KR0134312B1 - Yes or no distinction method of water-supplying in a washing - Google Patents

Abstract

The present invention relates to a method for determining whether water is supplied to a washing machine to detect a water supply state by sensing a temperature of water supplied to a washing tank when washing the present invention. Compared to the temperature at the start of water supply for a predetermined time in the state of sensing the temperature in the step, if there is no temperature difference, the step of alarming, and if there is a temperature difference in the step, the step of continuing to supply water It is done.

Description

How to determine whether the washing machine has water

1 is a schematic control block diagram of a washing machine to which the present invention is applied.

2 is a fluorochart for determining whether water is supplied to a washing machine of the present invention.

* Explanation of symbols for main parts of the drawings

A: Key input part B: Water level detection part

C: quantity detection unit: Micom

E: Indicator bar: Supply and drain drive unit

4: Motor drive part Ah: Alarm part

Ruler: Water Supply Valve Temperature Sensing Unit

The present invention relates to a method for determining whether there is a water supply for a washing machine, and more particularly, to a method for determining whether a water supply for a washing machine is provided by detecting a temperature of a water supply valve for supplying washing water to a washing tank during washing. It is about.

Generally, when using a washing machine at home, the cold and hot water supply valves of the washing machine are connected to the cold and hot water supply valves of the washing machine, and the cold and hot water supply of the washing machine is controlled by the control signal of the washing machine while the cold and hot water supply valves are opened. The water supply is opened and closed by the valve, and when water is started in the washing machine, the water supply is turned on and the water is supplied while turning on the cold water supply valve or the cold and hot water supply valves according to the set water supply conditions.

However, sometimes when the user inadvertently locks the cold and hot water pipes or the water is not supplied due to the singular water, most of the washing machines do not sense whether the water is being supplied or not, and thus wastes unnecessary time. During washing, there is a problem that the washing time becomes longer because the washing stops.

Accordingly, an object of the present invention is to sense the temperature of the water supply valve to supply the wash water to the washing tank during washing to quickly determine the presence or absence of water supply by the detected temperature change or state to waste unnecessary time due to water or water valve lock In order to solve the problems that the washing time becomes longer during washing.

In order to achieve the above object, the present invention is a water supply method of the washing machine to be completed and supplied to the washing tank through the water supply and drainage driving unit at the set water level at the time of washing, sensing the temperature of the water supply valve at the beginning of the washing, then water supply starts When the temperature of the water supply valve is sensed by detecting the temperature of the water supply valve and the temperature of the water supply valve in the initial stage of washing, if the temperature change occurs in the water supply valve, the water is continuously supplied at the set water level, and the water supply valve If the temperature change does not occur, it is determined whether the predetermined time has elapsed, and if the temperature change does not occur so that the arbitrarily set time elapses, it is characterized in that the water supply is not made.

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

1 is a schematic control block diagram of a washing machine applied to the present invention, the key input unit (A) for inputting a driving signal for a series of washing operations to be washed, and the water level of the water supplied and drained during the washing operation. A predetermined program set by the water level detecting unit (b) for detecting a quantity, a quantity detecting unit (c) detecting an amount of laundry to be washed during the washing operation, and an operation signal input from the key input unit (a) A microcomputer (d) for controlling and outputting a signal controlled by the microcomputer (d), a display unit (e) for receiving a control signal outputted from the microcomputer (d) and indicating a progress of the washing administration, and outputted from the microcomputer (d) Water supply and drainage drive (bar) to receive and control the washing water to receive the control signal, and a motor drive unit for washing, rinsing, dehydrating while receiving the control signal output from the microcomputer (D), forward, reverse and high-speed rotation ), An alarm unit (H) for receiving a control signal output from the microcomputer (D) and an alarm state (A), and a water supply valve temperature detection unit (S) for sensing a water supply valve temperature of the water supply and drainage driver (B). Will be.

FIG. 2 is a flowchart of a method for determining whether a washing machine is supplied to a washing machine according to the present invention. In the washing method of supplying washing water to a washing tank at a water level set during washing, water is supplied to the washing tank and completed. The temperature sensing memory step (20) of sensing and storing the temperature of the water supply valve to supply water to the water supply valve temperature sensing unit, and the water supply and drainage control unit in the state in which the water supply temperature is stored in the temperature sensing memory step (20) to start water supply The water supply start step 21 and the water supply temperature detection step 22 of detecting the water supply valve temperature of the water supply state when the water supply starts in the water supply start step 21 with a water supply valve temperature detection unit, and the water supply temperature detection step A temperature comparison judging step 23 for comparing the temperature of the water supply valve detected at the time of water supply with the temperature of the water supply valve in the initial stage of washing, and the temperature comparison decision If there is no change in temperature as a result of the temperature determination in the system 23, a time-lapse determination step 24 for determining whether the arbitrarily set water supply time (2 minutes) has elapsed, and a water supply time arbitrarily set in the time-lapse determination step 24 If it has not elapsed, the temperature is judged from the water supply temperature detection step 22 until the water supply time elapses, and if the water supply time arbitrarily set in the state where there is no change in the temperature is passed, the alarm unit (H) is controlled to alert the water supply error. In the water supply error alarm step 24 and the temperature comparison determination step 23, if there is a change in temperature determination result and temperature, the water supply step 26 supplies water until the water supply is completed at the set water level, and in the water supply step 26. When the water supply is complete, the washing and rinsing proceeds to the washing and rinsing step 27.

