JPS5991995A - Washer - 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) Industrial Application Field The present invention is a method of washing using a pulsator provided with twisted blades.

(b) Prior art In a fully automatic washing machine, a large-diameter pulsator is formed in the shape of a chevron, and blades are formed on the upper surface of the pulsator at intervals of, for example, 120 degrees, and the blades are aligned at one side in the circumferential direction. There is something twisted like that.

Then, this pulsator is rotated left and right by a motor controlled by a timer or the like, for example, for 0.5 seconds each, with a rest period of about 0.5 seconds. In this conventional example, a rotating water flow is produced as a whole, but when the wing pieces are rotated in the torsional direction, there is a force that draws water and cleaning materials inward, especially at the beginning of the rotation, creating a so-called vertical water flow. Thermal theory: The rotating water flow is weak by this amount. This vertical suiryusha laundry is pushed up and turned upside down, which loosens the laundry and suppresses cloth tangles.
This will suppress uneven washing during the entire washing process.

On the other hand, when rotating in the opposite direction, there is a force that pushes water and laundry outward, creating a so-called water test flow. Therefore, since the horizontal water flow is a strong rotating water flow similar to the conventional one, it combines with the vertical water flow to produce a predetermined washing effect.

However, since this conventional example performs a left-right rotation with a very short lF*rWI, a vertical water flow is generated exclusively during rotation in the twisting direction, and there is little generation of a rotating water flow that directly improves the washing effect. However, due to the twisting of the blades, there is less resistance during rotation, which is advantageous in terms of motor power consumption. On the other hand, when rotating in the opposite direction, there is much resistance during rotation, so a strong rotating water flow is generated, but the power consumption is inferior.

(c) Purpose of the Invention It is to improve the washing effect (especially the cleaning rate) by effectively utilizing the rotation in the unfired tqh twisting direction, and to reduce the motor cleansing power during bath washing.

B) Structure of the Invention The present invention makes the rotation time (11) in the torsional direction longer than the rotation time in the opposite direction +12), and generates a rotational water flow following the initial vertical water flow during rotation in the torsional direction. , which loosens cleaning additives and increases cleaning efficiency. Therefore, when trying to obtain a predetermined cleaning rate, the rotation time in the twisting direction (il
) makes a large contribution, so the overall motor power consumption can be reduced. Furthermore, the water flow generated during left and right rotation is
Since we have provided a pause time (, tpl) (j-Pt) for the motor to calm down, there is no need to create a water flow against the remaining water flow due to inertia during the next rotation, and we can further reduce the motor power consumption. be able to.

(E) Embodiment Figure 1 (A) and (B) show a large-diameter disk-shaped pulsator fl installed at the inner bottom of a rectangular washing tub in a two-tub washing machine.
) is shown. This pulsator +1+ is located at the center of the upper surface (
2) protrudes upward (below the washing water level), and the wing pieces (3
)... are formed protrudingly at 120 degree intervals. and,
The wing pieces (3)... are twisted in the clockwise rotation direction.

This pulsator +11 is operated by a motor (not shown).
It is driven by 8Or,p,m,~200r,p,m, but by controlling the time of the motor with a timer etc.
Rotation left and right and pauses are repeated during the washing time according to the time chart shown in FIG. That is, the clockwise rotation time (il) is 1.
5 seconds, rest time (difference pl) is 1.1 seconds, left rotation time (1
2) is 1.85 seconds, the pause time (jp2) is 1.0 seconds, and the cycle of clockwise rotation and stop, and counterclockwise rotation and stop is repeated during the washing time (T).

During this cycle, clockwise rotation initially generates a vertical water flow that pushes the water and laundry upwards, flipping the laundry upside down and turning it into waste. In the latter stage, a clockwise rotating water stream is created and the laundry is washed with this water stream. Rotating to the left generates a water flow that pushes water and laundry outwards while washing. During this left-right rotation, the laundry is exposed to the water stream and at the same time is rubbed by the inner surface of the tub and the upper surface (wings) of the pulsator, thereby being washed.

The rotation of the washing liquid and water during this rotation appears to be the same on both the left and right sides in the latter stage, giving the user a sense of security that the operation is normal.

