JPH0345680B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of controlling the operating times of a two-tank washing machine, particularly the dewatering rinse operation and the dewatering operation.

[Conventional technology]

In a two-tank washing machine, the washing operation, dehydration rinsing operation, and dehydration operation are performed in separate washing and dehydration tanks, and the operating time of each is arbitrarily set separately at the discretion of the user.

[Problem that the invention seeks to solve]

When setting the operating time using this method, the optimum washing time is determined not only by the amount of items to be washed but also by the degree of dirt, so the user should set the operating time based on these factors. . On the other hand, since the dehydration rinsing operation and the dehydration operation are performed on items to be washed that have already been cleaned, their operating times are determined primarily by the amount of items to be washed.

However, in the past, the operating times for dehydration rinsing and dehydration operations were set arbitrarily at the discretion of the user, which often resulted in operating times that were not commensurate with the amount of items to be washed, resulting in shorter operating times. If it runs too long, it will not be able to perform sufficient rinsing or dehydration, resulting in the inconvenience of detergent and moisture remaining on the items to be washed.On the other hand, if the operating time is too long, it will not only waste water and electricity, but also damage the items to be washed. It also becomes.

[Purpose of the invention]

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
To provide a method for controlling the operation of a washing machine, which can perform dehydration rinsing operation and dehydration operation at the optimum operation time commensurate with the amount of items to be washed with a simple operation, improve washing work efficiency, and save water and electricity. There is a particular thing.

[Means to achieve the purpose]

In order to achieve the above object, the present invention provides a load sensor attached to the motor shaft of a washing motor or a washing shaft linked thereto, which measures the inertial rotational speed of the motor shaft of the washing motor or the washing shaft linked thereto during the washing process. The detected inertia rotation speed is stored in the memory of the control device, and the operating time of the subsequent dehydration rinsing process and dehydration process is automatically set based on the memorized inertia rotation speed. This is what I did.

[Effect]

According to the present invention, the inertial rotational speed of the motor shaft of the washing motor or the washing shaft linked thereto is detected by the load sensor attached to the washing motor or the washing shaft after the washing motor is interrupted or stopped during washing operation. , the detected inertial rotational speed is stored in a storage section of the control device, and based on the stored inertial rotational speed, the operation time of the dehydration rinsing step and the dehydration step subsequent to the washing step is determined,
The dehydration rinsing process and the dehydration process are automatically performed at an operating time commensurate with the amount of items to be washed.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is a longitudinal sectional front view of the load sensor used in the method of the present invention, Fig. 2 is an overall perspective view of the two-tub washing machine as above, and Fig. 3 is a longitudinal sectional front view of the same as above. To explain, in the figure, 1 is a washing tank with an agitator 2 disposed in the center, 3 is a dewatering basket 5 with a water spray tube 4 erected in the center,
A dehydration tank is shown that is composed of a water receiving tank 6 surrounding the dehydration basket 5, both of which are disposed within an outer box 17.

A washing motor 7 is disposed below the washing tank 1, and a motor shaft 8 and a washing shaft, which is a rotating shaft 9 of the agitator 2, are connected to a pulley 1, respectively.
0 and 11 with a V-belt 12, and a dewatering motor 13 is disposed below the water receiving tank 13.
A dewatering motor shaft 14 is connected to a dewatering shaft 16 projecting from the dewatering basket 5 via a coupling 15.

Further, a control panel 18 is attached to the upper front part of the outer box 17. For example, as shown in FIG. 4, this control panel 18 includes a switch 20 for turning on the power, a switch 19 for turning off the power, and a "washing" process, "pre-rinsing" process, or "water pouring rinsing" process in the washing tank 1. Switches 21 and 22 for selecting and setting the operating times, an indicator lamp 23 for displaying the operating times, and a select switch 2 for the "dehydration and rinsing" process.
4 and indicator lamps 25 and 26 for the standard course and careful course of this "dehydration and rinsing", a select switch 27 for the "dehydration" process, an indicator lamp 28 indicating the operating time, etc. are provided on the back side of this control panel 18. A control device 29 using a conventionally known microcomputer or the like is installed.
This control device 29 stores the operating time and operating mode of each process, and controls each of the switches 19 to 22, 2.
Operation signals from the motors 4 and 27 are introduced, and output signals for driving the washing motor 7 and the dewatering motor 13 are also introduced.

