JPH0420385A - Fully automatic 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 Field of the Invention The present invention relates to a fully automatic washing machine that prevents water from splashing on clothes.

BACKGROUND OF THE INVENTION In recent years, fully automatic washing machines have been required to be more comfortable during use, such as reducing noise and preventing water from splashing.

Conventionally, this type of fully automatic washing is based on water level, water flow, washing time,
There are individual changeover switches that allow you to change the number of rinses, dehydration time, etc., as well as multiple automatic course changeover switches with preset programs. There is still a load amount detection device that detects the amount of laundry in Japanese Patent Application Laid-Open No. 1999-1.
As shown in Japanese Patent No. 85292, many such devices have been provided. This type of load detection device determines the load by supplying a small amount of water to the washing tub, controlling the pulsator alternately in positive and reverse directions, and measuring the inertia rotation speed when the motor is off. The method that counts the number of PALNU on page 3 when the motor is off is basically the same.

This load amount detection device is one of the automatic courses.
It is installed as a sensor corner in the machine, and operates by determining the water level, water flow, washing time, etc. according to the detected amount of cloth.

Problems to be Solved by the Invention In such conventional fully automatic washing machines, when the user selects the water level, water flow, washing time, etc. according to their preference using the individual switch, the load amount detection device is activated. As a result, the following problems arise.

For example, when the rated washing capacity is 6kg, the pulsator shape and standard water flow must be such that 5# can be washed at a high water level, and the 5# should be washed according to the user's preference at a walking capacity of around 1kg, for example. When you try to wash with a high water level and standard water flow, the cloth rotates violently and because the water level is so high that there is little difference in height from the top of the washing tub, water jumps out of the washing tub and wets the floor.

The present invention is intended to solve the above-mentioned problems, and the first object of the present invention is to prevent the floor surface from getting wet due to splashing water caused by strong water flow when the amount of cloth is small, and to enable washing with a water flow corresponding to the small amount of cloth. 1 purpose.

A second purpose is to make the user clearly aware of the need to increase the amount of laundry or change the initial water level when the amount of laundry is small, so that the user can wash the clothes in an optimal condition.

Means for Solving the Problems In order to achieve the above-mentioned first object, the present invention has a signal control means composed of a microcomputer, and a signal control means that can change the water level, water flow, washing time, number of rinses, and spin-drying time in multiple stages. An individual changeover switch, a plurality of automatic course changeover switches with preset programs, a display device for each of the changeover switches, an alarm device, a water level detection means for detecting the water level, and a terminal voltage of a phase advance capacitor during washing. and a cloth amount detection means for detecting the amount of laundry cloth by the number of pulses, and when the water level is selected as a high water level and the water flow is selected as a standard water flow with the individual changeover switch, the said cloth amount detection means is operated after water is supplied to the high water level. When it detects that the amount of cloth is less than a small amount of cloth and more than a very small amount of cloth, the water flow is changed to weak water flow, and when it is detected that the amount of cloth is less than a very small amount of cloth, the water level is changed and the water flow is changed to the standard water flow after changing the water level. The first means of solving the problem is to set it to .

In addition, in order to achieve the second objective, the first method described above is used as a second means for solving the problem.

Effects of the present invention is based on the above-mentioned first problem-solving means, and can prevent water from splashing even when washing with a small amount of cloth, a high water level, and a standard water flow, and can wash with a weak water flow according to the amount of cloth. Can be washed properly. In addition, when attempting to wash a smaller amount of cloth using a standard water flow at a higher water level, the washing can be performed appropriately using a standard water flow at a reset water level at a lower water level than the initial setting water level.

In addition, by using the second problem-solving means, we can use a very small amount of cloth at a high water level.
When attempting to wash with standard water flow, an abnormality is reported and the machine is temporarily stopped, and the user is notified of insufficient amount of cloth or to set the water level to a low level, allowing washing to be carried out in an appropriate state.

EXAMPLE Hereinafter, an example of the first problem-solving means of the present invention will be described with reference to FIGS. 1 and 2.

