JPS6111096A - 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 rotates a rotor blade provided at the bottom of a washing tub intermittently from side to side at low speed and in a short period of time.

(B) Conventional technology This type of washing machine these days has moved away from conventional washing machines that allow the rotor blades to rotate at high speed for a long time and wash at a high cleaning rate. Nowadays, clothes are being replaced by ones that can be rotated to minimize damage to clothing. The latter example is shown in, for example, Japanese Unexamined Patent Publication No. 59-17390, and will be explained based on FIGS. 5 to 8.

(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 removed (=I).A rotary blade (4) is provided at the center of the bottom of the washing tub (1). Washing tub (1
) is provided in the outer tank (5), and at the bottom of the outer tank (5),
A drive mechanism (including a drive motor (6), a clutch, a brake device, etc. that rotates the washing tub (1) and rotor 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 base (1).
0), a substantially triangular prism-shaped protrusion (11) that gradually protrudes from the periphery of the base (lO) toward the center, and a protrusion that protrudes from each triangular vertex of this protrusion toward the periphery of the base (10). It consists of a set of blades (12). Each feather (
12) is deflected in a gentle curve toward the periphery of the base (10) in the same direction (rightward in the figure) as is clear from FIG. The height H) of the protrusion (11) is approximately 1/2 of the outer diameter (d) of the circular t\-space (10), and is lower than the height h) of the water surface of the washing tub <1>. It is determined. In the example, the inner diameter (D >= 400 [mm] of the washing tub 1) is
) outer diameter (d) = 320 [mm], protrusion (11
> height t (H) = 140 [mm].

At the top of the protrusion (11), a substantially triangular prism (13) with a smaller diameter is formed at the top. This triangular prism (
The slope (θ2) of the side surface of 13) is 4 below it as shown in Figure 8.
The slope is gentler than the slope (θl) of the upper end of the side surface of the large-diameter triangular prism (the protrusion (11)). In the example, (i)=12' and (1)=8°.

Figure 14) is a boss that fits into the top of the wing shaft 5), and is inserted into a boss (16) provided on the back side of the top of the rotor. The rotor (4) is attached to the wing shaft (15) by tightening a mounting screw 17) to the top of the wing shaft (15).

The rotor blade (4) can rotate left and right alternately, but the number of rotations is between 10 [r, p, m] and 7 of the conventional rotor blade.
20[r, p, m lower than 300[r, p
, 111] are summarized below. The example is about 1
80 [r, p, m]. Then, after rotating to the right for 1 to 2 seconds, stopping for 0.5 to 1 second, and rotating to the left for 1 to 2 seconds, the reversal cycle is repeated during the set time. . Also,
During this rotation, the washing tub (1) is
Even if the water level inside becomes lower in the central part like a forest as shown by the dashed line in FIG. 6, the value is such that it will not become lower than the above-mentioned protrusion (11).

In such a washing machine, when water is supplied to the washing tub (1) and a cloth (C) is put therein, and the rotor (4) is rotated, the cloth is deposited at the lower part of the rotor (4) in the same way as the conventional rotor. A water flow is generated to rotate the cloth in the horizontal direction, and at the top of the rotary blade, the triangular prism-shaped surface of the protrusion (11) and the blades (12) apply a force to raise and lower the cloth. As a result, the cloth temporarily sinks toward the rotor along the side wall of the washing tub, as shown by the arrow in Figure 5, and then floats up along the triangular prism-shaped protrusion (11) in the horizontal direction. Rotate.

In particular, since the three blades (12) of the rotor blade are deflected in a gentle curve in the same direction (rightward) as shown in Figure 7, rotation of the rotor blade (4) occurs on the left and right sides. There is a difference in the water flow, and when rotating to the right, the water flow is stronger and causes the cloth to float 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 M(tl
) is not cylindrical but triangular prism-shaped, so this protrusion generates a water flow that tries to drive the cloth to the surrounding area, preventing the cloth from clinging to 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 (IIIJI') of the upper end of the side surface of the protrusion (11) is
Since the top substantially triangular prism (13) has a side inclination angle (θ2>), it becomes easier for the cloth to climb 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 fabric due to tangles, and the rotary blade (4)
Since the rotation speed is low, there is little damage to the fabric.

In such a conventional example, the lower part of the rotor (4) rotates the clothing horizontally, and the upper part floats and sinks up and down, moving the clothing as a whole vertically.
Since the rotation speed of the 4-wheel is very low, it is difficult to move the clothes up and down from the beginning of the set time. Therefore, the movement of the clothes appears to the user to be poor, giving the impression that the clothes cannot be washed.