In this embodiment, a load sensor 30 is attached to the lower part of the washing motor 7 as shown in FIG. 1 in a two-tank washing machine having such a structure. For example, this load sensor 30 utilizes a speed generator in which a permanent magnet 31 is attached around a motor shaft 8 protruding from the motor 7, and a coil 32 is wound around the permanent magnet 31 at a slight distance from the permanent magnet 31. A lead wire 33 was connected to the coil 32, and the other end of the lead wire 33 was connected to the control device 29.

Note that the load sensor 30 using such a speed generator may be attached to the rotating shaft 9 of the agitator 2 in addition to the motor 7 as described above.

Next, a method of automatically controlling the operating times of the dehydration rinsing process and the dehydration process using such a two-tank washing machine will be described.

Before entering the dewatering and rinsing process, a washing operation is performed, and in this process, the washing motor 7 is intermittently energized, and the agitator 2 is alternately rotated left and right by repeating normal rotation, stop, reverse, and stop. The reason why the washing motor 7 is temporarily stopped between normal rotation and reverse rotation is to avoid applying a load to the washing motor 7 at the start of the next reversal or normal rotation. The initial energization is set in advance in the storage section of the control device 29, for example, as 3 pulses (one pulse is 71 times the motor).

After putting the items to be washed and detergent into the washing tank 1 and supplying water, press the power on switch 20 and then press the "Wash" select switch 21.
The washing motor 7 is energized by the action of the control device 29, rotates three times, and then is once de-energized.

At this time, the washing motor 7 continues to rotate due to inertia even if the power supply is cut off, and this rotation generates a voltage in the coil 32, and this AC voltage signal enters the control device 29 via the lead wire 33, and the control device 29
Then, when the level of this AC voltage reaches a predetermined value or higher, it is assumed that the motor 7 rotates once and is read as one pulse.

In this way, the number of inertial pulses is measured by the control device 29, but this number of inertial pulses varies depending on the amount of items to be washed, and the value is inversely proportional to the amount of items to be washed. , is a determining factor for determining the number of energizing pulses for the next rotation.

In the present invention, the number of inertial pulses is set to 0 to 0, for example.
The load is divided into three stages: 4 pulses as "full load", 5 to 7 pulses as "medium load", and 8 pulses or more as "light load", and input to the control device 29 and temporarily stored in its memory. I'll keep it.

Regarding the storage of the number of inertial pulses, when the first "washing" operation is performed by energizing the pulse train, the number of inertial pulses at this time is first stored in the storage section on the dehydration side, and then the number of inertial pulses is stored in the memory section on the dehydration side, and then the "rinsing" operation is not performed. When the second "washing" operation is performed by energizing the pulse train, the number of inertial pulses at this time is stored in the memory on the washing side, and during this time, the memory contents in the memory on the dehydration side are not cleared and remain as they were. When the main "washing" operation is performed by energizing the pulse train for the third time, the memory contents stored in the dehydration side storage section for the first time are cleared, and are stored in the washing side storage section for the second time. The memory contents are transferred to the dehydration side storage section, and the number of inertia pulses during the third "washing" operation is stored in the washing side storage section.

In this way, the number of energizing pulses determined by the number of inertial pulses is used to repeatedly rotate the washing motor 7 forward and reverse to perform the washing movement, and when this is completed, the process moves to the next "dehydration rinsing" and "dehydration" steps. .

In this embodiment, the "dehydration rinsing" and "dehydration" processes are divided into a "standard course" and a "careful course", and each course is divided into "full load", "medium load", and "light load" of the above-mentioned number of inertial pulses. '', the courses are further divided into ``Strong,''``Medium,'' and ``Weak,'' as shown in Figures 5 and 6.

Then, if you take out the items to be washed from the washing tank 1, transfer them to the dehydration basket 5 of the dehydration tank 3, and press the automatic rinse switch 24 once, the "standard course" will be automatically selected, and the "washing" of the previous stage will be automatically selected. A course corresponding to the number of inertia pulses stored in the dehydration side storage section is automatically selected from the time of operation. For example, if there is a large amount of items to be washed and the number of inertia pulses during "washing" is stored as "3", the "strong" course will be selected and the dewatering motor 13 and water supply valve (not shown) will be activated. When the power is turned on, water is first supplied to the water spray barrel 4 for 15 seconds, and then water is sprinkled from there to the dehydration basket 5. At the same time, the dehydration motor 13 rotates for 50 seconds, and then, while water continues to be supplied, the dehydration motor 13 stops for 70 seconds and rotates for 50 seconds. Repeat for a total of 5 cycles. After the "dehydration rinsing" operation is performed in this way, "dehydration" is performed for 3 minutes.
Automatically transitions to driving. In this state, the lamp 25 and the lamp 28 displaying "3" are lit.

