JPH02126890A - washing machine - Google Patents

Abstract

PURPOSE:To reduce the cloth entanglement while keeping washing characteristics and enable the visual confirmation of the cloth turning by repeating weak stream and strong stream plural times in the first half of a washing step, and adapting a constant middle stream in the latter half of the washing step. CONSTITUTION:The strength of the stream in a washing tank 12 can be changed by the reversing time limit of a stirring blade 13 to form various streams, and the streams suitable to various washing cloth amounts are divided into multi-stages by a control device so as to be capable of selection. When the washing is conducted at a weak stream through the washing step, the washing characteristic is such that the lower half cloths in the washing tank 12 is washed, but the upper half cloths can not be washed. Thus, by adapting a complex stream in which the reversing time limit of strong stream is periodically added to the stream based on weak stream for a short time, the cloths in the washing tank 12 are put upside down, and the upper half cloths in the washing tank 12 are first moved to the lower part and then washed at the following weak stream. When the washing step is halved to conduct the first half at the complex stream and the latter half at a constant stream, the movement of the cloths are improved, and the visual confirmation is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a washing machine in which the water flow in the anti-layer stroke is a composite water flow consisting of a plurality of water flows. )Prior Art As shown in FIG. 8, a conventional washing machine has a structure in which a washing tub 4 having a stirring blade 3 at the inner bottom is rotatably provided in a water receiving tank 2 provided in a main body 1. .

The rotational force of a motor 6 is applied to a speed reduction mechanism 5 that selectively switches and rotationally drives the washing tub 4 and the stirring blades 3. The configuration is such that the information is transmitted via the F-IJ-9.

During the washing process, the deceleration mechanism section 6 transmits the drive to the stirring blade 3 side to form a water flow in the washing tub 4. The strength of this water flow can be changed depending on the reversal time of the stirring blade 3, and the water flow suitable for washing various clothes can be selected in multiple stages. The time limit is, for example, 2 seconds of operation and 1 second of rest, and the stirring blade 3 is reversed from side to side during this reversal time period, and the entire washing process is carried out at a constant water flow of the set strength. In addition, when the weight of the clothes to be washed is light, the reversal time of the water flow of appropriate strength is set to, for example, 1 second operation and 2 second rest, and the entire washing process is performed during this reversal time.

When setting the strength of water flow (reversal time) suitable for each type of laundry mentioned above, basically divide the laundry into several weight levels,
A set amount of laundry is loaded into each machine, and the reversal time for each water flow is set to achieve the desired cleaning effect.

Problems to be Solved by the Invention The water flow of conventional washing machines divides the weight of the clothes to be washed into multiple stages, and the reversal time is set so that the target cleaning effect is achieved at the set amount. This poses no problem, but on the other hand, it has the problem of increasing the amount of cloth that is characteristic of stirring blades.

Figure 9 shows the change in performance when washing is performed with a reversing time for the rated amount and a shorter reversing time. In the same figure, the cleaning effect, uneven cleaning, and cloth tangles when washing with the standard water flow (for rated amount) and the reversal time are 1o.

It can be seen that as the reversal time period becomes shorter, the amount of cloth tangles decreases, but the unevenness of cleaning increases. Incidentally, not only the standard water flow but also water flow suitable for other weights show the same tendency as the washing characteristics shown in FIG. 9. The reason for the change in washing characteristics due to the decrease in the reversal time is that the strength of the water flow is set by controlling the reversal time of the stirring blade. This is because in order to transmit the agitation force to the clothes at the top of the washing tub, the agitation blades must either rotate more often or increase the rotational torque.
In order to wash the clothes in the upper part, it is necessary to lengthen the reversal time of the stirring blades, which causes the clothes in the lower part of the washing tub to become more tangled. As is clear from the above explanation, in conventional washing machine water flow control, the reversal time of the stirring blade is set constant for each water flow strength that matches the amount of cloth, so it is difficult to obtain washing characteristics. In this case, there was a problem in that cloth entanglement increased.

In view of the above-mentioned problems, the first object of the present invention is to reduce cloth tangling while maintaining washing characteristics. The second purpose is to prevent fabric tangling while allowing visual confirmation of the area around the fabric.