Referring to the effects of the present invention made as described above are as follows.

First, the power is supplied to the washing machine, the laundry is put in the washing tank, and a series of washing administration operation signals to be washed are set through the key input unit A and input to the microcomputer (la). The temperature sensing step 20 by the signal is sensed and stored in the water supply valve of the water supply and drain drive unit (bar) through the water supply valve temperature detection unit (za) and stored.

When the washing start signal is input to the microcomputer (a) from the key input unit (a) in the state of sensing and storing the temperature of the water supply valve in the initial stage, the microcomputer (la) goes to the water supply start step 21 and supplies the water supply and drainage unit (bar). ) To start the water supply to the washing tank according to the washing water temperature set from the key input unit (a).

When the water supply to the washing tank is started as described above, the microcomputer (d) goes to the water supply temperature sensing step 22 to determine the temperature of the water supply valve of the water supply / drainage driving part (bar) which is being supplied through the water supply valve temperature detection unit. Will be detected.

Subsequently, the microcomputer (d) proceeds to the temperature comparison judging step 23 to start the water supply and then determine whether there is a difference between the temperature of the detected water supply valve and the temperature of the initially detected water supply valve. At this time, if there is a change in temperature as a result of the determination, it is determined that water supply is normally performed in the microcomputer (d), and the water supply step 26 is continued to continue to the initially set water level through the water supply valve of the water supply and drain driver (bar). The water level is supplied through the water level detection unit (B) while sensing and supplying water and completing the washing and rinsing according to the operation signal input from the key input unit (A). .

However, if the difference between the temperature of the water supply valve detected after starting the water supply and the temperature of the initially detected water supply valve does not occur, that is, in the temperature comparison determination step 23, the microcomputer (D) Go to the time elapsed determination step 24 to determine whether the predetermined predetermined water supply time (2 minutes) has elapsed, and if the predetermined predetermined water supply time has not elapsed, the predetermined From the water supply temperature sensing step 22 until the water supply time has elapsed, the temperature of the water supply valve is sensed and repeated while judging the temperature change, and then the predetermined time set in the time elapse determination step 24 is performed. When the water supply time of (2 minutes) has elapsed and no change occurs in the temperature of the water supply valve, the microcomputer (d) goes to the water supply error alarm step (25). In this case, the alarm unit (H) is controlled to warn that there is an error in the water supply or water supply valve.

As described above, the present invention senses the temperature of the water supply valve before water supply when washing water for washing and then detects the temperature of the water supply valve during water supply, and then the temperature of the water supply valve detected during water supply is It determines whether there is a change in temperature, and if there is no change in the temperature of the water supply valve for a predetermined period of time, an alarm is issued. It will provide an effect that can be prevented.

Claims (1)

In the water supply method of the washing machine to supply water to the washing tank through the water supply and drainage driving unit during the washing, the temperature sensing step 20 for detecting and storing the water supply valve temperature with the water supply valve temperature sensing unit at the beginning of the washing, and the temperature sensing memory The water supply start step 21 for starting the water supply by controlling the water supply and drainage drive unit in the state where the water supply temperature is stored in step 20, and the water supply valve temperature of the water supply state when the water supply starts in the water supply start step 21 Compared with the water supply temperature sensing step (22) detected by the water supply valve temperature detection unit, and the temperature of the water supply valve detected at the time of water supply in the water supply temperature detection step 22 and the water supply valve temperature of the initial washing machine is compared with the temperature comparison Determination step 23 and the time-lapse determination to determine whether a predetermined set water supply time (2 minutes) has elapsed if there is no change in temperature as a result of the temperature determination in the temperature comparison determination step 23 When the water supply valve 24 and the water supply time arbitrarily set in the time elapsed determination step 24 have elapsed, and there is no temperature change in the water supply valve, a water supply error alarm step of controlling the alarm unit (H) to alert the water supply error ( 24), and if there is a change in temperature determination result temperature in the temperature comparison determination step 23, the water supply step 26 for supplying water until the water supply is completed at the set water level, and when the water supply is completed in the water supply step 26 Washing and rinsing proceeds to the washing and rinsing step of determining whether the water supply of the washing machine, characterized in that consisting of (27).