KR940008603B1 - Water supply apparatus of washing machine - Google Patents

Abstract

A water supply sensor decides velocity and quantity of water supply. The supplier comprises: A) rotation plates of water current (29) detecting quantity of water supply by rotation frequency from the quantity of water; B) sensor rotation plates (29) that is equipped on one side of rotary axle (28) for delivering rotation; C) a guider (27) of water supply sensor; D) a switching contact (24) for switching transformation per rotation of the plate (29); E) sensor circuit (13) generating an appointed pulse by detecting switching signal of the contact (24); F) a controller (1) deciding quantity of water supply by the result of the sensor (13).

Description

Water supply of washing machine

1 is a block diagram of a conventional washing machine.

2 is a detailed circuit diagram of the load driving circuit portion of FIG.

3 is a block diagram of a washing machine according to the present invention.

4 is a configuration of the water supply sensor drive device according to the invention.

5 is a control flow diagram showing an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: control unit 5: display unit,

6: power circuit portion 13: water supply circuit portion,

14: peripheral circuit portion 21: spring support,

22: spring 23: detergent storage handle,

24: water supply switch contact point 25: water supply sensor rotator,

26: support 27: water sensor guider,

28: rotary shaft 29: sensor rotating plate,

30: support

The present invention relates to a water supply device for a washing machine, and more particularly, to a water supply device for a washing machine having a water supply sensor for determining a water supply amount and a water supply speed.

1 is a block diagram of a conventional washing machine, which includes a control unit 1 for generating and outputting a required control signal of a washing machine, and an optical sensor circuit unit for notifying the control unit 1 of a washing progress state according to turbidity of water in a washing furnace. (2), the water level sensor circuit unit 3 for detecting the water level in the washing furnace and informing the control unit 1, and the door opening and closing sensor unit 4 for detecting the opening / closing state of the washing machine lid and informing the control unit 1 ), An interrupt circuit unit 8 for applying an interrupt signal to the control unit 1 for rectified and smoothed DC power by inputting AC power, and an oscillator circuit unit 9 for supplying a clock signal to the control unit 1. ), A buzzer circuit unit 10 for producing a corresponding buzzer sound according to the control signal of the control unit 1, and a quantity detection circuit unit 11 for detecting an amount of laundry in the washing furnace and informing the control unit 1. And the control unit 1 According to the control signal of the control unit according to the load in the washing machine, such as a washing motor and a water supply valve, and the load driving circuit unit 12 for notifying the quantity detection circuit unit 11, and so all of the control unit 1 It is comprised by the display part 5 for showing a control state.

Hereinafter, an operation of the related art according to the above configuration will be described with reference to FIG. 2.

FIG. 2 is a circuit diagram illustrating the load driving circuit unit 12 of FIG. 1 in detail. When water is introduced through the water supply valve of the washing machine, the user sends a control signal to the control terminal P of the load driving circuit unit 12 through the control unit 1. ₂ , P ₃ ). I.e., PC ₂ terminal is "high" state and, when the PC ₃ terminals are "low" state is the trigger (Trigger) signal supplied to the gate of the triac (TR ₁₎ triac (TR ₁₎ is "On" hot AC power is applied to the water feed valve 20 to operate the hot water absorption valve 20.

In addition, since the trigger signal is not supplied to the triac TR ₂ , the triac TR remains in the “off” state, and thus the cold water supply valve 19 does not operate. Herein, if the control signals of the control terminals P ₂ and P ₃ are reversed, the operation is also reversed. Therefore, both cold and hot water can be supplied into the washing furnace of the washing machine according to the user's control signal. The water supply time and method in the washing furnace depend on the washing conditions (washing, rinsing, etc.) and also on the pressure of tap water.

For example, in the prior art of calculating the washing time, the washing time is expressed as Equation (1) by adding the washing time to the water supply time.

Washing time = water supply time + washing time

= 4 minutes ± 10% + 12 minutes = 16 minutes (1)

Here, the washing machine with the water supply time set to 4 minutes and the washing time set to 12 minutes will have a long water supply time at low water pressure depending on the region, and a water supply time will be shorter than 16 minutes at a good water pressure.

Therefore, according to the related art, when the remaining time of washing displayed on the display unit 6 of the washing machine and the actual operating time of the washing machine are misunderstood and the water supply of the washing machine is abnormal (single, water supply valve) After 12 minutes, the buzzer sound indicates that there is a defect that you cannot know the abnormal condition and take no action when you go out of the washing machine.

An object of the present invention is to provide a water supply device and a water supply display method of a washing machine informing a user of accurate washing time information by checking a water supply amount by providing a water supply sensor driving device in an existing washing machine. have.

The present invention for achieving the above object is supplied to the washing furnace through the water supply sensor drive device having a water flow rotating plate and the predetermined washing time by the control means to determine the pulse for a predetermined time through the water supply sensor circuit to inform the control means It is characterized in that it can be predicted and output through the display means.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram of a washing machine according to the present invention, which includes a control unit 1, a switch SW ₁ , a diode D ₁ , and a capacitor for sensing a required detection signal of the washing machine and generating and outputting a control signal. C ₁₅ ) and resistors R ₁₅ and R ₁₆ and a water supply sensor circuit unit 13 for informing the control unit 1 of an output signal corresponding to the on / off operation of the switch SW ₁ , and the control unit. A display section 5 for displaying a predetermined control signal of (1), the control section 1 and a peripheral circuit section 14 including a reset circuit, an interrupt circuit, an oscillation circuit, a buzzer circuit, a quantity sensing circuit, and a load driving circuit. It consists of a power supply circuit section 6 for applying a DC power supply.