As shown in the figure, a washing tub/dehydration tub 1 has a pulsator 2 rotatably disposed at the center bottom. The water tank 3 includes a washing tank/dehydration tank 1, a substrate 4 is fixed to the outer bottom of the water tank 3, and a driving motor 5. Drainage solenoid valve6. A washing/dehydration switching mechanism 7 and the like are provided, and the outer edge of the substrate 4 is provided with a vibration isolating device 8. It is suspended and supported from the upper corner of the outer frame 1o via a hanging rod 9. An upper cover 11 is fixed to the upper part of the outer frame 10, and a water supply valve 12, a power switch 13. A control device 14 and the like are provided. The control device 14 includes a drive motor 5. Drain solenoid valve 6
．． Controls the water supply valve 12 and the like.

An AC power source 15 applies voltage to the control device 14, and a phase advance capacitor 16 is connected to the drive motor 5. The control device 14 is housed in a signal control means 17 consisting of a microcomputer γ vane and an operation panel 18, and controls water level, water flow, washing time, and number of rinses.

An individual changeover switch 19 that selects dehydration time in multiple stages and operates as an individual cog, an automatic course changeover switch 20 with a preset program, a start/-stop switch 21 that serves both start and stop, and a display device. 22 and a notification device 23.
4, and a drive motor 5. by a signal from the signal control means 17. Drainage solenoid valve6. It is composed of a power switching means 25 for controlling the water supply valve 12, etc., a cloth amount detection means 26, a water level detection means 27, and a storage means 28.

The cloth amount detection means 26 is for counting the number of terminal voltage pulses of the phase advancing capacitor 16 of the drive motor 6, and is for detecting inertial rotation when the motor is not energized during washing agitation. When the drive motor 5 is rotated and energized is stopped, the terminal voltage of the phase advance capacitor 16 exhibits the attenuation characteristic shown in FIG. The decay time td1 becomes shorter. Figure 3 (B)
When the amount of cloth is small, the number of decay pulses is large and the decay time td
2 is long. When the drive motor 5 stops rotating, the terminal voltage of the phase advance capacitor 16 disappears, so this is basically the same as inertial rotation speed detection. Figures 4 (M and 4B) show the energization control of the drive motor 5 when detecting the amount of cloth. When the automatic course changeover switch 2° is set to ``Sensor Corne'', water is supplied to a very small level; When the water level 19a of the individual changeover switch 19 selects the high water level and the water flow switch 19b selects the standard water flow, water is supplied to the high water level and the water level shown in Fig. 4 (A) is selected.
3. The agitation control shown in CB) is performed, the number of pulses of the phase advance capacitor 16 when the drive motor 5 is off is counted and accumulated, and the amount of cloth is determined based on the total number of pulses.

Figure 5 shows the relationship between the amount of cloth and the number of cloth amount detection pulses. It shows the frequency distribution, the frequency distribution when a medium amount, a small amount, and a very small amount are added. N1. N2. In the case of the sensor course, N3 is a threshold value for determining the water level as high water level, middle 9 bene water level, low water level, or small water level. In the case of an individual Korg using the individual changeover switch 19, use N2' as the threshold and divide it into small amounts (for example, 2 # for a rated capacity of 5 kg) or less or medium quantities (3.5 # for a rated capacity of 6 #) or more. , with N3' as the threshold, divide the flow into extremely small amounts (for example, 0.8 # for a rated capacity of 5 kg) or more. If the amount is less than a small amount, change to weak water flow, and if it is more than medium amount, leave the standard water flow as is. do. However, if the amount of fabric is even smaller than a small amount, the water level should also be changed from a high water level to a low water level. The threshold value for determining the amount of cloth according to the number of cloth amount detection pulses is set in advance and stored in the memory (ROM) of the microcomputer in the signal control means 17 or the memory in the storage means 28.