(c) Problems to be Solved by the Invention The present invention activates the movement of the clothes from the beginning of the set time in the washing process, and in the rinsing process, the clothes are moved uniformly and the rinsing water is The purpose is to suppress scattering.

(2) Means for solving the problem The present invention arranges a single period in which the rotation time in one direction is long and the rotation time in the other direction is short in the reversal cycle of the washing process, and the single period of the reversal cycle in the rinse process is The rotation times are the same.

(e) Effect: In the washing process, pulsating flow occurs during the reversal cycle, which activates the movement of the clothes and increases the washing power both visually and practically. On the other hand, in the rinsing process, the left and right rotation times are made the same to eliminate the generation of vein flow and suppress the scattering of rinsing water.

(f) Example 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 process, the rotor blades are rotated in a cycle stored in the microcomputer. For details, about 18 Or, l)
, 01, and intermittently rotates left and right for a maximum of 3 seconds with an appropriate rest period in between.

In the fully automatic course, as before, water supply - washing - drainage - intermediate dehydration -> water supply - 1st rinse - drainage - intermediate dehydration - water supply - 2nd
A cycle of rinsing and draining is followed by final dehydration, during which washing is performed, and the rotor blades are intermittently reversed during each of the first and second rinsing cycles. 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. Additionally, in each washing and rinsing process, three types of water flow can be selected: ``Strong'', ``Standard'', and ``Soft'', and in the rinsing process, water rinsing can be set at any time.

Next, the three types of water flow described above will be described for washing and rinsing. In both cases, the rotor starts rotating clockwise and ends rotating counterclockwise.

First, in the case of washing, each water stream is created by repeating the inversion cycle typically shown in FIG. In the same figure, Tl
<T2<T3<T4<T5, and the rest time T (l is constant. The specific values of To and TI-T5 vary depending on each water flow, and To and T5 are appropriate values for a maximum of 3 washes. In addition, the sum of the rotation times that can be calculated in a single cycle from clockwise rotation and stop to counterclockwise rotation is constant or almost constant for each single cycle. That is, T1 + T5 - T2 + T4 in the figure.
-T3+T3・or T1+T5kiT2+T4bloodT3
+T3... Incidentally, the times when the inventor conducted the experiment are as follows. In the case of ゛°strong゛′ water flow, T1=
0.7 seconds, T2 = 08 seconds, T3 = 1.0 seconds, T4 = 1.
2 seconds, T5 = 1.3 seconds, To = 0.2 seconds ℃, in the case of standard water flow, T1 = 0.7 seconds, T2 = 0.8 seconds, T
3=0.9 seconds, T4. = 1.1 seconds, T5 = 1.2 seconds, T
o=0.5 seconds.

If the water flow is 1-1 when washing, the body + 1.0 seconds
Holding the L time (To), 0.4 seconds on the right - 0.6 seconds on the left - 04 seconds on the right - 0.6 seconds on the left - 05 seconds on the right - 0.5 seconds on the left → 0.6 on the right
Seconds - Left 04 seconds → Right 0.6 seconds → Left 04 seconds → Right 06 seconds → Left o
A cycle of 4 seconds → 0.5 seconds on the right → 0.5 seconds on the left - 04 seconds on the right - 0.6 seconds on the left is repeated. In this case as well, the sum of the left and right rotation times during the four cycles remains constant.

The reversal cycle of the first embodiment consists of two consecutive first single periods in which the clockwise rotation time is short and the counterclockwise rotation time is long, and then the clockwise rotation time The second single cycle, in which the rotation time is long and the counterclockwise rotation time is short, is repeated three times in succession, and the first single cycle is executed once again through the same single cycle.

That is, the clockwise rotation time increases from T1 to T5, and the counterclockwise rotation time synchronizes with it and decreases from T5 to T1, and each single period is aligned in the increasing direction and decreasing direction. Also, a pause (To) is placed after the shortest Tl of a clockwise rotation, the longest T5 of a left rotation is located, and a pause (To) is placed before the shortest T1 of a left rotation.
T5, which is the longest clockwise rotation, is located after , and has the largest difference in left and right rotational force.

The second section shows a second embodiment of the reversal cycle. Here, a single cycle of clockwise rotation for 1.5 seconds, pause for 0.5 seconds, counterclockwise rotation for 0.5 seconds is repeated four times in a row with a pause of 0.5 seconds,
After a 5-second pause, turn right for 0.5 seconds and pause for 0.5 seconds.
A single period of 15 seconds of counterclockwise rotation continues with a pause of 0.5 seconds. That is, in the figure, TI=1.5 seconds, T
2=0.5 seconds, To=0.5 seconds.

