JPH0790071B2 - How to drive a washing machine - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method of operating a washing machine having a short timed reversal of the impeller.

2. Description of the Related Art Generally, as shown in FIG. 2, the structure of a washing machine is such that a rotary wing (hereinafter referred to as a pulsator) is rotatably provided at the center of the bottom of a washing tub. The pulsator is attached to a washing shaft which is an output shaft of a rotation reduction mechanism attached to the back surface of the bottom of the washing tub. Further, an impeller pulley is mounted on the input side of the rotation reduction mechanism, and a motor (not shown) is provided via a V-belt.
The rotation from is transmitted. On the other hand, a recess is formed in the bottom of the washing tub to store the pulsator, and a pulsator storage portion is provided. The size of the pulsator housing is approximately the same as the diameter of the pulsator. In addition, the ratio of the diameter X of the pulsator and the diameter Y of the washing tub (X /
Y) was generally set to 0.3 to 0.7 as shown in FIG. However, due to recent improvements in water flow, etc., this ratio tends to increase as shown in FIG. That is, the diameter of the pulsator is increasing.

Problems to be Solved by the Invention As described above, by increasing the diameter X of the pulsator with respect to the dimension Y of the washing tub, the operation time of the pulsator is made small, and the cleaning performance is not deteriorated. It has become possible to wash softly with less entanglement. On the other hand, since the driving time is small, the movement of the cloth is bad, and there is no feeling that the cloth is spinning around. This is especially noticeable when washing large and bulky items. To solve this, move the pulsator several times with a pause in the same direction as shown in FIG. 5, then move the pulsator several times in the same direction in the opposite direction, and then make 1 forward / reverse rotation. A water flow with an operation time limit of turning in was considered. By repeating the rotation in the same direction in this way, the rotational inertia of the cloth can be effectively used, and the cloth turns around in the washing tub, but when the amount of cloth is small, the sixth As shown in the figure, the water surface becomes a mortar like the cloth goes around too much, the water surface rises along the side wall of the washing tub, and it gets over the top of the washing tub and the water splashes out of the inside of the washing tub. The floor was wet. This tendency was remarkable as the larger the pulsator, the higher the contact rate with the cloth. As a countermeasure against this, as shown in FIGS. 7 and 8, a preventive cover is provided on the upper part of the washing tub to prevent water from splashing.

The present invention solves such a problem, and an object of the present invention is to realize a method of operating a washing machine in which water can be prevented from scattering without using a preventive cover even when the capacity is small and the cloth itself moves well. And

Means for Solving the Problems In order to achieve the above object, the present invention provides a washing tub bottom part,
It has a rotating blade whose diameter is the shortest distance of the opening diameter of the washing tub, and the rotating blade is operated in the forward direction for t1 hours, and is operated for t2 hours in the same direction with a pause, and then in the reverse direction. One cycle consists of driving for t1 hours and then driving for t2 hours in the same direction with a pause. The cycle is repeated, and t1 hours> t2 hours are set.

Action According to the above operating method, since the ON time of the pulsator is gradually shortened, it is possible to effectively use the inertia of the cloth at the previous ON time, prevent excessive cloth rotation, and prevent water splashing. it can.

Example An example of the present invention will be described below with reference to FIG. In Fig. 1, drive for 1.2 seconds to the right, drive for 0.8 seconds in the same direction after resting for 0.6 seconds, then rest for 0.6 seconds, then drive for 1.2 seconds to the left, rest for 0.6 seconds, drive for 0.8 seconds in the same direction. , Pause 0.6
It is a water stream that repeats 1.6 seconds to the right after 0.8 seconds, pause 0.8 seconds, left 1.6 seconds, pause 0.8 seconds as one cycle. When the same rotation continues as described above, the next ON time is shorter than the first ON time.

By setting the above cycle, the first ON time is long and the cloth that is stopped is moved, the cloth starts to move, and the ON time in a short time is added in the same direction by interposing a pause. I put it in so that the cloth will rotate. In other words, by using the inertial force of the cloth at the first time, and by giving a rotational force in the same direction, more movement is given to the cloth.

Also, for the water splash, by setting the ON time period shorter than the first time, the inertia force at the first time is subtracted, and the same rotational force as the first time can be applied to the cloth. Therefore, when moving a small amount of cloth, as in the past,
If the ON time of the first time is the same as the ON time of the next time, the rotational force of the next time will be increased by the amount of the inertia force of the first time, and the cloth was spinning around and water was splashing more than the first time, but the ON time of the next time is shortened. By doing so, the cloth does not rotate more than the first time, and it is possible to prevent water from splashing.

EFFECTS OF THE INVENTION According to the present invention as is clear from the above examples, by making the next ON time shorter than the first ON time at the same rotation, the same degree of rotation as the first rotation can be obtained at the next ON time. It is possible to prevent the fabric from going around too much and prevent water from splashing. Further, since the cloth does not rotate too much, the damage of the cloth is small and the kink of the cloth is small, and the effect is great.

It should be noted that even when the vehicle is operated twice or more with a pause in the same direction, it is clear that reducing the operating time sequentially from the initial operating time is effective against scattering.

[Brief description of drawings]

FIG. 1 is a diagram showing a cycle of an operating method in an embodiment of the present invention, FIG. 2 is a configuration diagram of a washing machine, and FIGS. 3 and 4 are sectional views showing a comparison between a pulsator diameter and a washing tub diameter. ,
FIG. 5 is a view showing a cycle of a conventional example, FIG. 6 is a view showing water splashing, FIG. 7 is a perspective view of a preventive cover, and FIG. 8 is a view showing an action of the preventive cover. 1 ... Washing tub, 2 ... Pulsator.

Claims (1)

[Claims] 1. A washing tub having a rotary blade at the bottom of the washing tub whose diameter is the shortest distance of the opening diameter of the washing tub, the rotary blade being operated in the normal direction for t1 hours, with a pause, in the same direction. One cycle for t2 hours, then t1 hours in the reverse direction, and t2 hours in the same direction with a pause, so that the cycle is repeated and t1 hours> t2 hours. How to operate the washing machine set to.