Means for Solving the Problems In order to achieve the above-mentioned first object, the present invention provides a stirring blade rotatably disposed in a washing tub, a motor and a speed reduction mechanism for driving the stirring blade, and a speed reduction mechanism for driving the stirring blade. The control device controls the strength of the water flow formed by the rotation of the stirring blade by the reversal time of the stirring blade, and generates a plurality of water flows such as a strong water flow and a weak water flow. It is based on the structure and generates a composite water flow with multiple short-duration strong water flows.

In addition, in order to achieve the second objective, the washing process is divided into two parts, in which a composite water flow is generated in the first half, and a constant water flow of a medium water flow is generated in the second half.

Operation With the above configuration, the clothes in the lower half of the washing tub are washed in a weak water flow, and the individual clothes are hardened. Furthermore, a short period of strong water flow is used to exchange the clothes on the top and bottom of the washing tub, and the next weak water flow is used to wash the clothes that are in the bottom half of the washing tub (the clothes that were in the top half of the washing tub at the beginning of washing) and to wash them individually. solidify clothing. Here, unlike conventional water currents, weak water currents do not have enough moving force to cause entanglement with adjacent clothing, so each clothing item clumps together, resulting in less fabric tangles. Since the above-mentioned weak water flow and strong water flow are repeated multiple times during the washing process, washing characteristics (washing rate and uneven washing) are improved and fabric tangling can be reduced.

In addition, in the first half of the washing process, the above-mentioned weak water flow and strong water flow are repeated multiple times to improve the washing characteristics and suppress fabric tangles, and in the second half of the washing process, a constant medium water flow is used to improve the fabric's rotation and visually confirm this. To make it easy for a user to confirm that washing is in progress.

EXAMPLE A first example of the present invention will be described below with reference to FIGS. 1 to 4. In the figure, a water receiving tank 1 provided in the main body 10
1, a washing tub 12 is rotatably provided, and the washing tub 12
A stirring blade 13 is rotatably disposed at the inner bottom of the stirrer. The rotational force of a motor 15 is applied to a motor pulley 16. V-belt 17. The configuration is such that the signal is transmitted via the pulley 18 and the motor 16 is controlled by the control device 19.

During the washing process, the deceleration mechanism section 14
The driving force is transmitted to the side to form a water flow in the washing tub 12. The strength of this water flow can be varied by changing the reversal time of the stirring blade 13, and the control device 19 divides the water flow into multiple stages suitable for various amounts of laundry to make it possible to select.

With the above configuration, the reversal time of the weak water flow that is the basic water flow for the rated capacity [60 to 70% of the reversal time that is the standard water flow of conventional washing machines (for example, 2 seconds running, 1 second pause)] is set to 12 seconds, for example. When the operation is stopped for 0.6 seconds, the stirring blade 13 is reversed left and right during this reversal time, and the entire washing process (for example, 12 minutes) is washed with this weak water flow, the washing characteristics are as shown in Figs. 2 and 3. The result is that the clothes 2o in the lower half of the washing tub 12 can be washed, but the clothes 2o in the upper half cannot be washed, and it can be seen that the washing unevenness is large. This is because the stirring force of the stirring blades 13 is difficult to be transmitted to the top. Therefore, the reversal time of the strong water flow [120 to 140% of the reversal time that is the standard water flow of conventional washing machines (for example, 2 seconds of operation, 1 second of rest)] is set to, for example, 2.6 seconds of operation and 1.3 seconds of rest. By using a combined water flow that is periodically inserted into a water flow based on a weak water flow for a short time, the clothes in the washing tub 12 are changed vertically, and the clothes in the upper half of the washing tub 12 are first moved to the lower part, and then the next It can be washed with a gentle stream of water. This result is the fourth
Shown in the figure. The results show that the unevenness of cleaning has become smaller.

By the way, in a weak water current, unlike a conventional water flow, there is no movement force for clothes to get tangled with adjacent clothes, so individual clothes form clumps, and fabric tangles become worse as shown in FIG. 9. When a strong water stream is applied in this state, a strong moving force is exerted, so that the entire clothing moves within the washing tub 12, making it possible to change the top and bottom. Therefore, by using a composite water flow, it is possible to achieve the desired cleaning characteristics (maintaining the desired cleaning rate and reducing uneven cleaning, as shown in FIG. 4) and to reduce cloth entanglement.

As shown in FIG. 5, the composite water flow representing the second embodiment of the present invention has a weak water flow time constant between strong water flows (2 minutes and 15 seconds in this example). As a result, variations in cleaning are reduced, making it possible to further reduce uneven cleaning.

