KR950007057B1 - Wahsing time and water-level determination method for washer - Google Patents

Abstract

checking upon whether the washer is in a washing mode by means of a washing amount detection, if in the washing mode, supplying water of small amount and estimating a washing amount with the reminder voltage obtained through the rotation of a washing motor; setting a water level for each step according to the obtained washing amount and displaying the set water level and the water-supplying state in an optional form; and setting a washing time in proportion to the set water level for each step.

Description

How to set washing time and water level in washing machine

1 is a schematic configuration diagram of a system of a conventional washing machine.

2 is an explanatory view showing the washing level according to FIG.

3 is a signal flow diagram for the operation description of FIG.

4 is a block diagram of a washing time and level control system of the present invention washing machine.

5 is an explanatory diagram showing a washing water level according to FIG.

6 is an exemplary view showing the washing water level and the water supply state by the display unit of FIG.

7 is an output waveform diagram of each part of FIG.

8 is a signal flow chart according to the washing time and the water level setting of FIG.

* Explanation of symbols for main parts of the drawings

1: Micom 2: Key input unit

3: load driving unit 4: washing motor

5: quantity detection part 6: display driving part

7: display unit 8: washing tub

The present invention relates to setting the washing level and washing time of the washing machine, and in particular, automatically displays the washing level and washing time according to the washing amount (capacity) of the washing tank, and damages and washing time of cloth due to lack of washing water and It relates to a washing time / level setting method of the washing machine to improve the washing efficiency while reducing waste of water.

In the conventional washing machine, as shown in FIGS. 1 and 2 of the accompanying drawings, a key input unit in which a user selects a desired washing administration by pressing a key in various states such as washing, rinsing, dehydration frequency, washing course, and washing time. (2) and the microcomputer (1) for controlling the overall system operation of the washing machine according to the key signal of the key input unit (2), and operates according to the control signal of the microcomputer (1) to drive the washing motor (4) The load driving part 3 to control and the quantity detection part 5 which detects a quantity by the excitation voltage generate | occur | produced by the rotational inertia force of the washing motor 4, and inputs it into the microcomputer 1 when the washing motor 4 is off. ), A pulsator 9 for washing the laundry by vortexing the wash water in the washing tank 8 by receiving power generated from the washing motor 4, and a control signal of the microcomputer 1 according to the quantity detection. A display driver 6 operating according to the operation and an operation outputted from the display driver 6 It consists of the display part 7 which consists of light emitting elements LED1-LED5 which display the state of the water level in the washing tank 8 according to voltage.

In the conventional washing machine configured as described above, when the user sets the washing stroke by pressing the washing key configured in the key input unit 2, the microcomputer 1 reads the key signal of the key input unit 2 and performs an initial operation.

That is, initially, the microcomputer 1 opens the cold water valve and the hot water valve (not shown) through the load driving part 3 to supply water to the washing tank 8 to a small level.

When the water supply to the small amount of water in the washing tank 8 is completed, the microcomputer 1 drives the washing motor 4 and the pulsator 9 through the load driving unit 3 for a predetermined time to detect the amount of water in the washing tank 8. While rotating clockwise or counterclockwise, when a certain time elapses, the washing motor 4 is turned off through the load driving unit 3 again.

At this time, the washing motor (4) is stopped even though the operating voltage is cut off in the load driving unit (3) is not stopped immediately by the inertia force of rotation, but the speed is reduced.

In other words, if there is a large amount of water in the washing tank 8, the rotation of the washing motor 4 is stopped more quickly because the friction force between the pulsator 9 and the laundry becomes more severe. This gradually decreases.

In this principle, the excitation voltage generated by the rotational inertia of the washing motor 4 is detected by the quantity detecting unit 5, the waveform is shaped, and input to the microcomputer 1 as a digital signal. Is determined by the quantity of waveforms obtained from the quantity detecting unit 5, and the amount of washing is determined according to the determined quantity of water, and the washing time is set at one of the high water level, the medium water level, the low water level, the small water level, and the minimum water level. Will be set.

As an example, if a small amount of waveform is input from the quantity detecting unit 5, it is determined that the quantity of water is large, and thus, the washing time is set to be long, the washing level is set to a high level, and if the number of waveforms input from the quantity detecting unit 5 is high, It is determined that the amount is small, the washing time is set short, and the washing level is also set to the minimum level.

When the washing water level and the washing time are set in this way, the microcomputer 1 opens the hot water valve and the cold water valve through the load driving unit 3 to supply the washing water to the water level set in the washing tank 8, and the display driving unit 6. By turning on the corresponding light emitting device (LED1-LED5) of the display unit 7 to display the washing level to the user.