FIG. 6 shows the operation display means 24, water level switch 19a, water flow switch 19b, and washing time switch 19C.
5 Rinse number switch 19d, dehydration time switch 19e
A different individual changeover switch 19, an automatic coach changeover switch 2o, and a start/-time stop switch 21 are provided.

10 penos Display sections 22a, 22b, 22c, 22d, 22e.

22f are water level switch 19a and water flow switch 1, respectively.
9b, etc., and the display section 22g is a display device 22 that displays an abnormality.

The operation of the above configuration will be explained with reference to FIG.

When the power switch 13 is turned on, the program starts, and after the key is pressed manually in step 101, it is determined in step 102 whether the automatic course is selected.

If the automatic course is 6, use Stellaf 0103 to determine whether it is a sensor course, and if it is a sensor course, step 105
Water is supplied to the minimum water level at steps 105 and 106, and the amount of cloth is determined.From then on, a weight-based course corresponding to the amount of cloth is operated. If it is determined in step 102 that the water level is not automatic, the process proceeds to step 107 to determine whether or not the water level is high. If the water level is high, the high water level is displayed in step 108. Step 109
It is determined whether the water flow is a standard water flow or not, and if it is a standard water flow, the standard water flow is displayed in step 110. In step 111, water is supplied to a high water level, and in step 112, the water is agitated.
7. Count the number of pulses of the phase advance capacitor 16, and in step 113, determine the amount of cloth. If it is determined in steps 114 and 115 that the amount of cloth is less than a small amount and more than a very small amount, step 116
Go to , change to gentle water flow, and start washing. Step 114
If it is determined that the amount of cloth is not less than a small amount, the process proceeds to step 117, where washing starts with the high water level and standard water flow, and the process proceeds to the next step. If it is determined in step 115 that the amount of cloth is not more than extremely small, the set water level is changed and notified in step 118, and the water is drained in step 119. If it is determined in step 115 that the amount of cloth is not more than extremely small, the set water level is changed in step 118. The change is notified and the water is drained in step 119, and the water continues to be drained in step 120 until it reaches the middle water level. When the water level reaches the middle water level, the middle water level is displayed in step 121, and in step 122, washing starts with the standard water flow at the middle water level, and the process advances to the next step. In addition, in the above flowchart, the water level was changed to the middle water level in step 120, but
The water level may be changed to a lower or even lower water level.

As described above, according to the fully automatic washing machine of the embodiment of the first problem solving means, when the water level is selected as the high water level and the water flow as the standard water flow with the individual changeover switch, the cloth amount detection means 26 is activated after water is supplied to the high water level. When the water flow is detected to be less than a small amount of cloth and more than a very small amount of cloth, the water flow is changed to a weak water flow. You don't have to start washing the laundry directly, you can prevent water from splashing due to strong water currents, and it is possible to prevent the floor from getting wet.
Can be washed with water flow suitable for small amounts of cloth. When it detects that the amount of cloth is less than an extremely small amount, the water level is changed and the water flow is set to the standard water flow after changing the water level, so the cloth does not float due to too much water, and it can be done efficiently and appropriately. Can be washed.

Next, an embodiment of the second problem solving means will be described.

The signal control means 1 in FIG. 1 selects the water level as high water level and the water flow as standard water flow with the individual switching switch 19, and after supplying water to the high water level, the cloth amount detection means 26 detects that the amount of cloth is less than or equal to i. In this case, an output is output to the notification device 23 to notify the abnormality, and the entire device is temporarily stopped. The other 13-heno configuration is the same as the above embodiment.

The operation of the above configuration will be explained with reference to FIG.

In FIG. 8, steps 100 to 117 are the same as those in the above embodiment, so their explanation will be omitted. If it is determined in step 115 that the amount of cloth is not more than an extremely small amount, the process proceeds to step 123, where the notification device 23 issues an abnormality notification indicating that washing is not possible, and in step 124, an abnormality is displayed on the abnormality display section 22g, and the process is temporarily stopped in step 125. state and prompts the user to reset the appropriate washing conditions.