In addition, as shown in FIG. 6, the composite water flow showing the third embodiment of the present invention gradually shortens the weak water flow time between strong water flows, and this is done as time passes. This improves the movement of the cloth that does not exist, so it serves to keep the overall amount of movement of the cloth constant during each weak water flow time, but the effect is almost the same as that of the composite water flow of the first embodiment.

The water flow according to the fourth embodiment of the present invention, as shown in FIG. (For example, 70 to 90% of washing time: 2 seconds of operation, 1 second of rest)] with a constant water flow of 1.6 seconds of operation, 0.8 seconds of rest. By using a medium water flow, the tangle of the cloth will be slightly worse, and the movement of the cloth will be improved, so the cleaning will be better and the washing characteristics will be improved. This is because when washing with a weak water flow, the upper surface of the washing tub 12 does not move easily (as mentioned above, the stirring force of the stirring blades 13 is difficult to transmit), and if you only look at the weak water flow, you may not be able to wash the laundry properly. There is a risk of creating an illusion, so a mid-water flow is used to improve the movement of the cloth.

Now, in this example, the weak water flow, which is the basic water flow of the rated capacity, is operated for 1.2 seconds, paused for 0.6 seconds, and the strong water flow is operated for 2.6 seconds.
Run for seconds, pause for 1.3 seconds, run medium water flow for 1.6 seconds, 0.8
Although the reversal time is set to a pause of seconds, the important point is that the average cleaning rate is close to the target value due to washing characteristics in weak water flow, and the reversal time may be set as long as it can reduce cloth tangling. In addition, with strong water flow, it is sufficient to have a reversal time that allows the clothes on the top and bottom of the washing tub to be swapped.In this example, the ratio of running time to rest time is set to 2, but the larger the value, the better the starting force of the clothes will be. It becomes easier to move. In medium water currents, the reversal time should be longer than in weak water currents, and the movement of the upper clothing should be improved.

Note that the same effect can be obtained by dividing not only the rated capacity water flow but also the water flow suitable for various amounts of laundry into multiple stages and setting the reversal time suitable for each water flow.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, a composite water flow is generated based on a weak water flow and a strong water flow. Washing characteristics (
This improves cleaning efficiency (cleaning efficiency and uneven cleaning), and ultimately reduces cloth tangles.

In addition, by dividing the washing process into two, with the first half being the above-mentioned combined water flow and the second half being a constant water flow of medium water flow, the movement of the cloth is improved during the medium water flow and visual confirmation can be made, allowing the user to check if there is no movement of the cloth. It can also prevent illusions.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a washing machine according to an embodiment of the present invention;
The figure is a cross-sectional view showing the state in which clothes are placed in the washing bin, Figure 3 is a graph showing the cleaning performance with only weak water flow, Figure 4 is a graph showing the cleaning performance with combined water flow, Figures 5 and 6 , 7th
FIG. 8 is an operation diagram of a reversal time limit showing another embodiment of the present invention.
The figure is a sectional view of a conventional washing machine, and FIG. 9 is a graph showing the conventional washing characteristics. 12... Washing tub, 13... Stirring blade, 1
4...Deceleration mechanism section, 16...Motor,
19...Control device. Name of agent: Patent attorney Shigetaka Awano and one other person Figure 20- Jinki Sai C! 1llfl Monument Kōkyōhen No. 1 llfl Monument? Lord Larachi D'4 (I?lse≦C-46saA)V
Su1sha - 1ji Kaji, y4 Changku ■ Kuzu

Claims (2)

[Claims] (1) A stirring blade rotatably disposed in the washing tub, a motor and a deceleration mechanism that drive the stirring blade, and a time limit for reversing the stirring blade that determines the strength of the water flow formed by the rotation of the stirring blade in the washing tub. and a control device that generates a plurality of water flows such as a strong water flow and a weak water flow, and the control device generates a composite water flow in which a strong water flow for a short time is added multiple times based on a weak water flow in the washing process. washing machine. (2) A stirring blade that is rotatably arranged in the washing tub, a motor and a speed reduction mechanism that drive the stirring blade, and a time limit for reversing the stirring blade that determines the strength of the water flow formed by the rotation of the stirring blade in the washing tub. and a control device that generates a plurality of water flows such as a strong water flow and a weak water flow. A washing machine that generates a constant stream of medium water during the latter half of the washing process.