After the end of each reversal opening (zl) (f2), the pause time (1'
pt) (ip 2), and the water flow in the tank is almost full during this pause time.

Examining the power of the motor 11 for each left and right rotation, it turns out that in clockwise rotation, the surface of the I-tl piece (3) that scrapes water is small and there is little resistance, so it is relatively low, for example, 270W. Conversely, when turning to the left, the surface that scrapes the water is large and there is a lot of resistance, so for example 2
It uses a relatively large amount of power at 80W. Therefore, if the left and right rotation times are 1:1, the right rotation time (11) is (J
In this embodiment, which is longer than 2), the Tanabata power consumption during the set bathing time can be reduced.

Here, the conventional example (dotted line in the figure) and the present embodiment (solid line in the figure) are compared in terms of cleaning rate, cloth damage rate, and cloth tangling rate using FIGS. 8(a), (b), and (c). In addition, the time on the horizontal axis (i
) is the time required to execute one cycle consisting of left and right rotation and its rest. As is clear from the drawings, in this embodiment, the bath ratio (washing water amount (1)/rated laundry load (K/)
) is large, and is superior to the conventional example in all respects.

Left/right inversion time (it) + 1g) and its pause time (ipx
)(ip2) is 1.8 seconds for (11) and 1 for (e2), respectively.
°0 seconds, Ltpt) to C), 9 seconds, (ip2) to 0.8
You can change it to seconds. When changing the rotation time and rest time, the total rotation time (i
It is sufficient to keep the ratio of the total stopping time (ip), which is (ipl)+(ip2), approximately constant. That is, the equation (χoN)/(-jp)=constant is satisfied. This will be explained below based on experimental results.

A time setting method that reduces (ioN)/(4p), that is, increases the rate of increase/decrease in the overall stop time ((ioN)
/(ip), that is, the time setting method ([I) that increases the rate of increase/decrease in the total rotation time, and the above-mentioned (χON)
Consider a time setting method (Ill) in which /(difference p) is kept constant. By setting the time of the conventional pulsator without twisting using this method, it is possible to simultaneously satisfy all of the cleaning rate, fabric damage rate, and fabric tangling rate, as shown in Figure 4 (a), (b), and (c). could not.

On the other hand, when a pulsator with twisted blades was simultaneously set using this method, the results shown in FIGS. 5(a), (b), and (c) were obtained. Method (1) has an extremely low cleaning rate and is not practical. The fabric damage rate and fabric binding rate are relatively lower and better than the conventional example without twisting. And (AON)/( than method (0)
It has been found that method (III), in which χp)=constant, is superior.

(f) Effects of the Invention The present invention can provide an extremely practical washing machine that has excellent cleaning efficiency, cloth tangle rate, and cloth damage rate, and consumes little power.

[Brief explanation of the drawing]

Figures 1 (A) and (B) are a perspective view and a plan view of the pulsator of a washing machine according to the present invention, Figure 2 is a time chart of horizontal reversal time and pause time, and Figures vJ3 (A), (B), and (C) are Characteristic diagram comparing cleaning rate, fabric damage rate, and fabric tangling rate with conventional examples,
Figure 4 (Ibaro) (c) shows the cleaning rate, cloth damage rate, and cloth entanglement rate in the conventional example using the time setting method <1) ([1 (II
The characteristic diagrams shown in FIG. 5 (Ibaro) and (c) for each I) are similar to FIG. 4 in the present invention. flll...pulsator, (3)...wing piece% (11)
...Clockwise rotation time, (12)...Counterclockwise rotation time, (4p
t) (ip2)... Each pause time, (, toN)...
Total rotation time, (4p)...All rotation time. Mouth 0 - Eyes H? Threat 6.8% 8

Claims (1)

[Claims] (1) A motor-driven pulsator is disposed at the inner bottom of the washing tub, and this pulsator is provided with blades twisted in the circumferential direction, and the pulsator is rotated from side to side during downtime. Set the rotation time (ft) in the twisting direction and the rotation time (12) in the opposite direction to (it) > (χ2), and set the pause time (χP1) (χP2) to the time when the generated water flow almost subsides. and each of the above times Ltt)(χP
1) Washing W1 machine characterized by turning (χ2) (χP2) back during washing.