JPH0380893A - Washing machine - Google Patents

Abstract

PURPOSE:To exchange upper and lower clothes and to prevent washing non uniformity from being generated by providing a motor to drive a stirring fan, deceleration mechanism part and controller to control the strength of a water current with the inverse time limit of the stirring fan, and to generate the plural water currents. CONSTITUTION:A motor 15 to drive a stirring fan 13 and a deceleration mechanism part 14, a controller 19 to control the strength of the water current in a washing tank 12 by reversing time limit of the fan 13 and to generate the plural water currents such as a strong water current and a weak water current, etc., are provided. Based on the weak water current, a composite water current, for which the weak water current is put in for a short time by plural times, is generated. Thus, the lower half of the clothes in the washing tank 12 are washed in the case of weak current and the respective clothes are set up. Further, the upper and lower clothes are washed in the case of weak current. Then, the upper and lower clothes in the washing tank are exchanged by the strong water current in a short time and the clothes to be lower half (the clothes in the upper half of the washing tank at the initial period of washing) is classified and the respective clothes are set up. Since the reversing time limit of weak and strong water currents is formed to the two continuous right and left reversing time limit such as left-left and right-right in order the upper and lower clothes in the washing tank can be exchanged for the upper and lower clothes can be exchanged without fail.

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 washing process is a composite water flow consisting of a plurality of water flows.

BACKGROUND ART As shown in FIG. 7, 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 transmitted via a motor pulley 7, a belt 8, and a pulley 9 to a speed reduction mechanism 5 that selectively switches and rotationally drives the washing tub 4 and stirring blades 3. There is.

During the washing process, the deceleration mechanism section 5 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 set by setting the reversal time of the stirring blade 3, and the water flow suitable for various types of laundry can be selected in multiple stages. For example, the washing machine was operated for 2 seconds and stopped for 1 second, and the stirring blade 3 was reversed from side to side during this reversal time period, and the entire washing process was carried out at a constant water flow of this 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.

The strength of the water flow is suitable for each of the above-mentioned washing clothes when it is reversed! )
Basically, the washing clothes are divided into several weight levels, a set amount of clothes are put in each weight, and the reversal time of each water flow is set to achieve the desired cleaning effect. There is.

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 8 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 washing, and fabric lint when washing with a standard water flow (for rated amount) in a reversal time period is set as 100, and as the reversal time period decreases, cloth lint decreases, but washing unevenness increases. I know what will happen.

Incidentally, not only the standard water flow but also the case of water flow suitable for other weights shows the same tendency as the washing characteristics shown in FIG. 8. The cause of the change in washing characteristics due to the decrease in reversal time is as follows.
This is because the strength of the water flow is set by time control of the reversal time of the stirring blade. This is because in order to transmit the stirring force to the clothes at the top of the washing tub, the stirring blades must either rotate more often or increase the rotational torque.In order to wash the clothes at the top, The reversal time of the agitating blades has to be lengthened, which means that the clothes at the bottom of the washing tub 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 present invention aims to control water flow so as to reduce cloth entanglement while maintaining washing characteristics, reduce uneven washing, and enable visual confirmation of vertical change of cloth.

Means for Solving the Problems In order to achieve the above object, the present invention provides a stirring blade rotatably disposed in a washing machine, a motor and a speed reduction mechanism for driving the stirring blade, and a stirring blade installed in the washing tub. The strength of the water flow formed by rotation is controlled by the reversal time of the stirring blade, creating a strong water flow.
a control device that generates a plurality of water flows such as a weak water flow;
This system generates a composite water flow including a plurality of short-time strong water flows, and sets the horizontal reversal of at least one of the weak water flow or the strong water flow to two consecutive horizontal reversal times: left, right, left, and right.

Effect: With the above configuration, the clothes in the lower half of the washing tub are washed in a weak water flow, and the 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, in a weak water flow, unlike a conventional water flow, the moving force that is enough to fit into adjacent clothes is not a single reversal, so the individual clothes stick together, and the progress of tangles or the degree of tangles is reduced. In addition, since the reversal time of weak water flow and strong water flow is set to two consecutive left and right reversal times such as left, right, left and right, in strong water flow, it is possible to reliably replace the clothes above and below the washing tub. That is, the clothes that could not be moved in one reversal become movable in the next reversal in the same direction, thereby reducing uneven washing between the top and bottom of the clothes. In addition, in weak water flow, in order to reduce fabric entanglement, the moving force during one reversal is weak, so there is a risk that the moved clothes will be returned in the next reverse rotation direction, so reversals in the same direction are repeated twice. By doing so, the returning action is reduced, the movement of the clothes is promoted, and uneven washing of the clothes is reduced.

EXAMPLE Hereinafter, an example of the present invention will be explained with reference to FIGS. 1 to 6.

The configuration of the swamp washing machine of this embodiment is as shown in FIG.
A washing tub 1 is rotatably placed in a water receiving tank 11 provided in
2, and a stirring blade 13 is rotatably disposed at the inner bottom of the washing tub 12. The speed reduction mechanism section 14 selectively switches and rotates the washing tub 12 and the stirring blades 13.
The rotational force of the motor 15 is applied to the motor pulley 16, ■Belt 1
7. The power is transmitted via the pulley 18, and the motor 15 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 types of laundry, making it possible to select one.