After the supply of the washing water to the set water level in the washing tank 8 is completed, the microcomputer 1 repeats the washing motor 7 clockwise, at rest, and counterclockwise through the load driving unit 3 during the set washing time. Rotation is performed.

However, such a conventional washing machine is difficult to set the correct washing level and washing time by setting the washing level only in five steps according to the quantity in the washing tank, and also setting the washing time in relation to the washing amount and the washing level.

That is, the most appropriate washing level according to the amount of water in the washing tank is the high and medium water level between the high water level and the medium water level. Actually, the washing water level determined according to the amount of water is supplied to the washing tank as determined as the high water level or the medium water level.

Accordingly, when the wash water is insufficient, the laundry may not be rubbed with the washing water vortexed by the pulsate, but may be worn or damaged by being directly rubbed with the pulsate. And as well as waste of water, there was a problem that the overall washing efficiency is lowered due to the inaccurate washing level and washing time.

Therefore, an object of the present invention is to detect the amount of washing in the washing tank during the initial operation of the washing machine to precisely subdivid the washing water level and the washing time, and to supply the hot water and cold water into the washing tank according to the set washing water level, as well as the water supply state and washing of hot water and cold water. The present invention provides a method for setting a washing time and a level of a washing machine to display water level in an appropriate shape to prevent waste of water and damage to fabrics due to the high and low amount of washing water.

The object of the present invention is to search whether the washing operation mode by the detection of the amount of storage during the initial operation of the washing machine, if the mode is to supply the small amount of washing water in the washing tank and calculate the amount of capacity by the free voltage obtained by rotating the washing motor at any number of times. The washing water level setting process of subdividing and setting the washing water level into an arbitrary step according to the quantity calculation process, the quantity obtained in the quantity calculating process, and the washing time in any stage in proportion to the washing water level set according to the quantity calculation It is achieved by the process of setting the washing time to set the subdivided, when described in detail based on the accompanying drawings of the present invention.

4 is an embodiment configuration diagram according to the washing time and the water level setting of the washing machine of the present invention, Figure 5 is an explanatory view showing the washing water level according to Figure 4, as shown, washing, rinsing, dehydration frequency, A key input unit 2 for selecting a desired washing stroke by pressing a key in various states such as a washing course and a washing time, and a microcomputer 1 for controlling the overall system operation of the washing machine according to the key signal of the key input unit 2. And an array resistor (3a), a triac (TA1) (TA2), a capacitor (C1-C4) and a resistor (3) for controlling the driving of the washing motor (4) by operating according to the control signal output from the microcomputer (1). The load driving part 3 of R1) and R2 and the low-voltage of the washing motor 8 are operated by the free voltage generated by the rotational inertia force of the washing motor 4 when the operation low pressure is applied to the washing motor 4. A diode (D1) (D2), a light emitting element (LED10), which is detected and input to the microcomputer (1) Washing water in the washing tank (8) by receiving the power generated from the light-receiving element (PT1), transistor (TR1) (TR2) and the resistor (R3-R8) and the power generated by the washing motor (4) A washing tank by a pulsator 9 for vortexing the washing machine, a display driver 6 operating according to a control signal of the microcomputer 1 according to the quantity detection, and an operating voltage output from the display driver 6. (8) Display the water level in subdivided into arbitrary stages through the light emitting elements (LED1-LED7), and displays the water supply state of hot and cold water in any shape through the light emitting elements (LED8) (LED9) It consists of a part 7.

As shown in FIG. 6, the display unit 7 displays the water supply state of the hot water and the cold water by symmetrically arranging the water supply state of the hot water and the cold water in a water pipe shape, and displays the washing water level in multiple stages by showing the shape of the washing tank therebetween.

The operation and effects of the present invention configured as described above will be described in detail with reference to FIGS. 4 to 8.

First, when the user presses the washing key configured in the key input unit 2 and inputs the washing stroke by the quantity detection, the microcomputer 1 reads the key signal of the key input unit 2 and performs an initial operation.

That is, the microcomputer 1 initially opens the cold water valve and the hot water valve (not shown) in the load driving unit 3 to supply water to the washing tank 8 to a small level.

After the water supply to the small water level in the washing tank (8) is completed, the microcomputer (1) through the array resistor (3a) of the load driving unit (3) for a predetermined time to detect the amount of water in the washing tank (8) triac (TA1) The high signal is applied to the gate of and turned on, and for a predetermined time, the high signal is applied to the gate of the triac TA2 through the array resistor 3a of the load driver 3 to turn on.

