JPS63296794A - 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] Industrial Application Field The present invention relates to a washing machine used in general households.
This invention relates to a washing machine that detects the amount of cloth put into a washing/dehydration tank and performs a dehydration process according to the amount of cloth, thereby shortening the washing time.

BACKGROUND OF THE INVENTION Some conventional washing machines have a cloth amount detection means for detecting the amount of cloth put into a washing and dehydrating tank. - Controls each process of dehydration. In other words, when the amount of cloth is small, the washing, rinsing, and spin-drying times are shorter than when the amount of cloth is large, or the reversal time of the pulsator is increased by 1, and the water flow is adjusted to suit the amount of cloth. I'm doing laundry.

According to this, it is possible to operate a washing process that is optimal for the amount of cloth detected by the cloth amount detection means, which improves the damage and tangle performance of the cloth, and also saves resources (fTZ air, detergent, water) and washes. This makes it possible to shorten the cleaning time.

In the normal washing process, each washing process is controlled according to the amount of cloth detected by the cloth amount detection means.

The dehydration process is performed three times: dehydration before the first rinse after washing, dehydration after the first rinse and before the second rinse, and final dehydration after the second rinse.

In the dewatering process in conventional washing machines, the motor is driven continuously, and only the dehydration time during which the motor is continuously driven is controlled according to the amount of cloth detected by the amount of cloth detection means.・Problems to be solved by the invention In such a conventional configuration, if the motor is continuously rotated to intensively dehydrate the detergent liquid, the detergent liquid is intensively dehydrated from the washing/dehydration tank. It is discharged and goes to the drain. However, since the drainage capacity of the drain valve installed at the drain port is fixed, if detergent liquid is discharged in excess of this drainage capacity, the detergent liquid will accumulate inside the outer tank that houses the washing and dehydration tank. There is a problem. In addition, this accumulated detergent liquid foams as the washing and dehydrating tank rotates, and this foam fills between the washing and dehydrating tank and the outer tank, creating resistance to the rotation of the washing and dehydrating tank. There is also the problem that the dehydration process ends before reaching the desired number. As a result, dewatering performance and rinsing performance may deteriorate, or the motor may be overloaded and generate excessive heat.

To prevent this from happening, the motor is turned on and off intermittently to gradually increase the rotational speed of the laundry layer dehydration tank, instead of intensively dehydrating and discharging the detergent solution. , gradual dehydration and discharge may be considered.

However, even in this case, the amount of detergent liquid contained in the cloth naturally varies depending on the amount of cloth. Therefore, there is a problem in that ζ1, in which the motor is simply turned on and off intermittently, is still not sufficient to carry out the dehydration process in response to the amount of detergent liquid.

The present invention solves these problems, and aims to always prevent dehydration and rinsing performance from deteriorating regardless of the amount of cloth, and to shorten the time required for the dehydration process. .

Means for Solving the Problems In order to solve the problems, the present invention is equipped with a cloth amount detection means for detecting the weight of the laundry put into the washing and dehydration tank, and the dehydration process after washing or rinsing. A washing machine configured to drive the motor intermittently by turning the motor on and off at In the intermittent cycle of one intermittent dehydration step, the motor is provided with a control means that lengthens the on time and shortens the off time of the motor, and shortens the time of the intermittent dehydration step.

Operation In such a configuration, the IL of the detergent liquid contained in the cloth varies depending on the amount of cloth, and the smaller the amount of cloth, the smaller the amount of detergent liquid. Therefore, when the amount of cloth is small, there is no problem even if the detergent solution is intensively dehydrated and discharged to some extent, as long as the amount of detergent solution does not exceed the capacity of the drain valve.

Therefore, when the amount of cloth detected by the cloth amount detection means is small, in the intermittent spin cycle, the on time is longer and the off time is shorter than when the amount of cloth is large. Start up the rotation quickly.

As a result, the detergent liquid contained in the cloth is quickly dehydrated and discharged without deteriorating the dehydration and rinsing performance, and the time for the dehydration process is shortened.

