JPS6399898A - Controller of washing machine - Google Patents

Abstract

(57) [Abstract] 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 washing machine control device that detects the weight of laundry such as clothing and controls washing.

2. Description of the Related Art A conventional single-grade centrifugal dehydrator has a structure shown in FIG. That is, the upper part of the outer frame (main body) 1 of the centrifugal dehydrator is covered with an outer box 2. 3 is a panel to which an electrical component 4 (control device) is attached to control the mechanical movement of the washing machine.

The lid 5 is arranged in the center of the outer box 2 so as to be openable and closable. The water receiver 6 has a cylindrical shape to receive washing water. 7 is a dehydration tank and washing tank (inner tank), and there is a dehydration hole 8 on the outer periphery.
have. 9 is a rotary blade that stirs the laundry. This rotary blade 9 is arranged at the center bottom of the dehydration tub/washing tub 7. 1o obtains rotational power from an electric motor. That is, the motor pulley 11. (2) The information is transmitted via the belt 12 to a mechanical case 13 containing a clutch mechanism, which rotates the rotary blades 9 during washing, and rotates the spin-drying tub/washing tub 7 during spin-drying. Electric motor 10° mechanical case 13
is attached to the reinforcing plate 14.

In addition, the entire mechanism is suspended by a vibration isolator 16, and spherical receivers 16 are provided at the four corners of the reinforcing plate 140, and the vibration isolator 16 is connected to the spherical receivers 16 via rods 17.
It is slidably attached to the upper part of the outer frame 1. Reference numeral 18 denotes adjustment legs provided at the four corners of the bottom of the outer frame, which are used to adjust so that there is no wobbling when installed on the floor, and these devices are usually provided at one or two locations. 19 is a leg.

Reference numeral 20 denotes a drain cock, and a drain valve is installed inside the machine so as to open and close it, and when the washing water in the water receiver 6 is to be drained, it is opened and discharged to the outside of the machine. The drain cock 20 is normally opened and closed by the force of an electromagnetic magnet 21. Drain cock 20
A drain hose 22 connecting the machine and the outside of the machine discharges washing water to the outside of the machine. 23 is a balancer ring, which has a liquid sealed inside, and when the laundry in the dehydration tub/washing tub 7 is unevenly dehydrated, the balancer ring is used so that the liquid is balanced according to the unevenness of the laundry. Move within 23.

Reference numeral 24 denotes a dewatering tray cover that reinforces the upper opening of the water tray 6. During dehydration, the dehydration hole 8 is used to disperse the water into the water receiver 6 by centrifugal force. In addition, in the case where the dewatering hole 8 was not provided, all the washing liquid was scattered and drained from the upper part of the inner tank by the centrifugal force. Therefore, simply open the lid 6 and put the washed clothes into the dehydration tub/washing tub 7.
The amount of washing was determined by percentage, and the water level was set according to the amount using human intuition.

As shown in FIG. 6, the conventional water level detection device has an air chamber 26 at the bottom of the outer periphery of the water receiver e, the lower part of the air chamber 25 communicating with the inside of the water receiver 6 is closed by a stopper 28, and the upper part is closed by a stopper 28. A connection port 27 is provided to connect an air pipe 28. The air pipe 28 is connected to a pressure switch 29 attached to the outer box 2. Normally, the water level is set manually by setting the knob 30 to an arbitrary water level, such as high, medium, or low, depending on the laundry in the spin-drying tub/washing tub 7. This pressure switch 29 converts the water level of the washing water supplied into the water receiver 6 into pressure, and turns the switch ON-OFF to control the water supply valve and adjust the amount of water supplied.

Problems to be Solved by the Invention In such a conventional configuration, after the laundry is loaded into the washing machine, the amount of detergent is adjusted according to the amount of laundry.

The amount of water (the water level in the spin-drying tub and washing tub) must be set by the user based on intuition and experience, and it is not possible to reliably wash the laundry in an appropriate manner for the amount of laundry.

An object of the present invention is to provide a washing machine with a function of weighing the laundry without determining the amount of detergent or water level based only on the user's feelings and experience.

Means for Solving the Problem In order to solve this problem, the present invention uses the lid of the washing machine as a weighing platform, attaches a pressure sensor to the underside of the lid, and converts the signal from this pressure sensor into weight using a microcomputer. The structure is such that the weight is displayed on a display device.