The above driving mode is for when the "standard course" is selected, but to select the "careful course", all you have to do is press the switch 24 twice, and in this case, the operation mode is the same as in the case of the standard course. According to the number of inertia pulses stored during the "Washing" operation, one of the "Strong", "Medium", and "Weak" courses as shown in Figure 6 is automatically selected, and the stored mode is selected. Therefore, "dehydration rinsing" and "dehydration" operations are automatically performed.

It is also possible to set these "dehydration rinse" and "dehydration" operations so that you can arbitrarily select a course other than the automatically selected course. For example, "dehydration" after "dehydration rinse" is completed If you want to change only the operating time or stop the "dehydration" operation, press the switch 27 with the dehydration display to perform the change operation. An example of such a change operation is:
If the switch 27 is pressed once while the ``3'' minute lamp 28 is lit, the dehydration time will be changed to ``1'' minute, and if it is pressed twice, only ``dehydration rinsing'' will be performed and ``dehydration'' will not be performed. If you press it three times, it will change to "5" minutes.

Also, if you press the power off switch 19 before entering the "dehydration rinse" mode, the memory of the number of inertia pulses will be cleared, so if you press the automatic rinse switch 24 in this state, you can select the "standard" course, the "careful" course, '' course, start with the ``Strong'' course, and if you want to cancel the ``Dehydration Rinse'' operation midway through, you can set it to press the automatic rinsing switch 24 three times.

In this way, by changing the number of cycles between energizing and stopping the dehydrating motor 13 according to the load based on the number of inertia pulses stored during the "washing" operation, the optimal operating time for "dehydrating rinsing" and "dehydrating" can be changed. However, in addition to changing the number of cycles in this way, the optimum operation time can be set by
The same effect can be achieved by changing the rotation speed of the dewatering motor 13 or by changing the time of one cycle.

〔Effect of the invention〕

As described above, the operation control method of the two-layer washing machine of the present invention can automatically set the operation time of "dehydration rinse" and "dehydration" to the optimal time corresponding to the amount of laundry to be washed. Detergent and water will not remain on the items to be washed due to insufficient washing, and washing time will not be extended due to excessive operation, and water and electricity will not be wasted, thereby improving washing work efficiency. can.

Furthermore, the operating time can be set by simply pressing the operating switch, making it easy to use.

Furthermore, since the sensor is installed in a location where it does not come in direct contact with the washing liquid, it is possible to always accurately detect the inertial rotation speed without causing false detection due to adhesion of detergent or the like.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional front view of a load sensor used in the operation control method of the present invention, Fig. 2 is an overall perspective view of the two-tank washing machine as above, Fig. 3 is a longitudinal sectional front view of the same, and Fig. 4 is a main part of the same as above. 5 and 6 are explanatory diagrams showing operation modes. 1...Washing tank, 2...Agitator, 3...Dehydration tank, 4...Water barrel, 5...Dehydration basket, 6
... Water tank, 7 ... Washing motor, 8 ... Motor shaft, 9 ... Rotating shaft, that is, washing shaft, 10.
11... Pulley, 12... V-belt, 13...
Dehydration motor, 14...Dehydration motor shaft, 15...
...Coupling, 16... Dehydration shaft, 17... Outer box, 18... Control panel, 19... Switch for power off, 20... Switch for power on, 21, 22... Switch, 23... Display Lamp, 24...Select switch, 25, 26...
Display lamp, 27...Select switch, 28...
...Display lamp, 29...Control device, 30...Load sensor, 31...Permanent magnet, 32...Coil,
33... Lead wire.

Claims (1)

[Claims] 1. A load sensor attached to the washing motor or washing shaft detects the inertial rotational speed of the washing motor or washing shaft during the washing process, and stores the detected inertial rotational speed in the storage section of the control device. , A method for controlling the operation of a two-tank washing machine, characterized in that the operating times of the dehydration rinsing process and the dehydration process are automatically set based on the memorized inertial rotation speed.