As described above, according to the fully automatic washing machine of the embodiment of the second problem solving means, when the cloth amount detection means 26 detects that the amount of cloth is less than an extremely small amount after water is supplied to a high water level, the notification device is activated. Since it is designed to notify the user of an abnormality and stop at -, the user can be notified of an increase in the amount of laundry or a change in the initial setting water level, and after resetting, the machine can be restarted and washed under optimal conditions.

In each of the above embodiments, page 14 shows that the standard water flow is selected at a high water level and changed to a weak water flow when the amount of cloth is small, but depending on the shape of the pulsator or the strength of the standard water flow, it is Needless to say, the same effect can be obtained if the same control is performed at a standard water level at a medium water level, even when water is splashed with a small amount of cloth.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, when the water level is set to high water level and the water flow is set to standard water flow using the individual changeover switch, the cloth amount detection means is operated after water is supplied to the high water level. When it detects that the amount of cloth is less than a small amount of cloth and more than a very small amount of cloth, only the water flow is changed to a weak water flow, and when it is detected that the amount of cloth is less than a very small amount of cloth, the water level is changed and the water flow is set to the standard water flow after changing the water level. Therefore, even if the user selects a high water level regardless of the walking capacity, the amount of cloth is judged at the high water level, and the washing process does not start with the standard water flow, but instead changes to a weak water flow, so it is possible to use a strong water flow. Washing can be done with a stream of water suitable for a small amount of cloth without making the floor wet due to water splashing. In addition, for even smaller amounts of cloth, when the water level is high, the cloth floats and the cloth is rubbed against the pulsator very rarely and cannot be washed efficiently, but by resetting the water level and water flow, Able to do proper laundry.

When the cloth amount detection means detects that the amount of cloth is less than an extremely small amount, the alarm device issues an abnormal alarm and stops at - time, so the user can request to increase the amount of laundry or set the initial water level. Changes can be clearly recognized and laundry can be done in the best condition.

[Brief explanation of drawings]

Fig. 1 is a block circuit diagram of a fully automatic washing machine according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the same fully automatic washing machine, and Fig. 3 is a detection means for detecting the amount of cloth in the fully automatic washing machine. Signal waveform diagram, Figure 4 is a motor drive characteristic diagram of the same cloth amount detection means, Figure 5 is a cloth amount detection characteristic diagram of the same cloth amount detection means, and Figure 6 is a diagram of the operation display panel of the same fully automatic washing machine. FIG. 7 is a flowchart showing the operation of the fully automatic washing machine, and FIG. 8 is a flowchart showing the operation of the fully automatic washing machine according to another embodiment of the present invention. 16... Phase advance capacitor, 17... Signal control means, 19... Individual changeover switch, 20...
... Automatic course changeover switch, 22 ... Display device, 23 ... Notification device, 26 ...
Cloth amount detection means, 27...Water level detection means.

Claims (2)

[Claims] (1) Signal control means consisting of a microcomputer;
Individual changeover switches that can change water level, water flow, washing time, number of rinses, and dehydration time in multiple stages, multiple automatic course changeover switches with preset programs, display devices for each of the changeover switches, and notification devices. , a water level detection means for detecting the water level, and a cloth amount detection means for detecting the amount of washing cloth by the number of terminal voltage pulses of the phase advance capacitor during washing, and the water level is set to high water level, high water level,
When the water flow is selected as the standard water flow, the cloth amount detection means is operated after water is supplied to a high water level, and when it is detected that the amount of cloth is less than a small amount of cloth and more than a very small amount of cloth, only the water flow is changed to a weak water flow, and when the amount of cloth is less than a very small amount, This fully automatic washing machine changes the water level and sets the water flow to the standard water flow after changing the water level when it detects that there is a water level. (2) The fully automatic washing machine according to claim 1, wherein when the cloth amount detecting means detects that the amount of cloth is less than an extremely small amount, an abnormality is notified by an alarm device and the washing machine is temporarily stopped.