How it works: With this configuration, just placing the laundry on the lid reduces the weight.
- Since the display is displayed, you can add the appropriate amount of detergent and wash with the appropriate amount of water (water level).

Example Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

This will be explained with reference to FIG. In the figure, a lid 32 is placed in the center of an outer box 31 placed on the top of the main body 1.

At the rear of this outer box 31, shaft supports 33 are provided on the left and right, and the lid 3
2 is attached so as to be freely openable and closable around this pivot support 33.

32a shows a state in which the lid is open. A support part 34 having local protrusions is suspended from the front part of the lid 32, and a pressure sensor 36 (piezoelectric element, etc.) is arranged on the upper surface of the outer box 31, which corresponds to the lower surface of this support part 34. The pressure applied to the pressure sensor 36 is converted into an electrical signal and input to the controller (microcomputer) 36. Therefore, the lid 32
When the laundry 3B is placed on the pedestal 37 on the upper surface of the lid 32, the weight of the laundry and the inside of the lid 32 is applied to the pressure sensor. At this time, the weight of the lid 32 is input into the microcomputer 36 in advance, and during actual measurement, the weight of the lid 32 is subtracted from the weights of both, and the result is output to the display section 46.
The quantity is displayed using the LED. 39 is a lead wire connecting the pressure sensor and the controller 36. controller 3
6 is further connected to a water level sensor 40, which sends an output signal to the water level sensor 40 in order to determine the water level based on the weight of the laundry -11 (K), and stops the water supply when the water level reaches a certain level.41 is the flow rate sensor, and the liquid detergent box 4
2. Controls the amount of liquid detergent inside. That is,
A constant amount of detergent flows out from the flow rate sensor 41 depending on the amount of laundry and the water level set by the water level sensor 4o. The spilled liquid detergent drips into a detergent receiver 44 provided on the top of the dehydration receiver cover 43 and enters the water receiver 6. As described above, the weight of the laundry is detected and the display, water level, and amount of detergent are set. Since the lid 32 supports the laundry with the shaft support 33 and the support part 34, the other parts are not in contact with the outer box.

The washing machine control device of this embodiment will be explained in detail with reference to FIG. First, the pressure F applied to the pressure sensor 36 is converted into an electrical signal and outputted to the microcomputer 36, which converts it into weight.Based on the signal obtained here, the pressure is outputted to the display section 46 for numerical display. In addition, the water level sensor 40
It is also given as an output signal to the flow rate sensor 41 of the automatic detergent dispenser, each of which performs a function appropriate to the amount of laundry.

As shown in FIG. 3, the display section 46 displays the numerical value of the weight using the LED 46. Reference numeral 048 is a main switch that controls the washing machine itself. Lli:D46 operates.

Effects of the Invention As described above, according to the present invention, rather than placing the laundry on the lid before washing, the weight is displayed on the display section, so the laundry can be washed with the amount of detergent and water that matches the amount of laundry. An economical washing machine can be used without wasting detergent or water.

[Brief explanation of the drawing]

Fig. 1 is an enlarged vertical sectional view of the pressure sensor mounting part of a washing machine according to an embodiment of the present invention, Fig. 2 is a block diagram of the control device, Fig. 3 is a perspective view of the display part, and Fig. 4 is a conventional washing machine. Fig. 5 is an enlarged longitudinal sectional view of the pressure switch mounting portion of the washing machine. 31...outer box, 32...lid, 33...
...Axis support, 34...Instep/support part, 36...
・Pressure sensor, 36... Controller, 37
...cradle, 40, river...water level sensor, 41
・Old...Flow rate sensor. Name of attorney: Patent attorney Toshio Nakao and 1 other person 3C
---Contotra

Claims (4)

[Claims] (1) A lid is provided to cover the input port of the outer box that covers the upper part of the main body with an inner tank for storing the rotary blades, which is pivotally supported by the outer box and can be opened and closed, A washing machine control device includes a support part that comes into contact with a pressure sensor, a microcomputer inputting an output signal from the pressure sensor converts pressure data into weight data, and displays the output on a display part. (2) The washing machine control device according to claim 1, wherein a cradle is provided on the top of the lid. (3) The washing machine control device according to claim 1, wherein the microcomputer automatically sets the water level based on the output signal of the pressure sensor. (4) The washing machine control device according to claim 1, wherein the microcomputer automatically sets the amount of water based on the output signal of the pressure sensor.