JPS60156491A - Control apparatus of washer - 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 Technical Field The present invention relates to a control device that automatically controls the water supply amount, water flow strength, washing time, spin-drying time, etc. of a washing machine.

<Prior art> In conventional laundry, a person who wants to wash) puts the laundry in a water tank, and then determines the amount of water to be supplied, the strength of the water flow, the washing time, and the dehydration process based on the approximate amount of laundry. Since the time and other factors were determined based on intuition and experience, there was waste, such as excessive water supply, washing time, and dehydration time.

<Purpose> Therefore, the present invention automatically weighs the amount of laundry and automatically controls water supply amount, water flow strength, spin-drying time, etc., thereby eliminating waste and failure of washing due to intuition and experience. The purpose of the present invention is to provide a relatively simple and inexpensive control device for a washing machine.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. First, to explain an embodiment in which the present invention is applied to control of spin-drying time, a washing machine control device includes a motor control device A that controls ON/OFF of a condenser motor M, and a motor control device A that controls ON/OFF of a condenser motor M, and a motor control device A that controls ON/OFF of a condenser motor M. It is equipped with a voltage detection device B that detects voltage changes at both ends, and a load amount detection device C that measures the amount of load applied to the condenser motor M from the voltage change, and determines the amount of water supplied and the strength of the water flow based on the amount of load. , to control dehydration time, etc.

The capacitor motor M has a capacitor 1
Since the magnetodynamic current is compensated by the advanced phase current, the starting current is small and the starting torque is large.

Further, 2.3 is a winding of the condenser motor M, and 4 is a drive section of the condenser motor M. The condenser motor M is operated by a drive circuit 5, which is a motor control device A, by receiving an output from a controller 100. This drive circuit 5 consists of a relay, the contact of which is a drive part, and 6 is a start switch. Further, the voltage detection device B includes a rectifier-integrator circuit 7 that rectifies the voltage output of the capacitor 1, and an analog-to-digital conversion circuit 8 that converts the output into a digital signal.
It consists of 1.ru.

The controller 100 is composed of a microcomputer, and FIG. 4 shows its basic configuration and the relationship with external circuits. 101 is a CPU, 102 is a program, ROM for fixed data, and 103 is a temporary storage memory RA.
M, 104 is a first timer, which is for the detection time described later, and 105 is a second timer, which is for counting the dehydration time. 106 is an I10 section (input section and output section). Then, when the amount of U objects (i.e., the load of the capacitor motor M) is a certain value, the output of the voltage detection device B indicates that the capacitor 1 at the time of starting the capacitor motor
The relationship between the voltage output V applied to both ends of and time t is as shown in Figure 2, and the voltage output is a predetermined constant value ■1
As shown in FIG. 3, the relationship between the time (detection time) tc and the load amount is almost proportional. Furthermore, the detection time t
c, that is, the relationship between the load amount and the dehydration time T1 is also approximately proportional as shown in FIG. 5, and these are manually input to the controller 100 in advance.

Next, the operation of the present invention will be described with reference to chart 70 in FIG.

First, when the start switch 6 in FIG. 1 is turned on, 1-human power is applied to the input terminal 1 of the controller 100
The output terminal 01 is set to an H output to drive the capacitor motor M via the drive circuit 5.

Then, the first timer 104 and the second timer 105 are sequentially started. Next, when the output of the voltage detection device B reaches a constant value v1 and the signal to the input terminal 12 of the controller 100 becomes I) input, the first timer 104 is switched off, and the first timer H14 at this time is The data, that is, the detection time Lc is read and stored in the RAM 103. Next is data processing, or from the relationship shown in Figure 5, RAM
The necessary dehydration time T1 corresponding to the detection time tc stored in 103 is calculated. Next, the data of the second timer 105, ie, the dehydration time TO which has already passed, is read and stored in the RA IVI 1 t) 3. And T
Determine whether O≧Tj. If TO≧T1 is not true,
The data TO of the second timer 105 is read again and stored in the RAM 103.

Then, it is determined whether TO≧T1. If TO≧T1, the second timer 105 is stopped, the second timer 105 and the first timer 104 are cleared one after another, and the output terminal o1 of the controller 100 is set to the L output to drive the capacitor motor M through the drive circuit 5. to complete dehydration.

As described above, since the dehydration detection according to the present invention automatically controls the dehydration time, damage to the cloth due to insufficient dehydration or excessive dehydration can be prevented.

The above is an application of the present invention to the control of spin-drying time, but the present invention is not limited to this, but can also be applied to the control of water supply level, washing time, rinsing time, and strength of water flow, which are the steps before controlling spin-drying time. Applicable. In addition, at this time, for example, the drive circuit 5 needs to be composed of a pair of relays to provide a pair of drive parts for each direction of rotation, and it is also necessary to provide a water supply valve and a drain valve that can be controlled by the drive circuit 5. . At this time, a certain amount of water is supplied to the laundry before the regular water supply.
and drive the condenser motor M in this state,
As in the illustrated embodiment, the load amount is automatically measured using the voltage detection device and the load amount detection device, and based on this, the water supply level, washing time, rinsing time, strength of water flow, and dehydration time are set as shown in the following table. You may.

<Effects> As is clear from the explanation in Section 2 below, the present invention provides a motor control device that controls ON/OFF of a condenser motor;
It is equipped with a voltage detection device that detects the voltage change across the capacitor when the capacitor motor starts, and a load amount detection device that measures the amount of load applied to the condenser motor from that voltage change.The amount of water supplied is determined based on the amount of load. , strength of water flow,
This method is characterized by controlling the dehydration time, etc.

Therefore, in the present invention, the initial load amount can be automatically measured using a relatively simple and inexpensive configuration.

That is, in the present invention, the load amount is measured by the rotation of the condenser motor with a small amount of water being supplied to the laundry before the regular water supply, and the water supply level and water flow are determined based on the load amount data. It can automatically control the strength, washing time, rinsing time, and spin-drying time, and also measure the amount of load on the items (to be dehydrated and washed) during spin-drying, and automatically control the spin-drying time based on the load amount data. It becomes possible to control.

[Brief explanation of the drawing]

The drawings show a practical example of the present invention. Fig. 1 is an electric circuit diagram, Fig. 2 is a diagram showing the relationship between the voltage across the capacitor of a capacitor motor and time, and Fig. 3 is a detection time of the capacitor motor. FIG. 4 is a flow diagram of the controller, FIG. 5 is a diagram showing the relationship between detection time and dewatering time, and FIG. 6 is a flowchart. A: Motor control device, B: Voltage detection device, C: Load amount detection device, M: Capacitor motor, 1: Capacitor,
4: Drive unit, 5: Drive circuit, 6: Start switch, 1
00: Controller, 104: First timer, 105
:Second timer. Applicant Sharp Corporation Agent Tsunehisa Nakamura

Claims (1)

[Claims] A motor control device that controls ON/OFF of the capacitor motor, a voltage detection device that detects voltage changes across the capacitor when the capacitor motor is started, and a load detection device that measures the amount of load applied to the capacitor motor from that voltage change. A control device for a washing machine, characterized in that the amount of water supplied, strength of water flow, spin-drying time, etc. are controlled based on the load amount of the device.