A third embodiment of the reversal cycle is shown in FIG. Here, we will use a single cycle of clockwise rotation for 15 seconds, pause for 0.5 seconds, counterclockwise rotation for 05 seconds, clockwise rotation for 05 seconds, pause for 0.5 seconds, and counterclockwise rotation for 1 period.
．． A single period of 5 seconds is arranged in sequence with a pause of 0.5 seconds in between. That is, in the figure, T1=1.5 seconds, T2=0.5 seconds, and To=0.5 seconds.

FIG. 4 shows a fourth embodiment of the reversal cycle. Here, the clockwise rotation is 1.2 seconds, the rest is 10 seconds, the left rotation is 1.2 seconds, and then the clockwise rotation is 1.9 seconds.
A single cycle of 05 seconds of rest and 0.5 seconds of counterclockwise rotation means 0.5 seconds of rest.
There is a single cycle of 0.5 seconds of clockwise rotation, 0.5 seconds of pause, and 1.9 seconds of left rotation after 05 seconds of pause.
．． Two consecutive inversion cycles are performed with 5 seconds between them, and then the conventional inversion cycle is continued again. That is, in the figure, T1=1.2 seconds, T2=1.9 seconds, T3=0.5 seconds, and To=0.5 seconds. In this embodiment, two types of single periods including 1 and 9 seconds are shown twice, but they may be repeated once each.

In this way, the reversal cycles of the first to fourth embodiments are a plurality of single periods in which the rotation time in one direction is long and the rotation time in the other direction is short. Therefore, the right or left rotation of the reversed water flow is strengthened to generate a pulsating flow, which invigorates the movement of the clothes, especially the vertical movement, thereby increasing the washing efficiency of the clothes both visually and practically.

Furthermore, since the rotation time of a single cycle varies in length, it is possible to promote the generation of the above-mentioned pulsating flow, invigorate the movement, and improve the cleaning efficiency.

Furthermore, in the first and third embodiments, the rotation time in one direction gradually increases while the rotation time in the other direction gradually decreases, so strong rotation in one direction occurs and the flow resembles a swirling water flow. The water flow is generated and the product is rotated at low speed for a short period of time to avoid tangles, making it possible to wash with less damage and more effective washing.

Furthermore, since the longest rotation time is located before and after the shortest rotation time, the difference in rotational force is greatest at that time, and the clothes can be moved violently like a whirlpool type washing machine.

In addition, since the sum of the left and right rotation times of each single cycle is made almost constant, it is less likely that pulsating currents occur only in one direction of rotation, and even though the cleaning power is improved, The occurrence of uneven washing and tangles is suppressed.

In this way, when washing, a water flow similar to a pulsating flow or a whirlpool is used to perform washing that is less likely to get entangled or damaged, has less unevenness, and has enhanced washing power.

When rinsing is performed with the same water flow as washing, a large amount of water is injected, and water may be constantly injected as in rinsing, so water tends to splash around, wetting the surroundings, and water is also wasted. Therefore, in this embodiment, during rinsing, the left and right rotation times are the same; for example, the "strong" and "standard" water flows have a reversal cycle of 1.2 seconds of rotation and 10 seconds of rest, and the "soft water flow has a 0.5 second rotation cycle." - A reversal cycle with a pause of 1 or 2 seconds is used.The rotation speed of the rotor blade in this reversal cycle is similarly low (approximately 18 Or, p, m).As a result, washing is performed with good cleaning power. The rinsing process is carried out while preventing waste of water due to splashing and wetting the surrounding area.To summarize the above effects of the invention, according to the present invention, in the washing process, intermittent reversal is performed at low speed for short periods of time. Inside, it creates a pulsating flow to activate the movement of clothes, adding to the conventional washing with less tangles and damage, and a washing with enhanced cleaning power both visually and practically.On the other hand, the rinsing process is evenly washed. The intermittent reversal eliminates pulsating flow and suppresses water scattering.Therefore, a high-performance and practical washing machine can be provided.

[Brief explanation of drawings]

Figures 1 to 4 are time charts of reversing cycles of the first to fourth embodiments of the washing machine according to the present invention, Figure 5 is a vertical cross-sectional view of the entire conventional example, and Section 6 is an enlarged view of the main parts. longitudinal section,
7 is a plan view of the rotary blade, and FIG. 8 is a sectional view taken along line A-0-B in FIG. 7. (1)... Dehydration/washing tub, (4) Rotary blade.

Claims (1)

[Claims] (1) In a washing machine that rotates the rotor blades installed at the bottom of the washing tub intermittently from side to side at low speed and in a short period of time, the rotation time in one direction is long and the rotation time in the other direction is short. 1. A washing machine comprising: a reversal cycle for a washing process having a cycle; and a reversal cycle for a rinse process having a set of C single cycles having the same rotation time.