Referring to Figures 3 and 4 attached to the description of the operation of the present invention according to the above configuration as follows.

When the user supplies water to the washing machine to operate the washing machine, the water is dropped into the washing tank 34 through the detergent support 30 shown in FIG. 4 through the water supply valve. As the water continues to flow, the water flow rotating plate 29 rotates, and the rotary shaft 28 integrated with the water flow rotating plate 29 also rotates together.

At this time, the water flow preventing plate 33 is provided to prevent the inflow of water flowing along the rotary shaft.

In addition, when the rotary shaft 28 integrated with the water flow rotating plate 29 continues to rotate, the sensor rotating plate 29 also rotates, and the water supply sensor guider 27 rotates the water supply sensor rotator 25 according to the rotation of the sensor rotating plate 29. ) Move up and down with the axis. Here, the detergent support 26 is integrated with the spring support 21, the water supply sensor rotator 25 is coupled and guides the rotation of the rotary shaft 28. Here, as another embodiment, the water supply sensor rotator 25 and the water supply sensor guider 27 may be integrally formed and guided to the detergent support to rotate.

The switch 4 is provided on one side of the feedwater sensor guider 27 so that the contact is repeatedly turned on / off whenever the sensor rotating plate 29 repeats the rotation. This on / off repeat signal is applied to the feedwater sensor circuitry 13 as shown in FIG. Subsequently, the water supply sensor circuit 13 inputs the contact signal of the switch SW ₁ repeated at a predetermined time to the controller 1. The controller 1 determines the amount of water flowing in accordance with the contact point of the switch SW ₁ and displays the remaining washing or rinsing time through the display unit 5.

5 is a control flow diagram showing an embodiment of the present invention as follows. When the user drives the washing machine, the washing machine is operated to supply water to the washing machine 34. The controller 1 drives the water supply valve only in the water supply mode. As the main current rotating plate 31 is rotated and the switch SW ₁ is turned on / off, a pulse is applied to the controller 1. At this time, if a pulse is not applied, it is determined as an error water supply and the user is notified of the error water supply through the display unit 6 and the alarm sound, and if no action is taken to pass a predetermined unit time, the operation of the washing machine is stopped. When a pulse is applied to the control unit 1, the control unit 1 determines whether both hot and cold water are supplied or only hot water or cold water is supplied and detects the pulse number and the pulse width of each unit time.

At this time, if the water supply amount is "phase", the first water supply time is set to determine the operation time of the washing machine, and when the water supply amount is not "phase", it is determined when the water supply amount is "medium". If the water supply amount is "medium", the operating time of the washing machine is determined by setting the second water supply time. If the water supply amount is not "medium", the operating time of the washing machine is determined by setting the third water supply time.

Therefore, when the washing machine is used in a place where the water pressure is low, since the water supply amount is "low", the speed of the water flow rotating plate 31 and the sensor rotating plate 29 becomes slow and the water supply time is operated as a third water supply time that is programmed for a long time.

Such large and small flow rate supply states are indicated by LEDs L _{1 to} L ₄ of the display unit 6.

According to the present invention as described above, the washing machine detects that the water supply amount is different according to the region, installation location, tap water supply state, and various hydraulic pressure states, and predicts the washing time according to the water supply time fluctuation. Even if there is an alarm sound and an indicator to inform the user immediately.

Claims (4)

A water flow rotating plate 29 for detecting a water supply amount by detecting a rotation speed according to the amount of water introduced through the water supply valve; A rotary shaft 28 integrated with the water flow rotating plate 29; A sensor rotating plate 29 provided at one side of the rotary shaft 28 to transmit rotation of the water flow rotating plate 29; A support 26 for guiding rotation of the rotary shaft 28; A water supply sensor guider 27 supported by the support 26 to switch the switching device by elastically moving up and down according to the rotation of the water flow rotating plate 29; A switching device (24) provided at one end of the feedwater sensor guider (27) for switching conversion at every rotation of the water flow rotating plate (29); A sensor circuit unit 13 for sensing a switching signal of the switching device 24 and outputting a predetermined waveform, and a control unit 1 for determining a water supply time to determine a water supply time according to the output of the sensor circuit unit to control a load. Water supply of the washing machine. The water supply sensor guider 27 is coupled to the water supply sensor raw data 25 and the water supply sensor rotator 25 is inserted into a hole formed in a support to support the water supply sensor guider 27 and the rotary. Water supply device of the washing machine, characterized in that the shaft 28 is provided with a water flow prevention plate 33 for blocking the flow of water flowing through the water flow rotating plate (29). According to claim 1, wherein the spring support 21 is formed on the support and the water supply sensor guider 27 has elasticity by coupling the shock absorber 22 between the water supply sensor guider 27 and the spring support 21. The water supply of the washing machine, characterized in that the shanghai. The water supply apparatus for a washing machine according to claim 1, further comprising a display unit (5) for displaying data on the water supply amount divided into predetermined steps.