In the above configuration, the reversal time of the weak water flow that is the basic water flow for the rated capacity [50 to 70% 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 1. The operation was performed for 2 seconds and paused for 0.6 seconds, and the stirring blades 13 were reversed left and right during this reversal time, and the results of washing with this weak water flow for the entire washing process (for example, 1.2 minutes) are shown in Figures 2 and 3.
This will be explained using figures. That is, clothes A, B, C, and D located in the lower half of the washing tub 12 can be washed, and clothes F in the upper half can be washed.
, G, H, and I could not be cleaned, and it can be seen that the cleaning unevenness was large.

This is because the stirring force of the stirring blades 13 is difficult to be transmitted to the top. Figure 4 shows the results of washing the entire washing process with this weak water stream for 20 minutes.It is clear that the cleaning rate in the lower part of the washing tub is greatly improved, but the cleaning rate in the upper part of the washing tub is lower. Although the average cleaning rate improves only slightly, the unevenness of washing increases, so no matter how long the washing time is lengthened, the unevenness of washing cannot be reduced. Also, the longer the time, the more the fabric will be damaged.

Therefore, as shown in Fig. 5, 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 2.6%, for example.
The inside of the washing tub 12 is made to run for seconds, pause for 1.3 seconds, reverse the left and right rotation twice in a row (left, left, right, etc.), and create a composite water flow that is based on a weak water flow and periodically makes holes for a short time. The clothes in the upper half of the washing tub 12 are first moved to the lower part of the washing tub 12, so that they can be washed in the next weak water flow, and by repeating this weak water flow and strong water flow, as shown in Figure 6. As you can see, the unevenness of cleaning has become smaller.

By the way, in a weak water flow, unlike a conventional water flow, the clothes do not have enough movement to fit into adjacent clothes, so individual clothes form clumps and the fabric becomes entangled as shown in FIG. 8. In this state, if you apply two consecutive left-right reversal strong water currents,
Clothes that could not be moved in one reversal can now be moved in the next reversal in the same direction, and there is no fear that the clothes will return in the next reverse rotation direction, unlike the conventional one-time left-right reversal. , clothes can be moved within the washing tub 12 and can be changed up and down. 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. 6), and to reduce cloth entanglement.

Furthermore, when washing clothes, if the clothes are not turned upside down, the user may have the illusion that the top surface of the washing tub 12 is not being cleaned properly, so the strong water flow ensures that the clothes are turned upside down visually. By doing so, it is possible to eliminate the user's discomfort.

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.
The reversal time is set to run for seconds and pause for 1 to 3 seconds, but the point is that in weak water flow, the average cleaning rate is close to the target value in terms of washing characteristics, and the reversal time can be set as long as it can reduce cloth tangling. In addition, in the case of strong water flow, it is sufficient if there are two consecutive left/right reversals that allow the user to change the clothes on the top and bottom of the washing tub and visually judge the time. In addition, not only is there a time limit for two consecutive left-right reversals only for strong water flows, but also a time period for two consecutive left-right reversals is required for weak water flows. This makes it possible to further reduce uneven washing of clothes.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, by making the reversal timed to the left, left, right, and two consecutive left and right reversals in a composite water flow based on a weak water flow and a strong water flow, First, wash the lower half of the washing tub with weak water, harden each garment, and reduce the progress or degree of tangles in the fabric.
Next, it is possible to change the clothes in the washing tub up and down during strong water flow, and it is possible to eliminate uneven washing between the upper and lower parts of the washing tub. In addition, by double-continuous left-right reversal during strong water flow, the movement of the upper and lower clothing is particularly ensured, and the upper and lower clothing can be replaced so that it can be visually confirmed, thereby reducing uneven washing.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a washing machine according to an embodiment of the present invention, Fig. 2 is a cross-section 9 showing the state in which clothes are loaded in the washing machine, and Fig. 3 is a graph showing the washing performance with only weak water flow. , Fig. 4 is a graph showing the cleaning performance when the washing time with a weak water current of 1 is increased, Fig. 5 is a composite water flow reversal time diagram showing one embodiment of the present invention, and Fig. 6 is a graph showing the washing performance with the same combined water flow. FIG. 7 is a sectional view of a conventional washing machine, and FIG. 8 is a graph showing conventional washing characteristics. 13... Stirring blade, 14... Speed reduction mechanism section, 15... Motor, 19... Control device.

Claims (1)

[Claims] A stirring blade rotatably arranged in the washing machine, a motor and a speed reduction mechanism for driving the stirring blade, and controlling the strength of the water flow formed in the washing tub by the rotation of the stirring blade by a reversal time of the stirring blade, 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 weak water flow is the main tone and a plurality of short-term strong water flows in the washing process, and at least A washing machine that reverses the left and right flow of either weak water flow or strong water flow by two consecutive left and right reversals.