Embodiment FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. Here, reference numeral 1 denotes a water level detection means, which detects the water level in the washing and dehydrating tank. The water level detection means 1 is connected to a water level discrimination means 2, which receives the output of the water level detection means 1 and the output of the storage means 8, and discriminates the water level. Reference numeral 4 denotes a cloth amount detection means which detects the amount of cloth thrown into the washing tub and sends its output to cloth amount determination means 5.
Enter. The cloth amount determining means 5 inputs the output of the cloth amount detecting means 4 and the output of the storage means 8, and determines the cloth amount. Outputs from the water level determining means 2, the amount determining means 5, and the storage means 8 are all input to the control means 6. The control means 6 controls the water supply valve driving means 7 to open and close the water supply valve, thereby controlling the inflow of water into the washing and dewatering tank. It also controls the pulsator driving means 8 to rotate and stop the pulsator.

Further, the control means 6 controls the motor drive means 9, rotates and stops the motor, and controls the rotation of the washing and dewatering tub. Further, the control means 6 controls the drain valve driving means 1° to open and close the drain valve.

The water supply valve is opened by the control means 6 to allow water to flow into the washing and dewatering tank, and when the water level determination means 2, which inputs the output of the water level detection means 1, generates an output indicating that the water level has reached a predetermined level, the water supply starts. The water supply valve is closed via the valve drive means 7. Then, the pulsator is rotated by the pulsator driving means 8. Depending on the power required to rotate this pulsator,
The weight of the laundry (cloth ff1) in the washing and dehydrating tank is detected by the cloth amount detecting means 4 and the cloth amount determining means 5. This amount of cloth is stored in the storage means 8. On the other hand, in order to adjust the water level according to the amount of cloth, the water supply valve driving means 7 opens the water supply valve again to obtain an appropriate water level, and the pulsator is rotated via the pulsator driving means 8 to perform the washing process. After washing is completed, the drain valve is opened by the drain valve driving means 10 to drain the water. After draining water for a predetermined period of time, the washing and dehydrating tub is rotated by the motor driving means 9 with the drain valve open, and the dehydrating process begins. Further, the rinsing process is also controlled in the same way.

FIG. 2 is a circuit diagram showing a specific configuration of this embodiment.

Reference numeral 11 denotes a washing/dehydration tank, and a pulsator 12 rotated by a pulsator driving means 8 is disposed at the inner bottom thereof. An outer tank 18 is provided outside the washing and dewatering tank 11, and a drain port 15 communicating with a drain valve 14 is provided at the bottom of the outer tub 18. The drain valve 14 is opened and closed by the drain valve driving means 10 to discharge water to the outside of the machine. The water level detection means 1 includes a pipe 16 communicating with an outer tank 18.
and a plurality of stages of detectors 17. The cloth amount detection means 4 is.

It detects the current flowing through a motor (not shown) for driving the pulsator 12.

18 is a microcomputer as a control means;
The built-in program determines the water level and amount of cloth, and the water supply valve 19. A fourth signal for driving the pulsator 12 and the like is generated. Specifically, it includes a storage section 20 that stores water level data, cloth amount setting values, etc., and an input section 21 that inputs the output of the water level detector 17 and the output of the cloth amount detection means 4, etc.
and an output section 22 that outputs control signals to the water supply valve drive means 7, pulsator drive means 8, motor drive means 9, and drain valve drive means IO, and performs data comparison calculations, etc. has. 24 is a power switch.

Next, the operation of this embodiment will be explained. FIG. 3 shows the main part of a flowchart under the control of the microcomputer 18.

Generally, after putting the laundry into the washing and dehydrating tub 11, the user adds detergent and operates the power switch 24 to start washing. With this operation, the microcomputer 18
In step 101, the water supply valve 19 is opened via the water supply valve driving means 7 to start water supply.

On the other hand, when it is detected in step 102 that the water supply up to the set water level has been completed based on the output of the detector 17 of the water level detection means 1, the water supply valve 19 is closed in step 108. Next, the microcomputer 18 starts the operation of the cloth amount detection means 4 in step 104. That is, the lusator 12 is rotated for a predetermined period of time via the pulsator driving means 8. This pulse is detected by the detection means 4. This detection signal is input to the input section 21 of the computer 18 and the data is stored in the storage section 20. Then, in step 105, the pulsator 12 is rotated via the pulsator driving means 8 to perform washing. After washing is completed, in step 106, the drain valve 14 is opened via the drain valve driving means 10 to drain water.

