangular prism (13) having a smaller diameter by one step, the upper end of the protrusion (11) with a large diameter and the top with a small diameter are substantially triangular. The triangular prism (13) generates turbulent flow in this area, and the cloth becomes more entangled in this area, and the inclination angle (θ1) of the upper end of the side surface of the protruding part (11) < the top of the approximately triangular prism. Since the side inclination angle (θ2) is (13),
It becomes easier for the cloth to get over the rotor blade (4).

In this way, in the conventional example, clothes are less likely to get tangled during washing, so there is less damage to the cloth due to tangles, and the rotary blade (4
) Since the rotation speed is low, there is little damage to the fabric.

In this conventional example, when washing clothes that are easily damaged, the total rotation time of each item is shortened. but,
In this case, the rotation speed of rotation g (4) is very low, so the movement of the clothes is noticeably reduced, and the clothes appear to be floating on the water, making it difficult to see whether they are being washed even though it is a soft wash. There were some things that were unclear, which caused users to feel uneasy.

(c) Problems to be Solved by the Invention The present invention clarifies the changes in the strength of the water flow that occur even when soft washing is performed by shortening the rotation time, and the movement of the clothes is controlled accordingly. It is designed so that it can be made into 6 shots.

2) Means for solving the problem The feature of the present invention is the reversal cycle of the rotor blade, which allows the rotation time of the left and right sides to be changed stepwise to become longer or shorter at the same time, and ends at the longest or shortest time. It is.

(e) Effect: By changing the left and right rotation time in stages, the water flow is made to pulsate, thereby increasing the movement of the clothing. Since the time difference between the left and right rotations is small, the magnitude of the pulsation is suppressed to some extent, and sudden movements do not occur at each rotation change. In addition, since the largest time difference occurs when moving to the next reversal cycle, the clothes move extremely significantly at this point, and changes in the strength of the water flow become clear at this point, so you can distinguish between strong, medium, and weak for soft washing. I can do it,
This allows the degree of washing to be adjusted.

Embodiment The basic shape of the washing machine according to the present invention is the same as that of the conventional example shown in FIGS. In the rinsing and rinsing steps, the rotor blades are rotated in a reversal cycle stored in the microfum computer. For details, about 18 Or,
At rotation speeds p and m, the rotation time is intermittently rotated left and right for a maximum of 3 seconds, and for a rotation time of 0.3 seconds for i and short, with an appropriate rest time of 0.5 seconds or less.

In the fully automatic course, as before, water supply - washing - drainage - intermediate dehydration - water supply - 1st rinse - drainage - intermediate dehydration - water supply -> 2nd
A process of rinsing, draining, and final dehydration is performed, and the rotary blades are intermittently reversed during each of the first and second rinsing processes. The times required for the washing process, first rinsing process, second rinsing process, and intermediate and final dehydration processes can be freely set in advance.

Figure 1 (A) shows the reversal cycle (1 cycle) of the rotor blade (4) in the washing process and each rinse process, and Figure 1 (B) shows the changes in the intensity of the water flow formed thereby. In the reversal cycle, the left and right rotation times are arranged with a constant pause time of 0.2 seconds, and from the left rotation side 1.2 seconds on the left → 1.2 seconds on the right → 1.0 seconds on the left → Right 1.0 seconds → Left 0
．． 8 seconds on the pass 0.8 seconds on the right, 0.6 seconds on the left - 0.6 seconds on the right - 0 on the left.
Changes from 4 seconds to 0.4 seconds on the right.

Note that each rotation time here is the total time if the rotation time is subdivided. When this reversal cycle is repeated for a set time, the generated water flow is strong at first, but gradually weakens, and then becomes weak after passing through an intermediate water flow. In other words, the water flow changes from strong to medium to weak, and the pulsation that accompanies this change makes the movement of the clothing appear thicker. Since there is only a short time difference at the turning point between left and right rotations, the magnitude of the pulsation can be suppressed to some extent. However, in the first half of the cycle, a water flow acts in the opposite direction to the water flow due to inertia during rest, so this reaction also increases the movement of the clothing.

Then, when moving to the next reversal cycle, the shortest time changes to the longest time, so the largest time difference occurs, and at this point, the strength of the water flow clearly changes, and the clothes also move violently. This action occurs at each transition in the reversal cycle and indicates the water flow intensity selected by the user and informs the user of the selection. Moreover, the user can recognize the washing effect by the dog-like movement of the clothes.

The average value of each rotation time in this embodiment is 0.8 seconds, and if each rotation time in the conventional soft washing is 0.8 seconds, the total rotation time is the same. Therefore, although the cleaning power determined by the sum of the rotation times is about the same, the movement of the clothes is greater in this embodiment.

Incidentally, each rotation time and rest time in this embodiment are changed within the above-mentioned range, and the intensity of the entire water flow can be selected depending on the degree of change. Furthermore, the reversal cycle may be configured such that the rotation time changes from the shortest to the longest, and the starting rotation direction may be clockwise rotation.

(G) Effects of the Invention According to the present invention, by synchronously changing the left and right rotation time to lengthen or shorten, the strength of the water flow is created, the movement of the clothing is increased, and each time the reversal cycle is renewed, It causes large movements and changes in water flow. Therefore, it is possible to eliminate concerns about the washing effect, and it is also possible to easily select the water flow strength, thereby providing an extremely practical washing machine.

[Brief explanation of the drawing]

Figure 1 (a) is a time chart of the reversing cycle of the washing machine according to the present invention, Figure 1 (b) is a diagram of water flow intensity changes, and Figure 2
The figures are overall vertical cross-sectional views of the present invention and the conventional example, FIG. 3 is an enlarged vertical cross-sectional view of the main parts, and FIG. 4 is a plan view of the rotor blade.
FIG. 5 is a sectional view based on the line A-0-B of the fourth section. (1)...Dehydration and washing) 1, (4)...Rotary blade.

Claims (1)

[Claims] (1) In a washing machine in which rotary blades provided at the bottom of the washing tub are rotated left and right in a predetermined order for short periods of time, the rotation time of each of the left and right rotary blades is gradually lengthened or shortened. and a washing machine characterized by having a reversal cycle which ends when the rotation time is either the longest or the shortest.