Accordingly, the input AC power source AC rotates the washing motor 4 and the pulsator 9 clockwise or counterclockwise through the turned-on triacs TA1 and TA2.

When the washing motor 4 operates normally as described above, in the washing motor 4, a normal voltage is generated for a predetermined time T1 by the condenser C5 of the load driving unit 3 as shown in FIG. ), And the quantity detecting unit 5 waveform-forms the normal voltage generated from the washing motor 4 as shown in FIG. 7B and inverts it as shown in FIG. 7C to input it to the microcomputer 1.

Thereafter, the microcomputer 1 outputs a low signal to its output port for a predetermined time to turn off all of the triacs TA1 and TA2 of the load driving unit 3 and to turn off the washing motor 4. At this time, the washing motor (4) is stopped even though the input AC power is cut off without being stopped immediately by the inertial force of rotation to stop the speed.

That is, when the amount of laundry (amount of laundry) in the washing tank 8 is large, the rotation of the washing motor 4 is stopped more quickly because the friction force between the pulsator 9 and the laundry is increased. Since the rotation of the washing motor 4 decreases gradually, the washing motor 4 generates an excitation voltage for a predetermined time T2 as shown in FIG. 7A.

In this principle, the excitation voltage generated by the rotational inertia force of the washing motor 4 is detected by the quantity detection unit 5, and the waveform is shaped and input to the microcomputer 1 as a digital signal.

That is, as shown in FIG. 7A, the excitation voltage generated by the rotation of the excitation during the predetermined time T2 is half-wave rectified through the resistors R3 and R4 and the diode D1 of the quantity sensing unit 5, and then the light emitting device LED10. ) And the light receiving element PT1 are turned on and off, and the waveform is shaped through the transistor TR1 as shown in FIG. 7b, and then inverted as shown in FIG. 7c through the transistor TR2 and input to the microcomputer 1.

Accordingly, the microcomputer 1 determines that there are many and few guns in accordance with the number of waveforms obtained from the quantity detecting unit 5, and subdivids the washing level into seven levels according to the determined quantity, that is, high water level, high medium water level, medium water level, The wash water is set at one of the low and medium water level, the low water level, the low water level, and the minimum water level, and the washing time is divided into seven levels.

As an example, when the number of waveforms is input to the minimum amount in the quantity detecting unit 5, it is determined that there is a large amount of water, so that the washing level is set to a high level, the washing time T7 is set to be long, and the quantity detecting unit 5 forms the waveform. If the number of the maximum input is determined to be small in quantity, the washing water level is set to the minimum water level and the washing time (T1) is also set to the shortest.

Here, the larger the quantity, the washing time (T1-T7) is T1 <T2 <T3 <T4. <T7.

In this way, when the washing water level and the washing time (T1-T7) are set according to the amount of water in the washing tank (8), the microcomputer (1) opens the hot water valve and the cold water valve through the load driving unit (3) and the washing tank (8). While supplying the washing water to the water level set in the state, the corresponding light emitting element LED8 (LED9) of the display unit 7 is turned on through the display driving unit 6 to supply the hot water and the cold water supply state as shown in FIG. In addition, by turning on the corresponding light emitting device (LED1-LED7) in accordance with the set washing water level to display the washing water level to the user in the shape of a washing tank.

As described in detail above, according to the present invention, the washing water level and the washing time can be subdivided more accurately according to the amount of water in the washing tank to supply the washing water into the washing tank, and the water supply state and the washing water level can be displayed in an appropriate shape. Waste of water and damage to the fabric is prevented due to the small amount, and the washing is performed by washing time broken down according to the amount of water, thereby preventing power loss and increasing washing efficiency.

Claims (3)

When the initial operation of the washing machine to search whether the washing operation mode by the detection of the quantity, if the mode, the quantity calculation process for calculating the amount of capacity by the supply voltage obtained by supplying a small amount of washing water in the washing tank and rotating the washing motor any number of times; Washing water level setting process for subdividing and setting the washing water level in arbitrary steps according to the quantity obtained in the quantity calculation process and displaying the set washing water level and water supply status in arbitrary shapes, and washing in proportion to the washing water level set according to the quantity calculation Washing time and level setting method of the washing machine, characterized in that the washing time setting process of subdividing the time into arbitrary steps. The washing of the washing machine according to claim 1, wherein the water supply state and the washing water level indication are displayed by symmetrically arranging the water supply states of the hot water and the cold water, and show the washing water level in multiple stages by showing the shape of the washing tank therebetween. How to set time and level. The washing time and level setting method of claim 1, wherein the washing level and the washing time are set in seven steps.