Next, based on the cloth amount detected in step 104, it is determined in step 107 whether the amount of cloth is greater or less than a predetermined value, and if the amount is large, step 10
The process proceeds to intermittent dehydration I in Step 8 and dehydration II in Step 109. On the other hand, if it is determined that the amount of cloth is small, the process proceeds to step 110, intermittent dehydration (2), and step 111, dehydration (2).

Here, in intermittent dehydration, the motor is rotated via the motor drive means 9 to rotate the washing/dehydration tank 11, but during this rotation, the current flowing to the motor is intermittently turned on and off. repeat. Instead of intensively dehydrating the detergent liquid contained in the cloth by continuously circuiting the washing/dehydration tank 111, the washing/dehydration tank 11 is dehydrated by turning the motor on and off intermittently. The number of rotations of
As you can see in the figure, the goal is to gradually raise the level.

In this way, the detergent solution exceeding the drainage capacity of the drain valve 14 is not discharged all at once, and this detergent solution is prevented from accumulating in the outer tank 18.

In addition, for this reason, the accumulated detergent liquid foams due to the rotation of the washing/dehydrating tank 11, and this foam is transferred to the washing/dehydrating tank 11 and the outer tank 1.
It is also possible to prevent the spin-drying process from ending before a predetermined number of rotations is reached because the washing and spin-drying tub 11 is filled with water during the rotation speed of 8 and becomes a resistance to rotation.

Naturally, the amount of detergent contained in the cloth varies depending on the cloth.
The more cloth, the more detergent solution. vice versa.

If the amount of cloth is small, the amount of detergent solution is also reduced, and the amount of detergent solution in the intermittent dehydration process is also reduced. In this case, even if the detergent liquid is intensively dehydrated and discharged to some extent, there is no problem as long as the capacity of the drain valve 14 is not exceeded. Therefore,
When the amount of cloth detected by the cloth amount detection means 4 is small, as shown in Table 1, in the on/off cycle during intermittent dehydration, the on time and off time are set longer than when the amount of cloth is large. By making it shorter, the rotation of the washing and dehydrating tank 11 is started up quickly.

Table 1 As a result, the detergent liquid contained in the cloth can be quickly dehydrated and discharged, and the intermittent dehydration time can be shortened. As a result, the time for the dehydration process can be shortened. This will be even more effective if it is carried out in conjunction with conventional dehydration time control.

After the above dewatering process is completed, the drain valve is closed in step 112, water is supplied for the next rinse in step 118, and the process moves to step 114, which is a rinsing process. Dehydration after rinsing is also the same as above.

Effects of the Invention As described above, according to the present invention, there is provided a cloth amount detection means for detecting the weight of the laundry put into the washing and dehydration tank, and according to the amount of cloth detected by the cloth amount detection means, When the amount of cloth is small, the intermittent dewatering time can be shortened because the intermittent dewatering process is equipped with a control means that makes the on time of the motor of the intermittent cycle longer and the off time shorter than when the amount of cloth is large. The dehydration process time can be shortened without deteriorating the dehydration and rinsing performance, and the washing time can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of main parts of a washing machine according to an embodiment of the present invention.
FIG. 2 is a specific circuit diagram of the washing machine, FIG. 3 is a flowchart of the washing machine, and FIG. 4 is a diagram showing the relationship between the rotation speed of the washing/spin-drying tub and the spin-drying time during intermittent spin-drying. 4... Cloth amount detection means, 6... Control means, 11...
Washing and dehydration tank. Figure 1 Figure 2 Figure 3 Next step

Claims (1)

[Claims] 1. Equipped with a cloth amount detection means for detecting the weight of the laundry put into the washing and dehydration tank, and configured to drive the motor intermittently by turning on and off during the dehydration process after washing or rinsing. In the washing machine, when the amount of cloth is small according to the amount of cloth detected by the cloth amount detection means,
A washing machine equipped with a control means that lengthens a motor's ON time and shortens its OFF time in an intermittent cycle of an intermittent spin-drying process, and shortens the time of the intermittent spin-dry process, compared to when the amount of cloth is large.